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Asset Purchase Agreement - R. Eric Montgomery, Oraceutical Innovative Properties LLC, Oraceutical LLC, Oraceutical Acquisition LLC, BriteSmile Inc. and BriteSmile Development Inc.

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                            ASSET PURCHASE AGREEMENT

           THIS ASSET PURCHASE AGREEMENT (the "Agreement") is made and entered
into effective July 1, 2003, on the one hand, by and between R. Eric Montgomery,
an individual ("REM"), Oraceutical Innovative Properties LLC, a Delaware limited
liability company ("OIP"), Oraceutical LLC, a Delaware limited liability company
("Oraceutical"), and Oraceutical Acquisition LLC, a Delaware limited liability
company ("OAC") (REM, OIP, Oraceutical and OAC being referred to collectively as
the "OIP Group") and, on the other hand, BriteSmile, Inc., a Utah corporation
("BriteSmile"), and BriteSmile Development, Inc., a Delaware corporation ("BDI")
(BriteSmile and BDI being referred to collectively as the "BSML Group"). The
BSML Group and the OIP Group are collectively referred to as the "Parties".

                                    RECITALS:

A. Oraceutical and BriteSmile are parties to a Consulting Agreement, dated
November 27, 2002, a copy of which is attached hereto as Exhibit T, that
automatically renewed on January 1, 2003, for a period of 12 months at a rate of
$25,000 per month (the "Consulting Agreement").

B. BriteSmile has an exclusive license to OIP's light activated teeth whitening
("LATW") technology and LATW intellectual property in perpetuity, and a license
to OIP's background rights for LATW.

C. REM is a member of the board of directors and a shareholder of BriteSmile and
has substantial expertise in developing and commercializing certain HOC (as
defined below) products.

D. The OIP Group has developed and holds United States and foreign Patents (as
defined below) for certain Technology (as defined below) for HOC, including
Technology with respect to which the OIP Group has filed applications for United
States and foreign Patents.

E. Prior to or on the date hereof, the OIP Group has assigned to OAC certain
Patents and related rights in HOC intellectual property which are implicated by
an Agreement between BriteSmile and XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX (the
"Side Agreement"), a copy of which is attached hereto as Exhibit A (and
including all Background Rights, if any, as defined in the Consulting Agreement,
which are within the scope of the Other Rights as defined in XXXXXXXXX
XXXXXXXXXXX) (the "OAC IP") and which is more specifically described in Exhibit

* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

<PAGE>


B attached hereto, pursuant to a Patent Assignment dated as of July 7, 2003 (the
"OAC Patent Assignment"), a copy of which is attached hereto as Exhibit C.

F. On May 9, 2003, the Parties entered into a Binding Memorandum of
Understanding (the "MOU") in which they agreed to use commercially reasonable
efforts to cause BDI at Closing to (i) purchase all of the OIP Group's
intellectual property, including Patents and other rights, which are for HOC,
but excluding the OAC IP (the "BDI IP"), which BDI IP is more specifically
described in Exhibit D attached hereto, (ii) enter into a consulting agreement
with OIP (the "BDI Consulting Agreement") in replacement of the Consulting
Agreement, and (iii) establish certain relationships with OAC, including rights
in favor of BDI which will protect the existing and future interests of the BSML
Group with respect to HOC pursuant to the terms and conditions of this
Agreement, and, at the same time, OIP executed and delivered to BDI the Patent
License Agreement attached hereto as Exhibit E in consideration of a payment by
BDI of $750,000.00.

G. The Parties further desire that BDI acquire an exclusive license from OAC to
certain patents in the Professional Field pursuant to the OAC Patent License
Agreement attached hereto as Exhibit Q.

H. The Parties desire to enter into the transactions described in Recital F
above, pursuant to the terms and conditions of this Agreement.

Therefore, in consideration of the mutual covenants and agreements contained
herein, the sufficiency of which are hereby acknowledged, the parties agree as
follows:

                                   AGREEMENTS:

1.         Definitions

     1.1  "Act" shall mean the Securities Act of 1933, as amended. ---

     1.2  "Affiliate"  shall  mean with  respect to a person or entity any other
          person or entity that directly or indirectly  controls,  is controlled
          by or is under common control with such person or entity.


* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       2
<PAGE>

     1.3  "Assumed  Liabilities"  shall  have the  meaning  given  that  term in
          Section 2.2 below.

     1.4  "Base  Recovery  Amount"  shall be the amount  obtained  by adding the
          Payment Shares Value to the Initial Cash Payment.

     1.5  "BDI Consulting  Agreement"  shall have the meaning given that term in
          Recital F above.

     1.6  "BDI IP" shall have the meaning given that term in Recital F above.

     1.7  "BDI Patent  Assignment"  shall mean that  certain  Patent  Assignment
          Agreement  from the OIP Group to BDI of all Patents for BDI IP, a copy
          of which is attached hereto as Exhibit F.

     1.8  "BTG" shall have the meaning given that term in Section 3.3 below.

     1.9  "Basket  Amount"  shall  have the  meaning  given that term in Section
          9.1(c) below.

     1.10 "Confidential  Information"  shall have the meaning given that term in
          Section 10 below.

     1.11 "Closing"  shall be a meeting  held on July 23,  2003,  (or such later
          date as the Parties may mutually  agree) the purpose of which shall be
          to consummate the transactions which are described herein.

     1.12 "Closing Date" shall be the date on which the Closing occurs.

     1.13 "Common Stock" shall mean BriteSmile's  Common Stock, $0.001 par value
          per share.

     1.14 "Consulting  Agreement"  shall  have the  meaning  given  that term in
          Recital A above.

     1.15 "Effective  Date"  shall be the date set  forth in the  opening  first
          sentence of this Agreement, above.

     1.16 "Exchange  Act" shall have the meaning given that term in Section 4.22
          below.

     1.17 "Financial  Statements"  shall  have the  meaning  given  that term in
          Section 5.6 below.

                                       3
<PAGE>

     1.18 "HOC"  refers  to  human  oral  care  and  shall  mean,  specifically,
          compositions,  Treatments  (including the  application of light and/or
          heat),  equipment,  materials and any combination thereof,  applied to
          any  human  oral  cavity  surface  or  tissue  and  intended  for  the
          diagnosis,   mitigation,  cure,  treatment  and/or  prevention  of  an
          aesthetic  or disease  condition  of the human oral  cavity or tissue,
          including  all and any other  beneficial  or  cosmetic  effects to the
          subject that such application may confer.

     1.19 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX

     1.20 "Initial  Cash  Payment"  shall  have the  meaning  given that term in
          Section 3.1 below.

     1.21 "Increased  Recovery  Amount" shall mean the amount obtained by adding
          $1,000,000 to the Base Recovery Amount.

     1.22 "Insolvency  Event" shall have the meaning  given that term in Section
          12 below.

     1.23 "Knowledge", "Know" or "Known" shall mean, (i) with respect to the OIP
          Group,  the actual  knowledge of REM as of the Effective Date and (ii)
          with respect to the BSML Group,  the actual knowledge of the executive
          officers of BriteSmile.

     1.24 "LATW" shall have the meaning given that term in Recital B above.

     1.25 "Liens" shall mean any and all liens,  security  interests,  licenses,
          encumbrances  and  other  third  party  claims  of any  type,  whether
          accrued, absolute or contingent, except for those matters disclosed in
          Exhibit I.

     1.26 "Loss" shall have the meaning given that term in Section 9.1(a) below.

     1.27 "Market Price" on any given date shall mean the last sale price of the
          Common Stock during  regular  trading hours of the  Principal  Trading
          Facility as reported by Bloomberg L.P.

     1.28 "Material  Adverse  Effect" shall mean any actual or potential cost or
          liability which would,  individually  or in the aggregate,  materially
          and adversely  affect  financial  conditions,  results of  operations,
          business interests or business prospects, as applicable.


* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       4
<PAGE>

     1.29 "Membership  Interests"  shall mean all  membership  interests  of all
          Class A Members of the OAC.

     1.30 "MOU" shall have the meaning given that term in Recital F above.


     1.31 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

     1.32 "OAC IP" shall have the meaning given that term in Recital E above.

     1.33 "OAC  Patent  Assignment"  shall have the  meaning  given that term in
          Recital E above.

     1.34 "OIP  Responses"  shall  have the  meaning  given that term in Section
          3.5(d) below.

     1.35 "Original  Assets"  shall have the meaning  given that term in Section
          4.6 below.

     1.36 "Other  Assets"  shall have the meaning given that term in Section 4.6
          below.

     1.37 "P&G Suit" shall have the  meaning  given that term in Section 8.1 (f)
          below.

     1.38 "P&G" shall have the meaning given that term in Section 3.5(a) below.

     1.39 "PSC" shall have the meaning given that term in Section 3.3 below.

     1.40 "PSC LOI" shall have the meaning given that term in Section 3.3 below.

     1.41 "Patents" shall mean all of the following:

          (a)  all Letters Patent of the United States or any other country, and
               all  applications  for Letters Patent of the United States or any
               other country,  which  applications and Letters Patents are owned
               or  controlled  by the OIP Group at Closing and  disclose  and/or
               claim part or all of the Technology  and the Related  Technology,
               together with all Letters  Patent which  subsequently  issue from
               such patent  applications;



* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       5
<PAGE>

          (b)  all   re-issues,   re-examinations,   continuations,   divisions,
               continuations-in-part, renewals or extensions thereof;

          (c)  the patentable  inventions of the OIP Group  disclosed or claimed
               therein,  including exclusivity regarding the right to make, have
               made,  use,  import  offer for sale  and/or  sell (or  license or
               otherwise transfer or dispose of) such inventions;

          (d)  the  right   (but  not  the   obligation)   to   prosecute   such
               applications;   and  (e)  the  right  to  enforce  (but  not  the
               obligation,  except as otherwise provided in this Agreement) such
               Letters Patent and applications, and collect damages, if any, for
               infringement  by any third  parties which  infringement  occurred
               prior to or after the Closing.

     1.42 "Payment Shares" shall have the meaning given that term in Section 3.2
          below.

     1.43 "Payment  Shares  Value"  shall  have the  meaning  given that term in
          Section 3.2 below.

     1.44 "Permitted Field" shall mean the non-HOC field of use.

     1.45 "Principal  Trading  Facility" shall mean the Nasdaq National  Market,
          the  Nasdaq  SmallCap  Market,  the New York  Stock  Exchange,  or the
          American  Stock  Exchange,  whichever  is at the  time  the  principal
          trading exchange or market for the Common Stock, it being acknowledged
          and agreed by the Parties that,  as of the date hereof,  the Principal
          Trading Facility is the Nasdaq SmallCap Market.

     1.46 "Prospective  Customer Data" shall mean the list of names,  addresses,
          phone  numbers  and  other  data  known  to the  OIP  Group  regarding
          prospective Technology users and licensees.

     1.47 "Related Assets" shall mean the following:  the Related Technology and
          Prospective Customer Data.

     1.48 "Related  Technology"  means all existing  technology of the OIP Group
          for HOC and that relates to the  development  of the  Technology or to
          the  performance  by the  Technology  of  its  intended  functions  or
          purposes, whether tangible or intangible, in any stage of development,
          including without limitation existing enhancements,  derivative works,
          or  continuations  currently  planned  or  in  preparation,   designs,
          improvements,   inventions,   works  of  authorship,   trade  secrets,
          formulas,  processes,  routines,  subroutines,  techniques,  concepts,
          methods,  ideas,  research and lab notes, files, test data,  research,
          specifications,  concepts, work papers, and work product if any exists
          at Closing,  all documentation and all rights of any kind in or to any


                                       6
<PAGE>

          of the foregoing, including without limitation all proprietary rights,
          trade  secrets  and  Background  Rights as defined  in the  Consulting
          Agreement.

     1.49 "Returns"  shall have the  meaning  given  that term in  Section  4.11
          below.

     1.50 "SEC  Reports"  shall have the meaning  given that term in Section 5.6
          below.

     1.51 "Securities"  shall have the meaning  given that term in Section  4.19
          below.

     1.52 "Shareholder"  shall have the meaning  given that term in Section 4.18
          below.

     1.53 "Side  Agreement"  shall have the meaning given that term in Recital E
          above.

     1.54 "Taxes" shall have the meaning given that term in Section 4.11 below.

     1.55 "Technology"  shall mean all aspects of the OIP  Group's  intellectual
          property and know-how for HOC.

     1.56 "Treatments"  shall have the  meaning  given that term in Section  3.3
          below.

     1.57 "Transferred  Assets" shall mean the  Technology,  the Patents and the
          Related  Assets,  but excluding the OAC IP.  Transferred  Assets shall
          include any  continuation-in-part  patent  application filed before or
          after Closing that claims priority to a patent  application in the OAC
          IP that does not require a terminal disclaimer.

     1.58 All other initially capitalized terms shall have the meanings assigned
          to them in this Agreement.

2. Assignment and Sale.

           2.1 Assignment of Transferred Assets. Subject to the terms and
conditions of this Agreement, the OIP Group hereby assigns and transfers to BDI,
effective upon the Closing, all right, title and interest in and to the
Transferred Assets, including without limitation all development, marketing,
selling, distribution and other rights, including the right to sue and collect


                                       7
<PAGE>

damages for infringement occurring before or after the Closing, free and clear
of all Liens. OIP Group further agrees that it will cause OAC to grant BDI at
Closing an exclusive license in the Professional Field pursuant to the OAC
Patent License Agreement of even date herewith and attached hereto as Exhibit Q.
Subject to the terms and conditions of this Agreement, the OIP Group agrees not
to use, nor to facilitate the use by third parties of, the Transferred Assets
(except to the extent in the public domain at the time of such use) for any
purpose that would compete, directly or indirectly, with development, marketing
or sales of any products derived therefrom, or to provide third parties with
copies of the materials which constitute the Transferred Assets.

2.2 Assumed Obligations. BDI, effective as of the Closing, agrees to pay,
perform and discharge all Patent prosecution and maintenance costs and fees for
the BDI IP arising on or after the Effective Date. The foregoing obligations
assumed by BDI are hereinafter referred to collectively as the "Assumed
Liabilities." Except for the Assumed Liabilities, BDI shall not assume or have
any responsibility for any liability, obligation or commitment of the OIP Group
of any nature, whether now or hereafter existing and whether or not related to
the Transferred Assets, and the OIP Group shall retain all such liabilities,
obligations or commitments which are not Assumed Liabilities.

2.3        OAC Membership Interests.

                     (a) Upon the first to occur of full payment to the OIP
           Group of (i) the Increased Recovery Amount and all amounts due under
           Section 3.3, or (ii) (x) the Base Recovery Amount and all amounts due
           under Section 3.3 and (y) the date on which the rights of the OIP
           Group under Section 3.5(a) have expired, REM will convey to BDI all
           of the Membership Interests unless BDI instructs REM that it only
           desires to acquire fifty percent (50%) of the issued and outstanding
           Membership Interests. If BDI provides such instruction to REM, then
           REM shall promptly convey fifty (50%) of the issued and outstanding
           Membership Interests to BDI. Thereafter, promptly after written
           notice to REM given at any time, BDI may acquire the remaining
           Membership Interests for no additional consideration.

                     (b) Notwithstanding BDI's rights under Section 2.3(a), upon
           written notice from BDI after the XXXXXXXXXXXXXXXXXXX described in
           Section 3.3(a), REM will transfer to BDI fifty percent (50%) of the
           issued and outstanding Membership Interests.


* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       8
<PAGE>

3. Payment by BDI to the OIP Group. In consideration for the acquisition of the
Transferred Assets as set forth in Section 2.1and the other rights with respect
to the OIP Group set forth below, BDI shall pay the amounts described in
Sections 3.1, 3.2, 3.3 and 3.5 to the member(s) of the OIP Group described
therein:

           3.1 Initial Payment. OIP shall be entitled to an initial cash payment
in the amount of $1,750,000 (the "Initial Cash Payment"), $750,000 of which was
paid by BDI to OIP on May 9, 2003, the receipt of which is hereby acknowledged
by OIP, and $1,000,000 of which shall be paid to OIP at Closing. The Initial
Cash Payment is recoverable by BDI in its entirety from the Recoveries, as more
fully described in Section 3.5 below.


           3.2 Issuance of BriteSmile Common Stock. At Closing BriteSmile shall
issue to REM 66,667 shares of restricted Common Stock (the "Payment Shares").
The value of the Payment Shares shall be determined by multiplying (i) 66,667 by
(ii) the average closing price of the Common Stock for the twenty (20) trading
days immediately prior to the Closing Date (the "Payment Shares Value"). The
Payment Share Value is recoverable by BDI in its entirety from the Recoveries,
as more fully described in Section 3.5 below.

           3.3 Additional Payments. For a period of up to five years from the
date of Closing, BDI agrees to pay to OIP five percent (5.0%) of world-wide net
revenues (gross revenues reduced by returns, allowances, discounts and
promotions) of the BSML Group for a whitening crayon or pen product and which is
currently referred to as "BriteSmile To Go" (and regardless of the trademark(s)
used) ("BTG") and one percent (1.0%) of world-wide net revenues (gross revenues
reduced by returns, allowances, discounts and promotions) of all members of the
BSML Group for LATW or other in-office or chairside whitening treatments
("Treatments") until (i) the aggregate of such payments, together with the Base
Recovery Amount, equals $5,000,000, or (ii) if the rights of the OIP Group under
Section 3.3(a) are triggered, the aggregate of such payments, together with the
Base Recovery Amount, equal $6,000,000. Revenues and all permitted reductions
thereof shall be calculated using generally accepted accounting principles,
consistently applied. If OIP has not received aggregate payments under this
Section 3.3 plus the Base Recovery Amount of $5,000,000, or $6,000,000 if the
OIP Group's rights under Section 3.3(a) have been triggered, before five (5)
years from the date of Closing, the balance will be due and payable at that
time. The various installments of the amounts due under this Section 3.3 are
payable in cash or Common Stock as described in Subsection 3.3(b) below.



                                       9
<PAGE>

                      (a) BDI shall pay OIP an additional $1,000,000 pursuant to
           the terms of this Section 3.3 after
           XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
           XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
           XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
           XXXXXXXXXXXXXXX This payment amount is recoverable in its entirety by
           BDI from the Recoveries, as more fully described in Section 3.5
           below.

                    (i)                 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

                    (ii) BriteSmile and the OIP Group will jointly negotiate the
               termination   of  the   Side   Agreement   concurrent   with  the
               negotiations   pursuant  to  this  Section.   In  the  event  (x)
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX  XXXXXX  or  (y)
               upon  full  payment  to the OIP  Group of all  amounts  due under
               Sections  3.1,  3.2 and 3.3, at the option of BDI, OAC will grant
               BDI an irrevocable,  royalty free, exclusive,  world-wide license
               in  perpetuity  to such OAC IP as BDI may  designate,  which  may
               include  the right to sue third  parties for  infringement.  Such
               license  from OAC would  require  BDI to  prosecute  infringement
               litigation at its own expense and defend OAC to the extent OAC is
               named   as   a   party   in   such   litigation    (XXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               XXXXXXXXXXXXXXXXXX).  OAC  shall  cooperate  (not  including  any
               financial  obligation  on the  part of OAC)  with BDI as it shall



* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       10
<PAGE>

               reasonably  request,  including  consenting  to being  named as a
               party in any dispute relating to such infringement litigation.

               (b) The  payments  described  in this Section 3.3 will be paid in
          cash,  or at the  option  of BDI,  up to  fifty  percent  (50%) of any
          payment amount may be made in the form of Common Stock and the balance
          in cash; provided,  however,  that no payment(s) due the OIP Group may
          be paid in the form of Common  Stock  unless  on the date the  payment
          became  due (and if paid late,  also at the time the  payment is made)
          (i) the  Common  Stock  is  publicly  traded  on a  Principal  Trading
          Facility,  (ii) has a per share Market  Price of at least  $1.00,  and
          (iii)  the  representations,  warranties  and  covenants  set forth in
          Sections  4.18 - 4.28 are true and  correct.  BriteSmile  shall  issue
          Common Stock pursuant to this Subsection  3.3(b),  if any, to REM. All
          payments  are due on a  quarterly  basis,  15 days  after the close of
          BriteSmile's  applicable fiscal quarter, and shall be accompanied by a
          report setting forth in commercially  reasonable  detail the volume of
          BTG sold and Treatments performed by each member of the BSML Group and
          each  division  thereof,  to the extent the BSML  Group  records  such
          information in the ordinary course of business, and the calculation of
          the amounts due under Section 3.3.

                     (c) The OIP Group shall have the right, upon ten (10) days
           prior written notice and during reasonable business hours, to have a
           certified public accounting firm chosen by the OIP Group and
           reasonably satisfactory to BDI examine all of BDI's records relating
           to any payments made pursuant to this Section 3.3. The OIP Group
           shall bear the cost of such inspection and audit. Such audits may be
           made no more frequently than once every twelve (12) months, unless
           the preceding audit revealed a material underpayment. All relevant
           records shall be kept available for at least two (2) years after the
           quarter to which they relate. If an audit shows that amounts were
           underpaid by more than 10%, BDI shall promptly pay the reasonable
           cost of the audit and the full amount of the underpayment plus
           interest at the prime rate quoted by Citibank on the last day of the
           time period audited.

                     (d) The OIP Group agrees not to enter into any agreement
           that would interfere with the ability of the BSML Group to make, have
           made, use, sell, offer for sale, or import BTG or any other HOC
           whitening crayon or pen product; provided, however, for the avoidance
           of doubt, the OIP Group covenants with BDI that any subsequent
           license or other agreement resulting from the Letter of Intent with
           Perfect Smile Corporation ("PSC") dated November 19, 2002 (the "PSC
           LOI"), a copy of which is attached hereto as Exhibit H, will be (i)
           formulation specific (i.e., water-based liquid or gel) and package


                                       11
<PAGE>

           specific; (ii) strictly limited to the specific device which is the
           subject of the PSC LOI; and (c) non-exclusive.

           3.4       [Reserved.]

           3.5 Interest in Recoveries. Subject to Subsections 3.5(c) and (d)
below, BDI shall license or sublicense to and enforce against third parties any
HOC intellectual property it acquires from the OIP Group (either directly or
subsequently through its acquisition of membership interests in OAC), with the
right to sue on and collect damages for Patent infringement, including
infringements occurring prior to Closing. Subject to Subsection 3.5(e) below,
BDI and OIP will each be paid fifty percent (50%) of the Recoveries from such
licensing or enforcement activities, after payment of (i) any legal fees
incurred for licensing or in prosecution of claims against third parties under
the BDI IP and/or the OAC IP, (ii) any legal fees and other defense costs
incurred in any action by a third party alleging that the Transferred Assets in
the form commercialized as of the Effective Date infringe any patent, copyright,
or other personal or proprietary right of the third party, to the extent that
such fees and costs are not paid by the OIP Group pursuant to Section 9.1 below,
and (iii) all BDI IP and/or OAC IP Patent and intellectual property prosecution
and maintenance costs and fees from and after the Effective Date. Amounts
payable as Recoveries to OIP shall be held in trust by BDI and paid promptly to
OIP. "Recoveries" shall be defined and paid as follows:


               (a)                   XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
          XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

                     (b) "Other Recoveries" shall mean all Recoveries, including
           XXXXXXXXXXXX, received by BDI and/or OAC pursuant to BDI IP and/or
           OAC IP from any third party and shall be split fifty percent (50%) to
           BDI and fifty percent (50%) to the OIP Group; provided, that (i) the
           Increased Recovery Amount shall first be paid to BDI unless the
           additional $1,000,000 payment right under Subsection 3.3(a) has not
           been realized, in which case the Base Recovery Amount shall first be
           paid to BDI, and (2) should the $1,000,000 payment right under
           Subsection 3.3(a) subsequently be realized by the OIP Group, then BDI
           will recover the next $1,000,000 before the Parties again begin
           splitting Other Recoveries (this right in BDI to receive the Base


* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       12
<PAGE>

           Recovery Amount or the Increased Recovery Amount, as applicable, is
           not part of the 50/50 split and shall not constitute Other
           Recoveries).

                     (c) OAC and BDI agree to work together to evaluate whether
           current or future products may infringe OAC IP. Given that prompt
           decisions will be needed both in the licensing and enforcement areas,
           BDI will have responsibility for all licensing and enforcement
           activities after BDI and OAC reasonably determine that infringement
           of OAC IP may exist, and OAC shall otherwise cooperate (not including
           any financial obligation on the part of OAC) with BDI as BDI shall
           reasonably request. Should BDI form a suspicion that any product
           infringes OAC IP, OAC agrees to promptly cooperate with BDI in taking
           all commercially reasonable steps to license or sublicense to or
           enforce against potentially infringing third parties the applicable
           OAC IP. Specifically with respect to the Crest Whitestrips product,
           should BDI and OAC form a suspicion that such product infringes OAC
           IP, then it is the intention of OAC and BDI to achieve a financial
           settlement from P&G relating to Whitestrips under their current
           specifications and, in that regard, BDI and the OIP Group agree to
           restrict P&G to an efficacy improvement no greater than one (1) shade
           over the fourteen (14) day application regime for Whitestrips in
           order to facilitate concluding such a license, recognizing that OAC
           and BDI will participate in such Recoveries under this Section 3.5.
           Notwithstanding the foregoing, BDI reserves the right to sue P&G to
           seek to enjoin infringement, if any, and/or recover damages for
           infringement of the Transferred Assets, including infringement
           occurring and damages suffered prior to Closing.

                     (d) BDI shall license or sublicense HOC intellectual
           property it acquires from the OIP Group pursuant to the terms of this
           Agreement in its sole discretion. BDI's duty to prosecute material
           known or suspected infringement of the HOC intellectual property it
           acquires from the OIP Group pursuant to the terms of this Agreement
           shall be subject to the commercially reasonable judgment of BDI,
           considering all of its relevant commercial interests, at all relevant
           times. BDI shall have no duties to the OIP Group with respect to any
           non-material suspected or known infringement of the acquired HOC
           intellectual property. With respect solely to material suspected or
           known infringement, should BDI determine not to prosecute such
           infringement, then the OIP Group may request that BDI advise the OIP
           Group as to its reasons for making such a decision. BDI shall respond
           promptly to such a request. If the OIP Group believes that BDI's
           decision is not commercially reasonable, the OIP Group shall give BDI


                                       13
<PAGE>

           notice thereof stating in detail its reasoning (the "OIP Responses").
           The Parties shall promptly thereafter meet and confer regarding the
           OIP Responses. If the Parties are unable to resolve the issues raised
           by the OIP Responses following such meeting1, the OIP Group may
           either (i) elect to prosecute such litigation solely at its own cost
           and expense and, in such case, the OIP Group shall retain all
           settlement or judgment proceeds, and indemnify the BSML Group against
           all claims asserted against any member of the BSML Group or costs
           incurred in such litigation, or (ii) submit any claim or controversy
           which is the subject of the OIP Responses to mediation in Boston,
           Massachusetts, pursuant to the Commercial Mediation Rules of the
           American Arbitration Association; provided, however, that all persons
           nominated to act as mediators of such claims or controversies shall
           be attorneys at law duly licensed to practice in Massachusetts. The
           unsuccessful party shall pay all costs of conducting the mediation,
           including the attorneys' fees and expert witness fees of the
           prevailing parties.

                     (e) Notwithstanding BDI's obligations under this Section
           3.5, BDI shall have no obligation to defend any member of the OIP
           Group with respect to claims, counterclaims or cross-claims not
           relating to the validity or enforceability of the Patents (e.g.
           breach of contract).

4. The OIP Group's Warranties. Except as qualified by the statements contained
in the Disclosure Schedule attached hereto as Exhibit I, each member of the OIP
Group hereby jointly and severally represents, warrants, and covenants to each
member of the BSML Group that the statements contained below are true, correct
and complete as of the Effective Date and the Closing Date, as follows:

           4.1 Authority and Power. Each member of the OIP Group which is not a
natural person is legally and validly formed, organized and existing. The OIP
Group has all necessary rights and powers to enter into and perform according to
the terms and conditions of this Agreement. The transfer of the Transferred
Assets by the OIP Group to BDI pursuant to the BDI Patent Assignment, Bill of
Sale and related instruments is valid and enforceable. Any and all action on the
part of the OIP Group necessary for the authorization, execution, delivery and
performance of this Agreement and any other agreements contemplated hereby has
been taken. This Agreement and any other agreements contemplated hereby, when
executed and delivered by the OIP Group, will constitute valid and binding
obligations of the OIP Group enforceable in accordance with their respective
terms.
--------
1 It is expressly acknowledged by the OIP Group that any decision by BDI not to
prosecute material suspected or known infringement shall be deemed to be
commercially reasonable if BDI's customary patent litigation counsel shall
decline to prosecute such litigation for a reasonable contingent fee.



                                       14
<PAGE>

           4.2 No Violation. The execution, delivery and performance of this
Agreement and the consummation of the transactions contemplated by this
Agreement will not (i) modify, breach or constitute grounds for the occurrence
or declaration of a default under any material agreement by which the
Transferred Assets may be bound or affected; (ii) result in the creation or
imposition of (or the obligation to create or impose) any Lien on the
Transferred Assets; or (iii) violate any law, regulation, order, judgment or
decree of any court or governmental agency, except as to any violation which
would not result in a Material Adverse Effect. The OIP Group is not subject to
any order, writ, injunction, or decree of any court or any federal, state,
municipal or other governmental department, commission, board, agency or
instrumentality, domestic or foreign in respect of the Transferred Assets.

           4.3 No Third Party Agreements or Consents. Other than as explicitly
stated in the Disclosure Schedule, (i) there are no contracts, agreements or
understandings materially affecting the Transferred Assets, and (ii) no consent
of any person not a party to this Agreement is required to be obtained on the
part of the OIP Group to permit the consummation of the transactions
contemplated by this Agreement (including without limitation the transfer to BDI
of all right, title and interest in and to the Transferred Assets). Except as
specifically provided herein, BDI shall not by virtue of any contractual
arrangement between the OIP Group and any third party be obligated to provide to
any such third party any copies of the Transferred Assets, or any modifications,
enhancements or upgrades thereto or derivative works thereof or any other right
or thing of value.

           4.4 No Litigation, etc. Other than as explicitly stated in the
Disclosed Schedule, there is no litigation, arbitration or other proceeding
(formal or informal) pending or, to the Knowledge of the OIP Group, threatened
against or affecting the OIP Group or the Transferred Assets, the result of
which could have a Material Adverse Effect on the Transferred Assets or BDI's
ability to freely license, use, market and distribute the Transferred Assets;
nor does the OIP Group Know or have reason to Know of any basis for the same. To
the Knowledge of the OIP Group, there is no investigation (formal or informal),
pending or threatened against or affecting the Transferred Assets.

           4.5 No Broker's Fees. The OIP Group has not incurred, and will not
incur, directly or indirectly, as a result of any action taken by it, any
liability for brokerage or finders' fees or agents' commissions or any similar
charges in connection with this Agreement that may be imposed against BDI.

4.6 Title. The OIP Group has complete, good and marketable title (or rightful
possession and ownership, as the case may be with respect to know-how and trade


                                       15
<PAGE>

secrets) to all of the Transferred Assets which consist of the Patents and the
Related Technology which are disclosed or claimed in the Patents (the "Original
Assets"), and all of the Original Assets are transferred to BDI free and clear
of any interests of other parties, Liens or restrictions on or conditions to
transfer or assignment. To its Knowledge, the OIP Group has complete, good and
marketable title (or rightful possession and ownership, as the case may be with
respect to know-how and trade secrets) to all of the Transferred Assets which
are not Original Assets (the "Other Assets"), and, to its Knowledge, all of the
Other Assets are transferred to BDI free and clear of any interests of other
parties, Liens or restrictions on or conditions to transfer or assignment.

4.7 Technology. To the Knowledge of the OIP Group, the Technology (except for
the Technology which is disclosed in the Patents) has not been published in such
a manner that any material part thereof has entered the public domain. The
Technology is not the subject of any pending or threatened claim for breach of
warranty or product liability Known to the OIP Group. Other than the Patents,
the OIP Group has no issued Letters Patents, patent applications pending, or
patent applications or continuations currently being prepared or under
consideration that cover part or all of the Technology. Any proprietary
information relating to the Transferred Assets has been treated as proprietary
and confidential by the OIP Group. No party other than the OIP Group, the U.S.
Patent and Trademark Office, certain foreign patent and trademark offices, and
the BSML Group possesses any copy of all or part of the technical specifications
for the Technology (except for the Technology which is disclosed in the
Patents). Any copies of the Technology's technical specifications retained by
the OIP Group after the Closing shall be used by the OIP Group solely for the
purposes of this Agreement (including rights with respect to the Permitted
Field) or under the BDI Consulting Agreement, and shall be treated with the
strictest confidentiality to ensure that no part of the technical specifications
is disclosed to any person not authorized by BDI.

4.8 Compliance with Laws. The OIP Group is in compliance with all statutes,
laws, rules and regulations with respect to or affecting the ownership and use
of the Transferred Assets except as to any failure of compliance which would not
result in a Material Adverse Effect.

4.9 No Fraudulent Conveyance. After due inquiry and negotiation, the sale and
purchase of the Transferred Assets is made in exchange for fair and equivalent
consideration, and the OIP Group is not now insolvent and will not be rendered
insolvent by the sale of the Transferred Assets under the terms of this
Agreement. The transactions contemplated by this Agreement will not constitute a
fraudulent conveyance or any act with similar potential consequences, or


                                       16
<PAGE>

otherwise give any creditor of the OIP Group rights to any of the Transferred
Assets.

4.10 Noninfringement, etc. The Original Assets (i) are original works of the OIP
Group and, to the best of the OIP Group's Knowledge, do not violate any
copyright, trade secret, trademark, Patent or other proprietary right of any
third party; (ii) to the best knowledge of the OIP Group, were not created from
nor will they incorporate at Closing any legally protected third party
intellectual property that would prevent the BSML Group from exercising its
rights in the Original Assets; except as has been disclosed in writing to BDI in
the Disclosure Schedule, and (iii) are not subject to any third party royalty or
other material obligations. To the Knowledge of the OIP Group, the Other Assets
(x) are original works of the OIP Group and do not violate any copyright, trade
secret, trademark, patent or other proprietary right of any third party; (y)
were not created from nor will they incorporate at Closing any legally protected
third party intellectual property that would prevent the BSML Group from
exercising its rights in the Original Assets; and (z) are not subject to any
third party royalty or other material obligations. Other than the OIP Group, all
persons developing or creating any part of the Original Assets either were
acting as employees of the OIP Group or have executed agreements adequate to
assign any interest they may have in their creation to the OIP Group. To the
Knowledge of the OIP Group, other than the OIP Group, all persons developing or
creating any part of the Other Assets either were acting as employees of the OIP
Group or have executed agreements adequate to assign any interest they may have
in their creation to the OIP Group. There are no existing, pending or, to the
OIP Group's Knowledge, threatened, claims of infringement, misappropriation or
disputed ownership by any third party relating to the Original Assets, and, to
the Knowledge of the OIP Group, there is no basis for any such claim. To the
Knowledge of the OIP Group, there are no existing, pending or threatened claims
of infringement, misappropriation or disputed ownership by any third party
relating to the Other Assets and there is no basis for any such claim.

4.11 Taxes and Audits. To the extent that a failure to do so would result in a
Material Adverse Effect to the BSML Group or the Transferred Assets, (i) the OIP
Group has timely filed all federal, state and other returns and reports
("Returns") relating to taxes or other governmental charges, obligations,
filings or fees, including without limitation income, business, sales or use,
employment, withholding and secondary or transferee liability for taxes and any
related interest or penalties ("Taxes"); (ii) the OIP Group's Returns are true
and correct and were completed in accordance with applicable laws; (iii) the OIP
Group has paid all Taxes, if any, due and payable in connection with the OIP
Group's business and its use and ownership of the Transferred Assets; (iv) the
OIP Group has withheld all required amounts and paid such amounts to the


                                       17
<PAGE>

appropriate governmental authority; and (v) there are no current Liens for Taxes
and no pending or threatened audits, examinations, assessments, asserted
deficiencies or claims for Taxes.

4.12 Accuracy of Due Diligence Materials. All documents provided to BDI by the
OIP Group pursuant to or in connection with this Agreement, including due
diligence materials, are true and accurate in all material respects and do not
contain any untrue statement of a material fact or omit to state a material fact
required to make the statement made, in light of the circumstances under which
they are made, not misleading. To its Knowledge, the OIP Group has disclosed to
BDI all materials or publications provided by third parties or otherwise in its
possession or control which one with ordinary skill in the art would reasonably
deem to be prior art with respect to any of the Patents which are the subject of
the BDI Patent Assignment or the OAC Patent Assignment.

4.13 All HOC Intellectual Property. The HOC intellectual property transferred to
BDI or OAC by the OIP Group pursuant to or in connection with this Agreement
taken as a whole constitutes all Technology, Related Technology and Patents
owned, controlled or licensed by them or any Affiliate of them. Upon
consummation of the transactions contemplated at Closing, no member of the OIP
Group, other than OAC under the OAC Patent Assignment, will be the owner of any
Technology, Related Technology or Patents.

4.14 Insurance. There is no claim pending under any insurance policy by any
member of the OIP Group with respect to the Patents, Technology or Related
Technology.

4.15 Confidential Information and Invention Assignment Agreements. Other than as
explicitly stated in the Disclosure Schedule, to the Knowledge of the OIP Group
with respect to the Transferred Assets, no current or former employee,
consultant or officer of the OIP Group or any of its predecessors (i) is in
violation of an agreement with the OIP Group regarding confidentiality and
proprietary information nor (ii) excluded works or inventions made prior to his
or her employment from the scope of such agreements, such that said actions by
any former employee, consultant or officer would have a Material Adverse Effect.

4.16 Patent Maintenance. Other than as explicitly stated in the Disclosure
Schedule, to the OIP Group's best Knowledge, no act has been done or omitted to
be done by the OIP Group, or any licensee thereof, which has had or could have
the effect of impairing or dedicating to the public, or entitling any U.S. or


                                       18
<PAGE>

foreign governmental authority or any other person to cancel, forfeit, modify or
consider abandoned, any Patents, or give any person any rights with respect
thereto. To the best of its Knowledge, the OIP Group's Patents are valid,
enforceable and free of defects. The OIP Group has no Knowledge of any facts or
claims which would cause any Patent to be invalid or unenforceable, nor has it
received any notice that any person or entity may bring such a claim or a claim
of interference or opposition. Notwithstanding the foregoing, any action that
would constitute an abandonment of an issued U.S. Patent has not and will not
have a Material Adverse Effect on the transferred Patents.

4.17 P&G Standstill. No member of the OIP Group did any act or omitted to do any
act which had the effect of extending the Standstill Agreement, pursuant to the
terms thereof, between P&G and certain members of the OIP Group, a copy of which
attached hereto as Exhibit J, past June 30, 2003.

4.18 Investor Status. Each member of the OIP Group which will become a holder of
Common Stock pursuant to the terms of this Agreement (the "Shareholder") is an
"accredited investor" within the meaning of Section 501(a) of Regulation D under
the Act.

4.19 Liquidity. Each Shareholder has adequate means of providing for his/its
current needs and contingencies and has no need for liquidity in his/its
investment in the Payment Shares, the net revenues interests described in
Section 3.3, or the Common Stock which may be issued pursuant to Section 3.3(b)
(collectively, the "Securities"). Each Shareholder is capable of bearing the
economic risk and the burden of the investment contemplated by this Agreement,
including, but not limited to, the possibility of the complete loss of the value
of the Securities, and the limited transferability of the Securities, which may
make the liquidation of the Securities impossible in the near future.

4.20 Sole Party in Interest. Each Shareholder represents that he/it are the sole
and true party in interest, and no other person or entity has or will have upon
the issuance of the Securities beneficial ownership interest in the Securities
or any portion thereof, whether direct or indirect (excluding any contractual
right to payments based on the value of such Securities).

4.21 Investment Purpose. Each Shareholder is acquiring the Securities for
his/its own account and for investment purposes, and not for the account or
benefit of any other person or entity or for or with a view to resale or
distribution.

4.22 Knowledge and Experience. Each Shareholder is experienced in evaluating and
making speculative investments, and has the capacity to protect his/its


                                       19
<PAGE>

interests in connection with the acquisition of the Securities. Each of the OIP
Group has such knowledge and experience in financial and business matters in
general, and investments in BriteSmile in particular, that he/it is capable of
evaluating the merits and risks of his/its investment.

4.23 Disclosure, Access to Information. Each Shareholder confirms that he/it has
received, read, and understands this Agreement, and that all documents, records,
books and other information pertaining to his/its investment in BriteSmile
requested by him/it have been made available for inspection and copying and that
there are no additional materials or documents that have been requested by
him/it that have not been made available. Each Shareholder further acknowledges
that REM is a director of BriteSmile. Each Shareholder acknowledges that
BriteSmile is subject to the periodic reporting requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and he/it has reviewed or
received copies of all such reports filed by BriteSmile with the SEC requested
in writing by the Shareholder.

4.24 Exclusive Reliance on this Agreement. In making the decision to acquire the
Securities, except as set forth in Section 5.13, each Shareholder has relied
exclusively upon information included in this Agreement or incorporated herein
by reference and BriteSmile's reports filed with the SEC and requested in
writing by Shareholder, and not on any other representations, promises or
information, whether written or verbal, by any person.

4.25 Advice of Counsel. Each Shareholder understands the terms and conditions of
this Agreement, has investigated all issues to his/its satisfaction, has
consulted with such of his/its own legal counsel or other advisors as he/it
deems necessary, and is not relying, and has not relied on the BSML Group for an
explanation of the terms or conditions of this Agreement or any document or
instrument related to the transactions contemplated thereby.

4.26 Certain Risk Factors. Each Shareholder has been informed about and fully
understands that there are risks associated with an investment in BriteSmile and
the Securities, including those disclosed in documents filed by BriteSmile with
the SEC pursuant to the Exchange Act.

4.27 Manner of Sale. At no time was any member of the OIP Group presented with
or solicited by or through any leaflet, public promotional meeting, television
advertisement or any other form of general solicitation or advertising.



                                       20
<PAGE>

4.28 Restricted Securities. Each Shareholder understands and acknowledges that
the Securities have not been registered under the Act, or any state securities
laws, and that they will be issued in reliance upon certain exemptions from the
registration requirements of those laws, and thus cannot be resold unless they
are registered under the Act or pursuant to a resale transaction in accordance
with Rule 144 under the Act, or pursuant to another available exemption from
registration. Except in connection with a resale transaction pursuant to a
registration statement or Rule 144, it shall be a condition to such transfer
that BriteSmile has first received an opinion of competent securities counsel
that registration is not required for such resale. In connection with a resale
pursuant to Rule 144, the seller shall provide BriteSmile with such information
and certificates as BriteSmile reasonably requests to establish the availability
of such rule. With regard to the restrictions on resales of the Securities, each
Shareholder is aware (i) of the limitations and applicability of Securities and
Exchange Commission Rule 144, (ii) that BriteSmile will issue stop transfer
orders to its stock transfer agent in the event of attempts to improperly
transfer any Securities; and (iii) that a restrictive legend will be placed on
certificates representing the Securities which legend will read substantially as
follows:

           THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ISSUED
           PURSUANT TO A CLAIM OF EXEMPTION FROM THE REGISTRATION OR
           QUALIFICATION PROVISIONS OF THE SECURITIES ACT OF 1933, AS AMENDED
           (THE "ACT"), AND STATE SECURITIES LAWS AND THEREFORE HAVE NOT BEEN
           REGISTERED UNDER THE ACT OR UNDER THE SECURITIES LAWS OF ANY STATE.
           THESE SECURITIES MAY NOT BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR
           HYPOTHECATED WITHOUT COMPLIANCE WITH THE PROVISIONS OF RULE 144 UNDER
           THE ACT, COMPLIANCE WITH THE REGISTRATION OR QUALIFICATION PROVISIONS
           OF THE ACT OR APPLICABLE STATE LAWS, OR PURSUANT TO AN AVAILABLE
           EXEMPTION FROM SUCH REGISTRATION REQUIREMENTS.

5. Representations and Warranties of BriteSmile and BDI. Each member of the BSML
Group jointly and severally represents and warrants to the OIP Group that the
statements contained below are true, correct and complete as of the Effective
Date, the Closing Date and on each date that BriteSmile issues Securities to any
Shareholder pursuant to the terms and conditions of this Agreement, as follows:

           5.1 Organization. BriteSmile is a corporation duly organized, validly
existing and in good standing under the laws of the State of Utah. BDI is a
corporation duly organized, validly existing, and in good standing under the
laws of the State of Delaware.



                                       21
<PAGE>

           5.2 Authorization of Transaction. The BSML Group has full power and
authority (including full corporate power and authority) to execute and deliver
the documents to be delivered by it and to perform its obligations thereunder.
Without limiting the generality of the foregoing, the respective boards of
directors of the BSML Group have duly authorized the execution, delivery, and
performance of this Agreement. This Agreement constitutes the valid and legally
binding obligation of the BSML Group, enforceable in accordance with its terms
and conditions.

           5.3 Noncontravention. Neither the execution and the delivery of the
documents to be delivered at closing by the BSML Group, nor the consummation of
the transactions contemplated thereby will (i) violate any constitution,
statute, regulation, rule, injunction, judgment, order, decree, ruling, charge,
or other restriction of any government, governmental agency, or court to which
the BSML Group is subject or any provision of its charter or bylaws or (ii)
conflict with, result in a breach of, constitute a default under, result in the
acceleration of, create in any party the right to accelerate, terminate, modify,
or cancel, or require any notice under any agreement, contract, lease, license,
instrument, or other arrangement to which the BSML Group is a party or by which
it is bound or to which any of its assets are subject. The BSML Group does not
need to give any notice to, make any filing with, or obtain any authorization,
consent, or approval of any government or governmental agency in order for the
Parties to consummate the transactions contemplated by this Agreement.

5.4 Brokers' Fees. The BSML Group does not have any liability or obligation to
pay any fees or commissions to any broker, finder, or agent with respect to the
transactions contemplated by this Agreement for which the OIP Group could become
liable or obligated.

5.5 Capitalization. The authorized capital stock of BriteSmile consists of
50,000,000 shares of Common Stock. As of May 13, 2003, 2,429,940 shares of
Common Stock were issued and outstanding. All of the outstanding shares of
Common Stock are, and the Securities will be, when paid for and issued, duly
authorized, validly issued, fully paid and non-assessable and free of any
preemptive rights. The authorized capital stock of BDI consists of 1,000,000
shares of common stock, par value $0.001 per share, and 100,000 shares of
preferred stock, par value $0.001 per share. As of the date hereof, 100,000
shares of common stock of BDI are issued and outstanding and held of record by
BriteSmile. All of the outstanding shares of common stock of BDI are duly
authorized, validly issued, fully paid and non-assessable and free of any
preemptive rights.



                                       22
<PAGE>

5.6 SEC Reports; Financial Statements. BriteSmile has filed all forms, reports,
schedules, proxy statements, registration statements and other documents
(including all exhibits thereto) ("SEC Reports") required to be filed with the
SEC since January 1, 2000. The SEC Reports (including but not limited to any
financial statements or schedules included or incorporated by reference therein
and all of which are incorporated by reference herein in their entirety) (i) at
the time they became effective, in the case of registration statements, or when
filed, in the case of any other SEC Report, complied in all material respects
with the requirements of the Act or the Exchange Act, as the case may be, and
(ii) do not (except to the extent revised or superseded by a subsequent filing
with the SEC) and did not at the time they were filed, contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary in order to make the statements therein, in the
light of the circumstances under which they were made, not misleading. The
financial statements included in the SEC Reports (the "Financial Statements")
present fairly the financial position of the BriteSmile at such dates and the
results of its operations and cash flows for the periods then ended, in
conformity with generally accepted accounting principles applied on a consistent
basis throughout the periods covered by such statements, except that (i) the
unaudited interim financial statements were or are subject to normal and
recurring year-end adjustments (which in the aggregate are not material in
amount) and (ii) the quarterly financial statements do not contain all the
footnote disclosures required by generally accepted accounting principles. Since
December 31, 2002, except for matters described in the SEC Reports, BriteSmile
and its subsidiaries have conducted their respective businesses and operations
consistent with past practice only in the ordinary and usual course.

5.7 Litigation, Etc. Except as disclosed in the SEC Reports, there are no (a)
suits, actions or legal, administrative, arbitration or other proceedings or
governmental investigations or other controversies pending, or to the Knowledge
of the BSML Group threatened, or as to which the BSML Group has received any
notice, claim or assertion, or (b) obligations or liabilities (other than
obligations and liabilities arising in the ordinary course of business), whether
accrued, contingent or otherwise, which, in either case (a) or (b) involve a
potential cost or liability to the BSML Group which would singly or in the
aggregate, have a Material Adversely Effect on the financial condition, results
of operations, business or prospects of the BSML Group. Neither BriteSmile nor
BDI is in default or has Knowledge of facts which could result in a default with
respect to any order, writ, injunction or decree of any court or before any
federal, state, municipal or other governmental department, commission, board,
bureau, agency or instrumentality, domestic or foreign affecting or relating to
either of them which is material to the financial condition, results of
operations or business of the BSML Group.



                                       23
<PAGE>

5.8 Regulatory Compliance. BriteSmile and BDI are currently operating in
compliance in all material respects with all laws, rules, regulations, orders,
decrees, licenses or permits applicable to them or to their businesses. Neither
company has received any notice from the FDA or any other governmental agency or
authority of any noncompliance by either of them with any law, rule, regulation,
order, decree, license or permit applicable to them or their businesses or
properties and which is material to the financial condition, results of
operations or business of the BSML Group.

5.9 Articles of Incorporation and Bylaws. Copies of the Articles of
Incorporation and Bylaws of BriteSmile and BDI as amended to date have been
provided or made available to the OIP Group and are complete and correct.
Neither BriteSmile nor BDI is in default under or in violation of any provisions
of their respective articles of incorporation or bylaws.

5.10 Product Liability. Except as may be disclosed in the SEC Reports, neither
BDI nor BriteSmile has received any notice, claim or assertion regarding an
actual or alleged liability of BriteSmile or BDI with respect to any of their
products, an adverse determination of which would be material to the financial
condition, results of operations or business of the BSML Group.

5.11 OEM Relationships. Except as may be disclosed in the SEC Reports, neither
BriteSmile nor BDI has received any notice, claim or assertion from or with
respect to any OEM party regarding any intention of such OEM party to either
discontinue its relationship with BriteSmile or BDI or develop or market
products in competition with BriteSmile or BDI.

5.12 Patents and Proprietary Rights. Except as may be disclosed in the SEC
Reports, neither BriteSmile nor BDI has reason to believe or has received any
notice, claim or assertion that any of their Patents or proprietary rights
infringes upon or otherwise violates the Patents or proprietary rights of any
other party.

5.13 Unincorporated Documents or Materials. With respect to any document or
other materials received by the OIP Group from the BSML Group or its
representatives which are not incorporated herein by reference, (i) neither
BriteSmile nor BDI has reason to believe any of such documents and materials
contain material misstatements or omissions, and (ii) such documents and
materials were prepared by BriteSmile or BDI or their representatives using due
care.

5.14 Information. To the best Knowledge of BriteSmile and BDI, the information
concerning them set forth in or incorporated by reference in this Agreement is
complete and accurate in all material respects and does not contain any untrue
statement of a material fact or omit to state a material fact required to make


                                       24
<PAGE>

the statements made, in light of the circumstances under which they were made,
not misleading.

5.15 Nasdaq Listing. BriteSmile shall promptly make appropriate filings under
the rules of The Nasdaq Stock Market, Inc. in order that the Common Stock to be
issued in connection with this Agreement will be authorized for listing on the
Nasdaq SmallCap Market, subject to Notice of Issuance.

5.16 Taxes. To the extent that a failure to do so would result in a Material
Adverse Effect to REM, (i) the BSML Group has timely filed all Returns relating
to Taxes; (ii) the BSML Group's Returns are true and correct and were completed
in accordance with applicable laws; (iii) the BSML Group has paid all Taxes, if
any, due and payable in connection with the BSML Group's business; (iv) the BSML
Group has withheld all required Tax amounts and paid such amounts to the
appropriate governmental authority; and (v) there are no current Liens for Taxes
and no pending or, to the Knowledge of the BSML Group, threatened audits,
examination, assessments, asserted deficiencies or claims for Taxes.

6. Deliveries. At or before the Closing, the OIP Group shall deliver the
following items to BDI:

6.1        OIP Group Deliveries:

(a)        the BDI Patent Assignment in the form attached hereto as Exhibit F;

(b)        the OIP Group Disclosure Schedule in the form attached hereto as
           Exhibit I;

(c)        a Bill of Sale in the form attached as Exhibit K;

(d)        a CD containing detailed descriptions and formulas for the Related
           Technology for the BDI IP conceived during or after 1996 sufficient
           for one skilled in the art to reproduce such Related Technology for
           the BDI IP;

(e)        a copy of the fully executed OAC Patent Assignment;

(f)        a copy of the fully-executed organizational documents for OAC,
           including the Operating Agreement in the form attached hereto as
           Exhibit L;



                                       25
<PAGE>

(g)        a copy of the fully executed assignments by the OIP Group to OAC of
           the licenses and rights described in Exhibit M attached hereto;

(h)        a copy of the fully executed assignment by the OIP Group to OIP of
           intellectual property for the Permitted Field, in the form attached
           hereto as Exhibit N;

(i)        a copy of minutes or other appropriate documents, signed by the
           manager of OAC, OIP, Oraceutical and any other member of the OIP
           Group which executes or delivers any instrument or agreement at or in
           connection with the Closing, approving this Agreement and authorizing
           representatives of such entities to enter into and perform this
           Agreement or such instruments or agreements required by this
           Agreement at or in connection with the Closing;

(j)        the BDI Consulting Agreement fully executed by BDI in the form
           attached hereto as Exhibit O;

(k)        the OAC Patent License Agreement in the form attached hereto as
           Exhibit Q;

(l)        the opinion of counsel for the OIP Group regarding the PSC LOI in the
           form attached hereto as Exhibit P;

(m)        such other documents and instruments as may be necessary to
           completely sell, assign and transfer the Transferred Assets to BDI;
           and

(n)        any other items required to be delivered by the OIP Group to BDI
           prior to the Closing pursuant to this Agreement.

     6.2  BSML Group Deliveries.  At or before the Closing, the BSML Group shall
          deliver the following items to the OIP Group:

(a) the Registration Rights Agreement in the form attached hereto as Exhibit R;

(b) the BriteSmile Guaranty in the form attached hereto as Exhibit S;

(c) the payment due at Closing described in Section 3.1 and the Payment Shares;
and



                                       26
<PAGE>

(d) such other documents or instruments as the BSML Group is required to deliver
at or prior to Closing.

7. Pre-Closing Covenants. The Parties agree as follows with respect to the
period between the Effective Date and the earlier of either the termination of
this Agreement or the Closing.

           7.1 General. Each of the Parties will use its commercially reasonable
efforts to take all action and to do all things necessary, proper, or advisable
in order to consummate and make effective the transactions contemplated by this
Agreement.

           7.2 Notices and Consents. Each of the Parties will give any notices
to, make any filings with, and use its commercially reasonable efforts to obtain
any authorizations, consents, and approvals of governments and governmental
agencies in connection with the transactions contemplated by the Agreement.

           7.3 Operation of Business. Except with the written consent of the
BSML Group (which may be withheld, delayed or conditioned), the OIP Group will
conduct the business in a reasonable manner in accordance with past practices,
and will use its commercially reasonable best efforts to preserve its existing
business and relationships with its employees, customers, suppliers, and others,
to preserve and protect the Transferred Assets, and to conduct its business in
compliance with all applicable laws and regulations. During that period, the OIP
Group will not make any divestitures of Transferred Assets and will not create
any Liens with respect to any of the Transferred Assets, or any other rights, or
interests that are subject to this Agreement.

           7.4 Access. The OIP Group will permit representatives of BDI upon
notice received at least one (1) business day in advance to have reasonable
access at during regular business hours, and in a manner so as not to interfere
with the normal business operations of the OIP Group, to all properties,
personnel, books, records (including Returns), contracts, and documents of or
pertaining to the BDI IP and/or the OAC IP.

           7.5 Notice of Developments. The OIP Group will give prompt written
notice to BDI any development, event or circumstance that would result in a


                                       27
<PAGE>

Material Adverse Effect or cause a failure of any of the conditions set forth in
Section 8 hereof. No disclosure by the OIP Group pursuant to this Section 7.5,
however, shall be deemed to prevent or cure any misrepresentation or breach of
warranty.

7.6 Disclosure Schedule Supplements. From the Effective Date until the Closing,
the OIP Group shall amend and supplement the Disclosure Schedule attached hereto
as Exhibit I on such date or dates, if any, as may be necessary to keep the
disclosures made therein and in the representations and warranties made herein
true, accurate and complete in all material respects.

8. Conditions to Obligation to Close.

           8.1 Conditions to Obligation of the BSML Group. The obligation of the
BSML Group to consummate the transactions to be performed by it in connection
with the Closing is subject to satisfaction of the following conditions:

                     (a) the representations and warranties set forth in Section
           4 above shall be true and correct in all material respects at and as
           of the Closing except for breaches, inaccuracies and omissions which
           have neither had nor reasonably would be expected to have a Material
           Adverse Effect;

                     (b) the OIP Group shall have performed and complied with
           all of its covenants set forth in this Agreement in all material
           respects through the Closing;

                     (c) there shall not be any injunction, judgment, order,
           decree, ruling, or charge in effect preventing consummation of any of
           the transactions contemplated by this Agreement;

                     (d) each of the deliveries required to be made by the OIP
           Group pursuant to Section 6 shall be fully completed, including the
           due execution where required of all documents to be executed by any
           member of the OIP Group;

                     (e) the boards of directors of the BSML Group and the audit
           committee of BriteSmile shall have approved the execution, delivery
           and performance of this Agreement;



                                       28
<PAGE>

(f)        the OIP Group shall have paid or agreed to accept responsibility for
           all operating expenses and charges incurred in the ordinary course of
           business through the Closing relating to the Transferred Assets; and

                     (g) REM, Oraceutical and IDEX shall have entered into a
           representation agreement with Niro, Scavone, Haller & Niro for the
           defense of P&G vs. Oraceutical, et al. Civil No. C-1-03-433 (the "P&G
           Suit").

The BSML Group may waive any condition specified in this Section 8.1 if it
executes a writing so stating at or prior to the Closing.

           8.2 Conditions to Obligation of the OIP Group. The obligation of the
OIP Group to consummate the transactions to be performed by it in connection
with the Closing is subject to satisfaction of the following conditions:

(a)        the representations and warranties set forth in Section 5 above shall
           be true and correct in all material respects at and as of the Closing
           except for breaches, inaccuracies and omissions which have neither
           had nor reasonably would be expected to have a Material Adverse
           Effect;

(b)        each of the deliveries required to be made by the BSML Group
           pursuant to Section 6 shall be fully completed;

(c)        the BSML Group shall have performed and complied with all of its
           covenants hereunder in all material respects through the Closing;

(d)        there shall not be any injunction, judgment, order, decree, ruling,
           or charge in effect preventing consummation of any of the
           transactions contemplated by this Agreement; and

(e)        BDI and BriteSmile shall have entered into a representation agreement
           with Niro, Scavone, Haller & Niro for the defense of the P&G Suit.

The OIP Group may waive any condition specified in this Section 8.2 if it
executes a writing so stating at or prior to the Closing.



                                       29
<PAGE>

9.         Indemnification

9.1        Indemnification by the OIP Group.

               (a) Duty to Indemnify. The OIP Group agrees to indemnify and hold
          the BSML Group and its  Affiliates  harmless from all claims,  losses,
          liabilities,  damages,  deficiencies,  costs, penalties,  interest and
          expenses,   including  reasonable  attorneys'  fees  and  expenses  of
          investigation (each a "Loss") incurred by the BSML Group or any of its
          Affiliates  relating to or resulting from (i) any material breach of a
          representation  or breach of any warranty of the OIP Group, or failure
          by the OIP  Group to  perform  or  comply  with any  covenant  that is
          contained  herein or in any  exhibit or other  document  delivered  in
          connection   with   this   Agreement   by  the   OIP   Group   or  its
          representatives;  (ii) any claim or action by any third party which is
          or was in  privity  with any member of the OIP Group  questioning  the
          validity  of,  claiming  any interest in or seeking to rescind the OIP
          Group's  transfer of any  Transferred  Assets to BDI; (iii) except for
          Assumed Liabilities,  any liabilities,  obligations or commitments of,
          or claims  against,  the OIP Group, or against or involving any of the
          Transferred Assets arising out of any act or omission of the OIP Group
          prior to Closing;  or (iv) any successful claim of infringement of any
          third party patent,  copyright or other personal or proprietary  right
          relating to the Transferred  Assets in the form  commercialized  as of
          the Effective Date and transferred by the OIP Group to BDI. As used in
          the preceding sentence,  a successful claim of infringement is a final
          and  unappealable  decision of a U.S.  federal court holding that such
          Transferred Assets in the form commercialized as of the Effective Date
          infringed  such third party  patent,  copyright  or other  personal or
          proprietary right and that such third party patent, copyright or other
          personal proprietary right is valid and enforceable.  It is understood
          and agreed that any product,  material,  method, equipment or the like
          that incorporates or embodies any of the Transferred Assets is not "in
          the form  commercialized  as of the Effective Date and  transferred by
          the  OIP  Group  to  BDI"  if (x) it  further  includes  or is used in
          combination  with other  technology,  provided  that the  infringement
          involves  the  combination  or  the  other  technology,  or  (y)  is a
          particular embodiment of a product, material, method, equipment or the
          like  (as  the  case  may  be)  not  specifically   disclosed  in  the
          Transferred  Assets.  It is understood and agreed that, as between the
          OIP Group and the BSML Group, the BSML Group is solely responsible for
          testing and  assuring  the safety and efficacy  (including,  e.g.,  by
          conducting  appropriate  clinical  trials)  of any and  all  products,
          materials,  methods,  equipment  and the like  marketed,  used,  sold,
          distributed  or  otherwise  commercialized  by any  member of the BSML
          Group  and,  therefore,  no  member  of the OIP  Group  will  have any


                                       30
<PAGE>

          obligation  hereunder  with  respect  to any Loss  caused by a lack of
          safety or efficacy.

                     In no event shall the OIP Group be liable for, or subject
           to indemnification obligations for, any Loss to the extent it arises
           out of modifications, extensions or other changes to the Technology
           or other Transferred Assets made by BDI, or to the extent it arises
           out of applications of the Technology or other Transferred Assets in
           areas outside of the HOC field of use.

                     (b) Term of Indemnification. The OIP Group shall not have
           any liability under Section 9.1 for any claim made by any member of
           the BSML Group of which notice is given after the expiration of three
           (3) years from the Closing Date; provided, however, that (i) nothing
           in this Section 9.2 shall limit the obligations of the OIP Group
           under Subsections 9.1(a)(ii) and (iii), which shall survive the
           Closing Date without limitation, and (ii) the representations and
           warranties set forth in Section 4.17 through 4.27 shall survive each
           issuance of Securities for three (3) years.

                     (c) Limitation on Indemnification. Notwithstanding anything
           to the contrary contained in this Section 9.1, the obligations of the
           OIP Group to provide indemnification pursuant to Section 9.1 shall
           not arise unless and until the amount of Losses exceeds $25,000 (the
           "Basket Amount") in the aggregate, whereupon the BSML Group shall be
           entitled to receive indemnity payments in the aggregate amount by
           which all such Losses exceed the Basket Amount.

9.2        Indemnification by the BSML Group.

                     (a) Duty to Indemnify. The BSML Group agrees to indemnify
           and hold the OIP Group and its Affiliates harmless from all Losses
           incurred by the OIP Group or any of its Affiliates relating to or
           resulting from any breach of a representation or warranty of the BSML
           Group, by the BSML Group.

                     (b) Term of Indemnification. The BSML Group shall not have
           any liability under Section 9.2 for any claim made by any member of
           the OIP Group of which notice is given after the expiration of two
           (2) years from the Closing Date.



                                       31
<PAGE>

                     (c) Limitation on Indemnification. Notwithstanding anything
           to the contrary contained in this Section 9.2, the obligations of the
           BSML Group to provide indemnification pursuant to Section 9.2 shall
           not arise unless and until the amount of Losses exceeds the Basket
           Amount in the aggregate, whereupon the OIP Group shall be entitled to
           receive indemnity payments in the aggregate amount by which all such
           Losses exceed the Basket Amount.

10. Confidentiality. The OIP Group acknowledges that, after the Effective Date,
the Transferred Assets will constitute proprietary and confidential information
of BDI ("Confidential Information"), and agrees that it will not use or disclose
such Confidential Information to any third party without the prior written
consent of BDI; provided, however, that the foregoing restriction shall not
apply to any portion of the Confidential Information which (i) is or becomes
generally available to the public in any manner or through no fault of the OIP
Group or its employees, agents or representatives, or (ii) is released for
disclosure with BDI's prior written consent, or (iii) is required by a court or
a governmental agency to be disclosed or is otherwise required by law, or is
necessary in order to establish rights under this Agreement; provided, that,
with respect to clause (iii) above, the OIP Group shall first notify BDI of such
required disclosure and shall take such steps as BDI shall reasonably request to
limit the scope of such disclosure and otherwise protect the confidentiality of
the Confidential Information. Subject to the disclosure requirements applicable
to BriteSmile under the federal securities laws and to both Parties with respect
to existing agreements and/or in connection with legal proceedings, the terms
and conditions of this Agreement shall be considered confidential and shall not
be disclosed (except to each Party's attorneys and accountants on a need-to-know
basis) without the prior written consent of the other Parties, except to the
extent reasonably necessary for purposes of this Agreement or in order to
fulfill obligations under this Agreement. It is understood and agreed that any
disclosure or use of any Confidential Information in violation of this Section
10 would cause BDI irreparable harm, for which monetary damages would not be an
adequate remedy and that BDI shall be entitled to specific performance and
injunctive relief, in addition to other remedies available at law.

11. Other Matters.

     11.1 BDI  Governance.  BDI  agrees  to  appoint  REM to the  BDI  board  of
          directors at Closing.

           11.2 Additional Information. After the Closing and for no additional
consideration to the OIP Group, the OIP Group shall provide to BDI such
additional information concerning and relating to the Transferred Assets as BDI


                                       32
<PAGE>

shall reasonably require in order to obtain detailed descriptions and formulas
for the Related Technology for the BDI IP sufficient for one skilled in the art
to reproduce such.

11.3 Manufacturing Rights. Subject only to thirty (30) days prior written
disclosure to BDI of the third party and product to be manufactured, there shall
be no restrictions on the OIP Group to manufacture products in the HOC field (or
any other fields) for third parties. There shall be no restrictions on the
rights of the OIP Group to manufacture products in the Permitted Field.

11.4 OIP License to BDI. To the extent required by the BSML Group to conduct any
activities in the HOC field, OIP shall grant BDI a irrevocable, perpetual,
royalty free, non-exclusive, world-wide license for any OIP intellectual
property to make, have made, use, sell, offer for sale and import any products
and services in the HOC field.

11.5 Mouthwash Royalty. BriteSmile's obligation to pay OIP a royalty on sales by
the BSML Group of the mouthwash product developed by OIP shall cease after the
Closing Date.

11.6 Future License to OIP in the Permitted Field. At any time following the
Closing a member of the OIP Group may bring to the attention of BDI by written
notice, an opportunity to commercially exploit any of the Transferred Assets,
either alone or in combination with other technology, in the Permitted Field. If
BDI either expressly declines to license the subject Transferred Assets for such
commercial exploitation or fails to do so within a reasonable time period (such
time period in any event not to exceed ninety (90) days after the date of BDI's
receipt of the written notice unless agreed otherwise by BDI and the OIP Group
member at that time), then the OIP Group member in question shall be entitled to
an immediate and automatic royalty free grant of rights and license under the
subject Transferred Assets sufficient for such commercial exploitation in the
Permitted Field. The OIP Group shall have the right, but not the obligation, to
take legal action with respect to any infringement of Transferred Assets in the
Permitted Field, at its own expense. If the OIP Group chooses to take such
action, all costs associated with any such action, including those of defending
any member of the BSML Group which may be named as a party in such action, shall
be borne by the OIP Group. BDI shall cooperate (not including any financial
obligation on the part of BDI) with the OIP Group as it shall reasonably
request, including consenting to being named as a party in any dispute relating
to infringement in the Permitted Field.

11.7 Modification of Technology. If there is any claim or threatened claim for
infringement of a third party proprietary right by the Technology in the form


                                       33
<PAGE>

commercialized as of the Effect Date and transferred by the OIP Group, each
Party agrees to negotiate reasonably with the others to modify such Technology
so that it becomes non-infringing. There shall be no additional consideration
due the OIP Group for such efforts provided by it. Any modified version of the
Technology must be acceptable to BDI.

12. Bankruptcy Provisions. The OIP Group is hereby granted an option to acquire
BDI's rights in and to OAC in the event of a bankruptcy filing, appointment of a
trustee or receiver or other similar insolvency event for BDI (each, an
"Insolvency Event") if more than $1,000,000 remains due and unpaid pursuant to
Sections 3.1, 3.2 and 3.3 of this Agreement. The purchase price for BDI's rights
shall be the fair market value thereof at the time of any Insolvency Event. The
OIP Group shall receive a credit against payment of such purchase price in the
amount of the unpaid balance due the OIP Group under this Agreement.

13. Breach of Agreement; Remedies. If any Party to this Agreement believes
another Party has materially breached any provision of this Agreement, the Party
alleging the breach shall deliver notice to the other Party, specifying the
nature of the alleged breach. The Party alleged to be in breach shall have sixty
(60) days from the date of mailing of such notice in which to attempt to cure
the alleged breach. During such sixty (60) day period, any Party may request a
personal meeting between the Parties in which to negotiate in good faith to
attempt to resolve the dispute. If such negotiations are unsuccessful and the
alleged breach has not been cured by the end of such sixty (60) day period, the
Party alleging the breach may pursue any and all rights and remedies that it has
under this Agreement, at law or in equity, in any judicial or arbitration
proceedings.

14. LIMITATION OF LIABILITY. IN NO EVENT SHALL ANY PARTY BE LIABLE FOR ANY
INDIRECT, SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES ARISING OUT OF OR IN
CONNECTION WITH THIS AGREEMENT, WHETHER OR NOT SUCH DAMAGES WERE FORESEEN OR
UNFORESEEABLE; PROVIDED, HOWEVER, THAT THE FOREGOING LIMITATION OF LIABILITY
SHALL NOT LIMIT THE INDEMNIFICATION OBLIGATIONS SET FORTH HEREIN. IN ALL EVENTS,
THE CUMULATIVE LIABILITY OF THE OIP GROUP TO THE BSML GROUP FOR ANY LOSS ARISING
OUT OF OR IN CONNECTION WITH THIS AGREEMENT SHALL BE LIMITED TO THE TOTAL AMOUNT
RECEIVED FROM OR TO BE PAID TO THE OIP GROUP UNDER SECTIONS 3.1, 3.2 AND 3.3 OF


                                       34
<PAGE>

THIS AGREEMENT, EXCEPT IN THE CASE OF A LOSS ARISING OUT OF FRAUD OR DELIBERATE
MISREPRESENTATION OF FACT BY THE PARTY FROM WHOM SUCH LOSSES ARE SOUGHT TO BE
RECOVERED.

15. Miscellaneous.

           15.1 Expenses. Each Party shall bear its own legal fees and other
expenses incurred by it in connection with the negotiation of this Agreement and
the carrying out of the transaction contemplated hereby.

           15.2 Additional Actions and Documents. Each Party agrees to perform
such additional acts and to execute such additional documents as are reasonably
necessary to carry out the transactions contemplated by this Agreement and to
assist BDI to obtain, perfect and protect its interest in the Transferred
Assets.

           15.3 Notice. All notices between the parties shall be in writing and
shall be sent by certified or registered mail or commercial overnight delivery
service, with provisions for a receipt, to the address of the other party listed
below (or to such other address as a party may furnish to the other in writing):



           For OIP Group:              Mr. R. Eric Montgomery
                                       Oraceutical LLC
                                       815 Pleasant St.
                                       Lee, MA  01238
                                       (413) 528-5070
                                       (413) 537-9725 (fax)

           with a copy to:             Peter D. McDermott, Esq.
                                       Banner & Witcoff, Ltd.
                                       28 State Street
                                       28th Floor
                                       Boston, MA  02109
                                       (617) 720-9600
                                       (617) 720-9601 (fax)

           For BSML and BDI:           Mr. John Reed
                                       Mr. Nhat Ngo
                                       BriteSmile, Inc.
                                       490 North Wiget Lane
                                       Walnut Creek, CA  94598
                                       (925) 279-2865
                                       (925) 941-6266 (fax)



                                       35
<PAGE>

           with a copy to:             Jeffrey M. Jones, Esq.
                                       Durham Jones & Pinegar
                                       111 East Broadway
                                       Suite 900
                                       Salt Lake City, Utah  84111
                                       (801) 415-3000
                                       (801) 415-3500 (fax)

           and                         Joseph A. Mahoney, Esq.
                                       Mayer, Brown, Rowe & Maw
                                       190 South LaSalle
                                       Chicago, IL  60603
                                       (312) 701-8979
                                       (312) 706-8530 (fax)

           15.4 Entire Agreement; Amendment; Waiver. This Agreement, together
with the Exhibits hereto, and the additional documents required to be delivered
at the Closing pursuant hereto, constitutes the complete agreement between the
Parties and supersedes all previous representations, written or oral, with
respect to the Technology or other subject matter of this Agreement, including
the MOU. Except as otherwise expressly provided herein, this Agreement may be
modified or amended only by a writing signed by duly authorized representatives
of all Parties. The waiver by any Party of any default or breach of this
Agreement, or any obligation hereunder, shall be ineffective unless in writing,
and shall not constitute a waiver of any subsequent breach or default. No
failure to exercise any right or power under this Agreement or to insist on
strict compliance by another Party shall constitute a waiver of the right in the
future to exercise such right or power or to insist on strict compliance.

           15.5 Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the state of Delaware, without regard to any law
regarding conflicts of laws. The parties consent to the jurisdiction and venue
of Delaware state and federal courts in any action arising out of this
Agreement. In any legal action arising out of this Agreement, the prevailing
party shall be entitled to an award of its costs and reasonable attorneys' fees.

           15.6      Cumulative Remedies.  All rights and remedies provided in
this Agreement, at law or in equity are cumulative.

           15.7 Severability. If any term of this Agreement is held invalid or
unenforceable by a court or arbitrator of competent jurisdiction, such terms
shall be reduced or otherwise modified by such court or arbitrator to the
minimum extent necessary to make it valid and enforceable. If such term cannot
be so modified, it shall be severed and the remaining terms of this Agreement


                                       36
<PAGE>

shall be interpreted in such a way as to give maximum validity and
enforceability to this Agreement.

           15.8 Binding Effect; Assignment. This Agreement is binding upon the
parties and their respective successors, representatives and assigns. No Party
may assign this Agreement or any of their obligations or rights hereunder
without prior written consent of BDI.

           15.9 Force Majeure. No Party shall be liable for any failure or delay
in performing hereunder, if such failure or delay is due to war, strike,
government requirements, acts of nature, acts or omissions of carriers, or other
cause(s) beyond its reasonable control.

           15.10 Counterparts. This Agreement may be executed in counterparts,
and all counterparts shall be deemed to be one and the same agreement.

           15.11 No Agency. The Parties are independent contractors, and this
Agreement shall not be construed to create any agency or partnership between
them. No Party has authority to bind the other, to incur any liability or act on
behalf of the other, or to direct the other's employees.

                   [Remainder of Page Intentionally Left Bank.
                            Signature Page Follows.]



                                       37
<PAGE>



IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the
Effective Date.


                                     ------------------------------------------
                                     R. Eric Montgomery, an individual

                                     ORACEUTICAL INNOVATIVE PROPERTIES, LLC,
                                     a Delaware limited liability company



                                     By:       ________________________________
                                     Title:    ________________________________


                                     ORACEUTICAL LLC, a Delaware limited
                                     liability company



                                     By:       ________________________________
                                     Title:    ________________________________


                                     ORACEUTICAL ACQUISITION LLC, a Delaware
                                     limited liability company



                                     By:       ________________________________
                                     Title:    ________________________________


                                     BRITESMILE, INC., a Utah corporation



                                     By:       ________________________________
                                     Title:    ________________________________


                                     BRITESMILE DEVELOPMENT, INC., a Delaware
                                     corporation



                                     By:       ________________________________
                                     Title:    ________________________________



                                       38
<PAGE>



LIST OF EXHIBITS

Exhibit A: Side Agreement
Exhibit B: OAC IP description
Exhibit C: OAC Patent Assignment
Exhibit D: BDI IP description
Exhibit E: Static Mixer Patent License
Exhibit F: BDI Patent Assignment
Exhibit G: XXXXXXXX
Exhibit H: PSC LOI
Exhibit I: The OIP Group Disclosure
Exhibit J: P&G Standstill Agreement
Exhibit K: Bill of Sale
Exhibit L:           OAC Operating Agreement
Exhibit M: Assignment of licenses and rights assigned to OAC
Exhibit N: Permitted Field Assignment
Exhibit O: BDI Consulting Agreement
Exhibit P: B&W legal opinion
Exhibit Q: OAC Patent License Agreement
Exhibit R: Registration Rights Agreement
Exhibit S: BriteSmile Guaranty
Exhibit T: Consulting Agreement






* Redacted pursuant to a Request for Confidential Treatment filed with the SEC.

                                       39