SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    INFORMATION TO BE INCLUDED IN STATEMENTS
                 FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS
                     THERETO FILED PURSUANT TO RULE 13d-2(a)

                       (AMENDMENT NO. 16 TO SCHEDULE 13D)

                    Under the Securities Exchange Act of 1934

                                BRITESMILE, INC.
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $.001 PER SHARE
                         (Title of Class of Securities)

                                    110415106
                                 (CUSIP Number)


                              CRAIGH LEONARD, ESQ.
                             Morrison & Foerster LLP
                           1290 Avenue of the Americas
                          NEW YORK, NEW YORK 10104-0050
                                 (212) 468-8007
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  June 1, 2006
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check
the following box. |_|


                                  Page 1 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    LCO INVESTMENTS LIMITED

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    WC

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    GUERNSEY, CHANNEL ISLANDS

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    3,567,420 (which includes 341,668
                                        shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    3,567,420 (which includes 341,668
                                        shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     3,567,420 (which includes 341,668
      owned by each reporting person    shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    33.82%

(14)  Type of reporting person (see
      instructions).................    CO


                                  Page 2 of 15


                                  SCHEDULE 13D


CUSIP NO. 110415106

(1)   Name of reporting persons.....    THE ERSE TRUST

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    Not applicable

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    GUERNSEY, CHANNEL ISLANDS

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    None

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    None

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     3,567,420 (which includes 341,668
      owned by each reporting person    shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    33.82%

(14)  Type of reporting person (see
      instructions).................    OO(Trust)

The inclusion of The ERSE Trust in this Statement shall not be construed as an
admission that such party is, for purposes of Section 13(d) of the Securities
Exchange Act of 1934, the beneficial owner of any securities covered by this
Statement.


                                  Page 3 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    CAP ADVISERS LIMITED

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    WC

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    UNITED KINGDOM

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    52,053

(8)   Shared voting power...........    39,636

(9)   Sole dispositive power........    52,053

(10)  Shared dispositive power......    39,636

(11)  Aggregate amount beneficially     3,659,109 (which includes 341,668
      owned by each reporting person    shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    34.6%

(14)  Type of reporting person (see
      instructions).................    CO


                                  Page 4 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    ANTHONY M. PILARO

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    Not Applicable

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    IRELAND

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    None

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    None

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     3,659,109 (which includes 341,668
      owned by each reporting person    shares subject to acquisition within 60
                                        days on exercise of certain Warrants)

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    34.6%

(14)  Type of reporting person (see
      instructions).................    IN

The inclusion of Anthony M. Pilaro in this Statement shall not be construed as
an admission that such person is, for purposes of Section 13(d) of the
Securities Exchange Act of 1934, the beneficial owner of any securities covered
by this Statement.


                                  Page 5 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    THE LCP II TRUST

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    Not Applicable

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    JERSEY, CHANNEL ISLANDS

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    533,335

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    533,335

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     533,335
      owned by each reporting person

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    5.06%

(14)  Type of reporting person (see
      instructions).................    00 (Trust)


                                  Page 6 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    AMP TRUST

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    WC

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    JERSEY, CHANNEL ISLANDS

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    4,500

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    4,500

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     4,500
      owned by each reporting person

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    .04%

(14)  Type of reporting person (see
      instructions).................    00 (Trust)


                                  Page 7 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415106

(1)   Name of reporting persons.....    CAP CHARITABLE FOUNDATION

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    Not Applicable

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    GUERNSEY, CHANNEL ISLANDS

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    7,500

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    7,500

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     7,500
      owned by each reporting person

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    .07%

(14)  Type of reporting person (see
      instructions).................    00 (Trust)


                                  Page 8 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415205

(1)   Name of reporting persons.....    EXCIMER VISION LEASING L.P.

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    WC

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    Delaware

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    318,170

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    318,170

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     318,170
      owned by each reporting person

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    3.01%

(14)  Type of reporting person (see
      instructions).................    PN


                                  Page 9 of 15


                                  SCHEDULE 13D

CUSIP NO. 110415205

(1)   Name of reporting persons.....    CAP PROPERTIES LIMITED

      S.S. or I.R.S. identification
      Nos. of above persons.........

(2)   Check the appropriate box if a    (a) |X|
      member of a group (see
      instructions).................    (b) |_|

(3)   SEC use only..................

(4)   Source of funds (see
      instructions).................    WC

(5)   Check if disclosure of legal
      proceedings is required pursuant
      to items 2(d) or 2(e).........    |_|

(6)   Citizenship or place of
      organization..................    Delaware

Number of shares beneficially owned by
each reporting person with:

(7)   Sole voting power.............    318,170     \1

(8)   Shared voting power...........    None

(9)   Sole dispositive power........    318,170     \1

(10)  Shared dispositive power......    None

(11)  Aggregate amount beneficially     318,170      \1
      owned by each reporting person

(12)  Check if the aggregate amount in
      Row (11) excludes certain shares
      (see instructions)............    |_|

(13)  Percent of class represented by
      amount in Row (11)............    3.01%

(14)  Type of reporting person (see
      instructions).................    CO

\1 CAP Properties is the general partner of Excimer Vision Leasing, L.P. and
has the sole right to vote the shares held directly by Excimer.


                                 Page 10 of 15


                        BRITESMILE, INC. SCHEDULE 13D
                               AMENDMENT NO. 16

NOTE: This Amendment No. 16 amends a Statement on Schedule 13D originally filed
on April 11, 1996 by LCO Investments Limited and others, as amended by an
Amendment No. 1 filed on December 6, 1996, by an Amendment No. 2 filed on May
23, 1997, by an Amendment No. 3 filed on September 24, 1997, by an Amendment No.
4 filed on December 1, 1997, by an Amendment No. 5 filed on May 11, 1998, by an
Amendment No. 6 filed on December 15, 1998, by an Amendment No. 7 filed on July
2, 1999, by an Amendment No. 8 filed on November 8, 1999, by an Amendment No. 9
filed on July 13, 2000, by an Amendment No. 10 filed on January 11, 2001, by an
Amendment No. 11 filed on July 23, 2001, by an Amendment No. 12 filed on
November 13, 2001, by an Amendment No. 13 filed on December 17, 2001, by an
Amendment No. 14 filed on January 27, 2003 and by an Amendment No. 15 filed on
January 7, 2004. This Amendment No. 16 is filed on behalf of LCO Investments
Limited, The ERSE Trust, CAP Advisers Limited, Anthony M. Pilaro, the LCP II
Trust, the AMP Trust, CAP Charitable Foundation, Excimer Vision Leasing L.P. and
CAP Properties Limited .

      This Amendment No. 16 is being filed to reflect (a) a change in the plans
and proposals which the reporting persons have; and (b) to reflect the present
beneficial interests of the reporting persons in BriteSmiles' outstanding Common
stock. There has been no change in the information set forth in response to
Items 1, 2, 3 or 6 of Schedule 13D. Accordingly, those Items are omitted from
this Amendment No. 16.

      The inclusion of The ERSE Trust and Anthony M. Pilaro shall not be
construed as an admission that such parties are, for the purposes of Section
13(d) of the Securities Exchange Act of 1934, the beneficial owners of any
securities covered by this Statement.

Item 4. Purpose of Transaction.

      The reporting persons may seek to acquire additional shares of
BriteSmile's Common Stock in public or private purchases and/or to form a group
with one or more holders of BriteSmile's Common Stock so that the reporting
persons, alone or together with the members of a group, have the power to vote
more than 50% of the outstanding shares of Brite Smile's Common Stock. The
reporting persons may, alone or together with such group, consider and pursue
any of the transactions specified in Item 4 of Schedule 13D including but not
limited to taking BriteSmile private and terminating the registration of its
Common Stock under the Securities and Exchange Act of 1934, as amended. In the
event that the reporting persons, alone or together with the members of a group,
hold more than 50% of the outstanding shares of BriteSmile's Common stock, they
would have the power under BriteSmile's charter and bylaws to appoint the
members of BriteSmile's Board of Directors and to authorize any transactions
required to be approved by BriteSmile's stockholders, including a merger of
BriteSmile with or into another entity and a sale of all or substantially all of
BriteSmile's assets.

Item 5. Interest in Securities of the Issuer.

      Item 5(a)


                                 Page 11 of 15


      Item 5(a) is hereby amended to read in its entirety as follows:

      Reference is made to the cover pages of this Statement for the aggregate
number and the percentage of BriteSmile's outstanding Common Stock which is
beneficially owned by each person listed in Item 2.

Item 7. Material to be Filed as Exhibits

      Exhibit E which was previously filed, is the Power of Attorney and
      Authorizing Agreement appointing Craigh Leonard as Attorney-in-Fact and
      authorizing him to sign the Schedule 13D and all amendments thereto on
      behalf of LCO Investments, The ERSE Trust, CAP Advisers Limited and
      Anthony M. Pilaro.

      Exhibit AA which was previously filed as an exhibit to the Form 3 filed by
      LCP II with respect to shares of Common Stock, is the Power of Attorney
      appointing Craigh Leonard as Attorney-in-Fact and authorizing him to sign
      the Schedule 13D and all amendments thereto on behalf of The LCP II Trust.

      Exhibit CC which was previously filed as an exhibit to the Form 3 filed by
      AMP Trust with respect to shares of Common Stock, is the Power of Attorney
      appointing Craigh Leonard as Attorney-in-Fact and authorizing him to sign
      the Schedule 13D and all amendments thereto on behalf of AMP Trust.

      Exhibit DD which was previously filed as an Exhibit to the Form 3 filed by
      CAP Charitable Foundation with respect to shares of Common Stock, is the
      Power of Attorney appointing Craigh Leonard as Attorney-in-Fact and
      authorizing him to sign the Schedule 13D and all amendments thereto on
      behalf of CAP Charitable Foundation.

      Exhibit FF which was previously filed is the Amended and Restated Joint
      Filing Agreement among LCO Investments Limited, the ERSE Trust, CAP
      Advisers Limited, Anthony M. Pilaro, the LCP II Trust, the AMP Trust, CAP
      Charitable Foundation, Excimer Vision Leasing, L.P. and CAP Properties
      Limited, dated November 24, 2003.

      Exhibit JJ is the Power of Attorney appointing Craigh Leonard as Attorney
      in Fact and authorizing him to sign the Schedule 13D and all amendments
      thereto on behalf of CAP Properties Limited and Excimer Vision Leasing
      L.P.


                                 Page 12 of 15


                                  Signatures

      After reasonable inquiry and to the best of my knowledge and belief, we
certify that the information set forth in this Statement is true, complete and
correct.

Dated: May 31, 2006

                                    LCO INVESTMENTS LIMITED


                                    By  /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact

                                    THE ERSE TRUST


                                    By  /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact

                                    CAP ADVISERS LIMITED


                                    By  /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact


                                        /s/Craigh Leonard
                                        ---------------------------------------
                                        Anthony M. Pilaro, by Craigh Leonard,
                                        Attorney-in-Fact

                                    LCP II TRUST


                                    By: /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact

                                    AMP TRUST


                                    By: /s/Craigh Leonard
                                        ---------------------------------------
                                       Craigh Leonard, Attorney-in-Fact

                                    CAP CHARITABLE FOUNDATION


                                    By: /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact


                                 Page 13 of 15


                                    EXCIMER VISION LEASING L.P.


                                    By: /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact

                                    CAP PROPERTIES LIMITED


                                    By: /s/Craigh Leonard
                                        ---------------------------------------
                                        Craigh Leonard, Attorney-in-Fact


                                 Page 14 of 15