<PAGE>
Exhibit 10.18  


                  This STOCK  PURCHASE  AGREEMENT,  dated as of Otober 31,  1996
(this  "Agreement"),  by and among EXTENDED FAMILY CARE CORPORATION,  a New York
corporation, with its principal place of business at One Old Country Road, Carle
Place, New York 11514 (the "Company") and ARBOR HOME HEALTH CARE HOLDING, LLC, a
New York limited liability company,  with its principal place of business at 333
Earle Ovington Boulevard, Uniondale, New York 11553 (the "Purchaser").
                                               W I T N E S S E T H:

                  WHEREAS,  pursuant to that certain Amended and Restated Option
Agreement  dated October 31, 1995 ("Option  Agreement"),  the Company  (formerly
named Cosmetic  Sciences,  Inc.) has granted to Purchaser the Second Option,  as
defined  therein  ("Second  Option"),  which  entitles the Purchaser to purchase
6,500,000 shares of the Company's common stock,  $.01 par value, as adjusted for
stock  splits,  stock  dividends,  capital  reorganizations  and similar  events
("Second Option Shares"); and

         WHEREAS,  pursuant to the Option Agreement,  Purchaser has the right to
compel the Company to enter into a stock  purchase  agreement  pursuant to which
Purchaser  may  exercise  the Second  Option and the Company  will make  various
representations and warranties as specified in the Option Agreement;

         NOW, THEREFORE,  in reliance upon the  representations,  warranties and
agreements made herein and in  consideration of the premises and mutual promises
herein contained and for other good and valuable consideration,  the receipt and
sufficiency of which are hereby acknowledged,  the parties hereto,  intending to
be legally bound, hereby agree as follows:

                                                     ARTICLE I
                          MATTERS RELATING TO THE EXERCISE OF THE SECOND OPTION

         Section 1.01.  Exercise of the Second Option.  Subject to the terms and
provisions hereof, upon the Purchaser's  compliance with Section 1.02(i) herein,
which  provides  for (i) the delivery by Purchaser to the Company of a notice of
exercise of the Second  Option and (ii) delivery by Purchaser to the Company the
amount of Six Hundred Fifty  Thousand  ($650,000.00)  Dollars  representing  the
purchase price of the Second Option Shares ("Purchase Price"), the Company shall
issue to Purchaser the Second Option Shares.

         Section  1.02.  The Closing.  The closing of the exercise of the Second
Option  (the  "Closing")  shall  be  held  at the  offices  of  Meltzer,  Lippe,
Goldstein, Wolf & Schlissel, P.C., 190 Willis Avenue, Mineola, New York 11501 or
at such other place or places as the parties  may agree upon,  at 11:00  o'clock
A.M.,  New York time,  on October 31, 1996 or such other time and date as may be
mutually approved by the parties in writing, but not later than November 1, 1996
(the "Closing Date"). At the Closing, the following shall occur:



<PAGE>



                  (i) Purchaser will deliver to the Company the Purchase  Price,
         by certified  check or wire  transfer in the amount of $650,000,  along
         with a notice of exercise as required  under the Option  Agreement,  in
         the form annexed hereto as Exhibit B.

                  (ii) If Purchaser has complied with subparagraph  1.02(i), the
         Company  will issue an  Acknowledgement  of Exercise of Option,  in the
         form annexed hereto as Exhibit C, and a stock certificate  representing
         the Second Option Shares.

         Section 1.03.  Failure to Timely Close. If, other than through fault of
Purchaser,  the Closing does not occur in the time  periods  provided for above,
then Purchaser may, in its discretion, extend the time period for the Closing to
occur for so long as it may deem  appropriate.  Such  extension  shall not be in
derogation of any other rights of Purchaser  under this  Agreement or the Option
Agreement.

                                                    ARTICLE  II
                                   REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company  represents and warrants to the  Purchaser,  as of the date
hereof, and as of Closing, as follows:

         Section  2.01.  Title.  The  Second  Option  Shares,  when  issued  and
delivered to Purchaser in accordance  with Section 1.01 and Section 1.02 hereof,
shall be duly and validly  authorized,  issued and  outstanding,  fully paid and
non-assessable.  The Second Option  Shares are being sold to Purchaser  free and
clear of any and all liens, claims and encumbrances.

         Section 2.02.  Due  Incorporation.  The Company is a  corporation  duly
incorporated,  validly existing and in good standing under the laws of the State
of New York and has full  corporate and other power and authority to conduct its
business  and own its  properties  as now  conducted  and owned.  The Company is
qualified as a foreign  corporation in all  jurisdictions in which the nature of
its  properties  and  business   requires  such   qualification   and  in  which
noncompliance  with such  qualification  would materially affect the business of
the Company.

         Section  2.03.  Capital   Structure.   The  Company's  current  capital
structure is as follows:  50,000,000 shares of common stock authorized, of which
25,500,226  shares  are  outstanding;   10,000,000  shares  of  Preferred  Stock
authorized,  none of which are  outstanding.  Other than the  Option  Agreement,
there are no agreements to issue any of the Company's securities, including, but
not limited to, subscriptions,  warrants, options, convertible securities or the
rights to purchase or otherwise  acquire the  Company's  securities.  All issued
securities  of the  Company are  validly  issued and fully paid,  non-assessable
(subject to the provisions of Section 630 of the Business Corporation Law of the
State  of New  York),  are  owned  free  and  clear  of any  liens,  pledges  or
encumbrances (except as specifically noted herein), and all


<PAGE>



issued securities have been issued in compliance with all applicable Federal and
state securities laws.

         Section 2.04.  Power and Authority;  No Defaults.  The Company has full
power and  authority  and has  taken all  required  corporate  and other  action
necessary  to permit the  Company to execute  and deliver  this  Agreement,  and
otherwise  to carry out the  terms of this  Agreement  and all other  documents,
instruments or transactions required or contemplated by this Agreement.  None of
such actions will violate any provision of the Certificate of  Incorporation  or
By-laws of the Company, or result in the breach of or constitute a default under
any agreement or instrument or court order to which the Company is a party or by
which it is bound or result in the creation or imposition of any material  lien,
claim or encumbrance  on any asset of the Company.  No event has occurred and no
conditions  exist which would  constitute  violations  of this  Agreement or the
Option Agreement.

         Section 2.05. Enforceability. This Agreement has been duly executed and
delivered by the Company and constitutes the valid and binding obligation of the
Company enforceable against the Company in accordance with its terms, subject to
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
enforcement of creditors' rights generally, and except that no representation or
warranty is made as to the availability of the remedy of specific performance or
other equitable remedies. No agreement to which the Company is a party gives any
rights to any person to terminate any  agreements  with the Company or otherwise
to exercise  rights  against the Company,  as a result of the  execution of this
Agreement or the performance of the transactions hereby contemplated.

         Section  2.06.   Litigation.   There  are  no  suits,   proceedings  or
investigations  pending or  threatened  against or affecting  the  Company,  its
assets or any  officer or  director  of the  Company,  which has or could have a
material  adverse effect on the business,  assets or financial  condition of the
Company,  or which  concern  in any way the  transactions  contemplated  by this
Agreement.

         Section  2.07.  Title to Assets.  The Company  has good and  sufficient
title to all of the properties and assets which it currently deems necessary for
the  conduct  of its  business.  The  Company  owns  not  less  than  80% of the
outstanding  stock of TPC Home Care  Services,  Inc.,  its operating  subsidiary
("TPC").

         Section 2.08. Permits,  Licenses,  etc. The Company has all franchises,
permits,  licenses,  and other rights which it currently deems necessary for the
conduct of its business  (including,  but not limited to, the license of the New
York State  Department of Health to operate TPC as a home care services  agency)
and it knows of no basis  for the  denial  of such  rights  in the  future.  The
Company  is not in  violation  of any order or decree  of any  court,  or of the
provisions  of any  contract or  agreement to which it is a party or by which it
may be bound, or, to the best of its knowledge, of any


<PAGE>



law,  order  or  regulation  of any  governmental  authority,  and  neither  the
execution of this Agreement nor the transactions contemplated hereby will result
in any such violation.

         Section  2.09.  Order  and  Consents.   Except  for  Federal  or  State
securities law  requirements,  if any, the Company is not required to obtain any
order, consent,  approval or authorization of, or presently required to make any
declaration  or  filing  with,  any  United  States  federal,   state  or  local
governmental  authority in  connection  with the  execution and delivery of this
Agreement or its performance of the transactions contemplated herein.

         Section  2.10.  Financial  Information.  The Company has  furnished  to
Purchaser the audited  Consolidated  Balance Sheet of the Company as at December
31, 1995 and 1994 and the related statements of income, shareholders' equity and
cash  flows of the  Company  for the years  then  ended.  The  Company  has also
furnished to Purchaser  its  unaudited  Balance  Sheet as at June 30, 1996,  and
related  statement of income,  stockholder's  equity and cash flow for the three
months  then  ended.  All  such  financial  statements  have  been  prepared  in
accordance with generally accepted accounting  principles  consistently  applied
and fairly  present the financial  position of the Company,  as at the dates and
for the periods to which they relate.  Since the date of the  Company's  Balance
Sheet  as at June  30,  1996  (i)  there  has  been  no  change  in the  assets,
liabilities  or financial  condition of the Company from that  reflected in said
Balance Sheet except for changes in the ordinary course of business which in the
aggregate  have not been  materially  adverse  and  (ii)  none of the  business,
prospects, financial condition,  operations,  property or affairs of the Company
has  been  materially  adversely  affected  by any  occurrence  or  development,
individually or in the aggregate, whether or not insured against.

         The Company  will be liable to  Purchaser  for any damages to Purchaser
resulting  from breach or  inaccuracy  of any of the above  representations  and
warranties.

                                                    ARTICLE III
                                REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

         Purchaser hereby represents and warrants to the Company as follows:

                  (a) Purchaser is a limited  liability  company duly  organized
         and validly subsisting under the laws of the State of New York.

                  (b) This Agreement and the  transactions  contemplated  hereby
         have been duly  authorized by Purchaser and the person  executing  this
         Agreement  on  behalf  of  Purchaser  has all the  required  power  and
         authority  necessary  to permit  Purchaser  to execute and deliver this
         Agreement.

                  (c)  Neither the execution of this Agreement nor the


<PAGE>



         performance of the  transactions  contemplated  hereby will violate the
         governing  operating  agreement of Purchaser or result in the breach of
         or  constitute a default  under any  agreement or  instrument  to which
         Purchaser is a party or by which it is bound.

                  (d) Neither Purchaser nor Ivan Kaufman has been engaged in any
         of  the  events  described  in  Item  401(f)  of  Regulation  S- K,  as
         promulgated under the Securities Exchange Act of 1934, as amended.

                  (e)  Ivan Kaufman owns not less than a 90% interest in
Purchaser.

                                                    ARTICLE IV
                                          SURVIVAL OF VARIOUS AGREEMENTS

         The  Registration  Rights and  Conditional  Put Option  Agreement dated
October 31, 1995 between Coss and the Company,  the Financial Services Agreement
dated  October 31, 1995  between the Company and Arbor  Management,  LLC and the
Voting Trust  Agreement  dated June 10, 1996 between Coss, the Purchaser and the
Company shall all remain in full force and effect.  The Option  Agreement  shall
also remain in full force and effect.




<PAGE>



                                                     ARTICLE V
                                                FURTHER ASSURANCES

         The parties  hereto agree that they will  cooperate with each other and
will execute and deliver, or cause to be executed and delivered,  all such other
instruments  and will take all such other  actions,  as either  party hereto may
reasonably  request  from  time to time in order to  effectuate  the  provisions
hereof.

                                                    ARTICLE VI
                                     CONDITIONS TO THE PURCHASER'S OBLIGATIONS

         The  obligations  of  Purchaser to purchase  the Second  Option  Shares
pursuant to this Agreement shall be subject to the satisfaction of the following
conditions:

         Section 6.01.  Representations and Warranties.  The representations and
warranties  of the  Company  contained  in this  Agreement  shall be true in all
material respects at the execution of this Agreement, and as of the Closing.

         Section 6.02.  Making of Required  Deliveries  under  Section  1.02(i).
Purchaser  shall make the  deliveries  specified  in Section  1.02(i),  it being
understood  that nothing in this Agreement shall require that such deliveries be
made and the  Purchaser  will have no liability of any kind if it chooses not to
make such deliveries.


                                                         ARTICLE VII
                                                   MISCELLANEOUS

         Section 7.01.  Representations and Warranties.  The representations and
warranties  made in this Agreement shall survive the execution of this Agreement
and the Closing Date for a period of three years from the date hereof.

         Section  7.02.  Governing  Law. This  Agreement  shall be construed and
enforced in accordance with the internal,  substantive  laws of the State of New
York, without giving effect to the conflict of law rules thereof.

         Section 7.03. Notices. All notices, consents,  requests,  instructions,
approvals and other  communications  provided for herein shall be deemed validly
given,  made or  served  if in  writing  and  delivered  personally  (as of such
delivery)  or sent by certified  mail (as of two days after  deposit in a United
States post office), postage prepaid:


                  (a)      if to Purchaser, addressed to:

                       Arbor Home Health Care Holding, LLC
                                    333 Earle Ovington Boulevard
                                    Uniondale, New York  11553


<PAGE>



                                    Attention:  Joe Heller


                           with a copy to:

                                    Meltzer, Lippe, Goldstein,
                                     Wolf & Schlissel, P.C.
                                    190 Willis Avenue
                                    Mineola, New York  11501
                         Attention: Allan Grauberd, Esq.


                  (b)      if to Company, addressed to:

                                    Cosmetic Sciences, Inc.
                                    333 Earle Ovington Boulevard
                                    Uniondale, New York  11553
                                    Attention:  Mary Ann Page


                           with a copy to:

                                    Richard Lane, Esq.
                                    One Old Country Road
                                    Carle Place, New York  11514


or such other address as shall be furnished in writing by either
party to the other.

                  Section 7.04 Jurisdiction.  Legal proceedings commenced by the
parties arising out of any of the  transactions  or obligations  contemplated by
this Agreement shall be brought  exclusively in the state courts of the State of
New York or if properly removed, to the federal courts, in either case in Nassau
County,  New York. The parties  irrevocably  and  unconditionally  submit to the
jurisdiction  of such  courts  and  agree  to take  any  and all  future  action
necessary  to submit to the  jurisdiction  of such  courts.  Each of the parties
irrevocably  waives  any  objection  which it may now or  hereafter  have to the
laying of venue of any suit,  action or  proceeding  brought  in any  federal or
state court in Nassau County, New York and further irrevocably waives any claims
that any such  suit,  action or  proceeding  brought  in any such court has been
brought in an inconvenient forum.

                  Section 7.05.  Assignment;  Amendments,  Waivers.  Neither the
Company nor the Purchaser  shall assign any of its rights or  obligations  under
this Agreement without the prior written consent of the other,  except Purchaser
may assign  rights or  delegate  duties  hereunder  as long as the  majority  in
interest of the entity  entitled  to the rights and subject to the duties  under
this  Agreement is owned by Ivan Kaufman,  subject to Article 36 of the New York
Public Health Law. No provision of this  Agreement  may be amended,  modified or
waived except by written agreement duly


<PAGE>



executed by each of the parties.

                  Section 7.06. Entire Agreement.  This Agreement represents the
entire  agreement  between  the  parties  related to the  exercise of the Second
Option and supersedes and cancels any prior oral or written agreement, letter of
intent or understanding related to that subject matter.

                  Section  7.07.  Binding  Agreement.  This  Agreement  shall be
binding  upon and shall  inure to the  benefit of the  parties  hereto and their
respective  successors and, to the extent permitted hereunder,  their respective
assigns,  and no other person shall acquire or have any right under or by virtue
of this Agreement.

                  Section 7.08.  Counterparts.  This Agreement may be
executed in one or more counterparts, and shall become effective
when one or more counterparts have been signed by each of the
parties.

                  IN WITNESS  WHEREOF,  this Stock  Purchase  Agreement has been
duly executed by the parties hereto on the day and year first above written.

                                           EXTENDED FAMILY CARE CORPORATION



                                                     By:Mary Ann Page
                                                        Name:Mary Ann Page
                                                        Title:Vice President



                                           ARBOR HOME HEALTH CARE HOLDING, LLC



                                                     By:Joseph Heller
                                                        Name:Joseph Heller
                                                        Title:Vice President


STATE OF NEW YORK)
                                ) ss.:
COUNTY OF NASSAU )

                  On the 31st day of  October,  1996 before me  personally  came
Joseph  Heller,  to me known to be the Vice  President of ARBOR HOME HEALTH CARE
HOLDING, LLC, in and who executed the foregoing Stock Purchase Agreement, and he
acknowledged to me that he executed the same on behalf of ARBOR HOME HEALTH CARE
HOLDING, LLC.

                                                      WALTER HORN
                                                     NOTARY PUBLIC


<PAGE>




                                 [NOTARIAL SEAL]



STATE OF NEW YORK)
                                ) ss.:
COUNTY OF NASSAU )

                  On the 31st day of  October,  1996 before me  personally  came
Mary Ann Page,  to me known to be the Vice  President  of  EXTENDED  FAMILY CARE
CORPORATION,  in and who executed the foregoing Stock Purchase Agreement, and he
acknowledged  to me that he executed the same on behalf of EXTENDED  FAMILY CARE
CORPORATION.


                                                      WALTER HORN
                                                     NOTARY PUBLIC

                                 [NOTARIAL SEAL]






<PAGE>



                                                     EXHIBIT B


                                           NOTICE OF EXERCISE OF OPTION



All defined  terms used herein have the same  meaning as  specified in the Stock
Purchase Agreement as to which this Notice of Exercise constitutes Exhibit B.


         Pursuant  to Section  1(f) of the  Option  Agreement,  the  undersigned
Purchaser hereby notifies the Company of the exercise of the Second Option.

         As provided in Section 8(a) of the Option  Agreement,  the  undersigned
hereby represents to you that the Second Option Shares are being acquired by the
undersigned for investment and not with a view to the distribution thereof.


                                         ARBOR HOME HEALTH CARE HOLDING, LLC



                                                     By: Joseph Heller
                                                              Vice President


<PAGE>



                                                     EXHIBIT C


                                       ACKNOWLEDGMENT OF EXERCISE OF OPTION



All defined  terms used herein have the same  meaning as  specified in the Stock
Purchase Agreement as to which this Acknowledgment
constitutes Exhibit C.


         The Company hereby acknowledges the Purchaser's  exercise of the Second
Option as in conformity with the requirements specified for such exercise in the
Option Agreement.  The Company hereby acknowledges that Purchaser's  obligations
specified in Section 1.02(i) have been complied with by Purchaser.


                                               EXTENDED FAMILY CARE CORPORATION



                                                     By: Mary Ann Page