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                                                                     Exhibit 4.8

                                WARRANT AGREEMENT

                  THIS WARRANT AGREEMENT, dated as of February 11, 2000, by and
between CHROMATICS COLOR SCIENCES INTERNATIONAL, INC., a New York
corporation (the "Issuer"), and LB I GROUP INC. (Lehman Brothers Group Inc.), a
Delaware corporation (the "Warrant Holder").

                               W I T N E S S E T H
                               -------------------

                  WHEREAS, the Issuer and the Warrant Holder are parties to the
Preferred Stock Purchase Agreement, dated as of the date hereof (as the same may
be amended, supplemented or otherwise modified from time to time, the "Stock
Purchase Agreement"), pursuant to which the Warrant Holder agreed to purchase
shares of Class B Series 3 Convertible Preferred Stock (the "Preferred Stock")
from the Issuer; and

                  WHEREAS, in order to induce the Warrant Holder to purchase the
Preferred Stock from the Issuer pursuant to the Stock Purchase Agreement, the
Issuer has agreed to execute and deliver this Warrant Agreement and to issue to
the Warrant Holder the Warrants hereinafter described;

                  NOW, THEREFORE, in consideration of the premises the parties
hereto agree as follows:

                  SECTION 1. Definitions. Capitalized terms used herein which
are defined in the Stock Purchase Agreement and are not otherwise defined herein
shall have the respective meanings given thereto in the Stock Purchase Agreement
(regardless of whether such Stock Purchase Agreement shall still be in effect);
and the following terms used herein shall have the meanings indicated below,
unless the context otherwise requires:

                  "Affiliate" shall have the meaning set forth in Rule 144
         adopted by the Commission pursuant to the Securities Act.

                  "Business Day" shall mean any day except Saturday, Sunday and
         any day which shall be a legal holiday or a day on which banks in New
         York, New York are not authorized to conduct business or are required
         to be closed.

                  "Capital Stock" shall have the meaning specified in Section
         2(d) hereof.

                  "Commission" shall mean the Securities and Exchange Commission
         or any entity succeeding to any or all of its functions.

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                  "Common Stock" shall mean the common stock, $.001 par value,
         of the Issuer.

                  "Contractual Obligation" shall mean, as to any Person, any
         provision of any security issued by such Person or of any agreement,
         instrument or other undertaking to which such Person is a party or by
         which it or any of its property is bound.

                  "Convertible Securities" shall mean any stock or other
         securities convertible into or exchangeable for shares of Common Stock.

                  "Current Market Price Per Share" shall have the meaning
         specified in Section 7 hereof.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
         as amended, or any successor federal statute.

                  "Exercise Price" shall mean the exercise price of a Warrant,
         which shall be $6.99 per Warrant Share, subject to adjustment as
         provided in Section 11 hereof.

                  "Expiration Date" shall mean the five (5) year anniversary of
         the date of the Closing or, if such day is not a Business Day, the next
         succeeding Business Day.

                  "Governmental Authority" shall mean any nation or government,
         any state or other political subdivision thereof and any entity
         exercising executive, legislative, judicial, regulatory or
         administrative functions of or pertaining to government.

                  "Management Option Plan" shall mean the Issuer's 1992 Stock
         Option Plan, as in effect on the date hereof, which plan provides for
         the issuance, upon exercise of the options granted pursuant thereto of
         up to 5,500,000 shares of Common Stock in the aggregate to the
         employees of and certain consultants to the Issuer to be designated by
         the Issuer's Board of Directors.

                  "Management Options" shall mean options granted or issued by
         the Issuer pursuant to the Management Option Plan.

                  "Person" shall mean any natural person, corporation,
         partnership, limited liability company, trust or other entity.

                  "Preferred Stock" shall mean the Class B Series 3 Preferred
         Stock, no par value, of the Issuer.

                  "Requirement of Law" shall mean as to any Person, the
         Certificate of Incorporation and By-Laws or other organizational or
         governing documents of such Person, and any law, treaty, rule or
         regulation or determination of an arbitrator or a court or other
         Governmental Authority, in each case applicable to or binding upon

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         such Person or any of its property or to which such Person or any of
         its property is subject.

                  "Rights" shall mean any rights to subscribe for or to
         purchase, or any options or warrants for the purchase of, shares of
         Common Stock or Convertible Securities. The term "Rights" shall
         include, without limitation, the Warrants and the Management Options.

                  "Securities Act" shall mean the Securities Act of 1933, as
         amended, or any successor federal statute.

                  "Total Warrants" shall mean 254,372, which is the maximum
         number of Warrants contemplated under the Stock Purchase Agreement to
         be issued in connection with the sale of Preferred Stock.

                  "Trading Day" shall mean a day on which the securities market
         on which the Common Stock is listed is open for trading.

                  "Warrant" shall mean a warrant issued pursuant to this Warrant
         Agreement as contemplated under the Stock Purchase Agreement entitling
         the record holder thereof to purchase from the Issuer at the Warrant
         Office one share of Common Stock (subject to adjustment as provided in
         Section 11 hereof) at the Exercise Price at any time before 5:00 P.M.
         local time on the Expiration Date.

                  "Warrant Certificate" shall mean a certificate evidencing one
         or more Warrants, substantially in the form of Exhibit A hereto, with
         such changes therein as may be required to reflect any adjustments made
         pursuant to Section 11 hereof.

                  "Warrant Office" shall mean the office or agency of the Issuer
         at which the Warrant Register shall be maintained and where the
         Warrants may be presented for exercise, exchange, substitution and
         transfer, which office or agency will be the office of the Issuer at 5
         East 80th Street, New York, New York 10021 which office or agency may
         be changed by the Issuer pursuant to notice in writing to the Persons
         named in the Warrant Register as the holders of the Warrants.

                  "Warrant Register" shall mean the register, substantially in
         the form of Exhibit B hereto, maintained by the Issuer at the Warrant
         Office.

                  "Warrant Shares" shall mean the shares of Common Stock
         issuable or issued upon exercise of all or any of the Warrants as the
         number and/or type of such shares may be adjusted from time to time
         pursuant to Section 11 hereof.

         SECTION 2. Representations and Warranties. The Issuer hereby represents
and warrants to the Warrant Holder as follows:

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                  (a) The Issuer is a corporation duly incorporated, validly
         existing and in good standing under the laws of the State of New York
         has the corporate power and authority to execute and deliver this
         Warrant Agreement and the Warrant Certificate, to issue the Warrants
         and to perform its obligations under this Warrant Agreement and the
         Warrant Certificate.

                  (b) The execution, delivery and performance by the Issuer of
         this Warrant Agreement and the Warrant Certificate, the issuance of the
         Warrants and the issuance of the Warrant Shares upon exercise of the
         Warrants have been duly authorized by all necessary corporate action on
         the part of the Issuer and do not and will not violate, or result in a
         breach of, or constitute a default under, or require any consent under,
         or result in the creation of a lien upon the assets of the Issuer
         pursuant to, any Requirement of Law or any Contractual Obligation
         binding upon the Issuer.

                  (c) This Warrant Agreement has been duly executed and
         delivered by the Issuer and constitutes a legal, valid, binding and
         enforceable obligation of the Issuer, except as such enforcement may be
         limited by applicable bankruptcy, insolvency, reorganization,
         moratorium or other similar laws affecting creditors' rights generally
         and except as equitable remedies may be limited by general principles
         of equity. When the Warrants and Warrant Certificates have been issued
         as contemplated hereby, (i) the Warrants and the Warrant Certificates
         will constitute legal, valid, binding and enforceable obligations of
         the Issuer, except as such enforcement may be limited by bankruptcy,
         insolvency, reorganization, moratorium or other similar laws affecting
         creditors' rights generally and except as equitable remedies may be
         limited by general principles of equity (whether such remedies are
         sought in a proceeding at law or in equity) and (ii) the Warrant
         Shares, when issued upon exercise of the Warrants in accordance with
         the terms hereof, will be duly authorized, validly issued, fully paid
         and nonassessable shares of the Common Stock.

                  (d) As of the date of the Closing immediately after giving
         effect to the purchase and sale of the Preferred Stock and Warrants on
         that date (i) the Issuer's capital stock (the "Capital Stock") consists
         of (a) 1,400,000 shares of Class A preferred stock, par value $.01 per
         share, of which 1,380,000 shares are issued and outstanding, (b)
         10,000,000 shares of Class B preferred stock, no par value, of which
         (x) 500,000 shares have been designated Class B Series 1 Preferred
         Stock, par value $.001 per share, of which no shares are issued and
         outstanding, (y) 80,000 shares have been designated Class B Series 2
         Preferred Stock, par value $.001 per share, of which 40,000 shares are
         issued and outstanding, and (z) 40,000 shares have been designated as
         Preferred Stock, all of such Preferred Stock will be issued and
         outstanding upon the consummation of the Closing and (c) 50,000,000
         shares of Common Stock, of which 15,535,481 shares are issued and
         outstanding. All issued and outstanding shares of Capital Stock are
         validly authorized and issued, fully paid and nonassessable and were
         issued in
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         accordance with the registration or qualification provisions of the
         Securities Act or pursuant to valid exemptions therefrom.

         SECTION 3. Issuance of Warrants. The Issuer hereby agrees to issue and
deliver to the Warrant Holder on the date of the Closing Warrants evidencing
rights to purchase 6.3593 shares of Common Stock, subject to adjustment as
provided in Section 11 hereof, for each share of Preferred Stock purchased by
the Warrant Holder pursuant to the Stock Purchase Agreement on the date of the
Closing and at any time on or before 5:00 P.M., New York City time, on the
Expiration Date at a price per share equal to the Exercise Price. On the date of
the Closing simultaneously with the purchase of the Preferred Stock by the
Warrant Holder pursuant to the Stock Purchase Agreement, the Issuer shall
deliver to the Warrant Holder a Warrant Certificate evidencing the Warrants
which the Warrant Holder is entitled to receive at the Closing in accordance
with the terms hereof.

         SECTION 4.     Registration, Transfer and Exchange of Certificates.

                  (a) The Issuer shall maintain at the Warrant Office the
         Warrant Register for registration of the Warrants and Warrant
         Certificates and transfers thereof. On the date hereof the Issuer shall
         register the outstanding Warrants and Warrant Certificates in the name
         of the Warrant Holder. The Issuer may deem and treat the registered
         holder(s) of the Warrant Certificates as the absolute owner(s) thereof
         and the Warrants represented thereby (notwithstanding any notation of
         ownership or other writing on the Warrant Certificates made by any
         Person) for the purpose of any exercise thereof or any distribution to
         the holder(s) thereof, and for all other purposes, and the Issuer shall
         not be affected by any notice to the contrary.

                  (b) Subject to Section 13 hereof, the Issuer shall register
         the transfer of any outstanding Warrants in the Warrant Register upon
         surrender of the Warrant Certificate(s) evidencing such warrants to the
         Issuer at the Warrant Office, accompanied (if so required by it) by a
         written instrument or instruments of transfer in form satisfactory to
         it, duly executed by the registered holder or holders thereof or by the
         duly appointed legal representative thereof. Upon any such registration
         of transfer, new Warrant Certificate(s) evidencing such transferred
         Warrants shall be issued to the transferee(s) and the surrendered
         Warrant Certificate(s) shall be canceled. If less than all the Warrants
         evidenced by Warrant Certificate(s) surrendered for transfer are to be
         transferred, new Warrant Certificate(s) shall be issued to the holder
         surrendering such Warrant Certificate(s) evidencing such remaining
         number of Warrants.

                  (c) Warrant Certificates may be exchanged at the option of the
         holder(s) thereof, when surrendered to the Issuer at the Warrant
         Office, for another Warrant Certificate or other Warrant Certificates
         of like tenor and representing in the aggregate a like number of
         Warrants. Warrant Certificates surrendered for exchange shall be
         canceled.

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                  (d) No charge shall be made for any such transfer or exchange
         except for any tax or other governmental charge imposed in connection
         therewith. Except as provided in Section 13(b) hereof, each Warrant
         Certificate issued upon transfer or exchange shall bear the legend set
         forth in Section 13(b) hereof if the Warrant Certificate presented for
         transfer or exchange bore such legend.

         SECTION 5. Mutilated or Missing Warrant Certificates. If any Warrant
Certificate shall be mutilated, lost, stolen or destroyed, the Issuer shall
issue, in exchange and substitution for and upon cancellation of the mutilated
Warrant Certificate, or in lieu of and substitution for the Warrant Certificate
lost, stolen or destroyed, a new Warrant Certificate of like tenor and
representing an equivalent number of Warrants, but only upon receipt of evidence
satisfactory to the Issuer of such loss, theft or destruction of such Warrant
Certificate and, if reasonably requested, indemnity satisfactory to it. No
service charge shall be made for any such substitution, but all expenses and
reasonable charges associated with procuring such indemnity and all stamp, tax
and other governmental duties that may be imposed in relation thereto shall be
borne by the holder of such Warrant Certificate. Each Warrant Certificate issued
in any such substitution shall bear the legend set forth in Section 13(b) hereof
if the Warrant Certificate for which such substitution was made bore such
legend.

         SECTION 6.   Duration and Exercise of Warrants.

                  (a) The Warrants evidenced by a Warrant Certificate shall be
         exercisable in whole or in part by the registered holder thereof on any
         Business Day at any time from and after the date of the Closing and
         prior to 5:00 P.M. in New York City on the Expiration Date.

                  (b) Subject to the provisions of this Warrant Agreement, upon
         presentation of the Warrant Certificate evidencing the Warrants to be
         exercised, with the form of election to purchase on the reverse thereof
         duly completed and signed by the registered holder or holders thereof,
         to the Issuer at the Warrant Office, and upon payment of the aggregate
         Exercise Price for the number of Warrant Shares in respect of which
         such Warrants are being exercised in lawful money of the United States
         of America, the Issuer shall issue and cause to be delivered to or upon
         the written order of the registered holder(s) of such Warrants and in
         such name or names as such registered holder(s) may designate, a
         certificate for the Warrant Shares issued upon such exercise of such
         Warrants. Any Person(s) so designated to be named therein shall be
         deemed to have become holder(s) of record of such Warrant Shares as of
         the date of exercise of such Warrants. Certificates for the Warrant
         Shares so purchased, representing the aggregate number of shares
         specified in the Warrant Certificate, shall be delivered to the
         registered holder within a reasonable time, not exceeding three (3)
         Business Days, after this Warrant shall have been so exercised. The
         certificates so delivered shall be in such denominations as may be
         requested by the registered holder and shall be registered in the name
         of the registered holder or such other name as shall

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         be designated by such registered holder.

                  (c) If less than all of the Warrants evidenced by a Warrant
         Certificate are exercised at any time, a new Warrant Certificate or
         Certificates shall be issued for the remaining number of Warrants
         evidenced by such Warrant Certificate. Each new Warrant Certificate so
         issued shall bear the legend set forth in Section 13(b) hereof if the
         Warrant Certificate presented in connection with partial exercise
         thereof bore such legend. All Warrant Certificates surrendered upon
         exercise of Warrants shall be canceled.

                  (d) Notwithstanding the foregoing, at any time after the
         six-month anniversary of the date hereof, the Issuer may, at its sole
         option, compel the involuntary conversion of all, but not less than
         all, of the outstanding Warrants into Warrant Shares at the Exercise
         Price in the event that (i) the Current Market Price Per Share (as
         hereinafter defined) is equal to or in excess of two hundred percent
         (200%) of the Exercise Price per Warrant Share for a period of at least
         twenty consecutive Trading Days, (ii) the Warrant Shares have been
         registered under the Securities Act pursuant to Section 6.1 of the
         Stock Purchase Agreement and such registration has been declared
         effective by the Commission and is effective on such date and (iii) the
         Issuer has a sufficient number of authorized shares of Common Stock
         reserved for issuance upon conversion of the Warrants. In the event
         that the Issuer elects to compel such involuntary conversion of all
         outstanding Warrants, it shall promptly notify the Warrant Holder of
         such election at least ten (10) days in advance of the date set forth
         in such conversion notice whereupon the Warrants shall be deemed
         converted into shares of Common Stock as of the date set forth in the
         Issuer's conversion notice.

                  (e) In lieu of physical delivery of the Warrants, provided
         that Issuer's transfer agent is participating in The Depository Trust
         Company ("DTC") Shares Fast Automated Securities Transfer ("FAST")
         program, upon request of the Warrant Holder and in compliance with the
         provisions hereof, the Issuer shall use its best efforts to cause its
         transfer agent to electronically transmit the Warrant Shares to the
         Warrant Holder by crediting the account of the Warrant Holder's prime
         broker with DTC through its Deposit Withdrawal Agent Commission system.
         The time period for delivery described herein shall apply to the
         electronic transmittals described herein.

         SECTION 7. No Fractional Shares. The Issuer shall not be required to
issue fractional shares of Common Stock upon exercise of the Warrants but may
pay for any such fraction of a share an amount in cash equal to the Current
Market Price per Share of Common Stock of such share multiplied by such
fraction. The "Current Market Price Per Share" on any date shall be deemed to
be, for any day, the last bid price for the Common Stock on the principal
securities exchange on which the Common Stock is listed or admitted to trading,
or, if not so listed or admitted to trading on any securities exchange,

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the last sale price for the Common Stock on the National Association of
Securities Dealers National Market System, or, if the Common Stock shall not be
listed on such system, the closing bid price of the Common Stock in the
over-the-counter market.

         SECTION 8. Payment of Taxes. The Issuer will pay all taxes (other than
any applicable income or similar taxes payable by the holders of the Warrants or
Warrant Shares) attributable to the initial issuance of Warrant Shares upon the
exercise of the Warrants; provided that the Issuer shall not be required to pay
any tax which may be payable in respect of any transfer involved in the issue of
any Warrant Certificate or any certificate for Warrant Shares in a name other
than that of the registered holder of a Warrant Certificate surrendered upon the
exercise of a Warrant, and the Issuer shall not be required to issue or deliver
such certificates unless or until the Person or Persons requesting the issuance
thereof shall have paid to the Issuer the amount of such tax or shall have
established to the satisfaction of the Issuer that such tax has been paid.

         SECTION 9.   Reservation and Issuance of Warrant Shares.

                  (a) The Issuer will at all times have authorized, and reserve
         and keep available for the purpose of enabling it to satisfy any
         obligation to issue Warrant Shares upon the exercise of the Warrants,
         the number of shares of Common Stock deliverable upon exercise of all
         outstanding Warrants.

                  (b) Before taking any action which would cause an adjustment
         pursuant to Section 11 hereof reducing the Exercise Price below the
         then par value (if any) of the Warrant Shares issuable upon exercise of
         the Warrants, the Issuer will take any corporate action which may be
         necessary in order that the Issuer may validly and legally issue fully
         paid and nonassessable Warrant Shares at the Exercise Price as so
         adjusted.

                  (c) The Issuer covenants that all Warrant Shares will, upon
         issuance in accordance with the terms of this Warrant Agreement, be
         duly and validly issued, fully paid and nonassessable and free from all
         taxes with respect to the issuance thereof and from all liens, charges
         and security interests created (whether by affirmative action or
         inaction) by the Issuer and shall not have any legends or restrictions
         on resale, except as required by Section 13(b) hereof.

                  (d) The Issuer shall promptly secure the listing of the shares
         of Common Stock issuable upon exercise of the Warrants upon the
         national securities exchange or automated quotation system, if any,
         upon which shares of Common Stock are then listed (subject to official
         notice of issuance upon exercise of the Warrants) and shall maintain,
         so long as any other shares of Common Stock shall be so listed, such
         listing of all shares of Common Stock from time to time issuable upon
         the exercise of the Warrants.

         SECTION 10. Obtaining of Governmental Approvals and Stock Exchange
Listings.

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The Issuer will, at its own expense, (a) obtain and keep effective any
and all permits, consents and approvals of governmental agencies and authorities
which may from time to time be required of the Issuer in order to satisfy its
obligations hereunder and (b) take all action which may be necessary so that the
Warrant Shares, immediately upon their issuance upon the exercise of the
Warrants, will be listed on each securities exchange or over-the-counter market,
if any, on which the Common Stock is then listed if such listing is permitted by
applicable law, regulation or rule.

         SECTION 11. Adjustment of Exercise Price and Number of Warrant Shares
Purchasable. Prior to the Expiration Date, the Exercise Price and the number of
Warrant Shares purchasable upon the exercise of each Warrant are subject to
adjustment from time to time upon the occurrence of any of the events enumerated
in this Section 11.

                  (a) In the event that the Issuer shall at any time after the
         date of this Agreement (i) declare a dividend on the Common Stock in
         Common Stock, Convertible Securities or other Rights, (ii) split or
         subdivide the outstanding Common Stock, (iii) combine the outstanding
         Common Stock into a smaller number of shares, or (iv) issue by
         reclassification of its Common Stock any shares of Common Stock,
         Convertible Securities or other Rights, then, in each such event, the
         number of Warrant Shares purchasable upon exercise of each Warrant
         immediately prior thereto shall be adjusted so that the holder shall be
         entitled to receive the kind and number of such shares or other
         securities of the Issuer which the holder would have owned or have been
         entitled to receive after the happening of any of the events described
         above, had such Warrant been exercised immediately prior to the
         happening of such event (or any record date with respect thereto). Such
         adjustment shall be made whenever any of the events listed above shall
         occur. An adjustment made pursuant to this paragraph (a) shall become
         effective immediately after the effective date of the event retroactive
         to the record date, if any, for the event.

                  (b) If at any time, as a result of an adjustment made pursuant
         to this Section 11, the holder of any Warrant thereafter exercised
         shall become entitled to receive any shares of the Issuer other than
         shares of Common Stock, thereafter the number of such other shares so
         receivable upon exercise of any Warrant shall be subject to adjustment
         from time to time in a manner and on terms as nearly equivalent as
         practicable to the provisions with respect to the Warrant Shares
         contained in this Section 11, and the provisions of this Agreement with
         respect to the Warrant Shares shall apply on like terms to such other
         shares.

                  (c) Whenever the number of Warrant Shares purchasable upon the
         exercise of each warrant is adjusted pursuant to Section 11(a) hereof,
         the Exercise Price per Warrant Share payable upon exercise of each
         Warrant shall be adjusted by multiplying such Exercise Price
         immediately prior to such adjustment by a fraction, the numerator of
         which shall be the number of Warrant Shares purchasable upon the
         exercise of each Warrant immediately prior to such

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         adjustment, and the denominator of which shall be the number of Warrant
         Shares purchasable immediately after such adjustment; provided,
         however, that in no event shall the Exercise Price be adjusted to an
         amount which is less than the par value of the Common Stock.

                  (d) In the event of any capital reorganization of the Issuer,
         or of any reclassification of the Common Stock (other than a
         reclassification referred to in Section 11(a)(iv) above), or in case of
         the consolidation of the Issuer with or the merger of the Issuer with
         or into any other corporation or of the sale of the properties and
         assets of the Issuer as, or substantially as, an entirety to any other
         Person, each Warrant shall, after such capital reorganization,
         reclassification of Common Stock, consolidation, merger or sale, and in
         lieu of being exercisable for Warrant Shares, be exercisable, upon the
         terms and conditions specified in this Warrant Agreement, for the
         number of shares of stock or other securities or assets to which a
         holder of the number of Warrant Shares purchasable (at the time of such
         capital reorganization, reclassification of Common Stock,
         consolidation, merger or sale) upon exercise of such Warrant would have
         been entitled upon such capital reorganization, reclassification of
         Common Stock, consolidation, merger or sale; and in any such case, if
         necessary, the provisions set forth in this Section 11 with respect to
         the rights thereafter of the holders of the Warrants shall be
         appropriately adjusted so as to be applicable, as nearly as they may
         reasonably be, to any shares of stock or other securities or assets
         thereafter deliverable on the exercise of the Warrants. The Issuer
         shall not effect any such consolidation, merger or sale, unless prior
         to or simultaneously with the consummation thereof the successor
         corporation (if other than the Issuer) resulting from such
         consolidation or merger or the corporation purchasing such assets or
         the appropriate corporation or entity shall assume, by written
         instrument, the obligation to deliver to the holder of each Warrant the
         shares of stock, securities or assets to which, in accordance with the
         foregoing provisions, such holder may be entitled and all other
         obligations of the Issuer under this Warrant Agreement. The provisions
         of this paragraph (d) shall apply to successive reorganizations,
         reclassifications, consolidations, mergers and sales.

                  (e) Except with respect to Excluded Securities (as defined
         below), in case the Issuer shall issue any shares of Common Stock or
         Convertible Securities after the date hereof at a price per share (or
         having a conversion or exercise price per share) of less than the
         Exercise Price per Warrant Share, the Exercise Price per Warrant Share
         shall be appropriately adjusted by decreasing (but not increasing) the
         Exercise Price per Warrant Share to such lower price per share. An
         adjustment made pursuant to clause (a) shall be made the next Business
         Day following the date on which any such issuance is made and shall be
         effective retroactively to the close of business on the date of such
         issuance. For purposes of this clause (e), the consideration receivable
         by the Issuer in connection with the issuance of additional shares of
         Common Stock or of Convertible Securities after the date hereof shall
         be deemed to be equal to (X) in the case the consideration received by
         the Issuer is

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         cash, the sum of the aggregate offering price (before deduction of
         underwriting discounts or commissions and expenses payable to third
         parties, if any) of all such Common Stock and/or Convertible Securities
         plus the minimum aggregate amount, if any, payable upon conversion,
         exchange or exercise of any such Convertible Securities, and (Y) in the
         case the consideration received by the Issuer is other than cash, the
         fair market value of the consideration received by the Issuer as
         determined by the good faith judgment of the Board of Directors of the
         Issuer; provided, however, that in the event the Warrant Holder
         disagrees in good faith with the determination of the Board of
         Directors of the Issuer, such fair market value shall be determined by
         a nationally recognized or major regional investment banking firm or
         firm of independent certified public accountants of recognized standing
         (an "Appraiser") selected in good faith by the Warrant Holder; and
         provided, further, that the Issuer, after receipt of the determination
         by such Appraiser shall have the right to select in good faith an
         additional Appraiser meeting the same qualifications, in which case the
         fair market value shall be equal to the average of the determinations
         by each such Appraiser. The issuance or reissuance of any shares of
         Common Stock or Convertible Securities (whether treasury shares or
         newly issued shares) pursuant to a dividend or distribution on, or
         subdivision, combination or reclassification of, the outstanding shares
         of Common Stock requiring an adjustment in the Exercise Price per
         Warrant Share pursuant to clause (a), shall not be deemed to constitute
         an issuance of Common Stock or Convertible Securities by the Issuer
         pursuant to which this clause (e) applies. Upon the expiration or
         termination of any unconverted, unexchanged or unexercised Convertible
         Securities for which an adjustment has been made pursuant to this
         clause (e), the adjustments shall forthwith be reversed to effect such
         Exercise Price per Warrant Share as would have been in effect at the
         time of such expiration or termination had such Convertible Securities,
         to the extent outstanding immediately prior to such expiration or
         termination, had never been issued. For purposes of this clause (e),
         "Excluded Securities" shall mean: (i) shares of Common Stock issuable
         upon conversion of the Preferred Stock; (ii) shares of Common Stock
         issuable or issued to employees of and consultants to the Issuer
         pursuant to the Management Option Plan; (iii) any capital stock issued
         as a stock dividend or upon any stock split or other subdivision or
         combination of shares of the Issuer's capital stock; (iv) shares of
         Common Stock issuable upon conversion of any Convertible Securities
         issued prior to the date hereof and outstanding on the date hereof, (v)
         shares of Common Stock issuable upon conversion of the Issuer's Class A
         Convertible Preferred Stock outstanding on the date hereof or (vi)
         Common Stock issued upon the conversion or exercise of Convertible
         Securities issued after the date hereof as to which an adjustment to
         the Exercise Price per Warrant Share has been made pursuant to this
         clause (e) upon the issuance of such Convertible Securities.

                  (f) Irrespective of any adjustments in the Exercise Price or
         the number or kind of shares purchasable upon exercise of the Warrants,
         Warrant Certificates theretofore or thereafter issued may continue to
         express the same Exercise Price per share and number and kind of shares
         as are stated on the Warrant Certificates

                                       11


<PAGE>

         initially issuable pursuant to this Agreement.

                  (g) If any question shall at any time arise with respect to
         the adjusted Exercise Price or Warrant Shares issuable upon exercise,
         such question shall be determined by the independent auditors of the
         Issuer and such determination shall be binding upon the Issuer and the
         holders of the Warrants and the Warrant Shares.

         SECTION 12. Notices to the Warrant Holder. Upon any adjustment of the
Exercise Price or number of Warrant Shares issuable upon exercise pursuant to
Section 11 hereof the Issuer shall promptly, but in any event within ten
Business Days thereafter, cause to be given to the Warrant Holder, at its
address appearing on the Warrant Register by first- class mail, postage prepaid,
a certificate signed by its chief financial officer setting forth the Exercise
Price as so adjusted and/or the number of shares of Common Stock issuable upon
the exercise of each Warrant as so adjusted and describing in reasonable detail
the facts accounting for such adjustment and the method of calculation used.
Where appropriate, such certificate may be given in advance and included as a
part of the notice required to be mailed under the other provisions of this
Section 12.

         In the event:

                  (a) the Issuer shall authorize issuance to all holders of
         Common Stock of rights or warrants to subscribe for or purchase Capital
         Stock of the Issuer or of any other subscription rights or warrants; or

                  (b) the Issuer shall authorize a dividend or other
         distribution to all holders of Common Stock payable in evidences of its
         indebtedness, cash or assets; or

                  (c) of any consolidation or merger to which the Issuer is a
         party and for which approval of any stockholders of the Issuer is
         required, or of the conveyance or transfer of the properties and assets
         of the Issuer substantially as an entirety, or of any capital
         reorganization or reclassification or change of the Common Stock (other
         than a change in par value, or from par value to no par value, or from
         no par value to par value, or as a result of a subdivision or
         combination); or

                  (d) of the voluntary or involuntary dissolution, liquidation
         or winding up of the Issuer; or

                  (e) the Issuer shall authorize any other action which would
         require an adjustment of the Exercise Price or number of Warrant Shares
         issuable upon exercise pursuant to Section 11 hereof;

then the Issuer shall cause to be given to the Warrant Holder at its address
appearing on the Warrant Register, at least twenty (20) Business Days prior to
the applicable record date hereinafter specified (or as expeditiously as
possible after the occurrence of any

                                       12


<PAGE>

involuntary dissolution, liquidation or winding up referred to in clause (d)
above), by first- class mail, postage prepaid, a written notice stating (i) the
date as of which the holders of record of Common Stock to be entitled to receive
any such rights, warrants or distribution are to be determined, or (ii) the date
on which any such consolidation, merger, conveyance, transfer, dissolution,
liquidation or winding up is expected to become effective (or has become
effective, in the case of any involuntary dissolution, liquidation or winding
up), and the date as of which it is expected that holders of record of Common
Stock shall be entitled to exchange their shares for securities or other
property, if any, deliverable upon such reclassification, consolidation, merger,
conveyance, transfer, dissolution, liquidation or winding up. The failure to
give the notice required by this Section 12 or any defect therein shall not
affect the legality or validity of any distribution, right, warrant,
consolidation, merger, conveyance, transfer, dissolution, liquidation or winding
up, or the vote upon any action.

                  SECTION 13.   Restrictions on Transfer.

                  (a) The Warrant Holder represents that it is not acquiring the
         Warrants (and upon any exercise of the Warrants, each holder represents
         that it will not be acquiring the Warrant Shares) with a view to any
         distribution or public offering within the meaning of the Securities
         Act but subject to any requirement of law that the disposition of its
         property shall at all times be within its control. The Warrant Holder
         acknowledges that the Warrant Shares issuable upon exercise of the
         Warrants have not as of the date hereof been registered under the
         Securities Act and agrees that it will not sell or otherwise transfer
         any of its Warrant Shares except upon the terms and conditions
         specified herein.

                  (b) (i) The Warrant Holder agrees, and each subsequent
         transferee described in paragraph (ii) below shall agree, that it will
         not transfer any Warrant Shares except pursuant to an exemption from,
         or otherwise in a transaction not subject to, the registration
         requirements of the Securities Act (as confirmed in an opinion of
         counsel reasonably acceptable to the Issuer to the transferor to the
         effect that the proposed transfer may be effected without registration
         under the Securities Act) or pursuant to an effective registration
         statement under the Securities Act.

                  (ii) Each Warrant Certificate and each certificate for the
         Warrant Shares (unless the legal opinion delivered in connection
         therewith is to the effect that the first paragraph of such legend is
         not required in order to ensure compliance with the Securities Act)
         shall include a legend in substantially the following form:

         THE WARRANTS AND UNDERLYING SHARES REPRESENTED BY THIS CERTIFICATE HAVE
         NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR STATE
         SECURITIES LAWS AND MAY NOT BE SOLD OR TRANSFERRED EXCEPT PURSUANT TO
         AN EFFECTIVE REGISTRATION STATEMENT UNDER, AN EXEMPTION FROM, OR
         OTHERWISE IN A

                                       13


<PAGE>

         TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF SUCH ACT.

         IN ADDITION, THE WARRANTS AND UNDERLYING SHARES MAY BE TRANSFERRED ONLY
         IN COMPLIANCE WITH THE CONDITIONS SPECIFIED IN THE WARRANT AGREEMENT,
         DATED AS OF JUNE 11, 1999, BETWEEN THE ISSUER AND THE INITIAL HOLDER OF
         THE WARRANTS NAMED THEREIN, A COMPLETE AND CORRECT COPY OF WHICH IS
         AVAILABLE FOR INSPECTION AT THE PRINCIPAL OFFICE OF THE ISSUER AND WILL
         BE FURNISHED TO THE HOLDER HEREOF UPON WRITTEN REQUEST AND WITHOUT
         CHARGE.

                  SECTION 14. Amendments and Waivers. Any provision of this
Warrant Agreement may be amended, supplemented, waived, discharged or terminated
by a written instrument signed by the Issuer and the holders of a majority of
the then outstanding Warrants.

         SECTION 15.   Notices.

                  (a) Any notice or demand to be given or made by the holders of
         the Warrants or the Warrant Shares to the Issuer pursuant to this
         Warrant Agreement shall be sufficiently given or made if personally
         delivered, sent by overnight courier or telecopied (in each such case
         delivery will be effective upon receipt) or mailed by certified mail,
         postage prepaid, return receipt requested (delivery will be effective
         three days after the date of mailing) addressed to the Issuer at the
         Warrant Office.

                  (b) Any notice to be given by the Issuer to the Warrant Holder
         shall be sufficiently given if personally delivered, sent by overnight
         courier or telecopied (in each such case delivery will be effective
         upon receipt) or mailed by certified mail, postage prepaid, return
         receipt requested (delivery will be effective three days after the date
         of mailing) addressed to such holder as such holder's name and address
         shall appear on the Warrant Register.

                  SECTION 16. Binding Effect; Third Party Rights. This Warrant
         Agreement shall be binding upon and inure to the sole and exclusive
         benefit of the Issuer, its successors and assigns, the Warrant Holder,
         the registered holders from time to time of the Warrants and the
         Warrant Shares.

                  SECTION 17. Termination. This Warrant Agreement shall
         terminate and be of no further force and effect at 5:00 P.M. New York
         City time on the Expiration Date or the date on which none of the
         Warrants shall be outstanding (whether by reason of the involuntary
         conversion thereof or the expiration thereof by the

                                       14


<PAGE>

Issuer).

                  SECTION 18. Counterparts. This Warrant Agreement may be
         executed in two or more separate counterparts and all of said
         counterparts taken together shall be deemed to constitute one and the
         same instrument.

                  SECTION 19. Governing Law. This Warrant Agreement and each
         Warrant Certificate shall be governed by and construed in accordance
         with the laws of the State of New York without regard to the choice of
         law provisions thereof.

                  SECTION 20. Benefits of this Warrant Agreement. Nothing in
         this Warrant Agreement shall be construed to give to any Person other
         than the Issuer and the registered holders of the Warrants and the
         Warrant Shares any legal or equitable right, remedy or claim under this
         Warrant Agreement.

                                       15


<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Warrant
Agreement to be duly executed and delivered by their proper and duly authorized
officers, as of the date and year first above written.

                                                CHROMATICS COLOR SCIENCES
                                                INTERNATIONAL, INC.


                                                By:_____________________________
                                                   Darby S. Macfarlane
                                                   Chairman and Chief Executive
                                                   Officer

                                                LB I GROUP INC.


                                                By:_____________________________
                                                   Name:
                                                   Title:

                                       16


<PAGE>

                                                                      EXHIBIT  A

                          [FORM OF WARRANT CERTIFICATE]

  THE WARRANTS AND UNDERLYING SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT
  BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR STATE SECURITIES LAWS AND
  MAY NOT BE SOLD OR TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
  STATEMENT UNDER, AN EXEMPTION FROM, OR OTHERWISE IN A TRANSACTION NOT SUBJECT
  TO, THE REGISTRATION REQUIREMENTS OF SUCH ACT. IN ADDITION, THE WARRANTS AND
  UNDERLYING SHARES MAY BE TRANSFERRED ONLY IN COMPLIANCE WITH THE CONDITIONS
  SPECIFIED IN THE WARRANT AGREEMENT, DATED AS OF JUNE 11, 1999, BETWEEN THE
  ISSUER AND THE INITIAL HOLDER OF THE WARRANTS NAMED THEREIN, A COMPLETE AND
  CORRECT COPY OF WHICH IS AVAILABLE FOR INSPECTION AT THE PRINCIPAL OFFICE OF
  THE ISSUER AND WILL BE FURNISHED TO THE HOLDER HEREOF UPON WRITTEN REQUEST AND
  WITHOUT CHARGE.

                               WARRANT CERTIFICATE

                               Evidencing Warrants
                           to Purchase Common Stock of

                  CHROMATICS COLOR SCIENCES INTERNATIONAL, INC.


  No. ___-___ Warrants

         This Warrant Certificate certifies that __________________________
  _________________________________________, or registered assigns, is the
  registered holder of ____ Warrants (the "Warrants") to purchase Common Stock,
  $.001 par value (the "Common Stock"), of CHROMATICS COLOR SCIENCES
  INTERNATIONAL, INC., a New York corporation (the "Issuer"). Each Warrant
  entitles the holder, but only subject to the conditions set forth herein and
  in the Warrant Agreement referred to below, to purchase from the Issuer at any
  time prior to 5:00 P.M., New York City time at the Warrant Office, on February
  11, 2005 or, if such day is not a Business Day, the next succeeding Business
  Day (the "Expiration Date"), one fully paid and nonassessable share of the
  Common Stock of the Issuer (the "Warrant Shares") at a price (the "Exercise
  Price") of $______ per Warrant Share payable in lawful money of the United
  States of America, upon surrender of this Warrant Certificate, execution of
  the annexed Form of Election to Purchase and payment of the Exercise Price at
  the principal place of business of the Issuer (the "Warrant Office"). The
  Exercise Price and number of Warrant Shares purchasable upon exercise of the
  Warrants are subject to adjustment

<PAGE>

  upon the occurrence of certain events as set forth in the Warrant Agreement
  referred to below.

         The Issuer may deem and treat the registered holder(s) of the Warrants
  evidenced hereby as the absolute owner(s) thereof (notwithstanding any
  notation of ownership or other writing hereon made by anyone), for the purpose
  of any exercise hereof and of any distribution to the holder(s) hereof, and
  for all other purposes, and the Issuer shall not be affected by any notice to
  the contrary.

         Warrant Certificates, when surrendered at the Warrant Office by the
  registered holder hereof in person or by a legal representative duly
  authorized in writing, may be exchanged, in the manner and subject to the
  limitations provided in the Warrant Agreement, but without payment of any
  service charge, for another Warrant Certificate or Warrant Certificates of
  like tenor evidencing in the aggregate a like number of Warrants.

         Upon due presentment for registration of transfer of this Warrant
  Certificate at the Warrant Office, a new Warrant Certificate or Warrant
  Certificates of like tenor and evidencing in the aggregate a like number of
  Warrants shall be issued in exchange for this Warrant Certificate to the
  transferee(s) and, if less than all the Warrants evidenced hereby are to be
  transferred, to the registered holder hereof, subject to the limitations
  provided in the Warrant Agreement, without charge except for any tax or other
  governmental charge imposed in connection therewith.

         This Warrant Certificate is one of the Warrant Certificates referred to
  in the Warrant Agreement, dated as of February 11, 2000, by and between the
  Issuer and the Warrant Holder named therein (the "Warrant Agreement"). Said
  Warrant Agreement is hereby incorporated by reference in and made a part of
  this Warrant Certificate and is hereby referred to for a description of the
  rights, limitation of rights, obligations, duties and immunities thereunder of
  the Issuer and the holders.

             [The remainder of this page intentionally left blank]

                                        2


<PAGE>



         IN WITNESS WHEREOF, the Issuer has caused this Warrant Certificate to
  be signed by its duly authorized officers and has caused its corporate seal to
  be affixed hereunto.

                                                       CHROMATICS COLOR SCIENCES
                                                       INTERNATIONAL, INC.


                                                       By:___________________
                                                          Name:
                                                          Title:

  (CORPORATE SEAL)

  ATTEST:

  ---------------------
  Name:
  Title:


                                        3


<PAGE>

                                                                        ANNEX TO
                                                             WARRANT CERTIFICATE



                         [FORM OF ELECTION TO PURCHASE]

                    (To be executed upon exercise of Warrant)


         The undersigned hereby irrevocably elects to exercise the right,
  represented by this Warrant Certificate, to purchase Warrant Shares and
  herewith tenders payment for such Warrant Shares to the order of the Issuer in
  the amount of $__________ in accordance with the terms hereof. The undersigned
  requests that a certificate for such Warrant Shares be registered in the name
  of __________________________ whose address is _______________ and that such
  certificate be delivered to ________________ whose address is
  ____________________. If said number of Warrant Shares is less than all of the
  Warrant Shares purchasable hereunder, the undersigned requests that a new
  Warrant Certificate representing the remaining balance of the Warrant Shares
  be registered n the name of _______________ whose address is
  _______________________ and that such Warrant Certificate be delivered to
  _______________________ whose address is _______________________________.

                                   Signature:
                                             -----------------------------------

                  (Signature must conform in all respects to name of holder as
specified on the face of the Warrant Certificate)


                                             Date:______________________________

<PAGE>

                                                                       EXHIBIT B
                                                            TO WARRANT AGREEMENT


                  CHROMATICS COLOR SCIENCES INTERNATIONAL, INC.


Warrant No.                    Holder                  Shares Underlying Warrant
----------                     ------                  -------------------------

  A-101                  LB I Group Inc.                        220,690
                         3 World Financial Center
                         New York, New York  10285


  A-102                  LB I Group Inc.                        50,000
                         3 World Financial Center
                         New York, New York  10285


  A-103                  LB I Group Inc.                        254,372
                         3 World Financial Center
                         New York, New York  10285

  A-104                  LB I Group Inc.                        50,000
                         3 World Financial Center
                         New York, New York  10285