2525 Dupont Drive, Irvine, CA 92612 (714) 246-4500

August 15, 2006

Dear Stockholder:

      You are cordially invited to attend a special meeting of stockholders of Allergan, Inc., to be held at the Hyatt Regency Irvine, 17900 Jamboree Road, Irvine, California 92614, on Wednesday, September 20, 2006 at 10:00 a.m. local time. We hope you will be present at the special meeting, where you will be asked to consider and vote upon a proposal to approve an amendment to Allergan, Inc.’s Restated Certificate of Incorporation, as amended, to increase the number of authorized shares of common stock.

      The attached notice of special meeting and Proxy Statement describe the matters to be acted upon at the special meeting. If you plan to attend the special meeting in person, please mark the designated box on the enclosed proxy card. Alternatively, if you utilize the telephone or internet voting system, please indicate your plans to attend the special meeting when prompted to do so by the system. If you are a stockholder of record, you should bring the bottom half of the enclosed proxy card as your admission card and present the card upon entering the special meeting. If you are planning to attend the special meeting and your shares are held in street name (by a bank or broker, for example), you should ask the record owner for a legal proxy or bring your most recent account statement to the special meeting so that we can verify your ownership of Allergan common stock. Please note, however, that if your shares are held in street name and you do not bring a legal proxy from the record owner, you will be able to attend the special meeting, but you will not be able to vote at the special meeting.

      Whether or not you plan to attend the special meeting personally, and regardless of the number of shares you own, it is important that your shares be represented at the special meeting. Accordingly, we urge you to promptly complete the enclosed proxy card and return it to the inspector of elections in the postage-prepaid envelope provided, or to promptly use the telephone or internet voting system. If you do attend the special meeting and wish to vote in person, you may withdraw your proxy at that time.

2525 Dupont Drive, Irvine, CA 92612

NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

TO BE HELD ON SEPTEMBER 20, 2006

TO OUR STOCKHOLDERS:

      A special meeting of stockholders of Allergan, Inc., a Delaware corporation (“Allergan” or the “Company”), will be held at the Hyatt Regency Irvine, 17900 Jamboree Road, Irvine, California 92614, on Wednesday, September 20, 2006 at 10:00 a.m., local time, for the following purposes:

      The Board of Directors has adopted a resolution stating the proposed amendment to the Allergan, Inc. Restated Certificate of Incorporation, as amended, and declaring its advisability. The Board of Directors has fixed August 14, 2006 as the record date for determining the stockholders entitled to notice of and to vote at the special meeting and, consequently, only stockholders whose names appeared on the Company’s books as owning the Company’s common stock at the close of business on August 14, 2006 will be entitled to notice of and to vote at the special meeting and any adjournment or postponement thereof.

      ALL STOCKHOLDERS ARE CORDIALLY INVITED TO ATTEND THE SPECIAL MEETING IN PERSON. It is important that your shares of common stock be represented and voted at the special meeting. Whether or not you expect to attend the special meeting, please complete, date, sign and return the enclosed proxy card as promptly as possible in order to ensure your representation at the special meeting. Should you receive more than one proxy card because your shares of common stock are held in multiple accounts or registered in different names or addresses, please sign, date and return each proxy card to ensure that all of your shares of common stock are voted. A postage-prepaid envelope is enclosed for that purpose. You may also vote your proxy by calling the toll-free telephone number shown on your proxy card or by visiting the Internet website address shown on your proxy card. Your proxy may be revoked at any time prior to the special meeting. If you attend the special meeting and vote by ballot, any proxy that you previously submitted will be revoked automatically and only your vote at the special meeting will be counted. However, if your shares of common stock are held of record by a broker, bank or other nominee, your vote in person at the special meeting will not be effective unless you have obtained and present a proxy issued in your name from the record holder.

Irvine, California

August 15, 2006

SEPTEMBER 20, 2006 SPECIAL MEETING OF STOCKHOLDERS

NOTICE OF SPECIAL MEETING AND PROXY STATEMENT

ALLERGAN, INC.

2525 Dupont Drive, Irvine, California 92612

SPECIAL MEETING OF STOCKHOLDERS

TO BE HELD SEPTEMBER 20, 2006

PROXY STATEMENT

Solicitation of Proxies by Allergan’s Board of Directors

      The Board of Directors (the “Board”) of Allergan, Inc. (“Allergan” or the “Company”) is soliciting proxies to be used at the Company’s Special Meeting of Stockholders, to be held at the Hyatt Regency Irvine, 17900 Jamboree Road, Irvine, California 92614, on Wednesday, September 20, 2006 at 10:00 a.m., local time, and at any adjournment or postponement thereof (the “Special Meeting”). This Proxy Statement and the enclosed form of proxy are being mailed to the Company’s stockholders on or about August 21, 2006.

Who Can Vote, Outstanding Shares

      Record holders of the Company’s common stock, par value $0.01 per share (the “Common Stock”), as of August 14, 2006 (the “Record Date”), may vote at the Special Meeting. Each record holder of Common Stock on such date will be entitled to one vote for each share held on the matters to be voted upon at the Special Meeting. As of the Record Date, there were 151,158,148 shares of Common Stock (exclusive of 2,597,796 shares of Common Stock held in treasury) outstanding, each entitled to one vote. The shares of Common Stock held in the Company’s treasury will not be voted at the Special Meeting. There were approximately 5,906 stockholders of record as of the Record Date.

How You Can Vote

      Stockholders of record on the Record Date are eligible to vote at the Special Meeting using one of four methods:

      The Internet and telephone voting procedures are designed to authenticate the stockholder’s identity and to allow stockholders to vote their shares and to confirm that their voting instructions have been properly recorded. Specific instructions are set forth on the enclosed proxy card. In order to be timely processed, an Internet or telephone vote must be received by 11:59 a.m. Central Standard Time on September 19, 2006. If you vote via the Internet or by telephone, you may incur costs such as usage charges from telephone companies or Internet service providers and you must bear these costs. Please note that while all stockholders of record on the Record Date may vote in person or by mail, certain banks and brokerages do not allow for voting by telephone or via the Internet. Regardless of the method you choose, your vote is important. Please vote by following the specific instructions on your proxy card.

How You May Revoke or Change Your Vote

      Any stockholder has the power to revoke his or her proxy at any time before it is voted at the Special Meeting. A proxy may be revoked by a stockholder of record by:

      If your shares are held in street name, you must contact your broker or other nominee to revoke your proxy or change your vote.

      Attendance at the Special Meeting will not, by itself, revoke a proxy. Any written notice of revocation or subsequent proxy may be sent to Allergan, Inc., Attn: Secretary, 2525 Dupont Drive, P.O. Box 19534, Irvine, California 92623, or hand delivered to the Secretary of the Company at or before the voting at the Special Meeting.

General Information on Voting

      Each share of Common Stock represented by each properly executed, unrevoked proxy received in time for the Special Meeting will be voted in the manner specified therein. If the manner of voting is not specified in an executed proxy received by the Company, the proxy will be voted FOR approval of the proposal to amend the Allergan, Inc. Restated Certificate of Incorporation, as amended, to increase the total number of shares of Common Stock that the Company is authorized to issue. As to any other business that may properly come before the Special Meeting, the persons named in the accompanying proxy card will vote in accordance with their best judgment, although the Company does not presently know of any other business.

      Brokers holding shares of record for customers are not entitled to vote on certain matters unless they receive voting instructions from their customers. “Broker non-votes” result when shares are held by a broker who has not received instructions from its customer on such matters and the broker has so notified the Company on a proxy form in accordance with industry practice or has otherwise advised the Company that it lacks voting authority on such matter.

Quorum and Required Vote

      The inspector of elections appointed for the Special Meeting will tabulate votes cast by proxy or in person at the Special Meeting. The inspector of elections will also determine whether or not a quorum is present. In order to constitute a quorum for the conduct of business at the Special Meeting, a majority of the outstanding shares of Common Stock entitled to vote at the Special Meeting must be present or represented by proxy at the Special Meeting. Shares that abstain from voting on any proposal, or that are represented by “broker non-votes,” will be treated as shares that are present and entitled to vote at the Special Meeting for purposes of determining whether a quorum exists.

      Approval of Proposal 1 requires the affirmative vote of a majority of the shares of Common Stock outstanding on the Record Date. Abstentions will have the same effect as a negative vote. The approval of Proposal 1 is a routine proposal on which the Company expects that brokers or other nominees will be entitled to vote without receiving instructions from the record holder of the applicable shares of Common Stock. Accordingly, no broker non-votes will result from this proposal.

Costs of Solicitation

      The total cost of this solicitation will be borne by the Company. In addition to solicitation by mail, officers and employees of the Company may solicit proxies by telephone, by facsimile or in person. The Company has retained Georgeson Inc. to assist in the solicitation of proxies for a fee not to exceed $9,000,

plus the reimbursement of reasonable out-of-pocket expenses. The Company will reimburse brokers, nominees, fiduciaries and other custodians for reasonable expenses incurred by them in sending proxy soliciting material to the beneficial owners of the Common Stock.

Confidentiality

      It is the Company’s policy that all proxies, ballots and voting materials that identify the particular vote of a stockholder be kept confidential, except in the following circumstances:

PROPOSAL NO. 1

APPROVAL OF AN AMENDMENT TO THE RESTATED CERTIFICATE OF INCORPORATION

      The Board has determined that it is in the Company’s best interest and in the best interest of the Company’s stockholders to further amend the Company’s Restated Certificate of Incorporation (as amended, the “Certificate of Incorporation”) to increase the total number of authorized shares of Common Stock from 300,000,000 shares to 500,000,000 shares. The Board unanimously approved the proposed amendment to the Certificate of Incorporation, in substantially the form attached hereto as Exhibit A (the “Amendment”), declared it to be advisable and hereby seeks the approval of the Amendment by the Company’s stockholders.

      If the Amendment is approved by the Company’s stockholders, the Amendment will become effective upon the filing of a certificate of amendment with the Delaware Secretary of State, which filing is expected to occur promptly after the Special Meeting.

Purpose of the Amendment

      The purpose of the Amendment is to increase the total number of authorized shares of Common Stock from 300,000,000 shares to 500,000,000 shares. The additional authorized shares could be used by the Company for business and financial purposes as determined by the Board from time to time to be necessary or desirable. Subject to favorable market conditions and approval of the Amendment, the Company currently plans to use a number of the additional shares of Common Stock to effect a stock split, in the form of a stock dividend payable on all outstanding shares of Common Stock. The Board anticipates approving a two-for-one stock split in the future, but the final decision on when or whether to implement a stock split and the magnitude of the stock split will be based on market conditions and remain in the Board’s sole discretion. The proposed increase in the number of authorized shares of Common Stock is necessary because the current number of authorized shares of Common Stock that are not reserved or outstanding is not sufficient to effect a two-for-one stock split. Stockholder approval of a stock split effected in the form of a stock dividend is not required under Delaware law, is not being solicited by this Proxy Statement and will not be solicited in the future in order to effect the stock split.

      The objective of a stock split would be to lower the market price of the Common Stock in inverse proportion to the stock split. Such lower price would be expected to increase the liquidity and broaden the marketability of the Common Stock to a larger group of investors. The Board may decide, however, in the best interests of the Company and due to market conditions or otherwise, not to effect a stock split. Therefore, no assurances can be given that the Board will effect a stock split, even if the Amendment is approved.

      If a stock split is effected, each stockholder would receive, for each share of Common Stock held by such stockholder on the record date for the stock split that would be established by the Board, a dividend of the Common Stock. For example, if the Board declares a two-for-one stock split, each stockholder would receive one additional share of Common Stock for each share held. In addition, the Company’s outstanding stock options, stock purchase rights and warrants, if any, would be proportionately adjusted such that the number of shares underlying the Company’s outstanding stock options, stock purchase rights and warrants would be increased (for example, doubled in a two-for-one stock split) and the exercise price would be reduced (for example, halved in a two-for-one stock split). In the event of a stock split, the Company will apply for listing of the additional shares of Common Stock to be issued on the New York Stock Exchange.

      As of the Record Date, there were 151,158,148 shares of Common Stock outstanding and held by the Company’s stockholders (exclusive of 2,597,796 shares of Common Stock held in treasury). In addition to these shares, as of the Record Date, there were 14,651,440 shares of Common Stock reserved for issuance under the Company’s equity compensation plans and 5,921,400 shares of Common Stock reserved for issuance upon conversion of the Company’s 1.50% Convertible Senior Notes due 2026.

      Other possible business and financial uses for the additional shares of Common Stock include, without limitation, future stock splits, raising capital through the sale of Common Stock, acquiring other companies, businesses or products in exchange for shares of Common Stock, attracting and retaining employees by the issuance of additional securities under the Company’s various equity compensation plans, and other

transactions and corporate purposes that the Board deems are in the Company’s best interest. The additional authorized shares would enable the Company to act quickly in response to opportunities that may arise for these types of transactions, in most cases without the necessity of obtaining further stockholder approval and holding a special stockholders’ meeting before such issuance(s) could proceed, except as provided under Delaware law or under the rules of the New York Stock Exchange. Other than a possible stock split and issuances pursuant to employee benefit plans and currently outstanding convertible securities and warrants, as of the date of this Proxy Statement the Company has no current plans, arrangements or understandings regarding the additional shares that would be authorized pursuant to this proposal. However, the Company reviews and evaluates potential capital raising activities, transactions and other corporate actions on an on-going basis to determine if such actions would be in the best interests of the Company and its stockholders.

Possible Effects of the Amendment

      Upon issuance, the additional shares of authorized Common Stock would have rights identical to the currently outstanding shares of Common Stock. Adoption of the Amendment would not have any immediate dilutive effect on the proportionate voting power or other rights of existing stockholders. The proposed stock split, should it be effected, would reduce the Company’s earnings per share but would not affect voting rights of current stockholders, as each stockholder would continue to hold the same percentage interest in the Company. However, to the extent that the additional authorized shares of Common Stock are issued in the future outside of the proposed stock split, they may decrease existing stockholders’ percentage equity ownership and, depending on the price at which they are issued, could be dilutive to the voting rights of existing stockholders and have a negative effect on the market price of the Common Stock. Current stockholders have no preemptive or similar rights, which means that current stockholders do not have a prior right to purchase any new issue of Common Stock in order to maintain their proportionate ownership thereof.

      The Company has not proposed the increase in the number of authorized shares of Common Stock with the intention of using the additional authorized shares for anti-takeover purposes, but the Company would be able to use the additional shares to oppose a hostile takeover attempt or delay or prevent changes in control or management of the Company. For example, without further stockholder approval, the Board could sell shares of Common Stock in a private transaction to purchasers who would oppose a takeover or favor the current Board. Although this proposal to increase the authorized number of shares of Common Stock has been prompted by business and financial considerations and not by the threat of any known or threatened hostile takeover attempt, stockholders should be aware that approval of this proposal could facilitate future efforts by the Company to oppose changes in control of the Company and perpetuate the Company’s management, including transactions in which the stockholders might otherwise receive a premium for their shares over then current market prices.

      The Company could also use the additional shares of Common Stock for potential strategic transactions including, among other things, acquisitions, spin-offs, strategic partnerships, joint ventures, restructurings, divestitures, business combinations and investments, although the Company has no present plans to do so. The Company cannot provide assurances that any such transactions will be consummated on favorable terms or at all, that they will enhance stockholder value or that they will not adversely affect the Company’s business or the trading price of the Common Stock. Any such transactions may require the Company to incur non-recurring or other charges and may pose significant integration challenges and/or management and business disruptions, any of which could materially and adversely affect the Company’s business and financial results.

Recommendation of the Board of Directors

      THE BOARD UNANIMOUSLY RECOMMENDS THAT STOCKHOLDERS VOTE FOR PROPOSAL 1.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Directors and Executive Officers

      The following table sets forth information as of August 14, 2006 regarding the beneficial ownership of Common Stock by each director, each of the executive officers named in the Summary Compensation Table in the Proxy Statement for the Company’s Annual Meeting of Stockholders held in 2006, and all of the directors and executive officers of the Company as a group.

Stockholders Holding 5% or More

      Except as set forth below, management of the Company knows of no person who is the beneficial owner of more than 5% of the Company’s issued and outstanding Common Stock.

OTHER BUSINESS

      Pursuant to Rule 14a-8 under the Securities Exchange Act of 1934, stockholders may present proper proposals for inclusion in the Company’s proxy statement and for consideration at the Company’s next annual meeting of stockholders. To be eligible for inclusion in the Company’s 2007 proxy statement, a stockholder’s proposal must be received by the Company no later than November 27, 2006 and must otherwise comply with Rule 14a-8 under the Securities Exchange Act of 1934.

      The Company’s Restated Certificate of Incorporation contains an advance notice provision with respect to matters to be brought at an annual meeting of stockholders and not included in the Company’s proxy statement. Pursuant to the Company’s Restated Certificate of Incorporation, only such business shall be conducted at an annual meeting of stockholders as is properly brought before the meeting. For business to be properly brought before an annual meeting by a stockholder, in addition to any other applicable requirements, timely notice of the matter must be first given to the Secretary of the Company. To be timely, written notice must be received by the Secretary not less than 30 days nor more than 60 days prior to the meeting. If less than 40 days’ notice or prior public disclosure of the meeting has been given to stockholders, then notice of the proposed business matter must be received by the Secretary not later than 10 days after the mailing of notice of the meeting or such public disclosure. Any notice to the Secretary must include as to each matter the stockholder proposes to bring before the meeting: (a) a brief description of the proposal desired to be brought before the meeting and the reason for conducting such business at the annual meeting; (b) the name and record address of the stockholder proposing such business or other stockholders supporting such proposal; (c) the class and number of shares of Common Stock that are beneficially owned by the stockholder on the date of such stockholder notice and by other stockholders supporting such proposal on the date of such stockholder notice; and (d) any material interest of the stockholder in such business. While the Board will consider stockholder proposals, the Company reserves the right to omit from the Company’s 2007 proxy

statement stockholder proposals that it is not required to include under the Securities Exchange Act of 1934, including Rule 14a-8 thereunder.

      The Company’s Restated Certificate of Incorporation provides that any stockholder entitled to vote for the election of directors at a meeting may nominate persons for election as directors only if timely written notice of such stockholder’s intent to make such nomination is given, either by personal delivery or United States mail, postage prepaid, to Allergan, Inc., Attn: Secretary, 2525 Dupont Drive, P.O. Box 19534, Irvine, CA 92623. To be timely, a stockholder’s notice must be delivered to, or mailed and received at, the address provided above not less than 30 days nor more than 60 days prior to the scheduled annual meeting, regardless of any postponements, deferrals or adjournments of that meeting to a later date; provided, however, that if less than 40 days’ notice or prior public disclosure of the date of the scheduled annual meeting is given or made, notice by the stockholder, to be timely, must be so delivered or received not later than the close of business on the tenth day following the earlier of the day on which such notice of the date of the scheduled annual meeting was mailed or the day on which such public disclosure was made. A stockholder’s notice to the Secretary must set forth: (a) as to each person whom the stockholder proposes to nominate for election or reelection as a director, (i) the name, age, business address and residence address of the person, (ii) the principal occupation or employment of the person, (iii) the class and number of shares of capital stock of the Company beneficially owned by the person, (iv) the consent of the proposed nominee; and (v) any other information relating to the person that is required to be disclosed in solicitations for proxies for election of directors pursuant to Rule 14a under the Securities Exchange Act of 1934; and (b) as to the stockholder giving the notice, (i) the name and address, as they appear on the Company’s books, of the stockholder and (ii) the class and number of shares of the capital stock of the Company that are beneficially owned by the stockholder on the date of such stockholder notice. The Company may require any proposed nominee to furnish such other information as may be reasonably required by the Company to determine the eligibility of such proposed nominee to serve as a director of the Company.

      In the alternative, stockholders can at any time recommend for consideration by the Corporate Governance Committee qualified candidates for the Board meeting the qualifications described in this proxy statement under the heading “Corporate Governance Committee” by submitting to the Company any recommendations for director candidates, along with appropriate biographical information, a brief description of such candidate’s qualifications and such candidate’s written consent to nomination, to the Corporate Governance Committee, c/o Allergan, Inc., Attn: Secretary, 2525 Dupont Drive, P.O. Box 19534, Irvine, CA 92623. Submissions satisfying the required qualifications will be forwarded to the Chairman of the Corporate Governance Committee or such other member of the Corporate Governance Committee delegated to review and consider candidates for director nominees.

      As of the date of this Proxy Statement, management knows of no other matters to be brought before the stockholders at the Special Meeting. Should any other matters properly come before the Special Meeting, action may be taken thereon pursuant to the proxies in the form enclosed, which confer discretionary authority on the persons named therein or their substitutes with respect to such matters.

Irvine, California

August 15, 2006

EXHIBIT A

FORM OF CERTIFICATE OF AMENDMENT OF THE RESTATED CERTIFICATE OF

INCORPORATION OF ALLERGAN, INC.

CERTIFICATE OF AMENDMENT

OF

RESTATED CERTIFICATE OF INCORPORATION

OF

ALLERGAN, INC.,

A DELAWARE CORPORATION

      Allergan, Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the “Corporation”), DOES HEREBY CERTIFY:

      1. The Board of Directors of the Corporation has duly adopted a resolution setting forth an amendment to the Corporation’s Restated Certificate of Incorporation in accordance with the provisions of Section 141 of the Delaware General Corporation Law. The resolution setting forth the amendment is as follows:

      2. This Certificate of Amendment of Restated Certificate of Incorporation was duly adopted and approved by the stockholders of the Corporation in accordance with the provisions of Section 242 of the Delaware General Corporation Law.

      IN WITNESS WHEREOF the undersigned has caused this Certificate of Amendment of Restated Certificate of Incorporation to be duly executed as of the           day of                     , 2006 and hereby affirms and acknowledges under penalty of perjury that the filing of this Certificate of Amendment of Restated Certificate of Incorporation of Allergan, Inc. is the act and deed of Allergan, Inc.

ATTEST:

Matthew J. Maletta

Vice President,

Assistant General Counsel and Assistant Secretary