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                                                                    EXHIBIT 23.6



                     CONSENT OF MARVIN E. ROSENTHALE, PH.D.

                                                                 January 9, 1998

Allergan Specialty Therapeutics, Inc.
2525 Dupont Drive
Irvine, CA  92612

Ladies and Gentlemen:

I hereby consent to being named as expected to become a director of Allergan
Specialty Therapeutics, Inc. (the "Company") in the Registration Statement on
Form S-1, File No. 333-40503, filed by the Company with the Securities and
Exchange Commission.

                                        Sincerely,


                                        /s/ Marvin E. Rosenthale
                                        -----------------------------------
                                        Marvin E. Rosenthale, Ph.D.