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                                                                   EXHIBIT 23.2


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

        We consent to the incorporation by reference in the Registration
Statement (Form S-8) pertaining to the 1985 Employee Stock Purchase Plan of
Collagen Corporation, of our report dated August 1, 1997, with respect to the
consolidated financial statements and schedule of Collagen Corporation included
in its Annual Report (Form 10-K) for the year ended June 30, 1997, filed with 
the Securities and Exchange Commission.


                                                 ERNST & YOUNG LLP

Palo Alto, California
December 23, 1997