CERTIFICATE OF AMENDMENT
                                       OF
                            ARTICLES OF INCORPORATION
                                       OF
                                EROX CORPORATION


         William P. Horgan and Julian N. Stern hereby certify that:

         1. They are the Chief Executive Officer and Secretary, respectively, of
EROX Corporation, a California corporation (the "Corporation").

         2. Article I. of the Articles of  Incorporation  of the  Corporation is
hereby amended in full to read as follows:

                  "Article  I.  Name.  The  name of this  corporation  is  Human
Pheromone Sciences, Inc."

         3. The foregoing  amendment of Articles of Incorporation  has been duly
approved by the Corporation's Board of Directors.

         4. The foregoing  amendment of Articles of Incorporation  has been duly
approved by the required vote of  shareholders in accordance with Section 902 of
the Corporations Code. The total number of outstanding shares of the Corporation
is 10,289,488  shares of Common Stock and 1,433,333  shares of Preferred  Stock.
The number of shares  voting in favor of the  amendment  equaled or exceeded the
vote required. The percentage vote required was more than 50% of the outstanding
shares.

         We further declare under penalty of perjury under the laws of the State
of  California  that the  matters  set  forth in this  certificate  are true and
correct of our own knowledge.


Date:  May 29, 1998

                                    /s/ William P. Horgan                      
                                    --------------------------------------------
                                    William P. Horgan, Chief Executive Officer


                                   /s/ Julian N. Stern                        
                                    --------------------------------------------
                                   Julian N. Stern, Secretary