Exhibit 10.28



CERTIFICATION  PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the Quarterly Report of Human Pheromone  Sciences,  Inc. (the
"Company") on Form 10-QSB for the period ending September 30, 2002 as filed with
the Securities and Exchange  Commission on the date hereof (the  "Report"),  we,
William P.  Horgan.  Chief  Executive  Officer  of the  Company  and  Gregory S.
Fredrick, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C.
Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley  Act of
2002, that:

         (1)      The Report fully  complies  with the  requirements  of section
                  13(a) or 15(d) of the Securities Exchange Act of 1394; and

         (2)      The information  contained in the Report fairly  presents,  in
                  all material respects,  the financial condition and results of
                  operations of the Company.



/s/ William P. Horgan
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November 14, 2002
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/s/ Gregory S. Fredrick
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November 14, 2002
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