Human Pheromone Sciences, Inc. Conducting Human Studies on Naturally-Occurring Compound (The first of several compounds that have been reproduced and show activation of the emotional centers in humans) SAN JOSE, Calif., March 2 /PRNewswire-FirstCall/ -- Human Pheromone Sciences, Inc. (EROX; "the Company") announced today that a naturally- occurring compound that has been under development for several years has, in studies in human volunteers, shown to enhance mood and create a more positive attitude in both men and women. Based upon these preliminary results, the Company has expanded its study to include a larger number of both men and women in its laboratories to validate the efficacy found in this initial trial. "The Company's research and development efforts have been focused on isolating, identifying and reproducing naturally-occurring compounds that appear to have mood-enhancing qualities. Millions of dollars have been spent on basic research. Because of this program, we now believe that we are ready to enter human clinical trials with several of these compounds, based upon the positive results of the first of these naturally-occurring substances," a Company spokesman indicated. "After years of research on this initial compound, we feel confident that it warrants an expanded study, one that will take less than six months to conduct because of the extensive work that has been undertaken in the past. In addition, the identification and reproduction of these other compounds may result in additional discoveries and advances in mood enhancement and well- being in the months and years to come," said the Company's CEO, William P. Horgan. Human Pheromone Sciences, Inc. is a technology-based company, whose proof- of concept products included prestige-priced fragrances and toiletries and environmental products sold under the REALM(R), innerREALM(R), EROX(R) and Natural Attraction(R) trademarks. These products contain synthesized human pheromones covered under U.S. and foreign patents. Scientific and consumer studies have shown that the Company's human pheromones positively impact on the moods, attitudes and emotions of wearers. Further information is available on line at http://www.erox.com/. The statements in this news release may contain forward-looking statements that involve risks and uncertainties that could cause results to differ from predicted results. Further information on factors that could affect the Company's results is detailed in the Company's annual report to shareholders on Form 10-KSB for the year ended December 31, 2003 AND Form 10-QSB for the nine months ended September 30. 2004 as filed with the Securities and Exchange Commission. The Company undertakes no obligation to publicly release the result of any revisions to these forward-looking statements. DATASOURCE: Human Pheromone Sciences, Inc. CONTACT: William P. Horgan, Chairman, CEO, or Greg Fredrick, CFO, both of Human Pheromone Sciences, Inc., +1-408-938-3030 Web site: http://www.erox.com/

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