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Results: increased flirtatious behavior and self-reported attraction

Posted on November 22, 2010 by jim.

From 2007 to 2009 we presented results five times during four different scientific assemblies (listed below).  We showed that a chemical mixture of androstenol and androsterone increases flirtatious behavior in women within 15 minutes of exposure. These women also reported that for some unknown reason they were significantly more attracted to the man wearing the mixture. This same mixture is used in the Scent of Eros product for men. If our study results are independently replicated, they will be published – if not before. However, given the bastardization of Kohl’s accurate conceptualization of human pheromones (see his book and journal publications, also listed below), research without publication may continue to be its own reward. From a scientist’s perspective, it makes no sense for researchers to attempt to compete with marketers who are convincing people to buy products that claim to elicit aphrodisiac-like affects on the behavior of the opposite sex. Human pheromone products enhance the appeal of the person wearing them, as you can read in the many unsolicited testimonies you can find in a search for “Scent of Eros.” But there’s no magical aphrodisiac involved; it’s just “chemistry”.


Kelahan, L.C., Hoffmann, H, & Kohl, J.V. (2007). Androstenol/androsterone may condition a human hormonal effect/behavioral affect. Association for Chemoreception Sciences 29th Annual Meeting,. Sarasota, Florida,.

Kelahan, L.C., Hoffmann, H, & Kohl, J.V.  (2007). Androstenol/androsterone may condition a human hormonal effect/behavioral affect. Society for the Scientific Study of Sexuality 50th Anniversary Annual Meeting. Indianapolic, Indiana.

Kelahan, L.C., Hoffmann, H, & Kohl, J.V.  (2008). Olfactory/pheromonal input and human female proceptive sexual behaviors/preferences. Society for Neuroscience. Washington, D.C.

Kohl, J.V., Kelahan, L.C. & Hoffmann, H.. (2009). Putative Human Pheromones Increase Women’s Observed Flirtatious Behaviors and Ratings of Attraction. Association for Chemoreception Sciences 31st Annual Meeting,. Sarasota, Florida.

Kohl, J.V., Kelahan, L.C. & Hoffmann, H.. (2009) . Human pheromones increase women’s observed flirtatious behaviors and ratings of attraction. 13th Annual Meeting of the Society for Behavioral Neuroendocrinology. East Lansing, Michigan.


Kohl, J.V. (2007). “Archives of Sexology: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences.” free author’s copy of Journal of Psychology & Human Sexuality 18(4): 313-369.

Kohl, J.V., et al. (2001). “Human pheromones: integrating neuroendocrinology and ethology.” free full text of Neuro Endocrinol Lett. 22(5): 309-21.

Diamond, M., Binstock , T. &  Kohl , JV. (1996). abstract “From fertilization to adult sexual behavior.Horm Behav. 30(4): 333-53.



Retired medical laboratory scientist

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James Kohl owns, and he has published books and award-winning research journal articles about human pheromones. With colleagues he was the first to show that a mixture of human pheromones increases the flirtatious behaviors of women, and increases their level of attraction to the man wearing the mixture - during a real-life social circumstance lasting 15 minutes.

James Kohl was not paid for his endorsement. Nevertheless, he is an affiliate of which means it is possible for him to receive a monetary gain from the sale of LuvEssentials products based on how the visitor arrived at our site.

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What is the vomeronasal organ (VNO)?

The vomeronasal organ (VNO) is a cone-shaped organ in the nasal cavity, which is believed to be one of the body's receptors of pheromones. More, specifically, the VNO, which is part of the accessory olfactory system in the nose, does not respond to normal scents, but may detect odorless, barely perceptible pheromones.

Other schools of thought believe that it is not the VNO but rather cells in our main olfactory system and their affects on hormones secreted by the hypothalamus that are responsible for the affects of pheromones.

Learn more about the science behind pheromones here.

What are optimized pheromones?

Optimized pheromones are lab-certified pheromone formulations that have the optimum concentration of biologically active pheromones scientifically proven to produce behavior-altering results -- particularly as sexual attractants. Optimized pheromone formulations do not necessarily contain the maximum level of pheromones available on the market, but rather contain the greatest degree (and combination)of human pheromones that trigger a conditioned biological response in humans that, in turn, dictate their sexual behavior. Optimized pheromones also release neurotransmitters that directly modify the behavior of the opposite sex, such as triggering sexual excitement. For example:

Optimized pheromones for men are scientifically proven to bring about an increase in the luteinizing hormone (LH) in women, thereby causing a woman to have a heightened sexual responsiveness to a man. This LH surge elevates a woman's predisposition towards sexual activity.

Optimized pheromones for women are scientifically proven to bring about a biochemical surge in men, thereby causing a man to have a heightened sexual responsiveness to a woman. This biochemical surge is what makes a man fiercely determined to copulate.