The Science Behind Pheromones: Published Research
Human pheromone science is an active area of peer-reviewed research. Below are key published studies demonstrating the measurable effects of pheromone compounds like androstadienone (A1) and androstenone on human mood, behavior, and social interaction.
Androstadienone Enhances Perceived Male Attractiveness
A study by Saxton et al. (2008) conducted at speed-dating events found that women exposed to androstadienone rated men as significantly more attractive compared to control groups. The effect was replicated across multiple experiments, providing evidence that this chemical signal modulates real-world attractiveness judgments.
Citation: Saxton, T.K., Lyndon, A., Little, A.C., & Roberts, S.C. (2008). "Evidence that androstadienone, a putative human chemosignal, modulates women's attributions of men's attractiveness." Hormones and Behavior, 54(5), 597-601. DOI: 10.1016/j.yhbeh.2008.06.001 | PubMed
Pheromones Improve Mood and Reduce Anxiety
Grosser et al. (2000) demonstrated that androstadienone administration significantly reduced nervousness, tension, and other negative mood states in subjects, with corresponding changes in autonomic nervous system activity. Upper-lip application of androstadienone in women resulted in improved mood and heightened focus, particularly for processing emotional information.
Citation: Grosser, B.I., Monti-Bloch, L., Jennings-White, C., & Berliner, D.L. (2000). "Behavioral and electrophysiological effects of androstadienone, a human chemosignal." Psychoneuroendocrinology, 25(3), 289-299. DOI: 10.1016/S0306-4530(99)00056-6 | PubMed
Androstadienone Increases Cooperation Between Men
In a double-blind, placebo-controlled experiment with forty male subjects, Huoviala & Rantala (2013) found that androstadienone increased cooperative behavior in economic decision-making tasks. This was the first study to demonstrate that androstadienone directly affects behavior in human males, not just women.
Citation: Huoviala, P. & Rantala, M.J. (2013). "A Putative Human Pheromone, Androstadienone, Increases Cooperation between Men." PLOS ONE, 8(5), e62499. DOI: 10.1371/journal.pone.0062499 | PMC Full Text
Androstadienone Makes Women More Generous
Graffeo et al. (2016) found that exposure to androstadienone significantly improved mood in female participants and was strongly correlated with increased altruistic behavior (larger charitable donations), suggesting pheromones influence prosocial decision-making through emotional pathways.
Citation: Graffeo, M., Ritov, I., & Bonini, N. (2016). "The Putative Chemosignal Androstadienone Makes Women More Generous." Journal of Neuroscience, Psychology, and Economics, 9(2), 88-99. DOI: 10.1037/npe0000055 | PMC Full Text
Pheromone Sensitivity Linked to Social and Sexual Behavior
A 2023 study published in PLOS ONE found that individuals with greater sensitivity to androstadienone reported richer social lives (more friends, more social events, more frequent communication) and more active sexual behavior. General olfactory function did not explain these associations, supporting a specialized social-emotional function for this pheromone compound.
Citation: Hornung, J., Chopra, A., Engert, V., & Bhatt, P. (2023). "Androstadienone sensitivity is associated with attention to emotions, social interactions, and sexual behavior in older U.S. adults." PLOS ONE, 18(1), e0280082. DOI: 10.1371/journal.pone.0280082 | Full Text
Androstadienone Activates Brain Regions for Social Cognition
Brain imaging research by Savic et al. (2001) revealed sex-specific neural responses to androstadienone: it activates the hypothalamus in women but not in heterosexual men, demonstrating that human pheromone compounds engage the same brain regions involved in hormonal regulation and mate selection.
Citation: Savic, I., Berglund, H., Gulyas, B., & Roland, P. (2001). "Smelling of odorous sex hormone-like compounds causes sex-differentiated hypothalamic activations in humans." Neuron, 31(4), 661-668. DOI: 10.1016/S0896-6273(01)00390-7 | PubMed
Note: While the scientific community continues to study the full scope of human pheromone effects, the research above demonstrates measurable, reproducible impacts on mood, social behavior, attractiveness perception, and neural activation. Royal Pheromones products contain these same compound families, formulated for practical daily use.