Sexual pheromones are secreted hormonal substances which travel out of the body to influence the behavior of a potential mate. Animals sense pheromones through the sense of smell. There is a tiny area in the nose of reptiles and mammals, called the vomeronasal organ. Humans have this organ, but do not perceive the attraction process through noticeable scents.
Some sexual pheromone colognes promise a higher "hook up" rate for those seeking romance. However, scientists disagree about the effectiveness of synthetic sexual pheromones. In a 1998 study published in "Archives of Sexual Behavior", 38 men wore synthetic male sexual pheromones. The control group wore a placebo and were told they were pheromones. The men with the real pheromones were more likely to get lucky than the control group. This study at least shows a likely correlation between synthetic sexual pheromones and romantic success in men without revealing the how and why.
Neuroscientist Charles Wysocki of Monell Chemical Senses Center in Philadelphia wonders whether human sex pheromones even exist. He says that scientists isolate chemical compounds and call them sex pheromones without knowing exactly what they do. This brings up the question of what exactly those synthetic compounds in the colognes actually are.
Are women really going to be more attracted to a man who wears sexual pheromone colognes? If you're looking to get a date with synthetic sexual pheromones, then the science can be rather confusing. There is really no scientific consensus to speak of. You'll probably just need to depend on product reviews and feedback.