Erogen (from the Greek ἔρως, eros —”desire”, ) subtle micro-species living on human skin. Erogens evoke the sexual excitement. Excessive population may lead to hypererogenism and cause nimphomania or uncontrolled paroxisms of desire. Erogens take many forms and shapes, still just few of them have been investigated and extracted. Characteristic scent produced by erogens is known as pheromone. It has been proved, that dominant population of selected erogen type influences the quality of pheromone.
On the picture you can see Erogen 01 known as Frivolous. Erogen 01 has been observed both on male and female skin.