Pubic hair Signals reproductive ability Pubic hair appears at puberty. Itβs an obvious physical sign of sexual maturity β and consequently, oneβs ability to reproduce. It serves as a visual cue for prospective mates... Pheromone transmission pubic hair is involved in transmission of pheromones, or scent-carrying chemical secretions that affect mood and behavior. We still donβt know exactly how pheromones influence sexuality. Pheromones are secreted from apocrine sweat glands. Compared to other areas of the body, the pubic region has a lot of these glands. Therefore, pubic hair traps pheromones, increasing how attractive we appear to potential sex partners.