Dihydrotestosterone (DHT) is considered to be the essential androgenic hormone. DHT is responsible for the formation of male primary sex characteristics during embryonic life. It is responsible for the development of most secondary sex characteristics in males at puberty. And it continues to be important to male sexual function throughout adult life. A semisynthetic analog of DHT is called stanolone. Dihydrotestosterone (DHT) is a derivative or by- product of testosterone. Testosterone converts to DHT with the aid of the enzyme 5-alpha- reductase. While the entire genetic process of MPB is not completely understood, scientists do know that DHT shrinks hair follicles, and that when DHT is suppressed, hair follicles continue to thrive. Hair follicles that are sensitive to DHT must be exposed to the hormone for a prolonged period of time for the affected follicle to complete the miniaturization process. Today, with proper intervention, this process can be slowed or even stopped if caught early enough.