Although a very common and extremely benign condition, balding can have a major psycho-social impact. AGA involves both genetic and hormonal factors Genetics determines both the density and the location of androgen sensitive hair follicles on site-specific areas of the scalp. Post puberty, a series of events triggered by androgens (mainly DHT) within these genetically programmed hair follicles transform terminal (thick) hair to miniaturized follicles (vellus hair).