HAIR IS DEAD! That is a fact, any products which act on the hair are purely cosmetic, it is the roots (follicles) of hair and the scalp tissue we are mainly concerned with. Most parts of our bodies need a good blood supply to remain healthy and hair follicles are no different. Scientists have discovered that a substance called dihydrotestosterone (DHT) adversely affected the blood supply and clogged the follicles of the hair causing the gradual miniaturisation of the follicle and hair shaft. It does this by restricting the flow of blood, interrupting the nutrient pathway to the developing hair root. DHT is the tool that your genes use to make you lose your hair.