Hair is formed when the cells of these follicles make protein, dehydrate, die, become packed together and are pushed upward.
Hair lives and grows only at the follicle, where the hair is fed by the blood stream.
The human scalp contains about 100,000 hairs as the growth of new ones pushes them out of their follicles. It is important to remember that since the hair follicles are destroyed in cases such as these, baldness considered to be permanent and incurable. Its genetic causes are not known, but there is usually a strong history of this type of baldness in the families of men who are affected by it early in life. This type of baldness is evidenced by a gradual loss of hair over a period of years. Usually, the hair loss occurs as a gradually receding hairline which becomes more severe until the front and top of the head are left bald, with hair relatively thick around the sides and back of the head.