Hair lifecycle and structure. What is hair made of?
Hair is composed of strong structural protein called keratin. This is the same kind of protein that makes up the nails and the outer layer of skin. Androgens regulate hairgrowth and in scalp hair Androgens may cause the hair follicle to get progressively smaller and the hairs to become finer in individuals who are genetically predisposed to this type of hair loss Click here to read the full article