how long dose it take for hair to grow
Human hair growth The three stages of hair growth are the anagen, catagen, and telogen phases. Each strand of hair on the human body is at its own stage of development. Once the cycle is complete, it restarts and a new strand of hair begins to form. The rate or speed of hair growth is about 1.25 centimetres or 0.5 inches per month, or about 15 centimetres or 6 inches per year.
Hair follicle The position and distribution of hair follicles changes over the body. For example, the skin of the palms and soles do not have hair follicles whereas skin of the scalp, forearms, legs and genitalia have abundant hair follicles.[1] There are many structures that make up the hair follicle. Anatomically, the triad of hair follicle, sebaceous gland and arrector pili muscle make up the pilosebaceous unit.[1]