How does a 22year old male grow hair?

Answer 1

the same way anyone else grows hair.

However if you mean how does a bald 22 year old regrow hair that he has lost then there is no proven hair restoration method other than those implants or weaves which, lets face it, look rubbish

Male pattern baldness is the most common form of hair loss in men. this usually involves hair loss from a bald spot and thi8nning at the temples

2 in three men in the UK will be affected by male pattern baldness at some point in their life. The highest rates are found among Caucasians, followed by Afro-Caribbeans. Chinese and Japanese men have the lowest rates. For some unknown reason, this form of hair loss is does not occur among Native Americans.

Male pattern baldness is genetic - if your grandfather, father or brothers went bald early, the chances are that you will too. The strongest influence is on the mother's side: if your maternal grandfather went bald, that's probably a better indicator that you will too than if your father's father lost his hair. There is a suggestion that bald men are more virile because they have more of the male sex hormone testosterone. While this is true and testosterone does have an effect on baldness is complicated and not completely understood.

Testosterone is naturally converted in the body to a related sex hormone, dihydrotestosterone (DHT). This stimulates the growth of facial and body hair, as well as acting on the prostate gland. There is good evidence that male pattern baldness results from an over-sensitivity of scalp hair follicles to DHT, rather than raised levels of either sex hormone in the blood.