The hair growth cycle consists of three stages: anagen (the growth period), catagen (the transition period) and telogen (the ...

Though commonly called a “hair follicle test,” this drug test only tests clipped strands of hair, not the follicle located under the scalp. During this test, a small amount of hair is removed ...

If you got a dollar for every time a celebrity promoted hair supplements, you’d be rich! But do hair vitamins work? Are they ...