Does biotin make you grow hair all over? The bottom line. There’s no strong evidence to support using biotin for hair growth or to prevent hair loss in people without a deficiency. Because hair thinning and poor hair growth are sometimes associated with a biotin deficiency, correcting a deficiency can help restore hair growth in some people.
Does biotin make pubic hair grow? If you’re losing pubic hair because of a biotin deficiency, then biotin supplements may help with hair re-growth.