Does biotin make your hair grow? Biotin, also known as vitamin B7, stimulates keratin production in hair and can increase the rate of follicle growth.
How much biotin should I take for hair growth? 2-5 milligrams
How long after taking biotin will I see hair growth? It takes months to see results on biotin. According to The Journal of Clinical and Aesthetic Dermatology (source), biotin takes around 90 days to begin to work. Contrary to some of the claims you may have heard, biotin is not an overnight remedy that will magically give you 5 inches of hair growth in 24 hours.