Will my hair grow if I take biotin? 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.
How much biotin should I take for hair growth? 2-5 milligrams
How long does it take biotin to work on hair? After starting a biotin supplement routine, you can expect to start seeing a difference in about three to four months. Results may vary depending on the amount and type of biotin you’re taking. You can find biotin at most drug stores and in any vitamin shop.