How much biotin should you take for hair growth? 2-5 milligrams
Can I apply biotin directly to my hair? When applied topically, the formula is able to be directly supplied to your hair roots and doesn’t have to make the journey from your internal system to the scalp. So, if you do not wish to consume oral supplements, liquid biotin can be applied topically for similar results.
Can hair grow back with 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.