Does biotin work to grow new hair?

According to WebMD, any claims of biotin working to grow hair are not scientifically supported. Some other uses of biotin that have not been either supported or tested include treating cradle cap, hepatitis and depression.

According to WebMD, biotin is a coenzyme and a B vitamin. Biotin may also be referred to as vitamin H. This supplement promotes the health of nerves, the digestive tract, metabolism, skin and cells. Most people do not require biotin supplements, as biotin is naturally derived from foods. Biotin that is used by the body is also reused. Naturally occurring biotin deficiency is highly uncommon. The risks and benefits of taking biotin during pregnancy are uncertain.