Biotin is a vitamin that contributes to healthy hair growth. It is believed that biotin improves the protein, keratin, that makes up the hair, skin and nails.
Biotin is a type of vitamin B complex that is found in food including nuts, egg yolks, fish, bread, pork and cauliflower. Biotin isn’t produced by your body or stored in your body for long either, so Biotin deficiency isn’t uncommon. A deficiency can cause brittle hair and hair loss.