Any vitamin deficiency will cause hair loss. All the vitamins are important — B, C, E,” but that doesn’t mean that you need to buy special supplements for your hair. The best source for the nutrients you need is a balanced diet. Getting your vitamins through your diet is easier for the body to break down and absorb.
Today women swear by biotin and zinc for hair growth. It’s very hard for a person with an average American diet to become deficient in bioton and zinc. And there hasn’t been any good evidence that taking zinc or biotin supplements actually offers any benefits for hair. Extra biotin probably won’t hurt, but it’s not clear it does much good.