NOW® Solutions Vegan Hair, Skin & Nails promotes natural beauty from inside by working at the cellular level. The amino acids and minerals in this entirely vegan mix are necessary for the synthesis of keratin and collagen, the primary structural elements of hair, skin, and nails. This formula also contains hyaluronic acid and biotin, which can support healthy, youthful skin, as well as the antioxidant vitamins C and E, which help shield skin from free radicals.