NOW Foods, BiotinDescription Promote healthy hair, skin, and nails with NOW Foods Biotin, a beauty boosting vitamin. NOW Foods Biotin is a non GMO, vegetarian vegan, and kosher dietary supplement that supports energy production, amino acid metabolism, and normal immune function. This water soluble vitamin is necessary for normal growth and body function, enhances protein synthesis, and plays a critical role in skin health. Supports energy production, amino acid