Have great looking, strong hair and nails with Wilson Universal Biotin. Biotin is a water-soluble vitamin B and a coenzyme supplement, which means the body will not store it. In supplement form, Biotin has been used to aid in the health of skin and nails while aiding in the formation of fatty acids and glucose, which help to sustain the body. Biotin also helps the metabolization of unnecessary carbohydrates and amino acids.*