Beauty Promotes Healthy, Hair , Skin & Nails Helps Convert Food Into Energy Natural Flavor Maximum Strength Value Size Vegetarian Dietary Supplement Natrol Biotin 10,000 mcg Fast Dissolve: Promotes health hair, radiant skin and stronger nails. Helps support energy metabolism and aids in the conversion of food into energy. Fast dissolve form - take anytime, anywhere, no water needed. Clinical studies have shown that those deficient in Biotin can experience hair loss and brittle nails.