Fast Dissolve Beauty Promotes Healthy Hair, Skin & Nails Natural Flavor Vegetarian Dietary SupplementNatrol Biotin 10,000 mcg Fast Dissolve: Promotes healthy 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.