Biotin is a B vitamin that uniquely supports healthy hair, skin and nails.Biotin is used at a daily amount of 2500ug, making this an effective one-a-day supplement for inside out beauty and health. IngredientsOne capsule provides:Ingredient Weight %EC NRVBiotin 2500ug 5000in a base of alfalfa, spirulina and bilberry Directions For UseAs a food supplement, take one capsule daily with food, or as directed by your healthcare professional.