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. How to use Viridian Biotin 2500ug: Directions: As a food supplement, take one capsule daily with food, or as directed by your healthcare professional. Viridian Biotin 2500ug Ingredients: One capsule provides:Biotin 2500ug Ask The Pharmacy: Hair growth(part 2) Ask The Pharmacy: Effectiveness, Results & Risks (Part 4)