Beautiful hair, skin and nails are just the beginning when it comes to the many benefits of biotin. Biotin from Prairie Naturals is a high potency, non-toxic supplement containing 5000 mcg of biotin per vegetable capsule. Improves keratin protein infrastructure of hair, skin, nails and bones; treats hair loss and stimulates healthy hair re-growth; promotes strong nail growth; supports skin health. Biotin is the ultimate support nutrient for the maintenance of healthy strong hair, skin and nails. Best known for minimizing splitting and brittle nails and encouraging thick, strong hair.