Improve the health of your nails, skin, and hair with 5 clinically-proven ingredients. Ingredients include: 5000mcg Biotin - Promotes Cell Growth and Aids in Building Amino Acids that are necessary for nail growth. 1500 mcg Vitamin A - Important in the production of keratin, which is the building block of healthy nails and skin. 80mg Vitamin C - Necessary for nail strength and collagen formation. 10mg Iron - Helps to carry oxygen through your red blood cells to your nails which is necessary for healthy nail formation. 10mg Zinc - Inadequate levels of Zinc can cause a breakdown in the nail plate.