Many nutrients cannot be delivered to the body externally. This formula is designed to help build collagen and keratin, major building blocks of skin, nails and hair that can decrease as we age. Delivering nutrients like MSM internally may help support strong hair, hard nails and moist supple skin. This product is free of sugar and salt and is also suitable for vegetarians. Ingredients:Each two (2) tablets OF Solgar Hair, Skin and Nails Formula Tablets provide: MSM (methylsulfonylmethane) - 1000mg Vitamin C (l-ascorbic acid) - 120mg L-Lysine (l-lysine HCL) - 50mg L-Proline - 50mg Silicon (silica, L corallioides [red algae powder]) - 50mg Zinc (zinc citrate) - 15mg Copper (copper glycinate) - 2mg Other Ingredients:Vegetable powdered cellulose, vegetable stearic acid, vegetable magnesium stearate, vegetable glycerin.Directions:As a food supplement for adults, two (2) tablets daily, preferably at mealtime, or as directed by a healthcare practitioner.