Since 1947 Non GMO Gluten, Wheat & Dairy Free Suitable for Vegans M Halal Kosher Parve Dietary Supplement OptiMSMMany nutrients cannot be delivered to the body externally. This formula is designed to help support collagen, a major component of skin, nails and hair that can decrease as we age. Delivering nutrients like Vitamin C and Copper internally may help support hair, nail and skin health.