Eternal Youth soft collagen bites, are perfect for people who like their collagen food supplement to have a great taste and be convenient to use. Collagen is an important structural component in our skin, bones, muscles, joints, hair and nails. Biotin contributes to the maintenance of skin and hair. Vitamin C contributes to normal collagen formation for the normal function of skin. Vitamin E and Vitamin C contribute to the protection of cells from oxidative stress.