Nuveda Wellness Collagen Peptides are the perfect supplement to enhance the body’s natural ability to repair joints, tendons and muscles, and to support healthy skin, hair and nails. Collagen is the most abundant protein in the human body, comprising around a quarter of your overall protein makeup and as much as 80% of the protein in your skin alone. Not only does collagen keep skin elastic and hair strong, but it is also critical for the functionality of joints and connective tissue.