Collagen is the most abundant protein in your body. It has many important functions, including providing your skin with structure and strengthening your bones. Here are 3 science-backed health benefits of taking collagen supplements. Improves Skin Health. Collagen is a major component of your skin, and it plays a role in strengthening skin, as well as in elasticity and hydration. As you age, your body produces less collagen, leading to dry skin and the formation of wrinkles. However, several studies have shown that collagen supplements help slow the aging of your skin by reducing wrinkles and dryness. Boosts Muscle Mass. As the most abundant protein in the body, collagen is an important component of skeletal muscle. Researchers suggest that collagen may promote the synthesis of muscle proteins and stimulate muscle growth after exercise. Promotes Heart Health. Collagen provides structure to your arteries, the blood vessels that carry blood from your heart to the rest of your body. Without enough collagen, arteries may become less flexible and elastic, which can lead to heart attack and stroke.