Collagen loss will cause skin aging, pigmentation, dullness and wrinkles. There are several ways to supplement collagen: 1. Apply human-like collagen, which can accelerate the penetration of skin collagen components during daily skin care and enhance skin elasticity from the outside; 2. Eat more collagen-rich foods in normal food, such as silver fungus, pig skin, deep-sea fish and bean food; 3, It is mainly used to fill deep wrinkles, skin damage caused by defects and repair facial defects; 4, oral small molecule collagen peptide is the most effective and mature way to supplement collagen, but we should pay attention to the oral must be pure natural, non-additive small molecule collagen peptide, in order to really achieve the role of repairing skin and rebuilding collagen layer.