L-carnosine is a small molecule dipeptide, which widely exists in skeletal muscle, heart, brain and other nerve tissues. As one of the cosmetic peptide, L-carnosine helps to reduce the cross-linking glue that causes wrinkles and reduces skin elasticity. L-carnosine anti-aging has a obvious effect on skin was confirmed. Because L-carnosine anti-aging effect, it is widely used in cosmetics.