Aile Shanglan Copper Peptide Freeze-dried Powder can improve rough, dry and dull skin, but it can't metabolize dull skin. Precipitation is caused by melanin precipitation in the skin, which should be improved by other methods, such as using whitening products and avoiding ultraviolet radiation. The main component of Aile Shanglan Copper Peptide Active Freeze-dried Powder is copper peptide, which can promote skin repair and regeneration, increase skin elasticity and firmness, and improve skin quality.