Procysteine is one of the amino acids that make up proteins and is involved in skin metabolism and liver detoxification. When taken together with vitamin C, it can inhibit melanin production Other functions:

①Promote skin metabolism and help it regenerate into new cells
②Promote the discharge of pigmentation such as spots, dullness, and acne marks to achieve whitening effect
③It has the effect of anti-oxidation and generating collagen fibers in the body, which helps to improve skin elasticity and prevent aging
④ Anti-allergic, commonly used in the treatment of eczema, urticaria, drug eruption and other diseases