Glutathione directly inhibits tyrosinase activity, while sweeping away a large number of oxidative free radicals and preventing free radicals from activating tyrosinase. It also hydrolyzes to cysteine and interferes with melanin synthesis. That is to say, in the process of whitening, it has the dual functions of “antioxidation” and “inhibition”. In addition, glutathione is a small molecular peptide with a molecular weight of 307 Daltons (molecules larger than 500 Dalton cannot cross the skin barrier). This means that glutathione applied to the skin can be absorbed by the skin. Moreover, it is also an antioxidant component in human cells. It is "friendly" to the human body, and it is easier to "cheat" the defensive layer, making it easier to enter the human body and safer.
Experiments have shown that as people age, especially after the age of 40, the loss of glutathione
will increase, so people will gradually become old.
In developed countries such as Europe and the United States, it is very popular to delay aging by eating glutathione health supplements or using glutathione-containing cosmetics.