Raspberry ketone glucoside can Effective inhibit the formation of melanin and prohibit the activity of tyrosinase. Raspberry ketone glucoside also is nitric oxide catching agent. As you known, the free radicals of active oxygen and lipid peroxide, caused by work press and ultraviolet radiation, can arouse dermatitis and harm skin tissue heavily. At present study, it was evidence that nitric oxide caused by synthetase harm to skin and make skin rough and aged. It was also one of reasons that cause pigmentation. Raspberry ketone glucoside is a good nitric oxide catching agent, so it has aging resistance and make skin whiten and bright.