Yes, the principle of whitening is as follows: the rubbing matcha mask contains Ginkgo biloba extract, which is rich in flavonoids. Flavonoids contained in Ginkgo biloba leaves can hinder the formation and deposition of pigments in the dermis, thus achieving the effects of whitening skin and preventing pigmentation. Zinc, manganese, molybdenum and other trace elements in Ginkgo biloba leaves can scavenge oxygen free radicals and inhibit the growth of melanin in addition to flavonoids.