According to the free radical theory of aging, aging is the result of the imbalance between the state of free radical production and scavenging. Reducing the production of free radicals or scavenging existing ones will effectively slow down skin aging and wrinkles. Tea polyphenols in tea is a natural antioxidant with strong antioxidant capacity, and its ability to scavenge free radicals exceeds that of vitamin C and vitamin E. Therefore, tea can effectively prevent and relieve skin aging.