Tea polyphenols are extracted from tea and are a general term for polyphenols in tea. Active substances such as tea polyphenols have detoxification and anti-radiation effects. It is also a new type of natural antioxidant. It has strong anti-oxidation effect at normal temperature and low concentration, inhibits collagenase and elastase, and prevents elasticity. The protein content is reduced or denatured, maintaining skin elasticity and achieving anti-wrinkle effect.

In addition, tea polyphenols are water-soluble substances, which have the functions of disinfection, sterilization, anti-aging of skin, and reduction of ultraviolet radiation in the sun to damage the skin. Most of the current sunscreens are oil-soluble compounds, some of which are locally irritating to the skin, so tea polyphenols, which are water-soluble sunscreens with UV absorption, are important. Tea polyphenols can block UV rays and remove them. Ultraviolet-induced free radicals, which reduce the production of melanin, inhibit the activity of tyrosinase and catalase, thereby achieving whitening effect.