Also known as Green Tea, this herb extract is rich in polyphenols. The infusion and decoction of green tea for drinking goes back to China in 2737 B.C. It is documented Turkish traders introduced tea to the western world in sixth century.
Green tea contains flavanols such as catechins, flavonol glycosides such as kaempferol, quercetin and kaempferol that account to its health benefits. For example, Epigallocatechin-3-gallate is the major polyphenol in green tea that shows potent anti-tumor effects.
- Reduce erythema following UV exposure
- Reduce lipid peroxidation
- Photoprotective against UVB damage
- Inhibit collagenase, the enzyme that degrades collagen
Arct, Jacek, and Katarzyna Pytkowska. "Flavonoids as components of biologically active cosmeceuticals." Clinics in dermatology 26.4 (2008): 347-357.
Fang, Evandro Fei, and Tzi Bun Ng, eds. Antitumor potential and other emerging medicinal properties of natural compounds. Heidelberg, Germany: springer, 2013.
Koch, Wojciech, et al. "Applications of tea (Camellia sinensis) and its active constituents in cosmetics." Molecules 24.23 (2019): 4277.
Saeed, Muhammad, et al. "Green tea (Camellia sinensis) and l-theanine: Medicinal values and beneficial applications in humans—A comprehensive review." Biomedicine & Pharmacotherapy 95 (2017): 1260-1275.