Resveratrol is a polyphenolic compound mainly extracted from the rhizome extract of Polygonum cuspidatum Sieb. et Zucc. Polygonum cuspidatum is used in traditional Chinese and Japanese medicine to treat a variety of ailments, including fungal infections, various skin inflammations, cardiovascular disease, and liver disease. Resveratrol is an active ingredient extracted from Giant Knotweed Extract, which can inhibit the activity of melanocytes and tyrosinase, thereby reducing the formation of melanin and achieving a whitening effect. In addition, it also has a certain photoprotective effect, which can resist the damage of ultraviolet rays to human skin.

As one of the leading giant knotweed extract manufacturers and suppliers in China, we warmly welcome you to wholesale bulk giant knotweed extract in stock here from our factory. All products are with high quality and competitive price. For pricelist and quotation, contact us now.