Quercetin is a flavonoid found in a variety of plants and foods from grapes to oak trees. It is an effective anti-inflammatory, soothing redness and irritation. It has also shown antioxidant properties, making it a good ingredient in anti-aging skin care thanks to its ability to neutralise free radicals.
Recently, it has also been proven to help rejuvenate dying cells and promote new cell growth which helps to diminish fine lines and wrinkles. As it is gentle, it is safe to use on acne-prone and sensitive skins and can be found in day creams, serums and primers.