Chestnuts are the fruit of the chestnut tree, Castanea sativa, and are eaten in autumn in a variety of ways. Rich in vitamins and minerals, this sweet-flavoured nut contains several compounds with antioxidant properties that have many benefits for the skin. In beauty products, the chestnut's flavonoid and tannin content provide toning and astringent properties, promoting refreshed and toned skin.

Antioxidant compounds such as rutin and quercitrin help prevent oxidative damage and, consequently, slow down the skin's ageing process.