Also known as the Horse Chestnut, or as we call it, the conker! In Skincare, Horse Chestnut is soothing, conditioning and toning, and has been compared to Vitamin E in its ability to provide antioxidant benefits to the skin. It also contains a family of compounds called aescin, made from the glycosides of saponins. Aescin is known to help prevent the breakdown of hyaluronic acid in the skin.