Vitamin c  30% silicone suspension. In its pure form as l-ascorbic acid, vitamin c is a powerful antioxidant that has been shown to visibly brighten skin and reduce the signs of aging when applied topically. This water-free formula provides the skin with a very high concentration (30%) of pure l-ascorbic acid and is completely stable due to the absence of water. The addition of very light silicone makes this formula feel incredibly smooth on the skin, but it may be harsh for the first week or two of use until your skin can tolerate the  high concentrations of vitamin c ( however, a non-irritating sensation is expected. Improved (if desired,