Used as a water-soluble derivative of vitamin E, this compound functions primarily as an antioxidant in cosmetic and pharmaceutical formulations. It helps protect formulations from oxidative degradation, extending shelf life. Due to its enhanced solubility and skin penetration properties, it is commonly used in topical products such as creams, lotions, and serums to deliver antioxidant benefits, improve skin hydration, and reduce signs of aging. It is also employed in drug delivery systems to improve the bioavailability of poorly water-soluble drugs.