Antioxidant Properties Super Concentrated With Oat Beta Glucan, Alpha Lipoic Acid, Vitamin C Ester, Tocotrienols & DMAE Where Science Works Naturally Paraben Free NutriBiotic Skin Serum is a highly concentrated blend of nutrients, including oat beta glucan and ingredients with antioxidant properties, that work together to moisturize and support the health of your skin.