NOW Solutions Glutathione Skin Brightener is a combination of two clinically validated ingredients that nourish from within to give skin a healthy glow. First, glutathione helps to maintain normal expression of skin pigments which can result in a bright and even skin tone and helps to maintain skin's natural moisture content and elasticity. This product also features Ceramosides, a plant extract highly concentrated in phytoceramides, which has been shown to moisturize skin from within and to maintain youthful skin appearance.