Discover Allies of Skin 20% Vitamin C Brighten + Firm Serum, a next-generation 20% Vitamin C serum, supercharged with Orange Extract Complex, an Antioxidant Complex of Glutathione and 3 Antioxidants for intense brightening, firming and antioxidant protection. This next-generation daily serum harnesses the cumulative effect of 20% Vitamin C with Orange Extract Complex to create an indispensable treatment for all skin types. It forms a protective shield against daily external aggressors and pollutants while paving the way for brighter, firmer skin. This antioxidant-rich formula promotes radiance - enhancing elasticity and fading dullness. Over time, skin glows with a brilliant smoothness. What makes it special? Most Vitamin C serums on the market today are formulated with water. However, since Vitamin C has a very strong ability to bind to free radicals of oxygen like the ones found in water (Water = H2O with 2 Hydrogen and 1 Oxygen molecule), as soon as it's dissolved in water, it start