Bifidus Prebiotic 10%: Helps provide a favorable environment for good bacteria that is present on the skin's surface. Hyaluronic Acid: Capable of holding large amounts of moisture. Vitamin C: An antioxidant known to help neutralize free radicals, visibly brighten, and smooth the skin. This formula uses Vitamin Cg, a water-soluble, stable vitamin C derivative that is known to be gentle on the skin and that will not degrade when exposed to air, heat, or light. Ceramides: One of the prominent li.