What it is: A hydrating moisturizer that infuses skin with high-potency, advanced vitamin C (THD ascorbate) to fight the first visible signs of aging while providing powerful antioxidant support. What it does: C.E.O. C + E Protect and Repair Moisturizer infuses five per cent advanced, oxygen-stable tetrahexydecyl ascorbate (THD ascorbate) into the skin—the gold standard form of vitamin C. THD ascorbate is the newer, clinically-proven, oil-soluble derivative of vitamin C, which penetrates better into the skin while being exceptionally stable against oxygenation. With 5 per cent THD ascorbate, this moisturizer is powerful at fighting the first visible signs of ageing and restoring vital skin radiance, while being uniquely suitable for those with sensitive skin, as THD ascorbate is significantly less irritating than other forms of vitamin C. Once in the skin, it helps boost youthful-looking skin texture and volume, in addition to providing photostable, antioxidant support. Blended with protective, anti-pollution expopolysaccharides and refining lime pearl extract, this formula visibly repairs the effects of ageing, environmental stress, and pollution-induced damage. It is rich yet never greasy, providing hydration and antioxidant protection to the skin for a visibly younger, softer, and healthier-looking complexion. What else you need to know: THD ascorbate (tetrahexyldecyl ascorbate) is the superior form of vitamin C. It is more stable and less irritating than ascorbic acid and other vitamin C derivatives.