The most sophisticated serum yet: A high-performance vitamin C and ferulic acid serum with the potency of 20% tetrahexyldecyl ascorbate to help restore, firm and brighten the skin. The most sophisticated serum yet: a high-performance vitamin C facial serum that’s clinically proven to improve wrinkles, pigmentation and firmness. Doctor developed for superior stability and potency, this daily defense serum helps to brighten and restore skin while providing advanced environmental protection. With 20% tetrahexyldecyl ascorbate, an ultra-concentrated, lipid-soluble form of vitamin C, it helps to fade the appearance of pigmentation and improves signs of skin aging like fine lines, wrinkles and loss of firmness. A synthesis of super-antioxidants ferulic acid and acetyl zingerone help to enhance the effects of vitamin C. An optimized hyaluronic acid complex brings renewed hydration to the skin, supporting a plump, smooth and firm appearance. The experience: The lightweight formula with hints of orange oil leaves skin with a power-packed radiant glow and soft, dewy finish. Who it's for: All skin types, especially those with advanced signs of aging, pigmentation and environmental damage Brand New. Unopened Box.