A unique de-aging booster that harnesses the full power of pure, fresh vitamin C at Clinique's highest concentration to brighten, even and retexturize skin. This booster works as a daily treatment to help visibly rejuvenate skin from the outside, giving your de-aging a simple and seamless reinvigoration. From the first application, it helps brighten skin. Over time it helps reduce the appearance of age spots and the look of line and wrinkles. Pure vitamin C naturally degrades when exposed to oxygen, so it's most powerful when fresh. This stay-fresh packaging isolates the pure vitamin C until activation, so it maintains its freshness and full power for maximum results.