What it is: 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.What it does: 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. How to use: Leave the cap on and remove foil. Firmly press the inner bulb twice to release the vitamin C powder into the soothing emulsion. Shake for 15 seconds and before each use. Remove the cap. Mix two drops with your moisturizer morning and night to power up your regular routine. Avoid the eye area. For full potency, use within seven days then discard. It retains its full power for seven days but it may darken due to normal vitamin C oxidation.- 1.16 oz. size includes 4 bottles at 0.29 oz. each- 100% fragrance-free- Allergy testedIn stores now: Visit the Clinique counter at your local Nordstrom for a free 5-day supply of your perfect moisturizer.