What It Does Turns your moisturizer into a de-aging powerhouse. Our breakthrough day and night Boosters with Pure Vitamins C 10% and A (Retinol) are freshly activated to deliver prescription-level results against visible wrinkles.* Simply mix a few pumps with your favorite Clinique moisturizer—Vitamin C in the morning, Vitamin A at night. Enjoy a potent de-aging boost without changing the moisturizer you love. Every day, Vitamin C 10% works on skin's surface to instantly brighten. See remarkably even-toned and retexturized skin with continued use. Every night, Vitamin A (Retinol) penetrates deeply into skin's surface. Over time, skin appears revitalized, lines and wrinkles 're-filled,' youthful tone recaptured. *Proven Results Based on a 12-week clinical study using Vitamin C 10% in AM and Vitamin A (Retinol) in PM, vs. night time use of a leading prescription ingredient. first AM use   radiance instantly boosted in 1 week       smoothness and texture improved in 4 weeks     fine facial wrinkles visibly reduced in 12 weeks   skin tone is more even & deep-set wrinkles and forehead lines dramatically reduced Key Ingredients / Technology Our guiding dermatologist recommends using topical Vitamins C & A together for their synergistic power. Fresh is key—they naturally degrade when exposed to oxygen and lose their effectiveness. Clinique’s exclusive stay-fresh packaging protects their full potency until activation for maximum results. Pure Vitamin C 10% powder concentrate is sealed in an airproof chamber. Pure Vitamin A (Retinol) liquid concentrate is encapsulated in a double-walled chamber. Activating the package releases the pure Vitamin into the vial's de-aging soothing emulsion, which is bursting with powerful revitalizing ingredients. Once activated, each Booster is at maximum potency for 7 days/nights, but can be used up to 14 days/nights. Our Clinique Clean Philosophy Simple. Safe.Effective