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 clinical-strength 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. • radiance instantly boosted • smoothness and texture improved• fine facial wrinkles visibly reduced• skin tone is more even & deep-set wrinkles and forehead lines dramatically reducedKey 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.Great to Know:Allergy Tested. 100% Fragrance Free. Non-Acnegenic.