Kiehl's Since 1851 Fast Release Retinol Serum

What it is: A powerful anti-aging retinol night serum that helps accelerate skin surface cell renewal to visbility improve fine lines. Who it's for: For retinol acclimated skin. What it does: Experience visible reduction of fine lines in just five days and visible improvement in deep wrinkles in two weeks with this fast-acting 0.3% Retinol night serum. Its innovative packaging isolates a high concentration of pure retinol powder so it can be freshly mixed into the serum upon first use. With continuous use, this fast-acting 0.3% retinol night serum helps skin look renewed for a visibly smoother, more youthful appearance. . How to use: To Activate: Flip the bottle upside down, remove the bottom cap and set aside. Open pouch, twist the retinol capsule onto the bottom of the bottle. Push the button down on the capsule to release the pure retinol powder. Shake vigorously to fully mix into the serum. Remove and discard capsule, replace with original bottom cap. To Apply: Press down on black button 2-3 times for a pea sized drop. Gently apply over clean, dry skin. Complete your nighttime skincare routine. Apply once a day at night. 0.94 oz. Paraben-free; oil-free; fragrance-free Made in the USA