What it is: A duo of Kiehl's potent anti-wrinkle serum with retinol that reduces wrinkles, firms skin and refines skin's texture for visible renewal.Who it's for: Ideal for all skin types.What it does: This facial serum is precisely formulated to deliver a daily-strength microdose of pure retinol for visible anti-aging results with minimal discomfort. The daily use serum is formulated with pure retinol, peptides and ceramides, working together within the formula to help skin achieve optimal results with minimal redness, dryness or peeling. This microdose formula visibly reduces wrinkles, refines skin texture and firms skin for a visibly renewed, younger-looking appearance. How to use: After cleansing, apply one pump of Kiehl's facial serum with retinol over the entire face, including the undereye and crow's feet areas, carefully avoiding contact with the eye and eyelid area. Follow with a moisturizing step and a sunscreen if using during the day. Kiehl's anti-aging retinol serum can be used daily, in the morning or at night. $184 Value 2 x 1.7 oz. Made in the USA