The Kiehl’s Retinol Wrinkle-Reducing Night Serum is a potent anti-aging skincare product formulated with retinol, a known active ingredient that helps to reduce wrinkles and improve skin texture. This .94 fl oz (28 ml) night treatment serum is designed for regular use and comes in a boxed set with a powder included. Perfect for those looking to combat signs of aging and achieve a more radiant complexion, this Kiehl’s serum is a valuable addition to any skincare routine. Never opened and fast shipping!