The Retinol Fast Release Wrinkle-Reducing Night Serum by Kiehl's is a powerful and innovative serum, designed to visibly reduce the appearance of fine lines and encourage firmer-looking skin.A unique chamber system within the bottle isolates a high concentration of pure retinol powder, that can be freshly mixed into the serum upon each application to help ensure maximum efficacy. With continuous use, the skin appears smoother, with fewer textural irregularities and a more even tone.
