The Kiehl's Retinol Fast Release Wrinkle-Reducing Night Serum is a powerful skincare product designed to target wrinkles and improve skin firmness. This 28ml serum contains retinol as its active ingredient, making it suitable for all skin types. The product comes with a 1g capsule of powder, adding extra value to the set. With a formulation specifically for night use, this serum is part of Kiehl's Dermatologist Solutions line, offering high-quality skincare for both men and women.