A clinically proven dual-action, slow-release, overnight skin renewal cream for a resurfaced, smoother, and more even-looking complexion in just 4 weeks*. ​Formulated with entrapped Retinol powered by slow-release technology for optimized delivery into deeper layers of the skin to encourage skin cell turnover, and Polyhydroxy Acid (Gluconolactone) to provide gentle yet effective exfoliation on the surface of the skin. ​The synergistic combination of these two potent ingredients helps refine skin texture, improve skin smoothness and skin tone evenness while reducing the appearance of blemishes, fine lines, and wrinkles. ​. | Obagi Medical Retinol + PHA​ Refining Night Cream | Dermstore