Click here to buy ZO Skin Health Products Retinol helps reduce fine lines and wrinkles while ceramides support hydration and smoother skin surface. Complements skin’s own natural recovery process. Calms and soothes irritated skin. Helps restore hydration and nourishment to severely dry, dehydrated skin. Reinforces the protective barrier of the skin to prevent further dryness50 mL / 1.7 Fl. Oz.