Retinoids (including Retin A). The only FDA-approved topical treatment for wrinkles is tretinoin, known commercially as Retin A. Ashinoff says this prescription cream reduces fine lines and large wrinkles, and repairs sun damage. Retinol is a natural form of vitamin A found in many over-the-counter products. Studies show that in a stabilized formula, in high concentrations, it may be as effective as Retin A, without the side effects, such as skin burning and sensitivity.