Pro X by Olay Pro-Retinol is co-designed by Dermatologist to effectively fade wrinkles in 28 Days, reduces 5 stubborn lines & wrinkles by targeting the root causes and improving skin texture for smoother, younger-looking skin. ProX Pro-Retinol increases Elasticity and Smoothness. It is mild and gentle on the skin,causes less irritation or redness compared to similar Retinol products. Non-Greasy, Light-weight Formula for Easy Absorption.