Amazing results after a 1 month use! I suffer from whiteheads mostly in my forehead and cheek area and after applying the AHA Whitehead Power Liquid a few times per week I noticed a difference in the texture of my skin. Not only are my whiteheads in my forehead completely gone but my skin looks brighter and smoother. Along with the gentle cleanser these two Cosrx products will get the job done effectively. Just be careful with any chemical exfoliant since its not for everyone!