It's been exactly one month since I tried using this. I can say that it really is effective when it comes to scars as they lighten way faster than normal (when you don't put anything at all and just leave it as it is). It prevents blackheads from getting worse. It also dries up my pimples at times but I'm not quite sure if it really can prevent pimples and blackheads from forming or coming back. However, it can dry your skin up but that's pretty easy to manage. Overall, I'm happy because it tightens up my skin and heals scars fast.