I had a ridiculous amount of closed comedones on my forehead and temples (stress related acne) and an ungodly amount of clogs on my cheeks when I began using this product. It's without a doubt effective. The comedones are gone and most of the flesh-colored bumps have gone away. However, I had to purge A LOT to get them to disappear and it wasn't a pretty sight. Purging lasted for over a month since I had so many clogs, so be sure to know what you're in for when you start using this.