I use this after my shower every night and I haven't had bacne in months. I know a lot of people cleared up in a manner of days or weeks, but for me, it took several months. It was definitely worth the wait though - my skin evened out, scars faded, texture improved, and now I am clear. I highly recommend trying this product. It sprays on easily and cools irritation. Just be patient and I'm confident you will see results.
For a decent period of time I also washed my back with apricot scrub in the shower and THEN applied this spray after I dried off. I think this is what helped me clear up quicker. Now (after several months of this routine) I just use this product and have dropped the apricot scrub. It has been months and I have not broken out.
Please read other reviews on this product around the internet and consider purchasing it. It is a little expensive, but if used conservatively, it can last 1-2 months.
For me, this is just what my back needed. I hope it works for you too!