I had allergic reaction to the kitten a couple of years ago. I used to have the acne but it wasn't that bad. However, after the allergic reaction, the whole face got bumps in a minutes and it did not want to disappear. Since then, I tried few products including Proactive, but this was the best. The serum in blue bottle really clearing the blemish spots in few days. It's been almost 2 years since I have been using them and I still use them everyday. Very Good and good price too.