Instruct: Classify Amazon reviews into positive or negative sentiment
Query: GREAT PRODUCT-IT ACTUALLY WORKS

I've been faithfully using this product for the past month, and I can honestly say that my moderate/mild acne has gotten under control. I still break out with a zit or two every other week; which is a lot better than when I was using ProActiv, which was about a couple of blemishes and dry, flaky skin every week! But with most acne products, this system can dry out your skin, so use moisturizer and sunblock.