Good product. I have been using this product for 3 weeks and it's been good so far. I haven't had any skin reactions or breakouts from this product, so that's always good. To be honest, I still have blackheads, but I don't have as many now. I do have acne-prone, combination/oily skin, so I've been making great progress with the Cosrx products. In my experience, it works best with Cosrx's AHA Whitehead Power Liquid & Clarifying Treatment Toner, as well as the OST Vitamin C serum. If you do have the odd breakout that has opened, I recommend using the Cosrx acne patches!

HIGHLY RECOMMENDED! Come with a lot of product at a very affordable price.