Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good product

You definitely feel the suction. As long as you don't use it too often, I'm sure it wont irritate your skin. So far, I think that it works quite well. Don't stay at one spot for too long. If your white/black heads don't get removed on some places don't force it - It will come out eventually. Good product, relatively easy to clean, and make sure you air dry the product when you can.