Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not so effective

Although many reviews said that this product was effective, it did not work at all for me. In some places it actually made my acne worse. i did return the product and receive the full refund. I decided to go to a dermatologist, who prescribed medication for me that has been much more effective that any treatment that I have tried. My advice is, before you purchase 'miracle' products consider going to a dermatologist. They are usually covered by insurance but if you do not have insurance the visit charge is about $50, and the Rx is about $25 with rebates that can make them 0.