Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not happy with product!!

I purchased StriVectin-SD Intensive Concentrate for Stretch Marks in January. I decided to give the product a chance, being that I have heard rave reviews about it. After the first week of using StriVectin, my strech marks were smoother and so was the surrounding skin. I continued to follow instructions carefully, I even exfoliated three times a week, thinking this would also help the process. By the end of the month I noticed no change at all! I just had smooth strech marks, wtf? I decided after the sixth week if nothing happed, I would return the product. Just as I thought, after six weeks of using this product, I was disappointed to see that nothing changed. Don't waste your money, this is clearly for fresh stretch marks and companies should make it a point to say that.