Instruct: Classify the given review as either positive or negative.
Query: Doesn't work

I used StriVectin for about 3 mos for a stretch mark caused by prednisone. I didn't notice any change whatsoever. Some of the reviews above look they were written by people selling competitor products, so I would not take them very seriously either. Overall, StrVectin didn't do anything for me. Save your money. By the way, at the suggestion of my dermatologist I used something called Activor Stretch Mark Erasor which also did nothing.