Recently purchased this product to remove some small scratches on my windshield. Nothing to deep, but still noticeable when driving. After about 3 hours of polishing I was able to see a significant difference. The scratches were about 90% gone, which was enough for me to not want to purchase another windshield. It gets VERY messy too. Had to give my car a deep cleaning afterwards.

Overall I would recommend this product if you have scratches that aren't very deep and are on a budget that prevents you from getting another windshield. Be prepared to put in a lot of work to get your windshield close to perfect.