Just bought a '97 Taurus. Must have lived on a dirt road as the driver window and windshield were scratched. Did the driver window first, as the scratches were so bad it was a safety hazard. The results were amazing. The glass looks new. When completed the windshield was nearly perfect with exception of the deepest scratches from tip of the wiper blades. Follow the directions and take your time and you will get great results. Use a sponge to keep the surface wet. One suggestion: make sure to tape off the bottom of the door windows so the compound doesn't run into the doors. The compound will splatter. In closing, I saved hundreds of dollars in glass replacement.