Deep scratches continue to grow until your windshield breaks. Ask a glass repair specialist for advice. They may tell you to replace your entire windshield.
Dish soap abrades car paint, so using it on a windshield isn’t safe. Instead, try mixing together 1 part vinegar with 1 part water. Alternatively, use an all-purpose cleaner or degreaser.
Also, consider using the tape to outline the scratches. Place the tape on the inside part of the windshield to keep track of which spots you need to treat.
Kits are available online or at most auto parts stores. An acrylic scratch remover is a product similar to cerium oxide. It comes in a liquid form you drip onto the buffing pad. It works best on lighter scratches. Another option is to assemble the kit components separately. Get cerium oxide or another rubbing compound. If you have a handheld buffing and polishing tool, use that to apply the polish. [7] X Expert Source Chris ParkerFounder, Parker Eco Pest Control Expert Interview. 16 February 2021.
Apply the toothpaste the same way you would apply cerium oxide or another buffing compound. Wipe off the excess paste when you’re done. Toothpaste has the advantage of being safer to use, but it isn’t as immediately effective on most scratches.
Wearing goggles is also a good idea. It eliminates the possibility of polish splashing into your eyes. Work in a ventilated environment if possible. Open your garage door, for instance, to help disperse the powder. Keep close to an electrical outlet, though, since you need one for the buffing pad.
Making the initial estimation is tricky since there are no hard and fast rules about how much polish to use. You are better off making more than you need or focusing on a single scratch at a time.
Thin out the mixture by adding more water, or thicken it by adding more powder. Don’t wait too long to apply the paste. If it starts to harden, spray it with more water.
Use only electric drills or polishing tools on the windshield. Cordless tools don’t generate enough power and may overheat. Use tools that run at 1300 rpm or higher.
If you still see scratches in the windshield, chances are the paste didn’t get inside them. Spread more paste over them. Align the edge of the buffing pad over each scratch and grind them down again.
