From there, that commenter advised repeating those steps with 1,000-grit and 1,500-grit paper. “You can do this by hand, but a DA [dual-action polisher] makes life a lot easier,” that person ...

Start with 1500 grit paper, then work your way right up to 3000 grit, keeping the surface wet the whole time. Rinse off any clear coat residue, and the job is done. I also like to add one more ...

If the headlight is just dull or yellowed, start with the 1,500 grit and work up to the 2,500 grit. If there are light scratches, start with the 1,000-grit paper. Allow the polish to dry ...