Restored some slightly cloudy headlights today.
Before: The headlight has been cleaned and dried and masking tape to protect the surrounding area.
Now I'm sanding it with the coarsest of 4 sanding pads. The one marked #1 on its face. The kit provides a spray bottle of soapy water for wet sanding.
I dried it off and you can see how super scratched that first grit of sandpaper made it.
So then I sand in the other direction with number 2, and it's already looking a bit better.
On to number three and then four, always sanding perpendicular to the last time to get rid of the scratches left by the earlier grit.
And then after you go through all four grits, you switch to the abrasive polishing compound.