Headlight lens cleaning can be challenging. Headlights on late model vehicles using a plastic lens because of the high intensity bulbs inside, and for aerodynamics.
There are certain headlight lens cleaning tips you should follow. These tend to dull due to UV rays, dirt and oxidation. The best method to restore them back to the original brilliance easily as well as inexpensively is with a headlight lens restoration kit. These can be purchased at any local auto parts stores for just a few dollars.
The kit comes with a circular buffing pad meant to be used with a drill, three sheets of sandpaper, polish, buffing pad, a microfiber cloth and UV inhibitor. This UV inhibitor is necessary to keep the lens from dulling again in the next three or more months.
This process requires a drill and a roll of masking tape. Tape around the circumference of the headlight with the masking tape so the polishing process does not effect the paint.
Wash the headlights with dish soap and water to remove all contaminants. Put the buffing pad in the drill and install the heaviest grit sandpaper in the box. Start with this and move to the next higher grit and finally to the finest sandpaper. Sand the lens smooth with very little pressure. Do the opposite lens before moving to the next finer sandpaper. Proceed until the lens is clear. It will be a little cloudy at this point however evidently free of oxidation.
Remove the sandpaper from the pad and cover the lens with the supplied rubbing compound. Buff the lens to a crystal clarity. Rub the lens with the microfiber cloth to finish the buffing process. Coat each lens with the UV inhibitor and they are finished. Remove the tape and wax the painted area.