Cleaning Headlights

[Rawze]

proper way of restoring the ouside of clear plastic lens headlights is...

* de-greassing them with a degrease that will not melt plastics.

* Then gently and uniformly sanding to 480-grit wet sanding to remove dirt .

* Then gently and uniformly sanding to 600-grit wet sanding.

* Then gently and uniformly sanding to 800-grit wet sanding.

* Then gently and uniformly sanding to 1000-grit wet sanding.

* Then gently and uniformly sanding to 1500-grit wet sanding.

* Then gently and uniformly sanding to 2000-grit wet sanding.

1000 - 2000 can be found in this kit that I use for mine ... https://amzn.to/2ZB3xaO

* Then boil some Dichloromethylene in a mason jar on a hot plate with a rubber tube in the top, use the fumes coming out of the tube to easily blend the now sanded to 2000 grit lens surface to a 100% clear finish (this method is known as vapor polishing). This will also anneal its outer layer and protect it from scratching and road dust as much as possible, so that it will last a very long time just like when the lens was new from the factory. (similar to this: https://youtu.be/gs8nAaJzu9U ).

it is a bit more work than simply polishing or restore methods, but it also lasts much much longer to boot.