Answer
For headlights, wet sand 800 or 1000, then 1500, 2000, and 3000. Polish and protect after sanding.
Why it happens
Headlight lenses need a gradual wet sanding sequence before polishing and UV protection.
Recommended grit
Use 800 or 1000 for oxidation, then 1500, 2000, and 3000 before polishing.
Wet or dry
Wet.
Success check
The lens has an even fine haze before polishing, with no deep sanding lines.
What to do
- Wash the headlight lens.
- Wet sand evenly with 800 or 1000 for oxidation.
- Refine with 1500, 2000, then 3000.
- Polish and protect the lens after sanding.
Avoid: Do not stop at 800 or 1000 grit because the lens will stay hazy.