Auto & body
Restoring cloudy headlight lenses
Four grits and a clear coat — and they look new.
Oxidized headlight plastic responds beautifully to a wet sand climb. The trick is going finer than you think, then sealing it so it doesn't fog back up in three months.
The climb
The exact sequence, in order.
- 1 800
Cut through the oxidized layer
Wet, by hand. Keep it flooded with water and soap.
Reach for
3M Wetordry Assorted Pack — 600 to 1500 Grit
- 2 1500
Refine the surface
Same wet technique. The cloudiness will start to clear.
Reach for
3M Wetordry Assorted Pack — 600 to 1500 Grit
- 3 2000
Erase the 1500 scratches
Wet, by hand, lighter pressure.
Reach for
3M Wetordry — 2000 Grit
- 4 3000
Final clarity before sealer
Final wet pass. Lens should look almost clear before you stop.
Reach for
3M Wetordry — 3000 Grit
Watch out for
The things that quietly ruin the job.
- ·Mask off the paint around the lens. Sandpaper bites paint instantly at any grit below 2000.
- ·Skip the UV clear coat and they fog back up in 90 days. Always seal.
- ·Don't use compound — the polish-grade abrasive isn't aggressive enough to remove oxidation in a reasonable time.
Questions people ask
The practical part.
Toothpaste headlight restoration — does it work?
Briefly. Toothpaste contains mild abrasive and removes the surface oxidation but doesn't reach the layer below. You're back to fogged in weeks.
What sealer?
Automotive UV clear coat — aerosol or wipe-on. Without UV protection the sun re-oxidizes the lens.
Keep going