Sanding Car Headlight Covers: Clear Vision Through Proper Wet Sanding

Faded or cloudy headlights not only ruin your car’s appearance—they also reduce nighttime visibility. Wet sanding followed by polishing is the most reliable method to restore clarity. This guide explains the process step-by-step, ensuring a long-lasting, professional-quality result using the right sequence of silicon carbide sandpaper grits.

Why Wet Sand Headlight Covers

Plastic headlights oxidize and turn hazy due to UV exposure. Wet sanding removes the oxidized surface and smooths fine cracks, allowing new clarity to shine through once polished. Combined with a UV sealant afterward, the result lasts for years rather than months.

Tools & Materials

• Masking tape to protect surrounding paint
• Spray bottle with water and a drop of mild soap
• Plastic polish or UV sealant
• Soft microfiber cloths
• Wet/dry sandpaper: 800 Grit (25-pack), 1500 Grit (50-pack), and 2000 Grit (100-pack).

Recommended Grit Sequence

• 800 grit: Removes yellowing, oxidation, and deep surface wear.
• 1500 grit: Refines surface texture for clarity restoration.
• 2000 grit: Polishes smooth and prepares for the final shine.

Step-by-Step: Wet Sanding Headlights

1. Prep the area. Clean the headlight and mask surrounding paintwork to prevent scratches.
2. Begin with 800 Grit (25-pack). Wet-sand horizontally with light pressure. Keep the surface wet at all times. This step removes oxidation and clears the cloudy layer.
3. Progress to 1500 Grit (50-pack). Sand vertically to remove 800-grit marks and refine the finish. The headlight should appear evenly frosted.
4. Finish with 2000 Grit (100-pack). Wet-sand in circular motions for a smooth, satin look. Dry and inspect—the lens should be clear with no visible haze.
5. Polish and seal. Apply a plastic polish with a microfiber cloth or power drill pad until the lens shines. Finish with UV sealant to protect against future oxidation.

Special Cases

For headlights with cracks or deep gouges, start with 600 grit before 800. If yellowing returns quickly, it means UV protection was skipped—always seal after polishing. Avoid sanding glass lenses; this method is for plastic only.

Pro Tips

• Use gentle, consistent pressure to prevent uneven sanding.
• Work in shaded conditions to keep the surface cool.
• Rinse sandpaper often to remove debris buildup.
• Finish both headlights at once to match clarity and brightness.

Aftercare

• Reapply UV sealant every 6–12 months for lasting protection.
• Wash headlights regularly with mild car shampoo only.
• Wax lightly every few months to extend clarity.
• Keep microfiber towels clean to avoid scratching.

FAQs

• Can I skip the 2000-grit step? Not recommended—fine polishing removes micro-haze and gives true clarity.
• Will toothpaste work instead of sandpaper? It can remove light haze but doesn’t fix deeper oxidation like sanding does.
• Can I use a drill buffer instead of hand polishing? Yes, but keep speed low and pressure light to avoid melting plastic.

Watch & Learn

Using 800 Grit (25-pack), 1500 Grit (50-pack), and 2000 Grit (100-pack) provides a professional, long-lasting restoration—bringing your headlights back to crystal-clear brightness and improving safety on the road.