You can use a variety of common household and automotive-specific products to clean car headlights effectively. For mild cloudiness, a paste of baking soda and vinegar or toothpaste can work as a gentle abrasive. For more significant yellowing and oxidation, dedicated headlight restoration kits are the most reliable solution. These kits typically include sandpaper of varying grits and a UV-protective sealant. For routine cleaning and maintenance, a specialized plastic cleaner and polish will help maintain clarity.
The best method depends on the severity of the damage. Cloudy headlights are caused by UV degradation which breaks down the polycarbonate plastic's protective coating, leading to oxidation. A restoration kit addresses this by sanding away the damaged layer and applying a new sealant. Using a sealant is critical; without it, the oxidation will quickly return.
Here’s a comparison of common methods:
| Method | Best For | Effort Level | Cost (Estimated) | Expected Result Duration |
|---|
| Toothpaste & Microfiber Cloth | Very mild, recent cloudiness | Low | < $5 | 2-4 weeks |
| Baking Soda & Vinegar Paste | Mild surface oxidation | Low | < $5 | 1-2 months |
| Plastic Polish/Cleaner | Maintenance & mild haze | Medium | $10 - $20 | 3-6 months |
| Headlight Restoration Kit | Significant yellowing/oxidation | High | $15 - $30 | 1-2 years |
| Professional Detailing Service | Severe damage or desired perfection | None (by pro) | $100 - $150 | 2+ years |
For a lasting result, always finish with a UV-resistant clear coat spray or the sealant provided in a kit. Avoid using harsh chemicals like WD-40 or brake cleaner, as they can further damage the plastic. The key is to remove the oxidized layer and then protect the fresh surface from the sun.
