How to Quickly Whiten Yellowed Car Light Covers?

[MacMargaret]

If the car's light covers have turned yellow, you can opt for sanding or polishing them. If you prefer not to sand or polish, you can directly replace them with new covers, as plastic products tend to yellow over time with use.

[EliasFitz]

I've dealt with yellowing headlight covers, and the simplest DIY method is to polish them with toothpaste. Take regular white toothpaste, apply it evenly on the surface of the cover, and gently rub in circular motions with a damp cloth or small sponge for about 10 minutes. It removes the oxidation layer and quickly whitens the cover. Then rinse with water and dry with a clean cloth. This method is quick and inexpensive—I've tried it on my own yellowed headlights, and the effect is immediate. Just be careful not to rub too hard to avoid scratching the plastic surface. Headlight covers often yellow due to UV exposure or lack of cleaning over time. To prevent this, park in shaded areas and clean regularly with a soft cloth to slow down aging. This DIY works well for mild yellowing; if severe, consider professional polishing kits to ensure brightness and driving safety. The whole process requires no special tools—it's safe, efficient, and perfect for car owners looking for a hassle-free solution. Give it a try!