How to restore yellowed headlights yourself – Complete DIY Guide
Why do headlights yellow?
Modern headlights are made of polycarbonate (plastic). Exposed to UV rays and bad weather, this plastic gradually oxidizes: it turns yellow, becomes opaque, and diffuses light less effectively.
The concrete consequences
- Light output reduced by 30 to 50%
- Risk of failing the technical inspection
- Visual devaluation of the vehicle
The 4-step restoration method
1. Clean the headlight with water and let it dry
2. Lightly sand with the abrasive included in the kit to remove oxidation
3. Apply the headlight polish with a microfiber cloth in circular motions