How to Solve the Yellowing Inside Car Light Covers?
3 Answers
To address the yellowing inside car light covers, the solution is to clean them with soapy water every three months. After cleaning, polish the headlights with a polishing agent and then apply wax for maintenance. Additionally, it's important to avoid parking the car in direct sunlight when not in use; try to park in shaded areas instead. The primary cause of yellowing on the surface of car headlights is prolonged exposure to sunlight, so it's essential to minimize sun exposure. Car lights are tools for road illumination during nighttime driving and also serve as signaling devices for various driving conditions, generally categorized into headlights, tail lights, and turn signals. The use and maintenance of car lights are closely related to safe driving at night or in adverse weather conditions, so their care should not be overlooked.
The yellowing inside the lamp cover is mostly caused by UV-induced plastic aging, and I can fix it myself. Using a specialized car lamp cover restoration kit is the most effective solution, which usually includes sandpapers of different grits and polishing paste. During the operation, first wash off the dust with water, then wet-sand with sandpaper to remove the yellowed layer, and finally apply a UV protective coating to prevent recurrence. The whole process takes about an hour, is low-cost, and can restore brightness. Additionally, avoiding prolonged exposure to sunlight and parking in shaded areas can prevent future issues. Replacing the lamp cover is also an option, though it’s more expensive, while DIY polishing is quite convenient. In short, timely treatment is crucial to prevent minor issues from escalating into hazards.
My car headlights also have a yellowing issue, and I found a cost-effective solution. Simply buy a bottle of cleaner or household toothpaste, then use a soft cloth to vigorously rub the surface of the lens cover. This can reduce the yellowing in just a few minutes. If that doesn’t work, there are cheap restoration pastes available online—just apply them yourself, but avoid pressing too hard to prevent scratching the cover. Replacing a new lens cover is too expensive, while this DIY method costs less than 50 yuan and can extend its lifespan. I’ve noticed that lens yellowing is due to aging, so regular wax protection helps. Act early—don’t wait until the lighting effect worsens and affects driving. This is the most budget-friendly trick.
