How to Clean Yellowed Car Headlights?
2 Answers
During daily driving, if you notice that your car's headlights are not bright enough, you should first check whether the lights are functioning normally. If both the headlights and covers are in good condition after inspection, you can clean them to restore brightness. Start by gently sanding with sandpaper, then rinse off surface dirt with water, and finally wipe the headlights and covers with a specialized cleaning solution. You can also choose to clean the yellowed areas with soapy water. Avoid using laundry detergent, as the chemicals in it can corrode the headlights and covers. Soapy water, being alkaline, is the best choice for cleaning headlights. Yellowing of headlights is often caused by inadequate cleaning in daily life. Regularly wiping them with a soft cloth can effectively prevent dirt buildup. Be sure to use a soft towel to avoid scratching the covers. Reasons for headlight yellowing: The main reason for yellowing car headlight covers is prolonged exposure to sunlight. Modern car headlight covers are made of molded plastic, which is very durable and transparent but can oxidize and age over time, leading to yellowing with prolonged use.
My car's headlights had turned yellow before, making night driving feel unsafe, so I researched DIY cleaning methods. Trying toothpaste proved quite effective—first rinse the lens with water, then apply a moderate amount of toothpaste on a soft cloth and scrub in circular motions for a few minutes, focusing extra friction on the yellowed areas. Finally, wipe clean with a damp cloth. The yellowing visibly faded, and brightness improved significantly. Remember not to use hard brushes to avoid scratches. I’ve also heard baking soda mixtures can work as an alternative, or buying specialized headlight cleaners for more convenience. The key is regular inspection—if DIY doesn’t help, a professional polishing at the repair shop is always an option. This DIY approach saves money and effort while extending headlight lifespan.
