Understanding Headlight Restoration & Why UV Protection Matters
What Causes Headlights to Become Cloudy? Most modern headlights are made of polycarbonate plastic. It’s durable, lightweight, and impact-resistant — exactly what manufacturers want. But the tradeoff is that polycarbonate reacts to UV radiation. Over time, the sun slowly breaks down the surface, leaving it hazy or yellow. In addition to UV exposure, several other factors accelerate degradation: Road film and pollution Micro-abrasions from sand and debris Heat from the headlight bulb Poor-quality protective coatings applied in the past One common mistake I see is people trying to “clean” their headlights with household products like toothpaste or baking soda. That might remove some surface grime, but it doesn’t fix the underlying UV damage or protect the lens afterward. The result? The cloudiness returns within weeks. The Restoration Process: More Than Just Sanding Successful headlight restoration involves controlled abrasion — but it’s not simply scrubbing until the le...