Cloudy, yellowed polycarbonate lenses reduce nighttime headlight output by up to 80%. Here is why headlights degrade and how multi-stage wet sanding fixes them.
Modern headlight lenses are molded from polycarbonate and factory-coated with a UV-inhibiting lacquer. Over years of sun exposure and road debris, this outer layer oxidizes and turns cloudy. Multi-stage wet sanding followed by 2K UV-cured clear coat restores full optical clarity and WOF compliance.