Headlight restoration

Headlight restoration is the process of removing the cloudy, yellowed oxidation that builds up on plastic headlight lenses over years of UV exposure. It typically works through a graduated sanding process, starting with a coarser grit to knock down heavy oxidation and moving to progressively finer grits, followed by a polishing step to bring back clarity.

This matters both for appearance and, in more severe cases, for how much usable light actually reaches the road at night, since heavily oxidized plastic scatters and blocks light rather than letting it pass through cleanly. Because the lens is plastic rather than glass, it responds well to abrasive correction in a similar way paint does, just on a softer material.

Look for a kit that includes a UV-resistant sealant or coating as the final step, since restored plastic without protection will oxidize again within months as it is directly exposed to sun with no barrier. Work wet when sanding to avoid generating heat that can cloud the plastic further. A common mistake is polishing without sealing afterward, which wastes the restoration work since unprotected plastic fogs up again quickly.