Why headlights turn yellow
Modern headlights are polycarbonate with a factory UV coating. Sun exposure breaks that coating down over time, letting the plastic oxidize and turn cloudy or yellow.
Why quick fixes don't last
Toothpaste and bug spray tricks may clear the surface briefly, but without a new UV coating the lens re-yellows within weeks.
The proper process
Restoration involves masking surrounding paint, wet sanding through progressively finer grits to remove the damaged layer, machine polishing to clarity, and applying a UV-resistant clear coat.
Safety benefits
Clear headlights significantly improve nighttime visibility and can help vehicles pass Massachusetts inspection.
