Every car's headlights eventually turn yellow — but most drivers never learn why, or that it can be reversed. This guide explains exactly what causes headlight yellowing at a chemical level, why it happens to every vehicle eventually, and what actually fixes it for good.

Wondering how much headlight restoration actually costs — and whether it's worth paying a professional or just doing it yourself? This honest breakdown covers real costs for every option: DIY kit, professional detailer, and full headlight replacement.