Today’s vehicles are protected with a clear coat, but the headlights are not protected from the elements.  Driving at night can be a real danger if your headlights are not maintained properly.  Headlights that are yellow, foggy, and milky consume many cars on the road today.  Most headlights are made of plastics that are polymers of high molecular mass and are unprotected.  Over time these polymers experience degradation due to exposure to heat, chemicals in the atmosphere as well as damage from the sun.

The Sun’s UV rays will turn your headlights yellow.  Consider a piece of notebook paper left in the back seat of a car for a month.  It slowly turns yellow under the constant light and heat. The same thing happens to your headlights at a slower rate. Pitted headlights are also another common reason that damage happens. In certain areas gravel is spread on snow covered roads in the winter months.