Your vehicle features a pair of headlights to aid in nighttime navigation and help to improve visibility when you are driving in foul weather. Whereas headlights of old, those installed on cars and trucks forty years ago, were made of glass, headlight assemblies on the vehicles of today are made of plastic. Over time, the plastic lens on a headlight housing can become faded or cloudy due to oxidation, making it difficult for the headlight bulb to shine through.
One solution for a dull and cloudy headlight lens is to simply replace the assembly. Another is to repair the lens through a service called headlight restoration.
Headlight restoration is the process of abrading the plastic surface of the headlight assembly lens to remove the outer layer of dull plastic. With the oxidized layer gone, the plastic face is buffed back to a clear and shiny state with a polishing compound and treated with a layer of plastic protectant. The process is similar to that of sanding and buffing the clearcoat paint on a vehicle.