Tagged with "foggy"
Why Do Car Lights headlights oxidize and get foggy? Tags: car lights oxidation foggy headlights why do headlights get foggy and oxidized.

Why Do Car Lights headlights oxidize and get foggy? The reason why this happens is that the UV shield coating that was applied to the headlights when they was made has deteriorated.

Nearly all plastic headlights today are made of the material called polycarbonate. It is a harder sturdier form of plastic that can take the impact of small rocks and pebbles without shattering like plain plastic acrylic would do. The only problem polycarbonate has is that it is sensitive to the UV rays of the sun. So a UV coating must be applied to the plastic, otherwise it will begin to yellow and oxidize in a matter of 6 to 8 weeks of sun exposure. The factory UV coating does not last forever. The effects of the sun and the ongoing weather conditions over the years eventually ware away the coating until the sun starts oxidizing the polycarbonate underneath it. If the vehicle is always kept in a garage during the life of the vehicle, oxidation can never affect the vehicles headlights at all.

To remove the oxidation and prevent its quick return, the oxidation must first be remove by abrasive polish products for light oxidation, or the method of wet sanding for heavy oxidation. After the oxidation has been removed, a new UV shield coating must be applied to keep the UV rays of the sun from reoxidizing the headlights again in 4 to 6 weeks.

Does using toothpaste remove oxidation? Certain teeth whitening toothpaste is claimed to do the job on YouTube videos. BUT PLEASE BE AWARE: it takes an awful long time of scrubbing with toothpaste to remove oxidation buildup. Anywhere from one hour to two hours depending on how bad the oxidation is. ALSO BE AWARE: If you do not replace your UV coating that has deteriorated, your headlights will oxidize again in four to six weeks time. So you'll be scrubbing with that toothpaste again and again, and again until you replace the UV coating.

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