Crystal clear restored headlight on a grey GMC
Car care guide

Why Headlights Turn Yellow (and How to Fix Them)

What causes hazy, yellow headlights, why toothpaste and quick wipes don’t last, and how professional headlight restoration brings them back.

By Soheil, owner of Sparkwave Detailing ·

Most headlight lenses are polycarbonate plastic with a factory UV coating. After several years of sun, the coating breaks down and the plastic underneath oxidizes. That’s the yellow, cloudy haze, and it can cut how much light reaches the road on dark, rainy nights.

Is it inside or outside the lens?

Almost always outside. Run a finger across it: if it feels rough or chalky, it’s surface oxidation and it can be restored. Fogging or water droplets on the inside mean a broken seal, and that usually needs a new assembly.

Why quick fixes fade

Toothpaste, bug spray and one-step wipes polish off a thin layer, so the lens looks better for a while. But they leave bare plastic with no UV protection, so the haze often comes back within a few months.

How proper restoration works

  • Wet sanding removes the damaged, oxidized layer.
  • Compounding and machine polishing bring the plastic back to clear.
  • A UV-protective coating replaces the factory layer so the haze doesn’t come straight back.

Restore or replace?

New headlight assemblies can cost hundreds of dollars each, more for LED units. Restoration is usually a fraction of that. Our Headlight Restoration is $99 for both lights on any vehicle ($69 when added to another detail), done in your driveway and backed by a 1-year warranty.

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What our customers say

Read all 42 on Google

“I appreciate the messages saying they are on the way and when they arrive. The guys did a great job, I’ve never had detailing done and was very impressed with the job. They didn’t miss any nooks or crannies. Very nice and friendly guys.”

Dorothy B. Google review

“Soheil is very detail oriented and made the used car I bought feel brand new. Super easy to set up the appointment and a nice guy as well. Will definitely book with Sparkwave again.”

Dev S. Google review

“This group of people are professional, on time, knowledgeable and did a fabulous job clean and deodorizing my car that has not had a detail in 5 years. Amazing! Highly recommended. Super convenient to come to your own house and get the job done. Thank you again!”

Dianna S. Google review

“Solid clean job on the interior of my car, will defs call him up when I come back into Langley!”

Dabarq Google review
Read all 42 reviews on Google

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