Cloudy headlights are a safety problem before they are a looks problem. Here is what restoration costs, how long it lasts, and when a lens is genuinely past saving.
Modern headlights are not glass. They are polycarbonate, a plastic that is tough against rock chips but soft against sunlight. The factory applies a thin UV coating to protect it, and once that coating breaks down, the bare plastic underneath oxidizes. That is the yellow, chalky haze you see. It is on the outside of the lens, not the inside, which is good news: if I can reach it, I can remove it, sand out the damage, and protect the fresh surface.
The Crescenta Valley makes it worse. We sit above the marine layer much of the year, so cars here take more direct UV than cars parked near the coast. Most driveways in La Crescenta and Tujunga have no shade at all, and a commuter car that bakes in an open lot all day takes a double dose. Fire season adds fine ash that acts like an abrasive every time the lens gets wiped, scratching the weakened coating and speeding up the failure.
Oxidation does not just look bad. It scatters light. A hazed lens can throw a noticeably shorter and blotchier beam, and the light that does get through creates glare for oncoming drivers. On our darker streets, the ones without continuous streetlights up toward the mountains, that difference matters. If you have caught yourself leaning forward at night trying to read the road, check your lenses before you blame your eyes or your bulbs.
There is a practical side too. Cloudy headlights are one of the first things buyers and lease inspectors notice, because they read as neglect even on a clean car. I do a lot of lease turn-in details, and clear lenses are one of the cheapest ways to make a car present five years newer. It is a small job with an outsized effect on how the whole front end looks.
I start by confirming the damage is external. A quick polish test on one corner tells me whether the haze will come off or whether it lives inside the housing. Then I tape off the surrounding paint, because sanding near a fender edge without protection is how paint gets hurt. From there I wet sand through progressively finer grits, removing the failed coating and the oxidized plastic evenly across the whole lens rather than chasing individual yellow patches.
Sanding leaves the lens uniformly dull, which is exactly what I want. Machine polishing then brings it back to full clarity, and this is the stage where experience shows, because polishing plastic generates heat and heat can distort a lens. The last step matters most: a dedicated UV sealant over the fresh surface. Skip that and the bare plastic starts clouding again within months. Seal it properly and you are protected for a much longer stretch.
The whole job happens in your driveway or at your home, and most pairs take me about an hour. There is no downtime, no dropping the car anywhere, and no bumper removal. I bring water, power, and everything else. If you are adding it to an Interior Only Detail or a Standard Interior/Exterior Detail, I simply build it into the same visit.
Replacement headlight assemblies have gotten expensive. Even aftermarket units for common sedans often cost a few hundred dollars each, and OEM assemblies with LED running lights can go far beyond that, before you pay labor. Some cars require loosening or removing the front bumper cover just to get the housing out. Restoration starts at $50 to start. For the price of one assembly, you could restore both lenses several times over the life of the car.
That said, I will not sell you a restoration that will not hold. If a lens is cracked, has moisture sealed inside the housing, or has internal reflector damage, polishing the outside cannot fix it, and I will tell you that before I touch it. My goal is a lens that looks right and lights right, not a receipt. When replacement genuinely is the answer, you will hear it from me first. I go deeper on this in my guide, Hard Water Spot Removal: The Foothill Sprinkler Problem. I go deeper on this in my guide, Pet Hair Removal: What It Really Takes After a Trail Weekend. I go deeper on this in my guide, Smoke and Mildew Odor Removal: What Works and What Does Not. I go deeper on this in my guide, Engine Bay Detailing: Safe, Clean, and Worth It. I go deeper on this in my guide, Black Trim Restoration: Bringing Gray Plastic Back. I go deeper on this in my guide, Clay Bar and Wax: What Your Paint Feels Like After. I go deeper on this in my guide, Machine Polishing vs Hand Waxing: When Each Makes Sense. I go deeper on this in my guide, Light Scratch and Scuff Removal: What I Can Fix in Your Driveway. I go deeper on this in my guide, Leather Cleaning and Conditioning: SoCal Sun Is Brutal on Seats. I go deeper on this in my guide, Carpet Shampoo and Extraction: The Deep Clean Under Your Feet. I go deeper on this in my guide, Paint Protection With Wax and Sealants: What Lasts in Our Sun.
Restored lenses stay clear when the sealant stays intact. I recommend refreshing the protection about twice a year, which I can fold into a regular wash and wax or a monthly maintenance visit. Between visits, avoid harsh household cleaners on the lenses, and rinse ash off gently during fire season instead of dry wiping it, since dry wiping grinds grit into the surface.
Parking helps more than people expect. If you have any shade option, use it, and if the car sits nose out toward the southern sky all day, even turning it around changes the UV load on the lenses. None of this requires effort, just awareness. If your lenses are already past hazy and into yellow, a quick call to (818) 797-5396 and a photo is enough for me to tell you what is realistic.
One honest limit: some headlights have internal microcracking, damage inside the lens rather than on its surface. Polishing cannot reach that, so restoration will not clear it. I can tell when I look at the lens, and if yours is in that condition I will say so rather than take your money for a result I cannot deliver.
I am Eric Young. I detail every vehicle myself, at your driveway, seven days a week from 7:30am to 7:30pm. Tell me what your car needs and I will give you a straight answer.