Cloudy, Foggy, Yellow or Peeling Headlights? What Each One Means (and How to Fix It in Perth)

If you've searched for “cloudy headlights,” “foggy headlights,” “yellow headlights” or “peeling headlights,” you're probably describing one of the same half-dozen things that happens to every modern car eventually. They all look pretty similar from a metre away, but they're not the same problem — and the fix is slightly different for each. Here's a plain guide to what you're actually looking at, why it happens, and what works in Perth.

Cloudy headlights

A cloudy headlight looks like someone has rubbed a frosted-glass filter over the lens. You lose the sharp edges on the bulb or reflector inside, and at night the beam looks soft and scattered instead of focused.

This is the earliest stage of lens oxidation — the clear factory coating has worn through and the top layer of the polycarbonate underneath has started to go dull. In Perth it usually starts around the 3–5 year mark, faster on cars that live outside and faster again on cars parked near the coast. The fix is wet sanding and a 2-step machine polish, which cuts through the dull layer and restores the clarity underneath. See our headlight restoration Perth process for the detail.

Foggy headlights

“Foggy” is often the same thing as “cloudy” — the two words get used interchangeably. But sometimes foggy specifically means moisture or condensation insidethe headlight assembly. If you can see water droplets on the inside of the lens or a visible waterline at the bottom of the housing, that's an internal seal problem, not a lens surface problem. External restoration won't fix it — the housing needs to be opened and resealed, or the headlight replaced if the seal has failed badly.

We only do the exterior restoration, so if the fogginess is internal we'll tell you straight up and point you to the right type of specialist. Send a photo with your free quoteand we'll let you know which one you're actually dealing with.

Yellow headlights

Yellowing is lens oxidation that's gone a step further than cloudy. The polycarbonate itself is reacting with UV and oxidising — the colour comes from the plastic itself breaking down, not from dirt on top of it. You can't wash it off, you can't polish it off with a bit of toothpaste, and the colour isn't coming back on its own.

Perth gives you one of the harshest UV loads in the country — long cloudless summers, intense westerly sun, and millions of cars that live uncovered on driveways and streets. The fix is the same wet-sand plus machine polish process, which removes the yellowed surface layer entirely. The deeper the yellowing, the more sanding stages we use, but a properly yellowed headlight comes back clear in about an hour. For long-term protection afterwards, this is where a ceramic headlight coating genuinely pays off — it blocks the UV from reaching the fresh lens surface, which pushes the next yellowing cycle out from about 6 months to around 2 years.

Peeling headlights

Peeling is where the clear factory coating is literally lifting off the lens in flakes or patches. You can usually see sharp edges between the shiny clear bits and the dull, hazy, often slightly rough bits where the coating has gone. It looks worse than it is — the underlying lens itself is almost always fine; it's only the top coating that has failed.

Peeling needs a bit more work than yellowing: the remaining old coating has to be completely sanded back so the lens underneath is uniform, then polished the same way as a yellowed lens. The result looks just as good as a factory-new one; the only difference is the amount of sanding time at the start. A ceramic coating afterwards is strongly recommended for peeling repairs — it replaces what the factory coating was doing.

Hazy, dull, scratched, “milky,” sandblasted

These are all variations on the same underlying thing — surface damage to the polycarbonate lens. Hazy, dull and milky are usually early-stage oxidation. Scratched and sandblasted are mechanical damage, often from freeway grit and bugs, especially on cars that do long north-south runs between Perth and the regions. The restoration process is identical: enough wet sanding to get past the damage, then a 2-step machine polish. If the scratches are very deep (deep enough to catch a fingernail), the lens might not come back fully clear — but we'll see that from a photo before you commit. Send one with your free quote.

What doesn't work (and why)

You'll find a hundred TikTok videos suggesting toothpaste, Vaseline, WD-40, bug spray, bicarb soda, baking powder or Coke to “restore” a headlight. Most of them give you a very temporary optical improvement that lasts a few days to a few weeks and then looks worse than before. WD-40 is the worst offender — we wrote about why in the WD-40 headlight restoration myth. DIY store-bought kits can work OK for very light hazing (we covered that in DIY vs professional headlight restoration), but for anything past the earliest stages a professional job is faster, cheaper over time and dramatically clearer.

What it costs to fix properly in Perth

Our standard pack is $120 for both headlights — wet sand plus 2-step machine polish — and takes about an hour at your home or workplace. The premium pack is $180, which adds the ceramic coating for long-term protection. Peeling repairs are the same price as yellowing in most cases. See our full headlight restoration pricing for the breakdown.

Not sure which one you're dealing with?

Send us a photo with your free quoteand we'll tell you in plain English what's going on and what to do about it. Reply within 1 hour, 7am–6pm, 7 days. You can also go back to our headlight restoration Perth overview to see the full process and pricing.