How to Clean Foggy Headlights

Cleaning hazy and foggy headlights can be done with toothpaste, special solvents, and a buffer. Read this guide on how to clean foggy headlights to learn the right methods.
Written by Logan Utsman
Reviewed by Carrie Adkins
There are three primary ways to clean foggy headlights: using toothpaste, using solvents, and using buffers.
Over time, the sun’s UV rays can damage the plastic housing used for most modern
car headlights
. This leaves behind pockmarks and checks, ultimately making the headlight look foggy.
Not only is this aesthetically displeasing, it diminishes your car’s ability to illuminate the road ahead, which can compromise safety.
On the other hand, if your headlight leaks or cracks, condensation will build up on the inside. There's no easy fix and you'll need to get a full replacement. Thankfully, this is rare. If your headlights are foggy, it's probably just on the outside, which is much easier to clean.
Here are three ways to clear foggy headlight covers, presented by
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How to clean headlights with toothpaste

This has become somewhat of an old-wives’ tale, but the "toothpaste method" can clean your foggy headlights depending on the severity of damage. Working the same way it breaks dirt from your teeth, toothpaste can help restore your headlights—as long as you use it properly.
Step 1: Tape off the headlights. Use masking tape to outline your headlights so nothing gets on the paint.
Step 2: Apply toothpaste to a rag. Very slowly and very firmly apply the toothpaste to the headlight, moving in a circular motion.
Step 3: Rinse, repeat, dry. If your headlights are significantly damaged, you may need to apply toothpaste multiple times.
When you’re done, rinse the headlight and allow it to air dry.
MORE: How to clean insects off your car exterior

Use special solvents to clean foggy headlights

If you feel uncomfortable using toothpaste on your car, or if your headlights need a thorough restoration, it’s best to visit your local auto parts store and buy special solvents designed specifically for headlights. These will be found in the cleaning section, and there are numerous variations. Some may require an electric buffer.
For this method, we’ll focus on the ones that don’t.
Step 1: Pick your favorite cleaner. Because there are so many on the market, you’ll want to be mindful of what tools you already have.
Some kits come with sponges used to spread and "buff" the solvent while others come with higher grit sandpaper strips to really clean the oxidation.
Pick the one that’s going to be most convenient for you, but do be aware that some brands have a higher prestige when comes to cleaning—and for good reason.
Step 2: Tape off headlights. Use masking tape to outline your headlights so nothing gets on the paint. Some cleaning kits come with this for your convenience.
Step 3: Rinse headlights prior to applying solvent. Using water and a rag, simply make sure you have the headlights as clean as they can be all on their own - basically make sure there is no road grime so you’re working with a clear surface.
Step 4: Follow application instructions for solvent. It’s important not to go rogue and just apply the solvent from your cleaning kit - some recommend specific methods such as using applying with a sponge or a spray bottle.
Step 5: Allow to dry. Make sure you’re doing this job on a dry, sunny day so your headlights can dry properly.

Use a buffer to clean foggy headlights

This is the professional method and the most effective way to clean foggy headlights. It does require you to have an electric buffer or a drill to insert a buffing pad, but the advantages of using a power tool will bring a hefty ROI if your headlights are very cloudy.
There are some cleaning kits available that sell small electric buffers and pads specifically for this application.
Step 1: Rinse headlights prior to using buffer. Using water and a rag, rinse and clean the headlights to remove road grime so you’re working with a clear surface.
Step 2: Tape off the headlights. Use masking tape to outline your headlights so nothing gets on the paint.
Step 3: Use the solvent and the buffer together slowly. It’s important to pick a slow speed and work in a circular motion when you
buff
so not to damage the headlight even more.
Step 4: Rinse, wax, and dry. Many kits will come with wax to protect the headlights once they’ve been cleaned. Rinse away the solvent, apply the wax and let the headlight dry.
Foggy headlights are not only ugly, they can be dangerous and obscure your vision—putting you at risk of getting into an accident. Make sure to get yours cleaned the moment you notice they're too foggy.
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