If the headlights are only slightly foggy, you can try and restore them using an abrasive, like toothpaste, and lots of scrubbing. First, clean the headlights with Windex or soap and water. Then, using a soft cloth, rub a fingertip amount of toothpaste onto the wet headlight. (Toothpaste with baking soda works best.)

Sometimes, you’ll find them on the front corners of the car, near the headlights. Adding to this confusion is their differing names. Although they’re called sidelights in the UK, in the US and Canada they’re referred to as parking lights. Sidelights (or parking lights) aren’t as bright as headlights.

Spray a generous layer of WD-40 over the headlights and let it sit for 5-10 minutes. While you wait, the specially engineered solution will expertly get under the buildup and muck, making your next step easier. Take a soft, clean loofah and scrub the headlights gently.

Waxing your headlights is important as waxing the exterior paint of your car. This can be applied to the lens treatment to add an extra layer of protection. Wax keeps debris from sticking to the surface of the plastic.

SUMMARY. While there are multiple methods for cleaning plastic lenses, including household items, a specialized solution like the Turtle Wax Headlight Lens Restorer Kit is the best way to restore dull yellowed headlights and protect them from future yellowing.

In general, headlight restoration lasts for 10 months to 3 years depending on several factors such as the type of lens, type of sealant, environmental conditions, and care or maintenance performed on the vehicle.

Park your car in the shade: If possible, park in the garage or under a shady tree. If you don’t have that option, face your headlights away from the sun when parking outside to reduce UV exposure and slow the oxidizing process.