Posted on 10/31/2025
It’s easy to overlook the condition of your headlights, especially when they still light up at night. But over time, exposure to sunlight, weather, and road debris can cause the outer lens of your headlights to become cloudy or yellowed. This haze not only makes your car look older but also significantly reduces the amount of light that reaches the road, creating a real safety concern during nighttime or poor weather driving. Dull or oxidized headlights can reduce visibility by as much as 70 percent, making it harder to spot pedestrians, signs, and hazards. If you've noticed that your headlights just aren’t as bright as they used to be, it may not be the bulbs. The problem is often right on the surface. What Causes Headlight Lenses to Dull? Most modern vehicles use plastic headlight covers made of polycarbonate. This material is strong and shatter-resistant, but it’s vulnerable to UV radiation. Over time, UV rays break down the outer layer of t ... read more