A car's headlights grow yellow or cloudy over time due to the breakdown of the protective layer on the lens. That contamination can cause your headlights to be dimmer—and therefore less safe. One way ...

Water is supposed to stay outside your headlights, not inside. Moisture in your headlights affects the optics, making them generally dimmer or even causing blind spots where no light shines at all. In ...

Water is supposed to stay outside your headlights, not inside. Moisture in your headlights affects the optics, making them generally dimmer or even causing blind spots where no light shines at all. In ...