Foggy headlights are a problem that has arisen in the past couple of decades, as we have moved away from glass sealed beam bulbs and into an era of plastic lenses with bulbs inside. While modern headlights are superior to the sealed beam headlights of years ago, they do tend to fog up after years of use. It’s a good trade for far better illumination and easier replacement, but an issue nonetheless. Hours and hours of heat, sunlight, and age eventually cause them to cloud up, which can reduce visibility at night in addition to worsening the appearance of your car, truck, or SUV. From By The Book Diesel & Auto Repair in Albuquerque, NM, here are some tips on taking care of your foggy or cloudy headlight issue.