If your headlights are foggy or hazy looking, it may be possible to polish them using something you might find laying around the house: toothpaste. Surprisingly, toothpaste can actually work quite well as a polish on headlights. Using toothpaste alone on the headlight lens can make a big difference in polishing the headlights, but polishing once more with a final polish like Meguiar’s PlastX can really make the restoration look complete.