Surprisingly, the answer is yes. Although it sounds like most of the hacks that you find on the internet never work, toothpaste can help clean your foggy car lights. Well, to an extent. That’s because toothpaste acts as a soft abrasive and also an antioxidant. This can clean up the dirt on the lights and remove some of those sun-damaged layers. To do this, apply a fingertip amount of toothpaste to the bulb and rub for some time. After that, wash away the toothpaste and dry it with a clean cloth. This will improve the lights to clear up a little bit but don’t expect your lights to come out shiny and brand new.