It really depends on your driving conditions, and how you maintain your car. If you frequently drive on dusty roads or park in direct sunlight, your headlights may need cleaning every 3–6 months.

Headlights are among a car's most essential parts, so it's vital to keep them clean and bright. Luckily, you only need a fresh lemon and a box of baking soda to do so. The first way is to pour a ...