If the plastic is foggy or has a dingy yellow tint to it, it's time to restore the headlight. Check both bulbs to see if the inside of the glass is showing signs of age. If there is a brown/gray ...

Keep in mind, results may vary on these headlight cleaning methods, and keep your expectations in check, nothing compares to professional restoration. Toothpaste: Wiping headlights with toothpaste ...