These kits can brighten up the look of your car and take years off its perceived age. Plus, they help restore the output of your headlights, an important safety consideration. When headlight plastics are yellowed and fogged due to oxidation, they can reduce the brightness of your headlights by as much as 80 percent, making it less safe to drive at night. A quality headlight restoring kit is also a great DIY way to increase your car’s resale value. Whether you’re looking to get top dollar for a classic car or trading in your used beater, restoring the clarity of the headlights helps make a better first impression on buyers and appraisers.