Xenon headlights refer to a type of vehicle lighting system that uses xenon gas instead of traditional halogen bulbs. Xenon is an inert, colorless and odorless gas that produces a brighter and more natural-looking light compared to halogen lights. The technology behind these headlights involves the use of high voltage electrical current to excite the xenon gas, which then emits light through a process called photoluminescence. This results in a whiter light with higher intensity and better color rendering than traditional headlights, making it easier for drivers to see the road ahead clearly at night or in low-light conditions.