What is xenon headlight?

Xenon headlights became common in the 2000s and are often distinguished by their slightly bluish, white light.

"Xenon" is the established name for the entire system, even though the light is produced by the interaction of xenon gas and metal halides.

Unlike incandescent bulbs, xenon bulbs do not have a filament; instead, the light is produced by an electric arc inside the bulb.

Xenon bulbs generally last longer and provide better illumination than halogen bulbs. The disadvantages are their higher price, the need for control electronics, and the fact that the light reaches full power after a short delay.