What is the reason for a sudden yellowing of xenon lights?

[SanPeyton]

There are two situations for the yellowing of xenon lights: 1. The color temperature of the xenon light is low, and low color temperature light appears yellow; 2. There is a problem with the headlight, such as oxidation or yellowing inside the headlight. The first situation is normal and not a problem, while the second requires inspection at an auto repair shop. Methods to deal with yellowing xenon lights: 1. Use a soft cloth to remove dirt, debris, and other particles from the surface of the headlight; 2. Clean the headlights with soap and water every three months to prevent dirt buildup and avoid yellowing; 3. Polish the headlights after cleaning, using a chemically synthesized polish to wipe the headlights, and follow up with waxing for protection; 4. When the car is not in use, park it in a garage or a shaded area to reduce exposure to ultraviolet rays, which can oxidize the polycarbonate material of the headlights.