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How do you clean a headlight bulb?

Car  Mégane RS
well basicly took it out to fix the lamp and accidentally touched it, also noticed theres a bit of dust on them, they are xenon bulbs too :(

Vinny
 
Turn them on for a few minutes then remove promptly and drop in a bucket of cold water.
 
Dink said:
meths i wouldn't try white spirit


Deffo methalated spirit to remove any grease which you will have put on the lamp from your fingers, which, if not cleaned off will cause the lamp to heat up and pop. (Notice I use the word lamp not bulb because you plant bulbs init! :)
 
Jim NM said:
Deffo methalated spirit to remove any grease which you will have put on the lamp from your fingers, which, if not cleaned off will cause the lamp to heat up and pop. (Notice I use the word lamp not bulb because you plant bulbs init! :)

oh yes
 
This is a serious answer.

Halogen bulbs have a quartz envelope, not glass like an old-style incandescent globes. You can clean them with a gentle solvent loke alcohol. Isoropyl alcohol cleaning pads are readily available for lots of uses, like cleaning computer equipment.
 
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