I have a question for anyone that knows. I know in the past if you touch Halogen bulbs or get them dirty you can wipe the glass with rubbing alcohol. Can you do the same with HID bilbs or is there something else that shoud be used?

For all of you wondering, no I didn't touch the bulb but I am dong H1 conversion and I had to do some mods that got some dust and tiny spec of silicone on the bulbs.

 

Same deal, clean them with alcohol.

 

yup same deal