guile86

I wouldnt put any solution if your planning on baking them. Fairly easy just make sure you wear gloves!

nomis_nehc

Do you know how this happened?

I don't know of a way to clean up the lens from inside without opening up the headlights. With that said, something that I thought of in theory that should work: get spot-free water, and get it inside the headlight (somehow, will have to be figured) and throw it in the oven. Turn the heat to 100 to 150, not too hot and have it evaporate too quickly. The goal here is to have it be really really fogged up, and have it hopefully take away the hard water spots when it does finally evaporate.

MORI3L

I have no clue....these headlights came to me like this from Germany...my best guess is that he was driving in some really cold weather with them with one of the caps loose(or completely off). I notice that there is debris inside the bottom of one of the headlights so this is definitely possible. Its not super bad.....but it is noticable against those HID AE's...and its going to be even more noticeable after the D2S retrofit.

sanjsanj

chuck a silca gel thingymajig you get in brand new sneakers or handbags in it, job done.