Last year I bought new JDM headlights and nticed when I was washing the car the drivers side would fog up bad. Looked horrible. I pulled the bulb out and used my air compressor and blew lightly inside to get the moisture to evaporate. I couldnt get all of it to exit so I parked it in the hot sun and let it sit leaving the bulb out. After a few hours it looked completely dry. I made sure the rubber seal was clean and put the bulb back in. No issues since. Maybe I got lucky. All I know is the foggy look irritating.
