^^^^^^^^^^ like we said bake it and just remove the hig ballast because you will fry it. I did this in my is300. Its easy but just time consuming.

 

Like other people said, most likely the headlamp needs to be resealed. Or there is a leak where moisture can get in somewhere.

 

I live in Vegas so no rain and i havent washed it in weeks,tryin to figure out how it keeps getting moisture inside

 

I noticed this on mine once and have not seen it since. I dont think Lexus is going to play nice and replace mine. Im in AZ so , like you, was thinking WTF !?!

 

Condensation could form due to the temperature inside the headlight vs outside the headlight, especially due to the heat caused by the hid bulb. That would more than likely happen if the headlight was not sealed correctly.

 

Maybe a bag of desiccant inside the headlight housing would help?