I'm not concerned about fixing it rather drying it up as i'm selling this car, it happened when I was clay baring it. Constantly soaking water and cleaner to lube the clay as I did the hood and then power washed the car. There's only one little opening the size of a h1 bulb it's lessened since I gave it some air but I need something faster, a hair dryer?.

 

Try a heat gun or blow dryer, mask off the surrounding paint with tape before hitting it with any heat. Worth a shot.

 

Hair dryer would work if you were blowing the air in from behind. Dont use a heat gun. Not sure if it'll work too quickly blowing the lens area. Taking the car for a nice drive or letting it sit in the daytime sun should dry the condensation easily.

 

Airing it out in the warm garage worked/driving it without the bulb, hair dryer was dubious just cause of the narrow slot.