How do you repair a Sable Taurus headlight that has moisture in it?

Answer 1

take the headlight assembly, and remove the light out of the car (if the bulb is halogen don't touch it use a glove as the oil on your hands will prematurely wear the light, take the light out of the assembly use something like a hair dryer and carefully blow the hot air into the assembly keeping the light socket hole upwards make sure you don't melt the assembly if you use a heat gun once the moisture is out replace the light and assembly

Answer 2

Remove the headlight lens assembly and point a hair drying into it for a while.

Getting the lens out is very easy - See "Related Questions" below for more specifics