I dunno about others but I need to keep my nose warm all night or I end up unconsciously putting my face inside my sleeping bag. Of course that gets a lot of moisture accumulated in the bag.
So I have taken to using a polyester fleece balaclava that covers my entire face except my eyes. Problem solved for the night. I the morning I “wash” off my balaclava’s nose/mouth area with snow and shake as much moisture off as possible,
In sub zero (F.) weather I use a Solar face mask that has layers of copper screen between fleece outer layers. This covers my mouth and nose and warms inhaled air B/C the screen are warmed by exhaled air. Works pretty well.
I absolutely wash the mask out with soap when I return home. Once I even dipped it into boiling water in camp after the 3rd day B/C I couldn’t stand the smell! That worked OK.







