johnksss
the new word is it frost over...
just like eraser does.
Well if you think about it, it's not like it is insulating.

It is just an easier solution than eraser for keeping moisture off a board. If you want to control frost, it seems to me that closed-cell foam is the only thing, and the eraser or dragon skin or other solutions keeps what moisture appears off of components.
Or you could soak everything in Vaseline, and not worry about anything, lol.