Now, test it by exposing them to steam and see if it will fog up.
In this video tutorial, the toothpaste worked really well in preventing the glass from fogging up.
you could do this technique with any glass or window.
Image credit: ChrisFix via YouTube
This works because the toothpaste creates a protective layer that prevents fog from building up that easily.
*Thanks toChrisFixvia YouTube for all images used here.
How To Prevent Windows From Fogging Up
