3. Defogging
To ensure a good shave after you bathe, pre-treat an area of the mirror with toothpaste (rub on, then wipe off) and then hit the shower. When you come out, the area you chose will be fog-free.

4. Goggles
The same principle as the bathroom mirror, a simple rubdown with toothpaste can keep your (or your kids’) goggles clear underwater, ensuring an increase in the speed of your workout and a decrease in your kids’ frustration.