Do your mirrors fog up after a long, hot shower? Your eyeglasses, too? If you’re tired of operating in the dark, even when your bathroom’s sunny and bright, here's a way you can stop fog in its tracks. Shaving cream combats fog and keeps it off glass surfaces. Just rub some on your mirrors and eyeglasses, shower doors and windows -- and then wipe them clean. An application of shaving cream will keep them fog-free for several weeks. And that's the On The House tip for today.