It's a pesky problem: As soon as you strap on your cloth face mask and head out the door, your glasses fog up.

But there are two simple ways to fix that using household items, and they'll only take a minute or two. All you need is a bar of soap or shaving cream.

This advice comes from the medical journal Annals of the Royal College of Surgeons of England. And if their defogging trick can work in the emergency room, it can certainly work in the grocery store.

Your specs fog up because the mask directs your breath upward instead of in front of you, which is good for preventing disease transmission but bad for anyone with less-than-stellar eyesight.