"Color bleeding happens when dyes in clothes ... based bleach and cold water for at least eight hours," he says. "Check the colorfastness of your garment first to make sure it’s safe to bleach.

A check mark. It indicates that the ... If this happens, you'll experience bleeding, typically dark red or almost black in color, though the amount of blood will depend on the size of the area ...

According to Klokkevold, you may be able to spot a build-up of calculus if it's attached to the tooth, yellow in color ... to bleed. Make sure you're keeping up with your regular dental check ...