As strange as it may sound, brushing with a readily available black powder can help polish and whiten your teeth - all without harsh chemicals. To be honest, I was doubtful this homemade toothpaste would really work, but was curious enough to give it a go. The results were surprising.
After a bit of research, I discovered that activated charcoal is an astonishing magnet for anything from poisons to bacteria to stains on your teeth. Apparently, activated charcoal absorbs and encapsulates harmful substances, then safely escorts it out of the system without risk of absorption. This is why hospitals keep a hearty supply of the stuff on hand for poisoning victims.