Have you ever done the tissue test, where you hold up a piece of pristine white tissue paper next to your teeth to see the color difference? If you're like most people, the results are disheartening: stained, dull, yellow teeth — a far cry from the bright whiteness of the tissue. Luckily, whitening your teeth doesn't have to be a big ordeal. There are plenty of do-it-yourself natural teeth whitening options, including herbs, activated charcoal, and more. Plus, these methods are inexpensive and safe — unlike professional teeth whitening services […]