Do These 3 Natural Teeth Whiteners Really Work?

Confidently flashing a smile can indicate confidence and friendliness, and make a strong first impression. So it's totally normal to chase whiter, brighter teeth by turning to a professional for treatments or reaching for a package of whitener at the drugstore. But for those of us who prefer to take a more holistic (and often less expensive) approach to our well-being, are natural whitening methods -- like oil pulling and drinking apple cider vinegar -- actually legit or merely old wives' remedi...