There are two techniques: swishing it all around your mouth, or mixing it with baking soda and placing it on the teeth like a paste in advance of rinsing. Can you employ apple cider vinegar to generate teeth white overnight? There is no evidence that apple cider vinegar works https://onelifesocial.com/story2281588/helping-the-others-realize-the-advantages-of-natural-teeth-whitening-remedies-with-salt