Question: how to whiten teeth overnight?
Answer: Using Baking Soda. Baking soda has natural teeth whitening property. ...  Using Activated Charcoal. Activated charcoal binds with any material it contacts. ...  Using Hydrogen Peroxide. Naturally, hydrogen peroxide is a bleaching agent and can kill bacteria in your mouth. ...  Using Apple Cider Vinegar. ...  Using Fruits and Vegetables.