7Dietary Changes
To whiten your teeth, it is important to eliminate foods that would stain them. Drinks and products containing tannins like tea or wine should be avoided. The same holds true for juices, dark sodas, dark berries, as well as coffee. Acidic foods would wear down the enamel over time and make your teeth become yellow. Therefore, you should limit the consumption of these products, especially citrus fruits. Alternatively, brush your teeth before eating them to avoid acidic effects.[6]
