Natural pigments or artificial colors that can build up over time and cause discoloration should be avoided in foods and beverages.
You don’t have to avoid these foods indefinitely. Because your teeth are most sensitive during the first few days after whitening, many dentists advise merely avoiding certain meals for around two days. These food and beverages are; coffee, tea, flavored sodas, red wine, berries, candy and chocolate. Try to eat foods that are white to sustain your new color, this is why sometimes food after a teeth whitening process is referred to as a white diet.