After getting your teeth whitened, you should avoid these foods:
a. Acidic foods: Avoid foods such as citrus fruits like oranges, lemons, grapefruits, pineapples, tomatoes, pickled or food with pickle ingredients and processed meats.
b. Dark-coloured beverages: Do not drink tea, coffee, sodas, or grape juice. These drinks are the primary reason for stains and yellowing of your teeth. If you cannot avoid or resist such drinks, it is best to use a straw and rinse your mouth immediately afterwards to minimise the damage.