Don’t eat or drink staining foods the first few days after whitening. Don’t smoke. Brush less frequently. Wait a few days before eating staining foods like tomatoes, tomato sauce, grape juice, or red and purple fruit.
Don’t drink carbonated beverages (i.e., soda) which break down enamel on your teeth and make them more porous. Soda and carbonated drinks are very acidic as are grapefruit juice, tomato juice and lemonade. If you can’t avoid these acidic foods, brush your teeth immediately after ingesting them.
Don’t forget to tell your dentist if you are allergic to peroxide, a common product used in tooth whitening products. Tooth whitening can cause a temporary increase in tooth sensitivity and mild irritation of the soft tissues. Don’t hesitate to let your dentist know if these issues last more than a few days.