One of the most important rules of teeth whitening is being careful about what you eat or drink immediately after a bleaching session.  Dark liquids and foods should be avoided for the first few days after whitening. Here are some of the most common ones to steer clear of.  Tomato sauces and curry Soda Tea Red wine Coffee Dark berries (blueberries, blackberries, etc.) When you go back to indulging on these types of items, you may want to keep a toothbrush handy. Brushing immediately afterwards can help to limit new stains from building up. If a toothbrush isn’t available, rinsing with water is also helpful. If you can, drink dark liquids through a straw to limit the contact time that they have with your enamel.  Even if you avoid these for several days after whitening, it’s important to know that going back to them at any point will encourage new stain accumulation. Of course, most of us are not willing to give up our coffee for good, so just be sure to take a break for a few days when your teeth are freshly whitened (and more porous.)