Can I drink coffee while whitening teeth?

No, it is best to avoid tea and coffee or any colored fluid that may stain the teeth after whitening. If you must you could drink coffee using a straw. In addition it is best to avoid drinking too hot or too cold fluids that can cause changes in the teeth and allow the stains to penetrate. The teeth absorbs colors most in the first 3 days after whitening that ultimately harden and become permanent.