Results do vary depending on each person. Your use of the teeth whitener, your genetic makeup, how stained your teeth are and the cause of your teeth stains are big factors on the level of results. For medicinal products, content on our website is not intended to be used to diagnose, treat, cure, or prevent any disease or health condition or to substitute advice given by medical practitioners, pharmacists or other licensed health care professionals. You should contact your health care provider immediately if you suspect that you have a medical problem.