Over-the-counter or at-home whitening treatments like whitening strips, toothpaste, lights, rinses, and toothbrushes can be found at your local drugstore and are often affordable options. However, since they are not done under the supervision of a dental professional, you put yourself at risk of harming your tooth enamel, the protective layering prevents your teeth from becoming overly sensitive. While most options are safe, they contain minimal amounts of peroxide- the main whitening agent. Professional teeth whitening uses stronger formulas that whiten teeth faster. Protective measures are taken to prevent the solution from harming your gums, which can lead to increased teeth sensitivity.