Yes and no. A slurry of hydrogen peroxide and baking soda brushed an the teeth twice daily can lighten your teeth superficially and help to remove surface staining. But don't expect a dramatic change. If you want that hollywood white smile you can't go wtong with professional whitening from a dentists office. Make sure that your teeth and gums are healthy prior to getting this done.
Sort of. Hydrogen peroxide is the original basis for the newer whitening agents, and they are a lot safer than hydrogen peroxide. Hydrogen peroxide should only be used sparingly and on a limited basis in the mouth due to its powerful oxidizing capabilities. It has the potential to affect normal tissues and cause them to change, and sometimes not for the better.