Post by sizzling07 on Dec 1, 2011 6:20:47 GMT -5
Teeth whitening systems for use at home, including a teeth whitening pen, will all include a certain percentage of hydrogen peroxide. The peroxide acts as the active ingredient, bleaching surface stains on teeth while not causing any damage to the enamel. A higher percentage of peroxide in the teeth whitening pen will help the whitening to take place faster, and will generally create more noticeable results than teeth whitening systems with lower concentrations of peroxide.