Zoom from Philips is one of the famous brands in teeth whitening. They offer both “at home bleach” and “in office bleach”. The home bleaching material are 6% hydrogen peroxide and are chemically activated at the time of use. The office bleaching material are 25% and need a special UV light to activate them. Due to high concentration of office whitening material a dentist needs to insulate cheek, lips and gum to prevent any burning and damage.