How Teeth Whitening is Done Free PLR Article At-Home Teeth Whitening - First you need to go for tray fitting where a customized impression is made of your upper and lower teeth. Then, for a few hours everyday, you need to wear these Then, in another somewhat similar process, a teeth whitening gel made from diluted hydrogen-peroxide is applied to your teeth. Then a blue light, called BriteSmile, is shone on it to whiten the teeth. In another process, you can whiten your teeth more sensitive for a couple of days... How Teeth Whitening is Done Free PLR Articles ...