In the present day and age, teeth whitening kits are easily available in the markets and these have become a rage in every second household. However, the whitening procedure, which dentists follow, is certainly much more effective than the teeth whitening kits. In order to remove the stains from the teeth, the dentist makes us of laser light, which is mixed with a subsequent quantity of peroxide. This restores the natural whiteness in teeth, and the process hardly lasts an hour. Though the duration of the process is totally dependent on the nature of the stains on the teeth, it is readily doable to have 2-5 shades of whitening through this process.