• We often witness the stains over teeth or discolouring of teeth amongst our own family members and friends. Teeth whitening help in removing such stains from the teeth or for bringing back the whiteness in the teeth. Being one of the most needed and demanded cosmetic procedure, in relation to dental region, it is very common to be seen being performed by almost every dentist, and is repeated with passage of time to maintain the brightness teeth whitening reviews • Usage of tobacco products, consumption of dark coloured liquids and improper care of teeth, such as no regular brushing or not using mouth-wash after eating or drinking, etc. are the basic reasons which leads to the formation of stains, generally seen yellow in colour, over the teeth. • This stain is basically a thin layer of pellicle which is formed on the daily basis over the topmost layer of teeth, also known as enamel. Enamel is responsible for reflecting the light and gives the natural white colour to the teeth, which we see with the naked eye. In due course of time, if the said pellicle is not removed from the enamel by proper brushing, then it forms a stiff layer over the teeth, obstructing the reflection of light by the enamel and hence the colour of the pellicle, the coating above the teeth becomes prominent and discolours the teeth. • By the process of teeth whitening, the dentists try to remove the said layer of pellicle from the enamel in order to create the reflection which in turns leads to showing whiter and brighter teeth. • The risks which are generally witnessed after whitening are increase in sensitiveness and irritation in the gums, which lasts not more than couple of days. Although it is not serious in nature, but one needs to take precaution after the process is done for lesser risk.