Tooth whitening or tooth bleaching is the process of lightning the colour of nature teeth. People often consider teeth Whitening when teeth become yellowed over time for a several reasons, and can be achieved by changing its colour of the tooth enamel. Whitening process eliminates teeth yellow and brown stains on the teeth, and can also brighten the dark colour of the teeth. This can be done by a dentist in the dental clinic or at home. With all the advances made in general dentistry to enhance the appearance of the teeth, whitening process is the easiest and effective. The whitening of teeth is safe and easy, and more affordable than ever before. Because of these reasons and more and more people are doing tooth whitening.