Tooth whitening is the process by which the color of natural teeth is made whiter by the use of whitening products. Tooth lightening by gels is done by applying a carbamide peroxide gel or paste to the teeth; this gel is known as tooth-whitening gel.

Small in size and flexible, teeth whitening strips are coated with whitening bleach on one side. To use them, you place a strip on the upper teeth and another strip on the lower strip and leave them on for about half an hour. You apply the strips twice a day, ideally in the mornings and nights.

Tooth whitening by the use of gels is very effective because the gel works deep into the tooth to bring about the whiteness in considerably less time than other products. Other products whiten teeth on the outer layer in a short time, but the result may be temporary.

Children who are above two years of age can also use tooth-whitening gels. Since these gels contain no fluoride, the possibility of toxicity due to the swallowing of the gel is ruled out. Tooth-whitening gels function on the whitening effects of carbamide peroxide. This provides the vitamins C and E, and these ingredients stimulate the production of healthy mouth tissues and fight the germs that cause bad breath, without the aid of alcohol or other harmful ingredients.

Whitening teeth with the use of gels is the most popular cosmetic dental procedure because it can significantly improve the appearance of the teeth at much less cost and without the inconvenience of other techniques. This is also the reason why a good majority of dentists use tooth-whitening gels.