Teeth whitening is the common term under which teeth bleaching is one among other processes. The process of teeth whitening consists of physical removal of stains using abrasive agents.These agents can be toothpaste, or bleaching agent which contain chemicals that penetrate the enamel and dentine. Some agents contain peroxide which removes the appearance of stain through redox chemical reaction. Hence the teeth appear brighter. A trained Dental expert can administer quality whitening with safety.