Teeth whitening is a very common practice today and there are many different options to choose from. When it comes to whitening, there could also be some pitfalls to avoid. There was a study done in 2011 which showed that the use of very high percentage of hydrogen peroxide (35 per cent) resulted in reduction in the hardness of the enamel of your teeth. In another study done in 2005 they compared three types of whitening – Whitening strips, At Home Bleaching and In Office W