According to statistics, in 2015, Americans spent more than 11 billion dollars on teeth whitening as well as additional 1.4 billion dollars on at-home whitening products. When it comes to teeth whitening, there is a vast variety of products that we can choose from. Unfortunately, over-the-counter teeth whitening products contain harmful chemicals.
Yellow teeth can be caused by numerous reasons. For example, specific foods can stain the enamel, i.e. the outer layer of the teeth. Also, build up of plaque increases the risk of the teeth going yellow. Often, the teeth can become yellow if the hard enamel has eroded away and the dentin underneath is revealed. Dentin is a naturally yellow and bony tissue which is located underneath the enamel.
How to Whiten the Teeth without Being Exposed to Chemicals