Tooth whitening is an multibillion-dollar industry ... This article was originally published on mentalfloss.com as How Do Teeth Whiteners Work?.

How do they work, you may ask ... but there's not a lot of science behind it effectively whitening teeth either. However, it ...

At home teeth whitening kits are easily available to buy online. They work by bleaching your teeth to make them lighter in colour. However, there can be risks involved, Dr Smita Mehra, BDS ...