Dentists' fears over High Street teeth whitening
14 February 2013 Last updated at 06:19 GMT
Dentists say they still have concerns about the safety of some teeth whitening procedures being offered.
That's despite new EU rules brought in last year to try to help control the industry.
The British Dental Association (BDA) claim the risk is increased if treatment is carried out away from a dental surgery.
Some private companies offering the service argue dentists are just trying to make money on a cosmetic process.