As a result, DIY home kits, including teeth whitening strips, cannot be sold at the same strength as professionals would use. This means they will be less effective, or require a more frequent use to achieve the same results. This, in turn, could lead to gum irritation and sensitive teeth.
Incorrect use or overuse of bleach could also damage the enamel, which is why these treatments should be avoided, even if they appear cheaper than professional treatment. Legally, in the UK, teeth whitening products which contain or release between 0.1 and 6 percent hydrogen peroxide cannot be sold to anyone outside the dental profession.
No. New legislation was introduced at the end of 2012 that means that teeth whitening must only be performed after a clinical examination by a qualified dentist.
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