People could be causing damage to their teeth by using home teeth-whitening products that are too harsh, an expert has claimed.
Dentist Dr Philip Stemmer tested a range of teeth-whitening equipment and found some cause for concern, the Daily Mail reports.
He said that while some products would do little more than help remove plaque, others, in their attempt to whiten your teeth, could in fact do more harm than good.
With more than 30 years of teeth-whitening experience, Dr Stemmer described how certain goods containing hydrogen peroxide could cause irritation to teeth, gums and the stomach lining if not applied correctly.
One kit available on the market contains pumice for scrubbing stains from teeth, although Dr Stemmer explained that this is too harsh for regular use.
Teeth whitening may be becoming increasingly popular among celebrities, with British socialite Peaches Geldof being the latest to be spotted with whiter teeth.