Having teeth whitening treatment has been compared to getting a facial by one actress who is a fan.
Amanda Peet, star of films such as disaster epic 2012, told Bella Sugar that having a really "stainless smile" is a more important part of the beauty process than most people give it credit for.
She explained that she has gentle teeth whitening treatment about once every three months, or whenever she is getting ready for a big event.
"If you have a date coming up or you have an event or pictures or wedding or something like that, it's a great tool to use at the last minute," Peet remarked.
People who want brighter teeth might want to avoid DIY strips after Daily Mail writer Anna Maxted described how they damaged her enamel and made her gums recede.
She had been overusing products with dangerously high chemical levels for a long period of time.