Daily Life

Khloe Kardashian has become an influential endorser of teeth-whitening products.

Do the latest trending teeth whitening products actually work?

I first noticed it in my Instagram feed; women – and men – were holding a strange, circular device between their lips, like a futuristic mouth guard. A device that emitted a blue light. There were others who posed with a mouthful of charcoal, brushing it all over their teeth, and turning their mouths the colour of soot. If the mouth guard was the future then charcoal was decidedly medieval.