We’re sure you’ve seen enough toothpaste adverts and listened to us lot banging on about fluoride to know it has a role in fighting tooth decay. But what exactly is fluoride, and is it really that important in maintaining healthy teeth?

Recently, charcoal toothpastes have gained popularity. They promise to remove stains and brighten your smile with regular use. Celebrities like Kendal Jenner are getting in on the act by teaming up with oral-care brands and using social media to promote their black-as-the-night, activated charcoal toothpastes.