‘I had canker sores regularly my whole life’: Expert says Crest toothpaste causes canker sores

If you've been periodically rocking canker sores on your inner lips, then it might have to do with the kind of toothpaste you're using.

Yes, it seems unfair that you, being a responsible oral caregiver, would be punished with an inner mouth lesion just for doing your due mouth-cleaning diligence.

However, TikTok account Twice Oral Wellness (@twiceoralwellness) accused toothpaste manufacturers, like Crest, of knowingly putting a detergent in its products that are linked to canker sores.