Mouthwash

Ever taken a swig of mouthwash only to find your breath needs to be freshened up again within a few hours? Alcohol-based mouthwashes disrupt your mouth’s microbiome, causing worse breath in the long run, and have even been linked to mouth cancer.

Non-alcohol alternatives contain propylene glycol instead, an ingredient better known as antifreeze. Add in the widely debated effects of fluoride, and you’ve got a recipe for disaster. A clean diet and fluoride-free toothpaste are a far safer bet for fresh breath.