It actually wasn't marketed for bad breath until the 1970s!" And with so many helpful ingredients in Listerine — such as thyme, eucalyptus, and alcohol — it's no wonder this product is being used in ...

Is Listerine safe on the skin? There are essential oils in Listerine that can irritate your skin if you have sensitive skin. Check the ingredients for any known allergies you have.

Listerine may not directly cause bacterial ... It is, instead, likely used as a preservative and carrier for the other active ingredients in the mouthwash, as per sources. But the alcohol content ...