Listerine Zero Mouthwash Listerine Zero Mouthwash provides the deep clean you expect from Listerine but with no alcohol & a less intense mild mint taste. Used twice daily Listerine Zero Mouthwash is proven to: Protect enamel, even in hard to reach places. Maintain healthy gums, killing germs above & below the gum line. Provide lasting fresh breath confidence for up to 24 hours. Kill bacteria
- no other daily use alcohol-free mouthwash kills more plaque bacteria.