Listerine zero mouthwash is listerines new zero alcohol mouthwash powered by their 4 essential oils formula your mouth still receives a deep listerine clean but with a less intense taste specially formulated with a higher fluoride concentration listerine zero also restores weak spots before cavities begin to form used twice daily other benefits you can expect include killing more plaque bacteria than any other alcohol free daily mouthwash extra enamel protection even in hard to re