Antiseptic: Listerine works based on the 'essential oils' it contains. These essential oils act as an antiseptic to kill off the bacteria in the mouth that cause tooth decay and gum disease. Listening is a good product, but it should be used in addition to brushing, not instead of brushing. Also, smokers should use an alcohol-free listerine if that is the brand of mouthwash they choose.
Answered 12/11/2018
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