Yeah good point. My concern was that leaving it on my teeth all night would erode the teeth somehow. However, it looks like they did a study about that concern:

Yeah good point. My concern was that leaving it on my teeth all night would erode the teeth somehow. However, it looks like they did a study about that concern: https://www.listerineprofessional.co.uk/safety-profile/pH https://www.listerineprofessional.co.uk/safety-profile/pH