I'm guessing maybe because most all of them contain drying-out ingredients like alcohol or witch hazel? Maybe that was the reason? Toms of Maine makes one sans witch hazel now so there's no drying out ingredient in it -- It's called Cool Peppermint wave or something like that.
Nomad said:
Ali, did he give you any reason why he doesn't like mouthwash? I've never trusted them fully because of ingredient lists I don't understand and I know alchol is bad. I have the Biotene and Act non alcohol with Flouride and they last me a loooong time because I use them very rarely.