It's blue, it is peppermint and does not taste bad. It appears to freshen my breath. I soaked my mouth guard in it and it gave the mouth guard a nice minty flavor too. I have no idea if it actually kills germs or prevents gingivitis. Same as the 12 hour protection and plaque reduction, no one has complained about my breath since I have used it but no one complained before I used it either. Plaque reduction probably is a very long term thing but one can only hope. I like it better then the 800 pound listerine gorilla. · 12 hour protection · Alcohol free · ...