Hope your mouth is strong enough for this product. This Cinna Mint may burn your mouth besides the proclaimed benefits. Ordered four bottles of this flavor when iherb was short on the Cool Mint flavor. Tears came out after about 25 seconds of rinse and swish. Whoever formulated this "Cinna Mint" has different intention in mind in compared with the "Cool Mint" flavor. Both flavors has the same ingredients listed on their labels, but Cinna Mint burns. It took more than a week for the mouth to heal. Tried again with 50% water and 50% Cinna Mint, and it "burned" the tongue after about 30 seconds. Other products such as Perio Brite Toothpaste, PerioWash "Cool Mint", and PerioRub( especially after burned by the Cinna Mint) are all user friendly products; but PerioWash "Cinna Mint" brings more pains than benefits. Well, this is a pure personal experience, and hope you are one of those people with 5 stars and a strong mouth for it. If you are not, PerioWash " Cool Mint" is a good choice, or you can try Biotene if "Cool Mint" is too strong,too. Anyway, hope you will find your dream mouthwash without too much pain and unpleasant experience.