Got canker sores? Just wet your finger and dip it in this spice (found in any store in the spice section) and put it on the sore. Let the alum sit in your mouth for 3-5 min (yes it will sting a little) and it's dead. The pain will stop. Depending on the size it may take once or twice to get rid of it. But it works!
How To Naturally Get Rid of Canker Sores In Minutes With No Medicine