Mouthwashes
Applying salt, hydrogen peroxide [7] or even baking soda directly to the lesion is a bad choice. But there are remedies that can be made at home that improve the pain caused by canker sore. Mouthwashes or tea with propolis and aloe vera help to relieve a lot of discomfort. The important thing is to make sure that the formulation does not contain alcohol. Mouthwashes can be easily done, with a solution made with a spoon of milk of magnesia [8] or baking soda diluted in a glass of water. Another alternative is to dilute a little of hydrogen peroxide 10 volumes in water and apply with a cotton swab directly to the cold sore.
In any case, the main recommendation is that no aggressive solution be placed that could cause burning in the place. It is also important to pay attention to the choice of mouthwash, which should not contain alcohol. Therefore, before applying any doubtful home measure, seek professional advice.