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A member asked:
Why does alum help canker sore?
2 doctors weighed in across 2 answers
It can: Alum placed on canker sore can make them less painful and heal a little faster. Some people are sensitive to the sodium laurryl sulfate or sls in toothpaste and have fewer outbreaks once they change toothpastes.
Answered 2/15/2016
4.8k views
Thank
Alum for canker sore: The best home remedy for canker sore is to put a chip of alum on top of the sore. Alum removes the moisture from the ulcer and promotes the healing.
Answered 3/9/2018
3.8k views
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