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by jdswain 1522 days ago
Some people have problems with sodium lauryl sulfate. In toothpaste it gives me mouth ulcers, and in soap I get skin irritation. It’s quite hard to find SLS free toothpaste, or even shampoo, but it could be worth trying if you have unexplained skin irritation. I haven’t had one ulcer since swapping toothpaste and before that I was getting them all the time.