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 fre

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.