This. My wife suffered with ulcers all her life until a comment on the NHS website suggested cutting out SLS. She followed the advice and very quickly stopped

This. My wife suffered with ulcers all her life until a comment on the NHS website suggested cutting out SLS. She followed the advice and very quickly stopped getting ulcers. I mentioned it in passing to our dentist and he said he won't use a products with SLS in for himself or his family ...