I suffer from sore gums. I see the dentist every 6 months, they have confirmed I do not have gum disease! I struggle using shower gels containing SLS, so I figured I'd try an SLS free toothpaste and see if that was causing the problems. Very hard to find one that has no SLS, no harsh whitening ingredients and that does contain fluoride. Until I found Zing toothpaste. My teeth feel clean and are whiter than before, also my sore gums are no longer sore. Wish I'd of found Zing sooner.