Earthpaste, but the Sea Salt or xylitol may make you sensitive too. It's best to think very very simple. One or two ingredients. That's why I make my own earthpaste with Bentonite clay. When we brush, we are really just polishing our teeth. You can use the clay in dry form to brush, or add a bit of flavoring essential oil food grade safe of course. But start with just the clay, and see what happens in a week or two, then add ingredients slowly so you can identify an allergy if you have one. I do ok with Listerine Natural no fluoride. I take about 6 cell salts (they contain calcium fluoride) per day to get a natural safer fluoride this way. Sometimes, I will mix the Natural Listerine in the clay to make a thick minty paste, and I put just a small amount in the tip of a sandwich bag (like frosting) squeeze to the end, and tie a knot, then cut off the tip. This makes a fun wet paste. Just go slow!