Another option is just hydroxyapatite without the nano (sometimes nano particles end up having their own safety issues). A higher hydroxyapatite concentration m

Another option is just hydroxyapatite without the nano (sometimes nano particles end up having their own safety issues). A higher hydroxyapatite concentration might work almost as well. Kinder Karex is such a toothpaste. https://www.consumerlab.com/answers/finding-the-best-toothpaste/toothpaste-ingredients/ https://www.consumerlab.com/answers/finding-the-best-toothpa...