Basically, in the early 1900's, a researcher discovered that a cremated human body was made from 12 components. And those 12 are put into tissue salts.
My diet is the best I can make it, along with my lifestyle, I take lots of supplements, but I find tissue salts is the big repairer of enamel on my teeth.
(I lost enamel when my saliva PH went down to 4.8).