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ELI5: Can you or cant you rebuild and/or strengthen tooth enamel? 10 years ago this was impossible now every oral health company claims it with use of their products.(r/explainlikeimfive)
Here in the Netherlands they are available in supermarkets. They have advertisments on TV promoting it (so it’s not seen as a medical product at all, for which it’s illegal to advertise here).
I don’t know if they are particularly popular, but they are somewhat well known. I’ve heard two people say it helped and nobody that it didn’t, but that’s more anecdotal evidence (after all, it’s a sample of 2 and there are people who think homeopathics work so you can’t even trust those 2).
Edit: this toothpaste with Novamin can be bought in the US on Amazon (just make sure to pick a seller that ships from the EU).