Remineralizing Toothpastes In The Uk Dentin - Remineralizing Pastes Claim They Can Harden It But How Do They Get To It Through The Enamel?

Dentin - remineralizing pastes claim they can harden it but how do they get to it through the enamel? - remineralizing toothpastes in the uk

Are these toothpastes with ACP countries and other NovaMin penetrate the nail, then the dentin? Even toothpaste for sensitive teeth, say block tubules, but as they pass through the enamel - the hardest substance in the body?