Very curious as I was doing some toothpaste shopping. I’ve recently started having sensitive teeth and would like to know if it works and how. Thank you
In: Biology
Desensitizing toothpaste has [Saltpeter AKA Potassium Nitrate](https://www.thoughtco.com/saltpeter-or-potassium-nitrate-608490) or a similar chemical compound that fills and blocks the microscopic pores in your teeth that allow cold or hot liquids to penetrate into your teeth where the nerves are.
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