POTASSIUM NITRATE is graded A** (Safe) by Expert·ING, based on COSING, FDA regulatory data.

POTASSIUM NITRATE

Safety grade: A**

Potassium nitrate is a naturally occurring mineral salt that has been used for centuries in various applications. In oral care products, it works to reduce tooth sensitivity and soothe irritated gums.

This ingredient is used in toothpastes and mouthwashes to desensitize teeth by blocking sensation transmission and to provide a soothing, calming effect on sensitive oral tissues.

Graded using: COSING, FDA.

Last verified: May 26, 2026