Product Overview: Kin Sensi Potassium Nitrate Fluoride Gel Provides Immediate Relief From Tooth Sensitivity. Its Advanced Formula Combines Potassium Nitrate To Soothe Sensitive Teeth And Fluoride To Strengthen Enamel Key Features: ‣ Mint Flavor For A Refreshing Aftertaste ‣ Compact Size For Easy, Targeted Application ‣ Designed For Daily Relief Of Tooth Sensitivity