the paste has a unique formulation minerals penetrate deeply into the enamel surface, effectively strengthening and hardening it make the enamel stronger, healthier and better protected against the damaging effects of acids from the daily diet protects teeth against the damaging effects of acids restores the natural whiteness of the teeth effectively cleans freshens breath contains fluoride to protect against tooth decay helps keep teeth and gums healthy also suitable for people with sensitive teeth contains sodium fluoride 0.315% (1450 ppm fluoride) and potassium nitrate 5%.