Rub it on the gums near an affected tooth...deadens the feeling almost immediately...go easy, it doesn't take much...and you might want to use a Q-tip to put it

Rub it on the gums near an affected tooth...deadens the feeling almost immediately...go easy, it doesn't take much...and you might want to use a Q-tip to put it precisely where you want it...it tends to "run out" or "swarm" if you're not careful...