Well your nose hairs go quite a ways up your nose. The trimmer isn't very long and I don't jam the thing up my nose and shove it around. I trim maybe 1/2 or 3/4" of an inch up from the opening. Just enough to get all the long hairs that grow out past the opening.doesnt the hair in your nose catch particles that arent supposed to go in your nose and then out they go with a sneeze or something?