Clean your nose thoroughly with a warm, wet washcloth before you use the trimmer.
It might also be a good idea to blow your nose, too, to reduce the sneezing reflex as you cut your nose hairs.
Insert the Nose hair trimmer at the entry of your nostrils and turn it on. Start with the lower hairs first, and trim to the point where your nose air is no longer easily visible when you look straight ahead.
Clean your hair trimmer after each use.
Turn off the tool and empty the hair from the small collection area on the top of the trimmer using the brush included. Tap the container on the edge of a waste can. Then, give the piece a rinse under hot running water. Let it to airdry.