Youtube has some decent videos on electrolysis. This woman has quite a few, and she talks about treating the nostril area in this one:
Watching a bit of this reminds me of how much the nostril hairs HURT for me…I don’t see them at all so I just tell the electrologist to not bother with em, I don’t wana even try! 
I’ve seen all of this woman’s video’s. I am left wondering if she actually sits down when she removes hair from any facial or body part. If she doesn’t, OMG!
She is correct about the numbing part. It helps tremendously if the 5% lidocaine, for example, is left on the area THICKLY for an hour to 1.5 hours as this area is a real BEEEEE- OOOOCH!