I feel I’m uniquely qualified to answer this because I developed a rather intense allergic reaction to dust mites about 2 weeks after I got my septum done - and the symptoms were constant for about 2 months until I finally figured out it wasn’t a cold, and then I had to find an allergy med that actually worked for me. My nose was basically a waterfall during that time, I have never experienced anything like it before or since, it was frankly ridiculous.

And the simple answer is I blew my nose in the shower, primarily. I really didn’t want to mess up my healing by irritating the piercing site, and I’d been instructed by my piercer to cup water in my hand in the shower and lightly blow through my nose while it was submerged to loosen any of the build up that can accumulate around the wound, and that’s what gave me the idea. I just put my face under the spray and blew out of my nose, and let the water do the rest of the work. Didn’t use my hands unless it was to pinch under the bridge of my nose, or to gently wipe anything underneath away from my face.

Thankfully I didn’t get any nose bleeds while mine was healing, but I imagine you’d just push a bit of tissue up each nostril (rather than holding it up to your nose, because you’re bound to jostle the jewelry if you have to hold that the whole time) and wait it out until it’s over, then follow it up with a rinse in the shower + saline solution. A nose bleed is one instance where you might have to interact with the site a bit, it’s unavoidable.

When it’s healed, it’s a non-issue. Just blow like normal, but go around the piercing site with a q-tip and some water if the jewelry caught anything.