Ok so you inhale a dark powder into your nose.
What do you do later.?
Do you blow your nose.? Yes Suck the secretions out the other way.? Yes
Irrigate with water.? Yes Use a Saline Nasal Spray. Yes
I'm really curious what I should be doing to clean that stuff out and when.
And go ahead and pick as well tom. Discreetly mind, but hey, snuff boogers bounce
Yes to all the above.
You do want to keep your nose clean and moist. Chlorinated water will tend to dry the nose out so use that sparingly.
Your nose and body chemistry is going to be different from others so no hard fast rules. You will also find that you'll need to vary whatever steps you employ depending on the snuff you are using and the weather.
Weather, either cold or hot, that is very low humidity, will make your nose dry. Some snuffs will clog your nose faster than others.
You'll determine that as you go.
I personally pick and blows as needs be. If I've been using, something like a Scotch perhaps, for awhile, I find the inside of the nose is coated. Not heavily, but there is nothing to pick or blow and I can no longer absorb a fresh pinch. When that happens I like to use a snuff that's mentholated. Makes the sinuses run, give me something to blow! Start all over again.
Keep it clean and moist, main thing.