Nasal irrigation using
NeilMed Sinus Rinse was recommended to me by a GP and then multiple ENTs. I was leery at first, but figured if it was recommended after surgery it would probably be safe for my mere allergies and low-grade sinus issues. I tried it and found it helpful so I continued for years.
You do it as
@shak8 describes, with boiled and cooled tap water, warmed again and with a sachet of stuff dissolved in it. You can also use distilled water. You're supposed to wash it in boiled and cooled or distilled water too and disinfect it every once in a while in the microwave. I found the cleaning challenging. I used to wash it in ordinary hot water with dish soap and then rinse in boiled and cooled water. That was the best I could do. I should have disinfected it, but I did not. I did replace the bottles as recommended.
When I was physically able to do it, I found it very helpful for allergies and colds. It prevented sinus infections for me which was a wonderful development.
It does not help me with nasal vestibulitis or whatever it is I get now, and it does not feel like a good idea to me to use it for that.
It's a lot of work and neither I nor my carers are able to do it now.
I had to stop using NeilMed NasoGel (recommended by ENT for nasal dryness) recently because it stank and it turns out a bunch of batches were recalled because of "microbial contamination", yikes. I'm using a Sterimar Nasal Spray instead (bought in bulk from Spain!) Ideally I need something thicker, but I do really like it. Tried a few before settling on this one.