Rinsing with baby shampoo is the only thing that has ever long term helped my sinus inflammation. It’s been amazing.
https://www.nysinuscenter.com/2015/08/baby-shampoo-for-your-...
https://www.nysinuscenter.com/2015/08/baby-shampoo-for-your-...
A little web searching even turns up an NIH study. The abstract indicates promising results with the only likely downside being a possible case of minor irritation.
I use this irrigation bottle. https://www.amazon.com/Neilmed-Sinus-Rinse-Starter-packets/d...
A drop of J&J shampoo.
I rinse both nostrils while in the shower. Burns slightly. But after about a day, the irritation goes away and my sinuses feel much better.
I use to do this much more frequently, daily, but after a couple of weeks, I found it’s no longer needed as much.