I have already done about six surgeries to breath better. Therefore, doing the wasing on a regular basis. My doctor suggested me to do it for every morning and evening before bed. So I'm doing it for years and it improved my quality of life.
Simply great if you suffer from hayfever or blocked sinuses. I used as I got an ear infection. This helped to keep my sinuses clear while I worked on the source of the sinus problem. My sinuses are now completely cleared.