I found out that I have really bad allergies in my late 20s and was told to start using this once a day, every day by my doctor. It did take about 10 days of use to really impact my life but what an impact. I can breath through my nose! I have not gotten a sinus infection in the 4 years I have used it. My allergies have been drastically reduced.
I recommend this to people all the time, and it has really been a life changer for me.