I live in southeastern Virginia where sinus issues are common. I used to have lots of stuffy nose, sinus pressure (and associated headache), infections, all sorts of issues. Sinus Buster has made such a difference! I started using it several years ago and have had very few issues since. I use Airway regularly also, but at the first sign of stuffiness I switch to Sinus Buster in my diffuser overnight and it almost always stops it in its tracks.
A coworker that moved here from Maine was having a terrible time with sinus because of not being used to the humidity. I gave him a bottle of Sinus Buster and a small diffuser and in just about two weeks it cleared up what multiple trips to the clinic and multiple rounds of medication did not.
There are some Camp Wander blends I can't do without and this is definitely one of them!