Search: how does nasal sprays work
Why: I have been sick for upwards of a week. At first it was just a chesty cough, but during my ski vacation this past weekend, it went up into my sinuses, face, ears, and head. I have some Walgreens brand generic nostril spray that seems to help.
Answer: Decongestant sprays (like the one I have) constrict blood vessels in the lining of your nose! This decreases swelling. But! The thing is! that after 3 days, your nosey gets used to them. Then, not only does the spray stop doing what it's supposed to do, but your nose vessels start swelling like crazy, even worse than before. So don't do it for more than 3 days!
Source: AnswerBag, WebMD
The More You Know: The other kind of nasal spray is just saline, and you can use it all you want. It moisturizes to prevent crustiness, loosen mucus, and relieve congestion. Maybe I need some of that (in addition to my 3-times-a-day decongestant cocktail).