i have had success with nasal irrigation with a salt water solution that i have added goldenseal to. you don't need much goldenseal and it isn't always a pleasant experience, but - wow! - afterwards my nasal passages always feel fantastically clean and clear.
i did a cayenne nasal irrigation once too - hahaha! i think the cayenne went into my brain or something! thats only for the really brave and adventurous. you really only need a VERY small amount of hte cayenne to feel it. i don't necessarily recommend it for the average person.