A technique called saline irrigation can help people with chronic nasal and sinus conditions....CLICK & SEE
Researchers tested saline sprays (which squirt saline solution into the nostrils) against saline irrigation, a more rigorous nasal cleaning process. Patients using saline irrigation were much less stuffy and congested than those treated with saline spray.
Saline irrigation probably works by thinning mucus, decreasing swelling in the nasal passages and removing debris, bacteria, allergens and inflammatory substances from your nose.
Sources:
LA Times November 26, 2007
University of Michigan Health System, Nasal Irrigation Patient Education and Guideline