A saline nasal spray is a mixture of sterile water and 0.9% sodium chloride (salt) that you can spray up your nostrils to flush out pollen, dust, and other allergens from your nasal passages (the ...

A Cochrane Systematic Review has concluded,Spraying salty water (saline) into your nose can help reduce the symptoms of pain and congestion that accompany long-term infections of the nasal passages.