HUMER Severely Blocked Nose Sinusitis Cold is a hypertonic solution containing glycerol and plant extracts. The spray is used in case of strong nasal congestion during sinusitis, cold or rhinopharyngitis. It quickly unblocks the nose, thus relieving pressure on the sinuses as well as the associated pain. The hypertonic solution enriched with plant extracts loosens the nasal secretions and facilitates the elimination of the bacteria and viruses.