Products Hypertonic saline solution (20--23 gr/l) made up of 100% natural seawater in spray format for nasal hygiene. Details A cold microfiltered hypertonic seawater solution, produced using the original protocol created by physiologist and biologist. It moistens the nasal mucous membrane and helps remove nasal discharge. The spray is recommended for pre- and post-operative nasal surgery use, severe cold and flu, allergic rhinitis (hay fever), rhinopharyngitis (common cold)and sinusitis.. Directions As this spray hydrates, flushes and clears out the upper airways, it is especially recommended for the prevention and treatment of the following conditions: Pre and post-operative nasal surgery. Flu-like sy…