Sterimar allergy and hayfever range of solutions are from prevention to fast and effective relief from symptoms. Sterimar Stop & Protect Allergy Response is a moderately hypertonic solution, made of filtered 100 percent natural and preservative free sea water which is rich in marine trace elements and contains added calcium and manganese. A solution with a salt concentration which is moderately greater than the salt content of the cells in bodies, making it possible to naturally and actively decongest the nose.