Sterimar Isotonic Spray is a 100% natural nasal hygiene solution made with sea water microdiffusion. This 100ml isotonic spray helps maintain daily nasal hygiene through gentle cleansing of the nasal passages using purified sea water. The isotonic formulation means it has the same salt concentration as the body's cells, making it gentle and suitable for regular daily use. The spray format allows for easy application and even distribution within the nasal cavity. As this is a nasal hygiene product, please follow usage instructions on the package.