The main active ingredients are a hypertonic solution of sea salt, eucalyptus and star anise essential oil. The most common symptoms of a cold are swollen nasal mucosa or a blocked up nose. The hypertonic solution of sea salt helps reduce swelling in the nasal mucosa - the difference in salt concentrations between the nasal spray and the mucosa means an osmotic gradient is formed. Excess water from the nasal mucosa passes into the more concentrated salt solution in the nasal passage and the patient then blows it out. The mixture of various minerals of marine origin, which has a beneficial effect on the nasal mucosa, also plays a role.
Eucalyptus and star anise essential oilshave a refreshing aroma, thus contributing to the pleasant feeling after using the spray. Eucalyptus essential oil has antiseptic effects. Star anise essential oil with antibacterial and antiviral effects also helps to alleviate a cold and shorten its duration.