Sinomarin Sea Water Solution for Adults contains naturally very rock salt and trace elements concentrated sea water. It thus ensures an optimum nose washing, by getting it rid of the mucosities which can encumber it, while associating a decongestant natural direct osmotic aciton, through its super-toning property.The nasal spray botle conditionning with anatomic nozzle allows a completely safe use suitable in all positions.Preservative-free.