STERIMAR Blocked Nose is a medical device recommended for children from 3 years old and adults in case of colds, rhinitis, acute or chronic sinusitis to: Quickly decongest the nasal mucosa, Eliminate even thick mucus, Help to fight colds, sinusitis and limit the risks of secondary infection by washing out nasal cavities*, Prevent flu infection**, Improve the effectiveness of local medicated treatments to reduce intake.