This physiological saline is intended for washing the nasal passages of babies, children and adults. For daily hygiene of the stuffy nose of babies, who cannot blow their nose and clear nasal secretions and mucus by themselves, to prevent upper respiratory tract infections and promote better breathing. For the adjuvant treatment of ENT pathologies in order to favour their relief and avoid over-infection, eliminating excess mucus, whether or not they are infected, microbial agents, foreign bodies, allergens, etc. As an ophthalmological treatment, the serum is intended for babies, children and adults for washing the eyelids and corner of the eye as part of daily hygiene. Washing the eye in case of discomfort related to the presence of dust. Also as an adjunct to the treatment of conjunctivitis.