Our physiologic seawater nasal spray contains saline.It immediately penetrates the nasal cavity, washes away bacteria and pathogens, passes the nose and cleans the nasal environment.It is easy to use: open the protective cover of the spray dust cap, your head slightly tilted back, gently press the nozzle; wipe off nasal secretions with a tissue, wipe the nozzle with a tissue and cover the dust cap.It can clean the nasal cavity in all directions, relieve nasal congestion and other symptoms, and relieve nasal discomfort.