Otosan nasal spray is the result of the latestmedical scientific research it is an essential remedy for symptom of seasonal colds or allergies rhinitis sinusitis external irritant agents pollen acarus dust etc post surgery otosan nasal spray deeply cleanses the nasal cavities helps reduce congestion provides relief and prevents relapse free from vasoconstrictors it does not cause any rebound effect or addiction decongestant effect and deep cleaning of nasal cavities deeply clean