The nasal washer uses a certain pressure to send the normal saline into one nostril, and the saline flows through the nasal vestibule, paranasal sinuses and nasal passages around the nasopharynx and is discharged from the other nostril.

The function of saline in nasal cavity can accelerate the self-regulation of germs, such as the sterilization of nasal cavity, so as to restore the self-healing ability of nasal cilia.

The hand-held nose washer, which is washed by spray, is not as bad as the traditional nasal washer. It does not choke when it is used, it can breathe freely, the flow is mild, and it does not irritate the nasal cavity.