1. Wash your hands Before you start, use soap and warm water to avoid causing unwanted nasal infections. 2.Make a mild salt water solution Mix 1 to 2 tablespoons of salt into a few cups of warm water. There is no need to follow a strict ratio, as long as the salt is not excessive and does not irritate the nose. Because salt water is weakly acidic, it can act as an antibacterial agent while moisturizing the mucous membrane of the nasal cavity. So cleansing the nasal passages achieves two purposes: flushing out any obstructive dirt and neutralizing any residual bacteria Use filtered or distilled water. The purer the water. The better the saline solution that is made. If you feel unsure, you can boil the water first. Heat the water to the proper temperature. Too cold and too hot will make the nose feel uncomfortable, the degree of warmth is most appropriate. 3.Pour saline into the nasal cavity There are two methods. You can choose according to your personal needs. Inhale the saline. Scoop some salt water with the palm of your hand, bend down in front of the sink, face down, and inhale the solution into your nostrils, with the salt water exhaled from your mouth. Use a nasal rinse. Fill the irrigator with salt water, then bend down in front of the sink, face down, turn your head sideways and use the irrigator to introduce the salt water into the top of your nostrils and out the bottom of your nostrils. 4. Repeat irrigation two or three times a week Regular nasal cleaning can relieve habitual nasal blockage and reduce the dependence of nasal allergy-prone people on steroid-based nasal sprays.