Precautions:
1. Salt should be pure salt without iodine, and water should be pure water or distilled water.
2, if the nasal mucosa edema is serious, you can use 2%-3% high concentration saline. After washing with high concentration physiological saline, the liquid in the edema nasal mucosa can quickly ooze out, which can eliminate edema and relieve nasal congestion. However, nasal irrigation with high concentration of normal saline usually lasts no more than 7 days. Also, people with no stuffy nose, dry nose and nosebleeds should not use high-concentration physiological saline.
In the cold season, it is best to heat the water before washing your nose with salt water. The water temperature is similar to the body temperature, and the effect will be better. This is especially important for patients with allergic rhinitis, because many patients are very sensitive to temperature changes, and if cold water is used, symptoms will be induced.