In order to avoid the adverse effects of haze on health, many people returned home from outside the initiative to wash up the nose. Mr. Liu said that recently returned home from work always feel the nose is not smooth, you can dig out the dirty secretions, his wife bought a nasal washer online, Mr. Liu also began to wash his nose with water every day. Nasal washer is really effective for inhaling the haze? How to use it correctly? Haze days necessary to “wash the nose” is the nasal cavity is the lungs for breathing and gas exchange channels and gateways, but also a variety of viruses, bacteria are most likely to grow, reproduce, gather and enter the respiratory tract and the lungs place. The human nasal cavity has a mucosal cilia self-cleaning system, which protects the upper respiratory tract and prevents it from being infected. Under normal conditions, the nasal mucosa is covered with a thin layer of mucus on which cilia grow that can be seen under the microscope. This “mucus blanket” captures inhaled microorganisms, dust, pollen and other allergens, which are then carried backwards by the nasal cilia to the nasopharynx and eventually to the stomach or exhaled by the mouth. Normally, this nasal self-cleaning function has been functioning normally and naturally without human intervention. However, in the case of serious air pollution, people breathe in a lot of dust, dust mites, pollen, chemical substances such as sulfur dioxide, mold, etc. These harmful substances continuously destroy the tender nasal mucosa and nasal cilia tissues in the nasal cavity, thus making the mucus more sticky and the nasal self-cleaning ability is therefore seriously reduced. This is the time when nasal cleansing can be assisted. In other words, nasal washing is useful when air pollution is severe. However, too much cleaning may affect the normal balance in the nasal cavity, so nasal washing should not be too frequent. When the air pollution is serious once a day in the morning and evening is enough. How to properly “wash the nose” “Wash the nose” how to carry out? Is it necessary to use a nasal washer? A nasal washer is a tool used to cleanse the nasal cavity. It usually uses a certain pressure (either suction, gravity, or mechanical pressure) to send saline into the nostrils and flows through the nasal vestibule (the part exposed outside the head), the nasal passage, around the nasopharynx through the posterior nostrils, or out of one nostril, or out of the mouth. Through the above path, with the help of saline’s own cleaning effect and the impact of the water, the pathogenic bacteria and dirt that have gathered in the nasal cavity are discharged, thus restoring the normal physiological environment of the nasal cavity, restoring the self-detoxification function of the nasal cavity, and achieving the purpose of protecting the nasal cavity. The nasal washer plays an auxiliary role in the process of washing the nose. The posture of the nasal wash is also very important. It is recommended to take a low head position when washing the nose, gently plug the end of the nasal washer in the vestibule of the nasal cavity, and squeeze the washer with the hand directly below the head to flush the salt water into the nose. Some people like to wash their noses sideways, this position is not desirable. When the head is turned sideways, water may flow into the middle ear cavity through the eustachian tube, which is connected to the back of the nasal cavity, leading to secretory otitis media in some patients. Tilting the head is also a position that is not recommended, as it not only leads to choking and coughing, but also may swallow the harmful substances that are flushed out. In addition, the rinse should not go too deep into the nasal cavity. In the face of the various styles, specifications and prices of nasal washers on the market, how to choose? When choosing, pay attention to: choose the products produced by regular manufacturers with qualified batch numbers. Sent into the nasal cavity end to spindle-shaped is better, if too sharp may stab the nasal cavity. Many people directly use tap water to wash the nose, some use boiled cold water, pure water, in fact, the choice of nasal wash physiological saline or regular manufacturers of nasal wash salt is better. In addition, now you can also choose to use seawater nasal spray care device (such as nasal music), which is made of natural non-polluting high-quality seawater through high-tech blending and processing and human body fluids isotonic solution, can clean and moisten the nasal cavity and mucous membrane, rinse the nasal cavity of dust, pollen, smoke and other allergens, its characteristics are easy to use, especially for office workers and children. Readers should also be reminded that parents must be present to guide and supervise children when washing their noses to prevent nasal injuries caused by inadvertent washing.