This Revolutionary Plant Air Purifier quietly emits 8,000,000 pcs/cm3 negative ions into the air. According to the source published by KOREA Far Infrared Association KIFA, most of the Nature Forest and Waterfall's negative ions concentration is about 50,000 pcs/cm3. Negative ions, which exist in Nature forests, waterfalls, seashores in high concentration, have positive effects on human's physical and mental health. Breathing in negative ions promote relaxation and have been reported to normalise human's breathing rate, decrease blood pressure and relieve tension! How it works? When oxygen in the air is charged by the ioniser, negative ions are generated. Negative ions bind with the airborne pollutant such as positively charged smoke, dust, pollen, germs, bacteria, PM 2.5 and a process called "Charge Neutralisation" occurs. The air pollutant was removed and killed and it will naturally subside to the ground instead of being inhaled into human's lung. This air ionizer can remove 99.97% of air impurities such as smoke, dust, germs, pollen, smell. Our lab experiment shows that this air purifier can effectively remove thick injection of smoke in an air tight container in less than 20 secs! Helps to Relieve Allergies Symptom. This air purifier is great to have for those who suffer from airborne particles allergies such as flu, sinus, asthma and eczema. It's also perfect for health conscious people who would like to improve their overall health and to have better wellness for themselves and family.