This Revolutionary Plant Air Purifier quietly emits 8,000,000 pcs/cm3 negative ions into the air. This air purifier is great to have for those who suffer from airborne particles allergies such as flu, sinus. 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. When oxygen in the air is charged by the ionizer, negative ions are generated. Negative ions bind with the airborne pollutant such as positively charged smoke, dust, pollen, germs, PM 2.5, and charge neutralization occurs.