The air inside a closed car or room is loaded with dangerous pollutants, such as bacteria, virus, fungi, pollen, smog, exhaust, dust, and other contaminants. IONCARE UV Air Purifier and Ionizer has a multi-stage filtration system: 3-layer Air Filter, Germicidal UV Lamp, Negative Ionization, and Fragrance Release to clean, sterilize and freshen the air thoroughly.1) 3M FiltreteTM Micro Particle Air Filter; 2) Activated Carbon Filter; 3) Nanometer Photocatalyst Filter; 4) Germicidal UV Lamp; 5) Ozone-free Carbon Fiber Negative Ion Generator; 6) High-performance Blower Fan;7) Fragrance Release (Optional).