General Purpose Bamboo Charcoal Air Freshener AIR FRESHENER: Absorbs harmful pollutants from the air including allergens, bacteria and viruses. DEODORIZATION: Absorbs odors. RELAXATION: Releases negative ions that freshen the air. ELECTROMAGNETIC SHIELDING: Absorbs electromagnetic radiation emitted from electronics. HUMIDITY REGULATION: Absorbs excess moisture in the air, and then releases moisture when the air becomes too dry, helping to regulate overall humidity levels.