Wool has been tested and proven to irreversibly absorb 3 of the EPA’s top 9 most harmful indoor air toxins - formaldehyde, sulfur dioxide and nitrogen dioxide. The keratin molecule located on the inside of the wool fiber reacts and binds to these specific chemical compounds.
Formaldehyde, sulfure dioxide and nitrogen dioxide are common VOC’s offgased from many popular building materials, systems, furnishings, cleaning products etc. These chemical compounds tend to evaporate at room temperature and are released into the air we breathe. Indoor air toxins cause SBS - Sick Building Sydrom (formaldehyde is the largest contributor to SBS), respiratory issues, eye irritation and some are carcinogenic.