A regular hair dryer can become an unexpected source of indoor air pollution. Recent studies by specialists at Pusan National University found that hair dryers emit ultrafine heavy metal particles into the surrounding air during operation. These microscopic elements can penetrate deep into the respiratory tract, settle in the lungs, and cause inflammation.
The researchers paid special attention to modeling how these particles spread within the human body. It turned out that devices with brushed motors release dozens or even hundreds of times more harmful compounds compared to modern brushless counterparts. The reason lies in the design features and materials used in the heating elements and motors.
Hazardous microparticles
During the heating and operation of household appliances such as hair dryers, air fryers, and toasters, tiny metal particles—aluminum, iron, copper, titanium—are released into the air. When heated to high temperatures, these substances easily penetrate the lungs and accumulate in the alveoli. Modeling showed that these areas of the respiratory system have the highest concentration of harmful compounds.
Children are particularly at risk. Due to their lower body mass and higher breathing rate, they absorb a greater dose of harmful particles when using household appliances near their faces. Continuous exposure to these pollutants can lead to chronic inflammatory respiratory diseases.
Impact on the indoor climate
Experts note that indoor air is often more polluted than outdoor air. The reason is the accumulation of dust, bacteria, and fine metal particles released by household appliances. The absence of filters in hairdryers and other devices only worsens the situation: all harmful substances are immediately released into the breathing zone.
Constant inhalation of polluted air can not only cause inflammation but also exacerbate pre-existing conditions. This is especially true for people with chronic lung diseases, allergy sufferers, and young children.
Technical solutions
Engineers and environmentalists emphasize the need to improve household appliances. Modern developments aim to reduce emissions of ultrafine particles and implement filtering systems. However, since these solutions are still rare, users should carefully select appliances and opt for models with brushless motors.
Additionally, experts recommend regularly ventilating rooms, using air purifiers, and minimizing the use of electronic devices near the face, especially around children. These simple measures can help reduce the concentration of harmful substances in the home and protect the health of the entire family.
If you didn’t know, Pusan National University is one of South Korea’s leading research institutions, specializing in environmental and medical studies. The university actively collaborates with international organizations and regularly publishes data on the impact of household factors on human health. Its experts help develop safety standards for household appliances and advise manufacturers on reducing harmful emissions.
