Use a hair straightener and a roller rod to make your hair clean? May vaporize hair makeup and release large amounts of dyed particles

Preparing your hair before leaving in the morning, "straight hair clips" or "rolling sticks" are essential tools for many people. However, the latest research at Purdue University in the United States warned that high-temperature hair in just 10 to 20 minutes may inhale more than 10 billion nano-grade dyed particles, and the exposure is quite high-speed roads in a long time.

The equipment is heated with one plus, and the chemical substances of hair makeup are vaporized and enter the respiratory tract. Research shows that when hair straighteners and rollers heat their hair above 150 degrees Celsius, the volatile chemicals in hair care, styling sprays, gel or hair care oil will be vaporized, release the "nanoparticles" of dyes. These tiny particles will enter the respiratory tract directly, and eventually settle in the deepest part of the lungs and the most sensitive alveolar area. The research team warned that long-term exposure may cause respiratory stress, lung inflammation, and even cause cognitive decline.

research host Dr. Nusrat Jung said that this is the first systematic study of daily hair procedures and air dyeing risks. "In the past, the public had almost no idea about the hidden harms of this kind, and this discovery was grievable."

The emissions of "heat-resistant" wash-free products are particularly surprising.

The Purdue University team once discovered that a large amount of "D5 siloxane" will be released during the hair heating process. This is a common ingredient in hair care products that can increase softness and lustrench, but the European Chemicals Authority has listed it as a "highly durable and highly bioaccumulated" chemical, with animal experiments showing that it can damage respiratory, liver and neural systems.

In the latest experiment, the researchers invited the subjects to wear their own hair care products and hair care tools to perform daily styling in the experiment room specially built at Purdue University. The test showed that within an hour, not only did a large amount of D5 siloxane accumulate in the air, but there were also 1 cubic centimeter of air with a high of 10,000 to 100,000 nanoparticles. Especially for the "heat-resistant" effect, the emissions of non-wash-free products such as sprays, creams and gels are particularly amazing.

The important sources of neglected air should be controlled and the wind should be maintained.

This study published in Environmental Science and Technology points out that the emissions of hair products after heating are an important source of air that has been neglected in the past.

To reduce risks, the research team recommends avoiding the use of chemical-containing hair care products at high temperatures; if it is difficult to avoid it, at least the amount should be controlled and the environment should be kept in good ventilation. Even if the heating equipment is not required, as long as the ventilation is insufficient, the chemical substances released in the product will be absorbed. Therefore, the window must be opened or the winding equipment must be opened when using it.

This study reveals the air quality hidden behind hair habits, reminding the public to be aware of long-term health risks while pursuing bright appearance.