A major investigation across Central Europe has uncovered hazardous chemicals in every one of 81 headphone models tested, including top brands like Bose, Panasonic, Samsung, and Sennheiser.
The ToxFree LIFE for All project, involving civil society groups from Czech Republic, Slovakia, Hungary, Slovenia, and Austria, analysed in-ear and over-ear headphones bought locally or from online platforms like Shein and Temu.
Researchers found harmful substances in the plastics of all products, with bisphenol A (BPA) in 98% of samples and bisphenol S (BPS) in over 75%, alongside phthalates, chlorinated paraffins, and flame retardants.
Health Risks from Endocrine Disruptors
These chemicals, which mimic oestrogen, pose risks like cancer, neurodevelopmental issues, male feminisation, early puberty in girls, infertility, liver, and kidney damage.
Karolína Brabcová, chemical expert at Arnika, warned: “These chemicals are not just additives; they may be migrating from the headphones into our body,” accelerated by sweat and heat during daily or exercise use.
While no immediate danger exists, long-term exposure – especially for teenagers – concerns experts due to the “cocktail effect” from multi-source endocrine disruptors with no safe level.
Market Failure, Calls for Bans
Campaigners labelled it a “market-wide failure,” urging bans on entire classes of these chemicals in consumer goods and demanding manufacturer transparency.
Prolonged skin contact during headphone use enables dermal absorption, as prior studies show bisphenols leaching into sweat; some samples exceeded proposed EU limits up to 35 times.
This follows ToxFree probes finding similar toxins in baby dummies and women’s underpants, highlighting persistent contamination in everyday items despite regulations.
