Do polyester clothes shed microplastics during washing?
Yes. Polyester clothing releases fragmented fibers and microplastics into the water during the washing process, according to research in Scientific Reports.
What's actually in it
Polyester is a synthetic plastic material. When you wash these garments, the mechanical action of your machine breaks the fabric down. This process releases tiny pieces of plastic, known as microplastics, directly into the wastewater. These are not just loose threads: they are persistent pollutants that enter our environment every time you run a load of laundry.
What the research says
A 2026 study in Sci Rep developed a new method to track exactly how these fragmented fibers and microplastics are shed during laboratory washing conditions. The science confirms that our clothing is a primary source of these particles.
The impact of these materials extends beyond the laundry room. Peer-reviewed research has linked microplastic exposure to serious health concerns. For example, a 2026 study in J Adv Res and a 2026 study in J Hazard Mater both found that microplastics and nanoplastics are present in human follicular fluid and are associated with a diminished ovarian reserve. Furthermore, a 2026 study in J Environ Sci (China) showed that microplastic exposure disrupts the gut barrier and the body's natural balance of healthy bacteria.
The research at a glance
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