Your Washing Machine Breaks Clothes Into Microplastics
NonToxCo Research
Science & Safety Team · 4/7/2026
Every time you wash polyester clothing, the turbulence inside your washing machine snaps fibers apart and releases microplastic fragments into the water. A new study shows exactly how it happens.
How Washing Creates Microplastics
A 2026 study in Scientific Reports built a system to watch fiber breakage in real time under simulated washing conditions. Using high-speed cameras and flow analysis, researchers tracked how polyester and cotton yarns deform, stretch, and snap apart in turbulent water.
The key finding: it's the spinning and churning inside the machine that physically breaks fibers loose. The stronger the turbulence, the more fragments shed. Every load of laundry sends these tiny plastic fibers straight into the drain.
Where Those Fibers End Up
Most water treatment plants don't filter out microplastic fibers this small. They pass through into rivers, lakes, and oceans. They end up in drinking water. They end up in seafood. They end up back in you.
Polyester is the biggest offender because it's plastic. But even cotton sheds fibers, though those are at least biodegradable.
What You Can Do
Wash synthetic clothes less often. Use a microfiber-catching laundry bag or a washing machine filter. Choose natural fabrics like cotton, linen, or wool when you can. Wash on gentle cycles with cold water to reduce fiber breakage. Check out non-toxic home essentials for laundry products that help cut microplastic pollution.
Also see non-toxic kitchen essentials for safer alternatives.