Your fleece jacket, yoga pants, and polyester shirt have something in common beyond comfort — they're shedding thousands of microscopic plastic fibres every time they're washed. Textile microplastics are now recognised as one of the most significant sources of microplastic pollution entering the ocean.
The Scale
A single wash cycle can release between 700,000 and 12 million microplastic fibres, depending on the garment type, age, and washing conditions. Globally, an estimated 500,000 tonnes of microplastic fibres enter the ocean from textile washing every year — equivalent to 50 billion plastic bottles.
Why Textiles?
Synthetic fabrics — polyester, nylon, acrylic, and elastane — now make up over 60% of all clothing produced worldwide. These materials are essentially plastic. The fibres are thin (typically 10–30 micrometres in diameter) and light, making them difficult to capture in wastewater treatment.
Older, more worn garments shed more fibres. Higher wash temperatures, longer cycles, and more aggressive detergents increase shedding. Front-loading machines produce fewer fibres than top-loaders.
Environmental Impact
Textile microfibres are the most common type of microplastic found in marine environments. They've been identified in deep-sea sediments, Arctic ice, and marine organisms from zooplankton to fish. Their thin, elongated shape may make them particularly harmful — research suggests fibres cause more physical damage to organisms than spherical microplastics.
Fibres also carry chemical additives — dyes, flame retardants, and finishing agents — that can leach into the environment and organisms.
Solutions
- **Microplastic-catching laundry bags** (like the Guppyfriend) can capture 80–90% of fibres
- **External washing machine filters** are even more effective and are now mandatory in France
- **Choosing natural fibres** — cotton, wool, linen — reduces shedding
- **Washing less frequently** at lower temperatures with liquid detergent helps
- **Designing better fabrics** — manufacturers are developing low-shedding synthetic textiles
The Policy Landscape
France now requires microplastic filters on all new washing machines. The EU is considering similar measures. Extended producer responsibility schemes could make fashion brands accountable for the microplastic pollution their products cause.
This article is part of the CONTRAST project, funded by the European Union under Horizon Europe. Views expressed are those of the author(s) only.