Can microplastics from dryer lint contaminate indoor air?

What's actually in it

Dryer lint is more than just dust. It is a collection of tiny fibers shed from your clothes during the drying process. These fibers are often made of synthetic materials that break down into microplastics. When these particles become airborne, they circulate throughout your home.

Beyond the physical fibers, indoor air can contain a mix of other harmful substances. A 2026 study in J Hazard Mater highlights that residential air often contains a complex cocktail of semi-volatile organic compounds. When you combine these chemical pollutants with airborne microfibers from your laundry, you are breathing in a mixture that your lungs are not designed to handle.

What the research says

A 2026 study in Environ Res found that repeated airway exposure to microfibers from washing-machine lint is linked to lung inflammation. The research suggests this happens because the fibers interfere with phagocytosis: the process your body uses to clear out foreign particles. This dysfunction may even affect how your cells replicate their own DNA.

The problem is not limited to the laundry room. A 2026 study in Int J Hyg Environ Health confirms that airborne microplastics are a persistent issue in indoor environments. Once these fibers are released into the air, they do not simply disappear. They become part of the dust and air quality profile of your entire home, increasing your daily exposure to synthetic materials.