Yes. Dryer lint is compostable.

Is dryer lint bad for the environment?

That synthetic lint likely makes its way through sewage treatment systems and into oceans around the world. The consequences of this widespread pollution are still hazy, but environmental scientists say the microscopic plastic fibers have the potential to harm marine life.

Is dryer lint good for plants?

You can add dryer lint as a mulch around potted plants as long as you’re not using dryer sheets, which may leave an unwanted chemical residue. Prevent erosion. When spread out and dampened with water, dryer lint can form a barrier to protect soil from erosion.