When I’m done cleaning, I don’t throw the microfiber towel in with the rest of my laundry. I rinse it out in warm water in the sink and let it air-dry. If you really need to wash it, go for cold water in your washing machine and air-dry it—hot water and high heat are bad for microfiber, and so are chemical cleaning agents and lots of dish soap, said Rodrigo B. Gonzalez, a creative director of the company that makes MagicFiber. Heat degrades the fibers and cleaning agents get stuck in them, he told me, reducing their effectiveness.
