Photo: NFstock (Shutterstock)
Hair ties ride around in the bottoms of our bags, on our wrists, and in our hair—especially when we’re working up a sweat. We use them over and over again, and therefore, they should be washed to remove all the oil, sweat, hairspray, and daily dirt these things collect. Put them in a small mesh bag and run them through your next load. (This goes for reusable makeup sponges, too.)