Reusable cotton rounds are a great zero-waste way to perform all kinds of beauty rituals, like removing makeup, applying cleanser, toner, or exfoliant, and many other things. Almost anything that you currently use a cotton ball for can be replaced with a reusable cotton round. You will also use less product because cotton rounds do not soak up as much product as typical cotton balls do. The only drawback, they are not really meant for removing nail polish.
This set by SW Basics comes with a laundry bag included so all you have to do it put the rounds in the bag and toss them into the wash with the rest of your laundry.