The Original MakeUp Eraser is a premium, patented, polyester cloth made up of millions of tiny hair-like fibers that work together to create a "suction" for all dirt, makeup and oil in your pores. It is double sided to erase makeup with the short-fiber side and to exfoliate the skin with the long-fiber side (the side with the tag). The machine-washable wipes last 3 to 5 years.