The Original MakeUp Eraser is a premium, patented, polyester cloth. Made up of millions of tiny fibers to work as a "suction" for all dirt, makeup & oil in your pores. Double-sided to erase makeup (short fibers) & exfoliate the skin (long fibers). Antibacterial, machine washable & reusable 3 to 5 years. Ultra-soft, dermatologist approved & great for sensitive skin.