Brick and Comb can be used to better care for the clothes that pill. Pilling is (of knitted fabric) form small balls of fluff on its surface. Pilling is often found on cold weather attire at the armpits, cuffs or other areas that get rubbed frequently. This duo will take care of sensitive (cashmere) fabrics as well as heavy duty cottons. Please read the back of the product for instructions.