Cashmere fabric in the actual wear and washing process, constantly undergo friction, the surface of the fiber end will be exposed, in the surface of a lot of plush, that is, "wool". If these hairs do not fall off in time during wear and use, they become entangled with each other and are crumpled into many spherical granules, which is often called "pilling".
When the ball is slightly lifted locally, it can be removed gently by hand, taking care not to pull hard. Or after washing, use scissors to gently cut down the ball down, pay attention not to cut to the root, not to use such a brutal tools such as shaving knife or pusher to shave, easy to cause secondary damage.