These bristles are made of super fiber and its superabsorbent force can easily remove dust and dirt from the body surface. It is sturdy and durable and is not immersed in rain and sweat. The cotton yarn is made of air spun foamed cotton and specially woven and processed. It can be used without fluffing no debris light and durable beautiful and exquisite. Each wax brush line consists of dozens of tiny cotton threads that are soft and do not damage the body surface.