Prym dressmaker's wax comes as a practical round plate in a two-piece clear plastic box that has three openings with holes on both sides. By pulling the thread through this groove, it is coated with a thin layer of wax and thus gains flexibility and stability. Thus, the thread slides smoothly through the material and does not fray. But not only thread, but also zippers or jammed drawers can be freed with seamstress' wax.