PURPOSE: To improve the work efficiency and to facilitate the after-care without causing damage to hairs by letting the metal core line penetrate into a flexible tube having a smooth surface, winding hair bunch in a roll-like configuration by taking it in a vertical direction onto a permanent wave rod.

CONSTITUTION: A permanent wave rod is manufactured by penetrating a metal core wire in a relaxed way into an elongated soft tube such as vinyl chloride tube or ethylene tube having a circular cross section. When the core line 13 is bent along with the tube 12, materials characterized by a rigidity enabling to maintain the configuration and a diameter and a light aluminum wire resisting the erosion by permanent liquid and having a external diameter of 1mm are selected. A desired amount of hair bunch 14 is sliced in a lengthy way in the vertical direction to be rolled along the longitudinal direction around the rod from the base of the hair bunch to the end of hairs with the upper end on one side of the rod 11. The end of the hairs is fixed with clips 15 while the upper end is bent to the side of hair bunch 14.