To naturally finish hair by surely uniformly and continuously waving or curling all the hair from the top end part to the root section without generating any straight section in the middle even in spite of simple and easy handling.

At an eccentric position inside an outer cylinder 3 for hair curl for which a slender notched groove 1 for hair take-out is formed along axial direction, an inner cylinder 5 for hair curl, of which the diameter is shorter than that of this outer cylinder 3, in a separate body is provided for winding a top end part m1 of hair M around its outer peripheral surface and further passing through a hair root section m2 continued to the hair top end part m1 while drawing it from the notched groove 1 of the outer cylinder 3 to the outside.