Abstract: A method of setting durable curls in hairs in which a flow of simultaneously warmed and humidified air is applied to rolled hairs. A device for performing the method comprises a base body, a stand erected on the base body preferably in a manner foldable in the base body and a hood of substantially semi-spherical shape for defining an optimum hair setting atmosphere therein and coupled rotatably to upper end of the stay, air warming and humidifying mechanism secured outside the hood adjacent mounting position thereof to the stand for blowing warmed and humidified air inside the hood preferably from ceiling to downward open edge of the hood along inner wall thereof, and means for controlling the mechanism and disposed in the base body for easy access. In an optimum structure of the device, the base body is of a disk shape complementing the circular open end of the hood, so that when the stand is folded and the hood is rotated over the base body the hood will cover the base body compactly for storing.