Disclosed is a hair iron comprising: a pair of bodies each including a fixing portion and a driver rotatably coupled to one side of the fixing portion; and a hinge portion which is coupled to the other side of the fixing portion of the pair of bodies and adjusts the angle of the pair of bodies, wherein the driver comprises: a rotating plate coupled to one end of the fixing portion so as to be rotatable in a longitudinal direction from the other end of the fixing portion to the one end thereof, as a rotary shaft; a heating module located on one surface of the rotating plate; and a cooling module located on the other surface of the rotating plate. Accordingly, by simultaneously or sequentially applying a hot/cold process, thermal damage to hair may be minimized and setting power may be increased.

A hair treatment device includes a first and a second arm, movable in relation to each other, which can be opened to introduce a strand of hair between them and closed to treat the strand of hair, a first and second contact surfaces respectively supported by the first and second arms, arranged facing each other, with at least one of the contact surfaces being heated, at least the first arm having at least one first piece supporting the first contact surface, a sealing element including a central window arranged such that it extends at least partially around the first contact surface between the latter and the first supporting piece,
wherein the sealing element includes at least one opening that is distinct from the central window and the first supporting piece and the first contact surface come into contact with each other through the at least one opening.

A hair styling tool or curling iron includes a handle portion and a styling portion. The handle portion houses a torsion spring. The styling portion includes a hair engaging member adapted to be biased toward the styling portion by the torsion spring. A spring door is releasably and/or removably connected to the handle portion and is configured to cover and at least partially secure the torsion spring within the handle portion. The torsion spring is not mechanically connected to the handle portion so that releasing and/or removing of the spring door from the handle portion allows for removal and replacement of the torsion spring.

A hair styling tool or curling iron includes a handle portion and a styling portion. The handle portion houses a torsion spring. The styling portion includes a hair engaging member adapted to be biased toward the styling portion by the torsion spring. A spring door is releasably and/or removably connected to the handle portion and is configured to cover and at least partially secure the torsion spring within the handle portion. The torsion spring is not mechanically connected to the handle portion so that releasing and/or removing of the spring door from the handle portion allows for removal and replacement of the torsion spring.

Disclosed is a non-contact ultrasonic skincare device having LED light irradiation and mist spraying functions. The device includes a dome mask in a form of a hemisphere; an LED power source installed on an inner ceiling face of the dome mask; an ultrasonic oscillator installed on the inner ceiling face of the dome mask; a spray nozzle installed on the inner ceiling face of the dome mask so as to spray a cosmetic stored in a storage tank into the inner space in a form of mists as fine particles; and a power supply for supplying power to each of the LED power source, the ultrasonic oscillator, and the spray nozzle; and a controller configured to control an operation of each of the LED power source, the ultrasonic oscillator, and the spray nozzle.

A hairstyling device is provided. The hairstyling device includes a heatable hair contact member having a hair-contactable surface, the hair contact member being operable to apply heat to hair via the hair-contactable surface. The hairstyling device includes a controller configured to monitor power draw associated with heating of the hair contact member during heating of hair of a user via the hair-contactable surface. Based on the monitored power draw, one or more hair damage parameters indicative of damage of the heated hair are calculated. The controller is configured to control the hairstyling device based on the one or more calculated hair damage parameters.

A hairstyling device is provided. The hairstyling device includes a heatable hair contact member having a hair-contactable surface, the hair contact member being operable to apply heat to hair via the hair-contactable surface. The hairstyling device includes a controller configured to monitor power draw associated with heating of the hair contact member during heating of hair of a user via the hair-contactable surface. Based on the monitored power draw, one or more hair damage parameters indicative of damage of the heated hair are calculated. The controller is configured to control the hairstyling device based on the one or more calculated hair damage parameters.

A method for treating the hair with the aid of a treatment device, notably a heat treatment device, in particular a straightening device, in which a lock of hair is exposed, while the device is being moved along the latter, in a single operation to: apply cosmetic composition with the aid of an application member of the device, and then to apply steam with the aid of a steam outlet of the device that is offset relative to the application member in the direction of movement of the lock of hair by a nonzero distance v, measured between the median plane of the steam outlet and the median plane of the application member, of less than or equal to 10 mm.