The invention relates to a foil (14) for a strand (12) of keratinic fibers including a first sheet (20) and a second sheet, the first sheet (20) being connected to the second sheet by an articulation, in particular a hinge, the first sheet (20) being movable relative to the second sheet between a closed configuration for illumination of the strand and an open configuration. The first sheet (20) is substantially at least partially transparent to the UV-visible light, and the second sheet (22) is substantially at least partially opaque to the UV-visible light.

In a hair straightener comprising an elongate straightener arm (A) having a heating plate (H), the invention provides a pivot mechanism (2) for supporting the heating plate (H) in a pivotable manner around a pivot axis (P1) in a longitudinal direction of the elongate straightener arm (A). Preferably, the pivot axis (P1) is at a heating surface of the heating plate (H), or between a first heating plate of a first straightener arm and a second heating plate of a second straightener arm when the first straightener arm and the second straightener arm are in a relative position arranged for clamping hair. Advantageously, a bias mechanism (4) (e.g. a resilient member like some spring) biases the heating plate (H) to a neutral position.

A rechargeable hair styling tool may be plugged into an electrical outlet to enable charging of each battery and operation of the hair styling tool. Electronics of the hair styling tool may enable it to alternately operate under power from the battery or batteries (i.e., stored power) while the hair styling tool is unplugged from an electrical outlet (e.g., a wall socket, etc.) and under power of an external source of electricity while the hair styling tool is plugged into the electrical outlet. Each heating element of such a rechargeable hair styling tool may be heated when the hair styling tool is plugged in and, once each heating element has been heated to a sufficient temperature, continue to function under power supplied by the battery or batteries of the rechargeable hair styling tool.

A rechargeable hair styling tool may be plugged into an electrical outlet to enable charging of each battery and operation of the hair styling tool. Electronics of the hair styling tool may enable it to alternately operate under power from the battery or batteries (i.e., stored power) while the hair styling tool is unplugged from an electrical outlet (e.g., a wall socket, etc.) and under power of an external source of electricity while the hair styling tool is plugged into the electrical outlet. Each heating element of such a rechargeable hair styling tool may be heated when the hair styling tool is plugged in and, once each heating element has been heated to a sufficient temperature, continue to function under power supplied by the battery or batteries of the rechargeable hair styling tool.

The present invention relates to a multi-functional hair-styling thermal treatment beauty device, which continuously rotates, in a clockwise or counterclockwise direction, a hair-styling part for holding hair while holding body part is held or can open an upper rotary body of the hair-styling part so as to enable hair styling to be easily performed. according to circumstances, and forms continuous grounding structure so as to enable power to be continuously supplied to a heating plate mounted inside the hair-styling part capable of continuously rotating, so that the heated state of the heating plate, caused by the heating of a current, is continuously maintained even during continuous rotation, and thus various hair styles can be more effectively created by the hair-styling part, so that hair styling is easily performed according to circumstances, and operation fatigue is reduced so that use convenience can. be improved.

A hair straightening apparatus having two arms pivotably coupled together and arranged to receive hair within a cavity formed between them is disclosed. A plenum in at least one arm includes an air inlet for receiving airflow from a fan unit and an air outlet for emitting airflow towards hair within the cavity. The air outlet extends along the inner wall of at least one of the first arm and the second arm and is adapted to direct airflow towards a lower edge of the arms.

A hair straightening apparatus having two arms pivotably coupled together wherein the arms are arranged to receive hair within a cavity formed between them is provided. At least one of the first arm and second arm includes a plenum having an air outlet for emitting air towards hair within the cavity. A hair clamp including a pair of clamping members for gripping hair therebetween, wherein each clamping member is supported by an inner wall of the first arm and second arm, respectively.

A hairstyling device is provided. The hairstyling device is operable to apply heat to hair of a user. The hairstyling device includes sensor equipment configured to generate sensor output dependent on at least one use characteristic of the hairstyling device indicative of current use of the hairstyling device. The hairstyling device includes a controller configured to receive the sensor output from the sensor equipment, process the sensor output to determine one or more hair damage parameters indicative of damage to hair being heated by the hairstyling device, and cause, during heating of the hair by the hairstyling device, a user interface to provide an output dependent on the one or more hair damage parameters.

A hairstyling device is provided. The hairstyling device is operable to apply heat to hair of a user. The hairstyling device includes sensor equipment configured to generate sensor output dependent on at least one use characteristic of the hairstyling device indicative of current use of the hairstyling device. The hairstyling device includes a controller configured to receive the sensor output from the sensor equipment, process the sensor output to determine one or more hair damage parameters indicative of damage to hair being heated by the hairstyling device, and cause, during heating of the hair by the hairstyling device, a user interface to provide an output dependent on the one or more hair damage parameters.

The flat iron controller is an item of hairdressing equipment. The flat iron and the personal data device are defined elsewhere in this disclosure. The flat iron controller incorporates a flat iron and a personal data device. The personal data device controls the operation of the flat iron. Specifically, the personal data device: a) initiates the operation of the flat iron; and, b) sets the operating temperature of the flat iron.