In one aspect the invention is arranged to provide a hair treatment apparatus adapted to reduce the temperature of hair. This apparatus includes at least one thermal energy storage core arranged to draw heat out of hair wherein said at least one thermal energy storage core is arranged to cool hair to a temperature below 0 Celsius.

A hair styling device is described having a body defining a chamber adapted to accommodate a length of hair, the chamber having a primary opening through which the length of hair may pass into the chamber; a rotatable element adapted to engage the length of hair adjacent to the primary opening; an elongate member non-detachably mounted to the body and around which, in use, the length of hair is wound by the rotatable element, the elongate member having a free end; the chamber having a secondary opening through which the length of hair may pass out of the chamber, the secondary opening being located adjacent to the free end; and a movable abutment which can engage the length of hair in use, the movable abutment being movable relative to the elongate member and having an open position in which the length of hair can pass through the secondary opening, and a closed position in which the length of hair is retained within the chamber, wherein the movable abutment is located within one of (i) the secondary opening, (ii) the primary opening, and (iii) a passageway connecting the secondary opening to the primary opening.

A method is provided for preparing a hair dye color mixture. The method includes: accessing a control system having at least a processor, a memory, and user input controls, the memory configured to store ingredients of a hair dye color mixture, receiving user input from the user input controls to change one or more ingredients of the hair dye color mixture to a new product brand; matching the color of the hair dye color mixture using one or more ingredients of the new product brand, in response to the user input; and displaying the ingredients of the hair dye color mixture in the new product brand on a display.

A system comprises implements, each including a body, a receptacle disposed on one end of the body and having a bore and an aperture formed through spaced apart wall portions of the receptacle, a clip pivotally attached to the elongated body, and a spring operable to bias the clip for a contact with the elongated body. An applicator handle includes a body having a hollow interior and an end thereof sized and shaped to fit the bore of the receptacle, a resilient member disposed within the hollow interior, a pair of pins upstanding on the ends of the resilient member and sized to be received within the aperture and two buttons engageable with the resilient member and mounted for a linear movement, the two buttons are manually operable to move the pins toward each other for a selective engagement or disengagement of the pins with the aperture.