A device having multiple bowls for mixing colorants. The device includes lateral tabs adjacent each bowl for erasably labeling the tabs with the identification of the contents of the corresponding bowl. A centrally located timer mechanism is provided to time the colorant mixture setting times and a marker ring is rotatably provided around the timer mechanism to selectively indicate the bowl in use and being timed.

Coloring of hairs are commonly done for various reasons. Commonly, a single hair dye is applied which leaves a uniform coloring of the hairs. However, many prefer having shades of hair coloring or two different coloring. Thus in this application methods and means are introduced that allows a differential coloring to be possible. In this method a hand held brush means allows a predicted amount of the hair dye to be carried to the hairs and applied. Also a special dye pan allows a predicted amount of hair dye to be applied to the brush units to make such goals possible.

A valve for injecting a fluid into a bowl has a vent with an inlet and a flexible diaphragm for covering the discharge opening of the vent. The diaphragm is connected to a vessel body of a bowl, and the vent is connected to a stand of a bowl. The diaphragm has a closing area for closing the discharge opening and a connecting area for connecting the diaphragm with the vessel body spaced to the vent. At least one window is provided between the closing area and the connecting area.

A valve for injecting a fluid into a bowl has a vent with an inlet and a flexible diaphragm for covering the discharge opening of the vent. The diaphragm is connected to a vessel body of a bowl, and the vent is connected to a stand of a bowl. The diaphragm has a closing area for closing the discharge opening and a connecting area for connecting the diaphragm with the vessel body spaced to the vent. At least one window is provided between the closing area and the connecting area.

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 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.

[Object] Provided is an automatic hair washing device configured to achieve a hair washing operation like hair washing by human hand. [Solution] An automatic hair washing device includes a washing part 10. The washing part 10 includes: a cover member 11 having a head holding space 11h where a human head is placed; a plurality of contacts 12 each formed of a rod-shaped member and each disposed on an inner face 11a of the cover member 11 in an axially movable manner; and energization means 20 for energizing the contacts 12 toward the head holding space 11h. The washing part 10 is disposed such that the cover member 11 is movable along the human head. The energization means 20 is configured to energize the contacts 12 toward the head holding space 11h such that the contacts 12 being in contact with the human head apply approximately constant forces to the human head even when the contacts 12 are moved.

A method is provided for preparing a hair dye color mixture. The method includes: providing a control system having at least a memory, input controls, and a display; storing in the memory at least one formula, the formula including one or more colorants and/or dye blending materials, and wherein each colorant and/or blending material is separately assigned to an initial product brand; receiving input from the input controls to change a colorant and/or blending material from the initial product brand to one or more subsequent product brands, and wherein the control system recalculates components of the formula using the one or more subsequent product brands in response to receiving input from the input controls; and matching the color of the hair dye color mixture made from colorants and/or dye blending materials of the initial product brand using colorants and/or dye blending materials of the one or more subsequent product brands, in response to the input.

A method is provided for preparing a hair dye color mixture. The method includes: providing a control system having at least a memory, input controls, and a display; storing in the memory at least one formula, the formula including one or more colorants and/or dye blending materials, and wherein each colorant and/or blending material is separately assigned to an initial product brand; receiving input from the input controls to change a colorant and/or blending material from the initial product brand to one or more subsequent product brands, and wherein the control system recalculates components of the formula using the one or more subsequent product brands in response to receiving input from the input controls; and matching the color of the hair dye color mixture made from colorants and/or dye blending materials of the initial product brand using colorants and/or dye blending materials of the one or more subsequent product brands, in response to the input.

A hair color retouch kit, components of the kit, and methods of use and doing business. The kit can include one or more mixing containers. In one embodiment, a mixing container provides a colorant compartment for sealingly or separately containing a custom hair coloring formulation and peroxide compartment for sealingly or separately containing peroxide. The mixing container(s) can be used by a professional hair colorist to provide a hair coloring client with custom hair coloring formulation and peroxide that can be mixed and applied by or for the client to hair regrowth that occurs after a hair coloring session with the professional. The kit can provide other components as desired, such as a mixing spatula, an applicator brush, and instructions for example. The kit can be packaged in attractive and efficient packaging, include indicia identifying the source of the kit, and be customized to promote the colorist, salon, or other entity.