Method and data processing device for computer-aided determination of a hair dye for dyeing hair in a desired hair color and apparatus for producing an individually determined hair dye

摘要

In various embodiments, a method is provided for computer-assisted determination of a hair colorant for coloring hair in a desired hair color. The method may include: determining a value or values for at least one initial state parameter describing an initial state of the hairs to be dyed, determining a plurality of hair colors obtainable by dyeing each with an available hair dye, based on a hair color data for a hair color The plurality of coloring conditions determine the respective dyeing process and the obtained hair colors are obtained by the respective dyeing process, and the value of the at least one initial state parameter, selecting the desired hair color from the plurality of hair dyes obtainable by dyeing each with an available hair dye, and determining the hair dye for dyeing hair in the desired hair color based on the Wun hair color and the established relationship between the coloring preconditioning parameters and the hair colors achieved.