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Methods and apparatus for determining accurate hair color classificatinos and appropriate coloring agents to bring about a selected change of color include a table of hair color classifications, a color measuring instrument to arrive at Hunter L, a and b values for use in identifying a particular cl

Methods and apparatus for determining accurate hair color classificatinos and appropriate coloring agents to bring about a selected change of color include a table of hair color classifications, a color measuring instrument to arrive at Hunter L, a and b values for use in identifying a particular classification from the table and a database that identifies appropriate coloring agents based on a selection of coloring actions from a menu and the classifications of hair color.

대표청구항 ▼

[ I/we claim:] [1.] A process for analyzing the hair color of a subject, said process comprising the steps of:(a) measuring with a measuring instrument a value of a first color factor in the coloration of said subject's hair, said first color factor being dependent on lightness of the coloration of

[ I/we claim:] [1.] A process for analyzing the hair color of a subject, said process comprising the steps of:(a) measuring with a measuring instrument a value of a first color factor in the coloration of said subject's hair, said first color factor being dependent on lightness of the coloration of said subject s hair;(b) measuring with a measuring instrument a value of at least one further color factor in the coloration of said subject's hair, said farther color value being dependent on the relative content of opponent colors in the coloration of said subject's hair;(c) wherein steps (a and (b) comprise arriving at values of said first color factor and said at least one further color factor that correlate to preestablished ranges of values of said color factors and that further correlate to measures of preestablished ranges of hair coloration; and(d) comparing the measured values of said first color factor and said at least one further color factor with said preestablished ranges of values of said color factors, to determine where within said ranges the measured values of said color factors lie.