Patent ID: 7963303

Claim:
A system for manually preparing a hair dye mixture, the system comprising: a control system having at least a memory, input controls, and a display; at least one formula stored in said memory, the formula defining instructions of one or more colorants and/or dye blending materials and amounts recommended for manually recreating a hair dye mixture; a scale in communication with the control system; software for displaying the instructions on said display in response to a manual input from the input controls, and monitoring software to monitor a weight on the scale; formula adjusting software configured to adjust the formula of the hair dye mixture when a weight of a colorant or dye blending material being manually added to the scale is different than the amount recommended in the formula such that the formula adjusting software is configured to define an adjusted formula; and the formula adjusting software is further configured to display the adjusted formula on said display whereby a user is able to make corrections to the colorants and/or dye blending materials in accordance with the adjusted formula.