Patent ID: 8393358
Filing Date: 2013-03-12
Classification: A45D,B01F,G07F

Abstract:
1. A method for manually preparing a hair dye mixture, the method using a scale and control system in communication with each other, the control system including a memory and a display, the memory containing a formula defining instructions for blending a hair dye mixture using one or more colorants and/or dye blending materials and amounts recommended for producing a pre-defined batch size of the hair dye mixture, wherein the instructions are displayed on said display, the method comprising: displaying the instructions for producing the hair dye mixture on the display; monitoring a weight on the scale as colorant(s) and/or dye blending material(s) are added to a receptacle on the scale in accordance with said instructions while using current product packaging that does not have specialized packaging requirements; recalculating the formula of the hair dye mixture for an adjusted batch size when an input received by the control system indicates an amount that is different than an amount recommended in the formula for the pre-defined batch size; and displaying the recalculated formula on the display for the adjusted batch size, thereby preventing excess hair dye mixture from being produced and spoiling due to oxidation.