Patent ID: 7595868

Claim:
A method for determining hair conditions, comprising the subjection of a hair strand to the influence of an electromagnetic field, which induces the glow of the hair, and subsequent measurement of the intensity of the light emission radiated by hair, characterized in that the hair is subjected to the influence of the electromagnetic field at its end surfaces, whereupon the intensity of the light emission radiated by the hair at its end surfaces is measured per unit area of the total area of the hair end surfaces (I 1 ), and then, along with the electromagnetic field's influence upon the end surfaces of hair, the side surface of the hair strand is subjected to the influence of an electric or electromagnetic field, whereupon the intensity of the light emission radiated by the hair at its end surfaces is again measured per unit area of the total area of the hair end surfaces (I 2 ), the I 2 −I 1 value is calculated and used for assessing the hair conditions.