Patent · US Active

Method and device for determining a degree of thermal damage to hair

US11564618B2 · kind B2 · utility

0Cited by

0References

10Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Burkhard Mueller · Goldkronach, DE
Torsten Lechner · Langenfeld, DE

Key dates

Filing date	Aug 13, 2018
Grant date	Jan 31, 2023
Priority date	—
Expiry date	Jun 19, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/12753
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and a device for determining a degree of thermal hair damage are provided. A method for determining a degree of thermal hair damage includes, during exposure of a hair sample of hair to UV or UV/VIS light, recording a spectrum of at least a portion of the UV or UV/VIS light that has interacted with the hair sample. Further, the method includes comparing at least a portion of the spectrum with a spectroscopic calibration model obtained using UV or UV/VIS spectra and degrees of thermal damage of a plurality of calibration hair samples. Also, the method includes determining the degree of thermal hair damage by using the comparison.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.