公开(公告)号：US20220175112A1

公开(公告)日：2022-06-09

申请号：US17442365

申请日：2020-03-25

Applicant: L'OREAL

Inventor： Benjamin ASKENAZI ,  Johan AUBERT ,  Jean-Dominique BAZIN DE BEZONS ,  Olivier LESEUR ,  Romain RONCIN

IPC: A45D44/00 ,  B44D3/00 ,  G06Q30/06

Abstract: The present invention relates to a method for determining a parameter specific to the custom-made coloring of hairs of a given individual, the method including the following steps: receiving magnitudes representative of a first target color and of a first initial color in a colorimetric space, determining a cosmetic product composition according to magnitudes received and a colorimetric rendering model, applying a cosmetic product having the determined composition on the hairs to be colored of the individual in order to obtain colored hairs, evaluating the color of the colored hairs in order to a magnitude representative of a first final color in the colorimetric space, and determining a colorimetric deviation parameter specific to the individual according to magnitudes representative of the first final color and of the first target color.