公开(公告)号：US20190090614A1

公开(公告)日：2019-03-28

申请号：US16086864

申请日：2017-03-22

Applicant: L'OREAL

Inventor： Benjamin ASKENAZI ,  Johan AUBERT

IPC: A45D44/00 ,  G01J3/50 ,  G01J3/46

CPC classification number: A45D44/005 ,  A45D44/00 ,  A45D2044/007 ,  G01J3/462 ,  G01J3/50 ,  G01J2003/467

Abstract: The invention relates to a method for determining the color of a cosmetic product adapted to the skin of a wearer of the cosmetic product, the method including the following steps:—supply data related to the color of the wearer's skin,—determine the color of the cosmetic product by using a correspondence function applied to data about the color appearance of the wearer's skin, the correspondence function associating a cosmetic product color with a wearer's skin color appearance, the correspondence function having at least three reference associations, a reference association associating a predetermined cosmetic product color with a predetermined wearer skin color within a tolerance, the tolerance being equal to a distance of 2 in the L*a*b* color space.

公开(公告)号：US20190107481A1

公开(公告)日：2019-04-11

申请号：US16087299

申请日：2017-03-23

Applicant: L'OREAL

Inventor： Benjamin ASKENAZI ,  Johan AUBERT

IPC: G01N21/25 ,  G01N21/47 ,  A45D44/00

Abstract: The invention relates to a method for determining the color of a cosmetic product on a skin model, the method including steps to: for a plurality of wavelengths, supply experimental points giving diffusion and/or absorption values for several mixes of a given concentration of one pigment in another pigment, each mix corresponding to different given concentrations, and use a physicochemical model capable of predicting interactions between pigments passing through experimental points to obtain the curve giving the diffusion and/or absorption for each wavelength as a function of the given concentration of pigment in the mix of pigments considered.

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.