	US 11,931,449 B2
	Hair dyeing process using at least one silicone comprising at least one carboxylic acid anhydride group, at least one amino silicone and at least one pigment and/or direct dye
Alexis Liard, Saint-Ouen (FR); and Chrystel Pourille, Saint-Ouen (FR)
Assigned to L'OREAL, Paris (FR)
Appl. No. 17/784,917
Filed by L'OREAL, Paris (FR)
PCT Filed Nov. 24, 2020, PCT No. PCT/EP2020/083219 § 371(c)(1), (2) Date Jun. 13, 2022, PCT Pub. No. WO2021/121882, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 1914534 (FR), filed on Dec. 16, 2019.
Prior Publication US 2023/0040319 A1, Feb. 9, 2023
Int. Cl. A61Q 5/10 (2006.01); A61K 8/19 (2006.01); A61K 8/894 (2006.01); A61K 8/898 (2006.01)

CPC A61K 8/898 (2013.01) [A61K 8/19 (2013.01); A61K 8/894 (2013.01); A61Q 5/10 (2013.01); A61K 2800/43 (2013.01); A61K 2800/594 (2013.01); A61K 2800/884 (2013.01)]

15 Claims

1. A process for treating keratin fibers, comprising: applying to the keratin fibers:

a) at least one silicone comprising at least one carboxylic acid anhydride group,

b) at least one amino silicone; and

c) at least one coloring agent chosen from pigments, direct dyes and mixtures thereof,

wherein the a) at least one silicone, b) at least one amino silicone, and c) at least one coloring agent are applied to the keratin fibers, together or separately, in one or more compositions.