	US 11,896,701 B2
	Method for dyeing keratin material, comprising the use of an organic C1-C6 alkoxy silane and tannic acid
Phillip Jaiser, Langenfeld (DE); Marc Nowottny, Moenchengladbach (DE); Carsten Mathiaszyk, Essen (DE); Gabriele Weser, Neuss (DE); Torsten Lechner, Langenfeld (DE); Caroline Kriener, Duesseldorf (DE); Juergen Schoepgens, Schwalmtal (DE); Ulrike Schumacher, Duesseldorf (DE); Claudia Kolonko, Remscheid (DE); and Udo Erkens, Willich (DE)
Assigned to HENKEL AG & CO. KGAA, Duesseldorf (DE)
Appl. No. 17/785,874
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
PCT Filed Oct. 16, 2020, PCT No. PCT/EP2020/079170 § 371(c)(1), (2) Date Jun. 15, 2022, PCT Pub. No. WO2021/121718, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 102019219715.9 (DE), filed on Dec. 16, 2019.
Prior Publication US 2023/0063028 A1, Mar. 2, 2023
Int. Cl. A61Q 5/10 (2006.01); A61K 8/58 (2006.01); A61K 8/49 (2006.01)

CPC A61K 8/585 (2013.01) [A61K 8/498 (2013.01); A61Q 5/10 (2013.01); A61K 2800/4324 (2013.01); A61K 2800/884 (2013.01)]

14 Claims

1. A method of dyeing keratinous material, the method comprising the steps of:

applying a first composition (A) to the keratinous material, the first composition (A) comprising:

(A1) one or more organic C₁-C₆alkoxysilanes and/or condensation products thereof, and

(A2) at least one colorant compound selected from the group of pigments, direct dyes, or combinations thereof, and

applying a second composition (B) to the keratinous material, the second composition (B) comprising:

(B1) Tannic acid.