US 12,350,360 B2
Cosmetic product for dyeing keratin fibers
Bernd Nöcker, Darmstadt (DE); Qi Uellner, Darmstadt (DE); and Steven Breakspear, Darmstadt (DE)
Assigned to KAO CORPORATION, Tokyo (JP)
Appl. No. 18/554,833
Filed by KAO CORPORATION, Tokyo (JP)
PCT Filed Apr. 26, 2022, PCT No. PCT/EP2022/061027
§ 371(c)(1), (2) Date Oct. 11, 2023,
PCT Pub. No. WO2022/229168, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 21170400 (EP), filed on Apr. 26, 2021.
Prior Publication US 2024/0197606 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61Q 5/10 (2006.01); A61K 8/22 (2006.01); A61K 8/41 (2006.01); A61K 8/46 (2006.01); A61K 8/49 (2006.01); A61Q 5/06 (2006.01)
CPC A61K 8/4953 (2013.01) [A61K 8/22 (2013.01); A61K 8/41 (2013.01); A61K 8/466 (2013.01); A61K 8/4946 (2013.01); A61Q 5/065 (2013.01); A61K 2800/4322 (2013.01); A61K 2800/882 (2013.01)] 20 Claims
 
1. A cosmetic product, comprising:
a composition A comprising one or more alkalizing agents and one or more direct dyes; and
an aqueous composition B having a pH in a range of 1 to 6 and comprising:
hydrogen peroxide; and
one or more compounds selected from the following groups:

OG Complex Work Unit Chemistry
wherein R1, R2, and R3 are independently selected from H and CH3,
2) one or more orthodiphenols or derivative or salt thereof, and
3) one or more imidazolidin-2,4-diones or a derivative or salt thereof.