US 10,376,454 B2
Products for the oxidative dyeing of hair in copper shades with improved gray coverage
Constanze Neuba, Grevenbroich (DE); and Burkhard Mueller, Duesseldorf (DE)
Assigned to Henkel AG & Co. KGaA, Dusseldorf (DE)
Appl. No. 15/578,289
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
PCT Filed May 31, 2016, PCT No. PCT/EP2016/062232
§ 371(c)(1), (2) Date Nov. 30, 2017,
PCT Pub. No. WO2017/001132, PCT Pub. Date Jan. 5, 2017.
Claims priority of application No. 10 2015 212 003 (DE), filed on Jun. 29, 2015.
Prior Publication US 2018/0140524 A1, May 24, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. A61Q 5/10 (2006.01); A61K 8/49 (2006.01); A61K 8/41 (2006.01); A61Q 5/06 (2006.01)
CPC A61K 8/494 (2013.01) [A61K 8/411 (2013.01); A61K 8/415 (2013.01); A61K 8/4926 (2013.01); A61Q 5/065 (2013.01); A61Q 5/10 (2013.01); A61K 2800/88 (2013.01)] 16 Claims
 
1. Agent for the oxidative dyeing of keratinous fibers, comprising in a cosmetic carrier:
(A) 1-(2-Hydroxyethyl)-4,5-diaminopyrazole and/or one of the physiologically-tolerated salts thereof;
(B) 2,6-dihydroxy-3,4-dimethylpyridine; and
(C) toluene-2,5-diamine and/or one of the physiologically-tolerated salts thereof;
wherein the weight ratio of (A) to (C) is from about 1.0 to about 8.0.