US 12,383,482 B2
Hair coloring compositions
Viktoriya Sendyureva, Frankfurt am Main (DE); Manfred Guenther Schmitt, Bensheim (DE); Frank Veverka, Zwingeberg (DE); Felix Herkner, Eppstein (DE); and Bjorn Timo Hoffmann, Darmstadt (DE)
Assigned to Wella Germany GmBH, Darmstadt (DE)
Appl. No. 18/254,572
Filed by Wella Germany GmBH, Darmstadt (DE)
PCT Filed Nov. 26, 2021, PCT No. PCT/EP2021/083105
§ 371(c)(1), (2) Date Dec. 11, 2023,
PCT Pub. No. WO2022/112473, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 20210145 (EP), filed on Nov. 26, 2020.
Prior Publication US 2024/0024218 A1, Jan. 25, 2024
Int. Cl. A61Q 5/10 (2006.01); A61K 8/19 (2006.01); A61K 8/22 (2006.01); A61K 8/24 (2006.01); A61K 8/34 (2006.01); A61K 8/362 (2006.01); A61K 8/41 (2006.01); A61K 8/44 (2006.01); A61K 8/49 (2006.01); A61K 8/55 (2006.01); A61Q 5/12 (2006.01)
CPC A61K 8/556 (2013.01) [A61K 8/19 (2013.01); A61K 8/22 (2013.01); A61K 8/24 (2013.01); A61K 8/34 (2013.01); A61K 8/342 (2013.01); A61K 8/345 (2013.01); A61K 8/347 (2013.01); A61K 8/362 (2013.01); A61K 8/41 (2013.01); A61K 8/411 (2013.01); A61K 8/415 (2013.01); A61K 8/44 (2013.01); A61K 8/494 (2013.01); A61Q 5/10 (2013.01); A61Q 5/12 (2013.01); A61K 2800/43 (2013.01); A61K 2800/4322 (2013.01); A61K 2800/48 (2013.01); A61K 2800/51 (2013.01); A61K 2800/882 (2013.01)] 16 Claims
 
1. A kit comprising a dye component and an oxidative component, for obtaining a hair coloring composition upon the mixing of the dye component and the oxidative component in a weight ratio from 3:1 to 1:3, wherein the hair coloring composition has a pH of about 7.2 to 7.9 upon mixing and a pH of about 6.5 to 7 after at least about 20 minutes post mixing;
wherein the dye component has a pH from 8.5 to 10, and comprises, by total weight of the dye component:
at least one alkalizing agent present in an amount from 0.2 to 4%;
a chelant mixture of EDTA and EDDS present in an amount of the mixture of from 1.2 to 1.8%;
at least one buffering acidic compound present in an amount from 0.01 to 0.6%; wherein the buffering acidic compound is citric acid;
at least one anionic surfactant present in an amount from 0.2 to 1%;
at least one fatty alcohol present in an amount from 1.6 to 2.5%;
at least one non-ionic surfactant present in an amount from 0.1 to 0.5%;
at least one oxidative hair dye precursor and at least one coupler present altogether in an amount of 20% or less; and
at least one solvent present in an amount from at least 50%; and
wherein the oxidative component has a pH from 1.8 to 3.5, and comprises, by total weight of the oxidative component:
at least one oxidizing agent present in an amount from 1 to 3%;
at least one buffering acidic compound present in an amount from 0.15 to 0.5%; wherein the buffering acidic compound is phosphoric acid;
at least one buffering alkali compound present in an amount from 0.2 to 0.6%; wherein the buffering alkali compound is disodium phosphate; and
wherein the % of phosphoric acid is lower than or equal to the % of disodium phosphate; and
at least one solvent present in an amount from at least 50%.