US 12,274,772 B2
Bleaching composition for keratin fibers
Peter Bauer, Darmstadt (DE); Steven Breakspear, Darmstadt (DE); Bernd Nöcker, Darmstadt (DE); and Ines Rabelo De Moraes, Darmstadt (DE)
Assigned to KAO CORPORATION, Tokyo (JP)
Filed by KAO CORPORATION, Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/652,518.
Claims priority of application No. 21159628 (EP), filed on Feb. 26, 2021.
Prior Publication US 2022/0273535 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/22 (2006.01); A61K 8/23 (2006.01); A61K 8/25 (2006.01); A61K 8/34 (2006.01); A61K 8/46 (2006.01); A61K 8/60 (2006.01); A61K 8/73 (2006.01); A61Q 5/08 (2006.01)
CPC A61K 8/22 (2013.01) [A61K 8/23 (2013.01); A61K 8/25 (2013.01); A61K 8/342 (2013.01); A61K 8/463 (2013.01); A61K 8/60 (2013.01); A61K 8/731 (2013.01); A61Q 5/08 (2013.01); A61K 2800/882 (2013.01)] 9 Claims
 
1. A kit-of-parts for bleaching keratin fibers, comprising
a bleaching composition A comprising
a) one or more persalt(s) and/or peroxy salt(s) at a total concentration in the range of 20% to 80% by weight, calculated to the total weight of the bleaching composition A, and
b) one or more alkalizing agent(s) selected from metasilicates, carbonates, bicarbonates, and/or their alkali or earth alkali salts, at a total concentration in the range of 1% to 20% by weight, calculated to the total weight of the bleaching composition A;
an aqueous oxidizing composition B having a pH in a range of 1 to 6 and comprising hydrogen peroxide; and
a composition C comprising
c) mannitol, at a total concentration in the range of 0.001% to 5% by weight, calculated to the total weight of the composition C, wherein the bleaching composition A comprises less than 5% by weight of water, calculated to the total weight of the bleaching composition A,
wherein a total concentration of mannitol in a ready-to-use mixture obtained by mixing the bleaching composition A, the aqueous oxidizing composition B, and the composition C, is in the range of 0.00002% to 0.05% by weight, calculated to the total weight of the ready-to-use mixture.