US 12,403,074 B2
Process for permanent waving keratin fibers
Jörg Schneider, Darmstadt (DE); Jens Heilmann, Darmstadt (DE); and Sabine Schaefer, Darmstadt (DE)
Assigned to KAO GERMANY GMBH, Darmstadt (DE)
Appl. No. 17/297,567
Filed by KAO GERMANY GMBH, Darmstadt (DE)
PCT Filed Dec. 10, 2019, PCT No. PCT/EP2019/084520
§ 371(c)(1), (2) Date May 27, 2021,
PCT Pub. No. WO2020/120513, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 18211548 (EP), filed on Dec. 11, 2018.
Prior Publication US 2022/0023167 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/19 (2006.01); A45D 7/04 (2006.01); A61K 8/22 (2006.01); A61K 8/24 (2006.01); A61K 8/36 (2006.01); A61K 8/362 (2006.01); A61K 8/41 (2006.01); A61K 8/46 (2006.01); A61Q 5/04 (2006.01)
CPC A61K 8/19 (2013.01) [A45D 7/04 (2013.01); A61K 8/22 (2013.01); A61K 8/24 (2013.01); A61K 8/36 (2013.01); A61K 8/362 (2013.01); A61K 8/41 (2013.01); A61K 8/46 (2013.01); A61Q 5/04 (2013.01); A61K 2800/48 (2013.01); A61K 2800/884 (2013.01)] 14 Claims
 
1. A process for permanently waving keratin fibers, the process comprising:
a—washing/shampooing and optionally, towel drying keratin fibers;
b applying a first composition onto the keratin fibers and leaving the first composition on the keratin fibers for a period ranging from 1 minute (min) 60 min, the first composition being an aqueous composition comprising one or more reducing agents;
c—rinsing the first composition off the keratin fibers;
d—putting the keratin fibers onto one or more curlers;
e—applying a second composition onto the keratin fibers and leaving the second composition on the keratin fibers for a period ranging from 1 min to 60 min, the second composition being a non-reducing and non-oxidizing aqueous composition comprising one or more alkalizing agents and having a pH ranging from 7.5 to 12;
f—applying a third composition onto the keratin fibers and leaving the third composition on the keratin fibers hair for a period ranging from 1 min to 60 min, the third composition being a non-reducing and non-oxidizing aqueous composition comprising one or more organic acids and/or one or more inorganic acids and having a pH ranging from 2 to 6.5;
g—rinsing the second composition and the third composition off the keratin fibers;
h—applying a fourth composition onto the keratin fibers and leaving the fourth composition on the keratin fibers for a period ranging from 1 min to 30 min, the fourth composition being an aqueous composition comprising one or more oxidizing agents;
i—rinsing the fourth composition off the keratin fibers; and
j—drying the keratin fibers,
wherein
the one or more curlers are taken off the keratin fibers after the step i prior to rinsing of and/or drying, and
the process as a whole is carried out at ambient temperature without using any heat and/or heating device.