US 12,458,576 B2
Method for removing color from artificially colored hair
Sarah Mary Speer, Linden, NJ (US); and Shahid Mohammad Naseer, Hasbrouck Heights, NJ (US)
Assigned to L'OREAL, Paris (FR)
Filed by L'OREAL, Paris (FR)
Filed on Sep. 29, 2022, as Appl. No. 17/936,431.
Prior Publication US 2024/0122833 A1, Apr. 18, 2024
Int. Cl. A61K 8/46 (2006.01); A61K 8/23 (2006.01); A61K 8/73 (2006.01); A61K 8/81 (2006.01); A61Q 5/08 (2006.01)
CPC A61K 8/46 (2013.01) [A61K 8/23 (2013.01); A61K 8/73 (2013.01); A61K 8/8152 (2013.01); A61K 8/8158 (2013.01); A61Q 5/08 (2013.01); A61K 2800/48 (2013.01); A61K 2800/88 (2013.01)] 18 Claims
 
1. A method for removing color from oxidatively colored hair comprising:
(I) applying a reducing composition to hair that has been colored with oxidation dyes, the reducing composition comprising:
(a) one or more sulfur-containing reducing agents selected from alkaline-earth metal sulfites, ammonia sulfites, thiol-based compounds, a salt thereof, and a combination thereof; and
(b) water;
wherein the reducing composition is free from oxidative dye precursors;
(II) rinsing the reducing composition from the hair and optionally shampooing the hair;
(III) applying an alkalizing composition to the hair, the alkalizing composition comprising:
(a) about 2 to about 15 wt. % of one or more organic alkalizing agents, based on a total weight of the alkalizing composition; and
(b) water; and
(IV) rinsing the reducing composition from the hair and optionally shampooing the hair;
wherein (I) and (II) can be carried out before (III) and (IV), or (III) and (IV) can be carried out before (I) and (II);
the method removes color from the colored hair; and
the method does not comprise treating the hair with an oxidizing agent.