US 12,268,767 B2
Compositions and methods for treating hair
Ronak Rughani, Edison, NJ (US); Cho-Cho Khine, Scotch Plain, NJ (US); David Ladd, Kenilworth, NJ (US); and Yamini Patel, East Brunswick, NJ (US)
Assigned to L'OREAL, Paris (FR)
Filed by L'Oreal, Paris (FR)
Filed on Feb. 28, 2023, as Appl. No. 18/115,715.
Claims priority of provisional application 63/315,075, filed on Feb. 28, 2022.
Claims priority of application No. 2203846 (FR), filed on Apr. 26, 2022.
Prior Publication US 2023/0270641 A1, Aug. 31, 2023
Int. Cl. A61Q 5/10 (2006.01); A61K 8/365 (2006.01); A61K 8/42 (2006.01)
CPC A61K 8/365 (2013.01) [A61K 8/42 (2013.01); A61Q 5/10 (2013.01); A61K 2800/4324 (2013.01); A61K 2800/592 (2013.01); A61K 2800/805 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composition for altering the color or tone of hair comprising:
(a) (i) citric acid, and
(ii) at least one urea compound chosen from urea and/or derivatives thereof;
(b) at least one solvent; and
(c) at least one hair color altering agent chosen from direct dyes, pigments, oxidation dyes, or combinations thereof;
wherein the mole ratio of citric acid to urea compounds ranges from about 0.4:1 to about 3:1.