US 11,654,122 B2
Systems, methods, and kits for altering the color of the hair
Zhengzheng Liao, Cranford, NJ (US); Martin Asare, Springfield, NJ (US); Guojin Zhang, Westfield, NJ (US); Sivaramakrishnan Muthukrishnan, Bridgewater, NJ (US); Aakash Jagat Parekh, Edison, NJ (US); and Yuri Lvov, Ruston, LA (US)
Assigned to L'OREAL, Paris (FR)
Filed by L'Oreal, Paris (FR)
Filed on Mar. 31, 2021, as Appl. No. 17/219,868.
Prior Publication US 2022/0323382 A1, Oct. 13, 2022
Int. Cl. A61Q 5/10 (2006.01); A61K 31/14 (2006.01); A61Q 5/06 (2006.01)
CPC A61K 31/14 (2013.01) [A61Q 5/065 (2013.01); A61K 2800/884 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of altering the color of hair comprising:
(a) applying to the hair a pretreatment composition comprising at least one cationic surfactant and at least one solvent, and
(b) applying to the hair a dyeing composition comprising at least one microtube-dye composite and at least one solvent,
wherein, in the microtube-dye composite, the dye comprises at least one anionic or neutral hair dyeing agent.