US 12,257,331 B2
Methods for oxidatively bleaching or coloring hair without damaging the hair
Cho-Cho Khine, Scotch Plains, NJ (US); and Ronak Rughani, Edison, NJ (US)
Assigned to L'OREAL, Paris (FR)
Filed by L'OREAL, Paris (FR)
Filed on Jul. 20, 2023, as Appl. No. 18/355,533.
Prior Publication US 2025/0064698 A1, Feb. 27, 2025
Int. Cl. A61Q 5/10 (2006.01); A61K 8/362 (2006.01); A61Q 5/06 (2006.01)
CPC A61K 8/362 (2013.01) [A61Q 5/06 (2013.01); A61Q 5/10 (2013.01); A61K 2800/4322 (2013.01); A61K 2800/48 (2013.01); A61K 2800/5426 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for protecting hair and mitigating damage to the hair from oxidative bleaching or coloring of the hair, the method comprising:
(i) applying a fortifying composition to hair to be oxidatively bleached or colored and allowing the fortifying composition to remain on the hair for a first period of time, the fortifying composition comprising:
(a) citric acid;
(b) cyclodextrin;
wherein a combined total amount of (i)(a) and (i)(b) is about 2 to about 15 wt. %;
(c) one or more polyols having from 2 to 10 carbon atoms; and
(d) water;
wherein all weight percentages of (i) are based on a total weight of the fortifying composition;
(ii) upon expiration of the first period of time, without rinsing the fortifying composition from the hair, applying an oxidative bleaching or coloring composition to the hair and oxidatively bleaching or coloring the hair;
(iii) after oxidatively bleaching or coloring the hair, cleansing the hair with a shampoo to remove the oxidative bleaching or coloring composition from the hair;
(iv) after rinsing the shampoo from the hair, applying a conditioning composition to the hair and allowing the conditioning composition to remain on the hair for a second period of time, the conditioning composition comprising;
(a) one or more cationic surfactants;
(b) one or more non-silicone based fatty compounds;
(c) one or more silicones; and
(d) water; and
(v) upon expiration of the second period of time, rinsing the conditioning composition from the hair upon expiration of the second period of time.