US 12,290,589 B2
Cosmetic and personal care compositions containing cationic surfactants and anionic compounds
XianZhi Zhou, Millburn, NJ (US); and Siliu Tan, Westfield, NJ (US)
Assigned to L'OREAL, Paris (FR)
Filed by L'OREAL, Paris (FR)
Filed on Dec. 29, 2020, as Appl. No. 17/136,893.
Prior Publication US 2022/0202686 A1, Jun. 30, 2022
Int. Cl. A61K 8/81 (2006.01); A61K 8/04 (2006.01); A61K 8/34 (2006.01); A61K 8/41 (2006.01); A61K 8/49 (2006.01); A61K 8/898 (2006.01); A61Q 5/12 (2006.01)
CPC A61K 8/8147 (2013.01) [A61K 8/04 (2013.01); A61K 8/342 (2013.01); A61K 8/416 (2013.01); A61K 8/4973 (2013.01); A61K 8/817 (2013.01); A61K 8/898 (2013.01); A61Q 5/12 (2013.01); A61K 2800/10 (2013.01); A61K 2800/5424 (2013.01); A61K 2800/594 (2013.01); A61K 2800/596 (2013.01)] 20 Claims
 
1. A cosmetic composition comprising:
(a) at least 0.3 wt. % of at least one non-hydrophobically modified anionic copolymer of two or more monomers selected from acrylic acid, methacrylic acid, or simple esters thereof, wherein the simple esters thereof are selected from methyl, ethyl, propyl, butyl, or pentyl esters;
(b) from about 0.1 to about 5 wt. % of at least one cationic surfactant;
(c) from about 2 to about 9 wt. % of at least one fatty alcohol;
(d) from about 60 to about 90 wt. % of water;
(e) optionally, at least one silicone;
(f) at least one nonionic surfactant; and
(g) at least one fatty compound selected from plant-based oils, hydrocarbon oils, esters, fatty acids, or a mixture thereof; and
wherein the pH of the cosmetic composition is below 5;
the cosmetic composition is an emulsion;
the composition has a lamellar structure that breaks down and viscosity of the cosmetic composition decreases if the pH of the cosmetic composition is raised to 5.6; and
all percentages by weight are based on a total weight of the cosmetic composition.