Hair cosmetic compositions containing thiol-based compounds and methods for cleansing and treating hair

A hair cosmetic composition comprising:

• a) at least one anionic surfactant selected from sulfate surfactants in an amount of from 10% to about 18% by weight;
• b) at least one amphoteric surfactant selected from (C8-C20)alkylbetaines in an amount of from about 0.8% to about 6% by weight;
• c) thiolactic acid, a salt thereof, or a mixture thereof in an amount of from about 0.7% to about 12% by weight;
• d) at least one thickening agent selected from hydroxyethylcellulose (also known as HEC), hydroxymethylcellulose, methylhydroxyethylcellulose, hydroxypropylcellulose (also known as HPC), hydroxybutylcellulose, hydroxyethylmethylcellulose (also known as methyl hydroxyethylcellulose) and hydroxypropylmethylcellulose (also known as HPMC), cetyl hydroxyethylcellulose, hydroxypropyl guar gums, acrylate/C10 C30 alkyl acrylate copolymers, carbomers, polyacrylates, potato starch modified, and mixtures thereof in an amount of from about 0.05% to about 1% by weight;
• e) at least one nonionic surfactant selected from fatty alcohols, alkoxylated fatty alcohols, alkyl(ether)phosphates, alkylpolyglucosides, fatty acid alkanolamides, and mixtures thereof;
• f) water;
• g) optionally, at least one cationic conditioning polymer;
• and
• h) optionally, at least one neutralizing agent;
• wherein the pH of the composition ranges from about pH 3 to 4.5;
• and
• all weights being relative to the total weight of the cosmetic composition.

A hair cosmetic composition comprising:

• a) at least one anionic surfactant selected from sulfonate surfactants, carboxylic (carboxylate) surfactants, and mixtures thereof in an amount of from 10% to about 18% by weight;
• b) at least one amphoteric surfactant selected from (C8-C20)alkylbetaines, (C8-C20)alkylamido (C1-C6)alkylbetaines, sulfobetaines, (C8-C20)alkylsulfobetaines, (C8-C20)alkylamido(C1-C6)alkylsulfobetaines, (C8-C20)alkylamphoacetate, (C8-C20)alkylamphodiacetate, and their salts, and mixtures thereof in an amount of from about 0.8% to about 6% by weight;
• c) thiolactic acid, a salt thereof, or a mixture thereof in an amount of from about 0.7% to about 12% by weight;
• d) at least one thickening agent selected from hydroxyethylcellulose (also known as HEC), hydroxymethylcellulose, methylhydroxyethylcellulose, hydroxypropylcellulose (also known as HPC), hydroxybutylcellulose, hydroxyethylmethylcellulose (also known as methyl hydroxyethylcellulose) and hydroxypropylmethylcellulose (also known as HPMC), cetyl hydroxyethylcellulose, hydroxypropyl guar gums, acrylate/C10 C30 alkyl acrylate copolymers, carbomers, polyacrylates, potato starch modified, and mixtures thereof in an amount of from about 0.05% to about 1% by weight;
• e) at least one nonionic surfactant selected from fatty alcohols, alkoxylated fatty alcohols, alkyl(ether)phosphates, alkylpolyglucosides, fatty acid alkanolamides, and mixtures thereof;
• f) water;
• g) optionally, at least one cationic conditioning polymer;
• and
• h) optionally, at least one neutralizing agent;
• wherein the pH of the composition ranges from about pH 3 to 4;
• and
• all weights being relative to the total weight of the cosmetic composition.