Hair treatment composition

A hair treatment composition having cleaning and conditioning properties comprising, in an aqueous medium:

• (i) a first cationic surfactant corresponding to the general formula (I):
• [N(R1)(R2)(R3)(R4)]+(X)−
• in which R1 is a hydrocarbyl chain having from 10 or more carbon atoms, and R2, R3 and R4 are independently selected from hydrocarbyl chains of from 1 to about 30 carbon atoms, X is a salt-forming anion selected from the group consisting of halogen, acetate, citrate, lactate, glycolate, phosphate, nitrate, sulphate, and alkylsulphate radicals, and the total sum of the number of carbon atoms in R1, R2, R3 and R4 is 22 or greater;
• (ii) a second cationic surfactant corresponding to the general formula (II) or the general formula (III);
• general formula (II) being:
• [N(R1)(R2)(R3)(R4)]+(X)−
• in which R1 is a hydrocarbyl chain having from 8 to 14 carbon atoms, and R2, R3 and R4 are independently selected from (a) hydrocarbyl chains of from 1 to about 30 carbon atoms, or (b) functionalised hydrocarbyl chains having from 1 to about 30 carbon atoms and containing one or more aromatic, ether, ester, amido or amino moieties present as substituents or as linkages in the radical chain, X is a salt-forming anion selected from the group consisting of halogen, acetate, citrate, lactate, glycolate, phosphate, nitrate, sulphate, and alkylsulphate radicals, and at least one of the R1 to R4 radicals contains one or more hydrophilic moieties selected from the group consisting of alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl, alkylester, and combinations thereof,
• and general formula (III) being:
• [N(R1)(R2)(R3)(R4)]+(X)+
• in which
• R1 is a linear or branched, saturated or unsaturated hydrocarbyl chain having from 5 to 30 carbon atoms, which is linked either directly to the quaternary nitrogen atom or via a functionalised link moiety such as an alkylester, alkylamido or an alkoxy, or combinations thereof;
• R2 is a linear or branched, saturated or unsaturated hydrocarbyl chain having from 1 to 30 carbon atoms, and is optionally substituted with one or more hydroxy groups;
• R3 is a linear or branched, saturated or unsaturated hydrocarbyl chain having from 1 to 30 carbon atoms, and optionally contains one or more groups selected from the group consisting of hydroxy, alkoxy and polyoxyalkylene groups, and combinations thereof, present as either substituents on the hydrocarbyl chain or as linkages in the hydrocarbyl chain;
• R4 is a linear or branched saturated or unsaturated hydrocarbyl chain having from 1 to 30 carbon atoms, and which contains one or more groups selected from the group consisting of hydroxy, aromatic, ether, ester, amido and amino groups, and combinations thereof, present as either substituents on the hydrocarbyl chain or as linkages in the hydrocarbyl chain;
• and,
• X is a salt-forming anionic selected from the group consisting of halogen, acetate, citrate, lactate, glycolate, phosphate, nitrate, sulphate, and alkylsulphate radicals;
• and wherein the first cationic surfactant (i) and second cationic surfactant (ii) together amount to more than 2% by weight of the hair treatment composition;
• and wherein said hair treatment composition further comprises a 12 to 22 carbon chain fatty alcohol present in a weight ratio relative to cationic surfactant (i) from 10:1 to 1:10 for maintaining good cosmetic in-use and rheologic characteristics.