Compositions for dyeing keratin fibers

1 . A composition for dyeing keratin fibers, comprising, in a cosmetically acceptable medium, based on a total weight of the composition:

a) at least one anionic surfactant;

b) at least one cationic surfactant comprising cetrimonium chloride;

c) at least one alkoxylated C 6 -C 24 fatty alcohol;

d) at least one C 6 -C 24 fatty alcohol;

e) at least one oxidation dye;

f) about 0.1-10 wt. % of ammonia,

wherein the ammonia is the only alkalizing agent present in the composition such that the composition is free from carbonates, alkanolamines and C 1 -C 4 alkyl alkanolamines, fatty acid salts thereof, or mixtures thereof, and

wherein the composition exhibits optical anisotropy.

2 . The dyeing composition according to claim 1 , wherein the composition comprises about 0.001-10 wt. % of the at least one oxidation dye, and wherein the composition comprises about 0.2-7.5 wt. % of the ammonia.

3 . The dyeing composition according to claim 1 , wherein the at least one anionic surfactant is selected from alkyl ether carboxylates, alkyl sulfates, alkyl ether sulfates, amide ether sulfates, alkyl glyceride sulfates, olefin sulfonates, alkyl-aryl sulfonates, sulfosuccinates, sulfo fatty acid esters, fatty acid isethionates, fatty acid taurides, phosphate esters, acyl glutamates, acyl peptides, acyl sarcosides, and mixtures thereof.

4 . The dyeing composition according to claim 3 , wherein the at least one anionic surfactant is selected from alkyl ether carboxylates, alkyl ether sulfates, olefin sulfonates, and mixtures thereof.

5 . The dyeing composition according to claim 1 , wherein the at least one cationic surfactant is further selected from C 6 -C 24 alkyl trimethyl quaternary ammonium salts, C 6 -C 24 alkyl dimethyl benzyl quaternary ammonium salts, C 6 -C 24 dialkyl dimethyl quaternary ammonium salts, and mixtures thereof.

6 . The dyeing composition according to claim 1 , wherein the at least one alkoxylated C 6 -C 24 fatty alcohol is selected from ethoxylated palmytil (cetyl) alcohol, ethoxylated palmitoyl alcohol, ethoxylated stearyl alcohol, ethoxylated cetearyl alcohol, ethoxylated isostearyl alcohol, ethoxylated 2-octyldodecanol, ethoxylated 2-ethylhexanoyl alcohol, ethoxylated oleyl alcohol, and mixtures thereof.

7 . The dyeing composition according to claim 1 , wherein the at least one C 6 -C 24 fatty alcohol is selected from palmytil (cetyl) alcohol, palmitoyl alcohol, stearyl alcohol, cetearyl alcohol, isostearyl alcohol, 2-octyldodecanol, 2-ethylhexanoyl alcohol, oleyl alcohol, behenyl alcohol, erucyl alcohol, and mixtures thereof.

8 . The dyeing composition according to claim 1 , wherein:

a) the at least one anionic surfactant is selected from alkyl ether carboxylates, alkyl sulfates, alkyl ether sulfates, amide ether sulfates, alkyl glyceride sulfates, olefin sulfonates, alkyl-aryl sulfonates, sulfosuccinates, sulfo fatty acid esters, fatty acid isethionates, fatty acid taurides, phosphate esters, acyl glutamates, acyl peptides, acyl sarcosides, and mixtures thereof;

b) the at least one cationic surfactant is further selected from C 6 -C 24 alkyl trimethyl quaternary ammonium salts, C 6 -C 24 alkyl dimethyl benzyl quaternary ammonium salts, C 6 -C 24 dialkyl dimethyl quaternary ammonium salts, and mixtures thereof;

c) the at least one alkoxylated C 6 -C 24 fatty alcohol is selected from ethoxylated palmytil (cetyl) alcohol, ethoxylated palmitoyl alcohol, ethoxylated stearyl alcohol, ethoxylated cetearyl alcohol, ethoxylated isostearyl alcohol, ethoxylated 2-octyldodecanol, ethoxylated 2-ethylhexanoyl alcohol, ethoxylated oleyl alcohol, and mixtures thereof;

d) the at least one C 6 -C 24 fatty alcohol is selected from palmytil (cetyl) alcohol, palmitoyl alcohol, stearyl alcohol, cetearyl alcohol, isostearyl alcohol, 2-octyldodecanol, 2-ethylhexanoyl alcohol, oleyl alcohol, behenyl alcohol, erucyl alcohol, and mixtures thereof;

e) the composition comprises about 0.001-10 wt. % of the at least one oxidation dye; and

f) the composition comprises about 0.2-7.5 wt. % of the ammonia.

9 . The dyeing composition according to claim 1 , wherein the keratin fibers are human hair.

10 . A dyeing composition for dyeing keratin fibers obtained by the process comprising the steps of:

i) adding at least one anionic surfactant, at least one alkoxylated C 6 -C 24 fatty alcohol, at least one C 6 -C 24 fatty alcohol and at least one oxidation dye to a water phase at a temperature from about 50° C. to about 90° C. and under agitation to form an emulsion;

ii) cooling the emulsion obtained in step (i) to a temperature from about 30° C. to about 50° C. and under agitation; and

iii) adding at least one cationic surfactant and ammonia to the emulsion obtained in step (ii) under agitation, the at least one cationic surfactant comprising cetrimonium chloride,

wherein the dyeing composition includes about 0.1-10 wt. % of ammonia,

wherein the ammonia is the only alkalizing agent present in the composition such that the composition is free from carbonates, alkanolamines and C1-C4 alkyl alkanolamines, fatty acid salts thereof, or mixtures thereof, and

wherein the composition exhibits optical anisotropy.

11 . A multi-compartment device for dyeing keratin fibers comprising at least two compartments packaged separate from one another, wherein one compartment comprises the composition for dyeing keratin fibers of claim 1 ; and a second compartment comprises a hydrogen peroxide composition.