Hair colorant compositions
The present invention relates to hair coloring and/or bleaching compositions that can be applied at less aggressive pH environment using relatively low oxidizing agent amounts, as well as their kits and methods thereof. The compositions exhibit low odor and substantially reduced hair fiber damage, are compatible with current dyes and dye precursor systems and result in excellent dye deposition with substantially no lift.
1 . An aqueous hair coloring composition comprising:
i) at least one primary dye and at least one dye coupler, each selected to give hair color in the CIE L*a*b* grey color space and hair color that fades in the CIE L*a*b* grey color space, and wherein the at least one dye coupler is not resorcinol;
ii) a buffering system comprising phosphoric acid and mono-and/or di-sodium phosphate;
iii) about 0.5 wt. % to about 1.5 wt. % of at least one oxidizing agent relative to the total weight of the hair coloring composition;
iv) at least one gel network thickener system of from 11.6 wt % to about 20 wt % comprising
a) a first surfactant component selected from C14 to 30 alkyl phosphate, C14 to C30 alkyl ether phosphate and a mixture thereof,
b) a second component selected from C14 to C30 fatty alcohols and
c) a third surfactant component selected from polyoxyethylene C14 to C30 alkyl ethers having at least 50 ethylene oxide units;
v) at least 0.05% of a polysaccharide,
vi) at least 3% of a polyol selected from propyleneglycol, butoxydiglycol, ethoxydiglycol, hexylene glycol, dipropylene glycol, glycerol, polyglycerol, and mixtures thereof;
vii) an alkalizer comprising a source of hydroxide ions, carbonate ions, hydrogen carbonate ions or mixtures thereof;
viii) a chelant of from about 0.5 wt % to about 1 wt %, comprising an aminocarboxylic acid, an aminophosphonic acid or a mixture thereof,
wherein the hair coloring composition has a pH of about 6 to about 8; and buffering system maintains the pH of the composition between 6 and 8,
wherein the hair color fades within the CIE L*a*b* grey color space are defined by the following L*a*b* values: −1<a<4, 0<b<12 and 25<L<80, and
wherein the wt %'s are relative to the total weight of the aqueous hair coloring composition.
2 . The aqueous hair coloring composition of according to claim 1 , further comprising at least one conditioning agent wherein the conditioning agent is one or more of silicone materials, amino silicones, fatty alcohols, polymeric resins, polyol carboxylic acid esters, cationic polymers, cationic surfactants, insoluble oils, oil derived materials, mineral oil and mixtures thereof.
3 . A hair coloring composition according to claim 1 , wherein the at least one primary dye is selected from p-aminophenol, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, 3-methyl-p-aminophenol, methoxymethyl-1,4-diaminobenzene, 2,5-toluenediamine sulfate and mixtures thereof; and/or wherein the at least one dye coupler is selected from 4-amino-2-hydroxytoluene, 2-methylresorcinol, hydroxyethyl-3,4-methylenedioxyaniline, and mixtures thereof.
4 . A kit, comprising a first part comprising at least one oxidizing agent and a second part comprising the other components including the at least one precursor and the at least one coupler, for obtaining the aqueous hair coloring composition according to claim 1 .