Hair dyeing process and composition

Abstract

A two part oxidation dyeing method for human hair is provided together with a composition therefor in which both parts are relatively fluid until mixed, after which the combination becomes viscous and can be applied to hair.

What is claimed is: .[.1. A two part composition for hair treating when combined, wherein the two parts are intended to be admixed with each other shortly before use, which comprises 
     
        1 to 10% by weight of a peroxide at a pH of about 1.5 to 5.5..]. 2. The composition according to claim .[.1.]. .Iadd.10 .Iaddend.wherein .[.said polymer is acrylates/steareth 20 methacrylate copolymer and.]. said 
     
     
        peroxide is hydrogen peroxide. 3. The two part hair treating composition according to claim 2 wherein the first part further contains a 
     
     
        tinctorially effective amount of an oxidation hair dye intermediate. 4. The composition according to claim 2 wherein said second part is combined just prior to mixing with said first part from two sub-parts, one containing the acrylate/steareth 20 methacrylate copolymer and the other 
     
     
        the hydrogen peroxide. 5. The composition according to claim 3 wherein the first part further contains an amount of a solvent sufficient to solubilize the hair dye intermediate up to about 20%; said solvent selected from the group consisting of hexylene glycol, propylene glycol, diethylene glycolmonoethyl ether and mixtures of two or more thereof, and said second part further contains 0 to about 0.2% phenacetin, and 0 to 
     
     
        about 0.1% EDTA. 6. The composition according to claim 2 wherein said first part contains 2% hexylene glycol, 4% diethyleneglycolmonoethyl ether, 5.77% ammonia (28%) 2.84% ammonium chloride, 2% sodium lauryl 
     
     
        sulfate (30%), and 0.2% sodium chloride. 7. The composition according to claim 2 wherein said second part contains 10% acrylates/steareth-20 methacrylate copolymer, 12.3% hydrogen peroxide (50%), and 0.04% phenacetin and 0.02% EDTA. .[.8. A method for oxidation dyeing of human hair comprising admixing an aqueous lotion containing a tinctorially effective amount of an oxidation hair dye intermediate, and an alkaline material in an amount sufficient to provide a final pH of about 8 to 12 when admixed with an aqueous developer; and an aqueous developer containing about 0.04 to 25% by weight of a polymer of an ester of a C 16  to C 22  carboxylic acid and a polyalkylene glycol ester of a C 16  to C 22  alcohol and two or more monomers consisting of C 16  to C 22  carboxylic acid or their esters, and 1 to 10% by weight of a peroxide at a pH of about 1.5 to 5.5; the lotion and the developer being thin emulsions which upon said admixing thicken to produce a thickened emulsion; then applying the thickened emulsion to the hair for a period of time sufficient for the dyeing process to take place..]. .[.9. The method according to claim 8 wherein the aqueous developer contains an aqueous emulsion of hydrogen peroxide and acrylates/steareth-20 
     
     
        methacrylate copolymer..]. .Iadd.10.  A two part composition for hair treating when combined, wherein the two parts are intended to be admixed with each other shortly before use, which comprises: (a) an aqueous first part containing an alkaline material in an amount sufficient to provide a final pH of about 8 to 12 when admixed with a second part, and   (b) an aqueous second part containing about 0.04 to 25% by weight of a copolymer of an acrylates/steareth 20 methacrylate and about 1 to 10% by   
     
     
        weight of a peroxide at a pH of about 1.5 to 5.5. .Iaddend. .Iadd.11.  A method for oxidation dyeing of human hair comprising admixing an aqueous lotion containing a tinctorially effective amount of an oxidation hair dye intermediate, and an alkaline material in an amount sufficient to provide a final pH of about 8 to 12 when admixed with an aqueous developer; and an aqueous developer containing about 0.04 to 25% by weight of a copolymer of an acrylates/steareth 20 methacrylate and about 1 to 10% by weight of a peroxide at a pH of about 1.5 to 5.5; the lotion and the developer being thin emulsions which upon said admixing thicken to produce a thickened emulsion; then applying the thickened emulsion to the hair for a period of time sufficient for the dyeing process to take place. .Iaddend.