Polymer Thickened Hair Colouring and Bleaching Compositions

Abstract

The present invention relates to hair colouring and hair bleaching compositions comprising a source of carbonate ions, at least one oxidizing agent and a specified polymer thickner wherein said composition is free of a source of radical scavengers. The compositions surprisingly provide improved hair colourant and bleaching compositions which deliver improved lift, lightening and colour delivery whilst minimizing damage which are easy to manufacture and have long shelf life stability.

1 . A hair colouring or bleaching composition comprising
 i) at least about 0.2 mol/l of a source of carbonate, carbamate, hydrogencarbonate or peroxymonocarbonate ions and mixtures thereof,   ii) at least one oxidizing agent and   iii) at least one polymeric thickener selected from associative polymers, non-associative polycarboxylic polymers, and mixtures thereof, wherein said composition has a pH of up to and including about 9.3 and wherein said composition is free of a source of radical scavengers.   
     
     
         2 . A hair coloring composition according to  claim 1 , wherein said composition further comprises at least one source of alkalizing agent, preferably ammonium ions. 
     
     
         3 . A hair coloring composition according to  claim 1 , wherein said composition has a pH of from about 7.5 to about 9.3. 
     
     
         4 . A hair coloring composition according to  claim 1 , wherein said associative polymeric thickener comprises at least one hydrophilic unit which is a derivative of unsaturated carboxylic acid, and at least one hydrophobic unit which is selected from a C8 to C30 alkyl ester or an oxyethylenated C8 to C30 alkyl ester of unsaturated carboxylic acid. 
     
     
         5 . A hair colouring or bleaching composition according to  claim 4 , wherein said unsaturated carboxylic acid is selected from acrylic acid, methacrylic acid or itaconic acid. 
     
     
         6 . A hair colouring or bleaching composition according to  claim 1 , wherein said associative polymer is a polyether polyurethane comprising at least one fatty chain. 
     
     
         7 . A hair colouring or bleaching composition according to  claim 1 , wherein said associative polymer is a modified cellulose having groups comprising at least one C8 to C30 fatty chain. 
     
     
         8 . A hair colouring or bleaching composition according to  claim 1 , wherein said non-associative polycarboxylic polymer is cross linked acrylic acid homopolymer. 
     
     
         9 . A hair colouring or bleaching composition according to  claim 1 , wherein said non-associative polycarboxylic polymer is a copolymer of methacrylic acid and of Cl to C6 alkyl acrylate or methacrylate or mixtures thereof. 
     
     
         10 . A hair colouring or bleaching kit comprising
 i) an individually packaged oxidizing component comprising at least one source of hydrogen peroxide   ii) an individually packaged second liquid component comprising
 a) at least one polymeric thickener selected from associative polymers, polysaccharides, non-associative polycarboxylic polymers, and mixtures thereof, and 
 b) a source of carbonate ions, carbamate ions or hydrogencarbonate ions and mixture thereof, and 
 c) at least about 10% by weight of a solvent, water, and wherein said kit is free of a source of radical scavengers and upon mixing said components comprises at least about 0.2 mol/l of a source of carbonate ions, carbamate ions, hydrogencarbonate ions or peroxymonocarbonate ions and mixtures thereof, except when said polymeric thickener is an associative polymer when said composition comprises at least about 0.4 mol/l of said source. 
   
     
     
         11 . A hair colouring or bleaching kit comprising
 i) an individually packaged liquid oxidizing component comprising
 a) at least one source of hydrogen peroxide, and 
 b) at least polymeric thickener selected from associative polymers, polysaccharides, non-associative polycarboxylic polymers, and mixtures thereof, and 
 c) at least about 10% by weight of a solvent, water, 
   ii) an individually packaged second component comprising a source of carbonate ions, carbamate ions or hydrogencarbonate ions and mixtures thereof, wherein said kit is free of a source of radical scavengers and upon mixing said components comprises at least about 0.2 mol/l of a source of carbonate ions, carbamate ions, hydrogencarbonate ions or peroxymonocarbonate ions and mixtures thereof, except when said polymeric thickener is an associative polymer when said composition comprises at least about 0.4 mol/l of said source.   
     
     
         12 . A hair colouring or bleaching composition according to  claim 10 , wherein said polysaccharide is a bio-polysaccharide. 
     
     
         13 . A hair colouring or bleaching composition according to  claim 10 , wherein said polysaccharide is a bio-polysaccharide selected from xanthan gum, gellan gum, welan gum, scleroglucan, succinoglycan, or mixtures thereof. 
     
     
         14 . A hair colouring or bleaching composition according to  claim 10 , wherein said polysaccharide is selected from guar gum, locust bean gum or mixtures thereof. 
     
     
         15 . A hair colouring or bleaching composition according to  claim 10 , wherein said polysaccharide is a hydroxypropyl starch phosphate. 
     
     
         16 . A hair colouring composition according to  claim 1 , wherein said composition further comprises at least one surfactant selected from anionic, nonionic, cationic or amphoteric surfactants. 
     
     
         17 . A hair colouring composition according to  claim 1 , wherein said composition further comprises at least one opacifier selected from fatty alcohols, fatty acids, fatty amide derivatives, fatty esters of ethylene glycol, fatty acids of glycerol and mixtures thereof. 
     
     
         18 . A hair colouring or bleaching composition according to  claim 1 , wherein said composition has a viscosity of from about 1000 to about 60000 cPs, from about 2000 to about 30000 cPs and most preferably from about 3000 to about 25000 cPs. 
     
     
         19 . A hair colouring or bleaching composition according to  claim 1 , wherein said composition further comprises a conditioning active. 
     
     
         20 . A hair colouring or bleaching composition according to  claim 1 , wherein said composition further comprises at least one oxidative dye precursor and or at least one pre-formed dye. 
     
     
         21 . A method of colouring and or bleaching hair comprising the steps of applying a composition according to  claim 1  on the hair, leaving said composition on the hair for up to about 60 minutes and subsequently rinsing said composition from the hair. 
     
     
         22 . A method according to  claim 21 , wherein said composition is retained on the hair for a time period of less than about 20 minutes. 
     
     
         23 . A method of sequential oxidative hair colouring or hair bleaching comprising the steps of at least two sequential oxidative hair colour or hair bleaching treatments wherein the time period between each treatment is from about 1 day to about 60 days, and wherein each treatment comprises the steps of providing a composition according to  claim 1 , applying said composition to the hair and retaining said composition on the hair for a time period of less than about 20 minutes and subsequently rinsing said composition from the hair.