Oxidizing composition and uses for dyeing, for permanently reshaping or for bleaching keratin fibres

Abstract

The present application relates to a cosmetic composition intended for treating keratin fibers, comprising, in a support which is suitable for keratin fibers: (a) at least one enzyme of 2-electron oxidoreductase type in the presence of at least one donor for the said enzyme; (b) at least one nonionic guar gum; as well as to processes for treating keratin fibers, in particular processes for dyeing, permanently reshaping or bleaching the hair, using this composition.

1 . Cosmetic and/or dermatological composition intended for treating keratin fibres, in particular human keratin fibres and more particularly human hair, comprising, in a support which is suitable for keratin fibres: 
 (a) at least one enzyme of 2-electron oxidoreductase type in the presence of at least one donor for the said enzyme,    (b) at least one nonionic guar gum.    
     
     
         2 . Composition according to  claim 1 , characterized in that the 2-electron oxidoreductase is chosen from uricases of animal, microbiological or biotechnological origin.  
     
     
         3 . Composition according to  claim 1  or  2 , characterized in that the 2-electron oxidoreductase(s) represent(s) from 0.01 to 20% by weight relative to the total weight of the composition.  
     
     
         4 . Composition according to  claim 3 , characterized in that the 2-electron oxidoreductase(s) represent(s) from 0.1 to 5% by weight relative to the total weight of the composition.  
     
     
         5 . Composition according to  claim 2 , characterized in that the donor (or substrate) for the said 2-electron oxidoreductase is chosen from uric acid and its salts.  
     
     
         6 . Composition according to any one of the preceding claims, characterized in that the donor(s) represent(s) from 0.01 to 20% by weight relative to the total weight of the composition.  
     
     
         7 . Composition according to  claim 6 , characterized in that the donor(s) represent(s) from 0.1 to 5% by weight relative to the total weight of the composition.  
     
     
         8 . Composition according to any one of  claims 1  to  7 , characterized in that the nonionic guar gum is modified with C 1 -C 6  hydroxyalkyl groups.  
     
     
         9 . Composition according to  claim 8 , characterized in that the hydroxyalkyl groups are chosen from hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.  
     
     
         10 . Composition according to either of claims  8  and  9 , characterized in that the nonionic guar gum has a degree of hydroxyalkylation ranging between 0.4 and 1.2.  
     
     
         11 . Composition according to either of claims  8  and  9 , characterized in that the concentration of nonionic guar gum ranges from 0.01% to 10% by weight relative to the total weight of the composition, and preferably from 0.1 to 5%.  
     
     
         12 . Ready-to-use composition according to any one of  claims 1  to  11 , for the oxidation dyeing of keratin fibres, and in particular human keratin fibres such as the hair, of the type also comprising, in a medium which is suitable for keratin fibres, at least one oxidation base and, optionally, one or more couplers.  
     
     
         13 . Composition according to  claim 12 , characterized in that the oxidation bases are chosen from para-phenylenediamines, double bases, ortho- or para-aminophenols and heterocyclic bases, as well as the addition salts of these compounds with an acid.  
     
     
         14 . Composition according to  claim 12  or  13 , characterized in that the oxidation bases are present in concentrations ranging from 0.0005 to 12% by weight relative to the total weight of the composition.  
     
     
         15 . Composition according to any one of  claims 12  to  14 , characterized in that the couplers are chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols and heterocyclic couplers, and the addition salts of these compounds with an acid.  
     
     
         16 . Composition according to any one of  claims 12  to  15 , characterized in that the couplers are present in concentrations ranging from 0.0001 to 10% by weight relative to the total weight of the composition.  
     
     
         17 . Composition according to any one of  claims 13  to  16 , characterized in that the addition salts with an acid for the oxidation bases and the couplers are chosen from the hydrochlorides, hydrobromides, sulphates, tartrates, lactates and acetates.  
     
     
         18 . Composition according to any one of  claims 12  to  17 , characterized in that it also contains direct dyes.  
     
     
         19 . Composition according to any one of  claims 1  to  18 , characterized in that the medium which is suitable for the keratin fibres (or support) consists of water or of a mixture of water and at least one organic solvent.  
     
     
         20 . Composition according to  claim 19 , characterized in that the organic solvents can be present in proportions preferably ranging from 1 to 40% by weight relative to the total weight of the composition, and even more preferably ranging from 5 to 30% by weight.  
     
     
         21 . Composition according to any one of  claims 1  to  20 , characterized in that the pH ranges from 5 to 11 and preferably from 6.5 to 10.  
     
     
         22 . Composition according to any one of  claims 1  to  21 , characterized in that it also contains at least one cosmetic adjuvant used conventionally in compositions for dyeing, permanently reshaping or bleaching the hair, chosen from the group consisting of anionic, cationic, nonionic, amphoteric or zwitterionic surfactants or mixtures thereof, anionic, cationic, nonionic, amphoteric or zwitterionic polymers or mixtures thereof, inorganic or organic thickeners, antioxidants, enzymes other than the 2-electron oxidoreductases, penetration agents, sequestering agents, fragrances, buffers, dispersing agents, conditioners, film-forming agents, preserving agents and opacifiers.  
     
     
         23 . Process for dyeing keratin fibres, and in particular human keratin fibres such as the hair, characterized in that at least one ready-to-use dye composition as defined in any one of  claims 12  to  22  is placed on the said fibres for a period which is sufficient to develop the desired coloration.  
     
     
         24 . Process according to  claim 23 , characterized in that it includes a first step which consists in separately storing, on the one hand, a composition (A) comprising, in a medium which is suitable for dyeing,. at least one oxidation base and optionally at least one coupler as defined in any one of  claims 12  to  18 , and, on the other hand, a composition (B) containing, in a medium which is suitable for keratin fibres, at least one enzyme of 2-electron oxidoreductase type in the presence of at least one donor for the said enzyme as defined in any one of the preceding claims, and then in mixing them together at the time of use, before applying this mixture to the keratin fibres; composition (A) or composition (B) containing the nonionic guar gum as defined in the preceding claims.  
     
     
         25 . Multi-compartment dyeing device or “kit”, characterized in that it contains a first compartment containing composition (A) as defined in  claim 24  and a second compartment containing composition (B) as defined in  claim 24 .  
     
     
         26 . Process for treating keratin fibres, in particular the hair, in order to obtain a permanent reshaping of this hair, in particular in the form of permanent-waved hair, this process comprising the following steps: (i) a reducing composition is applied to the keratin fibres to be treated, the keratin substance being placed under mechanical tension before, during or after the said application, (ii) the keratin substance is optionally rinsed, (iii) an oxidizing composition as defined in any one of  claims 1  to  11  and  19  to  22  is applied to the optionally rinsed keratin substance, (iv) the keratin substance is optionally rinsed again.  
     
     
         27 . Process for treating keratin fibres, in particular the hair, in order to bleach them, this process comprising the application of an oxidizing composition as defined in any one of  claims 1  to  11  and  19  to  22  optionally containing an auxiliary oxidizing agent and a second step of rinsing the keratin fibres.