Gel having improved usage properties, for oxidatively changing the color of keratin fibers

Abstract

The present invention relates to a gel having improved usage properties, for oxidatively changing the color of keratin fibers, which is based on a selected natural polysaccharide.

Description

[0001]February 13, 2024 Patent application 2023P00015WO "Gel for oxidative color change of keratin fibers with improved application properties." The present invention relates to an agent for oxidative color change for keratin fibers, which has optimized application properties and / or improved coloring performance, as well as a method for oxidative color change using an oxidative color change agent with optimized application properties and / or optimized coloring performance. So-called oxidation colorants are used for permanent, intensive colorations with corresponding fastness properties. Oxidative colorants usually consist of two components: one component usually contains oxidation dye precursors, so-called developer components, and coupler components.The developer components form the actual dyes under the influence of oxidizing agents, particularly hydrogen peroxide, which are added to the first component shortly before application to the hair, or of atmospheric oxygen, either with each other or by coupling with one or more coupler components. Developer components typically used are primary aromatic amines with an additional free or substituted hydroxy or amino group in the para or ortho position, diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazolone derivatives, and 2,4,5,6-tetraaminopyrimidine and its derivatives. Coupler components typically include m-phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones, m-aminophenols, and substituted pyridine derivatives. Oxidation dyes are characterized by excellent, long-lasting color results.Conventional oxidative colorants have a more alkaline pH value, significantly above 9.0, to stabilize the dye precursors during storage and to accelerate the reaction during oxidative application. Ammonia, in particular, enables good color results, but also presents disadvantages for the user due to its odor and potential irritation to skin and mucous membranes. The alkalizing agent causes the keratin fibers to swell, allowing the dye precursors to penetrate the hair easily. However, the alkaline pH also intensifies the damaging effect of the oxidizing agent on the hair structure. The damage to the hair structure, which is particularly noticeable, affects the flaking of the cuticle, the outer layer of the keratin fiber.This is noticeable in increased roughness, poorer feel, reduced shine, and poorer fiber stability. The roughened cuticle structure allows small molecules, such as water, to escape more quickly. As a result, damaged hair further loses its suppleness and elasticity. However, the colorfastness properties are also impaired by the roughened fiber surface. Therefore, special efforts are being made to develop effective oxidative color-changing agents, especially agents for lightening and / or coloring keratin fibers that achieve good coloring and lightening results despite a moderately alkaline pH.Furthermore, special efforts are being made to develop high-performance oxidative color-changing agents, particularly agents for lightening and / or coloring keratin fibers, which exhibit improved application properties, particularly with regard to application behavior and viscosity during the exposure time on the keratin fibers. During oxidative coloring, the oxidizing agent destroys the fiber's own pigment, melanin. This lightens or bleaches the keratin fibers. By adding oxidative dye precursors and / or direct dyes to the oxidative color-changing agent, even darker hair can be colored in many fashionable shades, which are often lighter than the original color of the fiber.Oxidative color-changing agents that are adjusted to a slightly alkaline or even slightly acidic pH value are not preferred by consumers due to the often less satisfactory color results. Fats or silicones are often added to these agents to reduce hair damage caused by an alkaline oxidative color-changing agent. Formulating such color-changing agents presents numerous problems, because the fat-containing alkalizing cream must be able to mix easily with the high-water content hydrogen peroxide developer and be applied to the hair, especially during the preparation of the application mixture. This usually requires the use of large amounts of surfactants or emulsifiers, which can also contribute to hair damage.The water-insoluble fats, oils, waxes, or silicones can hinder the explicitly desired swelling of the hair during the color-changing agent's exposure time, and thus the penetration of the oxidizing agent and the dye precursors into the keratin fibers. Furthermore, the more water-insoluble components, such as fats and oils, the more difficult it is to wash out the color-changing agents after the exposure time. Furthermore, low-fat and fat-free oxidative color-changing agents can be easily formulated transparently, a dosage form currently preferred by a large group of consumers. The present application was therefore based on the object of providing an agent for the oxidative color change of keratin fibers with improved application properties, in particular with improved rheological application properties.The present application was further based on the object of providing an agent for the oxidative color change of keratin fibers with improved storage stability and / or improved application properties, in particular with improved rheological application properties, which does not contain petrochemically based thickeners. The present application was further based on the object of providing an agent for the oxidative color change of keratin fibers with improved coloring properties, in particular with regard to color intensity and balancing power. It has now been found that an oxidative color change agent containing an iota-carrageenan-based gel in combination with an alkyl mono- and oligoglycoside has excellent application properties, so that the use of petrochemically based thickeners can be dispensed with.State of the art: DE102017223233A1 discloses gel-like color-changing agents for keratin fibers thickened with a mixture of carbomer and xanthan. FR2977157B1 discloses gel-like skin treatment agents containing at least 70% by weight of water, carrageenan, hyaluronic acid, and a diol with 2 to 10 carbon atoms. WO2021026572A1 discloses foaming cleansers for the body and hands containing at least 70% by weight of water, 6-11% by weight of C8-C10 alkylglucoside surfactants, carrageenan, and xanthan, and having an acidic pH of approximately pH 4. The present invention relates, in a first embodiment, to an agent for the oxidative color change of keratin fibers, in particular human hair, containing, in each case based on its weight, − more than 80% by weight to 99% by weight of water, − 0.1 to 1.5% by weight of iota-carrageenan, − 0.05 to 0.5% by weight.-% potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − at least one non-ionic surfactant selected from alkyl mono- and oligoglycosides of the formula R. 4 O-[G]p, in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3% by weight, − zero to less than 0.1% by weight of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, the agent having a pH in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extraordinarily preferably 8.5 to 9.5, in each case measured at a temperature of 22 °C. The agent according to the invention contains, in each case based on its weight, more than 80 wt.% to 99 wt.%, preferably 82-95 wt.%, particularly preferably 85-90 wt.%, extraordinarily preferably 86-88 wt.% water.The agent according to the invention is a water-based gel with iota-carrageenan as a thickener. The agent according to the invention also represents the alkalizing component of a two-part oxidative coloring or lightening agent, which is mixed with an aqueous hydrogen peroxide solution shortly before use and then applied to the hair. Surprisingly, it was found that a gel based on iota-carrageenan in the presence of potassium ions is excellently suited to tolerating the salt load associated with the addition of oxidation dye precursors without compromising viscosity stability. Therefore, the agent according to the invention contains, as further mandatory ingredients, 0.1 to 1.5 wt.% iota-carrageenan and – for its gelling – 0.05 to 0.5 wt.% potassium ions in the form of at least one potassium salt, based in each case on its weight. Agents preferred according to the invention contain, based on their weight, 0.2 to 1.0 wt.-%, preferably 0.3 to 0.8 wt.%, particularly preferably 0.4 to 0.7 wt.%, extraordinarily preferably 0.5 to 0.6 wt.% iota-carrageenan. Further agents preferred according to the invention contain, in each case based on their weight, 0.1 to 0.4 wt.%, preferably 0.15 to 0.35 wt.%, particularly preferably 0.2 to 0.3 wt.%, extraordinarily preferably 0.21 to 0.25 wt.% potassium ions in the form of at least one potassium salt. Suitable potassium salts are selected from potassium chloride, potassium hydrogen sulfate, dipotassium sulfate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, tripotassium phosphate, potassium hydroxide, potassium tartrate, potassium lactate, potassium succinate and mixtures of these salts. Preferred potassium salts are selected from the inorganic salts potassium chloride, potassium hydrogen sulfate, dipotassium sulfate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, tripotassium phosphate and potassium hydroxide as well as mixtures of these salts.Color-changing agents preferred according to the invention have a viscosity in the range of 6000–15000 mPas, preferably 6500–14000 mPas, particularly preferably 7000–13000 mPas, and extraordinarily preferably 8000–12000 mPas, each measured at 20°C using a Haake Model MVII rheometer at a shear rate of 7.2 revolutions per second. Compared to the gel-like color-changing agents for keratin fibers known from DE102017223233A1, which are thickened with a mixture of carbomer and xanthan, the gel-like color-changing agent according to the invention has a firmer structure with thixotropic behavior. The agents according to the invention thus adhere better to the keratin fibers during the contact time than the known agents. Oxidative color change processes on keratin fibers usually occur in a neutral to alkaline environment.Therefore, the pH of the agent according to the invention is in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, and extremely preferably 8.5 to 9.5, each measured at a temperature of 22°C. As a further obligatory ingredient, the agent according to the invention therefore contains at least one alkalizing agent. The alkalizing agents preferably suitable for adjusting the pH of the agents according to the invention are selected from ammonia, alkanolamines, alkali hydroxides, basic amino acids, alkali metal metasilicates, alkali metal disilicates, alkali phosphates, and dialkali monohydrogen phosphates, as well as mixtures of these substances. Color-changing agents preferred according to the invention are characterized in that they contain no ammonia or ammonium hydroxide.Particularly preferred alkalizing agents are selected from alkanolamines, alkali hydroxides, basic amino acids, alkali metal metasilicates, alkali metal disilicates, alkali phosphates, and dialkali monohydrogen phosphates, as well as mixtures of these substances. The alkali metal ions in the aforementioned alkalizing salts are preferably lithium, sodium, or potassium, especially sodium or potassium. The basic amino acids that can be used as alkalizing agents are preferably selected from the group consisting of L-arginine, D-arginine, D,L-arginine, L-lysine, D-lysine, D,L-lysine, and mixtures thereof. Particularly preferred basic amino acids are L-arginine, L-lysine, and mixtures thereof. The alkali hydroxides that can be used as alkalizing agents are preferably selected from sodium hydroxide and potassium hydroxide, as well as mixtures thereof. Potassium hydroxide is extremely preferred according to the invention.The alkanolamines which can be used as alkalizing agents preferably have 2 to 9 carbon atoms in the molecule and are particularly preferably selected from primary amines having a C2-C6 alkyl parent structure which carries at least one hydroxyl group. Particularly preferred alkanolamines are selected from the group consisting of 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol, and 2-amino-2-methylpropan-1,3-diol, and mixtures thereof. Alkanolamines which are particularly preferred according to the invention are selected from the group consisting of 2-aminoethan-1-ol, 2-amino-2-methylpropan-1-ol and 2-amino-2-methylpropan-1,3-diol; 2-aminoethan-1-ol is extremely preferred.However, secondary amines such as diisopropanolamine (1,1'-iminodipropan-2-ol) are also suitable alkalizing agents according to the invention. Particularly preferred agents according to the invention contain 2-aminoethane-1-ol, potassium hydroxide, L-arginine, L-lysine, and mixtures thereof as alkalizing agents. Extremely preferred color-changing agents according to the invention contain a mixture of 2-aminoethane-1-ol, potassium hydroxide, L-arginine, and L-lysine. Preferred color-changing agents according to the invention are characterized in that at least one alkalizing agent is present in a total amount of 0.5-10 wt.%, preferably 0.7-7 wt.%, particularly preferably 1.0-5 wt.%, extraordinarily preferably 1.2-3 wt.%, in each case based on the weight of the color-changing agent. The agents according to the invention are intended for use in the context of an oxidative color change of keratin fibers, in particular human hair.In oxidative color-changing processes, the agent according to the invention (M1), which is neutral or alkaline and preferably contains one or more oxidation dye precursors and optionally one or more direct dyes, is usually mixed with an aqueous hydrogen peroxide-containing composition (M2) having an acidic pH immediately before application to the keratin fibers to form a ready-to-use colorant. The neutral to alkaline medium of the application mixture leads to the activation of the hydrogen peroxide, which degrades the melanin in the keratin fibers. If the agent according to the invention (M1) contains oxidation dye precursors, the hydrogen peroxide causes them to react with each other and form permanent dyes.To prevent this color formation from occurring during storage, the agents according to the invention contain zero to less than 0.1% by weight of peroxide compounds. As a further mandatory component, the agents according to the invention contain at least one nonionic surfactant selected from alkyl mono- and oligoglycosides of the formula R for color change. 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms, and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3 wt.%. Surfactants and emulsifiers within the meaning of the present application are amphiphilic (bifunctional) compounds consisting of at least one hydrophobic and at least one hydrophilic molecular moiety. The hydrophobic radical is preferably a hydrocarbon group having 8-28 carbon atoms, which can be saturated or unsaturated, linear or branched. This C8-C28 alkyl group is particularly preferably linear. Basic properties of surfactants and emulsifiers are oriented absorption at interfaces, aggregation to form micelles, and the formation of lyotropic phases.When selecting surfactants suitable for the invention, it may be preferable to use a mixture of surfactants in order to optimally adjust the stability and / or application properties of the agents according to the invention. Preferred sugars from which the sugar residue G of the nonionic surfactant of the formula R is derived are: 4 O-[G]p is selected are erythrose, threose, erythrulose, ribose, deoxyribose, arabinose, glucose, fructose, galactose, arabinose, ribose, xylose, lyxose, allose, altrose, mannose, gulose, idose, talose, fucose and rhamnose, particularly preferably glucose, galactose, fructose, fucose and rhamnose, extraordinarily preferably glucose. The alkyl mono- and oligoglycosides of the formula R 4 O-[G] p , in the R 4stands for an alkyl or alkenyl radical with 4 to 22 carbon atoms, G stands for a sugar radical with 5 or 6 carbon atoms and p stands for positive rational numbers from 1 to 6, contain with G a sugar radical with 5 or 6 carbon atoms, which is derived from aldoses or ketoses with 5 or 6 carbon atoms, preferably from glucose. The preferred alkyl mono- and oligoglycosides are therefore alkyl mono- and oligoglucosides. The index number p in the general formula indicates the degree of oligomerization (DP), i.e. the distribution of mono- and oligoglycosides, and stands for a positive rational number from 1 to 6. While p in the individual molecule must always be an integer and can take on the values ​​p = 1 to 6 here, the value p for an industrially produced alkyl oligoglycoside is an analytically determined calculated value, which is usually a fractional number.Preference is given to using alkyl mono- and oligoglycosides with an average degree of oligomerization p of 1.1 to 3.0, preferably 1.5 to 2.0. From an application perspective, alkyl mono- and oligoglycosides with a degree of oligomerization of less than 1.7 and, in particular, in the range of 1.2 to 1.6 are preferred. The alkyl radical R. 4is derived from primary alcohols having 4 to 22, preferably 8 to 18, particularly preferably 8 to 12 carbon atoms. Typical examples are butanol, caproic alcohol, caprylic alcohol, capric alcohol and undecyl alcohol as well as technical mixtures thereof, as obtained, for example, in the hydrogenation of technical fatty acid methyl esters or in the course of the hydrogenation of aldehydes from Roelen's oxosynthesis. Preference is given to alkyl oligoglucosides with a chain length of C8-C10 (DP = 1 to 3), which are obtained as first runnings in the distillative separation of technical C8-C18 coconut fatty alcohol and contain less than 6 wt.% C 12 -alcohol and alkyl oligoglucosides based on technical C 9 / 11 -Oxo- alcohols (DP = 1 to 3). These are commercially available under the INCI name Caprylyl / Capryl Glucoside. Also preferred is an alkyl oligoglucoside commercial product whose alkyl radical R 4derived from technical C8-C18 coconut fatty alcohol and available under the INCI name Coco-Glucoside. The alkyl radical R 4 can also be derived from primary alcohols having 12 to 22, preferably 12 to 14 carbon atoms. Typical examples are lauryl alcohol, myristyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol and technical mixtures thereof, which can be obtained as described above. Alkyl oligoglucosides based on lauryl alcohol with a DP of 1 to 3 are preferred. Preferred agents according to the invention are characterized in that at least one nonionic surfactant selected from alkyl mono- and oligoglycosides of the formula R 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms, and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.3 to 2.5 wt.%, preferably 0.5 to 2.0 wt.%, particularly preferably 0.8 to 1.5 wt.%, extraordinarily preferably 1.0 to 1.2 wt.%, in each case based on the weight of the agent. Further agents preferred according to the invention are characterized in that at least one alkyl oligoglycoside of the formula R 4 O-[G]p, in the R 4 represents an alkyl radical having 8 to 18, preferably 8 to 12 carbon atoms, G represents a glucose radical, and p represents positive rational numbers from 1.1 to 2, in a total amount of 0.1 to less than 3% by weight, based on the weight of the agent. Further agents preferred according to the invention are characterized in that at least one alkyl oligoglycoside of the formula R 4 O-[G]p, in the R4represents an alkyl radical having 8 to 18, preferably 8 to 12 carbon atoms, G represents a glucose radical, and p represents positive rational numbers from 1.1 to 2, in a total amount of 0.3 to 2.5 wt.%, preferably 0.5 to 2.0 wt.%, particularly preferably 0.8 to 1.5 wt.%, extraordinarily preferably 1.0 to 1.2 wt.%, in each case based on the weight of the agent. In a preferred embodiment, the agent according to the invention for color-changing keratin fibers contains at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type. Based on their reactivity, oxidation dye precursors can be divided into two categories: developer components and coupler components. Coupler components alone do not produce significant coloration in the context of oxidative coloring.They always require the presence of developer components. Developer components can form the actual dye on their own. The developer and coupler components are usually used in free form. However, for substances containing amino groups, it may be preferable to use them in salt form, particularly in the form of hydrochlorides, hydrobromides, or sulfates. Particularly preferred developer components are selected from at least one compound from the group formed by p-phenylenediamine, p-toluenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, 2-(1,2-dihydroxyethyl)-p-phenylenediamine, N,N-bis-(2-hydroxyethyl)-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, N-(4-amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl)propyl]amine, N,N'-bis-(2-hydroxyethyl)-N,N'-bis-(4-aminophenyl)-1,3-diamino-propan-2-ol, bis-(2-hydroxy-5-aminophenyl)methane, 1,3-bis-(2,5-diaminophenoxy)propan-2-ol, N,N'-Bis-(4-aminophenyl)-1,4-diazacycloheptane, 1,10-bis-(2,5-diaminophenyl)-1,4,7,10-tetraoxadecane, p-aminophenol, 4-amino-3-methylphenol, 4-amino-2-amino-methylphenol, 4-amino-2-(1,2-dihydroxyethyl)phenol and 4-amino-2-(diethylaminomethyl)phenol, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, the physiologically acceptable salts of these compounds as well as mixtures of these developer components and developer component salts. Very particularly preferred developer components are selected from 4,5-diamino-1-(2-hydroxyethyl)pyrazole, p-tolylenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, N-(4-amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl)propyl]amine and mixtures of these compounds as well as their physiologically acceptable salts. Exceptionally preferred are 4,5-diamino-1-(2-hydroxyethyl)pyrazole, p-tolylenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine,2-Methoxymethyl-p-phenylenediamine and mixtures of these compounds as well as their physiologically acceptable salts. Surprisingly, it was found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with 2-methoxymethyl-p-phenylenediamine as the developer component. Furthermore, it was found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with 2-(2-hydroxyethyl)-p-phenylenediamine as the developer component. Furthermore, it was found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with 4,5-diamino-1-(2-hydroxyethyl)pyrazole as the developer component. Furthermore, it was found that the gel base of the compositions according to the invention is particularly well suitedto achieve intensive and low-selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine and 4,5-diamino-1-(2-hydroxyethyl)pyrazole as developer components. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly suitable for achieving intensive and low-selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine and 4,5-diamino-1-(2-hydroxyethyl)pyrazole as developer components. Preferably, at least one developer component is present in a total amount of 0.01 to 5 wt.%, preferably 0.1 to 4 wt.%, particularly preferably 0.2 to 2.5 wt.%, in each case based on the weight of the oxidation colorant (M1) according to the invention. Preferably, at least one coupler component is present in a total amount of 0.001 to 4% by weight, preferably 0.01 to 2% by weight, particularly preferably 0.05 to 1% by weight, extraordinarily preferably 0.1 to 0.5% by weight,each based on the weight of the oxidation dye (M1) according to the invention. Coupler components within the meaning of the invention allow at least one substitution of a chemical residue of the coupler by the oxidized form of the developer component. This forms a covalent bond between the coupler and developer components. Couplers are preferably cyclic compounds that carry at least two groups on the cycle, selected from (i) optionally substituted amino groups and / or (ii) hydroxyl groups. If the cyclic compound is a six-membered ring (preferably aromatic), the said groups are preferably in the ortho or meta position to one another. Preferred agents according to the invention are characterized in that the at least one oxidation dye precursor of the coupler type is selected from one of the following classes: - 3-aminophenol (m-aminophenol) and / or its derivatives,- 3-aminoaniline (m-diaminobenzene) and / or its derivatives, - 2-aminoaniline (1,2-diaminobenzene; o-diaminobenzene) and / or its derivatives, - 2-aminophenol (o-aminophenol) and / or its derivatives, - naphthalene derivatives with at least one hydroxy group, - di- or trihydroxybenzene and / or their derivatives, - pyridine derivatives, - pyrimidine derivatives, - monohydroxyindole derivatives and / or monoaminoindole derivatives, - monohydroxyindoline derivatives and / or monoaminoindoline derivatives, - pyrazolone derivatives, such as 1-phenyl-3-methylpyrazol-5-one, - morpholine derivatives, such as 6-hydroxybenzomorpholine or 6-aminobenzomorpholine, - quinoxaline derivatives, such as 6-methyl-1,2,3,4-tetrahydroquinoxaline, mixtures of two or more compounds from one or more of these classes are also preferred according to the invention in this embodiment. Particularly preferred additional coupler components according to the invention are selected from 3-aminophenol,5-Amino-2-methylphenol, 3-Amino-2-chlor-6-methylphenol, 2-Hydroxy-4-aminophenoxyethanol, 5-Amino-4-chlor-2-methylphenol, 5-(2-Hydroxyethyl)amino-2-methylphenol, 1-beta-Hydroxyethyl-3,4- methylendioxyanilin, 2,4-Dichlor-3-aminophenol, 2-Aminophenol, 3-Phenylendiamin, 2-(2,4-Diaminophen- oxy)ethanol, 1,3-Bis(2,4-diaminophenoxy)propan, 1-Methoxy-2-amino-4-(2’-hydroxyethylamino)benzol (= 2-Amino-4-Hydroxyethylaminoanisol), 1,3-Bis (2,4-diaminophenyl)propan, 2,6-Bis(2'-hydroxyethylamino)- 1-methylbenzol, 2-({3-[(2-Hydroxyethyl)amino]-4-methoxy-5-methylphenyl}amino)ethanol, 2-({3-[(2- Hydroxyethyl)amino]-2-methoxy-5-methylphenyl}amino)ethanol, 2-({3-[(2-Hydroxyethyl)amino]-4,5- dimethylphenyl}amino)ethanol, 2-[3-Morpholin-4-ylphenyl)amino]ethanol, 3-Amino-4-(2-methoxyethoxy)- 5-methylphenylamin, 1-Amino-3-bis-(2-hydroxyethyl)aminobenzol, Resorcin, 2-Methylresorcin, 4-Chlor- resorcin, 1,2,4-Trihydroxybenzol, 2-Amino-3-hydroxypyridin, 3-Amino-2-methylamino-6-methoxypyridin, 2,6-Dihydroxy-3,4-dimethylpyridine, 3,5-diamino-2,6-dimethoxypyridine, 1-phenyl-3-methylpyrazol-5-one, 1-naphthol, 1,5-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 1,8-dihydroxynaphthalene, 4-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 4-hydroxyindoline, 6-hydroxyindoline, 7-hydroxyindoline or mixtures of these compounds or the physiologically acceptable salts of the aforementioned compounds. Particularly preferred are 3-aminophenol, resorcinol, 2-methylresorcinol, 5-amino-2-methylphenol, 2-(2,4-diaminophenoxy)ethanol, 1,3-bis(2,4-diaminophenoxy)propane, 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene, 2-amino-3-hydroxypyridine, 1-naphthol and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, as well as their physiologically acceptable salts and mixtures of the components mentioned. The coupler component 6-hydroxybenzomorpholine is also preferred. It may be particularly preferred according to the inventionthat the agents according to the invention do not contain resorcinol or any resorcinol derivative, in particular no 4-chlororesorcinol and no 2-methylresorcinol. Surprisingly, it was found that the gel base of the agents according to the invention is particularly well suited for achieving intensive and low-selective colorations with 1-beta-hydroxyethyl-3,4-methylenedioxyaniline as a coupler component. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited for achieving intensive and low-selective colorations with 2-(2,4-diaminophenoxy)ethanol as a coupler component. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited for achieving intensive and low-selective colorations with 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene as a coupler component. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suitedto achieve intensive and less selective colorations with 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieve intensive and less selective colorations with 6-hydroxybenzomorpholine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieve intensive and less selective colorations with mixtures of 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine as coupler components. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieve intensive and less selective colorations with mixtures of 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-(2,4-diaminophenoxy)ethanol as coupler components. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suitedto achieve intensive and less selective colorations with mixtures of 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine as coupler components. Furthermore, it was surprisingly found that the gel base of the inventive agents is particularly well suited to achieve intensive and less selective colorations with mixtures of 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene as coupler components. Furthermore, it was surprisingly found that the gel base of the inventive agents is particularly well suited to achieve intensive and less selective colorations with mixtures of 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 6-hydroxybenzomorpholine as coupler components. Surprisingly, it was found that the gel base of the inventive agents is particularly well suitedto achieve intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 4,5-diamino-1-(2-hydroxyethyl)pyrazole and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly suitable for producing intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline. Surprisingly, it was found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine and 6-hydroxybenzomorpholine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine and 6-hydroxybenzomorpholine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suitedto achieve intensive and less selective colorations with mixtures of 4,5-diamino-1-(2-hydroxyethyl)pyrazole and 6-hydroxybenzomorpholine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, and 6-hydroxybenzomorpholine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly well suited to achieving intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, and 6-hydroxybenzomorpholine. Surprisingly, it was found that the gel base of the compositions according to the invention is particularly suitable for producing intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the compositions according to the invention is particularly well suited to achieving intensive and low-selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the compositions according to the invention is particularly well suited to achieving intensive and low-selective colorations with mixtures of 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly suitable for producing intensive and less selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, and 2-amino-3-hydroxypyridine. It was surprisingly found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 6-hydroxybenzomorpholine, and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly suitable for producing intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine,6-hydroxybenzomorpholine and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with mixtures of 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 6-hydroxybenzomorpholine, and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the compositions according to the invention is particularly well suited for achieving intensive and low-selective colorations with mixtures of 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 6-hydroxybenzomorpholine, and 2-amino-3-hydroxypyridine. Furthermore, it was surprisingly found that the gel base of the agents according to the invention is particularly suitable for producing intensive and less selective colorations with mixtures of 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole,6-hydroxybenzomorpholine and 2-amino-3-hydroxypyridine. Particularly preferred agents according to the invention are characterized in that they contain one of the following oxidation dye precursor mixtures: 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-(2,4-diaminophenoxy)ethanol, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 6-hydroxybenzomorpholine, 2-methoxymethyl-p-phenylenediamine and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, 2-(2-Hydroxyethyl)-p-phenylenediamine and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, 4,5-diamino-1-(2-hydroxyethyl)pyrazole and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline, 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole and 1-beta-hydroxyethyl-3,4-methylenedioxyaniline,2-(2-Hydroxyethyl)-p-phenylendiamin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol und 1-beta-Hydroxyethyl- 3,4-methylendioxyanilin, 2-Methoxymethyl-p-phenylendiamin und 6-Hydroxybenzomorpholin, 2-(2-Hydroxyethyl)-p-phenylendiamin und 6-Hydroxybenzomorpholin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol und 6-Hydroxybenzomorpholin, 2-Methoxymethyl-p-phenylendiamin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol und 6-Hydroxybenzomorpho- lin, 2-(2-Hydroxyethyl)-p-phenylendiamin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol und 6-Hydroxybenzomor- pholin, 2-Methoxymethyl-p-phenylendiamin, 1-beta-Hydroxyethyl-3,4-methylendioxyanilin und 2-Amino-3-hydro- xypyridin, 2-(2-Hydroxyethyl)-p-phenylendiamin, 1-beta-Hydroxyethyl-3,4-methylendioxyanilin und 2-Amino-3-hydro- xypyridin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol, 1-beta-Hydroxyethyl-3,4-methylendioxyanilin und 2-Amino-3- hydroxypyridin, 2-Methoxymethyl-p-phenylendiamin, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol, 1-beta-Hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine, 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 1-beta-hydroxyethyl-3,4-methylenedioxyaniline and 2-amino-3-hydroxypyridine, 2-Methoxymethyl-p-phenylenediamine, 6-hydroxybenzomorpholine and 2-amino-3-hydroxypyridine, 2-(2-hydroxyethyl)-p-phenylenediamine, 6-hydroxybenzomorpholine and 2-amino-3-hydroxypyridine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 6-Hydroxybenzomorpholine and 2-amino-3-hydroxypyridine, 2-methoxymethyl-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 6-Hydroxybenzomorpholine and 2-amino-3-hydroxypyridine, 2-(2-hydroxyethyl)-p-phenylenediamine, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 6-hydroxybenzomorpholine and 2-amino-3-hydroxypyridine. The at least one coupler component is preferably present in a total amount of 0.01-20 wt.%, particularly preferably 0.2-10 wt.%, and extraordinarily preferably 0.6-5 wt.%, in each case based on the weight of the oxidation colorant according to the invention.In order to achieve a balanced and subtle nuance formation or to mattify undesired residual color impressions caused by melanin degradation products, particularly in the reddish or bluish range, it is preferred according to the invention if further color-imparting components are contained in the oxidative color-changing agent according to the invention. In a further embodiment, the oxidative color-changing agents according to the invention can therefore additionally contain at least one direct dye. These are dyes that are absorbed directly onto the hair and do not require an oxidative process to develop the color. Direct dyes are usually nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, or indophenols. Direct dyes can be anionic, cationic, or non-ionic. The direct dyes are each preferably present in an amount of 0.001 to 2% by weight.based on the weight of the oxidative color-changing agent. Preferred anionic direct dyes are the compounds known by the international designations or trade names Acid Yellow 1, Yellow 10, Acid Yellow 23, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 52, Pigment Red 57:1, Acid Blue 7, Acid Green 50, Acid Violet 43, Acid Black 1, Acid Black 52, Bromophenol Blue, and Tetrabromophenol Blue. Preferred cationic direct dyes are cationic triphenylmethane dyes, for example Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14, aromatic systems substituted with a quaternary nitrogen group, such as Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16 and Basic Brown 17, cationic anthraquinone dyes, such as HC Blue 16 (Bluequat B) and direct dyes containing a heterocycle having at least one quaternary nitrogen atom,in particular Basic Yellow 87, Basic Orange 31, and Basic Red 51. The cationic direct dyes marketed under the trademark Arianor are also preferred cationic direct dyes according to the invention. Nonionic direct dyes that are particularly suitable are nonionic nitro and quinone dyes and neutral azo dyes. Preferred non-ionic direct dyes are the compounds known under the international designations or trade names HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1, HC Red 3, HC Red 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, as well as 1,4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1,4-bis-(2-hydroxyethyl)-amino-2-nitrobenzene, 3-nitro-4-(2-hydroxyethyl)aminophenol, 2-(2-Hydroxyethyl)amino-4,6-dinitrophenol,4-[(2-hydroxyethyl)amino]-3-nitro-1-methylbenzene, 1-amino-4-(2-hydroxyethyl)amino-5-chloro-2-nitrobenzene, 4-amino-3-nitrophenol, 1-(2'-ureidoethyl)amino-4-nitrobenzene, 2-[(4-amino-2-nitrophenyl)amino]-benzoic acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-4-nitrophenol. According to the invention, very particular preference is given to containing at least one cationic direct dye selected from Basic Blue 7, Basic Blue 26, Basic Violet 2, Basic Violet 14, Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16, Basic Brown 17, HC Blue 16 (Bluequat B), Basic Yellow 87, Basic Orange 31 and Basic Red 51, as well as mixtures thereof. Particularly preferred oxidative color-changing agents according to the invention contain, in addition to the at least one alkyl mono- or oligoglycoside of the formula R, 4 O-[G]p, in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms, and p represents a positive rational number in the range from 1 to 6, at least one further nonionic surfactant. The additional nonionic surfactants are preferably present in a total amount of 0.1-5 wt.%, particularly preferably 0.2-4 wt.%, further particularly preferably 0.5-2 wt.%, in each case based on the weight of the color-changing agent according to the invention. Additional nonionic surfactants preferred according to the invention are selected from addition products of 6 to 12 ethylene oxide units and one to two propylene oxide units with divalent C10-16 alkane glycols, further selected from C8-C ethoxylated with 20-100 mol of ethylene oxide per mol of castor oil, 24-alkanols with 10 – 100 moles of ethylene oxide per mole, with 20 – 100 moles of ethylene oxide per mole ethoxylated sorbitan monoesters of linear saturated and unsaturated C 12 – C 30-Carboxylic acids, which may be hydroxylated, in particular those of myristic acid, palmitic acid, stearic acid, or mixtures of these fatty acids, as well as mixtures of the aforementioned substances. Particularly preferred additional nonionic surfactants are selected from addition products of 6 to 12 ethylene oxide units and one to two propylene oxide units to dihydric C10-16 alkane glycols, with preferred dihydric C10-16 alkane glycols being selected from 1,2-decanediol, 1,2-undecanediol, 1,2-dodecanediol (lauryl glycol), 1,2-tridecanediol, 1,2-tetradecanediol, 1,2-pentadecanediol, and 1,2-hexadecanediol, as well as mixtures thereof.Particularly preferred nonionic surfactants are selected from addition products of 6 to 12, preferably 8-9, ethylene oxide units and one to two propylene oxide units with 1,2-decanediol, 1,2-undecanediol, 1,2-dodecanediol (lauryl glycol), 1,2-tridecanediol, 1,2-tetradecanediol, 1,2-pentadecanediol, or 1,2-hexadecanediol, as well as mixtures thereof. A nonionic surfactant of this class that is particularly preferred according to the invention is PPG-1-PEG-9 Lauryl Glycol Ether, which is available, for example, under the trade name Eumulgin L from BASF. The ethoxylated C8-C24 alkanols preferably used according to the invention have the formula R. 1 O(CH2CH2O) n H, where R 1stands for a linear or branched alkyl and / or alkenyl radical having 8 - 24 carbon atoms and n, the average number of ethylene oxide units per molecule, for numbers from 10 - 100, preferably 10 - 30, particularly preferably 15 to 25 mol of ethylene oxide to 1 mol of caprylic alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidyl alcohol and technical mixtures thereof. Adducts of 10 - 100 moles of ethylene oxide with technical fatty alcohols with 12 - 18 carbon atoms, such as coconut, palm, palm kernel or tallow fatty alcohol, are also suitable.Particularly preferred are Laureth-10, Laureth-12, Laureth-15, Laureth-20, Laureth-30, Laureth-100, Myreth-10, Myreth-12, Myreth-15, Myreth-20, Myreth-30, Myreth-100, Ceteth-10, Ceteth-12, Ceteth-15, Ceteth-20, Ceteth-30, Ceteth-50, Ceteth-100, Steareth-10, Steareth-12 Steareth-15, Steareth-20, Steareth-30, Steareth-50, Steareth-100, Oleth-10, Oleth-12, Oleth-15, Oleth-20, Oleth-30, Oleth-50, Oleth-100,Ceteareth-10, Ceteareth-15, Ceteareth-12, Ceteareth-15, Ceteareth-20, Ceteareth-30, Ceteareth-50, Ceteareth-100 and Coceth-10, Coceth-12, Coceth-15, Coceth-20, Coceth-30, Coceth-50 and Coceth-100. A nonionic surfactant of this class which is particularly preferred according to the invention is Steareth-100, which is preferably present in an amount of 0.1-2% by weight, particularly preferably 0.2-1% by weight, further particularly preferably 0.3-0.5% by weight, in each case based on the weight of the color-changing agent according to the invention.Preferred color-changing agents according to the invention contain the additional nonionic surfactant PPG-1-PEG-9 Lauryl Glycol Ether, which is preferably present in an amount of 0.1-3 wt.%, particularly preferably 0.2-2 wt.%, further particularly preferably 0.5-1.0 wt.%, in each case based on the weight of the color-changing agent according to the invention. Further preferred color-changing agents according to the invention contain PPG-1-PEG-9 Lauryl Glycol Ether, Steareth-100, and at least one alkyl oligoglycoside of the formula R. 4 O-[G] p , in the R 4represents an alkyl radical having 8 to 18, preferably 8 to 12 carbon atoms, G represents a glucose radical, and p represents numbers from 1, 1 to 2. Further oxidative color-changing agents (M1) preferred according to the invention are characterized in that they contain only non-ionic surfactants. Further oxidative color-changing agents (M1) preferred according to the invention are characterized in that they contain no ionic surfactant. Further oxidative color-changing agents (M1) preferred according to the invention are characterized in that they contain no polymer or copolymer with acrylate-, methacrylate-, or vinyl-containing monomers, and no polyurethane, i.e., based on their weight, 0.0% by weight of the aforementioned (co)polymers are present in (M1). Further oxidative color-changing agents (M1) preferred according to the invention are characterized in that, in addition to iota-carrageenan, they contain at least one further polysaccharide as a thickening polymer.Additional polysaccharide thickening polymers preferred according to the invention are selected from xanthan, hyaluronic acid, salts of hyaluronic acid, in particular sodium hyaluronate, sodium carboxymethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, and mixtures thereof. Xanthan, hyaluronic acid, salts of hyaluronic acid and mixtures thereof are extremely preferred according to the invention. Surprisingly, it has been found that oxidative colorations with high fastness properties can be achieved with iota-carrageenan and xanthan. Synergistic effects on the application properties have also been observed, in particular with regard to applicability and gel stability during the exposure time on the keratin fibers. Particularly preferred oxidative color-changing agents according to the invention are therefore characterized in that they contain, in each case based on the weight of the color-changing agent according to the invention, 0.05 - 1.5 wt.%, preferably 0.1 - 1.2 wt.-%, particularly preferably 0.5 - 1 wt.%, extraordinarily preferably 0.6 - 0.9 wt.% xanthan. In order to further optimize the application and coloring properties of the color-changing agents according to the invention, it has surprisingly proven useful if, in addition to iota-carrageenan or in addition to iota-carrageenan and xanthan, they contain at least one further thickening polymer selected from hyaluronic acid, salts of hyaluronic acid, in particular sodium hyaluronate, sodium carboxymethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, and mixtures thereof. The thickening polymer selected from hyaluronic acid, salts of hyaluronic acid, in particular sodium hyaluronate, sodium carboxymethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, and mixtures thereof, is preferably present in a total amount of 0.005 - 1.0 wt.%, particularly preferably 0.01 - 0.5 wt.-%, in each case based on the weight of the color-changing agent according to the invention. Color-changing agents particularly preferred according to the invention are characterized in that they contain, in each case based on their weight, 0.05 - 1.5 wt.%, preferably 0.1 - 1.2 wt.%, particularly preferably 0.5 - 1 wt.%, extraordinarily preferably 0.6 - 0.9 wt.%, of xanthan and at least one further thickening polymer selected from hyaluronic acid, salts of hyaluronic acid, in particular sodium hyaluronate, sodium carboxymethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, and mixtures thereof. Further color-changing agents which are particularly preferred according to the invention are characterized in that they contain, in each case based on their weight, 0.05 - 1.5 wt.%, preferably 0.1 - 1.2 wt.%, particularly preferably 0.5 - 1 wt.%, extremely preferably 0.6 - 0.9 wt.%, of xanthan and at least one salt of hyaluronic acid in a total amount of 0.005 to 0.05 wt.-%, preferably 0.01 - 0.03 wt.%. Particularly preferred color-changing agents according to the invention are characterized in that they additionally contain, in each case based on their weight, 0.005 to 0.05 wt.%, preferably 0.01 - 0.03 wt.%, hyaluronic acid or at least one salt of hyaluronic acid. Hyaluronic acid or its salts further optimize the application properties of the color-changing agents according to the invention, in particular the gel properties during use, as well as the coloring properties, in particular with regard to color intensity and balancing power. Furthermore, it has surprisingly been found that the application properties of the color-changing agents according to the invention are further optimized, in particular the gel properties during storage and use, as well as the coloring properties, in particular with regard to color intensity and balancing power, if they additionally contain at least one of the compounds of the formula R.4 O-[G] p different polyol, selected from polyols having 2 to 20 carbon atoms and 2 to 15 hydroxy groups, whose carbon atom chain may be interrupted by one or more oxygen atoms. Preferred oxidative color-changing agents according to the invention are therefore characterized in that they additionally contain at least one of the compounds of the formula R 4 O-[G] pvarious polyols selected from polyols having 2 to 20 carbon atoms and 2 to 15 hydroxy groups, whose carbon atom chain may be interrupted by one or more oxygen atoms. Preferred polyols of this type according to the invention are selected from glycerol, 1,2-propylene glycol, 2-methyl-1,3-propanediol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, pentylene glycols such as 1,2-pentanediol and 1,5-pentanediol, hexanediols such as 1,6-hexanediol, hexantriols such as 1,2,6-hexanetriol, 1,2-octanediol, 1,8-octanediol, dipropylene glycol, tripropylene glycol, diglycerol, triglycerol, erythritol, sorbitol, PEG-3, PEG-4, PEG-6, PEG-7, PEG-8, PEG-9, PEG-10, fructose, glucose, maltose, maltitol, xylitol, mannitol, inositol, sucrose, Trehalose and xylose and mixtures thereof, with glycerin, 1,2-propylene glycol, PEG-8, 1,3-butylene glycol, 1,6-hexanediol, dipropylene glycol and xylitol and mixtures thereof being preferred.Glycerin, 1,2-propylene glycol, PEG-8, and mixtures thereof are particularly preferred polyols according to the invention; glycerin is extremely preferred. Particularly preferred oxidative color-changing agents according to the invention are characterized in that the at least one compound of the formula R. 4O-[G]p different polyol, which is selected from polyols having 2 to 20 carbon atoms and 2 to 15 hydroxy groups, whose carbon atom chain may be interrupted by one or more oxygen atoms, in a total amount of 0.5 - 20 wt.%, preferably 1 - 15 wt.%, particularly preferably 3 - 10 wt.%, extraordinarily preferably 5 - 8 wt.%, in each case based on the weight of the color-changing agent according to the invention. In a further preferred embodiment of the invention, the color-changing agents (M1) are transparent. Transparent color-changing agents (M1) are understood according to the invention to be color-changing agents which have an NTU value (nephelometric turbidity value) of zero to 150 NTU, preferably of a maximum of 80 NTU, particularly preferably of a maximum of 60 NTU, extraordinarily preferably of a maximum of 40 NTU, in each case measured at 22°C.The NTU value represents the measured value for transparency and is the turbidity of the color-changing agent measured with a calibrated nephelometer. The NTU value of the color-changing agents according to the invention can be determined, for example, using a turbidimeter, as described in the published patent application WO2016012327 A2. Color-changing agents (M1) preferred according to the invention have a turbidity measured at 22°C according to DIN EN ISO 7027 (C2) 2016-11 of 0 to 150 NTU, preferably up to 80 NTU, more preferably up to 60 NTU, even more preferably up to 40 NTU, and further preferably up to 30 NTU. Further oxidative color-changing agents preferred according to the invention have a transmittance of at least 80%, preferably 85% or more, particularly preferably 92%-100%, determined at 22°C and a light wavelength of 500 nm. According to the invention, a spectrophotometer such as LICO 400 (Lange) can be used to determine the transmission.Particularly preferred oxidative color-changing agents according to the invention are in the form of a water-based gel which, based on its weight, contains a total of zero to a maximum of 2 wt.%, preferably 0.05 to 1 wt.%, particularly preferably 0.1 to 0.5 wt.% of fatty substances. Fatty substances according to the invention are lipophilic organic substances which, at 20°C, have a water solubility of a maximum of 0.5 wt.% or less, preferably a maximum of 0.1 wt.% or less. According to the invention, these fatty substances include, in particular, oils, fats, waxes, fatty alcohols, and fatty acids. Essential oils and perfume oils or fragrances are not counted as fatty substances for the purposes of the present invention. According to the invention, a wax is understood to mean an organic compound which, under normal conditions, is soluble in bidistilled water to less than 0.5% by weight, melts at over 40°C and then forms a liquid with a low viscosity of 1 to 800 mPas at 20°C.According to the definition of the German Society for Fat Science, a wax is still malleable at 20°C, solid to brittle-hard, has a coarse to fine-crystalline structure, is translucent to opaque in color, but not glassy, ​​has a consistency and solubility that is highly temperature-dependent, and can be polished under light pressure. Fatty alcohols are defined as 1-alkanols with at least 4 carbon atoms, which can be linear (e.g., cetyl alcohol) or branched (e.g., 2-ethylhexan-1-ol). Fatty acids are defined as 1-carboxylic acids with at least 4 carbon atoms, which can be linear (e.g., oleic acid) or branched (e.g., 2-ethylhexanoic acid). All information on the physical states of substances (solid, liquid, gaseous) in this application refers to standard conditions. For the purposes of this application, "normal conditions" are a temperature of 20°C and a pressure of 1013.25 mbar.Since the agents according to the invention preferably contain fatty substances in a total amount of zero to 2 wt. %, preferably 0.01-1.5 wt. %, particularly preferably 0.1-1.0 wt. %, extraordinarily preferably 0.2-0.5 wt. %, in each case based on the weight of the oxidative color-changing agent, preferably no ammonia or ammonium hydroxide is included as an alkalizing agent. Oxidative color-changing agents with ammonia or ammonium hydroxide that are low in fatty substances release larger amounts of ammonia during the color-changing process than oxidative color-changing agents that are rich in fatty substances, so that non-volatile alkalizing agents, i.e. all alkalizing agents other than ammonia or ammonium hydroxide, are preferred according to the invention. Essential oils and perfume oils or fragrances are not counted as fatty substances within the meaning of the present invention.According to the invention, essential oils are understood to be mixtures of volatile components produced by steam distillation from plant-based raw materials, such as citrus oils. Wherever a cosmetic oil is mentioned in this application, this always refers to a cosmetic oil that is neither a fragrance nor an essential oil, is liquid under normal conditions, and is immiscible with water. The definition of a fragrance in the sense of this application corresponds to the definition commonly used by those skilled in the art, as can be found in the RÖMPP Chemistry Lexicon, as of December 2007. According to this definition, a fragrance is a chemical compound with an odor and / or taste that stimulates the receptors of the hair cells of the olfactory system (adequate stimulus).The necessary physical and chemical properties are a low molecular weight of a maximum of 300 g / mol, a high vapor pressure, minimal water and high lipid solubility, weak polarity, and the presence of at least one osmophoric group in the molecule. To distinguish volatile, low-molecular-weight substances, which are usually and also within the meaning of the present application not regarded and used as fragrances but primarily as solvents, such as ethanol, propanol, isopropanol, and acetone, from fragrances according to the invention, fragrances according to the invention have a molecular weight of 74 to 300 g / mol, contain at least one osmophoric group in the molecule, and exhibit an odor and / or taste, i.e., they stimulate the receptors of the hair cells of the olfactory system.Particularly preferred oxidative color-changing agents according to the invention are characterized in that they contain at least one essential oil, perfume oil, or fragrance, preferably in a total amount of 0.1-3% by weight, particularly preferably 0.2-1% by weight, extraordinarily preferably 0.5-0.8% by weight, in each case based on the weight of the color-changing agent according to the invention. Furthermore, it is preferred that the oxidative color-changing agents according to the invention contain at least one cationic polymer. Preferably, no cationic polymers or copolymers with acrylate-, methacrylate-, or vinyl-containing monomers, and no cationic polyurethane, are used. The cationic polymers are preferably homopolymers or copolymers or polymers based on natural polymers, wherein the quaternary nitrogen groups are present either in the polymer chain or, preferably, as a substituent on one or more of the monomers.The ammonium-containing monomers can be copolymerized with non-cationic monomers. Further cationic monomers suitable according to the invention, although less preferred, are unsaturated, radically polymerizable compounds that carry at least one cationic group, in particular ammonium-substituted vinyl monomers, such as trialkylmethacryloxyalkylammonium, trialkylacryloxyalkylammonium, dialkyldiallylammonium, and quaternary vinylammonium monomers with cyclic, cationic nitrogen-containing groups, such as pyridinium, imidazolium, or quaternary pyrrolidones, e.g., alkylvinylimidazolium, alkylvinylpyridinium, or alkylvinylpyrrolidone salts. The alkyl groups of these monomers are preferably lower alkyl groups, such as C1- to C7-alkyl groups, particularly preferably C1- to C3-alkyl groups. The ammonium group-containing monomers may be copolymerized with non-cationic monomers.Suitable comonomers include, for example, acrylamide, methacrylamide; alkyl and dialkyl acrylamide, alkyl and dialkyl methacrylamide, alkyl acrylate, alkyl methacrylate, vinyl caprolactone, vinyl caprolactam, vinyl pyrrolidone, vinyl esters, e.g., vinyl acetate, vinyl alcohol, propylene glycol, or ethylene glycol, where the alkyl groups of these monomers are preferably C1 to C7 alkyl groups, particularly preferably C1 to C3 alkyl groups. Of the multitude of these polymers, the following have proven to be particularly effective components of the inventive agents: − polymeric dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic acid and methacrylic acid. Particularly preferred polymers of this type are dimethyldiallylammonium chloride-acrylamide copolymers, especially those with the INCI name Polyquaternium-7. Polyquaternium-7 is, for example, a commercial product, Merquat. ^550. Another preferred polymer of this type is the homopolymer poly(dimethyldiallylammonium chloride), especially the homopolymers with the INCI name Polyquaternium-6. Polyquaternium-6 is, for example, commercially available as Merquat ^ 100. Other preferred polymers of this type are terpolymers of dimethyldiallylammonium chloride, acrylamide, and ammonium acrylate, especially those with the INCI name Polyquaternium-39. Polyquaternium-39 is available, for example, as the commercial product Merquat ^ 3330 and Merquat ^ 3331. Other preferred polymers of this type are copolymers of dimethyldiallylammonium chloride and acrylic acid, especially those with the INCI name Polyquaternium-22. Polyquaternium-22 is available, for example, as the commercial product Merquat ^ 280 available. − Homopolymers of the general formula -{CH2-[CR 1 COO-(CH2)mN + R 2 R 3 R 4 ]}n X-, in the R1 = -H or –CH3, R 2 , R 3 and R 4 are independently selected from C1-4-alkyl, C1-4-alkenyl or C1-4-hydroxyalkyl groups, m = 1, 2, 3 or 4, n is a natural number and X- is a physiologically acceptable organic or inorganic anion. Within the scope of these polymers, those for which at least one of the following conditions applies are preferred according to the invention: R 1 stands for a methyl group, R 2 , R 3 and R 4represent methyl groups, m has the value 2. Suitable physiologically acceptable counterions X- are, for example, halide ions, sulfate ions, phosphate ions, methosulfate ions, and organic ions such as lactate, citrate, tartrate, and acetate ions. Methosulfates and halide ions, especially chloride, are preferred. Other preferably suitable cationic polymers derived from synthetic polymers are, for example, copolymers of A1) 0.1 to 50%, preferably 10 to 50% (based on the total number of monomers in the copolymer) monomers of the formula (Ia) in which X stands for chloride, sulfate, methosulfate, and A2) monomers from the group consisting of acrylic acid, methacrylic acid, and the alkali metal and ammonium salts of these acids, wherein the monomer A2 constitutes 50 to 99.9%, preferably 50 to 90% (based on the total number of monomers in the copolymer) of the copolymer. A particularly suitable homopolymer is the optionally crosslinked poly(methacryloyloxyethyltrimethylammonium chloride) with the INCI name Polyquaternium-37. Such products are available, for example, under the names Rheocare ® CTH (Cosmetic Rheologies) and Synthalen ® CR (3V Sigma) is commercially available. The homopolymer is preferably used in the form of a non-aqueous polymer dispersion. Such polymer dispersions are available under the names Salcare ^ SC 95 and Salcare ^SC 96 is commercially available. Suitable cationic polymers derived from natural polymers are cationic derivatives of polysaccharides, for example, cationic derivatives of cellulose, starch, or guar. Chitosan and chitosan derivatives are also suitable. Cationic polysaccharides have the general formula GOB-N+R a R b R c A-. In the above formula, G is an anhydroglucose residue, for example starch or cellulose anhydroglucose; B is a divalent linking group, for example alkylene, oxyalkylene, polyoxyalkylene or hydroxyalkylene; R a , R b and R care independently alkyl, aryl, alkylaryl, arylalkyl, alkoxyalkyl or alkoxyaryl each having up to 18 C atoms, where the total number of C atoms in Ra, Rb and Rc is preferably a maximum of 20; p A- is a common counteranion, preferably chloride. Cationic, i.e. quaternized, celluloses are available on the market with different degrees of substitution, cationic charge density, nitrogen content and molecular weights. For example, Polyquaternium-67 is sold commercially under the names Polymer ® SL or polymer ® SK (Amerchol). Under the trade name Mirustyle ®CP from Croda offers another highly preferred cellulose. This is a cellulose derivatized as Trimonium and Cocodimonium Hydroxyethylcellulose with the INCI name Polyquaternium-72. Polyquaternium-72 can be used both in solid form and pre-dissolved in aqueous solution. Other cationic celluloses are available under the names Polymer JR ® 400 (Amerchol, INCI name Polyquaternium-10) and Polymer Quatrisoft ® LM-200 (Amerchol, INCI name Polyquaternium-24). Other commercial products include the compounds Celquat ^ H 100 and Celquat ^L 200. Particularly preferred cationic celluloses are Polyquaternium-10, Polyquaternium-24, Polyquaternium-67, and Polyquaternium-72. Suitable cationic guar derivatives are preferably selected from compounds with the INCI name Guar Hydroxypropyltrimonium Chloride. A suitable chitosan is sold, for example, by Kyowa Oil & Fat, Japan, under the trade name Flonac. ® A preferred chitosan salt is chitosonium pyrrolidone carboxylate, which is sold, for example, under the name Kytamer ® PC is distributed by Amerchol, USA. Other chitosan derivatives are available under the trade names Hydagen ® CMF, Hydagen ® HCMF and Chitolam ® NB / 101 are commercially available. Finally, cationic polymers based on sugars can also be used with preference according to the invention. Such compounds are, for example, cationic alkyl oligoglucosides as in the In the formula shown above, the radicals R independently of one another represent a linear or branched C6 to C30 alkyl radical, a linear or branched C6-C30 alkenyl radical. Preferably, the radical R represents a radical R selected from: lauryl, myristyl, cetyl, stearyl, oleyl, behenyl or arachidyl. The radicals R1 independently of one another represent a linear or branched C6 to C30 alkyl radical, a linear or branched C6 to C30 alkenyl radical. Preferably, the radical R represents a radical selected from butyl, capryl, caprylyl, octyl, nonyl, decanyl, lauryl, myristyl, cetyl, stearyl, oleyl, behenyl or arachidyl. The radicals R1 are particularly preferably identical.Even more preferably, the R1 radicals are selected from technical mixtures of fatty alcohol fractions consisting of C6 / C8 fatty alcohols, C8 / C10 fatty alcohols, C10 / C12 fatty alcohols, C12 / C14 fatty alcohols, and C12 / C18 fatty alcohols. Highest preference is given to those technical fatty alcohol fractions of plant origin. Particularly preferred examples of the cationic alkyl oligoglucosides are the compounds with the INCI names Polyquaternium-77, Polyquaternium-78, Polyquaternium-79, Polyquaternium-80, Polyquaternium-81, and Polyquaternium-82. Highest preference is given to the cationic alkyl oligoglucosides with the names Polyquaternium-77, Polyquaternium-81, and Polyquaternium-82. Such compounds can be purchased, for example, under the name Poly Suga® Quat from Colonial Chemical Inc. The cationic alkyl oligoglucosides are preferably present in a total amount of 0.01 to 6 wt.%, particularly preferably 0.05 - 4 wt.-%, extremely preferably 0.1-3.5 wt.%, in each case based on the weight of the agent according to the invention. The invention also encompasses the use of mixtures of cationic alkyl oligoglucosides. In this case, it is preferred if one long-chain and one short-chain cationic alkyl oligoglucoside are present simultaneously. Another cationic polymer can be obtained based on ethanolamine. The polymer is commercially available under the name Polyquaternium-71. C. l Cl Cl Cl This polymer can be purchased, for example, under the name Cola® Moist 300 P from Colonial Chemical Inc. Polyquaternium-71 is preferably present in an amount of 0.01–6 wt.%, particularly preferably 0.05–4 wt.%, extraordinarily preferably 0.1–3.5 wt.%, based in each case on the weight of the agent according to the invention. Other preferred cationic polymers are, for example, cationized honey, for example the commercial product Honeyquat. ® 50, - Vinylpyrrolidone-vinylimidazolium methochloride copolymers, such as those sold under the names Luviquat ^ FC 370, FC 550 and the INCI name Polyquaternium-16 as well as FC 905 and HM 552, - quaternized vinylpyrrolidone / dimethylaminoethyl methacrylate, for example vinylpyrrolidone / dimethylaminoethyl methacrylate methosulfate copolymer, which is sold under the trade names Gafquat ® 755 N and Gafquat ®734 is distributed by Gaf Co., USA and has the INCI name Polyquaternium-11, - quaternized polyvinyl alcohol, - as well as the polymers known under the names Polyquaternium-2, Polyquaternium-17, Polyquaternium-18 and Polyquaternium-27 with quaternary nitrogen atoms in the polymer main chain, - vinylpyrrolidone-vinylcaprolactam-acrylate terpolymers, as they are commercially available with acrylic acid esters and acrylic acid amides as the third monomer building block, for example under the name Aquaflex ®SF 40 are offered. In a particularly preferred embodiment of the invention, the agent according to the invention or used according to the invention contains, in each case based on its weight, at least one cationic polymer in a total amount of 0.01 - 2 wt.%, preferably 0.05 - 1 wt.%, particularly preferably 0.1 - 0.7 wt.%, extremely preferably 0.2 - 0.5 wt.%.In a further particularly preferred embodiment of the invention, the agent according to the invention or used according to the invention contains, in each case based on its weight, at least one cationic polymer selected from dimethyldiallylammonium chloride-acrylamide copolymers, in particular those with the INCI name Polyquaternium-7, poly(dimethyldiallylammonium chloride), terpolymers of dimethyldiallylammonium chloride, acrylamide and ammonium acrylate, in particular those with the INCI name Polyquaternium-39, and copolymers of dimethyldiallylammonium chloride and acrylic acid, in particular those with the INCI name Polyquaternium-22, and mixtures thereof, in a total amount of 0.01 - 2 wt.%, preferably 0.05 - 1 wt.%, particularly preferably 0.1 - 0.7 wt.%, extraordinarily preferably 0.2 - 0.5 wt.%.The present invention further provides a packaging unit (kit of parts) which, packaged separately, comprises the following: a) at least one container (C1) containing an agent for the oxidative color change of keratin fibers, containing: − more than 80% by weight to 99% by weight of water, − 0.1 to 1.5% by weight of iota-carrageenan, − 0.05 to 0.5% by weight of potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − at least one non-ionic surfactant selected from alkyl mono- and oligoglycosides of the formula R. 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3% by weight, − zero to less than 0.1% by weight of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, − wherein the agent has a pH in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extraordinarily preferably 8.5 to 9.5, in each case measured at a temperature of 22 °C, and b) at least one container (C2) containing an oxidizing agent preparation (M2) which contains 40 - 96% by weight, preferably 65 - 90% by weight, particularly preferably 70 – 80 wt.%, water, furthermore hydrogen peroxide in a total amount of 0.5 to 23 wt.%, more preferably 2.5 to 21 wt.-%, particularly preferably 4 to 20 wt.%, very particularly preferably 5 to 18 wt.% and extraordinarily preferably 6 to 12 wt.%, and has a pH in the range from 2.0 to 6.5, preferably 2.5 - 5.5, particularly preferably 2.8 to 4.5, in each case measured at 20°C, wherein the wt.% data relate in each case to the weight of the oxidizing agent preparation (M2), optionally comprising at least one oil and / or at least one surfactant. With regard to further preferred embodiments of the kit according to the invention, what has been said about the agents according to the invention for oxidative color change applies mutatis mutandis. The present invention further relates to the use of an agent according to any one of claims 1 to 12 for the oxidative color change of keratin fibers, in particular human hair.With regard to further preferred embodiments of the use according to the invention, what has been said regarding the agents according to the invention for oxidative color change applies mutatis mutandis. The present invention further provides a process for oxidative hair coloring, which comprises the following process steps: i) providing a cosmetic agent (M1) for oxidative hair coloring of keratinic fibers, comprising − more than 80% by weight to 99% by weight of water, − 0.1 to 1.5% by weight of iota-carrageenan, − 0.05 to 0.5% by weight of potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − 0.1 to less than 3% by weight of at least one nonionic surfactant selected from alkyl mono- and oligoglycosides of the formula R. 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, − zero to less than 0.1 wt.% of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, − wherein the oxidation dye preferably has a pH in the range from 8 to 11, in particular in the range from 8.5 to 10.7, particularly preferably in the range from 9 to 10.3, extraordinarily preferably 9.5 to 9.7, in each case measured at a temperature of 22°C, and ii) providing an oxidizing agent preparation (M2) containing 40-96 wt.%, preferably 65-90 wt.%, particularly preferably 70-80 % by weight, water, furthermore hydrogen peroxide in a total amount of 0.5 to 23% by weight, more preferably 2.5 to 21% by weight, particularly preferably 4 to 20% by weight.-%, very particularly preferably 5 to 18 wt.% and extraordinarily preferably 6 to 12 wt.%, and a pH in the range from 2.0 to 6.5, preferably 2.5 - 5.5, particularly preferably 2.8 to 4.5, in each case measured at 20°C, wherein the wt.-% details refer in each case to the weight of the oxidizing agent preparation (M2), optionally containing at least one surfactant and / or an oil, iii) mixing the cosmetic agent (M1) with the oxidizing agent preparation (M2), preferably in a weight ratio (M1):(M2) in the range from 1:0.8 to 1:2.5, preferably 1:1 to 1:2, directly thereafter iv) applying the mixture obtained in step iii) to the hair and leaving this mixture on the hair for a time of 1 to 60 minutes, preferably from 20 to 45 minutes, at room temperature and / or at 30 - 60°C, preferably at 32 - 50°C, v) rinsing the hair with water and / or a cleansing composition, and vi) optionally applying an aftertreatment agent to the hair and optionally rinsing, then drying.For oxidative hair coloring processes, the agent according to the invention (M1), which contains one or more oxidation dye precursors and optionally one or more direct dyes, is usually mixed with an aqueous oxidizing agent-containing composition (M2) to form the ready-to-use coloring agent immediately before application to the hair and then applied to the hair. The agent according to the invention (M1) and the oxidizing agent-containing composition (M2) are usually matched to one another such that, at a mixing ratio of 1:1, based on parts by weight, the finished application mixture contains an initial hydrogen peroxide concentration of 0.5-12% by weight, preferably 2-10% by weight, particularly preferably 3-6% by weight of hydrogen peroxide (calculated as 100% H2O2), in each case based on the weight of the application mixture.However, it is equally possible to match the agent according to the invention (M1) and the oxidizing agent-containing composition (M2) to one another in such a way that the concentrations required in the ready-to-use oxidizing colorant (application mixture) are obtained using mixing ratios other than 1:1, for example a weight-based mixing ratio of 1:2 or 1:3 or even 2:3. Preferred weight-based mixing ratios (M1):(M2) according to the invention are in the range from 1:0.8 to 1:2.5, particularly preferably in the range from 1:1 to 1:2. The term “room temperature” according to the invention refers to the temperature in the room in which a person usually applies a hair coloring or lightening agent, i.e. usually a bathroom or a hairdressing salon in which a temperature in the range of 10 - 29 °C prevails.Leaving the coloring or lightening application mixture in process step iv) in the hair coloring processes according to the invention or preferred according to the invention can also take place at at least 30°C, preferably at 30-60°C, particularly preferably at 32-50°C, if the hair is heated, for example, with a heat cap or with a heat lamp. The oxidizing agent composition (M2) used in color change kits according to the invention and preferred according to the invention as well as in color change processes according to the invention and preferred according to the invention contains, in each case based on its weight, 40-96% by weight, preferably 65-90% by weight, particularly preferably 70-80% by weight, of water. The oxidizing agent preparation (M2) used in color change kits according to the invention and preferred according to the invention as well as in color change processes according to the invention and preferred according to the invention further contains, in each case based on its weight, 0.5 to 23% by weight.-%, more preferably 2.5 to 21 wt.%, particularly preferably 4 to 20 wt.%, most preferably 5 to 18 wt.%, and extraordinarily preferably 6 to 12 wt.%, of hydrogen peroxide. To stabilize the hydrogen peroxide, the oxidizing agent preparation (M2) has a pH in the range of 2.0 to 6.5, preferably 2.5 to 5.5, particularly preferably 2.8 to 4.5, in each case measured at 20°C. Color-changing agents preferred according to the invention have a viscosity in the range of 6000 - 15000 mPas, preferably 6500 - 14000 mPas, particularly preferably 7000 - 13000 mPas, extraordinarily preferably 8000 - 12000 mPas, in each case measured at 20°C with a Haake Model MVII rheometer at a shear rate of 7.2 revolutions per second.The ready-to-use color-change agent obtained by mixing the agent (M1) according to the invention with the oxidizing agent preparation (M2) has a viscosity in the range of 3500–8000 mPas, preferably 4000–7000 mPas, particularly preferably 4500–6500 mPas, and extraordinarily preferably 5000–6000 mPas, measured at 20°C using a Haake Model MVII rheometer at a shear rate of 7.2 revolutions per second. Higher-viscosity application mixtures are applied to the keratin fibers with a brush. Lower-viscosity application mixtures are applied to the keratin fibers using an application bottle. Oxidative color-change processes on keratin fibers typically occur in a neutral to alkaline environment; even a slightly acidic pH value produces acceptable color results.Therefore, the pH of the agent (M1) according to the invention is in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extraordinarily preferably 8.5 to 9.5, in each case measured at a temperature of 22 °C. The ready-to-use color-change agent obtained by mixing the agent (M1) according to the invention with the oxidizing agent preparation (M2) has a pH in the range from 6.5 to 10, preferably 7 to 9.5, particularly preferably 7.5 to 9, extraordinarily preferably 7.5 to 8.5, further extraordinarily preferably 7.5 to 8, in each case measured at a temperature of 22 °C. Surprisingly, it has been found that an application mixture with a viscosity suitable for application and drip-free retention on the hair is obtained when the agent according to the invention or preferred according to the invention (M1) is mixed with an oxidizing agent preparation (M2) which contains xanthan, preferably 1 to 5 wt.-%, particularly preferably 1.5 to 4 wt.%, extraordinarily preferably 2 - 3 wt.% xanthan, in each case based on the weight of the oxidizing agent preparation (M2). The consistency of the application mixture achieved in this way leads to optimal application properties, for example for brush application. The application mixtures obtained in this way, in particular with weight-related mixing ratios (M1):(M2) in the range from 1:0.8 to 1:2.5, particularly preferably in the range from 1:1 to 1:2, preferably have a viscosity in the range from 3500 - 8000 mPas, preferably 4000 - 7000 mPas, particularly preferably 4500 - 6500 mPas, extraordinarily preferably 5000 - 6000 mPas, in each case measured at 20°C using a Haake Model MVII rheometer at a shear rate of 7.2 revolutions per second. Preferred oxidizing agent preparations (M2) used according to the invention contain at least one surfactant or one emulsifier.Preferred surfactants and emulsifiers in (M2) are selected from anionic, cationic, zwitterionic, amphoteric, and nonionic surfactants and emulsifiers, as well as mixtures thereof. Further oxidizing agent preparations (M2) preferably used according to the invention contain at least one zwitterionic and / or at least one amphoteric surfactant and / or at least one anionic surfactant. Zwitterionic surfactants are surface-active compounds that carry at least one quaternary ammonium group and at least one carboxylate, sulfonate, or sulfate group in the molecule.Particularly suitable zwitterionic surfactants are the so-called betaines, such as N-alkyl-N,N-dimethylammonium glycinates, for example, cocoalkyl dimethylammonium glycinate, N-acylaminopropyl-N,N-dimethylammonium glycinates, for example, cocoacylaminopropyl dimethylammonium glycinate, and 2-alkyl-3-carboxymethyl-3-hydroxyethyl-imidazolines, each with 8 to 18 carbon atoms in the alkyl or acyl group, as well as cocoacylaminoethyl hydroxyethylcarboxymethylglycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known by the INCI name Cocamidopropyl Betaine. Amphoteric surfactants are understood to be surface-active compounds which, in addition to a C8-C24 alkyl or acyl group in the molecule, contain at least one free amino group and at least one -COOH- or -SO3H- group and are capable of forming internal salts.Examples of suitable amphoteric surfactants are N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids, and alkylaminoacetic acids, each containing approximately 8 to 24 carbon atoms in the alkyl group. Particularly preferred amphoteric surfactants are N-cocoalkylaminopropionate, cocoacylaminoethylaminopropionate, and C. 12 -C 18-Acylsarcosine. Suitable anionic surfactants are all anionic surface-active substances suitable for use on the human body that contain a water-solubilizing anionic group, for example a carboxylate, sulfate, sulfonate, or phosphate group, and a lipophilic alkyl group with approximately 8 to 30 carbon atoms, preferably 8 to 24 carbon atoms, in the molecule. The molecule may also contain glycol or polyglycol ether groups, ester, ether, and amide groups, as well as hydroxyl groups.Examples of suitable anionic surfactants are, in the form of sodium, potassium and ammonium as well as mono, di and trialkanolammonium salts with 2 to 4 C atoms in the alkanol group, linear and branched fatty acids with 8 to 30 C atoms (soaps), polyethoxylated ether carboxylic acids, acyl sarcosides, acyl taurides, acyl isethionates, sulfosuccinic acid mono- and dialkyl esters and sulfosuccinic acid mono-alkyl polyoxyethyl esters with 1 to 6 ethylene oxide groups, linear alkanesulfonates, linear alpha-olefinsulfonates, sulfonates of unsaturated fatty acids with up to 6 double bonds, alpha-sulfofatty acid methyl esters of fatty acids, C8-C. 20 -alkyl sulfates and C8-C 20Alkyl ether sulfates with up to 15 oxyethyl groups, mixtures of surface-active hydroxysulfonates, sulfated hydroxyalkyl polyethylene and / or hydroxyalkylene propylene glycol ethers, esters of tartaric acid or citric acid with ethoxylated or propoxylated fatty alcohols, optionally polyethoxylated alkyl and / or alkenyl ether phosphates, sulfated fatty acid alkylene glycol esters, and monoglyceride sulfates and monoglyceride ether sulfates. Preferred anionic surfactants are soaps, C8-C20 alkyl sulfates, C8-C20 alkyl ether sulfates, and C8-C20 ether carboxylic acids with 8 to 20 carbon atoms in the alkyl group and up to 12 ethylene oxide groups in the molecule. Sodium cetearyl sulfate is particularly preferred. The total amount of surfactant or surfactants in the oxidizing agent preparations (M2) used according to the invention is preferably 0.1 - 5 wt.%, preferably 0.5 - 4 wt.% and particularly preferably 1 - 3.3 wt.%, in each case based on the weight of the oxidizing agent preparation (M2).Further particularly preferred oxidizing agent preparations (M2) are characterized in that they contain, in each case based on their weight, at least one non-ionic surfactant in a total amount of 0.1 - 5 wt.%, preferably 0.5 - 4 wt.% and particularly preferably 1 - 3.3 wt.%. In a further preferred embodiment of the invention, the oxidizing agent preparation (M2) used according to the invention contains at least one cationic surfactant, preferably in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.%, extraordinarily preferably 0.3 - 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2). Cationic surfactants are understood to be surfactants, i.e. surface-active compounds, each with one or more positive charges. Cationic surfactants contain exclusively positive charges.These surfactants are typically composed of a hydrophobic moiety and a hydrophilic head group, with the hydrophobic moiety generally consisting of a hydrocarbon backbone (e.g., consisting of one or two linear or branched alkyl groups), and the positive charge(s) located in the hydrophilic head group. Cationic surfactants adsorb at interfaces and aggregate in aqueous solution above the critical micelle formation concentration to form positively charged micelles. According to the invention, cationic surfactants of the quaternary ammonium compound, esterquat, and alkylamidoamine type are preferred. Preferred quaternary ammonium compounds are ammonium halides, such as alkyltrimethylammonium chlorides, dialkyldimethylammonium chlorides, trialkylmethylammonium chlorides, and the imidazolium compounds known under the INCI names Quaternium-27 and Quaternium-83.Further preferred quaternary ammonium compounds are tetraalkylammonium salts, such as in particular Quaternium-52, a poly(oxy-1,2-ethanediyl), ((octadecylnitrilio)tri-2,1-ethanediyl)tris(hydroxy)phosphate (1:1) salt, which has the general structural formula (III) in which x + y + z = 10. The long alkyl groups of the above-mentioned surfactants preferably have 10 to 22, particularly preferably 12 to 18 carbon atoms. Behenyltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride are particularly preferred, with stearyltrimethylammonium chloride being extremely preferred. Other cationic surfactants suitable according to the invention are quaternized protein hydrolysates. Alkylamidoamines are usually prepared by amidation of natural or synthetic fatty acids and fatty acid cuts with dialkylaminoamines. A compound from this group of substances suitable according to the invention is tegoamide. ®S 18 (Stearamidopropyldimethylamine). Esterquats are substances that contain both at least one ester function and at least one quaternary ammonium group as a structural element. Preferred esterquats are quaternized ester salts of fatty acids with triethanolamine, quaternized ester salts of fatty acids with diethanolalkylamines, and quaternized ester salts of fatty acids with 1,2-dihydroxypropyldialkylamines. Such products are marketed under the trademarks Stepantex, Dehyquart, and Armocare. C10-C22 alkyltrimethylammonium chlorides have proven particularly suitable in terms of optimal application properties and optimal color results. Particularly preferred oxidizing agent preparations (M2) used according to the invention are therefore characterized in that they contain at least one cationic surfactant in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.%, extraordinarily preferably 0.3 - 0.9 wt.-%, in each case based on the weight of the oxidizing agent preparation (M2), wherein preferably at least one surfactant selected from C10-C22-alkyltrimethylammonium chlorides, in particular selected from behenyltrimethylammonium chloride, stearyltrimethylammonium chloride and cetyltrimethylammonium chloride and mixtures of these surfactants is contained. Extraordinarily preferred oxidizing agent preparations (M2) used according to the invention contain stearyltrimethylammonium chloride in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.%, extraordinarily preferably 0.3 - 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2). Another packaging unit preferred according to the invention (kit of parts) is characterized in that the oxidizing agent preparation (M2) contains at least one cationic surfactant, preferably in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.-%, extremely preferably from 0.3 to 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2). A further packaging unit (kit of parts) preferred according to the invention is characterized in that the oxidizing agent preparation (M2) contains at least one cationic surfactant, which is preferably selected from stearyltrimethylammonium chloride, in a total amount of 0.05 to 3 wt.%, particularly preferably from 0.1 to 1.5 wt.%, extremely preferably from 0.3 to 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2). A preferred method for oxidative hair coloring according to the invention is characterized in that the oxidizing agent preparation (M2) contains at least one cationic surfactant, preferably in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.%, extraordinarily preferably 0.3 - 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2).Another preferred method according to the invention for the oxidative color change of keratin fibers is characterized in that the oxidizing agent preparation (M2) contains at least one cationic surfactant, which is preferably selected from stearyltrimethylammonium chloride, in a total amount of 0.05 - 3 wt.%, particularly preferably 0.1 - 1.5 wt.%, extraordinarily preferably 0.3 - 0.9 wt.%, in each case based on the weight of the oxidizing agent preparation (M2). Surprisingly, it has been found that an application mixture with a viscosity suitable for application and drip-free retention on the hair is obtained if the agent according to the invention or preferred according to the invention (M1) is mixed with an oxidizing agent preparation (M2) which contains at least one oil, preferably at least one oil in a total amount of 0.5-40 wt.%, preferably 1-25 wt.%, particularly preferably 3-20 wt.%, extraordinarily preferably 5-17 wt.-%, in each case based on the weight of the oxidizing agent preparation (M2). The consistency of the application mixture achieved in this way leads to optimal application properties, for example for brush application. The application mixtures obtained in this way, in particular with weight-related mixing ratios (M1):(M2) in the range from 1:0.8 to 1:2.5, particularly preferably in the range from 1:1 to 1:2, preferably have a viscosity in the range from 3500 - 8000 mPas, preferably 4000 - 7000 mPas, particularly preferably 4500 - 6500 mPas, extraordinarily preferably 5000 - 6000 mPas, in each case measured at 20°C using a Haake Model MVII rheometer at a shear rate of 7.2 revolutions per second. Further oxidizing agent preparations (M2) preferably used according to the invention contain at least one oil.According to the invention, the at least one oil is preferably selected from mineral oils, branched fatty alcohols having 8-24 carbon atoms, dialkyl ethers having 6 to 18 carbon atoms in the alkyl groups, esters of linear or branched saturated or unsaturated fatty alcohols having 2-30 carbon atoms with linear or branched saturated or unsaturated fatty acids having 2-30 carbon atoms, which may be hydroxylated, and mixtures of the aforementioned substances. Mineral oil is particularly preferred. Preferred branched fatty alcohols having 8-24 carbon atoms according to the invention are 2-octyl-1-dodecanol, 2-hexyl-1-decanol, 2-ethyl-1-hexanol, and isostearyl alcohol, as well as mixtures thereof. 2-octyl-1-dodecanol is extremely preferred.Preferred dialkyl ethers according to the invention with 6 to 18 C atoms in the alkyl groups are di-n-alkyl ethers with a total of 12 to 36 C atoms, in particular 16 to 24 C atoms in the molecule, such as di-n-octyl ether, di-n-decyl ether, di-n-nonyl ether, di-n-undecyl ether, di-n-dodecyl ether, di-n-octadecyl ether, n-hexyl-n-octyl ether, n-octyl-n-decyl ether, n-decyl-n-undecyl ether, n-undecyl-n-dodecyl ether, and n-hexyl-n-undecyl ether. Likewise preferred dialkyl ethers are those with branched alkyl groups each having 6 to 18 C atoms, in particular with alkyl groups substituted in the 2-position with an ethyl group. Preferred branched-chain dialkyl ethers with 6 to 18 carbon atoms in the alkyl group are selected from di-(2-ethylhexyl) ether and di-(2-ethyldecyl) ether. Particularly preferred is di-n-octyl ether (INCI: Dicaprylyl ether), which is commercially available, for example, under the name Cetiol. ®OE is available from BASF. Preferred esters of linear or branched saturated or unsaturated fatty alcohols having 2 - 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having 2 - 30 carbon atoms, which may be hydroxylated, are selected from 2-hexyldecyl stearate (Eutanol ® G 16 S), 2-hexyldecyl laurate, isodecyl neopentanoate, isononyl isononanoate, 2-ethylhexyl palmitate (Cegesoft ® C 24) and 2-ethylhexyl stearate (Cetiol ®868). Also preferred are isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate, isopropyl oleate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanoate, 2-ethylhexyl laurate, 2-Ethylhexyl isostearate, 2-Ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid 2-butyloctanoate, diisotridecyl acetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl rucate, erucyl oleate, erucyl rucate, Ethylene glycol dioleate and ethylene glycol dipalmitate. Kits, uses and methods preferred according to the invention are characterized in that the composition (M2) used for their preparation contains - based on its weight - at least one oil in a total amount of 0.5-40 wt.%, preferably 1-25 wt.%, particularly preferably 3-20 wt.%, extraordinarily preferably 5-17 wt.%.Further kits, uses, and methods preferred according to the invention are characterized in that the composition (M2) used for their preparation contains, based on its weight, at least 0.5-40 wt. %, preferably 1-25 wt. %, particularly preferably 3-20 wt. %, extraordinarily preferably 5-17 wt. %, of mineral oil. The oxidative color-changing agent (M1) according to the invention is mixed with an oxidizing agent preparation (M2) to form a ready-to-use agent containing at least one oxidizing agent. Preferred oxidizing agents are selected from peroxo compounds, preferably selected from hydrogen peroxide, solid addition compounds of hydrogen peroxide with inorganic or organic compounds, such as sodium perborate, sodium percarbonate, magnesium percarbonate, sodium percarbamide, polyvinylpyrrolidone. .n H2O2 (n is a positive integer greater than 0), urea peroxide and melamine peroxide, further selected from diammonium peroxodisulfate (also referred to as ammonium persulfate), disodium peroxodisulfate (also referred to as sodium persulfate) and dipotassium peroxodisulfate (also referred to as potassium persulfate) and from mixtures of these oxidizing agents. Oxidizing agents used with particular preference according to the invention are aqueous hydrogen peroxide solutions. The concentration of a hydrogen peroxide solution is determined on the one hand by the legal requirements and on the other hand by the desired effect; 6 to 12% by weight solutions in water are preferably used. Kits, uses and methods preferred according to the invention are characterized in that the composition (M2) used for their preparation - based on its weight - 1 - 24% by weight, preferably 4 - 10% by weight, particularly preferably 3 - 6% by weight.-% hydrogen peroxide (calculated as 100% H2O2). For processes for oxidative color change, the agent according to the invention (M1), which optionally contains one or more oxidation dye precursors and optionally one or more direct dyes, is usually mixed with an aqueous oxidizing agent-containing composition (M2) shortly before application to the hair to form the ready-to-use agent and then applied to the hair. In most cases, the color-changing agent (M1) according to the invention and the oxidizing agent-containing composition (M2) are matched to one another in such a way that, at a mixing ratio of 1 to 1, based on parts by weight, an initial concentration of hydrogen peroxide of 0.5 - 12 wt.%, preferably 2 - 10 wt.%, particularly preferably 3 - 6 wt.% hydrogen peroxide (calculated as 100% H2O2) based on the weight of the ready-to-use agent is present in the ready-to-use agent.However, it is equally possible to match the colorant (M1) according to the invention and the oxidizing agent-containing composition (M2) to one another in such a way that the concentrations required in the ready-to-use agent are obtained by mixing ratios other than 1:1, for example by a weight-based mixing ratio of 1:2 or 1:3 or even 2:3. Preferred weight-based mixing ratios (M1):(M2) according to the invention are in the range from 1:0.8 to 1:2.5, particularly preferably in the range from 1:1 to 1:2. The ready-to-use color-changing agent obtained by mixing the agent (M1) according to the invention with the oxidizing agent preparation (M2) preferably has a pH in the range of 6.5-10, more preferably 7-9.5, particularly preferably 7.5-9, extraordinarily preferably 7.5-8.5, further extraordinarily preferably 7.5-8, in each case measured at a temperature of 22 °C.For coloring that requires a strong lightening of very dark hair, the use of hydrogen peroxide or its adducts with organic or inorganic compounds is often not sufficient. In these cases, a combination of hydrogen peroxide and peroxodisulfate salts (persulfate salts) is generally used. Preferred persulfate salts are ammonium peroxydisulfate, potassium peroxydisulfate, sodium peroxydisulfate, and mixtures thereof. The at least one persulfate salt is preferably present in a total amount of 0.1 to 25 wt.%, particularly preferably in a total amount of 1 to 15 wt.%, based on the weight of the ready-to-use agent. With regard to further preferred embodiments of the process according to the invention, what has been said about the agents according to the invention and about the oxidizing agent preparations used according to the invention applies mutatis mutandis. Examples 1. The following coloring agents orCompositions (M1) prepared (gels, all amounts in wt.%): coloring gel according to the invention (M1-1) Glycerin 5.000 2-Phenoxyethanol 1.000 Xanthan Gum 0.800 Sodium Hyaluronate 0.030 iota-Carrageenan Chondrus Crispus Powder (Carrageenan) 0.800 Steareth-100 0.300 C8-10-Alkylglucosides (Caprylyl / Capryl Glucoside) 0.500 C10-16-Alkylpolyglucosides DP 1.6 (Coco-Glucosides) 0.500 Potassium hydroxide 0.300 Succinic acid 0.400 L-Arginine 0.100 Lysine hydrochloride 0.100 Trisodium ethylenediamine disuccinate 0.050 Potassium dihydrogen phosphate 0.300 2-Methyl-p-phenylenediamine sulfate 0.100 2-Methylresorcinol 0.045 2-Amino-3-hydroxypyridine 0.007 3-Aminophenol 0.005 2-Aminoethanol (Monoethanolamine) 0.160 Sodium sulfite 0.300 PPG-1-PEG-9 Lauryl Glycol Ether 1.000 Parfum 0.500 Water ad 100.00 Inventive coloring gel (M1-2) Glycerin 5.000 Xanthan Gum 0.900 Sodium hyaluronate 0.050 iota-carrageenan Chondrus Crispus Powder (carrageenan) 0.400 Steareth-100 0.500 C8-10-alkylglucoside (caprylyl / capryl glucoside) 0.400 C10-16-alkylpolyglucoside DP 1.6 (Coco-Glucoside) 0,400 Kaliumhydroxid 0,200 Tetranatrium-EDTA 0,250 Kaliumdihydrogenphosphat 0,300 2-Methoxymethyl-p-phenylendiaminsulfat 0,150 2-Methylresorcin 0,045 2-Amino-3-hydroxypyridin 0,007 3-Aminophenol 0,020 2-Aminoethanol (Monoethanolamin) 0,300 Natriumsulfit 0,300 PPG-1-PEG-9 Lauryl Glycol Ether 0,500 Parfum 0,500 Wasser ad 100,00 erfindungsgemäßes Färbegel (M1-3) Glycerin 7,500 Xanthan Gum 0,900 iota-Carrageen Chondrus Crispus Powder (Carrageenan) 0,800 Steareth-100 1,000 C8-10-Alkylglucoside (Caprylyl / Capryl Glucoside) 0,800 C10-16-Alkylpolyglucoside DP 1.6 (Coco-Glucoside) 0,800 Kaliumhydroxid 0,300 Bernsteinsäure 0,200 Trinatrium-Ethylendiamindisuccinat 0,300 Kaliumdihydrogenphosphat 0,300 2-beta-Hydroxyethyl-p-phenylendiaminsulfat 0,200 2-Methylresorcin 0,045 2-Amino-3-hydroxypyridin 0,050 3-Aminophenol 0,005 2-Aminoethanol (Monoethanolamin) 0,400 Natriumsulfit 0,300 Parfum 0,500 Wasser ad 100,00 erfindungsgemäßes Färbegel (M1-4) Glycerin 6,000 2-Phenoxyethanol 0,500 Xanthan Gum 0,800 Natriumhyaluronat 0,030 iota-Carrageen Chondrus Crispus Powder (Carrageenan) 0,800 Steareth-100 0,300 C8-10-Alkylglucoside (Caprylyl / Capryl Glucoside) 0,500 C10-16-Alkylpolyglucoside DP 1.6 (Coco-Glucoside) 0,500 Kaliumhydroxid 0,300 Bernsteinsäure 0,400 L-Arginin 0,100 Lysinhydrochlorid 0,100 Trinatrium-Ethylendiamindisuccinat 0,100 Kaliumdihydrogenphosphat 0,300 p-Phenylendiamin 0,350 p-Aminophenol 0,150 N,N-bis-(2-Hydroxyethyl)-p-phenylendiaminsulfat 0,450 4-Amino-3-methylphenol (4-Amino-m-cresol) 0,500 m-Aminophenol 0,100 Hydroxyethyl-3,4-methylendioxyanilin HCl 0,500 4-Amino-2-hydroxytoluen 0,100 2,4-Diaminophenoxyethanol HCl 0,010 1-Phenyl-3-methyl-5-pyrazolon 0,180 2-Aminoethanol (Monoethanolamin) 0,160 Natriumsulfit 0,300 PPG-1-PEG-9 Lauryl Glycol Ether 1,000 Parfum 0,500 Wasser ad 100,00 erfindungsgemäßes Färbegel (M1-5) Glycerin 6,000 2-Phenoxyethanol 0,500 Xanthan Gum 0,800 Natriumhyaluronat 0,030 iota-Carrageen Chondrus Crispus Powder (Carrageenan) 0,800 Steareth-100 0,300 C8-10-Alkylglucoside (Caprylyl / Capryl Glucoside) 0,500 C10-16-Alkylpolyglucoside DP 1.6 (Coco-Glucoside) 0.500 Potassium hydroxide 0.300 Succinic acid 0.400 L-Arginine 0.100 Lysine hydrochloride 0.100 Trisodium ethylenediamine disuccinate 0.100 Potassium dihydrogen phosphate 0.3001-Hydroxyethyl 4,5-diaminopyrazole sulfate. 0,780 2-Methoxymethyl-p-phenylenediamine 1.800 m-Aminophenol 0.360 Hydroxyethyl-3,4-methylenedioxyaniline HCl 1.010 1-Naphthol 1.030 2-Aminoethanol (Monoethanolamine) 0.300 Sodium Sulphite 0.300 PPG-1-PEG-9 Lauryl Glycol Ether 1.000 Perfume 0.500 Water ad 100.00 Coloring gel according to the invention (M1-6) Glycerin 6.000 2-phenoxyethanol 0.500 C8-10 alkyl glucosides (caprylyl / capryl Glucosides) 0.500 C10-16-alkylpolyglucoside DP 1.6 (Coco-Glucosides) 0.500 Potassium hydroxide 0.300 Succinic acid 0.400 L-arginine 0.100 Lysine hydrochloride 0.100 Trisodium ethylenediamine disuccinate 0.100 Potassium dihydrogen phosphate 0.3002-(2,5-diaminophenyl)ethanol sulfate 1,5461-Hydroxyethyl 4,5-diaminopyrazolsulfat 0,453m-Aminophenol 0.002 2,7-Naphthalenediol 0.145 4-Amino-2-hydroxytoluene 0.257 Hydroxyethyl-3,4-methylenedioxyaniline HCl 1.100 2-Aminoethanol (Monoethanolamine) 0.300 Sodium sulfite 0.300 PPG-1-PEG-9 Lauryl Glycol Ether 1.000 Perfume 0.500 Water ad 100.00 The following oxidation compositions (M2) were prepared (all amounts in wt%): Developer emulsion (M2-1) (9 wt% H2O2) Mineral oil 17.00 Hydrogen peroxide 9.00 Cetearyl alcohol 3.50 PEG-40 Castor oil 0.70 Sodium cetearyl sulfate 0.40 Etidronic acid 0.20 Potassium hydroxide 0.12 Disodium pyrophosphate 0.10 2,6-Dicarboxypyridine 0.10 Sodium benzoate 0.04 Sodium sulfate 0.01 Sodium chloride 0.01 Water 68.82 Developer emulsion (M2-2) (12 wt.-% H2O2) Mineral oil 17.00 Hydrogen peroxide 12.00 Cetearyl alcohol 3.50 PEG-40 Castor oil 0.70 Sodium cetearyl sulfate 0.40 Etidronic acid 0.20 Potassium hydroxide 0.12 Disodium pyrophosphate 0.10 2,6-Dicarboxypyridine 0.10 Sodium benzoate 0.04 Sodium sulfate 0.01 Sodium chloride 0.01 Water 65.82 Developer emulsion (M2-3) (4 wt.% H2O2) Developer 4% Sodium benzoate 0.04 2,6-Dicarboxypyridine 0.10 Disodium pyrophosphate 0.10 Potassium hydroxide 0.15 Propanediol-1,2 1.50 Etidronic acid 0.24 Paraffinum liquidum 0.30 Isopropyl alcohol 0.08 Steartrimonium chloride 0.31 Ceteareth-20 1.00 Cetearyl Alcohol 3.40 Hydrogen peroxide 4.00 Perfume 0.10 Demineralized water 88.68 2. Coloring To produce ready-to-use oxidative coloring agents, one of the agents according to the invention (M1-1), (M1-2), (M1-3), (M1-4), (M1-5) or (M1-6) was mixed in a weight ratio of 1:1 with one of the oxidizing agent preparations (M2-1) or (M2-2) or (M2-3).The oxidative dyes prepared in this way were each applied in a defined amount (4 g of oxidative dye per 1 g of yak hair) to lying yak hair strands (12 strands per oxidative dye) and left on the hair strands for a contact time of 30 minutes at 32°C. The remaining dyes were then rinsed out of the hair strands with lukewarm water for 2 minutes, and the strands were first dried with a towel and then blow-dried. Intensely colored strands were obtained. When the aforementioned dyes according to the invention were applied to the hair of test subjects, the dyes could be easily prepared homogeneously by mixing components (M1) and (M2) by hand. They were then effortlessly applied to the hair to be colored and remained there for the contact time of 30 minutes without dripping.Here, too, intense and homogeneous colorations were obtained along the entire length of the keratin fibers. Non-inventive coloring gel (M1-7) Propane-1,2-diol 2.000 Xanthan Gum 0.900 Carbomer 0.900 C8-10-Alkylglucosides (Caprylyl / Capryl Glucoside) 0.600 C10-16-Alkylpolyglucosides DP 1.6 (Coco-Glucoside) 0.600 Potassium hydroxide 0.300 Succinic acid 0.400 L-Arginine 0.100 Lysine hydrochloride 0.100 Trisodium ethylenediamine disuccinate 0.050 Potassium dihydrogen phosphate 0.300 2-Methyl-p-phenylenediamine sulfate 0.100 2-Methylresorcinol 0.045 2-Amino-3-hydroxypyridine 0.007 3-Aminophenol 0.005 2-Aminoethanol (Monoethanolamine) 1.500 Sodium sulfite 0.300 PPG-1-PEG-9 Lauryl Glycol Ether 0.500 Perfume 0.500 Water ad 100.00 To produce ready-to-use oxidative coloring agents, the non-inventive agent (M1-7) was mixed in a weight ratio of 1:1 with one of the oxidizing agent preparations (M2-1) or (M2-2) or (M2-3).The oxidative dyes prepared in this way were each applied in a defined amount (4 g of oxidative dye per 1 g of yak hair) to lying yak hair strands (12 strands per oxidative dye) and left on the strands for a contact time of 30 minutes at 32°C. The remaining dyes were then rinsed out of the strands with lukewarm water for 2 minutes, and the strands were first dried with a towel and then blow-dried. Intensely colored strands were obtained. When the aforementioned dyes according to the invention were applied to the hair of test subjects, the dyes could be easily prepared homogeneously by mixing components (M1) and (M2) by hand.The subsequent application to the hair to be colored proved more difficult than with the colorants according to the invention because the resulting gels were less rigid and adhered less well to the strands. Furthermore, the colorants began to drip down from the hair approximately 10 minutes after application, a phenomenon that continued to increase during the 30-minute exposure time. The intensity and homogeneity of the colorations—along the entire length of the keratin fibers—were inferior to the colorations achieved with the colorants according to the invention.

Claims

Claims:

1. Agent for the oxidative color change of keratin fibers, in particular human hair, containing, in each case based on its weight, − more than 80 wt.% to 99 wt.% water, − 0.1 to 1.5 wt.% iota-carrageenan, − 0.05 to 0.5 wt.% potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − at least one non-ionic surfactant selected from alkyl mono- and oligoglycosides of the formula R 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3% by weight, − zero to less than 0.1% by weight of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, the agent having a pH in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extraordinarily preferably 8.5 to 9.5, in each case measured at a temperature of 22 °C.

2. The agent according to claim 1, characterized in that the total content of surfactants is 0.1 to 4 wt.%, preferably 0.5 to 3 wt.%, particularly preferably 1 to 2.6 wt.%, based in each case on the weight of the agent.Agent according to claim 1 or 2, characterized in that only non-ionic surfactants are contained.

4. Agent according to one of claims 1 to 3, characterized in that 0.05 to 1.5 wt.% xanthan gum are additionally contained, based on the weight of the agent.

5. Agent according to one of claims 1 to 4, characterized in that 0.005 to 0.05 wt.% hyaluronic acid or at least one salt of hyaluronic acid are additionally contained, based on the weight of the agent.

6. Agent according to one of claims 1 to 5, characterized in that at least one of the compounds of the formula R. 4 O-[G]p different polyol, selected from polyols having 2 to 20 carbon atoms and 2 to 15 hydroxy groups, whose carbon atom chain may be interrupted by one or more oxygen atoms.

7. Agent according to claim 6, characterized in that the at least one polyol which is Compounds of the formula R 4 O-[G]pis different, is contained in a total amount of 0.5 - 20 wt.%, preferably 1 - 15 wt.%, particularly preferably 3 - 10 wt.%, extraordinarily preferably 5 - 8 wt.%, in each case based on the weight of the agent.

8. Agent according to one of claims 1 to 7, characterized in that fatty substances are contained in a total amount of zero to 2 wt.%, preferably 0.01 - 1.5 wt.%, particularly preferably 0.1 - 1.0 wt.%, extraordinarily preferably 0.2 - 0.5 wt.%, in each case based on the weight of the agent.

9. Agent according to one of claims 1 - 8, characterized in that the at least one alkalizing agent is selected from alkanolamines, alkali hydroxides, basic amino acids, alkali metal metasilicates, alkali metal disilicates, alkali phosphates and dialkali monohydrogen phosphates and mixtures of these substances.

10. Agent according to one of claims 1 to 9, characterized in that it contains no ammonia and no ammonium hydroxide. 11.A composition according to any one of claims 1 to 10, characterized in that it contains no ionic surfactant.

12. A composition according to any one of claims 1 to 11, characterized in that it contains no polymer or copolymer with acrylate-, methacrylate-, or vinyl-containing monomers, and no polyurethane.

13. Use of a composition according to any one of claims 1 to 12 for the oxidative color change of keratin fibers, in particular human hair.

14. A process for oxidative color change, comprising the following process steps: i) providing a cosmetic agent (M1) for oxidative color change of keratinic fibers according to one of claims 1 to 12, containing − more than 80% by weight to 99% by weight of water, − 0.1 to 1.5% by weight of iota-carrageenan, − 0.05 to 0.5% by weight of potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − at least one non-ionic surfactant selected from alkyl mono- and oligoglycosides of the formula R. 4O-[G] p , in the R 4 represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3% by weight, − zero to less than 0.1% by weight of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, − wherein the agent has a pH in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extremely preferably 8.5 to 9.5, in each case measured at a temperature of 22 °C, and ii) providing an oxidizing agent preparation (M2) containing 40-96% by weight, preferably 65-90% by weight, particularly preferably 70-80% by weight, water, furthermore hydrogen peroxide in a total amount of 0.5 to 23% by weight, further preferably 2.5 to 21% by weight, particularly preferably 4 to 20% by weight, very particularly preferably 5 to 18% by weight and extremely preferably 6 to 12% by weight, and a pH in the range from 2.0 to 6.5, preferably 2.5 - 5.5, particularly preferably 2.8 to 4.5, each measured at 20°C, wherein the weight.% values ​​refer in each case to the weight of the oxidizing agent preparation (M2), optionally containing at least one oil and / or at least one surfactant, iii) mixing the cosmetic agent (M1) with the oxidizing agent preparation (M2), preferably in a weight ratio (M1):(M2) in the range from 1:0.8 to 1:2.5, preferably 1:1 to 1:2, directly thereafter iv) applying the mixture obtained in step iii) to the hair and leaving this mixture on the hair for a time of 1 to 60 minutes, preferably from 20 to 45 minutes, at room temperature and / or at 30-60°C, preferably at 32-50°C, v) rinsing the hair with water and / or a cleansing composition, and vi) optionally applying an aftertreatment agent to the hair and optionally rinsing, then drying. 15.Packaging unit (kit of parts) which - packaged separately - comprises the following: a) at least one container (C1) containing an agent for the oxidative color change of keratinic fibers according to one of claims 1 to 12, containing: − more than 80% by weight to 99% by weight of water, − 0.1 to 1.5% by weight of iota-carrageenan, − 0.05 to 0.5% by weight of potassium ions in the form of at least one potassium salt, − at least one alkalizing agent, − at least one non-ionic surfactant selected from alkyl mono- and oligoglycosides of the formula R. 4 O-[G] p , in the R 4represents an alkyl or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents a positive rational number in the range from 1 to 6, in a total amount of 0.1 to less than 3% by weight, − zero to less than 0.1% by weight of peroxide compounds, − optionally at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type, − wherein the agent has a pH in the range from 7 to 11, preferably in the range from 7.5 to 10.7, particularly preferably in the range from 8 to 10, extraordinarily preferably 8.5 to 9.5, in each case measured at a temperature of 22°C, and b) at least one container (C2) containing an oxidizing agent preparation (M2) which contains 40-96% by weight, preferably 65-90% by weight, particularly preferably 70-80% by weight, of water, furthermore hydrogen peroxide in a total amount of 0.5 to 23% by weight, further preferably 2.5 to 21% by weight, particularly preferably 4 to 20% by weight, very particularly preferably 5 to 18% by weight and extraordinarily preferably 6 to 12% by weight, and has a pH in the range from 2.0 to 6.5, preferably 2.5-5.5, particularly preferably 2.8 to 4.5, in each case measured at 20°C, wherein the wt% data in each case refer to the weight of the oxidizing agent preparation (M2), optionally containing at least one oil and / or at least one surfactant.

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