Ready-to-use composition, process and kit for the oxidative dyeing of keratin materials

Abstract

The present invention relates to a ready-to-use composition for oxidative dyeing of keratin materials, in particular human hair, to a multi-compartment kit for oxidative dyeing of keratin materials, in particular human hair, and to a method for dyeing keratin materials, in particular human hair, using said ready-to-use composition or said multi-compartment kit.

Description

Technical Field

[0001] This invention relates to a ready-to-use composition for oxidative dyeing of keratin materials, particularly human hair, a multi-compartment kit for oxidative dyeing of keratin materials, particularly human hair, and a method for dyeing keratin materials, particularly human hair, using the ready-to-use composition or the multi-compartment kit. Background Technology

[0002] With rising living standards and increased public interest in beauty, people's desire to express themselves through cosmetics is growing stronger. In particular, changing hair color has become common among people of different ages and genders.

[0003] To change hair color, those skilled in the art are familiar with various dyeing systems based on the dyeing requirements. For short-term dyeing, direct dyes and / or pigments can be used. To achieve a lasting dyeing effect, oxidative dyeing systems are typically used. In an oxidative dyeing system, one part contains an oxidative dye precursor, and the other part contains an oxidizing agent. The oxidative dye precursor is usually a colorless or light-colored compound. When the two parts are mixed, the oxidative dye precursor is oxidized by the oxidizing agent and generates a colored compound through an oxidative condensation process.

[0004] Typically, oxidative dyeing systems are provided in two or more parts before use to prevent the oxidative dye precursor from contacting the oxidant. During the oxidative dyeing process, the two or more parts are mixed together, applied to the fibers, left for a period of time, and then rinsed off the fibers. The resulting color can be durable, strong, and resistant to external influences such as light, harsh weather, washing, perspiration, and / or friction.

[0005] Currently, commercially available oxidative coloring systems require at least 30 minutes on the hair to achieve satisfactory coloring results, which is time-consuming. With today's fast-paced lifestyle, consumers expect to achieve rapid coloring with oxidative coloring systems, that is, to obtain strong color in a shorter time.

[0006] Therefore, there is a need in this field to improve the staining speed of oxidative staining systems. Summary of the Invention

[0007] Through in-depth research, the inventors discovered that by using oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate in an oxidative dyeing system, combined with a high content of fatty substances, the dyeing speed of the oxidative dyeing system can be significantly improved. In other words, a strong coloring effect can be obtained in a shorter hair dyeing time.

[0008] In a first aspect, this application provides a ready-to-use composition for oxidative dyeing of keratin materials, particularly human hair, comprising: -15-40% by weight, preferably 20-35% by weight, more preferably 22-33% by weight, of at least one fatty substance, wherein the content of at least one liquid fatty substance is at least 10% by weight, preferably 10-30% by weight, more preferably 12-25% by weight, each percentage by weight based on the total weight of the ready-to-use composition. -Oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, wherein the weight ratio is 20:80 to 80:20, preferably 30:70 to 70:30, more preferably 55:45 to 65:35. - At least one oxidative dye precursor - at least one alkalizing agent, and - At least one oxidizing agent.

[0009] On the other hand, this application provides a multi-compartment kit for oxidative staining of keratin materials, particularly human hair, comprising: The first compartment contains a reagent comprising at least one oxidized dye precursor, at least one aliphatic substance, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, and at least one alkalizing agent; and The second compartment contains a reagent comprising at least one oxidizing agent and optionally, or preferably, at least one fatty substance, said fatty substance being the same as or different from said at least one fatty substance in the first compartment. The total content of the at least one fatty substance is 15-40% by weight, preferably 20-35% by weight, more preferably 22-30% by weight, and the total content of the at least one liquid fatty substance is at least 10% by weight, preferably 10-30% by weight, more preferably 12-25% by weight, with each weight percentage based on the total weight of the reagents in the first and second compartments; and The weight ratio of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate is 20:80 to 80:20, preferably 30:70 to 70:30, and more preferably 55:45 to 65:35.

[0010] On the other hand, this application provides a method for dyeing keratin materials, particularly human hair, using the ready-to-use composition or the multi-compartment kit.

[0011] In addition to the key advantage of rapid staining, the oxidative staining system of the present invention can also achieve long-lasting color retention and give the stained keratin material excellent smoothness and softness. Detailed Implementation

[0012] Those skilled in the art will understand that this discussion is merely a description of exemplary embodiments and is not intended to limit the broader aspects of the invention. Each aspect thus described may be combined with one or more other aspects unless explicitly stated otherwise. In particular, any feature indicated as preferred or advantageous may be combined with one or more other features indicated as preferred or advantageous.

[0013] Unless otherwise specified, the terms “a,” “an,” and “the” used herein include both singular and plural references.

[0014] The terms “comprises” and “including” as used herein are synonymous with “contains” and are inclusive or open-ended, not excluding additional unlisted members, elements or process steps.

[0015] The term “composed of” as used herein is closed-ended, excluding any additional, unlisted, intentionally added members, elements, or process steps.

[0016] The terms “at least one” or “one or more” used in this article to define components refer to the type of component, not the absolute number of molecules.

[0017] In this document, the terms “about”, “approximately”, etc., used with numerical values ​​refer to the value ±10%, preferably ±5%. All numerical values ​​in this document should be interpreted as being modified by the term “about”.

[0018] Unless otherwise specified, the enumeration of numerical endpoints includes all numbers and fractions within the corresponding range, as well as the enumerated endpoints.

[0019] Unless otherwise defined, all terms used in this invention (including technical and scientific terms) have the meanings commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] Keratin materials Keratin materials as used in the context of this application include hair, nails (such as fingernails and / or toenails), wool, fur, and feathers.

[0021] Preferably, the keratin material is understood as human hair and human nails, particularly fingernails and toenails. In particular, the keratin material is understood as human hair.

[0022] dyeing As used in the context of this application, the term "staining of keratin material" or similar expression refers to altering the color of keratin material, and that the color may be lighter or darker than the original color of the keratin material.

[0023] Rapid staining speed The phrase "rapid staining speed" as used in the context of this application means that, in the staining process using the same colorant, the oxidative staining system of the present invention requires less time than other systems to achieve the same staining intensity.

[0024] Ready-to-use compositions In the ready-to-use composition of the present invention, the essential components must include at least one fatty substance, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, at least one oxidizing dye precursor, at least one alkalizing agent and at least one oxidizing agent.

[0025] The ready-to-use composition of the present invention is water-based, meaning it contains water as a key component among other ingredients. Specifically, the water content is 45–70 wt%, preferably 50–65 wt%, for example 46 wt%, 48 wt%, 50 wt%, 52 wt%, 55 wt%, 58 wt%, 60 wt%, 62 wt%, 65 wt%, 68 wt%, 69 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0026] Fatty substances As used in the context of this invention, the term "aliphatic substance" refers to an organic compound that is insoluble in water at room temperature (25 ± 2 °C) and atmospheric pressure (approximately 760 mmHg) and has at least one hydrocarbon chain containing at least six carbon atoms in its structure. The term "insoluble in water" as used herein means a solubility of less than 5%, preferably less than 1%, more preferably less than 0.1%. The aliphatic substance is soluble in organic solvents, such as chloroform and benzene, under the same temperature and pressure conditions.

[0027] A key feature of the ready-to-use composition of the present invention is a high fatty acid content of 15–40 wt%, preferably 20–35 wt%, more preferably 22–33 wt%, for example 16 wt%, 18 wt%, 20 wt%, 22 wt%, 25 wt%, 28 wt%, 30 wt%, 32 wt%, 35 wt%, 38 wt%, 40 wt%, or any range between any two of the above values, the weight percentages being based on the total weight of the ready-to-use composition of the present invention. If the fatty acid content is less than 15 wt%, the dyeing effect and dyeing speed will be adversely affected. If the content is greater than 40 wt%, the system will be too viscous and difficult to handle.

[0028] Another important feature of the ready-to-use composition of the present invention is a high content of liquid fatty substances, at least 10 wt%, preferably 10–30 wt%, more preferably 12–25 wt%, for example 12 wt%, 14 wt%, 16 wt%, 18 wt%, 20 wt%, 22 wt%, 24 wt%, 26 wt%, 28 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition of the present invention. If the content of liquid fatty substances is less than 10 wt%, the dyeing effect and dyeing speed will be adversely affected.

[0029] Various fatty substances can be used in this invention, preferably selected from: - Straight-chain or branched hydrocarbons containing 6 or more carbon atoms, preferably 6-35 carbon atoms, such as liquid paraffin, mineral oil, isoparaffins, petrolatum, liquid petrolatum, polydecene, white oil and mixtures thereof; - Waxes, such as carnauba wax, candelilla wax, Spanish grass wax, paraffin wax, ceresin wax, olive wax, rice bran wax, hydrogenated jojoba wax, beeswax or modified beeswax (cerabellina); polyethylene wax, polyolefin wax and mixtures thereof; - Hydrocarbon oils of animal or plant origin, such as perhydrosqualene, liquid triglycerides of fatty acids containing 6 to 30 carbon atoms, such as heptanoic acid or caprylic acid triglycerides, caprylic / capric acid triglycerides, such as sunflower seed oil, corn oil, soybean oil, bone marrow oil, grape seed oil, sesame oil, hazelnut oil, almond oil, macadamia nut oil, argan oil, castor oil, avocado oil, jojoba oil, shea butter, and mixtures thereof; - Non-oxygenated, saturated or unsaturated, straight-chain or branched fatty alcohols containing 6 to 30 carbon atoms, such as 8 to 30 carbon atoms; for example, cetyl alcohol, stearyl alcohol, cetearyl alcohol, arachidyl alcohol, betaine alcohol, octyldodecyl alcohol, 2-butyloctyl alcohol, 2-hexyldecyl alcohol, 2-undecylpentadecanol, oleyl alcohol or linoleyl alcohol and mixtures thereof; -Saturated or unsaturated, straight-chain or branched C1-C 26 Aliphatic monocarboxylic or polycarboxylic acids, or inorganic monocarboxylic or polycarboxylic acids (e.g., sulfuric acid, phosphoric acid), with saturated or unsaturated, straight-chain or branched C1-C bonds. 26 An ester formed from an aliphatic monohydric alcohol or polyhydric alcohol, wherein the total number of carbon atoms in the ester is preferably greater than or equal to 10; Examples include monoesters such as betaine dihydroabietic acid ester; octyldodecanoate betaine; isocetyl betaine; cetyl lactate; and C12 lactate. 12 -C 15Alkyl esters; Isostearyl lactate; Lauryl lactate; Linoleyl lactate; Oleyl lactate; Isostearyl caprylate; Isocetyl caprylate; Octyl caprylate; Cetyl caprylate; Decanyl oleate; Isocetyl isostearate; Isocetyl laurate; Isocetyl stearate; Isocetyl caprylate; Isocetyl caprylate; Isocetyl oleate; Isononyl isononanoate; Isostearyl palmitate; Methyl acetyl castor oil; Myristyl stearate; Octyl isononanoate; 2-Ethylhexyl isononanoate; Octyl palmitate Alcohol esters; Octyl nonanoate; Octyl stearate; Octyl dodecyl erucate; Oleyl erucate; Ethyl palmitate and isopropyl palmitate, 2-ethylhexyl palmitate, 2-octyl decyl palmitate, alkyl myristate esters such as isopropyl myristate, butyl myristate, cetyl myristate, 2-octyl dodecyl myristate, myristyl myristate or stearyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; Dioctyl malate, hexyl laurate, 2-hexyl decyl laurate; Diesters or polyesters, such as diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearate adipate; dioctyl maleate; glyceryl undecenoate; octyl dodecyl stearoyl stearate; pentaerythritol monoricinoleate; pentaerythritol tetraisononoate; pentaerythritol tetranonoate; pentaerythritol tetraisostearate; pentaerythritol tetraoctanoate; propylene glycol dioctanoate; propylene glycol didecanoate; tridecyl erucate; triisopropyl citrate; triisostearate citrate; trilactyl triglyceride; trioctyl dodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl diheptanoate. Composed of monosaccharides, oligosaccharides, or polysaccharides with straight-chain or branched, saturated or unsaturated C6 to C6 bonds. 30 And C is preferred 12 To C 22 The sugar esters formed from fatty acids, examples of suitable sugars include sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, and lactose, and the esters can be, for example, oleate, laurate, palmitate, myristate, betaine, cocoate, stearate, linoleate, linolenic acid ester, decanoate, arachidonic acid ester, or mixtures thereof, such as, in particular, a mixture of oleic palmitate, oleic stearate, and palmitic stearate.

[0030] Advantageously, the fatty substances that can be used in this invention do not include (poly)oxyalkylene compounds, (poly)glycerol compounds, organosilicones containing a -Si-O- backbone, and silanes.

[0031] The fatty substances used in this invention can be in solid or liquid form at room temperature and atmospheric pressure. Preferably, the fatty substances include one or more solid fatty substances and one or more liquid fatty substances.

[0032] In a preferred embodiment, the solid fatty substance is selected from cetyl alcohol, stearyl alcohol, cetearyl alcohol, arachidyl alcohol, betaine alcohol, cetyl palmitate, or mixtures thereof.

[0033] In a preferred embodiment, the liquid fatty substance is selected from liquid paraffin, mineral oil, isoparaffin, liquid petrolatum, polydecene, white oil, lactic acid oleyl alcohol ester; ethyl palmitate, isopropyl palmitate, 2-ethylhexyl palmitate, isopropyl myristate, butyl myristate, hexyl stearate, butyl stearate, isobutyl stearate, hexyl laurate, caprylic / capric triglyceride, decyl oleate, octyl dodecyl alcohol, hydrogenated polyisobutylene, pentaerythritol tetraethylhexanoate, isononyl isononanoate, pentaerythritol tetraisostearate, oleic acid, or mixtures thereof.

[0034] Oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate Another important feature of the ready-to-use composition of the present invention is that it must contain oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, preferably in a weight ratio of 20:80 to 80:20, more preferably 30:70 to 70:30, more preferably 55:45 to 65:35, and particularly about 60:about 40.

[0035] Oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate typically act as emulsifiers in oxidative staining systems. However, the inventors have surprisingly discovered that the presence of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate in conjunction with high-fat content significantly shortens staining time and achieves the desired staining intensity. Unbound by any existing theories, the inventors hypothesize that oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate in conjunction with high-fat content may contribute to accelerating the absorption of colorants by keratin materials during oxidative staining.

[0036] Of particular surprise was the discovery that not all phosphate esters achieved the same dyeing speed as oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate. As shown in the examples, other phosphate ester emulsifiers could not achieve the same dyeing speed as oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, demonstrating the special effects of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate.

[0037] The total content of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate may be 0.5–8 wt%, preferably 1–6 wt%, more preferably 1.5–5 wt%, for example 0.8 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 5.0 wt%, 5.5 wt%, 6.0 wt%, 6.5 wt%, 7.0 wt%, 7.5 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0038] The mixture of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate that can be used in this invention is available from commercially available products, such as Crodafos HCE-LQ-(MH) purchased from Croda (the mass ratio of oleyl alcohol polyether-5 phosphate to dioleyl alcohol phosphate is about 60:40).

[0039] Oxidized dye precursor There are no particular limitations on the oxidative dye precursors that can be used in this invention; those that are conventionally used can be used. Oxidative dye precursors can be divided into so-called oxidizing bases and color-forming agents.

[0040] The ready-to-use composition of the present invention comprises at least one oxidizing base and may further comprise at least one coloring agent. Preferably, the ready-to-use composition comprises at least one oxidizing base and at least one coloring agent.

[0041] For example, the oxidizing base may be selected from, but is not limited to: -4,5-Diaminopyrazoles, such as 4,5-diaminopyrazole, 4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(2-hydroxyethyl)pyrazole (DHEpyrazole), 4,5-diamino-1-(4'-chlorobenzyl)pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazylpyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-1-methylpyrazole, 4,5- Diamino-1-tert-butyl-3-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)-3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole and 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, and their addition salts; -Phenylenediamine derivatives, such as p-phenylenediamine, p-toluenediamine, 2-β-hydroxyethyl-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, 2-γ-hydroxypropyl-p-phenylenediamine, 2-chloro-p-phenylenediamine, 2,3-dimethyl-p-phenylenediamine, 2,6-dimethyl-p-phenylenediamine, 2,6-diethyl-p-phenylenediamine, 2,5-dimethyl-p-phenylenediamine, N,N-dimethyl-p-phenylenediamine, N,N-diethyl-p-phenylenediamine, N,N-dipropyl-p-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, 4-N,N-bis(β-hydroxyethyl)amino-2-methylaniline, N,N-bis(β-hydroxyethyl)-p-phenylenediamine, 4-N N-bis(β-hydroxyethyl)amino-2-chloroaniline, 2-fluoro-p-phenylenediamine, 2-isopropyl-p-phenylenediamine, N-(β-hydroxypropyl)-p-phenylenediamine, 2-hydroxymethyl-p-phenylenediamine, N,N-dimethyl-3-methyl-p-phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-p-phenylenediamine, N-(β,γ-dihydroxypropyl)-p-phenylenediamine, N-(4'-aminophenyl)-p-phenylenediamine, N-phenyl-p-phenylenediamine, 2-β-hydroxyethyloxy-p-phenylenediamine, 2-β-acetaminoethyloxy-p-phenylenediamine, N-(β-methoxyethyl)-p-phenylenediamine and 2-methyl-1-N-β-hydroxyethyl-p-phenylenediamine, and their addition salts; - Dibasic compounds, such as N,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(β-hydroxyethyl)-N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(4-methylaminophenyl)tetramethylenediamine, N,N'-bis(ethyl)-N,N'-bis(4'-amino-3'-methylphenyl)ethylenediamine and 1,8-bis(2,5-diaminophenoxy)-3,5-dioxane, and their addition salts; - p-Aminophenols, such as p-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol and 4-amino-2-(β-hydroxyethylaminomethyl)phenol, and their addition salts; -O-aminophenols, such as 2-aminophenol, 2-amino-1-hydroxy-5-methylbenzene, 2-amino-1-hydroxy-6-methylbenzene and 5-acetamido-2-aminophenol, and their addition salts; -Pyridine derivatives, such as 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine, 2,3-diamino-6-methoxypyridine, 2-(β-methoxyethyl)amino-3-amino-6-methoxypyridine and 3,4-diaminopyridine, and their addition salts; -Pyrimidine derivatives, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine, and their addition salts; -Pyrazolopyrimidine derivatives, such as pyrazolo[1,5-a]pyrimidine-3,7-diamine; 2,5-dimethylpyrazolo[1,5-a]pyrimidine-3,7-diamine; pyrazolo[1,5-a]pyrimidine-3,5-diamine; 2,7-dimethylpyrazolo[1,5-a]pyrimidine-3,5-diamine; 3-aminopyrazolo[1,5-a]pyrimidine-7-ol; 3-aminopyrazolo[1,5-a]pyrimidine-5-ol; 2-(3-aminopyrazolo[1,5-a]pyrimidine-7-ylamino)ethanol; 2-(7-aminopyrazolo[1,5-a]pyrimidine-3-ylamino) Ethanol; 2-[(3-aminopyrazolo[1,5-a]pyrimidin-7-yl)(2-hydroxyethyl)amino]ethanol; 2-[(7-aminopyrazolo[1,5-a]pyrimidin-3-yl)(2-hydroxyethyl)amino]ethanol; 5,6-dimethylpyrazolo[1,5-a]pyrimidin-3,7-diamine; 2,6-dimethylpyrazolo[1,5-a]pyrimidin-3,7-diamine; 2,5,N7,N7-tetramethylpyrazolo[1,5-a]pyrimidin-3,7-diamine; 3-amino-5-methyl-7-imidazolylpropylaminopyrazolo[1,5-a]pyrimidine; and their addition salts; -Pyrazolones, such as diamino-N,N-dihydropyrazolopyrazolone, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-isopropyl ...ol[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazol[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazol[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazol[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyraz [2-a]pyrazol-1-one, 2-amino-3-(pyrrolid-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-di-dihydropyrazol-3-one, 4,5-diamino-1,2-di-(2-hydroxyethyl)- 1,2-Dihydropyrazole-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazole[1,2-a]pyrazole-1-one, 2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazole[1,2-a]pyrazole-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazin[1,2-a] Pyrazol-1-one, 4-amino-1,2-diethyl-5-(pyrrolidone-1-yl)-1,2-dihydropyrrolidone-3-one, 4-amino-5-(3-dimethylaminopyrrolidone-1-yl)-1,2-diethyl-1,2-dihydropyrrolidone-3-one and 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrrolidone, and their addition salts.

[0042] The addition salts that can be used in the context of this application are preferably acid addition salts, such as those selected from hydrochloride, hydrobromide, sulfate, citrate, succinate, tartrate, lactate, acetate, alkyl sulfate and alkyl sulfonate.

[0043] The ready-to-use composition of the present invention may contain an oxidizing base in an amount of 0.01–5 wt%, preferably 0.02–3 wt%, more preferably 0.5–2.5 wt%, even more preferably 0.5–2 wt%, and most preferably 0.6–1.5 wt%; for example, 0.03 wt%, 0.05 wt%, 0.08 wt%, 0.1 wt%, 0.2 wt%, 0.4 wt%, 0.6 wt%, 0.8 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 4.8 wt%, or any range between any two of the above values, wherein the weight percentage is based on the total weight of the ready-to-use composition.

[0044] Further or optionally, in order to adjust the hue, at least one colorant may be used in this application, and those conventionally used in oxidative dyeing compositions may be used, such as m-aminophenol, m-phenylenediamine, m-diphenol, naphthol, and heterocyclic colorants, such as indole derivatives, dihydroindole derivatives, sesamol and its derivatives, pyridine derivatives, pyrazolotriazole derivatives, pyrazolone, indazole, benzimidazole, benzothiazole, benzoxazole, 1,3-benzodioxane, quinoline, and benzomorpholine, and their addition salts (preferably acid addition salts).

[0045] Specific examples of colorants include, for example, 2,4-diaminophenoxyethanol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 5-amino-4-chloro-2-methylphenol, 5-(2-hydroxyethyl)-amino-2-methylphenol, 2,4-dichloro-3-aminophenol, 2-aminophenol, 2,6-bis-(2'-hydroxyethylamino)-1-methylbenzene, 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, 3-amino-4-(2-methoxyethoxy)-5-methylaniline, 1-amino-3-bis-(2-hydroxyethyl)aminobenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, 2-methyl-5-aminophenol ("p-amino-o-cresol," i.e., 4-amino-2-hydroxytoluene), 2-amino-5-ethylphenol, 5-N-(β-hydroxyethyl)amino-2-methylphenol, 3-aminophenol (m-aminophenol), 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene (2-amino-4-hydroxyethylaminobenzene) ether), 1,3-dihydroxybenzene (resorcinol), 1,3-dihydroxy-2-methylbenzene (2-methylresorcinol), 4-chloro-1,3-dihydroxybenzene, 1-naphthol, 1,5-dihydroxynaphthol, 2,7-dihydroxynaphthol, 1,7-dihydroxynaphthol, 1,8-dihydroxynaphthol, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 2-(1,3-benzodioxane-5-ylamino)ethanol, sesamol, 1-amino-2-methoxy-4,5-methylenedioxybenzene, α-naphthol, 6-hydroxyindole, 4-hydroxyindole, 7-hydroxyindole, 4-hydroxy-N-methylindole, 4- Hydroxydihydroindole, 6-hydroxydihydroindole, 7-hydroxydihydroindole, 2,6-dihydroxy-4-methylpyridine, 3-amino-2-methylamino-6-methoxypyridine, 2,6-dihydroxy-3,4-dimethylpyridine, 3,5-diamino-2,6-dimethoxypyridine, 1H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2-amino-3-hydroxypyridine, 3,6-dimethylpyrazolo[3,2-c]-1,2,4-triazole, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole and 6-hydroxybenzomorpholine, and their addition salts (preferably acid addition salts).

[0046] The ready-to-use composition of the present invention may contain a colorant in the amount of 0.01–5 wt%, preferably 0.02–3 wt%, more preferably 0.05–2.5 wt%, even more preferably 0.1–2 wt%, and most preferably 0.2–1 wt%; for example, 0.03 wt%, 0.05 wt%, 0.08 wt%, 0.1 wt%, 0.2 wt%, 0.4 wt%, 0.6 wt%, 0.8 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 4.8 wt%, or any range between any two of the above values, wherein the weight percentage is based on the total weight of the ready-to-use composition.

[0047] The total content of the oxidative dye precursor containing the oxidizing base and the colorant in the ready-to-use composition of the present invention may be 0.01–8 wt%, preferably 0.1–5 wt%, more preferably 1–3 wt%; for example, 0.05 wt%, 0.2 wt%, 0.3 wt%, 0.5 wt%, 0.8 wt%, 1.0 wt%, 1.2 wt%, 1.5 wt%, 1.8 wt%, 2.0 wt%, 2.3 wt%, 2.5 wt%, 2.8 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 5.0 wt%, 5.5 wt%, 6.0 wt%, 6.5 wt%, 7.0 wt%, 7.5 wt%, 8.0 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0048] Optionally, the ready-to-use compositions of the present invention may further comprise at least one direct dye, such as nitrobenzene dyes, azo direct dyes, methine direct dyes, and their addition salts; and / or one or more pigments. These direct dyes may be nonionic, anionic, or cationic.

[0049] Alkalizing agent The ready-to-use compositions of the present invention should have a pH value in the range of 7.0 to 11.5, preferably 8.0 to 11.0, more preferably 8.5 to 10.5, and particularly preferably 9.0 to 10.0, all of which are measured at 20°C. At these pH values, the outer layer of keratin fibers can be optimally opened to absorb oxidized dye precursors, and the desired effect of the peroxide compound, namely, destroying the natural melanin of keratin fibers and catalyzing the reaction between dye precursors, can be optimally achieved. Therefore, the ready-to-use compositions of the present invention contain at least one alkalizing agent.

[0050] Examples of the at least one alkalizing agent include ammonia; alkali metal carbonates and bicarbonates, such as sodium carbonate and sodium bicarbonate, and potassium carbonate and potassium bicarbonate; alkanolamines, such as monoethanolamine, diethanolamine and triethanolamine and their derivatives, such as 2-amino-2-methyl-1-propanol; oxyethyleneized and oxypropyleneized hydroxyalkylamines and ethylenediamine; sodium hydroxide; potassium hydroxide.

[0051] The amount of the at least one alkalizing agent should be sufficient to obtain the pH range described above, i.e., 7–11.5. Typically, the content of the at least one alkalizing agent can be from 0.05 wt% to 20 wt%, preferably 2–15 wt%, more preferably 3–12 wt%; for example, 0.5 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 5.0 wt%, 5.5 wt%, 6.0 wt%, 6.5 wt%, 7.0 wt%, 7.5 wt%, 8.0 wt%, 8.5 wt%, 9.0 wt%, 9.5 wt%, 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0052] Oxidizing agent To oxidize the oxidized dye precursor, the ready-to-use composition must contain at least one oxidizing agent. There are no particular limitations on the at least one oxidizing agent, and those conventionally used in oxidative dyeing systems can be used in the compositions of the present invention. Examples may include peroxides such as hydrogen peroxide and urea peroxide, alkali metal bromates and ferricyanides. Preferably, the oxidizing agent is hydrogen peroxide, particularly an aqueous solution of hydrogen peroxide.

[0053] The content of oxidant in the ready-to-use composition of the present invention is not particularly limited, as long as it can fully oxidize the oxidized dye precursor to produce color. Typically, the content of the at least one oxidant can be from 0.1 wt% to 20 wt%, preferably from 0.5 wt% to 10 wt%, for example 0.2 wt%, 0.4 wt%, 0.8 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 5.0 wt%, 5.5 wt%, 6.0 wt%, 6.5 wt%, 7.0 wt%, 7.5 wt%, 8.0 wt%, 8.5 wt%, 9.0 wt%, 9.5 wt%, 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0054] surfactants To achieve better emulsification and / or better rinseability of each component, the ready-to-use compositions of the present invention may also contain surfactants selected from zwitterionic surfactants, anionic surfactants, nonionic surfactants, cationic surfactants, and mixtures thereof.

[0055] zwitterionic surfactants The term "amphoteric surfactant" should be understood as a class of surfactants that simultaneously carry positive and negative charges, and whose charges neutralize each other under normal conditions.

[0056] Exemplary useful zwitterionic surfactants include, but are not limited to, those of the following formulas (Ia-Id): (Ia) (Ib) (Ic) (Id) Where R 10 It is an alkyl group having 8-18 carbon atoms; n is an integer from 1 to 3.

[0057] Particularly useful amphoteric surfactants include, for example, cocamidopropyl betaine, cocamidopropyl betaine, lauryl betaine, lauryl hydroxysulfonyl betaine, lauryl dimethyl betaine, cocamidopropyl hydroxysulfonyl betaine, betaine, capryloyl / decanoyl aminopropyl betaine, lauryl hydroxysulfonyl betaine, stearyl betaine, or mixtures thereof. Typically, at least one amphoteric surfactant is selected from cocamidopropyl betaine, cocamidopropyl betaine, betaine, capryloyl / decanoyl aminopropyl betaine, and lauryl betaine, or mixtures thereof.

[0058] If present, the content of the zwitterionic surfactant may be from 0.05 wt% to 5 wt%, preferably 0.1–4 wt%, more preferably 0.2–2 wt%, for example 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2.0 wt%, 2.4 wt%, 2.6 wt%, 2.8 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0059] Anionic surfactants The term "anionic surfactant" should be understood as a class of surfactants that contain only anionic groups as ions or ionizable groups. The anionic groups are preferably selected from: -COOH, -COO. - -SO3H, -SO3 - -OSO3H, -OSO3 - -H2PO3, -HPO3 - -PO3 2- -H2PO2, -HPO2 - -PO2 2- -POH and -PO - .

[0060] Examples of anionic surfactants that may be used in this invention may include alkyl sulfate salts, alkyl ether sulfate salts, alkyl amide ether sulfate salts, alkyl aryl polyether sulfate salts, monoglyceride sulfate salts, alkyl sulfonates, alkyl amide sulfonates, alkyl aryl sulfonates, α-olefin sulfonates, olefin sulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl amide sulfosuccinates, alkyl sulfoacetates, acyl sarcosinate salts, acyl glutamate salts, alkyl sulfosuccinates, acyl hydroxyethyl sulfonates, and N-(C1-C4)alkyl N-acyl taurates, alkyl monoester salts of polyglycoside-polycarboxylic acids, acyl lactates, D-galactoside uronic acid salts, alkyl ether carboxylates, alkyl aryl ether carboxylates, alkyl amide ether carboxylates; and the corresponding unsalted forms of all these compounds; the alkyl and acyl groups of all these compounds (unless otherwise stated) generally contain 8 to 24 carbon atoms, and the aryl group generally represents phenyl. These compounds can be oxyethylated, in which case they preferably contain 1 to 50 oxyethylated units, more preferably 5 to 10 oxyethylated units. The alkyl or acyl groups of all these compounds can be saturated or unsaturated.

[0061] When anionic surfactants are present in salt form, they can be selected from alkali metal salts such as sodium or potassium salts (preferably sodium salts), ammonium salts, amine salts, and especially amino alkoxides, or alkaline earth metal salts such as magnesium salts. Alkali metal or alkaline earth metal salts, especially sodium or magnesium salts, are preferred.

[0062] Examples of amino alkoxides that may be mentioned include, in particular, monoethanolamine salts, diethanolamine salts, triethanolamine salts, monoisopropanolamine salts, diisopropanolamine salts, triisopropanolamine salts, 2-amino-2-methyl-1-propanol salts, 2-amino-2-methyl-1,3-propanediol salts and tris(hydroxymethyl)aminomethane salts.

[0063] In a preferred embodiment, the anionic surfactant is selected from (C 10 -C 20 )alkyl ether sulfates, especially sodium lauryl ether-2 sulfate, (C 10 -C 20 )alkyl ether phosphate salts, (C 10 -C 20 )alkyl ether carboxylates, (C 10 -C 20 )alkyl sulfonates, (C 10 -C 20 Alkylbenzene sulfonates or mixtures thereof.

[0064] If present, the content of the anionic surfactant may be from 0.05 wt% to 5 wt%, preferably 0.1–4 wt%, more preferably 0.2–2 wt%, for example 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2.0 wt%, 2.4 wt%, 2.6 wt%, 2.8 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0065] Nonionic surfactants The term "nonionic surfactant" should be understood as a class of surfactants that are composed of hydrophilic head groups and hydrophobic tail chains and are uncharged.

[0066] Examples of nonionic surfactants that may be mentioned include the following compounds, alone or in mixtures: -Oxyalkylene-containing (C8-C) 24 Alkylphenols; -Saturated or unsaturated, straight or branched, oxoalkylated or glycerolized C8-C 40 Alcohols, preferably containing one or two fatty chains; -Saturated or unsaturated, straight-chain or branched, oxoalkylated C8 to C8 30 Fatty acid amides; -Saturated or unsaturated, straight-chain or branched C8 to C 30 Esters of acids and polyethylene glycol; -Saturated or unsaturated, straight-chain or branched C8 to C 30 Esters of carboxylic acids with sorbitol or glycerol, preferably oxyethylated; -Esters of fatty acids and sucrose; -C8-C of sorbitol dehydrate 30 Fatty acid esters; -(C8-C 30 )alkyl(poly)glucoside, (C8-C 30 Alkenyl (poly)glucosides, optionally oxyalkylated (0 to 10 oxyalkylene units) and comprising 1 to 15 glucose units, (C8-C 30 alkyl (poly)glucoside esters; - Saturated or unsaturated oxyethylated vegetable oils; - A condensate of ethylene oxide and / or propylene oxide; -N-(C8-C 30 )alkylglucosamine and N-(C8-C 30 Acylmethylglucosamine derivatives; -Amine oxides.

[0067] Nonionic surfactants are particularly selected from alcohols, α-diols, and (C1-C2)-diols. 20 Alkylphenols, these compounds are ethoxylated, propoxylated or glycerolized, and have at least one aliphatic chain containing, for example, 8 to 24 carbon atoms, preferably 8 to 18 carbon atoms, the number of oxoethylidene or oxopropylidene units is particularly 1 to 200, and the number of glycerol groups is particularly 1 to 30.

[0068] Also mentioned are condensates of ethylene oxide and propylene oxide with fatty alcohols, preferably ethoxylated fatty amides containing 1 to 30 oxyethylidene units, polyglycerolized fatty amides containing an average of 1 to 5, and particularly 1.5 to 4, glycerol groups, ethoxylated fatty acid esters of dehydrated sorbitol containing 1 to 30 oxyethylidene units, fatty acid esters of sucrose, fatty acid esters of polyethylene glycol, (C6-C... 24 Alkyl) polyglycosides, oxyethylated vegetable oils, N-(C6-C) 24 Alkyl)glucosamine derivatives, amine oxides such as (C 10 -C 14 Alkylamine oxides or N-(C) 10 -C 14 Acyl)aminopropylmorpholine oxide.

[0069] C8-C of dehydrated sorbitol 30 (Preferred option C) 12 -C 22 Fatty acid esters (especially monoesters, diesters, and triesters) may be selected from: sorbitan caprylate; sorbitan cocoate; sorbitan isostearate; sorbitan laurylate; sorbitan oleate; sorbitan palmitate; sorbitan stearate; sorbitan diisostearate; sorbitan dioleate; sorbitan distearate; sorbitan sesquicaprate; sorbitan sesquiisostearate; sorbitan sesquioleate; sorbitan sesquistearate; sorbitan triisostearate; sorbitan trioleate; sorbitan tristearate.

[0070] Polyoxyethylene C8-C of dehydrated sorbitol 30 (Preferred option C) 12 -C 18 Fatty acid esters (especially monoesters, diesters, and trimers), particularly those containing 2 to 20 moles of oxyethylidene, can be selected from C. 12 -C 18Polyoxyethylene esters of fatty acids (especially lauric acid, myristic acid, cetyl acid, or stearic acid) with sorbitol, particularly those containing 2 to 30 moles of oxyethylidene, such as: polyoxyethylene sorbitol monolaurate (4 EO) (polysorbate-21), polyoxyethylene sorbitol monolaurate (20 EO) (polysorbate-20), polyoxyethylene sorbitol monopalmitate (20 EO) (polysorbate-40), polyoxyethylene sorbitol monostearate (20 EO) (polysorbate-60), polyoxyethylene sorbitol monostearate (4 EO) (polysorbate-61), polyoxyethylene sorbitol monooleate (20 EO) (polysorbate-80), polyoxyethylene sorbitol monooleate (5 EO) (5 EO), and polyoxyethylene sorbitol monooleate (5 EO). EO (polysorbate-81), polyoxyethylene sorbitan tristearate (20 EO) (polysorbate-65), polyoxyethylene sorbitan trioleate (20 EO) (polysorbate-85).

[0071] Polyoxyethylene C8-C of dehydrated sorbitol 30 (Preferred option C) 12 -C 18 Fatty acid esters (especially monoesters, diesters, trimers, and tetraesters), particularly those containing 2 to 20 moles of oxyethylidene, can be selected from C. 12 -C 18 Polyoxyethylene esters of fatty acids (especially lauric acid, myristic acid, cetyl acid, or stearic acid) with dehydrated sorbitol, particularly those containing 2 to 20 moles of oxyethylidene, for example: - 20 EO polyoxyethylene ester of sorbitol and coconut acid (PEG-20 sorbitol cocoate); - Polyoxyethylene esters of sorbitol and isostearic acid (especially those containing 2 to 20 EO) (such as PEG-2 sorbitol isostearate; PEG-5 sorbitol isostearate; PEG-20 sorbitol isostearate). - Polyoxyethylene esters of sorbitol and lauric acid (especially those containing 2 to 20 EO) (such as PEG-10 sorbitol laurate). - Polyoxyethylene esters containing 10 oxyethylides of sorbitol and oleic acid (especially those containing 2 to 20 EO) (such as PEG-6 sorbitol oleate; PEG-20 sorbitol oleate). - Polyoxyethylene esters of sorbitol and stearic acid (especially those containing 3 to 20 EO) (such as PEG-3 sorbitol stearate; PEG-4 sorbitol stearate; PEG-6 sorbitol stearate).

[0072] Nonionic surfactants are preferably selected from ethoxylated C8-C groups containing 1 to 200 oxyethylidene groups. 24 (ethoxylated) C8-C of fatty alcohols, glycerol, or sorbitol 30 Fatty acid esters and mixtures thereof.

[0073] More preferably, the nonionic surfactant is selected from ethoxylated C8-C containing 1 to 200 oxyethylidene groups (preferably 1 to 100 oxyethylidene groups, more preferably 1 to 50 oxyethylidene groups). 24Fatty alcohols, specific examples thereof include Ceteareth-2, CETEARETH-3, CETEARETH-4, CETEARETH-5, CETEARETH-6, CETEARETH-7, CETEARETH-8, CETEARETH-9, CETEARETH-10, CETEARETH-11, CETEARETH-12, CETEARETH-13, CETEARETH-14, CETEARETH-15, CETEARETH-16, CETEARETH-17, CETEARETH-18, CETEARETH-20, CETEARETH-22, CETEARETH-23, CETEARETH-24, CETEARETH-25, CETEARETH-27, CETEARETH-28, CETEARETH-29, CETEARETH-30, CETEARETH-33, CETEARETH-34, CETEARETH-40, CETEARETH-50, CETEARETH-55, CETEARETH-60, CETEARETH-80, CETEARETH-100, Ceteth-1, CETETH-2, CETETH-3, CETETH-4, CETETH-5, CETETH-6, CETETH-7, CETETH-10, CETETH-12, CETETH-13, CETETH-14, CETETH-15, CETETH-16, CETETH-17, CETETH-18, CETETH-20, CETETH-23, CETETH-24, CETETH-25, CETETH-30, CETETH-40, CETETH-45, CETETH-150, Cetoleth-2, CETOLETH-4, CETOLETH-5, CETOLETH-6, CETOLETH-10, CETOLETH-11, CETOLETH-15, CETOLETH-18, CETOLETH-20, CETOLETH-22, CETOLETH-24, CETOLETH-25, CETOLETH-30, Isoceteth-5, ISOCETETH-7, ISOCETETH-10, ISOCETETH-12, ISOCETETH-15, ISOCETETH-20, ISOCETETH-25, ISOCETETH-30, Isolaureth-3, ISOLAURETH-6,ISOLAURETH-10, ISOSTEARETH-2, ISOSTEARETH-3, ISOSTEARETH-5, ISOSTEARETH-8, ISOSTEARETH-10, ISOSTEARETH-12, ISOSTEARETH-15, ISOSTEARETH-16, ISOSTEARETH-20, ISOSTEARETH-22, ISOSTEARETH-25, ISOSTEARETH-50, LAURETH-1, LAURETH-2, LAURETH-3, LAURETH-4, LAURETH-5, LAURETH-6, LAURETH-7, LAURETH-8, LAURETH-9, LAURETH-10, LAURETH-11, LAURETH-12, LAURETH-13, LAURETH-14, LAURETH-15, LAURETH-16, LAURETH-20, LAURETH-21, LAURETH-23, LAURETH-25, LAURETH-30, LAURETH-38, LAURETH-40, LAURETH-50, MYRETH-2, MYRETH-3, MYRETH-4, MYRETH-5, MYRETH-10, STEARETH-2, STEARETH-3, STEARETH-4, STEARETH-5, STEARETH-6, STEARETH-7, STEARETH-8, STEARETH-10, STEARETH-11, STEARETH-13, STEARETH-14, STEARETH-15, STEARETH-16, STEARETH-20, STEARETH-21, STEARETH-25, STEARETH-27, STEARETH-30, STEARETH-40, STEARETH-50, STEARETH-80, STEARETH-100.

[0074] If present, the content of the nonionic surfactant may be from 0.05 wt% to 5 wt%, preferably 0.1–4 wt%, more preferably 0.2–2 wt%, for example 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2.0 wt%, 2.4 wt%, 2.6 wt%, 2.8 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0075] cationic surfactants The term "cationic surfactant" should be understood as a class of surfactants that contain only a positively charged head group and a hydrophobic tail.

[0076] The cationic surfactants that can be used in the compositions of the present invention are typically selected from primary, secondary or tertiary fatty amines, quaternary ammonium salts, and mixtures thereof that have been optionally polyoxyalkylated.

[0077] The fatty amine typically contains at least one C8-C. 30 Hydrocarbon chain. Among the aliphatic amines that can be used according to the invention, examples include stearamide propyl dimethylamine and distearate.

[0078] Examples of cationic surfactants that can be used in this invention may include: -At least one cationic surfactant of formula (I), (I) in R 12 R 13 R 14 Independently representing C1-C6 alkyl, C2-C6 alkenyl, or C2-C6 hydroxyalkyl, such as methyl, ethyl, propyl, butyl, preferably methyl. R 15 Indicates C8-C 28 Alkyl, such as C 10 C 11 C 12 C 13 C 14 C 15 C 16 C 17 C 18 C 19 C 20 C21 C 22 C 23 C 24 C 25 C 26 C 27 Alkyl groups, and X - This refers to physiologically compatible anions, such as halogen anions, acetate, citrate, lactate, glycolate, sulfate, and phosphate, with halogen anions, such as Cl, being preferred. - ,Br - ; -At least one cationic surfactant of formula (II), (II), in R 16 Indicates C1-C6 alkyl, R 17 R 18 Independently for C7-C 27 Alkyl, preferably C 10 -C 22 Alkyl groups, and X - This refers to physiologically compatible anions. -At least one cationic surfactant of formula (III), (III) in R 19 R 20 Independently representing C1-C6 alkyl, C2-C6 alkenyl, or C2-C6 hydroxyalkyl, R 21 R 22 Independently for C7-C 27 Alkyl, preferably C 10 -C 22 Alkyl groups, and X - This refers to physiologically compatible anions.

[0079] If present, the cationic surfactant may be included in the ready-to-use composition of the present invention in amounts conventional in the art, such as 0.05 wt% to 5 wt%, like 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1.0 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2.0 wt%, 2.4 wt%, 2.6 wt%, 2.8 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or any range between any two of the above values, the weight percentage being based on the total weight of the ready-to-use composition.

[0080] Chelating agents The ready-to-use compositions according to the invention may optionally contain one or more chelating agents (or chelating reagents).

[0081] The definition of a "chelating agent" (or "chelating reagent") is well known to those skilled in the art, referring to a compound or mixture of compounds capable of forming a chelate with a metal ion. A chelate is an inorganic complex in which the chelating agent (or chelating reagent) coordinates with a metal ion, that is, it forms one or more bonds with the metal ion (forming a ring containing the metal ion).

[0082] Chelating agents (or chelating reagents) typically contain at least two electron-donating atoms that are capable of forming bonds with metal ions.

[0083] In the context of this invention, the chelating agent may be selected from carboxylic acids (preferably aminocarboxylic acids), phosphonic acids (preferably aminophosphonic acids), polyphosphoric acids (preferably linear polyphosphoric acids), their salts, and derivatives thereof. The salts are particularly alkali metal salts, alkaline earth metal salts, ammonium salts, and substituted ammonium salts.

[0084] Examples of carboxylic acid-based chelating agents include the following compounds: diethylenetriaminepentaacetic acid (DTPA), ethylenediaminedisuccinic acid (EDDS) and trisodium ethylenediaminedisuccinate, ethylenediaminetetraacetic acid (EDTA) and its salts such as disodium EDTA, tetrasodium EDTA, ethylenediamine-N,N'-diglutarate (EDDG), glycine-N,N'-disuccinic acid (GADS), 2-hydroxypropyldiamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N,N'-bis(o-hydroxyphenylacetic acid) (EDDHA), and N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid. (HBED), N-diazotriacetic acid (NTA), methylglycine diacetic acid (MGDA), N-2-hydroxyethyl-N,N-diacetic acid and glyceryl iminodiacetic acid, iminodiacetic acid-N-2-hydroxypropylsulfonic acid and aspartic acid-N-carboxymethyl-N-2-hydroxypropyl-3-sulfonic acid, β-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid, aspartic acid-N-monoacetic acid, iminodisuccinic acid (IDSA)-based chelating agents, ethanol diglycine, phosphonobutane tricarboxylic acid, and N,N-dicarboxymethyl glutamic acid and its salts such as tetrasodium glutamate diacetate (GLDA).

[0085] Examples of chelating agents based on mono- or polyphosphonic acids include the following compounds: diethylenetriaminepenta (methylenephosphonic acid) (DTPMP), ethane-1-hydroxy-1,1,2-triphosphonic acid (E1 HTP), ethane-2-hydroxy-1,1,2-triphosphonic acid (E2HTP), ethane-1-hydroxy-1,1-diphosphonic acid (EHDP), ethane-1,1,2-triphosphonic acid (ETP), ethylenediaminetetramethylenephosphonic acid (EDTMP), hydroxyethane-1,1-diphosphonic acid (HEDP, or etidronic acid), and their salts such as disodium etidronate and tetrasodium etidronate.

[0086] Examples of chelating agents based on polyphosphates include the following compounds: sodium tripolyphosphate (STP), tetrasodium pyrophosphate, hexametaphosphate, sodium metaphosphate, and phytic acid.

[0087] According to the present invention, the chelating agent is preferably selected from diethylenetriaminepentaacetic acid (DTPA) and its salts, ethylenediaminetetraacetic acid (EDTA) and its salts, ethylenediaminedisuccinic acid (EDDS) and its salts, etidronic acid and its salts, methylglycine diacetic acid (MGDA) and its salts, N,N-dicarboxymethylglutamic acid and its salts (GLDA), and mixtures thereof. Among the salts of these compounds, alkali metal salts are preferred, especially sodium or potassium salts. Sodium salts are most preferred.

[0088] When the ready-to-use composition contains one or more chelating agents, the total content of the chelating agents is preferably from 0.01 wt% to 4 wt%, more preferably 0.02-3 wt%, more preferably 0.05-2 wt%, or 0.1-1 wt%; for example, 0.03 wt%, 0.05 wt%, 0.07 wt%, 0.09 wt%, 0.1 wt%, 0.12 wt%, 0.14 wt%, 0.16 wt%, 0.18 wt%, 0.2 wt%, 0.22 wt%, 0.24 wt%, 0.26 wt%, 0.28 wt%, 0.3 wt%, 0.5 wt%, 0.8 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, or any range between any two of the above values, relative to the total weight of the ready-to-use composition.

[0089] Additives Optionally, the ready-to-use composition may also contain at least one auxiliary agent conventionally used in oxidative staining systems.

[0090] The term "additive" refers to any additive other than the compounds mentioned above.

[0091] Examples of at least one adjuvant that may be used include antidandruff agents, vitamins and provitamins, plasticizers, acidifiers (e.g., hydroxy acids), thickeners, antioxidants (e.g., ascorbic acid, sodium sulfite), fragrances, or mixtures thereof.

[0092] Of course, those skilled in the art will take note of selecting one or more optional additional compounds so that the advantageous properties inherent to the composition according to the invention are not, or substantially not, adversely affected by the intended addition. The aforementioned adjuvants may generally be present in an amount not exceeding 3% by weight, preferably not exceeding 1% by weight, of the total weight of the ready-to-use composition.

[0093] It is worth noting that the ready-to-use compositions of the present invention do not contain any polyols, such as glycols, polyethylene glycols, triols, sugar alcohols, etc.

[0094] Multi-compartment kit The multi-compartment kit of the present invention includes a first compartment and a second compartment. The first compartment contains a reagent comprising at least one oxidizing dye precursor, at least one fatty substance, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, and at least one alkalizing agent. The second compartment contains a reagent comprising at least one oxidizing agent and optionally or preferably at least one fatty substance, which may be the same as or different from the at least one fatty substance in the first compartment.

[0095] The multi-compartment kit of the present invention may include more than two compartments, and in addition to the first and second compartments described above, the other compartments may contain one or more ingredients that can enhance the coloring or conditioning or care of the keratin material.

[0096] The multi-compartment kit of the present invention may consist of only two compartments, and one or more components that enhance the coloring, conditioning or care of keratin materials may optionally be contained in any of the two compartments.

[0097] In the ready-to-use composition, the at least one oxidized dye precursor, the at least one alkalizing agent, and at least a portion of the at least one fatty substance should be present in one compartment. While oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate may be included in either or both of the two compartments, it is preferred that oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate are included together with the at least one oxidized dye precursor. Therefore, the first compartment contains at least one oxidized dye precursor, at least one fatty substance, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, and at least one alkalizing agent.

[0098] In addition to oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, the first compartment may also contain a surfactant selected from zwitterionic surfactants, anionic surfactants, nonionic surfactants, and mixtures thereof. In a preferred embodiment, the first compartment may further contain a mixture of zwitterionic surfactants, anionic surfactants, and nonionic surfactants. The types of zwitterionic surfactants, anionic surfactants, and nonionic surfactants are the same as those defined above for ready-to-use compositions.

[0099] The first compartment may also contain at least one chelating agent, at least one adjuvant, or a mixture thereof. The types of chelating agents and adjuvants are the same as those defined above for ready-to-use compositions.

[0100] Preferably, the pH value of the reagent in the first compartment is 7.0 to 12.0, more preferably 8.0 to 11.0, and even more preferably 9.0 to 10.5.

[0101] In the ready-to-use composition, the at least one oxidizing agent should be separate from the at least one oxidizing dye precursor and the at least one alkalizing agent. Therefore, the at least one oxidizing agent is contained in the second compartment, and optionally or preferably, the second compartment also contains at least one fatty substance, which may be the same as or different from the at least one fatty substance in the first compartment.

[0102] Preferably, the second compartment further comprises a surfactant selected from zwitterionic surfactants, anionic surfactants, nonionic surfactants, and mixtures thereof. In a preferred embodiment, the second compartment may further comprise a mixture of anionic and nonionic surfactants. The types of zwitterionic, anionic, and nonionic surfactants are the same as those defined above for ready-to-use compositions.

[0103] Preferably, the second compartment further comprises at least one chelating agent, at least one adjuvant, or a mixture thereof. The types of chelating agents and adjuvants are the same as those defined above for ready-to-use compositions.

[0104] Preferably, the pH value of the reagent in the second compartment is 2.0 to 6.5, more preferably 2.5 to 5.5, and even more preferably 2.8 to 5.0.

[0105] The fatty substance may be contained in either or both of the first and second compartments, provided that the total content of the fatty substance is 15–40 wt%, preferably 20–35 wt%, more preferably 22–30 wt%, and the content of the liquid fatty substance is at least 10 wt%, preferably 10–30 wt%, more preferably 12–25 wt%, each wt% based on the total weight of the reagents in the first and second compartments.

[0106] As for all the components in the first and second compartments, their contents should also meet the requirements defined above for ready-to-use compositions, except that the calculation basis is the total weight of the reagents in the first and second compartments.

[0107] method The present invention also relates to a method for dyeing keratin materials, particularly human hair, comprising the steps of applying the ready-to-use composition of the present invention to the keratin material, or applying a mixture of reagents in a first compartment and a second compartment to the keratin material; and leaving the keratin material on for no more than 25 minutes, preferably no more than 22 minutes, more preferably about 20 minutes.

[0108] The mass ratio of the reagent in the first compartment to the reagent in the second compartment is in the range of 1:10 to 10:1, for example, 1:5 to 5:1, 1:3 to 3:1, preferably 1:1.

[0109] Example The present invention will now be described through the following embodiments. These embodiments are intended to help those skilled in the art better understand and implement the present invention. The scope of the present invention is not limited by the embodiments, but is defined by the appended claims.

[0110] Unless otherwise stated, all parts and percentages are based on weight. In all embodiments, the same names refer to the same substances.

[0111] Compositions A1 to A4 Prepare ready-to-use compositions A1 (Example of the Invention), A2 (Comparative Example), A3 (Comparative Example), and A4 (Comparative Example) using the ingredients in Table 1. The first agent and the second agent are mixed at a mass ratio of 1:1.

[0112] 1) Eumulgin B3 is a surfactant used as an emulsifier. Its main component is cetearyl alcohol polyether-30, which was purchased from BASF.

[0113] 2) Brij S100-PA is a surfactant used as an emulsifier. Its main component is stearyl alcohol polyether-100, which was purchased from Croda.

[0114] 3) Crodafos CES is a surfactant used as an emulsifier. Its main components are cetyl ether-10 phosphate and dicetyl phosphate, purchased from Croda.

[0115] Staining tests of compositions A1 to A4 During application, the first and second agents are mixed at a mass ratio of 1:1, and then applied to 100% white natural hair at a ratio of 5g of mixture to 1g of hair. Composition A1 (Example of the Invention) is left on the hair strand for 20 minutes, while compositions A2 to A4 are left for 30 minutes. The hair strand is then thoroughly rinsed with water and air-dried in the dark. The color intensity is tested after dyeing as follows.

[0116] L was tested using a Datacolor DC 500 (light source: D65 pulsed xenon lamp, wavelength range: 360–700nm) and a Color controller (light source: D65, T60(5) from TILO). a b-value. Each hair bundle is tested 16 times (8 times from the front and 8 times from the back) to obtain L. a b Values, including L (Brightness), a (Green-Red), b (Blue-Yellow), and calculate the average value.

[0117] Chromaticity coordinates are determined by parameter a and b It means, a Represents the red-green axis, b This represents the yellow-blue axis. For each strand of dyed hair, the color is calculated and evaluated using the following formula: .

[0118] Table 2:

[0119] Color C The value reflects color intensity; the higher the value, the better the color intensity. The results show that composition A1 exhibited a more vibrant color even after only 20 minutes on a hair strand compared to other samples that remained for 30 minutes.

[0120] Compositions A5 to A7 Prepare ready-to-use compositions A5 (Example of the Invention), A6 (Example of the Invention), and A7 (Example of the Invention) using the ingredients in Table 3, with the first agent and the second agent mixed at a mass ratio of 1:1.

[0121] Table 3:

[0122] The dyeing effects of compositions A5 to A7 were tested according to the method described above for composition A1. The results are shown in Table 4 below. After a dyeing time of 20 minutes, all hair strands dyed with compositions A5 to A7 achieved a satisfactory and intense color.

[0123] Table 4:

[0124] Although some preferred embodiments have been described, many modifications and variations can be made thereto in accordance with the foregoing teachings. Therefore, it should be understood that the invention may be practiced in ways different from those specifically described without departing from the scope of the appended claims.

Claims

1. A ready-to-use composition for oxidative dyeing of keratin materials, particularly human hair, comprising: -15-40% by weight, preferably 20-35% by weight, more preferably 22-33% by weight, of at least one fatty substance, wherein the content of at least one liquid fatty substance is at least 10% by weight, preferably 10-30% by weight, more preferably 12-25% by weight, each percentage by weight based on the total weight of the ready-to-use composition. -Oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, preferably in a weight ratio of 20:80 to 80:20, more preferably 30:70 to 70:30, and even more preferably 55:45 to 65:

35. - At least one oxidative dye precursor - at least one alkalizing agent, and - At least one oxidizing agent.

2. The composition according to claim 1, wherein the at least one fatty substance comprises a mixture of solid fatty substances and liquid fatty substances.

3. The composition according to claim 1 or 2, wherein the at least one fatty substance is selected from: - Straight-chain or branched hydrocarbons containing 6-35 carbon atoms, -wax, - Hydrocarbon-based oils of animal or plant origin; - Unoxyalkylated, saturated or unsaturated, straight-chain or branched fatty alcohols containing 6 to 30 carbon atoms, and -Saturated or unsaturated, straight-chain or branched C1-C 26 Aliphatic monocarboxylic acids or polycarboxylic acids, or inorganic monocarboxylic acids or polycarboxylic acids, with saturated or unsaturated, straight-chain or branched C1-C bonds. 26 Esters of aliphatic monohydric or polyhydric alcohols.

4. The composition according to any one of claims 2 to 3, wherein the solid fatty substance is selected from cetyl alcohol, stearyl alcohol, cetearyl alcohol, arachidyl alcohol, betaine alcohol, cetyl palmitate, or mixtures thereof.

5. The composition according to any one of claims 1 to 4, wherein the liquid fatty substance is selected from liquid paraffin, mineral oil, isoparaffin, liquid petrolatum, polydecene, white oil, lactic acid oleyl alcohol ester; ethyl palmitate, isopropyl palmitate, 2-ethylhexyl palmitate, isopropyl myristate, butyl myristate, hexyl stearate, butyl stearate, isobutyl stearate, hexyl laurate, caprylic / capric triglyceride, decyl oleate, octyl dodecyl alcohol, hydrogenated polyisobutylene, pentaerythritol tetraethylhexanoate, isononyl isononanoate, pentaerythritol tetraisostearate, oleic acid, or mixtures thereof.

6. The composition according to any one of claims 1 to 5, wherein the ready-to-use composition does not contain any polyols.

7. The composition according to any one of claims 1 to 6, wherein the contents of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate are 0.5-8% by weight, preferably 1-6% by weight, more preferably 1.5-5% by weight, based on the total weight of the ready-to-use composition.

8. The composition according to any one of claims 1 to 7, wherein the oxidative dye precursor comprises at least one oxidizing base and optionally at least one color-forming agent; preferably, the content of the oxidative dye precursor is 0.01-8% by weight, preferably 0.1-5% by weight, based on the total weight of the ready-to-use composition; The oxidizing base is preferably selected from 4,5-diaminopyrazoles, p-phenylenediamines, dibasic bases, p-aminophenols, o-aminophenols, pyridine derivatives, pyrimidine derivatives, pyrazolopyrimidine derivatives, pyrazolones, and their addition salts (preferably their acid addition salts); preferably, the oxidizing base in the second agent is present in an amount of 0.01-5% by weight, preferably 0.02-3% by weight, based on the total weight of the ready-to-use composition, and The colorant is preferably selected from m-aminophenol, m-phenylenediamine, m-diphenol, naphthol, and heterocyclic colorants, such as indole derivatives, dihydroindole derivatives, sesamol and its derivatives, pyridine derivatives, pyrazolotriazole derivatives, pyrazolone, indazole, benzimidazole, benzothiazole, benzoxazole, 1,3-benzodioxane, quinoline, and benzomorpholine, and their addition salts (preferably their acid addition salts); preferably, the content of the colorant in the second agent is 0.01-5% by weight, preferably 0.02-3% by weight, based on the total weight of the ready-to-use composition.

9. The composition according to any one of claims 1 to 8, wherein the alkalizing agent is selected from ammonia, alkali metal carbonates and bicarbonates, alkanolamines and their derivatives, sodium hydroxide, and potassium hydroxide; preferably, the content of the alkalizing agent is from 0.05% to 20% by weight, more preferably 2-15% by weight, and even more preferably 3-12% by weight, based on the total weight of the ready-to-use composition.

10. The composition according to any one of claims 1 to 9, wherein the at least one oxidant is selected from peroxides such as (aqueous) hydrogen peroxide and urea peroxide, alkali metal bromates and alkali metal ferrocyanides; preferably, the content of the at least one oxidant is from 0.1% to 20% by weight, more preferably from 0.5% to 10% by weight, based on the total weight of the ready-to-use composition.

11. The composition according to any one of claims 1 to 10, wherein the composition further comprises a surfactant selected from zwitterionic surfactants, anionic surfactants, nonionic surfactants, and mixtures thereof. Preferably, the zwitterionic surfactant is selected from cocamidopropyl betaine, cocamidopropyl betaine, lauryl betaine, lauryl hydroxysulfonyl betaine, lauryl dimethyl betaine, cocamidopropyl hydroxysulfonyl betaine, betaine, capryloyl / decanoyl aminopropyl betaine, lauryl hydroxysulfonyl betaine, stearyl betaine, or mixtures thereof; preferably, the content of the zwitterionic surfactant can be from 0.05% to 5% by weight, preferably 0.1-4% by weight, more preferably 0.2-2% by weight, based on the total weight of the ready-to-use composition; and / or Preferably, the anionic surfactant is selected from (C 10 -C 20 )alkyl ether sulfates, especially sodium lauryl ether-2 sulfate, (C 10 -C 20 )alkyl ether phosphate salts, (C 10 -C 20 )alkyl ether carboxylates, (C 10 -C 20 )alkyl sulfonates, (C 10 -C 20 Alkylbenzene sulfonate or a mixture thereof; preferably, the content of the anionic surfactant can be from 0.05% to 5% by weight, preferably 0.1-4% by weight, more preferably 0.2-2% by weight, based on the total weight of the ready-to-use composition, and / or Preferably, the nonionic surfactant is selected from ethoxylated C8-C containing 1 to 200 oxyethylidene groups, preferably 1 to 50 oxyethylidene groups. 24 Fatty alcohols and mixtures thereof, especially cetearyl alcohol polyether-20; (ethoxylated) C8-C of glycerol or sorbitol 30 Fatty acid esters; preferably, the content of the nonionic surfactant can be from 0.05% to 5% by weight, preferably 0.1-4% by weight, more preferably 0.2-2% by weight, based on the total weight of the ready-to-use composition.

12. The composition according to any one of claims 1 to 11, wherein the composition further comprises: - One or more chelating agents, preferably selected from carboxylic acids, preferably aminocarboxylic acids, phosphonic acids, preferably aminophosphonic acids, polyphosphoric acids, preferably linear polyphosphoric acids, their salts and derivatives; preferably, the content of the chelating agent is 0.01-4% by weight, preferably 0.05-2% by weight, based on the total weight of the ready-to-use composition; and / or - One or more adjuvants selected from antidandruff agents, vitamins and provitamins, pigments, direct dyes, plasticizers, acidifiers, thickeners, antioxidants, hydroxy acids, and fragrances, preferably in an amount not exceeding 3% by weight, more preferably not exceeding 1% by weight, based on the total weight of the ready-to-use composition.

13. The composition according to any one of claims 1 to 12, wherein the water content is 45-70% by weight, preferably 50-65% by weight, based on the total weight of the ready-to-use composition.

14. The composition according to any one of claims 1 to 13, wherein the pH value of the composition is 7.0 to 11.5, preferably 8 to 11.

15. A multi-compartment kit for oxidative staining of keratin materials, particularly human hair, comprising: The first compartment contains a reagent comprising at least one oxidized dye precursor, at least one aliphatic substance, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, and at least one alkalizing agent; and The second compartment contains a reagent comprising at least one oxidizing agent and optionally, or preferably, at least one fatty substance, said fatty substance being the same as or different from said at least one fatty substance in the first compartment. The total content of the at least one fatty substance is 15-40% by weight, preferably 20-35% by weight, more preferably 22-30% by weight, and the total content of the at least one liquid fatty substance is at least 10% by weight, preferably 10-30% by weight, more preferably 12-25% by weight, with each weight percentage based on the total weight of the reagents in the first and second compartments; and The weight ratio of oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate is 20:80 to 80:20, preferably 30:70 to 70:30, and more preferably 55:45 to 65:

35.

16. The multi-compartment kit of claim 15, wherein the at least one oxidizing dye precursor, the at least one aliphatic substance, the at least one alkalizing agent, and the at least one oxidizing agent are the same as those defined in any one of claims 1 to 14.

17. The multi-compartment kit according to claim 15 or 16, wherein the contents of the at least one oxidizing dye precursor, oleyl alcohol polyether-5 phosphate and dioleyl alcohol phosphate, the at least one alkalizing agent and the at least one oxidizing agent are the same as those defined in any one of claims 1 to 14, except that the contents are based on the total weight of the reagents in the first compartment and the second compartment.

18. The multi-compartment kit according to any one of claims 15 to 17, wherein the reagent in the first compartment and the reagent in the second compartment independently further comprise a surfactant, one or more chelating agents, one or more additives, or a mixture thereof; and wherein the surfactant, the one or more chelating agents, and the one or more additives and their amounts are the same as those defined in claim 11 or claim 12.

19. A method for dyeing keratin materials, particularly human hair, comprising applying a ready-to-use composition according to any one of claims 1 to 14 to the keratin material, or applying a mixture of reagents in a first compartment and a second compartment as defined in claim 15 or 16 to the keratin material, and leaving the mixture on the keratin material for no more than 25 minutes, preferably no more than 22 minutes, more preferably about 20 minutes.

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