Hair dyeing composition with improved durability

Abstract

The present invention relates to a dyeing composition for keratin fibres comprising: a) one or more first direct dyes chosen from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof; b) one or more second direct dyes chosen from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof; and c) one or more basifying agents.

Description

Technical Field

[0001] The present invention aims to provide a dyeing composition for keratin fibers, a dyeing method, and the use of certain direct dyes. Background Technology

[0002] Over the past decade, direct dyes have received particular attention from the cosmetics industry. Compared to their oxidative counterparts, direct dyes are easier to apply to keratin fibers, but they generally lack durability on keratin fibers.

[0003] The applicant has developed new direct dyes (EP1366752) that complement the availability and color range of existing dyes. The aforementioned series of developed dyes includes HC Blue 18, HC Red 18, and HC Yellow 16.

[0004] Generally, one of the technical challenges of direct dyes is their low durability on keratin fibers, which have been damaged by previous chemical treatments such as perming or bleaching. Chemical treatments alter the internal structure of hair compared to its natural state, often improving the coloring effect, but direct dyes are also easily washed out. Therefore, consumers who have previously undergone chemical hair treatments may experience lower durability with direct dyes, especially after multiple washes. Furthermore, while color intensity gradually fades after several washes, hair may experience additional, unforeseen color shifts depending on the different bleeding rates of the individual direct dyes.

[0005] In the daily operations of a hair salon, analyzing a customer's previous hair damage isn't always easy, as some previous treatments may have been washed away and their effects are no longer visible. When assuming healthy hair and proceeding with direct coloring, hairdressers and customers may be surprised to find that the coloring is very short-lived and that unwanted color shifts occur after only a few washes. Such an experience is sure to be frustrating for everyone involved.

[0006] In summary, existing technologies have failed to satisfactorily address the aforementioned challenges. Therefore, there is a genuine need to develop direct dyeing compositions for keratin fibers that are effective and have good durability regardless of the history of chemical treatment. Summary of the Invention

[0007] Therefore, a first object of the present invention is a dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0008] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0009] b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or salts thereof, and / or mixtures thereof; and

[0010] c) One or more alkalizing agents.

[0011] A second object of the present invention is a two-component hair dye composition comprising a first composition as defined above and a second aqueous composition having a pH in the range of 1 to 6 and optionally containing one or more oxidants (preferably hydrogen peroxide).

[0012] A third objective of the present invention is a method for dyeing keratin fibers, preferably human keratin fibers, and more preferably human hair, comprising the following steps:

[0013] i) Provide the composition as defined above and optionally mix it with a second aqueous composition having a pH in the range of 1 to 6 and optionally containing an oxidant (preferably hydrogen peroxide) to produce a ready-to-use composition having a pH in the range of 7 to 12;

[0014] ii) Apply the ready-to-use composition to keratin fibers and leave it on for a period of 1 minute to 60 minutes; and

[0015] iii) Optionally rinse the keratin fibers and optionally dry them.

[0016] A fourth object of the present invention is a method for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the following steps:

[0017] x) Applying an aqueous composition to keratin fibers, the aqueous composition having a pH in the range of 7 to 12 and comprising one or more compounds according to groups a) and c) as defined above;

[0018] xi) Allow the composition of step x) to remain on the keratin fibers for a period of 1 minute to 60 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers;

[0019] xii) Applying an aqueous composition to keratin fibers, the aqueous composition having a pH in the range of 3 to 12 and comprising one or more compounds of groups b) and c) as defined above; and

[0020] xiii) Allow the composition of step xii) to remain on the keratin fibers for a period of 1 minute to 60 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers.

[0021] A fifth object of the present invention is the use of compositions comprising compounds of groups b) and c) as defined above for improving wash fastness of compositions comprising compounds of groups a) and c) as defined above on keratin fibers, preferably human keratin fibers, more preferably human hair, and even more preferably on human hair that has undergone pre-chemical treatment.

[0022] A sixth object of the present invention is a kit for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the following composition:

[0023] - Compositions comprising compounds from groups a) and c) as defined above;

[0024] - Compositions comprising compounds from groups b) and c) as defined above; and

[0025] -Optional aqueous oxidizing composition, having a pH in the range of 1 to 6 and preferably containing hydrogen peroxide. Detailed Implementation

[0026] The inventors of this invention have unexpectedly discovered that a combination of one or more hair dyes selected from HC Blue 18, HC Red 18, HC Yellow 16, and / or their salts, and / or mixtures thereof, with other direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof, improves the dyeing effect and wash fastness of HC Blue 18, HC Red 18, HC Yellow 16, and / or their salts, and / or mixtures thereof on keratin fibers (especially keratin fibers previously damaged by chemical treatment). The combination of the above dyes allows for hair dyeing without prior analysis of hair health. Therefore, any undesirable low durability and fading after multiple washes can be suppressed, and the resulting hair color is uniform, intense, and bright.

[0027] Dyeing Composition

[0028] This invention relates to a dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0029] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0030] b) one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof; and

[0031] c) One or more alkalizing agents.

[0032] According to the compound in a)

[0033] The compositions of the present invention comprise one or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures as compounds according to group a).

[0034] From the perspective of dyeing intensity, the total concentration of one or more first direct dyes according to group a) is preferably 0.001% by weight or more, more preferably 0.005% by weight or more, and even more preferably 0.01% by weight or more, calculated by the total weight of the composition.

[0035] From the perspective of cosmetic safety and product cost, the total concentration of one or more first direct dyes according to group a) is preferably less than 1% by weight, more preferably less than 0.75% by weight, and even more preferably less than 0.5% by weight, calculated by the total weight of the composition.

[0036] To achieve the above effects, the total weight of one or more first direct dyes according to group a) is preferably in the range of 0.001 wt% to 1 wt%, more preferably in the range of 0.005 wt% to 0.75 wt%, and even more preferably in the range of 0.01 wt% to 0.5 wt%, calculated by the total weight of the composition.

[0037] According to compound b)

[0038] The compositions of the present invention comprise one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or salts thereof, and / or mixtures thereof as compounds according to group b).

[0039] From the perspective of wash fastness on bleached keratin fibers, it is preferable to select one or more compounds from group b) from Disperse Black 9, and / or its salts, and / or mixtures thereof.

[0040] Therefore, this disclosure also relates to:

[0041] A dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0042] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0043] b) one or more second direct dyes selected from Disperse Black 9, and / or its salts, and / or mixtures thereof; and

[0044] c) One or more alkalizing agents

[0045] Preferably, the keratin fibers are bleached keratin fibers.

[0046] From the perspective of wash fastness on scalded keratin fibers, it is preferred to select one or more compounds from group b) from Acid Yellow 1, and / or its salts, and / or mixtures thereof.

[0047] Therefore, this disclosure also relates to:

[0048] A dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0049] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0050] b) one or more second direct dyes selected from Acid Yellow 1, and / or its salts, and / or mixtures thereof; and

[0051] c) One or more alkalizing agents

[0052] Preferably, the keratin fibers are scalded keratin fibers.

[0053] Another public disclosure involves:

[0054] A dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0055] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0056] b) One or more second direct dyes, which are mixtures of Dispersion Black 9 and Acid Yellow 1, and / or their salts; and

[0057] c) One or more alkalizing agents

[0058] Preferably, the keratin fibers are scalded and / or bleached keratin fibers.

[0059] From the perspective of wash fastness on scalded or bleached keratin fibers, it is preferred to select one or more compounds from group b) from 2-amino-6-chloro-4-nitrophenol, and / or its salts, and / or mixtures thereof.

[0060] Therefore, the present invention also relates to:

[0061] A dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0062] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0063] b) one or more second direct dyes selected from 2-amino-6-chloro-4-nitrophenol, and / or its salts, and / or mixtures thereof; and

[0064] c) One or more alkalizing agents

[0065] Preferably, the keratin fibers are scalded and / or bleached keratin fibers.

[0066] From the perspective of wash fastness, based on the total weight of the composition, it is further preferred that the total concentration of one or more second direct dyes according to group b) is 0.001% by weight or more, more preferably 0.01% by weight or more, even more preferably 0.05% by weight or more, and even more preferably 0.1% by weight or more.

[0067] From the perspective of cosmetic safety and economic reasons, it is further preferred that the total concentration of one or more second direct dyes according to group b) is less than 2% by weight, and even more preferably less than 1% by weight, calculated by the total weight of the composition.

[0068] To achieve the above effects, it is further preferred that the total concentration of one or more second direct dyes according to group b) is in the range of 0.001 wt% to 2 wt% based on the total weight of the composition, more preferably in the range of 0.01 wt% to 1 wt%, and even more preferably in the range of 0.05 wt% to 1 wt%.

[0069] From the perspective of color balance and wash fastness, it is further preferred that the weight ratio of the dye according to group a) to the dye according to group b) is 5 or less, more preferably 3 or less, and even more preferably 1.5 or less.

[0070] From the perspective of wash fastness, it is further preferred that the weight ratio of the dye according to group a) to the dye according to group b) is 0.05 or more, more preferably 0.1 or more, and even more preferably 0.15 or more.

[0071] To achieve the above effects, it is preferable that the weight ratio of the dye according to group a) to the dye according to group b) is in the range of 5-0.05, more preferably in the range of 3-0.1, and even more preferably in the range of 1.5-0.15.

[0072] According to compound c)

[0073] The compositions of the present invention further comprise one or more alkalizing agents as compounds according to group c).

[0074] In principle, all alkalizing agents are suitable for the purposes of this invention, provided that they provide sufficient alkalinity to the composition, i.e., are able to raise the pH of the composition to the range of 7 to 12 upon contact with water.

[0075] From the perspective of providing alkalinity and cosmetic safety, one or more compounds according to group c) are preferably selected from ammonia and / or its salts and / or organic alkalizing agents and / or their salts.

[0076] Particularly preferred organic alkalizing agents as compounds according to group c) are selected from organic alkylamines and / or alkanolamines and / or their salts that conform to the following general formula:

[0077]

[0078] R1, R2 and R3 are independently selected from H, straight-chain C1-C6 alkyl groups substituted or unsubstituted with a hydroxyl group, or branched C3-C12 alkyl groups or alkanols, wherein at least one of R1, R2 or R3 is different from H, and / or their salts, and / or mixtures thereof.

[0079] Preferably, from the perspective of providing alkalinity and cosmetic safety as well as their low odor, one or more organic alkalizing agents are selected from alkylamines and / or alkanolamines and / or their salts, more preferably from monoethanolamine, diethanolamine, monoethanol methylamine, monoethanol dimethylamine, diethanol methylamine, monoethanol ethylamine, monoethanol diethylamine, diethanol ethylamine, monoethanol propylamine, monoethanol dipropylamine, diethanol propylamine, monoethanol butylamine, diethanol butylamine, trimethylamine, triethylamine, 2-amino-2-methylpropanol, tri-(hydroxymethyl)-aminomethane, and / or their salts, and / or mixtures thereof.

[0080] From the perspective of providing alkalinity and cosmetic safety, the most preferred alkalizing agents are selected from monoethanolamine, 2-amino-2-methylpropanol, tris-(hydroxymethyl)-aminomethane, and / or salts thereof, ammonia and / or salts thereof, and / or mixtures thereof.

[0081] From the perspective of providing alkalinity, based on the total weight of the composition, it is preferred that the total concentration of one or more alkanolamines and / or their salts, and / or ammonia and / or their salts, is 0.1% by weight or more, more preferably 0.25% by weight or more, and even more preferably 0.4% by weight or more.

[0082] From the perspective of providing alkalinity, hair damage and odor, based on the total weight of the composition, it is preferred that the total concentration of the compounds in group c) is less than 40% by weight, more preferably less than 30% by weight, and even more preferably less than 25% by weight.

[0083] To achieve the above effects, the total concentration of one or more alkanolamines and / or their salts, and / or ammonia and / or their salts, is preferably in the range of 0.1% to 40% by weight, more preferably in the range of 0.25% to 30% by weight, and even more preferably in the range of 0.4% to 25% by weight, based on the total weight of the composition and according to the total concentration of the compounds in group c).

[0084] Cosmetic form of the composition

[0085] The dyeing compositions of the present invention can be used in various cosmetic forms.

[0086] Aqueous Composition

[0087] In one aspect of the invention, the dyeing composition is an aqueous composition.

[0088] The term "aqueous" means a composition that contains a majority of water, that is, from the point of view of obtaining a cosmetically acceptable composition, the composition preferably contains more than 50% by weight, more preferably more than 60% by weight, more preferably more than 70% by weight, and even more preferably more than 80% by weight of water.

[0089] From the perspective of dyeing strength, it is even more preferable that the composition contains less than 98% by weight, more preferably less than 95% by weight, and even more preferably less than 92% by weight, based on the total weight of the composition.

[0090] To achieve the above effects, the total concentration of water, calculated by the total weight of the composition, is preferably in the range of 50% to 98% by weight, more preferably in the range of 60% to 95% by weight, even more preferably in the range of 70% to 92% by weight, and even more preferably in the range of 80% to 92% by weight.

[0091] From the perspective of dyeing performance, the preferred aqueous composition has a pH of 7 or higher, more preferably a pH of 7.5 or higher, even more preferably a pH of 8 or higher, and even more preferably a pH of 8.5 or higher.

[0092] From the perspective of hair damage and dyeing performance, the pH of the preferred composition is below 12, more preferably below 11, and even more preferably below 10.8.

[0093] To achieve the above-mentioned effects, it is preferred that the pH value of the aqueous dyeing composition is in the range of 7 to 12, more preferably in the range of 7.5 to 11, even more preferably in the range of 8 to 10.8, and even more preferably in the range of 8.5 to 10.8.

[0094] From the perspective of selecting compounds according to group c), any of the compounds listed above are suitable for adjusting the pH of aqueous compositions.

[0095] Therefore, this disclosure also relates to an aqueous dyeing composition for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 7 to 12, preferably in the range of 7.5 to 11, more preferably in the range of 8 to 10.8, and even more preferably in the range of 9 to 10.8, comprising:

[0096] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0097] b) one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof; and

[0098] c) One or more alkalizing agents.

[0099] The composition contains more than 50% by weight of water, calculated by the total weight of the composition.

[0100] Liquid compositions containing less than 1% by weight of water

[0101] In another aspect of the invention, the dyeing composition is a liquid composition at 25°C and atmospheric pressure, comprising one or more organic solvents as compounds according to group d), and containing less than 1% by weight of water based on the total weight of the composition. From the viewpoint of dye stability, the composition is preferably anhydrous.

[0102] The term "liquid" refers to the physical state at 25°C and atmospheric pressure, meaning that the dyeing composition is liquid at room temperature.

[0103] The term "anhydrous" means a composition that does not contain added water. This does not exclude the presence of residual moisture from the air or water of crystallization bound to the components.

[0104] With respect to this aspect of the invention, the composition may contain one or more organic solvents as compounds according to group d).

[0105] Organic solvents may be selected to dissolve compounds according to groups a) to c). Preferred solvents are monohydric, dihydric, and trihydric alcohols and / or mixtures thereof.

[0106] From the perspective of cosmetic safety and solubility, preferred monohydric, dihydric, and trihydric alcohols are ethanol, n-propanol, isopropanol, propylene glycol, ethylene glycol, benzyl alcohol, phenoxyethanol, and glycerin, and / or mixtures thereof.

[0107] From the perspective of solution stability, it is further preferred that the total concentration of the compounds according to group d) is 75% by weight or more, more preferably 80% by weight or more, and even more preferably 85% by weight or more, calculated by the total weight of the composition.

[0108] From the perspective of dyeing intensity, based on the total weight of the composition, it is further preferred that the total concentration of the compounds according to group d) is 98% by weight or less, more preferably 95% by weight or less, and even more preferably 92% by weight or less.

[0109] To achieve the above effects, the total concentration of the compounds according to group d) is preferably in the range of 75% to 98% by weight, more preferably in the range of 80% to 95% by weight, and even more preferably in the range of 85% to 92% by weight, calculated by the total weight of the composition.

[0110] Therefore, this disclosure also relates to an anhydrous dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0111] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0112] b) one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof; and

[0113] c) One or more alkalizing agents

[0114] Wherein, the total concentration of the compound according to d) is 75% by weight or more, calculated based on the total weight of the composition.

[0115] Powder Composition

[0116] In one aspect of the invention, the dyeing composition may be a powder composition.

[0117] The term "powder" refers to a solid component at 25°C and atmospheric pressure. This term encompasses both free-flowing powders and compressed powders such as tablets. Powder compositions may also contain water, provided their solid properties remain unchanged at 25°C. Depending on the type of powder, a water content of 10% by weight or more, based on the total weight of the composition, is acceptable.

[0118] From the perspective of composition stability and ease of use, it is preferred that the dyeing composition contains one or more powdered excipients as compounds according to group e).

[0119] The term "excipient" refers to a compound that can act as a filler and dispersant for other compounds in a dyeing composition, without reacting with dyes and alkalizing agents, thereby giving the powder high storage stability over a long period of time.

[0120] The dyeing compositions of the present invention may contain organic and / or inorganic powdered excipients, wherein an alkalizing agent and a direct dye are dispersed.

[0121] Suitable organic and / or inorganic powdered excipients are, for example, diatomaceous earth, kaolin, bentonite, starch, especially corn starch, cassava starch, rice starch, wheat starch and potato starch, nylon powder, montmorillonite, gypsum, sawdust and perlite.

[0122] From the perspective of achieving good dispersibility of direct dyes in powder and rapid dissolution of powder, the total concentration of organic and / or inorganic powdered excipients, calculated by the total weight of the composition, is preferably 50% by weight or more, more preferably 55% by weight or more, even more preferably 60% by weight or more, even more preferably 65% ​​by weight or more, even more preferably 70% by weight or more, and even more preferably 75% by weight or more.

[0123] From the perspective of achieving good dispersibility of direct dyes in powder and formulation freedom, the total concentration of organic and / or inorganic powdered excipients, calculated by the total weight of the composition, is preferably 98% by weight or less, more preferably 95% by weight or less, and even more preferably 90% by weight or less.

[0124] To achieve the above-mentioned effects, the total concentration of organic and / or inorganic powdered excipients, calculated by the total weight of the composition, is preferably in the range of 50% to 98% by weight, more preferably in the range of 55% to 95% by weight, even more preferably in the range of 60% to 90% by weight, even more preferably in the range of 65% to 90% by weight, even more preferably in the range of 70% to 90% by weight, and even more preferably in the range of 75% to 90% by weight.

[0125] Therefore, the present invention also relates to a dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0126] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0127] b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof;

[0128] c) one or more alkalizing agents; and

[0129] e) One or more powdered excipients

[0130] The composition is a powder composition, and

[0131] The total concentration of the compounds in group e) is preferably 50% by weight or more, calculated based on the total weight of the composition.

[0132] According to the lipophilic compounds in group f)

[0133] Preferably, the dyeing composition of the present invention comprises one or more lipophilic compounds as compounds according to group f).

[0134] The term "lipophilic" means that a liquid compound at 25°C and atmospheric pressure will not completely mix with water under these conditions.

[0135] Preferably, the lipophilic compound is selected from fatty alcohols, fatty acids, waxes, vegetable oils, petrolatum products, silicones, amination silicones, and compounds conforming to the following general formula:

[0136]

[0137] Among them, R 4 Selected from saturated or unsaturated alkyl groups having straight or branched chains from C11 to C21, and optionally modified with one hydroxyl group, and R 5 The compound is selected from straight-chain or branched saturated or unsaturated alkyl groups having C3 to C18, and from the perspective of film uniformity and pigment deposition, the compound is preferably ethylhexyl hydroxystearate.

[0138] Suitable fatty alcohols are straight-chain or branched saturated or unsaturated fatty alcohols having C12 to C22, such as lauryl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, palmitol, heptadecanol, stearyl alcohol, nonadecanol, arachidyl alcohol, behenyl alcohol, and / or mixtures thereof.

[0139] Suitable fatty acids are saturated or unsaturated fatty acids with or without hydroxyl groups. Suitable examples include myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, arachidonic acid, and / or mixtures thereof.

[0140] Suitable compounds conforming to the above general formula are: isopropyl palmitate, isopropyl myristate, octyl palmitate, isocetyl palmitate, octyl stearate, oleate, ethylhexyl hydroxystearate, myristyl myristate, behenate, and / or mixtures thereof.

[0141] Suitable vegetable oils include jojoba oil, avocado oil, sunflower seed oil, walnut oil, peanut oil, olive oil, rapeseed oil, cottonseed oil, palm oil, sesame oil, soybean oil, coconut oil, safflower oil, almond oil, macadamia nut oil, grapefruit seed oil, lemon kernel oil, orange kernel oil, almond oil, castor oil, and / or mixtures thereof.

[0142] Suitable petrolatum products are liquid paraffins, especially light liquid paraffins (paraffinum perliquidum) and heavy liquid paraffins (paraffinum subliquidum), as well as mineral oils, especially white mineral oils, and / or mixtures thereof.

[0143] Suitable silicones are polydimethylsiloxanes and modified silicones (e.g., amino-modified silicones, fluorinated silicones, alcohol-modified silicones, polyether-modified silicones, epoxy-modified silicones, or alkyl-modified silicones), but polydimethylsiloxanes, polyether-modified silicones, and amino-modified silicones are preferred. Amino-modified silicones are commonly known by their CTFA name, amino-terminated polydimethylsiloxane.

[0144] Specific examples of suitable commercially available amino-terminated polydimethylsiloxanes include SF8452C, SS-3551 (all supplied by Dow Corning Toray Co., Ltd.), KF-8004, KF-867S, and KF-8015 (all supplied by Shin-Etsu Chemical Co., Ltd.), and amino-terminated polydimethylsiloxane emulsions such as SM8704C, SM8904, BY22-079, FZ-4671, and FZ-4672 (all supplied by Dow Corning Toray Co., Ltd.).

[0145] Amino-modified silicones can be any silicones having amino or quaternary ammonium groups, examples of which include amine-modified silicone oils having all or part of terminal hydroxyl groups, for example, capped with methyl groups, and amino-capped polydimethylsiloxanes without capping.

[0146] The composition may contain one or more waxes. Suitable, non-limiting, and preferred examples are petrolatum, ozokerit, carnauba wax, paraffin wax, lanolin wax, candelilla wax, beeswax, microcrystalline wax, and glyceryl cocoate.

[0147] From the perspective of dyeing intensity, the dyeing composition may contain lipophilic compounds according to group f), preferably with a total concentration of 0.1% by weight or more, more preferably 0.5% by weight or more, and even more preferably 1% by weight or more, calculated by the total weight of the composition.

[0148] From the perspective of the dyeing strength and washability of keratin fibers, the dyeing composition may contain lipophilic compounds according to group f), preferably with a total concentration of less than 40% by weight, more preferably less than 30% by weight, and even more preferably less than 25% by weight, calculated by the total weight of the composition.

[0149] To achieve the above effects, the dyeing composition preferably contains, by weight of f), a lipophilic compound, with a total concentration in the range of 0.1% to 40% by weight, more preferably in the range of 0.5% to 30% by weight, and even more preferably in the range of 1% to 25% by weight.

[0150] In one aspect of the invention, this disclosure also relates to an aqueous dyeing composition for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 7 to 12, preferably in the range of 7.5 to 11, more preferably in the range of 8 to 10.8, and even more preferably in the range of 9 to 10.8, comprising:

[0151] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0152] b) one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof; and

[0153] c) One or more alkalizing agents

[0154] Wherein, based on the total weight of the composition, the composition contains more than 50% by weight of water, and

[0155] The composition is an emulsion and comprises one or more compounds according to group f), the compounds being selected from fatty alcohols having branched or straight saturated or unsaturated carbon chains having carbon chain lengths in the range of C12 to C22, fatty acids having branched or straight saturated or unsaturated carbon chains having carbon chain lengths in the range of C12 to C22, ester oils, vegetable oils, silicone oils, and paraffin oils.

[0156] In another aspect, the present invention also relates to a dyeing composition for keratin fibers, preferably for human keratin fibers, and more preferably for human hair, comprising:

[0157] a) One or more first direct dyes selected from HC Blue 18, HC Red 18 and / or HC Yellow 16, and / or their salts, and / or mixtures thereof;

[0158] b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and / or their salts, and / or mixtures thereof;

[0159] c) one or more alkalizing agents; and

[0160] e) One or more powdered excipients

[0161] Wherein, the composition is a powder composition, and

[0162] Based on the total weight of the composition, preferably the total concentration of the compound according to e) is 50% by weight or more, and

[0163] The composition comprises one or more lipophilic compounds according to group f), preferably having a total concentration of 1% by weight or more.

[0164] Technicians will note that the latter composition is a dust-free dyeing powder or dyeing paste.

[0165] Surfactants are compounds based on g).

[0166] From the perspective of the miscibility of the dyeing composition and the wettability of keratin fibers, it is further preferred that the composition of the present invention also contains one or more surfactants as compounds according to group g), more preferably selected from nonionic surfactants, cationic surfactants, anionic surfactants, zwitterionic surfactants / amphoteric surfactants.

[0167] Suitable anionic surfactants are, in principle, anionic surfactants known in the cleaning composition. These are sulfate, sulfonate, carboxylate, and alkyl phosphate type anionic surfactants, such as the known C... 10 -C 18 Alkyl sulfates, especially their respective ether sulfates, such as C 12 -C 14 Alkyl ether sulfates, especially lauryl ether sulfates having 1 to 4 ethylene oxide groups in the molecule, monoglyceride (ether) sulfates, fatty acid amide sulfates obtained by ethoxylation and subsequent sulfation of fatty acid alkanolamides, their alkali metal salts, and salts of long-chain monoalkyl and dialkyl phosphates. Preferred anionic surfactants are alkyl sulfate surfactants, particularly lauryl sulfates and their salts.

[0168] Other suitable surfactants are nonionic surfactants. Non-limiting examples include long-chain fatty acid mono- and dialkylolamides (e.g., coconut oil fatty acid mono- or diethanolamide and myristate fatty acid mono- or diethanolamide, stearic acid mono- or diethanolamide), alkyl groups having 8 to 18 carbon atoms and alkyl polyglucosides having 1 to 5 glucoside units, sorbitol esters (e.g., polyethylene glycol sorbitan stearate, palmitate, myristate, and laurate), fatty acid polyethylene glycol esters, or polycondensates of ethylene oxide and propylene oxide (e.g., commercially available under the name "Pluronics"). R "), and fatty alcohol ethoxylates, C 10 -C 22 Fatty alcohol ethoxylates (known by the general terms “Laureth”, “Myristeth”, “Oleth”, “Ceteth”, “Deceth”, “Steareth”, and “Ceteareth” according to CTFA nomenclature, and including the number of ethylene oxide molecules added, such as “Laureth-16”: thus, the average degree of ethoxylation is between about 2.5 and about 100, preferably between about 10 and about 30).

[0169] Suitable amphoteric / amphoionic surfactants are particularly suitable for various known betaines, such as alkyl betaines, fatty acid amide alkyl betaines, and sulfobetaines, such as lauryl hydroxysulfobetaine; long-chain alkyl amino acids, such as cocoaminoacetate, cocoaminopropionate, and sodium cocoamphopropionate and sodium cocoamphoacetate, are also suitable.

[0170] Typical cationic surfactants include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, dipalmitoyldimethylammonium chloride, distearatedimethylammonium chloride, stearamidepropyltrimethylammonium chloride, dioleoylethyldimethylammonium methyl sulfate, and dioleoylethylhydroxyethylammonium methyl sulfate.

[0171] From the perspective of composition stability, wettability of keratin fibers and component dispersibility, the total concentration of the compound (g) is preferably 0.1% by weight or more, more preferably 0.2% by weight or more, and even more preferably 0.25% by weight or more, calculated by the total weight of the composition.

[0172] From the perspective of composition stability, wettability of keratin fibers and component dispersibility, the total concentration of the compound (g) is preferably 5% by weight or less, more preferably 4% by weight or less, and even more preferably 2.5% by weight or less, calculated by the total weight of the composition.

[0173] To achieve the above-mentioned effects, the total concentration of the compound (g) is preferably in the range of 0.1 wt% to 5 wt%, more preferably in the range of 0.2 wt% to 4 wt%, and even more preferably in the range of 0.2 wt% to 2.5 wt%, calculated by the total weight of the composition.

[0174] Dyes different from groups a) and b)

[0175] The dyeing compositions of the present invention may contain one or more dyeing compounds different from those in groups a) and b), preferably selected from oxidized dye precursors, oxidized dye colorants and / or direct dyes.

[0176] Suitable precursors for oxidative dyes include p-phenylenediamine, p-aminophenol, and heterocyclic compounds such as diaminopyrazole and substituted pyrimidines. Suitable colorants include resorcinol, m-aminophenol, m-phenylenediamine, pyridine and substituted derivatives, and naphthol.

[0177] Suitable color-forming agents for oxidative dyes include 5-amino-2-methylphenol, 2-methyl-5-hydroxyethylaminophenol, 2,4-diaminophenoxyethanol, 2-amino-4-hydroxyethylaminoanisole, 2-methyl-5-amino-6-chlorophenol, 1,3-bis(2,4-diaminophenoxy)propane, 2-bis(2-hydroxyethyl)aminotoluene, 2-amino-5-methylphenol, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-4-chlorophenol, 5-amino-4-methoxy-2-methylphenol, 2-aminophenol, 3-aminophenol, 1-methyl-2-hydroxy-4-aminobenzene, 3-N,N-dimethylaminophenol, 2,6-dihydroxy-3,5-dimethoxypyridine, and 5-amino... 3-Methylphenol, 6-amino-3-methylphenol, 1,3-diaminobenzene, 1-amino-3-(2'-hydroxyethylamino)benzene, 1-amino-3-[bis(2'-hydroxyethyl)amino]benzene, α-naphthol, 4,6-dichlororesorcinol, 1,3-diaminotoluene, 4-hydroxy-1,2-methylenedioxybenzene, 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1-hydroxy-2-methylnaphthalene, 4-hydroxy-1,2-methyldioxybenzene, 2,4-diamino-3-chlorophenol, 5-amino-2-methoxyphenol and / or 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene, and / or their salts and / or mixtures thereof.

[0178] The dyeing composition of the present invention may contain an equimolar proportion of an oxidative dye colorant and / or precursor, for example, a total concentration in the range of 0.001-5% by weight of the composition.

[0179] Direct dyes other than those based on groups a) and b) may be selected from cationic direct dyes, anionic direct dyes, and / or nonionic direct dyes.

[0180] From the perspective of fully dyeing keratin fibers, the total concentration of one or more direct dyes (if present) in the composition of the present invention, other than those according to groups a) and b), is preferably 0.01% by weight or more, more preferably 0.05% by weight or more, and even more preferably 0.1% by weight or more, calculated by the total weight of the composition.

[0181] From the perspective of economic reasons and formulation freedom, the total concentration of one or more direct dyes (if present) in the composition of the present invention, other than groups a) and b), is preferably 10% by weight or less, more preferably 9% by weight or less, further preferably 7.5% by weight or less, further more preferably 6% by weight or less, and even more preferably 4% by weight or less, calculated by the total weight of the composition.

[0182] To achieve the above-mentioned effects, the total concentration of one or more direct dyes (if present) in the composition of the present invention, excluding groups a) and b), is in the range of 0.01% by weight to 10% by weight, preferably in the range of 0.05% by weight to 9% by weight, more preferably in the range of 0.1% by weight to 7.5% by weight, even more preferably in the range of 0.1% by weight to 6% by weight, and even more preferably in the range of 0.1% by weight to 4% by weight, calculated by the total weight of the composition.

[0183] In one aspect of the invention, the composition of the invention may further comprise one or more oxidative dye colorants and / or precursors.

[0184] Two-component composition

[0185] The present invention also relates to a two-component staining composition comprising a first composition as described above and a second aqueous composition, the second aqueous composition having a pH in the range of 1 to 6, and optionally containing one or more oxidizing agents, preferably hydrogen peroxide.

[0186] The second aqueous composition preferably contains hydrogen peroxide as an oxidant. A suitable concentration range, based on the total weight of the second aqueous composition, is 0.1% to 20% by weight, preferably 0.25% to 15% by weight, and more preferably 0.5% to 12% by weight.

[0187] With appropriate acid and alkali adjustment, the pH of the second aqueous composition is preferably in the range of 1.5 to 5, more preferably in the range of 2 to 4.5.

[0188] From the perspective of miscibility with the first composition, as described above for the dyeing composition, it is further preferred that the second aqueous composition contains one or more lipophilic compounds according to f). In this case, the second aqueous composition is an emulsion, and as described above for the dyeing composition, it preferably also contains one or more surfactants as compounds according to g).

[0189] The first and second compositions of this aspect of the invention are intended to be mixed directly before being applied to keratin fibers.

[0190] Staining methods

[0191] The present invention also relates to a method for dyeing keratin fibers, preferably human keratin fibers, and more preferably human hair, comprising the following steps:

[0192] i) Provide the composition as defined above and optionally mix it with the second aqueous composition as defined above to produce a ready-to-use composition with a pH in the range of 7 to 12;

[0193] ii) Applying the ready-to-use composition to keratin fibers and allowing it to remain for a period of 1 minute to 60 minutes; and

[0194] iii) Optionally rinse the keratin fibers and optionally dry them.

[0195] From the perspective of color intensity, it is preferable that the pH of the ready-to-use composition defined in step i) is in the range of 8 to 11, more preferably in the range of 8.5 to 10.5.

[0196] From the perspective of staining intensity and the economy of the staining method, it is further preferred that the dwell time defined in step ii) is in the range of 2 minutes to 45 minutes, more preferably in the range of 5 minutes to 40 minutes, and even more preferably in the range of 10 minutes to 30 minutes.

[0197] From the perspective of cosmetic safety, it is further preferred to rinse the keratin fibers in step iii).

[0198] This method is particularly suitable for chemically damaged keratin fibers, and more preferably for bleached and / or scalded keratin fibers.

[0199] The present invention also relates to a method for dyeing keratin fibers, preferably human keratin fibers, and more preferably human hair, comprising the following steps:

[0200] x) Applying an aqueous composition to keratin fibers, the aqueous composition having a pH in the range of 7 to 12 and comprising one or more compounds according to groups a) and c) as defined above;

[0201] xi) Allow the composition of step x) to remain on the keratin fibers for a period of 1 minute to 60 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers;

[0202] xii) Applying an aqueous composition to keratin fibers, the aqueous composition having a pH in the range of 3 to 12 and comprising one or more compounds of groups b) and c) as defined above; and

[0203] xiii) Allow the composition of step xii) to remain on the keratin fibers for a period of 1 minute to 45 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers.

[0204] From the perspective of improving wash fastness, it is preferable to perform step xii) without delay after step xi), or to delay the washing of keratin fibers by 1 to 5 times between steps xi) and xii).

[0205] This method is particularly suitable for chemically damaged keratin fibers, and more preferably for bleached and / or scalded keratin fibers.

[0206] From the perspective of cosmetic safety, it is preferable to rinse the keratin fibers in step xiii).

[0207] From the perspective of cosmetic safety and dyeing strength, it is further preferred that the pH of the composition defined in step xii) is in the range of 4 to 11.5, more preferably in the range of 4.5 to 11, and even more preferably in the range of 7 to 10.8.

[0208] Uses to improve wash fastness

[0209] The present invention also relates to the use of compositions comprising compounds of groups b) and c) as defined above for improving wash fastness of compositions comprising compounds of groups a) and c) as defined above on keratin fibers, preferably on human keratin fibers, more preferably on human hair, and even more preferably on human hair that has undergone pre-chemical treatment.

[0210] Further preferred use is on bleached and / or permed keratin fibers.

[0211] kit

[0212] The present invention also relates to a kit for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the following composition:

[0213] - Compositions comprising compounds of groups a) and c) as defined above;

[0214] - Compositions comprising compounds from groups b) and c) as defined above; and

[0215] -Optionally, an aqueous oxidation composition with a pH in the range of 1 to 6 and preferably containing hydrogen peroxide.

[0216] From the perspective of dyeing strength and cosmetic safety, compositions containing compounds from groups b) and c) are preferably aqueous compositions with a pH range of 3 to 12, more preferably 4.5 to 11, and more preferably 7 to 10.8. The term "aqueous" means that the composition contains more than 50% by weight of water based on the total weight of the composition.

[0217] For commercial reasons, compositions comprising compounds from groups a) and c) are further preferred to be aqueous compositions with a pH range of 7 to 12, preferably 8 to 11, and more preferably 8.5 to 10.8. The definition of the term "aqueous" also applies.

[0218] The following examples are for illustrative purposes only and do not limit the scope of the invention.

[0219] Example

[0220] The dyeing compositions described in Tables 1 and 2 were prepared by first dissolving the alkalizing agent and then adding the dye to water. Finally, the pH was adjusted. Dye concentrations were selected and matched to produce a similar degree of dyeing on white goat hair.

[0221]

[0222]

[0223] Results Discussion

[0224] Comparative examples 1 and 2 illustrate the poor wash fastness of bleached or permed hair. An angle Δh* deviating by more than 200 degrees compared to the original hair indicates a difference in color between the bleached and permed hair.

[0225] Comparative Examples 3 and 4 show that other direct hair dyes such as sodium gluconate (yellow) and HC Yellow 13 (yellow) cannot resolve the Stark shift in tone angle of bleached or permed hair.

[0226] Example 1 illustrates that Disperse Black 9 improves wash fastness on bleached hair, while Acid Yellow 1 improves wash fastness on permed hair, as shown in Example 2. The combination of these two dyes simultaneously improves wash fastness on both bleached and permed hair. Similarly, Example 4 illustrates that 2-amino-6-chloro-4-nitrophenol improves wash fastness on both bleached and permed hair and can be used in combination with other direct dyes (examples are given in Example 5).

[0227] method

[0228] Hair preparation

[0229] Before any processing, pre-wash and blow-dry commercially available goat hair (15cm long, 2g per bundle).

[0230] The hair, commercially permed, is available from the brand Goldwell under the trade name Structure and Shine. The first step involves applying a reducing composition containing thioglycolic acid to the hair, leaving it on for 20 minutes, then rinsing it off and applying an oxidizing composition containing hydrogen peroxide. The oxidizing composition is left on the hair for 15 minutes, then the hair is shampooed and blow-dried. The hair obtained through this method is then used in a dyeing experiment on permed hair.

[0231] For bleached hair, a commercially available bleaching agent, OxycurPlatin, is used. The bleaching powder contains peroxide and is mixed with an oxidizing composition containing hydrogen peroxide at a 1:1 weight ratio before application to the hair. The ready-to-use mixture is then applied to the hair and left for 20 minutes. The hair is then rinsed thoroughly, shampooed, and blow-dried. Hair obtained using this method is used for dyeing experiments on bleached hair.

[0232] hair dye

[0233] Apply 2g of each of the above compositions to the hair prepared as described above and leave it at ambient temperature for 20 minutes. Then rinse the hair with water and blow dry.

[0234] The hair strands were colorimetrically measured using a colorimeter employing the CIE colorimetric system (L*, a*, b*). For further calculations, these values ​​were labeled "recently dyed".

[0235] Wash fastness test

[0236] Each hair strand was then placed in a shaker containing a 1.5% by weight sodium lauryl solution and kept at 40°C and 100 rpm for 30 minutes. The hair strands were then rinsed with water and blow-dried. Colorimetric measurements were performed again to obtain (L*, a*, b*) values. For further calculations, these were labeled "washed".

[0237] C* and h calculations

[0238] To assess the color difference between washed and freshly dyed hair, the a* and b* values ​​of the washed samples were subtracted from the a* and b* values ​​of the freshly dyed samples.

[0239] Then calculate C* using the following formula:

[0240]

[0241] Then h is calculated using the following formula:

[0242]

[0243] The C* or h values ​​for permed or bleached hair in Tables 1 and 2 report the difference (wash fastness) between washed and freshly dyed hair. The closer the value is to 0, the lower the fading of the dye.

[0244] The following embodiments are within the scope of this invention.

[0245] Invention Embodiment 6

[0246] The following dyeing compositions can be produced using conventional formulation techniques.

[0247]

[0248] Invention Embodiment 7

[0249] The following dyeing compositions can be produced using conventional formulation techniques.

[0250]

[0251]

[0252] Alternatively, they can also be mixed with the following oxidizing compositions:

[0253]

[0254] The appropriate mixing ratio of the dyeing composition to the oxidizing composition is in the range of 0.1 to 10 by weight, preferably in the range of 0.5 to 3 by weight.

Claims

1. A dyeing composition for keratin fibers, wherein, Include: a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; (b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; as well as c) One or more alkalizing agents, Based on the total weight of the composition, the total concentration of the first direct dye according to group a) is in the range of 0.001% by weight to 1% by weight. Based on the total weight of the composition, the total concentration of one or more second direct dyes according to group b) is in the range of 0.001% by weight to 2% by weight. The weight ratio of the dye from group a) to the dye from group b) is in the range of 0.049 / 1.1 to 5. The composition is an aqueous composition with a pH range of 7 to 12.

2. The composition according to claim 1, characterized in that, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.05 to 5.

3. The composition according to claim 1, characterized in that, The weight ratio of dyes according to group a) to dyes according to group b) is in the range of 0.1 to 3.

4. The composition according to claim 1, characterized in that, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.15 to 1.

5.

5. The composition according to any one of claims 1-4, characterized in that, The total concentration of the first direct dye according to group a) is in the range of 0.005% by weight to 1% by weight, calculated based on the total weight of the composition.

6. The composition according to any one of claims 1-4, characterized in that, The total concentration of the first direct dye according to group a) is in the range of 0.005% by weight to 0.75% by weight, calculated based on the total weight of the composition.

7. The composition according to any one of claims 1-4, characterized in that, The total concentration of the first direct dye according to group a) is in the range of 0.01% by weight to 0.5% by weight, calculated based on the total weight of the composition.

8. The composition according to any one of claims 1-4, characterized in that, The total concentration of one or more second direct dyes according to group b) is in the range of 0.01% by weight to 2% by weight, calculated based on the total weight of the composition.

9. The composition according to any one of claims 1-4, characterized in that, The total concentration of one or more second direct dyes according to group b) is in the range of 0.01% by weight to 1% by weight, calculated based on the total weight of the composition.

10. The composition according to any one of claims 1-4, characterized in that, The total concentration of one or more second direct dyes according to group b) is in the range of 0.05% by weight to 1% by weight, calculated based on the total weight of the composition.

11. The composition according to any one of claims 1-4, characterized in that, One or more alkalizing agents, as compounds according to group c), are selected from ammonia and / or its salts, and / or organic alkalizing agents and / or their salts.

12. The composition according to any one of claims 1-4, characterized in that, One or more alkalizing agents, as compounds according to group c), are selected from organic alkylamines and / or alkanolamines and / or their salts that conform to the following general formula: R1, R2, and R3 are independently selected from H, straight-chain C1-C6 alkyl groups substituted or unsubstituted with a hydroxyl group, or branched C3-C12 alkyl groups or alkanols, wherein at least one of R1, R2, or R3 is different from H.

13. The composition according to any one of claims 1-4, characterized in that, The total concentration of the compounds according to group c) is in the range of 0.1% to 40% by weight, calculated based on the total weight of the composition.

14. The composition according to any one of claims 1-4, characterized in that, The total concentration of the compounds according to group c) is in the range of 0.25% to 30% by weight, calculated based on the total weight of the composition.

15. The composition according to any one of claims 1-4, characterized in that, The total concentration of the compounds according to group c) is in the range of 0.4% to 25% by weight, calculated based on the total weight of the composition.

16. The composition according to any one of claims 1-4, characterized in that, The composition is an aqueous composition with a pH range of 7.5 to 12.

17. The composition according to any one of claims 1-4, characterized in that, The composition is an aqueous composition with a pH range of 7.5 to 11.

18. The composition according to any one of claims 1-4, characterized in that, The composition is an aqueous composition with a pH range of 8 to 10.

8.

19. The composition according to any one of claims 1-4, characterized in that, The composition is an aqueous composition with a pH range of 8.5 to 10.

8.

20. The composition according to any one of claims 1-4, characterized in that, The composition comprises one or more dye compounds different from those in groups a) and b), the dye compounds being selected from oxidative dye precursors, oxidative dye colorants, and / or direct dyes.

21. A dyeing composition for keratin fibers, wherein, Include: a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; (b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; as well as c) One or more alkalizing agents, Based on the total weight of the composition, the total concentration of the first direct dye according to group a) is in the range of 0.001% by weight to 1% by weight. Based on the total weight of the composition, the total concentration of one or more second direct dyes according to group b) is in the range of 0.001% by weight to 2% by weight. The weight ratio of the dye from group a) to the dye from group b) is in the range of 0.049 / 1.1 to 5. According to group c), one or more alkalizing agents are capable of raising the pH of the composition to the range of 7 to 12 upon contact with water. The composition is a liquid composition at 25°C and atmospheric pressure, comprising one or more organic solvents as compounds according to group d), and comprising less than 1% by weight of water based on the total weight of the composition.

22. A dyeing composition for keratin fibers, wherein, Include: a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; (b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; as well as c) One or more alkalizing agents, Based on the total weight of the composition, the total concentration of the first direct dye according to group a) is in the range of 0.001% by weight to 1% by weight. Based on the total weight of the composition, the total concentration of one or more second direct dyes according to group b) is in the range of 0.001% by weight to 2% by weight. The weight ratio of the dye from group a) to the dye from group b) is in the range of 0.049 / 1.1 to 5. According to group c), one or more alkalizing agents are capable of raising the pH of the composition to the range of 7 to 12 upon contact with water. The composition is a powder composition and contains one or more powdered excipients as compounds according to group e).

23. A two-component hair dye composition, wherein, It comprises a first composition and a second aqueous composition. The first composition is the composition according to any one of claims 1-4. The second aqueous composition has a pH value in the range of 1 to 6 and optionally contains one or more oxidizing agents.

24. The two-component hair dye composition according to claim 23, characterized in that, The second aqueous composition contains hydrogen peroxide as one or more oxidizing agents.

25. A method for staining keratin fibers, comprising the following steps: i) Provide a composition as defined in any one of claims 1-4, and optionally mix it with a second aqueous composition as defined in any one of claims 23-24 to produce a ready-to-use composition with a pH in the range of 7 to 12; ii) Applying the ready-to-use composition to keratin fibers and allowing it to remain for a period of 1 minute to 60 minutes; and iii) Optionally rinse the keratin fibers and optionally dry them.

26. A method for staining keratin fibers, comprising the following steps: x) Applying an aqueous composition to keratin fibers, said aqueous composition having a pH value in the range of 7 to 12 and comprising one or more compounds according to groups a) and c) below; xi) Allow the composition of step x) to remain on the keratin fibers for a period of 1 minute to 60 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers; xii) Applying an aqueous composition to keratin fibers, said aqueous composition having a pH value in the range of 7 to 12 and comprising one or more compounds according to groups b) and c) below; as well as xiii) Allow the composition from step xii) to remain on the keratin fibers for a period of 1 minute to 60 minutes, optionally rinse the keratin fibers, and optionally dry the keratin fibers. a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; (b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; as well as c) One or more alkalizing agents, Based on the total weight of the compounds in groups a), b), and c), and assuming the total concentration of the first direct dye in group a) is in the range of 0.001% by weight to 1% by weight, Based on the total weight of compounds from groups a), b), and c), and assuming the total concentration of one or more second direct dyes from group b) is in the range of 0.001% by weight to 2% by weight, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.049 / 1.1 to 5.

27. The method according to claim 26, characterized in that, Step xii) can be performed without time delay after step xi), or the keratin fibers can be washed 1 to 5 times between steps xi) and xii).

28. Use of a composition comprising compounds from groups b) and c) below for improving the wash fastness of a composition comprising compounds from groups a) and c) below on keratin fibers. a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; and c) One or more alkalizing agents, Based on the total weight of the compounds in groups a), b), and c), and assuming the total concentration of the first direct dye in group a) is in the range of 0.001% by weight to 1% by weight, Based on the total weight of compounds from groups a), b), and c), and assuming the total concentration of one or more second direct dyes from group b) is in the range of 0.001% by weight to 2% by weight, The weight ratio of the dye from group a) to the dye from group b) is in the range of 0.049 / 1.1 to 5. One or more alkalizing agents according to group c) are capable of raising the pH of the composition to the range of 7 to 12 upon contact with water.

29. The use according to claim 28, characterized in that, The composition comprising compounds of groups b) and c) is intended to improve the wash fastness of the composition comprising compounds of groups a) and c) on pre-treated human hair.

30. A kit for staining keratin fibers, wherein, It comprises the following composition: -A composition comprising compounds from groups a) and c) below; - A composition comprising compounds from groups b) and c) below; as well as -Optional aqueous oxidizing composition, having a pH in the range of 1 to 6 and containing hydrogen peroxide, a) A first direct dye containing HC Blue 18, HC Red 18 and HC Yellow 16, and / or their salts; (b) One or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, and / or their salts; as well as c) One or more alkalizing agents, Based on the total weight of the compounds in groups a), b), and c), and assuming the total concentration of the first direct dye in group a) is in the range of 0.001% by weight to 1% by weight, Based on the total weight of compounds from groups a), b), and c), and assuming the total concentration of one or more second direct dyes from group b) is in the range of 0.001% by weight to 2% by weight, The weight ratio of the dye from group a) to the dye from group b) is in the range of 0.049 / 1.1 to 5. One or more alkalizing agents according to group c) are capable of raising the pH of the composition to the range of 7 to 12 upon contact with water.

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