Hair treatment kit and treatment method
The hair treatment kit with compositions A and B addresses color bleeding in oxidative dyes by using dihydroxy phenolic compounds and polymers, achieving reduced color bleeding and improved hair properties.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- KAO GERMANY GMBH
- Filing Date
- 2025-12-19
- Publication Date
- 2026-06-25
AI Technical Summary
Existing hair dye products, particularly oxidative dyes, suffer from significant color bleeding during the first shampooing, leading to inconsistent and undesirable hair color results.
A hair treatment kit comprising compositions A and B, where composition A includes oxidative or direct hair dyes and composition B contains dihydroxy phenolic compounds and polymers with reactive nucleophilic nitrogen groups, applied in a specific method to reduce color bleeding and improve hair properties.
The treatment significantly reduces color bleeding and enhances hair feel, touch, and suppleness while maintaining long-lasting hair color.
Smart Images
Figure EP2025088278_25062026_PF_FP_ABST
Abstract
Description
[0001] HAIR TREATMENT KIT AND TREATMENT METHOD
[0002] Field of the invention
[0003] The present invention is directed to a hair treatment kit and treatment method.
[0004] Background of the invention
[0005] Consumers and professional users place high demands on hair dye products, expecting long-lasting, high-performance results that effectively cover gray hair. These products typically consist of oxidative or direct hair dyes. However, an issue arises immediately after dyeing the hair when users may observe a significant amount of color bleeding during the first shampooing. This unexpected color bleeding can lead to a hair color that differs from the initial one achieved directly after dyeing. This phenomenon is particularly undesirable for all users of oxidative dyes, necessitating the development of products that can effectively reduce the color bleeding associated with these dyes.
[0006] Consequently, there is a clear need for innovative solutions to address and mitigate the color bleeding of oxidative dyes, in order to meet the expectations of consumers and professional users for consistent and long-lasting hair color results.
[0007] Summary of the invention
[0008] The first object of the present invention is a hair treatment kit-of-parts comprising:
[0009] - a composition A comprising one or more hair dye(s),
[0010] - a composition B comprising: a) one or more dihydroxy phenolic compound according to general structure wherein R1is a straight or branched, saturated or unsaturated C2 to Ce alkyl chain, preferably a C2 to C4 alkyl chain, the alkyl chain being substituted with one or more hydroxyl, carboxyl, and / or amino groups, and more preferably R1is selected from *CH2-CH2-OH, *CH-CH-COOH, H2-CH2-NH2, H2N-*CH-CH2-COOH, HO-*CH-CH2- NH2, HO- H-CH2-NH-CH3, HO-*CH-COOH, HO-*CH-CH2OH, b) one or more polymers comprising a functional group having one or more reactive nucleophilic nitrogen(s),
[0011] - an optional composition C having a pH in the range of 1 to 6 and comprising hydrogen peroxide.
[0012] The second object of the present invention is a method for treating hair comprising the following steps: i) applying to hair the composition A as defined in any of the claims 1 to 14 and leaving it onto hair for a time period of 1 to 120 min, or ii) mixing the compositions A and C as defined in any of the claims 1 to 14 to yield a ready-to-use composition having a pH in the range of 7 to 12 and leaving it onto hair for a time period of 1 to 120 min, then iii) rinsing-off the hair and optionally drying the hair, then iv) applying to hair the composition B as defined in any of the claims 1 to 14 and leaving it onto hair for a time period of 1 to 60 min, then v) optionally drying the hair, then vi) applying heat to hair at a temperature in the range of 60°C to 230°C.
[0013] Detailed description of the invention
[0014] The inventors or the present invention have unexpectedly and surprisingly found that treating hair with a composition B according to the independent claims of the present invention after artificially dyeing the hair with a composition A resulted in a strong reduction of color bleeding upon washing and a reduction of potential hair color shift. In addition, the cosmetic properties such as feel, touch, softness and suppleness of the hair were improved after the treatment.
[0015] Composition A
[0016] The composition A of the present invention comprises one or more hair dye(s).
[0017] Suitably, the one or more hair dyes are oxidative hair dyes, preferably, preferably said one or more oxidative hair dye(s) are one or more o-phenylenediamines, m- phenylenediamines, p-phenylenediamines, p-toluene-diamine, resorcinols, m- aminophenols, pyridines, naphthols, and / or their salt(s), and / or their mixtures. Suitably, the one or more oxidative hair dyes are p-phenylenediamine, 2-methoxy- methyl-p-phenylenediamine, p-toluene-diamine, hydroxyethyl-p-phenylene-diamine, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-3-hydroxypyridine, 5- amino-6-chloro-o-cresol, 2,6-dihydroxy-3,4-dimethyl-pyridine, 2,6-dimethoxy-3,5- pyridine-diamine HCI, 5-amino-2,6-dimethoxy-3-hydroxypyridine, 6-methoxy-2- methylamino-3-aminopyridine, 2,3-diamino-6-methoxy-pyridine, 2,6-diaminopyridine, 1 ,3-bis(2,4-diamino-phenoxy)propane, and / or their salt(s), and / or their mixture(s), more preferably the oxidative hair dyes is / are 2-methoxy-methyl-p-phenylenediamine, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-3-hydroxypyridine, 5- amino-6-chloro-o-cresol, 2,6-dihydroxy-3,4-dimethyl-pyridine, 2,6-dimethoxy-3,5- pyridine-diamine HCI, 5-amino-2,6-dimethoxy-3-hydroxypyridine, 6-methoxy-2- methylamino-3-aminopyridine, 2,3-diamino-6-methoxy-pyridine, 2,6-diaminopyridine, 1 ,3-bis(2,4-diamino-phenoxy)propane, and / or their salt(s), and / or their mixture(s).
[0018] More preferably, the one or more oxidative hair dyes are p-toluene diamine, 1- naphthol, p-phenylene diamine, 2-methoxy-methyl-p-phenylenediamine, and / or their salt(s), and / or their mixtures, still more preferably the one or more compound(s) according to group a) is p-toluene diamine, 1 -naphthol, and / or their salt(s), and / or their mixtures.
[0019] In addition to oxidative hair dyes, or as an alternative to oxidative hair dyes, the composition A of the present invention may comprise one or more hair direct dyes. In particular, anionic, cationic, or neutral hair direct dyes are suitable.
[0020] Preferably, the one or more direct dye(s) are Acid Yellow 1 , Acid Yellow 3, Acid Yellow 9, Acid Yellow 17, Acid Yellow 23, Acid Yellow 36, Acid Yellow 121 , Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 11 , Acid Orange 15, Acid Orange 20, Acid Orange 24, Acid Red 14, Acid Red, Acid Red 27, Acid Red 33, Acid Red 35, Acid Red 51 , Acid Red 52, Acid Red 73, Acid Red 87, Acid Red 92, Acid Red 95, Acid Red 184, Acid Red 195, Acid Violet 49, Acid Violet 50, Acid Blue 1 , Acid Blue 3, Acid Blue 7, Acid Blue 104, Acid Blue 9, Acid Blue 62, Acid Blue 74, Acid Blue 80, Acid Green 3, Acid Green 5, Acid Green 9, Acid Green 22, Acid Green 25, Acid Green 50, Acid Black 1 , Acid Black 52, Food Yellow 8, Food Blue 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11 , D&C Red 21 , D&C Red 27, D&C Red 33, D&C Violet 2 and / or D&C Brown 1 , Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41 , Basic Blue 47, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Green 1 , Basic Green 4, Basic Orange 1 , Basic Orange 2, Basic Orange 31 , Basic Red 1 , Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 51 , Basic Red 76, Basic Red 118, Basic Violet 1 , Basic Violet 3, Basic Violet 4, Basic Violet 10, Basic Violet 11 :1 , Basic Violet 14, Basic Violet 16, Basic Yellow 11 , Basic Yellow 28, Basic Yellow 57, Basic Yellow 87, HC Blue No. 2, HC Blue No. 5, HC Blue No. 6, HC Blue No. 9, HC Blue No. 10, HC Blue No. 11 , HC Blue No. 12, HC Blue No. 13, HC Blue No. 15, HC Blue 18, HC Orange No. 1 , HC Orange No. 2, HC Orange No. 3, HC Red No. 1 , HC Red No. 3, HC Red No. 7, HC Red No. 10, HC Red No. 11 , HC Red No. 13, HC Red No. 14, HC Red 18, HC Violet No. 1 , HC Violet No. 2, HC Yellow No. 2, HC Yellow No. 4, HC Yellow No. 5, HC Yellow No. 6, HC Yellow No. 9, HC Yellow No. 10, HC Yellow No. 11 , HC Yellow No. 12, HC Yellow No. 13, HC Yellow No. 14, HC Yellow No. 15, HC Yellow 16, Disperse Black 9, Disperse Blue 1 , Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11 , Disperse Red 15, Disperse Red 17, Disperse Violet 1 , Disperse Violet 4, Disperse Violet 15, and / or their salt(s), and / or their mixtures, preferably said hair direct dye(s) of composition A are HC Blue 18, HC Red 18, HC Yellow 16, and / or their salt(s), and / or their mixtures, from the viewpoint of color intensity.
[0021] It is further preferred from the viewpoint of dyeing intensity and wash fastness, that one or more direct dye(s) are selected from HC Blue 18, HC Red 18, HC Yellow 16, Disperse Black 9, Acid Yellow 1 , 2-amino-6-chloro-4-nitrophenol, and / or their salt(s), and / or their mixtures.
[0022] The most preferred direct dyes is / are HC Blue 18, HC Red 18, HC Yellow 16, and / or their salt(s), and / or their mixtures.
[0023] It is preferred from the viewpoint of dyeing intensity and cometic safety that the total concentration of the one or more hair dyes is in the range of 0.1 % to 50% by weight, preferably in the range of 0.25% to 30% by weight, furthermore preferably in the range of 0.5% to 20% by weight, still more preferably in the range of 1 % to 10% by weight, calculated to the total weight of composition A.
[0024] It is further preferred from the viewpoint of alkalinity that compositions A and / or B further comprise one or more alkalizing agent(s), preferably said alkalizing agent(s) are alkali metal hydroxides or alkaline earth hydroxides, ammonia and / or its salt(s), alkyl and / or alkanolamines according to the general structure wherein R2, R3, R4 are the same or different from H, and R2, R3, R4 are selected from Ci to C4, C3 to C4 unsaturated alkyl, C3 to C4 branched alkyl, Ci to C4 hydroxyl alkyl, C3 to C4 unsaturated hydroxyl alkyl, C3 to C4 branched hydroxyl alkyl, with the condition that at least one of R2, R3, or R4 is different from H, and / or their mixtures, more preferably said alkyl or alkanolamines is / are monoethanolamine, diethanolamine, triethanolamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, tris-(hydroxymethyl)-aminomethane, and 2-aminomethyl propanol, and / or their mixtures, and / or their salt(s), most preferably said alkalizing agent sodium or potassium hydroxide, ammonia, monoethanolamine.
[0025] It is further preferred that the total concentration of the one or more alkalizing agents in the compositions A and / or B is in the range of 0.1 % to 50% by weight, preferably in the range 0.5% to 45% by weight, more preferably in the range of 1 % to 40% by weight, calculated to the total weight of each of the compositions A and / or B.
[0026] Product forms of composition A
[0027] Preferably, composition A is an aqueous composition comprising water at 50% by weight or more, preferably 60% by weight or more, still more preferably 75% by weight or more, calculated to the total weight of the composition A.
[0028] Preferably, the composition A has a pH in the range of 6 to 12, more preferably it has a pH in the range of 7 to 11 , still more preferably it has a pH in the range of 8 to 10.5.
[0029] Alternatively, the composition A may be a solid composition at 25°C and atmospheric pressure, preferably a hair dyeing powder composition, and more preferably the composition A comprises water at 10% by weight or less, more preferably the composition A comprises water at 1 % by weight or less, still more preferably the A- 17 / 24 composition A comprises water at 0.1 % by weight or less, calculated to the total weight of the composition A, still more preferably the composition A is anhydrous.
[0030] Composition B
[0031] The kit of the present invention also comprises a composition B. Said composition B comprises: a) one or more dihydroxy phenolic compound according to general structure wherein R1is a straight or branched, saturated or unsaturated C2 to Ce alkyl chain, preferably a C2 to C4 alkyl chain, the alkyl chain being substituted with one or more hydroxyl, carboxyl, and / or amino groups, and more preferably R1is selected from *CH2-CH2-OH, *CH-CH-COOH, *CH2-CH2-NH2, H2N- H-CH2-COOH, HO-*CH-CH2- NH2, HO- H-CH2-NH-CH3, HO-*CH-COOH, HO-*CH-CH2OH, b) one or more polymers comprising a functional group having one or more reactive nucleophilic nitrogen(s).
[0032] Preferably, the composition B is an aqueous composition comprising water at 50% by weight or more, more preferably at 60% by weight or more, still more preferably of 75% by weight or more, calculated to the total weight of the composition B.
[0033] Preferably, the pH of the composition B is in the range of 2 to 13, more preferably 2.5 to 11 , still more preferably in the range of 3.0 to 10.0.
[0034] Suitably, non-limiting examples of compound(s) according to group a) are hydroxytyrosol, caffeic acid, dopamine, dihydroxyphenylalanine, noradrenalin, adrenalin, dihydroxy mandelic acid and norepinephrine. Preferred compound(s) according to group a) are dopamine, hydroxytyrosol, caffeic acid, dihydroxyphenylalanine, and dihydroxy mandelic acid, and / or their mixtures. The most preferred compound(s) according to group a) are dopamine, hydroxytyrosol and / or caffeic acid, and / or their mixtures, most preferably it is hydroxytyrosol. It is preferred from the viewpoint of reducing color loss that the composition B comprises the compounds according to group a) at a total concentration in the range of 0.01 % to 10%, more preferably in the range of 0.1 % to 7.5%, still more preferably in the range of 0.2% to 6%, and most preferably in the range of 0.25% to 5% by weight, calculated to the total of composition B.
[0035] The composition B of the present invention further comprises a polymer having a functional group comprising reactive nucleophilic nitrogen(s) as compound(s) according to group b). Preferably, said polymers have one or more primary amino groups, one or more secondary amino groups, one or more tertiary amino groups, and / or one or more imidazole groups, preferably said polymers according to group b) are selected from Polyquaternium-68, Gluconamido amodimethicone, Polysilicone- 29, Amodimethicone, Chitosan, and / or their salt(s), and / or their mixtures.
[0036] The most preferred polymers according to group b) are Polyquaternium-68 and Gluconamido amodimethicone, and / or their salt(s), and / or their mixtures.
[0037] Preferably, the total concentration of the polymers according to group b) in composition B is in the range of 0.01 % to 10% by weight, preferably 0.1 % to 6% by weight, more preferably 0.5% to 5% by weight, still more preferably 1 % to 5% by weight, calculated to the total weight of the composition B.
[0038] In one aspect of the present invention, the composition B further comprises one or more oxidizing agents as compound(s) according to group c), preferably said compound(s) are selected from sodium persulfate, ammonium persulfate, potassium persulfate, potassium dichromate, potassium chlorate, peroxydisulfuric acid, peroxymonosulfuric acid, melanin peroxide, sodium perborate, sodium tetraborate, and / or their mixtures.
[0039] For this aspect, the total concentration of the oxidizing agents as compound(s) according to group c) in composition B is in the range of 0.01 % to 7.5% by weight, more preferably in the range of 0.1 % to 5% by weight, still more preferably in the range of 0.5% to 3% by weight, calculated to the total weight of the composition B.
[0040] It is further preferred from the viewpoint of reducing the wash fastness of direct dyes that the compositions A and B are separate compositions and are separately applied onto hair. Optional composition C
[0041] The optional composition C has a pH in the range of 1 to 6 and comprises hydrogen peroxide. Suitable concentrations of hydrogen peroxide are in the range of 1 % to 20% by weight, preferably in the range of 2% to 15% by weight, more preferably in the range of 3% to 12% by weight, calculated to the total weight of the optional composition C.
[0042] It is further preferred that the optional composition is aqueous, with the term ‘aqueous’ having the same meaning as defined above for the compositions A and B.
[0043] Method for treating hair
[0044] The present invention is also directed to a method for treating hair comprising the following steps: i) applying to hair the composition A as defined above and leaving it onto hair for a time period of 1 to 120 min, or ii) mixing the compositions A and C as defined above to yield a ready-to-use composition having a pH in the range of 7 to 12 and leaving it onto hair for a time period of 1 to 120 min, then iii) rinsing-off the hair and optionally drying the hair, then iv) applying to hair the composition B as defined above and leaving it onto hair for a time period of 1 to 60 min, then v) optionally drying the hair, then vi) applying heat to hair at a temperature in the range of 60°C to 230°C.
[0045] Preferably, the time period for step i) or the ready-to-use composition for step ii) is in the range of 2 min to 90 min, more preferably in the range of 5 min to 60 min, still more preferably in the range of 10 min to 45 min.
[0046] Preferably, the time period for step iv) is in the range of 2 min to 45 min, more preferably in the range of 5 min to 40 min.
[0047] Preferably, from the viewpoint of durability of the wash fastness improvement, the hair is dried in step v).
[0048] Furthermore, preferably the temperature range in step vi) is from 80°C to 220°C, more preferably in the range of 120°C to 210°C. From the viewpoint of user A- 17 / 24 convenience, it is preferred that heat is applied to the hair with a hot tool, more preferably with a hair iron, still more preferably with a flatiron.
[0049] A- 17 / 24 XAMPLES able 1 - Compositions A and B
[0050] A- 17 / 24 able 2 - Compositions A and B
[0051] A- 17 / 24 able 3 - Compositions A and B
[0052] A- 17 / 24
[0053] Methods
[0054] For the experiments in tables 1 to 3, the compositions A were mixed with an oxidative composition C comprising 2% by weight of hydrogen peroxide and having a pH of 2.5, yielding a ready-to-use hair dyeing composition having a pH of 9.5. 1 g of the ready-to-use hair dyeing composition was applied to Chinese White Hair streaks (2 g) and left for 30 min at 40°C. The ready-to-use composition was then rinsed-off with water and the hair streaks were blow-dried.
[0055] In a second step, 0.5 g of the compositions B were applied to the dyed hair streaks, left on the hair streaks for 30 min, and then the hair streaks were blow-dried without rinsing-off. The hair streaks were then treated with 3 strokes of a flatiron set to 170°C. Each stroke lasted about 5 s.
[0056] L*i, a*i, b*i values of the dyed hair streaks were measured with a Datacolor 45 spectrometer.
[0057] The hair streaks were then immersed in a shaking bath comprising 5% by weight of sodium laureth sulfate for 20 min at 40°C, rinsed-off with water, and blow-dried. L*2, a*2, b*2 (1x washed) values were measured with a Datacolor 45 spectrometer. AE* was calculated as follows:
[0058] ^ fresh-lx washed
Claims
Claims1 . A hair treatment kit-of-parts comprising:- a composition A comprising one or more hair dye(s),- a composition B comprising: a) one or more dihydroxy phenolic compound according to general structurewherein R1is a straight or branched, saturated or unsaturated C2 to Ce alkyl chain, preferably a C2 to C4 alkyl chain, the alkyl chain being substituted with one or more hydroxyl, carboxyl, and / or amino groups, and more preferably R1is selected from *CH2-CH2-OH, *CH-CH-COOH, H2-CH2-NH2, H2N-*CH-CH2-COOH, HO-*CH-CH2- NH2, HO- H-CH2-NH-CH3, HO-*CH-COOH, HO-*CH-CH2OH, b) one or more polymers comprising a functional group having one or more reactive nucleophilic nitrogen(s),- an optional composition C having a pH in the range of 1 to 6 and comprising hydrogen peroxide.
2. The kit according to claim 1 characterized in that the one or more hair dyes of the composition A are oxidative hair dye(s), preferably said one or more oxidative hair dye(s) are one or more o-phenylenediamines, m-phenylenediamines, p- phenylenediamines, p-toluene-diamine, resorcinols, m-aminophenols, pyridines, naphthols, and / or their salt(s), and / or their mixtures, preferably said one or more oxidative hair dye(s) are p-phenylenediamine, 2-methoxy-methyl-p- phenylenediamine, p-toluene-diamine, hydroxyethyl-p-phenylene-diamine, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-3-hydroxypyridine, 5-amino-6-chloro- o-cresol, 2,6-dihydroxy-3,4-dimethyl-pyridine, 2,6-dimethoxy-3,5-pyridine-diamine HCI, 5-amino-2,6-dimethoxy-3-hydroxypyridine, 6-methoxy-2-methylamino-3- aminopyridine, 2,3-diamino-6-methoxy-pyridine, 2,6-diaminopyridine, 1 ,3-bis(2,4- diamino-phenoxy)propane, and / or their salt(s), and / or their mixture(s), morepreferably the oxidative hair dyes is / are 2-methoxy-methyl-p-phenylenediamine, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-3-hydroxypyridine, 5- amino-6-chloro-o-cresol, 2,6-dihydroxy-3,4-dimethyl-pyridine, 2,6-dimethoxy-3,5- pyridine-diamine HCI, 5-amino-2,6-dimethoxy-3-hydroxypyridine, 6-methoxy-2- methylamino-3-aminopyridine, 2,3-diamino-6-methoxy-pyridine, 2,6-diaminopyridine, 1 ,3-bis(2,4-diamino-phenoxy)propane, and / or their salt(s), and / or their mixture(s).
3. The kit according to any of the claims 1 and / or 2 characterized in that the one or more hair dye(s) of the composition A are hair direct dye(s), preferably said hair direct dye(s) are Acid Yellow 1 , Acid Yellow 3, Acid Yellow 9, Acid Yellow 17, Acid Yellow 23, Acid Yellow 36, Acid Yellow 121 , Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 11 , Acid Orange 15, Acid Orange 20, Acid Orange 24, Acid Red 14, Acid Red, Acid Red 27, Acid Red 33, Acid Red 35, Acid Red 51 , Acid Red 52, Acid Red 73, Acid Red 87, Acid Red 92, Acid Red 95, Acid Red 184, Acid Red 195, Acid Violet 49, Acid Violet 50, Acid Blue 1 , Acid Blue 3, Acid Blue 7, Acid Blue 104, Acid Blue 9, Acid Blue 62, Acid Blue 74, Acid Blue 80, Acid Green 3, Acid Green 5, Acid Green 9, Acid Green 22, Acid Green 25, Acid Green 50, Acid Black 1 , Acid Black 52, Food Yellow 8, Food Blue 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11 , D&C Red 21 , D&C Red 27, D&C Red 33, D&C Violet 2 and / or D&C Brown 1 , Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41 , Basic Blue 47, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Green 1 , Basic Green 4, Basic Orange 1 , Basic Orange 2, Basic Orange 31 , Basic Red 1 , Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 51 , Basic Red 76, Basic Red 118, Basic Violet 1 , Basic Violet 3, Basic Violet 4, Basic Violet 10, Basic Violet 11 :1 , Basic Violet 14, Basic Violet 16, Basic Yellow 11 , Basic Yellow 28, Basic Yellow 57, Basic Yellow 87, HC Blue No. 2, HC Blue No. 5, HC Blue No. 6, HC Blue No. 9, HC Blue No. 10, HC Blue No. 11 , HC Blue No. 12, HC Blue No. 13, HC Blue No. 15, HC Blue 18, HC Orange No. 1 , HC Orange No. 2, HC Orange No. 3, HC Red No. 1 , HC Red No. 3, HC Red No. 7, HC Red No. 10, HC Red No. 11 , HC Red No. 13, HC Red No. 14, HC Red 18, HC Violet No. 1 , HC Violet No.2, HC Yellow No. 2, HC Yellow No. 4, HC Yellow No. 5, HC Yellow No. 6, HC Yellow No. 9, HC Yellow No. 10, HC Yellow No. 11 , HC Yellow No. 12, HC Yellow No. 13, HC Yellow No. 14, HC Yellow No. 15, HC Yellow 16, Disperse Black 9, Disperse Blue 1 , Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, DisperseRed 11 , Disperse Red 15, Disperse Red 17, Disperse Violet 1 , Disperse Violet 4, Disperse Violet 15, and / or their salt(s), and / or their mixtures, preferably said hair direct dye(s) of composition A are HC Blue 18, HC Red 18, HC Yellow 16, and / or their salt(s), and / or their mixtures.
4. The kit according to any of the preceding claims characterized in that the total concentration of the one or more hair dye(s) in the composition A is in the range of 0.1 % to 50% by weight, preferably in the range of 0.25% to 30% by weight, furthermore preferably in the range of 0.5% to 20% by weight, still more preferably in the range of 1 % to 10% by weight, calculated to the total weight of composition A.
5. The kit according to any of the preceding claims characterized in that the compositions A and / or B further comprise one or more alkalizing agent(s), preferably said alkalizing agent(s) are alkali metal hydroxides or alkaline earth hydroxides, ammonia and / or its salt(s), alkyl and / or alkanolamines according to the general structurewherein R2, R3, R4 are the same or different from H, and R2, R3, R4 are selected from Ci to C4, C3 to C4 unsaturated alkyl, C3 to C4 branched alkyl, Ci to C4 hydroxyl alkyl, C3 to C4 unsaturated hydroxyl alkyl, C3 to C4 branched hydroxyl alkyl, with the condition that at least one of R2, R3, or R4 is different from H, and / or their mixtures, more preferably said alkyl or alkanolamines is / are monoethanolamine, diethanolamine, triethanolamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, tris-(hydroxymethyl)-aminomethane, and 2-aminomethyl propanol, and / or their mixtures, and / or their salt(s), most preferably said alkalizing agent sodium or potassium hydroxide, ammonia, monoethanolamine, and further preferably the total concentration of one or more alkalizing agents in the compositions A and / or B is in the range of 0.1 % to 50% by weight, preferably in the range 0.5% to 45% by weight, morepreferably in the range of 1 % to 40% by weight, calculated to the total weight of each of the compositions A and / or B.
6. The kit according to any of the preceding claims characterized in that the one or more dihydroxy phenolic compound of composition B as compound(s) according to group a) are selected from hydroxytyrosol, caffeic acid, dopamine, dihydroxyphenylalanine, noradrenaline, adrenaline, dihydroxymandelic acid and dihydroxyphenylglycol, and / or their mixtures, more preferably it is hydroxytyrosol.
7. The kit according to any of the preceding claims characterized in that the total concentration of the one or more dihydroxy phenolic compound in composition B is in the range of 0.01 % to 7.5% by weight, preferably in the range of 0.1 % to 5% by weight, more preferably in the range of 0.25% to 5% by weight, calculated to the total weight of composition B.
8. The kit according to any of the preceding claims characterized in that the functional group of polymers comprising reactive nucleophilic nitrogen(s) as compound(s) according to group b) of composition B is one or more primary amino groups, one or more secondary amino groups, one or more tertiary amino groups, and / or one or more imidazole groups, preferably said polymers according to group b) are selected from Polyquaternium-68, Gluconamido amodimethicone, Polysilicone-29, Amodimethicone, Chitosan, and / or their salt(s), and / or their mixtures.
9. The kit according to any of the preceding claims characterized in that the total concentration of the polymers according to group b) of composition B is in the range of 0.01 % to 10% by weight, preferably 0.1 % to 6% by weight, more preferably 0.5% to 5% by weight, still more preferably 1 % to 5% by weight, calculated to the total weight of the composition B.
10. The kit according to any of the preceding claims characterized in that the composition B further comprises one or more oxidizing agents as compound(s) according to group c), preferably said compound(s) are selected from sodium persulfate, ammonium persulfate, potassium persulfate, potassium dichromate, potassium chlorate, peroxydisulfuric acid, peroxymonosulfuric acid, melanin peroxide, sodium perborate, sodium tetraborate, and / or their mixtures.
11. The kit according to claim 10 characterized in that the total concentration of the oxidizing agents as compound(s) according to group c) in composition B is in the range17of 0.01 % to 7.5% by weight, more preferably in the range of 0.1 % to 5% by weight, still more preferably in the range of 0.5% to 3% by weight, calculated to the total weight of the composition B.
12. The kit according to any of the preceding claims characterized in that the composition B is an aqueous composition and comprises water at 50% by weight or more, preferably at 60% by weight or more, more preferably at 75% by weight or more, calculated to the total weight of composition B.
13. The kit according to any of the preceding claims characterized in that the pH of the composition B is in the range of 2 to 13, more preferably 2.5 to 11 , still more preferably in the range of 3.0 to 10.0.
14. The kit according to any of the preceding claims characterized in that the compositions A and B are separate compositions and are separately applied onto hair.
15. A method for treating hair comprising the following steps: i) applying to hair the composition A as defined in any of the claims 1 to 14 and leaving it onto hair for a time period of 1 to 120 min, or ii) mixing the compositions A and C as defined in any of the claims 1 to 14 to yield a ready-to-use composition having a pH in the range of 7 to 12 and leaving it onto hair for a time period of 1 to 120 min, then iii) rinsing-off the hair and optionally drying the hair, then iv) applying to hair the composition B as defined in any of the claims 1 to 14 and leaving it onto hair for a time period of 1 to 60 min, then v) optionally drying the hair, then vi) applying heat to hair at a temperature in the range of 60°C to 230°C.