A fast-coloring hair dye and its preparation method

Abstract

The present invention discloses a fast-coloring hair dye and a preparation method thereof. A fast-coloring hair dye is a two-component oxidative hair dye, including a coloring agent and a developer; the coloring agent contains oxidation dyes, an alkali agent, a co-dyeing agent, and a hair conditioning agent. Among them, the alkali agent includes but is not limited to ammonium hydroxide and diethanolamine, the co-dyeing agent is a compound of alginate, potassium iodide, and hydrogen iodide, and the hair conditioning agent is a compound of extract of Coccosphere, extract of oyster, and hydrolyzed silk protein; the developer contains a hydrogen peroxide solution. The preparation method of a fast-coloring hair dye lies in separately preparing the coloring agent and the developer to obtain the fast-coloring hair dye. The fast-coloring hair dye of the present application has the dual effects of fast hair dyeing and reducing the damage of the hair dye to the hair. After using the fast-coloring hair dye of the present application for hair dyeing, the hair can retain the color for a long time and remain bright and smooth.

Description

Technical Field

[0001] The present invention relates to the technical field of hair dyes, and in particular to a fast-coloring hair dye and a preparation method thereof. Background Art

[0002] Hair dyes are a type of special-purpose cosmetics. With the development of the economy, they are increasingly favored by consumers and have great market potential.

[0003] Currently, the mainstream permanent hair dye products on the market are oxidative hair dyes. Oxidative hair dyes penetrate into the hair cortex through dye intermediates and couplers and then undergo chemical reactions to form dye molecules in the hair fibers, thereby achieving hair coloring. The hair dyeing mechanism of oxidative hair dyes determines that they must stay on the hair for a period of time to undergo sufficient oxidation and coupling reactions before they can have a good coloring effect. Currently, the common oxidative hair dyes on the market generally act on the hair for 30 - 60 minutes, and some even require heating reactions to promote the full reaction of the oxidative hair dyes.

[0004] As is well known, oxidative hair dyes contain various harmful substances, such as aromatic amines, aminophenols, and hydrogen peroxide. These harmful substances can easily enter the human body through the scalp and cause harm to the body. The longer the hair dye stays on the hair, the greater the probability of harmful substances entering the body and the greater the threat to health. Secondly, the long stay time of the hair dye on the hair also greatly hinders the free activities of the hair dyeing person. Especially for those with long hair, they need to keep their heads upright all the time to prevent rubbing off the hair dye on the hair, bringing an unpleasant hair dyeing experience to the hair dyeing person.

[0005] In view of the above-related technologies, the applicant believes that the hair dyeing time of the existing hair dyes is relatively long. Therefore, there is still room for improvement in hair dyes. Summary of the Invention

[0006] In order to improve the defect of too long hair dyeing time of hair dyes, the present application provides a fast-coloring hair dye and a preparation method thereof. The fast-coloring hair dye provided by the present application can prompt the oxidative dyes, namely intermediates and couplers, to penetrate into the cortex of the hair faster and more to undergo oxidative coupling reactions to form dye macromolecules, thereby achieving fast hair coloring. At the same time, the specially formulated hair conditioner of the present application can re-smooth the hair cuticles that are opened during the hair dyeing process, minimizing the damage to the hair to the greatest extent while ensuring the hair dyeing speed, so that the dyed hair can have long-lasting color retention, be bright and smooth.

[0007] In the first aspect, a fast-coloring hair dye provided by the present application adopts the following technical solution:

[0008] A fast-coloring hair dye, the fast-coloring hair dye is a two-component oxidative hair dye, including a coloring agent and a developer; the coloring agent contains an oxidative dye, an alkali agent, a co-dyeing agent, and a hair conditioner,

[0009] wherein, the mass percentage of the oxidative dye in the coloring agent is 2% - 5%, the mass percentage of the alkali agent in the coloring agent is 1% - 4%, the mass percentage of the co-dyeing agent in the coloring agent is 1% - 4%, and the mass percentage of the hair conditioner in the coloring agent is 2% - 6%,

[0010] the alkali agent includes but is not limited to ammonium hydroxide and diethanolamine,

[0011] the co-dyeing agent is a compound prepared by mixing alginate, potassium iodide, and hydrogen iodide in a mass ratio of (10 - 20):(5 - 7):(5 - 7), and the hair conditioner is a compound prepared by mixing extract of Fucus vesiculosus, extract of Ostrea gigas, and hydrolyzed silk protein in a mass ratio of (1 - 5):(4 - 7):(10 - 15);

[0012] the developer contains a hydrogen peroxide solution with a mass percentage concentration of 3% - 12%, and the mass percentage of the hydrogen peroxide solution with a mass percentage concentration of 3% - 12% in the developer is 3% - 9%.

[0013] In the above technical solution, the alkali agent is used to quickly open the hair cuticle, and the co-dyeing agent prepared by mixing alginate, potassium iodide, and hydrogen iodide in a mass ratio of (10 - 20):(5 - 7):(5 - 7) is used to promote the more rapid penetration of the oxidative dye into the cortex to undergo an oxidative coupling reaction with hydrogen peroxide to form a coloring macromolecule and thus develop color. Moreover, the reaction between iodide and the oxidant generates heat, which further promotes the color development of the oxidative dye, thereby achieving the purpose of fast coloring. The coloring time of the fast-coloring hair dye of the present application is only 5 - 10 minutes.

[0014] At the same time, the hair conditioner prepared by mixing extract of Fucus vesiculosus, extract of Ostrea gigas, and hydrolyzed silk protein in a mass ratio of (1 - 5):(4 - 7):(10 - 15) used in the present application has the effect of re-smoothing the opened hair cuticle, which not only inhibits the detachment of the coloring macromolecule from the opened hair cuticle from the hair, but also reduces the damage to the hair caused by hair dyeing.

[0015] The extract of Chlorella ellipsoidea and the extract of oyster in this application contain iodides, which can react with oxidants by themselves to generate heat. Together with the heat generation of the co-dyeing agent, it further promotes the color development reaction of oxidative dyes. Secondly, the heat state better promotes the interaction between the extract of Chlorella ellipsoidea, the extract of oyster and hydrolyzed silk protein. With the film-forming property of alginate, a firm water-locking diaphragm is formed on the surface of the hair, locking the hair moisture while smoothing the hair cuticles, preventing the dyed hair from becoming dry and brittle, reducing the damage of the hair after dyeing and helping the hair resist external damage, ensuring good hair quality.

[0016] Preferably, the dyeing agent comprises the following components in mass percentages:

[0017] Oxidative dye: 2% - 5%;

[0018] Alkali agent: 1% - 4%;

[0019] Co-dyeing agent: 1% - 4%;

[0020] Hair conditioner: 2% - 6%;

[0021] Thickener a: 4% - 10%;

[0022] Surfactant a: 2% - 8%;

[0023] Humectant a: 4% - 6%;

[0024] Oil: 1% - 4%;

[0025] Chelating agent a: 1% - 4%;

[0026] Antioxidant: 0.2% - 0.5%;

[0027] The balance is water.

[0028] The components of the dyeing agent configured by the above technical solution can be better fused, the prepared dyeing agent has higher stability, and the components cooperate to promote better dyeing effect.

[0029] Preferably, the color developer comprises the following components in mass percentages:

[0030] Hydrogen peroxide solution with a mass concentration of 3% - 12%: 3% - 9%;

[0031] Stabilizer: 0.01% - 1%;

[0032] Thickener b: 2% - 3%;

[0033] Surfactant b: 2% - 8%;

[0034] Humectant b: 2% - 4%;

[0035] Grease b: 1% - 4%;

[0036] Chelating agent b: 1% - 4%;

[0037] Buffer: 0.01% - 1%;

[0038] The balance is water.

[0039] Each component of the color developer configured by the above technical solution can be better fused, and the system of the color developer is more stable, ensuring that the dyeing effect of the hair dye can be better achieved.

[0040] Preferably, the grease a is prepared by compounding isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil according to the mass ratio of (20 - 30):(2 - 5):(2 - 5).

[0041] In the above technical solution, the grease a prepared by compounding isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil according to the above special ratio has better hair care effect, can interact with the hair conditioner, further consolidate the water-locking diaphragm, and the active substances therein can be adsorbed on the water-locking diaphragm to further nourish the dyed hair, further inhibit the detachment of the dyeing macromolecules, and further reduce the damage of the dyed hair.

[0042] Preferably, the surfactant a includes PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30; the surfactant b includes PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30.

[0043] In the above technical solution, the specially prepared surfactant of the present application can better fuse each component, ensure the system stability of the hair dye of the present application during transportation and storage, and at the same time enable the color developer and the dyeing agent of the present application to be quickly fused during use, ensuring that the present application has a good hair dyeing effect.

[0044] Preferably, the stabilizer is one or more of sodium pyrophosphate, sodium stannate, and hydroxyquinoline sulfate.

[0045] In the above technical solution, selecting the above stabilizer can improve the stability of the hydrogen peroxide solution with a mass percentage concentration of 3% - 12% in the color developer system, which not only ensures that the color developer can have a good chemical balance during transportation and storage, but also ensures that the color developer will not have a poor dyeing effect due to the excessive release of oxygen molecules in the hydrogen peroxide solution during use.

[0046] Preferably, the humectant a is prepared by compounding glycerol, propylene glycol, polyethylene glycol, isopropyl alcohol, inulin, and aloe polysaccharide according to the mass ratio of (15 - 20):(15 - 20):(15 - 20):(15 - 20):(1 - 2):(1 - 2).

[0047] In the above technical solution, since propylene glycol, polyethylene glycol, and isopropyl alcohol have a penetration-enhancing effect, they can further promote the rapid penetration and coloring of the hair dye into the hair. Moreover, the specially formulated humectant a in the above ratio can further reduce the damage to the hair after dyeing and effectively soothe the dry scalp caused by the attachment of the hair dye, thus giving the user a good experience.

[0048] Preferably, the hair conditioner is a compound prepared by mixing extracts of Chlorella vulgaris, oyster extracts, and hydrolyzed silk protein in a mass ratio of (3 - 4):(5 - 5.5):(13 - 14).

[0049] The hair conditioner compounded in the above ratio can better cooperate with the film-forming property of alginate, form an excellent water-locking diaphragm on the hair surface, quickly smooth the hair cuticles, and keep the hair moisturized for a long time, avoiding dryness and fragility of the hair after dyeing, and further helping the hair resist external damage.

[0050] Preferably, the oxidation dye can be p-phenylenediamine, p-aminophenol, toluene-2,5-diamine sulfate, m-aminophenol, 2-chloro-p-phenylenediamine sulfate, resorcinol, 2-nitro-p-phenylenediamine, 4-amino-2-hydroxytoluene, 2-methylresorcinol, 6-aminomesitol, 4-amino-3-nitrophenol, 2,4-diaminophenoxyethanol hydrochloride, 4-aminomesitol, 2-amino-3-hydroxypyridine, p-methylaminophenol sulfate, 2,6-diaminopyridine, 6-hydroxyindole, 4-chlororesorcinol, 2,7-naphthalenediol, N-phenyl-p-phenylenediamine, 1,5-naphthalenediol and 1-naphthol, 4-nitro-o-phenylenediamine, p-nitro-m-phenylenediamine, etc.

[0051] Preferably, the alkali agent can also include monoethanolamine, sodium hydroxide, potassium hydroxide, etc.

[0052] Preferably, the thickener a can be cetearyl alcohol, cetyl alcohol, stearyl alcohol, etc., and the thickener b can be cetearyl alcohol, cetyl alcohol, stearyl alcohol, etc.

[0053] Preferably, the antioxidant can be isoascorbic acid, ascorbic acid, sodium isoascorbate, sodium sulfite, sodium metabisulfite, etc.

[0054] Preferably, the buffer can be disodium hydrogen phosphate, disodium dihydrogen phosphate, sodium dihydrogen phosphate, etc.

[0055] Preferably, the chelating agent a can be pentasodium pentetate, hydroxyethanediphosphonic acid, tetrasodium hydroxyethanediphosphonate, EDTA-2Na, EDTA-3Na, EDTA-4Na, etc., and the chelating agent b can be pentasodium pentetate, hydroxyethanediphosphonic acid, tetrasodium hydroxyethanediphosphonate, EDTA-2Na, EDTA-3Na, EDTA-4Na, etc.

[0056] In a second aspect, the present application provides a preparation method of a fast-coloring hair dye, which adopts the following technical solutions:

[0057] A preparation method of a fast-coloring hair dye includes a preparation method of a coloring agent, and the preparation method of the coloring agent is as follows: Step (1): Dissolve and mix thickener a, surfactant a, and oil a evenly at 80-85 °C;

[0058] Step (2): Add water, humectant a, antioxidant a, and chelating agent a to the product obtained in step (1), and emulsify and homogenize for 20-30 min;

[0059] Step (3): Cool the product obtained in step (2) to 40-45 °C, then add oxidation dye, alkali agent, co-dyeing agent, and hair conditioner, and stir evenly to obtain the coloring agent.

[0060] The components of the coloring agent prepared by adopting the above technical solutions are stable, and it has excellent comprehensive hair dyeing effects.

[0061] Preferably, a preparation method of a fast-coloring hair dye is characterized by including a preparation method of a developer, and the preparation method of the developer is as follows:

[0062] Step 1: Dissolve and mix thickener b, surfactant b, and oil b evenly at 80-85 °C;

[0063] Step 2: Add water, humectant b, and chelating agent b to the product obtained in step 1, and emulsify and homogenize for 20-30 min;

[0064] Step 3: Cool the product obtained in step 2 to 40-45 °C, then add a hydrogen peroxide solution with a mass percentage concentration of 3%-12%, a stabilizer, and a buffer, and stir evenly to obtain the developer.

[0065] The developer prepared by adopting the above technical solutions is more stable, and it can cooperate better with the coloring agent to play a better hair dyeing role.

[0066] In a third aspect, the present application provides a use method of a fast-coloring hair dye, which adopts the following technical solutions:

[0067] A use method of a fast-coloring hair dye is to mix the coloring agent and the developer evenly according to a mass ratio of 1:1, and evenly apply it to the hair and wait for 5-10 min.

[0068] In summary, the present application includes at least one of the following beneficial technical effects:

[0069] 1. This application uses an alkaline agent to quickly open the hair cuticle, and a co-dyeing agent composed of alginate, potassium iodide, and hydrogen iodide in a mass ratio of (10-20):(5-7):(5-7) is used to promote the more rapid penetration of the oxidation dye into the cortex layer to undergo an oxidation coupling reaction with hydrogen peroxide to form a dyeing macromolecule and thus develop color. Moreover, the reaction of iodide with the oxidizing agent has a heating effect, which further promotes the color development of the oxidation dye, thereby achieving the purpose of rapid coloring. The coloring time of the rapid coloring hair dye of this application is only 5-10 minutes.

[0070] 2. The hair conditioning agent prepared by this application by compounding extracts of Ectocarpus siliculosus, oyster extracts, and hydrolyzed silk protein in a mass ratio of (1-5):(4-7):(10-15) has the effect of re-smoothing the opened hair cuticles, which not only inhibits the detachment of the dyeing macromolecule from the opened hair cuticles but also reduces the damage to the hair caused by hair dyeing.

[0071] 3. The hair conditioning agent with a special ratio of this application can cooperate with the film-forming property of alginate to form an excellent water-locking diaphragm on the hair surface, quickly smooth the hair cuticles, and permanently keep the hair moisturized, avoiding dryness and fragility of the hair after dyeing and further helping the hair resist external damage. Detailed implementation manners

[0072] To better illustrate the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0073] All raw materials and reagents in the following examples and comparative examples without special instructions are raw materials and reagents on the conventional market, and all meet the requirements of cosmetic raw materials.

[0074] Example 1

[0075] A hair dye, including a dyeing agent and a developing agent.

[0076] First, the dyeing agent includes 68.5 g of water, 5 g of oxidation dye, 4 g of alkaline agent, 1 g of co-dyeing agent, 2 g of hair conditioning agent, 4 g of thickener a, 8 g of surfactant a, 4 g of humectant a, 1 g of oil a, 4 g of chelating agent a, and 0.5 g of antioxidant.

[0077] Among them, the oxidation dye is p-phenylenediamine.

[0078] Among them, the alkaline agent is a compound prepared by compounding ammonium hydroxide and diethanolamine in a mass ratio of 2:1.

[0079] Among them, the co-dyeing agent is a compound prepared by compounding alginate, potassium iodide, and hydrogen iodide in a mass ratio of 10:5:5.

[0080] Among them, the hair conditioning agent is compounded from extracts of Ectocarpus, extracts of oyster, and hydrolyzed silk protein in a mass ratio of 1:4:10.

[0081] Among them, thickener a is cetearyl alcohol.

[0082] Among them, surfactant a is compounded from PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30 in a mass ratio of 1:1:1.

[0083] Among them, humectant a is compounded from glycerol, propylene glycol, polyethylene glycol, and isopropanol in a mass ratio of 1:1:1:1.

[0084] Among them, oil a is compounded from isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil in a mass ratio of 20:2:2.

[0085] Among them, chelating agent a is EDTA-2Na.

[0086] Among them, the antioxidant is ascorbic acid.

[0087] Among them, the preparation method of the dye is as follows:

[0088] Step (1): Dissolve and mix thickener a, surfactant a, and oil a at 80°C evenly.

[0089] Step (2): Add water, humectant a, antioxidant a, and chelating agent a to the product obtained in step (1), and emulsify and homogenize for 20 min.

[0090] Step (3): Cool the product obtained in step (2) to 40°C, then add oxidation dye, alkali agent, auxiliary dye, and hair conditioning agent, and stir evenly to obtain the dye.

[0091] In the second aspect, the developer includes 77.94 g of water, 9 g of 3% hydrogen peroxide solution by mass concentration, 0.01 g of stabilizer, 3 g of thickener b, 2 g of surfactant b, 4 g of humectant b, 1 g of oil b, 3 g of chelating agent b, and 0.05 g of buffer.

[0092] Among them, the stabilizer is sodium pyrophosphate.

[0093] Among them, thickener b is cetearyl alcohol.

[0094] Among them, surfactant b is compounded from PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30 in a mass ratio of 1:1:1.

[0095] Among them, humectant b is compounded from glycerol and propylene glycol in a mass ratio of 1:1.

[0096] Among them, oil b is coconut oil.

[0097] Among them, chelating agent b is EDTA-2Na.

[0098] Among them, the buffer is sodium dihydrogen phosphate.

[0099] Among them, the preparation method of the chromogenic agent includes the following steps:

[0100] Step 1: Dissolve and mix thickener b, surfactant b, and oil b evenly at 80°C;

[0101] Step 2: Add water, humectant b, and chelating agent b to the product obtained in Step 1, and emulsify and homogenize for 20 min;

[0102] Step 3: Cool the product obtained in Step 2 to 40°C, then add 3% hydrogen peroxide solution by mass concentration, stabilizer, and buffer, and stir evenly to obtain the chromogenic agent.

[0103] Example 2

[0104] A hair dye, different from Example 1,

[0105] First, the dyeing agent includes 68.2 g of water, 3.5 g of oxidation dye, 1 g of alkali agent, 4 g of co-dyeing agent, 6 g of hair conditioner, 7 g of thickener a, 2 g of surfactant a, 6 g of humectant a, 2 g of oil a, 2 g of chelating agent a, and 0.3 g of antioxidant.

[0106] The co-dyeing agent is a compound prepared from alginate, potassium iodide, and hydrogen iodide according to a mass ratio of 20:7:7.

[0107] The hair conditioner is a compound prepared from extract of Ectocarpus siliculosus, extract of oyster, and hydrolyzed silk protein according to a mass ratio of 5:7:15.

[0108] Oil a is a compound prepared from isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil according to a mass ratio of 30:5:5.

[0109] The preparation method of the dyeing agent is as follows:

[0110] Step (1): Dissolve and mix thickener a, surfactant a, and oil a evenly at 85°C;

[0111] Step (2): Add water, humectant a, antioxidant a, and chelating agent a to the product obtained in Step (1), and emulsify and homogenize for 30 min;

[0112] Step (3): Cool the product obtained in Step (2) to 45°C, then add oxidation dye, alkali agent, co-dyeing agent, and hair conditioner, and stir evenly to obtain the dyeing agent.

[0113] Second aspect, the developer includes 77.95 g of water, 7 g of 3% hydrogen peroxide solution by mass concentration, 0.05 g of stabilizer, 2 g of thickener b, 6 g of surfactant b, 3 g of humectant b, 2 g of oil b, 1 g of chelating agent b, and 1 g of buffer.

[0114] The preparation method of the developer includes the following steps:

[0115] Step 1: Dissolve and mix thickener b, surfactant b, and oil b uniformly at 85°C;

[0116] Step 2: Add water, humectant b, and chelating agent b to the product obtained in Step 1, and emulsify and homogenize for 30 min;

[0117] Step 3: Cool the product obtained in Step 2 to 45°C, then add 3% hydrogen peroxide solution by mass concentration, stabilizer, and buffer, and stir evenly to obtain the developer.

[0118] Example 3

[0119] A hair dye, different from Example 1,

[0120] First aspect, the dyeing agent includes 67.8 g of water, 2 g of oxidation dye, 3 g of alkali agent, 2 g of co-dyeing agent, 3 g of hair conditioner, 10 g of thickener a, 4 g of surfactant a, 5 g of humectant a, 4 g of oil a, 1 g of chelating agent a, and 0.2 g of antioxidant.

[0121] The hair conditioner is a compound prepared from extracts of Coccosphere, oyster extract, and hydrolyzed silk protein in a mass ratio of 3:5:13.

[0122] Second aspect, the developer includes 76.99 g of water, 3 g of 3% hydrogen peroxide solution by mass concentration, 1 g of stabilizer, 1 g of thickener b, 8 g of surfactant b, 2 g of humectant b, 4 g of oil b, 4 g of chelating agent b, and 0.01 g of buffer.

[0123] Example 4

[0124] A hair dye, different from Example 3, the hair conditioner is a compound prepared from extracts of Coccosphere, oyster extract, and hydrolyzed silk protein in a mass ratio of 4:5.5:14.

[0125] Example 5

[0126] A hair dye, different from Example 3, oil a is a compound prepared from isopropyl palmitate, coconut oil, and Litsea cubeba fruit oil in a mass ratio of 30:5:5.

[0127] Example 6

[0128] A hair dye, different from Example 3, wherein the oil a is a compound prepared by mixing isopropyl palmitate, macadamia seed oil, and jojoba seed oil in a mass ratio of 30:5:5.

[0129] Example 7

[0130] A hair dye, different from Example 3, wherein the oil a is a compound prepared by mixing coconut oil, macadamia seed oil, and litsea cubeba fruit oil in a mass ratio of 30:5:5.

[0131] Example 8

[0132] A hair dye, different from Example 3, wherein the humectant a is a compound prepared by mixing glycerol, propylene glycol, polyethylene glycol, isopropanol, inulin, and aloe polysaccharide in a mass ratio of 20:20:20:20:2:2.

[0133] Comparative Example 1

[0134] A hair dye, different from Example 3, which does not contain a hair conditioning agent.

[0135] Comparative Example 2

[0136] A hair dye, different from Example 3, wherein the extract of microcoleus chthonoplastes is replaced with an equal amount of oyster extract.

[0137] Comparative Example 3

[0138] A hair dye, different from Example 3, wherein the oyster extract is replaced with an equal amount of microcoleus chthonoplastes extract.

[0139] Comparative Example 4

[0140] A hair dye, different from Example 3, wherein hydrolyzed silk protein is replaced with an equal amount of hydrolyzed keratin.

[0141] Comparative Example 5

[0142] A hair dye, different from Example 3, wherein alginate is replaced with an equal amount of potassium iodide.

[0143] Performance Detection

[0144] Samples: The hair dyes of the above examples and comparative examples.

[0145] Test Method:

[0146] Cut 14 hair bundles of the same size and 30 cm in length from the top of the head of a white-haired person with natural white hair. One hair bundle is not treated and used as a control group, and the other 13 hair bundles are used as test groups.

[0147] 1. Dyeing time: The hair dyes of the above-mentioned examples and comparative examples were used to color the test groups respectively at room temperature of 25°C. Timing started from the application of the hair dye and ended when all white hairs turned black. The dyeing time (min) was recorded. The test results are shown in Table 1.

[0148] 2. Tensile strength: The tensile strength value (N) of the hair was tested by extracting hair from the control group (using an HVC-SX push-pull force gauge purchased from Shenzhen Hongweicheng Measurement and Control Equipment Co., Ltd.), and the compressive strength value of the hair in the test group after dyeing was also tested. The closer the compressive strength value of the tester's hair is to that of the control group, the smaller the hair damage. Each group was tested 10 times, and the average value of the test results was taken. The test results are shown in Table 1.

[0149] 3. Color fastness: The L0, a0, and b0 values of the test group after dyeing and natural air drying were tested using a color difference meter (SC-20 color difference meter purchased from Dongguan Mingzhi Electronics Co., Ltd.). Then, the test group was rubbed with the same shampoo for 1 minute, rinsed with water, and naturally dried, which was regarded as 1 wash. After washing the test group 15 times in the same way, the L1, a1, and b1 values of the test group after washing were tested, and the hair color difference was calculated. The test results are shown in Table 1. The smaller the ΔE, the better the color protection effect.

[0150] 4. 130 volunteers with the need to dye white hair black were evenly divided into 13 groups, with 10 people in each group. The hair dyes of the above-mentioned examples and comparative examples were used respectively, and the scalp feelings and hair effects were evaluated (0 - 100 points).

[0151] Scalp feeling: 80 - 100 points: Good feeling, no tightness, no irritation; 60 - 79 points: General feeling, scalp has a sense of tightness; 0 - 59 points: Poor feeling, strong irritation.

[0152] Hair effect: 80 - 100 points: Good feeling, hair is bright and smooth; 60 - 79 points: General feeling, the hair quality is worse than before dyeing, and the hair quality is slightly dull; 0 - 59 points: Poor feeling, hair is dry.

[0153] The test results are shown in Table 1.

[0154] Table 1:

[0155]

[0156] The above test results show that the hair dyes of Examples 1 - 8 have the effects of fast coloring, reducing hair damage, and long-lasting color protection.

[0157] The difference between Example 3 and Comparative Examples 1-5 is that Comparative Example 1 does not contain a hair conditioning agent, Comparative Examples 2-4 replace the extract of Chlorella sphaerica, the extract of oyster, and hydrolyzed silk protein respectively, and Comparative Example 5 replaces the alginate. The degree of hair damage, color protection effect, and usage experience of Comparative Examples 1-5 are all inferior to those of Example 3, and the dyeing time of Comparative Examples 1-4 is longer than that of Example 3. From this analysis, it can be obtained that the hair conditioning agent prepared by compounding the extract of Chlorella sphaerica, the extract of oyster, and hydrolyzed silk protein in a mass ratio of (1-5):(4-7):(10-15) has the effect of smoothing the opened hair scales again. This not only inhibits the detachment of the dyeing macromolecules from the opened hair scales from the hair, but also reduces the damage of hair dyeing to the hair; while the alginate has film-forming properties, and further synergistic action with the hair conditioning agent can form a firm water-locking diaphragm on the hair surface, further inhibiting the shedding of the dyeing macromolecules from the hair and reducing the damage of hair dyeing to the hair.

[0158] The difference between Examples 3-4 and Examples 1-2 is that the hair conditioning agent in Examples 3-4 is prepared by compounding the extract of Chlorella sphaerica, the extract of oyster, and hydrolyzed silk protein in a mass ratio of (3-4):(5-5.5):(13-14). The comprehensive effects of Examples 3-4 are all superior to those of Examples 1-2 to a certain extent. From this analysis, it can be obtained that the hair conditioning agent with the above special ratio can better cooperate with the film-forming property of the alginate, form an excellent water-locking diaphragm on the hair surface, quickly smooth the hair scales, and keep the hair moisturized persistently, avoiding the dryness and fragility of the hair after dyeing, and further helping the hair resist external damage.

[0159] The difference between Example 3 and Examples 5-7 is that Examples 5-7 replace isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil respectively. The comprehensive effects of Examples 5-7 are lower than those of Example 3 to a certain extent. From this analysis, it can be obtained that the oil a prepared from isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil has particularity. Adding the specially prepared oil a of the present application to the fast-coloring hair dye can interact with the hair conditioning agent to further consolidate the water-locking diaphragm, and the active substances therein can be adsorbed on the water-locking diaphragm to further nourish the hair after dyeing, further inhibit the detachment of the dyeing macromolecules, and further reduce the damage of the hair after dyeing.

[0160] The difference between Example 3 and Example 8 is that the moisturizing agent in Example 8 is a compound of glycerol, propylene glycol, polyethylene glycol, isopropanol, inulin, and aloe polysaccharide. The comprehensive effect of Example 8 is superior to that of Example 3 to a certain extent. From this analysis, it can be obtained that the specially prepared moisturizing agent a can not only further reduce the damage of the hair after dyeing, but also particularly have the effect of effectively soothing the scalp, further bringing a good hair dyeing experience to the user.

[0161] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A fast-coloring hair dye, characterized in that, The rapid coloring hair dye is a two-component oxidative hair dye, including a dyeing agent and a developer; The dyeing agent comprises the following components in mass percentage: oxidation dye: 2% - 5%; alkali agent: 1% - 4%; co-dyeing agent: 1% - 4%; hair conditioner: 2% - 6%; thickener a: 4% - 10%; surfactant a: 2% - 8%; humectant a: 4% - 6%; oil a: 1% - 4%; chelating agent a: 1% - 4%; antioxidant: 0.2% - 0.5%; the balance is water; wherein, the mass percentage of the oxidation dye in the dyeing agent is 2% - 5%, the mass percentage of the alkali agent in the dyeing agent is 1% - 4%, the mass percentage of the co-dyeing agent in the dyeing agent is 1% - 4%, and the mass percentage of the hair conditioner in the dyeing agent is 2% - 6%, The alkali agent includes but is not limited to ammonium hydroxide and diethanolamine, The co-dyeing agent is a compound prepared by compounding alginate, potassium iodide, and hydrogen iodide according to the mass ratio of (10 - 20):(5 - 7):(5 - 7), The hair conditioner is a compound prepared by compounding extract of Fritillaria thunbergii Miq., extract of Ostrea gigas Thunberg, and hydrolyzed silk protein according to the mass ratio of (1 - 5):(4 - 7):(10 - 15); The developer contains a hydrogen peroxide solution with a mass percentage concentration of 3% - 12%, and the mass percentage of the hydrogen peroxide solution with a mass percentage concentration of 3% - 12% in the developer is 3% - 9%.

2. The quick-coloring hair dye according to claim 1, characterized in that, The developer comprises the following components in mass percentage: hydrogen peroxide solution with a mass percentage concentration of 3% - 12%: 3% - 9%; stabilizer: 0.01% - 1%; thickener b: 2% - 3%; surfactant b: 2% - 8%; humectant b: 2% - 4%; oil b: 1% - 4%; chelating agent b: 1% - 4%; buffer: 0.01% - 1%; the balance is water.

3. The quick-coloring hair dye according to claim 2, characterized in that, The oil a is a compound prepared by compounding isopropyl palmitate, macadamia nut oil, and litsea cubeba fruit oil according to the mass ratio of (20 - 30):(2 - 5):(2 - 5).

4. The quick-coloring hair dye according to claim 2, characterized in that, The surfactant a includes PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30; the surfactant b includes PEG-40 hydrogenated castor oil, ceteth-6, and oleth-30.

5. The quick-coloring hair dye according to claim 3, characterized in that, The stabilizer is one or more of sodium pyrophosphate, sodium stannate, and hydroxyquinoline sulfate.

6. The quick-coloring hair dye according to claim 3, wherein, The humectant a is a compound prepared by compounding glycerol, propylene glycol, polyethylene glycol, isopropyl alcohol, inulin, and aloe polysaccharide according to the mass ratio of (15 - 20):(15 - 20):(15 - 20):(15 - 20):(1 - 2):(1 - 2).

7. A fast-coloring hair dye according to any one of claims 1-6, characterized in that, The hair conditioner is a compound prepared by compounding extract of Fritillaria thunbergii Miq., extract of Ostrea gigas Thunberg, and hydrolyzed silk protein according to the mass ratio of (3 - 4):(5 - 5.5):(13 - 14).

8. A method for preparing a fast-coloring hair dye according to any one of claims 1-6, characterized in that, It includes a preparation method of the dyeing agent, and the preparation method of the dyeing agent is as follows: Step (1): Dissolve and mix the thickener a, surfactant a, and oil a at 80 - 85°C until evenly mixed; Step (2): Add water, humectant a, antioxidant a, and chelating agent a to the product obtained in step (1), and emulsify and homogenize for 20 - 30 min; Step (3): Cool the product obtained in step (2) to 40-45 °C, then add oxidation dye, alkali agent, dyeing assistant, and hair conditioner. After stirring evenly, a dyeing agent is obtained.

9. A method for preparing a fast-coloring hair dye according to any one of claims 2-6, characterized in that, A method for preparing a developer, and the method for preparing the developer is as follows: Step 1: Dissolve and mix thickener b, surfactant b, and oil b evenly at 80-85 °C; Step 2: Add water, humectant b, and chelating agent b to the product obtained in step 1, and emulsify and homogenize for 20-30 min; Step 3: Cool the product obtained in step 2 to 40-45 °C, then add a hydrogen peroxide solution with a mass percentage concentration of 3%-12%, a stabilizer, and a buffer. After stirring evenly, a developer is obtained.

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