Hair dyeing composition and preparation method thereof
By using a hair dye composition with Tris and silver sulfate combined with sodium ascorbate or ferrous lactate, existing hair dyes have been solved for the risk of carcinogenic, skin irritation and hair damage, achieving higher safety, stability and dyeing effects.
Patent Information
- Application Number
- CN202311822365.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-06-27
AI Technical Summary
Existing hair dyes have problems such as carcinogenic risk, skin irritation, hair damage, etc., and the color is not strong, so it is easy to decolorize after washing your hair.
Tris is used as a prosolubilizer, combined with silver sulfate, sodium isoascorbate or ferrous lactate as color developer to form a new hair dye composition, which improves the safety and stability of the hair dye by controlling the molar ratio and pH value.
It significantly improves the safety, stability and dyeing effect of hair dye, reduces damage to the skin and hair, has strong color stability and is not easy to decolorize after washing.
Smart Images
Figure CN120204061A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of cosmetics and relates to a hair dyeing composition and a preparation method thereof. Background Art
[0002] Current hair dyes are mainly divided into chemical hair dyes and natural hair dyes. Among them, chemical hair dyes rely on benzene, ammonia water, hydrogen peroxide, and chemical pigments to cover the original color in the hair or fill the pigment voids in white hair. The disadvantage of this method is that benzene has a certain carcinogenic effect, and long-term use will cause great harm to the blood, leading to chronic poisoning and neurasthenia syndrome. Ammonia water is prone to burn the skin and mucous membranes. If ammonia water splashes into the eyes, it may cause lens turbidity and even blindness in severe cases. In addition, the strong pungent smell of ammonia water is also likely to cause physical discomfort to users. Hydrogen peroxide generally functions to remove the original color of the hair in traditional chemical hair dyeing, and during the decolorization process, it is easy to cause irreversible damage to the hair quality. After multiple uses, the hair quality may become so fragile that it breaks at the slightest tug.
[0003] Natural hair dyes are made by extracting and concentrating colored plants. Compared with traditional chemical dyes, natural hair dyes have incomparable safety advantages. Due to the poor adhesion of natural hair dyes compared to chemical hair dyes, the color stability is generally not strong, and it is easy to decolorize after multiple hair washes.
[0004] At present, the main raw materials for existing metal ion hair dyes are substances such as lead acetate and silver nitrate. Lead-containing dyes pose a great risk to the user's body, and pregnant women using them may cause abnormal fetal development. And silver nitrate belongs to dangerous chemicals, and the production process has great risks.
[0005] In view of the above problems, we have proposed a new type of hair dye that improves stability and dyeing effect on the premise of ensuring safety. Summary of the Invention
[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a hair dyeing composition and a preparation method thereof.
[0007] To achieve the purpose of this invention, the present invention adopts the following technical solutions:
[0008] In the first aspect, the present invention provides a hair dyeing composition, which includes a developer and a hair dye. The hair dye includes Tris and silver sulfate, and the developer includes sodium erythorbate or ferrous lactate.
[0009] In the hair dyeing composition of the present invention, Tris (tris(hydroxymethyl)aminomethane) is used as a solubilizing agent. Compared with traditional metal ion hair dyes, the production process of Tris silver ion hair dye has lower risks, and the substances used have less impact on the human body. Since Tris is a non-toxic and non-irritating substance, it causes minimal harm to the skin and mucous membranes, and has significant advantages for the physiological and health safety of users. At the same time, Tris does not contain benzene compounds that may cause cancer, nor does it cause burns or irritation like ammonia. In addition, the dyeing effect of Tris silver ion hair dye is better than that of natural hair dyes, with strong color stability and is not easily decolorized after washing. Generally speaking, by using Tris as a solubilizing agent, our silver ion hair dye has been significantly improved in terms of safety, stability and dyeing effect, providing a new possibility for hair dyeing technology.
[0010] Sodium erythorbate and ferrous lactate both have good effects as developers.
[0011] Tris is an organic weak base and is often used as a buffer in biochemistry and molecular biology experiments. Tris has good buffering capacity, especially in an environment with pH>7, which can make silver ions exist stably, and this has an important impact on the stability and use effect of silver ion hair dye.
[0012] Preferably, the molar ratio of Tris to silver sulfate in the hair dye is greater than 1.29:1, such as 1.29:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, 5.5:1, 6:1, 6.5:1, 7:1, 7:1, 7.5:1, etc. Other specific point values within the above numerical range can be selected and will not be elaborated one by one here.
[0013] Preferably, the hair dye further includes manganese ions.
[0014] The present invention finds that adding trace amounts of manganese ions to the hair dye can effectively improve the hair dyeing effect.
[0015] Preferably, the concentration of the manganese ions is 0.8 - 2 ppm, such as 0.8 ppm, 0.9 ppm, 1 ppm, 1.1 ppm, 1.2 ppm, 1.3 ppm, 1.4 ppm, 1.5 ppm, 1.6 ppm, 1.7 ppm, 1.8 ppm, 1.9 ppm, 2 ppm, etc. Other specific point values within the above numerical range can be selected and will not be elaborated one by one here.
[0016] Preferably, the pH of the hair dye is 8.3 - 8.7, such as 8.3, 8.4, 8.5, 8.6, 8.7, etc. Other specific point values within the above numerical range can be selected and will not be elaborated one by one here.
[0017] Preferably, the hair dye further comprises any one or a combination of at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner.
[0018] Preferably, the developer further comprises any one or a combination of at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner.
[0019] Preferably, the thickener comprises any one or a combination of at least two of xanthan gum, hydroxypropyl cellulose, cationic guar gum, carrageenan, propylene glycol alginate or acryloyldimethyltaurate / VP copolymer.
[0020] Preferably, the emulsifier comprises any one or a combination of at least two of glycerol monostearate, cetearyl alcohol, polysorbate, soy lecithin or polyacrylamide.
[0021] Preferably, the hair conditioner comprises any one or a combination of at least two of glycerol, transparent xanthan gum, hydrolyzed protein, lanolin, behenyl trimethyl ammonium methyl sulfate or cationic guar gum, preferably behenyl trimethyl ammonium methyl sulfate.
[0022] The present invention finds that behenyl trimethyl ammonium methyl sulfate has better effect as a hair conditioner, which can significantly reduce the hair friction coefficient and make the hair smoother.
[0023] In a second aspect, the present invention provides a method for preparing the hair dye composition according to the first aspect. The preparation method of the hair dye comprises: physically mixing Tris, silver sulfate and water, and independently packaging them to obtain the hair dye;
[0024] The preparation method of the developer comprises: physically mixing sodium erythorbate or ferrous lactate with water, and independently packaging them to obtain the developer.
[0025] Preferably, when physically mixing Tris, silver sulfate and water, it further comprises mixing with any one or at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner.
[0026] Preferably, the preparation method of the developer further comprises mixing with any one or at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner.
[0027] Compared with the prior art, the present invention has the following beneficial effects:
[0028] In the hair dyeing composition of the present invention, Tris (tris(hydroxymethyl)aminomethane) is used as a solubilizing agent. Compared with traditional metal ion hair dyes, the production process of Tris silver ion hair dye has lower risks, and the substances used have less impact on the human body. Since Tris is a non-toxic and non-irritating substance, it causes minimal harm to the skin and mucous membranes, and has significant advantages for the physiological and health safety of users. At the same time, Tris does not contain benzene compounds that may cause cancer, nor does it cause burns or irritation like ammonia. In addition, the dyeing effect of Tris silver ion hair dye is better than that of natural hair dyes, with strong color stability and not easy to decolorize after washing hair. Generally speaking, by using Tris as a solubilizing agent, our silver ion hair dye has been significantly improved in terms of safety, stability and dyeing effect, providing a new possibility for hair dyeing technology.
[0029] Sodium erythorbate and ferrous lactate both have good effects as developers. Brief Description of the Drawings
[0030] Figure 1 It is a diagram of the dyeing result of the hair dyeing composition described in Example 7.
[0031] Figure 2 It is a diagram of the dyeing result of the hair dyeing composition described in Example 2.
[0032] Figure 3 It is a diagram of the dyeing result of the hair dyeing composition described in Example 3.
[0033] Figure 4 It is a diagram of the dyeing result of the hair dyeing composition described in Example 20.
[0034] Figure 5 It is a diagram of the untreated result. Detailed Description of the Invention
[0035] The technical solution of the present invention will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments are only for helping to understand the present invention and should not be regarded as specific limitations on the present invention.
[0036] The sources of the active ingredients contained in the products involved in the following examples and comparative examples are as follows (only the active ingredients are shown, and the necessary auxiliary ingredients contained in other commercially available raw materials are not described in detail):
[0037] Xanthan gum is sourced from a product named transparent gum produced by KELDENT Company;
[0038] Behenyl trimethyl ammonium methyl sulfate is sourced from a product named BTMS50 produced by Shanghai Zhongxiang Fine Chemical Co., Ltd.;
[0039] The hydrolyzed protein is derived from a product named hydrolyzed keratin purchased from Shanxi Ruisi Biotechnology Co., Ltd.;
[0040] The lanolin is derived from a product named polyethylene glycol - 75 purchased from Croda International Plc, UK;
[0041] The cationic guar gum is derived from a product named guar gum 3196 purchased from Ashland Inc., USA.
[0042] Preparation Example 1
[0043] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 2% Tris, and the balance is water.
[0044] The preparation method is: physically mix silver sulfate, Tris and water to obtain it.
[0045] Preparation Example 2
[0046] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 0.5% Tris, and the balance is water.
[0047] The preparation method refers to Example 1.
[0048] Preparation Example 3
[0049] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 0.2% Tris, and the balance is water.
[0050] The preparation method refers to Example 1.
[0051] Preparation Example 4
[0052] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 0.1% Tris, and the balance is water.
[0053] The preparation method refers to Example 1.
[0054] Preparation Example 5
[0055] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 1% Tris, and the balance is water.
[0056] The preparation method refers to Example 1.
[0057] Preparation Example 6
[0058] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate, 0.8% Tris, and the balance is water.
[0059] The preparation method refers to Example 1.
[0060] Comparative Preparation Example 1
[0061] This preparation example provides a hair dye, and the composition of the hair dye is 1% silver sulfate and the balance is water.
[0062] The preparation method refers to Example 1.
[0063] Example 1
[0064] This example provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 2% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate and the balance is water. The pH of the hair dye is 7. The developer includes 1% ferrous lactate and the balance is water.
[0065] The preparation method is as follows: Mix silver sulfate, Tris, xanthan gum, behenyl trimethyl ammonium methyl sulfate and water, and separately package them to obtain the hair dye; mix ferrous lactate and water, and separately package them to obtain the developer.
[0066] Example 2
[0067] This example provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 0.5% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate and the balance is water. The developer includes 1% ferrous lactate and the balance is water.
[0068] The preparation method refers to Example 1.
[0069] Example 3
[0070] This example provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 0.2% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate and the balance is water. The developer includes 1% ferrous lactate and the balance is water.
[0071] The preparation method refers to Example 1.
[0072] Example 4
[0073] This example provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 0.1% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate and the balance is water. The developer includes 1% ferrous lactate and the balance is water.
[0074] The preparation method refers to Example 1.
[0075] Example 5
[0076] This embodiment provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 1% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate, and the balance is water. The developer includes 1% ferrous lactate and the balance is water.
[0077] The preparation method refers to Example 1.
[0078] Example 6
[0079] This embodiment provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 0.8% Tris, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate, and the balance is water. The developer includes 1% ferrous lactate and the balance is water.
[0080] The preparation method refers to Example 1.
[0081] Example 7
[0082] This embodiment provides a hair dyeing composition, the difference from Example 1 is only that the pH of the hair dye is 8, and other components and their contents remain unchanged.
[0083] The preparation method refers to Example 1.
[0084] Example 8
[0085] This embodiment provides a hair dyeing composition, the difference from Example 1 is only that the pH of the hair dye is 9, and other components and their contents remain unchanged.
[0086] The preparation method refers to Example 1.
[0087] Example 9
[0088] This embodiment provides a hair dyeing composition, the difference from Example 1 is only that the pH of the hair dye is 10, and other components and their contents remain unchanged.
[0089] The preparation method refers to Example 1.
[0090] Example 10
[0091] This embodiment provides a hair dyeing composition, the difference from Example 1 is only that the pH of the hair dye is 11, and other components and their contents remain unchanged.
[0092] The preparation method refers to Example 1.
[0093] Example 11
[0094] This example provides a hair dyeing composition, which is only different from Example 1 in that ferrous lactate in the developer is replaced with sodium erythorbate in equal amount, and other components and their contents remain unchanged.
[0095] The preparation method refers to Example 1.
[0096] Example 12
[0097] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 0.1% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0098] The preparation method refers to Example 1.
[0099] Example 13
[0100] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 0.5% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0101] The preparation method refers to Example 1.
[0102] Example 14
[0103] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 1.5% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0104] The preparation method refers to Example 1.
[0105] Example 15
[0106] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 2% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0107] The preparation method refers to Example 1.
[0108] Example 16
[0109] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 5% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0110] The preparation method refers to Example 1.
[0111] Example 17
[0112] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 10% of sodium erythorbate and the balance of water. Other components and their contents remain unchanged.
[0113] The preparation method refers to Example 1.
[0114] Example 18
[0115] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 0.1% of ferrous lactate and the balance of water. Other components and their contents remain unchanged.
[0116] The preparation method refers to Example 1.
[0117] Example 19
[0118] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 0.5% of ferrous lactate and the balance of water. Other components and their contents remain unchanged.
[0119] The preparation method refers to Example 1.
[0120] Example 20
[0121] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 1.5% of ferrous lactate and the balance of water. Other components and their contents remain unchanged.
[0122] The preparation method refers to Example 1.
[0123] Example 21
[0124] This example provides a hair dyeing composition, which is only different from Example 1 in that the developer comprises 2% of ferrous lactate and the balance of water. Other components and their contents remain unchanged.
[0125] The preparation method refers to Example 1.
[0126] Example 22
[0127] This example provides a hair dyeing composition, which is only different from Example 1 in that behentrimonium methosulfate is replaced with glycerol in equal amounts, and other components and their contents remain unchanged.
[0128] The preparation method refers to Example 1.
[0129] Example 23
[0130] This example provides a hair dyeing composition, which is only different from Example 1 in that behentrimonium methosulfate is replaced with hydrolyzed protein in equal amounts, and other components and their contents remain unchanged.
[0131] The preparation method refers to Example 1.
[0132] Example 24
[0133] This example provides a hair dyeing composition, which is only different from Example 1 in that behenyl trimethyl ammonium methyl sulfate is replaced with lanolin in equal amounts, and other components and their contents remain unchanged.
[0134] The preparation method refers to Example 1.
[0135] Example 25
[0136] This example provides a hair dyeing composition, which is only different from Example 1 in that behenyl trimethyl ammonium methyl sulfate is replaced with cationic guar gum in equal amounts, and other components and their contents remain unchanged.
[0137] The preparation method refers to Example 1.
[0138] Example 26
[0139] This example provides a hair dyeing composition, which is only different from Example 1 in that it does not contain behenyl trimethyl ammonium methyl sulfate, and the reduced mass is made up with water, and other components and their contents remain unchanged.
[0140] The preparation method refers to Example 1.
[0141] Example 27
[0142] This example provides a hair dyeing composition, which is only different from Example 1 in that the composition of the hair dye is 1% silver sulfate, 0.5% Tris, 0.2 ppm MnSO4 and the balance is water, and other components and their contents remain unchanged.
[0143] The preparation method refers to Example 1.
[0144] Example 28
[0145] This example provides a hair dyeing composition, which is only different from Example 1 in that the composition of the hair dye is 1% silver sulfate, 0.5% Tris, 0.4 ppm MnSO4 and the balance is water, and other components and their contents remain unchanged.
[0146] The preparation method refers to Example 1.
[0147] Example 29
[0148] This example provides a hair dyeing composition, which is only different from Example 1 in that the composition of the hair dye is 1% silver sulfate, 0.5% Tris, 0.8 ppm MnSO4 and the balance is water, and other components and their contents remain unchanged.
[0149] The preparation method refers to Example 1.
[0150] Example 30
[0151] This example provides a hair dyeing composition, which is only different from Example 1 in that the composition of the hair dye is 1% silver sulfate, 0.5% Tris, 1 ppm MnSO4, and the balance is water, and the other components and their contents remain unchanged.
[0152] The preparation method refers to Example 1.
[0153] Example 31
[0154] This example provides a hair dyeing composition, which is only different from Example 1 in that the composition of the hair dye is 1% silver sulfate, 0.5% Tris, 2 ppm MnSO4, and the balance is water, and the other components and their contents remain unchanged.
[0155] The preparation method refers to Example 1.
[0156] Comparative Example 1
[0157] This comparative example provides a hair dyeing composition, which includes a hair dye and a developer. The composition of the hair dye is 1% silver sulfate, 1% xanthan gum, 1% behenyl trimethyl ammonium methyl sulfate, and the balance is water. The pH of the hair dye is 7. The developer includes 1% sodium erythorbate and the balance is water.
[0158] Its preparation method is as follows: Mix silver sulfate, xanthan gum, behenyl trimethyl ammonium methyl sulfate and water, and separately package them to obtain the hair dye; mix sodium erythorbate and water, and separately package them to obtain the developer.
[0159] Comparative Example 2
[0160] This comparative example provides a hair dyeing composition, which is only different from Example 1 in that ferrous lactate in the developer is replaced with ascorbic acid in equal amounts, and the other components and their contents remain unchanged.
[0161] The preparation method refers to Example 1.
[0162] Comparative Example 3
[0163] This comparative example provides a hair dyeing composition, which is only different from Example 1 in that sodium erythorbate in the developer is replaced with sodium dithionite in equal amounts, and the other components and their contents remain unchanged.
[0164] The preparation method refers to Example 1.
[0165] Comparative Example 4
[0166] This comparative example provides a hair dyeing composition, which is only different from Example 1 in that sodium erythorbate in the developer is replaced with mercaptoacetic acid in equal amounts, and the other components and their contents remain unchanged.
[0167] The preparation method refers to Example 1.
[0168] Test Example 1
[0169] Solubility test
[0170] Test samples: Preparation Examples 1-6, Comparative Preparation Example 1
[0171] Table 1
[0172] Sample Dissolution condition Preparation Example 1 Soluble (colorless, slightly turbid) Preparation Example 2 Soluble (slightly yellow, translucent) Preparation Example 3 Slightly insoluble (yellow, translucent) Preparation Example 4 Slightly insoluble (yellow, translucent) Preparation Example 5 Soluble (dim, slightly turbid) Preparation Example 6 Soluble (dull, slightly turbid) Comparative Preparation Example 1 Slightly soluble (colorless, transparent)
[0173] The above results show that when the molar ratio of silver ions to Tris is 0.39 (1% silver sulfate, 2% Tris), the mixture is completely soluble and is in a colorless, slightly turbid state, and this result can be considered the best.
[0174] Test Example 2
[0175] Coloration effect test
[0176] Test samples: Examples 1-10, Comparative Example 1
[0177] Test method: Evenly apply the hair dye on the hair, rinse the hair with water after 30 minutes, apply the developer on the washed hair, and observe the color development after 30 minutes.
[0178] Table 2
[0179]
[0180]
[0181] The dyeing effect of the hair dye composition described in Example 7 is as Figure 1 shown, the dyeing effect of the hair dye composition described in Example 2 is as Figure 2 shown, the dyeing effect of the hair dye composition described in Example 3 is as Figure 3 shown, the untreated hairspring is as Figure 5 shown. When the molar ratio is 0.39 and pH > 7, the solubilization effect of Tris is the best and the coloration effect is the best.
[0182] Note: ΔE is measured using the spectrophotometric color difference meter of Shenzhen 3nh Technology Co., Ltd., model: CR7 (basic version). When using, tightly arrange the hairsprings on a clean A4 paper, and closely attach the spectrophotometric color difference meter to the hairsprings for detection.
[0183] Test Example 3
[0184] Color development ability test
[0185] Test method:
[0186] (1) Immerse the simulated white hair in the hair dye for 1 minute;
[0187] (2) Take out the simulated white hair, wash the remaining hair dye clean with clear water, and dry it with a hair dryer;
[0188] (3) Immerse the dried simulated white hair in the developer for 30 seconds and observe the color development.
[0189] The test criteria for color scores are shown in Table 3, the test criteria for efficiency scores are shown in Table 4, and the test results are shown in Table 5.
[0190] Table 3
[0191]
[0192]
[0193] Table 4
[0194] Efficiency score Standard 1 Color change time ≥ 10 min 2 8 min ≤ color change time < 10 min 3 6 min ≤ color change time < 8 min 4 4 min ≤ color change time < 6 min 5 Color change time < 4 min
[0195] Table 5
[0196] Group Color score Efficiency score Example 1 4 2 Example 11 3.5 4 Comparative Example 2 - - Comparative Example 3 4 5 Comparative Example 4 - -
[0197] As can be seen from the data in Table 5, the color development speed of sodium dithionite at a concentration of 1% is the fastest and the color is the deepest. However, due to the strong smell of sodium dithionite, using it in hair cosmetics will greatly affect the consumer experience. We choose sodium erythorbate and ferrous lactate, which are slightly inferior to sodium dithionite in terms of color development speed and color depth, as the main components of the developer. The main advantages of this raw material are stability and no odor. Compared with ascorbic acid and ascorbates, it has stronger stability in aqueous solution.
[0198] Optimal color development concentration test
[0199] The test method is the same as that of the color development ability test.
[0200] Table 6
[0201] Group Color score Efficiency score Example 11 2 2 Example 12 - - Example 13 1 1 Example 15 3 3 Example 16 5 4 Example 17 5 4.5
[0202] The experimental results are shown in Table 6. As the concentration of sodium erythorbate increases, both the color development speed and color depth of the solution increase. Since high-concentration sodium erythorbate aqueous solution is prone to precipitate crystals and will emit a slight rust smell after staying for a long time, we use 5% sodium erythorbate as the optimal developer ratio.
[0203] Test Example 4
[0204] Color development effect comparison test
[0205] Test samples: Example 1, Examples 11 - 15, 18 - 21
[0206] The test method is the same as that in Test Example 3.
[0207] Table 7
[0208]
[0209]
[0210] The results show that at the same concentration, the coloring effect of ferrous lactate is better than that of sodium erythorbate, but the coloring speed is slower than that of sodium erythorbate. The hair dyeing result of Example 20 is as Figure 4 shown.
[0211] Test Example 5
[0212] Hair care effect test
[0213] Test samples: Example 1, Examples 22 - 26
[0214] Test method:
[0215] Apply the test sample to the hairspring, leave it at 35 °C for 20 min, wash it with clear water, dry it in an oven at 60 °C, and then use a friction coefficient measuring instrument to measure the friction coefficient of the hair.
[0216] Table 8
[0217] Number Appearance Hair friction coefficient p - value (compared with Example 26) Example 1 Light yellow gel 0.23±0.011 0.00048 Example 22 Colorless, translucent gel 0.33±0.01 0.012 Example 23 White, translucent gel 0.28±0.007 0.043 Example 24 White, translucent gel 0.29±0.003 0.005 Example 25 Colorless, translucent gel 0.34±0.027 0.019 Example 26 Colorless, translucent gel 0.37±0.015 -
[0218] It can be seen from the data in Table 8 that behenyl trimethyl ammonium methyl sulfate has the best hair care effect.
[0219] Test Example 6
[0220] Coloring effect test
[0221] Test method: The same as Test Example 2
[0222] Table 9
[0223]
[0224] It can be seen from the data in Table 9 that adding a small amount of manganese ions to the hair dye can effectively improve the hair dyeing effect, which may be related to the catalytic role of manganese ions in the system.
[0225] The applicant declares that the present invention illustrates a hair dyeing composition and its preparation method through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, the equivalent substitution of each raw material of the present invention's product, the addition of auxiliary components, the selection of specific methods, etc., all fall within the protection scope and the disclosure scope of the present invention.
[0226] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.
[0227] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. In order to avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.
Claims
1. A hair dyeing composition, characterized in that, The hair dyeing composition comprises a developer and a hair dye. The hair dye comprises Tris and silver sulfate, and the developer comprises sodium erythorbate or ferrous lactate.
2. The hair dyeing composition according to claim 1, characterized in that, The molar ratio of Tris to silver sulfate in the hair dye is greater than 1.29:
1.
3. The hair dyeing composition according to claim 1 or 2, characterized in that, The hair dye further comprises manganese ions.
4. The hair dyeing composition according to claim 3, characterized in that, The concentration of the manganese ions is 0.8 - 2 ppm.
5. The hair dyeing composition according to any one of claims 1-4, characterized in that, The pH of the hair dye is 8.3 - 8.
7.
6. The hair dyeing composition according to any one of claims 1-5, characterized in that, The hair dye further comprises any one or a combination of at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner; Preferably, the developer further comprises any one or a combination of at least two of a thickener, an emulsifier, a pH regulator or a hair conditioner.
7. The hair dyeing composition according to claim 6, characterized in that The thickener comprises any one or a combination of at least two of xanthan gum, hydroxypropyl cellulose, cationic guar gum, carrageenan, propylene glycol alginate or acryloyldimethyltaurate / VP copolymer.
8. The hair dyeing composition according to claim 6 or 7, characterized in that, The emulsifier comprises any one or a combination of at least two of glycerol monostearate, cetearyl alcohol, polysorbate, soy lecithin or polyacrylamide.
9. The hair dyeing composition according to any one of claims 6-8, characterized in that The hair conditioner comprises any one or a combination of at least two of glycerol, transparent xanthan gum, hydrolyzed protein, lanolin, behenyl trimethyl ammonium methyl sulfate or cationic guar gum, preferably behenyl trimethyl ammonium methyl sulfate or cationic guar gum.
10. The preparation method of the hair dyeing composition according to any one of claims 1-9, characterized in that, The preparation method of the hair dye comprises: physically mixing Tris, silver sulfate and water, and independently packaging them to obtain the product; The preparation method of the developer comprises: physically mixing sodium erythorbate or ferrous lactate with water, and independently packaging them to obtain the product.