A non-streaking hair dye and a method for preparing the same

Abstract

The application discloses a non-scalp-staining hair dye and a preparation method thereof. The non-scalp-staining hair dye comprises a dyeing agent, a color developing agent and a protective agent. The dyeing agent comprises carbomer, acrylic acid (lipid) copolymer, propylene glycol, oxidative dye, alkali agent, EDTA-2Na, isoascorbic acid, hair conditioner, and the rest is water. The color developing agent comprises sodium laureth sulfate, cocamidopropyl betaine, propylene glycol, EDTA-2Na, oxidant, buffer, stabilizer, and the rest is water. The protective agent comprises propylene glycol, volcanic ash, sea buckthorn shell powder, sodium alginate, hydrogenated castor oil, hydroxyethylidene diphosphonic acid, soothing agent, pH regulator, and the rest is water. The preparation method of the non-scalp-staining hair dye comprises mixing the dyeing agent, the color developing agent and the protective agent respectively, and obtaining the non-scalp-staining hair dye. The application has the effect of significantly reducing scalp staining caused by hair dyeing, thereby soothing the scalp and reducing scalp irritation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hair dye, in particular to a non-scalp-dyeing hair dye and a preparation method thereof. BACKGROUND

[0002] With the improvement of living standards, the hairdressing and hair care industry is developing rapidly, and more and more people choose to change their appearance by dyeing their hair. Oxidative hair dye, as the mainstream hair dye today, its principle is that small molecule intermediates and coupling agents penetrate into the cortex of the hair to form a dyeing macromolecule through oxidative coupling reaction. Because there are many small molecule substances in the oxidative hair dye, they can easily penetrate into the skin of the human body, and can easily cause skin staining.

[0003] Nowadays, in order to avoid skin staining, we will take relevant protective measures before dyeing, such as applying cream around the hairline, wearing ear protection cover and so on. But such protective measures can only isolate the dyeing of the protected parts by the hair dye, and have no protective effect on the scalp exposed to the hair dye, especially when washing the hair dye, the hair dye will inevitably come into contact with the scalp, causing the scalp to be dyed, and small molecule substances such as oxidative dyes in the hair dye may also penetrate into the scalp and damage the scalp health.

[0004] For the above related technology, the present applicant believes that the existing measures to prevent the dyeing agent from staining cannot avoid the dyeing of the scalp by the dyeing agent, therefore, the problem of the dyeing agent staining the scalp still has room for improvement. SUMMARY

[0005] In order to solve the problem that the hair dye easily stains the scalp, the present application provides a non-scalp-dyeing hair dye and a preparation method thereof. The non-scalp-dyeing hair dye of the present application is a three-agent type, compared with the conventional two-agent type oxidative dyeing agent on the market, it adds one agent of protective agent, the protective agent added by the present application can effectively inhibit the penetration of small molecule oxidative dyes into the scalp without affecting the dyeing effect, effectively reduce the phenomenon that small molecule oxidative dyes penetrate into the scalp and cause color reaction to dye the scalp, and has the effect of reducing the probability of scalp staining.

[0006] In the first aspect, the non-scalp-dyeing hair dye provided by the present application adopts the following technical scheme:

[0007] A non-scalp-dyeing hair dye, comprising a dyeing agent, a color developing agent and a protective agent,

[0008] The dyeing agent comprises the following components by mass percentage: 4-10% carbomer, 1-4% acrylic acid (lipid) copolymer, 2-4% propylene glycol, 3-6% oxidative dye, 1.5-5% alkali agent, 1-4% EDTA-2Na, 0.5-3% erythorbic acid, 0.5-2% hair conditioner, and the balance is water.

[0009] The color developer includes the following mass percentage of components: 6% to 16% sodium laureth sulfate, 4% to 12% cocamidopropyl betaine, 2% to 4% propylene glycol, 1% to 4% EDTA-2Na, 3% to 6% oxidant, 0.01% to 1% buffer, 0.01% to 1% stabilizer, and the balance is water;

[0010] The protective agent includes the following mass percentage of components: 5% to 7% propylene glycol, 1% to 3% volcanic ash, 0.5% to 1% sea buckthorn shell powder, 1% to 3% sodium alginate, 2% to 6% hydrogenated castor oil, 1% to 2% hydroxyethylidene diphosphonic acid, 0.1% to 1% soothing agent, 0.01% to 0.03% pH adjuster, and the balance is water.

[0011] In the above technical solution, the volcanic ash, sea buckthorn shell powder, sodium alginate, and hydrogenated castor oil in the protective agent trigger interactions from different mechanisms, which together promote the adsorption effect of the volcanic ash and sea buckthorn shell powder on the scalp, especially on the hair follicles on the scalp. When the hair dye adheres to the scalp, the volcanic ash and sea buckthorn shell powder can first adsorb on the scalp, especially around the hair follicles, and then be assisted by the sodium alginate and hydrogenated castor oil to form a physical barrier on the surface of the scalp, thereby inhibiting the further penetration of the hair dye on the scalp, especially the penetration of the hair dye from the hair follicles on the scalp into the scalp, reducing the dyeing of the scalp caused by the penetration of the oxidative dye, and reducing the damage to the scalp caused by the hair dyeing. When the hair dye is washed off, the volcanic ash and sea buckthorn shell powder fall off from the scalp, which also has a certain cleaning effect on the scalp. In combination with the soothing agent, the irritation of the hair dye to the scalp is alleviated.

[0012] Through the interaction of sodium alginate, hydrogenated castor oil, and carbomer, the hair dye can be stably attached to the hair, reducing the probability of oxidative dye falling off from the hair during dyeing, and reducing the probability of staining clothes and skin.

[0013] Preferably, the soothing agent includes hydroxyproline, coffee arabica seed extract, and salvia officinalis extract.

[0014] In the above technical solution, hydroxyproline, coffee arabica seed extract, and salvia officinalis extract synergistically act together, have the effect of further shrinking pores and soothing the skin, and can well cooperate with the physical barrier formed by the volcanic ash, sea buckthorn shell powder, sodium alginate, and hydrogenated castor oil on the surface of the scalp to further isolate the further penetration of the hair dye to the scalp, and further reduce the dyeing of the scalp.

[0015] Preferably, the mass ratio of hydroxyproline, coffee arabica seed extract, and salvia officinalis extract is (1 to 10) : (3 to 5) : (0.1 to 1).

[0016] In the technical scheme, the soothing agent compounded according to the quality ratio has better soothing effect on the scalp, and further relieves the irritation of the hair dye to the scalp.

[0017] Preferably, the dyeing agent further comprises 0.3-0.4% phenyl methyl pyrazolone.

[0018] In the technical scheme, the phenyl methyl pyrazolone is added as an oxidation retarder to the hair dye, and the phenyl methyl pyrazolone can effectively delay the oxidation of the oxidation dye by the oxidant and air, but does not affect the color development of the oxidation dye in the hair, thereby delaying the discoloration time of the hair dye after mixing of the three agents, so that the hair dye accidentally falling on the clothes or skin during dyeing can be wiped clean in time.

[0019] Preferably, the hair conditioner comprises amodimethicone, hydrolyzed glycosaminoglycan and coix extract.

[0020] In the technical scheme, the hair conditioner compounded by the amodimethicone, the hydrolyzed glycosaminoglycan and the coix extract has good hair care effect, can reduce the damage of the hair dye to the hair, and further prolongs the color development time of the oxidation dye in cooperation with the phenyl methyl pyrazolone.

[0021] In the second aspect, the application provides a preparation method of the non-scalp-staining hair dye, which adopts the following technical scheme.

[0022] The preparation method of the non-scalp-staining hair dye is as follows:

[0023] The water, carbomer, acrylic acid (lipid) copolymer, propylene glycol and EDTA-2Na are uniformly mixed, emulsified and homogenized at 80-85 DEG C for 20-30 min, then cooled to 40-45 DEG C, and the oxidation dye, the alkali agent, the erythorbic acid, the hair conditioner and the phenyl methyl pyrazolone are added and uniformly stirred to obtain the dyeing agent.

[0024] Preferably, the preparation method of the color developing agent is as follows:

[0025] The water, sodium laureth sulfate, cocamidopropyl betaine, propylene glycol and EDTA-2Na are uniformly mixed, emulsified and homogenized at 80-85 DEG C for 20-30 min, then cooled to 40-45 DEG C, and the oxidant, the buffer and the stabilizer are added and uniformly stirred to obtain the color developing agent.

[0026] Preferably, the preparation method of the protective agent is as follows:

[0027] Mixing water, propylene glycol, hydrogenated castor oil, volcanic ash, sea buckthorn shell powder, sodium alginate, hydroxyethylidene diphosphonic acid uniformly, emulsifying and homogenizing at 80-85 DEG C for 20-30 min, then cooling to 40-45 DEG C, adding soothing agent, pH regulator, stirring uniformly to obtain the protective agent.

[0028] By adopting the above technical scheme, the components of the dyeing agent, the color developing agent and the protective agent are uniformly mixed, and the above preparation method is simple and efficient, and has the conditions for industrial production.

[0029] In a third aspect, the application provides a use method of the non-staining scalp hair dye, which adopts the following technical scheme:

[0030] The use method of the non-staining scalp hair dye is to mix the dyeing agent, the color developing agent and the protective agent 1:1:1 uniformly, and then uniformly apply them on the scalp, and then clean them after the hair is dyed.

[0031] In summary, the application has at least one of the following beneficial technical effects:

[0032] 1. The volcanic ash, the sea buckthorn shell powder, the sodium alginate and the hydrogenated castor oil in the protective agent trigger interactions from different mechanisms, which together promote the adsorption effect of the volcanic ash and the sea buckthorn shell powder on the scalp, especially on the hair follicles on the scalp, so that when the hair dye stains the scalp, the volcanic ash and the sea buckthorn shell powder can first be adsorbed on the scalp, especially around the hair follicles, and then the sodium alginate and the hydrogenated castor oil can be used to form a physical barrier on the surface of the scalp, which inhibits the further penetration of the hair dye on the scalp, especially the penetration of the hair dye from the hair follicles on the scalp into the scalp, reduces the staining of the scalp caused by the penetration of the oxidative dye, and reduces the damage to the scalp caused by the hair dye. When the hair dye is washed off, the volcanic ash and the sea buckthorn shell powder fall off the scalp, which also cleans the scalp to a certain extent, and the soothing agent can relieve the irritation of the hair dye to the scalp.

[0033] 2. The interactions of the sodium alginate, the hydrogenated castor oil and the carbomer can promote the stable adhesion of the hair dye to the hair, reduce the probability of the oxidative dye falling off the hair during dyeing, and reduce the probability of staining clothes and skin.

[0034] 3. The synergistic effect of hydroxyproline, coffee arabica seed extract and salvia officinalis extract can further shrink pores and soothe the skin, which can further cooperate with the physical barrier formed by the volcanic ash, the sea buckthorn shell powder, the sodium alginate and the hydrogenated castor oil on the surface of the scalp, further isolate the further penetration of the hair dye to the scalp, and further reduce the staining of the scalp. DETAILED DESCRIPTION

[0035] In order to better illustrate the purpose, technical scheme and advantages of the application, the application will be further described below in conjunction with specific examples.

[0036] Preparation Example 1

[0037] A dyeing agent, comprising 73.8g water, 4g carbomer, 2g acrylic acid (lipid) copolymer, 4g propylene glycol, 6g oxidative dye, 5g alkali agent, 1g EDTA-2Na, 3g erythorbic acid, 1g hair conditioner, 0.2g fragrance.

[0038] The oxidative dye is p-phenylenediamine.

[0039] The alkali agent is 3wt% hydrogen peroxide solution.

[0040] The hair conditioner is a compound of ammonia-terminated polydimethylsiloxane, hydrolyzed glucosaminoglycan and yam extract in a mass ratio of 1:0.5:0.5.

[0041] The preparation method of the dyeing agent is as follows:

[0042] The water, carbomer, acrylic acid (lipid) copolymer, propylene glycol and EDTA-2Na are mixed and homogenized at 80℃ for 30min, then cooled to 40℃, and the oxidative dye, alkali agent, erythorbic acid and hair conditioner are added and stirred uniformly to obtain the dyeing agent.

[0043] Preparation Example 2

[0044] A dyeing agent, different from Preparation Example 1, comprising 73.7g water, 10g carbomer, 1g acrylic acid (lipid) copolymer, 2g propylene glycol, 3g oxidative dye, 4g alkali agent, 3g EDTA-2Na, 0.5g erythorbic acid, 2g hair conditioner, 0.8g fragrance.

[0045] The preparation method of the dyeing agent is as follows:

[0046] The water, carbomer, acrylic acid (lipid) copolymer, propylene glycol and EDTA-2Na are mixed and homogenized at 85℃ for 20min, then cooled to 45℃, and the oxidative dye, alkali agent, erythorbic acid and hair conditioner are added and stirred uniformly to obtain the dyeing agent.

[0047] Preparation Example 3

[0048] A dyeing agent, different from Preparation Example 1, comprising 73.4g water, 7g carbomer, 4g acrylic acid (lipid) copolymer, 3g propylene glycol, 4g oxidative dye, 1.5g alkali agent, 4g EDTA-2Na, 2g erythorbic acid, 0.5g hair conditioner, 0.6g fragrance.

[0049] Preparation Example 4

[0050] A dyeing agent, different from Preparation Example 3, further comprises 0.4g phenyl methyl pyrazolone, and the mass of water is adjusted to 73g.

[0051] Preparation Example 5

[0052] A dyeing agent, different from Preparation Example 3, further comprises 0.3g phenyl methyl pyrazolone, and the mass of water is adjusted to 73.1g.

[0053] Preparation Example 6

[0054] A dyeing agent, different from Preparation Example 5, wherein the hair conditioner is amodimethicone.

[0055] Preparation Example 7

[0056] A color developing agent, comprising 69.99g water, 6g sodium lauryl ether sulfate, 12g cocamidopropyl betaine, 4g propylene glycol, 4g EDTA-2Na, 3g oxidant, 1g buffer, 0.01g stabilizer.

[0057] The oxidant is a 3% concentration hydrogen peroxide solution.

[0058] The buffer is sodium hydrogen phosphate.

[0059] The stabilizer is sodium stannate.

[0060] The preparation method of the color developing agent is as follows:

[0061] Mix the water, sodium lauryl ether sulfate, cocamidopropyl betaine, propylene glycol, and EDTA-2Na, emulsify and homogenize at 80℃ for 30min, then cool to 45℃, add the oxidant, buffer, and stabilizer, stir uniformly to obtain the color developing agent.

[0062] Preparation Example 8

[0063] A color developing agent, different from Preparation Example 7, comprising 69.95g water, 16g sodium lauryl ether sulfate, 4g cocamidopropyl betaine, 2g propylene glycol, 1g EDTA-2Na, 6g oxidant, 0.05g buffer, and 1g stabilizer.

[0064] The preparation method of the color developing agent is as follows:

[0065] Mix the water, sodium lauryl ether sulfate, cocamidopropyl betaine, propylene glycol, and EDTA-2Na, emulsify and homogenize at 85℃ for 20min, then cool to 40℃, add the oxidant, buffer, and stabilizer, stir uniformly to obtain the color developing agent.

[0066] Preparation Example 9

[0067] A developer, different from Preparation Example 7, comprises 69.94g of water, 12g of sodium lauryl polyether sulfate, 8g of cocamidopropyl betaine, 3g of propylene glycol, 3g of EDTA-2Na, 4g of oxidant, 0.01g of buffer, and 0.05g of stabilizer.

[0068] Preparation Example 10

[0069] A protective agent comprises 82.89g of water, 5g of propylene glycol, 2g of volcanic ash, 0.5g of sea buckthorn shell powder, 3g of sodium alginate, 5g of hydrogenated castor oil, 1.5g of hydroxyethylidene diphosphonic acid, 0.1g of soothing agent, and 0.01g of pH adjuster.

[0070] The soothing agent is a mixture of hydroxyproline, Coffea arabica seed extract, and Salvia officinalis extract in a mass ratio of 1:3:0.1.

[0071] The pH adjuster is sodium lactate.

[0072] The preparation method of the protective agent is as follows:

[0073] The water, propylene glycol, hydrogenated castor oil, volcanic ash, sea buckthorn shell powder, sodium alginate, and hydroxyethylidene diphosphonic acid are uniformly mixed, emulsified and homogenized at 80°C for 30min, then cooled to 45°C, the soothing agent and the pH adjuster are added, stirred uniformly, and the protective agent is obtained.

[0074] Preparation Example 11

[0075] A protective agent, different from Preparation Example 10, comprises 82.45g of water, 6g of propylene glycol, 1g of volcanic ash, 1g of sea buckthorn shell powder, 2g of sodium alginate, 6g of hydrogenated castor oil, 1g of hydroxyethylidene diphosphonic acid, 0.5g of soothing agent, and 0.05g of pH adjuster.

[0076] The soothing agent is a mixture of hydroxyproline, Coffea arabica seed extract, and Salvia officinalis extract in a mass ratio of 10:5:1.

[0077] The preparation method of the protective agent is as follows:

[0078] The water, propylene glycol, hydrogenated castor oil, volcanic ash, sea buckthorn shell powder, sodium alginate, and hydroxyethylidene diphosphonic acid are uniformly mixed, emulsified and homogenized at 85°C for 20min, then cooled to 40°C, the soothing agent and the pH adjuster are added, stirred uniformly, and the protective agent is obtained.

[0079] Preparation Example 12

[0080] A protective agent, different from Preparation Example 10, comprises 82.3g of water, 7g of propylene glycol, 3g of volcanic ash, 0.7g of sea buckthorn shell powder, 1g of sodium alginate, 2g of hydrogenated castor oil, 2g of hydroxyethylidene diphosphonic acid, 1g of soothing agent, and 1g of pH adjuster.

[0081] Preparation Example 13

[0082] A protective agent, different from Preparation Example 12, is that the soothing agent is a mixture of Coffea arabica seed extract and Salvia officinalis extract at a mass ratio of 5:1.

[0083] Preparation Example 14

[0084] A protective agent, different from Preparation Example 12, is that the soothing agent is a mixture of hydroxyproline and Salvia officinalis extract at a mass ratio of 10:1.

[0085] Preparation Example 15

[0086] A protective agent, different from Preparation Example 12, is that the soothing agent is a mixture of hydroxyproline and Coffea arabica seed extract at a mass ratio of 10:5.

[0087] Preparation Example 16

[0088] A protective agent, different from Preparation Example 12, is that the volcanic ash is replaced with water.

[0089] Preparation Example 17

[0090] A protective agent, different from Preparation Example 12, is that the sea buckthorn shell powder is replaced with water.

[0091] Preparation Example 18

[0092] A protective agent, different from Preparation Example 12, is that the sodium alginate is replaced with xanthan gum.

[0093] Preparation Example 19

[0094] A protective agent, different from Preparation Example 12, is that the hydrogenated castor oil is replaced with glyceryl stearate.

[0095] Examples 1-9

[0096] A hair dye, comprising a dyeing agent, a developer, and a protective agent, wherein the dyeing agent, the developer, and the protective agent are respectively from the above preparation examples, and the specific selection is shown in Table 1.

[0097] Comparative Examples 1-5

[0098] A hair dye, comprising a dyeing agent, a developer, and a protective agent, wherein the dyeing agent, the developer, and the protective agent are respectively from the above preparation examples, and the specific selection is shown in Table 1.

[0099] Table 1:

[0100] Group Dyeing agent Color developing agent Protective agent Example 1 Preparation 1 Preparation 7 Preparation 10 Example 2 Preparation 2 Preparation 8 Preparation 11 Example 3 Preparation 3 Preparation 9 Preparation 12 Example 4 Preparation 3 Preparation 9 Preparation 13 Example 5 Preparation 3 Preparation 9 Preparation 14 Example 6 Preparation 3 Preparation 9 Preparation 15 Example 7 Preparation 4 Preparation 9 Preparation 12 Example 8 Preparation 5 Preparation 9 Preparation 12 Example 9 Preparation 6 Preparation 9 Preparation 12 Comparative Example 1 Preparation 3 Preparation 9 Preparation 16 Comparative Example 2 Preparation 3 Preparation 9 Preparation 17 Comparative Example 3 Preparation 3 Preparation 9 Preparation 18 Comparative Example 4 Preparation 3 Preparation 9 Preparation 19 Comparative Example 5 Preparation 3 Preparation 9 /

[0101] Test

[0102] 140 volunteers with white hair and no skin diseases were selected as test subjects and evenly divided into 14 groups, 10 people in each group.

[0103] 1. Detection of color change time of hair dye:

[0104] After the hair dyes of the above examples and comparative examples were mixed, 1 g of each was applied to a 1 cm*1 cm area on the inner side of the left forearm of the test subject. The time was counted from the completion of the application, and the color change time (min) of the hair dye was tested, taking the just beginning of the color change of the hair dye as the judgment standard. The average value of each group was recorded in Table 2.

[0105] 2. Detection of skin staining:

[0106] A 1 cm*1 cm area on the inner side of the right forearm of the test subject was selected. First, the initial L1, a1, b1 values of the skin were tested using a skin color difference meter (Munsell CM-26D). Then, after the hair dyes of the above examples and comparative examples were mixed, 1 g of each was applied to the selected area on the inner side of the right forearm of the test subject. The time was counted from the completion of the application, and after 20 min, the hair dye was washed off with clean water by gently rubbing. After the surface moisture was absorbed and the color no longer changed, the L2, a2, b2 values of the skin were tested again using the skin color difference meter, and the skin color difference value ΔE was calculated. The smaller the ΔE, the less the skin staining. The average value of the test results is shown in Table 2.

[0107] 1. Use evaluation:

[0108] The test subjects applied the hair dyes of the above examples and comparative examples evenly to their hair. After 20 min at 25°C, they washed the hair clean with clean water. The hair coloring, scalp staining, and scalp soothing were evaluated. The evaluation criteria for hair coloring were as follows: 9-12 points: the coloring agent was easy to apply evenly and not prone to dripping; 5-8 points: the coloring agent was generally easy to apply and prone to dripping; 0-4 points: the coloring agent was difficult to apply and prone to dripping. The evaluation criteria for scalp staining were as follows: 9-12 points: no staining on the temples; 5-8 points: slight staining on the temples; 0-4 points: severe staining on the temples. The evaluation criteria for scalp soothing were as follows: 9-12 points: no irritation or slight to no irritation on the scalp; 5-8 points: irritation on the scalp; 0-4 points: irritation, tightness, and dryness on the scalp. The average value of the evaluation results is shown in Table 2.

[0109] Table 2:

[0110]

[0111]

[0112] The above test results show that Examples 1-9 have good skin non-staining effects, and Examples 7-8 have the effect of prolonging the color development time of the hair dye.

[0113] The difference between Example 3 and Comparative Examples 1-4 is that the protective agents used in Comparative Examples 1-4 are replaced by volcanic ash, sea buckthorn shell powder, sodium alginate, and hydrogenated castor oil, respectively. The skin staining of Example 3 is obviously lighter than that of Comparative Examples 1-4. It can be analyzed that only the combination of volcanic ash, sea buckthorn shell powder, sodium alginate, and hydrogenated castor oil can form a physical barrier on the skin surface through synergistic effect, effectively inhibiting the further penetration of the hair dye on the skin, especially the penetration of the hair dye from the hair follicles of the scalp into the skin, thereby significantly reducing the staining of the dye on the skin.

[0114] The difference between Example 3 and Examples 4-6 is that the soothing agents of Examples 4-6 are not the combination of hydroxyproline, coffeeberry seed extract, and salvia extract. The skin staining and skin soothing effect of Example 3 are better than those of Examples 4-6 to some extent. It can be analyzed that the combination of hydroxyproline, coffeeberry seed extract, and salvia extract has special effects of further shrinking pores and soothing skin, thereby cooperating well with the physical barrier formed by volcanic ash, sea buckthorn shell powder, sodium alginate, and hydrogenated castor oil on the scalp surface, further reducing the staining of the scalp, and reducing the irritation of the scalp.

[0115] The difference between Example 3 and Examples 7-8 is that phenyl methyl pyrazolone is added to Examples 7-8. Examples 7-8 have the effect of prolonging the color development time of the hair dye compared to Example 3. It can be analyzed that adding phenyl methyl pyrazolone as an oxidation retarder to the hair dye can effectively delay the color change time of the hair dye.

[0116] The difference between Example 8 and Example 9 is that the hair conditioner of Example 9 is replaced by amodimethicone. The effect of prolonging the color development time of the hair dye of Example 9 is decreased to some extent compared to Example 8. It can be analyzed that the hair conditioner composed of amodimethicone, hydrolyzed glycosaminoglycan, and coix extract can cooperate with phenyl methyl pyrazolone to further prolong the color development time of the oxidative dye.

[0117] The specific embodiments are only an explanation of the present application, which is not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A non-scalp-sticking hair dye, characterized in that, Including dyes, developers, and protective agents. The dyeing agent comprises the following components by mass percentage: 4%~10% carbomer, 1%~4% acrylic (ester) copolymer, 2%~4% propylene glycol, 3%~6% oxidative dye, 1.5%~5% alkali, 1%~4% EDTA-2Na, 0.5%~3% isoascorbic acid, 0.5%~2% hair conditioning agent, 0.3%~0.4% phenylmethylpyrazolone, and the balance being water; The color developer comprises the following components by mass percentage: 6%~16% sodium lauryl ether sulfate, 4%~12% cocamidopropyl betaine, 2%~4% propylene glycol, 1%~4% EDTA-2Na, 3%~6% oxidant, 0.01%~1% buffer, 0.01%~1% stabilizer, and the balance being water; The protective agent comprises the following components by weight percentage: 5%~7% propylene glycol, 1%~3% volcanic ash, 0.5%~1% sea buckthorn shell powder, 1%~3% sodium alginate, 2%~6% hydrogenated castor oil, 1%~2% hydroxyethyl diphosphate, 0.1%~1% soothing agent, 0.01%~0.03% pH adjuster, and the balance being water; The hair conditioning agent in the dyeing agent includes amino-terminated polydimethylsiloxane, hydrolyzed glucosamine, and coix seed extract; the soothing agent in the protective agent includes hydroxyproline, coffee seed extract, and sage extract, and the mass ratio of hydroxyproline, coffee seed extract, and sage extract is (1~10):(3~5):(0.1~1).

2. A method for preparing a non-scalp-sticking hair dye as described in claim 1, characterized in that, The preparation method of the dye is as follows: Water, carbomer, acrylate copolymer, propylene glycol, and EDTA-2Na are mixed and emulsified at 80-85℃ for 20-30 minutes. Then, the mixture is cooled to 40-45℃, and oxidative dye, alkali, isoascorbic acid, hair conditioning agent, and phenylmethylpyrazolone are added. The mixture is stirred until homogeneous to obtain the dyeing agent.

3. The method for preparing a non-scalp-sticking hair dye according to claim 2, characterized in that, The colorimetric reagent is prepared as follows: Water, sodium lauryl ether sulfate, cocamidopropyl betaine, propylene glycol, and EDTA-2Na are mixed and emulsified at 80-85℃ for 20-30 minutes. Then, the mixture is cooled to 40-45℃, and oxidant, buffer, and stabilizer are added. After stirring evenly, the color developer is obtained.

4. The method for preparing a non-scalp-sticking hair dye according to claim 2, characterized in that, The preparation method of the protective agent is as follows: Water, propylene glycol, hydrogenated castor oil, volcanic ash, sea buckthorn shell powder, sodium alginate, and hydroxyethyl diphosphate are mixed and emulsified at 80-85℃ for 20-30 minutes. Then, the mixture is cooled to 40-45℃, and a soothing agent and pH adjuster are added. After stirring evenly, a protective agent is obtained.

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