Plant compound color fixing agent and application thereof in hair dye

Abstract

The invention relates to the technical field of cosmetics, in particular to a plant compound color fixing agent and application thereof in hair dye. The plant compound color fixing agent comprises a ginkgo leaf extract, a nigella glandulifera extract and a black walnut shell extract. When the color fixing agent disclosed by the invention is added into a hair dye, the obvious effects of fixing the color, preventing hair breakage and repairing the hair quality are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cosmetics, in particular to a plant compound color fixing agent and its application in hair dye. BACKGROUND

[0002] In the field of hair dye, the performance of color fixing agent directly affects the durability of dyeing effect and the health of hair quality. In traditional hair dye, color fixing agent mostly relies on synthetic chemicals (such as acrylic polymer or quaternary ammonium salt), which temporarily fix dye molecules through charge adsorption or film formation. However, such color fixing agents have significant defects:

[0003] Limited fixing effect: the binding force between synthetic color fixing agent and dye molecules is weak, which is easy to cause color loss due to shampooing, rubbing, light or oxidation, and is difficult to meet the needs of consumers for long-lasting color.

[0004] Damage to hair structure: chemical color fixing agent is easy to form a rigid film layer on the surface of hair, which hinders the penetration of moisture and nutrients, and long-term use leads to dry and brittle hair, with a decrease of 10%-30% in tensile strength.

[0005] Safety hazards: some color fixing agents contain heavy metals (such as lead salt) or irritating ingredients, which may cause scalp allergy or cumulative toxicity.

[0006] In recent years, plant extracts have been tried to be used for the development of color fixing agent due to their natural source and multifunctionality, but single plant ingredients (such as tannic acid, anthocyanin) have problems of low color fixing efficiency and poor compatibility with dye system. In addition, existing compound schemes mostly focus on antioxidant or hair care functions, and lack of exploration of the synergistic color fixing mechanism of multiple plant ingredients, which is difficult to achieve the balance of color fixing and hair care functions.

[0007] Therefore, it is urgent to develop a plant compound color fixing agent, which can break through the color fixing bottleneck of single component through the synergistic effect of specific plant components, improve the durability of hair dyeing, repair hair damage, and meet the technical needs of the market for high-efficiency and safe hair dye SUMMARY

[0008] The present application is directed to the above technical problems, and provides a plant compound color fixing agent and its application in hair dye.

[0009] In the first aspect, the present application provides a color fixing agent, which comprises ginkgo leaf extract, adenosma glutinosum extract and black walnut shell extract, and the mass ratio of the three is (1.6-1.8):(0.1-0.5):(0.1-0.3).

[0010] Preferably, the mass ratio of the ginkgo leaf extract, adenosma glutinosum extract and black walnut shell extract is 1.7:(0.2-0.4):0.2.

[0011] Preferably, the mass ratio of the Ginkgo biloba extract, Nigella sativa extract and Juglans nigra shell extract is 1.7:0.3:0.2.

[0012] In a second aspect, the present application provides a hair dye, wherein the hair dye comprises the fixing agent of the first aspect.

[0013] Preferably, the hair dye comprises an A agent and a B agent;

[0014] The A agent comprises the following mass percentage components:

[0015] Coloring agent 1%-3%;

[0016] Fixing agent of the first aspect 0.5%-5%;

[0017] pH regulator 3%-5%;

[0018] Emulsifier 2%-8%;

[0019] Hair conditioner 0.5%-12%;

[0020] Thickening agent 0.1%-3%;

[0021] Preservative 0.1%-1%;

[0022] Solvent to 100%;

[0023] The B agent comprises the following mass percentage components:

[0024] Oxidizing agent 2%-5%;

[0025] Emulsifier 2%-8%;

[0026] Thickening agent 0.1%-3%;

[0027] Preservative 0.1%-1%;

[0028] Solvent to 100%;

[0029] The mass ratio of the A agent and the B agent is 1:(0.8-1.2).

[0030] Further preferably, the coloring agent in the A agent comprises a dye intermediate and a coupler; the dye intermediate is selected from N,N'-bis(2-hydroxyethyl) p-phenylenediamine sulfate and / or resorcinol; and the coupler is m-aminophenol.

[0031] The pH regulator in the A agent is at least one of ammonium hydroxide, disodium hydrogen phosphate and ethanolamine.

[0032] The oxidizing agent in the B agent is hydrogen peroxide and / or sodium peroxoborate.

[0033] The emulsifier in the A agent, the B agent is at least one of glycerin stearate, cetyl stearate polyether-25, cetyl stearyl alcohol;The thickening agent in the A agent, the B agent is at least one of carbomer, xanthan gum, acrylic acid (ester) copolymer;

[0034] The hair conditioner in the A agent is at least one of camellia seed oil, jojoba seed oil, grape seed oil, sodium hyaluronate;

[0035] The preservative in the A agent, the B agent is at least one of phenoxy ethanol, hydroxybenzoic acid ester, dihydrogen sodium pyrophosphate;

[0036] The solvent in the A agent, the B agent is deionized water.

[0037] In a third aspect, the present application provides a preparation method of the hair dye of the second aspect, comprising the following steps:

[0038] Step 1: mix the components in the A agent according to the formula amount, stir uniformly, to obtain the A agent;

[0039] Step 2: mix the components in the B agent according to the formula amount, stir uniformly, to obtain the B agent;

[0040] Step 3: fill the A agent and the B agent into two independent intervals in the container respectively according to the mass ratio of 1: (0.8-1.2) to obtain the hair dye.

[0041] Beneficial effects:

[0042] The present application innovatively uses ginkgo biloba extract, adenocaulon chingii extract and black walnut shell extract to prepare a plant fixing agent, and a "oxidation protection-interface activation-covalent anchoring" three-in-one fixing system is constructed through the synergistic effect of the components. Specifically, flavonoids (quercetin, kaempferol, etc.) in ginkgo biloba extract can inhibit oxidation reaction and effectively slow down the fading of dye molecules caused by free radical attack;The unique ginkolide in ginkgo biloba extract can form a flexible film layer on the hair surface and combine with p-phenylenediamine and other dye intermediates through hydrogen bond, thereby enhancing the anchoring effect of dye molecules in keratin. The saponin contained in adenocaulon chingii extract can promote the penetration of 2,5-diaminotoluene and other dye intermediates into the deep layer of hair by reducing the surface tension of the dye solution;The ortho-phenol group of tannic acid contained in black walnut shell extract forms a covalent bond with the amino group / mercapto group of keratin, and at the same time, a cross-linking network is established between dye molecules;The ellagic acid contained in black walnut shell extract fills the gap between hair scales through hydrophobic interaction, effectively blocking the dissolution of dye during the washing process.

[0043] The fixing system realizes the hair dyeing persistence and hair quality repair effect through the functional synergy of ginkgo leaf extract (antioxidant / film forming), nitraria sibirica pall extract (penetration / stabilization) and juglans nigra l. shell extract (crosslinking / filling), breaking through the performance bottleneck of single plant component and providing a new solution for the development of plant-based hair dye. DETAILED DESCRIPTION

[0044] The various effects of the present application will be more clearly presented hereinafter in conjunction with the specific embodiments. Those skilled in the art should understand that these specific embodiments are used to illustrate the present application, not to limit the present application.

[0045] In a first aspect, the present application provides a fixing agent, which comprises ginkgo leaf extract, nitraria sibirica pall extract and juglans nigra l. shell extract, and the mass ratio of the three is (1.6-1.8):(0.1-0.5):(0.1-0.3).

[0046] The specific composition of each fixing agent is as follows:

[0047] Fixing agent 1: composed of ginkgo leaf extract, nitraria sibirica pall extract and juglans nigra l. shell extract with a mass ratio of 1.7:0.3:0.2;

[0048] Fixing agent 2: composed of ginkgo leaf extract, nitraria sibirica pall extract and juglans nigra l. shell extract with a mass ratio of 1.6:0.5:0.1;

[0049] Fixing agent 3: composed of ginkgo leaf extract, nitraria sibirica pall extract and juglans nigra l. shell extract with a mass ratio of 1.8:0.1:0.3;

[0050] Comparative fixing agent 1: different from fixing agent 1, it does not contain ginkgo leaf extract, and the missing mass part is made up with an equal amount of deionized water;

[0051] Comparative fixing agent 2: different from fixing agent 1, it does not contain nitraria sibirica pall extract, and the missing mass part is made up with an equal amount of deionized water;

[0052] Comparative fixing agent 3: different from fixing agent 1, it does not contain juglans nigra l. shell extract, and the missing mass part is made up with an equal amount of deionized water.

[0053] Comparative fixing agent 4: different from fixing agent 1, it only contains ginkgo leaf extract, and the missing mass part is made up with an equal amount of deionized water;

[0054] Comparative fixing agent 5: different from fixing agent 1, it only contains nitraria sibirica pall extract, and the missing mass part is made up with an equal amount of deionized water;

[0055] Comparative fixing agent 6: Different from fixing agent 1, only black walnut shell extract is contained, and the missing mass part is made up by an equal amount of deionized water.

[0056] Comparative fixing agent 7: The mass ratio of ginkgo leaf extract, adenosine motherwort extract and black walnut shell extract is 1:1:1.

[0057] In a second aspect, the present application provides a hair dye, which comprises an A agent and a B agent.

[0058] The A agent comprises the following mass percentage components:

[0059] Coloring agent 1%-3%;

[0060] Fixing agent 0.5%-5% according to the first aspect;

[0061] pH regulator 3%-5%;

[0062] Emulsifier 2%-8%;

[0063] Hair conditioner 0.5%-12%;

[0064] Thickening agent 0.1%-3%;

[0065] Preservative 0.1%-1%;

[0066] Solvent is supplemented to 100%;

[0067] The B agent comprises the following mass percentage components:

[0068] Oxidizing agent 2%-5%;

[0069] Emulsifier 2%-8%;

[0070] Thickening agent 0.1%-3%;

[0071] Preservative 0.1%-1%;

[0072] Solvent is supplemented to 100%;

[0073] The mass ratio of the A agent and the B agent is 1:(0.8-1.2). The specific composition of each hair dye is as follows:

[0074] Hair dye 1:

[0075] The A agent comprises the following mass percentage components:

[0076] Coloring agent: 2%;

[0077] Fixing agent 1: 3%;

[0078] pH regulator: 4%;

[0079] Emulsifier: 5%;

[0080] Hair conditioner: 7%;

[0081] Thickener: 1.5%;

[0082] Preservative: 0.5%;

[0083] Solvent to 100%;

[0084] The B agent comprises the following mass percent components:

[0085] Oxidizing agent: 4%;

[0086] Emulsifier: 5%;

[0087] Thickener: 1.5%;

[0088] Preservative: 0.3%;

[0089] Solvent to 100%;

[0090] The mass ratio of the A agent and the B agent is 1:1.

[0091] Hair dye 2:

[0092] The A agent comprises the following mass percent components:

[0093] Coloring agent: 1%;

[0094] Fixing agent 2: 0.5%;

[0095] pH adjuster: 3%;

[0096] Emulsifier: 2%;

[0097] Hair conditioner: 12%;

[0098] Thickener: 3%;

[0099] Preservative: 0.1%;

[0100] Solvent to 100%;

[0101] The B agent comprises the following mass percent components:

[0102] Oxidizing agent: 5%;

[0103] Emulsifier: 8%;

[0104] Thickener: 0.1%;

[0105] Preservative: 1%;

[0106] Solvent to 100%;

[0107] The mass ratio of the A agent and the B agent is 1:0.8.

[0108] Hair dye 3:

[0109] The A agent comprises the following mass percentage components:

[0110] Coloring agent: 3%;

[0111] Fixing agent 3: 5%;

[0112] pH regulator: 5%;

[0113] Emulsifier: 8%;

[0114] Hair conditioner: 0.5%;

[0115] Thickening agent: 0.1%;

[0116] Preservative: 1%;

[0117] Solvent to 100%;

[0118] The B agent comprises the following mass percentage components:

[0119] Oxidizing agent: 2%;

[0120] Emulsifier: 2%;

[0121] Thickening agent: 3%;

[0122] Preservative: 0.1%;

[0123] Solvent to 100%;

[0124] The mass ratio of the A agent and the B agent is 1:1.2.

[0125] Hair dye 1:

[0126] Different from the hair dye 1, the comparative fixing agent 1 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0127] Hair dye 2:

[0128] Different from the hair dye 1, the comparative fixing agent 2 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0129] Hair dye 3:

[0130] Different from the hair dye 1, the comparative fixing agent 3 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0131] Hair dye 4:

[0132] Different from the hair dye 1, the comparative fixing agent 4 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0133] Hair dye ⑤:

[0134] Different from the hair dye 1, the comparative fixing agent 5 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0135] Hair dye ⑥:

[0136] Different from the hair dye 1, the comparative fixing agent 6 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0137] Hair dye ⑦:

[0138] Different from the hair dye 1, the comparative fixing agent 7 is used to replace the fixing agent 1 in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0139] Hair dye ⑧:

[0140] Different from the hair dye 1, the fixing agent is not used, and the missing amount is replaced by deionized water in equal amount, and the rest of the components and the amount are the same as those of the hair dye 1.

[0141] In the above hair dyes 1-3 and hair dyes ①-⑧, the coloring agent in the A agent is N,N'-bis(2-hydroxyethyl) p-phenylenediamine sulfate, m-dihydroxybenzene, m-aminophenol, wherein the mass ratio of N,N'-bis(2-hydroxyethyl) p-phenylenediamine sulfate, m-dihydroxybenzene, m-aminophenol is 3:1.5:1;

[0142] The pH adjuster in the A agent is ammonium hydroxide, ethanolamine, wherein the mass ratio of ammonium hydroxide and ethanolamine is 1:0.7;

[0143] The emulsifier in the A agent and the B agent is glycerol stearate, cetearyl alcohol, ceteareth-25, wherein the mass ratio of glycerol stearate, cetearyl alcohol, ceteareth-25 is 1:0.5:0.3;

[0144] The hair conditioner in the A agent is camellia seed oil, jojoba seed oil, grape seed oil, sodium hyaluronate, wherein the mass ratio of camellia seed oil, jojoba seed oil, grape seed oil, sodium hyaluronate is 1:0.7:0.3:0.1;

[0145] The thickening agent in the A agent and the B agent is an acrylic acid (ester) copolymer;

[0146] The preservative in the A agent and the B agent is phenoxyethanol;

[0147] The solvent in the A agent and the B agent is deionized water.

[0148] The oxidizing agent in the B agent is 5wt% hydrogen peroxide.

[0149] The preparation method of the hair dyes 1-3 and the hair dyes ①-⑧ comprises the following steps:

[0150] Step 1: mixing the components in the A agent according to the formula amount, stirring uniformly to obtain the A agent;

[0151] Step 2: mixing the components in the B agent according to the formula amount, stirring uniformly to obtain the B agent;

[0152] Step 3: filling the A agent and the B agent into two independent intervals in the container according to the mass ratio defined in the formula to obtain the hair dye.

[0153] Performance test:

[0154] Sensitization effect test

[0155] The hair dyes 1-3 and the hair dyes ①-⑧ are subjected to the rat skin allergic reaction test to verify the low-sensitivity effect of the hair dyes. In the test, the hair dyes are obtained by mixing and stirring the A agent and the B agent.

[0156] SD rats with a body weight of 200g±15g are selected and randomly divided into 12 groups including a test group and a blank group, and each group contains 10 rats. One day before the test, the rats are shaved on the back to prepare a test area with an area of about 2cm×2cm, and then a smearing treatment is performed. The smearing method is as follows: 0.2g of the hair dye is evenly smeared on the test area, and then three layers of gauze and glass paper are used to cover the test area in sequence, and then a tape is used to fix the gauze and the glass paper. After 3h, the tape, the glass paper and the gauze are removed in sequence. Then the above test (shaving-smeared hair dye-fixing-removing) is repeated on the 7th day, the 14th day and the 21st day. The blank group uses normal saline instead of the hair dye and performs the same operation as the test group. At 24h after the end of the 21st day, the skin conditions of the rats in each group are observed, the sensitization intensity is graded according to the relevant provisions in Chapter 6 of the Cosmetic Safety Technical Specifications, 0 level indicates no sensitization effect, the skin of the rats basically has no change, the higher the level, the higher the allergic degree, and the sensitization ratio is the ratio of the number of animals with a grade not lower than 2 to the number of test animals. The sensitization results are shown in Table 1.

[0157] Table 1 Sensitization results of the hair dyes

[0158]

[0159]

[0160] From the results in Table 1, it can be known that the hair dyes prepared by the application have a low-sensitivity effect, and the results of the comparative hair dye 1 and the hair dye ⑧ show that the fixing agent has a certain desensitization and soothing effect.

[0161] Anti-hair breakage effect test

[0162] The real human ex vivo hair bundle weighing about 5±0.5 g and about 15 cm in length was soaked in water for 10 s, and then 8 g of each of the hair dyes 1-3 and 1-8 was evenly applied to the hair bundle for hair dyeing treatment, and left for 30 min. The above hair dyeing hair bundle was washed with clean water to obtain a washed hair bundle, and then the tensile strength thereof was detected. The tensile strength of the hair dye 1 was taken as a reference, and the tensile strength reduction rates of the other groups were compared. The tensile strength of the washed hair bundle was detected according to the method described in T / GDC DC 012-2020 “Hair Product Toughness Efficacy Evaluation Method”. The test results are shown in Table 2. The higher the tensile strength reduction rate, the worse the hair quality, and the more prone to hair breakage.

[0163] Table 2 Tensile strength reduction rate

[0164]

[0165] According to the results in Table 2, the hair dye provided by the present application has a certain anti-hair breakage effect. Specifically, compared with the results of the hair dye 1 and the hair dye 7, it can be seen that the fixing agent provided by the present application has a certain anti-hair breakage effect.

[0166] Compared with the results of the hair dye 1 and the hair dyes 1-6, it can be seen that there is a synergistic effect between the ginkgo biloba extract, the adenophora stricta extract and the black walnut shell extract in the fixing agent, and the combined use has a significant anti-hair breakage effect.

[0167] Compared with the results of the hair dye 1 and the hair dye 7, it can be seen that the use of the components in the fixing agent provided by the present application according to the amount specified in the present application can obtain a better anti-hair breakage effect.

[0168] Fixing effect test

[0169] Test samples: hair dyes 1-3 and 1-8.

[0170] Detection method: 33 bleached real human ex vivo hair bundles (white) were selected, each weighing 5±0.5 g, and randomly divided into 11 groups, with 3 hair bundles in each group. The same amount of test sample was used to dye the hair bundles, and after dyeing, the hair bundles were placed in a constant temperature and humidity environment for 24 h. The hair bundles were detected using a COLORIMETER CL400, and the L1, a1 and b1 values were recorded. Then the dyed hair bundles were soaked in clean water for rinsing, each time for 3 min. After 30 times of rinsing, the L2, a2 and b2 values were recorded again. Then the color difference X of each hair bundle before and after rinsing was calculated. The average color difference of the test group was taken as the result, and the results are shown in Table 3. The smaller the value of the color difference X, the more significant the fixing effect.

[0171] The color difference X calculation formula is: X = [(L2-L1) 2 +(a2-a1)2 + (b2 - b1) 2 ] 1 / 2

[0172] Table 3 fixing efficacy results

[0173] Test group Color difference X Hair dye 1 2.16 Hair dye 2 3.15 Hair dye 3 1.93 Hair dye ① 4.36 Hair dye ② 5.74 Hair dye ③ 5.61 Hair dye ④ 6.93 Hair dye ⑤ 6.75 Hair dye ⑥ 7.43 Hair dye ⑦ 3.09 Hair dye ⑧ 8.37

[0174] According to the results in Table 3, the hair dyes 1-3, 1-6 have certain fixing efficacy.

[0175] According to the results of the comparison between the hair dyes 1-3, 1-6 and the hair dye 7, the fixing agent provided by the present application has significant fixing efficacy.

[0176] According to the results of the comparison between the hair dye 1 and the hair dyes 1-6, the ginkgo leaf extract, the viola yedoensis extract and the juglans nigra shell extract in the fixing agent have significant fixing efficacy when used together.

[0177] According to the results of the comparison between the hair dye 1 and the hair dye 6, the fixing agent provided by the present application has significant fixing efficacy when the components are used in the amount defined in the present application.

[0178] According to the results of the comparison between the hair dye 1 and the hair dyes 5 and 6, the viola yedoensis extract and the juglans nigra shell extract in the present application can be used together to synergistically enhance the fixing effect.

[0179] According to the results of the comparison between the hair dye 2 and the hair dyes 4 and 6, the ginkgo leaf extract and the juglans nigra shell extract in the present application can be used together to synergistically enhance the fixing effect.

[0180] According to the results of the comparison between the hair dye 3 and the hair dyes 4 and 5, the ginkgo leaf extract and the viola yedoensis extract in the present application can be used together to synergistically enhance the fixing effect.

[0181] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A color fixing agent, characterized in that: The invention comprises ginkgo leaf extract, glandular black cumin extract and black walnut shell extract in a mass ratio of (1.6-1.8): (0.1-0.5): (0.1-0.3).

2. A hair dye, characterized in that: The hair dye comprises the color-fixing agent according to claim 1.

3. The hair dye according to claim 2, characterized in that Includes dose A and dose B; The A agent includes the following components in percentage by weight: Colorant 1%-3%; 0.5%-5% of the fixing agent according to claim 1; pH adjuster 3%-5%; Emulsifier 2%-8%; Hair conditioner 0.5%-12%; Thickener 0.1%-3%; Preservatives 0.1%-1%; The solvent was replenished to 100%; The B agent includes the following components in percentage by weight: Oxidant 2%-5%; Emulsifier 2%-8%; Thickener 0.1%-3%; Preservatives 0.1%-1%; The solvent was replenished to 100%; The mass ratio of the agent A to the agent B is 1:(0.8-1.2).

4. The hair dye according to claim 3, characterized in that The colorant in the agent A includes a dye intermediate and a coupling agent; the dye intermediate is selected from N,N'-bis(2-hydroxyethyl)-p-phenylenediamine sulfate and / or resorcinol; and the coupling agent is m-aminophenol.

5. The hair dye according to claim 3, characterized in that The pH regulator in the agent A is at least one of ammonium hydroxide, disodium hydrogen phosphate, and ethanolamine.

6. The hair dye according to claim 3, characterized in that The oxidant in the agent B is hydrogen peroxide and / or sodium perborate.

7. The hair dye according to claim 3, characterized in that The emulsifier in Agent A and Agent B is at least one of glyceryl stearate, cetearyl stearate polyether-25, and cetearyl alcohol; the thickener in Agent A and Agent B is at least one of carbomer, xanthan gum, and acrylic acid (ester) copolymer.

8. The hair dye according to claim 3, characterized in that The hair conditioning agent is at least one of camellia seed oil, jojoba seed oil, grape seed oil, and sodium hyaluronate.

9. The hair dye according to claim 3, characterized in that The preservative in the agent A and the agent B is at least one of phenoxyethanol, methylparaben, and disodium dihydrogen pyrophosphate.

10. The hair dye according to claim 3, characterized in that The solvent in the agent A and the agent B is deionized water.

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