A hair care composition containing potassium iodide and a method of making the same

Abstract

The present application provides a kind of hair care composition containing potassium iodide and its preparation method, the hair care composition includes A agent and B agent;The A agent includes 5,6-dihydroxyindole, potassium iodide, arginine, propylene glycol, sodium sulfite, ascorbic acid, xanthan gum and water;The B agent includes sodium laureth sulfate, potassium peroxodisulfate, cocamidopropyl betaine, disodium lauroyl glutamate, decyl glucoside, cocamide MEA, guar hydroxypropyltrimonium chloride, sodium chloride, citric acid, disodium EDTA, essence and water.The present application improves the stability of 5,6-dihydroxyindole by using potassium iodide mixed with 5,6-dihydroxyindole, improves the problem that dyeing effect is not obvious, uneven, dyeing is not persistent, and there is no risk of damage to hair and scalp by strong alkaline substances, avoids using benzidine substances with high carcinogenic and sensitizing risk, and the hair dyeing effect is more persistent, more mild, and safer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of daily chemical products, in particular to a hair care composition containing potassium iodide and a preparation method thereof. BACKGROUND

[0002] In today's society, with the intensification of population aging, the increase of young white hair, the increase of various white hair groups, the demand for hair dye market has increased dramatically. Consumers have higher demands for the safety of hair dyes. Most of the hair dyes sold on the market contain p-phenylenediamine and its derivatives, which have adverse effects on human body such as carcinogenicity, teratogenicity and allergy, and long-term use affects people's health. The plant-based hair dye mainly uses plant ingredients as the core, but does not contain aniline, and the coloring effect and lasting effect are far from the expectations of consumers.

[0003] Indole substances can easily penetrate into hair and enter the cortex layer of hair, and then oxidize and polymerize to form macromolecular colored substances fixed in hair, and the oxidation conditions are mild. Among them, 5,6-dihydroxyindole is a substance produced by living organisms, so it is non-toxic and has no side effects, and is an important intermediate for synthesizing melanin. It has been used to replace aniline and phenolic compounds in some cleaning products. The 5,6-dihydroxyindole in the existing artificial melanin hair dye is active, and it is easily oxidized to indolequinone by air, and polymerization plays a role in dyeing black. However, even if the 5,6-dihydroxyindole intermediate is active enough, it is still difficult to naturally oxidize the hair to black in a limited time in the air, so that the coloring effect is poor. At the same time, when indole is oxidized to form indolequinone, the density of hydroxyl groups decreases, thereby reducing the binding force with hair and affecting the dyeing effect.

[0004] The patent document CN113559017A discloses a hair dye based on copolymerization of 5,6-dihydroxyindole and 6-hydroxyindole, and a preparation method and use method thereof. The hair dye comprises 5,6-dihydroxyindole and 6-hydroxyindole, and the weight ratio of 5,6-dihydroxyindole to 6-hydroxyindole is 1-8:0.5-4. By adding 6-hydroxyindole to the hair dye, 6-hydroxyindole has no o-dihydroxybenzene structure and cannot undergo phenolic quinone isomerization, can effectively combine small molecule pigments, and makes the colored hair not fade after repeated washing. At the same time, the copolymerization of 5,6-dihydroxyindole and 6-hydroxyindole also does not destroy the π-π stacking in the indole polymer system, can bring about broad-spectrum absorption of the spectrum, and does not have any effect on the coloring effect. On the contrary, it can greatly improve the color retention, and also has good ultraviolet protection effect. The patent document CN87100820A discloses a method for dyeing keratin fibers with 5,6-dihydroxyindole combined with iodide and a dyeing composition used thereby. It is disclosed that the use of a composition containing iodide ions and 5.6-dihydroxyindole has a stabilizing effect on hair dyeing. The patent document CN114177114A discloses a low-cost high-efficiency antibacterial color one-dose hair dye and a preparation method thereof. The components of the hair dye are: 5,6-dihydroxyindole: 4% to 8%, tyrosine: 2% to 8%, cysteine: 3% to 8%, shellac red pigment: 0.5%, carbomer: 1% to 3%, hydroxyethylidene diphosphonic acid: 0.5% to 1%, sodium sulfite: 0.2% to 0.5%, 4-chlororesorcinol: 0.6%, 2,4-diaminophenol: 2% to 3%, m-aminophenol: 0.1%, triethanolamine: 10% to 20%, monoethanolamine: 0 to 10%, and water: balance. The antibacterial hair dyeing effect is achieved at a low price, and the dyeing and washing resistance of the colored hair are not affected. However, there are aniline and phenolic compounds. However, most of these hair dyes contain strong alkaline substances, and there are high carcinogenic and sensitizing risks of benzene diamine substances to hair and scalp. In addition, the coloring effect is not good enough. SUMMARY

[0005] In view of the problems in the prior art, the present application provides a hair care composition containing potassium iodide and a preparation method thereof, which improves the problems of non-obvious, non-uniform, and non-durable dyeing effect, and does not have the risk of strong alkaline substances damaging hair and scalp. The use of benzene diamine substances with high carcinogenic and sensitizing risks is avoided, the hair dyeing effect is more durable and more gentle, and the safety is higher.

[0006] The technical scheme of the present application is as follows:

[0007] A hair care composition containing potassium iodide, comprising an agent A and an agent B, wherein the agent A is a melanin gel and comprises, by mass percentage, 0.1% to 1% of 5,6-dihydroxyindole, 0.5% to 15% of potassium iodide, 0.01-0.1% of arginine, 1% to 10% of propylene glycol, 0.1% to 0.2% of sodium sulfite, 0.1% to 0.5% of ascorbic acid, 0.1% to 0.5% of xanthan gum, and the balance being water, the total mass percentage of each component being 100%;

[0008] The agent B is a shampoo, which includes, by mass percentage, 10% to 20% of sodium laureth sulfate, 5% to 10% of potassium persulfate, 1% to 5% of cocamidopropyl betaine, 1% to 5% of disodium lauroyl glutamate, 1% to 3% of decyl glucoside, 1% to 3% of cocamidomethyl MEA, 0.1% to 0.5% of guar hydroxypropyltrimonium chloride, 0.1% to 1% of sodium chloride, 0.1%-0.3% of citric acid, 0.1% to 0.5% of disodium EDTA, an appropriate amount of flavor and the remainder of water. The total mass percentage of each component is 100%.

[0009] Furthermore, the mass percentage of 5,6-dihydroxyindole in the agent A is 0.3%-0.8%.

[0010] Furthermore, the mass ratio of potassium iodide to 5,6-dihydroxyindole in the agent A is (5-12):1.

[0011] Furthermore, the mass percentage of potassium persulfate in the agent B is 5%-8%.

[0012] The present invention also provides a method for preparing a hair care composition containing potassium iodide, comprising the following steps:

[0013] S1. Add water, potassium iodide, sodium sulfite, and ascorbic acid into a reaction kettle and stir to dissolve completely until a uniform liquid is obtained;

[0014] S2. Then, the xanthan gum and propylene glycol are evenly dispersed and slowly added to the reactor, and stirred to dissolve completely until a uniform liquid is obtained;

[0015] S3, then add arginine to adjust the pH of the material;

[0016] S4, then adding 5,6-dihydroxyindole and mixing evenly to obtain agent A;

[0017] S5. Add water, sodium laureth sulfate, cocamidopropyl betaine, disodium lauroyl glutamate, and decyl glucoside to a reaction kettle, mix, heat, and stir until a uniform solution is formed;

[0018] S6, then the guar gum hydroxypropyltrimonium chloride and coconut amido methyl MEA are mixed and uniformly dispersed, and slowly added into the reaction kettle, and stirred and dissolved to form a uniform liquid;

[0019] S7, the disodium EDTA is added into the reaction kettle, and stirred and dissolved, and the pH is adjusted with citric acid;

[0020] S8, when the temperature is reduced to below 45 DEG C, sodium chloride, essence and potassium peroxodisulfate are added, and stirred to obtain B agent.

[0021] Further, the pH value in step S3 is adjusted to 6-7.

[0022] Further, the pH value in step S7 is adjusted to 5.4-6.0.

[0023] In addition, the application also provides a method for using the hair care composition containing potassium iodide, and the steps are as follows:

[0024] S1, the A agent black pigment jelly is uniformly applied to the hair, and then washed with clean water;

[0025] S2, then the hair is wiped to be half dry with a towel, and the B agent shampoo is uniformly applied to the hair, a small amount of water is sprayed, and the hair is rubbed for 5 minutes to generate rich foam, and then the hair is washed with clean water.

[0026] Further, the mass ratio of the A agent and the B agent is 1:1.

[0027] Further, the waiting time in step S1 is 25-35 min, and the standing time in step S2 is 15-20 min.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] 1, the hair care composition containing potassium iodide of the application is used by mixing the A agent black pigment jelly and the B agent shampoo according to the mass ratio of 1:1, the components are reasonably matched, and the mass ratio of potassium iodide and 5,6-dihydroxyindole is controlled to be (5-12):1 by mixing potassium iodide and 5,6-dihydroxyindole, which can effectively improve the stability of 5,6-dihydroxyindole, improve the problem that the hair dyeing effect is not obvious and uniform, and the dyeing is not durable, make the hair dyeing more natural and uniform, and the hair bundle is more smooth.

[0030] 2、The B agent in the hair care composition containing potassium iodide of the present application uses 5%-8% of potassium peroxydisulfate by mass percentage, which can play the role of oxidizing agent in the hair dyeing process, and promote 5,6-dihydroxyindole to play the role of dyeing black, because the 5,6-dihydroxyindole intermediate is still difficult to naturally oxidize the hair to black in a limited time in the air, so that the coloring effect is poor, and too low or too high amount of potassium peroxydisulfate will lead to weakening of the coloring effect of 5,6-dihydroxyindole.

[0031] 3、The A agent and the B agent in the hair care composition containing potassium iodide of the present application are both weakly acidic to neutral paste, and there is no risk of damage to the hair and scalp by strong alkaline substances, and the safety is higher.

[0032] 4、The moisturizing agent, thickening agent, surfactant, etc. in the hair care composition containing potassium iodide of the present application are all conventional components in hair dyes, and the amount used is also a conventional amount, which is convenient for industrialized production. DETAILED DESCRIPTION

[0033] The experimental methods not specified in the following examples of the present application are generally carried out under conventional conditions, or under the conditions recommended by the manufacturers. The various common chemical reagents used in the examples are all commercially available products.

[0034] To make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0035] Examples 1-4, hair care composition containing potassium iodide of the present application and preparation thereof

[0036] The weight ratio table of the hair care composition containing potassium iodide of the present application in Examples 1-4 is shown in Table 1 below:

[0037] Table 1 Weight ratio table of hair care composition containing potassium iodide of Examples 1-4 (mass percentage)

[0038]

[0039]

[0040] The preparation method of the hair care composition containing potassium iodide of the present application comprises the following steps:

[0041] S1, water, potassium iodide, sodium sulfite, ascorbic acid are added into a reaction kettle, and stirred and dissolved completely to a uniform liquid;

[0042] S2, the xanthan gum and propylene glycol are mixed and evenly dispersed, slowly added into the reaction kettle, and stirred and dissolved completely to form a uniform liquid;

[0043] S3, arginine is added to adjust the pH of the material to 6-7;

[0044] S4, 5, 6-dihydroxyindole is added and mixed evenly to obtain A agent.

[0045] S5, water, sodium lauryl polyether sulfate, cocamide propyl betaine, lauroyl glutamic acid disodium, and decyl glucoside are added into the reaction kettle, mixed and heated to 80-85℃, stirred for 10-15min, until a uniform solution is formed;

[0046] S6, guar gum hydroxypropyltrimethyl ammonium chloride and cocamide methyl MEA are mixed and evenly dispersed, slowly added into the reaction kettle, and stirred and dissolved to form a uniform liquid;

[0047] S7, disodium EDTA is added into the reaction kettle, stirred and dissolved completely, and the pH of the material is adjusted to 5.4-6.0 with citric acid;

[0048] S8, when the temperature is reduced to below 45℃, sodium chloride, essence, and potassium peroxodisulfate are added, stirred evenly, and then B agent is obtained.

[0049] The method for using the hair care composition containing potassium iodide of the present application comprises the following steps:

[0050] S1, evenly apply the A agent melanin jelly to the hair, wait for 25-35min, and then rinse with clean water;

[0051] S2, then use a towel to wipe the hair to be semi-dry, evenly apply the B agent shampoo with a mass ratio of 1:1 to the A agent melanin jelly to the hair, spray a small amount of water, rub for 5min to generate rich foam, stand for 15-20min, and then rinse with clean water thoroughly.

[0052] Preparation of a hair care composition containing potassium iodide in Comparative Examples 1-10

[0053] The weight ratio table of the hair care composition containing potassium iodide in Comparative Examples 1-10 is shown in Table 2, the preparation method and use method of Comparative Examples 1-8 are completely the same as those of Example 1, and the only difference compared with Example 1 is that: the mass percentage of potassium iodide in Comparative Example 1-2 is not 0.5%-15%, there is no potassium iodide in Comparative Example 3, the mass percentage of 5, 6-dihydroxyindole in Comparative Examples 4-5 is not 0.1%-1%, the mass ratio of potassium iodide to 5, 6-dihydroxyindole in Comparative Examples 6-7 is not (5-12):1, the mass percentage of potassium peroxodisulfate in B agent in Comparative Examples 8-9 is not 5%-8%, and there is no potassium peroxodisulfate in B agent in Comparative Example 10.

[0054] Table 2 Weight ratio table (in mass percent) of the hair care composition containing potassium iodide of Comparative Examples 1-10

[0055]

[0056]

[0057] Test Example 1, hair dyeing blackness test

[0058] 1. Test sample: 0.4 g of each of A and B agents in Examples 1-4 and Comparative Examples 1-10;

[0059] 2. Test method: 14 groups of white hair strands having an L value of 66.2 and a chroma of 10 were washed, and the test sample was applied to the white hair strands according to the use method, and then dried;

[0060] Evaluation method: the color difference meter was used for testing 3 times, and the average value was taken as the hair dyeing blackness, and the chroma was obtained by comparing the chroma plate. The blackness value of normal black hair ranges from 16 to 18, and the chroma ranges from 2 to 3. The smaller the L value or chroma, the darker the hair color;

[0061] 3. Test result: see Table 3 below

[0062] Table 3 Hair dyeing blackness value and chroma

[0063] Sample Hair dye blackness L value Chroma Example 1 18.4 3 Example 2 16.2 2 Example 3 18.6 3 Example 4 17.1 2 Comparative Example 1 30.7 4 Comparative Example 2 38.2 4 Comparative Example 3 42.6 4 Comparative Example 4 47.3 5 Comparative Example 5 37.4 4 Comparative Example 6 20.6 3 Comparative Example 7 25.2 3 Comparative Example 8 42.1 6 Comparative Example 9 48.3 7 Comparative Example 10 57.6 8

[0064] As can be seen from the test results in Table 3 above, Examples 1-4 of the present application all have good black dyeing effect, the hair strand blackness ranges from 16 to 19, and the chroma ranges from 2 to 3. The blackness value and chroma value of Comparative Examples 1-5 and Comparative Examples 8-10 are higher than those of Examples 1-4, which shows that the component ratio of the hair care composition containing potassium iodide of the present application is scientific and reasonable, the black color is more natural, more uniform, and more durable, and the hair is more smooth after use. The absence of any component or being out of the ratio range cannot achieve the ideal black dyeing effect.

[0065] Test Example 2 hair dyeing effect score

[0066] 1. Test sample: hair care composition of Examples 1-4 and Comparative Examples 6-9;

[0067] 2. Test method: 8 groups of hair strands dyed using the test sample were evenly combed for 5 min using a comb, and 10 professional experimenters were invited to score the coloring naturalness, coloring uniformity, and hair strand smoothness of the dyed hair strands according to a 5-point system, wherein: 5 points - excellent, 4 points - good, 3 points - general, 2 points - poor, and 1 point - very poor. The final average value was calculated;

[0068] 3. Test results:

[0069] Table 4 Hair dyeing effect score table

[0070] Sample Coloring naturalness Coloring uniformity Hair strand smoothness Example 1 4.8 4.9 4.7 Example 2 4.8 4.6 4.6 Example 3 4.7 4.5 4.6 Example 4 4.5 4.7 4.5 Comparative Example 6 3.5 3.5 3.9 Comparative Example 7 3.4 3.5 3.5 Comparative Example 8 3.4 3.2 3.5 Comparative Example 9 3.3 3.1 3.4

[0071] As can be seen from Table 4, the hair strand coloring naturalness, coloring uniformity and hair strand smoothness of the hair care compositions prepared from Examples 1-4 of the present application are all above 4.5, which are much higher than those of the hair dyes of Comparative Examples 6-9. It is shown that when the mass ratio of potassium iodide to 5,6-dihydroxyindole is (5-12): 1, the stability of 5,6-dihydroxyindole can be effectively improved, the coloring of 5,6-dihydroxyindole is promoted, the hair dyeing is more natural and uniform, and the hair strand is more smooth. When the mass percentage of peroxydisulfate in B agent is 5%-8%, the peroxydisulfate can act as an oxidizing agent in the hair dyeing process, and promote the hair dyeing effect of 5,6-dihydroxyindole. However, when the amount of peroxydisulfate is too low or too high, the coloring effect of 5,6-dihydroxyindole will be weakened.

[0072] Test Example 3 Test of hair dyeing effect durability

[0073] 1. Test sample: hair care compositions of Examples 1-4 and Comparative Examples 6-7;

[0074] 2. Test method: the blackness values of the six hair strands dyed using the hair care composition samples are determined first, then the hair strands are repeatedly washed with water and dried for six times, and the L value of each time is evaluated by a blackness instrument as the test of color fastness. The larger the L value is, the more the distance to black color is, and the more serious the hair strand discoloration is. The L value of each time is recorded.

[0075] 3. Test results:

[0076] Table 5 Blackness value of hair dyeing after washing

[0077]

[0078] As can be seen from Table 5, the change of the blackness value L of the hair strands prepared from the hair care compositions of Examples 1-4 of the present application after washing for six times is within 5, which is not very obvious, indicating that the hair strand discoloration is not very obvious. However, the change of the blackness value L of the hair strands of Comparative Examples 6-7 after washing for the first time is relatively large, which is increased by 7-10 compared with that after the hair dyeing is completed, indicating that the hair strand discoloration is relatively serious. After washing for six times, the blackness value L of the hair strands is increased by 13-18 compared with that after the hair dyeing is completed, indicating that the hair strand discoloration is very serious. It is shown that when the mass ratio of potassium iodide to 5,6-dihydroxyindole is controlled to be (5-12): 1, the stability of 5,6-dihydroxyindole can be effectively improved, and the hair care composition has good hair dyeing durability.

[0079] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A hair care composition comprising potassium iodide, characterized in that, The A agent is a melanin jelly, which comprises, by mass percentage, 5,6-dihydroxyindole 0.1%-1%, potassium iodide 0.5%-15%, arginine 0.01-0.1%, propylene glycol 1%-10%, sodium sulfite 0.1%-0.2%, ascorbic acid 0.1%-0.5%, xanthan gum 0.1%-0.5%, and water in a balance, with the mass percentage of each component totaling 100%. The B agent is a shampoo, which comprises, by mass percentage, sodium laureth sulfate 10%-20%, potassium peroxodisulfate 5%-10%, cocamidopropyl betaine 1%-5%, lauroyl glutamate disodium 1%-5%, decyl glucoside 1%-3%, cocamide methyl MEA 1%-3%, guar hydroxypropyltrimonium chloride 0.1%-0.5%, sodium chloride 0.1%-1%, citric acid 0.1-0.3%, disodium EDTA 0.1%-0.5%, essence in an appropriate amount, and water in a balance, with the mass percentage of each component totaling 100%.

2. The potassium iodide-containing hair care composition of claim 1, wherein, The mass ratio of potassium iodide to 5,6-dihydroxyindole in the A agent is (5-12):

1.

3. The potassium iodide-containing hair care composition of claim 1, wherein, The mass percentage of 5,6-dihydroxyindole in the A agent is 0.3%-0.8%.

4. A method for preparing a hair care composition containing potassium iodide according to any one of claims 1 to 3, characterized in that: The mass percentage of potassium peroxodisulfate in the B agent is 5%-8%. The method comprises the following steps: S1, water, potassium iodide, sodium sulfite, and ascorbic acid are added into a reaction kettle and stirred to dissolve completely into a uniform liquid; S2, then xanthan gum and propylene glycol are mixed and uniformly dispersed and slowly added into the reaction kettle, and stirred to dissolve completely into a uniform liquid; S3, arginine is then added to adjust the pH of the material; S4, 5,6-dihydroxyindole is then added and uniformly mixed to obtain the A agent; S5, water, sodium laureth sulfate, cocamidopropyl betaine, lauroyl glutamate disodium, and decyl glucoside are added into a reaction kettle, mixed, heated, and stirred until a uniform solution is formed; S6, then guar hydroxypropyltrimonium chloride and cocamide methyl MEA are mixed and uniformly dispersed, slowly put into the reaction kettle, and stirred to dissolve completely into a uniform liquid; S7, disodium EDTA is added into the reaction kettle, stirred to dissolve completely, and the pH is adjusted with citric acid; 5. The method of making a potassium iodide-containing hair care composition of claim 4, wherein, S8, when the temperature is lowered to below 45℃, sodium chloride, essence, and potassium peroxodisulfate are added, stirred uniformly, and the B agent is obtained.

6. The method of making a potassium iodide-containing hair care composition of claim 4, wherein, The pH value in step S3 is adjusted to 6-7.

7. A method of using a hair care composition containing potassium iodide as claimed in claims 1-3, characterized in that, The pH value in step S7 is adjusted to 5.4-6.

0. The method comprises the following steps: S1, the A agent melanin jelly is uniformly applied to the hair, and then washed clean with clean water; S2, then the hair is wiped to be half-dry with a towel, the B agent shampoo is uniformly applied to the hair, a small amount of water is sprayed, rubbed for 5 minutes to form rich foam, left to stand, and then washed clean with clean water; 8. The method of using a potassium iodide-containing hair care composition of claim 7, wherein, The mass ratio of the A agent to the B agent is 1:

1. The waiting time in step S1 is 25-35 minutes, and the standing time in step S2 is 15-20 minutes.

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