Silver ion-containing composition as well as preparation method and application thereof

Abstract

The invention discloses a silver ion-containing composition as well as a preparation method and application thereof. The composition comprises silver ions, a chelating agent and a dispersing agent, the chelating agent comprises any one or a combination of at least two of RCH (NH2) a (COOH) b, a polymer of RCH (NH2) a (COOH) b, an ammonium salt compound, tris (hydroxymethyl) aminomethane or a polymer of tris (hydroxymethyl) aminomethane, R is a side chain group of amino acid, and a and b are respectively and independently positive integers; the dispersing agent comprises any one or a combination of at least two of sodium citrate, polyvinylpyrrolidone or xanthan gum. The composition containing silver ions is designed, all the components are synergistic, the composition has very high affinity to protein, hair can be effectively dyed, the composition can be matched with a specific dyeing assistant and a passivator to develop a hair dyeing reagent combination, a strong synergistic effect is achieved, and the hair dyeing effect of the composition is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics and relates to a silver ion-containing composition and a preparation method and application thereof. Background Art

[0002] Protein is the basis of human life activities because it constitutes human organs and tissues, such as muscles and heart, and is also a physiologically active substance, such as various hormones, enzymes and antibodies in the body. It can be seen that the existence of protein is very important to the human body, so it is of great significance to explore the effects of substances on protein and what kind of effects they can bring to the human body.

[0003] For example, the main component of hair is the cortex, which is composed of slender cells parallel to the long axis of the hair. In these cells, there are tension filaments of about 10 mm and interfiber matrix. These components determine the main physiological and chemical properties of hair. The filaments are composed of fibrin, of which 50% of the protein is in a spiral structure, and the matrix is ​​composed of non-helical protein rich in cystine. The specific dyeing mechanism of traditional oxidative hair dyes is to allow low relative molecular mass oxidative dye intermediates and other components to penetrate into the middle of the hair, undergo oxidative polymerization in the hair to generate macromolecular dyes and be locked in the hair. However, the oxidative dye intermediates commonly used in this type of hair dyes are phenylenediamine, toluenediamine and their derivatives, and hydroquinone, aminophenol and their derivatives are used as auxiliary dyes. Phenylenediamine, hydroquinone and their derivatives are highly allergic and damaging to the health of the scalp or hair, so the application of this type of hair dye has gradually decreased. Silver ion hair dye is based on the fact that silver ions penetrate into the hair and are reduced to silver particles by light, thus dyeing the hair black. Silver ion hair dye does not contain ingredients such as diphenylamines, hydroquinones and their derivatives found in conventional oxidative hair dye products, so it is currently a widely used hair dye product that turns white to black. However, the current silver ion hair dye has a lot of room for improvement in terms of dyeing effect, such as the coloring is not strong, and the use process requires low-wavelength ultraviolet light to cause the silver ions to undergo photoreduction reaction to become silver particles to color the hair, which limits its application.

[0004] In summary, in-depth research on the interaction between silver ions and proteins and the development of silver ion compositions with strong protein binding ability are expected to be widely used in the fields of hair keratin color development, enhancing the biological activity of enzymes and antibodies, or solving skin diseases such as ringworm caused by bacteria, scalp redness and swelling, and dandruff. Summary of the invention

[0005] In view of the deficiencies in the prior art and actual needs, the present invention provides a silver ion-containing composition, a preparation method and an application thereof, and in particular provides a silver ion-containing composition with strong protein binding ability, a preparation method and an application thereof.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a silver ion-containing composition, which comprises silver ions, a chelating agent, and a dispersant;

[0008] The chelating agent includes any one or at least two combinations of RCH(NH2) a (COOH) b 、RCH(NH2) a (COOH) b polymers, ammonium salt compounds, tris(hydroxymethyl)aminomethane or polymers of tris(hydroxymethyl)aminomethane, wherein R is the side chain group of an amino acid; the dispersant includes any one or at least two combinations of sodium citrate, polyvinylpyrrolidone or xanthan gum.

[0009] In the present invention, a silver ion-containing composition is designed. By the synergy of each component, it has high stability, and at the same time has a strong affinity for proteins, can achieve the embedding of silver nanoparticles on proteins, and silver ions have bactericidal and catalytic effects. Therefore, it is expected to be widely used in the fields of hair keratin coloring, enhancing the biological activities of enzymes and antibodies, or solving skin diseases such as tinea caused by bacteria, scalp swelling, dandruff, etc.

[0010] Preferably, the composition further includes a booster.

[0011] Preferably, the booster includes any one or at least two combinations of Mn 2+ 、Al 3+ 、Cu 2+ 、Fe 2+ 、Fe 3+ or Au + 。

[0012] In the present invention, the use of metal ion boosters can further improve the stability of the composition and enhance the coloring effect of the composition.

[0013] Preferably, a and b are each independently natural numbers, such as 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9, etc.

[0014] In the present invention, in RCH(NH2) a (COOH) b , when R is H, a = 1, b = 1, it represents glycine; when R is HSO3, a = 1, b = 0, it represents taurine. For polymers, such as polylysine, when its structural formula is (C6H 12 N2O) nIt also meets the requirements of the above general formula. When the general formula has an amino group or ammonium group structure in the present invention, it has a coordination property for the nano-silver material and has a solubilizing effect. Moreover, as the number of such structures increases, the binding force between the silver material and the chelating agent becomes stronger.

[0015] Preferably, the RCH(NH2) a (COOH) b includes at least one of glycine, taurine, arginine, lysine, or polylysine, etc.

[0016] Further preferably, the chelating agent is glycine and tris(hydroxymethyl)aminomethane. The combined use of the two chelating agents has a significant effect on enhancing the stability of silver ions.

[0017] Preferably, the raw material of the silver ions includes any one or a combination of at least two of silver sulfate, silver lactate, silver oxide, or colloidal silver.

[0018] Preferably, the ammonium salt compounds include any one or a combination of at least two of ammonium lactate, ammonium citrate, ammonium sulfate, or ammonium malate.

[0019] Preferably, the average molecular weight of the polyvinylpyrrolidone can be 160,000 - 360,000.

[0020] Preferably, the mass ratio of silver ions, chelating agent, and dispersant in the composition is 1:(0.1 - 10):(0.1 - 5), including but not limited to 1:0.2:0.9, 1:0.5:0.5, 1:0.9:0.2, 1:3:0.4, 1:5:0.6, 1:8:3, 1:0.8:3, or 1:4:3, etc.

[0021] Preferably, the concentration of the enhancer in the composition is 0.2 - 100 ppm, including but not limited to 0.3, 0.4, 0.5, 1, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 98, or 99 ppm, etc.

[0022] In the second aspect, the present invention provides a preparation method of the silver ion-containing composition described in the first aspect. The preparation method includes:

[0023] Mixing the silver ions with the chelating agent and the dispersant to obtain the composition.

[0024] In the third aspect, the present invention provides an application of the silver ion-containing composition described in the first aspect in the preparation of hair dyes.

[0025] In the present invention, based on the silver ion-containing composition, it has a strong affinity for proteins, and further develops its application in hair dyeing.

[0026] Fourthly, the present invention provides a hair dye, which comprises the silver ion-containing composition described in the first aspect.

[0027] In the present invention, it is found that the pH value is helpful for the formation of silver nanoparticles. Through experimental comparison under different pH conditions, it is found that when the pH of the system is in the range of 4-9, preferably pH = 5-7, the hair color change is most obvious under light. The reason is that at this pH value, the growth rate of silver nanoparticle crystal nuclei is the fastest and the particle size is also small. Among them, the silver ion composition cannot coexist with strongly reducing substances, such as vitamin C; it cannot be compounded with strongly oxidizing substances, such as hydrogen peroxide. It cannot be compounded with chloride ions, such as sodium chloride and behenyl trimethyl ammonium chloride. Compounding raw materials: cetearyl alcohol, glycerol monostearate, Tween, glycerol, propylene glycol, behenyl trimethyl ammonium sulfate, phenoxyethanol, xanthan gum, carbomer, sodium dodecyl sulfate, sodium laureth sulfate, methyl glucoside polyoxyethylene ether dioleate.

[0028] Silver ions can bind well with hair. However, since most of the raw materials providing silver ions are not highly water-soluble, it is impossible to increase the concentration of silver ions, and the formulation is very unstable, resulting in the need for a long time cycle for some silver ion hair dye products to achieve hair coloring. In the present invention, it is considered that silver ions can react or complex with certain groups or elements. It is found that coordination complexes can be formed by using silver metal and corresponding groups such as amino group, ammonium group, and hydroxyl group, which are stably soluble in water. During the contact with hair, since hair also has peptide bonds and provides a solid medium for the formation of silver nanoparticles from silver ions, a competitive effect can cause the complex to slowly release silver ions to form silver nanoparticles, which slowly and fully bind to the hair. If you want to accelerate the binding of silver nanoparticles and hair, light can be added to accelerate the binding. In addition, the present invention also finds that the process of binding silver ions to keratin and the transformation of silver nanoparticles is essentially a process of potential change. The participation of some metal ions with catalytic activity, even at a very low concentration, can reduce the energy required between them, accelerate the transformation speed, and also provide another crystal nucleus for the formation of silver nanoparticles from silver ions, resulting in different particle sizes and structures of the formed silver nanoparticle crystal nuclei. In the present invention, by using trace amounts of metal ions to participate in the reaction, the spherical particle size of the formed silver nanoparticle crystal nuclei is about 10 - 30 microns. The smaller the nanoparticle size, the easier it is to adhere to the hair, and the silver nanoparticle film is denser. Among them, sodium citrate and polyvinylpyrrolidone in the dispersant have reducibility and can coexist with the chelated silver ions. When silver ions are released upon exposure to light or contact with hair, they react with the silver ions at this time, so that the generated silver nanoparticle particles do not agglomerate but are uniformly dispersed on the hair in the form of particles. Polyvinylpyrrolidone has film-forming properties and can form a dense nanometer film on the hair, increasing the action time of silver ions on the hair. Therefore, using this combination can achieve strong physical and chemical binding between silver nanoparticles and keratin in hair.

[0029] Fifthly, the present invention provides a hair dye combination. The hair dye combination includes the hair dye, the co-dyeing agent, and the passivating agent described in the fourth aspect; the co-dyeing agent is selected from any one or a combination of at least two of gallic acid, sappanwood extract, polygonum multiflorum extract, pomegranate peel extract, gardenia extract, black bean extract, persimmon leaf extract, and licorice extract; the passivating agent is selected from any one or a combination of at least two of sodium sulfide, polysulfide, sodium dithionite, thiosulfate, sulfite, sulfate, pyrosulfate, persulfate, and sulfur-containing organic substances such as cysteine, methionine, and cystine.

[0030] Preferably, the concentration of gallic acid in the mordant is 1% to 5%, including but not limited to 1.2%, 1.4%, 1.6%, 1.8%, 2%, 2.2%, 2.5%, 2.6%, 2.8%, 3, 3.5%, 4%, 4.2%, 4.5%, 4.6%, 4.8% or 4.9%; the concentration of sodium sulfide in the passivating agent is 0.01% to 1%, including but not limited to 0.02%, 0.03%, 0.05%, 0.1%, 0.2%, 0.5%, 0.6%, 0.7%, 0.8% or 0.9%.

[0031] In the present invention, the passivating agent is a compound capable of providing sulfur elements. Due to the active nature of silver, when silver adheres to the hair, it may react with some factors in daily life, resulting in a change in the properties of silver nanoparticles or being taken away from the hair, causing the binding force of the composition to hair keratin to decrease. Sulfur can react with silver to form a passivation reaction, enabling it to stay stably on hair keratin. The passivating agents used in the present invention include but are not limited to at least one of the following metal sulfides, polysulfides, sodium dithionite, thiosulfate, sulfite, sulfate, pyrosulfate, persulfate, and sulfur-containing organic substances such as cysteine, methionine, and cystine. Preferably, they are sodium sulfide, polysulfide, or thiosulfate.

[0032] In the present invention, the mordant is a plant component capable of achieving dyeing, including but not limited to at least one of gallnut extract, sappanwood extract, fleeceflower root extract, pomegranate peel extract, gardenia extract, black bean extract, persimmon leaf extract, and licorice extract. Preferably, gallnut extract, sappanwood extract, or fleeceflower root extract is used. Because the above plant components contain rich polyphenols or tannic acid, such groups can form coordination complexes with metal ions. There are also many plant hair dye products on the market that use these plants for hair dyeing, but often the blackening and coloring effects of such products are not obvious. However, after treating the hair with the silver ion composition first, the hair has already changed color at this time, and not only are there silver nanoparticles wrapping the hair, but also silver ions are combined with the keratin in the hair. At this time, the polyphenol structure in the plant dye reacts with silver ions to form a complex reaction, and the silver nanoparticles catalyze and accelerate this process. Under the dual action of these two conditions, plant hair dyeing can be truly achieved, and the process of hair turning from white to black can be accelerated. Therefore, the silver ion composition and the plant dye in the present invention have a synergistic effect on hair coloring, which can make the hair color deeper and the combination firm and not easy to fade. In addition, other colored plant components can also be used, such as the red of madder and the yellow of turmeric. On the basis of the silver ion composition, by combining different types of plant components, hair of various colors can be dyed.

[0033] In the present invention, after silver ions are combined with keratin on white hair, they rely on the reduction of silver ions to turn black. With specific hair dyes and passivating agents, a synergistic effect is achieved, thereby quickly turning white hair black, and enabling the pigment groups to stably exist on the hair. It does not contain chemical hair dyes such as diphenylamine and phenol, is safe and green, and solves the drawback that the plant dyes in pure plant hair dyes on the market do not bind firmly to the hair, resulting in fading during daily hair washing and other operations. The process of truly turning white hair black realizes the goal of being green and healthy.

[0034] In a sixth aspect, the present invention provides a hair dyeing method, which includes:

[0035] Using the hair dye described in the fourth aspect or the hair dyeing combination agent described in the fifth aspect for hair dyeing.

[0036] The specific hair dyeing process is as follows: evenly apply the silver ion composition (i.e., the first agent) on the hair. Under the condition of no light, it should stay on the hair for at least 30 minutes to 2 hours. In principle, the longer the first agent stays on the hair, the better. The effect is better under light, such as after being irradiated by the sun during outdoor sports, and it can be used during the day. Then use the hair dye (i.e., the second agent), and stay on the hair for at least 30 minutes. In principle, the longer the residence time, the better. It can be used as a product for use at night. At this time, one hair dyeing cycle has been completed, and the hair has changed color. After starting the second cycle, due to the continuous participation of silver ions in the reaction and the enrichment of silver nanoparticles on the hair, it can be found that the hair has become the same as normal black hair during the second cycle. At this time, a passivating agent can be used or the first two agents can be used continuously to achieve the purpose of color locking or color fixation.

[0037] Under the condition of light, the hair dyeing effect will be better because silver ions are very sensitive to light, and light also has a denaturing effect on hair keratin at a specific wavelength, which can cooperate with silver ions to bind to hair keratin. Therefore, a wavelength range of 320 - 460 nm, preferably 360 - 425 nm, is used as the light condition of the present invention. Under the light condition, evenly apply the first agent on the hair for at least 5 minutes. At this time, the white hair has turned black. Then, a second agent such as shampoo or hair conditioner can be used and stay for at least 5 minutes. Reapply the first agent under the light condition to deepen the color and fix the color. At this time, the white hair has been covered and is the same as normal black hair. Finally, washing the hair with a passivating agent-containing product can complete the dyeing.

[0038] As can be seen from the above steps, the hair dyeing composition of the present invention has strong flexibility. The reason is that the nano-composition of the present invention has a strong adsorption force on hair keratin, resulting in an additional metal binding site on hair keratin and having strong catalytic activity, which accelerates the linking of plant dyes with hair keratin. Therefore, the various preparations of the present invention can be made into different composition forms, including but not limited to emulsion, liquid cream, mucus, and liquid forms. The liquid form is not limited to only being made into one dose, but can also be made into two doses or even more. For example, the co-dyeing agent can form one dose with the passivating agent, the silver ion composition is one dose, or each can be one dose. In addition, adding oil components or ionic surfactant components can synergistically enhance the binding force of the silver ion composition to the hair. Oil components generally carry reducing groups, so such groups can react with silver ions. And due to the affinity of oil for hair, it can also carry silver ions to contact hair more closely. Ionic surfactants, because of their ionic nature, also have the ability to denature proteins. This ability can relax the cutin layer of hair, making it easier for the silver ion composition to bind to the keratin inside the hair.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention designs a composition containing silver ions. Each component synergistically has a strong affinity for proteins. It does not contain chemical hair dyes such as diphenylamine and phenol, is safe and green, can effectively dye hair, and can develop a hair dyeing reagent combination in cooperation with specific co-dyeing agents and passivating agents, with a strong synergistic effect, significantly improving the hair dyeing effect, and providing a hair dyeing product that can achieve one-time coloring and firm pigmentation without relying on irritating chemical components. Description of the Drawings

[0041] Figure 1 It is a test result diagram of the hair dyeing effect in Example 2;

[0042] Figure 2 It is a test result diagram of the hair dyeing effect in Example 3. Detailed Embodiments

[0043] To further illustrate the technical means and effects adopted by the present invention, the present invention will be further described below in conjunction with examples and drawings. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0044] For those not specifying specific techniques or conditions in the examples, they shall be in accordance with the techniques or conditions described in the literature in this field or in accordance with the product instructions. For reagents or instruments not indicating the manufacturer, they are all conventional products that can be obtained through regular channels.

[0045] The composition described in the present invention has a very efficient and green protein binding ability. When used in the field of hair dyeing with some additives, it has a strong synergistic effect, which significantly improves the hair dyeing effect. It is a real breakthrough in this field of hair dyeing and has completed a hair dyeing product that can achieve one-time coloring and strong pigment without relying on irritating chemical ingredients.

[0046] Example 1

[0047] This embodiment designs a formula of a composition containing silver ions, taking silver sulfate as an example of a silver ion raw material.

[0048] 1. Optimal ratio of silver sulfate and glycine

[0049] Different ratios of silver sulfate and glycine were designed and solubility experiments were carried out. The results are shown in Table 1.

[0050] Table 1

[0051]

[0052]

[0053] It can be seen from Table 1 that when the molar ratio of silver ions to glycine is lower than 0.174 (the mass percentage of silver sulfate is 1%, and the mass percentage of glycine is greater than 4%), the mixture is completely soluble and presents a light yellow translucent state.

[0054] The solubility of different chelating agents was analyzed, and the results are shown in Table 2. As can be seen from Table 2, a variety of chelating agents can be mixed and dissolved with silver ions.

[0055] Table 2

[0056]

[0057]

[0058] 2. Hair dyeing effect experiment

[0059] A solution with a silver sulfate concentration of 1% was prepared, and the glycine concentration in the solution was as shown in Table 3. The bleached hair tresses were measured using a colorimeter, and blank correction was performed. The bleached hair tresses were immersed in the solution for 1 minute, and the bleached hair tresses were taken out, rinsed with clean water for 30 seconds, and blow-dried with a hair dryer. The dried bleached hair tresses were placed under a 425-nanometer ultraviolet lamp for 10 minutes. The bleached hair tresses were measured using a colorimeter to obtain ΔE (color difference before and after dyeing), and n represented the number of test hair tresses. The experimental results are shown in Table 3.

[0060] Table 3

[0061] Molar ratio (silver ion: glycine) Mass percentage of silver sulfate Mass percentage of glycine Spring color value (ΔE, n = 5) 0.174 1 4 53.4±3.7 0.139 1 5 57.8±6.1 0.116 1 6 49.3±2.9 0.0994 1 7 52.6±5.8

[0062] As can be seen from Table 3, after the molar ratio of silver sulfate to glycine reaches the optimal dissolution ratio, increasing the concentration of glycine fails to produce a more significant coloring effect on the bleached hair bundles. Therefore, the molar ratio of silver sulfate to glycine of 0.174 (mass ratio of 1:4) is the optimal dissolution ratio and coloring ratio.

[0063] In addition, in this embodiment, a specific chelating agent combination is designed, and the molar ratio is further designed for dissolution experiments. The results are shown in Tables 4 and 5. When glycine and Tris are used in combination, the solution is light yellow and translucent after standing, indicating that the combination of tris(hydroxymethyl)aminomethane (Tris) and glycine can further enhance the stability of silver ions.

[0064] Table 4

[0065]

[0066] Table 5

[0067]

[0068]

[0069] 3. Design of enhancers

[0070] To enhance the coloring effect of the composition, an enhancer is further designed. By adding metal ions, the silver nanoparticles in the coloring process are modified. A solution with a silver sulfate concentration of 1%, a glycine concentration of 4%, and a Tris concentration of 2% is prepared, and different metal ions are added to the solution respectively. The hair dyeing effect experiments are carried out with each solution: the solution is applied to the hair bundles and washed off with pure water after staying for 5 minutes. Table 5 shows the selected metal ions and their enhancement effects (the molar ratio of silver sulfate to glycine is 0.174). It can be seen that at the same concentration (1 ppm), divalent manganese ions have the best effect on enhancing the color.

[0071] Table 6

[0072] Metal ion Concentration Spring color value (ΔE, n = 5) p-value / / 53.4±3.7 / <![CDATA[Mn 2+ > 1 ppm 67.2±2.9 0.032 <![CDATA[Al 3+ > 1 ppm 57.7±3.1 0.049 <![CDATA[Cu 2+ > 1 ppm 62.3±5.5 0.043 <![CDATA[Fe 2+ > 1 ppm 65.3±2.7 0.038 <![CDATA[Fe 3+ > 1 ppm 66.8±2.1 0.035 <![CDATA[Au + > 1 ppm 58.9±4.5 0.048

[0073] Design of enhancer concentration

[0074] To investigate the optimal concentration of manganese ions in the system, a concentration gradient is set for testing. The results are shown in Table 7 (the molar ratio of silver sulfate to glycine is 0.174). It can be seen that when the manganese ion concentration is 0.2 - 1 ppm, the coloring effect of the solution is better than that without adding the enhancer, and it will not have an adverse effect on the solution stability.

[0075] Table 7

[0076]

[0077] According to the above design, the formulation of the silver ion-containing composition can be as shown in Tables 8 to 28.

[0078] Table 8

[0079] Raw material name Content Silver ion raw material (can be silver sulfate, silver lactate, silver oxide or colloidal silver) 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Manganese sulfate 1 ppm Polyvinylpyrrolidone (average molecular weight 160,000 - 360,000) 0.1％ Xanthan gum 1.5％ Sodium citrate 2％

[0080] Table 9

[0081]

[0082]

[0083] Table 10

[0084] Raw material name Mass percentage Silver sulfate 1％ Glycine 1％ Xanthan gum 1.5％ Sodium citrate 1％

[0085] Table 11

[0086] Raw material name Mass percentage Silver sulfate 1％ Glycine 2％ Xanthan gum 1.5％ Sodium citrate 1％

[0087] Table 12

[0088] Raw material name Mass percentage Silver sulfate 1％ Glycine 3％ Xanthan gum 1.5％ Sodium citrate 1％

[0089] Table 13

[0090]

[0091]

[0092] Table 14

[0093] Raw material name Mass percentage Silver sulfate 1％ Glycine 5％ Xanthan gum 1.5％ Sodium citrate 1％

[0094] Table 15

[0095] Raw material name Mass percentage Silver sulfate 1％ Glycine 6％ Xanthan gum 1.5％ Sodium citrate 1％

[0096] Table 16

[0097] Raw material name Mass percentage Silver sulfate 1％ Glycine 7％ Xanthan gum 1.5％ Sodium citrate 1％

[0098] Table 17

[0099]

[0100]

[0101] Table 18

[0102] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0103] Table 19

[0104] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Manganese sulfate 1 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0105] Table 20

[0106]

[0107]

[0108] Table 21

[0109] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 0.2％ Copper sulfate 1 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0110] Table 22

[0111] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 0.2％ Ferrous sulfate 1 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0112] Table 23

[0113]

[0114]

[0115] Table 24

[0116] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 0.2％ Gold sulfate 1 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0117] Table 25

[0118] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Manganese sulfate 10 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0119] Table 26

[0120] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Manganese sulfate 50 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0121] Table 27

[0122] Raw material name Mass percentage Silver sulfate 1％ Glycine 4％ Tris(hydroxymethyl)aminomethane 2％ Manganese sulfate 100 ppm Polyvinylpyrrolidone 0.1％ Xanthan gum 1.5％ Sodium citrate 1％

[0123] Table 28

[0124]

[0125]

[0126] Example 2

[0127] This example designs a dyeing assistant.

[0128] In this example, gallic acid was used as a mordant. Without affecting the activity of gallic acid, it was made into a hair conditioner system (the formula is shown in Table 29 and was prepared by dissolving it in water in sequence), and was paired with the first agent (in Example 1, a silver ion-containing composition was designed, and the components are shown in Table 8, and the silver ion raw material is silver sulfate). As the second agent, it can deepen the color while also having a hair care effect. A hair dyeing effect experiment was carried out: the dye and the mordant were applied to the hair strands in sequence, left for 5 minutes, and then rinsed with water for 5 minutes to wash off. Among them, Group A used the composition alone; Group B used the mordant alone; Group C used the mordant first and then the composition; Group D used the composition first and then the mordant. The results are as Figure 1 shown (* indicates p < 0.05, n.s. indicates p > 0.05). It can be seen that the mordant with gallic acid as the core can effectively improve the dyeing effect of the composition.

[0129] Table 29

[0130]

[0131]

[0132] Example 3

[0133] In this example, a passivator was designed.

[0134] Sodium sulfide was used as the sulfur source for passivating nano-silver. A very low concentration can achieve the passivation effect, and sodium sulfide was also added to skin care products as an antioxidant and is a green-label ingredient. The passivator was made into a shampoo as an auxiliary hair dyeing product. This agent can be used as a color fixative, and its function is to accelerate the passivation of nano-silver and can also react with nano-silver to form more stable sodium sulfide to stabilize the color.

[0135] To evaluate the color retention after hair dyeing, the hair strands that had used the composition and then the mordant (referring to Example 2) were treated with the passivator (Table 30). The passivator was applied to the hair strands, left for 5 minutes, and then washed 10 times with water, 5 minutes each time, with gentle rubbing during this period to simulate daily hair washing. Subsequently, a color difference meter was used to detect the hair strands, and the change before and after washing was calculated. The experimental results are as Figure 2 shown. In the figure, Group A used the passivator after using the composition + mordant for hair dyeing; Group B did not use the passivator after using the composition + mordant for hair dyeing. Therefore, the passivator with sodium sulfide as the core can effectively improve the color fixation effect after using the composition and the mordant for hair dyeing.

[0136] Table 30

[0137] Raw material name Mass percentage Sodium sulfide 1％ Lactic acid 0.8％ Glycerol 5％ Cocamidopropyl hydroxysulfonate 2％ Xanthan gum 1％

[0138] In summary, the present invention designs a silver ion-containing composition. Each component works synergistically, has a strong affinity for proteins, and is a chemical hair dye without diphenylamine and phenol. It is safe and green, can effectively dye hair, and can be combined with specific co-dyeing agents and passivating agents to develop a hair dye reagent combination with a strong synergistic effect, significantly improving the hair dyeing effect. It provides a hair dye product that can achieve single-step coloring and firm pigmentation without relying on irritating chemical components.

[0139] The applicant declares that the present invention uses the above embodiments to illustrate the detailed method of the present invention, but the present invention is not limited to the above detailed method, that is, it does not mean that the present invention must rely on the above detailed method to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent substitution of each raw material of the product of the present invention, the addition of auxiliary components, and the selection of specific methods, etc., all fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A silver ion-containing composition, characterized in that: The composition includes silver ions, a chelating agent and a dispersant; The chelating agent includes RCH(NH2) a (COOH) b 、RCH(NH2) a (COOH) b Any one or a combination of at least two of a polymer of, ammonium salt compounds, tris(hydroxymethyl)aminomethane or a polymer of tris(hydroxymethyl)aminomethane, wherein R is a side chain group of an amino acid; The dispersant includes any one of sodium citrate, polyvinyl pyrrolidone or xanthan gum, or a combination of at least two of them.

2. The silver ion-containing composition according to claim 1, characterized in that The composition also includes an enhancer; Preferably, the reinforcing agent comprises Mn 2+ 、Al 3+ , Cu 2+ , Fe 2+ , Fe 3+ or Au + Any one or a combination of at least two.

3. The silver ion-containing composition according to claim 1 or 2, characterized in that: The RCH(NH2) a (COOH) b including at least one of glycine, taurine, arginine, lysine or polylysine; Preferably, the raw material of the silver ion includes any one of silver sulfate, silver lactate, silver oxide or colloidal silver, or a combination of at least two thereof; Preferably, the ammonium salt compound includes any one of ammonium lactate, ammonium citrate, ammonium sulfate or ammonium malate, or a combination of at least two of them.

4. The silver ion-containing composition according to any one of claims 1 to 3, characterized in that The mass ratio of silver ions, chelating agent and dispersant in the composition is 1:(0.1-10):(0.1-5).

5. The silver ion-containing composition according to claim 2, characterized in that: The concentration of the enhancer in the composition is 0.2-100 ppm.

6. The method for preparing the silver ion-containing composition according to any one of claims 1 to 5, characterized in that: The preparation method comprises: Silver ions are mixed with a chelating agent and a dispersing agent to obtain the composition.

7. Use of the silver ion-containing composition according to any one of claims 1 to 5 in the preparation of hair dyes.

8. A hair dye, characterized in that: The hair dye comprises the silver ion-containing composition according to any one of claims 1 to 5.

9. A hair dye composition, characterized in that: The hair dyeing composition comprises the hair dyeing agent, a dyeing auxiliary and a passivating agent as claimed in claim 8; The dyeing aid is selected from any one or a combination of at least two of gallic acid, hematoxylin precursor, Polygonum multiflorum extract, pomegranate peel extract, gardenia extract, black bean extract, persimmon leaf extract or licorice extract; The passivating agent is selected from any one or a combination of at least two of metal sulfides, polysulfides, sodium dithionite, thiosulfate, sulfite, sulfate, pyrosulfate, persulfate or sulfur-containing organic matter.

10. A hair dyeing method, characterized in that: The hair dyeing method comprises: Hair dyeing is performed using the hair dye according to claim 8 or the hair dye combination according to claim 9.

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