Non-oxidation type coloring composition and application thereof

Abstract

The invention discloses a non-oxidation type coloring composition and application thereof, and relates to the technical field of daily chemical products. The non-oxidative coloring composition comprises the following components: an acid dye, a rheology modifier, an acid regulator and a hair conditioner. The weight ratio of the acid dye to the rheological modifier to the acid regulator to the hair conditioner is (0.4 to 5) to (1.2 to 3.6) to (1.5 to 4) to (0.2 to 0.45). According to the non-oxidation type coloring composition and the application thereof, the components in the composition cooperate with each other to play a synergistic role, so that pigments can be adsorbed and deposited on the surface of hair, and the non-oxidation type coloring composition has excellent color persistence, color uniformity and anti-staining property, is mild and non-irritating, and also has a certain conditioning and repairing effect on the hair. The non-oxidation type coloring composition provided by the invention can be applied to non-oxidation type hair dyes, including semi-permanent type hair dyes and temporary hair dyes.

Description

Technical Field

[0001] This invention relates to the field of daily chemical product technology, and in particular to a non-oxidative coloring composition and its application. Background Technology

[0002] In recent years, with the increasing demands for personal image, the market demand for hair dyeing and hair coloring products has continued to grow. Oxidative hair dyes do not contain the dyes themselves, but rather dye intermediates and coupling agents. These intermediates and coupling agents penetrate the hair cortex, undergoing oxidation, coupling, and condensation reactions to form larger dye molecules that are trapped within the hair fibers, thus achieving long-lasting color. However, these products typically contain amines or phenolic compounds, which can irritate the scalp and easily trigger allergic reactions. Furthermore, these hair dyes cause significant damage to the hair, resulting in dryness, frizz, poor combability, and dullness. Non-oxidative hair dyes primarily color the hair by penetrating and adsorbing the dye onto the hair surface. These dyes cause less chemical damage to the hair. However, compared to oxidative hair dyes, non-oxidative hair dyes have poorer wash resistance, are more prone to staining clothing or skin, are more likely to transfer color, have slightly weaker gray coverage (especially for coarse gray hair), and are more prone to uneven coloring, fading, and an unnatural hair makeup look.

[0003] To address the shortcomings of non-oxidative hair dyes, various technical solutions have been researched. For example, patent CN112770721B discloses a hair dye composition that reduces contamination to the user's surroundings, clothing, and skin during the application and storage process, while improving dyeing performance. Another patent, CN101820856B, discloses a non-oxidative hair dye composition with excellent shampoo fastness. Yet another patent, CN11067525B, discloses an oil-based hair coloring agent with excellent water resistance and color transfer resistance, and which is easily washed away with shampoo. These patents primarily improve the dyeing performance of non-oxidative hair dyes by reducing staining, improving wash resistance, and reducing color transfer. However, they have limitations in terms of color uniformity, the naturalness of the hair's finish, and applicability in various scenarios. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to overcome the shortcomings of the prior art and provide a non-oxidative coloring composition and its application. The components in this composition work together to exert a synergistic effect, enabling the pigment to be adsorbed and deposited on the hair surface. This results in excellent color longevity, color uniformity, stain resistance, gentleness and non-irritation, and also provides a certain conditioning and repairing effect on the hair, making the hair makeup look more natural.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, a non-oxidative coloring composition is provided, comprising the following components: an acid dye, a rheology modifier, an acid regulator, and a hair conditioning agent;

[0007] The rheology modifier is selected from three or more of hydroxyethyl cellulose, xanthan gum, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, and sodium hyaluronate.

[0008] The hair conditioning agent is selected from at least one of lauryltrimethylammonium chloride, cetrimonium chloride, stearyltrimethylammonium chloride, bis-PEG-15 methyl ether polydimethylsiloxane, PEG-12 polydimethylsiloxane, and bis-PEG-18 methyl polyether siloxane.

[0009] Preferably, the non-oxidative coloring composition comprises the following components by weight percentage: 0.5-1.5% acid dye, 1.0-4.5% rheology modifier, 1.0-4.5% acid modifier, and 0.1-0.8% hair conditioning agent.

[0010] Preferably, the non-oxidative coloring composition comprises the following components by weight percentage: 0.8-1.0% acid dye, 1.2-3.5% rheology modifier, 1.5-4% acid modifier, and 0.25-0.4% hair conditioning agent.

[0011] Preferably, the molecular weight of the polyvinylpyrrolidone is 30,000 to 90,000; the molecular weight of the vinylpyrrolidone-vinyl acetate copolymer is 20,000 to 80,000; and the molecular weight of the sodium hyaluronate is 100 kDa to 600 kDa.

[0012] Preferably, the molecular weight of the polyvinylpyrrolidone is 40,000 to 80,000; the molecular weight of the vinylpyrrolidone-vinyl acetate copolymer is 40,000 to 70,000; and the molecular weight of the sodium hyaluronate is 200 kDa to 400 kDa.

[0013] Furthermore, the weight ratio of the acid dye, rheology modifier, acid regulator, and hair conditioner is (0.4-5):(1.2-3.6):(1.5-4):(0.2-0.45).

[0014] Furthermore, the acid dye is a water-soluble acid dye containing at least one sulfonic acid group, and the molecular weight of the acid dye is 300 to 800.

[0015] Preferably, the acid dye is one or more of the following: Acid Orange 7 (CI 15510), Acid Black 1 (CI 20470), Acid Violet 43 (CI 60730), Acid Green 25 (CI 61570), Acid Red 88 (CI 15620), Acid Orange 10 (CI 16230), Acid Blue 62 (CI 62045), Food Yellow 4 (CI 19140), Food Blue 2 (CI 42090), Food Red 12 (CI 17200), and Food Blue 1 (CI 73015).

[0016] Furthermore, the acidity regulator is selected from at least one of citric acid, lactic acid, acetic acid, gluconolactone, succinic acid, salicylic acid, tartaric acid, oxalic acid, and maleic acid.

[0017] In a second aspect, a semi-permanent non-oxidative hair dye is provided, comprising the non-oxidative coloring composition described in the first aspect, an organic solvent, a preservative, a stabilizer, a fragrance, and deionized water.

[0018] Furthermore, the semi-permanent non-oxidative hair dye is composed of the following components in weight percentage: 2-15% non-oxidative coloring composition, 5-30% organic solvent, 0.4-1.5% preservative, 0.2-2.5% stabilizer, 0.05-1.0% fragrance, and the balance being deionized water; the pH value of the non-oxidative coloring composition is 2.5-3.5.

[0019] Preferably, the semi-permanent non-oxidative hair dye is composed of the following components in weight percentage: 2-10% non-oxidative coloring composition, 5-25% organic solvent, 0.4-1.0% preservative, 0.2-1.5% stabilizer, 0.1-0.5% fragrance, and the balance being deionized water.

[0020] Preferably, the semi-permanent non-oxidative hair dye is composed of the following components in weight percentage: 2-7% non-oxidative coloring composition, 5-20% organic solvent, 0.4-1.0% preservative, 0.2-1.0% stabilizer, 0.1-0.5% fragrance, and the balance being deionized water; the pH value of the non-oxidative coloring composition is 2.5-3.5.

[0021] Furthermore, the organic solvent is selected from two or more of ethanol, glycerol, propylene glycol, butanediol, benzyl alcohol, phenoxyethanol, and ethylene glycol monobenzyl ether; the preservative is selected from two or more of phenoxyethanol, p-hydroxyacetophenone, sodium benzoate, gluconolactone, benzoic acid, pentanediol, and hexanediol; and the stabilizer is selected from at least one of acrylate copolymers, styrene / acrylate copolymers, polyethylene glycol-2M, polyethylene glycol-9M, and polyethylene glycol-14M.

[0022] Thirdly, a temporary non-oxidative hair dye is provided, comprising the non-oxidative coloring composition described in the first aspect, a film-forming agent, an organic solvent, a preservative, a stabilizer, a fragrance, and deionized water.

[0023] Furthermore, the temporary non-oxidative hair dye is composed of the following components in weight percentage: 5-20% non-oxidative coloring composition, 1-10% film-forming agent, 5-30% organic solvent, 0.4-1.5% preservative, 0.2-2.5% stabilizer, 0.05-1.0% fragrance, and the balance being deionized water; the pH value of the non-oxidative coloring composition is 3.6-7.0.

[0024] Preferably, the temporary non-oxidative hair dye is composed of the following components in weight percentage: 5-15% non-oxidative coloring composition, 1-8% film-forming agent, 5-20% organic solvent, 0.4-1.2% preservative, 0.2-1.5% stabilizer, 0.05-0.8% fragrance, and the balance being deionized water.

[0025] Preferably, the temporary non-oxidative hair dye is composed of the following components in weight percentage: 5-12% non-oxidative coloring composition, 2-8% film-forming agent, 5-15% organic solvent, 0.4-1.0% preservative, 0.2-1.0% stabilizer, 0.05-0.5% fragrance, and the balance being deionized water.

[0026] Furthermore, the film-forming agent is selected from at least one of acrylate copolymers, styrene / acrylate copolymers, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymers, and hydrolyzed corn starch; the organic solvent is selected from at least one of ethanol, glycerol, propylene glycol, butanediol, benzyl alcohol, phenoxyethanol, and ethylene glycol monobenzyl ether; the preservative is selected from two or more of phenoxyethanol, p-hydroxyacetophenone, sodium benzoate, gluconolactone, benzoic acid, pentylene glycol, hexanediol, and ethylhexylglycerin; and the stabilizer is selected from at least one of cetearyl alcohol polyether-20 and cetearyl alcohol polyether-25.

[0027] Compared with the prior art, the present invention provides a non-oxidative coloring composition and its application, which has the following beneficial effects:

[0028] (1) The non-oxidative coloring composition provided by the present invention includes acid dye, rheology modifier, acid regulator and hair conditioner. These four components work together to exert a synergistic effect, so that the pigment can be uniformly adsorbed and deposited on the hair surface, and new breakthroughs have been made in terms of color persistence, uniformity and resistance to color transfer. At the same time, it has a certain conditioning and repair effect on the dyed hair.

[0029] (2) The semi-permanent non-oxidative hair dye prepared by the above-mentioned non-oxidative coloring composition has excellent hair dyeing performance, dyeing uniformity and wash resistance; in addition, when the hair dye comes into contact with the skin, it will form a protective film on the skin surface, which can be easily washed off with washing products; the dyed hair has good combing performance and luster.

[0030] (3) The temporary non-oxidative hair dye prepared by the above non-oxidative coloring composition has good dyeing properties and color uniformity, and a more natural makeup look; on the other hand, the hair dye can be easily washed off with shampoo. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Experimental Example 1 of the present invention (left: before use, right: after use);

[0033] Figure 2 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Comparative Example 1 of the present invention (left: before use, right: after use);

[0034] Figure 3 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Experimental Example 3 of the present invention (left: before use, right: after use);

[0035] Figure 4 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Comparative Example 3 of the present invention (left: before use, right: after use);

[0036] Figure 5 Photographs of test subjects before and after using the temporary non-oxidative hair dye of Experimental Example 6 of the present invention (left: before use, right: after use);

[0037] Figure 6 Photos of test subjects before and after using the temporary non-oxidative hair dye of Comparative Example 6 of the present invention (left: before use, right: after use). Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0040] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0042] To better understand the technical content of the present invention, the technical solution of the present invention will be further introduced and explained below with reference to specific embodiments.

[0043] The non-oxidative coloring composition provided by this invention includes (A) an acid dye, (B) a rheology modifier, (C) an acid regulator, and (D) a hair conditioning agent. In this invention, component B (rheology modifier) ​​includes three or more of hydroxyethyl cellulose, xanthan gum, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, and sodium hyaluronate. The molecular weight of polyvinylpyrrolidone is 40,000 to 80,000; the molecular weight of vinylpyrrolidone-vinyl acetate copolymer is 40,000 to 70,000; and the molecular weight of sodium hyaluronate is 200 kDa to 400 kDa. Component B can form a dense, uniform, breathable film on the hair surface, allowing component A (acid dye) to continuously act on gray hair, minimizing the color difference between non-gray and gray hair after dyeing, resulting in better hair color uniformity. Furthermore, component B can form a film on the skin, acting as a barrier to prevent contamination of the scalp and other areas. In addition, component B imparts rheological and conditioning properties, resulting in an excellent user experience and good combability and shine in dyed hair.

[0044] Component C (acidity regulator) includes at least one of citric acid, lactic acid, acetic acid, gluconolactone, succinic acid, salicylic acid, tartaric acid, oxalic acid, and maleic acid. It can adjust the pH value of the non-oxidative coloring composition, thereby increasing the affinity of component A on hair and further improving the hair dyeing performance. On the other hand, component C can meet the multi-scenario application of the non-oxidative coloring composition.

[0045] Ingredient D (hair conditioning agent) gives the non-oxidative coloring composition a better feel and a more natural finish. Ingredient D also further enhances the skin's resistance to smudging.

[0046] In this invention, the weight ratio of the acid dye, rheology modifier, acid regulator, and hair conditioner in the non-oxidative coloring composition is (0.4-5):(1.2-3.6):(1.5-4):(0.2-0.45).

[0047] Unless otherwise specified, experimental methods in the following examples are generally performed under standard conditions or as recommended by the manufacturer. Percentages and parts are by weight unless otherwise stated.

[0048] Example 1

[0049] Example 1 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0050] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0051] Component B: 1.4% rheology modifier (hydroxyethyl cellulose: 1%, xanthan gum: 0.3%, sodium hyaluronate: 0.1%).

[0052] Component C: 4% acid regulator (lactic acid),

[0053] Ingredient D: Hair conditioning agent 0.3% (Lauryl trimethylammonium chloride: 0.1%, bis-PEG-15 methyl ether polydimethylsiloxane: 0.2%);

[0054] The pH value of the non-oxidative coloring composition in Example 1 is 3.1.

[0055] Example 2

[0056] Example 2 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0057] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0058] Component B: 2.3% rheology modifier (hydroxyethyl cellulose: 0.15%, xanthan gum: 0.15%, vinylpyrrolidone-vinyl acetate copolymer: 2%).

[0059] Component C: Acidity regulator 3.5% (acetic acid: 2.5%, gluconolactone: 1%)

[0060] Ingredient D: Hair conditioning agent 0.25% (PEG-12 polydimethylsiloxane: 0.15%, bis-PEG-15 methyl ether polydimethylsiloxane: 0.1%);

[0061] The pH value of the non-oxidative coloring composition in Example 2 is 3.

[0062] Example 3

[0063] Example 3 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0064] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0065] Component B: Rheology modifier 1.84% (hydroxyethyl cellulose: 0.12%, xanthan gum: 0.12%, polyvinylpyrrolidone: 1.5%, sodium hyaluronate: 0.1%).

[0066] Component C: Acidity regulator 2.3% (succinic acid: 1.5%, salicylic acid: 0.8%)

[0067] Ingredient D: Hair conditioning agent 0.35% (bis-PEG-18 methyl polyether siloxane: 0.2%, bis-PEG-15 methyl ether polydimethyl siloxane: 0.15%);

[0068] The pH value of the non-oxidative coloring composition in Example 3 is 3.2.

[0069] Example 4

[0070] Example 4 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0071] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0072] Component B: Rheology modifier 2.35% (hydroxyethyl cellulose: 0.2%, xanthan gum: 0.6%, vinylpyrrolidone-vinyl acetate copolymer: 1.5%, sodium hyaluronate: 0.05%).

[0073] Component C: Acidity regulator 3.18% (gluconolactone: 3%, succinic acid: 0.18%)

[0074] Ingredient D: Hair conditioning agent 0.3% (cetrimonium chloride: 0.1%, PEG-12 polydimethylsiloxane: 0.2%);

[0075] The pH value of the non-oxidative coloring composition in Example 4 is 3.1.

[0076] Example 5

[0077] Example 5 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0078] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0079] Component B: Rheology modifier 1.25% (hydroxyethyl cellulose 0.6%, xanthan gum 0.6%, sodium hyaluronate 0.05%).

[0080] Component C: 2% acid regulator (lactic acid: 1%, gluconolactone: 1%)

[0081] Ingredient D: Hair conditioning agent 0.4% (PEG-12 polydimethylsiloxane: 0.2%, bis-PEG-15 methyl ether polydimethylsiloxane: 0.2%);

[0082] The pH value of the non-oxidative coloring composition in Example 5 is 4.5.

[0083] Example 6

[0084] Example 6 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0085] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0086] Component B: Rheology modifier 3.4% (xanthan gum: 0.7%, polyvinylpyrrolidone: 0.7%, vinylpyrrolidone-vinyl acetate copolymer: 2%).

[0087] Component C: 4% acid regulator (lactic acid),

[0088] Ingredient D: Hair conditioning agent 0.3% (Lauryl trimethylammonium chloride: 0.1%, bis-PEG-15 methyl ether polydimethylsiloxane: 0.2%);

[0089] The pH value of the non-oxidative coloring composition in Example 6 is 4.6.

[0090] Example 7

[0091] Example 7 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0092] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0093] Component B: Rheology modifier 1.8% (xanthan gum: 0.2%, polyvinylpyrrolidone: 1.5%, sodium hyaluronate: 0.1%)

[0094] Component C: 1.5% acidity regulator (acetic acid: 1%, gluconolactone: 0.5%)

[0095] Ingredient D: Hair conditioning agent 0.25% (BisPEG-18 methyl polyether siloxane: 0.15%, PEG-12 polydimethyl siloxane: 0.1%);

[0096] The pH value of the non-oxidative coloring composition in Example 7 is 4.8.

[0097] Example 8

[0098] Example 8 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0099] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0100] Component B: Rheology modifier 1.84% (hydroxyethyl cellulose: 0.12%, xanthan gum: 0.12%, polyvinylpyrrolidone: 1.5%, sodium hyaluronate: 0.1%).

[0101] Component C: 1.5% acidity regulator (acetic acid: 1%, succinic acid: 0.5%)

[0102] Ingredient D: Hair conditioning agent 0.35% (bis-PEG-18 methyl polyether siloxane: 0.2%, bis-PEG-15 methyl ether polydimethyl siloxane: 0.15%);

[0103] The pH value of the non-oxidative coloring composition in Example 8 is 4.6.

[0104] Compare with Example 1

[0105] Comparative Example 1 provides a non-oxidative coloring composition. The only difference between Comparative Example 1 and Example 1 is that the latter contains no rheology modifier; all other conditions are the same. The pH value of the non-oxidative coloring composition of Comparative Example 1 is 3.1.

[0106] Compare with Example 2

[0107] Comparative Example 2 provides a non-oxidative coloring composition. The only difference between Comparative Example 2 and Example 2 is that Comparative Example 2 does not contain a hair-conditioning agent; all other conditions are the same. The pH value of the non-oxidative coloring composition of Comparative Example 2 is 3.

[0108] Compare with Example 3

[0109] Comparative Example 3 provides a non-oxidative coloring composition. The only difference between Comparative Example 3 and Example 3 is that the latter does not contain an acidic regulator; all other conditions are the same. The pH value of the non-oxidative coloring composition of Comparative Example 3 is 8.3.

[0110] Compare with Example 4

[0111] Comparative Example 4 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0112] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0113] Component B: Rheology modifier 0.8% (hydroxyethyl cellulose: 0.2%, xanthan gum: 0.6%)

[0114] Component C: Acidity regulator 3.18% (gluconolactone: 3%, succinic acid: 0.18%)

[0115] Ingredient D: Hair conditioning agent 0.7% (cetrimonium chloride: 0.4%, PEG-12 polydimethylsiloxane: 0.3%);

[0116] The pH value of the non-oxidative coloring composition of Comparative Example 4 is 3.1.

[0117] Compare with Example 5

[0118] Comparative Example 5 provides a non-oxidative coloring composition. The only difference between Comparative Example 5 and Example 5 is that Comparative Example 5 does not contain a hair-conditioning agent; all other conditions are the same. The pH value of the non-oxidative coloring composition of Comparative Example 5 is 4.5.

[0119] Compare with Example 6

[0120] Comparative Example 6 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0121] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0122] Component C: 2% acid regulator (citric acid: 1%, lactic acid: 1%)

[0123] Ingredient D: Hair conditioning agent 0.3% (Lauryl trimethylammonium chloride: 0.1%, bis-PEG-15 methyl ether polydimethylsiloxane: 0.2%);

[0124] The pH value of the non-oxidative coloring composition of Comparative Example 6 is 4.6.

[0125] Compare with Example 7

[0126] Comparative Example 7 provides a non-oxidative coloring composition. The only difference between Comparative Example 7 and Example 7 is that the composition does not contain an acidic regulator; all other conditions are the same. The pH value of the non-oxidative coloring composition of Comparative Example 7 is 8.1.

[0127] Compare with Example 8

[0128] Comparative Example 8 provides a non-oxidative coloring composition comprising the following components by weight percentage:

[0129] Component A: 0.95% acid dyes (Acid Black 1: 0.4%, Acid Orange 7: 0.25%, Acid Violet 43: 0.2%, Food Red 12: 0.1%).

[0130] Component B: Rheology modifier 4.6% (xanthan gum: 0.5%, polyvinylpyrrolidone: 3%, vinylpyrrolidone-vinyl acetate copolymer: 1%, sodium hyaluronate: 0.1%),

[0131] Component C: 1.5% acidity regulator (acetic acid: 1%, succinic acid: 0.5%)

[0132] Ingredient D: Hair conditioning agent 1.1% (bis-PEG-18 methyl polyether siloxane: 0.4%, bis-PEG-15 methyl ether polydimethyl siloxane: 0.6%, stearyl trimethylammonium chloride: 0.1%);

[0133] The pH value of the non-oxidative coloring composition of Comparative Example 8 is 4.6.

[0134] Prepare the semi-permanent non-oxidative hair dyes for Experiment Examples 1-4 according to the raw material composition in Table 1:

[0135] Table 1. Composition and content (by weight percentage) of semi-permanent non-oxidative hair dyes in Experiments 1-4

[0136]

[0137] Prepare the semi-permanent non-oxidative hair dyes for Comparative Examples 1-4 according to the raw material composition in Table 2:

[0138] Table 2. Composition and content (by weight percentage) of semi-permanent non-oxidative hair dyes in Comparative Examples 1-4 Prepare the temporary non-oxidative hair dye for Experiment 5-8 according to the raw material composition in Table 3:

[0139] Table 3. Composition and content (weight percentage, %) of the temporary non-oxidative hair dyes in Experiments 5-8 Prepare the temporary non-oxidative hair dyes for Comparative Examples 5-8 according to the raw material composition in Table 4:

[0140] Table 4. Composition and content (weight percentage, %) of the temporary non-oxidative hair dyes used in Comparative Examples 5-8

[0141]

[0142]

[0143] Efficacy Evaluation – 1. Dyeing performance, color uniformity and conditioning tests

[0144] Dyeing performance test: Using commercially available Chinese white hair, hair bundles with an effective length of 25 cm, a width of 3 cm, and an effective weight of 8 g were prepared. Following a hair dye:hair weight ratio of 1.5:1, the hair dyes described in Examples 1-4 and Comparative Examples 1-4 were applied to the hair bundles. After being left at room temperature (25℃) for 30 minutes, the hair bundles were rinsed with warm water (35℃) for 1 minute, washed with commercially available shampoo, rinsed thoroughly with water, and then dried with a hairdryer for 20 minutes. The color difference dE* (including L*, a*, and b* values) of the hair bundles was measured using a colorimeter (Konica Minolta CM-3600A); the color difference dE*1 value of the hair bundles immediately after dyeing was also measured. The formula for calculating dE*1 is:

[0145]

[0146] In the formula, L*0, a*0, and b*0 represent the values ​​of L*, a*, and b* before staining, respectively, and L*1, a*1, and b*1 represent the values ​​of L*, a*, and b* after staining, respectively. Furthermore, a larger dE*1 indicates better staining performance.

[0147] Color uniformity test: Forty participants with gray hair who had not dyed their hair for at least 3 months, aged 25-60, were randomly divided into 8 groups. Using a brush, 6g of the test sample and control sample of hair dye were applied to the gray hair. After leaving the hair naturally for 30 minutes, the color uniformity test was conducted. A panel of 15 professionals scored the color uniformity of the dyed hair, and the average score was taken. Next, a conditioning test was performed. A panel of 15 professionals combed the hair 5 times with a fine-toothed comb and evaluated the conditioning of the participants' hair, taking the average score.

[0148] Color uniformity evaluation: Under standard white light, the test subjects were photographed using a human image photography studio to observe the color uniformity of the test subjects' hair after dyeing; a scoring system was used, with the scoring criteria as follows: 5 points represents very uniform color, 4 points represents uniform color, 3 points represents average, 2 points represents color difference or color patches, and 1 point represents obvious color difference or color patches.

[0149] Conditioning Evaluation: A scoring system is used, with the following criteria: 5 points represents very easy to comb and shiny, 4 points represents easy to comb and shiny, 3 points represents average, 2 points represents difficult to comb and dull, and 1 point represents very difficult to comb and dull.

[0150] The semi-permanent non-oxidative hair dyes of Examples 1-4 and Comparative Examples 1-4 were tested for dyeing performance, color uniformity, and conditioning properties. The test results are shown in Table 5 below:

[0151] Table 5. Results of tests on the dyeing performance, color uniformity, and conditioning properties of semi-permanent non-oxidative hair dyes in Examples 1-4 and Comparative Examples 1-4.

[0152] Experimental Examples / Comparative Examples <![CDATA[Dyeability (dE*1)]]> Color uniformity score Reasonableness score Experimental Example 1 57.5 5 4.8 Experimental Example 2 57.6 4.9 5 Experimental Example 3 57.4 5 5 Test Example 4 57.4 5 5 Comparative Example 1 36.5 1 3 Comparative Example 2 32.7 3 2 Comparative Example 3 21.8 2 2 Comparative Example 4 37.5 2 3

[0153] Figure 1 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Experimental Example 1 of the present invention (left: before use, right: after use); Figure 2 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Comparative Example 1 of the present invention (left: before use, right: after use); Figure 3 Photos of test subjects before and after using the semi-permanent non-oxidative hair dye of Experimental Example 3 of the present invention (left: before use, right: after use); Figure 4 Photos showing test subjects before and after using the semi-permanent non-oxidative hair dye of Comparative Example 3 of this invention (left: before use, right: after use). Figures 1-4As shown in Table 5, the hair dyes of Examples 1-4 exhibit superior dyeing performance, color uniformity, and excellent conditioning properties compared to Comparative Examples 1-4. Furthermore, comparing Example 1 with Comparative Example 1, the color uniformity of Example 1 is significantly better than that of Comparative Example 1, indicating that component B (rheology modifier) ​​in the non-oxidative coloring composition of the present invention can minimize the color difference between non-gray and gray hair after dyeing, resulting in better color uniformity. Comparing Example 2 with Comparative Example 2, the conditioning properties of Example 2 are significantly better than those of Comparative Example 2, indicating that component D (hair conditioning agent) in the composition of the present invention can provide better touch improvement and conditioning properties to the hair. The test results in Table 5 further demonstrate that each component in the non-oxidative coloring composition is indispensable, and the weight ratio of the acid dye, rheology modifier, acid regulator, and hair conditioning agent must be within the range specified in the present invention to achieve a synergistic effect.

[0154] Efficacy Evaluation – 2. Color Durability Test

[0155] After the dyeing performance, color uniformity, and conditioning tests were completed, the hair was washed with commercially available shampoo, rinsed thoroughly with water, and then dried with a hairdryer for 20 minutes. This process was repeated 10 times, and then the color difference dE of the hair strands was measured again using a colorimeter. * 2,dE * The formula for calculating 2 is:

[0156]

[0157] (In the formula, L*0, a*0, and b*0 represent the values ​​of L*, a*, and b* before dyeing, respectively, and L*2, a*2, and b*2 represent the values ​​of L*, a*, and b* after washing with shampoo, respectively.) Then, calculate the color durability ΔdE* = dE*1 - dE*2. The smaller ΔdE* is, the higher its color durability.

[0158] The color durability of the semi-permanent non-oxidative hair dyes in Examples 1-4 and Comparative Examples 1-4 was tested, and the results are shown in Table 6 below:

[0159] Table 6. Results of color durability tests for semi-permanent non-oxidative hair dyes in Experiments 1-4 and Comparative Examples 1-4.

[0160]

[0161]

[0162] As shown in Table 6, the semi-permanent non-oxidative hair dyes of Examples 1-3 exhibit superior color durability compared to Comparative Examples 1-3. This further demonstrates that each component in the non-oxidative coloring composition is indispensable; the absence of any one component will result in a lack of color durability. Furthermore, compared to Comparative Example 4, Example 4 demonstrates superior color durability, further indicating that the weight ratio of the acid dye, rheology modifier, acid regulator, and hair conditioning agent in the non-oxidative coloring composition must be within the range specified in this invention to achieve a synergistic effect.

[0163] Efficacy Evaluation – 3. Anti-contamination Assessment Test

[0164] Apply 0.5g of the hair dye from Test Examples 1-4 and Comparative Examples 1-4 to the inner forearm of approximately 9 square centimeters. After 10 minutes of contact, rinse with water for 1 minute and allow the arm to air dry. A panel of 15 professionals observed the inner forearm to determine its stain resistance and recorded the average value. Then, wash the inner forearm with 0.5g of shampoo, rinse with water for 1 minute, and allow the arm to air dry. The panel of 15 professionals observed the inner forearm again to determine its ease of removal after skin contact and recorded the average value.

[0165] The scoring criteria are as follows: Skin stain resistance: 5 points means no skin staining at all, 4 points means no skin staining, 3 points means skin staining, 2 points means skin staining is obvious, and 1 point means skin staining is very obvious.

[0166] Based on how easily it can be washed off the skin: 5 points means that the skin pollution is not obvious at all, 4 points means that the skin pollution is not obvious, 3 points means that the skin is polluted, 2 points means that the skin pollution is obvious, and 1 point means that the skin pollution is very obvious.

[0167] The stain resistance of the semi-permanent non-oxidative hair dyes in Examples 1-4 and Comparative Examples 1-4 was tested, and the results are shown in Table 7 below:

[0168] Table 7. Results of stain resistance tests for semi-permanent non-oxidative hair dyes in Examples 1-4 and Comparative Examples 1-4.

[0169]

[0170]

[0171] As shown in Table 7, Test Examples 1-3 and Comparative Examples 1-3 demonstrate that adding Component A (acid dye), Component B (rheology modifier), and Component C (acid regulator) all contribute to the hair dye's excellent skin stain resistance. Furthermore, even if the dye gets on the skin, it is easily removed with shampoo. Test Example 4 and Comparative Example 4 show that Test Example 4 exhibits excellent skin stain resistance, further illustrating that the proportions of the above four components in the non-oxidative coloring composition must be within the range specified in this invention to achieve a synergistic effect.

[0172] The dyeing performance of the temporary non-oxidative hair dyes in Examples 5-8 and Comparative Examples 5-8 was tested, and the results are shown in Table 8 below:

[0173] Table 8. Dyeing performance test results of temporary non-oxidative hair dyes in Experimental Examples 5-8 and Comparative Examples 5-8.

[0174] Experimental Examples / Comparative Examples <![CDATA[Dyeability (dE*1)]]> Experimental Example 5 56.9 Experimental Example 6 56.8 Experimental Example 7 56.9 Experimental Example 8 57.2 Comparative Example 5 34.2 Comparative Example 6 31.5 Comparative Example 7 20.7 Comparative Example 8 34.5

[0175] in, Figure 5 Photographs of test subjects before and after using the temporary non-oxidative hair dye of Experimental Example 6 of the present invention (left: before use, right: after use); Figure 6 Photos showing test subjects before and after using the temporary non-oxidative hair dye of Comparative Example 6 of this invention (left: before use, right: after use). Figures 5-6 As shown in Table 8, the temporary non-oxidative hair dyes of Examples 5-8 exhibit superior dyeing performance compared to Comparative Examples 5-8. The test results in Table 8 further demonstrate that each component in the non-oxidative coloring composition is indispensable, and that the weight ratios of the acid dye, rheology modifier, acid conditioner, and hair conditioning agent must be within the range specified in this invention to achieve a synergistic effect.

[0176] The color uniformity, makeup appearance, and ease of removal of the temporary non-oxidative hair dyes in Experimental Examples 5-8 and Comparative Examples 5-8 were evaluated.

[0177] First, after the color uniformity test, the color uniformity was evaluated. Next, a makeup effect evaluation test was conducted, in which a team of 15 professionals combed the hair 5 times with a fine-tooth comb and evaluated the makeup effect of the test subject's hair, taking the average value. Finally, an easy-to-wash evaluation test was conducted, in which the test subject's dyed hair was washed with commercially available shampoo and its easy-to-wash effect was evaluated, taking the average value.

[0178] Makeup evaluation: A scoring system is used, with the following criteria: 5 points represents very easy to comb and the hair is naturally loose, 4 points represents easy to comb and the hair is naturally loose, 3 points represents average, 2 points represents difficult to comb and the hair is relatively stiff, and 1 point represents very difficult to comb and the hair is very stiff.

[0179] Ease of rinsing evaluation: A scoring system is used, with the following scoring criteria: 5 points represents no film feeling and easy to rinse clean, 4 points represents a weak film feeling and easy to rinse clean, 3 points represents average, 2 points represents a strong film feeling and slightly difficult to rinse, and 1 point represents a very strong film feeling and difficult to rinse.

[0180] The evaluation results of the color uniformity, makeup appearance, and washability of the temporary non-oxidative hair dyes in Examples 5-8 and Comparative Examples 5-8 are shown in Table 9 below:

[0181] Table 9. Evaluation results of color uniformity, makeup appearance, and washability of temporary non-oxidative hair dyes in Test Examples 5-8 and Comparative Examples 5-8.

[0182]

[0183]

[0184] As shown in Table 9, compared with Comparative Example 5, Experimental Example 5 is significantly better in terms of the finished look, indicating that component D (hair conditioning agent) of the present invention imparts better touch and a more natural finish to the non-oxidative coloring composition. Compared with Comparative Example 6, Experimental Example 6 is significantly better in terms of color uniformity and the finished look, indicating that component B (rheology modifier) ​​of the present invention can minimize the color difference between non-white and white hair after dyeing, resulting in better color uniformity. Compared with Comparative Example 7, Experimental Example 7 has significantly better color uniformity, indicating that component C (acidic regulator) of the present invention can increase the affinity of component A (acidic dye) on the hair, further improving the color uniformity after dyeing. Experimental Example 8 and Comparative Example 8 show that Experimental Example 8 has excellent color uniformity and a finished look, and also exhibits excellent washability. The above test results further illustrate that each component in the non-oxidative coloring composition is indispensable, and the proportions of the four components must be within the range of this invention to have a synergistic effect.

[0185] In summary, the non-oxidative coloring composition of the present invention and its application are used for covering gray hair and dyeing bleached hair. The components in this composition work synergistically to allow the pigment to be adsorbed and deposited on the hair surface, resulting in excellent color durability, color uniformity, stain resistance, gentleness, and non-irritation. It also has a certain conditioning and repairing effect on the hair. The non-oxidative coloring composition of the present invention can be used in non-oxidative hair dyes, including semi-permanent and temporary hair dyes.

[0186] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A non-oxidative coloring composition, characterized in that, It includes the following components: acid dyes, rheology modifiers, acid conditioners, and hair conditioning agents; The rheology modifier is selected from three or more of hydroxyethyl cellulose, xanthan gum, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, and sodium hyaluronate. The hair conditioning agent is selected from at least one of lauryltrimethylammonium chloride, cetrimonium chloride, stearyltrimethylammonium chloride, bis-PEG-15 methyl ether polydimethylsiloxane, PEG-12 polydimethylsiloxane, and bis-PEG-18 methyl polyether siloxane.

2. The non-oxidative coloring composition according to claim 1, characterized in that, The weight ratio of the acid dye, rheology modifier, acid regulator, and hair conditioner is (0.4-5):(1.2-3.6):(1.5-4):(0.2-0.45).

3. The non-oxidative coloring composition according to claim 1, characterized in that, The acid dye is a water-soluble acid dye containing at least one sulfonic acid group, and the molecular weight of the acid dye is 300 to 800.

4. The non-oxidative coloring composition according to claim 1, characterized in that, The acidity regulator is selected from at least one of citric acid, lactic acid, acetic acid, gluconolactone, succinic acid, salicylic acid, tartaric acid, oxalic acid, and maleic acid.

5. A semi-permanent non-oxidative hair dye, characterized in that, The composition comprises the non-oxidative coloring composition according to any one of claims 1-4, an organic solvent, a preservative, a stabilizer, a fragrance, and deionized water.

6. The semi-permanent non-oxidative hair dye as described in claim 5, characterized in that, It consists of the following components in weight percentage: 2-15% non-oxidative coloring composition, 5-30% organic solvent, 0.4-1.5% preservative, 0.2-2.5% stabilizer, 0.05-1.0% fragrance, and the balance being deionized water; the pH value of the non-oxidative coloring composition is 2.5-3.

5.

7. The semi-permanent non-oxidative hair dye as described in claim 5, characterized in that, The organic solvent is selected from two or more of ethanol, glycerol, propylene glycol, butanediol, benzyl alcohol, phenoxyethanol, and ethylene glycol monobenzyl ether; the preservative is selected from two or more of phenoxyethanol, p-hydroxyacetophenone, sodium benzoate, gluconolactone, benzoic acid, pentanediol, and hexanediol; the stabilizer is selected from at least one of acrylate copolymers, styrene / acrylate copolymers, polyethylene glycol-2M, polyethylene glycol-9M, and polyethylene glycol-14M.

8. A temporary non-oxidative hair dye, characterized in that, The composition comprises the non-oxidative coloring composition according to any one of claims 1-4, a film-forming agent, an organic solvent, a preservative, a stabilizer, a fragrance, and deionized water.

9. The temporary non-oxidative hair dye as described in claim 8, characterized in that, It consists of the following components in weight percentage: 5-20% non-oxidative coloring composition, 1-10% film-forming agent, 5-30% organic solvent, 0.4-1.5% preservative, 0.2-2.5% stabilizer, 0.05-1.0% fragrance, and the balance being deionized water; the pH value of the non-oxidative coloring composition is 3.6-7.

0.

10. The temporary non-oxidative hair dye as described in claim 8, characterized in that, The film-forming agent is selected from at least one of acrylate copolymers, styrene / acrylate copolymers, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, and hydrolyzed corn starch; the organic solvent is selected from at least one of ethanol, glycerol, propylene glycol, butanediol, benzyl alcohol, phenoxyethanol, and ethylene glycol monobenzyl ether; the preservative is selected from two or more of phenoxyethanol, p-hydroxyacetophenone, sodium benzoate, gluconolactone, benzoic acid, pentylene glycol, hexanediol, and ethylhexylglycerin; and the stabilizer is selected from at least one of cetearyl alcohol polyether-20 and cetearyl alcohol polyether-25.

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