A hair cosmetic composition containing a long-acting odor control agent

Abstract

This invention belongs to the field of daily chemical products, specifically relating to a long-lasting odor-preventing composition for hair using an inulin hydrophobic derivative composite carrier. The composition comprises the following components by weight percentage: 6-10% core odor-preventing carrier; 50-70% solvent; 4-6% film-enhancing agent; 0.8-1.2% moisturizing and repairing agent; 2.5-3.5% co-solvent; 15-20% propellant; and the balance being pure water. The core odor-preventing carrier comprises inulin hydrophobic derivatives and plant oils. This invention, through a three-dimensional network of hydrophobic membrane formed by the core odor-preventing carrier, directly blocks the adsorption and penetration of odor molecules at the physical level, achieving a fundamental breakthrough in the odor-preventing mechanism and long-lasting stability of the effect. It not only effectively resists the adsorption of environmental odors but also maintains the stable structure of the hydrophobic membrane during daily grooming due to the excellent abrasion resistance of the membrane, ensuring the continuous effect of odor prevention. This solves the core defects of existing products, such as short-lasting and easily degraded odor prevention effects.

Description

Technical Field

[0001] This invention belongs to the field of daily chemical products, specifically relating to a long-lasting deodorizing composition for hair using an inulin hydrophobic derivative composite carrier. Background Technology

[0002] In daily life, hair is constantly exposed to the external environment, often coming into contact with food odors, cigarette smoke, and various other environmental smells after washing. These odors easily adhere to the hair and are difficult to dissipate. After washing, the hair cuticles are open, and the hair surface lacks the protective barrier formed by natural sebum. In addition, the static electricity effect caused by the imbalance of charges on the hair surface makes it easy for odor molecules such as aldehydes and esters in food, as well as nicotine and tar molecules in cigarette smoke, to be tightly adsorbed to the hair surface through intermolecular forces such as van der Waals forces and hydrogen bonds. Some small odor molecules can even penetrate into the gaps between the cuticle and the cortex. Regular combing can only remove a small number of loose odor molecules on the surface, and simple rinsing cannot completely remove the adsorbed odor molecules, affecting people's social experience.

[0003] Existing hair deodorant products mostly rely on adding high concentrations of fragrance to mask odors. While this can reduce odor emissions to some extent, it does not block odor absorption at the source. Furthermore, fragrance ingredients may cause discomfort such as itching and redness in people with sensitive scalps, and may also mix with environmental odors to form more complex unpleasant smells, thus failing to truly meet consumer needs. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a long-lasting odor-preventing composition using an inulin hydrophobic derivative composite carrier. This invention directly blocks the adsorption and penetration of odor molecules at the physical level through a three-dimensional network hydrophobic membrane formed by the core odor-preventing carrier, achieving a fundamental breakthrough in the odor-preventing mechanism and long-term stable effect. It can not only effectively resist the adsorption of environmental odors, but also maintain the stable structure of the hydrophobic membrane during daily grooming due to the excellent abrasion resistance of the membrane layer, ensuring the continuous effect of odor prevention. This solves the core defects of existing products, such as short-term and easy failure of odor prevention effect.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: A long-lasting deodorizing composition for use with an inulin hydrophobic derivative composite carrier comprises the following components by weight percentage: 6-10% core deodorizing carrier; 50-70% solvent; 4-6% film layer enhancer; 0.8-1.2% moisturizing and repairing agent; 2.5-3.5% cosolvent; 15-20% propellant; and the balance being pure water; wherein the core deodorizing carrier comprises an inulin hydrophobic derivative and plant oil.

[0006] Through the above technical solution, when the complex formed by inulin hydrophobic derivatives and plant oils acts on the hair surface, its three-dimensional network structure can closely adhere to the hair cuticles, filling the gaps formed by the open cuticles. Simultaneously, the hydrophobic chains of the inulin hydrophobic derivatives intertwine, constructing a continuous and dense hydrophobic film on the hair surface. This hydrophobic film, on the one hand, prevents odor molecules from directly contacting the hair surface through steric hindrance; on the other hand, it uses hydrophobic interactions to repel polar and non-polar odor molecules, preventing odor molecules from adhering to the hair through physical adsorption or penetration. Furthermore, the unsaturated fatty acids in the plant oils enhance the flexibility and adhesion of the hydrophobic film, reducing the possibility of the hydrophobic film breaking due to combing or slight friction, and improving the durability of the composition's odor-resistant effect. The hydrophobic film formed by the composition of this invention is thin and light, has little impact on hair volume, is non-sticky, and causes minimal irritation to the scalp, providing a good user experience.

[0007] Furthermore, the inulin hydrophobic derivative includes at least one of palmitoyl inulin and stearoyl inulin.

[0008] The above technical solution demonstrates good compatibility between the selected inulin hydrophobic derivative and plant oils.

[0009] Furthermore, the plant oil includes at least one of the following: linseed oil, Theaceae oil, Sapindaceae oil, and Podocarpaceae oil.

[0010] Through the above technical solutions, flaxseed oil, an oil from the Linaceae family, has ≥80% unsaturated fatty acids, ≥50% α-linolenic acid, abundant conjugated double bonds, and high complex activity, which can significantly improve the density of hydrophobic films.

[0011] Furthermore, the preparation method of the core odor-proof carrier includes the following steps: S1. Add inulin hydrophobic derivative to vegetable oil to form a premix, the mass ratio of inulin hydrophobic derivative to vegetable oil is 1:1 to 5, then add 4 to 6% of propylene glycol by mass of the premix, mix at a temperature of 25 to 35°C and a speed of 200 to 400 rpm for 15 to 25 minutes to obtain a suspension. S2. Place the suspension in a reaction vessel, introduce nitrogen gas at a flow rate of 40-60 mL / min, heat to 60-65℃, adjust the stirring speed to 300-500 rpm, react for 100-150 min, detect the acid value of the reaction system, and when the acid value stabilizes at 0.6-1.0 mg KOH / g, the initial complex is obtained. S3. Cool the initial complex to 28-33℃, then filter it through a 2.5-3.5μm microporous membrane, collect the filtered gel-like substance, and obtain the core deodorizing carrier.

[0012] Furthermore, the solvent includes at least one of C9-14 isoalkanes.

[0013] Preferably, the solvent is a mixture of isoparaffins.

[0014] Through the above technical solution, the solvent, as the dispersion medium for the core deodorizing carrier and the film layer enhancer, can ensure that the functional components are mixed evenly and can evaporate quickly after spraying, providing conditions for the core deodorizing carrier to form a film on the hair surface, while avoiding residual stickiness that affects the user experience.

[0015] Furthermore, the film reinforcement agent includes at least one of polydimethylsiloxane, polydimethylsiloxane / vinyl polydimethylsiloxane composite polymer, and trisiloxane.

[0016] Through the above technical solutions, the film reinforcement agent has good film-forming toughness and compatibility, and can synergistically improve the friction resistance of the film with the core deodorizing carrier.

[0017] Preferably, the film reinforcement agent is polydimethylsiloxane with a viscosity of 10-100 cSt.

[0018] When the viscosity of polydimethylsiloxane is <10 cSt, the molecular chains of polydimethylsiloxane are too short, resulting in insufficient entanglement with the core odor-controlling carrier and a low rate of improvement in the film's abrasion resistance. When the viscosity of polydimethylsiloxane is >100 cSt, the molecular chains of polydimethylsiloxane and the core odor-controlling carrier become severely entangled, easily forming agglomerates, leading to gaps in the film and reducing its coverage. The above technical solution utilizes polydimethylsiloxane with a viscosity between 10 and 100 cSt, which exhibits good compatibility with the core odor-controlling carrier, filling tiny gaps in the film, improving its abrasion resistance, reducing the coefficient of friction on the hair surface, enhancing hair smoothness, and minimizing frizz.

[0019] Furthermore, the moisturizing and repairing agent includes at least one of D-panthenol, glycerin, allantoin, hydrolyzed plant protein, water-locking magnet, and sodium PCA.

[0020] Through the above technical solution, the moisturizing and repairing agent possesses excellent water solubility and permeability, balancing the occlusiveness of the core odor-blocking carrier film and preventing moisture loss from the hair shaft. D-Panthenol, in particular, combines moisturizing and repairing properties and exhibits good compatibility with the system. Furthermore, D-Panthenol can penetrate into the hair cuticle gaps and cortex, replenishing internal moisture; simultaneously, the amino groups in its molecule can bind to hair keratin, repairing cuticle damage and enhancing hair resilience. In addition, D-Panthenol can adhere to the inner side of the film through a weak interaction with the core odor-blocking carrier, preventing dryness and stiffness caused by excessive film occlusion.

[0021] Furthermore, the co-solvent includes at least one of propylene glycol, glycerol, butylene glycol, sorbitol, dipropylene glycol, and polyethylene glycol-400.

[0022] Through the above technical solution, the cosolvent possesses both hydrophilic and lipophilic properties, which can improve the solubility of the moisturizing and repairing agent in the solvent, while enhancing the dispersion stability of the core deodorizing carrier. Specifically, propylene glycol can bind to the moisturizing and repairing agent through hydrogen bonds, uniformly dispersing the agent in the oil phase system. Simultaneously, the interaction between the lipophilic groups of propylene glycol and the core deodorizing carrier and solvent enhances the compatibility of the system, reduces the aggregation of the core deodorizing carrier during storage, and improves the stability of the composition.

[0023] Furthermore, the propellant includes at least one of propane, n-butane, isobutane, a propane / butane mixture, a propane / isobutane mixture, dimethyl ether, carbon dioxide, and nitrogen.

[0024] Through the above technical solution, the propellant provides the spraying power for the composition, pressurizing and atomizing the system. This allows the core odor-resistant carrier, film-enhancing agent, and moisturizing repair agent to adhere to the hair surface as uniformly sized droplets, thus forming a continuous and uniform coating on the hair, providing the material basis for the odor-resistant function. The selected propellant has suitable vapor pressure and chemical stability, and high safety. The propane in the propellant has a stable vapor pressure of 0.4–0.6 MPa at an ambient temperature of 25°C, which balances the spraying power and atomization effect, reducing the phenomenon of uneven component distribution due to excessively vigorous spraying or poor atomization due to excessively weak spraying.

[0025] Furthermore, the long-lasting deodorizing composition for use with the inulin hydrophobic derivative composite carrier may also include at least one of the following components: 0.9-1.7% preservative; 0.1-0.3% fragrance agent; and 0.05-0.15% antioxidant.

[0026] Through the above technical solutions, preservatives can inhibit microbial growth and extend product shelf life. Fragrance agents can improve product odor and enhance the user experience. Antioxidants can inhibit the oxidative degradation of plant oils and the core deodorizing carriers, maintaining product performance stability.

[0027] Furthermore, the preservative includes at least one of phenoxyethanol, benzyl alcohol, 1,2-hexanediol, and octyl glycol.

[0028] The above technical solution uses preservatives that balance preservative effect and gentleness, making them suitable for people with sensitive scalps.

[0029] Furthermore, the antioxidant includes at least one of tocopheryl acetate, tea polyphenols, and rosemary extract.

[0030] Through the above technical solution, the tocopheryl acetate in the antioxidant has good compatibility with vegetable oils, can effectively capture free radicals, delay oil oxidation, and prolong the stability of the core deodorizing carrier.

[0031] The present invention has the following beneficial effects: 1. This invention utilizes a three-dimensional hydrophobic mesh formed by a core odor-blocking carrier to directly block the adsorption and penetration of odor molecules at a physical level. This achieves a fundamental breakthrough in the odor-blocking mechanism and ensures long-lasting stability of the effect. It not only effectively resists the adsorption of environmental odors but also maintains a stable hydrophobic structure during daily combing due to the excellent abrasion resistance of the membrane, ensuring continuous odor-blocking effects. This solves the core defects of existing products, such as short-lasting and easily degraded odor-blocking effects. By combining solvents and membrane-strengthening agents, the resulting hydrophobic membrane is thin and uniform, without affecting hair volume. It also significantly reduces the coefficient of friction on the hair surface, reducing combing resistance and the burden on the hair and scalp, resulting in a superior user experience. Furthermore, the core ingredients are all derived from natural sources, supplemented with low concentrations of mild preservatives and fragrances, ensuring high system safety and a wide range of applications.

[0032] 2. The components in the system have clearly defined and compatible functions, and work synergistically to form a composition with deodorizing, repairing, and hair-nourishing functions. Furthermore, the core deodorizing carrier can be prepared using conventional equipment, and the composition requires no special processes, making its cost controllable and possessing the potential for large-scale industrial production. This provides convenient conditions for the practical transformation and promotion of the technology. Detailed Implementation

[0033] To make the technical problems, solutions, and advantages of this invention clearer, a detailed description will be provided below with reference to specific examples. However, the scope of protection of this invention is not limited to the following specific embodiments. The described embodiments are merely some, not all, of the embodiments of this invention, and are not intended to limit the invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0035] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0036] In the quantitative experiments in the following examples, three replicate experiments were set up, and the data are the average of the three replicate experiments or the average ± standard deviation.

[0037] Raw materials for preparation: Inulin hydrophobic derivative: Palmitoyl inulin; Manufacturer: Shaanxi Zelang Biotechnology Co., Ltd. Vegetable oil: Flaxseed oil; Manufacturer: Liaoning Shengmai Industry Co., Ltd. Isododecane: Boiling point: 179-182℃; Manufacturer: MARUZENPETROCHEMICALCO.,LTD; Polydimethylsiloxane: Viscosity: 50 cSt; Manufacturer: Dow (Zhangjiagang) Investment Co., Ltd. D-Panthenol: Manufacturer: DSM Nutrition Products Ltd.; Propylene glycol: Manufacturer: SKpicglobal Co., Ltd.; Liquefied propane: Manufacturer: Shenzhen Weida Industrial Gases Co., Ltd.; Phenoxyethanol: Manufacturer: HANNONGCHEMICALS INC.; 1,2-Hexanediol: Manufacturer: Tor Specialty Chemicals (Zhenjiang) Co., Ltd.; Tocopheryl acetate: Manufacturer: DSM Nutrition Products Ltd.; Daily fragrance: Manufacturer: IFF.

[0038] Preparation instruments: AUY120 Electronic Analytical Balance, Manufacturer: Shimadzu Enterprise Management (China) Co., Ltd. Double-walled glass reactor GR-50, manufacturer: Shanghai Benang Scientific Instruments Co., Ltd. BONA-GM-18 Organic Membrane Separation Experimental Machine, Manufacturer: Shandong Bona Biotechnology Group Co., Ltd. Core deodorizing carriers M1 to M5 with different addition amounts were prepared. The mass ratio of palmitoyl inulin to flaxseed oil in M1 was 1:1; the mass ratio of palmitoyl inulin to flaxseed oil in M2 was 1:2; the mass ratio of palmitoyl inulin to flaxseed oil in M3 was 1:3; the mass ratio of palmitoyl inulin to flaxseed oil in M4 was 1:4; and the mass ratio of palmitoyl inulin to flaxseed oil in M5 was 1:5. Three parallel samples were prepared for each group.

[0039] The preparation methods of M1 to M5 mentioned above include the following steps: S1. Accurately weigh inulin hydrophobic derivative and vegetable oil using an electronic analytical balance. Slowly add inulin hydrophobic derivative to vegetable oil according to a preset mass ratio to form a premix. Then add 5% propylene glycol of the premix mass and mix at 30°C and 300 rpm for 20 minutes to obtain a suspension. S2. Place the suspension in a double-walled glass reactor (GR-50), introduce nitrogen gas at a flow rate of 50 mL / min, heat to 62℃, adjust the stirring speed to 400 rpm, and react for 120 min. During this period, the acid value of the reaction system can be checked every 30 min. When the acid value is stable at 0.6~1.0 mgKOH / g, the initial complex is obtained. S3. Cool the initial complex to 30°C, then filter it through an organic membrane separation experimental machine (BONA-GM-18) using a 2.5μm microporous membrane, collect the filtered gel-like substance, and obtain the core deodorizing carrier.

[0040] The core deodorizing carrier M3 obtained was used to prepare the composition of the present invention. Examples 1 to 3 and comparative examples 1 to 3 were set up respectively. The specific components and contents are shown in Table 1, and the units are weight percentages.

[0041] Table 1

[0042] The preparation methods of the above embodiments and comparative examples are conventional spray preparation techniques in the field, and will not be described in detail here.

[0043] Experimental testing 1. Experimental Materials Commercially available sample 1: Commercially available basic hair spray, sorted by dosage, the top ten main ingredients are: ethanol, water, fragrance, glycerin, ethylhexylglycerin, butyl methoxydibenzoylmethane, tocopherol (vitamin E), CI47005, CI17200, CI60730, etc.

[0044] Commercially available sample 2: Commercially available hair care fragrance spray, the top ten main ingredients are: Rosa damascena flower water, water, cyclopentamethoxysiloxane, isopropyl myristate, glycerin, daily fragrance, methyl propylene glycol, sodium chloride, phenoxyethanol, sodium benzoate, etc.

[0045] 1.1 Experimental Apparatus The experimental instruments used are shown in Table 2.

[0046] Table 2

[0047] 2. Core Odor-Preventing Carrier Test Preparation of blank hair bundles: Select healthy hair bundles with a length of 10cm. Each bundle is accurately weighed to 0.5g using an electronic analytical balance. Rinse gently three times with deionized water to remove surface impurities. Then, place the bundles in a 37℃ constant temperature drying oven and dry for 2 hours. After cooling to room temperature, seal and store them as blank control samples to ensure consistent dehumidification conditions in the experiment.

[0048] Preparation of hair strands treated with the core odor-proof carriers M1 - M5: Apply M1 - M5 evenly on the hair strands at a rate of 0.1 mL / g, and let it stand at room temperature for 3 minutes to obtain the hair strand bundles treated with M1 - M5.

[0049] 2.1 Film integrity test: Mix the core odor-proof carriers M1 - M5 evenly with the solvent isododecane. The mass ratio of the core odor-proof carriers to the solvent isododecane is 1:8. Spray it onto a clean glass slide at a dosage of 0.2 mL / cm² through ultrasonic spraying (YFUL - 300). After standing at room temperature for 3 minutes, use an optical microscope (BX53M) to observe whether there are cracks, voids or agglomerations in the film layer under a magnification of 200 times, and count the complete film coverage rate; Complete film coverage rate = Complete film coverage area / Total observation area × 100%. If the coverage rate ≥ 75%, it is judged as qualified; if the coverage rate ≥ 95%, it is judged as excellent.

[0050] 2.2 Hydrophobic strength: Use a contact angle measuring instrument. Drop 5 μL of deionized water onto the surface of the film layer on the glass slide. Measure the contact angle at 5 different points in each group and take the average value. The larger the contact angle, the stronger the repulsive ability to polar odor molecules. If the contact angle ≥ 90°, it is judged as qualified for hydrophobicity; if the contact angle ≥ 100°, it is judged as excellent for hydrophobicity.

[0051] 2.3 Odor adsorption inhibition rate: Select nicotine, a typical polar molecule in tobacco odor, and benzo[a]pyrene, a typical non-polar molecule in tar, to construct an odor environment chamber. Place the blank hair strand bundles and the hair strand bundles treated with M1 - M5 in the chamber respectively, and let them stand at a constant temperature of 25°C and a humidity of 50% for 1 hour. Subsequently, use a high-performance liquid chromatograph (HPLC, 1260 Infinity II) to measure the contents of nicotine and benzo[a]pyrene adsorbed by the hair strand bundles, and calculate the adsorption inhibition rate according to the formula: Adsorption inhibition rate = (Adsorption amount of the blank group - Adsorption amount of the treatment group) / Adsorption amount of the blank group × 100%.

[0052] The specific test results are shown in Table 3.

[0053] Table 3

[0054] The experimental data from M1 to M5 show that M2, M3, and M4 meet the screening criteria of this experiment, with M3 being the preferred composite ratio. Regarding film integrity, the M3 group achieved excellent film coverage, significantly higher than other groups. The M1 group, due to its high proportion of palmitoyl inulin, experienced severe molecular chain entanglement, leading to easy cracking of the film after composite assembly. The M5 group, with its excessive linseed oil, exhibited excessive film fluidity, making it difficult to form a continuous and dense structure; both groups failed to meet the acceptable coverage standard. Groups M2 and M4 met the acceptable standard, but their films contained minor defects, resulting in lower integrity than the M3 group. This indicates that a 1:3 ratio of palmitoyl inulin to linseed oil can balance their composite assembly activity, forming a continuous and defect-free film, providing a structural basis for odor blocking.

[0055] In terms of hydrophobicity, group M3 exhibited an excellent contact angle, demonstrating strong repulsion against polar odor molecules. In contrast, group M1 failed to meet the acceptable contact angle standard due to insufficient density of hydrophobic groups, and group M5 also failed due to a less dense membrane structure. Although groups M2 and M4 met the acceptable contact angle standard, their hydrophobicity was weaker than that of group M3. This further indicates that a 1:3 ratio of palmitoyl inulin to flaxseed oil results in a highly hydrophobic membrane, enhancing the repulsion effect against polar odor molecules.

[0056] Regarding odor adsorption and inhibition rates, group M3 showed significantly higher adsorption and inhibition rates for nicotine and benzo[a]pyrene than other groups. Group M1, due to its incomplete membrane and insufficient hydrophobicity, allowed odor molecules to easily penetrate the membrane and adsorb onto hair strands. Group M5 had poor membrane density, allowing odor molecules to easily permeate through membrane gaps, resulting in a low inhibition rate. While groups M2 and M4 could block odors to some extent, their inhibition rates were far lower than group M3. In summary, the composite formulation of group M3 gave the core odor-blocking carrier superior film-forming properties, hydrophobicity, and odor-blocking ability.

[0057] 3. Examples and Comparative Tests 3.1 Sample preparation (1) Preparation of blank hair bundles: Select healthy hair bundles with a length of 10cm. Each bundle is accurately weighed to 0.5g. Rinse gently with deionized water 3 times to remove surface impurities. Then dry in a 37℃ constant temperature drying oven for 2h. After cooling to room temperature, seal and store as a blank control sample to ensure consistent dehumidification conditions in the experiment.

[0058] (2) Pretreatment of commercially available samples: Commercially available sample 1 and commercially available sample 2 were sprayed evenly on blank hair strands at a rate of 0.1 mL / g and left to stand at room temperature for 3 min as control samples of the commercially available group.

[0059] (3) Preparation of experimental samples: The samples of the examples and comparative examples were sprayed evenly on the blank hair strands at the same rate of 0.1 mL / g and left to stand at room temperature for 3 min to serve as the sample of the examples and the sample of the comparative examples.

[0060] 3.2 Hair Fluffiness Test Using the volumetric method, the treated hair strands were allowed to fall naturally into a 100mL graduated cylinder, and the initial volume V1 was recorded. A 50g weight was applied and pressed for 30 seconds, then the weight was removed. After standing for 1 minute, the recovered volume V2 was recorded. Fluffiness = (V2 / V1) × 100%. The higher the value, the better the fluffiness. <70% was judged as unqualified, 70-89% was judged as qualified, and ≥90% was judged as excellent.

[0061] 3.3 Hair stickiness test Sensory evaluation was used, and 20 professional evaluators were invited to touch and score the treated hair strands according to the scoring criteria: no stickiness 5 points, slight stickiness 4 points, moderate stickiness 3 points, obvious stickiness 2 points, and severe stickiness 1 point. The average score was taken. <2 points was judged as unqualified, 2-3 points as qualified, and ≥4 points as excellent.

[0062] 3.4 Odor-resistant long-lasting test The treated hair bundles were placed in an odor chamber containing nicotine and benzo[a]pyrene and exposed for 1 h, 3 h, 6 h, and 12 h, respectively. The residual odor was measured using high performance liquid chromatography (HPLC) and gas chromatography (GC, 7820A), and the adsorption inhibition rate was calculated. After 12 h, an inhibition rate of <40% was considered unqualified, 40-69% was considered qualified, and ≥70% was considered excellent.

[0063] 3.5 Repair Performance Test After the hair bundles that had been subjected to alkali corrosion and heat damage were treated with samples, the cuticle closure rate was counted using an electron microscope (SEM, S-3000N), and the breakage strength improvement rate was calculated using a hair combing instrument (XJ810). A closure rate of <25% and an improvement rate of <8% were considered unqualified, a closure rate of 25-49% and an improvement rate of 8-14% were considered qualified, and a closure rate of ≥50% and an improvement rate of ≥15% were considered excellent.

[0064] 3.6 Skin Irritation Test The sample was applied to the back of a white rabbit and sealed for 4 hours. The skin was observed at 1 hour, 24 hours, 48 ​​hours, and 72 hours. The 72-hour observation result was used as the evaluation criterion. No redness / swelling / erythema / edema was considered as no irritation, slight erythema was considered as slight irritation, and obvious erythema and edema were considered as moderate irritation.

[0065] 3.7 Scalp sensitization test The sample was applied to the back of the volunteer's ear with a patch and removed after 48 hours. Observations were made at 24 hours and 48 hours. The sensitization rate (number of volunteers with redness, swelling, itching, and papules / total number of volunteers × 100%) was used as the evaluation criterion. A sensitization rate of 0 was considered as no sensitization.

[0066] The specific test results are shown in Table 4.

[0067] Table 4

[0068] Based on the test results of Examples 1-3, Comparative Examples 1-3, and Commercial Samples 1-2, it can be concluded that Example 2 has excellent odor-proof function, as well as excellent maintenance effect and user experience.

[0069] By comparing the test results of Example 2 and Comparative Example 1, it can be seen that, compared with Comparative Example 1 without the addition of the core deodorizing carrier, the addition of the core deodorizing carrier can significantly improve the composition's ability to prevent odor adsorption, cuticle closure ability, and hair toughness.

[0070] By comparing the test results of Examples 1-3 and Comparative Examples 2-3, it can be seen that too much or too little addition of the core deodorizing carrier will affect the overall effect of the composition, indicating that the addition range of the core deodorizing carrier selected in this invention is the preferred range.

[0071] A comparison of the test results of Example 2 and commercially available Sample 1 shows that Example 2 is superior to Commercially Available Sample 1 in all aspects, including fluffiness, stickiness, odor absorption and inhibition, cuticle closure, improved breaking strength, and irritation. Commercially available Sample 1 uses high-concentration ethanol to dissolve fragrance, relying on the fragrance to mask odors, but it lacks a film-forming barrier design. Its odor absorption and inhibition rate is only 5% after 12 hours, and the high-concentration ethanol accelerates hair dehydration. Although it improves quick-drying ability, it also makes hair frizzy after use. The cuticle closure rate is 15%, and the improvement in breaking strength is 0%. In terms of safety, the high ethanol and fragrance content of Commercially Available Sample 1 leads to a higher scalp sensitization rate, exhibiting moderate irritation, and its safety is lower than that of Example 2.

[0072] A comparison of the test results of Example 2 and commercially available Sample 2 shows that although Commercially Available Sample 2 contains silicone oil and grease, it lacks composite film-forming function, and its odor adsorption and inhibition rate after 12 hours is only 21%. In contrast, Example 2, with its three-dimensional network hydrophobic structure of palmitoyl inulin and linseed oil composite carrier, combined with polydimethylsiloxane to enhance the abrasion resistance of the film layer, achieves over 90% film integrity and an inhibition rate of 85% within 12 hours, effectively masking odors and blocking them at their source. Commercially available Sample 2 contains rose water and silicone oil, but lacks penetrating and repairing ingredients, resulting in a cuticle closure rate of only 20% and a tensile strength improvement rate of only 2%. Example 2, with its D-panthenol penetrating hydration and composite film layer filling cuticles synergistically, achieves a closure rate of 68% and an improvement rate of 25%, combining moisturizing and repairing functions. In commercially available sample 2, silicone oil and grease tend to create a sticky feeling, and the high water content results in poor volume. Example 2 uses a ratio of 8.0% core deodorizing carrier and 60% isododecane to form a thin and transparent film, while also providing a long-lasting smooth and naturally voluminous experience. In commercially available sample 2, the preservative compound of phenoxyethanol and sodium benzoate easily produces irritating benzoic acid in an acidic environment, causing mild irritation. Example 2 uses a natural carrier as the core, compounded with low-irritant preservatives and low fragrance content, resulting in no skin irritation, a sensitization rate of 0%, and suitability for sensitive scalps.

[0073] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0074] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A long-lasting deodorizing composition for use with an inulin hydrophobic derivative composite carrier, characterized in that, It comprises the following components by weight percentage: 6-10% core deodorizing carrier; 50-70% solvent; 4-6% film layer enhancer; 0.8-1.2% moisturizing and repairing agent; 2.5-3.5% cosolvent; 15-20% propellant; and the balance being pure water; wherein the core deodorizing carrier comprises inulin hydrophobic derivatives and plant oils.

2. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The inulin hydrophobic derivative includes at least one of palmitoyl inulin and stearoyl inulin.

3. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The plant oils include at least one of the following: oils from linaceae, Theaceae, Sapindaceae, and Lysimachia.

4. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The preparation method of the core odor-proof carrier includes the following steps: S1. Add inulin hydrophobic derivative to vegetable oil to form a premix, the mass ratio of inulin hydrophobic derivative to vegetable oil is 1:1 to 5, then add 4 to 6% of propylene glycol by mass of the premix, mix at a temperature of 25 to 35°C and a speed of 200 to 400 rpm for 15 to 25 minutes to obtain a suspension. S2. Place the suspension in a reaction vessel, introduce nitrogen gas at a flow rate of 40-60 mL / min, heat to 60-65℃, adjust the stirring speed to 300-500 rpm, react for 100-150 min, detect the acid value of the reaction system, and when the acid value stabilizes at 0.6-1.0 mg KOH / g, the initial complex is obtained. S3. Cool the initial complex to 28-33℃, then filter it through a 2.5-3.5μm microporous membrane, collect the filtered gel-like substance, and obtain the core deodorizing carrier.

5. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The solvent includes at least one of C9-14 isoalkanes.

6. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The film reinforcement agent includes at least one of polydimethylsiloxane, polydimethylsiloxane / vinyl polydimethylsiloxane composite polymer, and trisiloxane.

7. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The moisturizing and repairing agent includes at least one of D-panthenol, glycerin, allantoin, hydrolyzed vegetable protein, water-locking magnet, and sodium PCA.

8. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The co-solvent includes at least one of propylene glycol, glycerol, butylene glycol, sorbitol, dipropylene glycol, and polyethylene glycol-400.

9. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, The propellant includes at least one of propane, n-butane, isobutane, a propane / butane mixture, a propane / isobutane mixture, dimethyl ether, carbon dioxide, and nitrogen.

10. The long-lasting deodorizing composition for use with inulin hydrophobic derivative composite carrier according to claim 1, characterized in that, It may also include at least one of the following components: 0.9-1.7% preservative; 0.1-0.3% fragrance; and 0.05-0.15% antioxidant.

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