A composition containing a silicone elastomer gel, and a method for preparing and using the same

Abstract

The application discloses a kind of compositions containing silicone elastomer gel and its preparation method and application, belong to daily chemical hair care technical field.The composition includes silicone elastomer gel system, fat-soluble active ingredient compound, cationic surfactant, thickening agent, emulsifier and humectant etc.Components, wherein silicone elastomer gel system is by polydimethylsiloxane and polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer proportioning compound composition is formed, and is prepared by vacuum emulsification process.The application is endowed with hair silk dull luster hand feeling by gel compounding system, solves the problem that traditional hair conditioner is sticky and remains, and is not nourished deeply;Gel network can load fat-soluble active ingredient, and play synergistic antioxidant repair effect, delay hair scale aging.The composition has excellent storage stability and light stability, is mild and non-irritating to scalp, and can be widely applied to various hair care products.

Description

Technical Field

[0001] This invention belongs to the technical field of daily chemical hair care products, specifically relating to a composition containing an organosilicon elastomer gel, its preparation method, and its application. Background Technology

[0002] As an appendage of the skin, hair's health directly impacts appearance and self-confidence. With the fast pace of life, UV exposure, environmental pollution, frequent dyeing and perming, and excessive cleaning, hair cuticles are easily damaged and lifted, leading to dryness, split ends, frizz, and dullness – all signs of aging. Conditioner, a core product in daily hair care, primarily works by forming a film on the hair surface to fill the gaps between the cuticles, achieving smoothness and moisturizing effects. However, existing products still face many unresolved technical challenges.

[0003] Traditional hair conditioners often use common polydimethylsiloxane (silicone oil) as the main smoothing ingredient, combined with cationic surfactants to achieve hair conditioning effects. While these products can improve hair smoothness in the short term, they have significant drawbacks: First, common silicone oil leaves a strong, unnatural shine after forming a film, and it easily accumulates residue on the hair and scalp. Long-term use can lead to flat, oily hair, increased scalp oil production, and even clogged hair follicles, causing itching, dandruff, and other problems. Second, the nourishing ingredients mostly remain on the surface of the hair, only achieving surface moisture retention and failing to penetrate into the hair cuticle to replenish lost lipids. This makes it difficult to fundamentally repair cuticle damage, resulting in a short-lived and superficial nourishing effect. Third, they lack an effective antioxidant protection system, failing to resist hair oxidative damage caused by ultraviolet rays and free radicals, and cannot slow down the aging of the hair cuticle and the process of hair dryness.

[0004] To address the stickiness issue of silicone oil, some products have begun incorporating silicone elastomer powder. Silicone elastomers possess a three-dimensional cross-linked structure, offering a dry feel and matte finish. However, current technologies often rely on simple physical mixing, failing to establish a stable gel network structure between the elastomer and the base silicone oil. This results in poor elastomer dispersibility, easy aggregation, a rough feel upon application, poor spreadability, and insufficient hair smoothness. Furthermore, fat-soluble active ingredients are difficult to effectively load, easily precipitating or oxidizing during product storage. This leads to poor storage and light stability, causing layering at low temperatures and thinning at high temperatures, resulting in low retention of active ingredients and ultimately significantly reduced efficacy.

[0005] Furthermore, existing hair care products mostly rely on single active ingredients in their antioxidant systems, failing to form a multi-component synergistic antioxidant network. This results in low free radical scavenging efficiency, hindering the achievement of both surface protection and deep repair. How to ensure a smooth, matte finish while achieving efficient loading and deep penetration of active ingredients, enhancing the product's antioxidant and repair capabilities and storage stability, and simultaneously prioritizing scalp gentleness, is a pressing technical challenge in the current daily chemical hair care industry. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a composition containing organosilicon elastomer gel, its preparation method and application, to solve the technical problems of traditional hair conditioners such as insufficient nourishment, easy residue and stickiness, weak antioxidant capacity and poor storage stability, and to achieve the comprehensive effects of silky matte feel, deep antioxidant repair, gentle and non-irritating scalp, and stable system with good storage resistance.

[0007] The objective of this invention can be achieved through the following technical solutions: A hair care composition containing an organosilicone elastomer gel, comprising, by weight, the following components: 8-25 parts of an organosilicone elastomer gel system, 2-8 parts of a fat-soluble active ingredient complex, 1-5 parts of a cationic surfactant, 3-10 parts of a thickener, 1-4 parts of an emulsifier, 5-15 parts of a moisturizer, 0.05-0.3 parts of a chelating agent, 0.05-0.5 parts of a pH adjuster, 0.2-1.0 parts of a preservative, and deionized water to make up to 100 parts; wherein the organosilicone elastomer gel system is composed of polydimethylsiloxane and a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer in a weight ratio of (3-5):1.

[0008] Furthermore, the kinematic viscosity of the polydimethylsiloxane at 25°C is 100-500 mm² / s; the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer is a spherical crosslinked polymer with a crosslinking degree of 3%-8% and an average particle size of 1-20 μm. This particle size range of crosslinked polymer can uniformly fill the micro-gaps of the scales without producing a grainy feel, while ensuring a matte finish and spreadability.

[0009] Furthermore, the fat-soluble active ingredient complex is composed of vitamin E acetate, coenzyme Q10, phytosterols, bisabolol, and squalane in a mass ratio of (2-4):(0.5-1.5):(1-3):(0.5-1):(2-4). The five fat-soluble ingredients complement each other, synergistically constructing a triple-effect system of "antioxidant-repair-soothing": vitamin E acetate and coenzyme Q10 synergistically scavenge free radicals, block oxidation chain reactions, and reduce oxidative damage to the hair cuticle from ultraviolet rays and environmental pollutants; phytosterols and squalane have structures similar to hair lipids, allowing them to penetrate the hair cuticle, replenish lost intercellular lipids, repair the hair cuticle barrier, and delay hair aging; bisabolol soothes the scalp, reduces product irritation to the scalp, and improves user comfort.

[0010] Furthermore, the cationic surfactant is any one or a combination of behenyltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride. Behenyltrimethylammonium chloride is preferred, as its long carbon chain structure can form a uniform adsorption film on the hair surface, resulting in excellent conditioning effects and low irritation.

[0011] Furthermore, the thickener is composed of cetearyl alcohol and hydroxypropyl guar gum in a mass ratio of (8-12):1. Cetearyl alcohol, as a fatty alcohol thickener, can increase the consistency of the system and assist in emulsification, thus improving the product's spreadability; hydroxypropyl guar gum, a cationic modified polysaccharide, can enhance the wet combing properties of hair and improve the low-temperature stability of the system. The combination of the two achieves a balance between consistency and conditioning properties.

[0012] Furthermore, the emulsifier is composed of glyceryl stearate and PEG-100 stearate in a mass ratio of 1:(1-2). This nonionic emulsion system has good compatibility with cationic components and can form a stable O / W emulsion system, ensuring uniform dispersion of the silicone gel and active ingredients. The moisturizer is composed of glycerin, propylene glycol, and panthenol in a mass ratio of (3-5):(2-3):1. Glycerin and propylene glycol provide basic moisturizing and water-locking, while panthenol can penetrate into the hair cortex to replenish moisture, repair hair fibers, and improve hair elasticity.

[0013] Furthermore, the chelating agent is disodium ethylenediaminetetraacetate, which can complex metal ions in the system, improving product stability and the retention rate of active ingredients; the pH adjuster is either citric acid or lactic acid, used to adjust the pH of the system to 4.5-6.0, matching the slightly acidic environment of the scalp and hair, and reducing irritation; the preservative is a compound of phenoxyethanol and ethylhexylglycerin in a mass ratio of (4-6):1, providing mild and broad-spectrum preservation with no formaldehyde release, suitable for the needs of gentle hair care.

[0014] The present invention also provides a method for preparing the above-mentioned hair care composition containing organosilicon elastomer gel, comprising the following steps: S1. Preparation of oil phase: The organosilicon elastomer gel system, fat-soluble active ingredient complex, cationic surfactant, thickener and emulsifier are put into the oil phase pot, stirring is started, and the temperature is heated to 75-85℃. The mixture is kept warm and stirred for 20-40 minutes until the materials are completely dissolved and evenly dispersed to obtain the oil phase mixture. S2. Aqueous phase preparation: Add the humectant and chelating agent to 80%-90% of the formula amount of deionized water, put it into the aqueous phase pot, start stirring, heat to 75-85℃, keep warm and stir for 10-20 minutes until the material is completely dissolved to obtain an aqueous phase mixture. S3. Emulsification and homogenization: The aqueous phase mixture is drawn into a vacuum emulsification pot. While stirring at 30-60 rpm, the oil phase mixture is slowly added to the aqueous phase mixture. After the addition is completed, the system temperature is kept at 75-85℃. The homogenizer is turned on and homogenized at 8000-12000 rpm for 3-8 minutes. Then, the mixture is kept warm and stirred for 15-30 minutes to obtain the emulsified system. S4. Cooling and post-treatment: Turn on the cooling water and stir at a rate of 1-2℃ / min to cool down to 40-45℃. Add the preservative, pH adjuster and remaining deionized water, and continue stirring for 15-25min until the system is uniform. After cooling to room temperature, discharge the material to obtain the hair care composition containing organosilicon elastomer gel.

[0015] Furthermore, in step S3, the homogenization process maintains a vacuum of -0.06 to -0.08 MPa to prevent air bubbles from entering the system and affecting the product's appearance and stability. In step S4, the cooling and stirring speed is 20-40 rpm, and the slow cooling ensures that the gel network structure is not destroyed and maintains the stability of the system.

[0016] The present invention also provides the application of the above-mentioned hair care composition containing organosilicon elastomer gel in hair conditioner, hair lotion, leave-in hair essence, and hair mask, especially suitable for the care of dry, damaged, and aged hair after dyeing and perming.

[0017] The beneficial effects of this invention are: 1. This invention employs a specific ratio of polydimethylsiloxane and a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer to construct a three-dimensional gel network structure in which a continuous oil phase encapsulates crosslinked microspheres. Polydimethylsiloxane, as the continuous phase, forms a uniform and smooth film on the hair surface, giving the hair a silky smooth feel. The spherical crosslinked polymer, filling the gel network, scatters light, eliminating the oily shine of ordinary silicone oil and presenting a natural matte visual effect. Simultaneously, its microstructure reduces friction between hair strands, improving the smoothness of dry hair. The synergistic effect of these two components solves the problems of stickiness, shine, and residue associated with ordinary silicone oil, while avoiding the rough feel and poor spreadability of pure elastomers. This results in hair with both a smooth touch and a natural matte appearance, a refreshing and non-sticky texture, and no scalp oiliness or flatness issues with long-term use.

[0018] 2. The three-dimensional network structure of the silicone elastomer gel serves as a microcarrier for lipid-soluble active ingredients, encapsulating active ingredients such as vitamin E acetate and coenzyme Q10 within the gel, enabling slow release and deep penetration of these ingredients. On one hand, the gel carrier isolates the product from air and light, reducing oxidative inactivation of active ingredients and improving efficacy retention during product shelf life. On the other hand, the gel carries active ingredients into the hair cuticle interstices, preventing them from remaining only on the surface of the hair. Five lipid-soluble active ingredients work synergistically: vitamin E acetate and coenzyme Q10 form a dual antioxidant system, synergistically scavenging free radicals and blocking the chain reaction of oxidative damage, increasing antioxidant efficiency by more than 45% compared to single ingredients; phytosterols and squalane replenish hair lipids, repairing the hair cuticle barrier and improving dryness and split ends from within; bisabolol soothes the scalp and reduces irritation. The gel carrier and active complex work synergistically to achieve "surface protection + deep repair," effectively reducing oxidative damage, delaying cuticle aging, and solving the problems of traditional conditioners' insufficient nourishment and weak antioxidant capacity.

[0019] 3. Through optimized matching of the emulsification system, thickening system, and gel structure, the composition of this invention exhibits excellent storage stability and light stability. After high-temperature, low-temperature, thermal cycling, and strong light irradiation tests, the system showed no stratification, precipitation, or emulsification; the viscosity change rate was less than 10%, and the retention rate of active ingredients was higher than 90%, far superior to ordinary hair care products. Furthermore, the formulation of this invention uses a weakly acidic system combined with soothing ingredients, making it gentle and non-irritating to the scalp. After use, there are no adverse reactions such as itching, redness, or inflammation, resulting in excellent scalp comfort and making it suitable for long-term use by all hair types.

[0020] 4. The preparation method of the present invention adopts a conventional vacuum emulsification process, which does not require special equipment, has strong controllability of process parameters, good batch stability of products, and is suitable for large-scale industrial production. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with embodiments, is provided below.

[0022] The raw materials used in the embodiments and comparative examples of this invention are all commercially available daily chemical products. Specific information is as follows: Polydimethylsiloxane: kinematic viscosity at 25°C 350 mm² / s, commercially available daily chemical grade; Polydimethylsiloxane / vinyldimethylsiloxane crosslinked polymer: crosslinking degree 5%, average particle size 5μm, commercially available daily chemical grade; Vitamin E acetate: content ≥98%, commercially available daily chemical grade; Coenzyme Q10: Content ≥98%, commercially available daily chemical grade; Phytosterols: Soybean-derived, total sterol content ≥95%, commercially available daily chemical grade; Bisabolol: α-Bisabolol, content ≥98%, commercially available daily chemical grade; Squalane: Plant-derived, content ≥99%, commercially available daily chemical grade; Behenyltrimethylammonium chloride: 70% active ingredient content, commercially available daily chemical grade; Cetearyl alcohol: C16 / C18=7 / 3, commercially available daily chemical grade; Hydroxypropyl guar gum: cationic substitution degree 0.12, commercially available daily chemical grade; Glyceryl stearate: Commercially available, chemical grade; PEG-100 stearate: Commercially available, chemical grade; Glycerin: Content ≥99.5%, commercially available daily chemical grade; Propylene glycol: content ≥99.5%, commercially available daily chemical grade; Panthenol: Content ≥98%, commercially available daily chemical grade; Disodium EDTA: Commercially available daily chemical grade; Citric acid: Citric acid monohydrate, commercially available daily chemical grade; Phenoxyethanol: Commercially available daily chemical grade; Ethylhexylglycerin: Commercially available daily chemical grade; Amino silicone oil: ammonia value 0.6 mmol / g, viscosity 1000 mm² / s, commercially available daily chemical grade; Deionized water: homemade, conductivity ≤10μS / cm.

[0023] Examples 1-3 Examples 1-3 all prepared hair care compositions according to the technical solution of the present invention. The amounts of each component (by mass) are shown in Table 1 below. The preparation methods all adopted the following steps: S1. Preparation of oil phase: The organosilicon elastomer gel system, fat-soluble active ingredient complex, cationic surfactant, thickener and emulsifier are put into the oil phase pot, stirring is turned on (40 rpm), heated to 80°C, and stirred for 30 min until the materials are completely dissolved and evenly dispersed to obtain the oil phase mixture. S2. Aqueous phase preparation: Add the humectant and chelating agent to 85% of the formula amount of deionized water, put it into the aqueous phase pot, turn on the stirring (30 rpm), heat to 80℃, keep warm and stir for 15 minutes until the materials are completely dissolved to obtain an aqueous phase mixture. S3. Emulsification and Homogenization: The aqueous phase mixture is drawn into a vacuum emulsification pot. While stirring at 45 rpm, the oil phase mixture is slowly added to the aqueous phase mixture, with the addition time controlled at 10 min. After the addition is completed, the system temperature is kept at 80℃, and the homogenizer is turned on to homogenize at 10000 rpm for 5 min. The vacuum degree is maintained at -0.07 MPa during the homogenization process. Then, the mixture is kept warm and stirred for 20 min to obtain the emulsified system. S4. Cooling and post-processing: Turn on the cooling water and stir at a rate of 1.5℃ / min to cool down to 42℃, with a stirring speed of 30 rpm; add preservative, pH adjuster and remaining deionized water, and continue stirring for 20 minutes until the system is uniform. After cooling to room temperature, discharge the material to obtain the hair care composition.

[0024] Table 1. Dosage of components in Examples 1-3 (parts by mass) polydimethylsiloxane 12 16 8 Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 3 4 2 Vitamin E acetate 1.5 2 1 Coenzyme Q10 0.5 0.8 0.3 Phytosterols 1 1.2 0.7 Bisabolol 0.5 0.6 0.3 squalane 1.5 1.9 1 behenyltrimethylammonium chloride 3 4 2 Cetearyl alcohol 5 7 3.5 Hydroxypropyl guar gum 0.5 0.7 0.4 Glyceryl stearate 1 1.2 0.8 PEG-100 stearate 1.5 1.8 1.2 glycerin 4 5 3 Propylene glycol 2.5 3 2 Panthenol 1 1.2 0.8 Disodium ethylenediaminetetraacetate 0.1 0.15 0.08 Citric acid 0.2 0.25 0.15 Phenoxyethanol 0.5 0.6 0.4 Ethylhexylglycerin 0.1 0.12 0.08 Deionized water Supplement to 100 Supplement to 100 Supplement to 100 Note: In Example 1, the total amount of the organosilicon elastomer gel system was 15 parts, and the mass ratio of polydimethylsiloxane to crosslinked polymer was 4:1; the total amount of the lipid-soluble active ingredient complex was 5 parts, and the mass ratio of each component was 3:1:2:1:3.

[0025] In Example 2, the total amount of the organosilicon elastomer gel system was 20 parts, with a mass ratio of 4:1; the total amount of the lipid-soluble active ingredient complex was 6.5 parts.

[0026] In Example 3, the total amount of the organosilicon elastomer gel system was 10 parts, with a mass ratio of 4:1; the total amount of the lipid-soluble active ingredient complex was 3.3 parts.

[0027] Comparative Example 1 It does not contain polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer, but instead uses an equal amount of polydimethylsiloxane, meaning the organosilicon component is only 15 parts of polydimethylsiloxane; Comparative Example 2 It does not contain polydimethylsiloxane, but is replaced with an equal amount of polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer, meaning that the organosilicon component is only 15 parts of cross-linked polymer. Comparative Example 3 Replace the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer with an equal amount of amino silicone oil, i.e., the organosilicon component is 12 parts polydimethylsiloxane + 3 parts amino silicone oil. Comparative Example 4 The complex containing no fat-soluble active ingredients was replaced with an equal amount of polydimethylsiloxane, i.e., the amount of polydimethylsiloxane was adjusted to 17 parts, and the remaining components were the same as in Example 1. Comparative Example 5 Vitamin E acetate was removed from the fat-soluble active ingredient complex. The 1.5 parts lost were made up by the other four active ingredients in the same proportion as in Example 1. Comparative Example 6 Coenzyme Q10 was removed from the fat-soluble active ingredient complex. The 0.5 part that was lost was made up by the other four active ingredients in the same proportion as in Example 1. Comparative Example 7 Phytosterols were removed from the fat-soluble active ingredient complex, and the reduced amount was made up by the other four active ingredients in equal proportions. The remaining components were the same as in Example 1. Comparative Example 8 Bisabolol was removed from the lipid-soluble active ingredient complex. The 0.5 part that was lost was made up by the other four active ingredients in the same proportion as in Example 1. Comparative Example 9 Squalane was removed from the fat-soluble active ingredient complex, and the 1.5 parts lost were made up by the other four active ingredients in the same proportion as in Example 1. Comparative Example 10 Instead of using an oil-phase blending method, the organosilicon elastomer gel system was added to the oil phase, and the lipid-soluble active ingredient complex was directly added to the aqueous phase. The rest of the preparation process and component dosage were the same as in Example 1 (i.e., the active ingredient was not encapsulated by the gel).

[0028] Performance testing methods 1. Physicochemical stability test (1) Room temperature stability: Place the sample in a 25℃ constant temperature oven for 3 months and observe whether there are any abnormalities such as layering, precipitation, discoloration, or change in taste. (2) High temperature stability: The sample was placed in a constant temperature chamber at 48℃ for 1 month, and the appearance changes were observed. The viscosity before and after placement was tested, and the viscosity change rate was calculated: Viscosity change rate = |Viscosity after placement - Initial viscosity| / Initial viscosity × 100%; (3) Low temperature stability: Place the sample in a -15℃ refrigerator for 1 month, and after it is taken out and restored to room temperature, observe whether the appearance is layered or precipitated; (4) Stability of thermal cycling: The sample was placed in an environment of -15℃ to 48℃ for 10 cycles, each lasting 24 hours. The appearance was observed after the cycle was completed. (5) Light stability: The sample was placed in a 4500 lx light box (25℃) for 1 month, and the appearance changes were observed. The retention rate of coenzyme Q10 was tested by high performance liquid chromatography.

[0029] 2. Sensory performance evaluation Ten professional evaluators with over three years of experience in evaluating daily chemical products were selected. Using a half-head test method, damaged hair strands were treated with equal amounts of sample. Five indicators were scored: wet hair combability, dry hair smoothness, oiliness, matte finish, and residue. Each indicator was scored out of 10, and the average score was taken as the final score. Lower scores for oiliness and residue indicated better results, while higher scores for the other indicators indicated better results.

[0030] 3. Scalp comfort test Thirty healthy volunteers with no history of scalp disease were selected. A patch test was used in combination with the application of the sample: the sample was applied to the patch on the inner side of the subject's forearm and removed after 24 hours. Skin redness and itching were observed at 48 hours and 72 hours. At the same time, the volunteers used the sample once a day for 7 consecutive days, and adverse reactions such as scalp itching, redness, and inflammation were recorded. Comfort was rated on a scale of 1 to 10, with higher scores indicating better comfort.

[0031] 4. Antioxidant performance test The antioxidant capacity of the samples was tested using the DPPH free radical scavenging method: A 0.1 mmol / L DPPH ethanol solution was prepared. 2 mL of the sample solution (diluted with ethanol) was mixed with 2 mL of the DPPH solution, and the mixture was allowed to stand in the dark for 30 min. The absorbance A1 was measured at 517 nm. Simultaneously, the absorbance A0 of the mixture of 2 mL DPPH solution and 2 mL ethanol, and the absorbance A2 of the mixture of 2 mL sample solution and 2 mL ethanol were measured. The free radical scavenging rate was calculated using the following formula: Clearance rate (%) = [1-(A1-A2) / A0]×100%.

[0032] 5. Hair moisturizing performance test Take a damaged hair bundle dried to constant weight and weigh its initial weight m0; after processing with an equal amount of sample, place it in a constant temperature and humidity chamber (25℃, 60% relative humidity) for 24 hours and weigh the hair bundle m1; rinse the hair bundle with clean water, dry it to constant weight, and weigh it m2. Calculate the hair moisture retention rate using the following formula: Moisturizing rate (%) = (m1-m2) / (m0-m2)×100%.

[0033] Test Results and Analysis 1. Physicochemical stability test results The physicochemical stability test results of each embodiment and comparative example are shown in Table 2 below.

[0034] Table 2. Results of Physicochemical Stability Tests Example 1 No abnormalities 6.2 No abnormalities No abnormalities 92.3 Example 2 No abnormalities 5.8 No abnormalities No abnormalities 93.1 Example 3 No abnormalities 7.5 No abnormalities No abnormalities 90.7 Comparative Example 1 No abnormalities 8.9 No abnormalities Slight stratification 76.5 Comparative Example 2 There is a small amount of sediment at the bottom. 18.3 Aggregation and clumping Severe stratification 72.1 Comparative Example 3 No abnormalities 10.5 No abnormalities Slight stratification 78.4 Comparative Example 4 No abnormalities 7.1 No abnormalities No abnormalities - Comparative Example 5 No abnormalities 6.8 No abnormalities No abnormalities 88.5 Comparative Example 6 No abnormalities 6.5 No abnormalities No abnormalities 85.2 Comparative Example 7 No abnormalities 7.0 No abnormalities No abnormalities 91.0 Comparative Example 8 No abnormalities 6.7 No abnormalities No abnormalities 91.8 Comparative Example 9 No abnormalities 7.3 No abnormalities No abnormalities 90.2 Comparative Example 10 Slight oil slick 12.6 Active ingredient precipitation Clear layering 68.7 As can be seen from the data in Table 2: Examples 1-3 of this invention demonstrated excellent performance in all stability tests. No stratification or precipitation was observed after exposure to room temperature, high temperature, low temperature, and thermal cycling. The viscosity change rate at high temperatures was less than 8%, and the coenzyme Q10 retention rate was higher than 90% after one month of light exposure, exhibiting excellent storage and light stability. This is because the three-dimensional network structure of the silicone elastomer gel can stably encapsulate the active ingredients. Combined with an optimized emulsification and thickening system, it effectively prevents the migration and precipitation of active ingredients. Simultaneously, the gel network can block light from damaging the active ingredients.

[0035] Comparative Example 1 (without cross-linked polymer) showed an increased viscosity change rate at high temperatures, slight stratification during thermal cycling, and a significant decrease in the retention rate of photoactive ingredients upon irradiation. This indicates that the gel network formed by the cross-linked polymer is crucial for improving system stability and protecting active ingredients.

[0036] Comparative Example 2 (without polydimethylsiloxane) showed the worst stability, exhibiting precipitation, clumping, and severe stratification. This is because the pure cross-linked polymer cannot form a continuous oil phase system, has poor dispersibility, and is prone to agglomeration and sedimentation. This demonstrates that polydimethylsiloxane is indispensable for the stability of the continuous phase gel system, and only by combining the two can a stable gel network be formed.

[0037] Comparative Example 3 (replaced with amino silicone oil) showed decreased stability and reduced retention rate of photoactive ingredients, indicating that the crosslinking polymer selected in this invention is irreplaceable in constructing gel networks and loading active ingredients, and ordinary amino silicone oil cannot achieve the same effect.

[0038] Comparative Example 10 (active ingredient not encapsulated by gel) showed floating oil, layering, and precipitation of active ingredient, with the lowest light retention rate. This demonstrates that the gel loading method with oil phase blending can effectively fix active ingredients and significantly improve product stability and active ingredient retention rate, which is one of the key technical means of this invention.

[0039] Comparative Examples 5-9 only lacked a single active ingredient, which had little impact on the stability of the system. This indicates that the stability is mainly determined by the gel and emulsion system, and the adjustment of the active ingredient does not affect the basic stability of the system.

[0040] 2. Sensory performance evaluation results The sensory performance scores of each embodiment and comparative example are shown in Table 3 below.

[0041] Table 3 Sensory performance evaluation results (scores) Example 1 8.7 8.9 2.3 8.5 2.1 Example 2 9.1 9.2 2.5 8.8 2.3 Example 3 8.2 8.3 2.0 8.1 1.9 Comparative Example 1 8.0 7.5 5.8 4.2 5.6 Comparative Example 2 6.3 6.5 3.1 7.8 3.5 Comparative Example 3 8.3 8.1 4.5 5.3 4.2 Comparative Example 4 8.5 8.7 2.4 8.3 2.2 Comparative Example 5 8.6 8.8 2.3 8.4 2.1 Comparative Example 6 8.7 8.8 2.4 8.5 2.2 Comparative Example 7 8.5 8.6 2.3 8.4 2.2 Comparative Example 8 8.6 8.8 2.3 8.5 2.1 Comparative Example 9 8.4 8.5 2.4 8.3 2.2 Comparative Example 10 7.9 8.0 3.2 7.6 3.4 As can be seen from the data in Table 3: The embodiments of this invention exhibit high levels of both wet hair combability and dry hair smoothness, while scoring low on greasiness and residue, and high on matte finish, achieving a balance of "smoothness + matteness + freshness." This is attributed to the synergistic effect of polydimethylsiloxane and cross-linked polymers: polydimethylsiloxane provides a smooth base, cross-linked polymers scatter light to achieve a matte effect, and the gel structure reduces excessive silicone oil deposition on the hair surface, lowering stickiness and residue.

[0042] Comparative Example 1 (without cross-linked polymer) showed a significant increase in greasiness and residue, a substantial decrease in matte finish, and noticeable oiliness in the hair, proving that cross-linked polymer is the core component for achieving a matte finish and reducing stickiness.

[0043] Comparative Example 2 (without polydimethylsiloxane) showed a significant decrease in smoothness, a rough feel, and poor combability, indicating that the continuous smooth film provided by polydimethylsiloxane is indispensable, and only a combination of the two can achieve both smoothness and matte finish.

[0044] Although Comparative Example 3 (replaced with amino silicone oil) has a certain degree of smoothness, it is too greasy and has a poor matte effect, which cannot achieve the feel of using the present invention, further proving the unique advantages of the gel compound system of the present invention.

[0045] Comparative Example 4 (without active ingredient) has similar sensory properties to the examples, indicating that the active ingredient mainly affects efficacy and has little impact on feel; Comparative Examples 5-9 lack a single active ingredient, and their sensory properties do not change significantly, verifying that sensory properties are mainly determined by the organosilicon gel system.

[0046] Comparative Example 10 (without gel loading) showed a decrease in feel, and an increase in greasiness and residue, because the active ingredients tend to accumulate on the surface, affecting the feel of use. This proves that gel loading can make the active ingredients evenly distributed and improve the user experience.

[0047] 3. Results of scalp comfort and efficacy tests The test results of scalp comfort, antioxidant and moisturizing performance of each embodiment and comparative example are shown in Table 4 below.

[0048] Table 4 Results of Efficacy and Comfort Tests Example 1 9.2 68.5 32.7 Example 2 9.0 73.2 35.1 Example 3 9.3 62.4 29.8 Comparative Example 1 7.5 42.3 24.5 Comparative Example 2 7.8 38.6 22.1 Comparative Example 3 7.2 45.1 25.3 Comparative Example 4 8.1 21.7 20.4 Comparative Example 5 8.8 52.6 28.3 Comparative Example 6 9.0 49.8 29.5 Comparative Example 7 9.1 65.3 25.6 Comparative Example 8 7.6 67.2 31.5 Comparative Example 9 9.0 63.1 26.2 Comparative Example 10 8.0 41.5 23.7 As can be seen from the data in Table 4: In all embodiments of this invention, the scalp comfort score was higher than 9 points, and none of the 30 volunteers experienced adverse reactions such as itching, redness, or inflammation, demonstrating excellent scalp gentleness. This is attributed to the mildly acidic formula system and the soothing effect of bisabolol, while the gel system reduces direct irritation between the active ingredients and the scalp, making it safe and burden-free for long-term use.

[0049] The DPPH free radical scavenging rate and hair moisturizing rate of the examples were significantly higher than those of the comparative examples, proving that the composition of the present invention has excellent antioxidant capacity and deep moisturizing effect. Among them, the free radical scavenging rate of Example 1 reached 68.5%, which was much higher than that of Comparative Example 4 (no active ingredient, 21.7%), and also higher than that of Comparative Examples 5-9 (lacking a single active ingredient), indicating that the antioxidant system constructed by the synergy of the five active ingredients has a significant effect and none of them can be omitted.

[0050] The antioxidant capacity and moisturizing rate of Comparative Examples 1, 2, and 3 all decreased significantly. This is partly due to the incomplete gel system and poor loading effect of active ingredients; on the other hand, it also proves that the silicone gel itself can help fill the cuticle, improve water retention capacity, and synergistically enhance the effect with active ingredients.

[0051] Comparative Example 10 (without gel loading) showed a significant decrease in antioxidant capacity and moisturizing rate, approaching that of Comparative Example 4. This indicates that active ingredients not encapsulated by gel have difficulty penetrating the cuticle and mostly remain on the surface, easily washed away, and unable to exert their deep effects. Gel loading is key to achieving deep penetration of active ingredients and enhancing efficacy. The synergistic effect between gel and active ingredients achieves a technical effect of 1+1>2, which is the core inventive aspect of this invention.

[0052] Comparative Example 8 (without bisabolol) showed a significant decrease in scalp comfort, indicating that bisabolol plays an important role in improving scalp gentleness; Comparative Examples 7 and 9 (without phytosterols / squalane) showed a decrease in moisturizing rate, proving that both are core components for deep nourishment and repair.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A hair care composition containing an organosilicon elastomer gel, characterized in that, By weight, it includes the following components: 8-25 parts of silicone elastomer gel system; 2-8 parts of a fat-soluble active ingredient complex; 1-5 parts of cationic surfactant; Thickener 3-10 parts; 1-4 parts emulsifier; 5-15 parts moisturizer; Chelating agent 0.05-0.3 parts; pH adjuster 0.05-0.5 parts; Preservative: 0.2-1.0 parts; Add deionized water to bring the total to 100 parts; The organosilicon elastomer gel system is composed of polydimethylsiloxane and polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer in a mass ratio of (3-5):

1.

2. The hair care composition containing organosilicon elastomer gel according to claim 1, characterized in that, The kinematic viscosity of the polydimethylsiloxane at 25°C is 100-500 mm² / s; the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer is a spherical crosslinked polymer with a crosslinking degree of 3%-8% and an average particle size of 1-20 μm.

3. The hair care composition containing an organosilicon elastomer gel according to claim 1, characterized in that, The fat-soluble active ingredient complex is composed of vitamin E acetate, coenzyme Q10, phytosterol, bisabolol, and squalane in a mass ratio of (2-4):(0.5-1.5):(1-3):(0.5-1):(2-4).

4. The hair care composition containing an organosilicon elastomer gel according to claim 1, characterized in that, The cationic surfactant is any one or a combination of behenyltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride.

5. The hair care composition containing an organosilicon elastomer gel according to claim 1, characterized in that, The thickener is composed of cetearyl alcohol and hydroxypropyl guar gum in a mass ratio of (8-12):

1.

6. The hair care composition containing an organosilicon elastomer gel according to claim 1, characterized in that, The emulsifier is composed of glyceryl stearate and PEG-100 stearate in a mass ratio of 1:(1-2); the moisturizer is composed of glycerin, propylene glycol and panthenol in a mass ratio of (3-5):(2-3):

1.

7. The hair care composition containing an organosilicon elastomer gel according to claim 1, characterized in that, The chelating agent is disodium ethylenediaminetetraacetate; the pH adjuster is either citric acid or lactic acid; the preservative is a mixture of phenoxyethanol and ethylhexylglycerin in a mass ratio of (4-6):

1.

8. A method for preparing a hair care composition containing an organosilicon elastomer gel as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Preparation of oil phase: The organosilicon elastomer gel system, fat-soluble active ingredient complex, cationic surfactant, thickener and emulsifier are put into the oil phase pot, stirring is started, and the temperature is heated to 75-85℃. The mixture is kept warm and stirred for 20-40 minutes until the materials are completely dissolved and evenly dispersed to obtain the oil phase mixture. S2. Aqueous phase preparation: Add the humectant and chelating agent to 80%-90% of the formula amount of deionized water, put it into the aqueous phase pot, start stirring, heat to 75-85℃, keep warm and stir for 10-20 minutes until the material is completely dissolved to obtain an aqueous phase mixture. S3. Emulsification and homogenization: The aqueous phase mixture is drawn into a vacuum emulsification pot. While stirring at 30-60 rpm, the oil phase mixture is slowly added to the aqueous phase mixture. After the addition is completed, the system temperature is kept at 75-85℃. The homogenizer is turned on and homogenized at 8000-12000 rpm for 3-8 minutes. Then, the mixture is kept warm and stirred for 15-30 minutes to obtain the emulsified system. S4. Cooling and post-treatment: Turn on the cooling water and stir at a rate of 1-2℃ / min to cool down to 40-45℃. Add the preservative, pH adjuster and remaining deionized water, and continue stirring for 15-25min until the system is uniform. After cooling to room temperature, discharge the material to obtain the hair care composition containing organosilicon elastomer gel.

9. The method for preparing the hair care composition containing organosilicon elastomer gel according to claim 8, characterized in that, In step S3, the homogenization process maintains a vacuum of -0.06 to -0.08 MPa; in step S4, the cooling and stirring speed is 20 to 40 rpm.

10. The use of a hair care composition containing an organosilicon elastomer gel as described in any one of claims 1-7 in hair conditioners, hair lotions, leave-in hair serums, and hair masks.