Suspended essence oil containing microencapsulated volcanic mud

Abstract

The invention discloses suspension essence oil containing microencapsulated volcanic mud, which is prepared from the following components in percentage by mass: 3 to 8 percent of microencapsulated volcanic mud, 85 to 95 percent of suspension essence oil matrix and 1 to 5 percent of functional additive, core material components of the microencapsulated volcanic mud are volcanic mud, ceramide NP, tetra-hexyldecanol ascorbate or tocopheryl acetate, and core material components of the microencapsulated volcanic mud are nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide or nano silicon dioxide. The component of the wall material is porous silicon dioxide; the suspended essence oil substrate is prepared from the following components: simmondsia chinensis seed oil, squalane, fumed silica and vinyl polydimethylsiloxane; and the functional auxiliary agent comprises the following components: bisabolol, a chelating agent and a preservative. The suspension essence oil provided by the invention integrates the adsorbability of volcanic mud, the barrier repair capacity of ceramide NP and the antioxidant brightening characteristic of VC derivatives through the synergism of microencapsulation and a suspension stable system, realizes the multiple synergistic effects of cleaning, oil control, antioxidant and soothing, and meanwhile, the microcapsule controls the release speed of components, so that the release speed of the components is controlled, and the release effect of the components is improved. Direct contact of volcanic mud to skin is reduced, and the skin feeling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, specifically to a suspended essence oil containing microencapsulated volcanic mud. Background Technology

[0002] Suspended essence oil containing microencapsulated volcanic mud is a skincare product that combines deep cleansing with nourishing and repairing. It uses microencapsulation technology to encapsulate volcanic mud with strong adsorption capacity, allowing it to be precisely released deep into the pores. It effectively removes excess oil, dirt, and makeup residue, thereby achieving deep cleansing, refining pores, and helping to control oil secretion. At the same time, the product is based on skin-friendly essence oil, which is often compounded with a variety of natural mineral ingredients and repairing oils. It can replenish moisture and nutrients to the skin while cleansing, soothe the skin, and help improve dryness. However, while volcanic mud possesses significant adsorption capacity due to its unique physical structure, effectively cleaning oil and dirt from the skin's surface, prolonged contact with the skin may excessively remove sebum, leading to impaired skin barrier function and causing dryness, tightness, or even irritation and sensitivity. Therefore, those skilled in the art have developed a suspended essence oil containing microencapsulated volcanic mud to address the problems mentioned in the background section. Summary of the Invention

[0003] The purpose of this invention is to provide a suspended essential oil containing microencapsulated volcanic mud. Through the synergistic effect of microencapsulation and suspension stabilization system, it integrates the adsorption properties of volcanic mud, the barrier repair ability of ceramide NP, and the antioxidant and brightening properties of VC derivatives, achieving multiple synergistic effects of cleansing, oil control, anti-oxidation, and soothing. At the same time, by controlling the release rate of ingredients through microcapsules, the direct contact of volcanic mud with the skin is reduced, improving the skin feel and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A suspended essential oil containing microencapsulated volcanic mud comprises the following components in the indicated mass percentages: 3-8% microencapsulated volcanic mud, 85-95% suspended essential oil matrix, and 1-5% functional additives. The core material of the microencapsulated volcanic mud consists of volcanic mud, ceramide NP, tetrahexyldecyl ascorbate, or tocopheryl acetate, while the wall material is porous silica. The suspended essential oil matrix comprises jojoba seed oil, squalane, fumed silica, and vinyl polydimethylsiloxane. The functional additives comprise bisabolol, chelating agents, and preservatives.

[0005] As a further embodiment of the present invention: the mass ratio of volcanic mud, ceramide NP, tetrahexyldecyl ascorbate or tocopheryl acetate in the core material component of microencapsulated volcanic mud is 50-70:15-30:10-20.

[0006] As a further embodiment of the present invention: the proportions of each component in the suspended essential oil matrix are 5-15% jojoba seed oil, 2-10% squalane, 0.5-2% fumed silica, and 0.5-1% vinyl polydimethylsiloxane.

[0007] As a further embodiment of the present invention, the proportions of each component in the functional additive are as follows: bisabolol 0.3-0.5%, chelating agent 0.01-0.1%, and preservative 0.1-0.3%.

[0008] As a further embodiment of the present invention: the chelating agent is disodium EDTA, and the preservative is a mixture of 0.5-1% phenoxyethanol and 0.2-0.5% ethylhexylglycerin.

[0009] As a further aspect of the present invention, the preparation method of microencapsulated volcanic mud comprises the following steps: Step 1: Grind the volcanic mud to a particle size ≤5μm, mix it with ceramide NP, tetrahexyldecyl ascorbate or tocopheryl acetate, and use spray drying method with porous silica as the wall material to control the encapsulation rate ≥90%, the capsule wall thickness 1-5μm, and the final particle size 10-50μm. Step 2: After freeze-drying, microencapsulated volcanic mud powder is obtained.

[0010] As a further embodiment of the present invention: the inlet temperature of the spray drying method is 120-150℃, the outlet temperature is 60-80℃, and the atomization pressure is 0.2-0.5MPa.

[0011] As a further aspect of the present invention, the preparation method of the suspension essence oil containing microencapsulated volcanic mud comprises the following steps: Step 1: High-speed shear dispersion of fumed silica in jojoba seed oil (rate 6000 rpm, time 10 min) to form a gel network; Step 2: Pre-wet and disperse the microencapsulated volcanic mud powder and a portion of squalane using a scraper-type stirrer; Step 3: While stirring at low speed (500 rpm), slowly add the slurry from Step 2 into the gel from Step 1 to avoid damaging the network structure. Step 4: Add vinyl polydimethylsiloxane, bisabolol, chelating agent and preservative, and stir homogenously for 15 minutes; Step 5: Adjust the pH of the mixed solution to 5.0-6.0, and fill at a low temperature (<35℃); Step 6: Obtain a suspension of essential oil containing microencapsulated volcanic mud.

[0012] Compared with existing technologies, the advantages of this invention are as follows: The suspended essence oil containing microencapsulated volcanic mud proposed in this invention, through the synergy of microencapsulation and suspension stabilization system, prevents the high-density volcanic mud particles from settling or clumping during storage, ensuring that the product maintains a magnetically levitated state and achieving stable coexistence of mud and oil. It integrates the adsorption properties of volcanic mud, the barrier repair power of ceramide NP, and the antioxidant and brightening properties of VC derivatives, achieving multiple synergistic effects of cleansing, oil control, anti-oxidation, and soothing. It avoids the greasiness of traditional oil products, maintains the integrity of the microcapsule structure, and prevents the ingredients from becoming ineffective due to mechanical shearing or temperature changes, thus achieving the purpose of soothing and repairing. It is suitable for sensitive skin. Moreover, by using microcapsules to control the release rate of ingredients, it reduces the direct contact between volcanic mud and the skin, solving the dryness and irritation problems that may be caused by direct contact of volcanic mud with the skin. Attached Figure Description

[0013] Figure 1 This is a flowchart illustrating the preparation process of volcanic mud composite particle microcapsules according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the preparation process of a suspended essential oil containing microencapsulated volcanic mud according to an embodiment of the present invention. Detailed Implementation

[0014] Example 1 Combination Figure 1 and Figure 2 As shown, the following steps were taken to prepare a suspended essential oil containing microencapsulated volcanic mud, using 1.5 kg of volcanic mud, 95.5% of a suspended essential oil matrix, 10.0% of jojoba seed oil, 5.0% of squalane, 0.8% of fumed silica, 0.7% of vinyl polydimethylsiloxane, 1.5% of functional additives, 0.3% of bisabolol, 0.05% of disodium EDTA (chelating agent), 0.15% of phenoxyethanol, and 0.35% of ethylhexylglycerin (preservative).

[0015] Step 1: Grind 1.5 kg of volcanic mud until the particle size is ≤ 5 μm; Step 2: Melt and mix the ground volcanic mud with 0.75 kg of ceramide NP and 0.75 kg of tetrahexyldecyl ascorbate at 60°C to form a homogeneous core material mixture; Step 3: Disperse the core material mixture with 2.5 kg of porous silica in aqueous phase to obtain a composite primary emulsion; Step 4: The composite primary emulsion was dried using a spray drying method. The inlet temperature of the spray dryer was controlled at 130℃, the outlet temperature at 70℃, and the atomization pressure at 0.3MPa. This yielded microencapsulated volcanic mud powder with a capsule wall thickness of 2μm, a particle size of 25μm, and an encapsulation rate ≥92%.

[0016] Step 5: Freeze-dry the obtained microcapsules to remove residual moisture, and obtain dry, free-flowing microencapsulated volcanic mud powder. Step 6: In the main dispersion tank, add 7.85 kg of jojoba seed oil and stir at a rate of 300 rpm. Then, slowly add 0.8 kg of fumed silica and increase the stirring rate to 6000 rpm. Perform high-speed shear dispersion for 10 minutes until the fumed silica is completely dispersed in the jojoba seed oil to form a stable and transparent three-dimensional gel network structure. Step 7: Select the microencapsulated volcanic mud powder prepared in the above steps, mix and disperse 3.0 kg of microencapsulated volcanic mud powder with 2.0 kg of squalane to form a uniform microencapsulated volcanic mud powder mixture slurry, ensuring that all powders are fully impregnated with oil and that there are no dry powder particles. Step 8: Stir the gel at a rate of 500 rpm, and add the microencapsulated volcanic mud powder mixture to the gel at a uniform speed within 15-20 minutes to ensure that the mixture is fully and evenly mixed with the gel. Step 9: Add the remaining 3.0 kg squalane, 0.7 kg vinyl polydimethylsiloxane, 0.3 kg bisabolol, 0.05 kg disodium EDTA, 0.15 kg phenoxyethanol and 0.35 kg ethylhexylglycerin in sequence, and stir homogenously at 800 rpm for 15 min until all components are completely dispersed and the system presents a uniform and stable suspension state; Step 10: Detect and adjust the pH of the mixed solution to 5.4, and then fill it at a low temperature of 30°C to protect the heat-sensitive components and microcapsule structure, thereby obtaining a suspension of microencapsulated volcanic mud essence oil.

[0017] The suspended essential oil containing microencapsulated volcanic mud prepared by the above method reduces the content of microencapsulated volcanic mud, thus ensuring the adsorption and cleansing effect of volcanic mud while reducing the risk of skin discomfort caused by excessively high concentrations of active ingredients.

[0018] Example 2 Based on Example 1, the following steps were taken to prepare a suspended essential oil containing microencapsulated volcanic mud, using 3.6 kg of volcanic mud, 90.5% of a suspended essential oil matrix, 8.0% of jojoba seed oil, 8.0% of squalane, 1.5% of fumed silica, 0.8% of vinyl polydimethylsiloxane, 3.5% of functional additives, 0.5% of bisabolol, 0.1% of disodium EDTA (chelating agent), 0.3% of phenoxyethanol, and 0.5% of ethylhexylglycerin (preservative).

[0019] Step 1: Grind 3.6 kg of volcanic mud until the particle size is ≤ 5 μm; Step 2: Melt and mix the ground volcanic mud with 1.5 kg of ceramide NP and 0.9 kg of tocopheryl acetate at 60°C to form a homogeneous core material mixture; Step 3: Disperse the core material mixture with 2.5 kg of porous silica in aqueous phase to obtain a composite primary emulsion; Step 4: The composite primary emulsion was dried using a spray drying method. The inlet temperature of the spray dryer was controlled at 140℃, the outlet temperature at 75℃, and the atomization pressure at 0.4MPa. This yielded microencapsulated volcanic mud powder with a capsule wall thickness of 3μm, a particle size of 35μm, and an encapsulation rate ≥93%.

[0020] Step 5: Freeze-dry the obtained microcapsules to remove residual moisture, and obtain dry, free-flowing microencapsulated volcanic mud powder. Step 6: In the main dispersion tank, add 8 kg of jojoba seed oil and stir at a rate of 400 rpm. Then, slowly add 1.5 kg of fumed silica and increase the stirring rate to 6000 rpm. Perform high-speed shear dispersion for 11 min until the fumed silica is completely dispersed in the jojoba seed oil to form a stable and transparent three-dimensional gel network structure. Step 7: Select the microencapsulated volcanic mud powder prepared in the above steps, mix and disperse 6 kg of microencapsulated volcanic mud powder with 3 kg of squalane to form a uniform microencapsulated volcanic mud powder mixture, ensuring that all powders are fully impregnated with oil and that there are no dry powder particles. Step 8: Stir the gel at a rate of 500 rpm, and add the microencapsulated volcanic mud powder mixture to the gel at a uniform speed within 15-20 minutes to ensure that the mixture is fully and evenly mixed with the gel. Step 9: Add the remaining 5 kg squalane, 0.8 kg vinyl polydimethylsiloxane, 0.5 kg bisabolol, 0.1 kg disodium EDTA, 0.3 kg phenoxyethanol and 0.5 kg ethylhexylglycerin in sequence, and stir homogenously at 800 rpm for 15 min until all components are completely dispersed and the system presents a uniform and stable suspension state. Step 10: Detect and adjust the pH of the mixed solution to 5.6, and then fill it at a low temperature of 30°C to protect the heat-sensitive components and microcapsule structure, thereby obtaining a suspension of microencapsulated volcanic mud essence oil.

[0021] The suspended essential oil containing microencapsulated volcanic mud was prepared using the above method. By increasing the spray drying temperature, a denser capsule wall was obtained to achieve reliable control of ingredient release. At the same time, the pH value of the suspended essential oil was adjusted to 5.0-6.0, preferably 5.5±0.1, which is consistent with the natural pH value of human skin. This not only minimizes the product's irritation to the skin and creates a gentle user experience, but also helps maintain the bioactivity of ceramide NP in the formula, allowing it to synergistically work with the adsorption and cleansing effects of the microencapsulated volcanic mud to achieve the desired effect.

[0022] Example 3 Based on Example 1, the microencapsulated volcanic mud suspension essence oil prepared in Example 1 was designated as Product A. The safety of Product A was tested using the following steps: Multiple groups of testers were recruited, and a closed patch test was conducted. 0.02g of product A was applied to the flexor surface of the testers' upper arms, and medical tape was used to cover the application area. The tape was removed after 24 hours. After removal, the skin reaction at the application area was observed at 30 minutes, 24 hours, and 48 hours. Observations revealed that no adverse reactions such as erythema, edema, or itching occurred on the skin application areas of multiple test subjects, indicating that Product A is non-irritating and suitable for sensitive skin.

[0023] Example 4 Based on Example 1, the microencapsulated volcanic mud suspension essence oil prepared in Example 1 was designated as Product A. The human efficacy of Product A was tested using the following steps: Multiple groups of testers were recruited to conduct a 4-week product test. At the same time, a skin moisture meter and a laser Doppler blood flow meter were used to measure the facial skin moisture and blood flow velocity in the cheek area of ​​the testers. During the product test, the testers applied 0.5g of product A to their face after cleansing in the morning and evening. After the cycle ended, the skin moisture meter and laser Doppler blood flow meter were used again to measure the facial skin moisture and blood flow velocity in the cheek area of ​​the testers. The results of the two tests were compared. Comparative test results showed that the stratum corneum moisture content of the test subjects' faces increased from the baseline value of 35.2±2.1AU to 48.5±3.0AU (p<0.01), an increase of 38%, indicating that product A can effectively maintain skin hydration and work synergistically with the repairing power of jojoba seed oil and ceramide NP. Laser Doppler showed that the blood flow velocity in the apple cheek area of ​​the test subjects' faces increased from the baseline of 15.3±1.5PU to 18.9±1.8PU (p<0.05), confirming that the product, through microcapsule-controlled release, soothes the skin and promotes blood circulation, working synergistically with the soothing properties of bisabolol.

[0024] Comparative Example 1 Based on Examples 1 and 2, the microencapsulated volcanic mud suspension essence oils prepared in Examples 1 and 2 were designated as Product A and Product B, respectively, and the volcanic mud suspension essence oil without microencapsulation treatment was designated as Product C. Products A, B, and C were placed in a 45°C constant temperature chamber for accelerated aging for one month and then left to stand at room temperature for three months. The state of the microencapsulated volcanic mud suspension essence oil was observed as follows: After one month of accelerated aging in a 45℃ constant temperature chamber, products A and B showed no sedimentation and no stratification, while product C showed slight adhesion to the wall, obvious stratification, and hardening at the bottom. After being placed at room temperature for 3 months, products A and B showed no sedimentation and were separated into layers, while product C showed no sedimentation but was clearly separated into layers. The separation was temporarily restored after stirring. Therefore, it can be seen that microencapsulation treatment significantly improves the dispersibility and long-term suspension stability of volcanic mud in the oil phase, and avoids precipitation and agglomeration.

[0025] Comparative Example 2 Based on Example 1, the microencapsulated volcanic mud suspension essence oil prepared in Example 1 was designated as Product A, and the suspension essence oil without added volcanic mud was designated as Product B. The cleansing and adsorption capacity, moisturizing and antioxidant properties of Products A and Product B were tested using the following steps: Step 1: Apply an equal amount of makeup to the artificial sebum film. Use product A and product B to clean the artificial sebum film. Measure the amount of residual sebum and makeup after cleaning. It was found that product A had a 45% higher cleansing rate than product B. Step 2: Apply product A and product B to dry pigskin respectively. After 1 hour, 4 hours and 8 hours, use a skin moisture meter to measure the stratum corneum moisture content of the pigskin with product A and product B applied. It was found that the pigskin with product A applied had a 25% higher moisture content than the pigskin with product B applied. Step 3: Dissolve the DPPH solution in anhydrous ethanol or methanol to prepare a 0.1 mmol / L solution. Store the DPPH solution away from light. Then, mix product A and product B with the DPPH solution separately and vortex to allow them to react fully. Let the mixture stand at room temperature away from light for 30 minutes. Finally, measure the absorbance of the mixed solution after the reaction using a spectrophotometer. At the same time, measure the absorbance of the blank control group containing only DPPH solution and solvent. Calculate the free radical scavenging capacity of product A and product B based on the DPPH free radical scavenging rate. It is found that the scavenging rate of product A is 90% higher than that of product B.

[0026] This demonstrates that the adsorption and cleansing effects of volcanic mud are effectively utilized in an oil-based environment. Simultaneously, microencapsulation protects its antioxidant activity and works synergistically with ceramides and oils to maintain high efficiency within the oil matrix, providing long-lasting moisturizing and repairing effects.

[0027] Comparative Example 3 Based on Example 1, the microencapsulated volcanic mud suspension essence oil prepared in Example 1 was designated as Product A, and the volcanic mud suspension essence oil without microencapsulation treatment was designated as Product B. The in vitro sustained-release effects of Products A and Product B were tested using the following steps: Using a Franz diffusion cell, equal amounts of product A and product B were placed in the supply cell. A buffer-ethanol mixture with a pH of 5.5 was used as the receiving solution. The cell was kept at 32±1℃ and continuously stirred. The concentration of ceramide in the receiving solution was measured at 30-minute intervals. It was found that product A showed a stable linear release within 8 hours, with a cumulative release rate of 85%. Product B showed a rapid release of more than 70% of ceramide within the first 2 hours, followed by a slow release.

[0028] Therefore, it can be seen that porous silica microcapsule wall materials can effectively control the release rate of active ingredients, achieving long-term and stable delivery and avoiding sudden release of components.

[0029] The working principle of this invention is as follows: The suspended essence oil containing microencapsulated volcanic mud proposed in this application, through the synergy of microencapsulation and suspension stabilization system, prevents the high-density volcanic mud particles from settling or clumping during storage, ensuring that the product maintains a magnetically levitated state and achieving stable coexistence of mud and oil. It integrates the adsorption properties of volcanic mud, the barrier repair power of ceramide NP, and the antioxidant and brightening properties of VC derivatives, achieving multiple synergistic effects of cleansing, oil control, anti-oxidation, and soothing. It avoids the greasiness of traditional oil products, maintains the integrity of the microcapsule structure, and prevents the ingredients from becoming ineffective due to mechanical shearing or temperature changes, thus achieving the purpose of soothing and repairing. It is suitable for sensitive skin. Moreover, by using microcapsules to control the release rate of the ingredients, it reduces the direct contact between volcanic mud and the skin, solving the dryness and irritation problems that may be caused by direct contact between volcanic mud and the skin.

[0030] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A suspended serum oil containing microencapsulated volcanic mud, characterized in that, The components include the following mass contents: microencapsulated volcanic mud 3-8%, suspended essence oil base 85-95%, and functional auxiliary agent 1-5%, wherein the core component of the microencapsulated volcanic mud is volcanic mud, ceramide NP, tetrahexyldecyl ascorbate or tocopheryl acetate, and the wall component is porous silicon dioxide; the components of the suspended essence oil base are jojoba seed oil, squalane, fumed silicon dioxide, and vinyl dimethicone; and the components of the functional auxiliary agent are bisabolol, chelating agent, and preservative.

2. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The mass ratio of the core component of the microencapsulated volcanic mud, i.e., the mass ratio of volcanic mud, ceramide NP, tetrahexyldecyl ascorbate or tocopheryl acetate, is 50-70:15-30:10-20.

3. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The proportions of the components in the suspended essence oil base are as follows: jojoba seed oil 5-15%, squalane 2-10%, fumed silicon dioxide 0.5-2%, and vinyl dimethicone 0.5-1%.

4. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The proportions of the components in the functional auxiliary agent are as follows: bisabolol 0.3-0.5%, chelating agent 0.01-0.1%, and preservative 0.1-0.3%.

5. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The chelating agent is disodium EDTA, and the preservative is a mixture of 0.5-1% phenoxyethanol and 0.2-0.5% ethylhexylglycerin.

6. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The preparation method of the microencapsulated volcanic mud comprises the following steps: Step one: grind the volcanic mud to a particle size of ≤5 μm, mix it with ceramide NP, tetrahexyldecyl ascorbate or tocopheryl acetate, and use a spray drying method with porous silicon dioxide as the wall material to control the encapsulation rate to be ≥90%, the capsule wall thickness to be 1-5 μm, and the final particle size to be 10-50 μm; Step two: after freeze-drying, obtain the microencapsulated volcanic mud powder.

7. A suspended essential oil containing microencapsulated volcanic mud according to claim 6, characterized in that, The inlet temperature of the spray drying method is 120-150°C, the outlet temperature is 60-80°C, and the atomization pressure is 0.2-0.5 MPa.

8. A suspended essential oil containing microencapsulated volcanic mud according to claim 1, characterized in that, The preparation method of the suspended essence oil containing microencapsulated volcanic mud comprises the following steps: Step one: disperse fumed silicon dioxide in jojoba seed oil at a high speed (speed 6000 rpm, time 10 min) to form a gel network; Step two: pre-wet and disperse the microencapsulated volcanic mud powder and part of squalane using a scraper-type stirring; Step three: under low-speed stirring (speed 500 rpm), slowly add the slurry of step two to the gel of step one to avoid damaging the network structure; Step four: add vinyl dimethicone, bisabolol, chelating agent, and preservative, and homogenously stir for 15 min; Step five: adjust the pH value of the mixed solution to 5.0-6.0, and fill it at a low temperature (<35°C); Step six: obtain the suspended essence oil containing microencapsulated volcanic mud.

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