Plant compound cleansing gel with oil control and acne removal functions and preparation method thereof

Abstract

The present application belongs to the technical field of skin care products, and particularly relates to a plant compound cleansing jelly with oil control and acne removal effects and a preparation method thereof. An amino acid surfactant compound system is adopted to effectively remove excess facial oil and dirt while causing little damage to the skin barrier and having no tight feeling after washing, thus solving the problem of'more oil after washing' caused by excessive defatting of traditional soap-based cleansing products. By compounding Lonicera japonica flower extract with plant extracts such as Sophora flavescens, Scutellaria baicalensis and Hamamelis virginiana and PCA zinc, synergistic effects are produced in terms of inhibiting sebum secretion (oil control), inhibiting Propionibacterium acnes (acne removal) and reducing inflammatory reactions (anti-inflammatory), and compared with single components or simple combinations, the effects are more comprehensive and longer-lasting. In addition, the product provided by the present application is in the form of jelly, is refreshing and not sticky, is easy to rinse, and is suitable for daily use of oily and mixed oily skin.

Description

Technical Field

[0001] This invention belongs to the field of skincare technology, specifically relating to a plant-based compound cleansing gel with oil-controlling and acne-reducing effects and its preparation method. Background Technology

[0002] Oily skin and acne are common skin problems with complex causes, mainly related to excessive sebum secretion, abnormal keratinization of hair follicle openings, excessive proliferation of Propionibacterium acnes, and inflammatory responses. Currently available oil-controlling and acne-fighting facial cleansers fall into two main categories: soap-based products: These have strong cleansing power but are alkaline in pH. Long-term use can disrupt the skin's slightly acidic environment, excessively removing sebum and damaging the skin barrier. This, in turn, stimulates the sebaceous glands to compensate by secreting even more oil, creating a vicious cycle of "the more you wash, the oilier your skin becomes." Products containing single-function ingredients: Such as salicylic acid and benzoyl peroxide. While these ingredients may have some effect, they are often highly irritating and can easily cause skin dryness, peeling, redness, and other intolerance reactions. Furthermore, their single-function approach makes it difficult to address acne problems through multiple pathways (oil control, antibacterial, and anti-inflammatory).

[0003] In recent years, with consumers’ pursuit of safe, gentle and natural products, the development of plant-derived compound facial cleansers with multi-target synergistic effects and gentle properties has become an urgent technical problem to be solved in this field. Summary of the Invention

[0004] In view of this, the present invention provides a plant-based compound facial cleanser with oil-controlling and acne-reducing effects, and a method for preparing the same. The plant-based compound facial cleanser provided by the present invention also has oil-controlling, antibacterial, and anti-inflammatory effects.

[0005] To address the above problems, the present invention provides the following technical solution. This invention provides a plant-based compound cleansing gel with oil-controlling and acne-reducing effects, comprising, by weight percentage: Surfactant: 15%~30%; Moisturizer: 5%~15%; Extract of Lonicera japonica flower from South China: 0.5%~2.0%; Sophora flavescens root extract: 0.3%~1.0%; Scutellaria baicalensis root extract: 0.2%~0.8%; Witch hazel leaf extract: 0.3%~1.0%; PCA zinc: 0.1%~0.5%; Dipotassium glycyrrhizate: 0.05% ~ 0.2%; Chelating agent: 0.05%~0.2%; Preservatives: 0.5% ~ 1.0%; Water: Balance; The plant-based facial cleanser also includes a pH adjuster.

[0006] Preferably, the surfactant includes a primary surfactant and a secondary surfactant; the primary surfactant is an amino acid-based surfactant; and the secondary surfactant is an amphoteric or nonionic surfactant.

[0007] Preferably, the main surfactant is one or more of potassium cocoyl glycinate, sodium lauroyl glutamate, and sodium methyl cocoyl taurate.

[0008] Preferably, the auxiliary surfactant is one or more of lauryl glucoside, decyl glucoside, and cocamidopropyl betaine.

[0009] Preferably, the moisturizer is one or more of glycerin, betaine, butylene glycol, propylene glycol, butylene glycol, and sorbitol; the pH value of the plant-based compound cleansing gel is 5.5 to 6.5.

[0010] Preferably, the chelating agent is disodium EDTA.

[0011] Preferably, the preservative is phenoxyethanol and / or ethylhexylglycerin; the pH adjuster is citric acid and / or sodium citrate.

[0012] This invention also provides a method for preparing the plant-based compound facial cleansing gel described in the above technical solution, comprising the following steps: Water, chelating agent, and humectant are heated and mixed to obtain an aqueous phase.

[0013] The surfactant is dissolved by heating to obtain the surfactant phase; Under homogenization conditions, the surfactant phase is drawn into the aqueous phase for homogenization to obtain an emulsion; After cooling the emulsion, it is mixed with extracts of Lonicera japonica flower, Sophora flavescens root, Scutellaria baicalensis root, Hamamelis fulva leaf, zinc PCA, dipotassium glycyrrhizate, and preservatives to obtain a mixture of materials. After adjusting the pH of the material mixture to 5.5-6.5 with a pH adjuster, it is stirred and defoamed in sequence to obtain the plant compound facial cleansing gel.

[0014] Preferably, the heating and mixing temperature is 75~85℃; the heating and dissolving temperature is 75~85℃.

[0015] Preferably, the temperature of the emulsion after cooling is 40~45℃.

[0016] Compared with existing technologies, the facial cleansing gel provided by this invention has the following advantages: 1. Gentle cleansing without damaging the skin barrier: Utilizing an amino acid surfactant compound system, it effectively removes excess oil and dirt from the face while minimizing damage to the skin barrier. It leaves the skin feeling supple and without tightness after washing, solving the problem of traditional soap-based facial cleansers causing "more oil with each wash" due to excessive degreasing.

[0017] 2. Synergistic effect for significant oil control and acne removal: By scientifically combining extracts of honeysuckle (South China honeysuckle) with extracts of other plants such as sophora flavescens, scutellaria baicalensis, witch hazel, and zinc PCA, it produces a synergistic effect in three aspects: inhibiting sebum secretion (oil control), inhibiting Propionibacterium acnes (acne removal), and reducing inflammatory response (anti-inflammatory). Compared with single ingredients or simple combinations, the effect is more comprehensive and longer lasting.

[0018] 3. Refreshing feel and gentle texture: The product is gel-like, refreshing and non-sticky, easy to rinse, and suitable for daily use of oily and combination skin. Detailed Implementation

[0019] This invention provides a plant-based compound facial cleanser with oil-controlling and acne-reducing effects, comprising, by weight percentage, 15% to 30% surfactant; Moisturizer: 5% ~ 15%; Lonicera confusa flower extract: 0.5%~2.0%; Sophora flavescens root extract: 0.3% ~ 1.0%; Scutellaria baicalensis root extract: 0.2%~0.8%; North American witch hazel (HAMAMELIS VIRGINIANA) leaf extract: 0.3%~1.0%; PCA zinc: 0.1%~0.5%; Dipotassium glycyrrhizate: 0.05% ~ 0.2%; Chelating agent: 0.05%~0.2%; Preservatives: 0.5% ~ 1.0%; Water: Balance; the plant-based facial cleanser also includes a pH adjuster.

[0020] In this invention, the plant-based compound facial cleanser gel comprises 15% to 30% surfactant by weight percentage, specifically 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, or 30%. The surfactant may include a primary surfactant and a secondary surfactant. The primary surfactant may be an amino acid-type surfactant, specifically one or more of potassium cocoyl glycinate, sodium lauroyl glutamate, and sodium methyl cocoyl taurate. The secondary surfactant may be an amphoteric or nonionic surfactant, specifically one or more of lauryl glucoside, decyl glucoside, and cocamidopropyl betaine.

[0021] In this invention, the plant-based compound cleansing gel comprises 5% to 15% moisturizer by weight percentage, specifically 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, or 15%; the moisturizer may be one or more of glycerin, betaine, butylene glycol, propylene glycol, butylene glycol, and sorbitol.

[0022] In this invention, the plant-based compound cleansing gel, by weight percentage, comprises 0.5% to 2.0% of *Lonicera japonica* flower extract, specifically 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, or 2.0%. In this invention, the *Lonicera japonica* flower extract is listed under cosmetic ingredient catalog number 05942.

[0023] In this invention, the plant-based compound cleansing gel comprises 0.3% to 1.0% Sophora flavescens root extract, specifically 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0% by weight. In this invention, the Sophora flavescens root extract is listed under cosmetic ingredient catalog number 04142.

[0024] In this invention, the plant-based compound cleansing gel comprises 0.2% to 0.8% Scutellaria baicalensis root extract, specifically 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, or 0.8% by mass percentage; in this invention, the cosmetic ingredient catalog number of the Scutellaria baicalensis root extract is 03076.

[0025] In this invention, the plant-based compound cleansing gel comprises 0.3% to 1.0% witch hazel leaf extract, specifically 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0% by mass percentage; in this invention, the witch hazel leaf extract is listed in the cosmetic ingredient catalog number 01253.

[0026] In this invention, the plant-based compound facial cleanser contains 0.1% to 0.5% zinc PCA, specifically 0.1%, 0.2%, 0.3%, 0.4%, or 0.5% by weight.

[0027] In this invention, the plant-based compound facial cleanser contains 0.05% to 0.2% dipotassium glycyrrhizate by weight percentage, specifically 0.05%, 0.1%, or 0.2%.

[0028] In this invention, the plant-based compound facial cleanser contains 0.05% to 0.2% chelating agent by weight percentage, specifically 0.05%, 0.1%, or 0.2%; the chelating agent may be disodium EDTA.

[0029] In this invention, the plant-based compound facial cleanser contains 0.5% to 1.0% preservatives by weight percentage, specifically 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0%; the preservatives may be phenoxyethanol and / or ethylhexylglycerin.

[0030] In this invention, the plant-based compound facial cleanser also includes a pH adjuster; the pH adjuster may be citric acid and / or sodium citrate; the pH adjuster is used to adjust the pH value of the plant-based compound facial cleanser to 5.5~6.5.

[0031] In this invention, the plant-based compound facial cleanser gel includes a remainder of water, wherein the water is deionized water.

[0032] This invention also provides a method for preparing the plant-based compound facial cleansing gel described above, comprising the following steps: Water, chelating agent, and humectant are heated and mixed to obtain an aqueous phase.

[0033] The surfactant is dissolved by heating to obtain the surfactant phase; Under homogenization conditions, the surfactant phase is drawn into the aqueous phase for homogenization to obtain an emulsion; After cooling the emulsion, it is mixed with extracts of Lonicera japonica flower, Sophora flavescens root, Scutellaria baicalensis root, Hamamelis fulva leaf, zinc PCA, dipotassium glycyrrhizate, and preservatives to obtain a mixture of materials. After adjusting the pH of the material mixture to 5.5-6.5 with a pH adjuster, it is stirred and defoamed in sequence to obtain the plant compound facial cleansing gel.

[0034] In this invention, the heating and mixing temperature can be 75~85℃, specifically 78℃; the heating and dissolving temperature can be 75~85℃, specifically 78℃. In this invention, the temperature of the emulsion after cooling can be 40~45℃.

[0035] To further illustrate the present invention, the technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0036] Example 1 The mass percentage of each raw material component in Example 1 is shown in Table 1.

[0037] Table 1. Mass percentage of each raw material component in the plant-based compound cleansing gel of Example 1.

[0038] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0039] Preparation method: (1) Add deionized water, disodium EDTA, and humectants (glycerin and betaine) to the aqueous phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0040] (2) Add the surfactants (potassium cocoyl glycinate, lauryl glucoside and cocamidopropyl betaine) to the oil phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0041] (3) Under homogenization conditions, the surfactant phase from step (2) is slowly drawn into the aqueous phase from step (1), and homogenized for 5 minutes until it is completely emulsified and dispersed to obtain an emulsion.

[0042] (4) Stop heating, turn on the cooling water, and stir the emulsion to cool it down to 40°C.

[0043] (5) Add the efficacy composition (South China honeysuckle flower extract, Sophora flavescens root extract, Scutellaria baicalensis root extract, North American witch hazel leaf extract, zinc PCA, dipotassium glycyrrhizate) and preservatives phenoxyethanol and ethylhexylglycerin to the emulsion in step (4), stir evenly, then add the pH adjuster citric acid to adjust the pH value to 6.1, then continue stirring until room temperature, let stand to defoam, and discharge the material after passing the test.

[0044] Experimental results: (1) Appearance: Semi-transparent gel, uniform.

[0045] (2) Stability: After being placed alternately at low temperature (-18 ℃ environment for 12 h) and high temperature (45℃ environment for 12 h) for 3 months, there was no stratification, precipitation or discoloration.

[0046] (3) Oil control efficacy test (using 10 volunteers with oily skin for 28 consecutive days): After 4 weeks of use, the average skin oil content decreased by 32.5% (measured using a Sebumeter sebum analyzer).

[0047] (4) Acne-removing efficacy test (in vitro antibacterial test): The inhibition zone diameter against Propionibacterium acnes reached 15.8 mm (filter paper method, sample concentration 10%).

[0048] Example 2 Table 2. Mass percentage of each raw material component in the plant-based compound cleansing gel of Example 2.

[0049] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0050] The preparation method is the same as in Example 1.

[0051] Experimental results: (1) The product has good stability and appearance: it is a semi-transparent, fluid gel with no sedimentation or layering, presenting a clear and uniform visual appearance.

[0052] (2) Oil control efficacy test (using 10 volunteers with oily skin for 28 consecutive days): After 4 weeks of use, the skin's oil content decreased by an average of 28.1%.

[0053] (3) Acne-removing efficacy test (in vitro antibacterial test): The inhibition zone diameter against Propionibacterium acnes reached 14.2 mm (filter paper method, sample concentration 10%).

[0054] Example 3 Table 3. Mass percentage of each raw material component in the plant-based compound cleansing gel of Example 3.

[0055] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0056] The preparation method is the same as in Example 1.

[0057] Experimental results: (1) The product has good stability, the foam is slightly delicate, the skin feels smoother, and the appearance is a semi-transparent gel texture with moderate fluidity.

[0058] (2) Oil control efficacy test (using 10 volunteers with oily skin for 28 consecutive days): After 4 weeks of use, the average skin oil content decreased by 31.0% (measured using a Sebumeter sebum analyzer).

[0059] (3) Acne-removing efficacy test (in vitro antibacterial test): The inhibition zone diameter against Propionibacterium acnes reached 15.5 mm (filter paper method, sample concentration 10%).

[0060] Comparative Example 1 Table 4. Mass percentage of each raw material component in Comparative Example 1 Plant-based Compound Cleansing Gel

[0061] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0062] Preparation method: (1) Add deionized water, disodium EDTA, and humectants (glycerin and betaine) to the aqueous phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0063] (2) Add the surfactants (potassium cocoyl glycinate, lauryl glucoside and cocamidopropyl betaine) to the oil phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0064] (3) Under homogenization conditions, the surfactant phase from step (2) is slowly drawn into the aqueous phase from step (1), and homogenized for 5 minutes until it is completely emulsified and dispersed to obtain an emulsion.

[0065] (4) Stop heating, turn on the cooling water, and stir the emulsion to cool it down to 40°C.

[0066] (5) Add preservatives (phenoxyethanol and ethylhexylglycerin) to the emulsion in step (4), stir evenly, then add pH adjuster to adjust the pH value to 6.1, then continue stirring until room temperature, let stand to defoam, and discharge after passing the test.

[0067] Experimental results: The inhibition zone diameter against Propionibacterium acnes was 0 mm, indicating no antibacterial effect.

[0068] After 4 weeks of use, the skin's oil content decreased by an average of 8.7% (mainly due to the immediate cleansing effect of surfactants), indicating poor oil control.

[0069] Comparative Example 2 Table 5. Mass percentage of each raw material component in Formula A (Plant-based Compound Cleansing Gel) of Comparative Example 2

[0070] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0071] Preparation method: (1) Add deionized water, disodium EDTA, and humectants (glycerin and betaine) to the aqueous phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0072] (2) Add the surfactants (potassium cocoyl glycinate, lauryl glucoside and cocamidopropyl betaine) to the oil phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0073] (3) Under homogenization conditions, the surfactant phase from step (2) is slowly drawn into the aqueous phase from step (1), and homogenized for 5 minutes until it is completely emulsified and dispersed to obtain an emulsion.

[0074] (4) Stop heating, turn on the cooling water, and stir the emulsion to cool it down to 40°C.

[0075] (5) Add the extract of Lonicera japonica and preservatives (phenoxyethanol and ethylhexylglycerin) to the emulsion in step (4), stir evenly, then add the pH adjuster citric acid to adjust the pH value to 6.1, then continue stirring until room temperature, let stand to defoam, and discharge the material after passing the test.

[0076] Table 6. Mass percentage of each raw material component in Formula B of Comparative Example 2, Plant-Based Compound Cleansing Gel

[0077] Note: 6.1 This refers to using citric acid to adjust the pH of the plant-based compound cleansing gel to 6.1, with a mass ratio of phenoxyethanol to ethylhexylglycerin of 9:1.

[0078] Preparation method: (1) Add deionized water, disodium EDTA, and humectants (glycerin and betaine) to the aqueous phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0079] (2) Add the surfactants (potassium cocoyl glycinate, lauryl glucoside and cocamidopropyl betaine) to the oil phase pot, stir and heat to 78°C, dissolve evenly, and keep warm for later use.

[0080] (3) Under homogenization conditions, the surfactant phase from step (2) is slowly drawn into the aqueous phase from step (1), and homogenized for 5 minutes until it is completely emulsified and dispersed to obtain an emulsion.

[0081] (4) Stop heating, turn on the cooling water, and stir the emulsion to cool it down to 40°C.

[0082] (5) Add zinc PCA and preservatives (phenoxyethanol and ethylhexylglycerin) to the emulsion in step (4), stir evenly, then add citric acid as a pH adjuster to adjust the pH value to 6.1, then continue stirring until room temperature, let stand to defoam, and discharge the material after passing the test.

[0083] Experimental results: The diameter of the inhibition zone against Propionibacterium acnes: 8.2 mm for formulation A and 0 mm for formulation B, both much smaller than 15.8 mm in Example 1.

[0084] After 4 weeks of use, the average skin oil content decreased: 15.3% for Formula A and 18.1% for Formula B, both lower than the 32.5% in Example 1.

[0085] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A plant-based compound cleansing gel with oil-controlling and acne-reducing effects, comprising, by weight percentage: Surfactant: 15%~30%; Moisturizer: 5%~15%; Extract of Lonicera japonica flower from South China: 0.5%~2.0%; Sophora flavescens root extract: 0.3%~1.0%; Scutellaria baicalensis root extract: 0.2%~0.8%; Witch hazel leaf extract: 0.3%~1.0%; PCA zinc: 0.1%~0.5%; Dipotassium glycyrrhizate: 0.05% ~ 0.2%; Chelating agent: 0.05%~0.2%; Preservatives: 0.5% ~ 1.0%; Water: Balance; The plant-based facial cleanser also includes a pH adjuster.

2. The plant-based compound facial cleanser gel as described in claim 1, characterized in that, The surfactant includes a primary surfactant and a secondary surfactant; the primary surfactant is an amino acid-type surfactant; and the secondary surfactant is an amphoteric or nonionic surfactant.

3. The plant-based compound facial cleanser gel as described in claim 2, characterized in that, The main surfactant is one or more of potassium cocoyl glycinate, sodium lauroyl glutamate, and sodium methyl cocoyl taurate.

4. The plant-based compound facial cleanser gel as described in claim 2, characterized in that, The auxiliary surfactant is one or more of lauryl glucoside, decyl glucoside, and cocamidopropyl betaine.

5. The plant-based compound facial cleansing gel as described in claim 1, characterized in that, The moisturizer is one or more of glycerin, betaine, butylene glycol, propylene glycol, butylene glycol and sorbitol; the pH value of the plant-based compound cleansing gel is 5.5~6.

5.

6. The plant-based compound facial cleansing gel as described in claim 1, characterized in that, The chelating agent is disodium EDTA.

7. The plant-based compound facial cleanser gel as described in claim 1, characterized in that, The preservative is phenoxyethanol and / or ethylhexylglycerin; the pH adjuster is citric acid and / or sodium citrate.

8. A method for preparing the plant-based compound facial cleansing gel according to any one of claims 1 to 7, characterized in that, Includes the following steps: Water, chelating agent, and humectant are heated and mixed to obtain an aqueous phase. The surfactant is dissolved by heating to obtain the surfactant phase; Under homogenization conditions, the surfactant phase is drawn into the aqueous phase for homogenization to obtain an emulsion; After cooling the emulsion, it is mixed with extracts of Lonicera japonica flower, Sophora flavescens root, Scutellaria baicalensis root, Hamamelis fulva leaf, zinc PCA, dipotassium glycyrrhizate, and preservatives to obtain a mixture of materials. After adjusting the pH of the material mixture to 5.5-6.5 with a pH adjuster, it is stirred and defoamed in sequence to obtain the plant compound facial cleansing gel.

9. The preparation method according to claim 8, characterized in that, The heating and mixing temperature is 75~85℃; the heating and dissolving temperature is 75~85℃.

10. The preparation method according to claim 8, characterized in that, The temperature of the emulsion after cooling is 40~45℃.

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