High-stability soap-based cleansing composition as well as preparation method and application thereof

Abstract

The invention discloses a high-stability soap-based cleansing composition and a preparation method and application thereof, the high-stability soap-based cleansing composition comprises an oil-phase component and a water-phase component, the oil-phase component comprises fatty acid, an emulsifier, white beeswax, hydroxy stearic acid and glyceryl hydroxy stearate, and the water-phase component comprises polyol, alkali and water; in the soap-based cleansing composition, the total feeding amount of the white beeswax, the hydroxy stearic acid and the glyceryl hydroxystearate accounts for 1%-10%, and the feeding mass ratio of the white beeswax to the hydroxy stearic acid to the glyceryl hydroxystearate is (5-30): 1: (1.5-6); according to the invention, the problem that soap blocks are easy to gather and difficult to disperse during saponification can be solved, the mass production saponification reaction can be smoothly and efficiently carried out, the paste forming temperature can be increased to more than 50 DEG C, the high-temperature stability of the soap base in cleansing is obviously improved, the problem of high-temperature water formation of the soap base in cleansing is smoothly solved, and the long-term stability investigation shows that the soap base has a good cleansing effect. The stability at each temperature is excellent, and the problems of'water outlet 'or paste roughness and the like are solved.

Description

Technical Field

[0001] This invention relates to the field of daily chemical products, specifically to a highly stable soap-based facial cleanser composition, its preparation method, and its application. Background Technology

[0002] There are many different types of facial cleansers on the market, generally categorized into cream, gel, and mousse types. Cream-based cleansers have gained widespread attention and use in recent years due to their convenience. Cream-based cleansers are typically divided into two main categories: soap-based and amino acid-based. Soap-based cleansers are particularly popular with consumers, especially men and those with oily skin, because of their low price, rich lather, and refreshing feel.

[0003] The principle behind soap-based facial cleansers is the acid-base neutralization reaction between higher fatty acids with different carbon chains (typically 12-18 carbon chains) and a strong alkali at high temperatures, producing potassium salts of fatty acids. These salts contain both hydrophilic and lipophilic groups, making them anionic surfactants with excellent foaming and cleaning power. They are alkaline in pH, and this reaction process is also known as "saponification." During the preparation process, after the saponification reaction is complete, the resulting fatty acid salts gradually arrange themselves into a compact microstructure as the temperature decreases. Macroscopically, this manifests as the initially melted soap solution gradually solidifying into a low-flow or non-flowing paste when cooled to a certain temperature (the solidification point).

[0004] However, in practice, soap-based facial cleansers present significant challenges in both preparation and use: If the large amount of soap produced during the saponification process cannot be quickly dispersed or dissolved, it can easily aggregate into large soap clumps within a short period of time, preventing the saponification process from continuing. This situation is very likely to occur during large-scale production. In order to ensure the smooth completion of the saponification reaction during large-scale production, soap-based facial cleansers usually contain a high content of polyols to disperse the soap clumps. However, a high content of polyols can easily cause phase separation and precipitation of the paste at room temperature, which is what consumers perceive as "watering out." Alternatively, the amount of soap produced can be reduced by lowering the fatty acid content, but this can easily lower the curing temperature, leading to problems such as softening or even watering of the paste at high temperatures during product transportation and use. Meanwhile, the setting point of soap-based facial cleansers is typically between 38-45℃. Above this temperature, the cleanser gradually softens and may even melt into a soapy liquid. With global warming, products are highly susceptible to reaching this setting point during use or transportation, leading to thinning or watery textures when used by consumers. To raise the setting point, the fatty acid content is usually increased. However, increasing the soap content makes saponification difficult in large-scale production and enhances the product's degreasing properties, resulting in increased skin irritation and a noticeable tightness.

[0005] It is evident that existing soap-based facial cleansers suffer from significant shortcomings in both preparation and use. Summary of the Invention

[0006] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide an improved soap-based facial cleanser composition.

[0007] Furthermore, the soap-based facial cleanser composition of the present invention has excellent long-term stability, does not become thin or watery at high temperatures, and does not become rough at low temperatures. Moreover, the saponification process is easy to implement, solving the long-standing problem of soap blocks being easy to aggregate and difficult to disperse in large-scale production.

[0008] The present invention also provides a method for preparing the above-mentioned soap-based facial cleansing composition and its application in the preparation of soap-based facial cleansing products, wherein the soap-based facial cleansing products include soap-based facial washes.

[0009] To achieve the above objectives, the present invention employs the following technical solution: A soap-based facial cleanser composition comprising an oil phase component and an aqueous phase component, wherein the oil phase component comprises fatty acids, emulsifiers, beeswax, hydroxystearic acid, and glyceryl hydroxystearate, and the aqueous phase component comprises polyols, alkali, and water; In the soap-based facial cleansing composition, the total amount of white beeswax, hydroxystearic acid and glyceryl hydroxystearate accounts for 1%-10% by mass percentage, and the mass ratio of white beeswax, hydroxystearic acid and glyceryl hydroxystearate is 5-30:1:1.5-6.

[0010] In this invention, based on mass percentage, the total amount of the white beeswax, the hydroxystearic acid, and the glyceryl hydroxystearate in the soap-based facial cleanser composition is 1%-10%, and the numerical range "1%-10%" includes 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, and 10%.

[0011] In some embodiments of the present invention, the total amount of the white beeswax, the hydroxystearic acid and the glyceryl hydroxystearate in the soap-based facial cleansing composition is 3%-8.5% by weight percentage.

[0012] In this invention, the mass ratio of the white beeswax, the hydroxystearic acid, and the glyceryl hydroxystearate is 5-30∶1∶1.5-6. The numerical range "5-30" includes 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, and 30, and the numerical range "1.5-6" includes 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, and 6.

[0013] In some embodiments of the present invention, the mass ratio of the white beeswax, the hydroxystearic acid and the glyceryl hydroxystearate is 7.5-25:1:2-6.

[0014] In some embodiments of the present invention, the acid value of the white beeswax is 17-24 mgKOH / g.

[0015] In some embodiments of the present invention, the ratio of the total mass of the white beeswax, the hydroxystearic acid and the glyceryl hydroxystearate to the mass of the fatty acid is 1:2-10, and more specifically 1:3-8.

[0016] In some embodiments of the present invention, the white beeswax accounts for 2%-6% of the soap-based facial cleansing composition, the hydroxystearic acid accounts for 0.1%-1% of the composition, and the glyceryl hydroxystearate accounts for 0.5%-3% of the composition, by weight percentage.

[0017] Furthermore, by weight percentage, the white beeswax accounts for 3%-5% of the soap-based facial cleanser composition, the hydroxystearic acid accounts for 0.1%-0.8% of the composition, and the glyceryl hydroxystearate accounts for 0.6%-2.0% of the composition.

[0018] According to the present invention, hydroxystearic acid and glyceryl hydroxystearate can be derived from independent raw materials or from a combination of the two.

[0019] In some embodiments of the present invention, the mass ratio of the fatty acid to the alkali is 3-8:1, more specifically 4-6.5:1.

[0020] According to some specific aspects of the present invention, the mass ratio of the fatty acid to the alkali is 4.5-5.2:1.

[0021] In some embodiments of the present invention, the fatty acid includes one or more combinations selected from stearic acid, palmitic acid, myristic acid and lauric acid.

[0022] In this invention, the alkali is used to neutralize the saponification reaction of fatty acids to form fatty acid soaps. In some embodiments of this invention, the alkali is one or more combinations selected from sodium hydroxide, potassium hydroxide, and tromethamine. According to one specific aspect of this invention, the alkali is potassium hydroxide.

[0023] In some embodiments of the present invention, the fatty acid accounts for 20%-38% of the soap-based facial cleansing composition by weight percentage.

[0024] In some embodiments of the present invention, the alkali accounts for 5%-7% of the soap-based facial cleansing composition by weight percentage.

[0025] In some embodiments of the present invention, the fatty acid is composed of stearic acid, palmitic acid, myristic acid, and lauric acid. Further, the mass ratio of stearic acid to palmitic acid is 1:1.1-1.3, and the ratio of the total mass of stearic acid and palmitic acid, the mass of myristic acid, and the mass of lauric acid is 1:1.5-3.0:0.3-0.8.

[0026] In some embodiments of the present invention, the fatty acids comprise stearic acid, palmitic acid, myristic acid, and lauric acid; wherein, by mass percentage, the total mass of stearic acid and palmitic acid in the soap-based facial cleanser composition accounts for 6%-10%, the mass of myristic acid accounts for 15%-22%, and the mass of lauric acid accounts for 2%-6%.

[0027] In this invention, stearic acid and palmitic acid can be derived from the same compounded raw materials and are commercially available.

[0028] In some embodiments of the present invention, the emulsifier is one or more selected from glyceryl stearate, glyceryl stearate SE, sorbitan olive oil ester, PEG-100 stearate, and PEG-40 stearate.

[0029] In some embodiments of the present invention, the emulsifier accounts for 0.5%-5.0% of the soap-based facial cleanser composition by weight percentage.

[0030] According to some specific aspects of the present invention, the emulsifier is composed of glycerol stearate and PEG-100 stearate, and further, the mass ratio of the glycerol stearate to the PEG-100 stearate is 1:0.5-2.

[0031] In some embodiments of the present invention, the polyol accounts for 10%-35% of the soap-based facial cleansing composition by weight percentage.

[0032] Furthermore, the polyols primarily function as solvents and humectants, and mainly include glycerin, propylene glycol, butylene glycol, methyl propylene glycol, polyethylene glycol-8, and polyethylene glycol-32. Polyols have a multi-hydroxyl structure, which can disperse aggregated soap shavings during saponification, acting as a solvent. They absorb moisture from the air to prevent skin moisture loss, thereby achieving a moisturizing effect. The polyols added in this invention are a compound composition of one or more polyols.

[0033] In some embodiments of the present invention, the aqueous phase component further comprises one or more of a chelating agent, a preservative, and a non-soap-based surfactant.

[0034] Furthermore, chelating agents are used to deactivate metal ions in a formulation. Once metal ions are mixed into cosmetics, they can become a direct or indirect cause of product quality deterioration. Metal ions can promote discoloration and off-flavors of raw materials, hinder the action of other ingredients, or cause precipitation in transparent systems such as toners. The chelating agent added in this invention can be disodium EDTA or tetrasodium EDTA, etc.

[0035] Furthermore, the non-soap-based surfactant includes one or more combinations of amino acid-type surfactants, betaine-type surfactants, and alkyl glycoside-type surfactants; it can maintain the stability and density of foam when the product is used in the system.

[0036] In some embodiments of the present invention, the soap-based facial cleansing composition further comprises active ingredients and / or fragrances.

[0037] In some embodiments of the present invention, the soap-based facial cleansing composition contains, by weight percentage, 0.05%-0.1% chelating agent, 0-1.0% preservative, 0-10% non-soap-based surfactant, 0-5% active ingredient, and 0-0.5% fragrance.

[0038] In some embodiments of the present invention, the non-soap-based surfactant includes sodium methyl cocoyl taurate, and further, the amount of sodium methyl cocoyl taurate added accounts for 1%-6% of the soap-based facial cleanser composition.

[0039] In this invention, the total amount of water in the soap-based facial cleanser composition is adjusted to 100%.

[0040] Another technical solution provided by the present invention: a method for preparing the above-mentioned soap-based facial cleanser composition, the preparation method comprising: The raw materials for the oil phase component are mixed and dispersed under heating conditions to obtain the oil phase; The raw materials for the aqueous phase component are mixed and dispersed under heating conditions to obtain the aqueous phase; The aqueous phase is added to the oil phase to carry out the saponification reaction. After saponification is completed, the foam is removed and the temperature is lowered.

[0041] In some embodiments of the present invention, when preparing the oil phase, the heating conditions are controlled to heat the temperature to 70-75°C.

[0042] In some embodiments of the present invention, when preparing the aqueous phase, the heating conditions are controlled to heat the temperature to 75-80°C.

[0043] In some embodiments of the present invention, the saponification reaction is controlled to be carried out at 75-80°C.

[0044] Furthermore, in some embodiments of the present invention, the method for preparing the soap-based facial cleansing composition includes: After the oil phase component is completely dissolved in the oil pot at 70-75℃, it is added to the vacuum emulsifying pot and stirred to disperse evenly. After the water phase component is completely dissolved in the water pot at 75-80℃, it is slowly added to the vacuum emulsifying pot and saponified at 75-80℃. After saponification is completed, the temperature is slowly lowered to 45℃ while defoaming. Selective active ingredients and fragrances are added to the vacuum emulsifying pot and stirred evenly. After cooling to 30-33℃, the mixture is filtered out.

[0045] Another technical solution provided by the present invention: the application of the above-described soap-based facial cleansing composition in the preparation of soap-based facial cleansing products, wherein the soap-based facial cleansing products include soap-based facial wash.

[0046] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: Addressing the shortcomings in the preparation and use of existing soap-based facial cleansers, the inventors of this invention unexpectedly discovered during extensive experimental research that adding a combination of white beeswax, hydroxystearic acid, and glyceryl hydroxystearate to the soap base system not only solves the problem of soap clumping and difficulty in dispersion during saponification, enabling smooth and efficient large-scale saponification reactions, but also increases the curing temperature to over 50°C, significantly improving the high-temperature stability of soap-based facial cleansers and successfully resolving the issue of soap-based facial cleansers turning into water at high temperatures. Long-term stability studies revealed excellent stability at all temperatures, with no issues such as "watering" or a rough paste consistency observed. Attached Figure Description

[0047] Figure 1 These are photographs of the soap-based facial cleansing compositions obtained in Examples 1-3 and Comparative Examples 1-7 of the present invention before being cooled back to room temperature after a high-temperature test at 50°C. Figure 2 The images show the soap-based facial cleansing compositions obtained in Comparative Examples 2 and 5 of this invention after being cooled back to room temperature following a high-temperature test at 50°C. Figure 3 This is a photograph of the soap-based facial cleanser composition obtained in Comparative Example 7 of the present invention after being cooled back to room temperature (i.e., after a high-temperature test at 50°C). Figure 4 These are photos of the texture of the soap-based facial cleanser composition obtained in Example 1 of this invention after being tested at different temperatures for 6 months. Figure 5 The images show the texture of the soap-based facial cleanser composition obtained in Comparative Example 1 of this invention after 6 months of testing at different temperatures. Figure 6 These are photographs of the texture of the soap-based facial cleanser composition obtained in Comparative Example 4 of the present invention after being tested at different temperatures for 6 months. Figure 7 These are photographs of the texture of the soap-based facial cleanser composition obtained in Comparative Example 6 of this invention after being tested at different temperatures for 6 months. Detailed Implementation

[0048] The above-mentioned solution will be further described below with reference to specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited to the scope of the following embodiments; the implementation conditions used in the embodiments can be further adjusted according to specific requirements, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0049] Unless otherwise specified in the following examples, all raw materials are commercially available or prepared by conventional methods in the art.

[0050] Stearic acid / palmitic acid, purchased from MOD MATERIALS CO., LTD, brand name MGREDI™ WAX-P2, with a stearic acid to palmitic acid mass ratio of 45:55; myristic acid, purchased from IOI ACIDCHEM SDN BHD, brand name Palmac 98-14; lauric acid, purchased from IOI ACIDCHEM SDN BHD, brand name Palmac 98-12; PEG-100 stearate, purchased from Shanghai Changyun Industrial Co., Ltd., brand name SY EMU-A1118; white beeswax, purchased from Suzhou Yushiji Biotechnology Co., Ltd., brand name refined beeswax-HWP; hydroxystearic acid and glyceryl hydroxystearate are from the same compound raw material, such as hydroxystearic acid / glyceryl hydroxystearate purchased from Shanghai Changyun Industrial Co., Ltd., brand name SOAP BASE, with a hydroxystearic acid to glyceryl hydroxystearate mass ratio of 1:4; polyethylene glycol-32, purchased from DONGNAM CHEMICAL. CO.,LTD, brand name MONOPOLPEG400; sodium methyl cocoyl taurate, purchased from Shanghai Changyun Industrial Co., Ltd., brand name SY SAA-M454; acrylic (ester) copolymer, purchased from LUBRIZOL, brand name Carbopol® Aqua SF-1 Polymer. Example 1

[0051] This example provides a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 1.

[0052]

[0053] The preparation method of this soap-based facial cleanser composition includes: According to the above formula, stearic acid, palmitic acid, myristic acid, lauric acid, glyceryl stearate, PEG-100 stearate, white beeswax, hydroxystearic acid, and glyceryl hydroxystearate are heated to 70-75℃ in an oil pan and completely dissolved. Then, they are added to a vacuum emulsifying pot and stirred to disperse evenly. In a water pan, water, disodium EDTA, polyethylene glycol-8, glycerin, potassium hydroxide, and sodium methyl cocoyl taurate are heated to 75-80℃ and completely dissolved. Then, they are slowly added to a vacuum emulsifying pot and saponified at 75-80℃ for 40 minutes. After saponification, the mixture is defoamed and slowly stirred to cool down until it reaches 30℃ before being removed from the pot to obtain a soap-based facial cleanser composition. Example 2

[0054] This example provides a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 2.

[0055]

[0056] The preparation method of this soap-based facial cleanser composition is the same as in Example 1. Example 3

[0057] This example provides a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 3.

[0058] The preparation method of this soap-based facial cleanser composition is the same as in Example 1. Comparative Examples 1-4

[0059] These examples provide a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 4.

[0060]

[0061] The preparation methods for these soap-based facial cleansing compositions are the same as in Example 1. Comparative Example 5

[0062] This example provides a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 5.

[0063]

[0064] The preparation method of this soap-based facial cleanser composition includes: According to the above formula, stearic acid, palmitic acid, myristic acid, lauric acid, glyceryl stearate, and PEG-100 stearate are heated to 70-75℃ in an oil pan and completely dissolved. Then, they are added to a vacuum emulsifying pot and stirred to disperse evenly. In a water pan, water, disodium EDTA, polyethylene glycol-8, glycerin, potassium hydroxide, and sodium methyl cocoyl taurate are heated to 75-80℃ and completely dissolved. Then, they are slowly added to the vacuum emulsifying pot and saponified at 75-80℃ for 40 minutes. After saponification, the temperature is slowly lowered to 45℃ while defoaming. Then, acrylic (ester) copolymers are added, stirred evenly, and cooled to 30℃ before being removed from the pot to obtain a soap-based facial cleanser composition. Comparative Examples 6-7

[0065] These examples provide a soap-based facial cleanser composition and its preparation method. The formulation of the soap-based facial cleanser composition is shown in Table 6.

[0066]

[0067] The preparation method of this soap-based facial cleanser composition is the same as in Example 1. Performance testing

[0068] (1) Test Example 1: 50℃ high temperature test and curdling point test The soap-based facial cleansing compositions prepared in Examples 1-3 and Comparative Examples 1-7 were subjected to a high-temperature test at 50°C. The specific test method was as follows: 100g of each sample from Examples 1-3 and Comparative Examples 1-7 were placed in transparent glass bottles and placed in a 50°C constant temperature incubator for 2 weeks. The appearance and texture of the samples before and after rewarming were then visually evaluated, and the temperature at which the soap solution began to solidify into a paste (the solidification point) was measured using a thermometer. The results are shown in Table 7 below. Figure 1 , Figure 2 , Figure 3 As shown:

[0069] From Table 7 and Figure 1 It can be seen that in Example 1, Comparative Examples 4 and 7, after being placed in a 50°C constant temperature chamber for two weeks and before cooling, the soap had completely solidified, with solidification points all above 50°C. However, the solidification point of Comparative Example 4 was too high, at 70-75°C. The soap began to solidify immediately upon saponification at 75-80°C, which could very likely lead to incomplete saponification. Furthermore, the resulting soap lumps solidified rapidly, making stirring difficult during production until it became impossible to continue, thus hindering large-scale production. Figure 3 It can be seen that although Comparative Example 7 was completely solidified before cooling, a large number of translucent particles were precipitated after cooling.

[0070] From Table 7 and Figure 1It can be seen that Comparative Example 1 and Comparative Example 3 did not solidify before being taken out and cooled after being placed in a constant temperature chamber at 50℃ for 2 weeks. They were completely melted into a single soap liquid with no viscosity. Their solidification point was below 45℃. Moreover, Comparative Example 3 had very low hardness after cooling and was in the form of a flowing emulsion.

[0071] From Table 7 and Figure 1 It can be seen that Comparative Examples 2 and 5, after being placed in a 50℃ constant temperature chamber for 2 weeks and then removed before cooling, did not solidify into a paste, but completely melted into a non-viscosity soap solution with separate layers. Their solidification point was below 45℃. Figure 2 It can be seen that Comparative Example 2, after cooling, has an unevenly distributed paste-like texture, while Comparative Example 5, after cooling, still has two layers, with the upper layer being paste-like and the lower layer being transparent gel-like.

[0072] From Table 7 and Figure 1 It can be seen that Comparative Example 6, after being placed in a constant temperature chamber at 50℃ for 2 weeks, did not completely solidify before being taken out and cooled, but it was not completely melted and remained in a viscous state. Compared with Comparative Example 1 and Comparative Example 3, it showed a significant improvement, indicating that its solidification point was higher than that of Comparative Example 1 and Comparative Example 3. The solidification point was measured to be between 45-50℃.

[0073] (2) Test Example 2: Long-term stability test Long-term stability tests were conducted on the soap-based facial cleansing compositions prepared in Example 1 (which performed well in Test Example 1) and Comparative Examples 1, 4, and 6 (which were relatively acceptable). The specific test method was as follows: 100g of samples from each of Example 1, Comparative Examples 1, 4, and 6 were placed in transparent glass bottles and placed in constant temperature incubators at 50℃, 45℃, 25℃, and -18℃ respectively for long-term (6 months) testing. The appearance and texture of the samples after thawing were then visually evaluated. The results are shown in Table 8 below. Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0074] From Table 8 and Figure 4 As can be seen, the texture of the sample in Example 1 remained smooth after 6 months at all temperatures, without any roughness, particle formation, or water seepage, demonstrating excellent long-term stability.

[0075] From Table 8 and Figure 5 It can be seen that Comparative Example 1 precipitated a large number of solid particles at both 50℃ and 45℃, and water was released at 45℃.

[0076] From Table 8 and Figure 6 It can be seen that Comparative Example 4 precipitated a large number of solid particles at both 50℃ and 45℃.

[0077] From Table 8 and Figure 7It can be seen that Comparative Example 6 precipitated a large number of solid particles and produced water at 50℃.

[0078] Therefore, the soap-based facial cleanser composition system of the present invention can maintain stable texture at various temperatures. The multi-dimensional stabilization system formed by white beeswax-glyceryl hydroxystearate-hydroxystearic acid raises the curing temperature to approximately 50-55°C, ensuring complete curing at high temperatures while maintaining the feasibility of mass production. The composition of the present invention tightly binds the components of this complex soap-based facial cleanser system together, enabling the product to maintain excellent stability even under harsh conditions lasting up to 6 months.

[0079] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0080] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A soap-based facial cleansing composition, characterized in that, The soap-based facial cleanser composition comprises an oil phase component and an aqueous phase component. The oil phase component comprises fatty acids, emulsifiers, beeswax, hydroxystearic acid, and glyceryl hydroxystearate. The aqueous phase component comprises polyols, alkali, and water. In the soap-based facial cleansing composition, the total amount of white beeswax, hydroxystearic acid and glyceryl hydroxystearate accounts for 1%-10% by mass percentage, and the mass ratio of white beeswax, hydroxystearic acid and glyceryl hydroxystearate is 5-30:1:1.5-6.

2. The soap-based facial cleanser composition according to claim 1, characterized in that, In the soap-based facial cleanser composition, the total amount of white beeswax, hydroxystearic acid and glyceryl hydroxystearate is 3%-8.5% by weight; and / or, the weight ratio of white beeswax, hydroxystearic acid and glyceryl hydroxystearate is 7.5-25∶1∶2-6.

3. The soap-based facial cleanser composition according to claim 1, characterized in that, The white beeswax has an acid value of 17-24 mgKOH / g; and / or, the ratio of the total mass of the white beeswax, the hydroxystearic acid and the glyceryl hydroxystearate to the mass of the fatty acid is 1:2-10, more specifically 1:3-8.

4. The soap-based facial cleansing composition according to any one of claims 1-3, characterized in that, In the soap-based facial cleansing composition, by weight percentage, the white beeswax accounts for 2%-6%, the hydroxystearic acid accounts for 0.1%-1%, and the glyceryl hydroxystearate accounts for 0.5%-3%. Furthermore, by weight percentage, the white beeswax accounts for 3%-5% of the soap-based facial cleanser composition, the hydroxystearic acid accounts for 0.1%-0.8% of the composition, and the glyceryl hydroxystearate accounts for 0.6%-2.0% of the composition.

5. The soap-based facial cleanser composition according to claim 1, characterized in that, The mass ratio of the fatty acid to the alkali is 3-8:1, more specifically 4-6.5:1; and / or, the fatty acid comprises one or more combinations selected from stearic acid, palmitic acid, myristic acid, and lauric acid; and / or, the alkali is one or more combinations selected from sodium hydroxide, potassium hydroxide, and tromethamine.

6. The soap-based facial cleanser composition according to claim 1, characterized in that, In the soap-based facial cleanser composition, the fatty acid accounts for 20%-38% by weight; and / or, in the soap-based facial cleanser composition, the alkali accounts for 5%-7% by weight; and / or, the fatty acid is composed of stearic acid, palmitic acid, myristic acid, and lauric acid. Further, the mass ratio of stearic acid to palmitic acid is 1:1.1-1.3, and the mass ratio of the total mass of stearic acid and palmitic acid, the mass of myristic acid, and the mass of lauric acid is 1:1.5-3.0:0.3-0.

8.

7. The soap-based facial cleanser composition according to claim 1, characterized in that, The fatty acids comprise stearic acid, palmitic acid, myristic acid, and lauric acid; wherein, by weight percentage, the total weight of stearic acid and palmitic acid in the soap-based facial cleanser composition is 6%-10%, the weight of myristic acid is 15%-22%, and the weight of lauric acid is 2%-6%; and / or, the emulsifier is one or more selected from glyceryl stearate, glyceryl stearate SE, sorbitan olive oil ester, PEG-100 stearate, and PEG-40 stearate; and / or, by weight percentage, the emulsifier in the soap-based facial cleanser composition comprises 0.5%-5.0%.

8. The soap-based facial cleanser composition according to claim 1, characterized in that, The aqueous phase component also includes one or more of the following: chelating agents, preservatives, and non-soap-based surfactants; And / or, the emulsifier is composed of glyceryl stearate and PEG-100 stearate, further wherein the mass ratio of the glyceryl stearate to the PEG-100 stearate is 1:0.5-2; and / or, The polyol accounts for 10%-35% of the soap-based facial cleanser composition by weight percentage.

9. A method for preparing a soap-based facial cleanser composition according to any one of claims 1-8, characterized in that, The preparation method includes: The raw materials for the oil phase component are mixed and dispersed under heating conditions to obtain the oil phase; The raw materials of the aqueous phase component are mixed and dispersed under heating conditions to obtain the aqueous phase; The aqueous phase is added to the oil phase to carry out the saponification reaction. After saponification is completed, the foam is removed and the temperature is lowered.

10. The use of the soap-based facial cleansing composition according to any one of claims 1-8 in the preparation of a soap-based facial cleansing product, said soap-based facial cleanser.

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