Soap-based facial cleanser and preparation method thereof
By combining specific fatty acids and auxiliary surfactants into soap-based cleansers and adding specific moisturizers and emulsifiers, the problem of dryness and tightness of the skin after washing the soap-based cleansers is solved, achieving better cleansing ability and skin moisturizing.
Patent Information
- Application Number
- CN202411939276.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-03-25
AI Technical Summary
Existing soap-based cleansers often cause dryness and tightness after washing, and despite the addition of moisturizing agents and antagonistic irritants, adverse symptoms cannot be completely avoided.
By combining lauric acid, myristic acid, palmitic acid and stearic acid as the main cleaning ingredients in a soap-based cleanser, and adding potassium cocoyl glycine and sodium methyl cocoyl taurate as auxiliary surfactants, combining specific moisturizers and emulsifiers, the ratio is optimized to improve cleaning ability and skin moisturizing.
It realizes the better cleaning ability of a soap-based cleanser, while effectively alleviating the dryness and tightness of the skin after washing, ensuring that the skin remains moist and comfortable.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a soap-based facial cleanser and a preparation method thereof. Background Art
[0002] There are various types of facial cleansing products on the market. They can be roughly divided into three categories according to the main cleansing ingredients in the product formula: soap-based cleansing products, amino acid-based cleansing products, and compound cleansing products, etc.; among them, soap-based cleansing products and amino acid-based cleansing products are the two most common and most consumer-recognized types of cleansing products. Among them, soap-based cleansing products are deeply favored by consumers because of their rich and delicate foam, thorough cleansing, and easy rinsing.
[0003] However, soap-based cleansers have always been the most common problem for consumers, causing dry and tight skin after washing. The strong irritation caused by the strong degreasing power of fatty acids is a problem that consumers have reported the most. In response to this problem, the existing soap-based cleansers on the market mostly use more moisturizers and functional ingredients with antagonistic irritation to reduce skin dryness and relieve tightness. However, even if moisturizers or functional ingredients with antagonistic irritation are added, the adverse symptoms caused by soap-based cleansers on the skin cannot be completely avoided.
[0004] Therefore, the above-mentioned skin feel problem of soap-based cleansers after washing affects product quality and normal sales, limits the development of industrial applications, and needs to be solved urgently. Summary of the invention
[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a soap-based cleanser and a preparation method thereof, so as to achieve better cleaning ability of the soap-based cleanser and solve the problem of dry skin and tightness after washing.
[0006] To achieve the above objectives, the technical solutions adopted by the present invention include:
[0007] In a first aspect, the present invention provides a soap-based facial cleanser, comprising the following components in parts by weight: 22.5-30.5 parts of fatty acids, 5.4-25.4 parts of moisturizers, 1.5-3.5 parts of emulsifiers and 1.5-7.5 parts of auxiliary surfactants; the fatty acids include lauric acid, myristic acid, palmitic acid and stearic acid; the auxiliary surfactants include potassium cocoyl glycinate and sodium methyl cocoyl taurate.
[0008] In the soap-based facial cleanser provided by the present invention, the fatty acids are composed of lauric acid, myristic acid, palmitic acid and stearic acid, and the four fatty acids are appropriately matched as the main cleaning ingredients, supplemented with potassium cocoyl glycinate and sodium methyl cocoyl taurate, so that the soap-based facial cleanser has denser and richer foam and better cleaning ability; and the present invention solves the problems of dry skin and tightness after washing with the soap-based facial cleanser by adding a moisturizer and an emulsifier while compounding the fatty acids with a specific surfactant within a preferred dosage range, thereby effectively avoiding the adverse symptoms caused by the soap-based facial cleanser to the skin.
[0009] Preferably, the soap-based facial cleanser comprises the following components in parts by weight: 26.5 parts of fatty acid, 15.4 parts of moisturizer, 2.5 parts of emulsifier and 4.5 parts of auxiliary surfactant.
[0010] Through experimental research, it was found that when the components are compounded using the above-mentioned optimal ratio, the components cooperate with each other to significantly enhance the cleaning ability of the soap-based cleanser, and effectively relieve the tightness caused by the soap base, keeping the skin hydrated and comfortable.
[0011] Preferably, the mass ratio of lauric acid, myristic acid, palmitic acid and stearic acid is (4-6):(7-8.5):(9-11):(2.5-4).
[0012] More preferably, the mass ratio of lauric acid, myristic acid, palmitic acid and stearic acid is 4.8:7.7:10.8:3.2.
[0013] Through experimental research, it was found that the dosage ratio of the above four components has an important influence on the foam stability, cleaning ability and skin adaptability of the prepared soap-based facial cleanser. When the dosage of the four components is compounded using the above-mentioned optimal values, the foam of the soap-based facial cleanser is rich and delicate, which can ensure strong cleaning power while providing moderate moisturizing and avoiding excessive dryness or irritation.
[0014] Preferably, the mass ratio of potassium cocoyl glycinate to sodium methyl cocoyl taurate is (0.5-3):(1-4.5).
[0015] More preferably, the mass ratio of potassium cocoyl glycinate to sodium methyl cocoyl taurate is 3:1.5.
[0016] Preferably, the emulsifier comprises glyceryl stearate and cholesterol hydroxystearate, and the mass ratio of glyceryl stearate to cholesterol hydroxystearate is (0.5-1.5):(1-2).
[0017] More preferably, the mass ratio of glyceryl stearate to cholesterol hydroxystearate is 1:1.5.
[0018] Cholesteryl hydroxystearate contains ingredients similar to intercellular lipids, has moisturizing properties, can prevent oil-water separation, and is also a hydrophilic emulsifier. Adding it to a cleanser can prevent tightness after washing; glyceryl stearate has a certain moisturizing property, helps maintain skin moisture, and can improve the texture of the cleanser, making it smoother and reducing the dry feeling after cleaning. Experimental research has found that when the two are compounded within the above preferred range, they can synergistically achieve a balance between the foam stability and skin moisturizing properties of the cleanser, so that it has both a good cleansing effect and maintains skin comfort.
[0019] Preferably, the humectant comprises β-glucan and glycerin.
[0020] Preferably, the mass ratio of β-glucan to glycerol is 0.4:(5-25).
[0021] More preferably, the mass ratio of β-glucan to glycerol is 0.4:15.
[0022] β-glucan is a natural plant gum polysaccharide, which is used as a skin conditioner and moisturizer in cosmetics. At the same time, the ingredient also has certain anti-allergic and anti-inflammatory effects. In addition, the ingredient is water-soluble, has good compatibility with most raw materials, has no allergic reaction, and can improve the skin's moisturizing ability. The present invention selects β-glucan or glycerin as a moisturizer and compounds it with specific fatty acids and other components, which can further enhance the moisturizing feeling of the soap-based cleanser and effectively solve the dry and tight feeling after washing with the soap-based cleanser.
[0023] More preferably, the soap-based facial cleanser further comprises the following components in parts by weight: 4.2-7.2 parts of a neutralizer, 0.1-1.1 parts of a buffer, 0.01-0.1 parts of a chelating agent, 0.5-1.5 parts of a film former, 0.05-0.15 parts of a thickener, 0.6-1 parts of a preservative, 0.1-0.3 parts of a fragrance, and the remainder of water.
[0024] More preferably, the soap-based facial cleanser further comprises the following components in parts by weight: 5.7 parts of a neutralizer, 0.6 parts of a buffer, 0.05 parts of a chelating agent, 1 part of a film former, 0.1 parts of a thickener, 0.8 parts of a preservative, 0.2 parts of a fragrance, and the remainder of water.
[0025] Preferably, the neutralizer includes potassium hydroxide; the buffer includes sodium dihydrogen phosphate; the chelating agent includes disodium edetate; the film-forming agent includes polyquaternium-7; the thickener includes hydroxypropyl methylcellulose; the preservative includes phenoxyethanol and / or ethylhexylglycerin; and the fragrance includes essence.
[0026] The chelating agent disodium ethylenediaminetetraacetic acid can form a stable chelate with metal ions (such as calcium, magnesium, iron, copper, etc.) in water to prevent these metal ions from reacting with other ingredients in the cleansing product, thereby maintaining the stability of the product; the film-forming agent polyquaternium-7 helps to form rich and stable foam and improve the cleaning efficiency; the thickener hydroxypropyl methylcellulose helps to increase the consistency of the material; the preservatives are phenoxyethanol and ethylhexylglycerin, which can effectively inhibit the growth of bacteria, fungi and yeast, maintain the stability of the product and extend the shelf life.
[0027] In a second aspect, the present invention also provides a method for preparing the soap-based cleanser, comprising the following steps:
[0028] S1. Mix the fatty acid and emulsifier, raise the temperature to 75-85°C, stir at a rate of 80-120r / m, stir for 10-20min until completely dissolved, then add water, neutralizer, humectant, buffer, chelating agent, maintain 75-85°C, stir at a rate of 350-450r / m, and stir for 15-25min;
[0029] S2, add film-forming agent and auxiliary surfactant, adjust the stirring speed to 250-350r / m, cool to 35-40℃, keep stirring for 20-30min until the paste turns white and pearlescent precipitates;
[0030] S3, maintaining the temperature, adding a thickener, a moisturizer, a fragrance, and a preservative, and stirring for 15-25 minutes to obtain the soap-based cleanser.
[0031] Compared with the prior art, the present invention has the following beneficial effects:
[0032] (1) In the soap-based cleanser provided by the present invention, the fatty acids are composed of lauric acid, myristic acid, palmitic acid and stearic acid, and the four fatty acids are appropriately matched as the main cleaning ingredients, supplemented with potassium cocoyl glycinate and sodium methyl cocoyl taurate, so as to achieve a more dense and rich foam and better cleaning ability of the soap-based cleanser;
[0033] (2) The present invention solves the problem of dry skin and tightness after washing with soap-based facial cleansers by compounding the fatty acid with a specific surfactant within the preferred dosage range and adding a specific moisturizer and emulsifier, thereby effectively avoiding the adverse symptoms caused by soap-based facial cleansers on the skin and achieving a balance between the foam stability and skin moisturizing properties of the facial cleanser, so that the facial cleanser has a good cleansing effect while maintaining skin comfort. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 This is a diagram showing the foaming behavior of the soap-based facial cleanser prepared in Example 1. DETAILED DESCRIPTION
[0035] To better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments. It should be understood by those skilled in the art that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0036] Unless otherwise specified, all raw materials involved in the following examples and comparative examples are commercially available general materials.
[0037] Examples 1-5
[0038] Embodiments 1-5 of the present invention provide a soap-based cleanser, and the specific formula is shown in Table 1 (total weight parts is 100 parts). The preparation method of the soap-based cleanser comprises the following steps:
[0039] S1. Add fatty acid and emulsifier into the main pot, heat to 80°C, stir at 100r / m, stir for 15min until completely dissolved, add water, neutralizer, humectant (glycerol), buffer, chelating agent (dissolve until clear and transparent, no need to heat) into the main pot, maintain 80°C, stir at 400r / m, and stir again for 20min (saponification);
[0040] S2, after adding film-forming agent and auxiliary surfactant, stirring speed 300r / m, cooling water to 38℃;
[0041] S3, keep the main pot constant temperature at 38°C, stirring speed at 300r / m, keep stirring for more than 20 minutes until the paste turns white and pearlescent precipitates;
[0042] S4, maintaining the temperature, adding a thickener, a moisturizer (β-glucan), a fragrance, and a preservative, and stirring for more than 15 minutes to obtain the soap-based cleanser.
[0043] Table 1: Formula of soap-based cleansing milk described in Examples 1-5 (parts by weight)
[0044]
[0045]
[0046] Comparative Examples 1-12
[0047] The present invention also provides the formula of soap-based facial cleansing milk of comparative examples 1-12, as shown in Table 2 (total weight parts is 100 parts). The preparation method of the soap-based facial cleansing milk provided in comparative examples 1-12 is similar to that of embodiments 1-5, except that the formula is different.
[0048] Table 2: Formula of soap-based cleansing milk described in Comparative Examples 1-12 (parts by weight)
[0049]
[0050]
[0051] Comparative Example 13
[0052] This comparative example provides a soap-based facial cleanser, which differs from Example 1 only in that potassium cocoyl glycinate is replaced by cocamidopropyl betaine, and the other components and contents are the same.
[0053] Effect example
[0054] 1. Stability test:
[0055] The soap-based cleansing milks prepared in Examples 1-5 and Comparative Examples 1-13 were used as samples to test their stability. 40 g of each sample was placed in a 100 mL transparent sterile cup, and then placed in a (48±1)°C constant temperature box and a (-8±2)°C refrigerator for 3 months, and the appearance of the sample was observed after returning to room temperature; placed in a (48±1)°C-(-8±2)°C high and low temperature alternating test box for 1 month, and the appearance of the sample was observed after returning to room temperature. The specific results are shown in Table 3.
[0056] Table 3 Soap-based cleanser stability test results
[0057]
[0058]
[0059] As shown in Table 3, the soap-based facial cleansing milk prepared in the embodiment of the present invention is normal in heat resistance, cold resistance, and hot and cold alternation tests, and has good stability. However, due to the lack of specific components in Comparative Examples 1-9, the prepared soap-based facial cleansing milk has different degrees of stratification, thinning or hardening under different test conditions, and the stability is poor, indicating that the components selected in the present invention cooperate with each other, which can effectively improve the stability of the soap-based facial cleansing milk, ensure that the product can still maintain good performance in various environments, and improve user experience.
[0060] 2. Sensory evaluation:
[0061] The soap-based facial cleansers prepared in Examples 1-5 and Comparative Examples 1-13 were used as samples, and the feelings after use were evaluated. The specific method is as follows.
[0062] (1) Subjects: 180 volunteers with healthy skin, no history of skin diseases or allergies, including 35 males and 145 females aged 20-40 years old, were selected and divided into 18 groups. Each group was given a blind sensory evaluation of the soap-based facial cleanser of the embodiment and the comparative example.
[0063] (2) Test method: After wetting the hands and face of the subject with clean water, squeeze out 2g of sample on one wet hand, spread the sample with the other hand in a quick circular motion, then rub the hands together to make bubbles, and then gently massage the face with both hands; finally, wash the hands and face with running water and let them dry naturally; the subjects evaluate the soap-based cleanser using a scoring system based on the feeling of use. The evaluation items include the fineness and richness of the cleanser's foam, the degree of foam cleaning, the degree of skin oil cleaning, and the degree to which the skin is not dry and tight after washing. The scoring standard adopts a 10-point system, with 1 point being the worst and 10 points being the best. The evaluation results are the average scores of all subjects as shown in Table 4. The higher the average score, the better the effect.
[0064] Table 4 Sensory evaluation test results
[0065]
[0066] It can be seen from the results in Table 4 that the technical solution of the present invention can achieve denser and richer foam and better oil cleaning ability of the soap-based facial cleanser, solve the problem of dry skin and tightness after washing with soap-based facial cleansers, and achieve a balance between the foam stability and skin moisturizing properties of the facial cleanser. In particular, the soap-based facial cleanser prepared in Example 1 has the best comprehensive effect.
[0067] When any one or two of lauric acid, myristic acid, palmitic acid and stearic acid in the fatty acid components are missing in Comparative Examples 1-3, the foam fineness of the soap-based cleansing milk obtained is reduced, the amount of foam is reduced, and the cleaning power for skin surface oil is significantly reduced; when potassium cocoyl glycinate and sodium methyl cocoyl taurate in the auxiliary surfactant components are missing in Comparative Examples 5-6, the foam fineness and richness of the soap-based cleansing milk obtained are reduced, the foam feels rough or simple, and the effect of removing skin surface oil is reduced, especially in Comparative Example 7. When the above two components are missing, the foaming effect and oil cleaning ability of the soap-based cleanser decrease more significantly, and the skin has a certain degree of dryness and tightness after washing, indicating that when potassium cocoyl glycinate and sodium methyl cocoyl taurate are compounded with fatty acids to prepare a soap-based cleanser, the two components cooperate with each other and play a synergistic role to effectively assist fatty acids to achieve a denser and richer foam and better oil removal ability of the cleanser, balancing the cleaning power of the product and the mildness to the skin; while in Comparative Example 4, when any component of the fatty acid and the auxiliary surfactant is missing, the overall The use effect is also significantly deteriorated, indicating that the specific fatty acids and auxiliary surfactants used in the present invention interact and cooperate with each other to synergistically enhance the bubble effect and cleaning power of the soap-based cleanser, and ensure the comfort of the cleanser after use, thereby effectively improving the user experience. Each component is indispensable; in Comparative Examples 8-9, when cholesterol hydroxystearate or glyceryl stearate in the emulsifier component is missing, the soap-based cleanser is greatly affected in terms of foam richness, cleaning degree and comfort after washing. In Comparative Example 10, when β-glucan is missing, the soap-based cleanser after use is The skin moisturizing feeling and comfort are significantly reduced. The above results show that the specific moisturizer and emulsifier described in the present invention can effectively solve the problem of dry skin and tightness after washing of soap-based facial cleansers, and achieve a balance between the foam stability and skin moisturizing properties of the facial cleanser; when the dosage ratio of each component in the fatty acid described in Comparative Examples 11-12 exceeds the preferred range of the present invention, the richness and fineness of the foam of the soap-based facial cleanser and the degree of non-drying and tightness after washing are significantly reduced, indicating that the specific fatty acid components selected in the present invention can better play a synergistic role within a limited range to effectively improve the comprehensive use effect of the soap-based facial cleanser.
[0068] Finally, it should be noted that the above embodiments are intended to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.
Claims
1. A soap-based facial cleanser, characterized in that: The soap-based facial cleanser comprises the following components in parts by weight: 22.5-30.5 parts of fatty acid, 5.4-25.4 parts of moisturizer, 1.5-3.5 parts of emulsifier and 1.5-7.5 parts of auxiliary surfactant; The fatty acids include lauric acid, myristic acid, palmitic acid and stearic acid; The auxiliary surfactants include potassium cocoyl glycinate and sodium methyl cocoyl taurate.
2. The soap-based facial cleanser according to claim 1, characterized in that The soap-based facial cleanser comprises the following components in parts by weight: 26.5 parts of fatty acid, 15.4 parts of moisturizer, 2.5 parts of emulsifier and 4.5 parts of auxiliary surfactant.
3. The soap-based facial cleanser according to claim 1, characterized in that The mass ratio of lauric acid, myristic acid, palmitic acid and stearic acid is (4-6):(7-8.5):(9-11):(2.5-4).
4. The soap-based facial cleanser according to claim 3, characterized in that: The mass ratio of lauric acid, myristic acid, palmitic acid and stearic acid is 4.8:7.7:10.8:3.
2.
5. The soap-based facial cleanser according to claim 1, characterized in that: The mass ratio of the potassium cocoyl glycinate to the sodium methyl cocoyl taurate is (0.5-3):(1-4.5).
6. The soap-based facial cleanser according to claim 1, characterized in that: The emulsifier comprises glyceryl stearate and cholesterol hydroxystearate, and the mass ratio of glyceryl stearate to cholesterol hydroxystearate is (0.5-1.5):(1-2).
7. The soap-based facial cleanser according to claim 1, characterized in that The humectants include beta-glucan and glycerin.
8. The soap-based facial cleanser according to claim 1, characterized in that: Based on 100 parts by weight, the soap-based facial cleanser also includes the following components in parts by weight: 4.2-7.2 parts of a neutralizer, 0.1-1.1 parts of a buffer, 0.01-0.1 parts of a chelating agent, 0.5-1.5 parts of a film former, 0.05-0.15 parts of a thickener, 0.6-1 parts of a preservative, 0.1-0.3 parts of a fragrance, and the remainder of water.
9. The soap-based facial cleanser according to claim 8, characterized in that The neutralizer includes potassium hydroxide; the buffer includes sodium dihydrogen phosphate; the chelating agent includes disodium edetate; the film-forming agent includes polyquaternium-7; the thickener includes hydroxypropyl methylcellulose; the preservative includes phenoxyethanol and / or ethylhexylglycerin; and the fragrance includes essence.
10. The method for preparing the soap-based facial cleanser according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Mix the fatty acid and emulsifier, raise the temperature to 75-85°C, stir at a rate of 80-120r / m, stir for 10-20min until completely dissolved, then add water, neutralizer, humectant, buffer, chelating agent, maintain 75-85°C, stir at a rate of 350-450r / m, and stir for 15-25min; S2, add film-forming agent and auxiliary surfactant, adjust the stirring speed to 250-350r / m, cool to 35-40℃, keep stirring for 20-30min until the paste turns white and pearlescent precipitates; S3, maintaining the temperature, adding a thickener, a moisturizer, a fragrance, and a preservative, and stirring for 15-25 minutes to obtain the soap-based cleanser.