Moisturizing facial cleanser integrating washing and care and preparation method thereof

Abstract

The invention provides a washing and care integrated moisturizing type facial cleanser and a preparation method thereof. The washing and care integrated moisturizing type facial cleanser is prepared from the following components: a foaming agent, a surfactant, a thickening agent, a moisturizing agent, an antioxidant and water, the foaming agent is prepared from cocamidopropyl betaine, sodium cocoyl isethionate and sodium cocoyl methyl taurine taurate. The product is free of sulfate, sulfonate and traditional preservative, EWG is all green and free of acne-causing components, and the product not only has an excellent cleaning effect, but also can immediately increase the water content of skin and supplement skin lipid, has good moisturizing performance, can assist in reducing percutaneous moisture loss and repairing skin barriers, and is more suitable for sensitive skin and child skin.

Description

Technical Field

[0001] The invention belongs to the technical field of daily cosmetics, and particularly relates to a moisturizing cleanser that combines washing and care and a preparation method thereof. Background Art

[0002] Cleansing and care cosmetics are cosmetics that primarily serve a cleansing function, with surfactants being the primary cleansing ingredient. Cleansing and care products are used almost daily, and proper skin cleansing is an important foundational care routine and essential for maintaining the skin barrier. Currently, the main types of cleaning and care products on the market include hair products (shampoo, shampoo bubbles, etc.) and bath products (shower gel, bath bubbles, etc.). The formulas of cleaning and care products primarily consist of surfactants, thickeners, preservatives, chelating agents, skin conditioners (hair conditioners), fragrances, solvents, emollients, moisturizers, and more.

[0003] Cleansing products are in direct contact with the skin or hair. Therefore, the following factors need to be considered when selecting surfactants: applicability of the production process, target consumers, stability, skin permeability, safety, mildness, skin irritation and allergies caused by long-term use.

[0004] However, surfactants commonly used in skincare products on the market include sodium cocoyl isethionate, sodium lauroyl isethionate, sodium C14-16 olefin sulfonate, sodium laureth sulfate, sodium lauroyl sarcosinate, alkyl glucosides, betaine-type amphoteric surfactants, fatty acids, and PEG-150 distearate. However, these ingredients are associated with acne risk and are known to cause skin and eye irritation, making them unsuitable for children's sensitive skin.

[0005] Commonly used skin conditioners (and hair conditioners) include guar hydroxypropyltrimonium chloride, polyquaternium salts, cyclotetrasiloxane, cyclopentasiloxane, and dimethiconol. However, these ingredients may remain on the skin or scalp, causing greasy hair and clogged pores.

[0006] In order to increase the foaming performance of the product, some products will add sodium laureth sulfate and sulfonate surfactants. Although these surfactants have good foaming performance and strong cleaning power, they are somewhat irritating and have strong degreasing ability. Excessive loss of skin sebum may cause damage to the skin barrier, dry and peeling skin and other problems.

[0007] In response to the above problems, there is an urgent need to develop a sulfate-free, sulfonate-free, traditional preservative-free, EWG all-green and non-acne-causing cleansing and care product that is suitable for all skin types, including those with sensitive skin and children. Summary of the Invention

[0008] In response to the shortcomings of the prior art, the present invention provides a two-in-one cleanser and conditioner, and a method for preparing the same. To address product safety and irritation issues, this system precisely controls the combination and dosage of surfactants and adds soothing ingredients to reduce the irritation caused by the surfactants, resulting in a product that is mild and moisturizing, does not irritate the skin and eyes, and does not damage the sebum membrane, making it suitable for sensitive children's skin and scalp. In summary, the present invention aims to develop a two-in-one cleanser and conditioner that combines the multiple benefits of protecting the sebum membrane, cleansing, being gentle, and moisturizing.

[0009] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0010] In a first aspect, the present invention provides a moisturizing cleanser that combines washing and care, wherein the components of the moisturizing cleanser include a foaming agent, a surfactant, a thickener, a moisturizing agent, an antioxidant, and water;

[0011] The foaming agents include cocamidopropyl betaine, sodium cocoyl isethionate, and sodium cocoyl methyl taurate.

[0012] The present invention uses a mild foaming agent, a surfactant, and a moisturizing agent to construct a low-irritation and excellent moisturizing toiletries. The product is sulfate-free, sulfonate-free, and traditional preservative-free, and is EWG-rated green and contains no acne-causing components. It not only has an excellent cleansing effect, but also can instantly increase skin moisture content, replenish skin lipids, and has good moisturizing properties. It can help reduce transepidermal water loss and repair the skin barrier, making it more suitable for sensitive skin and children's skin.

[0013] The present invention utilizes a highly mild foaming agent combination, wherein the cocamidopropyl betaine produces a smoother, denser, and finer foam. In addition to improving the feel of the foam, it also reduces the irritation of other surfactants. The sodium cocoyl methyl taurate taurate produces rich foam and excellent foam stability, exceeding double that of sulfates. It can block TGF-β1, prolong the hair follicle production phase, prevent hair follicle cell apoptosis, and does not damage the skin barrier function, with good mildness and moisturizing properties. The sodium cocoyl isethionate produces a fine and rich foam with better mild cleaning power, does not damage proteins and liposomes, and gives the skin a silky feel. The present invention uses cocamidopropyl betaine as the main foaming agent, creating a rich and delicate foam for the product. Sodium cocoyl methyl taurate taurate and sodium cocoyl isethionate are used as auxiliary foaming agents to enhance foaming and cleaning power, and form an intelligent degreasing system, thereby better protecting the fragile sebum membrane of sensitive skin or children's skin.

[0014] Preferably, the components of the all-in-one moisturizing cleanser include, by weight, 10-30 parts of a foaming agent, 1-10 parts of a surfactant, 0.5-3 parts of a thickener, 0.5-5 parts of a moisturizing agent, 0.1-1 parts of an antioxidant, and 55-90 parts of water.

[0015] The amount of the foaming agent added to the moisturizing cleanser of the present invention can be 11 parts, 13 parts, 15 parts, 18 parts, 20 parts, 22 parts, 25 parts, 27 parts or 29 parts;

[0016] The amount of the surfactant added can be 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts or 9.5 parts, etc.;

[0017] The amount of the thickener added can be 0.8 parts, 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts or 2.8 parts, etc.;

[0018] The amount of the moisturizer added can be 0.8 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts or 4.5 parts, etc.;

[0019] The amount of the antioxidant added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts or 0.9 parts, etc.;

[0020] The amount of water added can be 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts or 90 parts, etc.

[0021] Preferably, the mass ratio of cocamidopropyl betaine, sodium cocoyl isethionate and sodium cocoyl methyl taurate is (2-6):(0.1-2):(0.1-1.5).

[0022] Wherein "2-6" can be 2.2, 2.5, 2.8, 3, 3.2, 3.5, 3.8, 4, 4.2, 4.5, 4.8, 5, 5.2, 5.5 or 5.8, etc.;

[0023] “0.1-2” can be 0.2, 0.4, 0.5, 0.7, 0.9, 1, 1.1, 1.3, 1.5, 1.7 or 1.9, etc.;

[0024] “0.1-1.5” can mean 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3 or 1.4, etc.

[0025] Preferably, the surfactant includes any one of lauryl glucoside, decyl glucoside, cocoyl glucoside, PEG-80 sorbitan laurate, sodium cocoamphoacetate, sodium lauroamphoacetate, cocoyl glutamate TEA salt, sodium cocoyl glutamate, disodium cocoyl glutamate, sodium lauroyl sarcosinate, sodium methyl cocoyl taurate, or polyquaternium-10, or a combination of at least two thereof.

[0026] Preferably, the surfactant is PEG-80 sorbitan laurate, sodium lauroamphoacetate, TEA cocoyl glutamate and polyquaternium-10.

[0027] The present invention adopts a surfactant combination with irritation reduction and conditioning functions, wherein the PEG-80 sorbitan laurate can reduce the irritation caused by other surfactants. It is used in combination with a mild surfactant to form larger micelles containing free surfactant molecules, thereby reducing irritation to the eyes and skin, making the system very irritating. In addition, it can also improve the foam texture, maintain high water content of the skin, and enhance the skin barrier function; the sodium lauroylamphoacetate is an extremely mild surfactant and an efficient foaming agent. It has excellent skin compatibility and is suitable for sensitive skin, reducing irritation to the skin; the cocoyl glutamate TEA salt has good foaming performance, low irritation, and outstanding skin affinity, conditioning and softness. The polyquaternium-10 is mild and does not irritate the eyes. It is a commonly used conditioning agent with strong film-forming properties and can form a dense protective film on the skin. In addition, it is paired with the sodium cocoyl methyl taurine taurate in the foaming agent to form a good flocculent, further enhancing the moisturizing and smooth skin feel. The combination of the three can make the system extremely mild, non-irritating to the skin and eyes, and suitable for sensitive skin.

[0028] Preferably, the mass ratio of the PEG-80 sorbitan laurate, sodium lauroamphoacetate, TEA cocoyl glutamate and polyquaternium-10 is (2-8):(0.1-1):(0.1-1):(0.05-1).

[0029] Wherein "2-8" can be 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5 or 8, etc.;

[0030] The first "0.1-1" can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.;

[0031] The second "0.1-1" can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.;

[0032] “0.05-1” can be 0.06, 0.08, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.

[0033] Preferably, the moisturizing agent includes any one or a combination of at least two of hydrolyzed sodium hyaluronate, sodium hyaluronate, panthenol, glycerin, 1,3-propylene glycol, maltitol, polyethylene glycol-150, sodium polyglutamate or xylitol.

[0034] Preferably, the moisturizing agent is panthenol, maltitol, polyethylene glycol-150, 1,3-propylene glycol and glycerin.

[0035] Preferably, the antioxidant comprises any one of p-hydroxyacetophenone, raspberry ketone or octanoylhydroxamic acid, or a combination of at least two thereof.

[0036] Preferably, the antioxidant is p-hydroxyacetophenone.

[0037] Preferably, the thickener includes any one or a combination of at least two of PEG-150 pentaerythritol tetrastearate, acrylic acid (ester) copolymer, PEG-120 methyl glucose dioleate or sodium chloride.

[0038] Preferably, the thickener is sodium chloride and PEG-150 pentaerythritol tetrastearate.

[0039] Preferably, the mass ratio of sodium chloride to PEG-150 pentaerythritol tetrastearate is 1:(1-5), for example, it can be 1:1.5, 1:2, 1:2.5, 1:3, 1:3.5, 1:4 or 1:4.5, etc.

[0040] Preferably, the components of the all-in-one moisturizing cleanser also include a skin conditioner.

[0041] Preferably, the components of the all-in-one moisturizing cleanser also include 0.1-5 parts of skin conditioner in parts by weight, for example, 0.5 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts or 4.5 parts.

[0042] Preferably, the components of the all-in-one moisturizing cleanser also include a pH regulator and / or a fragrance.

[0043] Preferably, the pH adjuster includes any one of citric acid, sodium hydroxide or sodium citrate, or a combination of at least two of them.

[0044] Preferably, the skin conditioner comprises any one or a combination of at least two of dipotassium glycyrrhizate, ectoine, inulin, gentian root extract, purslane extract, bifid yeast fermentation product filtrate, calendula extract or Centella asiatica leaf extract.

[0045] Preferably, the skin conditioning agents are dipotassium glycyrrhizate and ectoine.

[0046] As a preferred technical solution of the present invention, the dipotassium glycyrrhizate can effectively inhibit the activity of hyaluronidase, inhibit the release of histamine and the production of inflammatory factors, and has excellent emollient, anti-allergic, anti-inflammatory, and moisturizing effects, which can effectively increase the mildness of the care products. Tetrahydropyrimidine carboxylic acid can balance the skin microecology, repair the skin barrier, enhance the moisturizing effect, protect sensitive skin, relieve skin discomfort, and is suitable for children's sensitive skin.

[0047] Preferably, the mass ratio of dipotassium glycyrrhizate to ectoine is (1-6):(1-2).

[0048] Wherein "1-6" can be 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5 or 6, etc.;

[0049] “1-2” can be 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8 or 1.9, etc.

[0050] Any specific point value within the above numerical range can be selected and will not be described in detail here.

[0051] In a second aspect, the present invention provides a method for preparing the all-in-one moisturizing cleanser as described in the first aspect, the preparation method comprising:

[0052] (1) Heat water, then add surfactant, thickener, and antioxidant, and mix until homogeneous;

[0053] (2) After cooling, a foaming agent and a moisturizing agent are added, and after mixing and homogenizing, the moisturizing cleanser combining washing and care is obtained.

[0054] Preferably, the heating in step (1) is to 80-90°C, for example, 81°C, 83°C, 85°C, 87°C or 89°C.

[0055] Preferably, the temperature in step (2) is lowered to 40-50°C, for example, 41°C, 43°C, 45°C, 47°C or 49°C.

[0056] Preferably, step (2) further comprises adding any one or a combination of at least two of a skin conditioner, a pH adjuster or a fragrance.

[0057] Any specific point value within the above numerical range can be selected and will not be described in detail here.

[0058] In a third aspect, the present invention provides a use of the all-in-one moisturizing cleanser as described in the first aspect in facial cleansing.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present invention uses a mild foaming agent, a surfactant, and a moisturizing agent to construct a low-irritation and excellent moisturizing toiletries. The product is sulfate-free, sulfonate-free, and traditional preservative-free, and is EWG-rated green and contains no acne-causing components. It not only has an excellent cleansing effect, but also can instantly increase skin moisture content, replenish skin lipids, and has good moisturizing properties. It can help reduce transepidermal water loss and repair the skin barrier, making it more suitable for sensitive skin and children's skin. DETAILED DESCRIPTION

[0061] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0062] The sources of some raw materials in the examples or comparative examples of the present invention are shown in Table 1 below:

[0063] Table 1

[0064] name source Cocamidopropyl Betaine BASF (China) Co., Ltd. Sodium Cocoyl Isethionate Clariant Chemical Technology (Shanghai) Co., Ltd. Sodium Cocoyl Methyl Taurate Toho Chemical (Shanghai) Co., Ltd. PEG-80 Sorbitan Laurate Kao (Shanghai) Chemical Co., Ltd. Sodium lauroamphoacetate BASF (China) Co., Ltd. TEA Cocoyl Glutamate Changsha Puji Biotechnology Co., Ltd. Polyquaternium-10 Toho Chemical (Shanghai) Co., Ltd. Dipotassium glycyrrhizate Gansu Panzhi Pharmaceutical Co., Ltd. Tetrahydromethylpyrimidine Shandong Tiansheng Biotechnology Co., Ltd.

[0065] Examples 1-3

[0066] The embodiment provides three types of all-in-one moisturizing cleansing milks. The components of the all-in-one moisturizing cleansing milks are shown in Table 2 below:

[0067] Table 2

[0068]

[0069]

[0070] The preparation method of the moisturizing cleanser described in Example 1 is as follows:

[0071] The temperature of the emulsifying pot is 85° C., water and a surfactant are added, stirred and homogenized, and then a thickener and an antioxidant are added, mixed and homogenized, and the temperature is lowered to 45° C., a foaming agent, a pH regulator, a moisturizer and a skin conditioner are added, and mixed and homogenized to obtain the moisturizing cleanser.

[0072] Examples 2 and 3 follow the above method.

[0073] Example 4

[0074] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The moisturizing cleanser that combines cleansing and conditioning is different from that in Example 1 only in that the surfactant does not include PEG-80 sorbitan laurate, and its reduced amount is distributed among sodium lauroamphoacetate, TEA cocoyl glutamate, and polyquaternium-10 in proportion to the number of parts. The remaining components and proportions are the same as those in Example 1, and the preparation method is similar to that in Example 1.

[0075] Example 5

[0076] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The only difference between the moisturizing cleanser and Example 1 is that the surfactant does not include sodium lauroamphoacetate, and its reduced amount is distributed among PEG-80 sorbitan laurate, cocoyl glutamate TEA salt and polyquaternium-10 in proportion to the number of parts. The remaining components and proportions are the same as those in Example 1, and the preparation method is the same as that in Example 1.

[0077] Example 6

[0078] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The only difference between the moisturizing cleanser and Example 1 is that the surfactant does not include cocoyl glutamate TEA salt, and its reduced amount is distributed according to the proportion of parts to PEG-80 anhydrous sorbitan laurate, sodium lauroylamphoacetate and polyquaternium-10. The remaining components and proportions are the same as those in Example 1, and the preparation method is based on Example 1.

[0079] Example 7

[0080] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The only difference between the moisturizing cleanser and Example 1 is that the surfactant does not include polyquaternium-10, and its reduced amount is distributed according to the proportion of parts to PEG-80 sorbitan laurate, sodium lauroylamphoacetate and cocoyl glutamate TEA. The remaining components and proportions are the same as those in Example 1, and the preparation method is based on Example 1.

[0081] Example 8

[0082] This embodiment provides a moisturizing cleanser that combines washing and conditioning. The difference between the moisturizing cleanser and Example 1 is that the components do not include a skin conditioner, and the reduced amount is supplemented by water. The remaining components and proportions are consistent with those of Example 1, and the preparation method refers to Example 1.

[0083] Example 9

[0084] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The moisturizing cleanser that combines cleansing and conditioning is different from that of Example 1 only in that the skin conditioner does not include dipotassium glycyrrhizate, and the reduced amount is supplemented by ectoine. The remaining components and proportions are consistent with those of Example 1, and the preparation method is similar to that of Example 1.

[0085] Example 10

[0086] This embodiment provides a moisturizing cleanser that combines cleansing and conditioning. The moisturizing cleanser that combines cleansing and conditioning is different from that of Example 1 only in that the skin conditioner does not include ectoine, and its reduced amount is supplemented by dipotassium glycyrrhizate. The remaining components and proportions are consistent with those of Example 1, and the preparation method is similar to that of Example 1.

[0087] Comparative Example 1

[0088] This comparative example provides a moisturizing cleanser that combines washing and conditioning. The difference between the moisturizing cleanser and Example 1 is that the components do not include a moisturizer, and the reduced amount is supplemented by water. The remaining components and proportions are consistent with those of Example 1, and the preparation method refers to Example 1.

[0089] Comparative Example 2

[0090] This comparative example provides a moisturizing cleanser that combines washing and conditioning. The difference between the moisturizing cleanser and Example 1 is only that the components do not include a foaming agent, and the reduced amount is supplemented by the surfactant components in proportion to the number of parts. The remaining components and proportions are consistent with those in Example 1, and the preparation method refers to Example 1.

[0091] Comparative Example 3

[0092] This comparative example provides a moisturizing cleanser that combines cleansing and conditioning. The difference between the moisturizing cleanser and Example 1 is that the foaming agent does not include cocamidopropyl betaine, and the reduced amount is supplemented by sodium cocoyl isethionate and sodium cocoyl methyl taurate taurate in proportion to the number of parts. The remaining components and proportions are the same as those in Example 1, and the preparation method is based on Example 1.

[0093] Comparative Example 4

[0094] This comparative example provides a moisturizing cleanser that combines washing and conditioning. The difference between the moisturizing cleanser and Example 1 is that the foaming agent does not include sodium cocoyl isethionate, and the reduced amount is supplemented by cocamidopropyl betaine and sodium cocoyl methyl taurate taurate in proportion to the number of parts. The remaining components and proportions are the same as those in Example 1, and the preparation method is based on Example 1.

[0095] Comparative Example 5

[0096] This comparative example provides a moisturizing cleanser that combines cleansing and conditioning. The difference between the moisturizing cleanser and Example 1 is that the foaming agent does not include sodium cocoyl methyl taurate and taurate, and the reduced amount is supplemented by cocamidopropyl betaine and sodium cocoyl isethionate in proportion to the number of parts. The remaining components and proportions are the same as those in Example 1, and the preparation method is based on Example 1.

[0097] Test Example 1

[0098] Stability testing included high and low temperature, as well as thermal cycling tests. Samples from Examples 1-10 and Comparative Examples 1-5 were placed at -16°C, 5°C, 25°C, and 45°C for three months, and the product appearance was regularly observed for abnormalities such as turbidity and delamination. The test results are shown in Table 3.

[0099] Table 3

[0100]

[0101]

[0102] As can be seen from the data in Table 3, the facial cleanser provided by the present invention has excellent stability. As can be seen from Example 4, the absence of PEG-80 sorbitan laurate will cause changes in the micelle system, thereby causing a low-temperature jelly-like phenomenon. As can be seen from Comparative Examples 2-5, the foaming agent also affects the stability of the product. This shows that the composition and ratio of the foaming agent and surfactant will have a certain impact on the low-temperature stability. This shows that the product of the present invention can only have good stability under an appropriate and specific composition of foaming agent and surfactant.

[0103] Test Example 2

[0104] Sunscreen cleaning test:

[0105] 150 volunteers were divided into 15 groups, each with 10 participants. All 15 groups used the products of Examples 1-10 and Comparative Examples 1-5. The specific method was as follows: All volunteers cleaned the curved side of their left and right forearms and gently blotted them dry with a paper towel. Three 4cm x 4cm test areas were then marked, with at least 2cm between each area. The three test areas were numbered L1, L2, L3 and R1, R2, R3, respectively. After sitting quietly for 20 minutes, images of each test area were captured using a microscope, and the initial L*, a*, and b* values ​​of the skin were measured using a spectrophotometer.

[0106] A microscope was then used to capture images of each test area, and a spectrophotometer measured the L*, a*, and b* values ​​of the skin after applying the sunscreen.

[0107] The L1, L2, L3 and R1, R2, R3 areas were cleaned with a quantitative amount (1 mL) of the product from the application example or the product prepared from the comparative application example. Then rinse with clean water and gently dry with a paper towel. After sitting for 30 minutes, images of each test area were collected using a microscope, and the L*, a*, and b* values ​​of the skin after makeup removal and cleansing were measured with a spectrophotometer. L* represents the degree of black and white. The larger the L* value, the whiter the skin tends to be, and vice versa. a* represents the degree of red and green. The larger the a* value, the redder the skin tends to be, and vice versa. b* represents the degree of blue and yellow. The larger the b* value, the yellower the skin tends to be, and vice versa. The laboratory maintains a constant temperature and humidity, with a test temperature of 23°C to 24°C and a relative humidity of 50% to 60%.

[0108] Cleansing power calculation method: Calculate the skin color difference after applying sunscreen compared to the initial state, recorded as △E (after application); and the skin color difference after removing makeup and cleansing compared to the initial state, recorded as △E (after cleansing). △E can comprehensively reflect the three-dimensional changes in skin color. The larger the △E value, the more obvious the skin color change, and the smaller the △E value, the closer the skin color is. The cleaning power is calculated based on △E. The calculation formula is:

[0109] △E=SQRT(△L* 2 +△a* 2 +△b* 2 )

[0110] Cleaning power = (△E (after application) - △E (after cleaning) / △E (after application)) × 100%

[0111] The results are shown in Table 4:

[0112] Table 4

[0113]

[0114]

[0115] The data in Table 4 show that the product of the present invention has an excellent sunscreen removal ability. PEG-80 sorbitan laurate has a significant effect on sunscreen removal. The selection of other surfactant components also has a certain influence on the cleaning effect. In addition, cocamidopropyl betaine, sodium cocoyl isethionate, and sodium cocoyl methyl taurate have a synergistic effect in terms of cleaning effect.

[0116] Test Example 3: Moisturizing Effect Measurement

[0117] 56 healthy female volunteers aged 20 to 40 years, with no serious systemic diseases, immunodeficiency or autoimmune diseases, no allergies to cosmetics, no acute inflammation, no use of hormone drugs or immunosuppressants, no participation in other clinical trials, and no application of topical preparations were selected. They were randomly divided into 8 groups, with 7 people in each group. The samples provided in Examples 1-3, 8-10 and Comparative Example 1-2 were applied to the right arm, and the skin moisture content was tested using a skin moisture tester (Corneometer CM825) before and 60 minutes after use to evaluate the skin moisture content before and after use of the products. The specific test results are shown in Table 5 below.

[0118] Table 5

[0119]

[0120] The data in Table 5 show that the moisture content of the products prepared in Examples 1-3 is significantly increased after use compared to before use, and have good moisturizing effects. The skin moisture content is above 45% after 60 minutes of use.

[0121] It can be seen from Examples 8-10 that the lack of a skin conditioner, or the skin conditioner being a combination of dipotassium glycyrrhizate and ectoine, will affect the moisturizing effect of the product.

[0122] Test Example 4 Consumer Sensory Effect Evaluation

[0123] 150 female volunteers aged 30-35 were selected as test subjects. They were the same group of volunteers as in Test Example 2 and were randomly divided into 15 groups, with 10 people in each group. Test method: The test subjects used the products of Examples 1-10 and Comparative Examples 1-5 respectively. The test subjects used daily skin care products normally during the day and used the test products once every night for 14 consecutive days. After use, the test subjects scored the use effect using a 5-point scale: 4.5 points and above indicate very good, very satisfactory; 4-4.5 points indicate good; 3-4 points indicate moderately acceptable; and 3 points or less indicate poor, unacceptable. The scores of each group are the average of 10 people. The results are shown in Table 6.

[0124] Table 6

[0125]

[0126]

[0127] As shown in Table 6, the facial cleanser of the present invention has good foam volume, fast foaming speed, moisturizing feeling after washing, cleaning effect, rinsing property and mildness.

[0128] As can be seen from Examples 4-7, the lack of any one of PEG-80 sorbitan laurate, sodium lauroylamphoacetate, TEA cocoyl glutamate, and polyquaternium-10 will reduce the foam volume, cleaning effect, and moisturizing feel of the product. Sodium lauroylamphoacetate and TEA cocoyl glutamate will also affect the rinsing properties of the product. Polyquaternium-10 has a greater impact on the cleaning effect and moisturizing feel of the product.

[0129] It can be seen from Examples 8-10 that the addition of skin conditioners can improve the moisturizing effect of the product, and the lack of either dipotassium glycyrrhizate or ectoine has a significant impact on the moisturizing performance.

[0130] It can be seen from Comparative Examples 3-5 that the absence of any component in the foaming agent will lead to a decrease in the foam amount and foaming speed. The absence of sodium cocoyl isethionate will also lead to a significant decrease in rinseability and a certain decrease in cleaning effect.

[0131] Test Example 5

[0132] Safety evaluation:

[0133] The specific method is as follows: 35 male and female subjects aged 18-55 years with no history of allergies were selected, and each subject was trial-tested with the products prepared in Examples 1-10. A qualified patch tester was selected and a closed patch test method was used. Approximately 0.020 ml to 0.025 ml of a 1% dilution of Examples 1-10 was added to the patch tester. The patch was then applied to the flexed forearm of the subject using a special adhesive tape. The test substance was removed after 24 hours. The skin reaction was observed 30 minutes, 24 hours, and 48 hours after removal. The results were recorded according to the skin reaction grading standards in the "Safety Technical Specifications for Cosmetics" (2015 edition).

[0134] The grading standards for adverse skin reactions are shown in Table 7:

[0135] Table 7

[0136]

[0137] The results are shown in Table 8:

[0138] Table 8

[0139]

[0140] From the data in Table 8, it can be seen that no adverse reactions were observed on the skin 30 minutes, 24 hours, and 48 hours after the spot tester was removed. It can be determined that the product of the present invention and the raw materials used have no adverse reactions to the human body and are highly safe.

[0141] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate the present invention's all-in-one moisturizing cleanser and its preparation method, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent replacements for various raw materials in the present invention's products, addition of auxiliary ingredients, and selection of specific methods, etc., are all within the scope of protection and disclosure of the present invention.

[0142] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0143] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A moisturizing cleanser that combines washing and care, characterized in that: The components of the all-in-one moisturizing cleanser include a foaming agent, a surfactant, a thickener, a moisturizing agent, an antioxidant and water; The foaming agents include cocamidopropyl betaine, sodium cocoyl isethionate, and sodium cocoyl methyl taurate.

2. The moisturizing cleanser according to claim 1, characterized in that: The components of the all-in-one moisturizing cleanser include, by weight, 10-30 parts of a foaming agent, 1-10 parts of a surfactant, 0.5-3 parts of a thickener, 0.5-5 parts of a moisturizing agent, 0.1-1 parts of an antioxidant, and 55-90 parts of water.

3. The moisturizing cleanser according to claim 1 or 2, characterized in that: The mass ratio of the cocamidopropyl betaine, sodium cocoyl isethionate and sodium cocoyl methyl taurate is (2-6): (0.1-2): (0.1-1.5).

4. The moisturizing cleanser according to any one of claims 1 to 3, characterized in that: The surfactant includes any one of lauryl glucoside, decyl glucoside, cocoyl glucoside, PEG-80 sorbitan laurate, sodium cocoamphoacetate, sodium lauroamphoacetate, cocoyl glutamate TEA salt, sodium cocoyl glutamate, disodium cocoyl glutamate, sodium lauroyl sarcosinate, sodium methyl cocoyl taurate, or polyquaternium-10, or a combination of at least two thereof; Preferably, the surfactant is PEG-80 sorbitan laurate, sodium lauroamphoacetate, TEA cocoyl glutamate and polyquaternium-10.

5. The moisturizing cleanser according to any one of claims 1 to 4, characterized in that: The moisturizing agent includes any one or a combination of at least two of hydrolyzed sodium hyaluronate, sodium hyaluronate, panthenol, glycerin, 1,3-propylene glycol, maltitol, polyethylene glycol-150, sodium polyglutamate or xylitol; Preferably, the moisturizing agent is panthenol, maltitol, polyethylene glycol-150, 1,3-propylene glycol and glycerin.

6. The moisturizing cleanser according to any one of claims 1 to 5, characterized in that: The antioxidant comprises any one of p-hydroxyacetophenone, raspberry ketone or octanoylhydroxamic acid or a combination of at least two thereof; Preferably, the thickener includes any one or a combination of at least two of PEG-150 pentaerythritol tetrastearate, acrylic acid (ester) copolymer, PEG-120 methyl glucose dioleate or sodium chloride.

7. The moisturizing cleanser according to any one of claims 1 to 6, characterized in that: The components of the all-in-one moisturizing cleanser also include a skin conditioner; Preferably, the components of the all-in-one moisturizing cleanser also include 0.1-5 parts of a skin conditioner by weight; Preferably, the components of the all-in-one moisturizing cleanser also include a pH regulator and / or a fragrance.

8. The moisturizing cleanser according to claim 7, characterized in that: The skin conditioning agent includes any one or a combination of at least two of dipotassium glycyrrhizate, ectoine, inulin, gentian root extract, purslane extract, bifid yeast fermentation product filtrate, calendula extract or Centella asiatica leaf extract; Preferably, the skin conditioning agents are dipotassium glycyrrhizate and ectoine; Preferably, the mass ratio of dipotassium glycyrrhizate to ectoine is (1-6):(1-2).

9. A method for preparing a moisturizing cleanser combining washing and care as claimed in any one of claims 1 to 8, characterized in that: The preparation method comprises: (1) Heat water, then add surfactant, thickener, and antioxidant, and mix until homogeneous; (2) After cooling, a foaming agent and a moisturizing agent are added, and after mixing and homogenizing, the moisturizing cleanser combining washing and care is obtained.

10. The preparation method according to claim 9, characterized in that Step (1) heating to 80-90° C. Preferably, the temperature in step (2) is lowered to 40-50°C; Preferably, step (2) further comprises adding any one or a combination of at least two of a skin conditioner, a pH adjuster or a fragrance.

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