A facial cleanser with high low-temperature stability and preparation method thereof

Abstract

The present invention relates to the field of cosmetic technology, and specifically discloses a facial cleanser with high low-temperature stability and a preparation method thereof. A facial cleanser with high low-temperature stability comprises glycerin, caprylyl glycol, phytosterol oleate, a stabilizer, a pH adjuster, a thickener, potassium cocoyl glycinate, potassium cocoate, sodium dodecylbenzene sulfonate, houttuynia cordata extract, saponaria officinalis extract, sea silt, a preservative, an essence and water. The present application obtains a facial cleanser with good low-temperature stability by selecting a special polyol and a surfactant compound, avoids the freezing phenomenon of the facial cleanser, improves the user experience of the facial cleanser, and ensures the cleaning effect and skin care effect of the facial cleanser.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics, and in particular to a facial cleanser with high low-temperature stability and a preparation method thereof. Background Art

[0002] Facial cleanser, also known as facial cleanser, is a common facial cleansing product that can remove facial oil, dirt, makeup residue, etc. As people's living standards improve, the demand for cosmetics is getting higher and higher, and the demand for facial cleansers is also increasing.

[0003] my country has a vast territory, and the climate between the north and the south is quite different. Especially in the cold northern region, the temperature is low in winter. Under low temperature environment, the internal components of facial cleansers are prone to physical or chemical changes, etc., and the facial cleansers freeze. This will cause the facial cleansers to thaw before using them every time, which seriously affects the user experience of the facial cleansers. In addition, the quality of the facial cleansers will be affected during the continuous freezing and thawing process, which may accelerate the deterioration of the facial cleansers and affect the cleaning effect or other effects of the facial cleansers. Therefore, it is of great significance to study a facial cleanser with high low-temperature stability. Summary of the invention

[0004] In order to improve the low-temperature stability of a facial cleanser, the present application provides a facial cleanser with high low-temperature stability and a preparation method thereof. The present application obtains a facial cleanser with good low-temperature stability by selecting a special polyol and a surfactant compound, thereby avoiding the freezing phenomenon of the facial cleanser, improving the user experience of the facial cleanser, and ensuring the cleaning effect and other effects of the facial cleanser.

[0005] In the first aspect, the present application provides a facial cleanser with high low temperature stability using the following technical solution:

[0006] A facial cleanser with high low-temperature stability comprises, by mass percentage of the facial cleanser, 5% to 15% glycerol, 0.2% to 0.5% caprylyl glycol, 0.1% to 0.3% phytosteryl oleate, 0.2% to 0.5% stabilizer, 0.1% to 0.5% pH regulator, 1% to 2% thickener, 10% to 15% potassium cocoyl glycinate, 5% to 10% potassium cocoate, 2% to 4% sodium dodecylbenzene sulfonate, 1% to 2% houttuynia cordata extract, 1% to 2% soapwort extract, 2% to 3% sea silt, 0.1% to 0.5% preservative, 0.1% to 0.2% essence, and the remainder water.

[0007] In the above technical scheme, the present application selects potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate as surfactants of the facial cleanser, and further adds caprylyl glycol to the formula of the facial cleanser. Caprylyl glycol and these surfactants have a good synergistic effect, which can significantly reduce the freezing point of the facial cleanser and improve the low-temperature stability of the facial cleanser.

[0008] The Houttuynia cordata extract further added in the present application has good antibacterial and anti-inflammatory effects on the skin, can effectively improve skin conditions, and enhance the use effect of facial cleansers; soapwort extract is rich in natural surfactants, which can further enhance the cleaning ability of facial cleansers; sea silt is rich in minerals and trace elements, which helps nourish and care for the skin.

[0009] The present application found in the research that adding Houttuynia cordata extract, Soapwort extract and sea silt to facial cleanser can further enhance the cleansing and oil-control effect of the facial cleanser. It can not only significantly remove excess facial oil, but also promote the skin's absorption of moisturizing ingredients such as glycerin and caprylyl glycol, effectively lock in moisture in the skin, and reduce the tightness of the skin after cleansing, but also further synergistically enhance the facial cleanser's ability to dissolve facial makeup and oil in pores, achieving an all-in-one cleansing and removing effect, providing consumers with a better user experience.

[0010] Preferably, the mass ratio of the Houttuynia cordata extract, the Soapwort extract and the sea silt is 1.2:1.5:2.5.

[0011] In the above technical scheme, the present application can further enhance the cleaning effect and skin care effect of the facial cleanser by further defining the optimal dosage ratio of Houttuynia cordata extract, Soapwort extract and sea silt.

[0012] Preferably, the facial cleanser further comprises, in percentage by mass of the facial cleanser, 0.5% to 1% kale leaf extract, 0.5% to 1% marigold flower extract, and 0.5% to 1% kelp sugar extract.

[0013] In the above technical scheme, kale leaf extract has antioxidant and anti-aging effects on the skin, can effectively resist free radical damage during skin aging and maintain the youthful state of the skin; marigold flower extract is rich in vitamin C and minerals, has whitening and anti-inflammatory effects, helps to improve uneven skin tone and reduce skin inflammatory reactions; sugar kelp extract is rich in ingredients such as alginate, has moisturizing and keratin softening effects, and can make the skin smooth and soft.

[0014] The present application further adds kale leaf extract, marigold flower extract and kelp sugar extract to the facial cleanser. The three can replenish sufficient moisture to the face. Long-term use can improve the facial moisture-locking ability and achieve a skin care effect of facial water-oil balance. On this basis, it is further used in combination with houttuynia cordata extract, soapwort extract and sea silt to significantly improve facial oil secretion. Long-term use can significantly shrink facial pores, control oil residue in the pores, and reduce the number of facial blackheads.

[0015] Preferably, the mass ratio of the kale leaf extract, the marigold flower extract and the Laminaria saccharina extract is 0.8:0.8:0.5.

[0016] In the above technical scheme, the present application further defines the optimal dosage ratio of kale leaf extract, marigold flower extract and kelp extract, thereby achieving a good skin care effect of the facial cleanser in a low temperature environment.

[0017] Preferably, the thickener is an acrylic acid (ester) copolymer.

[0018] In the above technical solution, the present application further improves the low-temperature stability of the facial cleanser by selecting acrylic acid (ester) copolymers as thickeners.

[0019] Preferably, the stabilizer is sodium chloride and the pH adjuster is citric acid.

[0020] In the above technical solution, the present application further limits the stabilizer to chlorine and the pH adjuster to citric acid, which can further reduce the freezing point of the facial cleanser and further improve the low-temperature stability of the facial cleanser.

[0021] In the second aspect, the present application provides a method for preparing a facial cleanser with high low-temperature stability using the following technical solution:

[0022] A method for preparing a facial cleanser with high low-temperature stability, characterized in that it comprises the following steps:

[0023] Step 1: Mix water, glycerin, caprylyl glycol, stabilizer, pH adjuster, potassium cocoyl glycinate, potassium cocoate, and sodium dodecylbenzene sulfonate, and then stir and heat to 80-85°C to defoam;

[0024] Step 2: Cool down to 55-60°C, add thickener and stir evenly;

[0025] Step 3: Cool down to 40℃, add the remaining ingredients, stir evenly, and you will get a facial cleanser with high low-temperature stability.

[0026] Preferably, the stirring refers to stirring at a stirring rate of 20 to 30 r / min.

[0027] In the above technical scheme, the raw materials of the facial cleanser prepared by the above technical scheme are fully mixed and have better system stability. At the same time, the preparation method provided by the present application is simple and easy, with low production cost, and is suitable for large-scale production.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The facial cleanser provided in this application can maintain the stability of its physical and chemical properties in a low-temperature environment by selecting a special compound of polyols and surfactants, thereby avoiding freezing, improving the user experience, and ensuring the cleaning effect and other effects of the facial cleanser.

[0030] 2. The facial cleanser formula in this application contains Houttuynia cordata extract, Soapwort extract and sea silt. These natural ingredients have good skin care effects. The three ingredients work synergistically to significantly regulate facial oil secretion and improve facial skin condition.

[0031] 3. The present application further adds kale leaf extract, marigold flower extract and kelp sugar extract to the facial cleanser. The three can replenish sufficient moisture to the face. Long-term use can promote the water-oil balance of the face. The present application also found in the study that the use of kale leaf extract, marigold flower extract and kelp sugar extract in combination with Houttuynia cordata extract, soapwort extract and sea silt can significantly improve facial oil secretion. Long-term use can significantly shrink facial pores, control oil residue in the pores, and reduce the number of facial blackheads.

[0032] 4. The preparation method provided by the present application is simple and easy to implement, has low production cost, and is suitable for large-scale production. The raw materials of the facial cleanser prepared by the method are fully mixed, and have better system stability.

[0033] 5. The present application also provides a method for using a facial cleanser with high low-temperature stability. When using, first soak the face with clean water, take an appropriate amount of the product on the palm of your hand, add water and rub to produce rich foam, apply it evenly on the face, gently rub in circles, avoid the area around the eyes, and then wash it off with clean water. DETAILED DESCRIPTION

[0034] In order 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.

[0035] Example 1

[0036] A facial cleanser with high low-temperature stability comprises water, glycerin, caprylyl glycol, phytosteryl oleate, a stabilizer, a pH regulator, a thickener, potassium cocoyl glycinate, potassium cocoate, sodium dodecylbenzene sulfonate, houttuynia cordata extract, soapwort extract, sea silt, a preservative and essence.

[0037] Among them, the stabilizer is sodium chloride.

[0038] The pH adjuster is citric acid.

[0039] Wherein, the thickener is an acrylic acid (ester) copolymer.

[0040] Among them, the preservative is phenoxyethanol.

[0041] Among them, Houttuynia cordata extract and Soapwort extract were purchased from Lanzhou Waterless Biotechnology Co., Ltd. using water extraction method with an extraction ratio of 10:1.

[0042] Among them, the supplier of sea mud is Ironwood Clay and the trade name is glacial sea mud.

[0043] The method for preparing a facial cleanser with high low-temperature stability comprises the following steps:

[0044] Step 1: Mix water, glycerin, caprylyl glycol, stabilizer, pH adjuster, potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate, and heat to 85°C at a stirring rate of 20 r / min, and stir for 6 minutes to defoam.

[0045] Step 2: Cool down to 60°C, add thickener, and stir at a stirring rate of 20 r / min for 4 minutes.

[0046] Step 3: Cool down to 40°C, add the remaining raw materials, and stir at a stirring rate of 20 r / min for 5 minutes to obtain a facial cleanser with high low-temperature stability.

[0047] Example 2

[0048] A facial cleanser with high low-temperature stability, which is different from Example 1 in that the amounts of various raw materials used are inconsistent.

[0049] The method for preparing a facial cleanser with high low-temperature stability comprises the following steps:

[0050] Step 1: Mix water, glycerin, caprylyl glycol, stabilizer, pH adjuster, potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate, and heat to 80°C at a stirring rate of 30 r / min, and stir for 5 minutes to defoam.

[0051] Step 2: Cool down to 55°C, add thickener, and stir at a stirring rate of 30 r / min for 3 minutes.

[0052] Step 3: Cool down to 40°C, add the remaining raw materials, and stir at a stirring rate of 30 r / min for 3 minutes to obtain a facial cleanser with high low-temperature stability.

[0053] Example 3

[0054] A facial cleanser with high low-temperature stability, which is different from Example 1 in that the amounts of various raw materials used are inconsistent.

[0055] The method for preparing a facial cleanser with high low-temperature stability comprises the following steps:

[0056] Step 1: Mix water, glycerin, caprylyl glycol, stabilizer, pH adjuster, potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate, and heat to 82°C at a stirring rate of 25 r / min, and stir for 6 minutes to defoam.

[0057] Step 2: Cool down to 58°C, add thickener, and stir at a stirring rate of 25 r / min for 3 minutes.

[0058] Step 3: Cool down to 40°C, add the remaining raw materials, and stir at a stirring rate of 25 r / min for 4 minutes to obtain a facial cleanser with high low-temperature stability.

[0059] Example 4

[0060] A facial cleanser with high low-temperature stability, which is different from Example 3 in that it also includes kale leaf extract, marigold flower extract, and kelp extract.

[0061] Among them, kale leaf extract and marigold flower extract were purchased from Lanzhou Waterless Biotechnology Co., Ltd. using water extraction method with an extraction ratio of 10:1.

[0062] Among them, the supplier of sugar kelp extract is BiotechMarine of France.

[0063] Example 5

[0064] A facial cleanser with high low-temperature stability, which is different from Example 4 in that the amounts of kale leaf extract, marigold flower extract and kelp extract are inconsistent.

[0065] Example 6

[0066] A facial cleanser with high low-temperature stability, which is different from Example 4 in that the amounts of kale leaf extract, marigold flower extract and kelp extract are inconsistent.

[0067] The amounts of raw materials used in Examples 1-6 are shown in Table 1.

[0068] Table 1:

[0069]

[0070]

[0071] Example 7

[0072] A facial cleanser with high low-temperature stability, which is different from Example 6 in that an equal amount of kale leaf extract is replaced by an Italian kale extract.

[0073] Example 8

[0074] A facial cleanser with high low-temperature stability, which is different from Example 6 in that an equal amount of marigold flower extract is replaced by anthemis nobilis flower extract.

[0075] Example 9

[0076] A facial cleanser with high low-temperature stability, which is different from Example 6 in that an equal amount of the Laminaria saccharina extract is replaced with an Laminaria cuneiformis extract.

[0077] Comparative Example 1

[0078] A facial cleanser, which is different from Example 3 in that caprylyl glycol is replaced by propylene glycol in an equal amount.

[0079] Comparative Example 2

[0080] A facial cleanser, which is different from Example 3 in that potassium cocoyl glycinate and potassium cocoate are replaced by sodium dodecylbenzene sulfonate in equal amounts.

[0081] Comparative Example 3

[0082] A facial cleanser, which is different from Example 3 in that an equal amount of sodium dodecylbenzenesulfonate is replaced by potassium cocoyl glycinate.

[0083] Comparative Example 4

[0084] A facial cleanser, which is different from Example 3 in that an equal amount of Houttuynia cordata extract is replaced by a medicinal porphyra extract.

[0085] Comparative Example 5

[0086] A facial cleanser, which is different from Example 3 in that an equal amount of soapwort extract is replaced by a soapberry fruit extract.

[0087] Comparative Example 6

[0088] A facial cleanser, which is different from Example 3 in that an equal amount of sea silt mud is replaced by volcanic mud.

[0089] Comparative Example 7

[0090] A facial cleanser, which is different from Example 6 in that equal amounts of Houttuynia cordata extract, Soapwort extract, and sea silt are replaced by water.

[0091] The facial cleansers of the above embodiments and comparative examples were subjected to the following tests:

[0092] 1. Stability test: Take the test samples and place them at 25℃, -15℃ and -18℃ for 30 days respectively, and observe the changes in the appearance of the facial cleanser. The test results are recorded in Table 2.

[0093]

[0094] Combined with the analysis of Examples 1-9, Comparative Examples 1-7 and Table 1, the stability test shows that Examples 1-9 have a low temperature stability of -18°C, while Comparative Examples 2 and 3 do not have low temperature stability of -18°C and -15°C, and Comparative Examples 1, 5 and 7 do not have a low temperature stability of -18°C. It can be seen that the present application selects potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate as surfactants for the facial cleanser, selects a polyol such as caprylyl glycol, and selects a skin conditioner such as soapwort extract. Potassium cocoyl glycinate, potassium cocoate and sodium dodecylbenzene sulfonate have a synergistic effect with each other, which can lower the freezing point of the facial cleanser and improve the low temperature stability of the facial cleanser. Further selecting to add caprylyl glycol and soapwort extract can further lower the freezing point of the facial cleanser and further improve the low temperature stability of the facial cleanser.

[0095] 2. Makeup removal effect test: Apply 0.05g of long-lasting foundation liquid on the 5cm*5cm test area on the inside of the arm. After leaving it at room temperature for 4 hours, take 0.1g of the test sample on the palm of your hand and add water to rub it to produce rich foam. Then apply it evenly to the test area on the inside of the arm. Gently rub it in circles for 30 seconds, then rinse it naturally with clean water and observe the amount of makeup residue. 5 points will be given if it is difficult to observe the makeup residue, 4 points will be given if the makeup residue ranges from 1% to 5%, 3 points will be given if the makeup residue ranges from 6% to 10%, 2 points will be given if the makeup residue ranges from 11% to 20%, 1 point will be given if the makeup residue ranges from 20% to 40%, and 0 points will be given if the makeup residue ranges from 40% to more. The test results are recorded in Table 3.

[0096] 3. Use effect detection

[0097] 160 healthy volunteers aged between 18 and 55 years old with oily skin and blackheads on their faces were selected and divided into 16 groups, 10 people in each group. The test samples were used continuously for 28 days. The following indicators were tested before and after use. The detection node before use was half an hour before the first use of the test sample (8 hours without cleansing), and the detection node after use was half an hour before the use of the test sample on the 28th day (8 hours without cleansing):

[0098] Change rate of stratum corneum moisture content: Use German CK skin moisture tester CM825 to detect the stratum corneum moisture content of the skin. The change rate of stratum corneum moisture content = [(stratum corneum moisture content value after use - stratum corneum moisture content value before use) / stratum corneum moisture content value before use] * 100%.

[0099] Grease content change rate: Use German CK skin oil tester SM815 to detect skin oil content, oil content change rate = [(oil content after use - oil content before use) / oil content before use] * 100%.

[0100] Blackhead change rate: Facial images were collected using the facial imaging system VISIA-CR, and the number of blackheads on the volunteers' faces was analyzed by the same dermatologist. Blackhead change rate = [(number of blackheads on the face after use – number of blackheads on the face before use) / number of blackheads on the face before use] * 100%.

[0101] Facial pore change rate: Facial images were collected using the facial imaging system VISIA-CR, and the same dermatologist analyzed the facial pore area ratio of the volunteers. Pore change rate = [(facial pore area after use – facial pore area before use) / facial pore area before use] * 100%.

[0102] Usage evaluation: 16-20 points: moisturizing and not tight, 11-15 points: neither moisturizing nor tight, 6-10 points: tight and moisturizing, 0-5 points: very tight and not moisturizing.

[0103] The above test results are shown in Table 3.

[0104]

[0105] Combining Examples 1-9, Comparative Examples 1-7, and Tables 2 and 3, it can be analyzed that the facial cleanser with high low-temperature stability provided by the embodiments of the present application has been tested and proved to have good stability in a low-temperature environment, no freezing phenomenon, good user experience, and excellent cleaning effect. At the same time, such a facial cleanser can also provide skin care effects such as moisturizing and locking water, balancing water and oil, removing blackheads, and improving pores, making the skin healthier.

[0106] Specifically combining the analysis of Example 3 and Comparative Examples 4-6, it can be seen that the addition of Houttuynia cordata extract, Soapwort extract and sea silt in the facial cleanser in the present application can better remove facial oil, especially residual oil in the pores, and can also promote the facial cleanser to dissolve makeup, achieving an integrated cleansing effect, and providing consumers with a better user experience.

[0107] Specifically combined with the analysis of Example 3 and Examples 4-6, it can be seen that the present application can significantly improve the facial water-locking ability by adding kale leaf extract, marigold flower extract and kelp sugar extract to the facial cleanser, and can promote the water-oil balance of the face after long-term use, thereby further controlling the facial oil secretion and improving the facial skin condition. At the same time, combined with the analysis of Example 6 and Comparative Example 7, it can be seen that the further addition of kale leaf extract, marigold flower extract and kelp sugar extract on the basis of Houttuynia cordata extract, soapwort extract and sea silt can better play the effect of maintaining the water-oil balance of the skin, shrinking facial pores, and reducing the number of facial blackheads. This is because Houttuynia cordata extract, soapwort extract and sea silt have outstanding effects in cleaning the oil in the pores, and can also promote the skin's absorption of the effective ingredients in kale leaf extract, marigold flower extract and kelp sugar extract, so that the kale leaf extract, marigold flower extract and kelp sugar extract can act more specifically on the pores, laying a solid foundation for further improving facial pores and reducing blackheads.

[0108] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A facial cleanser with high low temperature stability, characterized in that: The facial cleanser comprises, by mass percentage, 5% to 15% glycerin, 0.2% to 0.5% caprylyl glycol, 0.1% to 0.3% phytosteryl oleate, 0.2% to 0.5% stabilizer, 0.1% to 0.5% pH adjuster, 1% to 2% thickener, 10% to 15% potassium cocoyl glycinate, 5% to 10% potassium cocoate, 2% to 4% sodium dodecylbenzene sulfonate, 1% to 2% houttuynia cordata extract, 1% to 2% soapwort extract, 2% to 3% sea silt, 0.1% to 0.5% preservative, 0.1% to 0.2% flavor, and the balance water; The facial cleanser also includes 0.5% to 1% kale leaf extract, 0.5% to 1% marigold flower extract, and 0.5% to 1% kelp sugar extract; The thickener is an acrylic acid ester copolymer, the stabilizer is sodium chloride, the pH adjuster is citric acid, and the preservative is phenoxyethanol.

2. A facial cleanser with high low temperature stability according to claim 1, characterized in that: The mass ratio of the houttuynia cordata extract, the soapwort extract and the sea silt is 1.2:1.5:2.

5.

3. A facial cleanser with high low temperature stability according to claim 1, characterized in that: The mass ratio of the kale leaf extract, the marigold flower extract and the kelp extract is 0.8:0.8:0.

5.

4. A method for preparing a facial cleanser with high low temperature stability as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Mix water, glycerin, caprylyl glycol, stabilizer, pH adjuster, potassium cocoyl glycinate, potassium cocoate, and sodium dodecylbenzene sulfonate, and then stir and heat to 80-85°C to defoam. Step 2: Cool down to 55~60℃, add thickener and stir evenly; Step 3: Cool down to 40℃, add the remaining ingredients, stir evenly, and you will get a facial cleanser with high low-temperature stability.

5. The method for preparing a facial cleanser with high low-temperature stability according to claim 4, characterized in that: The stirring refers to stirring at a stirring rate of 20 to 30 r / min.

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