A cleaning essence for suspending grease and preparation method thereof

Abstract

The present invention relates to the field of cosmetics, and in particular to a cleansing essence for suspending grease and a preparation method thereof. The cleansing essence for suspending grease is characterized in that, in terms of mass percentage, the components include: 4.2-40% amino acid surfactant, 0.5-40% grease, 1.5-7% thickener, 0.01-0.5% pH regulator, and residual water. The cleansing essence of the present invention has a suspending grease effect, and the grease is stably present in the system in a beaded form in the obtained product. And using amino acid surfactants such as sodium cocoylaminopropionate, potassium cocoyl glycinate, and sodium cocoyl glycinate, the essence has higher foaming and cleaning effects, uses active ingredients such as grease, does not stimulate after use, and has a good moisturizing effect.

Description

Technical Field

[0001] The present invention relates to the field of cosmetics, and in particular to a cleansing essence for suspending oil and a preparation method thereof. Background Art

[0002] Cleansing products often contain high levels of surfactants or emulsifiers, which have a strong solubilizing effect on oils. When commonly used cosmetic oils are added to conventional formulas or preparation systems, the oils are directly emulsified, resulting in a product with a uniform appearance. This fails to achieve the effect of suspending the oil and presenting stable oil droplets.

[0003] Currently, cleaning products that prepare suspended oil droplets often first create oil droplets with a certain hardness, and then use a thickener to suspend the oil droplets in the system. However, during storage, the product suffers from a formula defect in which the oil droplets dissolve and become unstable. In addition, this type of preparation process is cumbersome, and the prepared oil droplets have a sticky feel on the skin due to their certain hardness, resulting in a poor user experience.

[0004] Therefore, providing a cleansing essence that can achieve the stable existence of oil droplets in a high-content surfactant system, and has good foaming power and cleaning effect, and does not cause tightness and irritation after cleaning, is a technical problem that needs to be solved at present. Summary of the Invention

[0005] In view of the above technical problems, the present invention proposes a technical solution of the present invention, which includes a cleansing essence for suspending oil and a preparation method thereof.

[0006] During the preparation of the cleansing essence of the present invention, the oil is added and can be stably formed into oil droplets in the essence system with a high surfactant content. The specific surfactant selected in the present invention also enables the essence to have good foaming and cleansing power. The present invention also uses oils such as meadowfoam seed oil, which can prevent skin irritation after use and has a good moisturizing effect.

[0007] In one aspect, the present invention provides a grease-suspending cleansing essence, which comprises, by mass percentage, 4.2-40% of an amino acid surfactant, 0.5-40% of grease, 1.5-7% of a thickener, 0.01-0.5% of a pH regulator, and the remainder of water.

[0008] Furthermore, the amino acid surfactant includes: 4-30% sodium cocoylaminopropionate, 0.1-5% potassium cocoyl glycinate and 0.1-5% sodium cocoyl glycinate, and the amount refers to the proportion in the cleansing essence.

[0009] Furthermore, the amount of sodium cocoamidopropionate in the cleansing essence is 4.5-30%, 5-25%, 5.5-20% or 5.8-20%.

[0010] Furthermore, the amount of potassium cocoyl glycinate in the cleansing essence is 0.15-4.5%, 0.5-4.5%, 1-4.2% or 1.2-4%.

[0011] Furthermore, the amount of sodium cocoyl glycinate in the cleansing essence is 0.15-4.5%, 0.5-4.5%, 1-4.2% or 1.2-4%.

[0012] Furthermore, the mass ratio of the amino acid surfactant to the oil is not less than 1:1, 1.2:1, 1.4:1 or 1.5:1.

[0013] Furthermore, the mass ratio of the amino acid surfactant to the oil is not higher than 3.5:1, 3.3:1, 3.2:1 or 3:1.

[0014] Furthermore, the oil comprises vegetable oil and / or synthetic oil. The amount of the oil can also be 0.6-30%, 0.8-25%, 1-20%, 1.5-15% or 2-12%.

[0015] Furthermore, the oil includes at least one of meadowfoam seed oil, jojoba seed oil, macadamia seed oil, milk thistle seed oil, squalane, pentaerythritol tetraisostearate, polydimethylsiloxane, camellia seed oil, avocado oil, grape seed oil, and caprylic / capric triglyceride.

[0016] Furthermore, the oil includes meadowfoam seed oil.

[0017] Furthermore, the thickener comprises at least one of acrylic acid (ester) copolymer, cocamide MEA, and PEG-150 distearate. The amount of the thickener can also be 2-6.8%, 2.5-6.5%, or 2.8-6%.

[0018] Furthermore, the pH regulator includes at least one of arginine, sodium hydroxide, and potassium hydroxide. The pH regulator can also be used in an amount of 0.05-0.45%, 0.1-0.4%, or 0.15-0.3%.

[0019] Furthermore, the cleansing essence further comprises 2-10%, 2.5-9.5%, 3-9% or 3.5-8.5% of a moisturizing agent, wherein the moisturizing agent comprises at least one of propylene glycol, glycerol, ethylene glycol, dextran, butylene glycol and hyaluronate.

[0020] Furthermore, the cleaning essence further comprises at least two of a foam stabilizer, a chelating agent, and a preservative.

[0021] Furthermore, the foam stabilizer includes polyethylene glycol, such as polyethylene glycol-14M (PEG-14M), and its usage amount can be 0.5-2.5%, 0.7-2.2% or 0.8-2%.

[0022] Furthermore, the chelating agent includes citrate or EDTA and its salts, and the dosage thereof can be 0.01-0.5%, 0.1-0.5% or 0.15-0.45%.

[0023] Furthermore, the preservative includes at least one of benzoate, phenoxyethanol, and methyl paraben, and the amount thereof can be 0.02-0.4%, 0.05-0.38%, or 0.1-0.35%.

[0024] Furthermore, the cleansing essence further comprises 1-3.5% of plant active ingredients, such as at least one of licorice extract, aloe extract, rhodiola rosea extract, pansy extract, coix seed extract, purslane extract, oat extract, and kava extract.

[0025] Furthermore, the plant active ingredients used in the cleansing essence include 0.02-1.2% aloe vera extract, 0.05-1.2% pansy extract and 0.04-1% kava extract.

[0026] Furthermore, the cleansing essence for suspending oil includes, by mass percentage, 4-30% of sodium cocoylaminopropionate, 0.1-5% of potassium cocoyl glycinate and 0.1-5% of sodium cocoyl glycinate, 1-20% of meadowfoam seed oil, 1.5-7% of thickener, 2-10% of moisturizer, 0.5-2.5% of foam stabilizer, 0.01-0.5% of chelating agent, 0.02-0.4% of preservative, 0.01-0.5% of pH adjuster and the balance of water.

[0027] Furthermore, the cleansing essence may further include 0.02-1.2% aloe vera extract, 0.05-1.2% pansy extract and 0.04-1% kava extract.

[0028] The present invention also provides a method for preparing the cleansing essence. During the preparation process, to achieve stable oil droplets, the amino acid surfactant is first dissolved in water, followed by the addition of oil and stirring, and finally the thickener and stirring. This order of addition ensures that the raw materials present stable oil droplets. By first dissolving the surfactant, then adding the thickener and stirring, and finally adding the oil and stirring, the resulting product exhibits emulsified oil droplets, resulting in a smooth, emulsion-like cleansing essence.

[0029] The preparation method of the cleaning essence of the present invention comprises the following steps:

[0030] Step 1: Place water in a container, add amino acid surfactant, and stir to mix;

[0031] Step 2: Add the oil and stir to combine, then add the thickener and continue stirring;

[0032] Step 3: Add the remaining raw materials, stir and mix, and sterilize to obtain the cleansing essence.

[0033] Furthermore, the stirring speed in step 1 is 50-500 rpm and the time is 0.2-1 hour;

[0034] Furthermore, in step 2, the stirring speed of adding oil is 70-800 rpm, and the stirring time is 0.3-1.5 hours.

[0035] Furthermore, in step 2, the stirring speed of adding the thickener is 70-800 rpm and the time is 0.3-1.2 hours;

[0036] Furthermore, the stirring speed in step 3 is 50-500 rpm, and the stirring time is 0.2-1 hour.

[0037] On the other hand, the present invention also provides use of the cleansing essence in cleaning hair or skin.

[0038] Beneficial effects of the present invention:

[0039] The cleansing essence of the present invention has the effect of suspending oil, and the resulting product contains oil in the form of beads, which are stable in the system. The use of amino acid surfactants such as sodium cocoylaminopropionate, potassium cocoyl glycinate, and sodium cocoyl glycinate gives the essence high foaming and cleansing effects. The use of ingredients such as oils and fats makes the product non-irritating and has excellent moisturizing effects.

[0040] The present invention uses an amino acid surfactant and oil in a mass ratio of not less than 1:1, so that the essence presents a suspended oil droplet effect, and the product is clear and transparent, and the product has a good appearance effect.

[0041] The present invention uses sodium cocoylaminopropionate, potassium cocoyl glycinate, and sodium cocoyl glycinate to prepare an essence. Compared with other surfactants (such as sodium α-olefin sulfonate, cocamidopropyl betaine, and lauryl glucoside), the essence has a better oil suspension effect, making the product appear to have stable oil droplets.

[0042] The present invention employs a process of first dissolving the surfactant in water, then adding the oil, and then the thickener. This produces an essence that exhibits a suspended oil effect, with oil droplets stably present within the essence. However, the process of first dissolving the surfactant in water, then adding the thickener and stirring evenly, and then adding the oil and stirring evenly, results in an emulsified essence that does not exhibit the appearance of suspended oil with stable oil droplets.

[0043] The essence prepared by the present invention can remove 97.79% of lip gloss, while the commercially available HBN triple amino acid facial cleanser can remove 91.48% of lip gloss. The essence of the present invention has an excellent cleaning effect on makeup.

[0044] The essence prepared by the present invention can remove 92.26% of Shu Uemura liquid foundation, while the commercially available HBN triple amino acid facial cleanser can remove 90.62% of liquid foundation. The essence of the present invention has an excellent cleaning effect on liquid foundation.

[0045] The essence prepared by the present invention can remove 83.68% of sunscreen, while the commercially available HBN triple amino acid facial cleanser can remove 66.24% of sunscreen. The essence of the present invention has an excellent cleaning effect on sunscreen.

[0046] The essence of the present invention can reduce the levels of inflammatory factors IL-1β and TNF-α. The essence of the present invention has a good anti-inflammatory effect, is non-irritating to the skin, and provides a good user experience. The white meadowfoam seed oil used in the essence of the present invention has a good anti-inflammatory effect.

[0047] The essence of the present invention contains rich moisturizing ingredients and emollient oils, so that the essence has a good moisturizing and nourishing effect on the skin.

[0048] The preparation process of the invention is simple, the cleaning essence has excellent performance, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] 1. Figure 1 This is the appearance picture of Essence 1.

[0050] 2. Figure 2 This is the appearance picture of Essence 4.

[0051] 3. Figure 3 This is the appearance picture of Essence 5.

[0052] 4. Figure 4 This is the appearance picture of Essence 9.

[0053] 5. Figure 5 This is the appearance picture of Essence 13.

[0054] 6. Figure 6These are pictures comparing the skin effects before, after, and after cleansing in a makeup removal test of different products.

[0055] 7. Figure 7 These are pictures comparing the skin effects before, after, and after applying foundation in a foundation removal test of different products. DETAILED DESCRIPTION

[0056] The present invention will be described below in conjunction with specific embodiments, and various effects of the present invention will be more clearly presented. It should be understood by those skilled in the art that these specific embodiments are for illustrating the present invention, rather than for limiting the present invention.

[0057] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0058] Pansy extract: The dried whole plant of Pansy tricolor was crushed to a particle size of less than 0.5 mm, and a 15-fold concentration of 25 wt% ethanol aqueous solution was added. The mixture was stirred at 65°C and 60 rpm for 12 hours, coarsely filtered through a 1 μm pore size filter membrane, and then filtered through an ultrafiltration membrane with a molecular weight cutoff of 1500 Da to obtain a filtrate. The filtrate was distilled under reduced pressure at 60°C to 12.4% of the filtrate mass, and then freeze-dried to a water content of 5.34 wt% to obtain a Pansy tricolor extract.

[0059] Kava extract: dried Piper methysticum leaves are crushed to a particle size of less than 0.5 mm, and a 20-fold concentration of 32 wt% ethanol aqueous solution is added, and the mixture is stirred at 70° C. and 60 rpm for 10 hours. The mixture is coarsely filtered through a 1 μm pore size filter membrane, and then filtered through an ultrafiltration membrane with a molecular weight cutoff of 1200 Da to obtain a filtrate. The filtrate is distilled under reduced pressure at 60° C. to 15.3% of the filtrate mass, and then freeze-dried to a water content of 5.78 wt% to obtain the Kava extract.

[0060] Limnanthes alba seed oil: Guangzhou Huashi Cosmetics Technology Co., Ltd. Jojoba seed oil: Xi'an Tiankang Biotechnology Co., Ltd. Milk thistle seed oil: Bozhou Xier Chinese Herbal Medicine Co., Ltd. Aloe vera extract: Xi'an Feida Biotechnology Co., Ltd.

[0061] 1. Preparation of cleansing essence

[0062] The composition of the cleansing essence is shown in Table 1, and the amounts of the raw materials are measured in mass percentages.

[0063] Table 1: Composition of cleansing essence

[0064]

[0065]

[0066] Table 1: Composition of cleansing essence

[0067]

[0068]

[0069] The preparation method of the above essences 1-12 is as follows:

[0070] Step 1: Place water in a container, add surfactant, and stir at 100 rpm for 0.4 hours to mix;

[0071] Step 2: Add oil and stir at 150 rpm for 0.5 hour to mix, then add thickener and continue stirring at 150 rpm for 0.4 hour;

[0072] Step 3: Add the remaining raw materials, stir at 80 rpm for 0.5 hours to mix, and sterilize to obtain the cleansing essence.

[0073] The difference between Essence 13 and Essence 1 lies in the preparation method, while all other aspects are the same. The preparation method of Essence 13 is as follows:

[0074] Step 1: Place water in a container, add surfactant, and stir at 100 rpm for 0.4 hours to mix;

[0075] Step 2: Add thickener and stir at 150 rpm for 0.4 hour to mix, then add oil and stir at 150 rpm for 0.5 hour to mix;

[0076] Step 3: Add the remaining raw materials, stir at 80 rpm for 0.5 hours to mix, and sterilize to obtain the cleansing essence.

[0077] 2. Effect Test

[0078] 1. Appearance test

[0079] The appearance of the essence prepared above was photographed to observe its appearance, as shown in the attached figure.

[0080] Through the attached pictures Figure 1 (Product appearance picture of Essence 1) It can be seen that the essence obtained by the formula of the present invention has the effect of suspending oil. The oil in the obtained product is stably present in the system in the form of beads, and the product appearance is clear and transparent, the oil droplets are evenly distributed, and the oil droplets do not aggregate (especially not on the surface).

[0081] The present invention uses an amino acid surfactant and oil in a mass ratio of not less than 1:1, so that the essence presents a suspended oil droplet effect, and the product is clear and transparent, and the product has a good appearance. Figure 2-3 (Attached Figure 2 This is the product appearance picture of Essence 4, attached Figure 3 (Product appearance picture of Essence 5) Figure 1 (corresponding to the product appearance picture of Essence 1) comparison; its, Figure 2 The corresponding essence 4 is due to the low ratio of surfactant to oil used in the present invention, which causes the oil droplets to float; Figure 3 The corresponding essence 5 is due to the excessive use of surfactant, which causes the oil to be emulsified and appear milky white in appearance.

[0082] The present invention uses sodium cocoylaminopropionate, potassium cocoyl glycinate and sodium cocoyl glycinate to prepare the essence, which has a better oil suspension effect than other surfactants (such as sodium α-olefin sulfonate, cocamidopropyl betaine, and lauryl glucoside), making the product appear to have stable oil droplets. Figure 1 (corresponding to the product appearance picture of Essence 1) and Figure 4 (corresponding to the product appearance picture of Essence 9) is compared; among them, Figure 4 The appearance is partially turbid and opaque with obvious oil droplets accumulated on the surface.

[0083] Furthermore, through Figure 1 (corresponding to the product appearance picture of Essence 1) and Figure 5 (corresponding to the product appearance picture of Essence 13) It can be seen from the comparison that the present invention adopts the process of first dissolving the surfactant in water, then adding the oil, and then adding the thickener. The essence prepared shows the effect of suspended oil, and the oil droplets are stably present in the essence. However, if the surfactant is first dissolved in water, then the thickener is added and stirred evenly, and then the oil is added and stirred evenly, the essence obtained is emulsified and cannot show the appearance of suspended oil with stable oil droplets. Among them, Figure 5 The oil droplets appear partially emulsified and the product has a cloudy and opaque appearance.

[0084] 2. Makeup removal ability test

[0085] Lip glaze (brand: Ke Laqi Wish Rabbit Lip Glaze) was evenly applied to a 4×4cm area on the inside of the arm and left to stand for half an hour. Then 0.5g of the product was used for cleaning and rinsing respectively. The L, A, and B values ​​before, after, and after application were measured using a spectrophotometer CM-700D. See Table 2. A 50x dermatoscope was used to take pictures before, after, and after application. Figure 6 .

[0086] The difference in skin color after applying makeup compared to the initial state is recorded as ΔE (after application); the difference in skin color before application and after cleansing is recorded as ΔE (after cleansing). ΔE can comprehensively reflect the three-dimensional changes in skin color. A larger ΔE value indicates a more obvious change in skin color, while a smaller ΔE value indicates a closer skin color. The cleansing rate is calculated using ΔE using the following formula:

[0087] ΔE=(ΔL2+Δa 2 +Δb 2 )^(1 / 2)

[0088] Cleaning rate = [ΔE (after smearing) - ΔE (after cleaning 1)] / ΔE (after smearing) × 100%. The cleaning rate results are shown in Table 2.

[0089] Among them, oil bead cleansing refers to the test conducted using the above-mentioned Essence 1 product, and HBN cleansing refers to the test conducted using the HBN Triple Amino Acid Facial Cleanser product.

[0090] Table 2: Makeup removal ability

[0091]

[0092]

[0093] The test shown in Table 2 shows that the essence prepared by the present invention can remove 97.79% of lip gloss, while the commercially available HBN triple amino acid facial cleanser can remove 91.48% of lip gloss. The essence of the present invention has an excellent cleansing effect on makeup.

[0094] 3. Liquid foundation removal ability test

[0095] Apply liquid foundation (brand: Shu Uemura Small Square Bottle Feather Shade Long-Lasting Liquid Foundation #674) evenly to a 4×4cm area on the inside of the arm and let it sit for half an hour. Then, use 0.5g of the product to cleanse and rinse. Use a spectrophotometer CM-700D to measure the L, A, and B values ​​before, after, and after application (see Table 3). Use a 50x dermatoscope to take pictures before, after, and after application (see Table 3). Figure 7 .

[0096] The difference in skin color after applying foundation compared to the initial state is recorded as ΔE (after application); the difference in skin color before application and after cleansing is recorded as ΔE (after cleansing). ΔE can comprehensively reflect the three-dimensional changes in skin color. A larger ΔE value indicates a more obvious change in skin color, while a smaller ΔE value indicates a closer skin color. The cleansing rate is calculated using ΔE using the following formula:

[0097] ΔE=(ΔL2+Δa 2 +Δb 2 )^(1 / 2)

[0098] Cleaning rate = [ΔE (after smearing) - ΔE (after cleaning 1)] / ΔE (after smearing) × 100%. The cleaning rate results are shown in Table 3.

[0099] Among them, oil bead cleansing refers to the test conducted using the above-mentioned Essence 1 product, and HBN cleansing refers to the test conducted using the HBN Triple Amino Acid Facial Cleanser product.

[0100] Table 3: Liquid foundation removal ability test

[0101]

[0102] The test results in Table 3 show that the essence prepared by the present invention can remove 92.26% of Shu Uemura liquid foundation, while the commercially available HBN triple amino acid facial cleanser can remove 90.62% of liquid foundation. The essence of the present invention has an excellent cleansing effect on liquid foundation.

[0103] 4. Sunscreen removal ability test

[0104] Sunscreen (Anessa Anessa Gold Bottle Sunscreen) was evenly applied to a 4×4 cm area on the inner side of the arm and left to stand for half an hour. Then, 0.5 g of the product was used for cleaning and rinsing respectively. UVLOOK was used to take pictures before, after and after application. The brightness was analyzed using IPP software. The results are shown in Table 4.

[0105] The cleaning rate was calculated using the formula: Cleaning rate = 100% - [(brightness after application - brightness before application) - (brightness after application - brightness after cleaning)] / (brightness after application - brightness before application) × 100%. The cleaning rate results are shown in Table 4.

[0106] Among them, oil bead cleansing refers to the test conducted using the above-mentioned Essence 1 product, and HBN cleansing refers to the test conducted using the HBN Triple Amino Acid Facial Cleanser product.

[0107] Table 4: Sunscreen removal ability test

[0108] product Brightness before application Brightness after application Brightness after cleaning Cleanliness rate Oil beads cleanser 163.22 74.12 148.68 83.68％ HBN Cleansing 158.78 80.85 132.47 66.24％

[0109] The test results in Table 4 show that the essence prepared by the present invention can remove 83.68% of sunscreen, while the commercially available HBN triple amino acid facial cleanser can remove 66.24% of sunscreen. The essence of the present invention has an excellent cleaning effect on sunscreen.

[0110] 5. Anti-inflammatory effect test

[0111] HaCaT cells were seeded into the well plate and incubated in a 37°C, 5% CO2 incubator. When the cell plating rate in the well plate reached 55%, cell culture medium was added and the above essence was added to adjust the concentration to 6wt%, and then 30mJ / cm 2 The cells were irradiated with UVB for 30 minutes and then incubated in a 37°C, 5% CO2 incubator for 24 hours. After incubation, the IL-1β and TNF-α levels were determined using ELISA kits. The test results are shown in Table 5.

[0112] Table 5: Anti-inflammatory effect test

[0113]

[0114]

[0115] The test results in Table 5 show that the essence of the present invention can reduce the levels of inflammatory factors IL-1β and TNF-α. The essence of the present invention has a good anti-inflammatory effect, is non-irritating to the skin, and provides a good user experience. Furthermore, the tests of Essences 1 and 6 show that the meadowfoam seed oil used in the essence has a good anti-inflammatory effect. The pansy extract and kava extract further enhance the essence's skin-soothing effect.

[0116] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A clear and transparent cleansing essence for suspending oil, characterized in that: Calculated by mass percentage, the components are: 4-30% sodium cocoylaminopropionate, 0.1-5% potassium cocoyl glycinate and 0.1-5% sodium cocoyl glycinate, 0.5-40% oil, 2-10% moisturizer, 1.5-7% thickener, 0.01-0.5% pH adjuster, 0.02-1.2% aloe vera extract, 0.05-1.2% pansy extract, 0.04-1% kava extract, 0.5-2.5% foam stabilizer, 0.01-0.5% chelating agent, 0.02-0.4% preservative and the balance water; The above-mentioned sodium cocoylaminopropionate, potassium cocoyl glycinate and sodium cocoyl glycinate are used as amino acid surfactants in the cleansing essence; The mass ratio of amino acid surfactant coconut oil to oil is not less than 1:1 and not more than 3:1; The oil is at least one of meadowfoam seed oil, jojoba seed oil, silybum seed oil, pentaerythritol tetraisostearate, and polydimethylsiloxane; The moisturizing agent is at least one of glycerol and ethylene glycol; The thickener is EMUL 400; The pH regulator is at least one of arginine and sodium hydroxide; The foam stabilizer is polyethylene glycol-14M; The chelating agent is EDTA-2Na; The preservative is at least one of sodium benzoate and phenoxyethanol; The preparation method of the cleaning essence comprises: Step 1: Place water in a container, add amino acid surfactant, and stir to mix; Step 2: Add the oil and stir to combine, then add the thickener and continue stirring; Step 3: Add the remaining raw materials, stir and mix, and sterilize to obtain the cleansing essence.

2. Use of the cleansing essence according to claim 1 in cleaning hair or skin.

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