CN114246812A

CN114246812A - Skin cleaning composition and preparation method and application thereof

Info

Publication number: CN114246812A
Application number: CN202111610371.8A
Authority: CN
Inventors: 李欢玲; 余龙飞; 贾康乐; 麦裕良; 黄淋佳; 辛锦兰; 吴海福; 郑小珊
Original assignee: Institute of Chemical Engineering of Guangdong Academy of Sciences
Current assignee: Institute of Chemical Engineering of Guangdong Academy of Sciences
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-03-29
Anticipated expiration: 2041-12-27
Also published as: CN114246812B

Abstract

The invention discloses a skin cleaning composition and a preparation method and application thereof, wherein the skin cleaning composition comprises the following components in parts by weight: 10-30 parts of natural oil, 10-80 parts of synthetic ester, 10-80 parts of polyhydric alcohol and 0.5-5 parts of emulsifier. The skin cleaning composition disclosed by the invention can realize warm makeup removal, is fresh and non-irritant, has strong makeup removal capability and convenient use, has the advantage of moisture retention after washing, does not have the bitter taste similar to an EO surfactant in a commercial makeup removal product, has soft taste, and can be safely applied to the face, eyes and lips. The skin cleaning composition disclosed by the invention is gently massaged when being applied, so that the skin is heated to open pores, the skin attachment effect is good, the makeup can be quickly dissolved and dirt in the pores can be thoroughly removed by utilizing the rolling effect of gel, the makeup can be quickly emulsified when being wetted by water, the makeup cleaning composition is extremely easy to wash, the dirt and the residue of the makeup can be quickly taken away by water flow, and the makeup cleaning composition is completely removed.

Description

Skin cleaning composition and preparation method and application thereof

Technical Field

The invention relates to the field of cosmetics, and particularly relates to a skin cleaning composition and a preparation method and application thereof.

Background

In recent years, with the improvement of national income and consumption capacity, Chinese cosmetics have not been developed greatly, and consumers actively select various cosmetics to protect and modify skin. Daily makeup cosmetics (including BB cream, lipstick, lip gloss, eyebrow pencil, eye shadow, blush, etc.) and sunscreen products contain a large amount of oil, wax, silicone oil or oil dispersion, and are highly skin-friendly, and are difficult to clean with commercially available conventional cleansing products, such as: the protective film formed on the surface of the skin by the sunscreen cream, the pollution particles attached to the sunscreen cream, color cosmetics attached to the mucous membrane of the eye, blackhead dirt caused by oxidation of sebum at the root of eyelashes and deep pores, dirt attached to old waste cutin and oxidized and yellow, and the like are difficult to clean, and the following skin problems are easily caused: meibomian gland obstruction, dry eye, pigmentation, skin aging, pore blockage, blackheads, etc., and even cause the skin barrier to be compromised. Therefore, the makeup remover is used as a transition product for connecting makeup and skin care products and is continuously expanded in the market.

Currently, common makeup removing products in the market comprise makeup removing cream, makeup removing milk, makeup removing gel, makeup removing oil, makeup removing water, makeup removing wet tissues and the like; cleansing water and cleansing oil are used in relatively large amounts. The makeup remover mainly utilizes the principle of surfactant micelle to remove makeup, has fresh texture but relatively poor makeup removing capability, contains PEG (polyethylene glycol) and has large using amount and potential irritation, lips have bitter taste when used, and skin is easily damaged when the makeup remover needs to be repeatedly wiped by makeup removing cotton when the makeup remover is used. The cleansing oil achieves the purpose of cleansing by dissolving makeup with grease through the principle of similarity and intermiscibility, has strong cleansing capability, but has greasy skin after washing, is easy to cause acne, and needs to be further cleaned by facial cleanser. The two common makeup removing products have low viscosity, are easy to run off when being smeared, are inconvenient to use and have product waste. In addition, the makeup removing products sold in the market at present often contain mineral oil, polyethylene wax and the like, and skin allergy and acne are easily caused when the purity of the components is insufficient, so that along with the rapid penetration of the makeup habit, the fine upgrading of the skin care requirement and the acceleration of the life rhythm, the development of a mild cleaning product which does not damage a skin lipid membrane, protects a skin barrier and is easy to use is particularly important.

Disclosure of Invention

In order to overcome the problems of the prior art, the invention aims to provide a skin cleaning composition, which is a gel-like skin cleaning composition prepared by using natural source emulsifier and natural grease and synthetic ester as main makeup removing components.

The invention also aims to provide a preparation method of the skin cleansing composition.

The invention also aims to provide the application of the skin cleaning composition in cosmetics.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the first aspect of the invention provides a skin cleansing composition, which comprises the following components in parts by weight: 10-30 parts of natural oil, 10-80 parts of synthetic ester, 10-80 parts of polyhydric alcohol and 0.5-5 parts of emulsifier.

Preferably, the emulsifier is a naturally derived emulsifier.

In the skin cleaning composition, the emulsifier is 0.5-5 parts; preferably, the emulsifier is 0.5-5 parts; more preferably, the emulsifier is 1-3 parts.

Preferably, the emulsifier is selected from at least one of sodium surfactin, hydrogenated lecithin, sucrose stearate, polyglycerol-10 oleate, polyglycerol-2 triisostearate and caprylic/capric glyceride polyglycerol-10 ester; further preferably, the emulsifier is at least one selected from sodium surfactin, hydrogenated lecithin, polyglycerol-2 oleate, polyglycerol-2 triisostearate, and caprylic/capric glyceride polyglycerol-10 ester; still more preferably, the emulsifier is selected from at least one of sodium surfactin and hydrogenated lecithin.

In the skin cleaning composition, 10-80 parts of polyhydric alcohol; preferably, the polyol is 15 to 60 parts; further preferably, the polyol is 30 to 40 parts.

Preferably, the polyol is selected from at least one of C2-C12 polyol; further preferably, the polyalcohol is at least one selected from C3-C5 trihydric alcohol and C2-C6 dihydric alcohol; still more preferably, the polyhydric alcohol is at least one of glycerol, dipropylene glycol, 1, 3-propanediol, 1, 3-butanediol, 2, 3-butanediol, 1, 2-pentanediol, 1, 2-hexanediol; more preferably, the polyol is glycerol.

Preferably, the natural oil is natural vegetable oil.

In the skin cleaning composition, 10-30 parts of natural oil; preferably, the natural oil is 15-30 parts; still more preferably, the natural oil is 15 to 25 parts.

Preferably, the natural oil is at least one selected from wheat germ oil, rice bran oil, corn oil, soybean oil, coconut oil, camellia seed oil, meadowfoam seed oil, sea buckthorn seed oil, sweet almond oil, grape seed oil, macadamia nut oil, berhard walnut seed oil, jojoba seed oil, saffron oil, sucrose squalane, acanthus spinosus kernel oil, rosa canina fruit oil and avocado oil; further preferably, the natural oil is at least one selected from rice bran oil, jojoba seed oil, sea buckthorn seed oil, sweet almond oil, burkholderia seed oil, meadowfoam seed oil, sucrose squalane, saffron oil and wheat germ oil.

In the skin cleaning composition, the synthetic ester accounts for 10-80 parts; preferably, the synthetic ester accounts for 20-60 parts; more preferably, the synthetic ester is 30 to 40 parts.

Preferably, the synthetic ester is selected from at least one of glycerol tri (ethylhexanoate), glyceryl caprylate/caprate, isopropyl myristate, isononyl isononanoate, isotridecanol isononanoate, ethylhexyl palmitate, coco octanoate/caprate, cetyl ethylhexanoate, diisostearyl malate, pentaerythritol tetra (ethylhexanoate), isopropyl lauroyl sarcosinate; further preferably, the synthetic ester is selected from at least one of cetyl ethyl hexanoate, diisostearyl malate, isotridecyl isononanoate, isononyl isononanoate, coco caprylic/capric acid ester, caprylic/capric acid glyceride.

Preferably, the skin cleansing composition further comprises at least one of essential oils, additives, thickeners, preservatives, water.

Preferably, the skin cleansing composition further comprises the following components in parts by weight: 0-2 parts of essential oil, 0-5 parts of additive, 0-5 parts of thickening agent and 0-1 part of preservative.

Preferably, the skin cleansing composition is gel-like.

In the skin cleaning composition, 0-2 parts of essential oil; preferably, 0-2 parts of essential oil is used, but the essential oil is not 0; further preferably, the essential oil is 0.5-1.5 parts.

Preferably, the essential oil is at least one selected from rosemary essential oil, sage essential oil, lavender essential oil, orange peel essential oil, ylang-ylang essential oil, tea tree essential oil, geranium essential oil and chamomile essential oil; further preferably, the essential oil is at least one selected from lavender essential oil, orange peel essential oil, ylang essential oil, geranium essential oil, chamomile essential oil and rosemary essential oil.

In the skin cleaning composition, 0-5 parts of additive is added; preferably, the additive is 0-5 parts, but the additive is not 0; more preferably, the additive is 0.5-2.5 parts.

Preferably, the additive is selected from at least one of rhamnolipid, hyaluronic acid, sodium hyaluronate acylate, sodium polyglutamate, stearoyl polyglucosamine, tremella extract, kumquat extract, tea polyphenol, polyaspartic acid, amino acid humectant, pullulanase polysaccharide, erythritol, rhamnose and stachyose.

In the skin cleaning composition, 0-5 parts of a thickening agent; preferably, the thickening agent is 0-4 parts; further preferably, the thickener is 0 to 2.5 parts.

Preferably, the thickeners include water phase thickeners and oil phase thickeners.

Preferably, the aqueous phase thickener comprises at least one of dibutyl ethylhexanoyl glutamine, dibutyl lauroyl glutamate, polyglycerol-10 behenate/eicosanedioate, xanthan gum and carrageenan.

Preferably, the oil phase thickener comprises at least one of glyceryl behenate/eicosanedioate, pentaerythritol behenate, and glyceryl trihydroxystearate.

In the skin cleaning composition, 0-1 part of preservative is used; preferably, the preservative is 0-1 part, but the preservative is not 0; more preferably, the preservative is 0.5 to 1.5 parts.

Preferably, the preservative is selected from at least one of phenoxyethanol, ethylhexyl glycerol, caprylhydroxamic acid, sodium citrate and p-hydroxyacetophenone.

The second aspect of the invention also provides a preparation method of the skin cleansing composition provided by the first aspect of the invention, wherein the preparation method adopts a D-phase emulsification method.

Preferably, the phase D emulsification process comprises the steps of:

s1: mixing polyalcohol, additive, antiseptic and water to obtain phase A; mixing natural oil, synthetic ester and essential oil to obtain phase B; the phase A or the phase B also comprises a step of adding an emulsifier;

s2: and mixing the phase A with the phase B to prepare the skin cleaning composition.

Preferably, the step S1 further includes the step of adding a thickener.

Preferably, in step S1, the preparation of phase a further includes a step of adding an aqueous phase thickener; and/or, the preparation of the phase B also comprises the step of adding an oil phase thickener.

Preferably, the mixing step is by heat mixing.

Preferably, the heating temperature is 40-100 ℃; further preferably, the heating temperature is 60 to 90 ℃.

Preferably, the mixing step in step S1 employs at least one of stirring, ultrasound, and shaking.

Preferably, the a phase is a clear solution.

Preferably, in step S2, the mixing step is performed by at least one of stirring, ultrasound, and shaking.

Preferably, in the step S2, the mixing step uses stirring for mixing.

Preferably, in the step S2, the stirring speed is 400 to 2000 rpm.

Preferably, in step S2, the stirring step uses two-stage stirring.

Preferably, the first section of the two-section stirring adopts a first stirring speed, and the second section adopts a second stirring speed.

Preferably, the first stirring speed is less than the second stirring speed.

Preferably, the first stirring speed is 400-; further preferably, the first stirring speed is 450-550 rpm; still more preferably, the first stirring speed is 500-

Preferably, the second stirring speed is 800-; further preferably, the second stirring speed is 900-; still further preferably, the second stirring speed is 1000-.

Preferably, the agitation is performed at a first agitation rate before the phases a and B are mixed without forming a thick gel, and at a second agitation rate after the phases are mixed to form a thick gel.

Preferably, the scraping process is performed during the stirring process.

Preferably, after the A phase and the B phase are completely mixed, stirring is continued for 3-10 min.

Preferably, after the phases A and B are all mixed, stirring is continued for 5 min.

Preferably, step S2 further includes the step of homogenizing the skin cleansing composition thus prepared.

Preferably, the homogenization time is 1-2 min.

Preferably, step S2 further includes the step of vacuum defoaming the prepared skin-cleaning composition.

Preferably, the temperature of the skin cleansing composition in step S2 is lowered before discharging.

Preferably, the temperature of the skin cleansing composition is reduced to not higher than 45 ℃.

The third aspect of the invention also provides the use of the skin cleansing composition provided by the first aspect of the invention in cosmetics.

Preferably, the skin cleansing composition is applied to a skin cleansing product.

Preferably, the skin cleansing composition is applied to a facial cleansing product.

Preferably, the facial cleanser product is a facial cleanser or a face wash.

Preferably, the skin cleansing composition is applied to a makeup removal product.

Preferably, the makeup removal product is a makeup removal gel, a makeup removal cream, a makeup removal water, a makeup removal oil or a makeup removal gel.

The invention has the beneficial effects that: the skin cleaning composition disclosed by the invention can realize warm makeup removal, is fresh and non-irritant, has strong makeup removal capability and convenient use, has the advantage of moisture retention after washing, does not have the bitter taste similar to an EO surfactant in a commercial makeup removal product, has soft taste, and can be safely applied to the face, eyes and lips.

The skin cleaning composition disclosed by the invention is gently massaged when being applied, so that the skin is heated to open pores, the skin attachment effect is good, the makeup can be quickly dissolved and dirt in the pores can be thoroughly removed by utilizing the rolling effect of gel, the makeup can be quickly emulsified when being wetted by water, the makeup cleaning composition is extremely easy to wash, the dirt and the residue of the makeup can be quickly taken away by water flow, and the makeup cleaning composition is completely removed; meanwhile, the components are matched synergistically, and after the skin is washed away by water, the skin is moistened and smooth and has lasting moisture retention.

The preparation method of the skin cleaning composition has the advantages of simple process, easy operation, no requirement on equipment and good reproducibility. The emulsifier and the polyalcohol are adopted to wrap different natural grease, and a D-phase emulsification technology is utilized, so that a transparent gel product is formed.

Drawings

Fig. 1 is an electron microscope image of the skin cleansing composition of example 1.

Fig. 2 is an electron microscope image of the skin cleansing composition of example 2.

Fig. 3 is an electron microscope image of the skin cleansing composition of example 3.

Fig. 4 is an electron microscope image of the skin cleansing composition of example 4.

FIG. 5 is a graph showing the results of shear rheology tests on the skin cleansing compositions of examples 1-4.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

The raw materials used in the following examples 1 to 4 and comparative example 1 were artificially divided into a component a and a component B. The content of each raw material in the component A and the component B is based on the content of the whole skin cleaning composition. The sum of the weight fractions of all the components in examples 1 to 4 is 100%, and if the sum of the components A and B in examples 1 to 4 and comparative example 1 is less than 100%, the balance is water.

Example 1:

the skin cleaning composition in the embodiment comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight: 0.6% of sodium surfactin, 5% of rhamnolipid (the content of active substances is 10%), 0.5% of phenoxyethanol and 27.5% of glycerol; the component B comprises the following components in percentage by weight: 15% of rice bran oil, 3.0% of jojoba seed oil, 1.0% of sea buckthorn seed oil, 1.0% of sweet almond oil, 0.2% of lavender essential oil, 0.2% of orange peel essential oil, 0.2% of ylang-ylang essential oil, 18% of glycerol tri (ethyl hexanoate), 10% of isotridecanol isononanoate, 10% of cetyl ethyl hexanoate, 2.8% of isopropyl lauroyl sarcosinate and 5% of isostearyl malate.

The skin cleansing composition in this example was prepared by the following steps:

(1) uniformly mixing rhamnolipid, phenoxyethanol and glycerol according to the formula ratio, dispersing surfactin sodium in the rhamnolipid, heating to 50 ℃ until the surfactin sodium is completely dissolved, and uniformly stirring to obtain a component A; uniformly dispersing the component B in the formula amount in advance to obtain a component B;

(2) stirring at a stirring speed of 500rpm, slowly adding the component B into the component A in batches, increasing the stirring speed to 1000rpm when the formed gel has higher viscosity, and continuously stirring to ensure that the gel tends to be uniform and smooth; after water is added according to the transparency and defoamed, the skin cleaning composition in the embodiment is prepared.

Example 2

The skin cleansing composition in this example comprises a component a and a component B, wherein: the component A comprises the following components in percentage by weight: 1, 3-propylene glycol, 12% of glycerol, 0.1% of stearoyl polyglucosamine, 4% of water and 0.01% of sodium citrate; the component B comprises the following components in percentage by weight: hydrogenated lecithin 1.5%, polyglycerol-10 oleate 4.25%, polyglycerol-2 oleate 0.75%, polyglycerol-2 triisostearate 5%, juglans borealis oil 10%, meadowfoam oil 3.0%, sucrose squalane 5.0%, geranium essential oil 0.2%, rosemary essential oil 0.2%, chamomile essential oil 0.1%, isononyl isononanoate 10%, cetyl ethylhexanoate 15%, coco caprylic/capric acid 5%, caprylic/capric triglyceride 22.89%.

(1) separately heating and dissolving the component A and the component B at 80 ℃, and uniformly mixing;

(2) slowly adding the component A into the component B at a stirring speed of 500rpm, increasing the stirring speed to 1000rpm when the formed gel has higher viscosity, and continuously stirring to ensure that the gel tends to be uniform and smooth; the gel-like skin cleansing composition obtained was cooled to 25 ℃ and discharged after defoaming, to obtain the skin cleansing composition of the present example.

Example 3

The skin cleansing composition in this example comprises a component a and a component B, wherein: the component A comprises the following components in percentage by weight: 3.0 percent of polyglycerol-10 behenate/eicosanedioate, 1.5 percent of polyglycerol-10 stearate, 1.2 percent of sucrose stearate, 60 percent of glycerol, 1.0 percent of dipropylene glycol, 0.2 percent of acetylated sodium hyaluronate, 0.3 percent of phenoxyethanol, 0.2 percent of ethylhexyl glycerol and 1.6 percent of water; the component B comprises the following components in percentage by weight: saffron oil 5%, sweet orange oil 1%, isononyl isononanoate 8%, cetyl alcohol (ethyl hexanoate) 15%, and glyceryl behenate/eicosanedioic acid ester 2%.

(1) separately heating and dissolving the component A and the component B at the temperature of 80 ℃ and the stirring speed of 500rpm, and uniformly mixing;

(2) slowly adding the component A into the component B at a stirring speed of 500rpm, increasing the stirring speed to 1500rpm when the viscosity of the formed gel is higher, and continuously stirring to ensure that the gel tends to be uniform and smooth; cooling the gel-like skin cleaning composition to 60 deg.C, and stopping stirring; cooling to room temperature and discharging to obtain the skin cleaning composition in the example.

Example 4

The skin cleansing composition in this example comprises a component a and a component B, wherein: the component A comprises the following components in percentage by weight: 0.2% of pullulanase polysaccharide, 0.2% of rhamnose, 0.1% of stachyose, 1.39% of dibutyl ethylhexanoyl glutamine, 0.61% of dibutyl lauroyl glutamate, 5% of 1, 2-pentanediol, 10% of glycerol, 0.5% of p-hydroxyacetophenone and 1.5% of water; the component B comprises the following components in percentage by weight: 25% of wheat germ oil, 20% of cetyl ethyl hexanoate, 18% of polyglycerol-10 dioleate, 15.0% of caprylic/capric triglyceride and 2.5% of polyglycerol-2 oleate.

The skin cleansing composition of this example was prepared by the following specific steps:

(1) separately heating and dissolving the component A and the component B at the temperature of 90 ℃ and the stirring speed of 500rpm, and uniformly mixing;

(2) slowly adding the component A into the component B at the temperature of 90-100 ℃ and the stirring speed of 500rpm, increasing the stirring speed to 1000rpm when the formed gel has high viscosity, continuously stirring to fully mix, stopping stirring, cooling to room temperature, and bottling to obtain the skin cleaning composition in the embodiment.

Comparative example 1

The skin cleaning composition in the embodiment comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight: 5% of rhamnolipid (the content of effective substances is 10%), 0.5% of phenoxyethanol and 26.2% of glycerol; the component B comprises the following components in percentage by weight: 2% of glyceryl monostearate, 15% of rice bran oil, 3.0% of jojoba seed oil, 1.0% of sea buckthorn seed oil, 1.0% of sweet almond oil, 0.2% of lavender essential oil, 0.2% of orange peel essential oil, 0.1% of ylang-ylang essential oil, 18% of glycerol tri (ethyl hexanoate), 10% of isotridecyl alcohol isononanoate, 10% of cetyl alcohol ethyl hexanoate, 2.8% of lauroyl sarcosine isopropyl ester and 5% of isostearyl alcohol malate.

The skin cleansing composition in this example was prepared using the following phase inversion emulsification procedure:

(1) uniformly mixing rhamnolipid, phenoxyethanol and glycerol according to the formula ratio to obtain a component A; heating the component B in the formula amount to 50 ℃ until the component B is completely dissolved, and dispersing the component B uniformly in advance to obtain the component B;

(2) stirring at a stirring speed of 500rpm, slowly adding the component A into the component B in batches, increasing the stirring speed to 1500rpm when the viscosity of the formed emulsion is higher, and continuously stirring to enable the emulsion to tend to be uniform and smooth; after defoaming, the material was discharged to obtain the skin cleansing composition of this example.

Comparative example 2

The skin cleaning composition in the embodiment comprises the following components in percentage by weight: 9.5% of PEG-20 glyceryl tristearate, 9.5% of sorbitol polyether-30 tetraisostearate, 20.0% of cetyl ethylhexanoate, 51% of ethylhexyl palmitate, 5.0% of isononyl isononanoate and 5.0% of glyceryl tri (ethylhexanoate).

The skin cleansing composition in this example was prepared using the following mixing procedure:

mixing and stirring all the raw materials according to the formula ratio at the stirring speed of 1000rpm, heating to 85 ℃, preserving heat for 10 minutes, then stirring, cooling to room temperature, and discharging to obtain the skin cleaning composition in the embodiment.

And (3) performance testing:

(1) storage stability test

The skin cleansing composition samples of examples 1-4 and comparative examples 1-2 were tested for storage stability under the following individual test conditions: (1) storing at 50 deg.C for 1 month; (2) storing at 5 deg.C for 1 month; (3) storing at-20 deg.C for 1 month; (4) storing for 24h under the condition of 50 ℃ and then storing for 24h under the condition of-20 ℃ for three times. After the test, the skin cleansing composition sample was observed for changes in appearance. Specific test results are shown in table 1.

TABLE 1 storage stability

As can be seen from table 1, the skin cleansing compositions of examples 1 to 4 all had excellent storage stability and were not easily deteriorated during storage.

(2) And (4) microscopic observation:

samples of the skin cleansing compositions of examples 1-4 were individually smeared onto glass slides and observed and recorded using an Olympus electron microscope, and the results are shown in fig. 1-4. As can be seen from fig. 1, the skin cleansing composition of example 1 is a layered structure; as can be seen from fig. 2, the skin cleansing composition of example 2 is of a vesicle structure; as can be seen from fig. 3 and 4, the skin cleansing compositions of example 3 and example 4 are both of a conventional emulsion structure.

(3) Shear rheology test:

the skin cleansing compositions of examples 1-4 were tested for viscosity as a function of shear rate using a Haake Mars modulated Advanced Rheometer System 40 Rheometer in frequency sweep mode with rotor P35/Ti at 25 deg.C, and the results are shown in FIG. 5. As can be seen from FIG. 5, the viscosity of the skin cleansing compositions of examples 1-4 all dropped rapidly with increasing shear rate. It can be seen that the skin cleansing compositions of examples 1 to 4 had good spreadability, and the viscosity of the skin cleansing compositions decreased during application.

(4) And (3) particle size testing:

the particle size of the skin cleansing composition samples of examples 1-4 and comparative examples 1-2 was determined using a malvern nano particle size analyzer, the specific test method being: firstly, preparing a sample into 0.1% aqueous solution, uniformly dispersing, placing 1mL of solution into a sample cell of a particle size analyzer, and measuring the particle size of the sample at 25 ℃. The results are shown in Table 2. As can be seen from table 2: the skin cleansing compositions of examples 1 to 4 had particle sizes of 0.1 to 1 μm and had smaller particle sizes than those of comparative examples 1 to 2.

(5) And (3) safety evaluation:

human skin patch experiment:

number of test population: 5 persons;

age: between 25 and 45 years old;

sex: a female;

the spot pasting method comprises the following steps: the normal skin of the forearm of the subject on the curved side is cleaned and wiped dry, the protective paper of the spot test tape is removed, 0.1g of the test substance in examples 1 to 4 and comparative examples 1 to 2 is dropped into the spot tester, the spot test tape is firmly pasted and flatly pasted from bottom to top, and air is discharged by light pressure of the palm. The test substance is removed after 24h, the skin reaction is observed for 0.5h, 6h, 12h, 24h and 48h after the removal, the results are recorded according to the skin reaction grading standard in the cosmetic hygiene Specification, and the specific results are shown in the following table 2.

Eye and lip irritation test:

the subjects applied the color cosmetic products to the skin of the canthus and the lips, and after maintaining for 10min, applied the makeup removal using the skin cleansing compositions prepared in examples 1 to 4 and comparative examples 1 to 2. In use, the skin cleansing composition is first applied uniformly to the eyes and lips, gently massaged, and after about 1min, eye and lip irritation is assessed. The results are shown in Table 2.

TABLE 2 skin cleansing compositions particle size and irritation

Is meant to be non-irritating

As can be seen from Table 2, the skin cleansing compositions prepared in accordance with the present invention have a small particle size and are non-irritating to the skin, eyes and lips.

(6) And (3) makeup removal effect test:

number of test population: 5 persons;

age: between 25 and 45 years old;

sex: a female;

the test method comprises the following steps: cleaning and wiping the normal skin on the curved side of the forearm of the subject, applying a waterproof eyeliner, lipstick and BB cream to the forearm, drying for 10min, dropping 0.1g of the skin-cleaning composition test sample of examples 1-4 and comparative example 2, performing loop massage, adding a small amount of water for massage, finally rinsing with water, and wiping off water. The average score of each item was calculated from 5-grade evaluation comparisons of skin-contact, spreadability, cleansing, rinsing, and moist feeling. Grading standard: the skin cleansing compositions of examples 1 to 4 were tested for skin temperature change before and after application, skin cutin moisture content before application and after 30min removal of the skin cleansing composition, with a score of 1 to 5 being the best and a score of 5 being the worst. Specific test results are shown in tables 3, 4 and 5.

TABLE 3 cleaning power

Test sample	BB cream	Waterproof eyeliner	Lipstick
				Example 1	4.5	4	4.5
Example 2	4.5	4	4.5
				Example 3	4.5	3.5	4.5
Example 4	4.5	4	4.5
				Comparative example 2	4	3	4

TABLE 4 cleansing effect

TABLE 5 skin temperature and keratinous moisture Change

As can be seen from tables 3 to 5, the skin cleansing compositions in examples 1 to 4 of the present invention slightly increase skin temperature during use, and have good cleansing power, skin adhesion, spreadability, and washability, without using a facial cleanser for secondary cleansing; the skin is smooth after application, and high keratin moisture content is maintained. The invention adopts the emulsifier with natural source, and solves the problems of irritation and dehydration caused by the use of the existing emulsifier on sensitive skin.

As can be seen from tables 1 to 5, the skin cleansing compositions prepared in examples 1 to 4 all have excellent storage stability, smaller particle size, good cleansing power, skin-attaching property, spreadability and rinsing property, and no irritation to the skin, and compared with examples 3 and 4, examples 1 and 2 have more excellent properties, example 1 adopts sodium subtilism as an emulsifier, example 2 adopts hydrogenated lecithin as an emulsifier, both can obtain a gel with higher viscosity without adding a polymer, and the layered structure formed in example 1 and the vesicle structure formed in example 2 can effectively wrap high-content oily components, so that the active components can be quickly attached to the skin when the gel is applied, quickly emulsified in water, and can be washed and discharged into one body, and the skin cleansing compositions are silky and locked after being discharged, and have the best comprehensive properties.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A skin cleansing composition characterized by: the skin cleaning composition comprises the following components in parts by weight: 10-30 parts of natural oil, 10-80 parts of synthetic ester, 10-80 parts of polyhydric alcohol and 0.5-5 parts of emulsifier.

2. The skin cleansing composition according to claim 1, characterized by: the emulsifier is at least one selected from sodium surfactin, hydrogenated lecithin, sucrose stearate, polyglycerol-10 oleate, polyglycerol-2 triisostearate and caprylic/capric glyceride polyglycerol-10 ester.

3. The skin cleansing composition according to claim 1, characterized by: the natural oil is selected from at least one of wheat germ oil, rice bran oil, corn oil, soybean oil, coconut oil, camellia seed oil, meadowfoam seed oil, sea buckthorn seed oil, sweet almond oil, grape seed oil, macadamia nut oil, Boer hard walnut seed oil, jojoba seed oil, saffron oil, sucrose squalane, Aralia mandshurica kernel oil, Rosa canina fruit oil and avocado oil.

4. The skin cleansing composition according to claim 1, characterized by: the synthetic ester is selected from at least one of glycerol tri (ethyl hexanoate), caprylic/capric glyceride, isopropyl myristate, isononyl isononanoate, isotridecanol isononanoate, ethylhexyl palmitate, coco caprylic/capric ester, cetyl ethylhexanoate, diisostearyl malate, pentaerythritol tetra (ethyl hexanoate), isopropyl lauroyl sarcosinate.

5. The skin cleansing composition according to any one of claims 1 to 4, characterized by: the skin cleaning composition further comprises at least one of essential oil, additive, thickener, preservative and water; the thickening agent comprises an aqueous phase thickening agent and an oil phase thickening agent.

6. The skin cleansing composition according to claim 1, characterized by: the skin cleaning composition also comprises the following components in parts by weight: 0-2 parts of essential oil, 0-5 parts of additive, 0-5 parts of thickening agent and 0-1 part of preservative.

7. The skin cleansing composition according to claim 5, characterized by: the skin cleaning composition is gel-like.

8. A method of preparing a skin cleansing composition according to claim 5, characterized by: the preparation method adopts a D-phase emulsification method.

9. A method of preparing a skin cleansing composition according to claim 8, characterized by: the phase D emulsification method comprises the following steps:

s1: mixing polyalcohol, additive, antiseptic and water to obtain phase A; mixing natural oil, synthetic ester and essential oil to obtain phase B; the preparation of the phase A or the phase B also comprises a step of adding an emulsifier;

10. Use of the skin cleansing composition according to any one of claims 1 to 7 in cosmetics.