Emulsifier Composition, Cleansing Cosmetics, and Their Preparation Methods and Uses

Abstract

The present application provides an emulsifier composition, comprising an emulsifier and a co-emulsifier. The emulsifier includes a combination of Class A emulsifiers and Class B emulsifiers or Class C emulsifiers. Among them, the Class A emulsifiers are selected from one or more of PEG-100 stearate, PEG-7 glyceryl cocoate, behenyl alcohol polyether-25, PEG-20 glyceryl triisostearate, PEG-5 glyceryl triisostearate, PEG-7 caprylic / capric glycerides, and PEG-25 stearate; the Class B emulsifiers are selected from one or more of glyceryl stearate, glyceryl isostearate, polyglyceryl-3 methylglucose distearate, and glyceryl stearate citrate; the Class C emulsifiers are selected from PEG-6 glyceryl isostearate and PEG-8 glyceryl isostearate. The cleaning composition prepared by the present application can maintain strong cleaning ability in a formulation with low emulsifier or surfactant content, and has better makeup removing effects compared with makeup removing oils and makeup removing milks on the market.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetics, and particularly relates to an emulsifier composition, a cleansing cosmetic, a preparation method thereof, and the use of the emulsifier composition. Background Art

[0002] Existing cleansing cosmetics include forms such as cleansing oils, cleansing milks, facial cleansers, etc. For example, cleansing oils generally use high-content oils and surfactants to achieve the cleansing effect, but they often have certain irritation due to the high surfactant content and have a relatively greasy feel. Compared with cleansing oils, cleansing milks have a lower surfactant content and are relatively mild, but generally have a low oil content and poor cleansing ability, and are not easy to remove makeup products such as liquid eyeliners. Facial cleansers with cleansing functions seem to be more convenient to use compared with cleansing milks. For example, patent document CN109966161A provides a high-oil-content facial cleanser and a preparation method thereof, which are made of the following components in parts by weight: 10-20 parts of fatty acids, 10-30 parts of emollient oils, 5-12 parts of glycerol, 8-12 parts of acrylate / ceteth-25 methacrylate copolymer, 1-3 parts of glyceryl stearate, 4-6 parts of potassium hydroxide, 0.5-2 parts of auxiliary materials, and 10-30 parts of water. The auxiliary materials include preservatives, chelating agents, and film-forming agents; the fatty acids are C12-C18 acids; the emollient oils are mineral oils or vegetable oils. Although this facial cleanser has a high oil content, it uses a soap-based system. Since the soap-based system generally has a high pH and strong irritation, it is easy to cause over-cleaning and skin sensitivity. Summary of the Invention

[0003] In order to solve the problems existing in the existing cleansing products, through the compounding and selection of the emulsifier composition in the present application, it is possible to keep the cleansing cosmetic having a good cleansing effect and stability even under the condition of high oil content without using a soap-based system, and the usage amount of the emulsifier composition is reduced compared with the existing cleansing products, thereby reducing the irritation of the cleansing product and the sensitization to the skin.

[0004] The technical solution of the present application is as follows:

[0005] 1. An emulsifier composition, comprising an emulsifier and a co-emulsifier,

[0006] The emulsifier comprises a combination of Class A emulsifiers and Class B emulsifiers or Class C emulsifiers.

[0007] The Class A emulsifiers are selected from one or more of PEG-100 stearate, PEG-7 glyceryl cocoate, ceteth-25, PEG-20 glyceryl triisostearate, PEG-5 glyceryl triisostearate, PEG-7 caprylic / capric glycerides, and PEG-25 stearate,

[0008] The emulsifier of type B is selected from one or more of glyceryl stearate, glyceryl isostearate, polyglyceryl-3 methylglucose distearate, and glyceryl stearate citrate.

[0009] The emulsifier of type C is selected from PEG-6 glyceryl isostearate and PEG-8 glyceryl isostearate.

[0010] 2. The emulsifier composition according to item 1.

[0011] The mass ratio of the emulsifier of type A to the emulsifier of type B is (0.5-12):1.

[0012] 3. The emulsifier composition according to any one of items 1-2.

[0013] The co-emulsifier includes one or more of lipopeptide biosurfactants, amino acid surfactants, and phosphate ester salt anionic surfactants.

[0014] 4. The emulsifier composition according to any one of items 1-3, wherein the mass ratio of the emulsifier to the co-emulsifier is (10-150):1.

[0015] 5. Application of the emulsifier composition according to any one of items 1-4 in cleansing cosmetics.

[0016] 6. The application according to item 5, wherein the cleansing cosmetics include one or more of cleansing milk, cleansing balm, and facial cleanser.

[0017] 7. A cleansing cosmetic, which comprises the emulsifier composition according to any one of items 1-4;

[0018] Preferably,

[0019] Relative to 100 parts by weight of the cleansing cosmetic, the emulsifier composition is 3-10 parts by weight.

[0020] 8. The cleansing cosmetic according to item 7.

[0021] The cleansing cosmetic further comprises oil and polyol;

[0022] Preferably,

[0023] Relative to 100 parts by weight of the cleansing cosmetic, the oil is 5-45 parts by weight and the polyol is 5-20 parts by weight.

[0024] 9. A method for preparing the cleansing cosmetic according to item 7 or 8, which comprises the following steps:

[0025] Preparation of the aqueous phase: The aqueous phase includes polyols and co-emulsifiers;

[0026] Preparation of the oil phase: The oil phase includes oils and fats and emulsifiers;

[0027] Homogenize the aqueous phase and the oil phase to obtain the cleansing cosmetic.

[0028] Compared with the prior art, the beneficial effects of the present application are at least reflected in the following aspects:

[0029] 1. The cleansing cosmetic of the present application still ensures the stability of the cleansing cosmetic and a good makeup-removing effect while using a low content of the emulsifier composition and a high content of oils and fats.

[0030] 2. The cleansing cosmetic of the present application has low irritation and low skin sensitization due to having a low content of the emulsifier composition (surfactant). Description of the Drawings

[0031] Figure 1 It is a comparative diagram of makeup-removing effects; where Figure 1 "1" in it represents the makeup-removing milk prepared in Example 1, "2" represents commercially available sample 1, "3" represents commercially available sample 2, and "4" represents commercially available sample 3. Detailed Embodiments

[0032] The following described embodiments will explain the present application in detail. Although specific embodiments of the present application are shown, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to be able to fully convey the scope of the present application to those skilled in the art.

[0033] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in terms, but by the difference in functions of the components. As mentioned throughout the specification and claims, "comprising" or "including" is an open-ended term and should be interpreted as "including but not limited to". The subsequent description of the specification is the preferred embodiment for implementing the present application, but the description is for the purpose of the general principle of the specification and is not used to limit the scope of the present application. The protection scope of the present application shall be defined by the appended claims.

[0034] The present application provides an emulsifier composition, including an emulsifier and a co-emulsifier, wherein the emulsifier includes a combination of Class A emulsifiers and Class B emulsifiers or Class C emulsifiers,

[0035] The class A emulsifiers are selected from one or more of PEG - 100 stearate, PEG - 7 glyceryl cocoate, behenyl alcohol polyether - 25, PEG - 20 glyceryl triisostearate, PEG - 5 glyceryl triisostearate, PEG - 7 caprylic / capric glycerides, and PEG - 25 stearate,

[0036] The class B emulsifiers are selected from one or more of glyceryl stearate, glyceryl isostearate, polyglyceryl - 3 methylglucose distearate, and glyceryl stearate citrate,

[0037] The class C emulsifiers are selected from PEG - 6 glyceryl isostearate and PEG - 8 glyceryl isostearate.

[0038] The class A emulsifiers used in this application have the functions of emulsification, foaming, and detergency, and are inexpensive. Therefore, the class A emulsifiers are commonly used non - ionic surfactants in cosmetics production or industrial production.

[0039] The class B emulsifiers used in this application are used as a mild skin - feel regulator and emulsifier, but their emulsifying performance is relatively weak.

[0040] The class C emulsifiers used in this application combine the functions of class A emulsifiers and class B emulsifiers.

[0041] In some embodiments of this application, the emulsifier composition is composed of class A emulsifiers, class B emulsifiers, and co - emulsifiers.

[0042] In some embodiments of this application, the emulsifier composition is composed of class C emulsifiers and co - emulsifiers.

[0043] In some embodiments of this application, the mass ratio of the class A emulsifiers to the class B emulsifiers is (0.5 - 12):1, preferably (1 - 5):1;

[0044] For example, the mass ratio of the class A emulsifiers to the class B emulsifiers can be 0.5:1, 0.6:1, 1:1, 1.25:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, 5.5:1, 6:1, 6.5:1, 7:1, 7.5:1, 8:1, 8.5:1, 9:1, 9.5:1, 10:1, 11:1, 12:1 or any range therebetween.

[0045] In some embodiments of the present application, the co-emulsifier includes one or more of lipopeptide biosurfactants, amino acid surfactants, and phosphate ester anionic surfactants. When there are two of them, they can be lipopeptide biosurfactants and amino acid surfactants, lipopeptide biosurfactants and phosphate anionic surfactants, or amino acid surfactants and phosphate ester anionic surfactants.

[0046] Lipopeptide biosurfactants are lipopeptide compounds with surface activity secreted during the metabolic process when microorganisms are cultured under certain conditions. These active substances have a unique amphiphilic molecular structure, with the hydrophilic group composed of short peptides or amino acids and the hydrophobic group composed of fatty acids. Representative lipopeptides include Surfactin, Lichenysin, Fengycin, Iturin, Mycosubtilin, Bacillomycin, etc.

[0047] Amino acid surfactants are a new type of green and environmentally friendly surfactant derived from renewable resources. Substances in which the hydrogen atom of the amino group on the amino acid is replaced by a long-chain alkyl group have low toxicity and side effects, mild performance, low irritation, and good biodegradability. For example, sodium stearoyl glutamate, sodium cocoyl glutamate, disodium cocoyl glutamate, sodium lauroyl glutamate, TEA salt of cocoyl glutamate, potassium cocoyl glutamate, sodium cocoyl glycinate, potassium cocoyl glycinate, etc.

[0048] Phosphate ester anionic surfactants are a type of phosphorus-containing surfactants, including alkyl polyoxyethylene ether phosphate esters and alkyl phosphate esters, which have good antistatic, emulsifying, rust-proof, and dispersing properties. For example, alkyl phosphate ester anionic surfactants, fatty alcohol (alkylphenol) polyoxyethylene ether phosphate ester anionic surfactants, alkylolamide phosphate ester anionic surfactants, imidazoline phosphate ester anionic surfactants, silicone phosphate anionic surfactants, etc. As a specific example, it can be potassium cetyl phosphate, etc.

[0049] In some embodiments of the present application, the lipopeptide biosurfactant includes Surfactin. Surfactin is a general term for a series of cyclic lipopeptides with a similar basic structure. Its basic structure is a cyclic lipopeptide formed by the binding of b-hydroxy fatty acid and polypeptide through an ester bond. This peptide contains 7 amino acids, and the Glu (glutamic acid) at the first position and Asp (aspartic acid) at the fifth position are acidic amino acids, which makes the entire Surfactin molecule negatively charged and easy to form salts, such as sodium subtilisin.

[0050] In some embodiments of the present application, the mass ratio of the emulsifier to the co-emulsifier is (10 - 150):1. For example, the mass ratio of the emulsifier to the co-emulsifier can be 150:1, 140:1, 130:1, 120:1, 110:1, 100:1, 90:1, 80:1, 70:1, 60:1, 50:1, 40:1, 30:1, 20:1, 10:1 or any range therebetween.

[0051] The present application provides an application of the above emulsifier composition in cleansing cosmetics.

[0052] In some embodiments of the present application, the cleansing cosmetics can be common cleansing products in the field of cosmetics, such as makeup remover milk, makeup remover cream, facial cleanser, etc.

[0053] The present application provides a cleansing cosmetic comprising the above emulsifier composition.

[0054] In some embodiments of the present application, relative to 100 parts by weight of the cleansing cosmetic, the emulsifier composition is 3 - 10 parts by weight;

[0055] For example, relative to 100 parts by weight of the cleansing cosmetic, the emulsifier composition can be 3 parts by weight, 3.5 parts by weight, 4 parts by weight, 4.5 parts by weight, 5 parts by weight, 5.5 parts by weight, 6 parts by weight, 6.5 parts by weight, 7 parts by weight, 7.5 parts by weight, 8 parts by weight, 8.5 parts by weight, 9 parts by weight, 9.5 parts by weight, 10 parts by weight or any range therebetween.

[0056] In some embodiments of the present application, the cleansing cosmetic further comprises oils and fats, polyhydric alcohols, etc.

[0057] In some embodiments of the present application, the oils and fats are commonly used oils and fats in the field of cosmetics, including but not limited to liquid oils and solid oils. The liquid oils are selected from one or more of avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, camellia flower oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, torreya grandis oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, and triglyceride. The solid oils are selected from one or more of cocoa butter, coconut oil, horse oil, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, palm kernel oil, lard, beef bone oil, wood wax kernel oil, hydrogenated oil, beef foot oil, wood wax, and hydrogenated castor oil. Those skilled in the art can freely select according to needs.

[0058] In some embodiments of the present application, the oil or fat is selected from one or more of triglyceride caprylate / caprate, isopropyl palmitate, ethylhexyl palmitate, isopropyl myristate, dicaprylyl carbonate, isononyl isononanoate, isododecane, mineral oil, petrolatum, hydrogenated polydecene, shea butter, jojoba esters 30, microalgae oil (triolein), jojoba oil, olive oil, sunflower seed oil, Limnanthes alba seed oil, and triglycerides of C10-18 fatty acids.

[0059] In some embodiments of the present application, examples of the polyol may include: diols (such as dipropylene glycol, 1,3-butanediol, ethylene glycol, trimethylene glycol, 1,2-butanediol, tetramethylene glycol, 2,3-butanediol, pentamethylene, 2-butene-1,4-diol, hexanediol, octanediol, etc.), triols (such as glycerol, trimethylolpropane, etc.), tetrols (such as dipentaerythritol, 1,2,6-hexanetriol, pentaerythritol, etc.), pentols (such as xylitol, triglycerol, etc.), hexols (such as sorbitol, mannitol, etc.), polyol polymers (such as diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerol, triglycerol, tetraglycerol, polyglycerol, etc.), dialkyl ethers of diols (such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc.), dialkyl ethers of diols (such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, etc.), diol ether esters (such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc.), monoalkyl ethers of glycerol (such as batyl alcohol, selachyl alcohol, etc.), sugar alcohols (such as maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch hydrolysate, maltose, starch hydrolysate reducing alcohol, etc.), polyacetals (Glysolid), tetrahydrofurfuryl alcohol, POE-tetrahydrofurfuryl alcohol, POP-butyl ether, POP·POE-butyl ether, tripropylene glycol glycerol ether, POP-glycerol ether, POP-glycerol ether phosphate, POP·POE-pentaerythritol ether, polyglycerol, etc.

[0060] In some embodiments of the present application, relative to 100 parts by weight of the cleansing cosmetic, the oil is 5 - 45 parts by weight and the polyol is 5 - 20 parts by weight;

[0061] For example, relative to 100 parts by weight of the cleansing composition, the oil can be 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight, 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight, 19 parts by weight, 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight, 30 parts by weight, 31 parts by weight, 30 parts by weight, 31 parts by weight, 32 parts by weight, 33 parts by weight, 34 parts by weight, 35 parts by weight, 36 parts by weight, 37 parts by weight, 38 parts by weight, 39 parts by weight, 40 parts by weight, 41 parts by weight, 42 parts by weight, 43 parts by weight, 44 parts by weight, 45 parts by weight or any range therebetween;

[0062] For example, relative to 100 parts by weight of the cleansing composition, the polyol can be 5 parts by weight, 5.5 parts by weight, 6 parts by weight, 6.5 parts by weight, 7 parts by weight, 7.5 parts by weight, 8 parts by weight, 8.5 parts by weight, 9 parts by weight, 9.5 parts by weight, 10 parts by weight, 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, 12 parts by weight, 12.5 parts by weight, 13 parts by weight, 13.5 parts by weight, 14 parts by weight, 14.5 parts by weight, 15 parts by weight, 15.5 parts by weight, 16 parts by weight, 16.5 parts by weight, 17 parts by weight, 17.5 parts by weight, 18 parts by weight, 18.5 parts by weight, 19 parts by weight, 19.5 parts by weight, 20 parts by weight or any range therebetween.

[0063] In some embodiments of the present application, the cleansing cosmetic may further contain other cosmetic ingredients that do not affect the technical problems to be solved by the present application. The other cosmetic ingredients may be, for example, active ingredients, including but not limited to whitening ingredients, moisturizing ingredients, repair ingredients, anti-aging ingredients, etc. For example, hyaluronic acid or its derivatives, vitamin C or its derivatives, vitamin A or its derivatives, folic acid or its derivatives, vitamin E or its derivatives, vitamin D or its derivatives, amino acids, carotenoids or carotene, uric acid or its derivatives, α-hydroxy acids, stilbenes and their derivatives, tranexamic acid, ectoine, dipotassium glycyrrhizinate, stearoyl glycyrrhetinate, vitamin E acetate, vitamin B3, vitamin C, ascorbyl glucoside, sodium ascorbyl phosphate, allantoin, paeoniflorin, asiaticoside, bisabolol, betaine, sorbitol, sodium pyrrolidone carboxylate, erythritol, hydrolyzed protein, and water-soluble extracts such as ginseng leaf and stem extract, ginseng seed extract, ginseng extract, bletilla striata extract, ampelopsis japonica extract, astragalus membranaceus extract, polygonatum sibiricum extract, wolfberry extract, peony extract, cistanche deserticola extract, black bean sprout extract, chickpea sprout extract, black sesame extract, black rice extract, aloe extract, seaweed extract, algae extract, snow lotus extract, peach blossom extract, green tea extract, seaweed extract, almond extract, hydrolyzed pearl solution, osmanthus extract, turmeric root extract, lotus extract, ganoderma lucidum extract, koji fermentation product-related, plant fermentation product-related, bean fermentation product-related, fungus-related, or a combination of two or more of them. The other cosmetic ingredients may be, for example, excipients used in the cosmetic field, including but not limited to preservatives, pH regulators, fragrances, etc.

[0064] The cleansing cosmetic described in the present application can carry a high content of oils and has good stability.

[0065] The cleansing cosmetic described in the present application is applicable to common oil systems in cosmetics such as polar oils, non-polar oils, and mixed vegetable oils. It enriches the diversity of the cosmetic system and has good stability.

[0066] The cleansing cosmetic described in the present application not only has a good makeup-removing effect but also has relatively good mildness and moisturizing properties.

[0067] The present application provides a preparation method of the above-mentioned cleansing cosmetic, which includes the following steps:

[0068] Prepare the aqueous phase: The aqueous phase includes polyols and co-emulsifiers.

[0069] Prepare the oil phase: The oil phase includes oils and emulsifiers.

[0070] Homogenize the aqueous phase and the oil phase to obtain the cleansing cosmetic.

[0071] In some embodiments of the present application, the preparation method of the above-mentioned cleansing cosmetic comprises the following steps:

[0072] Prepare the aqueous phase: The aqueous phase is a mixture composed of a polyol, a co-emulsifier, and water;

[0073] Prepare the oil phase: The oil phase is a mixture composed of an oil and an emulsifier;

[0074] Homogenize the aqueous phase and the oil phase to obtain the cleansing cosmetic.

[0075] If other cosmetic ingredients, such as active ingredients or excipients, are contained in the cleansing cosmetic, they can be mixed with the polyol and the co-emulsifier in the step of preparing the aqueous phase.

[0076] In one embodiment, the homogenization comprises two homogenizations. During the first homogenization, homogenization can be carried out at a rotational speed of 5000 - 7000 rpm, and homogenization is stopped after 2 - 5 minutes; during the second homogenization, homogenization is carried out under high pressure at a pressure of 400 - 1100 bar. Preferably, the homogenization cycle is 2 - 5 times.

[0077] When the emulsifier composition of the present application is used in cleansing cosmetics, it has good stability, and no phenomena of delamination or becoming white and thick occur. Compared with commercially available makeup remover milks, it has excellent makeup removal effects. Due to the low content of the emulsifier composition (surfactant) in the cleansing cosmetics of the present application, they have low irritation and low skin sensitization.

[0078] Examples

[0079] The present application generally and / or specifically describes the materials and test methods used in the experiments. In the following examples, unless otherwise specifically stated, % represents wt%, that is, weight percentage. Reagents or instruments for which the manufacturer is not indicated are all conventional reagent products that can be obtained commercially.

[0080] Example 1

[0081] Mix 16 g of polyol (8 g of glycerol and 8 g of 1,3-butanediol), 0.05 g of co-emulsifier (subtilisin carlsberg) and 45.95 g of water, and heat (heat to 80 °C) to obtain Phase A (aqueous phase);

[0082] Mix 30 g of oil (isocetane), 3 g of PEG-7 glyceryl cocoate and 3 g of polyglyceryl-3 methylglucose distearate, and heat (heat to 80 °C) to obtain Phase B (oil phase), where the mass ratio of Class A emulsifier to Class B emulsifier is 1:1;

[0083] Mix phase A and phase B (mix at 80 °C), add water to make up the volume to 100 mL, and perform homogenization (homogenize at a rotational speed of 5000 rpm and stop homogenization after 2 min; in the second homogenization, perform high-pressure homogenization 2 times at a pressure of 500 bar) to obtain a makeup remover lotion.

[0084] The method for measuring the average particle size of the makeup remover lotion is as follows: Use a LitesizerTM 500 particle scattering instrument. Based on the principle of dynamic light scattering, dilute the sample to a concentration of 1% and then measure the particle size. The particle size measurement is based on the principle of dynamic light scattering, and use a LitesizerTM 500 particle scattering instrument to characterize the results of the sample. The average particle size of the makeup remover lotion is 80 - 240 nm.

[0085] Example 2

[0086] The difference between Example 2 and Example 1 is only that in phase B, the addition amount of PEG-7 glyceryl cocoate is 4.5 g, the addition amount of polyglyceryl-3 methylglucose distearate is 1.5 g, and the mass ratio of type A emulsifier to type B emulsifier is 3:1, and the other conditions are the same.

[0087] Example 3

[0088] The difference between Example 3 and Example 2 is only that the type A emulsifier is 3 g of PEG-7 glyceryl cocoate and 1.5 g of PEG-100 stearate, and the other conditions are the same.

[0089] Example 4

[0090] The difference between Example 4 and Example 2 is only that the amount of oil used is 40 g, and the other conditions are the same.

[0091] Example 5

[0092] The difference between Example 5 and Example 2 is only that polyglyceryl-3 methylglucose distearate is replaced with glyceryl stearate, and the other conditions are the same.

[0093] Example 6

[0094] The difference between Example 6 and Example 2 is only that the amount of PEG-7 glyceryl cocoate used is 2.25 g, the amount of polyglyceryl-3 methylglucose distearate used is 3.73 g, and the mass ratio of type A emulsifier to type B emulsifier is 0.6:1, and the other conditions are the same.

[0095] Example 7

[0096] Example 7 is only different from Example 2 in that the dosage of PEG-7 glyceryl cocoate is 3.3 g, the dosage of polyglyceryl-3 methylglucose distearate is 2.7 g, and the mass ratio of Class A emulsifier to Class B emulsifier is 1.2:1, and the remaining conditions are the same.

[0097] Example 8

[0098] Example 8 is only different from Example 2 in that the dosage of PEG-7 glyceryl cocoate is 5.46 g, the dosage of polyglyceryl-3 methylglucose distearate is 0.54 g, and the mass ratio of Class A emulsifier to Class B emulsifier is 10:1, and the remaining conditions are the same.

[0099] Example 9

[0100] Example 9 is only different from Example 2 in that the polyol is 8 g of diglycerol, and the remaining conditions are the same.

[0101] Example 10

[0102] Example 10 is only different from Example 2 in that the subtilisin lipopeptide sodium is 0.5 g, and the remaining conditions are the same.

[0103] Example 11

[0104] Example 11 is only different from Example 2 in that the emulsifier used is 6 g of PEG-8 glyceryl isostearate, and the remaining conditions are the same.

[0105] Example 12

[0106] Example 12 is only different from Example 2 in that the co-emulsifiers used are 0.025 g of sodium stearoyl glutamate and 0.025 g of potassium anforsu, and the remaining conditions are the same.

[0107] Example 13

[0108] Example 13 is only different from Example 2 in that the oil is 30 g of caprylic / capric triglyceride, and the remaining conditions are the same.

[0109] Comparative Example 1

[0110] Comparative Example 1 is only different from Example 1 in that in Phase B, 30 g of oil (isoeicosane) and 6 g of polyglyceryl-3 methylglucose distearate (heated to 80 °C) are used to obtain Phase B, which only contains Class B emulsifier, and the remaining conditions are the same.

[0111] Comparative Example 2

[0112] Comparative Example 2 is only different from Example 1 in that in Phase B, 30 g of oil (isoeicosane) and 6 g of PEG-7 glyceryl cocoate are heated (heated to 80 °C) to obtain Phase B, which only contains Class A emulsifier, and the remaining conditions are the same.

[0113] Comparative Example 3

[0114] The difference between Comparative Example 3 and Example 1 is only that in Phase B, 30 g of oil (isocetane) and 6 g of PEG-100 stearate are heated (heated to 80 °C) to obtain Phase B, which contains only Class A emulsifiers, and the other conditions are the same.

[0115] Comparative Example 4

[0116] The difference between Comparative Example 4 and Example 1 is only that in Phase B, 30 g of oil (isocetane) and 6 g of sucrose stearate are heated (heated to 80 °C) to obtain Phase B, which contains only Class B emulsifiers, and the other conditions are the same.

[0117] Comparative Example 5

[0118] The difference between Comparative Example 5 and Example 2 is only that in Phase B, polyglyceryl-3 methylglucose distearate is replaced with glycerol citrate, and the other conditions are the same.

[0119] Comparative Example 6

[0120] The difference between Comparative Example 6 and Example 2 is only that in Phase B, polyglyceryl-3 methylglucose distearate is replaced with sucrose stearate, and the other conditions are the same.

[0121] Table 1

[0122]

[0123]

[0124] Stability of Experimental Example 1

[0125] The samples obtained from the above examples and comparative examples were subjected to stability investigation for 1 week in a constant temperature incubator at room temperature (RT), -18 °C to 48 °C freeze-thaw cycle (FT), 48 °C, 4 °C, and -18 °C. The stability investigation results are shown in Table 2.

[0126] Table 2

[0127] Oil content RT FT 4℃ 48℃ -18℃ Example 1 30％ √ √ √ √ √ Example 2 30％ √ √ √ √ √ Example 3 30％ √ √ √ √ √ Example 4 40％ √ √ √ √ √ Example 5 30％ √ √ √ √ √ Example 6 30％ √ √ √ √ √ Example 7 30％ √ √ √ √ √ Example 8 30％ √ √ √ √ √ Example 9 30％ √ √ √ √ √ Example 10 30％ √ √ √ √ √ Example 11 30％ √ √ √ √ √ Example 12 30％ √ √ √ √ √ Example 13 30％ √ √ √ √ √ Comparative Example 1 30％ √ Become solid √ √ Become solid Comparative Example 2 30％ Layering Layering Layering Layering Layering Comparative Example 3 30％ √ Turn white and thicken √ √ Turn white and thicken Comparative Example 4 30％ √ Become solid √ √ Become solid Comparative Example 5 30％ Not emulsified Not emulsified Not emulsified Not emulsified Not emulsified Comparative Example 6 30％ Layering Layering Layering Layering Layering

[0128] The samples prepared in Examples 1-13 all had good stability. The samples prepared by adding only Class B emulsifiers in Comparative Examples 1 and 4 became solid under the -18 °C to 48 °C freeze-thaw cycle (FT) and at -18 °C. The samples prepared by adding only Class A emulsifiers in Comparative Examples 2-3 showed layering or becoming white and thickening. The replacement of the type of Class B emulsifier in Comparative Examples 5-6 also showed unemulsified or layered phenomena.

[0129] Removing Makeup Performance of Experimental Example 2

[0130] The cleansing milk prepared in Example 1 of the present application was compared with 3 commercially available cleansing milks in terms of cleansing ability. The same application method was used during the comparison process, and it was applied 70 circles. The comparison results are as follows Figure 1 as shown

[0131] Among them, the batch number of commercially available sample 1 is 047902096, the batch number of commercially available sample 2 is 40R003, and the batch number of commercially available sample 3 is 210824J3

[0132] The cleansing abilities of different examples and comparative examples are shown in Table 3 below

[0133] The cleansing effects of different samples were preliminarily evaluated by means of subjective human evaluation. Taking the cleansing effect of the optimized formula as the evaluation standard, the specific evaluation method is as follows

[0134] Select 5 professional personnel with experience in cosmetics evaluation to score and evaluate the cleansing effects of the samples. Among them, each sample obtained from the examples and comparative examples was respectively filled in the same sub-bottles for unified evaluation

[0135] Specific method for sample evaluation

[0136] (1) The evaluators wash their hands clean with clear water and dry the water with a towel

[0137] (2) Use an eyeliner pen to draw a "*" pattern with a diameter of 2 cm on the arm and wait for 10 minutes for the eyeliner liquid to dry

[0138] (3) Use a dropper to take 0.5 g of the sample and place it at the "*" area, and stop massaging in circles in the same direction after 70 circles

[0139] (3) Observe the residual eyeliner liquid remaining on the arm after massaging in circles, and score according to the standard of 10 with no residue and 0 with complete residue of eyeliner liquid

[0140] (4) The final cleansing effect of the sample is determined according to the scoring results of 5 people. The higher the score, the better the cleansing effect. Finally, take the average value of 5 people as the final result of the sample, and the results are shown in Table 3 below

[0141] Table 3

[0142] Makeup removing effect Example 1 5 Example 2 6 Example 3 8 Example 4 6 Example 5 6 Example 6 5 Example 7 6 Example 8 8 Example 9 6 Example 10 6 Example 11 6 Example 12 6 Example 13 6 Comparative Example 1 4 Comparative Example 2 - Comparative Example 3 7 Comparative Example 4 6 Comparative Example 5 - Comparative Example 6 -

[0143] As shown in Table 3, Examples 1-13 all showed excellent cleansing effects, while the cleansing effects of Comparative Examples 1, 2, 5, and 6 were poor

[0144] Although the present case has been disclosed above by way of embodiments, it is not intended to limit the present case. Any person having ordinary knowledge in the technical field to which the present case pertains may make some modifications and refinements without departing from the spirit and scope of the present case. Therefore, the scope of protection of the present case shall be subject to that defined by the appended patent application scope.

Claims

1. An emulsifier composition, characterized in that it is composed of an emulsifier and a co-emulsifier, the emulsifier is selected from the combination of Class A emulsifiers and Class B emulsifiers or Class C emulsifiers, the Class A emulsifiers are selected from one or two of PEG-100 stearate and PEG-7 glyceryl cocoate, the Class B emulsifiers are selected from one or two of glyceryl stearate and polyglyceryl-3 methylglucose distearate, the Class C emulsifier is selected from PEG-8 glyceryl isostearate; the mass ratio of the Class A emulsifier to the Class B emulsifier is (0.5~12):1; the co-emulsifier is selected from lipopeptide biosurfactants; the mass ratio of the emulsifier to the co-emulsifier is (10-150):

1.

2. Use of the emulsifier composition according to claim 1 in cleansing cosmetics.

3. According to the use of claim 2, the cleansing cosmetics include one or more of cleansing milk, cleansing balm, and facial cleanser.

4. A cleansing cosmetic, characterized in that it includes the emulsifier composition according to claim 1.

5. According to the cleansing cosmetic of claim 4, characterized in that relative to 100 parts by weight of the cleansing cosmetic, the emulsifier composition is 3-10 parts by weight.

6. According to the cleansing cosmetic of claim 4, characterized in that the cleansing cosmetic further includes oils and polyols.

7. According to the cleansing cosmetic of claim 6, characterized in that relative to 100 parts by weight of the cleansing cosmetic, the oil is 5-45 parts by weight and the polyol is 5-20 parts by weight.

8. A method for preparing the cleansing cosmetic according to any one of claims 4-7, which includes the following steps: Preparing an aqueous phase: the aqueous phase includes polyols and a co-emulsifier; Preparing an oil phase: the oil phase includes oils and an emulsifier; Homogenizing the aqueous phase and the oil phase to obtain the cleansing cosmetic.

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