Natural plant cleansing oil and preparation method thereof

Abstract

The invention discloses natural plant cleansing oil and a preparation method thereof. The invention relates to natural plant cleansing oil, which comprises the following components in percentage by weight: 20.0-90.0% of an oil phase, 20.0-90.0% of an oil phase, 0.1-1.0% of an oil phase, 0.1-1.0% of an oil phase, and 1.0% to 30.0% of an emulsifier; 0.1% to 5.0% of polyhydric alcohol; 0.01%-5.0% of an auxiliary agent; 0.01%-0.5% of a preservative; and the balance of water. The oil phase and the emulsifier are both derived from natural plants; the polyhydric alcohol is C3-C14 long carbon chain diol; the auxiliary agent comprises cyclodextrin and cucurbituril; wherein the interfacial tension of the oil phase and the polyol is 0.5 to 10 mN / m; the saponification value of the oil phase is 100 to 200 mgKOH / g. According to the embodiment of the invention, the natural plant cleansing oil has the characteristics of high stability, good emulsifying effect and mildness.

Description

Technical Field

[0001] The present application belongs to the technical field of daily chemical industry, and in particular relates to a natural plant makeup remover oil and a preparation method thereof. Background Art

[0002] Makeup products have become a common product system for improving personal image, but if makeup products are left on the face for a long time or not cleaned thoroughly, it will lead to lipid deposition on the face and cause skin sensitivity, inflammation and acne. On the other hand, excessive cleansing can also lead to excessive sebum damage, which in turn damages the skin barrier. Traditional makeup remover oil is suitable for removing daily light makeup, sunscreen residue, and dissolving oily residues of makeup and sebum secretions in pores.

[0003] The makeup remover oil products on the market have problems such as large amount of residue after makeup removal, high skin irritation, poor mildness, and poor skin care after washing. Summary of the invention

[0004] The embodiment of the present application provides a natural plant makeup remover oil and a preparation method thereof, which has the characteristics of high stability, good emulsification effect and mildness.

[0005] In a first aspect, an embodiment of the present application provides a natural plant makeup remover oil.

[0006] A natural plant makeup remover oil, the natural plant makeup remover oil comprising, by weight percentage:

[0007]

[0008] The rest is water;

[0009] The oil phase and emulsifier are all from natural plants;

[0010] The polyol is a C3-C14 long carbon chain diol;

[0011] Adjuvants include cyclodextrins and cucurbiturils;

[0012] Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m;

[0013] The saponification value of the oil phase is 100-200 mgKOH / g.

[0014] In any embodiment of the present application, the natural plant cleansing oil comprises, by weight percentage:

[0015]

[0016] The rest is water;

[0017] The oil phase and emulsifier are all from natural plants;

[0018] The polyol is a C3-C14 long carbon chain diol;

[0019] Adjuvants include cyclodextrins and cucurbiturils;

[0020] Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m;

[0021] The saponification value of the oil phase is 100-200 mgKOH / g.

[0022] In any embodiment of the present application, the oil phase includes an oil phase with a high saponification value, an oil phase with a medium saponification value, and an oil phase with a low saponification value;

[0023] Among them, the high saponification value is greater than 200 mgKOH / g;

[0024] The medium saponification value is 180-200 mgKOH / g;

[0025] Low saponification value is less than 180mgKOH / g;

[0026] The weight ratio of the oil phase with high saponification value, the oil phase with medium saponification value and the oil phase with low saponification value is 1:1-5:1-3.

[0027] In any embodiment of the present application, the oil phase includes at least one of olive oil, castor oil, palm oil, palm kernel oil, coconut oil, sesame oil, safflower oil, almond oil, avocado oil, evening primrose oil, rice bran oil, macadamia seed oil, wheat germ oil, argan oil, rice germ oil, almond oil, olive oil, corn germ oil, peach kernel oil, safflower oil, grape seed oil, peony seed oil, linseed oil, white meadowfoam seed oil and jojoba seed oil.

[0028] In any embodiment of the present application, the emulsifier includes at least one of polyglyceryl-2 oleate, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-2 sesquioleate, polyglyceryl-2 triisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 stearate, polyglyceryl-3 diisostearate, polyglyceryl-3 dioleate, polyglyceryl-4 laurate, polyglyceryl-4 oleate, polyglyceryl-4 isostearate, polyglyceryl-6 oleate, polyglyceryl-6 distearate, polyglyceryl-6 stearate, sophorolipids, rhamnolipids, trehalose lipids, lipopeptides, lipoproteins, fatty acids, phospholipids and neutral lipids.

[0029] In any embodiment of the present application, the polyol includes at least one of 1,3-propylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,3-pentanediol, 1,6-hexanediol, glycerol and 1,8-nonanediol and isoprene glycol.

[0030] In any embodiment of the present application, the auxiliary agent includes at least one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin and cucurbituril.

[0031] In any embodiment of the present application, the preservative includes at least one of glycols, ketones and polar amphiphilic substances.

[0032] In any embodiment of the present application, the diols include at least one of 1,2-pentanediol and 1,2-hexanediol.

[0033] In any embodiment of the present application, the ketone includes p-hydroxyacetophenone.

[0034] In any embodiment of the present application, the polar amphiphilic substance includes ethylhexylglycerin.

[0035] In a second aspect, an embodiment of the present application provides a method for preparing a natural plant makeup remover oil.

[0036] The preparation method of the natural plant cleansing oil comprises the following steps:

[0037] Screening polyols and oil phases with interfacial tensions between 0.5 and 10 mN / m;

[0038] The materials containing the oil phase, the emulsifier and the adjuvant are mixed at a preset temperature to obtain an emulsion phase component;

[0039] The materials containing polyol, emulsifier and auxiliary agent are mixed at a preset temperature to obtain a lactic alcohol phase component;

[0040] adding the emulsion alcohol phase component to the emulsion oil phase component under stirring to obtain an oleyl alcohol-emulsifier component;

[0041] After the oleyl alcohol-emulsifier component is cooled, a preservative is added, and after further cooling, a natural plant cleansing oil is obtained.

[0042] In any embodiment of the present application, in the step after mixing the materials containing the oil phase, the emulsifier and the auxiliary agent at a preset temperature, the weight ratio of the oil phase to the emulsifier is 3-5:1.

[0043] In any embodiment of the present application, in the step after mixing the materials containing the oil phase, the emulsifier and the auxiliary agent at a preset temperature, the preset temperature is 40-70°C.

[0044] In any embodiment of the present application, in the step of mixing the materials containing the polyol, the emulsifier and the auxiliary agent at a preset temperature, the weight ratio of the polyol to the emulsifier is 2-5:1.

[0045] In any embodiment of the present application, in the step after mixing the materials containing polyol, emulsifier and auxiliary agent at a preset temperature, the preset temperature is 40-70°C.

[0046] In any embodiment of the present application, in the step of adding the emulsion phase component to the emulsion phase component under stirring, the weight ratio of the emulsion phase component to the emulsion phase component is 1:5-6.

[0047] In any embodiment of the present application, in the step of adding the lactol phase component to the emulsion oil phase component under stirring, the stirring condition is stirring at a rotation speed of 300-600 rpm for 4-6 hours.

[0048] In any embodiment of the present application, in the step of cooling the oleyl alcohol-emulsifier component to 40-60° C., the cooling is performed with stirring at a speed of 200-800 r / min.

[0049] In any embodiment of the present application, after cooling the oleyl alcohol-emulsifier component to 40-60° C., adding a preservative, and then cooling to 20-30° C., the step further includes adding an antioxidant and a flavor.

[0050] The natural plant makeup remover oil and preparation method of the embodiments of the present application, on the one hand, by adjusting the interfacial tension between the oil phase, polyols, and emulsifiers and the amount of the emulsifier, the makeup remover oil forms a homogeneous system, thereby dissolving oil in oil, thereby better removing makeup and improving skin feel; on the other hand, the saponification value of the natural plant oil is 100-200 mgKOH / g, and its high content of oleic acid and linoleic acid can reduce irritation to the skin and provide gentle skin care. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0052] Figure 1 The preparation flow chart of this application;

[0053] Figure 2 These are pictures of the results of the chicken embryo chorioallantoic membrane experiment, where a is the Zhuben Qinghuan Yugan Refreshing Plant Makeup Remover Oil model purchased from Zhuben; b is the makeup remover oil in Example 1, and c is the L'Oreal Flower Extract Cleansing Oil model purchased from L'Oreal.

[0054] Figure 3 The ES scores of the cleansing oil in Example 1 and commercially available cleansing oils are given.

[0055] Figure 4 These are microscopic photos of emulsified particles of the makeup remover oil in Example 1 of the present application, commercially available product 1, and commercially available product 2. DETAILED DESCRIPTION

[0056] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present application may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0058] Hereinafter, the embodiments of the natural plant makeup remover oil and preparation method of the present application are specifically disclosed in detail with appropriate reference to the accompanying drawings. However, there may be cases where unnecessary detailed descriptions are omitted. For example, there are cases where detailed descriptions of well-known matters and repeated descriptions of actually the same structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the drawings and the following description are provided for those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0059] "Scope" disclosed in the present application is limited in the form of lower limit and upper limit, and a given range is limited by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundary of a special range. The scope limited in this way can be including end values ​​or not including end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a scope. For example, if the scope of 60-120 and 80-110 is listed for a specific parameter, it is understood that the scope of 60-110 and 80-120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following scope can be all expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In the present application, unless otherwise specified, the numerical range "ab" represents the abbreviation of any real number combination between a and b, wherein a and b are real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0060] If not otherwise specified, all embodiments and optional embodiments of the present application may be combined with each other to form new technical solutions, and such technical solutions should be deemed to be included in the disclosure of the present application.

[0061] Unless otherwise specified, all technical features and optional technical features of the present application may be combined with each other to form new technical solutions, and such technical solutions should be deemed to be included in the disclosure of the present application.

[0062] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0063] Unless otherwise specified, the raw materials in the examples of this application were purchased through commercial channels.

[0064] Unless otherwise specified, this application adopts conventional test methods or test methods recommended by the instrument.

[0065] The main types of oils used in existing makeup remover formulas are mineral oils and synthetic emulsifiers. Since the oils used in most cosmetics are also mineral oils, they are similarly soluble in the same oils in makeup remover oils, thus achieving the purpose of makeup removal.

[0066] Mineral oil is the earliest oil used in the modern cosmetics industry. It is a high-purity mixture of liquid alkanes and cycloalkanes extracted from petroleum. Mineral oils are highly inert and have good sealing properties. Long-term use of mineral oils can easily form a closed mineral oil on the skin surface. If this oil exists on the skin surface for a long time, it will affect the normal function and health of the skin surface. Therefore, long-term use of makeup removers prepared with mineral oils can cause acne and clog pores. Some mineral oils from unreliable sources even contain potential carcinogens such as polycyclic aromatic hydrocarbons. These harmful substances can cause allergies and other symptoms. What's more, long-term cumulative use can lead to some chronic skin diseases.

[0067] Therefore, mineral oils are easy to leave residues and are very irritating to the skin. People with sensitive skin may suffer from acne or skin sensitivity if they do not remove makeup thoroughly for a long time or if the makeup remover oil is not emulsified thoroughly. This leads to problems such as large residues after makeup removal, high skin irritation, poor mildness, and poor skin care after washing in makeup remover oil products on the market.

[0068] Based on this, the present application mainly focuses on the efficient and gentle cleaning of makeup products attached to the skin, and then develops a new type of mild makeup remover oil product with high stability and good emulsification effect from pure natural sources.

[0069]

Natural plant cleansing oil

[0070] A natural plant makeup remover oil, the natural plant makeup remover oil comprising, by weight percentage:

[0071]

[0072] The rest is water;

[0073] The oil phase and emulsifier are all from natural plants;

[0074] The polyol is a C3-C14 long carbon chain diol;

[0075] Adjuvants include cyclodextrins and cucurbiturils;

[0076] Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m;

[0077] The saponification value of the oil phase is 100-200 mgKOH / g.

[0078] Interfacial tension (IFT) is defined as the work that must be done to increase the size of the interface between two completely immiscible phases. It is mainly related to liquid-liquid and liquid-solid phase boundaries. At the phase interface, the interaction between molecules in the same phase is greater than that between molecules in different phases. Therefore, there are fewer interacting molecules at the interface than in the bulk phase. If there is no external force, the interface where the molecules are located tends to form a minimum interface, and work must be done on it to increase the size of the interface. In addition to being related to the characteristics of the two-phase substances, interfacial tension is also affected by many other factors, such as surfactants (emulsifiers). Surfactants can significantly reduce the surface / interfacial tension of solutions in aqueous solutions due to their amphiphilic structure of hydrophilic and lipophilic groups. There are many types of surfactants, in addition to conventional surfactants, there are also some natural surfactants or additives. The present application measures the interfacial tension between the oil and alcohol phases, analyzes the change in the interfacial tension and adjusts the interfacial tension by adding surfactants of different types and contents, so that the interfacial tension between the oil and the polyol is 0.5-10mN / m, thereby allowing the makeup remover oil to form a homogeneous system, and efficiently and cost-effectively screen out suitable oil phase and alcohol phase components, which are then compounded with a specific content of emulsifier to improve the makeup removal effect while improving the skin feel after makeup removal.

[0079] Traditionally, the number of milligrams of potassium hydroxide consumed by alkaline hydrolysis of 1g of oil is defined as the saponification value. It can be used as a measure of the average chain length of fatty acids in triglycerides, that is, a measure of the average molecular weight of triglycerides. The height of the saponification value indicates the size of the molecular weight of fatty acids in oils (i.e., the number of carbon atoms in fatty acids). The higher the saponification value, the smaller the molecular weight of the fatty acid, the stronger the hydrophilicity, and the loss of the characteristics of oils; the lower the saponification value, the larger the molecular weight of the fatty acid or contains more unsaponifiable matter, and the oil is close to solid and difficult to absorb. In this application, the saponification value of the oil phase is 100-200mgKOH / g, and its high content of oleic acid and linoleic acid has the effect of moisturizing the skin and treating inflammation, and can also inhibit sebum secretion. The vegetable oils and fats remaining on the skin surface after normal cleaning can form a good protective film on the skin surface, which can ensure the oil-water balance on the skin surface and resist external stimuli.

[0080] In some embodiments, the natural plant cleansing oil comprises, by weight percentage:

[0081]

[0082] The rest is water;

[0083] The oil phase and emulsifier are all from natural plants;

[0084] The polyol is a C3-C14 long carbon chain diol;

[0085] Adjuvants include cyclodextrins and cucurbiturils;

[0086] Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m;

[0087] The saponification value of the oil phase is 100-200 mgKOH / g.

[0088] The present application adopts an interfacial tension meter and an interfacial rheology-assisted method to adjust the interfacial tension between the three phases of natural oils, polyols and emulsifiers, so as to quickly obtain the optimal types and ranges for screening natural oils, polyols and emulsifiers, wherein the optimal range of the saponification value of vegetable oils is 100-200, the addition amount of polyols is 1%-5%, and the addition amount of emulsifiers is 10%-25%.

[0089] In some embodiments, the oil phase includes an oil phase with a high saponification value, an oil phase with a medium saponification value, and an oil phase with a low saponification value;

[0090] Among them, the high saponification value is greater than 200 mgKOH / g;

[0091] The medium saponification value is 180-200 mgKOH / g;

[0092] Low saponification value is less than 180mgKOH / g;

[0093] The weight ratio of the oil phase with high saponification value, the oil phase with medium saponification value and the oil phase with low saponification value is 1:1-5:1-3.

[0094] First, natural plant-derived oils are generally highly polar. In actual formula matching, it is necessary to consider the different saponification values ​​of plant oils and fats themselves and match them with three saponification values: high, medium and low. The main oils are medium-saponification-value plant oils. Second, different types of natural plant-derived oils have different cost-effectiveness. By matching oils with different saponification values, costs can be reduced.

[0095] In some embodiments, the oil phase includes at least one of olive oil, castor oil, palm oil, palm kernel oil, coconut oil, sesame oil, safflower oil, almond oil, avocado oil, evening primrose oil, rice bran oil, macadamia seed oil, wheat germ oil, argan oil, rice germ oil, almond oil, olive oil, corn germ oil, peach kernel oil, safflower oil, grape seed oil, peony seed oil, linseed oil, white meadowfoam seed oil and jojoba seed oil. The oil is selected to use a plant oil with good solubility in cosmetic oils and poor solubility in sebum. "Solubility" means: in the preparation of the makeup remover oil of the present application, an appropriate amount of emulsifier (appropriate amount means: the emulsifier added in the formula system of the present application is sufficient to complete the purpose of makeup removal and does not cause obvious irritation or adverse reactions) is added, and the emulsifier can be completely dissolved in the makeup remover oil system after stirring, and no precipitation is precipitated after standing. "Sebum solubility" means that after using the makeup remover oil of the present application, it can be similarly soluble in makeup, and can remove makeup after adding water to achieve the effect of dissolving and washing. Due to the different skin types of individuals, the amount of oil contained in facial skin cannot be accurately quantified. A common evaluation method is to use skin oil tape to measure the oil content before and after using the makeup remover oil, and indirectly evaluate the sebum solubility of the makeup remover oil.

[0096] In some embodiments, the emulsifier includes polyglycerol-2 oleate, polyglycerol-2 dipolyhydroxystearate, polyglycerol-2 sesquioleate, polyglycerol-2 triisostearate, polyglycerol-2 isostearate, polyglycerol-2 stearate, polyglycerol-3 diisostearate, polyglycerol-3 dioleate, polyglycerol-4 laurate, polyglycerol-4 oleate, polyglycerol-4 isostearate, polyglycerol-6 oleate, polyglycerol-6 distearate, polyglycerol-6 stearate, sophorolipids, rhamnolipids, trehalose lipids, lipopeptides, lipoproteins, fatty acids, phospholipids and at least one of neutral lipids. The emulsifier includes polyglycerol emulsifiers, and a variety of compounded natural emulsifiers can provide a good makeup removal effect. The emulsifier selects a natural source emulsifier with a small critical stacking parameter CPP. The critical stacking parameter CPP is not clearly defined and is related to the length of the hydrophobic carbon chain and the cross-section of the hydrophilic group.

[0097] In some embodiments, the polyol includes at least one of 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,5-pentanediol, 1,3-pentanediol, 1,6-hexanediol, glycerol, and 1,8-nonanediol isoprene glycol. The selection of the polyol needs to match the solubility and compatibility of the overall formulation.

[0098] In some embodiments, the auxiliary agent includes at least one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin and cucurbituril. The addition of the auxiliary agent can effectively improve the transparency of the cleansing oil system and the self-emulsification effect of the cleansing oil, and can also further improve the greasy skin feeling when using the cleansing oil, giving the product a refreshing and gentle use experience.

[0099]

Preparation method

[0100] The preparation method of the natural plant cleansing oil comprises the following steps:

[0101] Screening polyols and oil phases with interfacial tensions between 0.5 and 10 mN / m;

[0102] The materials containing the oil phase, the emulsifier and the adjuvant are mixed at a preset temperature to obtain an emulsion phase component;

[0103] The materials containing polyol, emulsifier and auxiliary agent are mixed at a preset temperature to obtain a lactic alcohol phase component;

[0104] adding the emulsion alcohol phase component to the emulsion oil phase component under stirring to obtain an oleyl alcohol-emulsifier component;

[0105] After the oleyl alcohol-emulsifier component is cooled to 40-60° C., a preservative is added, and then the component is cooled to 20-30° C. to obtain a natural plant cleansing oil.

[0106] By screening out specific oil phases and polyol types through interfacial tension, the makeup remover oil forms a homogeneous system, and suitable oil phase and alcohol phase components are screened out efficiently and at low cost.

[0107] In some embodiments, in the step of mixing the materials containing the oil phase, the emulsifier and the auxiliary agent at a preset temperature, the weight ratio of the oil phase to the emulsifier is 3-5: 1. Optionally, the weight ratio of the oil phase to the emulsifier to the auxiliary agent is 3:1.

[0108] In some embodiments, in the step after mixing the materials containing the oil phase, the emulsifier and the adjuvant at a preset temperature, the preset temperature is 40-70° C. Optionally, the preset temperature is 50-60° C.

[0109] In some embodiments, in the step of mixing the materials containing polyol, emulsifier and auxiliary agent at a preset temperature, the weight ratio of polyol to emulsifier is 2-5: 1. Optionally, the weight ratio of polyol to emulsifier is 2:1.

[0110] In some embodiments, in the step after mixing the materials containing polyol, emulsifier and auxiliary agent at a preset temperature, the preset temperature is 40-70° C. Optionally, the preset temperature is 50-60° C.

[0111] In some embodiments, in the step of adding the lactol phase component to the cream phase component under stirring, the weight ratio of the lactol phase component to the cream phase component is 1:5-6. Optionally, the weight ratio of the lactol phase component to the cream phase component is 1:5.

[0112] In some embodiments, after cooling the oleyl alcohol-emulsifier component to 40-60° C., a preservative is added, and after cooling to 20-30° C., an antioxidant and a flavor are also added.

[0113] In some embodiments, before the step of mixing the materials containing the oil phase, the emulsifier and the adjuvant at a preset temperature, the emulsifier is pretreated, and the pretreatment includes drying and adjusting the pH to 6.5-7.0.

[0114] Example 1

[0115] The oil phases screened out by interfacial tension are olive oil, sesame oil, and safflower oil, and the polyols are 1,3-propylene glycol and 1,2-butylene glycol.

[0116] Pretreatment of emulsifier: After mixing polyglycerol-2 oleate and polyglycerol-2 sesquioleate, heat at 70°C, add a small amount of deionized water, adjust the pH of the emulsifier to about 6 in an aqueous solution environment, and then freeze-dry for 48 hours to obtain a freeze-dried powder for standby use.

[0117] Preparation of emulsion phase components: Olive oil, sesame oil and safflower oil were stirred and mixed in equal proportions at room temperature in a mass ratio of 1:1:1 (500 rpm / min) to obtain a mixed oil. The mixed oil, emulsifier (two emulsifiers polyglycerol-2 oleate and polyglycerol-2 sesquioleate with a pH of 6 were mixed in a mass ratio of 1:1) and an auxiliary agent (β-cyclodextrin) were stirred and mixed in a mass ratio of 3:1:0.05 at room temperature at 500 rpm / min for 2 hours to obtain an emulsion phase.

[0118] Preparation of the emulsion phase component: 1,3-propylene glycol and 1,2-butylene glycol are stirred and mixed in equal proportions at a mass ratio of 2:1 at room temperature (500 rpm / min) to obtain a mixed polyol, and then an emulsifier (polyglycerol-6 oleate) and the mixed polyol are mixed in a mass ratio of 1:2 to obtain an emulsion phase component.

[0119] Preparation of oleyl alcohol-emulsifier component: take the above-mentioned emulsion phase component and the above-mentioned emulsion phase component according to a weight ratio of 1:5, then add the above-mentioned emulsion phase component to the above-mentioned emulsion phase component, and stir at 400r / min for 4h to obtain the oleyl alcohol-emulsifier component.

[0120] Preparation of natural plant cleansing oil: Add p-hydroxyacetophenone to the above oleyl alcohol-emulsifier component (the amount of p-hydroxyacetophenone added is 0.5% of the natural plant cleansing oil by weight percentage), stir at 500 rpm / min for 10 minutes to obtain the natural plant cleansing oil.

[0121] Example 2

[0122] The oil phase was screened out as almond oil, grape seed oil and rice germ oil by interfacial tension, and the polyols were glycerol and 1,2-butanediol.

[0123] Pretreatment of emulsifier: polyglycerol-2 isostearate, polyglycerol-3 dioleate and polyglycerol-4 isostearate are mixed, heated at 70°C, a small amount of deionized water is added, the pH of the emulsifier is adjusted to about 6 in an aqueous solution environment, and then freeze-dried for 48 hours to obtain a freeze-dried powder for standby use.

[0124] Preparation of emulsion phase components: almond oil, grape seed oil and rice germ oil were stirred and mixed in equal proportions at a mass ratio of 1:1:1 at room temperature (500rpm / min) to obtain a mixed oil phase. The mixed oil phase (almond oil, grape seed oil, rice germ oil), emulsifier (three emulsifiers polyglycerol-2 isostearate, polyglycerol-3 dioleate and polyglycerol-4 isostearate with a pH of 6 were mixed in a mass ratio of 1:1:1) and auxiliary agent (β-cyclodextrin) were stirred and mixed in a mass ratio of 3:1:0.05 at room temperature at 500rpm / min for 2h to obtain an emulsion phase component.

[0125] Preparation of the emulsion phase component: Glycerol and 1,2-butanediol are stirred and mixed in equal proportions at a mass ratio of 2:1 at room temperature (500 rpm / min) to obtain a mixed polyol, and then the emulsifier (polyglycerol-6 stearate) and the mixed polyol are mixed in a mass ratio of 1:2 to obtain an emulsion phase component.

[0126] Preparation of oleyl alcohol-emulsifier component: take the above-mentioned emulsion phase component and the above-mentioned emulsion oil phase component according to a weight ratio of 1:6, then add the above-mentioned emulsion phase component to the above-mentioned emulsion oil phase component, and stir at 400r / min for 4h to obtain the oleyl alcohol-emulsifier component.

[0127] Preparation of natural plant cleansing oil: Add p-hydroxyacetophenone to the above oleyl alcohol-emulsifier component (the amount of p-hydroxyacetophenone added is 0.5% of the natural plant cleansing oil by weight percentage), stir at 500 rpm / min for 10 minutes to obtain the natural plant cleansing oil.

[0128] Example 3

[0129] Through interfacial tension screening, the oil phases were identified as almond oil, peach kernel oil and wheat germ oil, and the polyols were identified as glycerol and 1,3-butanediol.

[0130] Pretreatment of emulsifier: Mix polyglycerol-2 dipolyhydroxystearate and polyglycerol-2 triisostearate, heat at 70°C, add a small amount of deionized water, adjust the pH of the emulsifier to about 6 in an aqueous solution environment, and then freeze-dry for 48 hours to obtain a freeze-dried powder for standby use.

[0131] Preparation of emulsion phase component: almond oil, peach kernel oil and wheat germ oil were stirred and mixed in equal proportions at a mass ratio of 1:1:1 at room temperature (500rpm / min) to obtain a mixed oil phase. The mixed oil phase (almond oil, grape seed oil and rice germ oil), emulsifier (two emulsifiers polyglycerol-2 dihydroxystearate and polyglycerol-2 triisostearate with a pH of 6 were mixed in a mass ratio of 1:1) and auxiliary agent (β-cyclodextrin) were stirred and mixed at a mass ratio of 3:1:0.05 at room temperature at 500rpm / min for 2h to obtain an emulsion phase component.

[0132] Preparation of the emulsion phase component: Glycerol and 1,3-butylene glycol are stirred and mixed in equal proportions at a mass ratio of 2:1 at room temperature (500 rpm / min) to obtain a mixed polyol, and then the emulsifier (polyglycerol-6 distearate) and the mixed polyol are mixed in a mass ratio of 1:2 to obtain an emulsion phase component.

[0133] Preparation of oleyl alcohol-emulsifier component: take the above-mentioned emulsion phase component and the above-mentioned emulsion phase component according to a weight ratio of 1:5, then add the above-mentioned emulsion phase component to the above-mentioned emulsion phase component, and stir at 400r / min for 4h to obtain the oleyl alcohol-emulsifier component.

[0134] Preparation of natural plant cleansing oil: Add p-hydroxyacetophenone to the above oleyl alcohol-emulsifier component (the amount of p-hydroxyacetophenone added is 0.5% of the natural plant cleansing oil by weight percentage), stir at 500 rpm / min for 10 minutes to obtain the natural plant cleansing oil.

[0135] The interfacial tension is tested by an interfacial tension meter and an interfacial rheology-assisted method. The test method is as follows:

[0136] (1) Prepare different test solutions, place the test liquids at a constant temperature of 25°C, and test them using a fully automatic surface tension meter;

[0137] (2) Use a fully automatic surface / interfacial tension meter. According to the requirements, first place the light phase oil in a glass container and perform the first step of measurement. Then remove the container, clean it, burn the platinum sheet red, and install it after cooling. Place the heavy phase alcohol in another container and perform the second step of measurement. After the second step of measurement, slowly add the light phase oil onto the heavy phase and immerse the platinum sheet. Be careful not to touch the platinum sheet when adding it, and perform the final third step of measurement;

[0138] (3) Clean the platinum sheet, reset the system, replace the alcohol and oil, repeat the previous step, and record all data;

[0139] (4) Measure the surface tension of each sample solution three times and take the average value;

[0140] (5) The interfacial tension data obtained from different test liquids were matched with the solution oil and alcohol, and a curve was drawn using Origin to summarize the changing trend of the interfacial tension under the change of oil and alcohol.

[0141] Data Analysis:

[0142] Stimulation experimental characterization

[0143] The natural plant cleansing oil in Example 1 and the commercially available cleansing oil (L'Oreal Flower Extract Cleansing Oil purchased from L'Oreal and Zhuben Qinghuan Jade Refreshing Plant Cleansing Oil purchased from Zhuben) were subjected to irritation experimental characterization, and the characterization method is as follows:

[0144] Experimental standard: "Cosmetic Eye Irritation Test Chicken Embryo Chorioallantoic Membrane Test" (T / SHRH 011-2018). Experimental purpose: In order to compare the degree of eye irritation of different makeup removers in actual use, the irritation is simulated by the changes in blood vessels in the chicken embryo chorioallantoic membrane test. Experimental method: Take 0.3mL of makeup remover oil and apply it directly to the CAM to ensure that at least 50% of the CAM surface is covered by the test substance. After 3 minutes of action, gently rinse the test substance on the CAM membrane with physiological saline (the time should be controlled within 30s), and quickly observe and take pictures after the rinsing operation (endpoint scoring method). In order to eliminate experimental errors, each sample should be repeated three times. Data processing: For tests conducted using the endpoint evaluation method, the endpoint score (ES) should be calculated, and the results should be retained to two decimal places: the score of each chicken embryo = the sum of the bleeding, coagulation and vascular melting observed in each chicken embryo; ES = the average of the mathematical sum of the scores of 3 chicken embryos. According to the ES value, the eye irritation of the test substance is classified according to the national standard.

[0145] The results are as follows Figure 2 and Figure 3 As shown, the experiment shows that the makeup remover oil of Example 1 has less vascular changes and lower irritation in the chicken embryo chorioallantoic membrane test, and the ES score is lower than that of the selected market competitors, indicating that the makeup remover oil of Example 1 has mild ingredients and excellent performance.

[0146] Emulsification experimental characterization

[0147] The natural plant cleansing oil in Example 1, commercially available product 1 (L'Oreal Flower Extract Cleansing Oil model purchased from L'Oreal), and commercially available product 2 (Zhuben Qinghuan Yuxiang Refreshing Plant Cleansing Oil model purchased from Zhuben) were subjected to emulsification experimental characterization, and the characterization method is as follows:

[0148] Experimental method: Weigh 10g of cleansing oil product into a beaker, add deionized water under stirring, and continuously track and observe the emulsified particles of the system. (Explanation: Take a proper amount of cleansing oil sample with water at a certain oil-water ratio, let it stand overnight, and observe the emulsified particles of the cleansing oil under a microscope.) The results are as follows Figure 4 shown.

[0149] The cleaning ability of makeup remover oil is related to its emulsifying properties. The better the emulsifying property of makeup remover oil, the easier it is for it to wrap up makeup oil and achieve the purpose of makeup removal. The widely recognized way to measure the emulsifying property of such products is to observe the emulsified particles through an optical microscope. The emulsified particle photo of a good emulsifying system should show that there are many emulsified particles of uniform size in the field of view. In the same type of system, smaller emulsified particles indicate that the system is more stable and has a better skin feel. Figure 4As shown, the ratio in the upper left corner of the small figure is the ratio of makeup remover oil to water. The size of the emulsified particles of the natural plant makeup remover oil in Example 1 is smaller and more uniform under both low water content and high water content conditions. This directly shows that the makeup remover oil of the present application can show better emulsification effect during actual use, achieve more efficient makeup removal effect and more delicate and comfortable use experience.

[0150] User Testing

[0151] In order to evaluate the use experience of the natural plant cleansing oil in Example 1 after actual makeup removal, we recruited 30 subjects. This experiment was conducted under a randomized, double-blind and controlled (self-control before and after using the sample) method. Healthy male / female subjects aged between 18 and 30 years old were selected. Product performance evaluation was conducted according to a questionnaire before the subjects used the test product and 0.5 hours after using the product.

[0152] The whole process is as follows: the subjects use warm water and commercially available amino acid facial cleanser to clean the inside of their right arms uniformly, and wipe them clean with dry facial tissues; the subjects expose the test site and sit quietly for 30 minutes in a laboratory with a temperature of 21±1℃ and a humidity of 50±5%; three 3cm×3cm areas are divided on the inside of a single arm, numbered A, B and C from top to bottom, and the subjects need to stand for 5 minutes after applying makeup, waiting for the makeup to form a natural film. After standing, use makeup remover oil to remove makeup. The specific operation is as follows: for each sample area, take a syringe to quantitatively (1g) makeup remover oil and rub it for 30 seconds; take a small amount of water (10g) for the first emulsification and rub it for 10 seconds at the same time; take an appropriate amount of water (30g) for the second emulsification and rub it for 10 seconds at the same time; finally, use a large amount of water (200g) to rinse; after removing the makeup, the subjects need to continue to stand for 30 minutes, and after the end of the standing, they need to fill in the questionnaire. After the end, the respondents can leave. The statistical questionnaire showed that 83% of the subjects (25 people) believed that the makeup remover oil of the present application had good moisturizing properties after use (4 / 5), and 70% of the subjects (21 people) believed that the residual feeling after washing was not obvious.

[0153] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A natural plant cleansing oil, characterized in that: The natural plant makeup remover oil comprises, by weight percentage: The rest is water; The oil phase and the emulsifier are both derived from natural plants; The polyol is a C3-C14 long carbon chain diol; The auxiliary agent includes cyclodextrin and cucurbituril; Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m; The saponification value of the oil phase is 100-200 mgKOH / g.

2. The natural plant cleansing oil according to claim 1, characterized in that: The natural plant makeup remover oil comprises, by weight percentage: The rest is water; The oil phase and the emulsifier are both derived from natural plants; The polyol is a C3-C14 long carbon chain diol; The auxiliary agent includes cyclodextrin and cucurbituril; Wherein, the interfacial tension between the oil phase and the polyol is 0.5-10 mN / m; The saponification value of the oil phase is 100-200 mgKOH / g.

3. The natural plant cleansing oil according to claim 1, characterized in that: The oil phase includes an oil phase with a high saponification value, an oil phase with a medium saponification value, and an oil phase with a low saponification value; Among them, the high saponification value is greater than 200 mgKOH / g; The medium saponification value is 180-200 mgKOH / g; Low saponification value is less than 180mgKOH / g; The weight ratio of the oil phase with high saponification value, the oil phase with medium saponification value and the oil phase with low saponification value is 1:1-5:1-3.

4. The natural plant cleansing oil according to claim 1, characterized in that: The oil phase comprises at least one of olive oil, castor oil, palm oil, palm kernel oil, coconut oil, sesame oil, safflower oil, almond oil, avocado oil, evening primrose oil, rice bran oil, macadamia seed oil, wheat germ oil, argan oil, rice germ oil, almond oil, olive oil, corn germ oil, peach kernel oil, safflower oil, grape seed oil, peony seed oil, linseed oil, meadowfoam seed oil and jojoba seed oil.

5. The natural plant cleansing oil according to claim 1, characterized in that: The emulsifier includes at least one of polyglycerol-2 oleate, polyglycerol-2 sesquioleate, polyglycerol-2 dipolyhydroxystearate, polyglycerol-2 triisostearate, polyglycerol-2 isostearate, polyglycerol-2 stearate, polyglycerol-3 diisostearate, polyglycerol-3 dioleate, polyglycerol-4 laurate, polyglycerol-4 oleate, polyglycerol-4 isostearate, polyglycerol-6 oleate, polyglycerol-6 distearate, polyglycerol-6 stearate, sophorolipids, rhamnolipids, trehalose lipids, lipopeptides, lipoproteins, fatty acids, phospholipids and neutral lipids.

6. The natural plant cleansing oil according to claim 1, characterized in that: The polyol includes at least one of 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,5-pentanediol, 1,3-pentanediol, 1,6-hexanediol, glycerol and 1,8-nonanediol isoprene glycol.

7. The natural plant cleansing oil according to claim 1, characterized in that: The auxiliary agent includes at least one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin and cucurbituril.

8. The natural plant cleansing oil according to claim 1, characterized in that: The preservative includes at least one of glycols, ketones and polar amphiphilic substances; Preferably, the diols include at least one of 1,2-pentanediol and 1,2-hexanediol; Preferably, the ketone comprises p-hydroxyacetophenone; Preferably, the polar amphiphilic substance comprises ethylhexylglycerin.

9. The method for preparing the natural plant cleansing oil according to any one of claims 1 to 8, characterized in that: The following steps are involved: Screening polyols and oil phases with interfacial tensions between 0.5 and 10 mN / m; Mixing the materials containing the oil phase, emulsifier and adjuvant at a preset temperature to obtain an emulsion phase component; Mixing the materials containing the polyol, emulsifier and auxiliary agent at a preset temperature to obtain a lactic alcohol phase component; adding the emulsion alcohol phase component to the emulsion oil phase component under stirring to obtain an oleyl alcohol-emulsifier component; After the oleyl alcohol-emulsifier component is cooled, a preservative is added, and the component is cooled again to obtain the natural plant cleansing oil.

10. The preparation method according to claim 9, characterized in that: In the step after mixing the materials containing the oil phase, the emulsifier and the auxiliary agent at a preset temperature, the weight ratio of the oil phase to the emulsifier is 3-5:1; and / or, in the step after mixing the materials containing the oil phase, the emulsifier and the auxiliary agent at a preset temperature, the preset temperature is 40-70° C.; and / or, in the step of mixing the materials containing the polyol, the emulsifier and the auxiliary agent at a preset temperature, the weight ratio of the polyol to the emulsifier is 2-5:1; and / or, in the step after mixing the materials containing the polyol, the emulsifier and the auxiliary agent at a preset temperature, the preset temperature is 40-70° C.; and / or, in the step of adding the lactol phase component to the emulsion phase component under stirring, the weight ratio of the lactol phase component to the emulsion phase component is 1:5-6; and / or, in the step of adding the lactol phase component to the emulsion phase component under stirring, the stirring condition is stirring at a speed of 300-600 rpm for 4-6 hours; and / or, in the step of cooling the oleyl alcohol-emulsifier component to 40-60° C., the cooling is performed by stirring at a speed of 200-800 r / min; And / or, after cooling the oleyl alcohol-emulsifier component to 40-60° C., adding a preservative, and then cooling to 20-30° C., the step further includes adding an antioxidant and a flavor.

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