Bicontinuous-phase cleansing cream capable of being used for wet hands as well as preparation method and application of bicontinuous-phase cleansing cream

Abstract

The invention relates to bicontinuous-phase cleansing cream capable of being used for wet hands and a preparation method and application thereof.The bicontinuous-phase cleansing cream is prepared from, by mass, 10-35 parts of emollient, 5-25 parts of oleophylic emulsifier, 30-50 parts of hydrophilic emulsifier, 1-10 parts of oil-phase thickener, 5-25 parts of humectant and 5-25 parts of water; the oil phase thickening agent is prepared from any one or a combination of at least two of polyamide-3, polyamide-8, dibutyl ethyl hexanoyl glutamine or dibutyl lauroyl glutamine. The components in the cleansing cream are compounded according to a reasonable ratio and matched with a specific type of oil-phase thickening agent, so that the obtained product is of a bicontinuous phase structure, is light and thin in skin feeling in the using process and relatively good in moistening property and moisture retention, and has the technical effects that the cleansing cream can be used for wet hands and is excellent in cleansing performance.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics, and in particular to a dual-continuous phase makeup remover cream that can be used on wet hands, and a preparation method and application thereof. Background Art

[0002] The makeup removal products in the prior art can be divided into liquid (such as makeup removal oil and makeup removal water) and solid (such as makeup removal cream). The amount of liquid makeup removal products is difficult to control during use, and there is a risk of spillage, which brings a lot of inconvenience to consumers. However, makeup removal cream is solid and very convenient to use, so it is widely welcomed by consumers.

[0003] Traditional makeup remover cream systems are basically pure oil phase systems. The skin feels greasy when removing makeup, the makeup removal effect is poor with wet hands, and an oily film is easily left after cleansing, resulting in poor use effect.

[0004] CN117323259A discloses a dual-continuous phase makeup remover, including a phase A component and a phase B component; the phase A component includes: ethylhexyl palmitate, sunflower seed oil, coconut oil alcohol-caprylate / caprate, octyldodecanol, emulsifier, thickener; the phase B component includes: bitter orange flower oil, bridge fruit oil, white pond flower seed oil, rose fruit oil, walnut seed oil, sea fennel callus culture filtrate, colorless jojoba oil, squalane, olive fermented oil, Arctic cloudberry seed extract, OPTIMEALTH 10W; the thickener is polyethylene. The disclosed phase A is oil, emulsifier and thickener, and the phase B is part of plant oil esters and oil-soluble active ingredients. It does not have the conditions for the formation of a dual-continuous phase system, and the use of polyethylene as a thickener is not environmentally friendly and has been banned in cosmetics.

[0005] CN111110599A discloses a transparent makeup remover cream and its preparation method and double-headed product. The transparent makeup remover cream includes 1-3 parts of dibutyl lauroyl glutamine, 1-3 parts of dibutyl ethylhexanoyl glutamine, 8-14 parts of octyldodecanol, 40-55 parts of ethylhexyl palmitate, 10-20 parts of PEG-30 sorbitan tetraoleate, 3-12 parts of polyglycerol-10 laurate, 7-15 parts of hydrogenated polyisobutylene, 0.1-1 parts of white meadowfoam seed oil, 0.1-1 parts of bisabolol, 0.05-2 parts of dextrin palmitate, 0.1-1 parts of white lily extract, 0.1-1 parts of glycerol, 0.1-1 parts of moringa extract, 0.01-0.05 parts of butylated hydroxytoluene, and 1-10 parts of polyamide-8. The disclosed formula contains only a small amount of polyol and water, and it is difficult to form a dual-continuous phase system.

[0006] Therefore, providing a dual-continuous phase makeup removing cream that can be used with wet hands and has excellent makeup removing performance has high practical application value. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a dual-continuous phase makeup remover cream that can be used with wet hands, and a preparation method and application thereof. The present invention compounds the components in the makeup remover cream in a reasonable proportion and simultaneously adds a specific type of oil phase thickener, so that the obtained product has a dual-continuous phase structure, has a light and thin skin feel during use, has good moisturizing and hydrating properties, and has the technical effect of being usable with wet hands and having excellent makeup removal performance.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a dual-phase makeup remover cream that can be used with wet hands, wherein the dual-phase makeup remover cream comprises, by weight, 10-35 parts of an emollient, 5-25 parts of a lipophilic emulsifier, 30-50 parts of a hydrophilic emulsifier, 1-10 parts of an oil phase thickener, 5-25 parts of a humectant, and 5-25 parts of water;

[0010] The oil phase thickener includes any one of polyamide-3, polyamide-8, dibutyl ethylhexanoyl glutamide or dibutyl lauroyl glutamide, or a combination of at least two thereof.

[0011] In the present invention, the emollient can be, for example, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, etc.; the lipophilic emulsifier can be, for example, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, etc.; the hydrophilic emulsifier can be, for example, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, etc.; the oil phase thickener can be, for example, 1 part, 2 parts, 4 parts, 6 parts, 8 parts, 10 parts, etc.; the humectant can be, for example, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, etc.; water can be, for example, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, etc.

[0012] The present invention compounds the components in the makeup remover cream in a reasonable proportion and adds a specific type of oil phase thickener. The obtained product has a dual-continuous phase structure, has a light skin feel during use, has good moisturizing and moisturizing properties, and has the technical effects of being usable with wet hands and having excellent makeup removal performance.

[0013] Preferably, the dual-phase makeup remover cream comprises, by weight, 10-30 parts of emollient, 10-20 parts of lipophilic emulsifier, 35-50 parts of hydrophilic emulsifier, 3-7 parts of oil phase thickener, 10-20 parts of humectant and 10-20 parts of water.

[0014] In the present invention, by further optimizing the mass fraction of each component, the performance of the obtained dual-continuous phase makeup remover cream is more excellent.

[0015] Preferably, the emollient includes any one or a combination of at least two of octyldodecyl alcohol, cetearyl ethylhexanoate, propylene glycol isostearate, glyceryl tri(ethylhexanoate), C12-15 alcohol benzoate, and diethylhexyl sebacate, preferably octyldodecyl alcohol.

[0016] In the present invention, the emollient plays the role of dissolving oil with oil when removing makeup, and the makeup removal performance can be further improved by optimizing the types of components.

[0017] Preferably, the lipophilic emulsifier comprises a combination of sorbitan octanoate and glyceryl oleate.

[0018] Preferably, the hydrophilic emulsifier comprises PEG-7 glyceryl cocoate.

[0019] In the present invention, the hydrophilic emulsifier improves the solubility of the system in water, and the combination with the lipophilic emulsifier helps to form a dual-continuous phase system. By compounding specific types of emulsifiers of the two types, the product quality can be further improved and the makeup removal performance can be improved.

[0020] Preferably, the moisturizing agent includes any one of dipropylene glycol and 1,2-hexanediol or a combination of both, preferably a combination of dipropylene glycol and 1,2-hexanediol.

[0021] In the present invention, the moisturizer plays a role in stabilizing the interface of the bicontinuous phase, and the makeup removal performance of the product can be further improved by compounding the polyol system.

[0022] Preferably, the mass ratio of dipropylene glycol to 1,2-hexanediol is 1:(0.05-10), for example, it can be 1:0.05, 1:0.1, 1:1, 1:2, 1:5, 1:8, 1:10, etc., preferably 1:(0.1-10).

[0023] Preferably, the oil phase thickener comprises a combination of polyamide-3 and polyamide-8.

[0024] In the present invention, the compounding of polyamide-3 and polyamide-8 can make the formed system more stable.

[0025] Preferably, the mass ratio of polyamide-3 to polyamide-8 is 1:(0.2-6), for example, it can be 1:0.2, 1:0.5, 1:1, 1:1.5, 1:2, 1:3, 1:4, 1:6, etc., preferably 1:(0.5-4).

[0026] In a second aspect, the present invention provides a method for preparing a dual-phase makeup remover cream that can be used with wet hands according to the first aspect, the preparation method comprising: mixing an emollient, a lipophilic emulsifier, a hydrophilic emulsifier, an oil phase thickener, a humectant and water, heating until completely dissolved, and then cooling to form a paste to obtain the dual-phase makeup remover cream.

[0027] Preferably, the preparation method comprises the following steps:

[0028] (1) mixing an emollient, a lipophilic emulsifier and a hydrophilic emulsifier uniformly, adding a moisturizer and water, and stirring until the system becomes clear and transparent to obtain a solution 1;

[0029] (2) heating solution 1, adding the oil phase thickener, and stirring until completely dissolved to obtain solution 2;

[0030] (3) Cooling the second solution and cooling it naturally until it forms a paste to obtain the dual-continuous phase makeup remover cream.

[0031] Preferably, the heating in step (2) is to a temperature of 85-90°C, for example, 85°C, 86°C, 87°C, 88°C, 89°C, 90°C, etc.

[0032] Preferably, the temperature of step (3) is cooled to 25-35°C, for example, 25°C, 26°C, 28°C, 30°C, 32°C, 34°C, 35°C, etc.

[0033] In a third aspect, the present invention provides a use of the dual-continuous phase makeup remover cream that can be used on wet hands according to the first aspect in the preparation of makeup remover cosmetics.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] The present invention compounds the components in the makeup remover cream in a reasonable proportion and adds a specific type of oil phase thickener. The obtained product has a dual-continuous phase structure, has a light skin feel during use, has good moisturizing and moisturizing properties, and has the technical effects of being usable with wet hands and having excellent makeup removal performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a comparison diagram of the product morphologies of Example 1, Examples 13-16, and Comparative Example 4.

[0037] Figure 2A It is the makeup removal effect diagram of Example 1-3.

[0038] Figure 2B It is the makeup removal effect diagram of Example 4-7.

[0039] Figure 2C It is the makeup removal effect diagram of Example 8-12.

[0040] Figure 2D It is the makeup removal effect diagram of Examples 13-16.

[0041] Figure 2E It is the makeup removal effect diagram of comparative examples 1-5 and 7.

[0042] Figure 3 This is an electron microscope image of the product provided in Example 1.

[0043] Figure 4 This is an electron microscope image of the product provided in Comparative Example 1.

[0044] Figure 5 This is the electron microscope image of the product provided in Comparative Example 5.

[0045] Figure 6 This is the electron microscope image of the product provided in Comparative Example 6.

[0046] Figure 7 This is a verification diagram of the dual-continuous phase structure of the product provided in Example 1; the left side is the water-soluble pigment, and the right side is the oil-soluble pigment.

[0047] Figure 8 This is a verification diagram of the dual-continuous phase structure of the product provided in Example 6; the left side is the water-soluble pigment, and the right side is the oil-soluble pigment. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. However, the following examples are only simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0049] The sources of materials used in the following examples are as follows:

[0050] The trade name of sorbitan caprylate / glyceryl oleate is TEGO Remo 95MB, and the others are conventional commercial products.

[0051] Example 1

[0052] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0053]

[0054] The preparation method comprises the following steps:

[0055] (1) mixing an emollient, a lipophilic emulsifier and a hydrophilic emulsifier uniformly, adding a moisturizer and deionized water, and stirring until the system becomes clear and transparent to obtain a solution 1;

[0056] (2) heating solution 1 to 85° C., adding the oil phase thickener, and stirring until completely dissolved to obtain solution 2;

[0057] (3) Cooling the second solution to 25° C. and cooling naturally until a paste is formed to obtain the dual-continuous phase makeup remover cream.

[0058] Example 2

[0059] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0060]

[0061]

[0062] The preparation method comprises the following steps:

[0063] (1) mixing an emollient, a lipophilic emulsifier and a hydrophilic emulsifier uniformly, adding a moisturizer and deionized water, and stirring until the system becomes clear and transparent to obtain a solution 1;

[0064] (2) heating solution 1 to 90° C., adding an oil phase thickener, and stirring until completely dissolved to obtain solution 2;

[0065] (3) Cooling the second solution to 35° C. and cooling naturally until a paste is formed to obtain the dual-continuous phase makeup remover cream.

[0066] Example 3

[0067] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0068]

[0069] The preparation method comprises the following steps:

[0070] (1) mixing an emollient, a lipophilic emulsifier and a hydrophilic emulsifier uniformly, adding a moisturizer and deionized water, and stirring until the system becomes clear and transparent to obtain a solution 1;

[0071] (2) heating solution 1 to 87° C., adding the oil phase thickener, and stirring until completely dissolved to obtain solution 2;

[0072] (3) Cooling the second solution to 30° C. and cooling naturally until a paste is formed to obtain the dual-continuous phase makeup remover cream.

[0073] Example 4

[0074] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that 1,2-hexanediol is not added to the moisturizer, and its mass fraction is allocated to dipropylene glycol. The rest is as in embodiment 1.

[0075] Example 5

[0076] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that dipropylene glycol is not added to the moisturizer, and its mass fraction is allocated to 1,2-hexanediol. The rest is as in embodiment 1.

[0077] Example 6

[0078] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that sorbitan caprylate / glyceryl oleate in the lipophilic emulsifier is replaced with sorbitan isostearate in equal amounts. The rest is as in embodiment 1.

[0079] Example 7

[0080] This embodiment provides a dual-phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of PEG-7 glyceryl cocoate is replaced with PEG-8 caprylic / capric glycerides in the hydrophilic emulsifier. The rest is as in embodiment 1.

[0081] Example 8

[0082] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of octyldodecyl alcohol in the emollient is replaced by propylene glycol isostearate. The rest is as in embodiment 1.

[0083] Example 9

[0084] This embodiment provides a dual-phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of octyldodecyl alcohol in the emollient is replaced by cetyl ethylhexanoate. The rest is as in embodiment 1.

[0085] Example 10

[0086] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of octyl dodecanol is replaced by glyceryl tri(ethylhexanoate) in the emollient. The rest is as in embodiment 1.

[0087] Embodiment 11

[0088] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of octyl dodecanol in the emollient is replaced by C12-15 alcohol benzoate. The rest is as in embodiment 1.

[0089] Example 12

[0090] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that an equal amount of octyl dodecanol is replaced with diethylhexyl sebacate in the emollient. The rest is as in embodiment 1.

[0091] Embodiment 13

[0092] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that the oil phase thickener is adjusted to 5 parts of polyamide-3. The rest is as in embodiment 1.

[0093] Embodiment 14

[0094] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that the oil phase thickener is adjusted to 5 parts of polyamide-8. The rest is as in embodiment 1.

[0095] Embodiment 15

[0096] This embodiment provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that the oil phase thickener is adjusted to 1 part of dibutyl ethylhexanoyl glutamine. The rest is as in embodiment 1.

[0097] Example 16

[0098] This embodiment provides a dual-phase makeup remover cream that can be used with wet hands. The only difference between this embodiment and embodiment 1 is that the oil phase thickener is adjusted to 1 part of dibutyl lauroyl glutamide. The rest is as in embodiment 1.

[0099] Comparative Example 1

[0100] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between the comparative example and Example 1 is that the oil phase thickener is adjusted to 5 parts of synthetic wax. The rest is the same as Example 1.

[0101] Comparative Example 2

[0102] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between the comparative example and Example 1 is that the oil phase thickener is adjusted to 5 parts of trihydroxystearin. The rest is reference to Example 1.

[0103] Comparative Example 3

[0104] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between the dual-continuous phase makeup remover cream and Example 1 is that the oil phase thickener is adjusted to 1 part of dextrin palmitate. The rest is as in Example 1.

[0105] Comparative Example 4

[0106] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands. The only difference between the comparative example and Example 1 is that the oil phase thickener is adjusted to 5 parts of C20-40 alcohol. The rest is the same as Example 1.

[0107] Comparative Example 5

[0108] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0109]

[0110]

[0111] The preparation method is as in Example 1.

[0112] Comparative Example 6

[0113] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0114] Components raw material Number of copies Emollients Cetyl Ethylhexanoate 37 Lipophilic emulsifier Sorbitan octanoate / glyceryl oleate 14 Hydrophilic emulsifier PEG-7 Glyceryl Cocoate 42 Oil phase thickener Synthetic wax 5 Moisturizer Dipropylene glycol 1 water Deionized water 1

[0115] The preparation method is as in Example 1.

[0116] Comparative Example 7

[0117] This comparative example provides a dual-continuous phase makeup remover cream that can be used with wet hands, comprising the following components:

[0118]

[0119]

[0120] The preparation method is as in Example 1.

[0121] Test Example 1

[0122] Texture appearance and hardness test

[0123] Hardness test:

[0124] Test instrument: CR-3000EX-L Texture hardness tester

[0125] Test method: Sample preparation (prepare the sample to be tested and place it at room temperature for 24 hours), select the appropriate probe according to the characteristics of the sample, set the test parameters, place the container containing the sample on the test platform of the instrument, ensure that its position is correct and stable, turn on the instrument, start data collection, interpret the hardness characteristics of the sample based on the test results, and compare the differences between different examples.

[0126] The appearance, texture, and hardness results of the dual-phase makeup remover cream provided in Examples 1-3, 13-16, and Comparative Examples 1-4 are shown in Table 1. The product morphology comparison diagram of the exemplary Examples 1, 13-16, and Comparative Example 4 is shown in Figure 1 shown.

[0127] Table 1

[0128]

[0129]

[0130] By comparing Examples 1-3, 13-16 with Comparative Examples 1-4, it can be seen that the present invention has better compatibility with the system and has excellent thickening performance by selecting a specific type of thickener.

[0131] By comparing Example 1 with Examples 13-16, it can be seen that the present invention can further improve the stability of the product by rationally compounding polyamide-3 and polyamide-8.

[0132] Test Example 2

[0133] Makeup removal performance test

[0134] Test Method

[0135] a. Preparation before the test: Select a 25*25mm test area on the artificial skin, select the corresponding makeup and apply it on the test area, apply it as evenly as possible, let it stand for 5 minutes after application, and take a picture of the test area before removing makeup;

[0136] b. Makeup removal step: spray 0.5g of tap water on the test area and apply it evenly (simulating wet hands), take a certain amount of 0.5g of the example and comparative example samples on the test area, apply them in a clockwise circle with the index finger and middle finger, and take a picture of the makeup removal cream dissolving makeup after applying 10 circles; finally, rinse the skin with clean water until there is no makeup removal cream sample left, dry the skin with a paper towel, observe the final makeup removal effect and take a picture.

[0137] The makeup removal effect scoring criteria are as follows:

[0138] 12-15 points - basically no trace of makeup left is visible to the naked eye

[0139] 8-11 points - Faint makeup residue, need to be carefully distinguished

[0140] 4-7 points - A small amount of makeup residue can be seen with the naked eye

[0141] 1-3 points - A lot of makeup residue is clearly visible

[0142] The makeup removal effect scores of the products provided in Examples 1-16 and Comparative Examples 1-7 are shown in Table 2. For example, the makeup removal effect chart of Examples 1-3 is shown in Table 2. Figure 2A As shown, the makeup removal effect diagram of Examples 4-7 is as follows Figure 2B As shown, the makeup removal effect diagram of Examples 8-12 is as follows Figure 2C As shown, the makeup removal effect diagram of Examples 13-16 is as follows Figure 2D As shown, the makeup removal effect diagram of Comparative Examples 1-5 and 7 is as follows Figure 2E shown.

[0143] Table 2

[0144]

[0145]

[0146] The test results show that:

[0147] (1) It can be seen from Examples 1 to 16 that the present invention reasonably compounds the components in the dual-continuous phase makeup remover cream in specific proportions and uses a specific type of oil phase thickener. The obtained product has a dual-continuous phase structure, can be used with wet hands when removing makeup, has excellent performance in removing water-based makeup, and is easy to carry and use.

[0148] (2) By comparing Example 1 with Examples 4-5, it can be seen that the present invention can stabilize the interface of the bicontinuous phase by rationally compounding the polyol system in the moisturizer, thereby further improving the makeup removal performance;

[0149] By comparing Example 1 with Examples 6-7, it can be seen that the present invention can further improve the makeup removal performance by compounding a specific lipophilic emulsifier and a hydrophilic emulsifier;

[0150] It can be seen from the comparison between Example 1 and Examples 8-12 that the emollient plays the role of dissolving oil with oil when removing makeup, and the makeup removal performance can be further improved by selecting a specific emollient.

[0151] (3) It can be seen from Example 1 and Comparative Examples 1-4 that the texture and appearance of the product obtained by the present invention are improved by selecting a specific type of thickener, and the makeup removal performance is further improved;

[0152] It can be seen from Example 1 and Comparative Examples 5-7 that the present invention reasonably compounded the types and proportions of the components in the dual-continuous phase makeup remover cream, so that the obtained product has better makeup removal performance.

[0153] Test Example 3

[0154] Electron microscope test

[0155] Test instrument: Biological cryo-scanning electron microscope (Cryo-SEM)

[0156] Test method: The sample is frozen and fixed by high-pressure freezing method, so that water does not crystallize to form glassy water during the solidification process. After freezing and fixing, the sample is broken by special equipment in a vacuum and low temperature (-100℃) environment to expose a fresh cross section, and then conductive spraying is carried out under vacuum and low temperature (-90℃) conditions to complete the freezing sample preparation; the sample is placed on the cold stage of the scanning electron microscope through a freezing transfer system for observation.

[0157] The product electron microscope image provided in Example 1 is as follows Figure 3 As shown, a characteristic layered structure can be seen, and a continuous irregular pore structure is embedded in the structure, which confirms the formation of a dual-continuous phase structure.

[0158] The product electron microscope picture provided in Comparative Example 1 is as follows Figure 4 As shown in the figure, all the crystals are irregular in shape, and there is an obvious phenomenon of light and dark, which proves the non-uniformity of the system and indicates that a dual-continuous phase system cannot be formed by adding synthetic wax for thickening.

[0159] The product electron microscope picture provided in Comparative Example 5 is as follows Figure 5 As shown in the figure, all the crystals are irregular in shape, which are presumed to be broken synthetic wax solids. No obvious lamellar regions and bicontinuous phase characteristic regions were observed.

[0160] The product electron microscope picture provided in Comparative Example 6 is as follows Figure 6 As shown in the figure, all the crystals are irregular in shape, which are presumed to be broken synthetic wax solids. No obvious lamellar regions and bicontinuous phase characteristic regions were observed.

[0161] Test Example 4

[0162] Verification of the bicontinuous phase structure

[0163] Take the products of Example 1 and Comparative Example 6, add water-soluble pigments and oil-soluble pigments respectively, and observe them inverted.

[0164] The state of the product of Example 1 is as follows Figure 7 As shown, both water-soluble pigments (left) and oil-soluble pigments (right) can be dispersed in this system, confirming that it has a dual continuous phase structure.

[0165] The state of the product of Comparative Example 6 is as follows Figure 8 As shown, the water-soluble pigment (left) cannot be dispersed in the system, proving that it does not form a dual-continuous phase structure.

[0166] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A dual-continuous phase makeup remover cream that can be used with wet hands, characterized in that: The dual-phase makeup remover cream comprises, by weight, 10-35 parts of an emollient, 5-25 parts of a lipophilic emulsifier, 30-50 parts of a hydrophilic emulsifier, 1-10 parts of an oil phase thickener, 5-25 parts of a moisturizer, and 5-25 parts of water; The oil phase thickener includes any one of polyamide-3, polyamide-8, dibutyl ethylhexanoyl glutamide or dibutyl lauroyl glutamide, or a combination of at least two thereof.

2. The dual-phase makeup remover cream according to claim 1, characterized in that: The dual-continuous phase makeup remover cream comprises, by weight, 10-30 parts of moisturizer, 10-20 parts of lipophilic emulsifier, 35-50 parts of hydrophilic emulsifier, 3-7 parts of oil phase thickener, 10-20 parts of humectant and 10-20 parts of water.

3. The dual-phase makeup removing cream according to claim 1 or 2, characterized in that: The emollient includes any one of octyldodecyl alcohol, cetearyl ethylhexanoate, propylene glycol isostearate, glyceryl tri(ethylhexanoate), C12-15 alcohol benzoate, and diethylhexyl sebacate, or a combination of at least two thereof, preferably octyldodecyl alcohol.

4. The dual-phase makeup remover cream according to any one of claims 1 to 3, characterized in that: The lipophilic emulsifier includes a combination of sorbitan octanoate and glycerol oleate; Preferably, the hydrophilic emulsifier comprises PEG-7 glyceryl cocoate.

5. The dual-phase makeup remover cream according to any one of claims 1 to 4, characterized in that: The moisturizing agent includes any one of dipropylene glycol or 1,2-hexanediol or a combination of both, preferably a combination of dipropylene glycol and 1,2-hexanediol; Preferably, the mass ratio of dipropylene glycol to 1,2-hexanediol is 1:(0.05-10), preferably 1:(0.1-10).

6. The dual-phase makeup remover cream according to any one of claims 1 to 5, characterized in that: The oil phase thickener comprises a combination of polyamide-3 and polyamide-8; Preferably, the mass ratio of polyamide-3 to polyamide-8 is 1:(0.2-6), preferably 1:(0.5-4).

7. A method for preparing a dual-continuous phase makeup remover cream that can be used with wet hands according to any one of claims 1 to 6, characterized in that: The preparation method comprises: mixing an emollient, a lipophilic emulsifier, a hydrophilic emulsifier, an oil phase thickener, a moisturizer and water, heating until completely dissolved, and then cooling until a paste is formed, so as to obtain the dual-continuous phase makeup remover cream.

8. The preparation method according to claim 7, characterized in that: The preparation method comprises the following steps: (1) mixing an emollient, a lipophilic emulsifier and a hydrophilic emulsifier uniformly, adding a moisturizer and water, and stirring until the system becomes clear and transparent to obtain a solution 1; (2) heating solution 1, adding the oil phase thickener, and stirring until completely dissolved to obtain solution 2; (3) Cooling the second solution and cooling it naturally until it forms a paste to obtain the dual-continuous phase makeup remover cream.

9. The preparation method according to claim 7 or 8, characterized in that: Step (2) wherein the heating temperature is 85-90° C. Preferably, the temperature in step (3) is lowered to 25-35°C.

10. Use of the dual-phase make-up remover cream that can be used on wet hands according to any one of claims 1 to 6 in the preparation of make-up remover cosmetics.

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