Kinetic dual-continuous phase makeup remover oil and preparation method thereof

Abstract

The present invention relates to a kinetic dual-continuous phase makeup remover oil and a preparation method thereof. The components of the kinetic dual-continuous phase makeup remover oil include an oil phase, an aqueous phase, a first surfactant and a second surfactant; the oil phase includes a non-polar oil and a polar oil; the aqueous phase includes water, a polyol, and a water-soluble active substance; the first surfactant is a surfactant with an HLB value of 3-10; and the second surfactant is a surfactant with an HLB value of 10-20. The kinetic dual-continuous phase makeup remover oil provided by the present invention can be stably layered and can form a stable dual-continuous phase makeup remover oil after shaking. The system has good hydrophilicity and lipophilicity, so that the makeup remover oil can still dissolve makeup in the state of wet hands and wet face, bringing convenience to makeup removal.

Description

Technical Field

[0001] The invention belongs to the technical field of daily cosmetics, and particularly relates to a kinetic bicontinuous phase makeup remover oil and a preparation method thereof. Background Art

[0002] At present, most of the makeup remover oil products on the market are mainly composed of oil and surfactants, and their composition leads to some disadvantages. First of all, when traditional makeup remover oil dissolves makeup, the face and hands must be kept dry, otherwise the makeup dissolving fails and the makeup removal power is greatly reduced. In addition, ordinary makeup remover oil has a weak ability to remove oleophobic makeup (such as eyeliner) and makeup with strong film-forming properties, and it needs to be rubbed repeatedly to remove it completely. Furthermore, in order to enhance the makeup removal effect, some makeup remover oil products will add a large amount of highly permeable oils and emulsifiers with strong degreasing power (such as PEG-20 glyceryl triisostearate, etc.), which are more irritating to the skin and eyes. Finally, ordinary makeup remover oil cannot dissolve water-based functional active ingredients, which has certain limitations on formula design. Double-layer makeup remover oil (makeup remover liquid) has better makeup removal power, but it needs to be wiped with cotton pads to remove makeup, which is not convenient enough. Rubbing the skin with cotton pads for a long time may cause problems such as barrier damage and sensitivity. Dual-phase cleansing oil can solve problems such as wet hand cleansing, poor cleansing power, and poor mildness. Therefore, in recent years, there has been more and more research on dual-phase cleansing oil in China.

[0003] CN113230170A discloses a dual-continuous phase makeup remover oil. The invention realizes the stable existence of three phases, namely, water phase, oil phase and surfactant, in the same system. That is, both the oil phase and the water phase are continuous phases. As a coexisting makeup remover system, both water-soluble and oil-soluble components can be dissolved, and the makeup removal efficiency is higher than that of traditional makeup removers or makeup removers. The added bis-diethoxydiglycol cyclohexane 1,4-dicarboxylate has hydrophilic and lipophilic properties, which further enhances the makeup removal ability. However, the types of surfactants added are relatively small and the content of polyols is extremely low, so it is difficult to ensure the stability and hydrophilicity of the system.

[0004] CN114588079A discloses a powerful cleansing dual-continuous phase composition, a preparation method and an application thereof. The dual-continuous phase product can effectively remove a variety of makeup, and is particularly suitable for removing lipstick, eyeliner and mascara; it is safe and non-irritating, and can meet the makeup removal needs of people with different skin types. A dual-continuous phase composition, a preparation method and an application thereof are disclosed, but the HLB value of the added second surfactant is ≥20, and the compatibility with some oils is low, which has a great influence on the stability of the system.

[0005] Based on the above studies, it is found that the selection of surfactants and the ratio of oil phase to water phase have a great influence on the construction and stability of dual-continuous phase cleansing oil. In addition, the conventional continuous phase system needs to maintain the uniformity of the formula, which limits the selection and use of oils with smaller molecular weights such as alkanes with strong cleansing power, as well as hydrophilic emulsifiers, which will have certain defects in the speed of makeup removal. At the same time, in the dimension of skin care, the use of active ingredients in other active dimensions such as soothing and repairing will also be subject to certain restrictions.

[0006] In order to solve the above shortcomings, it is urgent to develop a dual-continuous phase makeup removal product that integrates high cost performance, efficient makeup removal, convenient makeup removal and skin care. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a kinetic bicontinuous phase makeup remover oil and a preparation method thereof.

[0008] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a kinetic bicontinuous phase cleansing oil, the components of which include an oil phase, an aqueous phase, a first surfactant and a second surfactant;

[0010] The oil phase includes non-polar oil and polar oil;

[0011] The aqueous phase includes water, polyols and water-soluble active substances;

[0012] The first surfactant is a surfactant with an HLB value of 3-10;

[0013] The second surfactant is a surfactant with an HLB value of 10-20.

[0014] The makeup remover of the present invention can remove stubborn stains and makeup with strong film-forming properties well by using the above-mentioned components, and the makeup remover can have a special appearance and state. When standing, the makeup remover is in a stratified state. At the same time, the stratification ratio is stable, the wall is not hung, the appearance is novel and beautiful, the upper oil phase can dissolve the oil-soluble components well, and the lower water phase can also dissolve the water-soluble components well, avoiding the precipitation problem under long-term storage, so that the system has better stability. When shaken, the product quickly becomes a transparent and uniform single phase, that is, a bicontinuous phase. Continue to stand for 5-10 minutes, and the makeup remover becomes a stratified state again. Under the action of forces such as stirring or shaking, the fluid dynamics of the system medium changes, and the stratified water-oil two phases are transformed into a single bicontinuous phase, which is more convenient for consumers to use. The makeup remover with this special phenomenon is a kinetic bicontinuous phase, and the makeup remover with this phenomenon is a kinetic bicontinuous phase makeup remover.

[0015] The kinetic dual-continuous phase makeup remover oil of the present invention is initially in a water-oil layered state, and becomes a uniform continuous phase after being stirred or shaken, and at the same time, the consistency increases, forming an oil gel (oil gel) shape, which is a very novel appearance. The oil gel of the present invention has viscosity, and the packaging material is highly practical, and can be poured more conveniently, and the material body is not easy to spill in the hands or on the face, which improves convenience.

[0016] Preferably, the components of the dynamic dual-continuous phase cleansing oil include, by weight, 42-90 parts of an oil phase, 4-32 parts of an aqueous phase, 5-20 parts of a first surfactant, and 0.5-6 parts of a second surfactant.

[0017] The amount of the oil phase added to the dual-continuous phase makeup remover of the present invention can be 45 parts, 46 parts, 48 ​​parts, 50 parts, 62 parts, 65 parts, 67 parts, 69 parts, 70 parts, 71 parts, 73 parts, 75 parts, 77 parts, 79 parts, 80 parts, 82 parts, 85 parts, 87 parts or 89 parts, etc.;

[0018] The amount of the aqueous phase added can be 5 parts, 6 parts, 8 parts, 10 parts, 12 parts, 15 parts, 17 parts, 19 parts, 20 parts, 21 parts, 23 parts, 25 parts, 27 parts, 29 parts, 30 parts or 31 parts, etc.;

[0019] The addition amount of the first surfactant can be 6 parts, 8 parts, 10 parts, 11 parts, 13 parts, 15 parts, 17 parts or 19 parts, etc.;

[0020] The added amount of the second surfactant can be 0.6 parts, 0.8 parts, 1 parts, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts or 5.7 parts, etc.

[0021] Preferably, the non-polar oil in the oil phase comprises C9-19 alkanes.

[0022] Preferably, the polar oil includes any one or a combination of at least two of cetyl ethylhexanoate, caprylic / capric triglyceride, dicaprylyl carbonate, isononyl isononanoate, propylene glycol dicaprylate / dicaprate, butylene glycol dicaprylate / dicaprate, glyceryl tri(ethylhexanoate), and ethylhexyl stearate.

[0023] Preferably, the oil phase is cetyl ethylhexanoate, caprylic / capric triglyceride, isononyl isononanoate and C9-19 alkane.

[0024] Preferably, the percentages of caprylic / capric triglyceride, isononyl isononanoate and C9-19 alkane in the makeup remover oil are 0.1-5% (for example, 0.3%, 0.5%, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4% or 4.5%, etc.), 0.5-8% (for example, 0.6%, 0.8%, 1%, 2%, 3%, 4%, 5%, 6% or 7%, etc.), and 6-24% (for example, 7%, 9%, 11%, 13%, 15%, 17%, 19%, 20% or 22%, etc.).

[0025] Preferably, the polyol includes any one of glycerol, butylene glycol, 1,3-propylene glycol, dipropylene glycol or panthenol, or a combination of at least two thereof.

[0026] Preferably, the aqueous phase also includes an antibacterial agent.

[0027] Preferably, the antibacterial agent includes any one of 1,2-pentanediol, octanoylhydroxamic acid or 1,2-hexanediol, or a combination of at least two thereof.

[0028] Preferably, the first surfactant includes any one of sorbitan sesquioleate, sorbitan isostearate, sorbitan sesquiisostearate, polyglyceryl-3 polyricinoleate, polyglyceryl-3 diisostearate, polyglyceryl-2 oleate, PEG-8 diisostearate or PEG-3 glyceryl isostearate, or a combination of at least two thereof.

[0029] Preferably, the first surfactant is sorbitan sesquiisostearate, sorbitan sesquiisostearate and polyglyceryl-2 oleate.

[0030] Preferably, the percentages of the sorbitan polyether-30 tetraoleate, sorbitan sesquiisostearate and polyglycerol-2 oleate in the makeup remover oil are 5-14% (for example, 6%, 7%, 8%, 9%, 10%, 11%, 12% or 13%, etc.), 0.5-4.5% (for example, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5% or 4%, etc.), and 0.01-1.8% (for example, 0.02%, 0.05%, 0.08%, 0.1%, 0.3%, 0.5%, 0.7%, 1%, 1.2%, 1.5% or 1.7%, etc.).

[0031] Preferably, the second surfactant includes any one of sorbitan polyether-30 tetraoleate, PEG-40 hydrogenated castor oil, PPG-26-buteth-26, polyglyceryl-10 laurate, polyglyceryl-6 caprylate, polyglyceryl-4 caprate or polysorbate-20, or a combination of at least two thereof.

[0032] Preferably, the second surfactant is PEG-40 hydrogenated castor oil, polyglyceryl-4 caprate and PPG-26-buteth-26.

[0033] Preferably, the percentages of PEG-40 hydrogenated castor oil, polyglyceryl-4 caprate and PPG-26-buteth-26 in the makeup remover oil are respectively 0.5-4% (for example, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5% or 4%, etc.), 0.05-1.2% (for example, 0.06%, 0.08%, 0.1%, 0.3%, 0.5%, 0.7%, 0.9%, 1% or 1.1%, etc.), and 0.01-1% (for example, 0.03%, 0.05%, 0.07%, 0.15, 0.3%, 0.5%, 0.7% or 0.9%, etc.).

[0034] Some existing dual-phase cleansing oil formulas have poor stability, and the addition of water-soluble active ingredients may cause precipitation of the dual-phase cleansing oil. If the water and oil phases are separated, the active ingredients can be dissolved more stably. Therefore, the present invention needs to conduct in-depth research on the hydrophilic-lipophilic balance (HLB value) of surfactants and the polarity of oils, and combine the separated water-oil phase with the dual-phase water-oil phase, and use surfactants with different HLB values ​​to construct a more stable skin care cleansing oil.

[0035] Preferably, the water-soluble active substance comprises any one of dipotassium glycyrrhizinate, gentian root extract, Centella asiatica extract, calendula flower extract, collagen, or a combination of at least two thereof. Preferably, the water-soluble active substance is dipotassium glycyrrhizinate and gentian root extract.

[0036] Preferably, the oil phase also includes oil-soluble active substances.

[0037] Preferably, the oil-soluble active ingredient includes any one of camellia seed oil, hornwort extract, Laminaria japonica extract, and Egyptian blue water lily extract, or a combination of at least two thereof.

[0038] The oil-soluble active ingredient is an Egyptian blue water lily extract.

[0039] Preferably, the percentages of the Egyptian blue water lily extract, dipotassium glycyrrhizinate and gentian root extract in the makeup remover oil are respectively 0.0025-1% (for example, 0.003%, 0.005%, 0.008%, 0.01%, 0.05%, 0.1%, 0.3%, 0.5%, 0.7% or 0.9%, etc.), 0.01-0.8% (for example, 0.03%, 0.05%, 0.07%, 0.15, 0.3%, 0.5% or 0.7%, etc.), and 0.01-1% (for example, 0.03%, 0.05%, 0.07%, 0.15, 0.3%, 0.5%, 0.7% or 0.9%, etc.).

[0040] Any specific point value within the above numerical range can be selected, and will not be described in detail here.

[0041] In a second aspect, the present invention provides a method for preparing the dual-phase makeup remover oil as described in the first aspect, the preparation method comprising uniformly mixing an oil phase, an aqueous phase, a first surfactant, and a second surfactant to obtain the dual-phase makeup remover oil.

[0042] Preferably, the method comprises:

[0043] (1) After the oil phase and the first surfactant are mixed evenly, the second surfactant is added and mixed evenly to obtain an oil phase liquid; the water phase components are mixed evenly to obtain a water phase liquid;

[0044] (2) The oil phase liquid and the water phase liquid are mixed and uniformly mixed to obtain the dual-continuous phase makeup remover oil.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] (1) The present invention breaks the limitation of traditional makeup remover oil that only has a single oil phase. It adds a water phase to the makeup remover oil and scientifically matches surfactants to stably dissolve water-soluble ingredients, thereby achieving skin care effects. In view of the problem that traditional makeup remover oil requires dry hands and dry face to remove makeup, the present invention selects surfactants with different HLB values ​​for use, thereby changing the hydrophilicity and lipophilicity of the system, so that the makeup remover oil can dissolve makeup regardless of whether the hands and face are dry or wet, thereby improving the convenience of using the makeup remover oil. In addition, the oil phase, water phase, surfactant and other ingredients selected by the present invention are mild and non-irritating, and the product is safer.

[0047] (2) The preparation method of the makeup remover oil provided by the present invention has simple steps and is easy to operate. The method can be used to prepare a product with a stable system, and can be applied to large-scale industrial production.

[0048] (3) The present invention combines the layered water-oil phase and the bicontinuous water-oil phase to construct a more stable skin-nourishing makeup remover oil. At the same time, the present invention can also expand the usage of oils with strong makeup removal power and active substances for skin nourishment and stabilization, and strengthen and accelerate makeup removal. In addition, the makeup remover oil of the present invention has a stable layering ratio, does not stick to the wall, has a novel and beautiful appearance, and can increase the usage of effective active substances, so that the skin-nourishing dimension of the makeup remover oil is truly realized.

[0049] (4) The kinetic bicontinuous phase cleansing oil of the present invention has a special appearance and state. When left standing, the cleansing oil is in a stratified state. When shaken, the product quickly turns into a transparent and uniform oil gel, i.e., a bicontinuous phase. When left standing for 5-10 minutes, the cleansing oil turns into a stratified state again. The cleansing oil having this special phenomenon is a kinetic bicontinuous phase, and the cleansing oil having this phenomenon is a kinetic bicontinuous phase cleansing oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 Schematic diagram of the kinetics of the dual-phase cleansing oil of the present invention. DETAILED DESCRIPTION

[0051] In order to further explain the technical means and effects adopted by the present invention, the technical solution of the present invention is further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

[0052] The following materials and comparative examples are as follows:

[0053]

[0054] The rest of the raw materials can be used as long as they are purchased from regular dealers.

[0055] Examples 1-3

[0056] This embodiment provides three kinds of kinetic bicontinuous phase cleansing oils. The components of the kinetic bicontinuous phase cleansing oils are shown in the following table. The amount of each component in the table is in parts:

[0057]

[0058] The preparation method of the dual-continuous phase cleansing oil is:

[0059] (1) After the oil phase and the first surfactant are mixed uniformly at room temperature, the second surfactant is added and mixed uniformly to obtain an oil phase liquid; the water phase components are mixed uniformly to obtain a water phase liquid;

[0060] (2) The oil phase liquid and the water phase liquid are mixed and uniformly mixed to obtain the dual-continuous phase makeup remover oil.

[0061] Example 4

[0062] This embodiment provides a kinetic bi-continuous phase makeup remover oil. The kinetic bi-continuous phase makeup remover oil is different from that of Example 1 only in that the components do not include Egyptian blue water lily extract, and the reduced amount is supplemented by cetyl ethylhexanoate. The remaining components and amounts are consistent with those of Example 1, and the preparation method refers to Example 1.

[0063] Example 5

[0064] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Example 1 only in that it does not include dipotassium glycyrrhizinate in its components, and the reduced amount thereof is supplemented by gentian root extract. The remaining components and amounts are consistent with those of Example 1, and the preparation method refers to Example 1.

[0065] Example 6

[0066] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Example 1 only in that the gentian root extract is not included in the components, and the reduced amount is supplemented by dipotassium glycyrrhizinate. The remaining components and amounts are consistent with those of Example 1, and the preparation method refers to Example 1.

[0067] Example 7

[0068] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of embodiment 1 only in that the first surfactant does not include sorbitan polyether-30 tetraoleate, and the reduced amount is supplemented by sorbitan sesquiisostearate and polyglycerol-2 oleate in proportion to the number of parts. The remaining components and amounts are consistent with those of embodiment 1, and the preparation method refers to embodiment 1.

[0069] Example 8

[0070] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Example 1 only in that the first surfactant does not include sorbitan sesquiisostearate, and the reduced amount is supplemented by sorbitan polyether-30 tetraoleate and polyglycerol-2 oleate in proportion to the number of parts. The remaining components and amounts are consistent with those of Example 1, and the preparation method refers to Example 1.

[0071] Example 9

[0072] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Embodiment 1 only in that the first surfactant does not include polyglycerol-2 oleate, and the reduced amount thereof is supplemented by sorbitan polyether-30 tetraoleate and sorbitan sesquiisostearate in proportion to the number of parts. The remaining components and amounts are consistent with those of Embodiment 1, and the preparation method refers to that of Embodiment 1.

[0073] Example 10

[0074] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Embodiment 1 only in that the second surfactant does not include PEG-40 hydrogenated castor oil, and the reduced amount thereof is supplemented by polyglycerol-4 caprate and PPG-26-butaneth-26 in proportion to the number of parts. The remaining components and amounts are consistent with those of Embodiment 1, and the preparation method refers to that of Embodiment 1.

[0075] Embodiment 11

[0076] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Embodiment 1 only in that the second surfactant does not include polyglyceryl-4 caprate, and the reduced amount thereof is supplemented by PEG-40 hydrogenated castor oil and PPG-26-butanol polyether-26 in proportion to the number of parts. The remaining components and amounts are consistent with those of Embodiment 1, and the preparation method refers to that of Embodiment 1.

[0077] Example 12

[0078] This embodiment provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from that of Embodiment 1 only in that the second surfactant does not include PPG-26-butanol polyether-26, and the reduced amount thereof is supplemented by PEG-40 hydrogenated castor oil and polyglyceryl-4 caprate in proportion to the number of parts. The remaining components and amounts are consistent with those of Embodiment 1, and the preparation method refers to that of Embodiment 1.

[0079] Comparative Example 1

[0080] This comparative example provides a kinetic bicontinuous phase cleansing oil. The kinetic bicontinuous phase cleansing oil is different from Example 1 only in that the first surfactant is not included in the components, and the reduced amount is proportionally supplemented by the second surfactant. The remaining components and amounts are consistent with Example 1, and the preparation method refers to Example 1.

[0081] Comparative Example 2

[0082] This comparative example provides a kinetic bicontinuous phase cleansing oil. The kinetic bicontinuous phase cleansing oil is different from Example 1 only in that the second surfactant is not included in the components, and the reduced amount is proportionally supplemented by the first surfactant. The remaining components and amounts are consistent with Example 1, and the preparation method refers to Example 1.

[0083] Comparative Example 3

[0084] This comparative example provides a kinetic bicontinuous phase cleansing oil. The kinetic bicontinuous phase cleansing oil is different from Example 1 only in that the oil phase does not include caprylic / capric triglyceride, and the reduced amount is supplemented by isononyl isononanoate and C9-19 alkane in proportion to the number of parts. The remaining components and amounts are consistent with those in Example 1, and the preparation method refers to Example 1.

[0085] Comparative Example 4

[0086] This comparative example provides a kinetic bicontinuous phase makeup remover oil. The kinetic bicontinuous phase makeup remover oil is different from Example 1 only in that the oil phase does not include isononyl isononanoate, and the reduced amount is supplemented by caprylic / capric triglyceride and C9-19 alkane in proportion. The remaining components and amounts are consistent with those in Example 1, and the preparation method refers to Example 1.

[0087] Comparative Example 5

[0088] This comparative example provides a kinetic bicontinuous phase cleansing oil. The kinetic bicontinuous phase cleansing oil is different from Example 1 only in that the oil phase does not include C9-19 alkane, and the reduced amount is supplemented by caprylic / capric triglyceride and isononyl isononanoate in proportion to the number of parts. The remaining components and amounts are consistent with those in Example 1, and the preparation method refers to Example 1.

[0089] Test Example 1

[0090] The stability test includes high temperature, low temperature and hot and cold cycle tests. The samples provided in Examples 1-12 were placed at room temperature, 48°C and -15°C for 3 months, and the appearance of the products was regularly observed for abnormal phenomena such as turbidity and color change. After 3 hot and cold cycle tests at -18°C / 25°C, the products were observed for abnormal phenomena such as turbidity and stratification. The test results are shown in Table 1.

[0091] Table 1

[0092]

[0093] It can be seen from the data in Table 1 that the dual-phase makeup remover oil provided by the present invention has excellent high and low temperature stability, and the composition of the surfactant has a great influence on the stability of the product.

[0094] Test Example 2

[0095] Cleansing test for makeup (BB cream, lipstick):

[0096] 180 volunteers were divided into 18 groups, each with 10 people. The 20 groups of volunteers used the cleansing oils prepared in Examples 1-12 and Comparative Examples 1-5 and a commercially available product for cleaning. The specific method was as follows: All volunteers uniformly cleaned the left forearm and the curved side of the right forearm, gently dried the water with a paper towel, and then marked 3 areas of 4cm*4cm as test areas, with at least 2cm between each area, and numbered the 3 test areas as L1, L2, L3 and R1, R2, R3, respectively. After sitting for 20 minutes, images of each test area were collected using a microscope, and the L*, a*, and b* values ​​of the initial state of the skin were measured by a spectrophotometer.

[0097] Then, a microscope was used to capture images of each test area, and a spectrophotometer was used to measure the L*, a*, and b* values ​​of the skin after applying BB cream / lipstick.

[0098] The L1, L2, L3 and R1, R2, R3 areas are cleaned quantitatively with the cleansing oil prepared in the embodiment or comparative example through a 1 mL syringe. Then rinse with clean water and gently dry with a paper towel. Sit still for 30 minutes, use a microscope to collect images of each test area, and measure the L*, a*, and b* values ​​of the skin after cleansing with a spectrophotometer. L* represents black and white. The larger the L* value, the whiter the skin tends to be, and vice versa. a* represents red-green. The larger the a* value, the more red the skin tends to be, and vice versa, the more green it tends to be; b* represents blue-yellow. The larger the b* value, the more yellow the skin tends to be, and vice versa, the blue. The laboratory maintains a constant temperature and humidity, with a test temperature of 23℃~24℃ and a relative humidity of 50%~60%.

[0099] Cleansing power calculation method: Calculate the skin color difference after applying BB cream / lipstick compared to the initial state, recorded as △E (after application); Calculate the skin color difference after removing makeup and cleaning compared to the initial state, recorded as △E (after cleaning). △E can comprehensively reflect the three-dimensional changes in skin color. The larger the △E value, the more obvious the skin color change, and the smaller the △E value, the closer the skin color is. The cleaning power is calculated by △E. The calculation formula is:

[0100] △E=SQRT(△L* 2 +△a* 2 +△b* 2 )

[0101] Cleaning power = (△E (after application) - △E (after cleaning) / △E (after application)) × 100%

[0102] The results are shown in Table 2:

[0103] Table 2

[0104]

[0105] It can be seen from the data in Table 2 that the makeup remover oil of the present invention has a very good makeup removal ability, and the formulation composition of the surfactant and the oil phase will have an impact on it.

[0106] Test Example 3 Consumer Sensory Effect Evaluation

[0107] 119 volunteers aged between 25 and 38 were selected as subjects and randomly divided into 17 groups, with 7 people in each group. Test method: The subjects used the products of Examples 1-12 and Comparative Examples 1-5 respectively. The subjects used daily skin care products normally during the day and used the test products once every night for 14 consecutive days. After the subjects shook the cleansing oil, they took an appropriate amount of the cleansing oil on their hands, and massaged the face in circles with dry hands and dry faces or wet hands and wet faces. No emulsification was required. After use, the subjects scored the eye mildness, skin feel, cleaning feeling, appearance satisfaction, and makeup removal effect. The 5-point system was used: 4.5 points and above, indicating very good, very satisfied; 4-4.5 points are good; 3-4 points are moderately acceptable; 3 points or less are not good, unacceptable. The score of each group is the average of 10 people, and the results are shown in Table 3.

[0108] Table 3

[0109]

[0110] According to Table 3, the makeup remover oil of the present invention has good mildness and skin feel, as well as good cleaning efficiency and makeup removal ability, and the test subjects are also highly satisfied with the appearance of the product.

[0111] By comparing Example 1 with Examples 4-6, it can be found that the present invention can improve the mildness of the system and the skin feel after use by adding Egyptian blue water lily extract, dipotassium glycyrrhizinate or gentian root extract, and dipotassium glycyrrhizinate and gentian root extract have a synergistic effect;

[0112] It can be seen from Examples 7-9 that the first surfactant has a great influence on skin feel, cleansing feel, appearance, and makeup removal ability. Its presence affects whether makeup and oil can be rinsed clean, thereby affecting the makeup removal ability, and also determines whether a bicontinuous phase is formed.

[0113] It can be seen from Examples 10-12 that the second surfactant has a certain influence on the cleansing feeling of water-based makeup and is an important makeup removal and cleansing component, thereby affecting whether the water-based makeup can be removed cleanly.

[0114] From Comparative Examples 1 and 2, it can be seen that the combination of surfactants with different HLB values ​​can make the cleansing oil have better cleaning power and makeup removal power;

[0115] It can be seen from Comparative Examples 3-5 that if caprylic / capric triglyceride is not added, the skin will lack softness. If isononyl isononanoate is not added, the mildness of the eye will be improved, but the makeup removal power will be worse. If C9-19 alkane is not added, the makeup removal power will be greatly deteriorated, the skin will feel heavy and lack of lightness, and the stratification will be slow, resulting in a low appearance evaluation. This shows that only when the three are used in combination can the makeup remover oil have both mildness, skin feel and makeup removal power.

[0116] Test Example 4 Safety Evaluation:

[0117] The specific method is: 35 males / females aged 18-55 years old with no history of allergies are selected, and each subject is tested with the products prepared in Examples 1-12. A qualified patch tester is selected, and the products of Examples 1-12 are added to the patch tester by a closed patch test method at about 0.020ml-0.025ml, respectively, and applied to the curved side of the forearm of the subject with a special adhesive tape. After 24 hours, the test substance is removed, and the skin reaction is observed 30 minutes, 24 hours, and 48 hours after removal, and the results are recorded according to the skin reaction grading standard (Table 4) in the "Safety Technical Specifications for Cosmetics" (2015 Edition).

[0118] The grading standards for adverse skin reactions are shown in Table 4:

[0119] Table 4

[0120]

[0121] The results are shown in Table 5:

[0122] Table 5

[0123]

[0124] It can be seen from the data in Table 5 that no adverse reactions were observed on the skin 30 minutes, 24 hours, and 48 hours after the spot tester was removed. It is determined that the makeup remover oil of the present invention has no adverse reactions to the human body and is highly safe.

[0125] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a kinetic dual-continuous phase makeup remover oil and a preparation method thereof, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0126] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0127] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A kinetic dual-continuous phase cleansing oil, It is characterized in that The components of the dynamic dual-continuous phase cleansing oil include, by weight, 42-90 parts of an oil phase, 4-32 parts of an aqueous phase, 5-20 parts of a first surfactant, and 0.5-6 parts of a second surfactant; The oil phase includes cetyl ethylhexanoate, caprylic / capric triglyceride, isononyl isononanoate and C9-19 alkane; The aqueous phase includes water, polyols and water-soluble active substances; The water-soluble active ingredients are dipotassium glycyrrhizinate and gentian root extract; The first surfactant is sorbitan polyether-30 tetraoleate, sorbitan sesquiisostearate and polyglycerol-2 oleate; Among them, the percentage of sorbitan polyether-30 tetraoleate in the makeup remover oil is 5-14%; the percentage of sorbitan sesquiisostearate in the makeup remover oil is 0.5-4.5%; the percentage of polyglycerol-2 oleate in the makeup remover oil is 0.01-1.8%; The second surfactant is PEG-40 hydrogenated castor oil, polyglyceryl-4 caprate and PPG-26-buteth-26; The content of PEG-40 hydrogenated castor oil in the makeup remover oil is 0.5-4%; the content of polyglyceryl-4 caprate in the makeup remover oil is 0.05-1.2%; and the content of PPG-26-butanediol polyether-26 in the makeup remover oil is 0.01-1%.

2. The kinetic dual-continuous phase cleansing oil according to claim 1, It is characterized in that The polyol includes any one of glycerol, butylene glycol, 1,3-propylene glycol, dipropylene glycol or panthenol, or a combination of at least two thereof.

3. The kinetic dual-continuous phase cleansing oil according to claim 1, It is characterized in that The aqueous phase also includes an antibacterial agent.

4. The kinetic dual-continuous phase cleansing oil according to claim 3, It is characterized in that The antibacterial agent includes any one of 1,2-pentanediol, octanoylhydroxamic acid or 1,2-hexanediol or a combination of at least two thereof.

5. The kinetic dual-continuous phase cleansing oil according to claim 1, It is characterized in that The oil phase also includes oil-soluble active substances.

6. The kinetic dual-continuous phase cleansing oil according to claim 5, It is characterized in that The oil-soluble active ingredient includes any one of camellia seed oil, hornwort extract, Laminaria japonica extract, and Egyptian blue water lily extract, or a combination of at least two of them.

7. The kinetic dual-continuous phase cleansing oil according to claim 6, It is characterized in that The oil-soluble active ingredient is an Egyptian blue water lily extract.

8. A method for preparing a kinetic dual-continuous phase cleansing oil as claimed in any one of claims 1 to 7, It is characterized in that The method comprises: (1) After the oil phase and the first surfactant are mixed evenly, the second surfactant is added and mixed evenly to obtain an oil phase liquid; Mix the aqueous phase components and obtain an aqueous phase liquid after mixing them uniformly; (2) The oil phase liquid and the water phase liquid are mixed and uniformly mixed to obtain the dual-continuous phase makeup remover oil.

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