A preservative-free, all-in-one oil-based makeup composition and its preparation method

Abstract

This invention belongs to the field of cosmetic technology and discloses a preservative-free, all-in-one pure oil-based makeup composition and its preparation method. This invention uses a hydrogenated (styrene / isoprene) copolymer as a viscosity control agent, distearate dimethylammonium lithium montmorillonite as a thickener, and isododecane / isohexadecane with emollient properties as a solvent to obtain a thickened and stable pure oil system. Further formulation of this pure oil-based makeup film-forming agent reduces the amount of film-forming agent used, better meeting the needs of dry and sensitive skin for gentle, long-lasting makeup effects. Furthermore, the oil-control effect can be adjusted by adding powders, creating formulas suitable for dry and oily skin respectively; different skin textures can be achieved through the combination of oils; and sun protection and makeup are integrated through the addition of nourishing and sunscreen ingredients. In addition, the preservative-free system avoids the skin irritation or allergy risks that may be caused by traditional preservatives.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to a preservative-free, all-in-one pure oil-based makeup composition and its preparation method. Background Technology

[0002] The base makeup market is currently one of the fastest-growing segments in the beauty industry, projected to reach 61 billion yuan in size by 2025, with a growth rate far exceeding the industry average. In today's makeup market, consumers demand base makeup that forms a film quickly, controls oil, and provides long-lasting wear. Products not only need to be long-lasting and smudge-proof, but ideally also offer skincare benefits such as moisturizing, repairing, or sun protection. Consumers are increasingly seeking "precise solutions" for their skin problems. For example, oily skin is most concerned about makeup smudging, dry skin worries about creasing, and sensitive skin desires products that are gentle enough. Those with dry and sensitive skin especially need base makeup products that provide long-lasting hydration and barrier repair while avoiding irritating ingredients such as alcohol and mineral oil.

[0003] Traditional oil-in-water foundations are complex in their processes and have lengthy ingredient lists, requiring precise formulation of film-forming agents to enhance makeup longevity. Therefore, it is necessary to develop pure oil-based foundations that do not rely on large amounts of film-forming agents and can maintain makeup longevity. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a pure oil-based makeup base and its preparation method.

[0005] The formulation features of this invention are as follows.

[0006] This invention discovers that using hydrogenated (styrene / isoprene) copolymer as a viscosity control agent, distearate dimethylammonium lithium montmorillonite as a thickener, and isododecane / isohexadecane with emollient properties as a solvent, a thickened and stable pure oil system can be obtained. This pure oil system has the following advantages:

[0007] 1) Reduced amount of film-forming agent used

[0008] Pure oil-based foundations have lower requirements for film-forming agents because their oil-based system naturally possesses waterproof and sweat-proof properties, eliminating the need for large amounts of film-forming agents to maintain makeup longevity. In contrast, traditional oil-in-water foundations, due to their complex processes and lengthy ingredient lists, require precisely formulated film-forming agents to enhance makeup longevity. Pure oil formulas simplify ingredient requirements, better meeting the needs of dry and sensitive skin seeking gentle, long-lasting makeup results.

[0009] The reduced use of film-forming agents significantly enhances the advantages of pure oil-based makeup: the formula is more streamlined, reducing the risk of allergies, making it especially suitable for sensitive skin; the texture is lighter, avoiding a heavy, sticky feel, and enhancing breathability and comfort; at the same time, it reduces reliance on artificial additives, strengthens natural waterproof and sweatproof properties, and improves the product's gentleness and safety. These improvements precisely meet the core needs of dry and sensitive skin for "makeup and skincare in one."

[0010] 2) The addition of powders can regulate the oil-controlling effect, allowing for the creation of formulas suitable for both dry and oily skin.

[0011] By precisely controlling the addition of powder, the formula can be flexibly adapted to the needs of different skin types. For dry skin, the amount of powder can be reduced, focusing on leveraging the nourishing properties of oils, and combined with lightweight powders such as spherical silica to maintain coverage while avoiding dryness and tightness. Hyaluronic acid and other moisturizing ingredients are also incorporated to enhance hydration. For oily skin, the proportion of oil-controlling powders (such as silica and modified starch) can be increased to absorb excess oil, reduce shine, and extend makeup time by utilizing the waterproof properties of the pure oil system. This differentiated design allows pure oil-based foundations to break through traditional limitations, satisfying the hydration needs of dry skin while providing a matte finish for oily skin, achieving a personalized solution of "one system, multiple functions."

[0012] 3) The formula offers flexible skin feel; different skin feels can be achieved through the combination of oils.

[0013] The choice of oils in a pure oil-based makeup base directly affects the skin feel and efficacy, and can be differentiated through formulation. For dry skin, highly moisturizing natural oils such as squalane and shea butter can be added to provide deep hydration and a smooth feel, reducing dryness and tightness; at the same time, lightweight silicone oils such as cyclopentamethoxysiloxane can be added to enhance spreadability and avoid a heavy, sticky feel. For oily skin, it is advisable to combine easily absorbed synthetic esters (such as isononyl isononanoate) or volatile silicone oils to quickly spread and form a film, creating a refreshing matte texture, and utilizing their oil-controlling properties to suppress shine. In addition, by blending different proportions of oils, the product's fluidity, luster, and longevity can be precisely adjusted to meet diverse makeup needs from "hydrated and radiant" to "matte and soft-focus," achieving a personalized "one oil, multiple functions" solution.

[0014] 4) Sunscreen and makeup in one

[0015] Pure oil-based makeup bases achieve an advanced experience of combining sun protection and skincare through the synergistic combination of natural oils and sunscreen ingredients. The core lies in the use of nourishing oils such as squalane and ceramides, which strengthen the skin barrier and combine with physical sunscreens (such as nano-titanium dioxide) to provide broad-spectrum protection and avoid white cast. While correcting skin tone, it also repairs sun damage and reduces the risk of irritation for sensitive skin. This design gives the product both long-lasting moisturizing and gentle sun protection properties, making it especially suitable for dry and sensitive skin, meeting the triple needs of "protection-nourishment-correction." By reducing reliance on film-forming agents, the pure oil system maintains a lightweight feel while creating a natural, radiant, and healthy makeup finish, perfectly meeting consumers' pursuit of high-efficiency, multi-functional base makeup.

[0016] 5) No anti-corrosion system

[0017] By completely eliminating the aqueous phase, the product requires no preservatives, avoiding the skin irritation or allergy risks that traditional preservatives may cause. This formula is especially suitable for sensitive skin, providing a gentle skincare experience while reducing potential burden on the skin. Furthermore, the preservative-free design simplifies the ingredient list, enhancing the product's purity and environmental friendliness, aligning with modern consumers' pursuit of healthy beauty.

[0018] Specifically, the present invention adopts the following technical solution:

[0019] This invention provides a preservative-free, all-in-one oil-based makeup composition, comprising phases A, B, C, D, and E. The components of each phase and their mass percentage in the total makeup system are as follows:

[0020] Phase A includes isododecane / isohexadecane, the amount of which is adjusted according to the amount of each component, and finally added to 100%;

[0021] 3-6%, preferably 4% hydrogenated (styrene / isoprene) copolymer;

[0022] 0-20%, preferably 5% oil; and

[0023] 0-0.1%, preferably 0.01% antioxidant;

[0024] Phase B comprises 1-2%, preferably 2% distearate dimethylammonium lithium montmorillonite;

[0025] 0.4-9%, preferably 1% ester oils; and

[0026] 6-15%, preferably 12% volatile oils;

[0027] Phase C comprises 0-5%, preferably 2%, of a film-forming agent, and

[0028] 0-10%, preferably 5% powder;

[0029] Phase D comprises 0.1-8%, preferably 7%, of a pigment dispersant, and

[0030] 5-13%, preferably 9.13% pigment.

[0031] Phase E includes 0-1%, preferably 0.5%, of tocopheryl acetate; and

[0032] 0-5%, preferably 0.1% oil-soluble active ingredients;

[0033] 0-15% sunscreen;

[0034] 0-0.5%, preferably 0.1% essential oil fragrance.

[0035] As described above, the pure oil-based base makeup includes:

[0036] The oils in phase A include one or more of the following: octyldodecyl alcohol, propylene glycol carbonate, isononyl isononyl acid, caprylic / capric triglyceride, phytosterol / isostearyl / cetearyl alcohol / behenol dimer linoleate, bis-behenol / isostearyl / phytosterol dimer linoleate, cyclopentamethoxysiloxane, sunflower (HELIANTHUS ANNUUS) seed oil, jojoba (SIMMONDSIA CHINENSIS) seed oil, shea butter (BUTYROSPERMUM PARKII), and squalane; the antioxidant is pentaerythritol tetra(bis-tert-butylhydroxyhydrocinnamic acid) ester.

[0037] The ester oils in phase B are selected from one or more of caprylic / capric triglycerides and propylene glycol carbonate, and the volatile oils are selected from one or more of isododecane, cyclopentamethoxysiloxane, and low-viscosity silicone oil.

[0038] The film-forming agent in phase C is selected from one or more of trimethylsiloxysilicate, acrylate / polydimethylsiloxane, acrylate / polytrimethylsiloxane, and methacrylate copolymer; the powder is selected from one or more of silica powder, mica, sericite, methyl methacrylate crosspolymer, talc, nylon-12, and calcium carbonate.

[0039] The pigment dispersant in phase D includes one or more of polyglycerol-2 triisostearate and lauroyl sarcosine isopropyl ester, and the pigment is selected from one or more of CI 77891, CI 77491, CI 77492, and CI 77499;

[0040] The oil-soluble active ingredients in phase E include ACMELLA OLERACEA extract, ceramides, and fragrances.

[0041] The pure oil-based base makeup described above contains 5-10%, preferably 8.4% CI 77891, 0-1%, preferably 0.1% CI 77491, 0-1%, preferably 0.6% CI 77492, and 0-1%, preferably 0.03% CI 77499 as the colorant in phase D.

[0042] The pure oil-based makeup base described above comprises the following components and contents of phases A, B, C, D, and E:

[0043] Phase A: 50.44% isododecane, 8% octyldodecyl alcohol, 4% hydrogenated (styrene / isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester;

[0044] Phase B: Distearate dimethylammonium lithium montmorillonite 2.3%, propylene glycol carbonate 0.8%, isododecane 12%;

[0045] Phase C: 5% silica, 2% mica, 2% trimethylsiloxysilicate;

[0046] Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%;

[0047] Phase E: Tocopheryl acetate 0.5%, Lavender essential oil 0.1%.

[0048] The pure oil-based makeup base described above comprises the following components and contents of phases A, B, C, D, and E:

[0049] Phase A: 51.64% isododecane, 10% octyldodecyl alcohol, 2% squalane, 5% hydrogenated (styrene / isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester;

[0050] Phase B: Distearate dimethylammonium lithium montmorillonite 2.1%, propylene glycol carbonate 0.8%, polydimethylsiloxane 12%;

[0051] C phase: 2% silica, 1% mica;

[0052] Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%;

[0053] Phase E: Tocopheryl acetate 0.5%, Lavender essential oil 0.1%.

[0054] The pure oil-based makeup base described above comprises the following components and contents of phases A, B, C, D, and E:

[0055] Phase A: 47.24% isododecane, 5% octyldodecyl alcohol, 5% hydrogenated (styrene / isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester;

[0056] Phase B: Distearate dimethylammonium lithium montmorillonite 2%, propylene glycol carbonate 0.8%, polydimethylsiloxane 12%;

[0057] C phase: 3% silica, 1% mica;

[0058] Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%;

[0059] Phase E: 4% ethylhexyl methoxycinnamate, 4% ethylhexyl salicylate, 2% bis-ethylhexyloxyphenol methoxyphenyl triazine, 0.5% tocopheryl acetate, and 0.1% lavender essential oil.

[0060] The preparation steps for the pure oil-based makeup base described above are as follows:

[0061] 1) Add the A-phase raw material to the emulsification pot in sequence, heat, stir, and keep warm until the material is uniform and transparent;

[0062] 2) Take a container and add the B-phase raw materials sequentially, then stir and homogenize at room temperature to activate the distearate dimethylammonium lithium montmorillonite. Add the homogenized B-phase material to the emulsification pot and start stirring.

[0063] 3) Start homogenization and stirring, and add the C-phase raw materials to the emulsification pot in sequence;

[0064] 4) The D-phase raw material is ground in advance using a three-roll mill and then added to the emulsifying pot and stirred and homogenized, preferably for 10 minutes;

[0065] 5) Cool the emulsifying pot and add the E-phase raw materials sequentially;

[0066] 6) Take out materials for inspection, and remove them from the pot if they pass the inspection.

[0067] The present invention also provides a method for preparing the pure oil-based base makeup as described above, the preparation steps of which are as follows:

[0068] 1) Add the A-phase raw material to the emulsification pot in sequence, heat, stir, and keep warm until the material is uniform and transparent;

[0069] 2) Take a container and add the B-phase raw materials sequentially, then stir and homogenize at room temperature to activate the distearate dimethylammonium lithium montmorillonite. Add the homogenized B-phase material to the emulsification pot and start stirring.

[0070] 3) Start homogenization and stirring, and add the C-phase raw materials to the emulsification pot in sequence;

[0071] 4) The D-phase raw material is ground in advance using a three-roll mill and then added to the emulsifying pot and stirred to homogenize;

[0072] 5) Cool the emulsifying pot and add the E-phase raw materials sequentially;

[0073] 6) Take out materials for inspection, and remove them from the pot if they pass the inspection. Attached Figure Description

[0074] Figure 1 The photographs of Example 1 at three temperatures show the stability at room temperature, high temperature of 50°C, and low temperature of -18°C.

[0075] Figure 2 The photographs in Example 2 at three temperatures show the stability at room temperature, high temperature of 50°C, and low temperature of -18°C.

[0076] Figure 3 The photographs in Example 3 at three temperatures show the stability at room temperature, high temperature of 50°C, and low temperature of -18°C. Detailed Implementation

[0077] The present invention will be further described below through specific embodiments in order to better understand the present invention, but this does not constitute a limitation on the present invention.

[0078] I. Formula

[0079]

[0080] Phase A: Isododecane / isohexadecane, hydrogenated (styrene / isoprene) copolymer, oils (octyldodecyl alcohol, propylene glycol carbonate, isononyl isononate, caprylic / capric triglyceride, phytosterol / isostearyl / cetearyl alcohol / behenol dioleate, bis-behenol / isostearyl / phytosterol dioleate, cyclopentamethoxysiloxane, sunflower (HELIANTHUS ANNUUS) seed oil, jojoba (SIMMONDSIA CHINENSIS) seed oil, shea butter (BUTYROSPERMUM PARKII), squalane, etc.);

[0081] Phase B: Distearate, lithium dimethylammonium montmorillonite, ester oils (caprylic / capric triglycerides, propylene glycol carbonate, etc.), volatile oils (isododecane, cyclopentasiloxane, low-viscosity silicone oil, etc.).

[0082] C phase: film-forming agents (trimethylsiloxane, acrylates / polydimethylsiloxane, acrylates / polytrimethylsiloxane, methacrylate copolymers, etc.), powders (silica powder, mica, sericite, methyl methacrylate crosspolymer, talc, nylon-12, calcium carbonate, etc.);

[0083] Phase D: Pigment dispersant (polyglycerol-2 triisostearate, lauroyl sarcosine isopropyl ester, etc.), pigment;

[0084] Phase E: Oil-soluble active ingredients refer to substances with specific functions that are added to cosmetics to achieve product needs such as moisturizing, anti-wrinkle, whitening, and soothing repair. These substances are certified by authoritative institutions, legally permitted, and soluble in oils. Examples include: Acerella oleracea extract, ceramides, and fragrances.

[0085] The following table shows a comparison of the raw materials and contents of the examples and comparative examples.

[0086] Table 1. Raw materials and content (%) of the examples

[0087] .

[0088] Table 2 Comparative Example Raw Materials and Content

[0089]

[0090] .

[0091] II. Process

[0092] (I) Example Process:

[0093] 1. Add phase A raw material to the emulsification pot in sequence and heat to 85℃-90℃. Turn on the stirring and keep warm for 30 minutes until the material is uniform and transparent.

[0094] 2. Take a container and add the B phase raw materials sequentially, and stir and homogenize at room temperature for 10 minutes to activate distearate dimethylammonium lithium montmorillonite. Add the material to the emulsification pot and start stirring.

[0095] 3. Start homogenization and stirring, and add the C-phase raw materials to the emulsification tank in sequence;

[0096] 4. Grind the D-phase raw material in advance using a three-roll mill, then add it to the emulsifying pot and stir homogenize for 10 minutes;

[0097] 5. Cool to 45℃, then add the E-phase raw materials sequentially;

[0098] 6. Take samples for testing; those that pass the test are removed from the pot.

[0099] (II) Comparative Example Process:

[0100] 1. Add the A phase raw material sequentially to the emulsifying pot, heat to 75-80℃, and stir homogenously for 10 minutes;

[0101] 2. Add phase B to the emulsifying pot;

[0102] 3. Pre-dissolve phase C until it is homogeneous and transparent before adding it to the emulsification pot;

[0103] 4. Grind the D-phase raw material in advance using a three-roll mill, and then add it to the emulsifying pot;

[0104] 5. Add the E-phase raw materials sequentially to the aqueous phase pot and heat to 75-80℃;

[0105] 6. Dissolve the F phase raw material in advance into a uniform and transparent liquid, disperse the G phase raw material in advance, and then add the pretreated material into the aqueous phase pot;

[0106] 7. Slowly pump the aqueous phase into the emulsifying pot and homogenize for 10 minutes to make the material uniform and delicate;

[0107] 8. Take out materials for inspection, and remove those that pass the inspection from the pot.

[0108] III. Test Methods and Data

[0109] 1) Stability Testing

[0110] Examples 1, 2, and 3 all showed good stability of the reaction formulation at room temperature, 50°C, and -18°C, with no oil separation or stratification observed (see Example 3). Figure 1 , Figure 2 , Figure 3 ).

[0111] Twenty volunteers aged 20-30 were randomly selected and divided into six groups of five. These four groups corresponded to Example 1 and Comparative Example 1, respectively.

[0112] Based on the volunteers' experience using the corresponding foundation samples, the functionality was rated (out of 10, with the average score for each group based on the test values ​​within the group).

[0113] Test method: After cleaning the volunteers' hands, they sat quietly for 30 minutes and applied Example 1 and Comparative Example 1 to both sides of their face. The speed of film formation was observed and scored. After 5 minutes, tissues were placed over both sides of the face and gently patted. The amount of material removed by the tissues was observed and scored.

[0114] Film-forming speed rating criteria: It feels like it forms a film very quickly, and there is almost no film left on the tissue: 8-10;

[0115] It can form a film, but the process is relatively slow, and less material is left on the tissue: 6-8;

[0116] Film formation is very slow, or there is almost no film formation, and the material is easily carried away: <6;

[0117] Use a spray bottle to spray water evenly on your face and observe the condition of your base makeup. Then, use a new tissue to cover both sides of your face and gently pat them. Observe the residue that comes off the tissue.

[0118] Waterproof rating: No significant change in base makeup, almost no residue left on tissue: 8-10;

[0119] The base makeup is relatively intact, with little residue left on the tissue: 6-8;

[0120] The base makeup shows signs of dissolution or is easily removed: <6;

[0121] Test scoring results:

[0122] .

[0123] II) Oil control, makeup longevity, and moisturizing test

[0124] Oil control and makeup longevity test

[0125] Twenty volunteers aged 20-30 with oily skin were randomly selected and divided into four groups of five. These six groups corresponded to Example 1 and Comparative Example 1, respectively.

[0126] Based on the volunteers' experience using the corresponding foundation samples, the oil control and makeup lasting power were rated (out of 5 points; the average score for each group was taken based on the test values ​​within the group).

[0127] Test method: After cleaning the volunteers' faces, they sat quietly for 30 minutes. Example 1 and Comparative Example 1 were applied to both sides of the face, and the volunteers wore makeup for 4 hours. The oil-control effect was observed and scored.

[0128] Oil control and makeup longevity rating criteria: Base makeup is relatively intact: 4-5;

[0129] Oily skin, but good foundation retention: 3-4;

[0130] Noticeable patchiness in foundation makeup: <3

[0131] Moisturizing test:

[0132] Twenty volunteers aged 20-30 with dry skin were randomly selected and divided into four groups of five. These six groups corresponded to Example 1 and Comparative Example 2, respectively.

[0133] Based on the volunteers' experience using the corresponding foundation samples, the moisturizing properties were rated (out of 5 points; the average of the test values ​​within each group was taken).

[0134] Test method: The volunteers cleaned their faces, sat quietly for 30 minutes, applied Example 1 and Comparative Example 2 to the left and right sides of their faces, wore makeup for 4 hours, observed the oil control effect, and scored it.

[0135] Moisturizing and hydrating rating criteria: Base makeup is relatively intact, with no obvious tightness: 4-5;

[0136] Slight damage to foundation: 3-4;

[0137] Problems such as powder caking and powder floating occur: <3

[0138] Test scoring results:

[0139] .

[0140] IV. Conclusion

[0141] Examples 1 and 2 are both formulations that fall within the formulation range.

[0142] The comparison between Example 1 and Comparative Example 1 shows that even with an increased amount of powder, a pure oil-based formula can still achieve oil control and long-lasting makeup, and it is more effective at controlling oil than a water-in-oil system.

[0143] Example 2 and Comparative Example 1 show that when the types of oils are properly combined, the skin is moisturized and nourished, which is more moisturizing than the water-in-oil system.

[0144] Examples 1 and 2 illustrate that both have film-forming, waterproof, and sweatproof properties, and pure oil-based makeup can be formulated to suit various skin types by adjusting the type of oil, powder, and amount added.

Claims

1. A pure oil-based foundation, characterized in that, The pure oil-based base makeup consists of phases A, B, C, D, and E. The components of each phase and their mass percentage in the total base makeup system are as follows: Phase A includes: 3-6%, preferably 4% hydrogenated (styrene or isoprene) copolymer; 0-20%, preferably 3-8%, for example, 5% oil; and 0-0.1%, preferably 0.005-0.02%, for example, 0.01% antioxidant; The amount of isododecane or isohexadecane is increased to 100%; Phase B includes: 1-2%, preferably 2% distearate dimethylammonium lithium montmorillonite; 0.4-9%, preferably 0.8-1.5%, for example, 1% ester oils; and 6-16%, preferably 10-14%, for example, 12% volatile oils; Phase C includes: 0-5%, preferably 2% film-forming agent, and 0-10%, preferably 3-8%, for example, 5% powder; Phase D includes: 0.1-10%, preferably 6-8%, for example 7% pigment dispersant, and 5-13%, preferably 8-10%, for example, 9% pigment. Phase E includes: 0-1%, preferably 0.4-0.6%, for example 0.5% tocopheryl acetate; and 0-5%, preferably 0.05-0.2%, for example, 0.1% of oil-soluble active ingredients; 0-15% sunscreen; 0-0.5%, preferably 0.05-0.2%, for example, 0.1% essential oil fragrance.

2. The pure oil-based base makeup according to claim 1, characterized in that, The oils in phase A include one or more of the following: octyldodecyl alcohol, propylene glycol carbonate, isononyl isononyl acid, caprylic / capric triglyceride, phytosterol / isostearyl / cetearyl alcohol / behenol dimer linoleate, bis-behenol / isostearyl / phytosterol dimer linoleate, cyclopentamethoxysiloxane, sunflower (HELIANTHUS ANNUUS) seed oil, jojoba (SIMMONDSIA CHINENSIS) seed oil, shea butter (BUTYROSPERMUM PARKII), and squalane; the antioxidant is pentaerythritol tetra(bis-tert-butylhydroxyhydrocinnamic acid) ester. The ester oils in phase B are selected from one or more of caprylic or capric triglycerides and propylene glycol carbonate, and the volatile oils are selected from one or more of isododecane, cyclopentamethoxysiloxane, and low-viscosity silicone oil. The film-forming agent in phase C is selected from one or more of trimethylsiloxysilicate, acrylates or polydimethylsiloxane, acrylates or polytrimethylsiloxane, and methacrylate copolymers; the powder is selected from one or more of silica powder, mica, sericite, methyl methacrylate crosspolymer, talc, nylon-12, and calcium carbonate. The pigment dispersant in phase D includes one or more of polyglycerol-2 triisostearate and lauroyl sarcosine isopropyl ester, and the pigment is selected from one or more of CI 77891, CI 77491, CI 77492, and CI 77499; The oil-soluble active ingredients in phase E include ACMELLA OLERACEA extract, ceramides, and fragrances.

3. The pure oil-based base makeup according to claim 1 or 2, characterized in that, The colorant in the D phase comprises 5-10%, preferably 8.4% CI 77891; 0-1%, preferably 0.1% CI 77491; 0-1%, preferably 0.6% CI 77492; and 0-1%, preferably 0.03% CI 77499.

4. The pure oil-based base makeup according to any one of claims 1-3, characterized in that, The composition and content of phases A, B, C, D, and E in the pure oil-based makeup are as follows: Phase A: 50.44% isododecane, 8% octyldodecyl alcohol, 4% hydrogenated (styrene or isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester; Phase B: Distearate dimethylammonium lithium montmorillonite 2.3%, propylene glycol carbonate 0.8%, isododecane 12%; Phase C: 5% silica, 2% mica, 2% trimethylsiloxysilicate; Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%; Phase E: Tocopheryl acetate 0.5%, Lavender essential oil 0.1%.

5. The pure oil-based base makeup according to any one of claims 1-3, characterized in that, The composition and content of phases A, B, C, D, and E in the pure oil-based makeup are as follows: Phase A: 51.64% isododecane, 10% octyldodecyl alcohol, 2% squalane, 5% hydrogenated (styrene or isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester; Phase B: Distearate dimethylammonium lithium montmorillonite 2.1%, propylene glycol carbonate 0.8%, polydimethylsiloxane 12%; C phase: 2% silica, 1% mica; Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%; Phase E: Tocopheryl acetate 0.5%, Lavender essential oil 0.1%.

6. The pure oil-based base makeup according to any one of claims 1-3, characterized in that, The composition and content of phases A, B, C, D, and E in the pure oil-based makeup are as follows: Phase A: 47.24% isododecane, 5% octyldodecyl alcohol, 5% hydrogenated (styrene or isoprene) copolymer, 0.01% pentaerythritol tetra(bis-tert-butylhydroxyhydrogenated cinnamic acid) ester; Phase B: Distearate dimethylammonium lithium montmorillonite 2%, propylene glycol carbonate 0.8%, polydimethylsiloxane 12%; C phase: 3% silica, 1% mica; Phase D: Polyglycerol-2 triisostearate 5.3%, CI 77891 6.84%, CI 77491 0.6%, CI 77492 0.1%, CI 77499 0.01%; Phase E: 4% ethylhexyl methoxycinnamate, 4% ethylhexyl salicylate, 2% bis-ethylhexyloxyphenol methoxyphenyl triazine, 0.5% tocopheryl acetate, and 0.1% lavender essential oil.

7. The pure oil-based base makeup according to any one of claims 1-6, characterized in that, The preparation steps are as follows: 1) Add the A-phase raw material to the emulsification pot in sequence, heat, stir, and keep warm until the material is uniform and transparent; 2) Take a container and add the B phase raw materials in sequence, stir and homogenize at room temperature to activate distearate dimethylammonium lithium montmorillonite, add the homogenized B phase material to the emulsification pot, and start stirring; 3) Start homogenization and stirring, and add the C-phase raw materials to the emulsification pot in sequence; 4) The D-phase raw material is ground in advance using a three-roll mill and then added to the emulsifying pot and stirred to homogenize; 5) Cool the emulsifying pot and add the E-phase raw materials sequentially; 6) Take out materials for inspection, and remove them from the pot if they pass the inspection.

8. The method for preparing pure oil-based base makeup as described in claim 7, characterized in that, In step 1), the A-phase raw material is added to the emulsifying pot in sequence and heated to 85℃-90℃.

9. The method for preparing pure oil-based base makeup as described in claim 6, characterized in that, The heat preservation time in step 1) is 30 minutes; In step 2), the homogenization time at room temperature is 10 minutes.

10. The method for preparing pure oil-based base makeup as described in claim 7, characterized in that, In step 5), the emulsifying pot is cooled to 45°C.

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