Oil-in-water liquid foundation and preparation and application thereof

Abstract

The invention provides an oil-in-water liquid foundation. The invention also provides a preparation method of the oil-in-water liquid foundation. The invention further provides the oil-in-water liquid foundation prepared by the preparation method. According to the oil-in-water liquid foundation as well as the preparation and the application thereof, the prepared liquid foundation is clear and natural in makeup feeling, simple and rapid in makeup and lasting in makeup effect, and meanwhile, compared with a traditional water-in-oil preparation process, the preparation process is simple and low in cost.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and relates to an oil-in-water foundation liquid and a preparation and application thereof, and specifically relates to an oil-in-water foundation liquid containing titanium dioxide treated with cell phospholipids and a preparation and application thereof. Background Art

[0002] Liquid foundation is a kind of facial beauty cosmetics, which is presented in the form of powdered oil-in-water (O / W) type or water-in-oil (W / O) type, and is an emulsion-like cosmetic with added powder. (W / O) oil-in-water liquid foundation feels heavy and powdery when applied, and has poor air permeability on the skin surface, which puts a burden on the health of the skin. Therefore, preparing a refreshing and breathable (O / W) water-in-oil liquid foundation can well improve the problem of heavy greasy feeling and poor air permeability of water-in-oil foundation. However, the existing water-in-oil liquid foundation on the market only solves part of the problems of air permeability and greasy skin feel. The existing water-in-oil foundation on the market has poor spreadability and makeup durability, which greatly reduces the use feeling of water-in-oil liquid foundation. Moreover, the preparation process of traditional water-in-oil liquid foundation is complicated and difficult to operate.

[0003] In addition, the powder commonly used in foundation liquid for modification is titanium dioxide that has been surface treated. Surface treatment can improve the lipophilic or hydrophilic properties of the powder. However, the titanium dioxide used in the oil-in-water products on the market is mostly treated with hydrophobic or lipophilic surfaces, which has low moisture content and poor film-forming effect on the skin, lacking a refreshing feeling and long-lasting makeup. In other words, the oil-in-water products on the market can only meet one of the needs, and cannot take both into account and meet the basic makeup needs of consumers. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an oil-in-water foundation and its preparation and application, which can prepare an oil-in-water foundation with the characteristics of light makeup effect, easy application, long-lasting makeup, etc.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present invention provides an oil-in-water foundation, comprising an oil phase component and an aqueous phase component, wherein the oil phase component comprises an oil-in-water emulsifier, cell phospholipid-modified titanium dioxide and a colorant, and the aqueous phase component comprises an oil-in-water emulsifier.

[0006] The second aspect of the present invention provides a method for preparing an oil-in-water foundation, comprising the following steps:

[0007] 1) mixing the colorant, the water-in-oil emulsifier and the cell phospholipid-modified titanium dioxide uniformly to obtain an oil phase;

[0008] 2) mixing the oil-in-water emulsifier uniformly to obtain a water phase;

[0009] 3) Adding the water phase to the oil phase for a first stirring and mixing, and then stirring and mixing for a second time to obtain a first oil-in-water emulsion to provide the desired oil-in-water foundation.

[0010] The third aspect of the present invention provides an oil-in-water foundation prepared by the above method.

[0011] As described above, the oil-in-water foundation liquid and its preparation and application provided by the present invention have the following beneficial effects compared with the prior art:

[0012] (1) The present invention provides an oil-in-water foundation liquid and its preparation and application. In view of the shortcoming of poor makeup holding performance of the oil-in-water formulation, the composition of the oil-in-water formulation and the formulation manufacturing process are modified and optimized. A titanium dioxide with a special surface treatment (cell phospholipid) is selected to prepare an (O / W) oil-in-water foundation liquid. The cell phospholipid Specifically refers to the phosphorylcholine series polymers, because of their similarity to the phospholipid structure that constitutes the basic unit of the cell membrane, it is also called "artificial cell membrane". It has a structure similar to the phospholipids in the human cell membrane, has excellent biocompatibility with human tissues and blood, and exhibits a "molecular pinning effect". It can form a breathable and water-resistant biofilm on the skin surface. This biofilm can help the skin improve its ability to lock in moisture and improve the moisturizing effect of makeup. Its unique "molecular pinning effect" also makes the product have a better skin feel and efficient makeup-holding effect, creating a long-lasting and light makeup.

[0013] (2) The present invention provides an oil-in-water foundation liquid and its preparation and application, which adopts cell phospholipid-modified titanium dioxide. In terms of process, both oil phase and water phase can be added to introduce the product, which greatly optimizes the production process of the product, reduces production time and production cost, greatly improves product production capacity, and greatly facilitates production.

[0014] (3) The present invention provides an oil-in-water foundation liquid and its preparation and application. The conditions required for its formation are relatively special. The appropriate water-in-oil emulsifier polysorbate-80 is selected and compounded with the oil-in-water auxiliary emulsifier sorbitan oleate to form an oil-in-water emulsion under low-speed stirring. The moisturizing ingredients and emollient oils are reasonably matched to provide excellent moisturizing and makeup effect. The texture is soft and silky, light and compliant, moisturizing and waterproof, and the makeup effect is long-lasting.

[0015] (4) The present invention provides an oil-in-water liquid foundation and its preparation and application. The prepared liquid foundation has a clear and natural makeup feeling, is easy and quick to apply, and has a long-lasting makeup effect. At the same time, the preparation process is simpler than the traditional oil-in-water preparation process and has low cost. It has the characteristics of light makeup effect, easy application, and long-lasting makeup. It also has the advantages of light skin feeling, moisturizing and fitting, easy to apply, waterproof and sweat-proof, not easy to float powder and fall off, and nourishing the skin. It is a refreshing oil-in-water liquid foundation with good spreadability and excellent makeup lasting performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1a , 1b The figure shows the oily or demulsified condition of the foundation liquid in Example 4 of the present invention after one month, wherein: Figure 1a Prepare liquid foundation samples for Example 1, Comparative Examples 1 and 2, Figure 1b Liquid foundation samples were prepared for Comparative Examples 4, 5, and 6.

[0017] Figure 2 The figure shows a comparison of the application feeling of the liquid foundation samples in Example 5 of the present invention.

[0018] Figure 3 The figure shows the comparison of the moisture content of the skin after applying the foundation sample in Example 5 of the present invention.

[0019] Figure 4 The figure shows the comparison of skin moisture content 2 hours after the foundation sample in Example 5 of the present invention is applied.

[0020] Figure 5 The figure shows a comparison of the stickiness of the skin after applying the foundation sample in Example 5 of the present invention.

[0021] Figure 6 The figure shows a comparison of the skin absorption feeling after applying the foundation sample in Example 5 of the present invention.

[0022] Figure 7a , 7b 7c and 7d are comparison diagrams of skin gloss and concealing power after using the foundation sample in Example 6 of the present invention, wherein: Figure 7a The glossiness and concealing power of the foundation sample prepared in Comparative Example 1 are as follows: Figure 7b The glossiness and concealing power of the foundation sample prepared in Comparative Example 2 are as follows: Figure 7c The glossiness and concealing power of the foundation sample prepared in Example 1, Figure 7d The glossiness and concealing power of the foundation sample prepared in Example 1 when applied.

[0023] Figure 8 The figure shows a comparison of the 8H makeup effect in Example 6 of the present invention.

[0024] Figure 9a , 9b 9c shows a comparison diagram of product migration evaluation in Example 6 of the present invention, wherein: Figure 9a This is a comparison diagram of the foundation samples prepared in Example 1, Comparative Examples 1 and 2 just applied to the arm. Figure 9b This is a comparison diagram of the foundation liquid samples prepared in Example 1, Comparative Examples 1 and 2 when spraying water. Fig.9c This is a comparison diagram of the liquid foundation samples prepared in Example 1, Comparative Examples 1 and 2 when wiping. DETAILED DESCRIPTION

[0025] The inventor of the present application has developed an oil-in-water liquid foundation. A method for preparing the oil-in-water liquid foundation is also provided. The liquid foundation prepared by using water-oil amphiphilic titanium dioxide treated with cell phospholipids has better makeup durability and skin-fitting properties, better stability in formula application, and the prepared formula has better skin feel and anti-migration performance. At the same time, the preparation process is simpler and less expensive than the traditional oil-in-water preparation process, which can greatly simplify the traditional process, shorten the process time, and save production costs. The present invention is thus completed, which is specifically described as follows.

[0026] Definition of terms

[0027] Colorants, concealing agents, and sunscreens: The purpose of using cosmetic raw materials in cosmetics. Colorants provide color to cosmetics and play a coloring role; concealing agents provide cosmetics with covering ability, so that cosmetics have the function of covering skin surface blemishes or spots; sunscreens provide cosmetics with sun protection ability, so that cosmetics have the function of absorbing, reflecting, and scattering ultraviolet rays to protect the skin from sunburn, etc.

[0028] Emulsifier: An organic molecule has a hydrophilic group at one end and a lipophilic group at the other end. This type of molecule can connect oil and water to form a relatively stable system, so it is called an emulsifier.

[0029] Water-oil amphiphilic type: It contains both a hydrophilic head and a hydrophobic tail, showing good hydrophilicity and lipophilicity, that is, it is water-oil amphiphilic.

[0030] Eight-hour makeup-lasting effect: Wear makeup for 8 hours, observe the completeness of the makeup, and evaluate the makeup-lasting effect.

[0031] Suspension thickener: a substance that can increase the viscosity of latex and liquid. The thickener can increase the viscosity of the system, so that the system maintains a uniform and stable suspension state or emulsion state, or forms a gel.

[0032] Unless otherwise specified, the following words, phrases and symbols used in this specification generally have the meanings described below.

[0033] In general, the nomenclature used herein (e.g., IUPAC nomenclature) and the laboratory procedures described below (including for cell culture, organic chemistry, analytical chemistry, and pharmacology, etc.) are those well known and commonly used in the art. Unless otherwise defined, all scientific and technical terms used herein in conjunction with the present disclosure described herein have the same meanings as commonly understood by those skilled in the art. In addition, in the claims and / or the specification, when the term "one" or "an" is used in conjunction with the term "comprising" or a noun, its meaning may be "one", but it is also consistent with the meaning of "one or more", "at least one" and "one or more than one". Similarly, the term "another" or "other" can mean at least a second or more.

[0034] It should be understood that whenever various aspects are described herein with the terms "including" or "comprising," other similar aspects described by "consisting of" and / or "consisting essentially of" are also provided.

[0035] The first aspect of the present invention provides an oil-in-water foundation, comprising an oil phase component and a water phase component, wherein the oil phase component comprises an oil-in-water emulsifier, cell phospholipid-modified titanium dioxide and a colorant, and the water phase component comprises an oil-in-water emulsifier.

[0036] In the above-mentioned oil-in-water foundation, the weight percentage of the water-in-oil emulsifier to the total amount of the oil-in-water foundation is 1-5wt%, specifically 1-2wt%, 2-3wt%, 3-4wt%, 4-5wt%, 2-4wt%.

[0037] In the above oil-in-water foundation, the water-in-oil emulsifier is sorbitan oleate.

[0038] In the above-mentioned oil-in-water foundation, the cellular phospholipid-modified titanium dioxide is the phosphorylcholine polymer-modified titanium dioxide recorded in the "An organic surface treatment method for titanium dioxide with a phosphorylcholine polymer" with patent application number 202211321350.9.

[0039] In a specific embodiment, the phosphorylcholine polymer in the cell phospholipid-modified titanium dioxide is selected from at least one of polyquaternium-51, polyquaternium-61, polyquaternium-64, and polyquaternium-65.

[0040] In a further specific embodiment, the phosphorylcholine polymer is polyquaternium-51 (PQ-51, CAS No. 125275-25-4).

[0041] In the above-mentioned oil-in-water foundation, the modification method of the cell phospholipid-modified titanium dioxide is carried out according to the preparation method of phosphorylcholine polymer-modified titanium dioxide recorded in "A method for organic surface treatment of titanium dioxide with phosphorylcholine polymer" with patent application number 202211321350.9.

[0042] Specifically, the method is selected from any of the following:

[0043] Method (I) is a dry preparation method, comprising the following steps:

[0044] (A) Dispersion: dispersing inorganic powder to obtain titanium dioxide powder with a specific particle size;

[0045] (B) Organic surface treatment: using gas powder equipment, adding phosphorylcholine polymer at a constant addition amount during air flow pulverization of titanium dioxide powder to obtain phosphorylcholine polymer modified titanium dioxide;

[0046] Method (II) is a wet preparation method, comprising the following steps:

[0047] (C) Dispersion premixing: premixing the titanium dioxide powder with the dispersant to obtain a titanium dioxide dispersion slurry;

[0048] (D) Organic surface treatment: dissolving the phosphorylcholine polymer in a first solvent, and then adding the solvent to the titanium dioxide dispersion to obtain a first slurry;

[0049] (E) Filtration and crushing: The first slurry is washed and filtered, and the filter cake is dried and crushed to obtain phosphorylcholine polymer-modified titanium dioxide.

[0050] The corresponding preparation conditions of the method described are the same as the preparation method of phosphorylcholine polymer modified titanium dioxide recorded in "A method for organic surface treatment of titanium dioxide with phosphorylcholine polymer".

[0051] In the above-mentioned oil-in-water foundation, the weight percentage of the cell phospholipid-modified titanium dioxide in the total amount of the oil-in-water foundation is 4-10wt%, specifically 4-5wt%, 5-6wt%, 6-7wt%, 7-8wt%, 8-9wt%, 9-10wt%, 5-9wt%, 6-8wt%.

[0052] The cell phospholipid modified titanium dioxide has water-oil amphiphilic properties.

[0053] In the above oil-in-water foundation, the colorant is cellular phospholipid-treated iron oxide.

[0054] In a specific embodiment, the cell phospholipid-treated iron oxide is selected from at least one of cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red, and cell phospholipid-treated iron oxide black.

[0055] In a further specific embodiment, the cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red, and cell phospholipid-treated iron oxide black are modified according to the preparation method of phosphorylcholine polymer-modified titanium dioxide described in the patent application number 202211321350.9 "A method for organic surface treatment of titanium dioxide by phosphorylcholine polymer", respectively. The cell phospholipid is a phosphorylcholine polymer recorded in the patent application number 202211321350.9 "A method for organic surface treatment of titanium dioxide by phosphorylcholine polymer".

[0056] In the above oil-in-water foundation, the weight percentage of the colorant to the total amount of the oil-in-water foundation is 0.5-2wt%, specifically 0.5-1wt%, 1-2wt%, 0.8-1.6wt%, 0.6-1.8wt%, 1.2-1.4wt%.

[0057] In the above oil-in-water foundation, the oil phase component also includes at least one of an emollient or a thickening stabilizer.

[0058] In a specific embodiment, the oil phase ingredients also include emollient oils and thickening stabilizers.

[0059] In a specific embodiment, the weight percentage of the emollient oil to the total amount of the oil-in-water foundation is 8-25wt%, such as 8-10wt%, 10-15wt%, 15-20wt%, 20-25wt%, 10-20wt%, 12-18wt%, 14-16wt%.

[0060] In a specific embodiment, the emollient oil is selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythritol tetracocoate, isostearyl neopentanoate, isopropyl myristate, polydimethylsiloxane, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl polytrimethicone.

[0061] In a specific embodiment, the weight percentage of the thickening stabilizer to the total amount of the oil-in-water foundation is 0.1-0.5wt%, such as 0.1-0.2wt%, 0.2-0.3wt%, 0.3-0.4wt%, 0.4-0.5wt%, 0.2-0.3wt%, 0.3-0.5wt%.

[0062] In a specific embodiment, the thickening stabilizer is selected from at least one of bentonite, hydroxyethyl cellulose, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer (CAS No. 111286-86-3), polyacrylate cross-linked polymer-6 or magnesium aluminum silicate.

[0063] In a further specific embodiment, the thickening stabilizer is hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer.

[0064] In the above oil-in-water foundation, the oil-in-water emulsifier is polysorbate-80.

[0065] In the above oil-in-water foundation, the weight percentage of the oil-in-water emulsifier to the total amount of the oil-in-water foundation is 1-5wt%, specifically 1-2wt%, 2-3wt%, 3-4wt%, 4-5wt%, 2-4wt%.

[0066] In the above oil-in-water foundation, the water phase component also includes at least one of a moisturizer, a suspending thickener, and water.

[0067] In a specific embodiment, the water phase component further includes a moisturizer, a suspending thickener and water.

[0068] In a specific embodiment, the weight percentage of the moisturizer to the total amount of the oil-in-water foundation is 8-15wt%, specifically 8-10wt%, 10-12wt%, 12-14wt%, 14-15wt%, 9-14wt%, 10-13wt%.

[0069] In a specific embodiment, the moisturizer is selected from at least one of 1,3-butylene glycol, glycerol, polyethylene glycol-12, glyceryl polyether-26, dipropylene glycol, tremella polysaccharide, sodium hyaluronate, methylpropanediol, sodium pyrrolidonecarboxylate, xylitol or trehalose.

[0070] In a specific embodiment, the weight percentage of the suspending thickener to the total amount of the oil-in-water foundation is 0.1-0.5wt%, such as 0.1-0.2wt%, 0.2-0.3wt%, 0.3-0.4wt%, 0.4-0.5wt%, 0.2-0.3wt%, 0.3-0.5wt%.

[0071] In a specific embodiment, the suspension thickener is selected from at least one of xanthan gum, bentonite, magnesium aluminum silicate, guar gum, carbomer or sodium carboxymethyl cellulose.

[0072] In a further specific embodiment, the suspension thickener is xanthan gum.

[0073] In a specific embodiment, the balance of the oil-in-water liquid foundation, except for other ingredients, is water.

[0074] In a further specific embodiment, the weight percentage of water in the total amount of the oil-in-water foundation is 40-50wt%, specifically 40-45wt%, 45-48wt%, 48-50wt%, 45-48wt%, 46-47wt%, 42-48wt%, for example 40wt%, 41wt%, 42wt%, 43wt%, 44wt%, 45wt%, 46wt%, 46.54wt%, 47wt%, 48wt%, 49wt%, 50wt%.

[0075] In one specific embodiment, the water is deionized water.

[0076] In the above-mentioned oil-in-water foundation, the oil-in-water foundation also includes antioxidants, inorganic salts, metal ion chelating agents, preservatives, skin care ingredients, and auxiliary ingredients.

[0077] In a specific embodiment, the weight percentage of the antioxidant in the total amount of the oil-in-water foundation is 0.1-0.5wt%, such as 0.1-0.3wt%, 0.3-0.5wt%, 0.2-0.4wt%.

[0078] In a specific embodiment, the antioxidant is tocopherol acetate.

[0079] In a specific embodiment, the weight percentage of the inorganic salt to the total amount of the oil-in-water foundation liquid is 0.1-1.0wt%, specifically 0.1-0.3wt%, 0.3-1.0wt%, preferably 0.3-1.0wt%.

[0080] In one specific embodiment, the inorganic salt is a commonly used inorganic salt, such as sodium chloride.

[0081] In a specific embodiment, the weight percentage of the metal ion chelating agent to the total amount of the oil-in-water foundation is 0-0.5wt%, such as 0-0.1wt%, 0.01-0.1wt%, 0.1-0.2wt%, 0.2-0.3wt%, 0.3-0.4wt%, 0.4-0.5wt%, 0-0.2wt%, 0-0.3wt%, 0-0.4wt%, 0.1-0.4wt%, 0.1-0.3wt%.

[0082] In a specific embodiment, the metal ion chelating agent is disodium ethylenediaminetetraacetate (EDTA-2Na).

[0083] In a specific embodiment, the weight percentage of the preservative in the total amount of the oil-in-water foundation is 0.2-1wt%, such as 0.2-0.4wt%, 0.4-0.6wt%, 0.6-0.8wt%, 0.8-1wt%, 0.3-0.9wt%, 0.4-0.8wt%, 0.5-0.7wt%.

[0084] In one specific embodiment, the preservative is phenoxyethanol.

[0085] In a specific embodiment, the weight percentage of the skin care ingredients in the total amount of the oil-in-water foundation is 0.05-5wt%, such as 0.05-0.1wt%, 0.1-1wt%, 1-5wt%, 0.1-0.5wt%, 0.5-1wt%, 1-3wt%, 3-5wt%.

[0086] In a specific embodiment, the skin care ingredient is a cellular phospholipid aqueous solution.

[0087] The cell phospholipids in the cell phospholipid aqueous solution are the phosphorylcholine polymers described in the patent application number 202211321350.9, "A method for treating the organic surface of titanium dioxide with a phosphorylcholine polymer". The weight percentage concentration of the cell phospholipids in the cell phospholipid aqueous solution is 3-4wt%, specifically 3-3.5wt%, 3.5-4wt%, 3.4-3.6wt%, preferably 3.4-3.6wt%, and more preferably 3.5wt%.

[0088] In a specific embodiment, the weight percentage of the auxiliary ingredient in the total amount of the water-in-oil foundation is 0-0.1wt%, such as 0-0.05wt%, 0.05-0.1wt%, 0-0.02wt%, 0-0.06wt%, 0-0.08wt%, 0.02-0.1wt%, 0.06-0.1wt%, 0.08-0.1wt%, 0.01-0.1wt%.

[0089] In a specific embodiment, the auxiliary ingredient is flavor.

[0090] In a further specific embodiment, the essence is wood rose essence.

[0091] The second aspect of the present invention provides a method for preparing an oil-in-water foundation, comprising the following steps:

[0092] 1) mixing the colorant, the water-in-oil emulsifier and the cell phospholipid-modified titanium dioxide uniformly to obtain an oil phase;

[0093] 2) mixing the oil-in-water emulsifier uniformly to obtain a water phase;

[0094] 3) Adding the water phase to the oil phase for a first stirring and mixing, and then stirring and mixing for a second time to obtain a first oil-in-water emulsion to provide the desired oil-in-water foundation.

[0095] In the above step 1), a moisturizing oil and an antioxidant are also added. The moisturizing oil includes a first part of the moisturizing oil and a second part of the moisturizing oil. The first part of the moisturizing oil is mixed evenly with a colorant and cell phospholipid-modified titanium dioxide. The second part of the moisturizing oil, an oil-in-water emulsifier and an antioxidant are added to the obtained color paste and stirred and mixed evenly to obtain an oil phase.

[0096] In a specific embodiment, the first part of the emollient oil and the second part of the emollient oil are both selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythritol tetracocoate, isostearyl neopentanoate, isopropyl myristate, polydimethylsiloxane, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl polytrimethicone.

[0097] In a further specific embodiment, the first part of the emollient oil is isononyl isononanoate.

[0098] In a further specific embodiment, the second part of the emollient oil is selected from at least one of cyclopentasiloxane, C12-15 alcohol benzoate, octyldodecanol, polydimethylsiloxane or phenyl trimethicone.

[0099] In a specific embodiment, the mass ratio of the first part of the moisturizing oil and the second part of the moisturizing oil is 2:19-21, specifically 2:19-20, 2:20-21, 2:19.5-20.5, preferably 2:19.5-20.5.

[0100] In a specific embodiment, the uniform mixing time is 4-6 min, such as 4-5 min, 5-6 min, 4.5-5.5 min, preferably 4.5-5.5 min, and more preferably 5 min.

[0101] In a specific embodiment, the stirring rate for uniform mixing is 1500-2500 rpm, such as 1500-2000 rpm, 2000-2500 rpm, 1800-2200 rpm, preferably 1800-2200 rpm, and more preferably 2000 rpm.

[0102] In a specific embodiment, the time for stirring and mixing evenly is 10-15 min, such as 10-11 min, 11-12 min, 12-13 min, 12-14 min, 14-15 min, 11-14 min.

[0103] In a specific embodiment, the stirring rate for uniform mixing is 1500-2500 rpm, such as 1500-2000 rpm, 2000-2500 rpm, 1800-2200 rpm, preferably 1800-2200 rpm, and more preferably 2000 rpm.

[0104] In the above step 2), a humectant, a suspending thickener, water, an inorganic salt, and a metal ion chelating agent are also added, and the water-in-oil emulsifier, the humectant, the suspending thickener, water, an inorganic salt, and a metal ion chelating agent are mixed uniformly to obtain an aqueous phase.

[0105] In a specific embodiment, the uniform mixing time is 4-6 min, such as 4-5 min, 5-6 min, preferably 5 min.

[0106] In a specific embodiment, the stirring rate for uniform mixing is 1000-2000 rpm, such as 1000-1400 rpm, 1400-2000 rpm, 1200-1600 rpm, preferably 1200-1600 rpm, and more preferably 1400 rpm.

[0107] In one embodiment, the mixing is uniform until the mixture becomes clear and transparent.

[0108] In the above step 3), the water phase is slowly and uniformly added into the oil phase.

[0109] In the above step 3), the stirring rate of the first stirring and mixing is 1500-2500 rpm, specifically 1500-2000 rpm, 2000-2500 rpm, 1800-2200 rpm, preferably 1800-2200 rpm, more preferably 2000 rpm. The first stirring is slow stirring.

[0110] In the above step 3), the first stirring and mixing time is 4-6 min, specifically 4-5 min, 5-6 min, preferably 5 min.

[0111] In the above step 3), the stirring rate of the second stirring and mixing is 3500-4500 rpm, specifically 3500-4000 rpm, 4000-4500 rpm, 3800-4200 rpm, preferably 3800-4200 rpm, more preferably 4000 rpm. The second stirring is high-speed stirring.

[0112] In the above step 3), the second stirring and mixing time is 2-5 min, such as 2-3 min, 3-4 min, 4-5 min, 2-4 min, 3-5 min.

[0113] In the above step 3), the mixed phase is added to the first oil-in-water emulsion and stirred for a third time until the emulsification is uniformly mixed, and the obtained second oil-in-water emulsion is added with preservatives, skin care ingredients, and auxiliary ingredients, and cooled to provide the desired oil-in-water foundation.

[0114] In one specific embodiment, the mixed phase is obtained by uniformly mixing the third part of the emollient oil with the thickening stabilizer.

[0115] In a further specific embodiment, the mass ratio of the third part of the moisturizing oil to the first part of the moisturizing oil is 3:1-2.5, specifically 3:1-2, 3:2-2.5, 3:1.5-2.5, preferably 3:2.

[0116] In a further specific embodiment, the third part of the emollient oil is selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythritol tetracocoate, isostearyl neopentanoate, isopropyl myristate, polydimethylsiloxane, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl polytrimethicone.

[0117] In a further specific embodiment, the third part of the emollient oil is isononyl isononanoate.

[0118] In a further specific embodiment, the uniform mixing time is 2-4 min, such as 2-3 min, 3-4 min, preferably 3 min.

[0119] In a further specific embodiment, the stirring rate for uniform mixing is 1000-2000 rpm, such as 1000-1400 rpm, 1400-2000 rpm, 1200-1600 rpm, preferably 1200-1600 rpm, and more preferably 1400 rpm.

[0120] In one embodiment, the mixed phase is added to the oil-in-water emulsion at a slow and uniform speed.

[0121] In a specific embodiment, the stirring rate of the third stirring and mixing is 1500-2500 rpm, such as 1500-2000 rpm, 2000-2500 rpm, 1800-2200 rpm, preferably 1800-2200 rpm, and more preferably 2000 rpm.

[0122] In a specific embodiment, the third stirring and mixing time is 2-4 min, such as 2-3 min, 3-4 min, preferably 3 min.

[0123] In a specific embodiment, the mixing time is 1-3 min, such as 1-2 min, 2-3 min, and preferably 2 min.

[0124] In a specific embodiment, the stirring rate of the mixing is 1500-2500 rpm, such as 1500-2000 rpm, 2000-2500 rpm, 1800-2200 rpm, preferably 1800-2200 rpm, and more preferably 2000 rpm.

[0125] The third aspect of the present invention provides an oil-in-water foundation prepared by the above method.

[0126] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0127] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those generally understood by those skilled in the art. In addition to the specific methods, equipment, and materials used in the embodiments, according to the grasp of the prior art by those skilled in the art and the record of the present invention, any methods, equipment, and materials of the prior art similar or equivalent to the methods, equipment, and materials described in the embodiments of the present invention can also be used to realize the present invention.

[0128] Example 1

[0129] According to item A of Table 1, isononyl isononanoate is taken as the first part of the emollient oil, the first part of the emollient oil, cell phospholipid-modified titanium dioxide and cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red and cell phospholipid-treated iron oxide black as colorants are mixed uniformly at a stirring rate of 2000 rpm for 5 minutes, and the second part of the emollient oil (cyclopentasiloxane, C12-15 alcohol benzoate and polydimethylsiloxane), sorbitan oleate as an oil-in-water emulsifier and tocopherol acetate as an antioxidant are added to the obtained color paste and mixed uniformly and dispersed at a stirring rate of 2000 rpm for 12 minutes to obtain an oil phase.

[0130] According to item B of Table 1, polysorbate 80 as an oil-in-water emulsifier, glycerin and 1,3-butylene glycol as humectants, xanthan gum as a suspending thickener, water, an inorganic salt, and EDTA-2Na as a metal ion chelating agent were mixed uniformly at a stirring speed of 1400 rpm for 5 minutes until the mixture became clear and transparent to obtain an aqueous phase.

[0131] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 2000 rpm for 5 min, and then stirred and mixed at a second high speed at 4000 rpm for 3 min to obtain a first oil-in-water emulsion.

[0132] According to item C of Table 1, isononyl isononanoate as the third part of the emollient oil and hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer as a thickening stabilizer were mixed uniformly at a stirring speed of 1400 rpm for 3 minutes to obtain a mixed phase.

[0133] The mixed phase was slowly and uniformly added to the first oil-in-water emulsion, and then stirred and mixed for a third time at a stirring speed of 2000 rpm for 3 minutes until the emulsification was uniform, thereby obtaining a second oil-in-water emulsion. The components in item D of the following Table 1 were added to the second oil-in-water emulsion, including phenoxyethanol as a preservative, a cell phospholipid aqueous solution as a skin care ingredient, and a fragrance as an auxiliary ingredient, and mixed at a stirring speed of 2000 rpm for 2 minutes, and cooled to obtain an oil-in-water foundation sample 1#.

[0134] Table 1

[0135]

[0136]

[0137] Example 2

[0138] According to item A of Table 2, isononyl isononanoate is taken as the first part of the emollient oil, the first part of the emollient oil, cell phospholipid-modified titanium dioxide and cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red and cell phospholipid-treated iron oxide black as colorants are mixed uniformly at a stirring rate of 1900 rpm for 5.5 min, and the second part of the emollient oil (cyclopentasiloxane, C12-15 alcohol benzoate and octyldodecanol), sorbitan oleate as an oil-in-water emulsifier and tocopherol acetate as an antioxidant are added to the obtained color paste and mixed uniformly and dispersed at a stirring rate of 1900 rpm for 13 min to obtain an oil phase.

[0139] According to item B of Table 2, polysorbate 80 as an oil-in-water emulsifier, glycerin and polyethylene glycol-12 as humectants, xanthan gum as a suspending thickener, water, an inorganic salt, and EDTA-2Na as a metal ion chelating agent were mixed uniformly at a stirring speed of 1300 rpm for 5.5 min until a clear and transparent state was obtained to obtain an aqueous phase.

[0140] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 1900 rpm for 5.5 min, and then stirred and mixed at a second high speed at 3800 rpm for 4 min to obtain a first oil-in-water emulsion.

[0141] According to item C of Table 2, isononyl isononanoate as the third part of the emollient oil and polyacrylate cross-polymer-6 as a thickening stabilizer were mixed uniformly at a stirring speed of 1300 rpm for 3.5 minutes to obtain a mixed phase.

[0142] The mixed phase was slowly and uniformly added to the first oil-in-water emulsion, and then stirred and mixed for a third time at a stirring speed of 2100 rpm for 2 minutes until the emulsification was uniform, thereby obtaining a second oil-in-water emulsion. The components in item D of the following Table 2 were added to the second oil-in-water emulsion, including EDTA-2Na as a metal ion chelating agent, phenoxyethanol as a preservative, a cell phospholipid aqueous solution as a skin care ingredient, and a fragrance as an auxiliary ingredient, and the mixture was stirred at a speed of 1900 rpm for 2.5 minutes, and then cooled to obtain an oil-in-water foundation sample 2#.

[0143] Table 2

[0144]

[0145] Example 3

[0146] According to item A of Table 3, isononyl isononanoate is taken as the first part of the emollient oil, the first part of the emollient oil, cell phospholipid-modified titanium dioxide, and cell phospholipid-treated iron oxide yellow and cell phospholipid-treated iron oxide red as colorants are mixed uniformly at a stirring rate of 2100 rpm for 4.5 min, and the second part of the emollient oil (cyclopentasiloxane, polydimethylsiloxane, phenyl trimethicone), sorbitan oleate as an oil-in-water emulsifier, and tocopherol acetate as an antioxidant are added to the obtained color paste and mixed uniformly and dispersed at a stirring rate of 2100 rpm for 11 min to obtain an oil phase.

[0147] According to item B of Table 3, polysorbate-80 as an oil-in-water emulsifier, glyceryl polyether-26 and sodium pyrrolidone carboxylate as humectants, magnesium aluminum silicate as a suspending thickener, water, an inorganic salt, and EDTA-2Na as a metal ion chelating agent were mixed uniformly at a stirring speed of 1500 rpm for 4.5 min to obtain an aqueous phase.

[0148] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 2100 rpm for 4.5 min, and then stirred and mixed at a second high speed at 4200 rpm for 3 min to obtain a first oil-in-water emulsion.

[0149] According to item C of Table 3, isononyl isononanoate as the third part of the emollient oil and bentonite as a thickening stabilizer were mixed uniformly at a stirring speed of 1500 rpm for 2.5 minutes to obtain a mixed phase.

[0150] The mixed phase was slowly and uniformly added to the first oil-in-water emulsion, and then stirred and mixed for a third time at a stirring speed of 1900 rpm for 4 minutes until the emulsification was uniform, thereby obtaining a second oil-in-water emulsion. The components in item D of the following Table 3 were added to the second oil-in-water emulsion, including EDTA-2Na as a metal ion chelating agent, phenoxyethanol as a preservative, a cell phospholipid aqueous solution as a skin care ingredient, and a fragrance as an auxiliary ingredient, and the mixture was stirred at a speed of 2100 rpm for 1.5 minutes, and then cooled to obtain an oil-in-water foundation sample 3#.

[0151] Table 3

[0152]

[0153]

[0154] Comparative Example 1

[0155] According to item A of Table 4, isononyl isononanoate is taken as the first part of the emollient oil, the first part of the emollient oil, titanium dioxide treated with triethoxycaprylylsilane, and iron oxide yellow treated with triethoxycaprylylsilane, iron oxide red treated with triethoxycaprylysilane, and iron oxide black treated with triethoxycaprylysilane as colorants are mixed uniformly at a stirring rate of 2000 rpm for 5 minutes, and the second part of the emollient oil (cyclopentasiloxane, C12-15 alcohol benzoate, polydimethylsiloxane), sorbitan oleate as an oil-in-water emulsifier, and tocopherol acetate as an antioxidant are added to the obtained color paste and mixed uniformly and dispersed at a stirring rate of 2000 rpm for 12 minutes to obtain an oil phase. Among them, triethoxyoctylsilane-treated titanium dioxide, triethoxyoctylsilane-treated iron oxide yellow, triethoxyoctylsilane-treated iron oxide red, and triethoxyoctylsilane-treated iron oxide black are samples obtained by surface modification of titanium dioxide, iron oxide yellow, iron oxide red, and iron oxide black using triethoxyoctylsilane. The surface modification method can refer to the preparation method of titanium dioxide modified with phosphorylcholine polymer recorded in "A method for organic surface treatment of titanium dioxide with phosphorylcholine polymer" of 202211321350.9.

[0156] According to item B of Table 4, polysorbate 80 as an oil-in-water emulsifier, glycerin and 1,3-butylene glycol as humectants, xanthan gum as a suspending thickener, water, an inorganic salt, and EDTA-2Na as a metal ion chelating agent were mixed uniformly at a stirring speed of 1400 rpm for 5 minutes until the mixture became clear and transparent to obtain an aqueous phase.

[0157] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 2000 rpm for 5 min, and then stirred and mixed at a second high speed at 4000 rpm for 3 min to obtain a first oil-in-water emulsion.

[0158] According to item C of Table 4, isononyl isononanoate as the third part of the emollient oil and hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer as a thickening stabilizer were mixed uniformly at a stirring speed of 1400 rpm for 3 minutes to obtain a mixed phase.

[0159] The mixed phase was slowly and uniformly added to the first oil-in-water emulsion, and then stirred and mixed for a third time at a stirring speed of 2000 rpm for 3 minutes until the emulsification was uniform, thereby obtaining a second oil-in-water emulsion. The components in item D of the following Table 4 were added to the second oil-in-water emulsion, including phenoxyethanol as a preservative, a cell phospholipid aqueous solution as a skin care ingredient, and a fragrance as an auxiliary ingredient, and mixed at a stirring speed of 2000 rpm for 2 minutes, and cooled to obtain an oil-in-water foundation sample 1*.

[0160] Table 4

[0161]

[0162] Comparative Example 2

[0163] According to item A of Table 5, isononyl isononanoate is taken as the first part of the emollient oil, the first part of the emollient oil, amino acid-treated titanium dioxide and amino acid-treated iron oxide yellow, amino acid-treated iron oxide red and amino acid-treated iron oxide black as colorants are mixed uniformly at a stirring rate of 2000 rpm for 5 minutes, and the second part of the emollient oil (cyclopentasiloxane, C12-15 alcohol benzoate and polydimethylsiloxane), sorbitan oleate as an oil-in-water emulsifier and tocopherol acetate as an antioxidant are added to the obtained color paste, and the mixture is mixed uniformly and dispersed at a stirring rate of 2000 rpm for 12 minutes to obtain an oil phase. Among them, amino acid-treated titanium dioxide, amino acid-treated iron oxide yellow, amino acid-treated iron oxide red, and amino acid-treated iron oxide black are samples obtained by surface modification of titanium dioxide, iron oxide yellow, iron oxide red, and iron oxide black with amino acids. The surface modification method can refer to the preparation method of phosphorylcholine polymer-modified titanium dioxide recorded in "An organic surface treatment method for titanium dioxide with phosphorylcholine polymer" of 202211321350.9.

[0164] According to item B of Table 5, polysorbate 80 as an oil-in-water emulsifier, glycerin and 1,3-butylene glycol as humectants, xanthan gum as a suspending thickener, water, an inorganic salt, and EDTA-2Na as a metal ion chelating agent were mixed uniformly at a stirring speed of 1400 rpm for 5 minutes until the mixture became clear and transparent to obtain an aqueous phase.

[0165] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 2000 rpm for 5 min, and then stirred and mixed at a second high speed at 4000 rpm for 3 min to obtain a first oil-in-water emulsion.

[0166] According to item C of Table 5, isononyl isononanoate as the third part of the emollient oil and hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer as a thickening stabilizer were mixed uniformly at a stirring speed of 1400 rpm for 3 minutes to obtain a mixed phase.

[0167] The mixed phase was slowly and uniformly added to the first oil-in-water emulsion, and then stirred and mixed for a third time at a stirring speed of 2000 rpm for 3 minutes until the emulsification was uniform, thereby obtaining a second oil-in-water emulsion. The components in item D of the following Table 5 were added to the second oil-in-water emulsion, including phenoxyethanol as a preservative, a cell phospholipid aqueous solution as a skin care ingredient, and a fragrance as an auxiliary ingredient, and the mixture was stirred at a speed of 2000 rpm for 2 minutes, and then cooled to obtain an oil-in-water foundation sample 2*.

[0168] Table 5

[0169]

[0170]

[0171] Comparative Example 3

[0172] Take isononyl isononanoate, titanium dioxide treated with triethoxyoctylsilane, yellow iron oxide treated with triethoxyoctylsilane, red iron oxide treated with triethoxyoctylsilane, and black iron oxide treated with triethoxyoctylsilane from item A of Table 6 and mix them evenly, and prepare them into color paste by three-roll mill. Stir the other ingredients in item A of Table 6 in a stirrer at a stirring speed of 3000 rpm for 15 minutes to disperse them evenly, add the ground color paste, stir in a stirrer at a stirring speed of 3000 rpm for 10 minutes to disperse them evenly. Keep all the dispersed mixed ingredients in item A of Table 6 in a homogenizer at a temperature of 75°C and a stirring speed of 3000 rpm for 10 minutes to obtain an oil phase. Among them, triethoxyoctylsilane-treated titanium dioxide, triethoxyoctylsilane-treated iron oxide yellow, triethoxyoctylsilane-treated iron oxide red, and triethoxyoctylsilane-treated iron oxide black are samples obtained by surface modification of titanium dioxide, iron oxide yellow, iron oxide red, and iron oxide black using triethoxyoctylsilane. The surface modification method can refer to the preparation method of titanium dioxide modified with phosphorylcholine polymer recorded in "A method for organic surface treatment of titanium dioxide with phosphorylcholine polymer" of 202211321350.9.

[0173] Take the ingredients in item B of Table 6 and mix them evenly until they become clear and transparent, maintain the temperature at 75°C, and obtain an aqueous phase.

[0174] Take the water phase and slowly and uniformly add it to the oil phase. After the addition is complete, disperse it at a stirring speed of 3500 rpm for 10 minutes for emulsification. Cool it to 30°C, take the ingredients in item C of Table 6 and add them to mix, and you can get the water-in-oil foundation sample 3*.

[0175] Table 6

[0176]

[0177]

[0178] By comparing the traditional oil-in-water preparation process of Example 1 with that of Comparative Example 3, it can be seen that the preparation process of Comparative Example 3 is obviously complicated and has more process steps. Compared with Comparative Example 3, the preparation process of Example 1 has optimized process steps and reduced process difficulty.

[0179] Comparative Example 4

[0180] Take isononyl isononanoate, cell phospholipid treated iron oxide yellow, cell phospholipid treated iron oxide red, and cell phospholipid treated iron oxide black from item A of Table 7 below, mix them evenly, and prepare them into color paste by three-roll mill. Stir the other ingredients in item A of Table 7 below in a stirrer at a stirring speed of 3000 rpm for 15 minutes to disperse them evenly, add the ground color paste, stir in a stirrer at a stirring speed of 3000 rpm for 10 minutes to disperse them evenly. Keep all the dispersed mixed ingredients in item A of Table 7 below in a homogenizer at a temperature of 75°C and a stirring speed of 3000 rpm for 10 minutes to obtain an oil phase.

[0181] Take the ingredients in item B of Table 7 and mix them evenly until they become clear and transparent, maintain the temperature at 75°C, and obtain an aqueous phase.

[0182] Take the oil phase and slowly and uniformly add it to the water phase. After the oil phase is completely added, disperse it at a stirring speed of 3500 rpm for 10 minutes for emulsification and cool it to 30°C. Take the ingredients in items C and D of Table 7 and add them to mix to obtain water-in-oil foundation sample 4*.

[0183] Table 7

[0184]

[0185]

[0186] The ratio of the ingredients in the formula of Comparative Example 4 is consistent with that of Example 1, and the preparation process is a traditional oil-in-water preparation process. The dispersion time and the mean time are not shortened, and this process is in accordance with the traditional oil-in-water-oil phase-oil phase pouring water phase operation. The oil-in-water product prepared with this feature is not as light and thin as that of Example 1, and the skin feels moist and more oily.

[0187] Comparative Example 5

[0188] Take isononyl isononanoate, cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red, and cell phospholipid-treated iron oxide black in item A of Table 8 and mix them evenly. Add other ingredients in phase A to the obtained color paste and mix and disperse them evenly at a stirring speed of 2000 rpm to obtain an oil phase.

[0189] Take the ingredients in item B of Table 8 and mix them evenly until they become clear and transparent to obtain an aqueous phase.

[0190] The phase A oil phase was slowly and uniformly added to the phase B water phase, and the mixture was stirred and mixed at a first slow speed of 2000 rpm for 5 min, and then stirred and mixed at a second high speed of 4000 rpm for 3 min to obtain a first oil-in-water emulsion.

[0191] The components in item C of Table 8 were mixed and dispersed uniformly, and the obtained mixed phase was uniformly added to the first oil-in-water emulsion, and then stirred and mixed at a high speed of 1400 rpm for a third time until the emulsification was uniform, to obtain a second oil-in-water emulsion.

[0192] The ingredients in item D of the following Table 8 were added to the second oil-in-water emulsion, mixed, and cooled to obtain oil-in-water liquid foundation sample 5*.

[0193] Table 8

[0194]

[0195] Compared with Example 1, Comparative Example 5 has different preparation processes. Specifically, the order of adding the oil phase and the water phase is different. In Example 1, the water phase is poured into the oil phase, while in Comparative Example 5, the oil phase is poured into the water phase. Compared with Example 1, the stability of the preparation process of Comparative Example 5 is poor.

[0196] Comparative Example 6

[0197] Take isononyl isononanoate, cell phospholipid-modified titanium dioxide, cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red, and cell phospholipid-treated iron oxide black in item A of Table 9 and mix them evenly. Add other ingredients in item A to the obtained color paste and mix and disperse them evenly at a stirring speed of 2000 rpm to obtain an oil phase.

[0198] Take the ingredients in item B of Table 9 and mix them evenly until they become clear and transparent to obtain an aqueous phase.

[0199] The water phase was slowly and uniformly added to the oil phase, and the mixture was stirred and mixed at a first slow speed at 2000 rpm for 5 minutes, and then stirred and mixed at a second high speed at 4000 rpm for 3 minutes to obtain a first oil-in-water emulsion. The first oil-in-water emulsion was homogenized in a homogenizer at a stirring speed of 3000 rpm for 10 minutes.

[0200] The components in item C of Table 9 were mixed and dispersed uniformly, and the obtained mixed phase was uniformly added to the first oil-in-water emulsion, and then stirred and mixed at a high speed of 2000 rpm for a third time until the emulsification was uniform, to obtain a second oil-in-water emulsion.

[0201] The ingredients in item D of the following Table 9 were added to the second oil-in-water emulsion, mixed, and cooled to obtain oil-in-water liquid foundation sample 6*.

[0202] Table 9

[0203]

[0204]

[0205] Compared with Example 1, in the preparation processes of Comparative Example 6, a step of homogenizing by a homogenizer is added after high-speed stirring. Compared with Example 1, the preparation process of Comparative Example 6 has poor stability and poor skin feel.

[0206] Example 4

[0207] The oil-in-water foundation sample 1# prepared in Example 1 and the oil-in-water foundation samples 1*, 2*, 4*, 5*, and 6* prepared in Comparative Examples 1, 2, 4, 5, and 6 were subjected to a temperature test of -15°C, 5°C, 25°C, and 45°C in a cycle to observe whether the foundation produced oil or demulsified within one month. The specific test results are shown in Table 10. Figure 1a , Figure 1b From Table 10, Figure 1a , Figure 1b It can be seen that the formula stability of the oil-in-water foundation sample 1# prepared in Example 1 is the best.

[0208] Table 10

[0209] Lotion No. -15℃ 5℃ 25℃ 45℃ cycle Example 1 Stablize Stablize Stablize Stablize Stablize Comparative Example 1 Demulsification Demulsification Demulsification Demulsification Demulsification Comparative Example 2 Demulsification Demulsification Stablize Demulsification Demulsification Comparative Example 4 Demulsification Demulsification Demulsification Demulsification Demulsification Comparative Example 5 Demulsification Demulsification Demulsification Demulsification Demulsification Comparative Example 6 Demulsification Demulsification Demulsification Demulsification Demulsification

[0210] Example 5

[0211] The oil-in-water foundation sample 1# prepared in Example 1 and the oil-in-water foundation samples 1*, 2*, and 3* prepared in Comparative Examples 1, 2, and 3 were distributed to 10 test volunteers for skin feel evaluation, and the moisture content of the skin surface was measured using a skin moisture content tester. Test environment conditions: the test environment temperature was 22°C ± 1°C, the humidity was 50% ± 5%, and real-time dynamic monitoring was performed.

[0212] The experimental data are classified as follows:

[0213] 1. Smearing feeling

[0214] The specific test results of the smear feeling are shown in Figure 2 .Depend on Figure 2 It can be seen that about 80% of people said that the sample of Example 1 was moisturized; the moisturizing feeling was significantly better than that of the other comparative samples.

[0215] 2. Hydration

[0216] The specific test results of moisturizing feeling can be found in Figure 3 , Table 11. Figure 3 As shown in Table 12, the moisture content of the skin of the sample in Example 1 was significantly increased after applying the product, and the data were higher than those of the other comparative samples.

[0217] Table 11

[0218]

[0219] 3. Moisturizing feeling

[0220] See the specific test results of moisturizing feeling for Figure 4 , Table 12. Figure 4 As shown in Table 12, the skin moisture content of the sample in Example 1 changed less after 2 hours than that of the comparative sample.

[0221] Table 12

[0222]

[0223] 4. Sticky feeling

[0224] The specific test results of stickiness can be found in Figure 5 .Depend on Figure 5 It can be seen that about 90% of the volunteers believe that the sample of Example 1 has the best skin feel.

[0225] 5. Absorption

[0226] The specific test results of absorption are shown in Figure 6 .Depend on Figure 6 It can be seen that the absorption feedback of the sample in Example 1 is the best.

[0227] Example 6

[0228] The oil-in-water foundation sample 1# prepared in Example 1 and the foundation samples 1*, 2*, 3* prepared in Comparative Examples 1, 2, 3 were distributed to 10 test volunteers for makeup effect evaluation. The scoring standard was 1-10 points, with 1 point being the worst and 10 points being the best.

[0229] 1. Gloss

[0230] The specific test results of gloss are shown in Figure 7a , 7b , 7c, 7d. Figure 7a , 7b , 7c, and 7d show that the sample of Example 1 has the best glossiness on the human face.

[0231] 2. Defect coverage

[0232] The specific test results of defect coverage are shown in Figure 7a , 7b , 7c, 7d. Figure 7a , 7b , 7c, and 7d show that the sample of Example 1 has the best effect in covering blemishes on the face.

[0233] 3. How well the makeup adheres to your skin

[0234] The specific test results of the degree of makeup adherence can be found in Figure 7a , 7b , 7c, 7d. Figure 7a ,7b As can be seen from 7c and 7d, the sample of Example 1 has the best makeup fit on the human face, and there is no obvious powder sticking or patchy phenomenon on both sides of the nose.

[0235] 4.8 hours makeup lasting test

[0236] 4.1 Volunteer evaluation: The oil-in-water foundation sample 1# prepared in Example 1 and the oil-in-water foundation samples 1*, 2*, and 3* prepared in Comparative Examples 1, 2, and 3 were distributed to 10 volunteers, who were evenly applied with makeup on their faces and were allowed to move about normally. The volunteers were observed and scored for the complete makeup effects on their faces after 8 hours. The scoring results are shown in Figure 8 .Depend on Figure 8 It can be seen that the sample in Example 1 has the best makeup lasting effect.

[0237] 4.2 Laboratory evaluation: Clean the arm, take three evenly sized areas on the arm, apply 0.2g of water-based oil foundation sample 1# and water-based oil foundation samples 1* and 2* respectively, apply evenly, wait for 30 minutes at a constant humidity and temperature of 25℃, rinse the arm evenly with 100ml of deionized water respectively, and then wipe the arm with fingers to observe the migration of the product. The experimental results are shown in Figure 9a , 9b , 9c. Figure 9a , 9b , 9c show that the sample of Example 1 is insoluble in water after being rinsed with water, while the other two comparative examples are soluble in water to varying degrees. By wiping with fingers, it can be seen that the migration resistance and makeup holding performance of the sample of Example 1 is better than that of the other two comparative examples; therefore, the sample of Example 1 also shows an excellent makeup holding effect in terms of eight-hour makeup holding.

[0238] In summary, experimental data proves that titanium dioxide surface treated with water-oil amphiphilic cell phospholipids exhibits excellent stability, good skin feel and long-lasting makeup effect in water-in-oil products.

[0239] The above examples are for the purpose of illustrating the embodiments disclosed by the present invention and are not to be construed as limiting the present invention. In addition, the various modifications listed herein and the variations of the methods in the invention are obvious to those skilled in the art without departing from the scope and spirit of the present invention. Although the present invention has been specifically described in conjunction with various specific preferred embodiments of the present invention, it should be understood that the present invention should not be limited to these specific embodiments. In fact, various modifications as described above that are obvious to those skilled in the art to obtain the invention should be included within the scope of the present invention.

Claims

1. An oil-in-water foundation liquid, comprising an oil phase component and a water phase component, wherein the oil phase component comprises an oil-in-water emulsifier, cell phospholipid-modified titanium dioxide and a colorant, and the water phase component comprises an oil-in-water emulsifier.

2. The oil-in-water foundation according to claim 1, characterized in that: Includes any one or more of the following conditions: A1) the weight percentage of the water-in-oil emulsifier to the total weight of the oil-in-water foundation liquid is 1-5wt%; A2) the water-in-oil emulsifier is sorbitan oleate; A3) the phosphorylcholine polymer in the cell phospholipid-modified titanium dioxide is selected from at least one of polyquaternium-51, polyquaternium-61, polyquaternium-64, and polyquaternium-65; A4) the weight percentage of the cell phospholipid modified titanium dioxide in the total amount of the oil-in-water foundation liquid is 4-10wt%; A5) the colorant is cell phospholipid treated iron oxide; A6) the weight percentage of the colorant in the total amount of the oil-in-water foundation liquid is 0.5-2wt%; A7) the oil phase component further comprises at least one of an emollient or a thickening stabilizer; A8) the oil-in-water emulsifier is polysorbate 80; A9) the weight percentage of the oil-in-water emulsifier to the total weight of the oil-in-water foundation liquid is 1-5wt%; A10) The aqueous phase component further comprises at least one of a humectant, a suspending thickener and water.

3. The oil-in-water liquid foundation according to claim 2, characterized in that: Also includes any one or more of the following conditions: A51) In item A5), the cell phospholipid-treated iron oxide is selected from at least one of cell phospholipid-treated iron oxide yellow, cell phospholipid-treated iron oxide red, and cell phospholipid-treated iron oxide black; A71) In item A7), the oil phase ingredients further include emollients and thickening stabilizers; A72) In item A7), the weight percentage of the emollient oil to the total weight of the oil-in-water foundation is 8-25 wt %; A73) In item A7), the emollient oil is selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythrityl tetracocoate, isostearyl neopentanoate, isopropyl myristate, dimethicone, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl polytrimethicone; A74) In item A7), the weight percentage of the thickening stabilizer to the total weight of the oil-in-water foundation liquid is 0.1-0.5 wt %; A75) In item A7), the thickening stabilizer is selected from at least one of bentonite, hydroxyethyl cellulose, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, polyacrylate crosspolymer-6, or magnesium aluminum silicate; A101) In item A10), the aqueous phase ingredients further include a humectant, a suspending thickener and water; A102) In item A10), the weight percentage of the moisturizing agent to the total weight of the oil-in-water foundation liquid is 8-15 wt %; A103) In item A10), the moisturizing agent is selected from at least one of 1,3-butylene glycol, glycerol, polyethylene glycol-12, glyceryl polyether-26, dipropylene glycol, tremella polysaccharide, sodium hyaluronate, methyl propanediol, sodium pyrrolidone carboxylate, xylitol or trehalose; A104) In item A10), the weight percentage of the suspending thickener to the total amount of the oil-in-water foundation is 0.1-0.5wt%; A105) In item A10), the suspending thickener is selected from at least one of xanthan gum, bentonite, magnesium aluminum silicate, guar gum, carbomer or sodium carboxymethyl cellulose; A106) In item A10), the balance of the oil-in-water foundation other than other ingredients is water.

4. The oil-in-water liquid foundation according to claim 1, characterized in that: The oil-in-water foundation liquid also includes antioxidants, inorganic salts, metal ion chelating agents, preservatives, skin care ingredients, and auxiliary ingredients.

5. The oil-in-water liquid foundation according to claim 4, characterized in that: Includes any one or more of the following conditions: B1) the weight percentage of the antioxidant in the total amount of the oil-in-water foundation is 0.1-0.5wt%; B2) the antioxidant is tocopherol acetate; B3) the weight percentage of the inorganic salt in the total amount of the oil-in-water foundation liquid is 0.1-1.0wt%; B4) the inorganic salt is sodium chloride; B5) the weight percentage of the metal ion chelating agent in the total amount of the oil-in-water foundation liquid is 0-0.5wt%; B6) the metal ion chelating agent is disodium ethylenediaminetetraacetate; B7) the weight percentage of the preservative in the total amount of the oil-in-water foundation liquid is 0.2-1wt%; B8) the preservative is phenoxyethanol; B9) the weight percentage of the skin care efficacy ingredient in the total amount of the oil-in-water foundation liquid is 0.05-5wt%; B10) the skin care ingredient is a cell phospholipid aqueous solution; preferably, the weight percentage concentration of cell phospholipids in the cell phospholipid aqueous solution is 3-4wt%; B11) the weight percentage of the auxiliary component to the total amount of the oil-in-water foundation liquid is 0-0.1wt%; B12) The auxiliary ingredient is flavor.

6. A method for preparing an oil-in-water foundation according to any one of claims 1 to 5, comprising the following steps: 1) mixing the colorant, the water-in-oil emulsifier and the cell phospholipid-modified titanium dioxide uniformly to obtain an oil phase; 2) mixing the oil-in-water emulsifier uniformly to obtain a water phase; 3) Adding the water phase to the oil phase for a first stirring and mixing, and then stirring and mixing for a second time to obtain a first oil-in-water emulsion to provide the desired oil-in-water foundation.

7. The method for preparing the oil-in-water liquid foundation according to claim 6, characterized in that: Includes any one or more of the following conditions: C1) In step 1), a moisturizing oil and an antioxidant are further added, wherein the moisturizing oil comprises a first moisturizing oil part and a second moisturizing oil part, the first moisturizing oil part, a colorant, and a cell phospholipid-modified titanium dioxide are uniformly mixed, and the second moisturizing oil part, a water-in-oil emulsifier, and an antioxidant are added to the obtained color paste and stirred and mixed uniformly to obtain an oil phase; C2) In step 2), a humectant, a suspension thickener, water, an inorganic salt, and a metal ion chelating agent are further added, and the oil-in-water emulsifier, the humectant, the suspension thickener, water, the inorganic salt, and the metal ion chelating agent are uniformly mixed to obtain an aqueous phase; C3) In step 3), the stirring rate of the first stirring and mixing is 1500-2500 rpm; C4) in step 3), the first stirring and mixing time is 4-6 minutes; C5) in step 3), the stirring rate of the second stirring and mixing is 3500-4500 rpm; C6) In step 3), the second stirring and mixing time is 2-5 minutes; C7) In step 3), the mixed phase is added to the first oil-in-water emulsion and stirred for a third time until the emulsification and mixing are uniform, and the obtained second oil-in-water emulsion is added with preservatives, skin care ingredients, and auxiliary ingredients, and the mixture is cooled to provide the desired oil-in-water foundation.

8. The method for preparing the oil-in-water liquid foundation according to claim 7, characterized in that: Also includes any one or more of the following conditions: C11) In item C1), the first part of the emollient oil and the second part of the emollient oil are both selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythritol tetracocoate, isostearyl neopentanoate, isopropyl myristate, dimethicone, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl polytrimethicone; C12) In item C1), the mass ratio of the first part of the emollient oil to the second part of the emollient oil is 2:19-21; C13) In item C1), the mixing time is 4-6 minutes; C14) In item C1), the stirring rate for uniform mixing is 1500-2500 rpm; C15) In item C1), the stirring and mixing time is 10-15 minutes; C16) In item C1), the stirring rate for uniform mixing is 1500-2500 rpm; C21) In item C2), the mixing time is 4-6 min; C22) In item C2), the stirring rate for uniform mixing is 1000-2000 rpm; C71) In item C7), the mixed phase is obtained by uniformly mixing the third part of the emollient oil with the thickening stabilizer; C72) In item C7), the stirring rate of the third stirring and mixing is 1500-2500 rpm; C73) In item C7), the third stirring and mixing time is 2-4 min; C74) In item C7), the mixing time is 1-3 min; C75) In item C7), the stirring rate of the mixing is 1500-2500 rpm.

9. The method for preparing the oil-in-water liquid foundation according to claim 8, characterized in that: Also includes any one or more of the following conditions: C111) In item C11), the first part of the emollient oil is isononyl isononanoate; C112) In item C11), the second part of the emollient oil is selected from at least one of cyclopentasiloxane, C12-15 alcohol benzoate, octyldodecanol, dimethicone or phenyl trimethicone; C711) In item C71), the mass ratio of the third part of the emollient oil to the first part of the emollient oil is 3:1-2.5; C712) In item C71), the third part of the emollient oil is selected from at least one of isononyl isononanoate, cyclopentasiloxane, C12-15 alcohol benzoate, olive oil, polyisobutene, ethylhexyl palmitate, octyldodecanol, caprylic / capric triglyceride, pentaerythritol tetracocoate, isostearyl neopentanoate, isopropyl myristate, dimethicone, coconut oil alcohol-caprylate / caprate, caprylyl polymethicone or phenyl trimethicone; C713) In item C71), the mixing time is 2-4 min; C714) In item C71), the stirring rate for uniform mixing is 1000-2000 rpm.

10. An oil-in-water liquid foundation prepared by the method according to any one of claims 6 to 9.

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