Oil-in-water lip makeup

Abstract

The purpose of the present invention is to provide an oil-in-water-type lip cosmetic having an excellent secondary adhesion preventing effect and excellent gloss and fit feeling on the lips, and having freshness. The oil-in-water-type lip cosmetic having not only the secondary adhesion preventing effect but also the excellent gloss feeling and fit feeling is obtained by combining a dimethyl silicone oil having a specific viscosity with a film-forming agent including a hydrocarbon-based polymer incompatible with said silicone oil.

Description

Related Applications

[0001] This application claims priority to Japanese Patent Application No. 2021-34999, filed on March 5, 2021, and is incorporated herein by reference. [Technical Field]

[0002] The present invention relates to a lip cosmetic, and more particularly to a lip cosmetic that has an excellent secondary adhesion-resistant effect, long-lasting luster, and a good fit. [Background technology]

[0003] Conventionally, lip cosmetics have had the problem of secondary adhesion, in which the lip color is transferred when the lip touches a cup or the like after application of the cosmetic. Therefore, lip cosmetics that are less likely to cause secondary adhesion, so-called secondary adhesion-resistant cosmetics, have been developed. For example, Patent Document 1 discloses a solid cosmetic preparation that is transfer-resistant and contains a silicone surfactant in combination with a volatile oil, and in which the pigment is well dispersed. Patent Document 2 describes a lipstick composition that has transfer resistance and contains an incompatible perfluoropolyether-type non-volatile oil and a volatile oil. However, this lipstick composition has the problem that it takes some time after application for the secondary adhesion-resistant effect to be realized. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 97 / 16157 [Patent Document 2] International Publication No. 96 / 40044 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in view of the above-mentioned prior art, and the problem to be solved by the present invention is to provide an oil-in-water lip cosmetic that has an excellent secondary adhesion-resistant effect, and also has a glossy feel, excellent fitting feeling on the lips, and a moist feeling. [Means for solving the problem]

[0006] As a result of intensive research by the present inventors to solve this problem, they discovered that by combining a dimethyl silicone oil of a specific viscosity with a film-forming agent containing a hydrocarbon polymer that is incompatible with said silicone oil, it is possible to obtain an oil-in-water lip cosmetic that not only has a secondary adhesion-resistant effect but also has excellent gloss and fit. This discovery led to the completion of the present invention.

[0007] That is, the oil-in-water lip cosmetic according to the present invention is characterized by containing the following components (A) to (E): (A) Dimethyl silicone oil with a viscosity of 100CS to 50,000CS (B) a film-forming agent containing a hydrocarbon polymer that is incompatible with (A) (C) Non-silicone surfactants with an HLB of 12 or higher (D) Water-based thickener (E)Water In addition, in the oil-in-water lip cosmetic according to the present invention, the hydrocarbon polymer of the film-forming agent is preferably present in an amount of 0.5 to 10% by mass in the cosmetic. In the present invention, the film-forming agent preferably contains a hydrocarbon solvent that dissolves the hydrocarbon polymer. In the present invention, the hydrocarbon solvent is preferably used in an amount of 50 to 99 parts by mass per 100 parts by mass of the film-forming agent. In the present invention, the blending amounts of the components (A) to (E) are as follows: (A) 10 to 40% by mass of dimethyl silicone oil having a viscosity of 100CS to 50,000CS (B) 5 to 30% by mass of a film-forming agent containing a hydrocarbon polymer incompatible with (A) (C) Non-silicone surfactant with an HLB of 12 or higher, 1 to 4% by mass (D) Water-based thickener 0.01 to 5% by mass (E) Water 25-70% by mass, It is preferable that: In the present invention, it is preferable that the hydrocarbon-based polymer is at least one selected from an ethylene monomer unit and / or a styrene monomer unit. In the present invention, it is also preferable that the aqueous thickener (D) is an aqueous thickener made of an acrylic acid-based polymer. In the present invention, it is also preferable that the ink contains no pigment. In the present invention, it is also preferable that the aqueous dye (F) is contained in an amount of 0.01 to 1.5% by mass. In the present invention, it is also preferable that the composition further contains a moisturizing agent (G). In the present invention, it is also preferable that the moisturizing agent (G) is an alkylene oxide derivative represented by the following general formula (1) and has a molecular weight of 1000 to 5000, and is blended in an amount of 0.1 to 5 mass %. [ka] (In the formula, AO represents an oxyalkylene group having 3 to 4 carbon atoms, EO represents an oxyethylene group, p represents an oxyalkylene group having 3 to 4 carbon atoms, and q represents an average number of moles of oxyethylene groups added, respectively, and 1≦p≦70 and 1≦q≦70. The ratio of oxyethylene groups to the total of oxyalkylene groups and oxyethylene groups is 20 to 80 mass%, The oxyalkylene groups and oxyethylene groups may be attached in a block or random manner, and R 1 and R 2 are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, and R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less. [Effects of the Invention]

[0008] The oil-in-water lip cosmetic of the present invention is a lip cosmetic that exhibits a secondary adhesion-free effect immediately after application and has excellent gloss and fit, by blending specific amounts of (A) dimethyl silicone oil with a viscosity of 100 CS to 50,000 CS, (B) a film-forming agent containing a hydrocarbon polymer that is incompatible with component (A), (C) a non-silicone surfactant with an HLB of 12 or higher, (D) a water-based thickener, and (E) water. DETAILED DESCRIPTION OF THE INVENTION

[0009] The lip cosmetic of the present invention is composed of (A) a dimethyl silicone oil having a viscosity of 100 CS to 50,000 CS, (B) a film-forming agent made of a hydrocarbon polymer that is incompatible with component (A), (C) a non-silicone surfactant with an HLB of 12 or higher, (D) an aqueous thickener, and (E) water. Each component will be described in detail below.

[0010] (A) Dimethyl silicone oil with a viscosity of 100CS to 50,000CS Component (A) is an oil that is incompatible with component (B). Because component (A) has low affinity for lips, it becomes the outermost phase when applied to the lips. Component (A) adheres to the cup, preventing the color from transferring to the cup, thereby providing the so-called "secondary adhesion-free effect." The viscosity of component (A) is preferably 100 CS to 50,000 CS. A viscosity of 500 CS to 30,000 CS is particularly preferred. Mixtures of dimethyl silicone oils with different viscosities can also be used as long as the viscosity is within this range. Viscosities below 100 CS may not provide the secondary adhesion-free effect, while viscosities above 50,000 CS may result in a thick, bulky impression. Specific examples of component (A) include dimethicone 100CS, dimethicone 5000CS, dimethicone 500CS, dimethicone 1000CS, and dimethicone 3000CS. Commercially available products include KF-96A-300cs, KF-96A-500cs, and KF-96A-5000cs (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0011] The blending amount of component (A) is preferably 10 to 40% by mass of the total cosmetic. If the blending amount is less than 10% by mass, separation may be insufficient upon application, resulting in insufficient shine. If the blending amount is more than 40% by mass, the fresh feeling of use may be lost.

[0012] (B) a film-forming agent containing a hydrocarbon polymer that is incompatible with component (A) Component (B) is a film-forming agent containing a hydrocarbon polymer that is incompatible with component (A). Component (B) has a higher affinity with lips than component (A), making it easier for the lipstick to adhere to the lips. Therefore, by forming a film between the lips and component (A), a feeling of fitting is felt, and a greater secondary adhesion-free effect can be expected compared to when no film is present.

[0013] The hydrocarbon-based polymer blended in the lip cosmetic of the present invention may be one or more copolymers selected from copolymers having at least one selected from an ethylene monomer unit and a styrene monomer unit. For example, it may include at least one selected from a (styrene / isoprene) copolymer, an (ethylene / propylene / styrene) copolymer, a (styrene / butadiene) copolymer, a (butylene / ethylene / styrene) copolymer, a (styrene / propylene / butylene) copolymer, a (styrene / butylene) copolymer, and an (ethylene / propylene) copolymer. Among these, an (ethylene / propylene) copolymer, an (ethylene / propylene / styrene) copolymer, and a (butylene / ethylene / styrene) copolymer are particularly preferred. In the present invention, the film-forming agent preferably contains a hydrocarbon solvent as a solvent for dissolving the hydrocarbon polymer. If a hydrocarbon solvent is not used, the hydrocarbon polymer alone may have poor spreadability on the skin. Suitable hydrocarbon solvents include isododecane and hydrogenated polyisobutene. The hydrocarbon solvent may be either a volatile solvent or a non-volatile solvent. When a volatile solvent is used, the hydrocarbon solvent volatilizes over time after application, and the hydrocarbon polymer forms a firm coating. When a non-volatile solvent is used, the hydrocarbon polymer and the hydrocarbon solvent form a moist gel-like coating on the application surface. The concentration of the hydrocarbon solvent in the film-forming agent is preferably 50 to 99 parts by mass of the hydrocarbon solvent per 100 parts by mass of the film-forming agent. Commercially available products that can be used as film-forming agents include VERSAGEL (registered trademark) MD1600 and ME2000 (Penreco), Creagel (registered trademark) Crystal ID, and Crystal AF.

[0014] The amount of hydrocarbon polymer blended in the cosmetic is preferably 0.5 to 10 mass%, and particularly preferably 1 to 7 mass parts. If it is less than 0.5 mass%, the effect of forming a film on the application surface may not be sufficient, and if it exceeds 10 mass%, it may cause stickiness or other effects on the feel when used. The amount of the film-forming agent in the cosmetic is preferably 5 to 30% by mass. If the amount is less than 5% by mass, a film may not be formed, and if it exceeds 30% by mass, the fresh feeling of use may be lost.

[0015] (C) Non-silicone surfactants with an HLB of 12 or higher The component (C) contains a non-silicone surfactant with an HLB of 12 or higher. Because the surfactant has an HLB of 12 or higher, it dissolves in water, resulting in an oil-in-water composition. The reason for using a non-silicone surfactant is that the secondary adhesion-resistant effect cannot be achieved when the aqueous dye (F) is mixed with the silicone oil (A). Examples of non-silicone surfactants with an HLB of 12 or more include ceteth-20, PEG-60 hydrogenated castor oil, beheneth-20, and PEG-20 glyceryl isostearate. Commercially available products include NIKKOL BC-20, NIKKOL HCO-60, and NIKKOL BB-20 (all manufactured by Nikko Chemicals Co., Ltd.), and EMALEX GWIS-120 (manufactured by Nippon Emulsion Co., Ltd.). The component (C) blended in the lip cosmetic of the present invention may be one type or two or more types.

[0016] The blending amount of component (C) is preferably 1 to 4% by mass of the total cosmetic preparation. If the blending amount is less than 1% by mass, the effect may not be exerted, and if it is 4% by mass or more, the secondary adhesion resistance effect may be reduced.

[0017] (D) Water-based thickener In the present application, an aqueous thickener can be included as component (D). The inclusion of component (D) is preferred because it stabilizes emulsion. Examples of component (D) include (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (acrylates / C10-30 alkyl acrylate) crosspolymer, and (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer. Among these, aqueous thickeners made of acrylic acid-based polymers are particularly preferred. Commercially available products include SIMULGEL TM NS (manufactured by SEPPIC SA) is an example.

[0018] When component (D) is included, it is preferably in an amount of 0.01 to 5% by mass relative to the total amount of the lip cosmetic. If the amount is less than 0.01% by mass, it may not contribute to emulsion stability, and if the amount is more than 5% by mass, the fresh feeling when used may be lost.

[0019] (E)Water The oil-in-water lip cosmetic according to the present invention contains water. The water is not particularly limited and may be ion-exchanged water, tap water, or the like. The amount of (E) water to be blended is preferably 25 to 70% by mass of the total amount of the oil-in-water lip cosmetic. If the amount is less than 25% by mass, the smoothness during use may be impaired, and if it exceeds 70% by mass, the amounts of other ingredients are relatively reduced and the desired effect cannot be obtained.

[0020] (F) Water-based dye The oil-in-water lip cosmetic of the present invention can further contain (F) an aqueous dye. An aqueous dye is used in the oil-in-water lip cosmetic of the present invention because the pigment does not remain in the cosmetic applied to the lips, but rather penetrates into the lips to produce color, thereby achieving a secondary adhesion-free effect. Examples of the component (F) include Acid Fuchsin, Yellow No. 4, Yellow 5, Blue 1, Red 227, Green 3, Red 401, Red 504, Orange 205, Yellow 203, Green 201, Purple 201, Purple 401, Black 401, and Yellow 205. Commercially available products include UNICERT Yellow 08006-J (manufactured by Sensient Technologies Japan) and FD&C Green No. 3 (manufactured by Sensient Technologies Japan).

[0021] When component (F) is included, its amount is preferably 0.01 to 1.5% by mass relative to the total amount of the cosmetic. If it is less than 0.01% by mass, the aqueous dye will not be effective, and if it exceeds 1.5% by mass, the cosmetic may become difficult to remove.

[0022] (G) Moisturizer The oil-in-water lip cosmetic of the present invention may further contain a moisturizer (G). The oil-in-water lip cosmetic of the present invention may cause a dry feeling due to evaporation of water, but this can be suppressed by incorporating a moisturizer.

[0023] (G) Moisturizing agents include, for example, moisturizing agents that are typically incorporated into cosmetics, such as alkylene oxide derivatives, ethylene glycol, diethylene glycol, 1,3-butylene glycol, glycerin, hexamethylene glycol, isoprene glycol, polyethylene glycol, hyaluronic acid, chondroitin sulfate, chitin, chitosan, xylitol, sorbitol, maltitol, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa illustrator extract, Yarrow extract, and Melilot extract.

[0024] (G) The moisturizing agent preferably contains an alkylene oxide derivative having a molecular weight of 1,000 to 5,000. The alkylene oxide derivative is not particularly limited, but is preferably a compound represented by the following formula (1). [ka] (In the formula, AO represents an oxyalkylene group having 3 to 4 carbon atoms, EO represents an oxyethylene group, p represents an oxyalkylene group having 3 to 4 carbon atoms, and q represents an average number of moles of oxyethylene groups added, respectively, and 1≦p≦70 and 1≦q≦70. The ratio of oxyethylene groups to the total of oxyalkylene groups and oxyethylene groups is 20 to 80 mass %, and the oxyalkylene groups and oxyethylene groups may be added in a block or random manner. R 1 and R 2 are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, and R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

[0025] In the compound represented by the formula (1), AO is an oxyalkylene group having 3 to 4 carbon atoms, such as an oxypropylene group, an oxybutylene group, an oxyisobutylene group, a trimethylene group, or a tetramethylene group, and preferably an oxypropylene group or an oxybutylene group. p is the average number of moles of oxyalkylene groups added having 3 to 4 carbon atoms, and is 1≦p≦70, preferably 2≦p≦20. q is the average number of moles of oxyethylene groups added, and is 1≦q≦70, preferably 2≦q≦20. Furthermore, (p+q) is preferably 8 to 100.

[0026] In the compound represented by the formula (1), the proportion of oxyethylene groups relative to the total of oxyalkylene groups having 3 to 4 carbon atoms and oxyethylene groups is preferably 20 to 80% by mass. The order in which ethylene oxide and alkylene oxide having 3 to 4 carbon atoms are added is not particularly limited. The oxyethylene groups and oxyalkylene groups having 3 to 4 carbon atoms may be added in a block or random fashion, but are preferably added in a random fashion. Here, the block fashion includes not only two-stage blocks but also three-stage blocks.

[0027] R 1 and R 2 The R groups may be the same or may be a mixture of a hydrocarbon group having 1 to 4 carbon atoms and a hydrogen atom, or may be a mixture of different hydrocarbon groups having 1 to 4 carbon atoms. 1 and R 2 In the hydrocarbon group, the ratio of the number of hydrocarbon groups to the number of hydrogen atoms (Y) is 0.15 or less, preferably 0.06 or less, Y / X being the ratio of the number of hydrocarbon groups (X) to the number of hydrogen atoms (Y).

[0028] Specific examples of alkylene oxide derivatives include polyoxyethylene (10 mol) polyoxypropylene (10 mol) dimethyl ether, polyoxyethylene (9 mol) polyoxypropylene (2 mol) dimethyl ether, polyoxyethylene (14 mol) polyoxypropylene (7 mol) dimethyl ether, polyoxyethylene (6 mol) polyoxypropylene (14 mol) dimethyl ether, polyoxyethylene (15 mol) polyoxypropylene (5 mol) dimethyl ether, polyoxyethylene (25 mol) polyoxypropylene (25 mol) dimethyl ether, polyoxyethylene (9 mol) polyoxybutylene (2 mol) dimethyl ether, polyoxyethylene (14 mol) polyoxybutylene (7 ... Examples include ethylene (10 mol) polyoxypropylene (10 mol) diethyl ether, polyoxyethylene (10 mol) polyoxypropylene (10 mol) dipropyl ether, polyoxyethylene (10 mol) polyoxypropylene (10 mol) dibutyl ether, and polyoxyethylene (36 mol) polyoxypropylene (41 mol) dimethyl ether. Among these, polyoxyethylene (9 mol) polyoxypropylene (2 mol) dimethyl ether, polyoxyethylene (14 mol) polyoxypropylene (7 mol) dimethyl ether, and polyoxyethylene (36 mol) polyoxypropylene (41 mol) dimethyl ether are preferred, with polyoxyethylene (9 mol) polyoxypropylene (2 mol) dimethyl ether being particularly preferred.

[0029] The alkylene oxide derivative of the present invention can be produced by a known method, for example, by addition polymerization of ethylene oxide and an alkylene oxide having 3 to 4 carbon atoms to a compound having a hydroxyl group, followed by etherification with an alkyl halide in the presence of an alkali catalyst.

[0030] The amount of alkylene oxide derivative contained in the cosmetic of the present invention is not particularly limited, but is preferably 0.1 to 5 mass% relative to the total amount of the cosmetic, and more preferably 0.5 to 2 mass% relative to the total amount of the cosmetic.

[0031] In addition to the above-mentioned components, the oil-in-water lip cosmetic of the present invention may contain other oils, powders, polymeric compounds, fragrances, antioxidants, preservatives, cosmetic ingredients, and the like that are commonly used in ordinary oil-in-water lip cosmetics, as long as the effects of the present invention are not impaired.

[0032] The oil-in-water lip cosmetic of the present invention can be used as a lip gloss, a lip base for primer, an overcoat for lipstick, a lip balm, etc. Lip gloss is particularly preferred.

[0033] The present invention will be described in further detail below with reference to examples, but the present invention is not limited thereto. The blending amounts are expressed in mass % unless otherwise specified. The evaluations in the examples were carried out as follows. (1) Appearance (Appearance evaluation method) After the samples were prepared, the uniformity of appearance was evaluated on a scale of 1 to 5 based on the following criteria. The average score was used to judge the sample according to the following criteria. (Score) 3 points: uniform 2 points: Some unevenness 1 point: Uneven (Evaluation criteria) A: Average score of 2.0 or above B: Average score between 1.5 and 2.0 points C: Average score less than 1.5 points (2) Secondary adhesion resistance (Evaluation method for secondary adhesion resistance) A practical usability test was conducted by a panel of 10 experts. The effect of preventing secondary adhesion when the sample was applied to the lips was evaluated on a 5-point scale based on the following rating criteria. The average score was used to judge the results according to the following rating criteria. (Score) 3 points: High secondary adhesion prevention effect 2 points: No secondary adhesion effect 1 point: No secondary adhesion effect (Evaluation criteria) A: Average score of 2.0 or above B: Average score between 1.5 and 2.0 points C: Average score less than 1.5 points (3) Glossiness (Method for evaluating gloss) A practical usability test was conducted by a panel of 10 experts. The glossy feeling when the sample was applied to the lips was evaluated on a three-point scale based on the following criteria. The average score was used to judge the results according to the following criteria. (Score) 3 points: Moderate shine 2 points: Not enough shine 1 point: No gloss (Evaluation criteria) A: Average score of 2.0 or above B: Average score between 1.5 and 2.0 points C: Average score less than 1.5 points (4) Fit (How to evaluate fit) A practical usability test was conducted by a panel of 10 experts. The fit of the sample when applied to the lips was evaluated on a three-point scale based on the following criteria. The average score was used to judge the product according to the following criteria. (Score) 3 points: Feels like a good fit 2 points: The fit is not good enough 1 point: Doesn't feel like a good fit (Evaluation criteria) A: Average score of 2.0 or above B: Average score between 1.5 and 2.0 points C: Average score less than 1.5 points (5) Moisture sensation over time (Method for evaluating moisturizing sensation over time) A practical usability test was conducted by a panel of 10 experts. After applying the sample to the lips, the moisturizing feeling of the lips after 4 hours was evaluated on a three-point scale based on the following criteria. The average score was used to judge the results according to the following criteria. (Score) 3 points: Feels moisturized 2 points: Not enough moisture 1 point: No feeling of moisture (Evaluation criteria) A: Average score of 2.0 or above B: Average score between 1.5 and 2.0 points C: Average score less than 1.5 points

[0034] First, the inventors investigated the presence or absence of (A) dimethyl silicone oil and its viscosity. The results are shown in Table 1.

[0035] [Table 1] TIFF0007725557000003.tif141151

[0036] As can be seen from Table 1, oil-in-water lip cosmetics with good appearance and usability were obtained whether the dimethyl silicone oil was 5000CS or 100CS (Test Examples 1-1 and 1-3). However, when no dimethyl silicone oil was blended, as in Test Example 1-2, the glossiness was insufficient.

[0037] Next, the inventors investigated the amount of dimethyl silicone oil to be added. The results are shown in Table 2.

[0038] [Table 2] TIFF0007725557000004.tif130151

[0039] As can be seen from Table 2, when dimethyl silicone oil was included at 28% by mass, a good cosmetic composition was obtained in all categories (Test Example 1-1). Furthermore, when it was included at 5% by mass, no glossiness was obtained (Test Example 2-2). Further detailed investigation revealed that the optimum blending amount of dimethyl silicone oil is 10 to 40% by mass.

[0040] Next, the inventors investigated the type and amount of (B) a film-forming agent containing a hydrocarbon polymer that is incompatible with (A). The results are shown in Table 3.

[0041] [Table 3] TIFF0007725557000005.tif140161

[0042] As can be seen from Table 3, oil-in-water lip cosmetics with good appearance and feel were obtained regardless of the type of film-forming agent, as long as they were made of a hydrocarbon-based polymer (Test Examples 1-1, 3-3, and 3-4). However, even with an oily film-forming agent, trimethylsiloxysilicate did not show a sufficient effect of improving secondary adhesion, suggesting that this effect is unique to hydrocarbon-based polymers. It should be noted that isododecane, which is used as the hydrocarbon solvent for the film-forming agent, is volatile, while hydrogenated polyisobutene is non-volatile. Comparing Test Examples 3-1 and 3-4, excellent cosmetics can be obtained using either solvent, but when volatile isododecane was used, a firm film was formed, while when non-volatile hydrogenated polyisobutene was used, a flexible, moist gel-like film was formed. Furthermore, when Test Examples 3-2 and 3-3 are compared, it can be seen that an excellent feeling in use can be obtained, particularly when the amount of hydrocarbon polymer in the cosmetic is 0.5% by mass or more. As a result of further detailed investigation, it has become clear that the blending amount of the hydrocarbon polymer in the cosmetic is preferably 0.5 to 10 mass %, and particularly preferably 1 to 7 mass %. The amount of the film-forming agent, which is composed of a hydrocarbon polymer and a hydrocarbon solvent, blended in the cosmetic is preferably 5 to 30% by mass. The amount of hydrocarbon solvent in the film-forming agent is preferably 50 to 99 parts by mass from the viewpoints of manufacturability and spreadability during application.

[0043] Furthermore, the inventors compared the oil-in-water lip cosmetics obtained when an aqueous dye (F) was added with those obtained when a coloring material was added. The results are shown in Table 4.

[0044] [Table 4] TIFF0007725557000006.tif135134

[0045] As is clear from Table 4, when an oil-dispersible colorant was added to the oil-in-water lip cosmetic according to the present invention, the secondary adhesion-resisting effect was lost and the appearance became non-uniform (Test Example 4-1).

[0046] [Prescription example] Formulation example 1: Liquid lipstick Ingredients Amount (mass%) Ion-exchanged water Remaining 1,3-butylene glycol 7.0 Seteth -20 0.5 PEG-60 Hydrogenated Castor Oil 2.0 Ethylene propylene copolymer and isododecane 20.0 Hydrogenated Polyisobutene 3.0 Dimethicone (5000CS) 28.0 Ethanol 5.0 Acid Fuchsin 0.03 Yellow No. 4 0.03 (Dimethylacrylamide / Sodium Acryloyldimethyltaurate) Crosspolymer 0.05 (Acrylates / C10-30 alkyl acrylate) crosspolymer 0.1 (Hydroxyethyl acrylate / Sodium acryloyldimethyl taurate) copolymer 0.9 Potassium hydroxide 0.04 Bentonite 0.8 PEG / PPG-36 / 41 dimethyl ether 1.0 Rosa rosa fruit extract 0.1 Niacinamide 0.1

Claims

1. An oil-in-water lip cosmetic, characterized in that it contains the following components (A) to (E): (A) 10 to 40% by mass of dimethyl silicone oil having a viscosity of 100 CS to 50,000 CS (B) 5 to 30% by mass of a film-forming agent containing a hydrocarbon polymer and a hydrocarbon solvent that are incompatible with (A). (C) Non-silicone surfactant with an HLB of 12 or more: 1 to 4% by mass (D) Aqueous thickener 0.01 to 5% by mass (E) Water 25-70% by mass

2. The cosmetic according to claim 1, An oil-in-water lip cosmetic, characterized in that the hydrocarbon polymer of the film-forming agent is present in an amount of 0.5 to 10% by mass in the cosmetic.

3. 3. The oil-in-water lip cosmetic according to claim 2, wherein the film-forming agent contains a hydrocarbon solvent that dissolves the hydrocarbon polymer.

4. 4. The oil-in-water lip cosmetic according to claim 3, wherein the hydrocarbon solvent is present in an amount of 50 to 99 parts by weight per 100 parts by weight of the film-forming agent.

5. 5. The oil-in-water lip cosmetic according to claim 1, wherein the hydrocarbon polymer (B) is selected from an ethylene monomer unit and / or a styrene monomer unit.

6. 6. The oil-in-water lip cosmetic according to claim 1, wherein the aqueous thickener (D) is an aqueous thickener comprising an acrylic acid-based polymer.

7. 7. The oil-in-water lip cosmetic according to claim 1, wherein the oil-in-water lip cosmetic does not contain a pigment.

8. 8. The oil-in-water lip cosmetic according to claim 1, further comprising 0.01 to 1.5% by mass of an aqueous dye (F).

9. 9. The oil-in-water lip cosmetic according to claim 1, further comprising (G) a moisturizing agent.

10. 10. The oil-in-water lip cosmetic according to claim 9, wherein the moisturizing agent (G) is represented by the following general formula (1), and the moisturizing agent (G) contains 0.1 to 5% by mass of an alkylene oxide derivative having a molecular weight of 1000 to 5000: 【Chemical 1】 (In the formula, AO represents an oxyalkylene group having 3 to 4 carbon atoms, EO represents an oxyethylene group, p represents the average number of moles of oxyalkylene group having 3 to 4 carbon atoms, and q represents the average number of moles of oxyethylene group added, respectively, and 1≦p≦70 and 1≦q≦70. The ratio of oxyethylene groups to the total of oxyalkylene groups and oxyethylene groups is 20 to 80 mass %.) The oxyalkylene groups and oxyethylene groups may be added in a block or random manner, and R １ and R ２ are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, and R １ and R ２ The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

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