Emulsified cosmetic composition

Abstract

To provide emulsified cosmetic compositions that have excellent moisturizing effect, have a little sticky feeling, have excellent skin-plump feeling after application, and even if concealer and powder foundation are layered on the skin, hardly allow the makeup to smudge.SOLUTION: An emulsified cosmetic composition of the present invention contains: 0.1 to 20 mass% of component (A); 0.005 to 0.5 mass% of component (B); 0.1 to 10 mass% of component (C); and 0.01 to 1 mass% of component (D), the total mass ratio of component (A) and component (C) being 1 to 25 mass%. (A) One or more selected from the group consisting of alkylene oxide addition derivatives represented by the formula Z-[O(EO)a(PO)b-(BO)c-H]n(I); (B) a copolymer containing a structural unit based on 2-(meth) acryloyloxy ethyl phosphorylcholine and a structural unit based on alkyl (meth)acrylates; (C) an ester compound of fatty acids with 8 to 22 carbon atoms and tetravalent to hexavalent polyhydric alcohols with 5 to 10 carbon atoms; and (D) an acrylic thickener.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an emulsion cosmetic composition. [Background technology]

[0002] The skincare market has expanded in recent years, with anti-aging products experiencing particularly strong growth. This growth is driven by the increasing elderly population and growing awareness of anti-aging care among younger generations, resulting in an ever-increasing demand for cosmetics that maintain youthful skin. Maintaining youthful skin requires a certain level of moisture retention, but aging and the effects of ultraviolet rays can reduce this ability, making skin more susceptible to dryness. Therefore, skincare cosmetics are used to hydrate the skin and prevent dryness. Demand for emulsion cosmetics, which not only hydrate but also inhibit moisture loss by forming a film of oil on the skin, is particularly high.

[0003] The usability of emulsion cosmetics that consumers prefer includes, for example, non-stickiness and excellent moisturizing properties. Various moisturizing agents are used to provide excellent moisturizing properties, and polyhydric alcohols, hyaluronic acid, and their analogs are known to have high moisture-retaining properties. However, cosmetics containing high concentrations of specific polyhydric alcohols or hyaluronic acid have the problem of feeling sticky during use.

[0004] To date, a composition containing high molecular weight hyaluronic acid, low molecular weight hyaluronic acid, and polysaccharides has been proposed to enhance moisturizing sensation (Patent Document 1). This cosmetic product provides excellent moisturizing sensation, but there is room for improvement in reducing stickiness. Patent Document 2 proposes an oil-in-water emulsion composition containing oil that is liquid at 40°C, polyoxyethylene sorbitol beeswax, higher alcohol, and N-acyl amino acid and / or its salt. This cosmetic product is excellent in terms of moisturizing sensation and reducing stickiness.

[0005] Furthermore, in order to maintain youthful skin, it is important to make the skin plump, and there is a demand for cosmetics that provide an excellent plump feeling after use. Patent Document 3 proposes a translucent lotion base containing a hydrophilic surfactant, a lipophilic surfactant, a specific water-containing oil, an ethylene oxide derivative, and water. This technology has achieved a certain improvement in the plump feeling. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2011-513481 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-139395 [Patent Document 3] Japanese Patent Application Laid-Open No. 2013-189408 Summary of the Invention [Problem to be solved by the invention]

[0007] On the other hand, the generation concerned about anti-aging often uses concealer in combination with powder such as powder foundation or face powder for makeup. In such cases, the makeup may not adhere well, causing it to smudge and become more noticeable, and in environments such as air-conditioned offices, makeup tends to smudge more easily over time. Under such conditions, there is room for improvement in preventing makeup from smudged when concealer and powder foundation are layered, and it has been found that the cosmetics disclosed in Patent Documents 2 and 3 are insufficient.

[0008] Therefore, an object of the present invention is to provide an emulsified cosmetic composition that has excellent moisturizing effect, is less sticky, leaves the skin feeling plump after application, and prevents makeup from smudging even when a concealer and powder foundation are applied on top of each other. [Means for solving the problem]

[0009] The present inventors have conducted extensive research to solve the above problems, and have discovered that by incorporating a specific alkylene oxide addition derivative, a specific copolymer, an ester oil of a fatty acid and a tetrahydric to hexahydric polyalcohol, and a polymeric emulsifier in combination into an emulsion cosmetic composition, the composition has excellent moisturizing effect, is less sticky, leaves the skin feeling plump after application, and is less likely to crease even when concealer and powder are applied over the skin, thereby completing the present invention.

[0010] That is, the present invention is as follows. The following component (A) 0.5 ~ 5 % by mass, 0.005 to 0.5% by mass of component (B), and 1 ~ 4 % by mass and 0.01 to 1% by mass of component (D), and the total content of component (A) and component (C) is 3 ~ 7 % by mass of the emulsion cosmetic composition. (A) An alkylene oxide adduct derivative represented by the following formula (I): Z-[O(EO)a(PO)b-(BO)cH]n ···(I) (In formula (I), Z is a residue obtained by removing all hydroxyl groups from a compound having 3 or 4 hydroxyl groups, n is the number of hydroxyl groups in the compound having 3 or 4 hydroxyl groups, EO, PO, and BO represent an oxyethylene group, an oxypropylene group, and an oxybutylene group, respectively; a, b, and c are the average number of moles of the oxyethylene group EO, the oxypropylene group PO, and the oxybutylene group BO added, respectively, and satisfy the following conditions: 0≦a≦20, 0≦b≦10, 0≦c≦5, and 1≦a+b; When a and b are not both 0, the oxyethylene group EO and the oxypropylene group PO are added randomly or in blocks, The molar ratio of the oxypropylene groups PO to the oxyethylene groups EO (PO / EO) is 1 / 5 to 5 / 1. (B) A copolymer containing a structural unit based on 2-(meth)acryloyloxyethyl phosphorylcholine represented by the following formula (II) and a structural unit based on alkyl (meth)acrylate represented by the following formula (III): [ka] (In formula (II), R 1 represents a hydrogen atom or a methyl group. [ka] (In formula (III), R 2 represents a hydrogen atom or a methyl group, R 3 represents an octyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, or an octadecyl group. (C) Ester compounds of fatty acids having 8 to 22 carbon atoms and polyhydric alcohols having 4 to 6 valences and 5 to 10 carbon atoms (D) Polyacrylic acid amide compound [Effects of the Invention]

[0011] The emulsion cosmetic composition of the present invention has excellent moisturizing effect, is less sticky, leaves the skin feeling plump after application, and is less likely to crease even when concealer and powder are applied over the skin. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described. The emulsion cosmetic composition of the present invention contains at least the following components (A), (B), (C) and (D). Each component will be explained below.

[0013] (A) Alkylene oxide adduct represented by formula (I) Z-[O(EO)a(PO)b-(BO)cH]n ···(I) In formula (I), Z is a residue obtained by removing all hydroxyl groups from a compound Z(OH)n having 3 or 4 hydroxyl groups, n is the number of hydroxyl groups in the compound having the residue represented by Z, and EO, PO, and BO represent an oxyethylene group, an oxypropylene group, and an oxybutylene group, respectively. In formula (I), if n is less than 3, the fluffy feeling may not be sufficiently exhibited, and if n is greater than 4, stickiness may occur. Preferably, n=4.

[0014] The oxypropylene group represented by PO may be either a straight-chain or branched-chain group, but is preferably an oxypropylene group derived from propylene oxide (1,2-epoxypropane). The oxybutylene group represented by BO may be either a straight-chain or branched-chain oxybutylene group, but is preferably an oxybutylene group derived from 1,2-butylene oxide.

[0015] a, b, and c are the average numbers of moles of EO, PO, and BO added, respectively, and satisfy the following conditions: 0≦a≦20, 0≦b≦10, 0≦c≦5, and 1≦a+b. Preferably, 1≦a≦10, more preferably, 2≦a≦5, and particularly preferably, 2≦a≦4. Also, preferably, 0≦b≦5, and more preferably, b=0. Also, preferably, 0≦c≦1, and more preferably, c=0.

[0016] In the alkylene oxide addition derivative represented by formula (I), when a and b are not both 0, the values ​​are 1≦a≦20, 1≦b≦10, and 0≦c≦5, with 1≦a≦10, 1≦b≦5, and 0≦c≦2 being preferred, and 2≦a≦5, 1≦b≦3, and 1≦c≦2 being more preferred. The oxyethylene and oxypropylene groups may be added to the hydroxyl groups in either a random or block form, but to achieve a full, fluffy feel, a random addition is preferred, and the molar ratio of PO to EO (PO / EO) is 1 / 5 to 5 / 1, preferably 1 / 2 to 3 / 1, and more preferably 1 / 1 to 2 / 1. The oxybutylene groups are added to the terminals of the alkylene oxide chains in a block form.

[0017] The alkylene oxide addition derivative represented by formula (I) can be synthesized appropriately by a known alkylene oxide addition reaction. Alternatively, commercially available products such as "WILBRIDE (registered trademark) S-753" (in formula [I], a + b = 4.3, c = 1, n = 3, and the PO to EO content ratio (PO / EO) = 5 / 8 (molar ratio)) and "Macbiobride MG-10E" (in formula [II], a = 2.5, b = 0, c = 0, n = 4) available from NOF Corporation can also be used as component (A). One type of component (A) may be used alone, or two or more types may be used in combination.

[0018] When the total amount of the emulsion cosmetic composition of the present invention is taken as 100% by mass, the content of component (A) is 0.1 to 20% by mass. If the content of component (A) is too low, the plumpness and creasing-preventing effects may not be fully exhibited, which is undesirable, so the content is set to 0.1% by mass or more, preferably 0.2% by mass or more, and more preferably 0.5% by mass or more. Furthermore, if the content of component (A) exceeds 20% by mass, the after-use sensation becomes heavy on the skin, which is undesirable and results in a sensation unique to moisturizing agents, so the content is set to 20% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less.

[0019] (B) A copolymer containing structural units represented by formula (II) and formula (III) The component (B) used in the present invention is a copolymer containing structural units represented by formula (II) and formula (III). In the formula, "*" indicates the polymerization reaction bonding point of each structural unit. [ka] (In formula (II), R 1 represents a hydrogen atom or a methyl group. [ka] (In formula (III), R 2 represents a hydrogen atom or a methyl group, and R 3 teeth, Octyl, dodecyl, tetradecyl, hexadecyl, or octadecyl group indicates.)

[0020] The structural unit represented by the above formula (II) is a structural unit based on 2-(meth)acryloyloxyethyl phosphorylcholine. Here, "(meth)acryloyl" means "acryloyl or methacryloyl." The structural unit represented by the above formula (III) is a structural unit based on alkyl (meth)acrylate. Here, "(meth)acrylic acid" means "acrylic acid or methacrylic acid." The alkyl group in the alkyl (meth)acrylate is a linear or branched alkyl group having 4 to 18 carbon atoms, preferably a linear alkyl group. Examples of such alkyl groups include butyl, octyl, dodecyl, tetradecyl, hexadecyl, and octadecyl groups. Of these, butyl or octadecyl groups are preferred, and octadecyl groups (also known as stearyl groups) are more preferred.

[0021] When the amount of the structural unit represented by formula (II) is n1 and the amount of the structural unit represented by formula (III) is n2, the ratio (n1:n2) of the content of the structural unit represented by formula (II) to the content of the structural unit represented by formula (III) in the copolymer is preferably 10:1 to 1:5 in molar ratio, more preferably 7:1 to 1:4, and particularly preferably 5:1 to 1:3.

[0022] The weight-average molecular weight of the copolymer (component (B)) is typically 10,000 to 1,000,000, preferably 30,000 to 900,000, and more preferably 50,000 to 800,000. If the weight-average molecular weight of the copolymer is less than 10,000, moisture retention and wrinkle prevention may be impaired, while if the weight-average molecular weight of the copolymer is more than 1,000,000, handling may become difficult. The weight-average molecular weight of the copolymer is measured by gel permeation chromatography (GPC) and is expressed as a molecular weight converted into polyethylene glycol.

[0023] The polymerization form of the copolymer is not particularly limited, and may be a random copolymer or a block copolymer, with a random copolymer being preferred. The present copolymer may not contain any other structural units than those represented by the above formulas (II) and (III). When the present copolymer contains structural units other than those represented by the above formulas (II) and (III), the content of the other structural units in the copolymer is 40 mol % or less, preferably 20 mol % or less.

[0024] The copolymer can be produced by a known method, for example, by polymerizing a monomer mixture containing 2-(meth)acryloyloxyethyl phosphorylcholine and alkyl (meth)acrylate, and, if necessary, monomers corresponding to the other structural units, in the presence of a radical polymerization initiator under an inert gas atmosphere such as nitrogen, by a known method such as solution polymerization. The ratio of the amounts of the monomers charged in this case may be set to a ratio corresponding to the ratio of the contents of the structural units in the copolymer, component (B).The topical skin preparation of the present invention may contain one type of copolymer, component (B), alone or in combination of two or more types.

[0025] The copolymer can be produced by the polymerization method described above and used, but commercially available products such as "Lipidure (registered trademark)-PMB," "Lipidure (registered trademark)-S," "Lipidure (registered trademark)-NA," and "Lipidure (registered trademark)-NR" (manufactured by NOF Corporation) can also be used.

[0026] In the present invention, the content of component (B) is 0.005 to 0.5% by mass, assuming the total amount of the emulsion cosmetic composition to be 100% by mass. If the content of component (B) is less than 0.005% by mass, the moisturizing properties and creep-in suppression effects may not be fully exhibited, so the content is set to 0.005% by mass or more, preferably 0.01% by mass or more, and more preferably 0.05% by mass or more. On the other hand, if the content of component (B) exceeds 0.5% by mass, stickiness may occur and the feeling of fullness may be reduced, so the content is set to 0.5% by mass or less, preferably 0.4% by mass or less, and more preferably 0.25% by mass or less.

[0027] (C) Ester compounds of fatty acids having 8 to 22 carbon atoms and polyhydric alcohols having 4 to 6 valences and 5 to 10 carbon atoms The component (C) used in the present invention is an ester compound of a fatty acid having 8 to 22 carbon atoms and a polyhydric alcohol having 4 to 6 valences and 5 to 10 carbon atoms. The fatty acid having 8 to 22 carbon atoms may be branched or linear, and is preferably a monovalent fatty acid. The fatty acid having 8 to 22 carbon atoms may be saturated or unsaturated, but is preferably saturated. The fatty acid having 8 to 22 carbon atoms may have a hydroxyl group or may be condensed. It may also contain rosin acid. The number of carbon atoms in the fatty acid having 8 to 22 carbon atoms is more preferably 12 or more, even more preferably 16 or more, and even more preferably 18 or less. Examples of fatty acids having 8 to 22 carbon atoms include ethylhexanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, isopalmitic acid, macadamia nut fatty acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, and behenic acid. Among these, stearic acid, hydroxystearic acid, hydroxystearic acid condensates, and rosin acid are preferred.

[0028] Examples of polyhydric alcohols having 4 to 6 hydroxyl groups and 5 to 10 carbon atoms include pentaerythritol, dipentaerythritol, sorbitol, etc. Tetrahydric to hexahydric alcohols mean that one molecule has 4 to 6 hydroxyl groups.

[0029] Component (C) may be used singly or in appropriate combination of two or more. Specific examples of ester oils of fatty acids and polyhydric alcohols include pentaerythrityl tetraisostearate, pentaerythrityl tetramyristate, pentaerythrityl tetraethylhexanoate, pentaerythrityl tetra(caprylate / caprate), dipentaerythrityl tri-polyhydroxystearate, dipentaerythrityl hexaisononanoate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosinate), and dipentaerythrityl tetra(hydroxystearate / isostearate). Of these, pentaerythrityl tetraethylhexanoate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosinate), and dipentaerythrityl tri-polyhydroxystearate are preferred, with dipentaerythrityl tri-polyhydroxystearate being more preferred.

[0030] When the total amount of the emulsion cosmetic composition of the present invention is taken as 100% by mass, the content of component (C) is 0.1 to 10% by mass. If the content of component (C) is less than 0.1% by mass, the moisturizing properties and plumpness may not be fully exhibited, so the content is set to 0.1% by mass or more, preferably 0.2% by mass or more, and more preferably 0.4% by mass or more. If the content of component (C) exceeds 10% by mass, stickiness may occur or the effect of preventing creasing may not be fully exhibited, so the content is set to 10% by mass or less, preferably 7% by mass or less, more preferably 5% by mass or less, and particularly preferably 3% by mass or less.

[0031] In the present invention, the total content of component (A) and component (C) ((A) + (C)) is preferably 1 to 25% by mass, more preferably 2 to 15% by mass, even more preferably 2 to 11% by mass, and particularly preferably 3 to 10% by mass, from the viewpoints of improving the moisturizing feeling, suppressing stickiness, improving the plumpness of the skin after application, and reducing the effect of suppressing creasing.

[0032] (D) Acrylic acid-based thickener The component (D) used in the present invention is an acrylic acid-based thickener. Component (D) preferably has the function of forming an emulsion as an emulsifier. Component (D) may be used alone or in combination of two or more.

[0033] The component (D) may be a polyacrylic acid amide compound.

[0034] Examples of polyacrylic acid amide compounds include polyacrylic acid amide, a copolymer of acrylic acid amide and acrylic acid (salt), a copolymer of acrylic acid (salt) and acryloyldimethyltaurine (salt), a copolymer of hydroxyalkyl acrylate and acryloyldimethyltaurine (salt), etc. Among these, polyacrylic acid amide is preferred.

[0035] Specifically, commercially available products that can be used include SEPIGEL 305, which contains polyacrylic acid amide; SIMULGEL NS, which contains hydroxyethyl acrylate-sodium acryloyldimethyltaurate copolymer, which is a copolymer of hydroxyalkyl acrylate and acryloyldimethyltaurate (salt); and SIMULGEL EG and SIMULGEL EPG (all manufactured by SEPPIC) which contain sodium acrylate-sodium acryloyldimethyltaurate copolymer, which is a copolymer of acrylic acid (salt) and acryloyldimethyltaurate (salt).

[0036] These acrylic acid thickeners may be in the form of salts. Examples of salts of acrylic acid thickeners include salts of alkali metals such as sodium and potassium; ammonium, ammonium derived from monoethanolamine and diethanolamine; and salts of basic amino acids such as arginine and lysine. These salts can be obtained by neutralizing the above-mentioned polymer with the above-mentioned salt.

[0037] When the total amount of the emulsion cosmetic composition of the present invention is taken as 100% by mass, the content of component (D) is 0.01 to 1% by mass from the viewpoint of emulsion stability. The content of component (D) is preferably 0.04% by mass or more, more preferably 0.05% by mass or more, and particularly preferably 0.1% by mass or more. The content of component (D) is preferably 0.8% by mass or less, more preferably 0.6% by mass or less.

[0038] In addition to the above components (A) to (D), the emulsion cosmetic composition of the present invention may contain additive components that are generally blended into cosmetics, as appropriate depending on the purpose, as long as the effects of the present invention are not impaired. Such additive components may include moisturizers, plant extracts, anti-inflammatory and anti-chattering agents, UV absorbers, UV scattering agents, preservatives, chelating agents, pH adjusters, fragrances, etc. These additive components may be contained alone or in combination of two or more depending on the purpose. Furthermore, when the emulsion cosmetic composition of the present invention contains additive components other than components (A) to (D), when the total amount of the emulsion cosmetic composition is 100% by mass or less, the total amount of the additive components is preferably 50% by mass or less, more preferably 45% by mass or less, and even more preferably 40% by mass or less.

[0039] The emulsion cosmetic composition of the present invention typically contains water as the balance in addition to components (A) to (D) and the additive components described above. [Example]

[0040] <Evaluation criteria> The panel consisted of 20 women in their 40s to 60s, and they conducted a sensory evaluation of the following four items: "moisturizing sensation," "non-stickiness on skin after application," "fullness on skin after application," and "effectiveness in preventing smudging when applied multiple times."

[0041] (1) Moisturizing After washing the face, 1 g of each emulsion cosmetic composition of the Examples and Comparative Examples was applied to the entire face, and the moisturizing feeling after 1 hour was scored according to the following evaluation criteria. The total score of the evaluation points of the 20 panelists was calculated and evaluated according to the following criteria. If the total score was 30 points or more and no panelists scored 0 points, the emulsion cosmetic composition was judged to have excellent moisturizing feeling. <Evaluation criteria> 2 points: You can feel the moist feeling as if your hands are sticking to your skin. 1 point: I can feel a slight moist feeling, as if my hands are sticking to my skin. 0 points: I don't feel any moisturizing sensation that makes my hands stick to my skin. <Judgment criteria> ◎: Total score is 35 points or more ○: Total score is between 30 and 34 points △: Total score is 29 points or less

[0042] (2) No stickiness on the skin after application After washing the face, 1 g of each emulsion cosmetic composition of the Examples and Comparative Examples was applied to the entire face, and the lack of stickiness after the cosmetic composition had fully absorbed was scored according to the following evaluation criteria. The total score of the evaluation points of the 20 panelists was calculated and evaluated according to the following criteria. If the total score was 30 points or more and no panelists received an evaluation score of 0 points, the emulsion cosmetic composition was judged to be excellent in lack of stickiness. <Evaluation criteria> 2 points: No stickiness felt. 1 point: Almost no stickiness is felt. 0 points: Slight stickiness is felt. <Judgment criteria> ◎: Total score is 35 points or more ○: Total score is between 30 and 34 points △: Total score is 29 points or less

[0043] (3) Plumpness of the skin after application After washing the face, 1 g of each emulsion cosmetic composition of the Examples and Comparative Examples was applied to the entire face, and the plumpness of the cheeks after the cosmetic composition had fully absorbed was scored according to the following evaluation criteria. The total score of the evaluations by the 20 panelists was calculated and evaluated according to the following criteria. If the total score was 30 points or more and no panelists received an evaluation score of 0 points, the emulsion cosmetic composition was judged to be excellent in plumpness. <Evaluation criteria> 2 points: Feels plump. 1 point: Feels a little plump. 0 points: No sense of plumpness. <Judgment criteria> ◎: Total score is 35 points or more ○: Total score is between 30 and 34 points △: Total score is 29 points or less

[0044] (4) Prevents creasing when applied multiple times 1 g of each emulsion cosmetic composition of the Examples and Comparative Examples was applied to the entire face, and once the emulsion cosmetic had blended into the skin, approximately 5 mg of concealer (BKT Liquid Concealer A) was applied around the eyes. Furthermore, approximately 60 mg of powder foundation (Elfer Professional Foundation Light Ochre) was applied to the entire face. In this state, the face was left in a room adjusted to a room temperature of 20°C and a humidity of 30% for 4 hours, and the makeup smearing in the areas where the makeup had been applied over multiple layers was scored according to the following evaluation criteria. The total scores of the 20 panelists were calculated and evaluated according to the following criteria. If the total score was 30 points or more and no panelists received a score of 0, the emulsion cosmetic composition was judged to have an excellent effect of suppressing makeup smearing when applied over multiple layers. <Evaluation criteria> 2 points: No wrinkles are visible. 1 point: Slight creases are observed. 0 points: Significant creasing is observed. <Judgment criteria> ◎: Total score is 35 points or more ○: Total score is between 30 and 34 points △: Total score is 29 points or less

[0045] [Table 1]

[0046] [Table 2]

[0047] * The amount of potassium hydroxide is adjusted appropriately so that the pH of each cosmetic composition is around 6.5. *1 Dipentaerythrityl hexahydroxystearate / hexastearic acid / hexarosinate: Cosmol 168ARV, manufactured by Nisshin Oillio Group Co., Ltd. *2 Dipentaerythrityl trihydroxystearate: Salacos WO-6, manufactured by Nisshin Oillio Group Co., Ltd. *3 (Acrylates / C10-30 alkyl acrylate) crosspolymer: Carbopol Ultrez 21, manufactured by Lubrizol Japan, Ltd. *4 Polyacrylic acid amide: SEPPIC, SEPIGEL 305 solid content (solid content 40% by mass) The polyacrylic acid amide content in the table is the solid content of SEPIGEL 305. *5 Methylpolysiloxane: DOWSIL SH 200 C Fluid 100cs, manufactured by Dow Toray Co., Ltd. *6 Triethylhexanoin: NOF Corporation, Panaceate 800B

[0048] [Table 3]

[0049] * The amount of potassium hydroxide is adjusted appropriately so that the pH of each cosmetic composition is around 6.5. *1 Dipentaerythrityl hexahydroxystearate / hexastearic acid / hexarosinate: Cosmol 168ARV, manufactured by Nisshin Oillio Group Co., Ltd. *2 Dipentaerythrityl trihydroxystearate: Salacos WO-6, manufactured by Nisshin Oillio Group Co., Ltd. *3 (Acrylates / C10-30 alkyl acrylate) crosspolymer: Carbopol Ultrez 21, manufactured by Lubrizol Japan, Ltd. *4 Polyacrylic acid amide: SEPPIC, SEPIGEL 305 solid content (solid content 40% by mass) The polyacrylic acid amide content in the table is the solid content of SEPIGEL 305. *5 Methylpolysiloxane: DOWSIL SH 200 C Fluid 100cs, manufactured by Dow Toray Co., Ltd. *6 Triethylhexanoin: NOF Corporation, Panaceate 800B

[0050] As is clear from Tables 1 and 2, all of the emulsified cosmetic compositions of the examples using the components of the present invention had excellent performance.

[0051] On the other hand, as is clear from Table 3, the comparative examples that did not satisfy any of the essential requirements were inferior in terms of moisturizing feeling, non-stickiness, fluffy feeling, and suppression of creasing, and therefore failed to achieve the object of the present invention. That is, in Comparative Example 1, the total amount (A+C) of the content ratio of component (A) and the content ratio of component (B) was low, so the skin felt less plump after application and the effect of preventing creasing when reapplied was also low. In Comparative Example 2, component (A) was not contained, and therefore the skin was less sticky and less fluffy after application, and the effect of preventing creasing when reapplied was also low. In Comparative Example 3, component (B) was not contained, and therefore the effect of inhibiting creasing when reapplied was low.

[0052] In Comparative Example 4, component (C) was not contained, so the skin felt less plump after application and the effect of preventing creasing when reapplied was also low. Comparative Example 5 did not contain component (C) and instead contained component (C'), a glycerin ester, which resulted in a less plump feeling on the skin after application and a lower effect in preventing creasing when reapplied. In Comparative Example 6, component (A) was not contained, and instead component (A') was contained, so the skin felt less plump after application and the effect of preventing creasing when reapplied was also low.

[0053] Other formulation examples of the emulsion cosmetic composition of the present invention are listed below as Examples 12 and 13. The emulsion cosmetic compositions of these Examples were also examined for the aforementioned moisturizing feel, non-stickiness, plumpness, and creep-in suppression effects, and all Examples were found to have excellent properties and gave favorable results.

[0054] Example 12: Preparation of cream (Cosmetics 12) Cosmetic 12 was prepared by heating and dispersing the ingredients shown in Table 4 in the amounts shown in Table 4 to 80°C, and then cooling to room temperature. The numbers in Table 4 represent mass %.

[0055] [Table 4]

[0056] Example 13 Preparation of Cosmetic Serum (Cosmetics 13) Cosmetic 13 was prepared by heating and dispersing the components shown in Table 5 in the amounts shown in Table 5 to 80°C, and then cooling to room temperature. The numbers in Table 5 represent mass %.

[0057] (Table 5) Polyoxyethylene methyl glucoside (10E.O.) 1 Polyoxyethylene methyl glucoside (10P.O.) 0.5 2-Methacryloyloxyethylphosphorylcholine-Stearyl methacrylate copolymer 0.05 Dipentaerythrityl tri-polyhydroxystearate 1 Pentaerythrityl tetraethylhexanoate 1 Polyacrylamide 0.1 Carboxyvinyl polymer 0.2 (Acrylates / C10-30 alkyl acrylate) crosspolymer 0.2 Olive oil fruit oil 3 Shea butter 0.5 (Dimethicone / vinyl dimethicone) crosspolymer 0.5 Methylpolysiloxane (100cs) 2 1,3-butylene glycol 2 Glycerin 5 Xanthan gum 0.1 Potassium hydroxide (appropriate amount) Nicotinamide 6 Polyoxyethylene Polyoxypropylene Glyceryl Ether (24E.O.) (24P.O.) 0.5 Phenoxyethanol 0.5 Water-soluble collagen 0.001 Hydrolyzed Collagen 0.001 Arnica flower extract 0.001 Kudzu Root Extract 0.001 Morus alba root bark extract 0.01 Peony root extract 0.001 Yuzu fruit extract 0.001 Job's Tears Seed Extract 0.001 Mugwort leaf extract 0.001 Lemon juice extract 0.001 Camellia Seed Extract 0.001 Rosa Centifolia Flower Extract 0.001 water remainder Total 100

Claims

[Claim 1] An emulsion cosmetic composition comprising the following components: 0.5 to 5 mass% of component (A), 0.005 to 0.5 mass% of component (B), 1 to 4 mass% of component (C), and 0.01 to 1% of component (D), wherein the total content of component (A) and component (C) is 3 to 7 mass%. (A) An alkylene oxide adduct represented by the following formula (I): Z-[O(EO)a(PO)b-(BO)c-H]n...(I) (In formula (I), Z is a residue obtained by removing all hydroxyl groups from a compound having 3 or 4 hydroxyl groups, n is the number of hydroxyl groups in the compound having 3 or 4 hydroxyl groups, EO, PO, and BO represent an oxyethylene group, an oxypropylene group, and an oxybutylene group, respectively; a, b, and c are the average number of moles of the oxyethylene group EO, the oxypropylene group PO, and the oxybutylene group BO added, respectively, and satisfy the following relationships: 0≦a≦20, 0≦b≦10, 0≦c≦5, and 1≦a+b; When both a and b are not 0, the oxyethylene group EO and the oxypropylene group PO are added in a random or block manner, The content ratio of the oxypropylene group PO to the oxyethylene group EO (PO / EO) is 1 / 5 to 5 / 1 in terms of molar ratio. (B) A copolymer containing a structural unit based on 2-(meth)acryloyloxyethyl phosphorylcholine represented by the following formula (II) and a structural unit based on alkyl (meth)acrylate represented by the following formula (III): 【Chemistry 1】 (In formula (II), R １ represents a hydrogen atom or a methyl group.) 【Chemistry 2】 (In formula (III), R ２ represents a hydrogen atom or a methyl group, R ３ represents an octyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, or an octadecyl group. (C) Ester compounds of fatty acids having 8 to 22 carbon atoms and polyhydric alcohols having 4 to 6 valences and 5 to 10 carbon atoms. (D) Polyacrylic acid amide compound

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