JP7824566B2 - Emulsified cosmetic composition - Google Patents

Description

The present invention relates to an emulsion cosmetic composition.

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

Consumer-favorite textures of emulsion cosmetics include a non-sticky feel and excellent moisturizing effect. A variety of humectants are used to provide excellent moisturizing properties, with polyhydric alcohols, hyaluronic acid, and their analogues known to have particularly high moisture-retaining properties. However, cosmetics containing high concentrations of certain polyhydric alcohols or hyaluronic acid have the problem of feeling sticky during use.

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). While this cosmetic product provides excellent moisturizing sensation, 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.

Furthermore, in order to maintain youthful skin, it is important to make the skin plump, and there is a demand for cosmetics that leave a 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 degree of improvement in the plump feeling.

Special Publication No. 2011-513481 JP 2013-139395 A JP 2013-189408 A

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 enough, causing it to smudge and become more noticeable, and in air-conditioned offices and other environments, makeup is more likely to smudge over time. Under these 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 in Patent Documents 2 and 3 are insufficient.

The object of the present invention is to provide an emulsified cosmetic composition that has excellent moisturizing effects, is less sticky, leaves the skin feeling plump after application, and prevents makeup from smudging even when concealer and powder foundation are applied over the skin.

The inventors conducted extensive research to solve the above problems and 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 into an emulsion cosmetic composition in combination, the composition has excellent moisturizing effects, 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, leading to the completion of the present invention.

That is, the present invention is as follows.
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):

(In formula (II), R ¹ represents a hydrogen atom or a methyl group.)

(In formula (III),
^R2 represents a hydrogen atom or a methyl group;
^R3 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

The emulsion cosmetic composition of the present invention has excellent moisturizing effects, 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.

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 described below.

(A) Alkylene oxide adduct derivative Z-[O(EO)a(PO)b-(BO)c-H]n represented by formula (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.

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.

a, b, and c are the average number of moles of EO, PO, and BO added, respectively, and are 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.

In the alkylene oxide addition derivative represented by formula (I), when a and b are not both 0, 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 configuration, but to achieve a fluffy feel, a random configuration 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 ends of the alkylene oxide chains in a block configuration.

The alkylene oxide addition derivative represented by formula (I) can be synthesized appropriately using known alkylene oxide addition reactions. Alternatively, commercially available products such as "WILBRIDE® 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), both available from NOF Corporation, can also be used as component (A). Component (A) may be used alone or in combination of two or more types.

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-suppressing effects may not be fully achieved, which is undesirable. Therefore, 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, resulting in a sensation unique to moisturizers, which is undesirable. Therefore, the content is set to 20% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less.

(B) Copolymer containing structural units represented by formula (II) and formula (III) 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.
(In formula (II), ^R1 represents a hydrogen atom or a methyl group.)
(In formula (III), ^R2 represents a hydrogen atom or a methyl group, and ^R3 represents an octyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, or an octadecyl group .)

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.

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

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 exceeds 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.

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.

The copolymer can be produced by a known production 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 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.

This copolymer can be produced using the polymerization method described above, 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.

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. Furthermore, 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.

(C) Ester Compound of Fatty Acid Having 8 to 22 Carbon Atoms and Tetrahydric to Hexahydric Polyhydric Alcohol Having 5 to 10 Carbon Atoms Component (C) used in the present invention is an ester compound of a fatty acid having 8 to 22 carbon atoms and a tetrahydric to hexahydric polyhydric alcohol having 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, with saturated fatty acids being preferred. 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 preferably 12 or more, 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.

Examples of polyhydric alcohols with tetrahydric to hexahydric alcohols and 5 to 10 carbon atoms include pentaerythritol, dipentaerythritol, and sorbitol. "Tetrahydric to hexahydric" means that one molecule contains 4 to 6 hydroxyl groups.

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/stearate/rosinate), and dipentaerythrityl tetra(hydroxystearate/isostearate). Of these, pentaerythrityl tetraethylhexanoate, dipentaerythrityl hexa(hydroxystearate/stearate/rosinate), and dipentaerythrityl tri-polyhydroxystearate are preferred, with dipentaerythrityl tri-polyhydroxystearate being more preferred.

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 it is set to 0.1% by mass or more, preferably 0.2% by mass or more, and even more preferably 0.4% by mass or more. Furthermore, if the content of component (C) exceeds 10% by mass, stickiness may occur or the effect of suppressing creasing may not be fully exhibited, so it is set to 10% by mass or less, preferably 7% by mass or less, more preferably 5% by mass or less, and especially preferably 3% by mass or less.

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.

(D) Acrylic Acid-Based Thickener Component (D) used in the present invention is an acrylic acid-based thickener. Component (D) preferably has the function of forming an emulsion type as an emulsifier. Component (D) may be used alone or in combination of two or more.

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

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.

Specific examples of commercially available products that can be used include SEPIGEL 305, which contains polyacrylic acid amide; SIMULGEL NS, which contains a 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 Corporation), which contain a sodium acrylate-sodium acryloyldimethyltaurate copolymer, which is a copolymer of acrylic acid (salt) and acryloyldimethyltaurate (salt).

These acrylic acid thickeners may be in the form of a salt. 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.

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. Furthermore, the content of component (D) is preferably 0.8% by mass or less, more preferably 0.6% by mass or less.

In addition to the above components (A) to (D), the emulsion cosmetic composition of the present invention may contain additive components that can generally be 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/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.

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.

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

(1) Moisture-retaining Feeling 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 moisture-retaining feel 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 moisture-retaining feel.

<Evaluation criteria>
2 points: I feel a moist feeling as if my hands are sticking to my skin.
1 point: There is a slight moist feeling, as if the hands are sticking to the skin.
0 points: There is no moist feeling that makes the hands stick to the skin.
<Judgment criteria>
◎: Total score is 35 points or more ○: Total score is 30 points to 34 points △: Total score is 29 points or less

(2) Non-stickiness of skin after washing 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 non-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 non-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 30 points to 34 points △: Total score is 29 points or less

(3) Post-face plumpness 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 determined to be excellent in plumpness.

<Evaluation criteria>
2 points: Feels plump.
1 point: A slight feeling of plumpness.
0 points: No sense of plumpness.
<Judgment criteria>
◎: Total score is 35 points or more ○: Total score is 30 points to 34 points △: Total score is 29 points or less

(4) Smearing Inhibitory Effect When Reapplied 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 degree of makeup smearing in the areas where the makeup had been reapplied 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 determined to have an excellent effect of suppressing makeup smearing when reapplied.

<Evaluation criteria>
2 points: No wrinkles are observed.
1 point: Slight creases are observed.
0 points: Significant creasing is observed.
<Judgment criteria>
◎: Total score is 35 points or more ○: Total score is 30 points to 34 points △: Total score is 29 points or less

* The amount of potassium hydroxide is adjusted appropriately so that the pH of each cosmetic composition is around 6.5.
*1 Dipentaerythrityl hexa(hydroxystearate/stearic acid/rosin acid): Cosmol 168ARV, manufactured by Nisshin Oillio Group Co., Ltd.
*2 Dipentaerythrityl tri-polyhydroxystearate: 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

* The amount of potassium hydroxide is adjusted appropriately so that the pH of each cosmetic composition is around 6.5.
*1 Dipentaerythrityl hexa(hydroxystearate/stearic acid/rosin acid): Cosmol 168ARV, manufactured by Nisshin Oillio Group Co., Ltd.
*2 Dipentaerythrityl tri-polyhydroxystearate: 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

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

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 any of the moisturizing feeling, non-stickiness, fluffy feeling, and suppression of creasing, and the object of the present invention could not be achieved.
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 plumpness of the skin after application was low and the effect of suppressing 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 poor.
In Comparative Example 3, component (B) was not contained, and therefore the effect of suppressing creasing when reapplied was low.

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 poor.
In Comparative Example 5, component (C) was not contained, and instead component (C'), a glycerin ester, was contained, so the skin felt less plump after application and the effect of preventing creasing when reapplied was also poor.
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 poor.

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 yielded favorable results.

Example 12: Preparation of cream
(Cosmetic 12)
Cosmetic 12 was prepared by heating and dispersing the components 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 %.

(Example 13 Preparation of cosmetic serum)
(Cosmetic 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 %.

(Table 5)

Polyoxyethylene methyl glucoside (10 E.O.) 1
Polyoxyethylene methyl glucoside (10P.O.) 0.5
2-Methacryloyloxyethyl phosphorylcholine/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 total remaining 100

Claims (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):

(In formula (II), R ¹ represents a hydrogen atom or a methyl group.)

(In formula (III),
^R2 represents a hydrogen atom or a methyl group;
^R3 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