JP2020186217A - Water-in-oil type emulsion cosmetic - Google Patents

Abstract

To provide a water-in-oil type emulsion cosmetic which provides a glossy and uniform finish, causes no tight feeling or powdery feeling to the skin after application and makes wrinkles inconspicuous even after the lapse of time.SOLUTION: There is provided a water-in-oil type emulsion cosmetic which comprises the following components (A), (B), (C) and (D): (A) 0.1 to 10 mass% of a nonvolatile phenyl-modified silicone, (B) 0.01 to 30 mass% of an ester oil selected from a pentaerythritol fatty acid ester which is liquid at 25°C and a dipentaerythritol fatty acid ester, (C) 0.01 to 20 mass% of a film-forming agent and (D) 1 to 20 mass% of a coloring pigment subjected to hydrophobic treatment.SELECTED DRAWING: None

Description

The present invention relates to a water-in-oil emulsified cosmetic.

Conventionally, cosmetics that adhere to the skin, obtain a uniform finish, and have excellent long-lasting makeup have been studied.
For example, in Patent Document 1, a water-in-oil emulsified cosmetic containing a silicone resin spherical elastic powder, a dextrin fatty acid ester, a non-volatile phenyl-modified silicone, and a volatile silicone oil is less likely to cause streak unevenness during application. It is described that it can be quickly adhered to the skin, has excellent pore covering power, and can obtain a uniform and matte finish.
In Patent Document 2, a water-in-oil emulsified cosmetic containing a siliconeized polysaccharide compound, a specific ester oil, and a hydrophobized coloring pigment has no film feeling on the skin after application, and the skin after application has no film feeling. It states that the finish is uniform, looks glossy, and does not look powdery.

JP-A-2017-114831 JP-A-2018-35092

However, with conventional cosmetics, the skin after application does not have a glossy and uniform finish, and there is a feeling of tension that is felt when the skin is dry.
In addition, there is a problem that there is a feeling of powder after applying the cosmetic, and over time, the powder accumulates in the wrinkles and the wrinkles become conspicuous.

The present inventors have solved the above-mentioned problems by using a combination of non-volatile phenyl-modified silicone, a specific ester oil, a film-forming agent, and a hydrophobized coloring pigment to obtain a water-in-oil emulsified cosmetic. Found to be obtained.

In the present invention, the following components (A), (B), (C) and (D):
(A) Non-volatile phenyl-modified silicone 0.1 to 10% by mass,
(B) Ester oil selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester liquid at 25 ° C. 0.01 to 30% by mass,
(C) Film forming agent 0.01 to 20% by mass,
(D) Hydrophobicized coloring pigment 1 to 20% by mass
Concerning water-in-oil emulsified cosmetics containing.

The water-in-oil emulsified cosmetic of the present invention provides a glossy and uniform finish, does not give a feeling of tension or powder to the skin after application, and wrinkles are not noticeable over time. ..

The phenyl-modified silicone of the component (A) is non-volatile. Here, the non-volatile means that 1 g of the oil agent is spread on a glass petri dish having a diameter of 48 mm and left at 25 ° C. and normal pressure for 24 hours, and then the mass loss rate is 1% or less.
Further, the component (A) preferably has a viscosity of 5 mm ² / s or more at 25 ° C., and preferably has a viscosity of 500 mm ² / s or less from the viewpoint of improving a glossy and uniform finish.
Examples of the component (A) include phenyltrimethicone, diphenylsiloxyphenyltrimethicone, trimethylsiloxyphenyldimethicone, diphenyldimethicone, and trimethylpentaphenyltrisiloxane.
Of these, one or more selected from phenyltrimethicone and diphenylsiloxyphenyltrimethicone are preferable, and diphenylsiloxyphenyltrimethicone is more preferable, from the viewpoint of improving a glossy and uniform finish.

As the component (A), one type or two or more types can be used, and the content improves a glossy and uniform finish, reduces the feeling of firmness and powderiness of the skin after application, and the lapse of time elapses. However, from the viewpoint of suppressing the conspicuous wrinkles, the total composition is 0.1 to 10% by mass, preferably 0.3 to 7% by mass, and more preferably 1 to 3% by mass.

The ester oil of the component (B) is selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester which are liquid at 25 ° C.
The liquid has fluidity and is liquid at 25 ° C. The melting point of the component (B) is preferably 20 ° C. or lower.

The fatty acid constituting the component (B) may be either a saturated fatty acid or an unsaturated fatty acid, from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time. Saturated fatty acids are preferred. Further, either a straight chain fatty acid or a branched chain fatty acid may be used, and the branched chain fatty acid is preferable from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time. Moreover, these fatty acids may have a hydroxy group.
Examples of such fatty acids include caproic acid, caprylic acid, 2-ethylhexanoic acid, isononanoic acid, caproic acid, lauric acid, melissic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, and behen. Examples thereof include acids, lignoseric acid, serotic acid, palmitic acid and melissic acid. Further, among the saturated fatty acids, saturated fatty acids having 16 to 28 carbon atoms are preferable. Examples of such fatty acids include palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid and the like. Saturated fatty acids having 16 to 22 carbon atoms are more preferable, and examples thereof include palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, and behenic acid.

The alcohols constituting the component (B) are pentaerythritol and dipentaerythritol. Among them, from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time. Dipentaerythritol is preferred.
Examples of the component (B) include pentaerythritol (behenic acid / polyhydroxystearic acid) pentaerythrityl as the pentaerythritol fatty acid ester, and dipentaerythrityl tripolyhydroxystearate and pentaisostearic acid as the dipentaerythritol fatty acid ester. Examples thereof include dipentaerythrityl and dipentaerythrityl tetraisostearate.
As the component (B), dipentaerythritol fatty acid ester is preferable from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time, and dipentaerythritol tripolyhydroxystearate and penta. One or more selected from dipentaerythritol isostearate and dipentaerythritol tetraisostearate is more preferable, one or more selected from dipentaerythritol pentaisostearate and dipentaerythritol tetraisostearate is more preferable, and dipentaerythritol tetraisostearate is even more preferable. preferable.

As the dipentaerythrityl tripolyhydroxystearate, a commercially available product such as Saracos WO-6 (manufactured by Nisshin Oillio) can be used, and as the dipentaerythrityl pentaisostearate, a commercially available product such as Saracos DP-518N (manufactured by Nisshin Oillio) can be used.
Further, dipentaerythrityl tetraisostearate and pentaerythrityl (behenic acid / polyhydroxystearic acid) can be produced according to a known method. For example, dipentaerythrityl tetraisostearate can be produced by the method described in the production example below.

As the component (B), one type or two or more types can be used to improve a glossy and uniform finish, reduce the feeling of firmness and powderiness of the skin after application, and even after a lapse of time. From the viewpoint of suppressing the conspicuousness of self, the content is 0.01 to 30% by mass, preferably 0.05 to 10% by mass, more preferably 0.08 to 5% by mass, and 0. 3 to 2% by mass is more preferable.

In the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) improves a glossy and uniform finish, reduces the feeling of firmness and powderiness of the skin after application, and takes time. From the viewpoint of suppressing the appearance of wrinkles even after the lapse of time, it is preferably 0.1 to 20, more preferably 0.7 to 13, and even more preferably 2 to 7.

Examples of the film-forming agent of the component (C) include those used in ordinary cosmetics, such as trimethylsiloxysilicic acid, a fluorine-modified silicone resin, and an acrylic silicone copolymer.

As trimethylsiloxysilicic acid, a compound having a crosslinked structure having a siloxane structure as a main skeleton and represented by [(CH ₃ ) ₃ SiO _1/2 ] _S [SiO ₂ ] _T (S is 1-3, T is preferably 0.5 to 8).

Further, the property may be liquid, gum-like, paste-like, solid-like or the like at 25 ° C., but the solid-like property is preferable from the viewpoint of suppressing wrinkles from being noticeable over time. It can also be used by dissolving it in a solvent. Examples of the solvent include silicone oil and hydrocarbon oil, and from the viewpoint of suppressing wrinkles from being noticeable over time, methyltrimethicone, dimethylpolysiloxane (2cs), dimethylpolysiloxane (6cs), octa One or more selected from methylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane are preferable, and one or more selected from methyltrimethicone, dimethylpolysiloxane (2cs), and decamethylcyclopentasiloxane. More preferably, one or more selected from dimethylpolysiloxane (2cs) and decamethylcyclopentasiloxane are even more preferable.

As the trimethylsiloxysilicic acid, the cosmetic labeling name "trimethylsiloxysilicate" (INCI name "Trimethylsiloxysilicate") is preferable, SR1000 (manufactured by Momentive Performance Materials Co., Ltd.), and KF-7312T which has been previously dissolved in a solvent. (60 mass% methyltrimethicone solution), KF-7312L (50 mass% dimethylpolysiloxane (2cs) solution), KF-7312J (50 mass% decamethylcyclopentasiloxane solution), KF-7312K (50 mass% dimethylpolysiloxane) Commercially available products such as siloxane (6cs) solution) (all manufactured by Shin-Etsu Chemical Industry Co., Ltd.) can be used.

The fluorine-modified silicone resin includes the following general formula (1):
R ¹ _g SiO _{(4-g) / 2} (1)
(In the formula, R ¹ represents a hydrocarbon group having 1 to 8 carbon atoms, a phenyl group, a hydroxyl group or a general formula −R ² −Rf (R ² represents a divalent alkylene group having 2 to 6 carbon atoms, and Rf is a carbon. a number indicating the 1-8 perfluoroalkyl group), an arbitrarily chosen a hydroxyl group and the general formula -R ² -Rf from the functional groups as an essential, g is 1.0 ≦ g ≦ average number 1. 8. R ¹ may be the same or different)
Those having a structure represented by are preferable.

Further, the fluorine-modified silicone resin is preferably in a solid state at 25 ° C. It can also be used by dissolving it in a solvent.
Examples of the solvent include silicone oil, and the silicone oil includes octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dimethylpolysiloxane (2cs) from the viewpoint of suppressing wrinkles from being noticeable over time. , One or more selected from dimethylpolysiloxane (10cs) is preferable, one or more selected from decamethylcyclopentasiloxane and dimethylpolysiloxane (10cs) is more preferable, and decamethylcyclopentasiloxane is more preferable. More preferred.

As such a fluorine-modified silicone resin, the cosmetic labeling name "trifluoroalkyldimethyltrimethylsiloxysilicate" (INCI name "Trifluoropropyldimethyl / Trimethylsiloxysilicate" is preferable, and XS66-B8226 (50% by mass% decamethylcyclo) previously dissolved in a solvent. Pentasiloxane solution), XS66-B8636 (50 mass% dimethylpolysiloxane (10cs) solution) (all manufactured by Momentive Performance Materials) and the like can be used.

Examples of the acrylic silicone copolymer include a vinyl polymer having a carbosiloxane dendrimer structure in the side chain, an acrylic-silicone graft copolymer, and the like.
As the vinyl-based polymer having a carbosiloxane dendrimer structure in the side chain, those described in JP-A-11-1530 and JP-A-2000-63225 are preferably used.
The vinyl polymer having a carbosiloxane dendrimer structure in the side chain may be liquid, gum-like, paste-like, solid-like, etc. at 25 ° C., but wrinkles are suppressed from being noticeable over time. From the viewpoint of making it, a solid state is preferable. Further, from the viewpoint of suppressing wrinkles from being noticeable over time, a solution or dispersion diluted with a solvent is preferable. Among them, it is preferable to use it as a dispersion diluted with liquid oil, and it is preferable to use one or more selected from silicone oil and hydrocarbon oil, from dimethylpolysiloxane, decamethylcyclopentasiloxane, and isododecane. It is more preferable to use one or more selected ones, more preferably one or more selected from decamethylcyclopentasiloxane and isododecane, and even more preferably decamethylcyclopentasiloxane.

As the vinyl-based polymer having a carbosiloxane dendrimer structure in the side chain, a silicone dendrimer-acrylic copolymer is preferable, and the cosmetic labeling name "(Acrylate / Polytrimethylsiloxymethacrylate Copolymer") (INCI name "Acrylates / Polytrimethylsiloxymethacrylate Copolymer") ) Is preferable, and commercially available products such as FA4001CM (30 mass% decamethylcyclopentasiloxane solution) and FA4002ID (40 mass% isododecane solution) (all manufactured by Toray Dowcorning Co., Ltd.) previously dissolved in a solvent can be used. ..

As the acrylic-silicone graft copolymer, it is preferable to use the one described in JP-A-2-25411.
The acrylic-silicone graft copolymer is preferably in the form of a solid at 25 ° C. from the viewpoint of suppressing the appearance of wrinkles over time.
Further, it is preferable to dissolve it in a solvent and use it from the viewpoint of suppressing wrinkles from being noticeable even after a lapse of time. Examples of the solvent include silicone oil and hydrocarbon oil. From the viewpoint of suppressing wrinkles from being noticeable over time, from methyltrimethicone, dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, and isododecane. One or more selected ones or two or more are preferable, one or two or more selected from methyltrimethicone, dimethylpolysiloxane (2cs), and decamethylcyclopentasiloxane are more preferable, and decamethylcyclopentasiloxane is even more preferable.

As the acrylic-silicone graft copolymer, the cosmetic labeling name "(Acrylates / Dimethicone) copolymer" (INCI name "Acrylates / Dimethicone Copolymer") is preferable, and KP545 (30 mass% decamethylcyclopenta) previously dissolved in a solvent is preferable. Commercial products such as siloxane solution), KP549 (40% by mass methyltrimethicone solution), and KP550 (40% by mass isododecane solution) (all manufactured by Shin-Etsu Chemical Industry Co., Ltd.) can be used.

As the film-forming agent of the component (C), trimethylsiloxysilicic acid and fluorine-modified silicone are used from the viewpoint of reducing the feeling of tension and powderiness of the skin after application and suppressing wrinkles from being noticeable over time. One or two or more selected from resins and acrylic silicone copolymers are preferable, and one or two selected from trimethylsiloxysilicic acid, fluorine-modified silicone resins, and vinyl polymers having a carbosiloxane dendrimer structure in the side chain. The above is more preferable, one or more selected from a vinyl polymer having a carbosiloxane dendrimer structure in a side chain and trimethylsiloxysilicic acid is more preferable, and one or more selected from trimethylsiloxysilicic acid is more preferable. Even more preferable.

As the component (C), one type or two or more types can be used, and the content improves a glossy and uniform finish, reduces the feeling of firmness and powderiness of the skin after application, and the lapse of time elapses. However, from the viewpoint of suppressing the appearance of wrinkles, the total composition is 0.01 to 20% by mass, preferably 0.1 to 12% by mass, more preferably 0.2 to 7% by mass, and 0. 8 to 3% by mass is more preferable.

In the present invention, the mass ratio (A) / (C) of the component (A) to the component (C) improves a glossy and uniform finish, reduces the feeling of firmness and powderiness of the skin after application, and takes time. From the viewpoint of suppressing the appearance of wrinkles even after the lapse of time, it is preferably 0.1 to 6, more preferably 0.31 to 3.2, and even more preferably 0.6 to 1.5.

In the present invention, the mass ratio (B) / (C) of the component (B) to the component (C) improves a glossy and uniform finish, reduces the feeling of firmness and powderiness of the skin after application, and takes time. From the viewpoint of suppressing the appearance of wrinkles even after the lapse of time, it is preferably 0.01 to 8, more preferably 0.02 to 4, further preferably 0.08 to 1.6, and 0.2. ~ 0.7 is even more preferable.

The component (D) used in the present invention is a hydrophobized coloring pigment.
The coloring pigments are those used in ordinary cosmetics, for example, titanium oxide, fine particle titanium oxide, zinc oxide, fine particle zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, dark blue, ultramarine blue. , Metal oxides such as chromium oxide and chromium hydroxide, metal complexes such as manganese violet and cobalt titanate, and inorganic pigments such as carbon black; organic pigments such as tar pigments and lake pigments, natural pigments such as carmine, etc. Can be mentioned.
As a coloring pigment, at least selected from titanium oxide, yellow iron oxide, black iron oxide, red iron oxide, fine particle titanium oxide, and fine particle zinc oxide from the viewpoint of improving a glossy and uniform finish and finishing the skin with a beautiful make-up effect. It is preferable to contain one or more kinds, and more preferably to contain at least one kind or two or more kinds selected from titanium oxide, yellow iron oxide, black iron oxide, red iron oxide, and fine particle zinc oxide, and titanium oxide and yellow oxidation. It is more preferable to contain at least one or more selected from iron, black iron oxide, and red iron oxide.

Examples of the hydrophobizing treatment of these coloring pigments include silicone treatment, fluorine treatment, fatty acid treatment, N-acylamino acid treatment and the like. Examples of the silicone treatment include methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, alkylalkoxysilane treatment and the like, and examples of the fluorine treatment include perfluoroalkylphosphate ester treatment and perfluoroalkylalkoxysilane treatment. Examples of the fatty acid treatment include stearic acid treatment and myristic acid treatment, and examples of the N-acylamino acid treatment include lauroyl lysine treatment, dilauroyl glutamate lysine Na treatment, stearoyl glutamate 2Na treatment, lauroyl aspartate Na treatment and the like. ..
As the hydrophobizing treatment, silicone treatment is used from the viewpoint of improving a glossy and uniform finish, reducing the feeling of tension and powderiness of the skin after application, and suppressing wrinkles from becoming noticeable over time. One or more selected from N-acylamino acid treatment is preferable, and one or more selected from methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, stearoylglutamic acid 2Na treatment, lauroyl aspartate Na treatment is more preferable. Preferably, one or more selected from dimethylpolysiloxane treatment and stearoyl glutamic acid 2Na treatment are more preferable. Further, those treated simultaneously by silicone treatment and N-acylamino acid treatment are preferable, and those treated simultaneously by dimethylpolysiloxane treatment and stearoyl glutamic acid 2Na treatment are more preferable.

In order to hydrophobize the coloring pigment, a dry treatment, a wet treatment or the like may be carried out by a usual method.
The treatment amount is preferably 0.1 to 20% by mass, more preferably 0.5 to 15% by mass, still more preferably 1 to 10% by mass, based on the mass of the coloring pigment.
The content of the component (D) means the mass including the hydrophobized agent.

As the component (D), one type or two or more types can be used to improve a glossy and uniform finish, reduce the powdery feeling of the skin after application, and wrinkles are conspicuous over time. From the viewpoint of suppressing the above, the content is 1 to 20% by mass, preferably 3 to 18% by mass, and more preferably 8 to 17% by mass in the total composition.

The water-in-oil emulsified cosmetic of the present invention can further contain volatile oil, reduce the feeling of tightness of the skin after application, and suppress wrinkles from becoming noticeable over time. Can be done. Here, the volatility is one having a flash point of 35 to 100 ° C.
The volatile oil may be any oil used in ordinary cosmetics, and examples thereof include silicone oil, hydrocarbon oil, and ether oil.
Examples of the silicone oil include chain dimethylpolysiloxane and cyclic dimethylpolysiloxane. The chain-like dimethylpolysiloxane may be either a straight chain or a branched chain, and examples of the linear dimethylpolysiloxane include dimethylpolysiloxane (1.5 cs) and dimethylpolysiloxane (2 cs). Examples thereof include methyltrimethicone, tris (trimethylsilyl) methylsilane, and tetrakis (trimethylsilyl) silane. Examples of the cyclic dimethylpolysiloxane include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
Examples of the hydrocarbon include isododecane, isotridecane, isohexadecane, light isoparaffin, light liquid isoparaffin and the like, and examples of the ether oil include ethyl perfluorobutyl ether and the like.

Of these, one or more selected from silicone oil and hydrocarbon oil are selected from the viewpoint of reducing the feeling of tension of the skin after application and suppressing wrinkles from becoming conspicuous over time. Preferably, one or more selected from dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, isododecane, and light isoparaffin is more preferable, and one or more selected from dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, or Two or more are even more preferable.

One type or two or more types of volatile oil can be used, and the content of the volatile oil is the total composition from the viewpoint of reducing the feeling of tightness of the skin after application and suppressing wrinkles from being noticeable over time. It is preferably 5 to 40% by mass, more preferably 8 to 35% by mass, and even more preferably 10 to 30% by mass.

The water-in-oil emulsified cosmetic of the present invention can further contain a plate-like powder, which reduces the powdery feeling of the skin after application and suppresses wrinkles from becoming noticeable over time. be able to.
Here, the plate-like shape includes not only a plate-like shape in a narrow sense but also a powder having a flaky shape, a scale-like shape, and the like.
The plate-like powder preferably has a volume average particle diameter of 1 to 100 μm, preferably 8 to 60 μm, from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from becoming conspicuous over time. Is more preferable, and 10 to 30 μm is even more preferable. Further, the aspect ratio of 10 to 80 is preferable, and 15 to 70 is more preferable.

In the present invention, the volume average particle size is measured by a laser diffraction scattering particle size distribution measuring device (manufactured by Seishin Enterprise Co., Ltd., LMS-350). Further, in the present invention, the volume average particle diameter is a volume-based average particle diameter, and is set to 50% median diameter.
The aspect ratio is calculated by the ratio of the volume average particle diameter to the average particle thickness, and is defined by the aspect ratio = (volume average particle diameter / average thickness).
The average thickness of the particles is obtained by averaging the thicknesses of 10 to 50 mother particles measured by observing with a scanning electron microscope or a transmission electron microscope.

Examples of the plate-shaped powder include plate-shaped cerium oxide, plate-shaped barium sulfate, talc, mica, plate-shaped kaolin, sericite, white mica, plate-shaped synthetic mica, phlogopite, red mica, black mica, and lepidolite. Plate-shaped silicic acid anhydride, plate-shaped hydroxyapatite, bentonite, montmorillonite, hectrite, plate-shaped ceramic powder, plate-shaped alumina, plate-shaped boron nitride, plate-shaped iron oxide, titanium oxide-coated mica, titanium oxide-treated mica, bismuth oxychloride , Titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, fish scale foil, titanium oxide-coated colored mica, aluminum, plate-shaped glass powder, and the like.
As the plate-like powder, talc, mica, plate-like synthetic mica, plate-like boron nitride, and plate are used from the viewpoint of reducing the feeling of powder on the skin after application and suppressing wrinkles from becoming noticeable over time. One or more selected from talc powder, one or more selected from talc, plate-shaped synthetic mica, and plate-shaped boron nitride are more preferable, and one selected from talc and plate-shaped boron nitride. Alternatively, two or more kinds are more preferable, and talc is even more preferable.

Further, the plate-shaped powder can be used as it is, or if necessary, a hydrophobized powder can be used as in the component (D).
When the plate-shaped powder is hydrophobized, its content, volume average particle diameter, and particle thickness are determined by the content including the hydrophobized agent, volume average particle diameter, and particle thickness. means.

One type or two or more types of plate-like powder can be used, and the content is from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time. In the total composition, 1 to 30% by mass is preferable, 1.5 to 20% by mass is more preferable, 2 to 10% by mass is further preferable, and 2.5 to 7% by mass is further preferable.

The water-in-oil emulsified cosmetic of the present invention can further contain spherical powder, reduce the powdery feeling of the skin after application, and suppress wrinkles from being noticeable over time. Can be done.
Here, the spherical shape may include a true sphere, a substantially spherical shape, a spheroid, and a spherical powder having an uneven surface.
The spherical powder preferably has a volume average particle diameter of 1 to 50 μm, preferably 2 to 30 μm, from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from becoming conspicuous over time. More preferably, 3 to 20 μm is further preferable.

Examples of the spherical powder include spherical polyamide resin, spherical polymethylmethacrylate resin, spherical polyurethane resin, spherical silicone resin, spherical polyethylene resin, spherical polystyrene resin, spherical cellulose resin, spherical polylactic acid resin, spherical silica and the like. .. Among them, spherical polymethyl methacrylate resin, spherical polyurethane resin, spherical silicone resin, spherical cellulose resin, spherical polylactic acid resin, and spherical silica are preferable, and spherical polyurethane resin, spherical cellulose resin, spherical polylactic acid resin, and spherical silica are more preferable. Spherical polyurethane resin is more preferred.

One type or two or more types of spherical powder can be used, and the content is all from the viewpoint of reducing the powdery feeling of the skin after application and suppressing wrinkles from being noticeable over time. In the composition, 0.1 to 20% by mass is preferable, 0.2 to 10% by mass is more preferable, and 0.3 to 5% by mass is further preferable.

In the water-in-oil emulsified cosmetic of the present invention, the water content is preferably 10 to 70% by mass, more preferably 15 to 60% by mass, still more preferably 20 to 50% by mass in the total composition. ..

In addition to the above components, the water-in-oil emulsified cosmetic of the present invention includes components usually used in cosmetics, such as powders other than the above, oily components other than the above, polymer compounds other than the above, and surfactants. It can contain antioxidants, fragrances, pigments, preservatives, pH regulators, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, refreshing agents and the like.

The water-in-oil emulsified cosmetic of the present invention can be produced according to a usual method, and can be made into a liquid, emulsion, paste, cream, gel or other dosage form, liquid, emulsion, etc. Creamy is preferable.
The water-in-oil emulsified cosmetic of the present invention is a makeup base, foundation, concealer; make-up cosmetics such as blusher, eye shadow, mascara, eyeliner, eyebrow, overcoat agent, lipstick; sunscreen emulsion, It can be applied as an ultraviolet protective cosmetic such as a sunscreen cream. Of these, makeup bases and foundations are more preferable.
The water-in-oil emulsified cosmetic of the present invention can be used alone or in layers of powder foundations such as liquid foundations, powder foundations and white powders.

Production Example 1 (Production of dipentaerythrityl tetraisostearate):
Dipentaerythritol [trade name: Dipentalit, manufactured by Koei Chemical Industries, Ltd.] 58.4 g (0.23 mol) in a 3 L 4-lottler equipped with a stirrer, a thermometer, a nitrogen gas blowing pipe and a water separation pipe. 2- (1,3,3-trimethyl) butyl-5,7,7-trimethyloctanoic acid [trade name: isostearic acid, manufactured by Nissan Chemical Industries, Ltd.] 293.9 g (1.03 mol) was charged (raw material preparation). Mass ratio = 10: 50.3). Then, 0.05% by mass of dibutyltin oxide (catalyst) and 5% by mass of xylene (reflux solvent) were added to the total amount charged, and the reaction was carried out at 200 to 250 ° C. for about 21 hours with stirring. After completion of the reaction, xylene, which is a reflux solvent, was distilled off under reduced pressure. The reaction product from which xylene was removed was adsorbed with activated clay, then cooled to about 60 ° C., filtered, and deodorized and distilled by a conventional method to obtain 245 g of dipentaerythrityl tetraisostearate.
The viscosity of dipentaerythrityl tetraisostearate at 25 ° C. was 350,000 mPa · s, and it was liquid at 25 ° C. The viscosity was determined by using a Brookfield type viscometer (BH type) at 25 ° C. 6 was used and measured at 2 rpm.

Examples 1-7 and Comparative Examples 1-3
A water-in-oil emulsified cosmetic (foundation) having the composition shown in Table 1 is manufactured, and the skin has a uniform luster after application, no skin tension after application, no powdery feeling on the skin after application, and The inconspicuousness of wrinkles after 5 hours of application was evaluated. The results are also shown in Table 1.

(Manufacturing method)
The powder phase component was mixed and pulverized, added to the separately mixed oil phase component, and dispersed at a disper (2000 rpm) for 10 minutes. Then, the aqueous phase component was added, and the mixture was stirred with a disper (800 rpm) for 10 minutes to obtain a water-in-oil emulsified cosmetic.

(Evaluation methods)
(1) Uniform luster of the skin after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsified cosmetic to the face using a sponge, and visually evaluated the uniform glossiness of the face immediately after application in the following five stages. The results are shown by the total score of 5 people. The uniform glossiness means that the face is glossy as a whole and the face looks bright as a whole.
5; The gloss looks fairly uniform.
4; The gloss looks uniform.
3; The gloss looks a little uniform.
2; The gloss does not look very uniform.
1; The gloss is clearly not uniform.

(2) No feeling of tension on the skin after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsified cosmetic to the face using a sponge, and sensory-evaluated the feeling of tightness of the face immediately after application in the following five stages. The results are shown by the total score of 5 people. The feeling of tension is a feeling that is felt when the skin is dry, and indicates a feeling that the skin is pulled while having a feeling of bare skin.
5; There is no feeling of tension.
4; There is no feeling of tension.
3; There is not much tension.
2; There is a feeling of tension.
1; There is a considerable feeling of tension.

(3) No powdery feeling on the skin after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsified cosmetic to the face using a sponge, and visually evaluated the powdery feeling immediately after application in the following five stages. The results are shown by the total score of 5 people.
5; There is no feeling of powder.
4; No powdery feeling.
3; There is not much powdery feeling.
2; There is a feeling of powder.
1; There is a considerable powdery feeling.

(4) Inconspicuous wrinkles after 5 hours of application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsified cosmetic to the face using a sponge, and 5 hours after application, the conspicuous fine wrinkles around the mouth were removed. Was visually evaluated in the following five stages as compared with before coating. The results are shown by the total score of 5 people.
5; Wrinkles are clearly inconspicuous.
4; Wrinkles are not noticeable.
3; Wrinkles are not very noticeable.
2; Wrinkles are a little noticeable.
1; Wrinkles are quite noticeable.

Prescription example 1
A water-in-oil emulsified cosmetic (foundation) having the composition shown in Table 2 was produced in the same manner as in Examples 1 to 7.
The obtained water-in-oil emulsified cosmetic has a uniform luster on the skin after application, does not have a powdery or taut feeling, and wrinkles are not noticeable over time.

Claims (5)

The following components (A), (B), (C) and (D):
(A) Non-volatile phenyl-modified silicone 0.1 to 10% by mass,
(B) Ester oil selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester liquid at 25 ° C. 0.01 to 30% by mass,
(C) Film forming agent 0.01 to 20% by mass,
(D) Hydrophobicized coloring pigment 1 to 20% by mass
Water-in-oil emulsified cosmetic containing. The water-in-oil emulsified cosmetic according to claim 1, wherein the mass ratio (B) / (C) of the component (B) to the component (C) is 0.01 to 8. The water-in-oil emulsified cosmetic according to claim 1 or 2, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.1 to 20. The oil according to any one of claims 1 to 3, wherein the film-forming agent of the component (C) is one or more selected from trimethylsiloxysilicic acid, fluorine-modified silicone resin and acrylic silicone copolymer. Water-based emulsified cosmetics. The water-in-oil type according to any one of claims 1 to 4, wherein the hydrophobized coloring pigment of the component (D) contains one or more selected from the coloring pigments treated with N-acylamino acids. Emulsified cosmetics.