JP2001220316A - Cosmetic composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic composition giving nonsticky, favorable feeling when applied, with the aqueous phase clear in appearance and the oily phase spherically dispersed in the aqueous phase and the interface of the spherical oil droplets clear, with the oily ingredient stably dispersed in a spherical form in high reproducibility after applied. SOLUTION: This cosmetic composition comprises an aqueous phase, oily phase and powdery ingredient, with the oily phase spherically dispersed in the aqueous phase; wherein the powdery ingredient to be used is hydrophobicized silica.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition containing an aqueous phase, an oily phase and a powdery component, wherein the oily phase is spherically dispersed in the aqueous phase. More specifically, the oily component is stably dispersed in the aqueous phase in a spherical form, has a beautiful appearance, and when used under shaking, the oily component easily mixes with the aqueous phase and becomes uniform.
In addition, the present invention relates to a cosmetic composition which has an excellent feel upon use and in which the oil component is stably dispersed in a spherical form with good reproducibility after use.

[0002]

2. Description of the Related Art Conventionally, in a cosmetic composition containing an oil phase and an aqueous phase, it is necessary to add a surfactant in order to stably mix oils and fragrances. Things were mainstream.

[0003] In a solubilized cosmetic composition that is transparent in appearance,
In order to stably blend oils and fragrances at high levels, it is necessary to incorporate a large amount of a surfactant in order to solubilize these components, which causes problems in use such as stickiness and skin caused by the surfactant. There were problems such as irritation anxiety.
In the solubilized cosmetic composition containing a large amount of alcohol, some oils and fragrances are solubilized without incorporating a surfactant, and a cosmetic composition having a transparent appearance can be obtained. , Oil and perfume were limited.

On the other hand, in the case of an emulsion type cosmetic composition, it is possible to mix a large amount of oil, but there is a problem that it is difficult to obtain a transparent cosmetic in appearance.

[0005] In contrast to the above conventional techniques, a technique for obtaining a cosmetic in which an oily component is dispersed in an aqueous phase by using a powder component instead of a surfactant is disclosed in Japanese Patent Publication No. 48-11951 and Japanese Patent Application Laid-Open No. No. 127836, JP-A-4-275208 and the like.

[0006] The technology disclosed in these publications is not only beautiful in appearance since the oily component is dispersed in the water phase as oil droplets but in a spherical form. An oily active ingredient can be compounded, and it is excellent in safety.

However, the cosmetic described in JP-B-48-11951 has a problem that the oil droplet interface becomes cloudy. Further, in the cosmetic described in JP-A-53-1227836, the oil component to be blended is only a liquid hydrocarbon, and only a specific ethyl cellulose-alcohol solution can be used to form an oil droplet interface. Feeling is limited. Further, the cosmetic described in JP-A-4-275208 has a problem that a large amount of fragrance cannot be blended.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method in which an aqueous phase is transparent in appearance, an oily component is stably dispersed and mixed in a spherical form, and An object of the present invention is to provide a cosmetic composition in which the interface of oil droplets is transparent, has a good feeling of use without stickiness, and after use, the oily component is stably dispersed in a spherical form with good reproducibility. .

[0009]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, by selecting and using a particular powder from among a large number of powder components, the oil phase was converted to water. The present invention has been found to be able to disperse as a stable oil droplet in the phase, and furthermore, to obtain a cosmetic composition in which not only the aqueous phase is excellent in transparency but also the oil droplet interface is excellent in transparency. Reached.

That is, the present invention relates to a cosmetic composition comprising an aqueous phase, an oil phase and a powder component, wherein the oil phase exhibits a spherical shape and is dispersed in the aqueous phase. The present invention relates to a cosmetic composition characterized by being used.

In the above cosmetic composition, the hydrophobic silica has a primary average particle diameter of 1 to 50 nm and a specific surface area (BET).
Method) is preferably ¹⁰ to 500 m ² / g.

In the above cosmetic composition, the apparent specific gravity of the hydrophobized silica is preferably 20 to 100 g / l.

[0013] In the above cosmetic composition, it is preferable to add the hydrophobized silica at a ratio of 0.001 to 20% by weight based on the total amount of the oil phase.

In the above cosmetic composition, the total amount of the oil phase is preferably 0.1 to 40% by weight based on the total amount of the cosmetic composition.

[0015] In the above cosmetic composition, it is preferable that the aqueous phase contains a lower alcohol.

It is preferable that the cosmetic composition contains substantially no surfactant.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

In the present specification, the term "total oil component (total oil phase)" means an oil component (including polar oils and non-polar oils).
It refers to the total amount, and when it further contains a fragrance, it refers to the total blended amount of the oil component and the fragrance.

The present invention is characterized in that hydrophobically treated silica (hydrophobicized silica) is used as a powder component.
The “silica” generally includes silicon dioxide (silicic anhydride) represented by SiO ₂ , hydrous silicic acid, colloidal silica, and the like. In the present invention, silicic anhydride is preferably used.

As the method of hydrophobizing treatment, any method can be used as long as it can impart water repellency to silica. The method is not limited, and examples thereof include a gas phase method, a liquid phase method, an autoclave method and a mechanochemical method. An ordinary surface treatment method can be used.

For example, when the treatment is carried out by adding a hydrophobizing agent to the raw material powder, it may be diluted with an appropriate solvent (dichloromethane, chloroform, hexane, ethanol, xylene, volatile silicone, etc.) and added. You may add directly. For mixing and stirring the powder and the treating agent, a ball mill, a Hogersight ball mill, a vibrating ball mill, an attritor, a pot mill, a rod mill, a pan mill, a homomixer, a homodisper, a Henschel mixer, a Nauter mixer, and the like can also be used. In addition, a method in which a cyclic organosiloxane is polymerized on the powder surface at a low temperature of 100 ° C. or less by a gas phase reaction utilizing the activity of the powder surface (Japanese Patent Publication No. 1-54380), A method of adding a pendant group such as glycerol monoallyl ether to the Si-H portion of the silicone polymer (Japanese Patent Publication No. 1-54381) can also be used.

The hydrophobizing agent is not particularly limited, but may be a powder treated with fatty acid dextrin, a powder treated with trimethylsiloxysilicate, a powder treated with fluorine-modified trimethylsiloxysilicate, a powder treated with methylphenylsiloxysilicate, or a fluorine-modified powder. Methylphenylsiloxysilicic acid-treated powder, low-viscosity oily polysiloxane-treated powder such as dimethylpolysiloxane, diphenylpolysiloxane, methylphenylpolysiloxane, etc., gum-like polysiloxane-treated powder, methylhydrogenpolysiloxane-treated powder, fluorine-modified Methyl hydrogen polysiloxane treated powder, methyltrichlorosilane, methyltrialkoxysilane, hexamethyldisilane, dimethyldichlorosilane, dimethyldialkoxysilane, trimethylchlorosilane, trimethyl Alkoxysilane treated powder with an organic silyl compound or their fluorine-substituted body such as, ethyl trichlorosilane, ethyl trialkoxysilane,
Powders treated with organically modified silanes such as propyltrichlorosilane, propyltrialkoxysilane, hexyltrichlorosilane, hexyltrialkoxysilane, long-chain alkyltrichlorosilane, long-chain alkyltriethoxysilane or their fluorine-substituted products, amino-modified polysiloxane treatment Powder, a powder modified with a fluorine-modified polysiloxane, and a powder treated with a fluoroalkylphosphoric acid.

In the present invention, in particular, the surface is hydrophobized by a trimethylsilyl group, the surface is hydrophobized by a silane compound such as octylsilane, the surface is hydrophobized by a silicone oil such as dimethyl silicone, or a lower alkyl group such as --CH _3. Hydrophobized silica obtained by a chemical surface hydrophobizing treatment or a combination thereof is preferred. Preferred examples of such hydrophobic silica include dimethylsilylated silicic anhydride.

The hydrophobized silica used in the present invention preferably has a primary average particle diameter of 1 to 50 nm.
In particular, it is 5 to 20 nm. Further, the specific surface area (by BET method) of the hydrophobized silica is preferably from 10 to 500 m ² / g, particularly preferably from 100 to 300 m ² / g.
Further, the apparent specific gravity of the hydrophobized silica is 20 to 100 g.
/ L, preferably 50 to 90 g / l. By using one having a primary average particle diameter, a specific surface area, and an apparent specific gravity within the above ranges, a small amount of a stable, stable oil component can be more effectively obtained.

Such hydrophobized silica is referred to as “AEROSIL R9
72 '', `` AEROSIL R972V '', `` AEROSIL R972CF '', `` AER
OSIL R974 "," AEROSIL R976 "," AEROSIL R812 ",
It is commercially available as "AEROSIL RX200" (both manufactured by Nippon Aerosil Co., Ltd.) and the like, and is preferably used.

As the hydrophobized silica, one or more kinds can be used.

In the present invention, due to the unique hydrophilic-lipophilic balance of the hydrophobized silica, the powder component is uniformly adsorbed on the surface of the oil phase at the interface with the aqueous phase, and the spherical oil droplets are stably formed. It can be formed and uniformly dispersed in the aqueous phase. Further, the transparency of the interface between the aqueous phase and the oil droplets is extremely excellent.

The hydrophobized silica is preferably blended in a proportion of 0.001 to 20% by weight, more preferably 0.003 to 10% by weight, and particularly preferably 0 to 20% by weight, based on the total amount of the oil component (total oil phase). 0.005 to 5% by weight. By blending the hydrophobized silica in the above-described blending amount, the powder uniformly covers the surface of the oily component, so that oil droplets having an extremely good shape can be formed more stably. If the amount of the powder is too small relative to the total amount of the oily component, the powder cannot completely adhere around the oily component, and it is difficult to obtain a stable spherical shape. on the other hand,
If the amount of the powder is too large relative to the total amount of the oily components, the amount of the powder becomes excessive, and in extreme cases, a phenomenon such as precipitation of the powder is observed.

Various adjustments can be made as desired, such as by freely adjusting the amount of oil droplets or the number of oil droplets from one to a plurality by appropriately adjusting the amount of the oil based on the total amount of the oily components. . Specifically, when the blending amount of the powder is reduced, the size of the generated oil droplet increases, and the number of the oil droplets decreases. On the other hand, if the amount of powder is increased,
The size of the generated oil droplets decreases, and the number of oil droplets increases.

The oily component to be added to the oil phase of the cosmetic composition of the present invention is not particularly limited as long as it can be used in cosmetics, pharmaceuticals, etc., and examples thereof include hydrocarbon oils, higher fatty acids and higher fatty acids. Examples include alcohol, silicone, and ester oil (synthetic and natural).

Examples of the hydrocarbon oil include oils such as liquid paraffin, ozokerite, squalene, pristane, paraffin, ceresin, squalene, petrolatum, and microcrystalline wax. Of these, oils that are not normally liquid can be used after dissolving in liquid oils.
Of these, liquid oils such as liquid paraffin and squalane are particularly preferred.

The higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic (behenic) acid, oleic acid, 12-hydroxystearic acid,
Undecylenic acid, tall acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EP
A) and docosahexaenoic acid (DHA). Of these, oils that are not normally liquid can be used after dissolving in liquid oils.

Examples of the higher alcohol include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, and cetostearyl alcohol; monostearyl glycerin ether (bacyl alcohol), 2-decyltetradecinol, Examples thereof include branched alcohols such as lanolin alcohol, cholesterol, phytosterol, hexyldecanol, isostearyl alcohol, and octyldodecanol. Among them, those which are usually solid can be used after dissolving in liquid oil.

Examples of the silicone include linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane and methylhydrogenpolysiloxane; cyclic polysiloxanes such as decamethylpolysiloxane, dodecamethylpolysiloxane and tetramethyltetrahydrogenpolysiloxane. In addition, a silicone resin and a silicone rubber forming a three-dimensional network structure are exemplified.

Specific examples of synthetic ester oils include isopropyl myristate, cetyl octoate, octyl dodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, and hexyl dimethyloctanoate. Decyl, cetyl lactate, myristyl lactate, lanolin butyrate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, fatty acid ester of dipentaerythritol, N-alkyl glycol monoisostearate, Neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylol tri-2-ethylhexanoate Lopan, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane triisostearate, cetyl-2-ethylhexanoate, 2-ethylhexyl palmitate, Glycerin trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester, oleic oil, cetostearyl alcohol, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid -2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, palmi Phosphate 2-hexyl decyl, 2-hexyldecyl adipate, sebacic acid diisopropyl, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate and the like.

Examples of natural ester oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil,
Castor oil, linseed oil, safflower oil, cottonseed oil, eno oil,
Examples include soybean oil, peanut oil, teaseed oil, kaya oil, rice bran oil, cinnamon oil, jojoba oil, germ oil, triglycerin, glycerin trioctanoate, glycerin triisopalmitate and the like.

One or more oily components can be used.

The total amount of oil components (total oil phase, polar oil,
Contains non-polar oil. In the case of blending a fragrance, the fragrance is preferably 0.1 to 40% by weight, and particularly preferably 1 to 20% by weight, based on the total amount of the cosmetic composition of the present invention. If the amount of the oily component is too small, the spheres of the oily component become too small and do not appear spherical in appearance. On the other hand, if the amount of the oily component is too large, problems such as poor usability such as a slimy feeling due to oil content arise.

The amount of the polar oil such as an ester oil in the total amount of the oil component is preferably less than 10% by weight. In the present invention, if the blending ratio of the polar oil in the oil phase is too high, oil droplets may coalesce and it may be difficult to obtain good spherical oil droplets.

In the aqueous phase of the cosmetic composition of the present invention, a water-miscible organic solvent and the like are appropriately compounded in addition to water, but are not limited thereto. As such a water-miscible organic solvent, for example, a lower alcohol is preferably used. Examples of the lower alcohol include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like. Among them, ethanol is preferably used. If the aqueous phase contains a lower alcohol,
The alcohol content is determined in consideration of the solubility of the oil in the aqueous phase.
It is preferable that the amount is about 5 to 85% by weight based on the total amount of the cosmetic composition. In addition, since the alcohol content affects the position of the spherical oil droplet in the aqueous phase, the alcohol content can be appropriately adjusted to freely adjust the spherical oil droplet to a desired position. For example, if the amount of alcohol is increased and the specific gravity of the aqueous phase is set higher than that of the oil phase, the oil droplets will be located at the upper part of the aqueous phase. If it is lower than that of, the oil droplet will be located below the aqueous phase.

As the water-miscible organic solvent, glycerin, propylene glycol, butylene glycol, ethylene glycol, acetone and the like can be blended in addition to the lower alcohol.

In the cosmetic composition of the present invention, by using the above-mentioned specific powder component, the powder component is adsorbed on the oil phase surface at the interface with the aqueous phase, so that the oil phase component becomes spherical oil droplets. Can be. Therefore, such a spherical oil droplet can be formed stably without substantially containing a surfactant. Further, the transparency of the oil droplet interface is particularly excellent.

The preparation of the cosmetic composition of the present invention can be usually obtained by mixing a powder component and an oil component and then adding the mixture to an aqueous phase, but the present invention is not limited thereto.

The cosmetic composition of the present invention maintains a state in which spherical oil droplets are stably and uniformly dispersed in a transparent aqueous phase when allowed to stand, and when used, the aqueous phase is shaken when shaken. And the oil phase are mixed and uniformly suspended, and a cosmetic having a uniform composition can be used and applied. After use, it is immediately restored to the stationary state.

Further, the cosmetic composition of the present invention may contain various components commonly used in cosmetics as long as the effects of the present invention are not impaired. As these components, for example, a humectant can be preferably added. As a moisturizer,
Polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol,
Examples include sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, lycopodium extract, yarrow extract, and melilot extract.
Particularly preferred among these are polyethylene glycol, propylene glycol, glycerin and 1,3-butylene glycol.

Further, various ultraviolet absorbers, drugs, sugars,
Amino acids, pH adjusters, sequestering agents, antioxidants and the like can also be added.

The cosmetic composition of the present invention is not particularly limited as long as it is used for skin and hair. For example, body lotion, lotion, hair liquid, hair tonic,
Examples include hair lotion, sun oil, after shave lotion, various fragrance products, but are not limited to these uses.

[0048]

EXAMPLES The present invention will be further described below with reference to specific examples, but the present invention is not limited thereto. In addition, the following compounding amounts are shown by weight% unless otherwise specified.

Prior to the examples, evaluation methods and evaluation criteria used in the present example will be described below.

[Transparency of aqueous phase] The transparency of the aqueous phase was visually confirmed. The evaluation criteria are as follows. (Evaluation criteria) ○: Oily component is uniformly present in the aqueous phase, and the aqueous phase is transparent △: Oily component is uniformly present in the aqueous phase, but the aqueous phase is translucent in appearance ×: Oily component Is unevenly present in the aqueous phase, and the aqueous phase is opaque in appearance.

[Formation of Spherical Oil Droplet (Oily Component)] It was visually confirmed whether or not the oily component formed a spherical shape. The evaluation criteria are as follows. (Evaluation criteria) ：: Oily component forms a sphere △: Oily component forms a sphere but is distorted ×: Oily component does not form a sphere

[Transparency of interface between aqueous phase and spherical oil droplets (oil-based component)] The transparency of the interface between the aqueous phase and spherical oil droplets (oil-based component) was visually confirmed. The evaluation criteria are as follows. (Evaluation criteria) ○: The interface between the aqueous phase and the spherical oil droplet (oil-based component) is transparent △: The interface between the aqueous phase and the spherical oil droplet (oil-based component) is not white but not transparent ×: The water phase and the spherical The interface of oil droplets (oil-based components) is white

[Size of Oil Droplet (Spherical Body of Oily Component)] The diameter of the sphere of the oily component was measured with a ruler.

(Test Examples 1 to 7) Cosmetic compositions having the compositions shown in Table 1 below were prepared, and the aqueous compositions were used in accordance with the evaluation criteria described above to determine the transparency of the aqueous phase, the formation of spherical oil droplets, the aqueous phase and the spherical form. The transparency of the interface of the oil droplet (oil component) was evaluated, and the size of the oil droplet was measured. Table 1 shows the results. In Table 1,
"AEROSIL R972 ^(*) " is hydrophobized silica (hydrophobized chemically by covering the silica surface with CH ₃ groups. The primary average particle diameter is about 16
nm, specific surface area 90-130 m ² / g, apparent specific gravity about 5
0 g / l), and "AEROSIL 200 ^(**) " is hydrophilic silica which has not been hydrophobized (primary average particle diameter: about 12 nm, specific surface area: 175 to 225 m ² / g, apparent specific gravity: about 50 g / l)
It is. Also, "UV TITAN M212 ^(***) " (manufactured by KEMIRA)
Is particulate titanium dioxide.

[0055]

[Table 1]

<Preparation Method> (Test Examples 1 to 3) One of (3), (4) and (5) to (7) was uniformly mixed and added to (1). Next, (9) was added thereto and mixed.

Test Examples 4 to 7 Any one of (3), (4) and (5) to (8) was uniformly mixed and added to (2). Next, (9) was added thereto and mixed.

As is clear from the results in Table 1, Test Example 1
As shown in and 4, when the powder is hydrophobized silica,
Although the interface between the aqueous phase and the oily component was transparent and spherical oil droplets were formed, the shape of the oil droplets was slightly distorted in Test Example 4 in which the polar oil was slightly mixed in the oil phase. However, it was not enough to cause a practical problem.

On the other hand, as shown in Test Examples 2 and 5, when the powder was hydrophilic silica, spherical oil droplets were not formed.
The interface between the aqueous phase and the oily component was not transparent.

As shown in Test Examples 3 and 6, when ethylcellulose powder was used as the powder, when liquid paraffin was used as the oil component (Test Example 3), the aqueous phase and the interface between the aqueous phase and the oily component were used. Was transparent and irregularly shaped spherical oil droplets were formed. However, when cetyl octoate, which is a polar oil, was used as the oil component (Test Example 6), the interface between the aqueous phase and the oily component was transparent. However, no spherical oil droplets were formed.

In the case of Test Example 7 in which fine powder of titanium dioxide was used as the powder, spherical oil droplets were formed, but the interface between the aqueous phase and the oily component became white, and a sphere of the oily component transparent in appearance could be obtained. could not.

(Test Examples 8 to 13) Cosmetic compositions having the compositions shown in Table 2 below were prepared, and using these, the transparency of the aqueous phase, the formation of spherical oil droplets, the aqueous phase and the spherical The transparency of the interface of the oil droplet (oil component) was evaluated, and the size of the oil droplet was measured. Table 2 shows the results. In Table 2,
"AEROSIL R812 ^(****) " is hydrophobized silica (silica surface is hydrophobized with trimethylsilyl group. The primary average particle size is about 7nm,
Specific surface area 230-290 m ² / g, apparent specific gravity about 50 g
/ L).

[0063]

[Table 2]

<Preparation Method> (Test Example 8) (2) and (3) were uniformly mixed and added to (1). Next, (6) was added thereto and mixed.

(Test Examples 9 to 12) (2) to (4) were uniformly mixed and added to (1). Next, (6) was added thereto and mixed.

(Test Example 13) After heating and dissolving (5), the mixture was uniformly mixed with (3), and (1) and (2) were added thereto and mixed. Next, (6) was added thereto and mixed.

As is clear from the results in Table 2, Test Example 8
As shown in Table 2, when the powder component was not blended, the aqueous phase was cloudy and spherical oil droplets were formed, but the shape was distorted and the appearance was not beautiful.

On the other hand, Test Examples 9 to 9 in which hydrophobized silica was blended
In No. 12, it was found that when the ratio of the amount of powder to the oily component was increased, the size of the sphere of the oily component was reduced.

In Test Example 13 in which hydrogenated castor oil as a surfactant was blended instead of the powder, the oil globules observed in Test Example 8 were not observed, and the whole became cloudy.

The formula of the cosmetic composition of the present invention is shown below.

(Example 1) Body lotion Compounding component Compounding amount (% by weight) (1) Ethanol 65.0 (2) Fragrance 2.0 (3) “AEROSIL R972CF” (manufactured by Nippon Aerosil Co., Ltd.) 0 0.01 (4) liquid paraffin 3.0 (5) glyceryl tri-2-ethylhexanoate 0.5 (6) 1,3-butylene glycol 1.0 (7) ion-exchanged water residue (8) sodium chloride 05 (9) Blue No. 1 suitable amount (Production method) (2) was dissolved in (1), and (3) was dispersed therein.
Here, (4) and (5) are added and mixed.
(7) in which (6), (8) and (9) were dissolved and mixed was added and mixed to obtain a body lotion. (Evaluation) Using this body lotion, the transparency of the aqueous phase, the formation of spherical oil droplets, and the transparency of the interface between the aqueous phase and the spherical oil droplets (oil-based components) were evaluated in accordance with the above evaluation criteria. Was measured. As a result, the transparency of the aqueous phase: 、, the formation of spherical oil droplets: 、, the transparency of the interface between the aqueous phase and the spherical oil droplets (oil component):
、, oil droplet size: 5 mm or less. In addition, it was excellent in usability (no stickiness).

(Example 2) Fragrance compounding component Compounding amount (% by weight) (1) Ethanol 70.0 (2) Fragrance 4.0 (3) “AEROSIL R972CF” (manufactured by Nippon Aerosil Co., Ltd.) 01 (4) Squalane 1.0 (5) Cetyl octoate 0.5 (6) Methylphenylpolysiloxane 1.0 (7) Glycerin 2.0 (8) Ion-exchanged water residue (9) Western yarrow extract suitable Amount (10) Red No. 227 Appropriate amount (Production method) (2) was dissolved in (1), and (3) was dispersed therein.
Here, (4) and (5) are mixed, and (6), (7),
(8) obtained by dissolving and mixing (9) was added and mixed to obtain a fragrance. (Evaluation) Using this fragrance, the transparency of the aqueous phase, the formation of spherical oil droplets, and the transparency of the interface between the aqueous phase and the spherical oil droplets (oil-based components) were evaluated in accordance with the above evaluation criteria. Was measured. As a result, the transparency of the aqueous phase: 、, the formation of spherical oil droplets: 、, the transparency of the interface between the aqueous phase and the spherical oil droplets (oil component): 、, the size of the oil droplets: 5 mm or less. Also,
It had excellent usability (no stickiness).

(Example 3) Transparent lotion Combination component Content (% by weight) (1) Ethanol 20.0 (2) Fragrance 0.01 (3) "AEROSIL R972" (manufactured by Nippon Aerosil Co., Ltd.) 0.005 (4) Squalane 2.0 (5) Pentaerythritol tetra-2-ethylhexanoate 0.2 (6) Dipropylene glycol 1.0 (7) Glycerin 1.0 (8) Deionized water residue (9) ) Magnesium sulfate 0.1 (Production method) (2) was dissolved in (1), and (3) was dispersed therein.
Here, (4) and (5) are mixed, and (6), (7),
(8) obtained by dissolving and mixing (9) was added and mixed to obtain a clear lotion. (Evaluation) Using this clear lotion, the transparency of the aqueous phase, the formation of spherical oil droplets, and the transparency of the interface between the aqueous phase and the spherical oil droplets (oil-based components) were evaluated in accordance with the above evaluation criteria. The size was measured. As a result, the transparency of the aqueous phase: 、, the formation of spherical oil droplets: 、, the transparency of the interface between the aqueous phase and the spherical oil droplets (oil component): 、, the size of the oil droplets: 10 mm or less. In addition, it was excellent in usability (no stickiness).

(Example 4) After-shave lotion Compounding component Compounding amount (% by weight) (1) Ethanol 35.0 (2) Fragrance 0.02 (3) “AEROSIL R976” (manufactured by Nippon Aerosil Co., Ltd.) 0 .1 (4) α-olefin oligomer 1.0 (5) liquid paraffin 0.2 (6) dipropylene glycol 1.0 (7) glycerin 2.0 (8) ion-exchanged water residue (9) melilot extract Appropriate amount (Production method) (2) was dissolved in (1), and (3) was dispersed therein.
Here, (4) and (5) are mixed, and (6), (7),
(8) obtained by dissolving and mixing (9) was added and mixed to obtain an aftershave lotion. (Evaluation) Using this after-shave lotion, the transparency of the aqueous phase, the formation of spherical oil droplets, and the transparency of the interface between the aqueous phase and the spherical oil droplets (oil-based components) were evaluated in accordance with the above evaluation criteria. Was measured. As a result, the transparency of the aqueous phase: 、, the formation of spherical oil droplets: 、, the transparency of the interface between the aqueous phase and the spherical oil droplets (oil component): 、, the size of the oil droplets: 3 mm or less. In addition, it was excellent in usability (no stickiness).

Example 5 Hair Tonic Combination Component Blending Amount (% by Weight) (1) Ethanol 80.0 (2) Fragrance 0.02 (3) “AEROSIL R972CF” (Nippon Aerosil Co., Ltd.) 0 0.001 (4) Squalane 1.0 (5) Ion-exchanged water residue (Production method) (2) was dissolved in (1), and (3) was dispersed therein.
Here, (4) was mixed, and (5) was added and mixed to obtain a hair tonic. (Evaluation) Using this hair tonic, the transparency of the aqueous phase, the formation of spherical oil droplets, and the transparency of the interface between the aqueous phase and the spherical oil droplets (oil-based components) were evaluated in accordance with the above evaluation criteria. Was measured. As a result, the transparency of the aqueous phase: 、, the formation of spherical oil droplets: 、, the transparency of the interface between the aqueous phase and the spherical oil droplets (oil component): 、, the size of the oil droplets: 10 mm or less. In addition, it was excellent in usability (no stickiness).

[0076]

As described above in detail, according to the present invention, the aqueous phase is transparent in appearance, the oily component is stably dispersed and blended in a spherical shape, and the interface of the spherical oil droplets is transparent and sticky. There is provided a cosmetic composition having a good feeling of use without feeling, and after use, in which the oily component is stably dispersed in a spherical form with good reproducibility.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A61K 7/46 A61K 7/46 A F-term (Reference) 4C083 AA112 AB051 AB172 AB332 AB362 AC022 AC101 AC102 AC122 AC352 AC392 AC422 AC792 AD022 AD042 AD152 BB13 BB25 BB26 CC01 CC04 CC21 CC37 DD01 DD39 EE01 EE07

Claims (7)

[Claims] 1. A cosmetic composition comprising an aqueous phase, an oil phase, and a powder component, wherein the oil phase exhibits a spherical shape and is dispersed in the aqueous phase.
A cosmetic composition characterized by using hydrophobized silica as the powder component. 2. The hydrophobized silica having a primary average particle diameter of 1
５０50 nm, specific surface area (BET method) 10５００500 m ²
/ G. 3. The hydrophobic silica has an apparent specific gravity of 20 to 3.
The cosmetic composition according to claim 1, which is 100 g / l. 4. The method according to claim 1, wherein the hydrophobized silica is blended in a ratio of 0.001 to 20% by weight based on the total amount of the oil phase.
4. The cosmetic composition according to any one of items 3 to 3. 5. The composition according to claim 1, wherein the total amount of the oil phase is 0.1 to 40% by weight based on the total amount of the cosmetic composition.
The cosmetic composition according to Item. 6. The cosmetic composition according to claim 1, wherein the aqueous phase contains a lower alcohol. 7. The cosmetic composition according to claim 1, which is substantially free of a surfactant.