JP2022178561A - Oil-in-water cosmetic - Google Patents

Abstract

To provide a cosmetic that gives a good flavor and also has high stability, the cosmetic containing an oil-based capsule.SOLUTION: An oil-in-water cosmetic contains (A) an oil-based capsule containing (A1) solid oil and (A2) liquid oil with an average particle size of 100 μm or more and (B) a flavor complex containing (B1) a surfactant with an HLB of 8.5 or more and (B2) a flavor.SELECTED DRAWING: None

Description

The present invention relates to an oil-in-water cosmetic. More particularly, it relates to an oil-in-water cosmetic comprising oily capsules of visible size.

An oil-in-water emulsified cosmetic is known in which large oily particles having an average particle size of 50 μm to 10 mm are dispersed in an aqueous phase. Cosmetics containing such large oily particles are not only visually novel and beautiful because the oily particles are dispersed in a size that can be seen with the naked eye, but also give a fresh and refreshing feeling when applied to the skin. There is a feeling of use that was not possible in the past, such as a moist feeling after a while. It also has the effect that if degradable oil-soluble components are retained in large oily particles, decomposition of the oil-soluble components can be suppressed.
For example, Patent Document 1 discloses a capsule-containing cosmetic in which oily capsules having an average particle size of 100 μm or more containing an oily component that is solid at room temperature are dispersed in an aqueous medium.

Conventionally, microcapsules encapsulating fragrances have been widely used in laundry detergents and deodorants, and are expected to have effects such as sustained release of pleasant fragrances. As for cosmetics, users' demand for fragrance is increasing, and a technique for encapsulating fragrance in microcapsules has been developed.
Cosmetics containing the large oily capsules described above are required to have good fragrance.

JP 2006-104131 A

It has been found that it is difficult to achieve good fragrance release when a perfume is included in the capsules for the purpose of achieving good fragrance release in cosmetics containing the above oily capsules. In addition, it has been found that it is difficult to achieve a similarly good fragrance by simply blending a fragrance outside the capsule without encapsulating it.
Under such circumstances, the present inventors have surprisingly found that, apart from the oil-based capsule, a fragrance complex comprising a specific surfactant and a fragrance is formed and blended outside the capsule to produce a fragrance. The present inventors have found that it is possible to provide a cosmetic that is excellent in standability and stability. The present invention is based on these findings.

Accordingly, the present invention discloses a cosmetic comprising an oily capsule and a perfume complex.

According to the present invention, the following inventions are provided.
[1] (A) oily capsules having an average particle size of 100 μm or more, comprising (A1) solid oil and (A2) liquid oil;
(B) An oil-in-water cosmetic comprising (B1) a surfactant having an HLB of 8.5 or more and (B2) a fragrance complex comprising a fragrance.
[2] The cosmetic according to [1], wherein the amount of (B1) surfactant is 0.01 to 0.45% by mass relative to the total amount of the cosmetic.
[3] The cosmetic according to [1] or [2], wherein the amount of (B2) perfume is 0.001 to 0.5% by mass relative to the total amount of the cosmetic.
[4] The cosmetic according to any one of [1] to [3], wherein the weight ratio of (B1) surfactant to (B2) perfume is 1:0.02 to 1:0.4. .
[5] The cosmetic according to any one of [1] to [4], wherein (B1) surfactant forms solubilized micelles encapsulating (B2) perfume.
[6] The cosmetic according to any one of [1] to [5], wherein the perfume complex has an average particle size of 500 nm or less.
[7] (B1) The cosmetic according to any one of [1] to [6], wherein the surfactant is a nonionic surfactant.
[8] (B1) Surfactant is polyether-modified silicone, POE-sorbitan fatty acid ester, POE sorbit fatty acid ester, POE-glycerin fatty acid ester, POE-fatty acid ester, POE-alkyl ether, Pluronic, POE/POP-alkyl ethers, tetraPOE/tetraPOP-ethylenediamine condensates, POE-castor oil hydrogenated castor oil derivatives, POE-beeswax/lanolin derivatives, POE-propylene glycol fatty acid esters, alkylene oxide/ethylene oxide-dimer diol ethers, POE-alkylamines, and The cosmetic according to any one of [1] to [7], which is selected from the group consisting of POE-fatty acid amides.
[9] A method for producing an oil-in-water cosmetic according to any one of [1] to [8], comprising the following steps:
(A1) solid oil content and (A2) liquid oil content adjusted to a temperature exceeding the melting point and liquefied are introduced into an aqueous solvent adjusted to a temperature exceeding the melting point under stirring at 10 to 1500 rpm to form a mixture, A step of cooling the mixture to room temperature under the stirring to form (A) oily capsules having an average particle size of 100 μm or more;
(B1) a surfactant having an HLB of 8.5 or higher and (B2) a perfume dissolved in a lower alcohol or polyhydric alcohol, introduced into an aqueous solvent and stirred to form (B) a perfume complex; and A method comprising mixing (A) an oily capsule and (B) a perfume complex.

ADVANTAGE OF THE INVENTION According to this invention, the cosmetics which are excellent in fragrance release, and are excellent in stability, and contain an oily capsule can be provided.

Specific description of the invention

[Cosmetics]
The present invention provides (A) an oily capsule having an average particle size of 100 μm or more comprising (A1) a solid oil and (A2) a liquid oil, (B) (B1) a surfactant having an HLB of 8.5 or more, and (B2) The present invention relates to an oil-in-water cosmetic comprising a fragrance complex comprising a fragrance.

(A) Oil-based capsule The oil-in-water cosmetic (hereinafter sometimes referred to as cosmetic) according to the present invention comprises (A1) a solid oil and (A2) a liquid oil having an average particle size of 100 μm or more. It comprises a capsule (hereinafter sometimes referred to as an oily capsule or component (A). The same applies to other components).
The oil-based capsule according to the present invention is considered to have an (outer layer) capsule structure in which the inner layer containing the (A2) component is coated with the (A1) component. In addition, the crystallization of the solid oil that forms the outer layer provides an appropriate degree of hardness and a unique feel during use.
The average particle size of the oily capsule is 100 μm or more, preferably 100 μm to 1.5 mm, more preferably 100 μm to 1 mm. The particle size of the oily capsules can be measured using a microscope.
(A) The blending amount of the oily capsules is preferably 0.5 to 10% by mass, more preferably 1 to 5% by mass, based on the total amount of the cosmetic.

(A1) Solid oil content (A) The oily capsule contains (A1) solid oil content. In the present invention, "solid oil" means oil that is solid or semi-solid at room temperature (25°C).
(A1) Solid oils include, for example, solid paraffin, microcrystalline wax, ceresin, beeswax, varicowax, polyethylene wax, silicone wax, higher alcohols (e.g., behenyl alcohol, stearyl alcohol, cetyl alcohol, etc.), batyl alcohol, and carnauba wax. , beeswax, candelilla wax, jojoba wax, lanolin, shellac wax, whale wax, Japanese wax, higher fatty acids (e.g., myristic acid, palmitic acid, stearic acid, behenic acid, 12-hydroxystearic acid, etc.), ester oils (e.g., myristic acid) myristyl, etc.), cacao butter, hydrogenated castor oil, hydrogenated oil, hydrogenated palm oil, palm oil, hydrogenated coconut oil, polyethylene, vaseline, various hydrogenated animal and vegetable oils, fatty acid monocarboxylic acid lanolin alcohol ester, and the like.
(A1) The melting point of the solid oil is preferably 50° C. or higher, more preferably 55° C. or higher, and even more preferably 65° C. or higher, from the viewpoint of stability at high temperatures. From the viewpoint of particle formability and dispersibility, the melting point is preferably 85° C. or lower. More preferred (A1) solid oils include hydrogenated jojoba oil (melting point: 68°C), glyceryl eicosanedioate behenate (melting point: 66°C), stearyl alcohol (melting point: 52-62°C) and behenyl alcohol (melting point: 68°C). ° C.) and other higher alcohols having 16 or more carbon atoms, preferably 18 or more carbon atoms, microcrystalline wax (melting point: 80°C), ceresin (melting point: 68-75°C), polyethylene wax (melting point: 80°C), batyl alcohol (melting point: 70°C), carnauba wax (melting point: 83°C), candelilla wax (melting point: 71°C), hydrogenated castor oil (melting point: 84°C), stearic acid (melting point: 58-63°C), behenic acid (melting point: 58-63°C) : 69-80°C), 12-hydroxystearic acid (melting point: 70°C), and the like.

(A1) component can be blended 1 type, or 2 or more types. The amount of component (A1) in the composition of the present invention is preferably 5 to 50% by mass, more preferably 10 to 20% by mass, based on the total amount of component (A). Within this range, the stability of the oil-based capsule can be improved, and the oil-based capsule can have appropriate hardness, and usability such as compatibility with the skin can be improved.

(A2) Liquid oil The (A) oily capsule contains (A2) liquid oil. In the present invention, "liquid oil" means oil that is liquid at room temperature (25°C).
(A2) As the liquid oil, for example,
Flaxseed oil, camellia oil, macadamia nut oil, corn oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, mustard oil, cinnamon oil, jojoba oil, grape oil, almond oil, rapeseed oil, sesame oil, sunflower oil, Wheat germ oil, rice germ oil, rice bran oil, cottonseed oil, soybean oil, peanut oil, tea seed oil, evening primrose oil, triglycerin, glyceryl trioctanoate, glyceryl triisopalmitate, coconut oil, palm oil, palm kernel oil, etc. fats and oils octanoate such as cetyl octanoate, isooctanoate such as glyceryl tri-2-ethylhexaenoate, pentaerythrityl tetraethylhexanoate, laurate such as hexyl laurate, isopropyl myristate, octyldodecyl myristate Myristate esters such as octyl palmitate, palmitate esters such as octyl palmitate, stearate esters such as isocetyl stearate, isostearate esters such as isopropyl isostearate, isopalmitates such as octyl isopalmitate, oleins such as isodecyl oleate Acid esters, adipic diesters such as diisopropyl adipate, sebacate diesters such as diethyl sebacate, ester oils such as diisostearyl malate such as diisostearyl malate,
Hydrocarbon oils such as liquid paraffin, ozokerite, squalane, squalene, pristane, paraffin, isoparaffin, petrolatum, etc.
Chain silicones such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane (phenylmethicone), methylhydrogenpolysiloxane, cyclic silicones such as decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane, amino-modified silicone oils, polyethers Modified silicone oils, carboxy-modified silicone oils, alkyl-modified silicone oils, ammonium salt-modified silicone oils, and silicone oils containing modified silicones such as fluorine-modified silicone oils can be used.
Among these, polar oils such as glyceryl tri-2-ethylhexaenoate and pentaerythrityl tetraethylhexanoate are preferable because they are compatible with the skin due to the presence of oily capsules and can impart a moist feeling. In addition, silicone oil is preferable because the presence of the oily capsules allows it to blend well with the skin and impart a moist and smooth feel.

(A2) component can be blended 1 type, or 2 or more types. The amount of component (A2) in the composition of the present invention is preferably 50 to 95% by mass, more preferably 60 to 90% by mass, based on the total amount of component (A). Within this range, the stability of the oil-based capsule can be improved, and the oil-based capsule can have appropriate hardness, and usability such as compatibility with the skin can be improved.

(A) The oil-based capsule may contain other ingredients in addition to the essential ingredients (A1) and (A2) within a range that does not impair the effects of the present invention. Other ingredients that can be blended into the oily capsules include, for example, oil-soluble thickeners, moisturizers, oil-soluble drugs (e.g., oil-soluble vitamins, oil-soluble plant extracts, etc.), ultraviolet absorbers, chelating agents, and pH adjusters. Formulations, preservatives, pigments, dyes, surfactants, powder components, and the like.

(B) Fragrance Complex The cosmetic according to the present invention comprises a fragrance complex comprising (B1) a surfactant having an HLB of 8.5 or more and (B2) a fragrance. (B1) Surfactant preferably forms solubilizing micelles encapsulating (B2) perfume.
The mass ratio of (B1) surfactant to (B2) perfume is preferably 1:0.02 to 1:0.4, more preferably 1:0.05 to 1:0.2. be.
The average particle size of the perfume complex is preferably 500 nm or less, more preferably 1 to 200 nm. The average particle size of the perfume complex can be optically measured by a dynamic light scattering method or the like, assuming that the shape of the complex is spherical.

(B1) Surfactant with HLB of 8.5 or higher (B) The oily capsule contains (B1) a surfactant with HLB of 8.5 or higher.
The HLB (hydrophile-lipophile balance) value is preferably 8.5-19. In the present invention, the HLB value is preferably calculated by the Davis method.
(B1) Component is preferably a nonionic surfactant.

(B1) Surfactants are preferably polyether-modified silicones (eg, PEG/PPG-30/10 dimethicone), POE-sorbitan fatty acid esters (eg, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.), POE sorbit fatty acid esters (e.g., POE-sorbit monolaurate, POE-sorbit monooleate, POE-sorbit pentaoleate, POE-sorbit monostearate etc.), POE-glycerin fatty acid esters (for example, POE-monooleates such as POE-glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate), POE-fatty acid esters (for example, POE-distearate , POE-monodioleate, ethylene glycol distearate, etc.), POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-chole stanol ether, etc.), Pluronic, POE POP-alkyl ether (e.g., POE POP-cetyl ether, POE POP-2-decyltetradecyl ether, POE POP-monobutyl ether, POE POP-hydrogenated lanolin, POE・POP-glycerin ether, etc.), tetra-POE, tetra-POP-ethylenediamine condensate (e.g., Tetronic, etc.), POE-castor oil hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE - hydrogenated castor oil monoisostearate, POE - hydrogenated castor oil triisostearate, POE - hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE - hydrogenated castor oil maleic acid, etc.), POE - beeswax lanolin derivatives (e.g. , POE-sorbitol beeswax, etc.), POE-propylene glycol fatty acid ester, alkylene oxide/ethylene oxide-dimer diol ether (e.g., PEG/polybutylene glycol-44/15 methyl ether hydrogenated dimer dilinoleyl), POE-alkylamine, and POE-fatty acid amides. Component (B1) is more preferably selected from the group consisting of polyether-modified silicones, POE-glycerin fatty acid esters, POE-POP-alkyl ethers, POE-castor oil hydrogenated castor oil derivatives, and alkylene oxide/ethylene oxide-dimer diol ethers. selected.

(B1) component can be blended 1 type, or 2 or more types. The blending amount of component (B1) is preferably 0.01 to 0.45% by mass, more preferably 0.05 to 0.4% by mass, based on the total amount of the cosmetic. Within this range, stable oily capsules can be formed and stickiness after application can be suppressed.

(B2) Perfume (B) The oily capsule contains (B2) a perfume. (B2) The fragrance is not particularly limited, and may be a natural fragrance or a synthetic fragrance.

Natural fragrances are fragrances mainly composed of plant- or animal-derived components, and examples thereof include rose oil, jasmine oil, neroli oil, lavender oil, ylang-ylang oil, tuberose oil, clary sage oil, clove oil, peppermint oil, and geranium. Oil, patchouli oil, sandalwood oil, cinnamon oil, coriander oil, nutmeg oil, pepper oil, lemon oil, orange oil, bergamot oil, opoponax oil, vetiver oil, orris oil, oakmoss oil and other plant-derived natural fragrances, musk. Animal-derived natural flavors such as oil, civet oil, castoreum oil, ambergris oil, and the like are included.
Synthetic fragrances are sometimes classified into hydrocarbons, alcohols, aldehydes, ketones, esters, lactones, phenols, acetals, etc. in terms of their chemical structure or scent-producing groups. Specific examples include limonene, β-caryophyllene (above, hydrocarbons), cis-3-hexenol, linalool, farnesol, β-phenylethyl alcohol, geraniol, citronellol, terpineol, menthol, santalol, bagdanol, brahmanol (above , alcohols), 2,6-nonadienal, citral, α-hexylcinnamic aldehyde, l-carvone, cyclopentadecanone, lyral, lyrial (above, aldehydes), β-ionone, damascone, methylionone, iron, iso e-super, acetylcedrene, muscone (above, ketones), linalyl acetate, benzyl benzoate, benzyl acetate, methyldihydroxyjasmonate, methyljasmonate (above, esters), γ-undecalactone, jasmine lactone, Cyclopentadecanolide, ethylene brassylate (all lactones), eugenol (phenols), phenylacetaldehyde dimethylacetal (acetals), rose oxide, indole, aurantiol and the like.

(B2) component can be blended 1 type(s) or 2 or more types. The blending amount of component (B2) is preferably 0.001 to 0.5% by mass, more preferably 0.001 to 0.2% by mass, based on the total amount of the cosmetic.

The cosmetic composition according to the present invention may contain other components other than components (A) and (B) as long as they do not impair the effects of the present invention, and may contain ingredients commonly used in cosmetics. These ingredients include, for example, water-soluble thickeners, oil-soluble thickeners, moisturizing agents, water-soluble agents (eg, arbutin, ascorbic acid glucoside, tranexamic acid, 4-methoxysalicylate, etc.), ultraviolet absorbers, Chelating agents, pH adjusters, preservatives, pigments, dyes, surfactants, powder components, and the like.

Among the above components, it is preferable to add a water-soluble thickener in order to further improve the stability of the dispersion. Examples of water-soluble thickeners include plant-based polymers such as gum arabic, tragacanth gum, galactan, carob gum, guar gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algae colloid (brown algae extract), dextran, Microbial polymers such as succinoglucan, pullulan and xanthan gum; animal polymers such as collagen, casein, albumin and gelatin; methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose , cellulose-based polymers such as sodium carboxymethylcellulose, crystalline cellulose, and cellulose powder, alginic acid-based polymers such as sodium alginate and propylene glycol alginate, polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, alkyl-modified carboxyvinyl polymer Vinyl polymers such as, polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide, polyethyleneimine, cationic polymers, Inorganic water-soluble polymers such as bentonite, magnesium aluminum silicate, laponite, hectorite, and silicic anhydride can be used.

Among these water-soluble thickeners, the alkyl-modified carboxyvinyl polymer is particularly suitable as a water-soluble thickener because it has surface activity and also has the effect of preventing the aggregation and coalescence of large particles. can be selected. The alkyl-modified carboxyvinyl polymer is also called an alkyl acrylate methacrylate copolymer, preferably an (acrylates/alkyl (C10-30) acrylate) crosspolymer. (Acrylates/alkyl acrylate (C10-C30)) crosspolymers may be commercially available products such as "CARBOPOL 1342", "Pemulen TR-1 Polymeric Emulsifier", "Pemulen TR-2 Polymeric Emulsifier" (Lubrizol Advanced Materials, Inc.) can be mentioned.

The cosmetic according to the present invention is suitable for use as a cosmetic base having a unique appearance and feel. Examples of cosmetics using the base include aqueous cosmetics, gel cosmetics, emulsified cosmetics, and the like. Specifically, it can be used as a facial, body or hair cosmetic such as lotion, gel, milky lotion, cream or pack.

[Method for producing cosmetics]
The method for producing a cosmetic according to the present invention comprises the following steps:
(A1) solid oil content and (A2) liquid oil content adjusted to a temperature exceeding the melting point and liquefied are introduced into an aqueous solvent adjusted to a temperature exceeding the melting point under stirring at 10 to 1500 rpm to form a mixture, Under the stirring, the mixture is cooled to room temperature to form (A) oily capsules having an average particle size of 100 μm or more (hereinafter sometimes referred to as an oily capsule forming step);
(B1) A surfactant having an HLB of 8.5 or higher and (B2) a perfume are dissolved in a lower alcohol or polyhydric alcohol, introduced into an aqueous solvent, stirred, and (B) a step of forming a perfume complex (hereinafter , sometimes referred to as a fragrance complex forming step); and a step of mixing (A) an oily capsule and (B) a fragrance complex (hereinafter sometimes referred to as a mixing step)
comprising
Each step will be described in detail below.

Oil Capsule Forming Step Components (A1) and (A2) are each adjusted to a temperature exceeding the melting point to be liquefied. They are introduced under stirring into an aqueous solvent adjusted to substantially the same temperature. Stirring can be performed at a relatively low speed, specifically 10 to 1500 rpm (preferably 20 to 300 rpm), using a propeller or paddle mixer. Introduction into the aqueous solvent can be carried out, for example, by using an injection means such as a liquid feed pump, preferably by direct injection from the bottom of the aqueous solvent. If this injection is carried out from above, the oily component immediately floats and separates, making it difficult to form particles with a uniform particle size.
By thus introducing the above components into the aqueous solvent under stirring, liquid particles can be formed in the aqueous solvent.
Next, the mixture of the aqueous solvent and the above components is further cooled to room temperature while stirring, whereby the solid oil having a temperature below the melting point is deposited on the particle surfaces. As a result, oily capsules having an average particle size of 100 μm or more are formed in the aqueous solvent.

Perfume Complex Forming Step Components (B1) and (B2) are dissolved in a lower alcohol or polyhydric alcohol. The solution is introduced into an aqueous solvent and stirred. Stirring conditions are not particularly limited, but the mixture is generally stirred and mixed until the mixture becomes visually transparent. At this time, the stirring speed is preferably 100 to 300 rpm. This forms (B) a perfume complex.
The order of the oily capsule forming step and the fragrance complex forming step is not particularly limited.

Mixing Step (A) oily capsules and (B) perfume complex are mixed. The oil-based capsule and the perfume complex are generally uniformly dispersed or dissolved in a medium, but it is also a preferred form that they are mixed while being contained in an aqueous solvent. The mixing order of these is not particularly limited. In addition, the temperature during mixing is a temperature at which the oily capsule and the perfume complex do not decompose, generally (A1) a temperature lower than the melting point of the solid oil, such as room temperature. In addition, the stirring conditions during mixing are not particularly limited, but mixing is preferably performed under conditions that do not break the oily capsules.

The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the blending amount is expressed in % by mass with respect to the total amount.

[Example 1]
A cosmetic of Example 1 was prepared with the formulation shown in Table 1.
Specifically, first, the aqueous solvent is heated to 70°C and stirred at 250 rpm using a propeller mixer. /min into the aqueous solvent phase from the bottom of the same phase. After the injection was completed, the stirring speed was reduced to 150 rpm, and after cooling to room temperature, potassium hydroxide was added to form a composition containing oily capsules.
Next, components (B1) and (B2) were dissolved in ethanol, introduced into an aqueous solvent, and stirred at 200 rpm to form a composition containing a perfume complex.
After that, the composition containing the oily capsules and the composition containing the perfume complex were mixed to obtain the cosmetic of Example 1.

[Examples 2 to 7 and Comparative Example 2]
The cosmetics of Examples 2 to 7 and Comparative Example 2 were prepared in the same manner as in Example 1 with the formulations shown in Table 1.
[Comparative Example 1]
The cosmetic of Comparative Example 1 was prepared in the same manner as in Example 1, except that (B2) was added to components (A1) and (A2) in the formulation shown in Table 1 to form an oily capsule. . In Comparative Example 1, the perfume is present in an oily capsule.
[Comparative Example 3]
Comparative Example 3 is the formulation shown in Table 1, in which (B2) was added to components (A1) and (A2) to form an oily capsule, and then only component (B1) was introduced into the aqueous solvent. Except that, it was prepared in the same manner as in Example 1. In Comparative Example 3, the perfume is present inside the oily capsule, the (B1) surfactant is present outside the capsule, and no perfume complex is formed.

[Particle size of oily capsule]
3 g of the cosmetic prepared above was spread on a petri dish of 55 mm diameter, an image was taken with a digital camera together with the scale from the top, the particle diameters of 50 representative particles were read from the scale, and the average value was calculated. All the obtained oily capsules had an average particle size of 100 μm to 1.0 mm.

[Particle size of perfume complex]
A sample was obtained by diluting the cosmetic prepared above to 1/10 with deionized water. These samples were observed using "Zetasizer NANO-ZS" (manufactured by Sysmex Corporation) to measure the particle size. All the obtained perfume complexes had an average particle size of 50 nm or less.

[Fragrance evaluation]
A certain amount of each of the cosmetics of Examples and Comparative Examples was applied to the skin, and the strength of fragrance immediately after application was evaluated according to the following criteria. The results obtained are shown in Table 1.
A: Strong B: Weak

[Stability evaluation]
After the cosmetics of Examples and Comparative Examples were stored at 25° C. and 40° C. for one month, the state of the oily capsules was observed. Evaluation criteria are as follows. The results obtained are shown in Table 1.
A: No change in the state of the oily capsules was observed under any storage conditions. B: Less than 20% of the oily capsules aggregated and deformed only when stored at 40°C. C: When stored at 40°C. Only 20% or more of the oil-based capsules aggregated and deformed.

From the results in Table 1, it was found that the cosmetic containing the oily capsule and the perfume complex containing a specific surfactant and perfume had good fragrance release and excellent stability.

Claims (9)

(A) an oily capsule having an average particle size of 100 µm or more, comprising (A1) a solid oil and (A2) a liquid oil;
(B) An oil-in-water cosmetic comprising (B1) a surfactant having an HLB of 8.5 or more and (B2) a fragrance complex comprising a fragrance. 2. The cosmetic according to claim 1, wherein the amount of (B1) surfactant blended is 0.01 to 0.45% by mass relative to the total amount of the cosmetic. 3. The cosmetic according to claim 1, wherein the amount of the (B2) perfume compounded is 0.001 to 0.5% by mass relative to the total amount of the cosmetic. 4. The cosmetic according to any one of claims 1 to 3, wherein the mass ratio of (B1) the surfactant and (B2) the perfume is 1:0.02 to 1:0.4. 5. The cosmetic according to any one of claims 1 to 4, wherein the surfactant (B1) forms a solubilized micelle encapsulating the perfume (B2). The cosmetic according to any one of claims 1 to 5, wherein the perfume complex has an average particle size of 500 nm or less. The cosmetic according to any one of claims 1 to 6, wherein the (B1) surfactant is a nonionic surfactant. The surfactant (B1) is a polyether-modified silicone, POE-sorbitan fatty acid ester, POE sorbit fatty acid ester, POE-glycerin fatty acid ester, POE-fatty acid ester, POE-alkyl ether, Pluronic, POE/POP-alkyl ether, Tetra-POE/tetra-POP-ethylenediamine condensates, POE-castor oil hydrogenated castor oil derivatives, POE-beeswax/lanolin derivatives, POE-propylene glycol fatty acid esters, alkylene oxide/ethylene oxide-dimer diol ethers, POE-alkylamines, and POE- The cosmetic according to any one of claims 1 to 7, which is selected from the group consisting of fatty acid amides. A method for producing an oil-in-water cosmetic according to any one of claims 1 to 8, comprising the following steps:
(A1) solid oil content and (A2) liquid oil content adjusted to a temperature exceeding the melting point and liquefied are introduced into an aqueous solvent adjusted to a temperature exceeding the melting point under stirring at 10 to 1500 rpm to form a mixture, A step of cooling the mixture to room temperature under the stirring to form (A) oily capsules having an average particle size of 100 μm or more;
(B1) a surfactant having an HLB of 8.5 or higher and (B2) a perfume dissolved in a lower alcohol or polyhydric alcohol, introduced into an aqueous solvent and stirred to form (B) a perfume complex; and A method comprising the step of mixing the (A) oily capsule and the (B) perfume complex.