Multi-layered mist cosmetic

Abstract

To provide a mist cosmetic that offers a sufficiently fine mist and a good adherence to the skin. [Solution] The following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactants with HLB values ​​of 10 to 20, (C) electrolyte, (D)Water A multi-layer mist cosmetic containing the above, wherein the mass ratio (oil layer) / (water layer) of the oil layer containing component (A) to the water layer containing components (B) to (D) is 0.01 or more and 0.5 or less.

Description

Technical Field

[0001] The present invention relates to a multi-layer mist cosmetic.

Background Art

[0002] A mist cosmetic is a cosmetic that applies a cosmetic in a mist state directly to the skin. The mist cosmetic contains water and a moisturizing component, and when applied to the skin, mist adheres to the skin, thereby obtaining a moisturizing feeling. For example, Patent Document 1 describes a mist cosmetic containing gellan gum, polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether, and lysine diacylglutamate, and Patent Document 2 describes a multi-layer mist cosmetic characterized by containing carboxymethyl dextran and / or its salt, inorganic salts, an oil agent that is liquid at 25°C, and water and not containing a surfactant.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to obtain a sufficient moisturizing feeling, a large amount of mist may be adhered, but if the mist is not fine, the usability as a mist cosmetic is impaired. On the other hand, if the mist is too fine, the feeling of adhesion of the mist to the skin (moisturizing feeling) will be insufficient. In conventional mist cosmetics, there are still problems with making the mist finer and the feeling of adhesion of the mist to the skin (moisturizing feeling).

[0005] An object of the present invention is to provide a mist cosmetic in which the fineness of the mist can be sufficiently felt and the feeling of adhesion to the skin is good. [Means for solving the problem]

[0006] Therefore, the inventors conducted various studies to solve the aforementioned problems and found that by incorporating liquid higher fatty acids, a good adhesion can be obtained even though a fine mist is sprayed. However, the resulting cosmetic composition was multilayered, resulting in a problem of insufficient redispersibility. Upon further investigation, the inventors found that by incorporating a silicone-based surfactant with a certain HLB value as an emulsifying component, a multilayered mist cosmetic composition with good redispersibility can be obtained.

[0007] In other words, the present invention comprises the following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactants with HLB 10 to 20 or less (C) Electrolyte (D)Water The present invention provides a multi-layer mist cosmetic composition containing the above, wherein the mass ratio ((oil layer) / (water layer)) of the oil layer containing component (A) to the aqueous layer containing components (B) to (D) is 0.01 or more and 0.5 or less. [Effects of the Invention]

[0008] The multi-layered mist cosmetic composition of the present invention, despite being sprayed as a fine mist, has good adhesion (moisturizing effect), is non-sticky, and has good redispersibility. Furthermore, even when not used as a mist cosmetic, the cosmetic composition of the present invention has good redispersibility, provides good moisturizing effect on the skin after application, and is non-sticky, making it useful as a multi-layer cosmetic composition. [Modes for carrying out the invention]

[0009] Terms used herein shall be used in the sense commonly used in the art unless otherwise specified.

[0010] The present invention relates to a multilayer mist cosmetic composition, one embodiment thereof comprising the following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactants with HLB 10 to 20 or less (C) Electrolyte (D)Water This is a multi-layered mist cosmetic containing the above, wherein the mass ratio ((oil layer) / (water layer)) of the oil layer containing component (A) to the water layer containing components (B) to (D) is 0.01 or more and 0.5 or less. Furthermore, this cosmetic composition is also useful as a multi-layer cosmetic composition because, even without being used as a mist, it has good redispersibility, provides good moisturizing effects on the skin after application, and is non-sticky. Therefore, another aspect of the present invention is the following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactants with HLB 10 to 20 or less (C) Electrolyte (D)Water This is a multilayer cosmetic composition containing the above, wherein the mass ratio ((oil layer) / (water layer)) of the oil layer containing component (A) to the aqueous layer containing components (B) to (D) is 0.01 or more and 0.5 or less.

[0011] The component (A) used in this invention is a higher fatty acid that is liquid at 25°C. Here, "liquid" means that the viscosity at 25°C is 10,000 mPa·s or less. Viscosity is measured using a B-type viscometer (VISCOMETER TVB-10, manufactured by Toki Sangyo Co., Ltd.), rotor No. 4, 12 rpm, and 1 minute. Component (A) is, for example, a fatty acid having 12 to 22 carbon atoms and possessing unsaturated bonds or branched chains. More specifically, examples include unsaturated fatty acids such as palmitoleic acid, oleic acid, linoleic acid, linolenic acid, eicosenoic acid, and erucic acid; and branched saturated fatty acids such as isomyristateic acid, isopalmitic acid, and isostearic acid. From the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, component (A) preferably contains one or more selected from palmitoleic acid, oleic acid, linoleic acid, isopalmitic acid, and isostearic acid, more preferably contains one or more selected from oleic acid, linoleic acid, and isostearic acid, and even more preferably contains isostearic acid.

[0012] The higher fatty acid of component (A) can be of one or more types, and from the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, and from the viewpoint of creating a multi-layered cosmetic composition, it is preferable that the total composition contains 0.02% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and also preferable that it contains 3% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. Specifically, it is preferable that it contains 0.02% by mass or more and 3% by mass or less, more preferably 0.05% by mass or more and 2% by mass or less, and even more preferably 0.1% by mass or more and 1% by mass or less.

[0013] Component (B) used in the present invention is a silicone-based surfactant with an HLB of 10 to 20. Here, HLB (Hydrophilic-Lipophilic Balance) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and in the present invention, for silicone-based surfactants, it is determined by Griffin's formula. From the viewpoint of providing a sufficiently fine mist, good adhesion to the skin, and good redispersibility, component (B) is preferably HLB 12 to 16, and more preferably HLB 13 to 15.

[0014] Examples of silicone-based surfactants for component (B) include polyether-modified silicones. The polyether-modified silicone may consist of either linear or branched silicone chains. Examples of linear silicone chains include PEG-10 dimethicone, PEG-12 dimethicone, and PEG-11 methyl ether dimethicone. As component (B), from the viewpoints of enabling a sufficiently fine mist to be felt and having a good feeling of adhesion to the skin, and from the viewpoint of having good redispersibility, it is preferable to include a polyether-modified silicone in which the silicone chain is of a linear type, more preferably to include one or more selected from PEG-10 dimethicone, PEG-12 dimethicone, and PEG-11 methyl ether dimethicone, still more preferably to include one or more selected from PEG-10 dimethicone and PEG-11 methyl ether dimethicone, and even more preferably to include PEG-11 methyl ether dimethicone. Examples of commercially available products of the silicone surfactant as component (B) include DOWSIL SS-2804 (manufactured by Dow Corning Toray Co., Ltd., HLB: 13.5) which is PEG-12 dimethicone, silicone KF6043 (manufactured by Shin-Etsu Chemical Co., Ltd., HLB: 14.5) which is PEG-10 dimethicone, silicone KF6011 (manufactured by Shin-Etsu Chemical Co., Ltd., HLB: 14.5) which is PEG-11 methyl ether dimethicone, and the like.

[0015] Component (B) can be used alone or in combination of two or more. From the viewpoints of enabling a sufficiently fine mist to be felt and having a good feeling of adhesion to the skin, and from the viewpoint of having good redispersibility, the content is preferably 0.002% by mass or more, more preferably 0.005% by mass or more, still more preferably 0.008% by mass or more in the total composition, and preferably 0.1% by mass or less, more preferably 0.08% by mass or less, still more preferably 0.03% by mass or less. Specifically, it is preferably 0.002% by mass or more and 0.1% by mass or less, more preferably 0.005% by mass or more and 0.08% by mass or less, still more preferably 0.008% by mass or more and 0.03% by mass or less.

[0016] As the electrolyte of component (C), any electrolyte can be used as long as it is used in ordinary cosmetics, and inorganic acids and their salts, and organic acids having 10 or less carbon atoms and their salts are preferable. Examples of the inorganic acid include hydrochloric acid, nitric acid, nitrous acid, sulfuric acid, sulfurous acid, phosphoric acid, phosphonic acid, phosphinic acid, etc., and it is preferable to include one or more selected from hydrochloric acid, sulfuric acid, and phosphoric acid. In addition, examples of the salts of inorganic acids include sodium chloride, potassium chloride, calcium chloride, magnesium chloride, aluminum chloride, potassium dihydrogen phosphate, disodium hydrogen phosphate, etc. It is preferable to contain one or more selected from sodium chloride, potassium chloride, potassium dihydrogen phosphate, and disodium hydrogen phosphate, more preferably to contain one or more selected from sodium chloride, potassium dihydrogen phosphate, and disodium hydrogen phosphate, and even more preferably to contain sodium chloride. In addition, as the organic acids having 10 or less carbon atoms and their salts, water-soluble organic acids and their salts are preferable. Examples thereof include fatty acids, hydroxy acids, dicarboxylic acids, acidic amino acids having 1 to 10 carbon atoms, and their salts. Among these, it is preferable to contain one or more selected from malic acid, lactic acid, citric acid, succinic acid, acetic acid, tartaric acid, glutamic acid, aspartic acid, adipic acid, edetic acid, and their salts, more preferably to contain one or more selected from malic acid, lactic acid, citric acid, succinic acid, edetic acid, and their salts, even more preferably to contain one or more selected from citric acid, succinic acid, edetic acid, and their salts, and even more preferably to contain one or more selected from citric acid, edetic acid, and their salts.

[0017] Component (C) can be used in combination of one or more. From the viewpoints of enabling a sufficient feeling of fine mist and good adhesion to the skin, and good redispersibility, the content is preferably 0.1% by mass or more, more preferably 0.15% by mass or more, even more preferably 0.2% by mass or more in the whole composition, and preferably 1% by mass or less, more preferably 0.7% by mass or less, even more preferably 0.4% by mass or less. Specifically, it is preferably 0.1% by mass or more and 1% by mass or less, more preferably 0.15% by mass or more and 0.7% by mass or less, and even more preferably 0.2% by mass or more and 0.4% by mass or less. The mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.002 or higher, more preferably 0.007 or higher, even more preferably 0.025 or higher, even more preferably 0.028 or higher, especially preferably 0.035 or higher, and also preferably 0.8 or lower, more preferably 0.3 or lower, even more preferably 0.15 or lower, even more preferably 0.12 or lower, and especially preferably 0.07 or lower. Specifically, it is preferably 0.002 or higher and 0.8 or lower, more preferably 0.007 or higher and 0.3 or lower, even more preferably 0.025 or higher and 0.15 or lower, even more preferably 0.028 or higher and 0.12 or lower, and especially preferably 0.035 or higher and 0.07 or lower.

[0018] The cosmetic composition of the present invention contains (D) water as the main component of the aqueous layer. From the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, and from the viewpoint of improving the freshness when applied to the skin, the water content is preferably 50% to 98% by mass in the total composition, more preferably 60% to 97% by mass, even more preferably 65% ​​to 95% by mass, and still more preferably 70% to 92% by mass.

[0019] The cosmetic composition of the present invention is a multilayer cosmetic composition that separates into multiple layers when standing and is shaken to a uniform dispersion state before being applied to the skin. More specifically, it is a multilayer cosmetic composition that separates into an aqueous layer and an oil layer when standing and is shaken to a uniform dispersion state before being applied to the skin. The multilayer cosmetic composition of the present invention separates into an aqueous layer containing components (B) to (D) and an oil layer containing component (A) when standing. In the multilayer cosmetic composition of the present invention, the content of the oil layer containing component (A) is preferably 3% to 35% by mass, more preferably 5% to 30% by mass, and even more preferably 8% to 25% by mass, from the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, as well as good redispersibility. Furthermore, from a similar viewpoint, the content of the aqueous layer containing components (B) to (D) is preferably 65% ​​to 97% by mass, more preferably 70% to 95% by mass, and even more preferably 75% to 92% by mass in the total composition. In the multilayer cosmetic composition of the present invention, from the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, and from the viewpoint of ensuring good redispersibility, the mass ratio ((oil layer) / (water layer)) of the oil layer containing component (A) to the water layer containing components (B) to (D) is preferably 0.01 or more, more preferably 0.03 or more, even more preferably 0.08 or more, and also preferably 0.5 or less, more preferably 0.4 or less, and even more preferably 0.3 or less. Specifically, 0.01 to 0.5 is preferred, 0.03 to 0.4 is preferred, and 0.08 to 0.3 is even more preferred.

[0020] The multilayer cosmetic composition of the present invention further contains one or more oils (E) selected from hydrocarbon oils, ester oils, and silicone oils that are liquid at 25°C as an oil layer component, thereby enabling a sufficiently fine mist, good adhesion to the skin, and good redispersibility. Here, "liquid" means that the viscosity at 25°C is 10,000 mPa·s or less. Viscosity is measured using a B-type viscometer (VISCOMETER TVB-10, manufactured by Toki Sangyo Co., Ltd.), rotor No. 4, 12 rpm, and 1 minute. Examples of hydrocarbon oils include liquid paraffin, light liquid isoparaffin, liquid isoparaffin, squalane, and squalene. Preferably, the hydrocarbon oil contains one or more selected from squalane, liquid paraffin, liquid isoparaffin, and light liquid isoparaffin; more preferably, it contains one or more selected from squalane, liquid paraffin, and liquid isoparaffin; even more preferably, it contains one or more selected from squalane and liquid isoparaffin; and even more preferably, it contains squalane.

[0021] Examples of ester oils include monoester oils, diester oils, triester oils, and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic acids or dicarboxylic acids having 2 to 24 carbon atoms. Specific examples include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, octyl methoxycinnamate, alkyl benzoates (C12-C15), and jojoba oil. The monoester oil preferably contains one or more selected from isononyl isononanoate, isotridecyl isononanoate, and jojoba oil; more preferably contains one or more selected from isotridecyl isononanoate and jojoba oil; and even more preferably contains jojoba oil.

[0022] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms, and difatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate and neopentyl glycol dicaprate. The diester oil preferably contains neopentyl glycol dicaprate.

[0023] Examples of triester oils include tri-fatty acid esters of polyhydric alcohols with a valency of 3 or higher. Specifically, these include glyceryl trimyristate, glyceryl triisopalmitate, glyceryl tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric acid) glyceryl, glyceryl trioleate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, and vegetable oils such as olive oil, grape seed oil, macadamia nut oil, almond oil, meadowfoam oil, castor oil, safflower oil, sunflower oil, avocado oil, canola oil, apricot kernel oil, rice germ oil, and rice bran oil. The triester oil preferably contains one or more selected from tri(caprylic / capric acid) glyceryl tri-2-ethylhexanoate and vegetable oil; more preferably contains one or more selected from tri(caprylic / capric acid) glyceryl tri-2-ethylhexanoate, olive oil, macadamia nut oil, and almond oil; even more preferably contains one or more selected from tri(caprylic / capric acid) glyceryl tri-2-ethylhexanoate and olive oil; and even more preferably contains tri(caprylic / capric acid) glyceryl.

[0024] Examples of tetraester oils include tetra fatty acid esters of polyhydric alcohols with four or more valencies, specifically tetra(behenic acid / benzoic acid / ethylhexanoic acid) pentaerythritol, tetraethylhexanoate pentaerythritol, tetraoctanoate pentaerythritol, tetra-2-ethylhexanoate pentaerythritol, and tetrahexyldecanoate ascorbyl.

[0025] The ester oil preferably contains one or more selected from monoester oils and triester oils, and more preferably contains triester oil. Examples of silicone oils include volatile and non-volatile linear dimethylpolysiloxanes such as dimethylpolysiloxane (1 cs), dimethylpolysiloxane (1.5 cs), dimethylpolysiloxane (2 cs), dimethylpolysiloxane (6 cs), dimethylpolysiloxane (10 cs), and dimethylpolysiloxane (50 cs); branched siloxanes such as methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; cyclic dimethylpolysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; cross-linked methylpolysiloxanes; network methylpolysiloxanes; methylphenylpolysiloxanes such as diphenylsiloxyphenyl trimethicone; and higher alcohol-modified organopolysiloxanes. The silicone oil preferably contains one or more selected from linear dimethylpolysiloxane and methylphenylpolysiloxane, more preferably contains linear dimethylpolysiloxane, even more preferably contains non-volatile linear dimethylpolysiloxane, and even more preferably contains dimethylpolysiloxane (6cs). As one or more oils (E) selected from hydrocarbon oils, ester oils, and silicone oils that are liquid at 25°C, it is preferable that the oil contains an ester oil, more preferably triester oil, and even more preferably tri(caprylic / capric acid) glyceryl, from the viewpoint of providing a sufficiently fine mist, good adhesion to the skin, and good redispersibility.

[0026] The content of one or more oils (E) selected from hydrocarbon oils, ester oils, and silicone oils that are liquid at 25°C is preferably 2.98% by mass or more and 32% by mass or less, more preferably 4.95% by mass or more and 28% by mass or less, and even more preferably 7.9% by mass or more and 24% by mass or less, in the total composition, from the viewpoint of ensuring a sufficiently fine mist and good adhesion to the skin, and from the viewpoint of ensuring good redispersibility.

[0027] The multilayer cosmetic composition of the present invention may further contain, as an aqueous layer component, (F) alcohols selected from polyhydric alcohols and ethanol. The polyhydric alcohol is a compound having two or more hydroxyl groups in its molecule, and any of those commonly used in cosmetics may be used. Examples of dihydric alcohols include polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, and propanediol. Examples of trihydric alcohols include glycerin and trimethylolpropane. Examples of tetrahydric alcohols include diglycerin and erythritol. Examples of pentahydric or higher polyhydric alcohols include polyglycerins such as triglycerin; sugars and sugar alcohols such as glucose, maltose, maltodose, sucrose, xylitol, sorbitol, malbitol, polyoxyethylene methyl glucoside, polyoxyethylene ethyl glucoside, and polyoxyethylene propylene glucoside.

[0028] As for the polyhydric alcohol, from the viewpoint of improving moisturizing properties, it is preferable to include one or more selected from dihydric alcohols, trihydric alcohols, tetrahydric alcohols, and sugar alcohols; more preferably to include one or more selected from dihydric alcohols, trihydric alcohols, and tetrahydric alcohols; even more preferably to include one or more selected from dihydric alcohols and trihydric alcohols; even more preferably to include one or more selected from polyethylene glycol, propanediol, dipropylene glycol, 1,3-butylene glycol, and glycerin; and especially preferably to include one or more selected from polyethylene glycol, dipropylene glycol, and glycerin.

[0029] (F1) Polyhydric alcohols can be used individually or in combination of two or more types. From the viewpoint of improving moisturizing sensation, ensuring a sufficiently fine mist, and providing good adhesion to the skin, the content is preferably 0.5% by mass or more and 20% by mass or less in the total composition, more preferably 1% by mass or more and 16% by mass or less, and even more preferably 2% by mass or more and 12% by mass or less. Furthermore, from the viewpoint of ensuring that the fineness of the mist is sufficiently noticeable and that it adheres well to the skin, the content of (F2) ethanol is preferably 3% to 20% by mass in the total composition, more preferably 4% to 15% by mass, and even more preferably 5% to 12% by mass.

[0030] The multilayer mist cosmetic composition of the present invention may contain, in addition to the above-mentioned components, components commonly used in cosmetics, such as surfactants other than component (B), antioxidants, preservatives, blood circulation promoters, cooling agents, antiperspirants, bactericidal agents, skin activators, moisturizers other than those mentioned above, cooling agents, etc. From the viewpoint of a mist cosmetic composition, the powder content is preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably substantially free.

[0031] From the viewpoint of spraying the multilayer mist cosmetic composition of the present invention at an appropriate angle, the viscosity at 25°C is preferably 0.1 to 8 mPa·s, more preferably 0.3 to 3.5 mPa·s, even more preferably 0.5 to 3 mPa·s, and still more preferably 1 to 2.5 mPa·s. Viscosity is measured at 25°C using a vibrating viscometer VISCOMATE VM-10A (manufactured by SEKONIC).

[0032] From the viewpoint of spraying at an appropriate angle when sprayed, the multilayer mist cosmetic composition of the present invention preferably has a surface tension of 25 to 45 mN / m at 25°C, more preferably 28 to 41 mN / m, even more preferably 30 to 40.5 mN / m, and even more preferably 32 to 40 mN / m. Surface tension is measured at 25°C using a Drop Master-701 contact angle meter (manufactured by Kyowa Interface Science Co., Ltd.) and the pendant drop method.

[0033] The multilayer mist cosmetic composition of the present invention can be manufactured according to conventional methods. For example, an oily component containing component (A) is mixed and stirred to obtain a homogeneous oil layer mixture. Component (C) is added to a portion of the water in component (D), heated and stirred to obtain a homogeneous aqueous layer mixture. The oil layer mixture and the aqueous layer mixture are then filled into a pump-type spray container to obtain each multi-layered mist cosmetic. Furthermore, in the case of multi-layered cosmetic products that are not used as a mist, it is not necessary to fill them into a pump-type spray container.

[0034] The multilayer mist cosmetic composition of the present invention is filled into a non-gas type pump-type spray container, and it is preferable that it is filled into a non-gas type pump-type spray container with a nozzle diameter of 0.5 mm or less. The spray container filled with the multilayer mist cosmetic of the present invention is not a gas aerosol type such as liquefied petroleum gas. Suitable spray containers include dispensers, air sprays (high-pressure containers that compress air), rubber elasticity spray containers, electric sprays, manual atomizers, etc. In the spray container used in the present invention, the nozzle diameter is preferably 0.5 mm or less, more preferably 0.4 mm or less, and even more preferably 0.3 mm or less, from the viewpoint of spraying the cosmetic in a mist form, spraying at a more appropriate angle, and improving quick-drying after application to the skin. Furthermore, the lower limit of the nozzle diameter is preferably 0.05 mm or more, more preferably 0.1 mm or more, and even more preferably 0.2 mm or more, from the viewpoint of spraying at a more appropriate angle and improving quick-drying after application to the skin.

[0035] The spray container for the multilayer mist cosmetic of the present invention is preferably configured such that, from the viewpoint of spraying at a more appropriate angle and improving quick-drying after application to the skin, the average particle size of the sprayed droplets at a point 15 cm away from the nozzle in the spraying direction is 50 to 100 μm, more preferably 60 to 90 μm, and even more preferably 65 to 85 μm. The particle size distribution of the sprayed droplets can be measured, for example, by a laser diffraction particle size analyzer Spraytec (manufactured by Malvern Panalytical).

[0036] The multilayer mist cosmetic of the present invention can be used as a cosmetic, deodorant, moisturizer, and insect repellent to provide a cooling sensation to the skin, and is preferably used as a moisturizer. In particular, when applied to the skin, the mist can be uniformly applied to a wide area such as the front of the body, the entire arms, the back, the armpits and flanks, the head, feet, and legs, and the mist dries quickly while the moisturizer remains on the skin, making it useful as a cosmetic with excellent quick-drying and moisturizing properties. [Examples]

[0037] The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0038] Examples 1-9 and Comparative Examples 1-3 Two-layer mist cosmetics were manufactured using the ingredients listed in Tables 1 and 2, and their spray angle, redispersibility, non-stickiness, and moisturizing effect were evaluated. The results are shown in Tables 1 and 2.

[0039] (Manufacturing method) An oil layer mixture was obtained by mixing and stirring an oily component containing component (A) at 25°C until homogenized. Preparation 1 was obtained by adding component (C) to a portion of the water in component (D), heating and stirring until homogenized, and then cooling to 25°C. Preparation 2 was obtained by mixing ethanol with component (B) and phenoxyethanol at 25°C and stirring until homogenized. An aqueous layer mixture was obtained by mixing Preparation 1, Preparation 2, the remaining water in component (D), and the remaining aqueous component at 25°C and stirring until homogenized. The oil layer mixture and the aqueous layer mixture were filled into a pump-type spray container (Yoshino Kogyosho Co., Ltd., model number YS-90 Φ0.26) at 25°C to obtain two-layer mist cosmetics.

[0040] (Evaluation method) (1) Spray angle: In a constant temperature chamber at 25°C, two-layer mist cosmetic was filled into Yoshino Kogyosho Co., Ltd. containers (model number YS-90, Φ0.26) and placed on a flat surface. A camera was positioned 30 cm to the side of the container's nozzle, relative to the spray direction, and an image was captured simultaneously with one spray of the two-layer mist cosmetic. From this image, the angle of the spray range of the two-layer mist cosmetic was measured. (2) Re-separability: Each 50g of two-layer mist cosmetic was placed in a container (standard bottle PS-6K, manufactured by Daiichi Glass Co., Ltd.), shaken 10 times, and then left to stand overnight. The separation state of the interface between the water and oil layers was visually observed and evaluated according to the following criteria. The results are shown as the total score from three evaluations. 4: The interface is clearly defined. 3: The interface is almost clearly defined. 2: The interface is somewhat translucent, semi-opaque, and indistinct. 1: The interface is clearly semi-transparent, semi-opaque, or whitish and indistinct. (3) Non-greasy and moisturizing: Three evaluators sprayed each two-layer mist cosmetic onto their skin and evaluated the non-stickiness and moisturizing effect after application according to the following criteria. The results are shown as the total score from the three evaluators. • No stickiness on the skin after application: 4. It's not sticky. 3: It's hardly sticky at all. 2: Slightly sticky. 1: It's sticky. • Moisturizing effect on the skin after application: 4: It clearly feels moisturizing. 3: It feels moisturizing. 2: It doesn't provide much moisture. 1: It doesn't feel moisturizing.

[0041] [Table 1]

[0042] [Table 2]

[0043] Examples 10-12 Two-layer mist cosmetic compositions of Examples 10-12 (Tables 3-5) were manufactured in the same manner as described above.

[0044] [Table 3]

[0045] [Table 4]

[0046] [Table 5]

[0047] *1: Isostearic acid EX (manufactured by Higher Alcohol Industry Co., Ltd.) *2: Coconard MT (manufactured by Kao Corporation) *3: NIKKOL Sugar Squalane (manufactured by Nippon Surfactant Co., Ltd.) *4: KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *5: 95% synthetic alcohol (manufactured by Nippon Synthetic Alcohol Co., Ltd.) *6: KF-6011 (manufactured by Shin-Etsu Chemical Co., Ltd.) *7: M Fine Oil ISG-20M (manufactured by Miyoshi Oil & Fat Co., Ltd.) *8: DPG-RF (manufactured by ADEKA) *9: PEG #1500 (manufactured by NOF Corporation) *10: PEG #4000 (manufactured by NOF Corporation)

Claims

1. The following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactant with an HLB of 10 to 20, (C) electrolyte, (D) Water A multi-layer mist cosmetic containing the above, wherein the mass ratio (oil layer) / (water layer) of the oil layer containing component (A) to the water layer containing components (B) to (D) is 0.01 or more and 0.5 or less.

2. The multilayer mist cosmetic composition according to claim 1, wherein component (A) comprises one or more selected from oleic acid, linoleic acid, and isostearic acid.

3. The multilayer mist cosmetic composition according to claim 1 or 2, wherein the content of component (A) is 0.02% by mass or more and 3% by mass or less in the total composition.

4. The multilayer mist cosmetic composition according to claim 1 or 2, wherein the content of component (B) is 0.002% by mass or more and 0.1% by mass or less in the total composition.

5. Furthermore, the multilayer mist cosmetic composition according to claim 1 or 2 further comprises component (E) one or more selected from hydrocarbon oils, ester oils, and silicone oils that are liquid at 25°C.

6. The following components (A) to (D): (A) Higher fatty acids that are liquid at 25°C (B) Silicone-based surfactant with an HLB of 10 to 20, (C) electrolyte, (D) Water A multilayer cosmetic composition containing the above, wherein the mass ratio (oil layer) / (water layer) of the oil layer containing component (A) to the water layer containing components (B) to (D) is 0.01 or more and 0.5 or less.

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