JP7532063B2 - Oily composition - Google Patents

Description

The present invention relates to an oil-based composition containing an antiperspirant component such as aluminum potassium sulfate, and more specifically, to an oil-based composition that exhibits excellent redispersibility of the antiperspirant component.

Known antiperspirant ingredients that reduce the amount of sweating include aluminum potassium sulfate (alum), dried aluminum potassium sulfate (burnt alum), and aluminum hydroxychloride. These antiperspirant ingredients reduce the amount of sweating by blocking or contracting the sweat glands, and are therefore used in antiperspirants such as sprays and lotions.

In addition to antiperspirant ingredients, antibacterial ingredients are also used in antiperspirants to inhibit the growth of microorganisms that oxidize and decompose secretions from sweat glands and cause odors. However, when the antiperspirant ingredient alum is combined with a specific inorganic antibacterial ingredient, discoloration occurs when it comes into contact with clothing. In response to this, a technology has been disclosed that prevents discoloration by incorporating zinc oxide (Patent Document 1).

However, although the use of zinc oxide does indeed prevent discoloration of clothing when it comes into contact with the skin, the alum and metal oxide aggregate over time, forming aggregates that are difficult to redisperse even when shaken, making it difficult to apply the alum and metal oxide uniformly, resulting in the problem of insufficient antiperspirant and sunscreen effects.

JP 2014-105186 A

The objective of the present invention is to provide a composition that has excellent redispersibility of antiperspirant ingredients such as aluminum potassium sulfate and metal oxides.

The inventors conducted extensive research to solve the above problems and discovered that redispersibility was improved by combining an antiperspirant component such as aluminum potassium sulfate with a hydrophobized metal oxide and an organic UV absorber, and then forming an oil-based composition mainly composed of an oil agent, thus completing the present invention.

That is, the present invention provides the following.
[1]
The following components (A) to (C):
The oil-based composition comprises: component (A) one or more selected from the group consisting of aluminum potassium sulfate, dry aluminum potassium sulfate, and aluminum hydroxychloride; component (B) an organic ultraviolet absorber; and component (C) a hydrophobized metal oxide.
[2]
The oily composition according to [1], wherein the average particle size of the component (A) is 10 nm to 50 μm.
[3]
The oily composition according to [1] or [2], further comprising a surfactant having an HLB of 16 or less as component (D).
[4]
The oily composition according to any one of [1] to [3], further comprising an organic spherical powder as component (E).
[5]
The oily composition according to any one of [1] to [4], which is liquid at 25°C.
[6]
The oily composition according to any one of [1] to [5], further comprising, as component (F), one or more selected from the group consisting of propylene glycol dicaprate, alkyl benzoate, isononyl isononanoate, and phytosteryl oleate.
[7]
The oily composition according to any one of [1] to [6], wherein the component (B) is ethylhexyl methoxycinnamate.
[8]
The oily composition according to [7], wherein the mass ratio of the component (A) to the ethylhexyl methoxycinnamate, (A)/(ethylhexyl methoxycinnamate), is 0.01 to 8.

The oil-based composition of the present invention has excellent redispersibility of antiperspirant components such as aluminum potassium sulfate and metal oxides, and provides good antiperspirant effects when applied. The oil-based composition of the present invention also has excellent sunscreen effects, is less sticky, and is easy to use. Furthermore, the oil-based composition of the present invention has high water resistance and is excellent in the durability of its antiperspirant and sunscreen effects.

The present invention will be described in detail below, focusing on its preferred embodiments. In this specification, "-" means a range including the numerical values before and after it.

Component (A) used in the present invention is one or more antiperspirant components selected from the group consisting of aluminum potassium sulfate, dry aluminum potassium sulfate, and aluminum hydroxychloride.

Aluminum potassium sulfate can be represented by the chemical formula Al ₂ (SO ₄ ) ₃ ·16H ₂ O. Aluminum potassium sulfate is dehydrated by heating or the like to obtain dry aluminum potassium sulfate.

Potassium aluminum sulfate may be called potash alum, and dry potassium aluminum sulfate may be called burnt alum.

Aluminum hydroxychloride is an aluminum salt in which aluminum ions, hydroxide ions, and chloride ions form a double salt. It can also be called chlorohydroxy Al or chlorohydroxy aluminum.

In the present invention, component (A) is not particularly limited as long as it is one that is normally used in cosmetics, quasi-drugs, pharmaceuticals, etc. Commercially available products of component (A) include potassium aluminum sulfate granules (manufactured by Taimei Chemical Industry Co., Ltd.), dried aluminum potassium sulfate such as TAIACE K150 and TAIACE K20 (manufactured by Taimei Chemical Industry Co., Ltd.), and aluminum hydroxychloride such as Alloxicol 31L (manufactured by BK Giulini GmbH) and aluminum hydroxychloride (manufactured by Clariant Japan Co., Ltd.).

The average particle size of component (A) is not particularly limited, but from the viewpoint of redispersibility of component (A) and the like, it is preferably from 10 nm to 50 μm, more preferably from 100 nm to 20 μm, and particularly preferably from 1 to 5 μm.
In the present invention, the average particle size is measured as the volume average particle size (D50) using a laser scattering particle size distribution analyzer (manufactured by HORIBA, Ltd.).

The content of component (A) is not particularly limited, but from the viewpoint of antiperspirant effect, it is preferably 0.1% by mass (hereinafter simply referred to as "%)" or more, and more preferably 1% or more. In addition, the content of component (A) is not particularly limited, but from the viewpoint of antiperspirant effect, it is preferably 10% or less, and more preferably 8% or less.

In the present invention, component (B) is an organic UV absorber.

Component (B) is not particularly limited as long as it is one that is commonly used in cosmetics, quasi-drugs, pharmaceuticals, and the like. Specific examples include ethylhexyl methoxycinnamate, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester, ethyl paraaminobenzoate, benzophenone-1, benzophenone-3, benzophenone-6, benzophenone-9, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, dioctylbutamide triazone, 4-tert-butyl-4'-methoxy-dibenzoylmethane, 2,4-bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, 2,2'-methylenebis[6-(2H-benzotriazol-2yl)-4-(1,1,3,3-tetramethylbutyl)phenol], polysilicone-15, and the like. One or more of these can be used.
Among these, from the viewpoint of redispersibility of component (A) and the like, component (B) is preferably one or more selected from the group consisting of ethylhexyl methoxycinnamate, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester, 4-tert-butyl-4'-methoxy-dibenzoylmethane, and 2,4-bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, more preferably one or more selected from the group consisting of ethylhexyl methoxycinnamate, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester, and 2,4-bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, and particularly preferably ethylhexyl methoxycinnamate.

In the present invention, when ethylhexyl methoxycinnamate is used as component (B), the mass ratio of component (A) to ethylhexyl methoxycinnamate (mass ratio of component (A) to ethylhexyl methoxycinnamate (A)/(ethylhexyl methoxycinnamate)) is not particularly limited, but from the viewpoint of redispersibility of component (A) etc., it is preferably 0.01 or more, more preferably 0.1 or more, and even more preferably 0.2 or more. In addition, the mass ratio (A)/(ethylhexyl methoxycinnamate) is not particularly limited, but from the viewpoint of redispersibility of component (A) etc., it is preferably 8 or less, more preferably 2 or less, and even more preferably 1.5 or less.

The content of component (B) is not particularly limited, but from the viewpoint of sunscreen effect, etc., it is preferably 1% or more, and more preferably 5% or more. Also, the content of component (B) is not particularly limited, but from the viewpoint of usability such as low stickiness, it is preferably 20% or less, and more preferably 15% or less.

In the present invention, component (C) is a hydrophobically treated metal oxide.

The metal oxide used in component (C) is not particularly limited as long as it is one that is commonly used in cosmetics, quasi-drugs, pharmaceuticals, etc., but in terms of ease of availability on the market, one or more types selected from the group consisting of zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide are preferred. The metal oxide is not particularly limited, but in terms of sunscreen effect, it is preferable that it is one or more types selected from the group consisting of zinc oxide, titanium oxide, and cerium oxide. In addition, the metal oxide can contain trace elements with a valence of +2 or more, and metals such as iron, zirconium, calcium, manganese, magnesium, and yttrium can be contained in the metal oxide alone or in appropriate combination of two or more types.

The particle size of the metal oxide is not particularly limited, but from the viewpoint of redispersibility of component (A) etc., the average particle size is preferably 1 nm to 1 μm, more preferably 3 nm to 100 nm, and even more preferably 5 nm to 30 nm. In the present invention, the average particle size means the value measured by the volume average particle size (D50) using a laser scattering particle size distribution meter (manufactured by HORIBA).

The shape of the metal oxide is not particularly limited, but examples include granular, spherical, spindle-shaped, dendritic, balloon-shaped, etc., and from the standpoint of redispersibility of component (A), etc., granular, spherical, or spindle-shaped is preferable.

The metal oxide is not particularly limited, but examples of commercially available zinc oxide include FINEX-25, FINEX-50, and FINEX-75 (manufactured by Sakai Chemical Industry Co., Ltd.), MZ500 series, MZ700 series (manufactured by Teika Corporation), and ZnO-350 (manufactured by Sumitomo Osaka Cement Co., Ltd.). Examples of commercially available titanium oxide include the TTO-55 series, TTO-51 series (manufactured by Ishihara Sangyo Kaisha), JR series, and JA series (manufactured by Teika Corporation). Examples of cerium oxide include high-purity cerium sold by Nikki Co., Ltd. or Seimi Chemical Co., Ltd.

The hydrophobic treatment agent of component (C) is not particularly limited as long as it is one that is commonly used in cosmetics, quasi-drugs, pharmaceuticals, etc., but examples include silicone treatment agents, fluorine treatment agents, organic titanate treatment agents, fatty acid treatment agents, lecithin treatment agents, amino acid treatment agents, and acylated amino acid treatment agents. Among these, from the viewpoint of redispersibility of component (A) etc., one or more selected from silicone treatment agents, organic titanate treatment agents, fatty acid treatment agents, and acylated amino acid treatments are preferred, and one or more selected from silicone treatment agents, organic titanate treatment agents, and acylated amino acid treatments are particularly preferred.

Examples of silicone treatment agents include linear silicones such as low-polymerization dimethylpolysiloxane, high-polymerization dimethylpolysiloxane, and methylphenylpolysiloxane; modified silicones such as amino-modified silicone, alkyl-modified silicone, and alkoxy-modified silicone; silicone resins such as trimethylsiloxysilicate and acrylic-silicone graft copolymer; silicone rubbers; partially or fully crosslinked organopolysiloxanes; silylation agents; and silane coupling agents; and one or more selected from the group consisting of these can be used.

The silane coupling agent is not particularly limited, but a trialkoxyalkylsilane is preferred. A trialkoxyalkylsilane is a compound in which three alkoxy groups and one alkyl group are bonded to a silicon atom, and the alkoxy group reacts with hydroxyl groups and the like on the powder surface to chemically modify the powder surface. In the trialkoxyalkylsilane, the alkoxy group is preferably an alkoxy group having 1 to 3 carbon atoms, such as methoxy, ethoxy, or propoxy. In addition, in the trialkoxyalkylsilane, the alkyl group is preferably an alkyl group having 6 to 18 carbon atoms, such as hexyl, octyl, decyl, or octadecyl. Examples of such trialkoxyalkylsilanes include trimethoxyhexylsilane, trimethoxyoctylsilane, trimethoxydecylsilane, trimethoxyoctadecylsilane, triethoxyhexylsilane, triethoxyoctylsilane (OTS), triethoxydecylsilane, and triethoxyoctadecylsilane. Among these, from the viewpoint of redispersibility of component (A) and the like, one or more selected from the group consisting of trimethoxyoctylsilane and triethoxyoctylsilane (OTS) are more preferred.

The organic titanate treatment agent includes alkyl titanates of long-chain carboxylic acid type, pyrophosphate type, phosphorous acid type, amino acid type, etc., and alkyl titanates having an alkyl group with 8 to 24 carbon atoms are preferred. Specific examples of the alkyl titanate include long-chain carboxylic acid type alkyl titanates such as isopropyl triisostearoyl titanate (ITT), isopropyl trioctanoyl titanate, isopropyl dimethacryl isostearoyl titanate, isopropyl isostearoyl diacrylic titanate, diisostearoyl ethylene titanate, etc., and examples of pyrophosphate type alkyl titanates include tetraisopropyl bis(dioctyl phosphite) titanate, tetraoctyl bis(ditridecyl phosphite) titanate, etc. Examples of the phosphorous-type alkyl titanates include isopropyl tri(dioctylpyrophosphate) titanate, bis(dioctylpyrophosphate)oxyacetate titanate, and bis(dioctylpyrophosphate)ethylene titanate. Examples of the amino acid-type alkyl titanates include isopropyl tri(N-amidoethyl aminoethyl) titanate. In the present invention, among these alkyl titanates, from the viewpoint of the redispersibility of component (A), etc., long-chain carboxylic acid-type alkyl titanates are preferred, and isopropyl triisostearoyl titanate (ITT) is more preferred.

Fatty acid treating agents include fatty acids and their metal salts, and among these, fatty acids with 12 to 18 carbon atoms are preferred from the standpoint of redispersibility of component (A), etc., and their salts include, for example, calcium, magnesium, zinc, aluminum, etc., with aluminum salts being preferred. Among these, stearic acid and its metal salts are particularly preferred.

Amino acid treating agents include, for example, proline, hydroxyproline, alanine, glycine, sarcosine, lysine, aspartic acid, glutamic acid, etc., and salts thereof.

The acylated amino acid treatment agent is not particularly limited, but the fatty acid constituting the acyl group is preferably a fatty acid having 6 to 23 carbon atoms, more preferably a fatty acid having 8 to 20 carbon atoms, and among these, stearoyl glutamic acid, lauroyl aspartic acid, dilauroyl glutamic acid lysine, and lauroyl lysine are particularly preferred.

As the hydrophobization treatment for component (C), from the viewpoint of redispersibility of component (A) etc., one or more treatments selected from methylpolysiloxane (dimethicone) treatment, triethoxyoctylsilane (OTS) treatment, isopropyltriisostearoyltitanate (ITT) treatment, stearic acid treatment, and lauroyllysine treatment are preferred.

The method of hydrophobization treatment in component (C) is not particularly limited, and can be produced by a commonly known method. For example, the hydrophobization treatment agent and powder particles to be treated are added to a solvent, stirred in a ball mill or the like, dried as necessary, washed with water, filtered repeatedly to remove impurities, and then dried and pulverized to obtain the desired hydrophobized powder. In addition, several types of compounds that are surface treatment agents can be surface-treated simultaneously, or one compound can be used for surface treatment beforehand, and then another compound can be used for surface treatment. The amount of hydrophobization treatment agent used for the metal oxide is not particularly limited, but from the viewpoint of redispersibility of component (A) and the like, for example, 5 to 40% is preferable, and 10 to 35% is more preferable.

The content of component (C) is not particularly limited, but from the viewpoint of sunscreen effect, it is preferably 0.5% or more, more preferably 1% or more, and even more preferably 3% or more. In addition, the content of component (C) is not particularly limited, but from the viewpoint of redispersibility of components (A) etc., it is preferably 30% or less, more preferably 25% or less, and even more preferably 20% or less.

In the present invention, a surfactant having an HLB of 16 or less can be further contained as component (D). By containing component (D), a higher effect can be obtained in terms of the redispersibility of components (A) and the like.

Here, the HLB (hydrophile-lipophile balance) in the present invention is an index showing the balance between hydrophilicity and lipophilicity, and is calculated by the following formula (1) proposed by Oda and Teramura et al.
HLB = "Inorganic value (IV) / Organic value (OV)" x 10 (Equation 1)
(See Yoshio Koda, "Organic Conceptual Diagram - Fundamentals and Applications", pages 11-17, Sankyo Publishing, 1984.)

The HLB of component (D) is preferably 10 or less from the viewpoint of sunscreen effect, more preferably 6 or less, and furthermore preferably 5 or less from the viewpoint of obtaining less stickiness and good usability, and further preferably 4.3 or less from the viewpoint of redispersibility of components (A) etc.

The surfactant is not particularly limited, and any of anionic, cationic, and nonionic surfactants can be used, but nonionic surfactants are preferred, such as fatty acid esters, alkyl ethers, and modified organopolysiloxanes. Among these, polyglycerin fatty acid esters, polyethylene glycol fatty acid esters, polyhydroxy fatty acids, polyhydroxy fatty acid polyethylene glycol esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ethers, polyoxyethylene alkenyl ethers, polyoxyalkylene-modified organopolysiloxanes, and polyoxyalkylene-alkyl co-modified organopolysiloxanes are preferred, and among these, from the viewpoint of redispersibility of component (A), etc., one or more selected from polyoxyethylene-modified organopolysiloxanes, polyhydroxystearic acid, dipolyhydroxystearic acid polyethylene glycol esters, polyoxyalkylene-modified organopolysiloxanes, and polyoxyalkylene-alkyl co-modified organopolysiloxanes are preferred.

The content of component (D) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more. In addition, the content of component (D) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 5% or less, more preferably 4% or less, and even more preferably 3% or less.

In the present invention, an organic spherical powder can be further contained as component (E). By containing component (E), the redispersibility of components (A) and the like can be improved.

The organic spherical powder of component (E) is not particularly limited, but specific examples include silicone powders such as polyethylene, polymethyl methacrylate, methyl methacrylate crosspolymer, polystyrene, nylon-12, polymethylsilsesquioxane, network silicone, crosslinked silicone, and composite powders of these, such as crosslinked silicone/network silicone block copolymers. When these silicone powders are expressed by INCI names (International Nomenclature Cosmetic Ingredient labeling names), examples include (dimethicone/vinyl dimethicone) crosspolymer, (vinyl dimethicone/methicone silsesquioxane) crosspolymer, (diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane) crosspolymer, and the like. Among these, from the viewpoint of redispersibility of component (A) and the like, one or more selected from the group consisting of polyethylene, (dimethicone/vinyl dimethicone) crosspolymer, (vinyl dimethicone/methicone silsesquioxane) crosspolymer, (diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane) crosspolymer, and polymethyl silsesquioxane are preferred.

The average particle size of component (E) is not particularly limited, but from the standpoint of redispersibility of components (A) etc., it is preferably 0.5 to 20 μm, and more preferably 1 to 10 μm.

Commercially available products of component (E) include, for example, KSP-100, 101, 102, 105, and 300 (manufactured by Shin-Etsu Chemical Co., Ltd.), Mipelon XM-220 and PM-200 (manufactured by Mitsui Chemicals, Inc.), Matsumoto Microsphere M-101 and M-305 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), and TOSPEAL 3000A (manufactured by Momentive Performance Materials Japan, Inc.).

The content of component (E) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 0.5% or more, and more preferably 1% or more. In addition, the content of component (E) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 20% or less, and more preferably 10% or less.

In the present invention, the composition may further contain, as component (F), one or more selected from the group consisting of propylene glycol dicaprate, alkyl benzoate, isononyl isononanoate, and phytosteryl oleate. By containing component (F), more excellent effects can be obtained in terms of the redispersibility of component (A) and the like. From the viewpoint of the redispersibility of component (A) and the like, it is preferable that component (F) is one or more selected from the group consisting of propylene glycol dicaprate, alkyl benzoate, and isononyl isononanoate.

The content of component (F) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 3% or more, and more preferably 5% or more. In addition, the content of component (F) is not particularly limited, but from the viewpoint of the redispersibility of components (A) and the like, it is preferably 40% or less, more preferably 35% or less, and even more preferably 30% or less.

In addition to the above-mentioned components, the oil-based composition of the present invention may contain components that are usually used in cosmetics, quasi-drugs, pharmaceuticals, etc., to the extent that the effects of the present invention are not impaired. That is, the oil-based composition of the present invention may contain water, surfactants, oils, gelling agents, powders, alcohols, water-soluble polymers, film-forming agents, resins, moisturizers, antibacterial agents, fragrances, deodorants, salts, chelating agents, UV absorbers, pH adjusters, cooling agents, plant extracts, vitamins, beauty ingredients, etc., other than the above-mentioned components.

The method for producing the oily composition of the present invention is not particularly limited, but may include production by mixing components (A) to (C) and other optional components. Dispersing equipment such as a disperser or a paddle mixer can be used as the mixing equipment.

The oil-based composition of the present invention is composed mainly of an oil agent, and the water content is preferably 1% or less, more preferably 0.5% or less, and particularly preferably 0.1% or less. The water content in the oil-based composition refers to the value measured by the normal pressure heating and drying method.

The oil-based composition of the present invention is preferably liquid at 25°C from the viewpoint of ease of application and ease of use, i.e., low stickiness. In the present invention, being liquid at 25°C means having fluidity at 25°C. From the viewpoint of ease of application and ease of use, i.e., low stickiness, the viscosity of the oil-based composition of the present invention is preferably 20,000 mPa·s or less, more preferably 10 to 15,000 mPa·s, particularly preferably 50 to 12,000 mPa·s, and most preferably 100 to 10,000 mPa·s. The viscosity here can be measured at 25°C using a B-type viscometer with rotor No. 2 or 3.

The oily composition of the present invention can be used in cosmetics, quasi-drugs, medicines, etc., but is not particularly limited thereto. Specifically, skin care cosmetics include beauty essences, lip balms, sunscreens, etc.; makeup cosmetics include foundations, makeup bases, blushers, eye shadows, lipsticks, lip glosses, etc.; and scalp or hair cosmetics include hair rinses, hair creams, hair styling products, etc. Examples of methods for using the composition include using it on hands, fingers, or cotton, using it by impregnating it into nonwoven fabric, or using it as a spray or aerosol.

The uses of the oil-based composition of the present invention are not particularly limited, but it can be suitably used, for example, as a sunscreen or antiperspirant cosmetic, and since it also has excellent water resistance, it can be used as a sunscreen and/or antiperspirant skin care cosmetic.

The present invention will be described in more detail below with reference to examples and comparative examples. Note that these examples do not limit the present invention in any way.

Examples and Comparative Examples: Antiperspirants Antiperspirants having the compositions shown in Tables 1 and 2 were prepared by the manufacturing methods described below, as Examples 1 to 28 and Comparative Examples 1 and 2. Each sample was evaluated for redispersibility, sunscreen effect, and non-stickiness according to the evaluation methods and criteria described below, and the results are shown in Tables 1 and 2.

(Production method)
A: Heat and mix ingredients 4 to 27, then cool to room temperature.
B: Components 1 to 3 and components 28 to 30 were mixed with A to obtain an antiperspirant.

[Evaluation method 1] Redispersibility Each sample was filled into a 60 ml resin bottle (diameter 4 cm), left to stand at 50°C for one month, and then shaken up and down. The number of shakes required for the antiperspirant ingredients such as aluminum potassium sulfate and the metal oxide aggregates to be uniformly dispersed was measured. Then, the redispersibility was evaluated according to the following evaluation criteria (a).

(a) Judgment criteria [Judgment]: [Evaluation]
⊚: Dispersed and homogeneous solution was obtained within 10 shakings. ◯: Dispersed and homogeneous solution was obtained within 11 to 30 shakings. ×: Not dispersed and not homogeneous solution was obtained even after 30 shakings.

[Evaluation method 2] Sunscreen effect Each sample was applied to a PMMA plate (HELIOPLATE HD6, manufactured by Labsphere) at 2 mg/ ^cm2 , and the sample was left to stand for 20 minutes. The SPF of the sample was measured using an SPF analyzer (UV-2000S, manufactured by Labsphere). Ten points on the plate were measured, and the average SPF value was calculated and judged in accordance with the following (B) judgment criteria.

(b) Judgment criteria [Judgment]: [Average SPF value]
◎: 25 or more ○: 15 or more but less than 25 ×: Less than 15

[Evaluation method 3] Non-stickiness Each sample was applied to the forearm by 20 expert evaluation panel members, and the level of stickiness 5 minutes after application was evaluated according to the following evaluation criteria (C). After that, the average score of all the panel members was evaluated according to the following evaluation criteria (D).
(C) Evaluation criteria [Score]: [Evaluation result]
5 points: Very good 4 points: Good 3 points: Average 2 points: Slightly poor 1 point: Poor (D) Judgment criteria [Judgment]: [Average score]
◎: 4.0 or more ○: 2.0 or more and less than 4.0 ×: Less than 2.0

As is clear from the results in Tables 1 and 2, Examples 1 to 28 were excellent in redispersibility, sunscreen effect, and non-stickiness.
In contrast, Comparative Example 1, which did not contain component (B), was not excellent in redispersibility, sunscreen effect, and non-stickiness.
Comparative Example 2, which did not contain component (C) but contained untreated zinc oxide, was not excellent in redispersibility, sunscreen effect, and non-stickiness.

Example 29: Oil-based antiperspirant sunscreen oil (ingredients) (%)
1. Cetyl 2-ethylhexanoate Remaining amount 2. Isopropyl myristate *12 5
3. Ethylhexyl methoxycinnamate 10
4. 2-[4-(diethylamino)-2-hydroxybenzoyl]
Benzoic acid hexyl ester 2
5. Dimethicone, aluminum hydroxide, titanium dioxide treated with hydrated silica 15
6. PEG-10 Dimethicone 2
7. Isododecane 5
8. Ethanol 15
9. (Dimethicone/vinyl dimethicone) crosspolymer 3
10. Potassium aluminum sulfate *13 4
*12 IPM-EX (manufactured by Nippon Surfactant Industries Co., Ltd.)
*13 Potassium aluminate granules (manufactured by Taimei Chemical Industry Co., Ltd.)
(Production method)
A: Heat and mix ingredients 1 to 4, then cool to room temperature.
B: Add ingredients 5 to 9 to A and mix.
C: Component 10 was added to and mixed with B to obtain an oil-based antiperspirant sunscreen oil.

The oil-based antiperspirant sunscreen oil of Example 29 had excellent redispersibility, sunscreen effect, and non-stickiness.

Example 30: Oil-based antiperspirant sunscreen oil

(Component) (%)
1. Cetyl 2-ethylhexanoate balance 2. Propylene glycol dicaprylate 8
3. Ethylhexyl methoxycinnamate 8
4. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}
-6-(4-methoxyphenyl)-(1,3,5)-triazine 3
5. Lauroyl lysine treated zinc oxide *14 15
6. PEG-12 Dimethicone 2
7. Isododecane 5
8. Ethanol 15
9. (Dimethicone/phenylvinyldimethicone) crosspolymer 3
10. Potassium aluminum sulfate (average particle size 3 μm) 4
*14 The amount of lauroyl lysine used for treatment was 20% relative to the zinc oxide content.
(Production method)
A: Heat and mix ingredients 1 to 4, then cool to room temperature.
B: Add ingredients 5 to 9 to A and mix.
C: Component 10 was added to and mixed with B to obtain an oil-based antiperspirant sunscreen oil.

The oil-based antiperspirant sunscreen oil of Example 30 had excellent redispersibility, sunscreen effect, and non-stickiness.

Example 31: Oil-based antiperspirant sunscreen oil

(Component) (%)
1. Cetyl 2-ethylhexanoate balance 2. Propylene glycol dicaprylate 8
3. Ethylhexyl methoxycinnamate 8
4. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}
-6-(4-methoxyphenyl)-(1,3,5)-triazine 3
5. Ethylhexyl triazine 1.5
6. Dimethicone-treated zinc oxide 15
7. PEG-10 Dimethicone 2
8. Isododecane 1.2
9. Ethanol 15
10. (Dimethicone/phenylvinyldimethicone) crosspolymer 3
11. Potassium aluminum sulfate (average particle size 10 μm) 2
12. Dried potassium aluminum sulfate (average particle size 10 μm) 1
13. Aluminum hydroxychloride (average particle size 5 nm) 1
(Production method)
A: Mix ingredients 1 to 5 and heat.
B: Add ingredients 6 to 10 to A and mix.
C: Components 11 to 13 were added to and mixed with B to obtain an oil-based antiperspirant sunscreen oil.

The oil-based antiperspirant sunscreen oil of Example 31 had excellent redispersibility, sunscreen effect, and non-stickiness.

Example 32: Beauty oil

(Component) (%)
1. Cetyl 2-ethylhexanoate balance 2. Propylene glycol dicaprate 8
3. Ethylhexyl methoxycinnamate 8
4. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}
-6-(4-methoxyphenyl)-(1,3,5)-triazine 3
5. Ethylhexyl triazine 1.5
6. Dimethicone-treated zinc oxide 15
7. PEG-10 Dimethicone 2
8. Isododecane 1.2
9. Ethanol 15
10. Astaxanthin 0.1
11. Aluminum hydroxychloride *15 4
*15 Aluminum hydroxychloride (Clariant Japan)
(Production method)
A: Mix ingredients 1 to 5 and heat.
B: Add ingredients 6 to 10 to A and mix.
C: Component 11 was added to and mixed with B to obtain a cosmetic oil.

The cosmetic oil of Example 32 had excellent redispersibility, sunscreen effect, and was non-sticky.

Example 33: Hair oil

(Component) (%)
1. Cetyl 2-ethylhexanoate balance 2. Propylene glycol dicaprate 8
3. Ethylhexyl methoxycinnamate 8
4. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}
-6-(4-methoxyphenyl)-(1,3,5)-triazine 3
5. Ethylhexyl triazine 1.5
6. Dimethicone-treated zinc oxide 15
7. PEG-10 Dimethicone 2
8. Isododecane 1.2
9. Ethanol 15
10. Astaxanthin 0.1
11. Dried potassium aluminum sulfate *16 4
*16 Thai Ace K20 (manufactured by Taimei Chemical Industry Co., Ltd.)
(Production method)
A: Mix ingredients 1 to 5 and heat.
B: Add ingredients 6 to 10 to A and mix.
C: Component 11 was added to and mixed with B to obtain a hair oil.

The hair oil of Example 33 had excellent redispersibility, sunscreen effect, and was non-sticky.

Example 34: Oil-based antiperspirant sunscreen

(Component) (%)
1. Cetyl 2-ethylhexanoate balance 2. Propylene glycol dicaprate 8
3. Ethylhexyl methoxycinnamate 8
4. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}
-6-(4-methoxyphenyl)-(1,3,5)-triazine 3
5. Inulin stearate *17 1.0
6. Dextrin palmitate *18 0.5
7. Dimethicone-treated zinc oxide 15
8. PEG-10 Dimethicone 2
9. Isododecane 1.2
10. Ethanol 15
11. Astaxanthin 0.1
12. Potassium aluminum sulfate (average particle size 1 nm) 4
*17 Leopard ISK2 (manufactured by Chiba Flour Mills)
*18 Leopard KL2 (manufactured by Chiba Flour Mills)
(Production method)
A: Mix ingredients 1 to 6 and heat.
B: Add ingredients 7 to 11 to A and mix.
C: Component 12 was added to and mixed with B to obtain an oil-based antiperspirant sunscreen oil.

The oil-based antiperspirant sunscreen oil of Example 34 had excellent redispersibility, sunscreen effect, and non-stickiness.

Example 35: Antiperspirant spray

(Component) (%)
＜Undiluted solution＞
1. Cetyl 2-ethylhexanoate 15
2. Ethylhexyl methoxycinnamate 16
3. Isopropyl isostearate 1
4. 2-Ethylhexyl palmitate 1
5. Stearic acid treated zinc oxide 18
6. Spherical silicic anhydride (average particle size 30 μm) 1.5
7. Ethanol 40
8. Sorbitan sesquiisostearate 1
9. Sorbitan sesquioleate 0.5
10. Potassium aluminum sulfate *13 6
<Propellant>
1. LPG 90
2. Nitrogen 5
3. Carbon dioxide 5
(Production method)
A: Mix ingredients 1 to 6.
B: Add ingredients 7 to 9 to A and mix.
C: Component 10 was added to and mixed with B to obtain a stock solution.
D: The concentrate of C was filled into an aerosol container, and 70 parts of a propellant were added per 30 parts of the concentrate to obtain an antiperspirant spray.

The antiperspirant spray of Example 35 had excellent redispersibility, sunscreen effect, and was non-sticky.

Claims (8)

The following components (A) to (C):
Component (A) is one or more selected from the group consisting of aluminum potassium sulfate, dry aluminum potassium sulfate, and aluminum hydroxychloride. Component (B) is an organic ultraviolet absorber. Component (C) is a hydrophobized metal oxide .
The oily composition is characterized in that the component (B) is one or more selected from the group consisting of ethylhexyl methoxycinnamate, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester, 4-tert-butyl-4'-methoxy-dibenzoylmethane, and 2,4-bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine. The oil-based composition according to claim 1, wherein the average particle size of component (A) is 10 nm to 50 μm. The oily composition according to claim 1 or 2 further contains a surfactant having an HLB of 16 or less as component (D). The oily composition according to any one of claims 1 to 3 further contains an organic spherical powder as component (E). The oily composition according to any one of claims 1 to 4, which is liquid at 25°C. The oily composition according to any one of claims 1 to 5 further contains, as component (F), one or more selected from the group consisting of propylene glycol dicaprate, alkyl benzoate, isononyl isononanoate, and phytosteryl oleate. The oily composition according to any one of claims 1 to 6, wherein component (B) is ethylhexyl methoxycinnamate. The oily composition according to claim 7, wherein the mass ratio of the component (A) to the ethylhexyl methoxycinnamate (A)/(ethylhexyl methoxycinnamate) is 0.01 to 8.