Composition

Abstract

Provided is a composition which exhibits good dispersibility of ultraviolet scattering agent particles and is not susceptible to caking. A composition, in particular a cosmetic composition, in which ultraviolet scattering agent particles are dispersed in a mixture of an oily medium and polyhydroxystearic acid, and which satisfies the following conditions (I) to (III): condition (I): in the composition, the oily medium contains a polar oil and a silicone oil, or a polar oil, a hydrocarbon oil, and a silicone oil, with the total amount of the polar oil, the hydrocarbon oil, and the silicone oil being 100 parts by mass per 100 parts by mass of the oily medium; condition (II): when calculated by removing the volatile component from the oily medium, the amount of the ultraviolet light scattering agent particles is 10 parts by mass or more with respect to 100 parts by mass of the total oily medium from which the volatile component has been removed, the amount of the silicone oil is 55 parts by mass or more, and the amount of the ultraviolet light scattering agent particles is 10 parts by mass or more with respect to 100 parts by mass of the total oily medium from which the volatile component has been removed. Condition (III): the mass ratio of the polyhydroxystearic acid to the ultraviolet scattering agent particles (mass of the polyhydroxystearic acid / mass of the ultraviolet scattering agent particles) is 0.02 or more.

Description

Technical Field

[0001] The present invention relates to a composition, particularly a cosmetic composition, and more particularly a sunscreen cosmetic composition, in which ultraviolet scattering agent particles are dispersed in a mixture of an oily medium and polyhydroxystearic acid. Background Art

[0002] In the field of sunscreen cosmetics, ultraviolet scattering agent particles are mainly used as ultraviolet protection agents. Such ultraviolet scattering agent particles are often dispersed in an oily medium and mixed. As the oily medium, generally speaking, it is known to use polar oils such as ester oils, ultraviolet absorbers, hydrocarbon oils, silicone oils, or combinations thereof.

[0003] In cosmetics such as sunscreen compositions, in order to improve the dispersibility of ultraviolet scattering agent particles, the composition of the cosmetics is generally adjusted.

[0004] For example, Patent Document 1 discloses a water-in-oil emulsified cosmetic in which the dispersibility of the fine-particle metal oxide in the oil phase is improved by using a fine-particle metal oxide surface-treated with a trialkoxyalkylsilane and further using polyhydroxystearic acid as a dispersant when dispersing fine-particle metal oxide in an oil phase containing a non-silicone oil agent, and the aqueous component is emulsified with a specific silicone surfactant, thereby having excellent dispersibility and stability over time of the fine-particle metal oxide, no stickiness, and good spreading usability. More specifically, the cosmetic of Patent Document 1 is a water-in-oil emulsified cosmetic characterized by mixing the following components (A) to (E): (A) fine-particle metal oxide surface-treated with a trialkoxyalkylsilane, (B) polyhydroxystearic acid, (C) a non-silicone oil agent, (D) polyoxyalkylene / alkyl co-modified silicone of HLB 2 to 7 and / or polyglycerol / alkyl co-modified silicone of HLB 2 to 7, and (E) an aqueous component.

[0005] In addition, Patent Document 2 discloses an oil dispersion that can disperse zinc oxide or titanium oxide and ethylhexyl methoxycinnamate in a system without causing aggregation, which would occur if mixed in the past, and an emulsified composition using the oil dispersion. More specifically, the oil dispersion of Patent Document 2 is an oil dispersion characterized by containing zinc oxide or titanium oxide, ethylhexyl methoxycinnamate, and polyhydroxy fatty acid.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2013-071931

[0009] Patent Document 2: Japanese Patent Application Publication No. 2016-222602 Summary of the invention

[0010] Problems to be solved by the invention

[0011] However, in compositions such as sunscreen cosmetics, even if the dispersibility of ultraviolet scattering agent particles is improved, ultraviolet scattering agent particles that have settled due to standing still or the like may agglomerate with each other and fail to return to the original dispersed state even when shaken (i.e., particle agglomeration).

[0012] The present invention aims to improve the above situation, and an object of the present invention is to provide a composition in which ultraviolet scattering agent particles have good dispersibility and are less likely to agglomerate.

[0013] Means for solving problems

[0014] The present invention for achieving the above-mentioned object is as follows.

[0015] <Scheme 1>

[0016] A composition, particularly a cosmetic composition, is a composition in which ultraviolet scattering agent particles are dispersed in a mixture of an oily medium and polyhydroxystearic acid, and the composition satisfies the following conditions (I) to (III):

[0017] Condition(I)

[0018] In the above composition,

[0019] The oily medium contains polar oil and silicone oil, or contains polar oil, hydrocarbon oil and silicone oil.

[0020] The silicone oil is 55 parts by mass or more relative to 100 parts by mass of the total oily medium, and

[0021] The amount of the ultraviolet scattering agent particles is 10 parts by mass or more relative to 100 parts by mass of the total of the oily medium.

[0022] Condition (II)

[0023] When the volatile components in the above oily medium are removed and the calculation is performed,

[0024] The silicone oil after removing the volatile components is 40 parts by mass or less relative to 100 parts by mass of the total oily medium after removing the volatile components, and

[0025] Condition (III)

[0026] The mass ratio of the polyhydroxystearic acid to the ultraviolet scattering agent particles (mass of the polyhydroxystearic acid / mass of the ultraviolet scattering agent particles) is 0.02 or more.

[0027] <Scheme 2>

[0028] The composition according to Scheme 1, in the above condition (I), satisfies:

[0029] In the above composition,

[0030] The silicone oil is contained in an amount of 55 parts by mass or more and 83 parts by mass or less relative to 100 parts by mass of the total of the oily medium.

[0031] <Scheme 3>

[0032] The composition according to scheme 2, in the above condition (I),

[0033] In the above composition,

[0034] The polar oil is 10 parts by mass or more relative to 100 parts by mass of the total oil medium.

[0035] The hydrocarbon oil is 20 parts by mass or less relative to 100 parts by mass of the total oily medium, and

[0036] In the above condition (II),

[0037] When the volatile components in the above oily medium are removed and the calculation is performed,

[0038] The polar oil after the volatile components are removed is 20 parts by mass or more relative to 100 parts by mass of the total oil medium after the volatile components are removed.

[0039] The hydrocarbon oil after the volatile components are removed is 70 parts by mass or less relative to 100 parts by mass of the total oily medium after the volatile components are removed, and

[0040] The silicone oil after removing the volatile components is 40 parts by mass or less relative to 100 parts by mass of the total oil medium after removing the volatile components.

[0041] <Scheme 4>

[0042] The composition according to any one of embodiments 1 to 3, wherein in the above condition (II),

[0043] When the volatile components in the above oily medium are removed and the calculation is performed,

[0044] The polyhydroxystearic acid is contained in an amount of 1.0 part by mass or more and 30 parts by mass or less relative to 100 parts by mass of the total of the oil medium from which the volatile components are removed and the polyhydroxystearic acid.

[0045] <Scheme 5>

[0046] The composition according to any one of aspects 1 to 4, wherein the ultraviolet scattering agent particles are at least one selected from titanium oxide, zinc oxide, iron oxide, and cerium oxide.

[0047] <Scheme 6>

[0048] The composition according to any one of aspects 1 to 5, wherein the silicone oil comprises a linear silicone oil.

[0049] <Scheme 7>

[0050] The composition according to any one of aspects 1 to 6, wherein the polar oil does not contain a UV absorber.

[0051] <Scheme 8>

[0052] The composition according to any one of aspects 1 to 7, which is an oily cosmetic composition.

[0053] <Scheme 9>

[0054] The composition according to any one of embodiments 1 to 7, which is a water-in-oil emulsified cosmetic composition, and

[0055] The water content is less than 30% by mass.

[0056] <Scheme 10>

[0057] The composition according to any one of aspects 1 to 7, which is an oil-in-water emulsified cosmetic composition.

[0058] <Scheme 11>

[0059] The composition according to any one of aspects 1 to 10, which is a sunscreen cosmetic composition.

[0060] Effects of the Invention

[0061] According to the present invention, it is possible to provide a composition in which ultraviolet scattering agent particles have good dispersibility and are less likely to agglomerate.

[0062] In addition, the ultraviolet scattering agent particles of the composition of the present invention have good dispersibility, and after being applied to the skin, the whitening of the ultraviolet scattering agent particles is suppressed, the transparency is high, and the ultraviolet protection effect is good. In addition, although the ultraviolet scattering agent particles of the composition of the present invention have good dispersibility, they are not easy to agglomerate. Therefore, the composition of the present invention is suitable as a cosmetic composition, especially a sunscreen cosmetic composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 This is a graph showing the change in absorbance of the composition of Example 14 in the UVB region (290 nm) over time.

[0064] Figure 2 This is a graph showing the change over time in the visible light transmittance at 490 nm of the composition of Example 14. DETAILED DESCRIPTION

[0065] Hereinafter, embodiments of the present invention will be described in detail. In addition, the present invention is not limited to the following embodiments, and can be implemented with various modifications within the scope of the gist of the invention.

[0066] Composition

[0067] The composition of the present invention is a composition, particularly a cosmetic composition, in which ultraviolet scattering agent particles are dispersed in a mixture of an oily medium and polyhydroxystearic acid, and the composition satisfies the following conditions (I) to (III):

[0068] Condition(I)

[0069] In the composition,

[0070] The oily medium contains polar oil and silicone oil, or contains polar oil, hydrocarbon oil and silicone oil.

[0071] The silicone oil is 55 parts by mass or more relative to 100 parts by mass of the total oily medium, and

[0072] The amount of the ultraviolet scattering agent particles is 10 parts by mass or more relative to 100 parts by mass of the total oily medium.

[0073] Condition (II)

[0074] When the calculation is performed by removing the volatile components in the oily medium,

[0075] The silicone oil after volatile components are removed is 40 parts by mass or less relative to 100 parts by mass of the total oily medium after volatile components are removed, and

[0076] Condition (III)

[0077] The mass ratio of the polyhydroxystearic acid to the ultraviolet scattering agent particles (mass of the polyhydroxystearic acid / mass of the ultraviolet scattering agent particles) is 0.02 or more.

[0078] According to the intensive studies conducted by the present inventors, it has been found that, in a composition in which ultraviolet scattering agent particles are dispersed, although the dispersibility of the ultraviolet scattering agent particles can be improved, agglomeration occurs at a certain dispersion state.

[0079] In contrast, the composition of the present invention satisfies the above conditions (I) to (III), so that the dispersibility of the ultraviolet scattering agent particles is not excessively improved before use (i.e., during storage), thereby suppressing the caking phenomenon. In addition, after the composition is applied to the skin, a part of the contained oily medium is volatilized to change the composition, thereby improving the dispersibility of the ultraviolet scattering agent particles. As a result, after the composition of the present invention is applied to the skin, the dispersibility of the ultraviolet scattering agent particles is good, thereby suppressing the false white caused by the aggregation of the ultraviolet scattering agent particles, and the transparency is high, and the ultraviolet protection effect is good, and it is not easy to agglomerate.

[0080] 〈Oil-based medium〉

[0081] The composition of the present invention comprises an oily medium.

[0082] The oily medium of the present invention contains polar oil and silicone oil, or contains polar oil, hydrocarbon oil and silicone oil. That is, the oily medium of the present invention must contain polar oil and silicone oil, but may or may not contain hydrocarbon oil. Each oily medium is described in detail below.

[0083] (Polar Oil)

[0084] The composition of the present invention contains polar oil. Here, the so-called "polar oil" refers to an oil with high polarity among the oils that can be used in cosmetics, except silicone oil, and refers to, for example, an oil with an IOB value of 0.10 or more, 0.11 or more, 0.12 or more, or 0.13 or more. In addition, the IOB value of the polar oil involved in the present invention can be below 0.50, below 0.45, or below 0.40. In addition, the so-called IOB value is an abbreviation of Inorganic / Organic Balance, which is a value indicating the ratio of the inorganic value to the organic value, and becomes an indicator indicating the degree of polarity of an organic compound. The IOB value is specifically expressed as IOB value = inorganic value / organic value. Regarding the "inorganic value" and "organic value", for example, the "inorganic value" corresponding to various atoms or functional groups is set, such as the "organic value" of 1 carbon atom in a molecule is 20, and the "inorganic value" of 1 hydroxyl group is 100, and the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound are accumulated, so that the IOB value of the organic compound can be calculated (see, for example, Yoshio Koda, "Organic Concept Map - Basics and Applications", pp. 11-17, Sankyo Publishing, published in 1984).

[0085] In the composition of the present invention, as the polar oil, a volatile polar oil, a nonvolatile polar oil, or a mixture thereof may be used. In the case of polar oils used in cosmetics, most of them are nonvolatile.

[0086] In the present invention, the term "volatility" of an oily medium means that the volatile components are more than 20% when the oily medium is left at 30°C for 120 minutes under atmospheric pressure. In the present invention, the term "non-volatility" of an oily medium means that the volatile components are less than 20% when the oily medium is left at 30°C for 120 minutes under atmospheric pressure.

[0087] In the present invention, the volatility can be evaluated by the following method. 2 mg / cm 2 The weight of the coating was measured on a precision balance before and after standing at 30° C. for 120 minutes. The amount of oil lost due to volatilization was calculated from the difference in weight before and after standing for 120 minutes, and the ratio (%) to the coating weight was evaluated.

[0088] In the composition of the present invention, the content of the polar oil is not particularly limited, but from the viewpoint of the dispersibility of the ultraviolet scattering agent particles, the polar oil can be, for example, 10 parts by mass or more relative to a total of 100 parts by mass of the oily medium. More specifically, in the composition of the present invention, the polar oil can be 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more, or 30 parts by mass or more relative to a total of 100 parts by mass of the oily medium, and can also be 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less.

[0089] Furthermore, when the calculation is performed after removing the volatile components in the oily medium, the polar oil after removing the volatile components may be 20 parts by mass or more, 25 parts by mass or more, 30 parts by mass or more, 35 parts by mass or more, 45 parts by mass or more, 50 parts by mass or more, 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, 70 parts by mass or more, 75 parts by mass or more, 80 parts by mass or more, 85 parts by mass or more, 90 parts by mass or more, 95 parts by mass or more, or 100 parts by mass relative to a total of 100 parts by mass of the oily medium after removing the volatile components (that is, the entire oily medium after removing the volatile components is the polar oil after removing the volatile components).

[0090] In the present invention, the phrase "calculated by excluding volatile components in the oily medium" is considered to correspond to the fact that, after the composition of the present invention is applied to the skin, volatile components contained in the oily medium volatilize and the composition of the oily medium changes.

[0091] In the present invention, the polar oil may contain, for example, an ester oil, a UV absorber, or a mixture thereof. However, from the viewpoint of obtaining a non-sticky feel during use, the polar oil preferably does not contain a UV absorber.

[0092] ·Ester oil

[0093] In the present invention, specific examples of the ester oil that can be used as the polar oil include tripropylene glycol dipivalate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyl octanoate, cetyl lactate, myristyl lactate, acetylated caprylate, Hair fat, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, cetyl ethylhexanoate, glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, di-2-heptyl undecanoate glyceryl, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate The present invention also includes, but is not limited to, alkylene, pentaerythritol tetra-2-ethylhexanoate, triisooctanoin (tri-2-ethylhexanoin), trioctanoin, triisopalmitin, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, trimyristin, tri-2-heptylundecanoic acid glyceryl, castor oil fatty acid methyl ester, oleyl oleate, acetylated glyceryl, 2-heptylundecanoic acid, diisobutyl adipate, 2-octyldodecyl N-lauroyl-L-glutamate, di-2-heptylundecanoic acid, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

[0094] In the present invention, the amount of ester oil contained in the polar oil can be, for example, 50 parts by mass or more, 60 parts by mass or more, 70 parts by mass or more, 80 parts by mass or more, 90 parts by mass or more, or 100 parts by mass (that is, all polar oils are ester oils) relative to 100 parts by mass of the total polar oil.

[0095] UV absorber

[0096] In the present invention, specific examples of the ultraviolet absorber include benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, o-aminobenzoyl derivatives, imidazoline derivatives, benzylidene malonate derivatives, 4,4-diarylbutadiene derivatives, etc., but are not limited to these.

[0097] The polar oil of the present invention preferably does not contain a UV absorber, but when containing a UV absorber, its content may be, for example, 0.05 parts by mass or more, 0.1 parts by mass or more, or 0.5 parts by mass or more, and may be 50 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, or 1.0 parts by mass or less, based on 100 parts by mass of the total of the polar oil.

[0098] (Silicone oil)

[0099] The composition of the present invention contains silicone oil. Here, the term "silicone oil" refers to an oil component having a main skeleton formed of siloxane bonds among oil components that can be used in cosmetics.

[0100] In the composition of the present invention, as the silicone oil, a volatile silicone oil, a nonvolatile silicone oil, or a mixture thereof may be used. From the viewpoint of improving the effects of the present invention, the composition of the present invention preferably contains a volatile silicone oil.

[0101] In the composition of the present invention, for example, from the viewpoint of improving caking resistance, the silicone oil is 55 parts by mass or more relative to a total of 100 parts by mass of the oily medium. More specifically, the silicone oil may be 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, or 70 parts by mass or more, and may be 83 parts by mass or less, 80 parts by mass or less, 75 parts by mass or less, 70 parts by mass or less, 65 parts by mass or less, or 60 parts by mass or less relative to a total of 100 parts by mass of the oily medium.

[0102] Furthermore, when the volatile components in the oily medium are removed and calculated, the silicone oil after the volatile components are removed may be 40 parts by mass or less, 35 parts by mass or less, 30 parts by mass or less, 25 parts by mass or less, 20 parts by mass or less, 15 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, 1.0 parts by mass or less, or 0 parts by mass (that is, all silicone oils are volatile), or may be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 5.0 parts by mass or more, or 10 parts by mass or more. It is preferred that the content of the silicone oil is within the above range when the volatile components in the oily medium are removed and calculated from the viewpoint that the dispersibility of the ultraviolet scattering agent particles is improved after the composition of the present invention is applied to the skin.

[0103] In the present invention, the silicone oil may be a non-cyclic silicone oil (ie, a chain silicone oil, preferably a linear silicone oil) or a cyclic silicone oil.

[0104] In the present invention, specific examples of silicone oil include, but are not limited to, chain silicone oils such as dimethicone, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and mixtures of two or more thereof.

[0105] (Hydrocarbon Oil)

[0106] The composition of the present invention may optionally contain hydrocarbon oil. Here, "hydrocarbon oil" refers to hydrocarbon oil other than polar oil. From the viewpoint of improving the compatibility between polar oil and silicone oil, the composition of the present invention preferably contains hydrocarbon oil.

[0107] In the present invention, the hydrocarbon oil may be a volatile hydrocarbon oil, a non-volatile hydrocarbon oil, or a mixture thereof. From the viewpoint of improving the effects of the present invention, when the composition of the present invention contains a hydrocarbon oil, it preferably contains a volatile hydrocarbon oil.

[0108] In the composition of the present invention, when a hydrocarbon oil is contained, the amount of the hydrocarbon oil may be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 2.0 parts by mass or more, 3.0 parts by mass or more, 4.0 parts by mass or more, 5.0 parts by mass or more, 6.0 parts by mass or more, 7.0 parts by mass or more, or 8.0 parts by mass or more, and may be 20 parts by mass or less, 19 parts by mass or less, 18 parts by mass or less, 17 parts by mass or less, 16 parts by mass or less, 15 parts by mass or less, or 14 parts by mass or less, relative to 100 parts by mass of the total oily medium.

[0109] Furthermore, in the composition of the present invention, when a hydrocarbon oil is contained, when the volatile components in the oily medium are removed and calculated, the hydrocarbon oil after volatile components are removed may be 70 parts by mass or less, 60 parts by mass or less, 50 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 5.0 parts by mass or less, 1.0 parts by mass or less, or 0 parts by mass (that is, all the hydrocarbon oil is volatile), and may also be 0.1 parts by mass or more, 0.5 parts by mass or more, 1.0 parts by mass or more, 5.0 parts by mass or more, or 10 parts by mass or more.

[0110] In the present invention, specific examples of hydrocarbon oils include, but are not limited to, decane, dodecane, isododecane, isohexadecane, undecane, tridecane, liquid paraffin, olefin oligomers, squalane, squalene, paraffin, and mixtures of two or more thereof.

[0111] 〈Polyhydroxystearic acid〉

[0112] The composition of the present invention comprises polyhydroxystearic acid.

[0113] Polyhydroxystearic acid mainly has the effect of making ultraviolet scattering agent particles uniformly dispersed in oily media. Polyhydroxystearic acid is a compound that forms an ester bond through hydroxystearic acid and is oligomerized. As commercially available products, for example, HS Oligomer 600 (manufactured by Toyokoku Oil Refining Co., Ltd.) and SARACOS HS-6C (manufactured by Nissin OILIO Co., Ltd.) are sold, and these can be used. In addition, the degree of polymerization of polyhydroxystearic acid is not particularly limited, and can be, for example, 4 to 8.

[0114] In the composition of the present invention, the mass ratio of polyhydroxystearic acid to ultraviolet scattering agent particles (mass of polyhydroxystearic acid / mass of ultraviolet scattering agent particles) is 0.02 or more. Here, the mass ratio of polyhydroxystearic acid to ultraviolet scattering agent particles is 0.02 or more, which is preferred from the viewpoint of dispersion effect. More specifically, in the composition of the present invention, the mass ratio of polyhydroxystearic acid to ultraviolet scattering agent particles can be, for example, 0.02 or more, 0.04 or more, 0.06 or more, 0.08 or more, 0.10 or more, 0.11 or more, 0.12 or more, 0.13 or more, 0.14 or more, 0.15 or more, 0.16 or more, 0.17 or more, 0.18 or more, 0.19 or more, or 0.20 or more, and can be 0.50 or less, 0.40 or less, or 0.30 or less.

[0115] In addition, when the volatile components in the oily medium are removed and calculated, the polyhydroxystearic acid may be, for example, 1.0 mass parts or more, 1.5 mass parts or more, 2.0 mass parts or more, 2.5 mass parts or more, 3.0 mass parts or more, 3.5 mass parts or more, 4.0 mass parts or more, 4.5 mass parts or more, 5.0 mass parts or more, 5.5 mass parts or more, 6.0 mass parts or more, 6.5 mass parts or more, 7.0 mass parts or more, 7.5 mass parts or more, 8.0 mass parts or more, 8.5 mass parts or more, 9.0 mass parts or more, 9.5 mass parts or more, or 10 mass parts or more, and may be 30 mass parts or less, 25 mass parts or less, 20 mass parts or less, 15 mass parts or less, 14 mass parts or less, 13 mass parts or less, 12 mass parts or less, 11 mass parts or less, or 10 mass parts or less.

[0116] 〈Ultraviolet scattering agent particles〉

[0117] In the composition of the present invention, the ultraviolet scattering agent particles are dispersed in a mixture of an oily medium and polyhydroxystearic acid. More specifically, it is believed that by forming a state in which polyhydroxystearic acid is adsorbed / oriented at the interface between the ultraviolet scattering agent and the oily medium, the inter-particle interaction between the ultraviolet scattering agent particles in the oily medium is controlled, thereby improving the dispersibility and caking resistance of the ultraviolet scattering agent particles.

[0118] The amount of the ultraviolet scattering agent particles relative to a total of 100 parts by mass of the oily medium is 10 parts by mass or more. From the viewpoint of obtaining a higher SPF, the amount of the ultraviolet scattering agent particles relative to a total of 100 parts by mass of the oily medium may be 10 parts by mass or more, 20 parts by mass or more, or 25 parts by mass or more. In addition, the upper limit of the amount of the ultraviolet scattering agent particles dispersed in the oily medium is not particularly limited, for example, the amount of the ultraviolet scattering agent particles relative to a total of 100 parts by mass of the oily medium may be 200 parts by mass or less, 100 parts by mass or less, 50 parts by mass or less, or 30 parts by mass or less.

[0119] In the present invention, the ultraviolet scattering agent particles are not particularly limited as long as they have an ultraviolet protection effect, and may be, for example, at least one selected from titanium oxide, zinc oxide, iron oxide, and cerium oxide.

[0120] The ultraviolet scattering agent particles can be hydrophobized and can be untreated. Here, hydrophobized treatment can be carried out as long as the known surface treatment agent hydrophobized is used, for example, fluorine compound treatment, organosilicon treatment, silicone resin treatment, pendant treatment (pendant treatment), silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, dextrin fatty acid ester treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, silazane compound treatment etc.. In these treatments, from the viewpoints such as dispersion stability, it is preferably to use the treatment of organosilicon or silicone resin, the treatment of silane compound or silazane compound, the metal soap treatment of stearic acid / aluminum hydroxide etc.

[0121] The average primary particle size of the ultraviolet scattering agent particles is not particularly limited, and can be, for example, 5 nm or more, 10 nm or more, or 15 nm or more, or 200 nm or less, 100 nm or less, or 50 nm or less. In addition, the "average primary particle size" can be obtained as the projected area equivalent circle diameter of the primary particles in the TEM image.

[0122] The shape of the ultraviolet scattering agent particles is not particularly limited, and examples thereof include spherical, plate-like, rod-like, spindle-like, needle-like, and irregular shapes.

[0123] 《Method for producing the composition》

[0124] The method for producing the composition of the present invention is not particularly limited, and the composition of the present invention can be produced by mixing the above-mentioned components and dispersing the ultraviolet scattering agent particles by a known method. As a dispersing device, for example, a medium-type dispersing device such as a bead mill, a sand mill, a ball mill, or a paint shaker, a high-speed stirrer such as a homogenizer or a disperser, a high-pressure disperser, or a medium-free dispersing device such as an ultrasonic disperser can be cited. Among bead mills, there are horizontal and vertical types, and either type is acceptable. In general, a dispersion composition with good storage stability can be obtained when the temperature of the dispersion during dispersion is low. For example, it can be dispersed in a manner such that the temperature of the dispersion becomes 10°C to 40°C.

[0125] 《Makeup Materials》

[0126] The composition of the present invention can be suitably used as a cosmetic or a raw material thereof. That is, the present invention provides a cosmetic composition, more particularly a sunscreen cosmetic composition.

[0127] The form of the cosmetic composition of the present invention is not particularly limited. Therefore, the cosmetic composition of the present invention may be an oil-in-water emulsified cosmetic composition, a water-in-oil emulsified cosmetic composition, an oil-based oily cosmetic composition, or the like.

[0128] For example, the composition of the present invention may further contain water when it is a water-in-oil emulsified cosmetic composition. In this case, the content of water is not particularly limited, and relative to the entire composition, for example, it may be 1.0% by mass or more, 5.0% by mass or more, or 10% by mass or more, and may be less than 30% by mass, 25% by mass or less, 20% by mass or less, or 10% by mass or less.

[0129] Furthermore, the cosmetic composition of the present invention may further contain, in addition to the above-mentioned components, any aqueous components other than water that can be used in the field of cosmetics, and other components.

[0130] As aqueous components other than water, for example, monohydric alcohols such as ethanol, polyols such as butanediol, dipropylene glycol, propylene glycol, pentanediol, hexanediol, and glycerol, polyalkylene glycols such as polyethylene glycol and polypropylene glycol or copolymers thereof, inorganic salts such as sodium chloride and magnesium chloride, or mixtures thereof may be cited, but the present invention is not limited to these.

[0131] The cosmetic composition of the present invention may further include other ingredients such as surfactants, humectants, higher alcohols, metal ion blocking agents, natural and synthetic polymers, water-soluble and oil-soluble polymers, various extracts, colorants such as organic dyes, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, cooling agents, antiperspirants, bactericides, skin activators, other agents, and various powders, but are not limited to these.

[0132] Examples of the surfactant include lipophilic nonionic surfactants and hydrophilic nonionic surfactants.

[0133] Here, the lipophilic nonionic surfactant is not particularly limited, and examples thereof include sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan sesquiisostearate, sorbitan trioleate, sorbitan diglycerol penta-2-ethylhexyl sorbitan ester, sorbitan diglycerol tetra-2-ethylhexyl sorbitan ester, such as sorbitan fatty acid esters, cottonseed oil fatty acid glyceryl monoester, glyceryl monoerucate, glyceryl sesquioleate, glyceryl monostearate, α,α′-oleyl pyroglutamic acid glyceryl, glyceryl monostearate malate, such as glycerol polyglycerol fatty acids, propylene glycol monostearate, such as propylene glycol fatty acid esters, hardened castor oil derivatives, and glycerol alkyl ethers.

[0134] The hydrophilic nonionic surfactant is not particularly limited, and examples thereof include POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, and POE sorbitan tetraoleate, POE sorbitan monolaurate, POE sorbitan monooleate, POE sorbitan pentaoleate, and POE sorbitan monostearate, POE sorbitan fatty acid esters such as POE sorbitan monostearate, POE glycerol monostearate, POE glycerol monoisostearate, and POE sorbitan monoisostearate. POE fatty acid esters such as POE triisostearate, POE monooleate, POE distearate, POE monodioleate, ethylene glycol stearate (シテアリンエチレングコール) and the like, POE lauryl ether, POE oleyl ether, POE stearyl ether, POE behenyl ether, POE 2-octyldodecyl ether, POE cholestanol ether and the like, POE octylphenyl ether, POE nonylphenyl ether, POE dinonylphenyl ether and the like POE / POP alkyl ethers, POE / POP alkyl ethers such as POE / POP alkyl phenyl ethers, ... OE hardened castor oil monopyroglutamic acid monoisostearate diester, POE hardened castor oil derivatives such as POE hardened castor oil maleic acid, POE beeswax / lanolin derivatives such as POE sorbitol beeswax, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide and other alkanolamides, POE propylene glycol fatty acid esters, POE alkylamines, POE fatty acid amides, sucrose fatty acid esters, POE nonylphenyl formaldehyde condensates, alkyl ethoxydimethylamine oxides, and trioleyl phosphoric acid, etc.

[0135] As other surfactants, anionic surfactants such as fatty acid soaps, higher alkyl sulfate ester salts, POE lauryl sulfate triethanolamine, and alkyl ether sulfate ester salts, cationic surfactants such as alkyl trimethyl ammonium salts, alkyl pyridinium salts, alkyl quaternary ammonium salts, alkyl dimethyl benzyl ammonium salts, alkyl amine salts, and polyamine fatty acid derivatives, and amphoteric surfactants such as imidazoline-based amphoteric surfactants and betaine-based surfactants can be mixed within the range where there are no problems with stability and skin irritation.

[0136] The moisturizing agent is not particularly limited, and examples thereof include xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucin sulfate, calonic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salts, dl-pyrrolidone formate, short-chain soluble collagen, diglycerol (EO) PO adduct, smilax glabra extract, Achillea millefolium extract, and sweet clover extract.

[0137] The higher alcohol is not particularly limited, and examples thereof include straight-chain alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, and a mixture of cetostearyl alcohol and the like; branched-chain alcohols such as monostearyl glyceryl ether (baty alcohol), 2-decyltetradecynyl alcohol, lanolin alcohol, cholesterol, phytosterols, hexyldodecanol, isostearyl alcohol, and octyldodecanol; and the like.

[0138] The metal ion blocking agent is not particularly limited, and examples thereof include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, and ethylenediaminetetraacetic acid.

[0139] The natural water-soluble polymer is not particularly limited, and examples thereof include gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seeds (quinces), alginate (brown algae extract), starch (rice, corn, potato, wheat), glycyrrhizic acid and other plant polymers, xanthan gum, dextran, succinylglucan, pullulan and other microbial polymers, collagen, casein, albumin, gelatin and other animal polymers, etc.

[0140] The semi-synthetic water-soluble polymer is not particularly limited, and examples thereof include starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, cellulose-based polymers such as methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, sodium carboxymethyl cellulose (CMC), crystalline cellulose, and cellulose powder, and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0141] The synthetic water-soluble polymer is not particularly limited, and examples thereof include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, and polyvinyl pyrrolidone, polyoxyethylene polymers such as polyethylene glycol 20,000, 40,000, and 60,000, polyoxyethylene-polyoxypropylene copolymer polymers, acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylamide, polyglycerol, polyethyleneimine, cationic polymers, carboxyvinyl polymers, alkyl-modified carboxyvinyl polymers, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymers, (sodium acrylic acid / sodium acryloyldimethyltaurate) copolymers, (ammonium acryloyldimethyltaurate / vinyl pyrrolidone) copolymers, and (ammonium acryloyldimethyltaurate methacrylate polyoxyethylene behenyl ether-25) crosslinked polymers.

[0142] The inorganic water-soluble polymer is not particularly limited, and examples thereof include bentonite, AlMg silicate (Biugam), raponite, hectorite, and silicic anhydride.

[0143] The other drug ingredients are not particularly limited, and examples thereof include vitamins such as vitamin A oil, retinol, retinyl palmitate, inositol, pyridoxine hydrochloride, benzyl nicotinate, niacinamide, DL-α-tocopheryl nicotinate, magnesium ascorbyl phosphate, 2-O-α-D-pyranosyl-L-ascorbic acid, vitamin D2 (ergocalciferol), dl-α-tocopherol, dl-α-tocopheryl acetate, pantothenic acid, and biotin; hormones such as estradiol and ethinyl estradiol; amino acids such as arginine, aspartic acid, cystine, cysteine, methionine, serine, leucine, and tryptophan; anti-inflammatory agents such as allantoin and azulene, and whitening agents such as arbutin; astringents such as tannic acid; cooling agents such as L-menthol and camphor, sulfur, lysozyme chloride, and pyridoxine chloride.

[0144] The various extracts are not particularly limited, and examples thereof include Houttuynia cordata extract, Phellodendron chinense extract, Sweet Clover extract, Sesame sesame extract, Licorice extract, Peony extract, Soapwort extract, Luffa extract, Cinchona extract, Saxifraga extract, Sophora flavescens extract, Japanese Nuphar extract, Fennel extract, Primrose extract, Rose extract, Rehmannia glutinosa extract, Lemon extract, Lithospermum officinale extract, Aloe extract, Acorus calamus root extract, Eucalyptus extract, Horsetail extract, Sage extract, Thyme extract, Tea extract, Seaweed extract, Cucumber extract, Clove extract, Raspberry extract, Melissa officinalis extract, Carrot extract, Aesculus hippocastanum extract, Peach extract, Peach leaf extract, Mulberry extract, Cornflower extract, Witch Hazel extract, Placenta extract, Thymus extract, Silk extract, and Licorice extract.

[0145] Examples of the various powders include bright coloring pigments such as red iron oxide, yellow iron oxide, black iron oxide, titanium mica, titanium mica coated with iron oxide, and glass flakes coated with titanium oxide; inorganic powders such as mica, talc, kaolin, sericite, zinc oxide, and silicon dioxide; and organic powders such as polyethylene powder, nylon powder, cross-linked polystyrene, cellulose powder, and silicone powder.

[0146] Example

[0147] The present invention will be described in further detail below with reference to Examples, but the present invention is not limited to these Examples.

[0148] 《Examples 1 and 2, and Comparative Examples 1 to 6》

[0149] The cosmetic compositions (oil-based cosmetic compositions) of Examples and Comparative Examples were prepared based on the formulations shown in Table 1 below. In Examples 1 and 2, and Comparative Examples 1 to 6, each oil medium contains polar oil and silicone oil, and in Table 1, the order of describing the Examples and Comparative Examples is determined based on the order of the content of the polar oil in the oil medium (before removing the volatile components).

[0150] In addition, about each obtained composition, "ultraviolet (UV) protection efficiency" and "blocking resistance" were evaluated according to the following criteria. The results are shown in Table 1.

[0151] 〈UV protection efficiency〉

[0152] Each composition obtained in the examples and comparative examples was dripped in a certain amount (2 mg / cm2) on a 50 mm square acrylic resin simulated substrate simulating the texture of human skin. 2 ), uniformly coated at a constant load (100 ± 30 g) and a constant speed (100 mm / sec × 50 reciprocations). After 60 minutes of drying, the coated substrate was subjected to a spectrophotometer (manufactured by Hitachi, Ltd., SPECTROPHOTOMETER U-3500) to transmit ultraviolet light and visible light of 280 to 500 nm, and the absorbance was calculated from the transmittance measurement.

[0153] (Evaluation Criteria)

[0154] The maximum value of the absorbance in the wavelength range of UV light from 280 nm to 380 nm was calculated, and the UV protection efficiency was determined according to the following evaluation criteria:

[0155] "A": The maximum absorbance is 1.6 or more.

[0156] "B": The maximum absorbance is greater than 1.4 and less than 1.6,

[0157] "C": The maximum absorbance is greater than 1.0 and less than 1.4,

[0158] "D": The maximum absorbance is less than 1.0.

[0159] In the case of "A" above, the UV protection rate was evaluated to be the best. Furthermore, this result suggests that the ultraviolet scattering agent particles are most well dispersed in the coating film. In addition, in the order from "B" to "D", the UV protection rate was evaluated to be gradually worse, and in particular, in the case of "D", the UV protection rate was evaluated to be the worst. Furthermore, this result suggests that the dispersibility of the ultraviolet scattering agent particles in the coating film is gradually worse.

[0160] (Caking resistance)

[0161] The compositions obtained in Examples and Comparative Examples were evaluated for caking resistance by a sedimentation evaluation test.

[0162] More specifically, 40 g of each sample was filled in a 50 ml glass screw tube and left to stand at room temperature for 24 hours. After 24 hours, each sample container was repeatedly turned over and the state of the powder settled to the bottom of the container was evaluated according to the following evaluation criteria:

[0163] "A": No residue was observed at the bottom of the container after the container was inverted once, and no powder sedimentation occurred.

[0164] "B": Powder residue was observed at the bottom of the container when the container was inverted once, but the residue disappeared after inverting and stirring once or more and 10 times or less.

[0165] "C": Powder residue was observed at the bottom of the container after one inversion, but the residue disappeared after 11 or more and 30 inversions and stirring.

[0166] "D": Powder residue was observed at the bottom of the container when the container was inverted once, and the residue did not disappear even after inverting and stirring 50 times.

[0167] In the case of "A", no caking occurred, that is, the caking resistance was the best. In addition, the caking resistance was gradually deteriorated in the order from "B" to "D", and in particular, the caking resistance was the worst in the case of "D".

[0168]

[0169] As is clear from the results in Table 1, the cosmetic compositions of Examples 1 and 2 are both excellent in UV protection and anti-caking properties, that is, they are compositions in which the ultraviolet scattering agent particles in the coating film have good dispersibility and are less likely to form lumps.

[0170] In contrast, it is found that the cosmetic composition of Comparative Example 1 has a slightly low UV protection rate and poor anti-blocking property. It is also found that the cosmetic compositions of Comparative Examples 2 to 6 cannot have both UV protection rate and anti-blocking property.

[0171] 《Examples 3 to 5 and Comparative Examples 7 to 11》

[0172] Based on the prescription shown in Table 2 below, the cosmetic compositions (oily cosmetic compositions) of the Examples and Comparative Examples were prepared. In addition, each of the obtained compositions was evaluated in the same manner as the evaluation of the above-mentioned "ultraviolet (UV) protection efficiency" and "blocking resistance". The results are shown in Table 2.

[0173]

[0174] As is clear from the results in Table 2, the cosmetic compositions of Examples 3 to 5 are all excellent in UV protection rate and anti-blocking property, that is, they are compositions in which the ultraviolet scattering agent particles in the coating film have good dispersibility and are less likely to block.

[0175] In contrast, it is found that none of the cosmetic compositions of Comparative Examples 7 to 11 has both UV protection and anti-caking properties.

[0176] 《Examples 6 to 13 and Comparative Example 12》

[0177] Based on the prescription shown in Table 3 below, cosmetic compositions (oil-based cosmetic compositions) of Examples 6 to 13 and Comparative Example 12 were prepared. In addition, each of the obtained compositions was evaluated in the same manner as the above-mentioned evaluation of "ultraviolet (UV) protection efficiency" and "blocking resistance". The results are shown in Table 3.

[0178]

[0179] As described in Examples 6 to 10 in Table 3, it is found that excellent UV protection and anti-blocking properties can be obtained even when ultraviolet scattering agent particles with or without surface treatment of titanium oxide and zinc oxide and different types of surface treatment agents are mixed.

[0180] Furthermore, in Examples 11, 12, and 13, a substance using cetyl ethylhexanoate as a polar oil instead of diisopropyl sebacate, a substance using polydimethylsiloxane (1CS) as a silicone oil instead of polydimethylsiloxane (1.5CS), and a substance using a mixture of undecane and tridecane as a hydrocarbon oil instead of isododecane were prepared, respectively. It was found that excellent UV protection and anti-blocking properties were also obtained in Examples 11 to 13.

[0181] On the other hand, as described in Comparative Example 12, it was found that when nonvolatile polydimethylsiloxane (6CS) was used as silicone oil, the UV protection rate was poor.

[0182] 《Example 14》

[0183] Based on the following Table 4, the cosmetic composition of Example 14 (oily cosmetic composition) was prepared. The composition of Example 14 was observed by a stereo microscope, and it was confirmed that the metal oxide particles were slightly agglomerated. The obtained composition was applied to an acrylic resin substrate that simulated the texture of the skin at a certain drop amount, load, and coating speed, and the absorbance in the UVB region (290nm) and the visible light transmittance at 490nm were investigated over time from just after coating to 30 minutes using a spectrophotometer. The respective results are shown in Figure 1 and Figure 2 middle.

[0184] In the above-mentioned measurement of UVB absorbance and visible light transmittance, the coating film was prepared under the same substrate, drop amount, load, and coating speed as in the evaluation of “UV protection efficiency” and the measurement was performed using the same spectrophotometer.

[0185] Table 4

[0186]

[0187] Depend on Figure 1 The results clearly show that the absorbance of the composition of Example 14 in the UVB region (290 nm) is low immediately after application, but the absorbance (i.e., UV protection ability) increases significantly after about 8 minutes. It is believed that this is because after the composition of Example 14 is applied to the skin, part of the oily medium contained therein volatilizes to change the composition, thereby improving the dispersibility of the ultraviolet scattering agent particles, resulting in an improvement in UV protection ability.

[0188] In addition, by Figure 2 The results clearly show that the visible light transmittance of the composition of Example 14 is low immediately after application, but the transmittance increases significantly after about 8 minutes, that is, the transparency increases significantly. This is considered to be because after the composition of Example 14 is applied to the skin, part of the oily medium contained therein volatilizes to change the composition, thereby improving the dispersibility of the ultraviolet scattering agent particles, and as a result, the false whitening caused by the aggregation of the ultraviolet scattering agent particles is also improved, resulting in a composition with high transparency.

[0189] 《Examples 15 and 16》

[0190] Based on the prescription shown in Table 5 below, the cosmetic compositions (water-in-oil emulsified cosmetic compositions) of Examples 15 and 16 were prepared. In addition, each of the obtained compositions was evaluated in the same manner as the above-mentioned evaluation of "ultraviolet (UV) protection efficiency" and "blocking resistance". The results are shown in Table 5.

[0191] Table 5

[0192]

[0193] As is clear from the results in Table 5, the water-in-oil cosmetic composition of Example 15 is excellent in UV protection and anti-blocking properties. On the other hand, it is known that the UV protection of Example 16, in which the water content is 30% by mass, is slightly inferior.

Claims

1. A composition, particularly a cosmetic composition, comprising ultraviolet scattering agent particles dispersed in a mixture of an oily medium and polyhydroxystearic acid, wherein the composition satisfies the following conditions (I) to (III): Condition(I) In the composition, The oily medium contains polar oil and silicone oil, or contains polar oil, hydrocarbon oil and silicone oil. The silicone oil is 55 parts by mass or more relative to a total of 100 parts by mass of the oily medium, and The ultraviolet scattering agent particles are 10 parts by mass or more relative to 100 parts by mass of the total oily medium. Condition (II) When the volatile components in the oily medium are removed and the calculation is performed, The silicone oil after the volatile components are removed is 40 parts by mass or less relative to 100 parts by mass of the total oily medium after the volatile components are removed, and Condition (III) The mass ratio of the polyhydroxystearic acid to the ultraviolet scattering agent particles, that is, the mass of the polyhydroxystearic acid / the mass of the ultraviolet scattering agent particles, is 0.02 or more.

2. The composition according to claim 1, in the condition (I), satisfies: In the composition, The silicone oil is in an amount of 55 parts by mass or more and 83 parts by mass or less relative to 100 parts by mass of the total of the oily medium.

3. The composition according to claim 2, in the condition (I), In the composition, The polar oil is 10 parts by mass or more relative to 100 parts by mass of the total oil medium. The hydrocarbon oil is 20 parts by mass or less relative to 100 parts by mass of the total oily medium, and In the condition (II), When the volatile components in the oily medium are removed and the calculation is performed, The polar oil after the volatile components are removed is 20 parts by mass or more relative to 100 parts by mass of the total oil medium after the volatile components are removed. The hydrocarbon oil after the volatile components are removed is 70 parts by mass or less relative to 100 parts by mass of the total oily medium after the volatile components are removed, and The silicone oil after the volatile components are removed is 40 parts by mass or less relative to 100 parts by mass of the total oil medium after the volatile components are removed.

4. The composition according to claim 1, in the condition (II), When the volatile components in the oily medium are removed and the calculation is performed, The polyhydroxystearic acid is contained in an amount of 1.0 part by mass or more and 30 parts by mass or less relative to 100 parts by mass of the total of the oil medium from which the volatile components are removed and the polyhydroxystearic acid. 5 . The composition according to claim 1 , wherein the ultraviolet scattering agent particles are at least one selected from titanium oxide, zinc oxide, iron oxide and cerium oxide. The composition according to claim 1 , wherein the silicone oil comprises a linear silicone oil.

7. The composition of claim 1, wherein the polar oil does not contain a UV absorber.

8. The composition according to any one of claims 1 to 7, which is an oily cosmetic composition.

9. The composition according to any one of claims 1 to 7, which is a water-in-oil emulsified cosmetic composition and has a water content of less than 30% by mass.

10. The composition according to any one of claims 1 to 7, which is an oil-in-water emulsified cosmetic composition.

11. The composition according to any one of claims 1 to 7, which is a sunscreen cosmetic composition.

Images