Sunscreen cosmetic

Abstract

Provided is a sunscreen cosmetic having an improved specific sunscreen odor generated when a bis-ethylhexyloxyphenolmethoxyphenyltriazine of an ultraviolet absorber is used in combination with an ultraviolet scattering agent.　The sunscreen cosmetic of the present disclosure contains a a specific perfume in addition to bis-ethylhexyloxyphenolmethoxyphenyltriazine, an ultraviolet scattering agent and a polar oil.

Description

Sunscreen cosmetics

[0001] The present disclosure relates to a sunscreen cosmetic.

[0002] In the field of cosmetics, various compositions exhibiting sunscreen properties and cosmetic preparations using such compositions have been developed.

[0003] Patent Document 1 discloses a liquid or gel fragrance composition that contains 0.5 to 30% by weight of a fragrance component, 0.1 to 20% by weight of an emulsifier, 50 to 99% by weight of water, 0.001 to 10% by weight of a water-soluble polymer, and an ultraviolet absorber, and that is substantially alcohol-free.

[0004] Patent Document 2 describes UV Ａ A single organic filter that filters UV Ｂ and an anti-ultraviolet additive comprising at least 95% by weight of a mixture of 1 to 50% by weight of at least one non-volatile oil as a solvent for said filter, said anti-ultraviolet additive comprising: a single organic filter different from the first filter for filtering said Ａ The organic filter for filtering UV rays is selected from dibenzoylmethane derivatives and represents 5 to 75% by weight of the additive. Ｂ The present invention discloses a cosmetic composition or perfumed solution containing an anti-ultraviolet additive, the composition containing a fragrance and a colorant, wherein the organic filter for filtering the above-mentioned components is selected from cinnamate derivatives and accounts for 20 to 90% by weight of the additive, and the non-volatile oil is selected from isononyl isononanoate, butylene glycol dicaprylate / dicaprate, phenyl trimethicone, and diisostearyl malate and accounts for 5 to 30% by weight of the additive.

[0005] Patent Document 3 discloses a water-in-oil sunscreen emulsion cosmetic containing (A) a cinnamic acid-based ultraviolet absorber, (B) porous silica, (C) oil, (D) a surfactant, and (E) water.

[0006] Japanese Patent Application Laid-Open No. 08-225431 Japanese Patent No. 6551701 Japanese Patent Application Laid-Open No. 2009-067683

[0007] For example, as described in the background art of Patent Document 3, the odor peculiar to the ultraviolet absorbent blended in the sunscreen cosmetic has been a problem.

[0008] In recent years, sunscreen cosmetics have been formulated with UV scattering agents in addition to UV absorbers, resulting in more complex odors. In particular, sunscreen cosmetics that use a combination of the UV absorber bis-ethylhexyloxyphenol methoxyphenyl triazine and a UV scattering agent have excellent sunscreen performance, but they exhibit a unique sunscreen odor, and there has been a demand for an improvement in this sunscreen odor.

[0009] Therefore, the subject of the present disclosure is to provide a sunscreen cosmetic that has improved the characteristic sunscreen odor that occurs when the ultraviolet absorber bisethylhexyloxyphenol methoxyphenyl triazine is used in combination with an ultraviolet scattering agent.

[0010] Aspect 1: A sunscreen cosmetic comprising bis-ethylhexyloxyphenol methoxyphenyl triazine, an ultraviolet scattering agent, a polar oil, and a fragrance, wherein the fragrance is at least one selected from the group consisting of limonene, cis-3-hexenyl acetate, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, allyl heptanoate, 2-phenylethyl alcohol, linalool, citronellyl acetate, geraniol, cis-jasmone, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, 1,3,4,6,7,8 hexahydro-4,6,6,7,8,8 hexamethylcyclopenta-γ2-benzopyran, and ethylene glycol brassylate. <Aspect 2> The cosmetic preparation according to Aspect 1, wherein the UV scattering agent is a hydrophobically treated particle. <Aspect 3> The cosmetic preparation according to Aspect 1 or 2, wherein the polar oil has an IOB value of 0.10 or greater. <Aspect 4> The cosmetic preparation according to any one of Aspects 1 to 3, wherein the fragrance is at least one selected from the group consisting of limonene, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, 2-phenylethyl alcohol, linalool, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, and ethylene glycol brassylate. <Aspect 5> The cosmetic preparation according to any one of Aspects 1 to 4, further comprising a thickener. <Aspect 6> The content of the fragrance is 1.0 × 10 per 100 parts by mass of the total amount of bis-ethylhexyloxyphenol methoxyphenyl triazine and the ultraviolet scattering agent. －６ 6. The cosmetic preparation according to any one of Aspects 1 to 5, wherein the amount of the component (I) is 1 or more parts by mass.

[0011] According to the present disclosure, it is possible to provide a sunscreen cosmetic that has improved the characteristic sunscreen odor that occurs when the ultraviolet absorber bisethylhexyloxyphenol methoxyphenyl triazine is used in combination with an ultraviolet scattering agent.

[0012] FIG. 1 is a graph showing the masking effect and harmonizing effect when various fragrances are used.

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present disclosure is not limited to the following embodiments, and various modifications can be made within the scope of the present invention.

[0014] The sunscreen cosmetic of the present disclosure (hereinafter sometimes simply referred to as "cosmetic") contains the above-mentioned specific fragrance in addition to bis-ethylhexyloxyphenol methoxyphenyl triazine, an ultraviolet scattering agent, and a polar oil.

[0015] Without being limited by the principle, the sunscreen cosmetic of the present disclosure is believed to improve the characteristic sunscreen odor (hereinafter sometimes simply referred to as "sunscreen odor") that occurs when bis-ethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent are used in combination, based on the following principle: To make it easier to imagine such sunscreen odor, more specific odors can be described, but are not limited to, the following: an irritating odor (irritating odor), a metallic odor (metallic odor), an organic solvent-like odor (solvent odor), and a combination of these odors.

[0016] Sunscreen cosmetics generally emit a distinctive odor associated with the base used. The base contains various components, and the present inventors analyzed the odor of each part (e.g., ultraviolet absorber part, ultraviolet scattering agent part) used in preparing the cosmetic. As a result, they found that the odor generated when bis-ethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent are used in combination is the source of the unpleasant odor, and discovered that eliminating the odors associated with these can eliminate the unpleasant odor of the cosmetic as a whole.

[0017] When odor is a concern, it is common to add a fragrance, as described in Patent Document 1. However, the present inventors have discovered that not all fragrances are effective in eliminating the characteristic sunscreen odor that occurs when bis-ethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent are used in combination, and that some fragrances actually exacerbate the unpleasant odor.

[0018] The present inventors then analyzed the relationship between such sunscreen odors and fragrances from the perspectives of masking effect and harmonization effect, and found that by selecting a specific fragrance from among the countless fragrances available, it is possible to improve the sunscreen odor in a more pleasant way, and ultimately to improve the sunscreen odor of the entire cosmetic product containing bisethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent in a more pleasant way.

[0019] The definitions of terms used in this disclosure are as follows:

[0020] In the present disclosure, the "harmonizing effect" refers to the effect of incorporating an unpleasant odor component and a fragrance component to shift the quality of the unpleasant odor from unpleasant to pleasant.

[0021] In the present disclosure, "masking effect" means the effect of eliminating or concealing unpleasant odors.

[0022] <Sunscreen Cosmetic> <Bis-ethylhexyloxyphenol methoxyphenyl triazine> The sunscreen cosmetic of the present disclosure contains bis-ethylhexyloxyphenol methoxyphenyl triazine as an ultraviolet absorber. Such a material can be, for example, a commercially available product.

[0023] The amount of bis-ethylhexyloxyphenol methoxyphenyl triazine blended is not particularly limited, and can be blended as appropriate to achieve the desired sunscreen performance. Specifically, the blending amount can be, for example, 0.1% by mass or more, 0.5% by mass or more, or 1.0% by mass or more, and 20% by mass or less, 15% by mass or less, 10% by mass or less, 7.0% by mass or less, or 5.0% by mass or less, relative to the total amount of the cosmetic.

[0024] <UV Scattering Agent> The sunscreen cosmetic composition of the present disclosure contains an UV scattering agent. In the present disclosure, the term "UV scattering agent" refers to an agent that can physically block UV rays by reflection or scattering. The UV scattering agent can be used alone or in combination of two or more types, and commercially available products can be used as appropriate.

[0025] The blending amount of the ultraviolet scattering agent can be, for example, 1.0% by mass or more, 3.0% by mass or more, or 5.0% by mass or more relative to the total amount of the cosmetic, and can be 40% by mass or less, 35% by mass or less, 30% by mass or less, or 25% by mass or less.

[0026] The sunscreen odor in the sunscreen cosmetic of the present disclosure is due to the combined use of the UV absorber bis-ethylhexyloxyphenol methoxyphenyl triazine and the UV scattering agent. The blending ratio of bis-ethylhexyloxyphenol methoxyphenyl triazine to the UV scattering agent, in mass ratio, can be, for example, any of 5:1, 4:1, 3:1, 2:1, 1:1, 1:1.5, and 1:2, and any of 1:1, 1:1.5, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, and 1:10. Of these, a range of 2:1 to 1:6 is preferred, a range of 1:1 to 1:5 is more preferred, and a range of 1:1.5 to 1:5 is particularly preferred. When bis-ethylhexyloxyphenol methoxyphenyl triazine and the UV scattering agent are used in combination within such a range, the sunscreen odor-improving effect of the fragrance of the present disclosure can be suitably exerted.

[0027] The ultraviolet scattering agent is not particularly limited, and examples thereof include particles of metal oxides such as zinc oxide, titanium oxide, silicon oxide (silica), iron oxide, aluminum oxide, cerium oxide, chromium oxide, and tungsten oxide. Other examples include particles of barium sulfate, talc, mica, salicite, kaolin, titanium mica, iron blue, and chromium hydroxide. Among these, zinc oxide particles and titanium oxide particles are preferred from the viewpoint of sunscreen performance, etc.

[0028] The size of the ultraviolet scattering agent is not particularly limited and can be appropriately set so as to achieve the desired sunscreen performance. For example, the average primary particle diameter of the ultraviolet scattering agent can be 10 nm or more, 20 nm or more, or 30 nm or more, and can be 100 nm or less, 70 nm or less, or 50 nm or less. Here, in the present disclosure, "average primary particle diameter" means the diameter of the primary particles of powder measured by a commonly used method, and specifically, is a value obtained as the arithmetic mean of the major axis length and minor axis length of 10 or more particles observed with a transmission electron microscope.

[0029] The shape of the ultraviolet scattering agent is not particularly limited, and examples thereof include spherical, elliptical, flaky, and crushed shapes.

[0030] The UV scattering agent may be surface-treated. The surface treatment can be carried out by a known method. Alternatively, a commercially available surface-treated UV scattering agent may be used. UV scattering agents that have been surface-treated, particularly those that have been hydrophobized, have a stronger odor than UV scattering agents that have not been surface-treated. However, the sunscreen cosmetic composition of the present disclosure, which contains a specific fragrance, can suitably improve the sunscreen odor even when it contains such a surface-treated UV scattering agent.

[0031] From the viewpoint of dispersibility in cosmetics, etc., hydrophobization is preferred as the surface treatment. Examples of hydrophobization agents used in the hydrophobization treatment include various compounds that can be used for hydrophobization surface treatment of ultraviolet scattering agents blended in cosmetics, etc., such as fatty acids, silicone compounds, fluorine compounds, silane coupling agents, and quaternary ammonium salt compounds. The hydrophobization agents can be used alone or in combination of two or more.

[0032] Fatty acids include, for example, palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, rosin acid, and 12-hydroxystearic acid.

[0033] Examples of silicone compounds include methylhydrogenpolysiloxane, dimethylpolysiloxane (dimethicone), and methylphenylpolysiloxane.

[0034] Examples of the fluorine compound include perfluoroalkyl group-containing esters, perfluoropolyethers, and polymers having perfluoroalkyl groups.

[0035] Examples of the silane coupling agent include fluoroalkylsilane compounds such as perfluoroalkylsilane, trifluoromethylethyltrimethoxysilane, and heptadecafluorodecyltrimethoxysilane; and alkylsilane compounds such as methyltriethoxysilane, ethyltriethoxysilane, hexyltriethoxysilane, octyltriethoxysilane, and triethoxycaprylylsilane.

[0036] Examples of quaternary ammonium salt compounds include stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, dicetyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, and dilauryldimethylammonium chloride.

[0037] <Polar Oil> The sunscreen cosmetic of the present disclosure contains a polar oil. The polar oil can dissolve bis-ethylhexyloxyphenol methoxyphenyl triazine. The polar oil can be used alone or in combination of two or more types.

[0038] The amount of polar oil blended is not particularly limited, and can be blended appropriately depending on the form of the cosmetic (e.g., oil-in-water cosmetic, water-in-oil cosmetic, oil-based cosmetic) within a range of, for example, 0.5% by mass or more, 1.0% by mass or more, or 3.0% by mass or more, 80% by mass or less, 75% by mass or less, 70% by mass or less, 65% by mass or less, or 60% by mass or less, relative to the total amount of the cosmetic.

[0039] When the cosmetic is an oil-in-water cosmetic, the amount of polar oil blended can be, for example, 0.5% by mass or more, 1.0% by mass or more, 3.0% by mass or more, 5.0% by mass or more, 7.0% by mass or more, 10% by mass or more, 13% by mass or more, or 15% by mass or more relative to the total amount of the cosmetic, and can be 50% by mass or less, 40% by mass or less, 30% by mass or less, 25% by mass or less, or 20% by mass or less.

[0040] When the cosmetic is a water-in-oil cosmetic, the amount of polar oil may be, for example, 20% by mass or more, 25% by mass or more, or 30% by mass or more relative to the total amount of the cosmetic, and may be 70% by mass or less, 65% by mass or less, or 60% by mass or less.

[0041] The polar oil is not particularly limited, and for example, a polar oil having an IOB of 0.10 or more can be used. Furthermore, an organic ultraviolet absorber having an IOB of 0.10 or more can be considered a polar oil. Here, the polar oil is preferably liquid at room temperature. In the present disclosure, "room temperature" can refer to, for example, a range of 20°C ± 15°C.

[0042] The IOB value of polar oils and organic UV absorbers that can be considered polar oils can be, for example, 0.10 or more, 0.11 or more, 0.12 or more, or 0.13 or more, and can be 0.60 or less, 0.55 or less, 0.50 or less, 0.45 or less, or 0.40 or less. Here, the IOB value is an abbreviation for Inorganic / Organic Balance (inorganic / organic ratio), and is a value that represents the ratio of the inorganic value to the organic value, and is an index that indicates the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. The "inorganic value" and "organic value" are set according to the type of atom or functional group, such as 20 for one carbon atom in a molecule and 100 for one hydroxyl group. The IOB value of an organic compound can be calculated by integrating the "inorganic values" and "organic values" of all atoms and functional groups in the organic compound (see, for example, "Organic Conceptual Diagram - Fundamentals and Applications" by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984).

[0043] (Polar oils with an IOB of 0.10 or more) Examples of polar oils that satisfy these conditions include isopropyl myristate (IOB value = 0.18), octyl palmitate (IOB value = 0.13), isopropyl palmitate (IOB value = 0.16), butyl stearate (IOB value = 0.14), hexyl laurate (IOB value = 0.17), myristyl myristate (IOB value = 0.11), decyl oleate (IOB value = 0.11), isononyl isononanoate (IOB value = 0.20), and isotridecyl isononanoate (IOB value = 0.15). ), Cetyl Ethylhexanoate (IOB Value = 0.13), Pentaerythrityl Tetraethylhexanoate (IOB Value = 0.35), Diethylhexyl Succinate (IOB Value = 0.32), Dioctyl Succinate (IOB Value = 0.36), Glycol Distearate (IOB Value = 0.16), Glyceryl Diisostearate (IOB Value = 0.29), Neopentyl Glycol Dicaprate (IOB Value = 0.25), Diisostearyl Malate (IOB Value = 0.28), Trimethylol Triisostearate Propane (IOB value = 0.16), glyceryl tri-2-ethylhexanoate (triethylhexanoin) (IOB value = 0.35), trimethylolpropane trioctanoate (IOB value = 0.33), trimethylolpropane triisostearate (IOB value = 0.16), diisobutyl adipate (IOB value = 0.46), N-lauroyl-L-glutamic acid-2-octyldodecyl ester (IOB value = 0.29), 2-hexyldecyl adipate (IOB value = 0.16), diisopropyl sebacate propyl (IOB value = 0.40), 2-ethylhexyl palmitate (IOB value = 0.13), 2-ethylhexyl ethylhexanoate (IOB value = 0.20), triisostearin (IOB value = 0.16), PPG-3 dipivalate (IOB value = 0.52), tri(caprylic / capric acid)glyceryl (IOB value = 0.33), PPG-3 dipivalate (IOB value = 0.52), alkyl benzoate (for example, alkyl benzoate having 12 to 15 carbon atoms) (IOB value = 0.18), etc. These can be used alone or in combination of two or more.

[0044] (Organic UV absorbers with an IOB of 0.10 or more) Examples of organic UV absorbers that satisfy these conditions include ethylhexyl methoxycinnamate, octocrylene, polysilicone-15, homosalate, ethylhexyl salicylate, etc. These UV absorbers can be used alone or in combination of two or more.

[0045] Among organic UV absorbers with an IOB of 0.10 or more, there are UV absorbers that exhibit an odor (for example, salicylic acid derivative UV absorbers such as homosalate). Therefore, when using such organic UV absorbers, it is preferable to incorporate them into the cosmetic at a ratio of 10% by mass or less, 7.0% by mass or less, 5.0% by mass or less, 3.0% by mass or less, 1.0% by mass or less, or 0.5% by mass or less, or it is more preferable not to incorporate such organic UV absorbers into the cosmetic.

[0046] The sunscreen cosmetic of the present disclosure contains the following specific fragrance (hereinafter, sometimes referred to as the "specific fragrance"). By incorporating such a fragrance into the cosmetic, it is possible to improve the characteristic sunscreen odor caused by the ultraviolet absorber bis-ethylhexyloxyphenol methoxyphenyl triazine and the ultraviolet scattering agent that are also incorporated.

[0047] The specific fragrance may include at least one selected from the group consisting of limonene, cis-3-hexenyl acetate, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, allyl heptanoate, 2-phenylethyl alcohol, linalool, citronellyl acetate, geraniol, cis-jasmone, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, 1,3,4,6,7,8 hexahydro-4,6,6,7,8,8 hexamethylcyclopenta-γ2 benzopyran, and ethylene glycol brassylate. These fragrances can achieve a score of greater than 0 in the harmonization test described below. Among these, at least one selected from the group consisting of limonene, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, 2-phenylethyl alcohol, linalool, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, and ethylene glycol brassylate is preferred. Such fragrances can further improve the sunscreen odor if they score above 0.3 in the harmonization test described below, and can further improve the sunscreen odor if they score above 0.6.

[0048] The amount of the specific fragrance to be added can be adjusted as appropriate depending on the desired level of improvement in the sunscreen odor and the desired level of fragrance. For example, the amount to be added can be 1.0 x 10 －６ Mass% or more, 5.0 x 10 －６ Mass% or more, 1.0×10 －５ Mass% or more, 5.0 x 10 －５ Mass% or more, 1.0×10 －４ Mass% or more, 5.0 x 10 －４ mass% or more, or 1.0 x 10 －３ % by mass or more, and may be 0.1% by mass or less, 0.05% by mass or less, or 0.03% by mass or less.

[0049] In addition, the specific fragrance improves the characteristic sunscreen odor caused by bis-ethylhexyloxyphenol methoxyphenyl triazine and the ultraviolet scattering agent, so the blending amount of the specific fragrance is 1.0 × 10 per 100 parts by mass of the total amount of bis-ethylhexyloxyphenol methoxyphenyl triazine and the ultraviolet scattering agent. －６ Parts by mass or more, 5.0 x 10 －６ Parts by mass or more, 1.0×10 －５ Parts by mass or more, 5.0 x 10 －５ Parts by mass or more, 1.0×10 －４ Parts by mass or more, 5.0 x 10 －４ Parts by mass or more, 1.0×10 －３ parts by mass or more, or 5.0 x 10 －３ It may be 1.0 part by mass or more, or 0.50 part by mass or less, 0.10 part by mass or less, or 0.05 part by mass or less.

[0050] In some embodiments, the sunscreen cosmetic of the present disclosure may contain fragrances other than the above-mentioned specific fragrances, as long as they do not adversely affect the effects of the present disclosure. However, some fragrances may be ineffective against the sunscreen odor of the present disclosure, or may even produce an unpleasant odor (hereinafter, sometimes referred to as "incompatible fragrances"). The blending amount of such incompatible fragrances is 1.0 x 10 based on the total amount of the cosmetic. －３ Mass% or less, 5.0×10 －４ Mass% or less, 1.0×10 －４ Mass% or less, 5.0×10 －５ Mass% or less, 1.0×10 －５ mass% or less, or 5.0 x 10 －６ It is preferable to limit the content of fragrances to 100% by mass or less, and it is more preferable not to incorporate incompatible fragrances. Examples of such incompatible fragrances include 2,6-dimethyl-7-octen-2-ol, n-octanal, and cis-3-hexen-1-yl salicylate. Whether or not fragrances other than the above-mentioned specific fragrances are incompatible fragrances can be evaluated by the harmonization test described below. Specifically, if the harmonization effect score is 0 or less, the fragrance can be considered an incompatible fragrance when used alone.

[0051] <Optional Components> The sunscreen cosmetic of the present disclosure may contain various components as appropriate, provided that they do not adversely affect the effects of the present disclosure. Examples of the various components include additives typically found in sunscreen cosmetics, such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, thickeners, moisturizers, dispersants such as polyhydroxystearic acid, film-forming agents such as water-soluble polymers, oil-soluble polymers, and silicone-modified polysaccharides, sequestering agents, lower alcohols such as ethanol, polyhydric alcohols such as ethylene glycol, higher alcohols, various extracts, sugars, amino acids, organic amines, polymer emulsions, chelating agents, UV absorbers other than the above-mentioned UV absorbers, pH adjusters, skin nutrients, vitamins, water-soluble agents applicable to pharmaceuticals, quasi-drugs, cosmetics, etc., buffers, preservatives, propellants, organic powders, inorganic powders other than UV scattering agents, pigments, dyes, colorants, water, and oils other than the above-mentioned polar oils. These optional components may be used alone or in combination of two or more.

[0052] In some embodiments, the sunscreen cosmetic of the present disclosure contains a thickener. The thickener can be selected appropriately from aqueous phase thickeners, oil phase thickeners, etc. depending on the form of the cosmetic (e.g., oil-in-water cosmetic, water-in-oil cosmetic, oil-based cosmetic). Thickeners can be used alone or in combination of two or more. Note that, because the sunscreen cosmetic of the present disclosure contains the specific fragrance described above, even if the thickener has an odor, the sunscreen odor of the cosmetic as a whole can be suitably improved.

[0053] (Aqueous Phase Thickener) The aqueous phase thickener may be one that is typically incorporated into cosmetics to increase the viscosity of the aqueous phase. Specific examples include various hydrophilic thickeners such as natural water-soluble polymers, semi-synthetic water-soluble polymers, synthetic water-soluble polymers, and inorganic thickeners. The aqueous phase thickeners may be used alone or in combination of two or more.

[0054] Examples of natural water-soluble polymers include plant-derived polymers such as gum arabic, tragacanth gum, galactan, guar gum, carrageenan, pectin, quince seed extract, agar, and brown algae powder; microbial-derived polymers such as xanthan gum, dextran, pullulan, and succinoglycan; and animal-derived polymers such as collagen, casein, albumin, and gelatin.

[0055] Examples of semi-synthetic water-soluble polymers include starch-based polymers such as carboxymethyl starch and methylhydroxystarch; cellulose-based polymers such as methyl cellulose, nitrocellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, stearoxyhydroxypropylmethyl cellulose, cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, and crystalline cellulose; and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0056] Examples of synthetic water-soluble polymers include vinyl polymers such as polyvinyl alcohol, polyvinyl acetate, polyvinyl methyl ether, polyvinylpyrrolidone, vinylpyrrolidone and vinyl acetate copolymers, and carboxyvinyl polymers; and acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide, acrylic acid / alkyl methacrylate copolymers (e.g., (acrylates / alkyl acrylate (C10-30)) crosspolymer), polyacrylic acid alkanolamine, alkyl methacrylate and dimethylaminoethyl methacrylate copolymers, poly2-acrylamido-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium, (acryloyldimethyltaurate ammonium / VP) copolymer, and (dimethylacrylamide / acryloyldimethyltaurate Na) copolymer.

[0057] Examples of inorganic thickeners include bentonite, laponite, hectorite, aluminum magnesium silicate, and silicic anhydride.

[0058] The amount of the aqueous phase thickener may be, for example, 0.1% by mass or more, 0.3% by mass or more, or 0.5% by mass or more, and may be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, or 2.0% by mass or less, relative to the total amount of the cosmetic.

[0059] (Oil phase thickener) The oil phase thickener can be one that is usually incorporated into cosmetics to increase the thickening property of the oil phase. Specific examples include dextrin fatty acid esters, sucrose fatty acid esters, and fatty acids or their salts. The oil phase thickener can be used alone or in combination of two or more.

[0060] The dextrin fatty acid ester is an ester of dextrin or reduced dextrin with a higher fatty acid, and any dextrin commonly used in cosmetics can be used without any particular limitation. It is preferable to use dextrin or reduced dextrin with an average degree of glycopolymerization of 3 to 100. It is preferable to use a saturated fatty acid having 8 to 22 carbon atoms as the constituent fatty acid of the dextrin fatty acid ester. Specific examples include dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, and dextrin (palmitate / 2-ethylhexanoate).

[0061] The sucrose fatty acid ester can preferably be one in which the fatty acid is linear or branched, saturated or unsaturated, and has 12 to 22 carbon atoms. Specific examples include sucrose caprylate, sucrose caprate, sucrose laurate, sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate, and sucrose erucate.

[0062] The fatty acid may be solid at room temperature, such as myristic acid, palmitic acid, stearic acid, or behenic acid. The salts of the fatty acids may include calcium salts, magnesium salts, and aluminum salts of these fatty acids.

[0063] The blending amount of the oil phase thickener can be, for example, 0.1% by mass or more, 0.3% by mass or more, or 0.5% by mass or more, and can be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, or 2.0% by mass or less, relative to the total amount of the cosmetic.

[0064] In some embodiments, the sunscreen cosmetic composition of the present disclosure contains an oil component other than the polar oils described above. Such oil components are not particularly limited, and examples thereof include hydrocarbon oils and silicone oils. Such oil components can be used alone or in combination.

[0065] Examples of hydrocarbon oils include petrolatum, liquid paraffin, tetraisobutane, hydrogenated polydecene, microcrystalline wax, olefin oligomer, isododecane, isohexadecane, squalane, polybutene, hydrogenated polybutene, polyisobutene, and hydrogenated polyisobutene.

[0066] Examples of silicone oils include linear silicone oils, branched silicone oils, and cyclic silicone oils.

[0067] Examples of linear silicone oils include dimethylpolysiloxane with a viscosity of 0.65 cs (sometimes referred to as "dimethicone"), dimethylpolysiloxane with a viscosity of 1 cs, dimethylpolysiloxane with a viscosity of 1.5 cs, and dimethylpolysiloxane with a viscosity of 2 cs. Here, these viscosities refer to kinematic viscosities in an atmosphere at 25°C.

[0068] Examples of branched silicone oils include methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane.

[0069] Cyclic silicone oils include, for example, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0070] The amount of such oil to be blended is not particularly limited, and can be blended appropriately depending on the form of the cosmetic (e.g., oil-in-water cosmetic, water-in-oil cosmetic, oil-based cosmetic). For example, it may be blended in the same way as the polar oil described above.

[0071] <Form and Dosage Form of Cosmetic> The sunscreen cosmetic of the present disclosure can be provided in the form of, for example, an oil-based cosmetic, a water-in-oil emulsion cosmetic, or an oil-in-water emulsion cosmetic. Such cosmetics can be prepared by known methods such as dispersion and aggregation. The production of the cosmetic may include, for example, a heating step and a slow cooling step. When a heating step is performed, the cosmetic typically tends to have a stronger sunscreen odor during or after the heating step. However, since the cosmetic of the present disclosure contains the specific fragrance described above, the sunscreen odor can be suitably improved even when a heating step is performed. The temperature conditions for the heating step are not particularly limited, and can be, for example, 70°C or higher, 75°C or higher, or 80°C or higher, and 100°C or lower, 95°C or lower, 90°C or lower, or 85°C or lower.

[0072] The dispersion method is a method of mechanically breaking down clumps of the dispersed phase into smaller particles. Specifically, it is a method of emulsifying by utilizing the crushing force of an emulsifier, and an example of such a method is a high-pressure emulsification method in which high shear force is applied using a high-pressure homogenizer.

[0073] The aggregation method is a colloid preparation method that utilizes surface chemical properties, in which a uniformly dissolved state is transformed into a supersaturated state by some means, resulting in the emergence of a dispersed phase. Specific methods known include HLB temperature emulsification, phase inversion emulsification, non-aqueous emulsification, D-phase emulsification, and liquid crystal emulsification.

[0074] The sunscreen cosmetic may be in the form of, for example, a milky lotion, a cream, or a liquid.

[0075] The present disclosure will be described in more detail below with reference to examples, but the present disclosure is not limited to these. Note that, hereinafter, unless otherwise specified, the blending amounts are expressed in mass %.

[0076] The following tests were carried out using the test samples obtained by the manufacturing methods described below, and the results are summarized in Tables 1 to 3 and FIG.

[0077] Evaluation Method Harmonization Test and Masking Test Five grams of each of the prepared cosmetics were filled into a 20 mL screw bottle, and the bottle was sealed with the attached cap. After leaving the bottle at room temperature for at least one hour after sealing, the cap was removed, and a panel of three expert evaluators smelled the odor through the 1.5 cm diameter bottle opening, and performed a sensory evaluation of the harmonization effect and masking effect of each fragrance on the sunscreen odor according to the following criteria. The average evaluation scores of the three expert panels are shown in each table. Here, if at least the harmonization effect score exceeds 0, it can be said that the sunscreen odor has been suitably improved, and if both the harmonization effect and masking effect scores exceed 0, it can be said that the sunscreen odor has been even more suitably improved. When changing test samples, an unscented control sample was smelled before smelling the next test sample. In addition, to prevent olfactory fatigue, if the evaluation required a long period of time (for example, 2 hours or more), a break of about 10 minutes or more was taken every 30 minutes.

[0078] Sensory score for harmonization effect +2 points: The scent harmonized with the sunscreen odor and was pleasant. +1 point: The scent harmonized with the sunscreen odor and was no longer unpleasant. 0 point: There was no change in the unpleasantness of the sunscreen odor. -1 point: The unpleasantness was stronger than the sunscreen odor. -2 points: The odor was worse than the sunscreen odor.

[0079] Sensory score for masking effect: 4 points: No sunscreen odor was detected. 3 points: A slight sunscreen odor was detected. 2 points: The sunscreen odor was slightly detected. 1 point: The sunscreen odor was strongly detected. 0 point: The sunscreen odor was barely removed.

[0080] Test Example 1: Confirmation of the effect of different fragrances on improving the odor of sunscreen products Test Example 1 examined the effect of different fragrances on improving the odor of sunscreen products. The results are shown in Tables 1 and 2.

[0081] <Method of Producing Cosmetics> (Example 1) Using the formulation shown in Table 1, an oil-based cosmetic was produced by the following method.

[0082] An ultraviolet absorber part was prepared by mixing bisethylhexyloxyphenol methoxyphenyl triazine, an ultraviolet absorber that is solid at room temperature, diisopropyl sebacate, a polar oil, and dextrin palmitate, a thickener, while heating to 80°C.

[0083] Next, zinc oxide as an ultraviolet scattering agent that had been hydrophobized with triethoxycaprylylsilane, isododecane as a hydrocarbon oil, and polyhydroxystearic acid as a dispersant were mixed together to prepare powder parts.

[0084] While the ultraviolet absorber part was heated at 80°C, the powder part was added to the ultraviolet absorber part and mixed uniformly. After slowly cooling to room temperature, the fragrance limonene was added and mixed uniformly to obtain an oil-based cosmetic.

[0085] (Examples 2 to 15 and Comparative Examples 1 to 3) Oil-based cosmetics of Examples 2 to 15 and Comparative Examples 1 to 3 were obtained in the same manner as Example 1, except that the types and blending amounts of fragrances were changed to those shown in Table 1 or Table 2.

[0086]

[0087]

[0088] <Results> As is clear from Tables 1 and 2 and FIG. 1, it was confirmed that the cosmetic composition containing the specific fragrance of the present disclosure can suitably improve the characteristic sunscreen odor that occurs when bis-ethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent are used in combination.

[0089] On the other hand, the results of Comparative Examples 1 to 3 also revealed that some fragrances are ineffective against this characteristic sunscreen odor, or conversely, some fragrances make the odor even more unpleasant.

[0090] Test Example 2: Confirmation of the sunscreen odor improvement effect by different polar oils In Test Example 2, the effect of improving the sunscreen odor when a polar oil different from the polar oil used in Test Example 1 was used was investigated. The results are shown in Table 3.

[0091] <Method of Producing Cosmetics> (Examples 16 to 21 and Comparative Examples 4 to 7) Oil-based cosmetics of Examples 16 to 21 and Comparative Examples 4 to 7 were obtained in the same manner as in Example 1, except that the formulation was changed as shown in Table 3.

[0092]

[0093] <Results> As is clear from Table 3, it was confirmed that cosmetics containing the specific fragrance of the present disclosure can effectively improve the characteristic sunscreen odor that occurs when bis-ethylhexyloxyphenol methoxyphenyl triazine and an ultraviolet scattering agent are used in combination, regardless of the type of polar oil.

[0094] <<Formulation Examples of Sunscreen Cosmetics>> Formulation examples of sunscreen cosmetics according to the present disclosure are listed below, but the present disclosure is not limited to these examples. Of the cosmetics with the formulations shown below, the cosmetics of Formulation Examples 1 and 2 are water-in-oil emulsion cosmetics, and the cosmetics of Formulation Examples 3 to 5 are oil-in-water emulsion cosmetics, each of which was prepared by a conventional method. For example, the cosmetic described in Formulation Example 1 below contains geranium in addition to the fragrance (cis-3-hexen-1-yl salicylate) used in Comparative Example 3. However, because this cosmetic also contains the specific fragrance of the present disclosure, the characteristic sunscreen odor was suitably improved. The characteristic sunscreen odor was also suitably improved for the cosmetics in the other formulation examples.

[0095] <Prescription Example 1>

[0096] <Prescription Example 2>

[0097] <Prescription Example 3>

[0098] <Prescription Example 4>

[0099] <Prescription Example 5>

Claims

1. It contains bisethylhexyloxyphenol methoxyphenyltriazine, an ultraviolet scattering agent, a polar oil, and a fragrance, wherein the fragrance is at least one selected from the group consisting of limonene, cis-3-hexenyl acetate, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, allyl heptanoate, 2-phenylethyl alcohol, linalool, citronellyl acetate, geraniol, cis-jasmone, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopentaγ2benzopyran, and ethylene glycol brassylate, A sunscreen cosmetic.

2. The cosmetic according to claim 1, wherein the ultraviolet scattering agent is hydrophobically treated particles.

3. The cosmetic according to claim 1 or 2, wherein the polar oil has an IOB value of 0.10 or more.

4. The cosmetic according to claim 1 or 2, wherein the fragrance is at least one selected from the group consisting of limonene, 7-methyl-2H-1,5-benzodioxepin-3(4H)-one, 2-phenylethyl alcohol, linalool, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, coumarin, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, and ethylene glycol brassylate.

5. The cosmetic according to claim 1 or 2, further comprising a thickener.

6. The content of the fragrance is 1.0×10 per 100 parts by mass of the total amount of bisethylhexyloxyphenol methoxyphenyltriazine and the ultraviolet scattering agent. －６The cosmetic according to claim 1 or 2, which is above the mass part.