Sunscreen cosmetic

Abstract

Provided is a sunscreen cosmetic having an improved specific sunscreen odor generated when a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber, which is solid at room temperature, are used in combination.　The sunscreen cosmetic of the present disclosure comprises a specific perfume in addition to a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature.

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 used multiple UV absorbers in combination, resulting in more complex odors. In particular, sunscreen cosmetics that use a salicylic acid derivative UV absorber in combination with a UV absorber that is solid at room temperature 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, an object of the present disclosure is to provide a sunscreen cosmetic that has improved the characteristic sunscreen odor that occurs when a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature are used in combination.

[0010] <Aspect 1> A composition comprising a salicylic acid derivative ultraviolet absorber, an ultraviolet absorber that is solid at room temperature, and a fragrance, wherein the fragrance is selected from the group consisting of limonene, 2,6-dimethyl-7-octen-2-ol, n-octanal, cis-3-hexen-1-yl salicylate, 4-methyl-3-decen-5-ol, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellyl acetate, citronellol, β-ionone, benzyl acetate, α-hexylcinnamaldehyde, methyl dihydrojasmonate, geraniol, cis-jasmone, jasmine lactone, 1-(2-butenoyl)-2,6,6-trimethyl-2-methylpropional, ... 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-γ-2-benzopyran. Aspect 3: The cosmetic according to Aspect 1 or 2, wherein the UV absorber that is solid at room temperature is at least one selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine and diethylamino hydroxybenzoyl hexyl benzoate. Aspect 4: The cosmetic according to any one of Aspects 1 to 3, further comprising an UV absorber having an IOB of 0.10 or more. Aspect 5: The cosmetic according to Aspect 4, wherein the UV absorber having an IOB of 0.10 or more is at least one selected from the group consisting of octocrylene and octyl methoxycinnamate.Aspect 6: The cosmetic preparation according to any one of Aspects 1 to 5, wherein the fragrance is at least one selected from the group consisting of limonene, cis-3-hexen-1-yl salicylate, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellol, β-ionone, benzyl acetate, methyl dihydrojasmonate, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, and isobutylmethyltetrahydropyranol. Aspect 7: The cosmetic preparation according to any one of Aspects 1 to 6, further comprising a thickener. Aspect 8: The content of the fragrance is 1.0 x 10 per 100 parts by mass of the total amount of the salicylic acid derivative ultraviolet absorber and the ultraviolet absorber that is solid at room temperature. －６ The cosmetic preparation according to any one of Aspects 1 to 7, wherein the content of the ultraviolet scattering agent is 1.0 mass % or less.

[0011] According to the present disclosure, it is possible to provide a sunscreen cosmetic that has improved the characteristic sunscreen odor that occurs when a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature are used in combination.

[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 a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature.

[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 a salicylic acid derivative UV absorber is used in combination with an UV absorber that is solid at room temperature, 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, salicylic acid-based odors, bitter-like odors, and composite odors of these.

[0016] Sunscreen cosmetics generally emit a unique odor associated with the base used. The base contains various ingredients, and the present inventor analyzed the odor of each part (e.g., ultraviolet absorber part, ultraviolet scattering agent part) used in preparing the cosmetic. As a result, the present inventor discovered that the source of the unpleasant odor is the odor generated when a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature are used in combination and heated during the preparation of the cosmetic. He discovered that eliminating this odor can eliminate the unpleasant odor of the cosmetic as a whole. Note that this odor typically occurs when a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature are heated, but this odor remains in the cosmetic even after it has been slowly cooled to room temperature.

[0017] When odor is a concern, it is common to incorporate 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 a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature are used in combination and then heated during the preparation of a cosmetic product, 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 a salicylic acid derivative ultraviolet absorber and an ultraviolet absorber that is solid at room temperature 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 Preparation Salicylic Acid Derivative UV Absorber The sunscreen cosmetic preparation of the present disclosure contains a salicylic acid derivative UV absorber. Such a material may be, for example, a commercially available product. The salicylic acid derivative UV absorber can also suitably dissolve the UV absorber that is solid at room temperature, as described below.

[0023] The amount of the salicylic acid derivative ultraviolet absorber to be blended is not particularly limited, and can be appropriately blended so as to achieve the desired sunscreen performance. Specifically, the blending amount can be, for example, 1.0 mass% or more, 5.0 mass% or more, 10 mass% or more, 15 mass% or more, 20 mass% or more, or 30 mass% or more relative to the total amount of the cosmetic, and can be 90 mass% or less, 85 mass% or less, 80 mass% or less, 75 mass% or less, 70 mass% or less, 65 mass% or less, 60 mass% or less, 55 mass% or less, 50 mass% or less, 45 mass% or less, 40 mass% or less, or 35 mass% or less.

[0024] The salicylic acid derivative ultraviolet absorber is not particularly limited as long as it is an ultraviolet absorber having a salicylic acid skeleton, and examples thereof include homosalate (homomenthyl salicylate), ethylhexyl salicylate (octyl salicylate), and triethanolamine salicylate. The salicylic acid derivative ultraviolet absorbers can be used alone or in combination of two or more.

[0025] The present inventors have found that when an ultraviolet absorber that is solid at room temperature and a salicylic acid derivative ultraviolet absorber are heated in order to mix them, the odor associated with the salicylic acid derivative ultraviolet absorber is intensified. Among these, homosalate and ethylhexyl salicylate have a particularly strong odor-intensifying effect upon heating. However, because the cosmetic composition of the present disclosure contains a specific fragrance, it is possible to suitably improve the sunscreen odor even when blended with such homosalate and ethylhexyl salicylate and subjected to a heating process.

[0026] <UV Absorber That Is Solid at Room Temperature> The sunscreen cosmetic composition of the present disclosure contains an UV absorber that is solid at room temperature.

[0027] The amount of the ultraviolet absorber that is solid at room temperature is not particularly limited, and can be appropriately blended so as 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 can be 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.

[0028] The sunscreen cosmetic of the present disclosure typically comprises a mixture of an ultraviolet absorber that is solid at room temperature and a salicylic acid derivative ultraviolet absorber, which are heated and mixed together. Therefore, there are no particular limitations on the ultraviolet absorber that is solid at room temperature, as long as it can be dissolved by heating. Examples of such ultraviolet absorbers include bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, and oxybenzone-3. The ultraviolet absorbers that are solid at room temperature can be used alone or in combination of two or more. In particular, bis-ethylhexyloxyphenol methoxyphenyl triazine and diethylamino hydroxybenzoyl hexyl benzoate enhance the sunscreen odor when combined with a heated salicylic acid derivative ultraviolet absorber. However, the cosmetic of the present disclosure contains a specific fragrance, which can effectively reduce the sunscreen odor even when using such ultraviolet absorbers.

[0029] <Fragrance> The sunscreen cosmetic of the present disclosure contains the following specific fragrance (hereinafter, may be referred to as "specific fragrance"). By incorporating such a fragrance into the cosmetic, it is possible to improve the characteristic sunscreen odor that is generated when a salicylic acid derivative UV absorber and an UV absorber that is solid at room temperature are used in combination and then heated during the preparation of the cosmetic.

[0030] Specific fragrances include limonene, 2,6-dimethyl-7-octen-2-ol, n-octanal, cis-3-hexen-1-yl salicylate, 4-methyl-3-decen-5-ol, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellyl acetate, citronellol, β-ionone, benzyl acetate, α-hexylcinnamaldehyde, methyl dihydrojasmonate, geraniol, cis-jasmone, jasmine lactone, 1-(2-butenoyl)-2,6,6-trimethylsilyl methyl acrylate, methyl ... and at least one selected from the group consisting of 1,3-ethyl-1,3-cyclohexadiene, methyl ionone, isobutylmethyltetrahydropyranol, vanillin, 2-acetyl-2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydronaphthalene, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, and 1,3,4,6,7,8 hexahydro-4,6,6,7,8,8 hexamethylcyclopenta-γ2-benzopyran. 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, cis-3-hexen-1-yl salicylate, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellol, β-ionone, benzyl acetate, methyl dihydrojasmonate, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, and isobutylmethyltetrahydropyranol 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.

[0031] 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 －４Mass% 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.

[0032] In addition, the specific fragrance improves the characteristic sunscreen odor caused by the salicylic acid derivative ultraviolet absorber and the ultraviolet absorber that is solid at room temperature. Therefore, the blending amount of the specific fragrance is 1.0 × 10 per 100 parts by mass of the total amount of the salicylic acid derivative ultraviolet absorber and the ultraviolet absorber that is solid at room temperature. －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.

[0033] 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 －６It is preferable to keep the content of the fragrance to 100% by mass or less, and it is more preferable not to incorporate incompatible fragrances. Examples of such incompatible fragrances include cis-3-hexenyl acetate and dimethyl-3-cyclohexene-1-carbaldehyde. Whether or not a fragrance other than the above-mentioned specific fragrances is an incompatible fragrance 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.

[0034] <Optional Components> The sunscreen cosmetic of the present disclosure may contain various components as appropriate, provided that the effects of the present disclosure are not adversely affected. Examples of the various components include additives typically found in sunscreen cosmetics, such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, thickeners, humectants, dispersants, water-soluble polymers, oil-soluble polymers, film-forming agents such as 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, buffers, preservatives, propellants, organic powders, inorganic powders, UV scattering agents, pigments, dyes, coloring matter, water, and oils. These optional components may be used alone or in combination of two or more.

[0035] 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.

[0036] (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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Examples of inorganic thickeners include bentonite, laponite, hectorite, aluminum magnesium silicate, and silicic anhydride.

[0041] 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.

[0042] (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.

[0043] 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).

[0044] 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.

[0045] 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.

[0046] 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, relative to the total amount of the cosmetic, and can be 15% by mass or less, 13% by mass or less, 10% by mass or less, 9.0% by mass or less, 8.0% by mass or less, 7.0% by mass or less, 6.0% by mass or less, 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.

[0047] In some embodiments, the sunscreen cosmetic composition of the present disclosure contains an oil. Such oils are not particularly limited, and examples thereof include polar oils, hydrocarbon oils, and silicone oils. The oils can be used alone or in combination.

[0048] There are no particular restrictions on the amount of oil that can be blended, and the amount can be, for example, within a range of 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, as appropriate depending on the form of the cosmetic (e.g., oil-in-water cosmetic, water-in-oil cosmetic, oil-based cosmetic).

[0049] When the cosmetic is an oil-in-water cosmetic, the amount of oil 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.

[0050] When the cosmetic is a water-in-oil cosmetic, the amount of 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.

[0051] (Polar oil) The polar oil is not particularly limited, and for example, a polar oil having an IOB of 0.10 or more can be used. In addition, 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 mean, for example, a range of 20°C ± 15°C.

[0052] 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).

[0053] a. Polar oils with an IOB of 0.10 or more Examples of polar oils that satisfy this condition 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.

[0054] b. Organic UV absorbers with an IOB of 0.10 or more Examples of organic UV absorbers that satisfy these conditions include octocrylene, octyl methoxycinnamate (ethylhexyl methoxycinnamate), polysilicone-15, etc. Such UV absorbers can be used alone or in combination of two or more. Among these, octocrylene and octyl methoxycinnamate are preferred from the viewpoints of the solubility of the UV absorbers that are solid at room temperature, the transparency of the cosmetic, etc.

[0055] Some organic UV absorbers with an IOB of 0.10 or more have an odor. Therefore, when using such an organic UV absorber, from the viewpoint of suppressing the sunscreen odor, it is preferable to blend it in 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 blend such an organic UV absorber in the cosmetic.

[0056] (Hydrocarbon Oil) 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.

[0057] (Silicone Oil) Examples of silicone oil include linear silicone oil, branched silicone oil, and cyclic silicone oil.

[0058] 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.

[0059] Examples of branched silicone oils include methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane.

[0060] Cyclic silicone oils include, for example, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0061] (UV Scattering Agent) The sunscreen cosmetic composition of the present disclosure may contain 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.

[0062] The amount of the ultraviolet scattering agent may 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 may be 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, or 10% by mass or less.

[0063] 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.

[0064] 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.

[0065] The shape of the ultraviolet scattering agent is not particularly limited, and examples thereof include spherical, elliptical, flaky, and crushed shapes.

[0066] The ultraviolet scattering agent may be surface-treated. The surface treatment can be carried out by a known method. Alternatively, a commercially available surface-treated ultraviolet scattering agent may be used.

[0067] 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.

[0068] 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.

[0069] Examples of silicone compounds include methylhydrogenpolysiloxane, dimethylpolysiloxane (dimethicone), and methylphenylpolysiloxane.

[0070] Examples of the fluorine compound include perfluoroalkyl group-containing esters, perfluoropolyethers, and polymers having perfluoroalkyl groups.

[0071] 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.

[0072] Examples of quaternary ammonium salt compounds include stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, dicetyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, and dilauryldimethylammonium chloride.

[0073] The cosmetic composition of the present disclosure can exhibit excellent UV protection performance because it uses a salicylic acid derivative UV absorber in addition to a UV absorber that is solid at room temperature. As a result, the cosmetic composition of the present disclosure can reduce the amount of UV scattering agent that has traditionally been incorporated into sunscreen cosmetics to enhance UV protection performance. While UV scattering agents can enhance UV protection performance, they also cause sunscreen cosmetics to appear white. Because the cosmetic composition of the present disclosure can exhibit excellent UV protection performance even with a reduced amount of UV scattering agent, it can provide a sunscreen cosmetic with excellent transparency.

[0074] From the viewpoint of obtaining a sunscreen cosmetic having excellent transparency, the blending amount of the ultraviolet scattering agent is preferably 1.0 mass % or less, 0.5 mass % or less, or 0.1 mass % or less, relative to the total amount of the cosmetic, and it is more preferable that no ultraviolet scattering agent is blended in the cosmetic.

[0075] <Form and 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 a dispersion method or an aggregation method.

[0076] The production of the cosmetic preparation of the present disclosure typically includes a heating step to mix a salicylic acid derivative UV absorber with a UV absorber that is solid at room temperature. Cosmetics containing these UV absorbers exhibit a characteristic sunscreen odor that occurs when heated. However, the cosmetic preparation of the present disclosure contains the specific fragrance described above, and therefore can effectively alleviate the sunscreen odor 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. The production of the cosmetic preparation of the present disclosure may also include any other step besides the heating step, such as a slow cooling step.

[0077] 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.

[0078] 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.

[0079] The sunscreen cosmetic may be in the form of, for example, a milky lotion, a cream, or a liquid.

[0080] 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 %.

[0081] 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 4 and FIG.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] Test Example 1: Confirmation of the effect of different fragrances on improving the odor of sunscreen products In Test Example 1, the effect of different fragrances on improving the odor of sunscreen products was investigated. The results are shown in Tables 1 to 3.

[0086] <Method of Producing Cosmetics> (Example 1) Using the formulation shown in Table 1, an oil-based cosmetic was produced by the following method.

[0087] The salicylic acid derivative UV absorbers ethylhexyl salicylate and homosalate, bisethylhexyloxyphenol methoxyphenyl triazine, a UV absorber that is solid at room temperature, and dextrin palmitate, a thickener, were mixed while heating to 80°C to prepare an UV absorber part.

[0088] After the ultraviolet absorber part was gradually cooled to room temperature, the perfume limonene was added and mixed uniformly to obtain an oil-based cosmetic.

[0089] (Examples 2 to 24 and Comparative Examples 1 and 2) Oil-based cosmetics of Examples 2 to 24 and Comparative Examples 1 and 2 were obtained in the same manner as in Example 1, except that the types and blending amounts of fragrances were changed to those shown in Tables 1 to 3.

[0090]

[0091]

[0092]

[0093] <Results> As is clear from Tables 1 to 3 and FIG. 1, it was confirmed that the cosmetic preparation containing the specific fragrance of the present disclosure can suitably improve the characteristic sunscreen odor that occurs when a salicylic acid derivative UV absorber and a UV absorber that is solid at room temperature are used in combination and heated during the preparation of the cosmetic preparation.

[0094] On the other hand, the results of Comparative Examples 1 and 2 also revealed that some fragrances are not effective against this particular sunscreen odor.

[0095] Test Example 2: Confirmation of the sunscreen odor-improving effect of different UV absorbers that are solid at room temperature In Test Example 2, the effect of improving the sunscreen odor when diethylaminohydroxybenzoyl hexyl benzoate was used as a UV absorber that is solid at room temperature was investigated. The results are shown in Table 4.

[0096] <Method of Producing Cosmetics> (Examples 25 to 27 and Comparative Examples 3 to 4) Oil-based cosmetics of Examples 25 to 27 and Comparative Examples 3 and 4 were obtained in the same manner as in Example 1, except that the formulations were changed as shown in Table 4.

[0097]

[0098] <Results> As is clear from Table 4, it was confirmed that cosmetics containing the specific fragrance of the present disclosure can suitably improve the characteristic sunscreen odor that occurs when a salicylic acid derivative UV absorber and a UV absorber that is solid at room temperature are used in combination and heated during the preparation of the cosmetics, regardless of the type of UV absorber that is solid at room temperature.

[0099] On the other hand, the results of Comparative Examples 3 and 4 revealed that some fragrances not only are ineffective against this distinctive sunscreen odor, but also make it even more unpleasant. <<Formulation Examples of Sunscreen Cosmetics>> Formulation examples of sunscreen cosmetics according to the present disclosure are given 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 and 4 are oil-in-water emulsion cosmetics, each prepared by a conventional method. Note that each of the cosmetics described in the following formulation examples also contains the specific fragrance of the present disclosure, and therefore the distinctive sunscreen odor was suitably improved.

[0100] <Prescription Example 1>

[0101] <Prescription Example 2>

[0102] <Prescription Example 3>

[0103] <Prescription Example 4>

Claims

1. A sunscreen cosmetic containing a salicylic acid derivative ultraviolet absorber, a solid ultraviolet absorber at room temperature, and a fragrance, wherein the fragrance is at least one selected from the group consisting of limonene, 2,6-dimethyl-7-octen-2-ol, n-octanal, salicylic acid cis-3-hexen-1-yl, 4-methyl-3-decen-5-ol, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellyl acetate, citronellol, β-ionone, benzyl acetate, α-hexylcinnamaldehyde, methyl dihydrojasmonate, geraniol, cis-jasmone, jasmine lactone, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, isobutyl methyltetrahydropyranol, vanillin, 2-acetyl-2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydronaphthalene, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopentenyl)-2-buten-1-ol, and 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopentaγ2-benzopyran, A sunscreen cosmetic.

2. The cosmetic according to claim 1, wherein the salicylic acid derivative ultraviolet absorber is at least one selected from the group consisting of ethylhexyl salicylate and homosalate.

3. The cosmetic according to claim 1 or 2, wherein the solid ultraviolet absorber at room temperature is at least one selected from the group consisting of bis-ethylhexyl oxy-phenol methoxyphenyl triazine and diethylamino hydroxybenzoyl hexyl benzoate.

4. The cosmetic according to claim 1 or 2, further comprising an ultraviolet absorber with an IOB of 0.10 or more.

5. The cosmetic according to claim 4, wherein the ultraviolet absorber with an IOB of 0.10 or more is at least one selected from the group consisting of octocrylene and octyl methoxycinnamate.

6. The cosmetic according to claim 1 or 2, wherein the fragrance is at least one selected from the group consisting of limonene, cis-3-hexen-1-yl salicylate, hexyl acetate, 2-phenylethyl alcohol, linalool, citronellol, β-ionone, benzyl acetate, methyl dihydrojasmonate, geraniol, 1-(2-butenoyl)-2,6,6-trimethyl-1,3-cyclohexadiene, methyl ionone, and isobutylmethyltetrahydropyranol.

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

8. The content of the fragrance is 1.0×10 －６ parts by mass or more per 100 parts by mass of the total amount of the salicylic acid derivative ultraviolet absorber and the ultraviolet absorber that is solid at normal temperature. The cosmetic according to claim 1 or 2.

9. The cosmetic according to claim 1 or 2, wherein the content of the ultraviolet scattering agent is 1.0% by mass or less.