Skin cosmetic

Abstract

To provide a skin cosmetic which, even in a state of wearing a mask, can suppress skin shine while retaining a gloss-imparting effect, renders pores less noticeable, and thereby preserves even skin tone.SOLUTION: A skin cosmetic comprises the following components (A), (B), (C), and (D): (A) 0.0001 mass% to 0.05 mass% of one or two or more polymethoxyflavones, (B) 0.01 mass% to 5 mass% of polyoxyalkylene methyl glucoside, (C) 0.5 mass% to 20 mass% of at least one selected from the group consisting of glycerin and diglycerin, and (D) 0.01 mass% to 0.5 mass% of ethylhexylglycerin.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a skin cosmetic used to improve the condition of the skin by, for example, reducing uneven skin tone on the face, body, etc. [Background technology]

[0002] Glowing skin is important for a youthful appearance. Glowing skin makes wrinkles and blemishes less noticeable than dull skin, making the skin appear younger. However, when trying to impart shine using oily ingredients, excess oil on the skin can result in shininess. Shiny skin is skin with an excess of oil on the skin, while glowing skin is skin with a good balance of moisture and sebum, resulting in a smooth surface. On the other hand, excessive sebum secretion can make pores more noticeable. Therefore, by smoothing the skin surface while balancing moisture and sebum, it is possible to impart shine to the skin without causing shine and keep pores less noticeable.

[0003] Patent Document 1 discloses a cosmetic product containing coated particles in which silicone elastomer particles or silicone elastomer / silicone resin composite particles are coated on the surface of a flaky base powder, and an oily component containing volatile silicone oil, and describes that this cosmetic product has excellent shine immediately after application, but does not become shiny even when sebum is produced over time, and can make pores less noticeable. Although this cosmetic product imparts shine upon application, is not shiny, and can make pores less noticeable, the effects do not last once the cosmetic product is removed from the skin.

[0004] Recently, people are increasingly wearing masks. Because the inside of a mask is in a highly humid state, sebum is secreted, making it even more difficult to achieve both a gloss-imparting effect and a shine-suppressing effect, which can make pores more noticeable. Furthermore, when wearing a mask, friction occurs between the mask and the face, making cosmetics on the skin more likely to be removed. Therefore, when wearing a mask, the cosmetics of Patent Document 1 may not be able to maintain glossy, non-glossy skin with less noticeable pores.

[0005] Patent Document 2 discloses a skin cosmetic containing polymethoxyflavone, a dihydric alcohol, and an alkylene oxide derivative, and states that this skin cosmetic has excellent effects of improving skin texture and tightening pores. However, because wearing a mask causes excessive sebum secretion, the skin cosmetic of Patent Document 2 may not be able to maintain skin with less noticeable pores. Furthermore, constant wearing of a mask can cause rough skin and excessive sebum secretion due to friction on the masked area of ​​the face, while dryness and sunburn can occur on the other areas of the face, resulting in a decrease in even skin tone. While there are methods for using different cosmetics for the masked and non-masked areas, using different cosmetics for different areas is time-consuming, so it was desired to be able to maintain even skin tone with just one cosmetic product. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-216602 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-56149 Summary of the Invention [Problem to be solved by the invention]

[0007] Currently, no skin cosmetics have yet been developed that can maintain the effect of suppressing shine on the skin while adding a radiant glow even when wearing a mask, keep pores inconspicuous, and maintain a smooth, even complexion. To provide a skin cosmetic that has a sustained effect of suppressing shine on the skin and imparting a lustrous finish even when wearing a mask, can keep pores inconspicuous, and can maintain a smooth, even skin. [Means for solving the problem]

[0008] As a result of intensive research in light of the above-mentioned problems, the present inventors discovered that the above-mentioned problems can be solved by a skin cosmetic containing a specific polymethoxyflavone, a polyoxyalkylene methyl glucoside, at least one member selected from the group consisting of glycerin and diglycerin, and ethylhexylglycerin, each in a specific range of content, and thus completed the present invention.

[0009] The present invention relates to the following [1], [2] and [3]. [1] A skin cosmetic comprising: component (A) 0.0001 to 0.05 mass% of one or more polymethoxyflavones; component (B) 0.01 to 5 mass% of polyoxyalkylene methyl glucoside; component (C) 0.5 to 20 mass% of at least one selected from the group consisting of glycerin and diglycerin; and component (D) 0.01 to 0.5 mass% of ethylhexylglycerin. [2] The skin cosmetic preparation according to the above [1], which contains 0.0005 to 0.25% by mass of component (E) a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine. [3] The skin cosmetic preparation according to [1] or [2] above, containing 0.1 to 10 mass% of component (F) one or more selected from ascorbyl glucoside, tranexamic acid, and niacinamide. [Effects of the Invention]

[0010] The skin cosmetic of the present invention has the effect of suppressing shine on the skin and giving it a lasting luster even when wearing a mask, keeping pores inconspicuous, and maintaining even skin tone. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described. In this specification, a numerical range defined using the symbol "to" includes both the upper and lower limits of the symbol "to." For example, "2 to 5" means 2 or more and 5 or less. In this specification, "(meth)acrylic" means "acrylic" or "methacrylic," and "(meth)acryloyl" means "acryloyl" or "methacryloyl," respectively.

[0012] <Component (A): Polymethoxyflavone> Component (A) used in the present invention is a polymethoxyflavone, which may be one or more selected from the group consisting of 3,5,6,7,8,3',4'-heptamethoxyflavone (heptamethoxyflavone), 5,6,7,8,3',4'-hexamethoxyflavone (hexamethoxyflavone), 5,6,7,8,4'-pentamethoxyflavone (pentamethoxyflavone), and the like.

[0013] Polymethoxyflavones can be obtained by various synthetic methods, or by solvent extraction from plants as natural products. Examples of methods for obtaining polymethoxyflavones from plants include extraction from the peel of plants in the Rutaceae Citrus family. Plants in the Rutaceae Citrus family, such as satsuma mandarins, ponkan, hassaku, lemons, tachibana, yuzu, sudachi, pomelo, tangerines, oranges, and grapefruit, contain polymethoxyflavones. Among these, satsuma mandarins, tachibana, yuzu, sudachi, and oranges are preferred, and tachibana and oranges are more preferred.

[0014] Polymethoxyflavones can be isolated and purified by extracting the peel of these plants of the genus Citrus in the family Rutaceae with water or an organic solvent, and then separating the extract by column chromatography.

[0015] First, the peel of a citrus plant is extracted with water, an organic solvent, or a mixture thereof. Examples of organic solvents include water-soluble alcohols such as methanol, ethanol, propanol, butanol, propylene glycol, and 1,3-butylene glycol; acetone, hexane, ethyl acetate, and chloroform. Preferred solvents are one or more solvents selected from the group consisting of methanol, ethanol, propanol, butanol, propylene glycol, 1,3-butylene glycol, and ethyl acetate. More preferred solvents are one or more solvents selected from the group consisting of methanol, ethanol, propylene glycol, and 1,3-butylene glycol, with ethanol being even more preferred.

[0016] Concentrating the extract yields an extract containing approximately 1 to 15% by mass of the target polymethoxyflavones. For further purification, this extract is dissolved in ethyl acetate in an amount at least twice by mass, preferably 3 to 10 times by mass, and water is added, followed by stirring and layer separation. The aqueous layer is removed, and the ethyl acetate is distilled off to obtain a dry product.

[0017] In the present invention, at least one polymethoxyflavones selected from the group consisting of heptamethoxyflavone, hexamethoxyflavone, and pentamethoxyflavone, etc., obtained from a synthetic mixture or isolated from a plant extract, may be used alone or in a mixture of two or more. Furthermore, the mixture obtained from the synthetic mixture may be used as is, or in a form containing multiple polymethoxyflavones, such as a plant extract. To enhance the effects obtained, it is preferable to use two or more polymethoxyflavones, and more preferably to use a mixture of three polymethoxyflavones.

[0018] The dried product obtained from the extract is usually redissolved in an appropriate solvent and subjected to liquid column chromatography to obtain polymethoxyflavones. Liquid column chromatography uses silica gel or alumina as the packing material and a mixed solvent of hexane and ethanol in a volume ratio of 70 / 30 to 97 / 3 as the eluent.

[0019] The content of component (A) is 0.0001 to 0.05% by mass, preferably 0.0005 to 0.04% by mass, and more preferably 0.001 to 0.03% by mass, based on the total amount of the skin cosmetic. If the content is less than 0.0001% by mass, the effect of suppressing shine and adding a radiant glow when wearing a mask may not last, pores may not be kept inconspicuous, or skin unevenness may not be maintained. If the content exceeds 0.05% by mass, the effect may not be commensurate with the amount blended.

[0020] <Component (B): Polyoxyalkylene methyl glucoside> The component (B) used in the present invention is a polyoxyalkylene methyl glucoside. Examples of the polyoxyalkylene methyl glucoside used in the present invention include polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside, and polyoxyethylene polyoxypropylene methyl glucoside.

[0021] Polyoxyalkylene methyl glucoside has a structure in which an oxyalkylene group is added to a methyl glucoside, and the oxyalkylene group is preferably one or both of an oxyethylene group and an oxypropylene group. The average number of moles of oxyethylene groups added in polyoxyethylene methyl glucoside is 5-30, and preferably 10-20. The average number of moles of oxypropylene groups added in polyoxypropylene methyl glucoside is 5-30, and preferably 10-20. The average total number of moles of oxyethylene groups and oxypropylene groups added in polyoxyethylene polyoxypropylene methyl glucoside is 5-30, and preferably 10-20.

[0022] The content of component (B) is 0.01 to 5% by mass, preferably 0.02 to 4% by mass, and more preferably 0.03 to 3.5% by mass, based on the total amount of the skin cosmetic. If it is less than 0.01% by mass, the effect of suppressing shine while adding a radiant glow may not be sustained when wearing the mask, and even skin tone may not be maintained. If it exceeds 5% by mass, the effect of suppressing shine while adding a radiant glow may not be achieved.

[0023] <Ingredient (C): Glycerin, diglycerin> The component (C) used in the present invention is at least one selected from the group consisting of glycerin and diglycerin. Glycerin can be produced by a method in which an aqueous solution obtained by hydrolyzing fats and oils is purified by distillation or the like. Diglycerin can be produced by a method in which glycerin is subjected to dehydration condensation and then purified. Glycerin and diglycerin may be used alone or in combination, but it is preferable to use glycerin.

[0024] The content of component (C) is 0.5 to 20% by mass, preferably 1 to 18% by mass, and more preferably 2 to 16% by mass, based on the total amount of the skin cosmetic. If it is less than 0.5% by mass, the effect of suppressing skin shine while adding a radiant glow may not be sustained, pores may not be kept inconspicuous, or even skin tone may not be maintained when wearing a mask. If it is more than 5% by mass, the effect of suppressing skin shine while adding a radiant glow may not be achieved, or even skin tone may not be maintained when wearing a mask.

[0025] <Ingredient (D): Ethylhexylglycerin> The component (D) used in the present invention is ethylhexylglycerin, which is a monoether of glycerin and 2-ethylhexanol. The content of component (D) is 0.01 to 0.5% by mass, preferably 0.03 to 0.45% by mass, and more preferably 0.05 to 0.4% by mass, based on the total amount of the skin cosmetic. If it is less than 0.01% by mass, pores may not be kept inconspicuous when wearing the mask, and even skin tone may not be maintained. If it exceeds 0.5% by mass, even skin tone may not be maintained.

[0026] <Component (E): Polymer Having Structural Units Derived from 2-Methacryloyloxyethyl Phosphorylcholine> In the present invention, the component (E), which is used as needed, is a polymer having structural units derived from 2-methacryloyloxyethyl phosphorylcholine. Component (E) may contain other structural units in addition to the structural units derived from 2-methacryloyloxyethyl phosphorylcholine, as long as the effects of the present invention are not impaired.

[0027] Examples of monomers constituting the other structural units include polymerizable monomers selected from linear or branched alkyl (meth)acrylates, aromatic group-containing (meth)acrylates, hydroxyl group-containing (meth)acrylates, vinyl ester monomers, acid group-containing monomers, amino group-containing monomers, and cationic group-containing monomers.

[0028] Examples of the linear or branched alkyl(meth)acrylate include methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, and butyl(meth)acrylate. Examples of aromatic group-containing (meth)acrylates include benzyl (meth)acrylate and phenoxyethyl (meth)acrylate. Examples of hydroxyl group-containing (meth)acrylates include polyethylene glycol (meth)acrylate, polypropylene glycol (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate. Examples of vinyl ester monomers include vinyl acetate and vinyl propionate. Examples of the acid group-containing monomer include (meth)acrylic acid, styrenesulfonic acid, and (meth)acryloyloxyethylphosphonic acid. Examples of the amino group-containing monomer include aminoethyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, and N,N-dimethylaminopropyl (meth)acrylamide. Examples of the cationic group-containing monomer include 2-hydroxy-3-(meth)acryloyloxypropyltrimethylammonium chloride. When the polymer of component (E) contains the other structural units, the molar ratio of the structural unit (a) derived from 2-methacryloyloxyethyl phosphorylcholine to the other structural unit (b) [(a):(b)] is preferably 1:0.1 to 1:10, more preferably 1:0.2 to 1:5.

[0029] As the monomer constituting the other structural units, a linear or branched alkyl (meth)acrylate or a hydroxyl group-containing (meth)acrylate is preferred, a linear or branched alkyl (meth)acrylate is more preferred, butyl (meth)acrylate is even more preferred, and butyl methacrylate (butyl methacrylate) is even more preferred.

[0030] Component (E) can be obtained by polymerizing a monomer composition containing at least 2-methacryloyloxyethyl phosphorylcholine, and the monomer composition may optionally contain the above-described monomers that constitute the other structural units. Component (E) in which the monomer constituting the other structural units is butyl methacrylate can be obtained by copolymerizing 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate (butyl methacrylate). The molar ratio of 2-methacryloyloxyethyl phosphorylcholine to butyl methacrylate (butyl methacrylate) in the polymer is preferably 1:0.2 to 1:3, more preferably 1:0.2 to 1:1, and even more preferably 1:0.2 to 1:0.5.

[0031] An example of a commercially available polymer having 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers is the product name "LIPIDURE-PMB" (manufactured by NOF Corporation, 80 mol% 2-methacryloyloxyethyl phosphorylcholine, 20 mol% butyl methacrylate, weight average molecular weight: 600,000).

[0032] The weight-average molecular weight of the polymer of component (E) is preferably 5,000 to 2,000,000, more preferably 100,000 to 1,000,000, even more preferably 200,000 to 800,000, and still more preferably 300,000 to 700,000. The weight-average molecular weight can be measured by gel permeation chromatography based on the measurements described in the Examples.

[0033] The content of component (E) is preferably 0.0005 to 0.25% by mass, more preferably 0.005 to 0.2% by mass, and even more preferably 0.01 to 0.1% by mass, based on the total amount of the skin cosmetic. When the content of component (E) is within this range, the skin remains lustrous and shiny, with pores less noticeable and even skin tone maintained for a long period of time, even when wearing a mask.

[0034] <Ingredient (F): Ascorbyl glucoside, tranexamic acid, niacinamide> In the present invention, the component (F) used as needed is one or more members selected from the group consisting of ascorbyl glucoside, tranexamic acid, and niacinamide. The content of component (F) is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, and even more preferably 1 to 6% by mass, based on the total amount of the skin cosmetic. When the content of component (F) is within this range, it becomes possible to maintain an even and even skin condition for a long period of time, even when wearing a mask.

[0035] <Water> The skin cosmetic of the present invention contains water in addition to the above-mentioned components (A) to (D) and, if necessary, the components (E) to (F). The water is preferably deionized water, ion-exchanged water, distilled water, or natural water with a hardness of 10 mg / L to 200 mg / L. The water content is determined by the total content of the above components (A) to (D), the optionally blended components (E) to (F), and water. The water content is preferably 60% by mass or more, more preferably 65 to 99% by mass, and particularly preferably 70 to 95% by mass, based on the total weight of the skin cosmetic.

[0036] <Component ratio: (D) / (A), (B) / (D)> From the viewpoint of keeping pores inconspicuous when wearing the mask, the ratio (D) / (A) of the content of component (D) to the content of component (A) is preferably 10 to 350, and more preferably 15 to 300. From the viewpoint of maintaining even skin tone when wearing the mask, the ratio (B) / (D) of the content of component (B) to the content of component (D) is preferably 0.15 to 50, and more preferably 0.25 to 30.

[0037] <Other added ingredients> In addition to the above components (A) to (F), the skin cosmetic of the present invention may further contain other additive components that are generally used in cosmetics. Examples of other additive components include moisturizers, oils, thickeners, pH adjusters, antioxidants, sequestering agents, fragrances, coloring materials, pigments, etc. The content of other additive components is preferably 40% by mass or less, and more preferably 30% by mass or less, of the total amount of the skin cosmetic.

[0038] The skin cosmetic of the present invention can be produced by a known method, for example, by mixing polymethoxyflavone as component (A), polyoxyalkylene methyl glucoside as component (B), glycerin or diglycerin as component (C), ethylhexylglycerin as component (D), a polymer having structural units derived from 2-methacryloyloxyethyl phosphorylcholine as component (E), one or more selected from ascorbyl glucoside, tranexamic acid, and niacinamide as component (F), and water. The skin cosmetic of the present invention can be in the form of a liquid, gel, emulsion, cream, or the like, and is used on the face, body, etc. [Example]

[0039] The present invention will be described in more detail below with reference to examples and comparative examples.

[0040] <Component (A)> First, the isolation and purification of component (A) will be explained. 100 kg of dried orange peel (Rutaceae C. sinensis) was crushed in a blender and soaked in 5 times the mass of 95% ethanol for 5 days for extraction. The extract was filtered and then concentrated under reduced pressure to obtain 450 g of orange peel extract. This orange peel extract was dissolved in 5 times the mass of ethyl acetate, and an equal amount of water to the ethyl acetate was added and stirred. After allowing to stand, the aqueous layer was removed. This procedure was repeated three times, after which the ethyl acetate was distilled off to obtain 280 g of a dry product. The dried product was then dissolved in a hexane / ethanol mixed solvent (volume ratio 85 / 15) twice the mass of the dried product to obtain a solution. The entire solution was loaded onto a column (diameter 30 cm, length 1 m) packed with silica gel. After running hexane in a volume twice the column volume through the column, a hexane / ethanol mixed solvent (volume ratio 90 / 10) was used as the eluent, and the eluate was fractionated into 1 L aliquots. Each fraction was analyzed by silica gel thin layer chromatography using a hexane / ethanol mixed solvent (volume ratio 90 / 10) as the developing solvent, and the presence of polymethoxyflavones was confirmed. The fractions containing the respective compounds were combined and the solvent was distilled off to obtain polymethoxyflavones. The yields of each compound were 13 g for heptamethoxyflavone, 9.2 g for hexamethoxyflavone, and 2.2 g for pentamethoxyflavone. Thus, polymethoxyflavones were obtained. In Table 1, the mixture of the above three types of polymethoxyflavones is referred to as polymethoxyflavones.

[0041] <Ingredient (B)> Polyoxyethylene (10 moles) methyl glucoside: Polyoxyethylene methyl glucoside with an average of 10 moles of oxyethylene groups added Polyoxypropylene (20 moles) methyl glucoside: Polyoxyethylene methyl glucoside with an average of 20 moles of oxypropylene groups

[0042] <Ingredient (E)> The following polymer 1 was used as component (E). [Polymer 1] Product name: "LIPIDURE-PMB" (NOF Corporation, 80 mol% 2-methacryloyloxyethyl phosphorylcholine, 20 mol% butyl methacrylate, weight-average molecular weight: 600,000)

[0043] The weight average molecular weight of component (E) was measured as follows. (Measurement of weight average molecular weight) The weight average molecular weight of the above polymer 1 was measured using gel permeation chromatography (GPC) under the following conditions. GPC system: EcoSEC system (manufactured by Tosoh Corporation) Columns: Shodex OHpak SB-802.5HQ (Showa Denko K.K.) and SB-806HQ (Showa Denko K.K.) connected in series Developing solvent: 20 mM sodium phosphate buffer (pH 7.4) Detector: Differential refractive index detector Molecular weight standard: EasiVial PEG / PEO (Agilent Technologies) Flow rate: 0.5mL / min Column temperature: 40℃ Sample: Dilute the above polymer 1 with the developing solvent to a final concentration of 0.1% by weight. Injection volume: 100μL

[0044] Components other than the above components (A), (C), and (E) are as described in the respective tables.

[0045] <Examples 1 to 16 and Comparative Examples 1 to 4> Skin cosmetics were prepared according to the formulations shown in Tables 1 and 2 (Examples 1 to 16) and Table 3 (Comparative Examples 1 to 4), and were evaluated by the following methods. In Tables 1 to 3, the numerical value of each component indicates the content (mass %) relative to the total amount of the skin cosmetic.

[0046] <Evaluation method> The panel consisted of 10 women between the ages of 30 and 50. After washing their faces in the morning and evening, they applied skin cosmetics to their entire faces every day. They wore masks whenever they went out for one month, and each panelist wore the mask for an average of six hours or more during the day. One month after starting to apply the skin cosmetics, they washed their faces, applied the skin cosmetics to their entire faces, and wore the mask for six hours before conducting the following evaluations (1) to (3).

[0047] (1) Evaluation of the durability of the effect of suppressing shine while adding luster After one month of use, the condition of the cheeks, which are the masked area, was evaluated using the following criteria, comparing the condition immediately after application of the skin cosmetic and the condition six hours after wearing the mask. 4 points: When there is no shine at all and it feels shiny. 3 points: No shine at all and a slight shine, or very little shine and a slight shine. 2 points: No shine at all but a little lacking in shine, or almost no shine and a little shine. 1 point: There is almost no shine, but the shine is slightly lacking. 0 points: If you feel that your skin is shiny or lacks luster.

[0048] (2) Evaluation of the persistence of pore inconspicuousness The tip of the nose, which is the mask part, was evaluated according to the following criteria. 2 points: If you feel that your pores are not noticeable at all. 1 point: If you feel that your pores are slightly less noticeable. 0 points: If you feel that your pores are noticeable.

[0049] (3) Evaluation of skin evenness The cheeks, which are part of the mask, and the corners of the eyes, which are not part of the mask, were compared and the skin evenness was evaluated according to the following criteria. The lack of unevenness in the skin was assessed by checking the difference in the condition of the skin in the masked area and the rest of the body. Specifically, the differences in skin condition were checked from the perspective of whether there was rough skin or excessive sebum secretion due to friction in the masked area, and whether there was dryness or sunburn in the rest of the body. 2 points: If you feel there is no difference at all. 1 point: If you feel there is not much difference. 0 points: If you feel there is a difference.

[0050] The evaluation of (1) above was judged according to the following criteria and shown in Tables 1 to 3. "◎" and "◯" were judged as passing. ◎: Total score is 35 points or more ○: Total score is between 30 and 34 points △: Total score is between 20 and 29 points ×: Total score is 19 points or less

[0051] The evaluations of (2) and (3) above were judged according to the following criteria and are shown in Tables 1 to 3. "Excellent" and "Good" were judged as acceptable. ◎: Total score is 18 points or more ○: Total score is between 14 and 17 points △: Total score is between 10 and 13 points ×: Total score is 9 points or less

[0052] [Table 1]

[0053] [Table 2]

[0054] [Table 3]

[0055] All of the skin cosmetics of Examples 1 to 16 had a sustained effect of suppressing shine on the skin and adding a radiant glow, even when wearing a mask, and were able to keep pores inconspicuous and maintain even skin tone.

[0056] In contrast, in Comparative Examples 1 to 4, sufficient performance was not obtained. Comparative Example 1 did not contain component (A), and therefore was insufficient in its effect of suppressing shine while adding a glossy finish to the skin when the mask was worn, and was unable to keep pores inconspicuous, and was unable to maintain even skin tone. Comparative Example 2 did not contain component (B), and therefore was insufficient in its effect of suppressing shine while adding luster to the skin when the mask was worn, and was unable to maintain even skin tone. Comparative Example 3 did not contain component (C), and therefore was insufficient in its effect of suppressing shine while adding a glossy finish to the skin when the mask was worn, and was unable to keep pores inconspicuous, and was unable to maintain even skin tone. Comparative Example 4 did not contain component (D), and therefore was unable to keep pores inconspicuous when wearing the mask, and was unable to maintain even skin tone.

[0057] Next, formulation examples of the skin cosmetics of the present invention (Formulation Examples 1 and 2) are shown. These skin cosmetics of formulation examples also had a sustained effect of suppressing shine and adding a radiant glow to the skin even when wearing a mask, and were able to keep pores inconspicuous and maintain a smooth skin tone. The amount of polymethoxyflavone in the following formulation examples is the amount of extracted polymethoxyflavone.

[0058] [Formulation Example 1] Gel-type skin cosmetic (mass%) Ingredient (A) Polymethoxyflavone: 0.02 Component (B) Polyoxyethylene (10 mol) methyl glucoside: 0.1 Component (B) Polyoxypropylene (20 mol) methyl glucoside: 0.1 Ingredient (C) Glycerin: 10 Ingredient (C) Diglycerin: 2 Ingredient (D) Ethylhexylglycerin: 0.1 Component (E) Polymer 1:0.1 Ingredient (F) Ascorbyl Glucoside: 2 Ingredient (F) Tranexamic acid: 2 Pentylene glycol: 2 Dipropylene glycol: 6 Phenoxyethanol: 0.3 Carboxyvinyl polymer: 0.1 Alkyl-modified carboxyvinyl polymer: 0.1 Starch-sodium acrylate graft polymer: 0.1 Gellan gum: 0.1 Arginine: 0.1 Alanine: 0.01 Glutamic acid: 0.01 Serine: 0.01 Proline: 0.01 N-Stearoyl Phytosphingosine: 0.0001 Sodium hyaluronate: 0.001 Dipotassium glycyrrhizinate: 0.01 Polysorbate 80:0.2 PEG-60 hydrogenated castor oil: 0.2 Fragrance: Appropriate amount Water: Remaining

[0059] [Formulation Example 2] Emulsion-type skin cosmetic (mass%) Ingredient (A) Polymethoxyflavone: 0.005 Component (B) Polyoxyethylene (10 mol) methyl glucoside: 2 Component (B) Polyoxypropylene (20 mol) methyl glucoside: 0.5 Ingredient (C) Glycerin: 2 Ingredient (C) Diglycerin: 1 Ingredient (D) Ethylhexylglycerin: 0.2 Component (E) Polymer 1:0.05 Ingredient (F) Niacinamide: 5 Butylene Glycol: 6 Carboxyvinyl polymer: 0.1 Alkyl-modified carboxyvinyl polymer: 0.1 Starch-sodium acrylate graft polymer: 0.1 Gellan gum: 0.1 Arginine: 0.1 Alanine: 0.01 Glutamic acid: 0.01 Serine: 0.01 Proline: 0.01 N-Stearoyl Phytosphingosine: 0.0001 Sodium hyaluronate: 0.001 Dipotassium glycyrrhizinate: 0.01 Polysorbate 80:0.5 PEG-75 stearate: 0.5 Glyceryl stearate: 1 Behenyl alcohol: 1 Olive fruit oil: 6 Cetyl ethylhexanoate: 6 Dimethicone: 3 Tocopherol: 0.1 Phenoxyethanol: 0.3 Fragrance: Appropriate amount Water: remaining amount

Claims

1. A skin cosmetic containing the following components (A), (B), (C), and (D). (A) 0.0001 to 0.05% by mass of one or more polymethoxyflavones (B) 0.01 to 5% by mass of polyoxyalkylene methyl glucoside (C) 0.5 to 20% by mass of at least one selected from the group consisting of glycerin and diglycerin (D) 0.01 to 0.5% by mass of ethylhexylglycerin

2. 2. The skin cosmetic preparation according to claim 1, comprising the following component (E): (E) 0.0005 to 0.25% by mass of a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine

3. 3. The skin cosmetic preparation according to claim 1, further comprising the following component (F): (F) 0.1 to 10% by mass of one or more selected from ascorbyl glucoside, tranexamic acid, and niacinamide

Images