Skin cosmetics

Abstract

This skin cosmetic provides a pleasant feel upon application, leaves the skin feeling plump after application, and maintains a smooth and plump skin condition even after wearing a mask. [Solution] A skin cosmetic is provided that is free of dihydric alcohols having 6 or more carbon atoms and phenoxyethanol, characterized by containing (A) 1 to 20% by mass of 1,3-propanediol, (B) 0.5 to 4% by mass of 1,2-pentanediol, (C) 0.01 to 0.5% by mass of glycerin mono-2-ethylhexyl ether, and (D) 0.00001 to 0.001% by mass of ceramide.

Description

Technical Field

[0001] The present invention relates to a skin cosmetic used for moisturizing the skin of the face, body, etc.

Background Art

[0002] Various moisturizing agents are formulated in skin cosmetics for moisturizing the skin. However, when using a skin cosmetic with a high content of a moisturizing agent, there is a problem of feeling sticky. When feeling sticky, the comfort during application decreases, so it is desired to reduce stickiness.

[0003] For the purpose of enhancing the storage stability of cosmetics, preservatives such as parabens and phenoxyethanol are formulated in skin cosmetics, but these preservatives may cause irritation during application. Also, dihydric alcohols having 6 or more carbon atoms are formulated for the purpose of enhancing the preservative property of skin cosmetics, but dihydric alcohols having 6 or more carbon atoms may also cause irritation. Irritation during application is a factor in the decrease in comfort during application.

[0004] In recent years, the number of consumers who consider their own skin to be sensitive has been increasing, and for cosmetics for sensitive skin targeting such people, it has been required to formulate no ingredients that cause irritation. For this reason, Patent Document 1 discloses a low-irritation cosmetic containing at least three or more preservatives excluding phenoxyethanol, paraoxybenzoic acid ester, and 1,2-hexanediol.

[0005] On the other hand, when the skin has firmness, wrinkles and sagging are less noticeable, and a youthful impression can be given. Ceramide exists as a main component of intercellular lipids in the skin, is greatly involved in the barrier function, and is suitable as a component that gives the skin a plump feeling. Patent Document 2 discloses that a cosmetic preparation containing N-acyl-phytosphingosine and 1,2-pentanediol plumps the skin.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2023-102152 [Patent Document 2] Special Publication No. 2014-532675 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, because ceramides are highly crystalline and poorly compatible with both water and oil, increasing the amount of solvent components required to incorporate ceramides can lead to stickiness, or ceramide precipitation can cause a rough texture. Since stickiness and roughness reduce the pleasant feeling during application, it has not been easy to achieve both a pleasant feeling during application and a plumping sensation after application in cosmetics containing ceramides.

[0008] Furthermore, in recent years, opportunities to wear masks have increased. However, when wearing a mask, the friction between the skin and the mask weakens the skin's barrier function, leading to dryness, and increased sebum secretion due to mask wear can cause stickiness. Therefore, there is a need for skin cosmetics that maintain a smooth and plump skin condition even after wearing a mask.

[0009] As described above, a skin cosmetic that is pleasant to apply, provides a plumping effect after application, and maintains a smooth and plump skin condition even after wearing a mask has yet to be developed.

[0010] The object of the present invention is to provide a skin cosmetic that is pleasant to apply, provides a plumping sensation after application, and maintains a smooth and plump skin condition even after wearing a mask. [Means for solving the problem]

[0011] To solve the above problems, the inventors diligently conducted research and found that by adding predetermined amounts of glycerin mono-2-ethylhexyl ether and ceramide to a cosmetic product containing predetermined amounts of 1,3-propanediol and 1,2-pentanediol, the product provides excellent comfort during application, a plumping sensation after application, and maintains a smooth and plump skin condition even after wearing a mask. This led to the completion of the present invention.

[0012] In other words, the present invention relates to the following [1], [2] and [3]. [1](A)1,3-propanediol in 1 to 20% by mass, (B) 1,2-pentanediol in an amount of 0.5 to 4% by mass, (C) Glycerin mono-2-ethylhexyl ether in a concentration of 0.01-0.5% by mass, and (D) Ceramide in a quantity of 0.00001 to 0.001% by mass A skin cosmetic characterized by containing a dihydric alcohol with 6 or more carbon atoms and free from phenoxyethanol. [2] (E) A skin cosmetic according to [1], characterized by containing 0.1 to 10% by mass of one or more components selected from the group consisting of ascorbic acid 2-glucoside, tranexamic acid, and nicotinamide. [3] A skin cosmetic according to [1] or [2], characterized by containing 0.0001 to 0.2% by mass of a polymer having a structural unit derived from (F)2-methacryloyloxyethyl phosphorylcholine. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a skin cosmetic that is pleasant to apply, leaves the skin feeling plump after application, and maintains a smooth and plump skin condition even after wearing a mask. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described below. In this specification, numerical ranges defined using the symbol "~" include the numbers at both ends (upper and lower limits) of "~". For example, "2~5" means 2 or more and 5 or less.

[0015] The present invention relates to a skin cosmetic containing each of the above-mentioned components in a specific proportion (hereinafter also referred to as the skin cosmetic of the present invention). In the present invention, "skin cosmetic" refers to a cosmetic applied to the skin directly or indirectly by application or spraying, and specifically includes basic cosmetics such as lotions, emulsions, and creams, and medicated cosmetics (quasi-drugs).

[0016] The present invention relates to a low-irritation skin cosmetic that does not contain phenoxyethanol as a preservative and does not contain a dihydric alcohol with 6 or more carbon atoms as a moisturizer. When a skin cosmetic contains phenoxyethanol or a dihydric alcohol with 6 or more carbon atoms, it is irritating and the comfort upon application is inferior. More preferably, the skin cosmetic is a paraben-free low-irritation skin cosmetic that does not contain parahydroxybenzoic acid esters as a preservative.

[0017] <(A): 1,3-propanediol> The content of 1,3-propanediol shall be 1 to 20% by mass relative to the total amount of skin cosmetic. If the content of 1,3-propanediol is less than 1% by mass, the comfort upon application may be insufficient, the plumping effect after application may decrease, or the smooth and plump skin condition may not be maintained after wearing a mask. Therefore, it should be 1% by mass or more, preferably 2% by mass or more, and even more preferably 3% by mass or more. Furthermore, if the content of 1,3-propanediol exceeds 20% by mass, the comfort upon application may be insufficient. Therefore, it should be 20% by mass or less, preferably 18% by mass or less, and even more preferably 16% by mass or less.

[0018] <(B): 1,2-pentanediol> The content of 1,2 - pentanediol shall be 0.5 to 4% by mass based on the total amount of the skin cosmetic. If the content of 1,2 - pentanediol is less than 0.5% by mass, there may be cases where the comfort during application is insufficient, the plumpness after application decreases, or the smooth and plump skin condition cannot be maintained after wearing a mask. Therefore, it shall be 0.5% by mass or more, preferably 1% by mass or more, and more preferably 1.5% by mass or more. Also, if the content of 1,2 - pentanediol exceeds 4% by mass, there may be cases where the comfort during application is insufficient or the smooth and plump skin condition cannot be maintained after wearing a mask. Therefore, it shall be 4% by mass or less, preferably 3.5% by mass or less, and more preferably 3% by mass or less.

[0019] <(C): Glyceryl mono 2 - ethylhexyl ether> The content of glyceryl mono 2 - ethylhexyl ether shall be 0.01 to 0.5% by mass based on the total amount of the skin cosmetic. If the content of glyceryl mono 2 - ethylhexyl ether is less than 0.01% by mass, there may be cases where the comfort during application is insufficient or the smooth and plump skin condition cannot be maintained after wearing a mask. Therefore, it shall be 0.01% by mass or more, preferably 0.03% by mass or more, and more preferably 0.05% by mass or more. Also, if the content of glyceryl mono 2 - ethylhexyl ether exceeds 0.5% by mass, there may be cases where the comfort during application is insufficient or the smooth and plump skin condition cannot be maintained after wearing a mask. Therefore, it shall be 0.5% by mass or less, preferably 0.45% by mass or less, and more preferably 0.4% by mass or less.

[0020] <(D): Ceramide> Component (D) used in the present invention is ceramide, and it is not limited as long as it can be used in ordinary cosmetics, etc., but can be defined as follows. That is, ceramide is a series of compounds expressed as non - ionic amphiphilic substances having one or more long - chain linear and / or branched alkyl groups or long - chain linear and / or branched alkenyl groups in the molecule, further having at least two or more hydroxyl groups, and having one or more amide groups and / or amino groups.

[0021] (D) Ceramide may be a natural extract or a synthetic compound. Examples include ceramides derived from natural sources (such as ceramides derived from animals, plants, and microorganisms), and ceramides produced by synthetic methods. Specific examples of ceramides also include ceramide 1, ceramide 2, ceramide 3, ceramide 3B, ceramide 4, ceramide 5, ceramide 6, ceramide 6I, and ceramide 6II. These are classified as natural ceramides. The numbers after ceramide represent the type of ceramide. Also, examples of ceramides include ceramide NP, ceramide NG, and ceramide NS. The alphabetical notations after ceramide represent the combination of fatty acid and sphingoid. Note that, as described above, there are multiple notations for ceramides, such as classification notations by function or origin (e.g., ceramide 2) and classification notations by structure (e.g., ceramide NS). There may be duplicates for some components by multiple notations, but the ceramides used in the present invention are not limited by such notations.

[0022] Furthermore, ceramide may be in the form of a mixture of any mixing ratio of isomers that each ceramide can take, or may be in the form of a specific isomer. These ceramides can be used in combination of one or more of the above specific examples. In the present invention, among the above ceramides, ceramide AP, ceramide EOP, ceramide NP, or ceramide NG is preferable, ceramide NP or ceramide NG is more preferable, and ceramide NP is particularly preferable.

[0023] (D) The ceramide content shall be 0.00001 to 0.001% by mass relative to the total amount of skin cosmetic. If the ceramide content is less than 0.00001% by mass, the plumping effect after application may decrease, or the smooth and plump skin condition may not be maintained after wearing a mask. Therefore, it should be 0.00001% by mass or more, preferably 0.00003% by mass or more, and even more preferably 0.00005% by mass or more. Also, if the ceramide content exceeds 0.001% by mass, the comfort upon application may be insufficient. Therefore, it should be 0.001% by mass or less, preferably 0.0008% by mass or less, and even more preferably 0.0005% by mass or less.

[0024] From the viewpoint of improving the comfort during application and the plumping sensation after application, the mass ratio ((B) / (D)) of the content of (D) ceramide to the content of (B) 1,2-pentanediol is preferably 2,000 to 100,000, more preferably 5,000 to 50,000, and particularly preferably 15,000 to 30,000.

[0025] From the viewpoint of maintaining a smooth and plump skin condition after wearing a mask, the mass ratio ((C) / (D)) of the content of (D) ceramide to the content of (C) glycerin mono-2-ethylhexyl ether is preferably 100 to 10000, more preferably 500 to 6000, and particularly preferably 1000 to 4000.

[0026] <(E): One or more components selected from ascorbic acid 2-glucoside, tranexamic acid, and nicotinamide> The component (E) used in the present invention is one or more components selected from ascorbic acid 2-glucoside, tranexamic acid, and nicotinamide, and is preferably nicotinamide.

[0027] The content of ingredient (E) is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, and even more preferably 0.8 to 6% by mass, relative to the total amount of skin cosmetic. When the content of ingredient (E) is within the above range, the effect of maintaining a plump feeling after application and a smooth and plump skin condition after wearing the mask is further improved.

[0028] <(F): A polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine> The component (F) used in the present invention is a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine.

[0029] (F) The polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine may be a homopolymer. Alternatively, it may be a copolymer containing other structural units other than the structural unit derived from 2-methacryloyloxyethyl phosphorylcholine, to the extent that the effects of the present invention are not impaired.

[0030] Other monomers that constitute the constituent 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.

[0031] Examples of linear or branched alkyl (meth)acrylates include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate.

[0032] Examples of aromatic group-containing (meth)acrylates include benzyl (meth)acrylate and phenoxyethyl (meth)acrylate.

[0033] 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.

[0034] Examples of acid group-containing monomers include (meth)acrylic acid, styrene sulfonic acid, and (meth)acryloyloxyethylphosphonic acid.

[0035] Examples of amino group-containing monomers include aminoethyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, and N,N-dimethylaminopropyl (meth)acrylamide. Examples of monomers containing cationic groups include 2-hydroxy-3-(meth)acryloyloxypropyltrimethylammonium chloride.

[0036] (F) When a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine contains the other structural units, the molar ratio [(a):(b)] of the structural unit derived from 2-methacryloyloxyethyl phosphorylcholine (a) to the other structural units (b) is preferably 1:0.1 to 1:10, and more preferably 1:0.2 to 1:5.

[0037] The monomers constituting the other structural units are preferably linear or branched alkyl (meth)acrylates and hydroxyl group-containing (meth)acrylates, more preferably linear or branched alkyl (meth)acrylates, even more preferably butyl (meth)acrylates, and even more preferably butyl methacrylate (butyl methacrylate).

[0038] (F) A polymer having a constituent unit derived from 2-methacryloyloxyethyl phosphorylcholine can be obtained by polymerizing a monomer composition containing at least 2-methacryloyloxyethyl phosphorylcholine. The monomer composition may optionally contain monomers that constitute the other constituent units described above.

[0039] Component (F), in which the monomer constituting the other structural units is butyl methacrylate, can be obtained by copolymerizing 2-methacryloyloxyethyl phosphorylcholine with butyl methacrylate (butyl methacrylate).

[0040] A commercially available polymer containing 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers is the trade name "LIPIDURE-PMB" [manufactured by NOF Corporation, 80 mol% 2-methacryloyloxyethyl phosphorylcholine, 20 mol% butyl methacrylate, weight-average molecular weight: 600,000].

[0041] The weight-average molecular weight of the polymer having a constituent unit derived from (F)2-methacryloyloxyethyl phosphorylcholine 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 even 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.

[0042] The content of polymers having structural units derived from (F)2-methacryloyloxyethyl phosphorylcholine is preferably 0.0001 to 0.2% by mass, more preferably 0.0005 to 0.15% by mass, and even more preferably 0.001 to 0.1% by mass, relative to the total amount of skin cosmetic. When the content of polymers having structural units derived from (F)2-methacryloyloxyethyl phosphorylcholine is within the above range, the pleasant feeling upon application and the effect of maintaining a smooth and plump skin condition after wearing the mask are further improved.

[0043] The water content in the skin cosmetic composition of the present invention is preferably 45 to 97% by mass, more preferably 50 to 95% by mass, and particularly preferably 55 to 93% by mass. In addition to ion-exchanged water and distilled water, natural water containing minerals, aromatic water such as rose water, and fermented liquids such as rice bran fermentation liquid obtained by fermenting rice bran with yeast can also be used as water.

[0044] <Other additives> In addition to the above-mentioned components and water, the skin cosmetic composition of the present invention may further contain other common cosmetic ingredients as additives.

[0045] Other additives include, for example, humectants ((A) 1,3-propanediol, (B) 1,2-pentanediol and humectants excluding dihydric alcohols with 6 or more carbon atoms); oils; surfactants; preservatives (preservatives excluding phenoxyethanol); thickeners; pH adjusters; antioxidants; chelating agents; fragrances; dyes; pigments; amino acids; plant extracts, etc. The content of other additives is preferably 40% by mass or less, and more preferably 30% by mass or less, based on the total amount of the skin cosmetic.

[0046] The skin cosmetic composition of the present invention can be manufactured by known methods. For example, the skin cosmetic composition of the present invention can be manufactured by mixing (A) 1,3-propanediol, (B) 1,2-pentanediol, (C) glycerin mono-2-ethylhexyl ether, (D) ceramide, and optionally (E) one or more components selected from ascorbic acid 2-glucoside, tranexamic acid, and nicotinamide, and (F) a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine, and adjusting the pH to an optimal level as appropriate.

[0047] The skin cosmetic composition of the present invention can be in the form of a liquid, gel, emulsion, cream, etc., and can be used on the face, body, etc. [Examples]

[0048] The present invention will be described in more detail below with reference to examples and comparative examples. <(F)2-methacryloyloxyethyl phosphorylcholine-derived polymer> (F) The following polymer 1 was used as a polymer having a constituent unit derived from 2-methacryloyloxyethyl phosphorylcholine. [Polymer 1] Product name: "LIPIDURE-PMB" [Manufactured by NOF Corporation, 80 mol% 2-methacryloyloxyethyl phosphorylcholine, 20 mol% butyl methacrylate, weight-average molecular weight: 600,000]

[0049] The weight-average molecular weight of polymers having constituent units derived from (F)2-methacryloyloxyethyl phosphorylcholine was measured as follows.

[0050] (Measurement of weight-average molecular weight) The weight-average molecular weight of polymer 1 described above 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 (manufactured by Showa Denko K.K.) and SB-806HQ (manufactured by 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 (manufactured by Agilent Technologies) Flow rate: 0.5mL / min Column temperature: 40℃ Sample: Dilute polymer 1 above with the developing solvent to a final concentration of 0.1% by weight. Injection volume: 100μL

[0051] The components other than the polymer having a structural unit derived from (F)2-methacryloyloxyethyl phosphorylcholine are as described in each table.

[0052] <Examples 1-17, Comparative Examples 1-6> The skin cosmetics shown in Tables 1 to 4 were prepared by known methods and evaluated by the following methods. In Tables 1 to 4, the values ​​for each component represent the content (mass %) relative to the total amount of the skin cosmetic. Furthermore, (B) / (D) indicates the mass ratio of the content of (D) ceramide to the content of (B) 1,2-pentanediol. (C) / (D) indicates the mass ratio of the content of (D) ceramide to the content of (C) glycerin mono-2-ethylhexyl ether.

[0053] <Evaluation Method> (1) Evaluation of comfort during application Twenty women aged 25 to 55 served as panelists. They took 1g of skin cosmetic in their palm and applied it to their face, evaluating the pleasant feeling according to the following criteria. 2 points: If it feels very comfortable, with no stickiness or irritation, and leaves a smooth skin feel. 1 point: If it feels smooth and comfortable on the skin with little to no stickiness or irritation. 0 points: If you experience stickiness, irritation, or if the product does not feel smooth on your skin and is otherwise unpleasant.

[0054] (2) Evaluation of plumpness after application Twenty women aged 25 to 55 served as panelists. They took 1g of skin cosmetic in their palms and applied it to their faces, then evaluated the plumping effect according to the following criteria. 2 points: If you feel that your skin is very soft, elastic, and very plump. 1 point: If you feel your skin is soft, elastic, and plump. 0 points: If you feel that your skin lacks softness, elasticity, and plumpness.

[0055] (3) Evaluation of the persistence of smooth and plump skin condition after wearing a mask. Twenty women aged 25 to 55 served as panelists. They applied 1g of skin cosmetic to their face using their palms, and after wearing a mask for two hours, they evaluated the smooth and plump condition of their skin according to the following criteria. 2. If you feel that your skin condition, including its smoothness and plumpness, has hardly changed compared to before wearing the mask. 1 point: If you feel that your skin condition has not changed much in terms of smoothness and plumpness compared to before wearing the mask. 0 points: If you feel that the smoothness or plumpness has decreased compared to before wearing the mask.

[0056] The sum of each panelist's scores from the evaluations in (1) to (3) above was judged according to the following criteria and is shown in Tables 1 to 4. "◎" and "○" were judged as passing. ◎: Total score of 35 points or more ○: Total score of 30 points or more, and 34 points or less. △: Total score is between 20 and 29 points. ×: Total score is 19 points or less

[0057] [Table 1]

[0058] [Table 2]

[0059] [Table 3]

[0060] [Table 4]

[0061] As shown in Tables 1 to 3, all of the skin cosmetics in Examples 1 to 17 provided excellent comfort during application, left the skin feeling plump after application, and maintained a smooth and plump skin condition even after wearing a mask.

[0062] In contrast, as shown in Table 4, sufficient performance was not achieved in Comparative Examples 1 to 6.

[0063] Comparative Example 1 did not contain (A) 1,3-propanediol, but instead contained 1,3-butanediol, resulting in an insufficient feeling of comfort upon application, and the smooth and plump skin condition could not be maintained after wearing the mask. Comparative Example 2, lacking (B) 1,2-pentanediol, provided insufficient comfort during application and a lack of plumpness after application, and the smooth and plump skin condition could not be maintained after wearing the mask. Comparative Example 3, lacking (C) glycerin mono-2-ethylhexyl ether, was not comfortable to apply, and the smooth and plump skin condition could not be maintained after wearing the mask. Comparative Example 4, lacking (D) ceramide, did not provide sufficient plumping after application, and the smooth and plump skin condition could not be maintained after wearing the mask. Comparative Example 5 contains predetermined amounts of components (A), (B), (C), and (D), but also contains dipropylene glycol, a dihydric alcohol with 6 or more carbon atoms, resulting in an insufficient pleasant feel during application. Comparative Example 6 contains predetermined amounts of ingredients (A), (B), (C), and (D), but also contains phenoxyethanol, resulting in insufficient comfort upon application and failure to maintain a smooth and plump skin condition after wearing the mask.

[0064] Next, examples of formulations of the skin cosmetic of the present invention (Formulation Examples 1 and 2) are shown. These formulations of skin cosmetic also provided excellent comfort upon application, left the skin feeling plump after application, and maintained a smooth and plump skin condition even after wearing a mask.

[0065] [Prescription Example 1] (Gel-type skin cosmetic: mass %) (A) 1,3-Propanediol: 10 (B) 1,2-pentanediol: 2 (C) Glycerin mono-2-ethylhexyl ether: 0.2 (D) Ceramide NP: 0.0001 (E) Nicotinamide: 5 (F) Polymer 1: 0.1 Sodium hyaluronate: 0.01 1,3-Butanediol: 4 Glycerin: 5 Diglycerin: 1 Polysorbate 80: 0.4 Carboxyvinyl polymer: 0.2 Alkyl-modified carboxyvinyl polymer: 0.2 Arginine: 0.2 Glutamic acid: 0.001 Serine: 0.001 Proline: 0.001 Alanine: 0.001 Lemon juice extract: 0.001 Grapefruit fruit extract: 0.001 Fragrance: Appropriate amount Water: Remaining amount

[0066] [Prescription Example 2] (Emulsion-type skin cosmetic: mass %) (A) 1,3-propanediol: 8 (B) 1,2-pentanediol: 2 (C) Glycerin mono-2-ethylhexyl ether: 0.3 (D) Ceramide NP: 0.0001 (D) Ceramide NG: 0.0001 (D) Ceramide AP: 0.0001 (E) Ascorbic acid 2-glucoside: 2 (F) Polymer 1: 0.15 Dipotassium glycyrrhizinate: 0.1 Sodium hyaluronate: 0.01 1,3-Butanediol: 4 Glycerin: 5 Diglycerin: 1 Carboxyvinyl polymer: 0.1 Alkyl-modified carboxyvinyl polymer: 0.1 Arginine: 0.1 Polysorbate 80: 0.5 PEG-75 stearate: 0.5 Glyceryl stearate: 1 Behenyl alcohol: 1 Olive fruit oil: 6 Cetyl ethylhexanoate: 6 Tocopherol: 0.1 Glutamic acid: 0.001 Serine: 0.001 Proline: 0.001 Alanine: 0.001 Shikuwasa peel extract: 0.001 Yuzu fruit extract: 0.001 Fragrance: Appropriate amount Water: Remaining amount [Industrial applicability]

[0067] According to the present invention, it is possible to provide a skin cosmetic that is pleasant to apply, leaves the skin feeling plump after application, and maintains a smooth and plump skin condition even after wearing a mask.

Claims

1. (A) 1,3-propanediol in an amount of 1 to 20% by mass, (B) 1,2-pentanediol in an amount of 0.5 to 4% by mass, (C) 0.01 to 0.5% by mass of glycerin mono-2-ethylhexyl ether, and (D) Ceramide in a quantity of 0.00001 to 0.001% by mass A skin cosmetic characterized by containing a dihydric alcohol with 6 or more carbon atoms and free from phenoxyethanol.

2. (E) The skin cosmetic composition according to claim 1, characterized by containing 0.1 to 10% by mass of one or more components selected from the group consisting of ascorbic acid 2-glucoside, tranexamic acid, and nicotinamide.

3. (F) A skin cosmetic composition according to claim 1 or 2, characterized by containing 0.0001 to 0.2% by mass of a polymer having a structural unit derived from 2-methacryloyloxyethyl phosphorylcholine.

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