Skin cosmetics

Abstract

To provide a skin cosmetic that contains natural water and solid anti-inflammatory ingredients, is excellent in storage stability and a smooth feel during application, and provides the same feeling of use as the first application even when applied in layers, thereby solving the problem in which a skin cosmetic that contains natural water and solid anti-inflammatory ingredients, is excellent in storage stability and a smooth feel during application and provides little difference in a feeling of use when applied in layers has not yet been developed.SOLUTION: A skin cosmetic contains the following ingredients (A), (B), (C) and (D): (A) 10 to 98 mass% of natural water with a hardness of 10 to 200 mg / L; (B) 0.001 to 10 mass% of a crystalline solid with an anti-inflammatory effect whose solubility in water at 25°C is 0.5% or more; (C) 1 to 25 mass% of a C3-6 dihydric alcohol; and (D) 0.00001 to 0.05 mass% of acidic mucopolysaccharide.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] The water commonly used in skin cosmetics is ion-exchanged water, which is made by removing impurities such as metal ions using ion exchange resins, from tap water that has been collected from rivers and purified. Some of the components removed by ion exchange resins include natural moisturizing factors (NMFs) such as calcium ions and magnesium ions. NMF plays an important role in maintaining healthy skin, and in addition to mineral salts such as calcium ions and magnesium ions, it contains amino acids, pyrrolidone carboxylic acid (and its salts), urea, lactic acid, and other organic acids (and their salts), and it is known that when the amount of NMF in the stratum corneum decreases, the skin's moisturizing function decreases, making it more susceptible to dry skin.

[0003] The effectiveness of mineral salts such as calcium ions and magnesium ions in moisturizing the skin is widely recognized, as seen in cosmetics that use sea mud rich in mineral salts (Patent Document 1). Clay packs containing clay minerals are known as formulations that effectively utilize mineral salts. However, when mineral salts (especially divalent or higher mineral salts) are incorporated into aqueous skin cosmetics, they can cause substances that are dissolved in water to bond together, resulting in water-insoluble substances. Therefore, when natural water rich in mineral salts is used in skin cosmetics, there is a risk that the mineral salts contained in the natural water may cause insoluble matter to form. Insoluble matter generated in skin cosmetics not only deteriorates the appearance due to precipitation, but can also cause roughness upon application, impairing the smooth feel of application.

[0004] A smooth application sensation means a smooth feeling without any roughness or squeaking when applied to the skin. To achieve a smooth application sensation, it is important to reduce the roughness and squeaking caused by the cosmetic as well as to improve the skin texture. Rough and uneven skin does not have a smooth application sensation, whereas skin with a fine texture and smooth surface is more likely to have a smooth application sensation. Skin roughness caused by stress or external stimuli can cause the skin texture to become rough, so preventing skin roughness is important in improving skin texture, and anti-inflammatory ingredients are known to prevent skin roughness.

[0005] Allantoin, dipotassium glycyrrhizinate, tranexamic acid, and niacinamide are widely used as anti-inflammatory ingredients in cosmetics. These ingredients are water-soluble solids, and due to storage temperatures (low or high), evaporation of water, and other factors, they precipitate in cosmetics. Preventing this precipitation presents a challenge. Various solutions to this problem have been found for compositions containing ion-exchanged water, as described in Patent Documents 2 to 5. However, methods for preventing the precipitation of allantoin, dipotassium glycyrrhizinate, tranexamic acid, and niacinamide in cosmetics containing natural water have not been known. In cosmetics containing natural water, the mineral salts contained in the natural water sometimes promote the precipitation of allantoin, dipotassium glycyrrhizinate, tranexamic acid, and niacinamide. Precipitation of these ingredients can lead to a poor cosmetic appearance and a lack of a smooth feel upon application.

[0006] The smooth application feeling is affected not only by the skin condition such as texture, but also by whether or not cosmetics are applied to the skin. In other words, the application feeling on skin without cosmetics may be different from the application feeling on skin with cosmetics applied. In general skin care, lotion, emulsion, serum, cream, etc. are used in combination, and the skin care time is shortened or the amount of use is reduced. In order to reduce the number of skin care items used, all-in-one cosmetics are often used. However, applying these cosmetics only once may not provide sufficient moisturizing effect. Therefore, to enhance the moisturizing effect, cosmetics are sometimes used by allowing them to soak in once and then reapplying them. When applying multiple layers in this way, the first application provides a smooth feel, but the second application may tend to feel sticky due to the previously applied cosmetics. Therefore, a cosmetic product with a minimal difference in feel when used has been desired. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-233722 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-121092 [Patent Document 3] Japanese Patent Application Publication No. 2018-52914 [Patent Document 4] Japanese Patent Application Publication No. 2019-199468 [Patent Document 5] Japanese Patent Publication No. 2022-82669 Summary of the Invention [Problem to be solved by the invention]

[0008] In light of the current situation where no skin cosmetic has yet been developed that contains natural water and a solid anti-inflammatory component, has excellent storage stability and a smooth feel upon application, and provides little difference in feel upon application when applied in multiple layers, the object of the present invention is to provide a skin cosmetic that contains natural water and a solid anti-inflammatory component, has excellent storage stability and a smooth feel upon application, and provides the same feel upon application as when it was first applied, even when applied in multiple layers. [Means for solving the problem]

[0009] In order to solve the above problems, the inventors conducted extensive research and discovered that simply adding a specific alcohol and an acidic mucopolysaccharide to a cosmetic product containing natural water of a specific hardness and a crystalline anti-inflammatory ingredient unexpectedly results in excellent storage stability and a smooth feel upon application, with the feel remaining almost unchanged even when reapplied. Further research led to the completion of the present invention.

[0010] The present invention relates to the following [1] and [2]. [1] A skin cosmetic comprising: 10 to 98 mass% of component (A) natural water having a hardness of 10 to 200 mg / L; 0.001 to 10 mass% of component (B) a crystalline solid having a solubility in water of 0.5% or more at 25°C and having an anti-inflammatory effect; 1 to 25 mass% of component (C) a dihydric alcohol having 3 to 6 carbon atoms; and 0.00001 to 0.05 mass% of component (D) an acidic mucopolysaccharide. [2] The skin cosmetic composition according to the above item [1], containing 0.01 to 10% by mass of component (E) an alkylene oxide derivative represented by the following formula (1):

[0011] [ka]

[0012] In formula (1), Z is a residue obtained by removing all hydroxyl groups from a compound having 1 to 7 carbon atoms and 1 to 4 hydroxyl groups. x represents an integer of 1 to 4. EO is an oxyethylene group. PO is an oxypropylene group. BO is an oxybutylene group. a is the average number of moles of the oxyethylene group added, and is 0≦a≦100; b is the average number of moles of the oxypropylene group added, and is 0≦b≦60; and c is the average number of moles of the oxybutylene group added, and is 0≦c≦5. However, a, b, and c are not all 0 at the same time. When neither a nor b is 0, (a / b) is 1 / 5 to 7 / 1. EO, PO, and BO may be added randomly or in blocks, or may be added randomly. The mixture of the block and the non-blocking portions is also acceptable. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a skin cosmetic that contains natural water and a crystalline solid anti-inflammatory component, has excellent storage stability and a smooth feel when applied, and does not change the feel when used even when applied multiple times. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described. The present invention relates to a skin cosmetic containing the above-mentioned components (A), (B), (C) and (D) in specific proportions (hereinafter also referred to as the skin cosmetic of the present invention). In the present invention, "skin cosmetics" refer to cosmetics that are applied by direct or indirect application or spraying onto the skin, and specific examples include skin care products such as lotions, emulsions, and creams, finishing (makeup) cosmetics such as foundations, fragranced cosmetics, medicated cosmetics (quasi-drugs), etc. Of these, skin care products and medicated cosmetics that keep the skin clean and healthy are preferred. In this specification, numerical ranges defined using the symbol "to" are inclusive of the numerical values ​​at both ends (upper and lower limits) of the symbol "to." For example, "2 to 5" means 2 or more and 5 or less.

[0015] <Component (A): Natural water with a hardness of 10 to 200 mg / L> The component (A) used in the present invention is natural water having a hardness of 10 mg / L to 200 mg / L calculated from the content of calcium salts and magnesium salts. There are no particular limitations on the natural water as long as it has the above-mentioned specific hardness, and examples include shallow well water, deep well water, spring water, mineral water, hot spring water, underground water, mineral water, etc., as classified in "2. Labeling Method" of the Notice from the Director-General of the Food Distribution Bureau issued on March 30, 1990. Any of these natural waters may be used alone, or two or more may be used in combination. Furthermore, these natural waters may be used as they are after collection, or may be subjected to filtration sterilization, heat sterilization, ozone sterilization, ultraviolet sterilization, etc. after collection.

[0016] In the present invention, hardness is the amount of calcium and magnesium converted into the amount of calcium carbonate (CaCO3), expressed in mg / L, and can be calculated using the following simplified formula (2) (atomic weights: Ca = 40, Mg = 24.3, molecular weight: CaCO3 = 100). Hardness [mg / L] = (Calcium content [mg / L] × 2.5) + (Magnesium content [mg / L] × 4.1) (2)

[0017] In the present invention, component (A) has a hardness calculated from the above formula (2) in the range of 10 mg / L to 200 mg / L, preferably 15 mg / L to 150 mg / L, and more preferably 20 mg / L to 100 mg / L. If the hardness is less than 10 mg / L, the smooth feel upon application may be insufficient, and there may be a large difference in the feel upon application when multiple applications are performed. If the hardness exceeds 200 mg / L, there may be a decrease in stability at low and high temperatures, and there may be an insufficient smooth feel upon application. The difference in feel during use refers to the difference in feel in terms of smoothness and non-stickiness compared to when the product was first applied to the skin. Therefore, a small difference in feel during use means that the change in feel is small compared to when the product was first applied (almost the same), and a large difference in feel during use means that the change in feel is large compared to when the product was first applied (a decrease in smoothness or an increase in stickiness).

[0018] The content of component (A) is 10 to 98% by mass, preferably 20 to 95% by mass, and more preferably 30 to 90% by mass, based on the total amount of the skin cosmetic. If the content is less than 10% by mass, the smooth feel upon application may be insufficient, and the difference in feel upon application may be significant when multiple coats are applied.If the content of component (A) exceeds 98% by mass, the effect commensurate with the amount blended will not be obtained.

[0019] <Component (B): A crystalline solid with a solubility of 0.5% or more in water at 25°C and anti-inflammatory effects> Component (B) used in the present invention is a crystalline solid that has an anti-inflammatory effect and a solubility in water of 0.5% or more at 25°C. The solubility of this crystalline solid in water is defined as 0.5% when up to 0.5 g of the crystalline solid dissolves in 100 g of water. The upper limit is preferably 200% or less, and more preferably 100% or less.

[0020] Specific examples of crystalline solids that have a solubility of 0.5% or more in water at 25°C and have anti-inflammatory effects include allantoin (solubility 0.5%), dipotassium glycyrrhizinate (solubility 1%), tranexamic acid (solubility 16%), and niacinamide (solubility 100%).

[0021] Component (B) may be used singly or in combination of two or more types, preferably in combination of two or more types, and when two or more types are used in combination, it is preferable to use one selected from allantoin and dipotassium glycyrrhizinate in combination with one selected from tranexamic acid and niacinamide.

[0022] The content of component (B) is 0.001 to 10% by mass, preferably 0.005 to 8% by mass, more preferably 0.01 to 7% by mass, and particularly preferably 0.05 to 6% by mass, relative to the total amount of the skin cosmetic. When allantoin or dipotassium glycyrrhizinate is contained as component (B), the content of allantoin or dipotassium glycyrrhizinate is preferably 0.005 to 0.5% by mass, more preferably 0.01 to 0.4% by mass, and particularly preferably 0.05 to 0.3% by mass, relative to the total amount of the skin cosmetic, from the viewpoint of stability at low and high temperatures.

[0023] If the content of component (B) is less than 0.001% by mass, the smooth feel upon application may be insufficient, and if the content of component (B) is more than 10% by mass, the stability at low and high temperatures may decrease.

[0024] <Component (C): Dihydric alcohol having 3 to 6 carbon atoms> Component (C) used in the present invention is a dihydric alcohol having 3 to 6 carbon atoms. Examples of dihydric alcohols having 3 to 6 carbon atoms include 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,2-pentanediol, 1,2-hexanediol, and dipropylene glycol. Among these, 1,3-propanediol, 1,3-butanediol, and 1,2-pentanediol are preferred, and 1,3-propanediol and 1,3-butanediol are more preferred.

[0025] The component (C) may be used alone or in combination of two or more. The content of component (C) is 1 to 25% by mass, preferably 2 to 20% by mass, and more preferably 3 to 15% by mass, based on the total amount of the skin cosmetic. If the content of component (C) is less than 1% by mass, the stability at low and high temperatures may decrease, the smooth feel upon application may be insufficient, and the difference in feel upon application may be significant when multiple applications are performed. If the content of component (C) exceeds 25% by mass, the smooth feel upon application may be insufficient, and the difference in feel upon application may be significant when multiple applications are performed.

[0026] <Component (D): Acidic mucopolysaccharides> Component (D) used in the present invention is an acidic mucopolysaccharide, such as hyaluronic acid, chondroitin-4-sulfate, chondroitin-6-sulfate, dermatan sulfate, keratan sulfate, heparin, etc., as well as their salts and acetylated derivatives. Preferred are hyaluronic acid, chondroitin-4-sulfate, chondroitin-6-sulfate, and their salts and acetylated derivatives, particularly preferred are hyaluronic acid, its salts and acetylated derivatives, and most preferred are hyaluronic acid salts.

[0027] Examples of salts of acidic mucopolysaccharides include inorganic salts and organic salts, and examples of inorganic salts include alkali metal salts such as sodium salts and potassium salts, and examples of organic salts include quaternary ammonium salts, etc. Preferred salts of acidic mucopolysaccharides are sodium salts and potassium salts.

[0028] As acidic mucopolysaccharide, commercially available products can be used.As commercially available products, for example, as sodium hyaluronate products, "Hyaluronic Acid Solution HA-LQH1P" manufactured by Kewpie Corporation, "Hyaluronic Acid FCH-200" manufactured by Kikkoman Biochemifa Corporation, "Extra-original Hyaluronic Acid Na "Maruha"" manufactured by Maruha Nichiro Foods Co., Ltd., and as low molecular weight hyaluronic acid, "Hyalooligo" manufactured by Kewpie Corporation can be mentioned.

[0029] The component (D) may be used alone or in combination of two or more types. The content of component (D) is 0.00001 to 0.05% by mass, preferably 0.0001 to 0.04% by mass, and more preferably 0.0005 to 0.03% by mass, based on the total amount of the skin cosmetic. If it is less than 0.00001% by mass, stability at low and high temperatures may decrease, and the smooth feel upon application may be insufficient. If it exceeds 0.05% by mass, the difference in feel upon application may be significant when multiple applications are performed.

[0030] <Component (E): Alkylene oxide derivative> The component (E) used in the present invention is an alkylene oxide derivative represented by the following formula (1).

[0031] [ka]

[0032] In formula (1), Z is a residue obtained by removing all hydroxyl groups from a compound having 1 to 7 carbon atoms and 1 to 4 hydroxyl groups.

[0033] x represents an integer of 1 to 4. EO is an oxyethylene group. PO is an oxypropylene group. BO is an oxybutylene group.

[0034] a is the average number of moles of the oxyethylene groups added and is 0≦a≦100, b is the average number of moles of the oxypropylene groups added and is 0≦b≦60, and c is the average number of moles of the oxybutylene groups added and is 0≦c≦5. However, a, b, and c are not all 0 at the same time. When neither a nor b is 0, (a / b) is 1 / 5 to 7 / 1. EO, PO, and BO may be added randomly or in blocks, or may have a mixture of random and block moieties.

[0035] The alkylene oxide derivative represented by formula (1) can be produced by a known method. x ) and then subject ethylene oxide, propylene oxide, and butylene oxide to addition polymerization. The order of addition of each monomer during addition polymerization The order can be determined depending on the desired structure. Commercially available alkylene oxide derivatives can also be used.

[0036] The content of component (E) is preferably 0.01 to 10% by mass, more preferably 0.05 to 8% by mass, and even more preferably 0.1 to 5% by mass, based on the total amount of the skin cosmetic. When the content of component (E) is within this range, stability at low and high temperatures is improved, and the difference in feel when multiple applications is minimized.

[0037] From the viewpoint of improving the smooth feel upon application, the ratio (A) / (C) of the contents of component (A) and component (C) is preferably 4 to 25, more preferably 5 to 20, and particularly preferably 6 to 15, by mass.

[0038] The skin cosmetic of the present invention may contain ordinary water in addition to component (A). Ordinary water is ion-exchanged water or distilled water used in ordinary skin cosmetic preparations, which contain substantially no minerals and have a hardness of 0 mg / L or less than 1 mg / L. Furthermore, when a commercially available product in the form of an aqueous solution or aqueous dispersion of an acidic mucopolysaccharide is used as component (D), the skin cosmetic of the present invention contains water derived from this product. The water contained in these products is ordinary water such as ion-exchanged water or distilled water, which contains substantially no minerals and has a hardness of 0 mg / L or less than 1 mg / L.

[0039] The normal water content in the skin cosmetic of the present invention is preferably 0 to 60% by mass, more preferably 0 to 40% by mass, and particularly preferably 0 to 20% by mass.

[0040] <Other added ingredients> In addition to the above components (A) to (E), the skin cosmetic of the present invention may further contain, as additive components, general components used in cosmetics.

[0041] Examples of other additive components include moisturizers, oils, surfactants, preservatives, thickeners, pH adjusters, antioxidants, sequestering agents, fragrances, colorants, pigments, amino acids, ceramides, 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. From the viewpoint of a smooth feel upon application, it is preferable to contain a plant extract having anti-inflammatory effects as another ingredient. Examples of plant extracts having anti-inflammatory effects include aloe vera leaf extract, purslane extract, witch hazel leaf extract, and eucalyptus leaf extract, with purslane extract and eucalyptus leaf extract being preferred, and a combination of purslane extract and eucalyptus leaf extract being particularly preferred. The content of the plant extract having anti-inflammatory effects is preferably 0.0001 to 0.1% by mass, more preferably 0.0005 to 0.05% by mass, and even more preferably 0.001 to 0.01% by mass, based on the total amount of the skin cosmetic.

[0042] The skin cosmetic of the present invention can be produced by a known method, for example, by mixing component (A) natural water having a hardness of 10 to 200 mg / L, component (B) a crystalline solid having a solubility in water at 25°C of 0.5% or more and having an anti-inflammatory effect, component (C) a dihydric alcohol having 3 to 6 carbon atoms, component (D) an acidic mucopolysaccharide, and component (E) an alkylene oxide derivative, and adjusting the pH appropriately to the optimum level.

[0043] 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]

[0044] The present invention will be described in more detail below with reference to examples and comparative examples. <Examples 1 to 23 and Comparative Examples 1 to 4> The skin cosmetics shown in Table 1, Table 2 (Examples 1 to 23) and Table 3 (Comparative Examples 1 to 4) were prepared by known methods and evaluated by the following methods. In Tables 1 to 3, the numerical value of each component indicates the content (% by mass) of each component relative to the total amount of the skin cosmetic, and (A) / (C) indicates the mass ratio of the content of component (A) to component (C).

[0045] Supplementary explanations for the symbols in Table 1 are as follows: *1 "Natural Water 1" Hardness: 150mg / L *2 “Natural Water 2” Hardness: 50mg / L *3 "Natural Water 3" Hardness: 25mg / L *4 "Hyaluronic Acid Solution HA-LQH1P," manufactured by Kewpie Corporation; an aqueous solution containing 1% by weight of sodium hyaluronate and 0.8% by weight of phenoxyethanol The contents in the table are the content of sodium hyaluronate per entire lotion. *5 "Hyalo Oligo," manufactured by Kewpie Corporation; hydrolyzed hyaluronic acid *6 "Macbiobride MG-20P," manufactured by NOF Corporation; Polyoxypropylene (20 moles) methyl glucoside *7 "Wilbride S-753" manufactured by NOF Corporation; Polyoxybutylene (3 mol), Polyoxyethylene (8 mol), Polyoxypropylene (5 mol) Glyceryl Ether *8 "Wilbride BS-03", manufactured by NOF Corporation; Polyoxyethylene (10 mol) Polyoxypropylene (7 mol) Butyl Ether

[0046] <Evaluation method> (1) Evaluation of stability at low and high temperatures The condition after storage at 0°C and 40°C for one month was checked, and the stability was evaluated as follows. ◎: No change in appearance was observed at either 0°C or 40°C, and no separation or precipitation was observed when returned to room temperature. ○: At either 0°C or 40°C, a change in appearance such as turbidity was observed in one or both of the samples, but no separation or precipitate was observed when the samples were returned to room temperature. ×: After storage at 0°C and 40°C, separation or precipitation was observed in either one or both of the samples when returned to room temperature.

[0047] (2) Evaluation of smooth feeling upon application Twenty women aged between 25 and 55 served as panelists. 1 g of the skin cosmetic was placed in the palm of their hand, and when applied to the face, the smoothness was evaluated according to the following criteria. 2 points: If it feels very smooth. 1 point: If it feels smooth. 0 points: If it feels not smooth.

[0048] (3) Evaluation of the feel when applied multiple times Twenty women aged between 25 and 55 served as panelists, and immediately after applying 1g of the skin cosmetic to their face, they took 1g of the skin cosmetic in their palm and applied it again to their face. The difference in sensation between the first and second applications was evaluated according to the following criteria. 2 points: If you feel there is almost no difference in the smooth feel or lack of stickiness. 1 point: If you feel there is not much difference in the smooth feel or lack of stickiness. 0 points: If you feel there is a difference in the smoothness and non-stickiness.

[0049] The total scores of each panelist in the evaluations (2) to (3) above were judged according to the following criteria and shown in Table 1. The results are shown in Table 3. "◎" and "○" were judged as passing. ◎: Total score is 35 points or more ○: Total score is 30 points or more and 34 points or less △: Total score is 20 or more and 29 or less ×: Total score is 19 points or less

[0050] [Table 1]

[0051] [Table 2]

[0052] [Table 3]

[0053] The skin cosmetics of Examples 1 to 23 all had excellent storage stability and a smooth feel upon application, and there was little difference in the feel upon application when multiple applications were made. In contrast, in Comparative Examples 1 to 4, sufficient performance was not obtained. Comparative Example 1 did not contain component (A), and therefore the smooth feel upon application was insufficient, and there was a considerable difference in the feel upon application when reapplied. Comparative Example 2 did not contain component (B), and therefore the smooth feel upon application was insufficient. Comparative Example 3 did not contain component (C), and therefore had poor stability at low and high temperatures, did not provide an adequate smooth feel when applied, and there was a significant difference in feel when applied multiple times. Comparative Example 4 did not contain component (D), and therefore had poor stability at low and high temperatures, and the smooth feel upon application was insufficient. 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 excellent storage stability and a smooth feel upon application, and there was little difference in the feel when multiple applications were made.

[0054] [Formulation Example 1] Gel-type skin cosmetic (mass%) Ingredients (A) Natural water 3:60 Ingredient (B) Dipotassium glycyrrhizinate: 0.1 Ingredient (B) Niacinamide: 5 Component (C) 1,2-pentanediol: 2 Component (C) 1,3-butanediol: 8 Ingredient (D) Sodium hyaluronate: 0.01 Component (E) Polyoxypropylene (20 mol) methyl glucoside: 0.1 Component (E) Polyoxyethylene (10 mol) polyoxypropylene (7 mol) butyl ether: 1 Glycerin: 5 Diglycerin: 1 Carboxyvinyl polymer: 0.2 Alkyl-modified carboxyvinyl polymer: 0.2 Arginine: 0.2 Polysorbate 80:0.2 PEG-60 hydrogenated castor oil: 0.2 Ethylhexylglycerin: 0.2 Portulaca oleracea extract: 0.005 Ceramide 3: 0.0001 Glutamic acid: 0.001 Serine: 0.001 Proline: 0.001 Alanine: 0.001 Fragrance: Appropriate amount Water: remaining amount

[0055] [Formulation Example 2] Emulsion-type skin cosmetic (mass%) Ingredients (A) Natural water 3:50 Ingredient (B) Dipotassium glycyrrhizinate: 0.1 Component (C) 1,2-pentanediol: 2 Component (C) 1,3-propanediol: 6 Component (C) Dipropylene glycol: 3 Ingredient (D) Sodium hyaluronate: 0.02 Component (E) Polyoxybutylene (3 moles), Polyoxyethylene (8 moles), Polyoxypropylene (5 moles), Glyceryl Ether: 1 Component (E) Polyoxyethylene (10 mol) polyoxypropylene (7 mol) butyl ether: 1 Ascorbyl glucoside: 2 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 Ethylhexylglycerin: 0.2 Portulaca oleracea extract: 0.005 Eucalyptus leaf extract: 0.005 Ceramide 3: 0.0001 Glutamic acid: 0.001 Serine: 0.001 Proline: 0.001 Alanine: 0.001 Fragrance: Appropriate amount Water: remaining amount [Industrial Applicability]

[0056] The present invention can provide a skin cosmetic that contains natural water and an anti-inflammatory component, has excellent storage stability, and provides a smooth feel when applied, and can also provide an excellent feel when applied multiple times.

Claims

[Claim 1] A skin cosmetic composition containing the following components (A), (B), (C), (D), and (E): (A) 10 to 98 mass% natural water with a hardness of 10 to 100 mg / L, excluding seawater and treated seawater (B) 0.001 to 10% by mass of a crystalline solid having a solubility in water of 0.5% or more at 25°C and having one or more anti-inflammatory effects selected from the group consisting of allantoin, dipotassium glycyrrhizinate, tranexamic acid, and niacinamide. (C) 1 to 25% by mass of a dihydric alcohol having 3 to 6 carbon atoms (D) 0.00001 to 0.05% by mass of acidic mucopolysaccharides (E) 0.01 to 10 mass % of an alkylene oxide derivative represented by the following formula (1): 【Chemical 1】 In formula (1), Z is a residue obtained by removing all hydroxyl groups from a compound having 1 to 7 carbon atoms and 1 to 4 hydroxyl groups, x represents an integer of 1 to 4. EO is an oxyethylene group. PO is an oxypropylene group. BO is an oxybutylene group. a is the average number of moles of the oxyethylene groups added and 0≦a≦100, b is the average number of moles of the oxypropylene groups added and 0≦b≦60, and c is the average number of moles of the oxybutylene groups added and 0≦c≦5, provided that a, b, and c are not simultaneously 0, and when neither a nor b is 0, (a / b) is 1 / 5 to 7 / 1, and EO, PO, and BO may be added randomly or in a block form, or may contain a mixture of random and block portions.

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