Liquid cosmetics

Abstract

By combining specific ingredients, we provide a low-viscosity liquid cosmetic with minimal skin irritation, in which ceramides are stably solubilized. [Solution] A liquid cosmetic composition comprising the following components (A) to (E) and having a viscosity of less than 400 mPa·s. (A) Ceramides 0.00001~0.1% by mass (B) One or more selected from 0.002 to 2.0% by mass of phospholipids and / or 0.0002 to 0.2% by mass of dilauroyl glutamate lysine salt. (C) Polyglycerol fatty acid ester in which all hydroxyl groups are esterified with fatty acids 0.004-4.0% by mass (D) One or two selected from glycerin and 1,3-butylene glycol (E)Water

Description

Technical Field

[0001] The present invention relates to a low-viscosity liquid cosmetic that stably solubilizes ceramides by containing a combination of specific components.

Background Art

[0002] Ceramides are abundant in the intercellular lipids that form the stratum corneum of the epidermis, and play an important role in maintaining skin moisture by constructing a lipid barrier necessary for moisture retention. Therefore, attempts have been made to prepare cosmetics containing ceramides intended to retain skin moisture by applying them to the skin. However, ceramides are highly crystalline substances with low solubility, and it has been difficult to ensure stability over time in liquid cosmetics due to reasons such as crystal precipitation at low temperatures. In particular, in low-viscosity liquid cosmetic formulations that contain almost no oily components serving as solvents and are difficult to stably hold solubilized particles, it has been very difficult to obtain a formulation in which ceramides are stably solubilized.

[0003] In addition, there are many types of liquid cosmetics applied to the skin, such as lotions and emulsions. Being highly fluid and low-viscosity is important in product selectivity, and a low-viscosity product with good stability that solubilizes ceramides has been desired. However, due to the low solubility of ceramides, a low-viscosity composition stably dissolved only in water cannot be achieved, and it is necessary to blend some solubilizing agent such as a surfactant. In conventional techniques, in order to obtain a formulation in which ceramides are solubilized, it is necessary to increase the blending amount of the solubilizing agent, which may impair safety and usability. On the other hand, when the blending amount of the surfactant is reduced, precipitation and sedimentation are observed, and there is a problem that ceramides cannot be completely solubilized and sufficient stability over time cannot be ensured.

[0004] Furthermore, the cosmetics industry widely uses surfactants to which ethylene oxide, which has excellent solubilizing properties, is added. These are mainly used for solubilization purposes in lotion formulations. However, these surfactants have safety issues, such as skin irritation, and alternatives are needed. Conventional solubilization methods are insufficient for solubilizing ceramides. Simply substituting them with other surfactants such as polyglycerol fatty acid esters or sucrose fatty acid esters does not provide sufficient solubilization performance and is not a adequate replacement.

[0005] Several improvement methods have been proposed to address the problem of difficulty in solubilizing ceramides: a method of combining a nonionic surfactant with an HLB of 9-20 and a liquid polyhydric alcohol (Patent Document 1); a topical skin preparation containing specific fatty acids or specific surfactants (Patent Document 2); a topical skin composition that stably incorporates ceramides by forming a bicell structure (Patent Document 3); and a method of solubilizing ceramides and obtaining a clear lotion by reducing the content of nonionic surfactants through combination with specific diols (Patent Document 4). However, these methods also have their challenges. Surfactants to which ethylene oxide has been added should be avoided from the standpoint of skin irritation and usability. On the other hand, limiting the types of surfactants used makes it difficult to obtain a low-viscosity composition in which ceramides are stably solubilized. These challenges are not adequately addressed in the above-mentioned patent documents.

[0006] In addition, while a translucent cosmetic composition containing oils such as sterols and nonionic surfactants to stably incorporate ceramides has been disclosed (Patent Document 5), no water-based, low-viscosity liquid cosmetic composition has been disclosed. Furthermore, while an emulsified cosmetic composition containing 1,2-pentanediol to stably incorporate ceramides over time has been disclosed (Patent Document 6), no water-based composition has been disclosed, and the formulations described in these documents differ from those of the present invention. Moreover, a cosmetic composition that achieves a low viscosity and a refreshing feel has been disclosed (Patent Document 7), but the inclusion of ceramides is not intended. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2002-338459 [Patent Document 2] Japanese Patent Publication No. 2001-316217 [Patent Document 3] Japanese Patent Publication No. 2023-102713 [Patent Document 4] Japanese Patent Publication No. 2014-148473 [Patent Document 5] International Publication No. 2004 / 045566 [Patent Document 6] Japanese Patent Publication No. 2003-176210 [Patent Document 7] International Publication No. 2009 / 020067 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] In the above circumstances, there was a need for a low-viscosity liquid cosmetic that did not cause skin irritation or other problems, had a superior feel, and in which ceramides were stably solubilized. In particular, there was a need for a liquid cosmetic that did not use surfactants to which ethylene oxide was added as a surfactant for solubilization. [Means for solving the problem]

[0009] As a result of diligent research to solve the above problems, the inventors of this invention have discovered that by combining specific components, a low-viscosity liquid cosmetic composition with low skin irritation can be obtained in which ceramides are stably solubilized.

[0010] In other words, the present invention provides the following ceramide-containing liquid cosmetic composition. (1) A liquid cosmetic containing the following ingredients (A) to (E) and having a viscosity of less than 400 mPa·s (A) Ceramides 0.00001~0.1% by mass (B) One or more selected from phospholipids (0.002-2.0% by mass) and / or dilauroyl glutamate lysine salts (0.0002-0.2% by mass). (C) Polyglycerol fatty acid ester in which all hydroxyl groups are esterified with fatty acids 0.004~4.0% by mass (D) One or two selected from glycerin and 1,3-butylene glycol (E)Water (2) The liquid cosmetic composition according to claim 1, wherein the surfactant to which ethylene oxide is added is 0.1% by mass or less relative to the mass of the liquid cosmetic composition. (3) The liquid cosmetic composition according to (2) above, wherein component (C) is polyglyceryl-6 octacaprylate. (4) The liquid cosmetic composition according to (3) above, wherein the ratio of component (A) to component (B) is 1:1 to 1:200. (5) The liquid cosmetic composition according to (4) above, wherein the ratio of component (A) to component (C) is 1:2 to 1:400. (6) A liquid cosmetic composition according to any of (1) to (5) above, wherein the ceramide is one or more selected from the group consisting of ceramide AG, ceramide AP, ceramide AS, ceramide EOP, ceramide EOS, ceramide NG, ceramide NP, ceramide NS, ceramide ADS, and ceramide NDS. [Effects of the Invention]

[0011] The present invention provides a low-viscosity liquid cosmetic that can solubilize ceramides, is stable over time, does not precipitate or oily, has reduced skin irritation from surfactants and other ingredients, and offers a superior feel. [Modes for carrying out the invention]

[0012] The present invention will be described in detail below. The cosmetic according to the present invention contains 0.00001 to 0.1% by mass of component (A) ceramides, 0.002 to 2.0% by mass of component (B) phospholipids and / or 0.0002 to 0.2% by mass of lysine dilauroyl glutamate, 0.004 to 4.0% by mass of component (C) polyglyceryl fatty acid ester in which all hydroxyl groups are esterified with fatty acids, 1 or 2 or more polyhydric alcohols selected from component (D) glycerin and 1,3-butylene glycol, and component (E) water, and stably solubilizes ceramides without blending a surfactant to which ethylene oxide is added, and relates to a liquid cosmetic having a viscosity of less than 400 mPa·s and less irritation to the skin.

[0013] The liquid cosmetic in the present invention may be any of lotion, aqueous cosmetic composition, and aqueous-based cosmetic composition, and may also be of the lotion type in the dosage form classification of the manufacturing method in the approval application for quasi-drugs, and may be a cosmetic or a quasi-drug under the Pharmaceutical Affairs Law.

[0014] The viscosity referred to in the present invention means the value (mPa·s) measured with a B-type viscometer (Tokyo Keiki Co., Ltd., VISCOMETER TVB-10), rotor No. M1, and measurement time of 60 seconds (rotation speed adjusted as appropriate) after filling a 500 ml beaker made of transparent glass with 500 ml and holding the viscosity in an incubator at 25°C for 3 hours or more.

[0015] As the component (A) ceramides used in the present invention, natural ceramides or pseudo-ceramides can be used.

[0016] (Natural ceramides) The natural ceramides used in the present invention are classified into natural ceramides and natural-type ceramides, and either can be used.

[0017] Natural ceramides are ceramides extracted from naturally occurring animals or plants (in this invention, they may be referred to as animal-derived or plant-derived; the same applies hereinafter). Specifically, these include natural ceramides extracted from rice bran, rice, corn, konjac, maitake mushrooms, golden oyster mushrooms, soybeans, beets, wheat, horse spinal cord or brain, etc. Plant-derived ceramides are preferred, and rice bran-derived ceramides are more preferred.

[0018] Natural-type ceramides are those that have the same structure as naturally occurring ceramides but are obtained through synthesis. Among natural-type ceramides, those obtained through synthesis that have the same structure as ceramides found in the stratum corneum of human skin are called human-type ceramides. Specific examples of human-type ceramides include ceramide AG, ceramide AP, ceramide AS, ceramide EOP, ceramide EOS, ceramide NG, ceramide NP, ceramide NS, ceramide ADS, and ceramide NDS.

[0019] Various derivatives of natural ceramides can also be used. For example, sphingoglycolipids in which a sugar is bound to ceramide may be used. Sphingoglycolipids differ depending on the sugar bound to ceramide, and include cerebrosides with monosaccharides and gangliosides with oligosaccharides. Examples of cerebrosides include galactosylceramide, in which the monosaccharide is galactose, and glucoseglucosylceramide. Specifically, sphingoglycolipids derived from rice bran are preferably used, and glucosylceramide derived from rice bran is more preferably used.

[0020] (Pseudo-ceramides) The pseudo-ceramides used in this invention are synthetic compounds that differ in structure from natural ceramides in some respects but possess at least one of the functions of natural ceramides. They are also called ceramide analogs or synthetic pseudo-ceramides, and may be any of the various substances known as pseudo-ceramides or their analogs. Specifically, these include N-lauroyl-L-glutamic acid di(phytosteryl·2-octyldodecyl), (glyceryl methacrylate / stearyl methacrylate) copolymer, polyquaternium-51, N-(tetradecyloxyhydroxypropyl)-N-hydroxydecanamide, and preferably, N-lauroyl-L-glutamic acid di(phytosteryl·2-octyldodecyl) is preferred.

[0021] Component (A) ceramides can be used alone or in a mixture of two or more types.

[0022] The amount of component (A) ceramides is preferably 0.00001% by mass or more, more preferably 0.0001% by mass or more, to exert effects such as skin moisture retention, and preferably 1.0% by mass or less, more preferably 0.1% by mass or less, to solubilize in liquid cosmetics.

[0023] It is important that the ceramides (A) used in this invention can be stably solubilized. In this invention, solubilization differs from the state in which the ceramides to be solubilized are dispersed in a solution. It refers to a state that has stability over time and does not cause crystal precipitation, etc. Therefore, even if no precipitation or oil droplets are observed during preparation, if crystal precipitation, oil droplets, precipitates, etc. are observed over time, it is judged that the substance has not been solubilized. In this invention, a stably solubilized liquid cosmetic means that immediately after manufacturing, it is stable without crystal precipitation, oil droplets, or precipitates forming in the solution of the substance to be solubilized, and that this state is stable not only during preparation but also over time.

[0024] In this invention, time-dependent stability refers to a state in which no crystal precipitation, oil droplets, or precipitates occur even after one month at 0°C and one month at 40°C from the time of preparation. Therefore, solubilization in this invention can be determined by visual inspection immediately after preparation, after one month at 40°C, and after one month at 0°C, and if the criteria are met in all cases, it can be determined that solubilization has been achieved.

[0025] In the present invention, the pH of the liquid cosmetic composition is preferably 4.5 to 8.0 in terms of solubilizing component (A) ceramides.

[0026] In terms of solubilizing component (A) ceramides, the inclusion of surfactants to which ethylene oxide has been added is sometimes considered. However, while this has stronger solubilizing power than phospholipids or dilauroyl glutamate lysine salts, it raises concerns about skin irritation, making its inclusion in liquid cosmetics undesirable. Furthermore, in the liquid cosmetics of the present invention, surfactants to which ethylene oxide has been added tend to reduce emulsion stability through interaction with other components. While its content is acceptable to some extent as it is initially present in the raw materials, it is preferable that it be 0.1% by mass or less, and more preferably not present at all.

[0027] Furthermore, ethanol, which helps dissolve ceramides (A), is sometimes added to increase the amount of ceramides. However, liquid cosmetics such as lotions are often used first after washing the face, and are among the most frequently used cosmetics, so there is a particular concern that skin irritation may occur. For this reason, in the liquid cosmetic of the present invention, the ethanol content is preferably 10.0% by mass or less.

[0028] The (B) phospholipids used in the present invention include diacylglycerophospholipids having polar groups such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, and phosphatidic acid; natural lecithin obtained from plants such as soybeans, rapeseed, sunflower, safflower, peanuts, cottonseed, corn, rice, and barley, as well as egg yolks, and their hydrogenated derivatives. Furthermore, these may also be derivatives modified with polyoxyalkylene groups such as polyethylene glycol. These phospholipids may be used individually or in mixtures of two or more. Of these, natural lecithin and their hydrogenated derivatives are preferred from the viewpoint of availability and better demonstrating the effects of the present invention. As for natural lecithin, commercially available products have varying phosphatidylcholine (hereinafter referred to as PC) content depending on the degree of purification, but for the present invention, it is preferable to use one with a PC content of 30% by mass or more, more preferably 40% by mass or more, and most preferably 50% by mass or more.

[0029] The amount of (B) phospholipid used in this invention is preferably 0.002 to 2.0% by mass, and more preferably 0.01 to 1.0% by mass. Within this range, good storage stability is achieved.

[0030] The (B) dilauroyl glutamate lysine salt used in the present invention is a polychain, polyhydrophilic compound. The salt of dilauroyl glutamate lysine salt can be selected from sodium, potassium, triethanolamine, and ammonia, but among these, sodium is more preferred from the viewpoint of good usability and storage stability.

[0031] The amount of dilauroyl glutamate lysine salt in component (B) is preferably 0.0002 to 0.2% by mass, and more preferably 0.001 to 0.2% by mass. Within this range, storage stability is good.

[0032] The component (B) used in the present invention may consist of a phospholipid or a dilauroyl glutamate lysine salt alone, or a phospholipid and a dilauroyl glutamate lysine salt in combination.

[0033] Surfactants are sometimes sold diluted with water or other substances, but in this specification, (B) phospholipids and dilauroyl glutamate lysine salts are expressed as a mass percentage of the pure content relative to the total amount of the cosmetic unless otherwise specified.

[0034] Polyglycerol fatty acid esters are polyglycerol derivatives formed by the polymerization (condensation) of two or more glycerol molecules, in which one or more fatty acids are ester-bonded to the hydroxyl residues of the polymerized polyglycerol. Because polyglycerol fatty acid esters contain numerous oxygen atoms and fatty acids, they possess surfactant properties and are generally used as surfactants. However, the HLB (Hydrogen-Liquid Bloc), a measure of surfactant properties, varies widely depending on the degree of polymerization of glycerol, the degree of esterification (the proportion of hydroxyl residues in one polyglycerol molecule that are esterified), and the type of fatty acid used. The lower the degree of esterification and the shorter the chain length of the constituent fatty acids, and the higher the degree of glycerol polymerization, the higher the HLB and the more hydrophilic the substance. Conversely, the higher the degree of esterification and the longer the chain length of the constituent fatty acids, and the lower the degree of glycerol polymerization, the lower the HLB, the less surfactant properties it has, and the stronger its properties as an oily component.

[0035] The component (C) used in the present invention is a polyglycerol fatty acid ester in which the properties of the oily component have been strengthened, that is, a polyglycerol fatty acid ester in which all hydroxyl group residues of one polymerized polyglycerol molecule have been esterified, and the present invention uses the above component (C) polyglycerol fatty acid ester as an oily component that serves as a solvent for component (A) ceramides.

[0036] In this invention, the degree of polymerization of the polyglycerol fatty acid ester in which all hydroxyl residues are esterified, and the type of fatty acid used for esterification, are not particularly limited. The degree of polymerization of glycerol should be 2 or higher; for example, polyglycerol fatty acid esters with a degree of polymerization of 2 to 10 are preferably exemplified. Furthermore, fatty acids with 4 or more carbon atoms, more preferably 8 or more carbon atoms, can be used, regardless of whether they are linear or branched, saturated or unsaturated.

[0037] Specific examples of polyglycerin fatty acid esters of component (C) used in the present invention include diglycerin tetraisostearate, diglycerin tetraoleate, triglycerin pentalicinoleate, triglycerin pentaoleate, triglycerin pentaisostearate, and hexaglycerin octacaprylate. In practice, octacaprylate polyglycerin, in which eight caprylic acids are ester-bonded to polyglycerin with a degree of polymerization of 6, is used. Various commercially available products such as polyglyceryl-6, polyglyceryl-3 pentaricinoleate (where 5 ricinoleic acid molecules are ester-bonded to triglycerin with a degree of polymerization of 3), polyglyceryl-2 tetraisostearate (where 4 isostearic acid molecules are ester-bonded to diglycerin with a degree of polymerization of 2), and polyglyceryl-2 tetraoleate (where 4 oleic acid molecules are ester-bonded to diglycerin with a degree of polymerization of 2) can be used as is, but polyglyceryl-6 octacaprylate is more preferred from the viewpoint of storage stability.

[0038] The amount of polyglycerol fatty acid ester, in which all hydroxyl groups of component (C) are esterified with fatty acids, is preferably 0.004 to 4.0% by mass, and more preferably 0.05 to 1.0% by mass. Within this range, storage stability is good.

[0039] In the liquid cosmetic composition of the present invention, a composition with excellent solubilization stability is obtained by combining (A) ceramides and (B) phospholipids and dilauroyl glutamate lysine salt. Furthermore, the mass ratio of these components is preferably 1:1 to 1:200, and more preferably 1:2 to 1:100. Within this range, good storage stability can be obtained.

[0040] In the liquid cosmetic composition of the present invention, a composition with excellent solubilization stability is obtained by combining (A) ceramides and (C) polyglycerin fatty acid esters in which all hydroxyl groups are esterified with fatty acids. Furthermore, the mass ratio of these compounds is preferably 1:2 to 1:400, and more preferably 1:4 to 1:200. Good storage stability can be obtained within this range.

[0041] In addition to the essential components mentioned above, the liquid cosmetic composition of the present invention may contain other components that can be incorporated into cosmetics, quasi-drugs, etc., as long as they do not impair the effects of the present invention. Specifically, it may contain hydrogenated oils derived from animal and vegetable oils, silicone-based oil phase components, fluorine-based oil phase components, glycerophospholipids such as lecithin and its derivatives, higher alcohols, higher fatty acids, thickeners, humectants, UV absorbers, powders, pigments, sugars, polymer compounds, anti-skin irritation components, physiologically active components, transdermal absorption enhancers, antioxidants, pH adjusters, chelating agents, fragrances, and the like.

[0042] The method for producing the liquid cosmetic composition of the present invention is not particularly limited and can be produced by known methods. Specifically, it can be produced by mixing the above essential components (A) to (E) and other optional components according to conventional methods. For mixing, for example, a homomixer or disperser mixer can be used, or a high-pressure emulsifier such as a high-pressure homogenizer or microfluidizer can be used. [Examples]

[0043] The present invention will be described below with reference to examples, but the present invention is not limited to these examples.

[0044] Each of the compositions shown in Tables 1 and 2, totaling 100% by mass, was prepared using the aforementioned manufacturing method, and its feel and stability were evaluated. The feel evaluation determined whether the product met the generally required feel for a low-viscosity lotion formulation aimed at by the present invention, with freshness being used as the indicator. Stability was evaluated to determine whether the product met market quality standards for a low-viscosity lotion formulation, with the appearance after exposure to high temperature (40°C for 1 month) and low temperature (0°C for 1 month) being used as the indicator.

[0045] (Evaluation items and evaluation methods) "Feel (moisture)" In the evaluation test for the refreshing feel, 20 expert evaluators assessed the sensation when 0.5g of the evaluation sample was applied to the face. ◎: More than 15 people responded that they felt it was fresh and juicy. ○: 8 to 14 people responded that they felt it was fresh and juicy. △: 4 to 7 people responded that they felt it was fresh and juicy. ×: Three or fewer people responded that they felt it was fresh and juicy. "Appearance and characteristics" The day after the sample was prepared, 70g was placed in an 80ml transparent polyethylene terephthalate bottle and checked for crystal precipitation, oil droplets, or other precipitates. ○: No changes were observed, such as crystal precipitation, oil droplet formation, or precipitate formation. ×: At least one of the following was observed: crystal precipitation, oil droplet formation, or precipitate formation. "Low-temperature stability (0°C x 1 month)" 70g of the sample was placed in an 80ml transparent polyethylene terephthalate bottle and left to stand in a 0°C incubator for one month, observing for any occurrence of precipitation or sedimentation. ○: No changes were observed, such as crystal precipitation, oil droplet formation, or precipitate formation. ×: At least one of the following was observed: crystal precipitation, oil droplet formation, or precipitate formation. "High temperature stability (40°C x 1 month)" 70g of the sample was placed in an 80ml transparent polyethylene terephthalate bottle and left to stand in a 40°C incubator for one month, observing for any occurrence of precipitation or sedimentation. ○: No changes were observed, such as crystal precipitation, oil droplet formation, or precipitate formation. ×: At least one of the following was observed: crystal precipitation, oil droplet formation, or precipitate formation.

[0046] [Table 1]

[0047] [Table 2]

[0048] We evaluated each item. The results are shown in Tables 1 and 2 (Examples 1-18, Comparative Examples 1-15). Examples 1 to 17 produced compositions that had excellent moisturizing properties as a lotion, a pleasant feel, and moderate viscosity. Furthermore, even after standing at 0°C and 40°C for one month, no changes such as crystal precipitation, oil droplet formation, or precipitate formation occurred. Example 18 is a composition that, in addition to component (B) dilauroyl glutamate lysine sodium, contains 0.1% polysorbate 20, a surfactant to which ethylene oxide has been added. Although the product quality was within acceptable limits, the high-temperature stability was slightly inferior compared to the other examples. Comparative Example 1 is a composition that does not contain component (B) as a surfactant, but instead contains polysorbate 20, a surfactant to which ethylene oxide has been added. It was in good condition immediately after manufacturing, but its low-temperature stability was poor, and crystal precipitation was observed, resulting in a non-uniform state. Comparative Example 2 is a composition that does not contain component (B) as a surfactant, but instead contains PEG-50 hydrogenated castor oil, which is a surfactant to which ethylene oxide has been added. It was in good condition immediately after manufacturing, but its high-temperature stability was poor, and precipitates were observed, resulting in an uneven state. Comparative Examples 3 and 4 are compositions that do not contain component (B) as a surfactant, but instead contain a polyglycerol fatty acid ester in which only a portion of the hydroxyl group residues are esterified with fatty acids. Precipitation was observed immediately after manufacturing, resulting in a non-uniform state. Comparative Examples 5 to 11 are compositions that do not contain component (C) as an oily solvent, but instead contain various other oily solvents. Deterioration of the condition was observed either immediately after manufacturing or over time, and none of the compositions maintained a good condition. Comparative Example 12 is a composition that does not contain component (D). A precipitate was observed immediately after manufacturing, resulting in an uneven state. Comparative Example 13 was a composition that contained tri(caprylic / capric acid) glyceryl as an oily solvent instead of component (C). However, due to its high viscosity, unlike Comparative Example 9, it exhibited good appearance immediately after manufacturing and good stability at high and low temperatures. On the other hand, only 4 out of 20 evaluators felt that it had a refreshing, lotion-like texture. Comparative Examples 14 and 15 were compositions containing 5.5% by mass of component (B). While the appearance immediately after manufacturing and the stability at high and low temperatures were good, only 5 out of 20 evaluators, and 6 out of 20, responded that they felt a refreshing, lotion-like quality.

[0049] Moisturizing lotion 1: Ceramide NG 0.006% by mass 2: Ceramide NP 0.004% by mass 3: Hydrogenated lecithin 0.18% by mass 4: Dilauroyl glutamate lysine sodium 0.0145% by mass 5: Polyglyceryl-6 Octacaprylate 0.38% by mass 6:1,3-Butylene glycol 10.0% by mass 7: Glycerin 10.0% by mass 8: Citric acid 0.01% by mass 9: Sodium citrate 0.02% by mass 10: Sodium hyaluronate 0.06% by mass 11: Phenoxyethanol 0.4% by mass 12: Soybean seed extract 0.004% by mass 13: Water level remaining Manufacturing method: Samples were prepared according to conventional methods. The composition had a refreshing feel upon application and maintained a high level of moisture after use. Furthermore, it exhibited excellent storage stability, showing no changes such as precipitation or sedimentation even after being left standing at 40°C and 0°C for one month.

[0050] Astringent lotion 1: Ceramide NG 0.006% by mass 2: Ceramide NP 0.004% by mass 3: Hydrogenated lecithin 0.18% by mass 4: Dilauroyl glutamate lysine sodium 0.0145% by mass 5: Polyglyceryl-6 Octacaprylate 0.38% by mass 6:1,3-Butylene glycol 6.0% by mass 7: Glycerin 3.0% by mass 8: Citric acid 0.01% by mass 9: Sodium citrate 0.02% by mass 10: Sodium Hyaluronate 0.01% by mass 11: Phenoxyethanol 0.4% by mass 12: Ethanol 7.0% by mass 12: Job's Tears Seed Extract 0.004% by mass 13: Water level remaining Manufacturing method: Samples were prepared according to conventional methods. The composition had a refreshing feel upon application and left a pleasantly clean feeling after use. Furthermore, it exhibited excellent storage stability, showing no changes such as precipitation or sedimentation even after being left standing at 40°C and 0°C for one month.

[0051] Astringent lotion 1: Ceramide NG 0.00006% by mass 2: Ceramide NP 0.00004% by mass 3: Hydrogenated lecithin 0.18% by mass 4: Dilauroyl glutamate lysine sodium 0.0002% by mass 5: Polyglyceryl-6 Octacaprylate 0.004% by mass 6:1,3-Butylene glycol 6.0% by mass 7: Glycerin 3.0% by mass 8: Citric acid 0.01% by mass 9: Sodium citrate 0.02% by mass 10: Sodium Hyaluronate 0.01% by mass 11: Phenoxyethanol 0.4% by mass 12: Ethanol 7.0% by mass 12: White bean extract 0.002% by mass 13: Water level remaining Manufacturing method: Samples were prepared according to conventional methods. The composition had a refreshing feel upon application and left a pleasantly clean feeling after use. Furthermore, it exhibited excellent storage stability, showing no changes such as precipitation or sedimentation even after being left standing at 40°C and 0°C for one month.

Claims

1. A liquid cosmetic containing the following ingredients (A) to (E) and having a viscosity of less than 400 mPa·s. (A) Ceramides 0.00001 to 0.1% by mass (B) Phospholipids 0.002 to 2.0% by mass and / or dilauroyl glutamate lysine salt 0.0002 to 0.2% by mass (C) Polyglycerol fatty acid ester in which all hydroxyl groups are esterified with fatty acids: 0.004 to 4.0% by mass (D) One or two selected from glycerin and 1,3-butylene glycol (E) Water

2. The liquid cosmetic composition according to claim 1, wherein the surfactant to which ethylene oxide is added is 0.1% by mass or less relative to the mass of the liquid cosmetic composition.

3. The liquid cosmetic composition according to claim 2, wherein the aforementioned component (C) is polyglyceryl-6 octacaprylate.

4. The liquid cosmetic composition according to claim 3, wherein the ratio of component (A) to component (B) is 1:1 to 1:

200.

5. The liquid cosmetic composition according to claim 4, wherein the ratio of component (A) to component (C) is 1:2 to 1:

400.

6. The liquid cosmetic composition according to any one of claims 1 to 5, wherein the component (A) ceramides is one or more selected from the group consisting of ceramide AG, ceramide AP, ceramide AS, ceramide EOP, ceramide EOS, ceramide NG, ceramide NP, ceramide NS, ceramide ADS, and ceramide NDS.

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