Cosmetic

Abstract

The present invention provides a cosmetic that contains a component A that is an ester product of dipentaerythritol and one or more fatty acids selected from C6–22 straight-chain fatty acids, a component B that is an oil agent that is liquid at 20°C and has a molecular weight of no more than 1000 or an oil agent mixture that is liquid at 20°C and has an average molecular weight of no more than 1000, and a component C that is one or more oil agents that are semisolid at 20°C (excluding dimer dilinoleic acid esters and dipentaerythrityl hexa(hydroxystearate / stearate / rosinate)). Of the total of the oily components, the component A content is 24–68 mass%, the component B content is 24–68 mass%, and the component C content is 3–25 mass%.

Description

Cosmetics

[0001] The present invention relates to a cosmetic comprising an esterified product composed of a specific polyhydric alcohol and a fatty acid. The present application claims priority based on Japanese Patent Application No. 2025-053209 filed in Japan on March 27, 2025, and Japanese Patent Application No. 2025-120312 filed in Japan on July 17, 2025, the contents of which are incorporated herein by reference.

[0002] Among cosmetic raw materials, oily components are components that have the effect of suppressing moisture transpiration from the skin, retaining moisture, and softening the skin. For example, Patent Document 1 reports that an esterified product of dipentaerythritol, erythritol, or sorbitan and one or more fatty acids selected from linear saturated fatty acids having 6 to 10 carbon atoms is an oily moisturizer excellent in the moisturizing function of the skin when applied to the skin.

[0003] On the other hand, low-temperature stability is important in cosmetics containing an oily component. As a technique for improving low-temperature stability, Patent Document 2 discloses an oily composition excellent in low-temperature stability while being excellent in all of penetration feeling, film thickness feeling, and richness feeling by containing hexa(hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl in almond oil and / or macadamia nut oil. In addition, Patent Document 3 discloses an oily cosmetic that has good usage feel and good storage stability at low temperatures (24-hour cycle at -5°C to 5°C) by containing jojoba oil, a liquid oil with a specific viscosity, and a specific semi-solid oil agent.

[0004] International Publication No. 2020 / 116411, Japanese Unexamined Patent Application Publication No. 2018-100265, Japanese Unexamined Patent Application Publication No. 2020-7281

[0005] An esterified product of dipentaerythritol and one or more fatty acids selected from linear saturated fatty acids having 6 to 10 carbon atoms has a relatively high freezing point. For this reason, when the esterified product is highly blended into cosmetics, there has been a problem that it solidifies at low temperatures or its properties change.

[0006] The object of the present invention is to provide a cosmetic composition containing an esterified product of dipentaerythritol and one or more fatty acids selected from linear saturated fatty acids having 6 to 10 carbon atoms, which has high low-temperature stability and excellent film thickness, non-stickiness, richness, and moisturizing properties.

[0007] The present inventors conducted diligent studies to solve the aforementioned problems and, as a result, discovered that a cosmetic composition containing an esterified product of dipentaerythritol and one or more fatty acids selected from linear saturated fatty acids having 6 to 10 carbon atoms, an oil that is liquid at 20°C with a molecular weight of 1000 or less, and an oil that is semi-solid at 20°C exhibits high low-temperature stability and excellent film thickness, non-stickiness, richness, and moisturizing properties, thus completing the present invention. Specifically, the present invention provides the following embodiments.

[0008] [1] A cosmetic composition containing component A, component B, and component C, wherein the content of component A is 24 to 68% by mass, the content of component B is 24 to 68% by mass, and the content of component C is 3 to 25% by mass, relative to the total oily components of the cosmetic composition, and the mass ratio of component A to component B (component A:component B) is 30:70 to 70:30. Component A: An esterified product of dipentaerythritol and one or more fatty acids selected from straight-chain fatty acids having 6 to 22 carbon atoms. Component B: An oil that is liquid at 20°C and has a molecular weight of 1000 or less, or a mixture of two or more oils that are liquid at 20°C, wherein the average molecular weight of the mixture is 1000 or less. Component C: One or more oils that are semi-solid at 20°C (excluding dimer dilinoleate ester and hexa(hydroxystearic acid / stearic acid / rosinic acid)dipentaerythrityl). [2] The cosmetic composition according to [1], wherein Component A is an esterified product of dipentaerythritol and one or more fatty acids selected from straight-chain fatty acids having 6 to 10 carbon atoms. [3] The cosmetic composition according to [1] or [2], wherein the hydroxyl value of the esterified product of Component A is 1 mg KOH / g or less. [4] Any of the cosmetics described in [1] to [3] above, wherein component A is hexa(caprylic / capric acid)dipentaerythrityl or hexa(heptanoic acid / caprylic / capric acid)dipentaerythrityl.[5] The above component B is methylheptyl pelargonate, isononyl isononanoate, isotridecyl isononanoate, di(caprylic / capric acid)propanediol, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diisostearyl malate, castor oil, olive oil, avocado oil, palm oil, liquid paraffin, liquid branched paraffin, squalane, tri(caprylic / capric acid)glyceryl, triethylhexanoin, butyl stearate, ethylhexyl palmitate, (caprylic / A cosmetic composition according to any of [1] to [4] above, wherein component C is one or more oils selected from the group consisting of capric acid) coconut alkyl, caprylyl (caprylic / capric acid), octyldodecyl myristate, isopropyl myristate, isopropyl lanolinate, hexyl lanolinate, diisopropyl adipate, diisopropyl sebacate, 2-octyldodecanol, polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, and trimethylolpropane triisostearate. [6] A cosmetic composition according to any of [1] to [5] above, wherein component C is one or more oils selected from the group consisting of hydroxy fatty acids and / or C8-22 linear or branched higher fatty acids and dipentaerythritol, N-acyl glutamate esters, and petrolatum. [7] The cosmetic composition according to [6], wherein the ester of the hydroxy fatty acid and / or a linear or branched higher fatty acid of C8-22 with dipentaerythritol is one or two oils selected from the group consisting of tetra(hydroxystearic acid / isostearate)dipentaerythrityl and hexahydroxystearate dipentaerythrityl. [8] The cosmetic composition according to [6] or [7], wherein the N-acyl glutamate ester is one or more oils selected from the group consisting of lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl), lauroyl glutamate (phytosteryl / behenyl / octyldodecyl), and lauroyl glutamate di(cholesteryl / behenyl / octyldodecyl). [9] The cosmetic composition according to any of [1] to [8], wherein the cosmetic composition is an oily cosmetic composition.

[0009] According to the present invention, it is possible to provide a cosmetic composition that contains an esterified product of dipentaerythritol and a linear saturated fatty acid having 6 to 22 carbon atoms as an oily humectant, while exhibiting high low-temperature stability and excellent film thickness, non-stickiness, richness, and moisturizing properties.

[0010] This is a sample of photographs comparing the appearance of a sample stored at 5°C for one day and a sample stored at 25°C for one day, along with their evaluation results (ratings A, B, C).

[0011] The embodiments of the present invention will be described in detail below.

[0012] In the present invention and this specification, the hydroxyl value (mgKOH / g) of the esterified product can be measured by the hydroxyl value (pyridine-acetic anhydride method) described in section 2.3.6.2-1996 of the "Standard Test Methods for Analysis of Fats and Oils Established by the Japan Oil Chemists' Society, 2013 Edition," published by the Japan Oil Chemists' Society.

[0013] Specifically, it is the amount of potassium hydroxide in milligrams required to neutralize the acetic acid bonded to the hydroxyl group when 1 g of the sample is acetylated. The hydroxyl value of the esterified product is measured by neutralization titration. More specifically, the acetylation reagent is added to the sample and heated in a glycerin bath for 1 hour. Then, 1 mL of water is added to convert the unreacted acetic anhydride to acetic acid, and phenolphthalein solution is added as an indicator. The mixture is then titrated with potassium hydroxide ethanol solution. The hydroxyl value is calculated from the amount of potassium hydroxide ethanol solution required to confirm the color development of phenolphthalein. The acetylation reagent is a solution prepared by adding pyridine to 25 g of acetic anhydride to make a total volume of 100 mL.

[0014] In the present invention and this specification, "oil-based component" means a component that is insoluble in water at room temperature and atmospheric pressure (for example, 20°C, 101.3 kPa). Here, "soluble in water" means that when mixed with water, it becomes uniform without forming layers or becoming cloudy. The oil-based component may be liquid, semi-solid, or solid at 20°C. Furthermore, an "oil-based component (oil agent) that is liquid at 20°C" is sometimes called "liquid oil (liquid oil agent)," and an "oil-based component (oil agent) that is semi-solid at 20°C" is sometimes called "semi-solid oil (semi-solid oil agent)." "Semi-solid at 20°C" means a state intermediate between liquid and solid, where there is no fluidity at 20°C, but a small amount of force (10-100 g / cm²) is applied. ２ This refers to something that deforms when multiplied by a certain degree.

[0015] In the present invention and this specification, "oil-based humectant" means an oil-based humectant, that is, an agent that is insoluble in water at room temperature and atmospheric pressure (for example, 20°C, 101.3 kPa) and has a moisturizing effect. When an oil-based humectant is mixed with water, it separates from water molecules to form a layer or becomes cloudy due to emulsification.

[0016] In the present invention and this specification, "oil-based humectant" means an agent that is insoluble in water at room temperature and atmospheric pressure (e.g., 20°C, 101.3 kPa) and has a moisturizing effect. Here, "soluble in water" means that when mixed with water, it becomes uniform without forming layers or becoming cloudy. In other words, when an oil-based humectant is mixed with water, it separates from water molecules to form layers or becomes cloudy due to emulsification.

[0017] In the present invention and this specification, the term "moisturizing effect" means the effect of improving the moisturizing function of the skin, and more specifically, the effect of retaining or increasing the moisture content of the stratum corneum. The oily moisturizer according to the present invention is preferably one that maintains the effect of retaining or increasing the moisture content of the stratum corneum for a certain period of time, not only when applied to the skin, but also when a portion or most of the external skin composition has been removed from the skin surface after application.

[0018] The water content of the stratum corneum can be determined by its electrical conductivity (μS). The electrical conductivity (μS) of the stratum corneum depends on its water content; the higher the water content, the higher the electrical conductivity (μS). The electrical conductivity (μS) of the stratum corneum can be measured by a constant-pressure sensor probe contact high-frequency conductance exchange method. Specifically, the electrical conductivity (μS) of the stratum corneum can be measured using a stratum corneum water content measuring device based on this measurement method, for example, IBS's stratum corneum water content measuring device "SKICON-200".

[0019] <Cosmetics> The cosmetics of this embodiment contain the oily components A, B, and C described below, wherein the content of component A is 24 to 68% by mass, the content of component B is 24 to 68% by mass, and the content of component C is 3 to 25% by mass, relative to the total oily components of the cosmetics, and the mass ratio of component A to component B (component A:component B) is 30:70 to 70:30. Component A: An esterified compound of dipentaerythritol and one or more fatty acids selected from straight-chain fatty acids having 6 to 22 carbon atoms. Component B: An oily substance that is liquid at 20°C and has a molecular weight of 1000 or less, or a mixture of two or more oily substances that are liquid at 20°C, wherein the average molecular weight of the mixture is 1000 or less. Component C: One or more oily substances that are semi-solid at 20°C (excluding dimer dilinoleate ester and hexa(hydroxystearic acid / stearic acid / rosinic acid)dipentaerythrityl).

[0020] The esterified form of component A is liquid at 20°C, but has a relatively high freezing point. Therefore, cosmetics containing this esterified form are less stable and more prone to changes in physical properties when stored at low ambient temperatures during transport and storage compared to cosmetics containing only oily components with lower freezing points. For example, hexa(caprylic / capric acid)dipentaerythrityl, one of the esterified forms of component A, is liquid at 25°C, but has a freezing point of 19°C. Therefore, cosmetics containing hexa(caprylic / capric acid)dipentaerythrityl have the characteristic of changing in appearance (becoming cloudy) or solidifying in low-temperature environments. Cosmetics using only hexa(caprylic / capric acid)dipentaerythrityl as the oily component are liquid at 25°C, so they can be easily dispensed from cosmetic containers (bottles, pumps, tubes, jars, etc.). However, in cold seasons, for example, when stored in low-temperature environments, they solidify and become difficult to dispense from the container.

[0021] The cosmetic composition of this embodiment contains the esterified form of component A, as well as the oily components of components B and C in specific content ratios. Therefore, compared to cosmetic compositions that do not contain the oily components of components B and C, or cosmetic compositions whose content ratios are outside the aforementioned range, it has higher low-temperature stability and its appearance and physical properties are less likely to change even in low-temperature environments of 5 to 10°C.

[0022] <Component A> The esterified component A contained in the cosmetic composition of this embodiment is an esterified product of dipentaerythritol and one or more fatty acids selected from linear fatty acids having 6 to 22 carbon atoms. The esterified component A is a compound in which at least a portion of the hydroxyl groups in dipentaerythritol are replaced by fatty acid residues derived from linear fatty acids having 6 to 22 carbon atoms through an esterification reaction. All fatty acid residues in one molecule of the esterified product may be of the same type, or each molecule may contain two or more types of fatty acid residues.

[0023] Since the esterified form of component A is an oily humectant, the cosmetic composition of this embodiment containing component A exhibits a moisturizing effect (Patent Document 1). In other words, when applied to the skin, the cosmetic composition of this embodiment improves the skin's moisturizing function and has the effect of retaining or increasing the moisture content of the stratum corneum. For this reason, the cosmetic composition of this embodiment is suitable as a moisturizing cosmetic.

[0024] The esterified form of component A has a relatively high freezing point. Therefore, cosmetics containing a high concentration of the esterified form of component A may have problems with low-temperature stability. However, the cosmetic of this embodiment contains the esterified form of component A, as well as the oily components of components B and C in a specific composition, resulting in excellent stability, especially low-temperature stability, and superior functional properties after application.

[0025] The esterified product of component A is synthesized by esterifying dipentaerythritol with one or more straight-chain fatty acids having 6 to 22 carbon atoms. The dipentaerythritol and fatty acids used as raw materials for the esterified product of component A may be chemically synthesized products or extracted from natural products. For example, dipentaerythritol can be obtained from pentaerythritol as a raw material by a condensation reaction or the like. In addition, commercially available products of dipentaerythritol and fatty acids can also be used. Examples of commercially available dipentaerythritol include "Dipentaerythritol (90% GRADE)" sold by Lee Changrong Chemical Co., Ltd.

[0026] The fatty acids that serve as raw materials for the esterified product of component A are straight-chain fatty acids with 6 to 22 carbon atoms. Examples of straight-chain saturated fatty acids with 6 to 22 carbon atoms include caproic acid (n-hexanoic acid: 6 carbon atoms), n-heptanoic acid (7 carbon atoms), caprylic acid (n-octanoic acid: 8 carbon atoms), pelargonic acid (n-nonanoic acid: 9 carbon atoms), capric acid (n-decanoic acid: 10 carbon atoms), n-undecanoic acid (11 carbon atoms), lauric acid (n-dodecanoic acid: 12 carbon atoms), myristic acid (n-tetradecanoic acid: 14 carbon atoms), n-pentadecanoic acid (15 carbon atoms), palmitic acid (n-hexadecanoic acid: 16 carbon atoms), n-heptadecanoic acid (17 carbon atoms), stearic acid (18 carbon atoms), arachidic acid (n-eicosanoic acid: 20 carbon atoms), and behenic acid (n-docosanoic acid: 22 carbon atoms). As the fatty acid used as the raw material for the esterified product of component A, a straight-chain fatty acid having 6 to 10 carbon atoms is preferred, one or two selected from caprylic acid and capric acid are more preferred, and caprylic acid is even more preferred.

[0027] The mass ratio of each constituent fatty acid residue in the esterified product of component A can be determined by first preparing a derivative by methyl esterifying the fatty acid residues in the esterified product using a method corresponding to 2.4.1.1-2013 Methyl esterification method (sulfuric acid-methanol method) (published by the Japan Oil Chemists' Society, "Standard Test Methods for Analysis of Fats and Oils, 2013 Edition"), and then measuring the obtained derivative using a method corresponding to 2.4.2.3-2013 Fatty acid composition (capillary gas chromatography method) (published by the Japan Oil Chemists' Society, "Standard Test Methods for Analysis of Fats and Oils, 2013 Edition").

[0028] The hydroxyl value of the esterified product of component A is not particularly limited, but is preferably 0 to 160 mg KOH / g. When the hydroxyl value of the esterified product of component A is within the above range, the esterified product can provide sufficient moisturizing effect. As for the hydroxyl value of the esterified product of component A, 0 to 110 mg KOH / g is more preferred, 0 to 90 mg KOH / g is even more preferred, and 0 to 10 mg KOH / g is even more preferred, in order to obtain a cosmetic product that is not sticky and blends well with the skin. In particular, a lower hydroxyl value of the esterified product of component A is preferred, 0 to 10 mg KOH / g is more preferred, 0 to 3 mg KOH / g is even more preferred, and 0 to 1 mg KOH / g is even more preferred, in order to obtain a cosmetic product that is not sticky and blends well with the skin. The hydroxyl value of the esterified product of component A is also preferably 0 mg KOH / g (a full ester in which all hydroxyl groups of dipentaerythritol are esterified).

[0029] By changing the hydroxyl value of the esterified product of component A, the viscosity and texture of the esterified product can be adjusted to a desired state. Therefore, component A can be appropriately selected from esterified products with different hydroxyl values ​​depending on the application and formulation requirements.

[0030] The esterification reaction between dipentaerythritol and a fatty acid to synthesize the esterified product of component A can be carried out, for example, as follows: Dipentaerythritol and a fatty acid are placed in a reaction vessel, and the esterification reaction is carried out for 1 to 20 hours in an inert organic solvent and / or gas at a temperature preferably 100°C to 250°C, more preferably 150°C to 250°C, even more preferably 160°C to 240°C, and even more preferably 190°C to 230°C, while removing the by-product water, to obtain the esterified product. The reaction time is affected by the raw materials used (linear or branched), the presence or absence of a catalyst, the esterification temperature, or the excess amount of acid. As the organic solvent, solvents known in the field of organic chemistry that are used in the esterification reaction of alcohols and fatty acids can be used.

[0031] A catalyst may be used in the esterification reaction as needed. Examples of catalysts include acid catalysts, alkali catalysts, and metal catalysts. Examples of acid catalysts include sulfuric acid, hydrochloric acid, and trifluoroacetic acid; examples of alkali catalysts include sodium hydroxide, potassium hydroxide, and triethylamine; and examples of metal catalysts include alkali metals, alkaline earth metals, transition metals in their elemental form, or alkoxides. When using an acid catalyst, alkali catalyst, or metal catalyst as a catalyst, the amount used is preferably about 0.001 to 1.0% by mass relative to the total mass of the reaction raw materials.

[0032] After the reaction, the catalyst and unreacted raw materials can be removed by known purification treatments such as washing with water, alkaline deoxidation, adsorption treatment, and distillation. Furthermore, the resulting reaction product can be further purified by decolorization and deodorization treatments. If a catalyst was used, it may be removed after the reaction is complete by filtration treatment or adsorption treatment.

[0033] A commercially available product may be used as the esterified product of component A. Examples of commercially available esterified products of dipentaerythritol and one or more straight-chain fatty acids having 6 to 22 carbon atoms include "Sarakos DP810" (manufactured by Nisshin Oillio Group Co., Ltd.).

[0034] Since the esterified product of component A is an esterified product of dipentaerythritol, it may contain fatty acid esters with a degree of esterification of 1 to 6. The composition ratio of dipentaerythritol fatty acid esters with a degree of esterification of 1 to 6 is not particularly limited, but is preferably a composition ratio such that the hydroxyl value of the obtained esterified product is 0 to 160 mg KOH / g, more preferably 0 to 110 mg KOH / g or 0 to 90 mg KOH / g, even more preferably 0 to 10 mg KOH / g, even more preferably 0 to 3 mg KOH / g, and particularly preferably 0 to 1 mg KOH / g.

[0035] The composition ratio of fatty acid esters in the esterified product obtained by the esterification reaction of dipentaerythritol and fatty acids can be adjusted by appropriately adjusting the ratio of raw materials and the reaction conditions of the esterification reaction.

[0036] Furthermore, by adjusting the amounts of dipentaerythritol and fatty acids used and calculating to achieve the desired hydroxyl value, an esterified product with a hydroxyl value close to the desired value can be obtained. For example, in the esterification reaction to obtain the esterified product of component A, the number of moles of fatty acid necessary to achieve the desired hydroxyl value, or a larger number of moles, can be charged to 1 mole of dipentaerythritol.

[0037] For example, when producing an esterified product of component A with a hydroxyl value of 0 mgKOH / g, that is, when producing a full fatty acid ester of dipentaerythritol (where all hydroxyl groups of dipentaerythritol are esterified with fatty acids), it can be produced by charging more than 6 moles of fatty acid to 1 mole of dipentaerythritol.

[0038] If the hydroxyl value of the resulting esterified product deviates from the desired hydroxyl value, the final esterified product with the desired hydroxyl value can be obtained by adjusting the charging ratio to account for the degree of deviation. Furthermore, in the production of a partial ester with the desired hydroxyl value, an esterified product with a hydroxyl value close to the desired value can be obtained by charging a larger amount of fatty acid than required and stopping the reaction midway while monitoring the change in acid value during the reaction.

[0039] One embodiment of the esterified product of component A contained in the cosmetic composition of this embodiment is an esterified product of dipentaerythritol and a linear saturated fatty acid, wherein the linear saturated fatty acid is one or more fatty acids selected from linear saturated fatty acids having 6 to 22 carbon atoms, and has a hydroxyl value of 0 to 160 mg KOH / g, preferably 0 to 110 mg KOH / g, 0 to 90 mg KOH / g, more preferably 0 to 10 mg KOH / g, even more preferably 0 to 3 mg KOH / g, and even more preferably 0 to 1 mg KOH / g. Preferably, it is an esterified product of dipentaerythritol and one or more fatty acids selected from linear saturated fatty acids having 6 to 10 carbon atoms, with a hydroxyl value of 0 to 10 mg KOH / g, and more preferably, it is an esterified product of dipentaerythritol and one or more fatty acids selected from caprylic acid and capric acid, with a hydroxyl value of 0 to 3 mg KOH / g.

[0040] As the esterified product of component A contained in the cosmetic composition of this embodiment, hexa(caprylic / capric acid)dipentaerythrityl or hexa(heptanoic acid / caprylic / capric acid)dipentaerythrityl is preferred due to its particularly high moisturizing effect, and both may be combined to form the esterified product of component A.

[0041] <Component B> Component B contained in the cosmetic composition of this embodiment is an oily component (liquid oil) that is liquid at 20°C, other than component A, among the oily components contained in the cosmetic composition of this embodiment. If component B consists of one type of oil, the molecular weight of that oil is 1000 or less. If component B consists of two or more types of oil, the average molecular weight of the mixture of these oils is 1000 or less. If component B consists of two or more types of oil, the average molecular weight of the mixture of all the oils in component B is a theoretical value (calculated average molecular weight) calculated from the molecular weight and composition ratio (mass ratio) of each oil.

[0042] When component B is two or more oil agents, all of the oil agents are oil agents with a molecular weight of 1000 or less, or at least one is an oil agent with a molecular weight of 1000 or less and at least one is an oil agent with a molecular weight exceeding 1000. As the oily component of component B contained in the cosmetic of the present embodiment, it is preferred that the oily component consists of only one type of liquid oil agent with a molecular weight of 1000 or less, or is a mixture of two or more types of liquid oil agents with a molecular weight of 1000 or less.

[0043] Examples of the liquid oil agent with a molecular weight of 1000 or less include methylheptyl pelargonate, isononyl isononanoate, isotridecyl isononanoate, propanediol di(caprylate / caprate), neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diisostearyl malate, castor oil, olive oil, avocado oil, palm oil, liquid paraffin, liquid branched paraffin, squalane, glyceryl tri(caprylate / caprate), triethylhexanoin, butyl stearate, ethylhexyl palmitate, coconut alkyl (caprylate / caprate), caprylyl (caprylate / caprate), octyldodecyl myristate, isopropyl myristate, isopropyl lanolate, hexyl lanolate, diisopropyl adipate, diisopropyl sebacate, 2-octyldodecanol, polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, and trimethylolpropane triisostearate. As component B contained in the cosmetic of the present embodiment, it is preferred to be one or two or more selected from these liquid oil agents.

[0044] <Component C> The oily component of component C contained in the cosmetic of the present embodiment is one or two or more oil agents that are semisolid at 20°C, that is, one or two or more semisolid oil agents. Provided that dimer dilinoleic acid ester and hexa(hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl are excluded from component C.

[0045] As semi-solid oils, esters of hydroxy fatty acids and / or C8-22 linear or branched higher fatty acids and dipentaerythrityl, such as tetra(hydroxystearic acid / isostearate) dipentaerythrityl and hexahydroxystearate dipentaerythrityl; di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, phytosteryl / behenyl / octyldodecyl / isostearyl lauroyl glutamate, di(cholesteryl) N-acyl glutamate esters such as (yl / behenyl / octyldodecyl); (isostearate / behenate) (glyceryl / polyglyceryl-6) esters, macadamia nut oil polyglyceryl-6 esters behenate, bis-diglyceryl polyacyladipate-2, and other polyglycerin esters; (ethylhexanoate / stearate / adipate) glyceryl, macadamia nut oil fatty acid phytosteryl, phytosteryl oleate, cholesteryl hydroxystearate, alkyl (C ２６－２８ Examples include dimethicone, shea butter, triglycerides such as caprylic / capric / myristic / stearic acid glyceryl; hydrogenated castor oil stearate; and petrolatum. The cosmetic composition of this embodiment preferably contains one or more of these semi-solid oils as component C. Among these, tetra(hydroxystearic acid / isostearate) dipentaerythrityl, hexahydroxystearate dipentaerythrityl, N-acyl glutamate ester, and lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl) are preferred, and tetra(hydroxystearic acid / isostearate) dipentaerythrityl, hexahydroxystearate dipentaerythrityl, and lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl) are particularly preferred.

[0046] In the cosmetic of the present embodiment, the mass ratio of the content of component A to component B is component A:component B = 30:70 to 70:30. When the content ratio of component A and component B falls within the above range, the content of component B relative to component A becomes sufficient. In addition to suppressing the precipitation of component A under low-temperature environments, oil floating caused by excess liquid oil is also suppressed, resulting in improved low-temperature stability. Furthermore, when the content ratio of component A and component B falls within the above range, the cosmetic exhibits favorable texture in use, such as film thickness feeling, non-stickiness after application, rich feeling and moisturizing feeling. As the mass ratio of the content of component A to component B (component A:component B), 35:65 to 65:35 is preferred, 40:60 to 60:40 is more preferred, 45:55 to 55:45 is even more preferred, and 50:50 is particularly preferred.

[0047] Regarding the content ratio of component A to component C relative to the total amount of oily components in the cosmetic of the present embodiment, the content of component A is 24 to 68% by mass, the content of component B is 24 to 68% by mass, and the content of component C is 3 to 25% by mass. Since the cosmetic of the present embodiment contains component A, component B, and component C within the above composition ratio range, the excellent low-temperature stability obtained when component A and component B are present at an appropriate content ratio is not impaired, and the texture in use such as film thickness feeling, non-stickiness after application, rich feeling and moisturizing feeling is also favorable. In the cosmetic of the present embodiment, regarding the content ratio of component A to component C relative to the total amount of oily components, it is preferred that the content of component A is 27 to 67% by mass, the content of component B is 27 to 67% by mass, and the content of component C is 5 to 25% by mass, and it is more preferred that the content of component A is 40 to 63% by mass, the content of component B is 40 to 63% by mass, and the content of component C is 10 to 25% by mass.

[0048] The cosmetic composition of this embodiment may, if necessary, contain other components in addition to components A, B, and C, to the extent that it does not impair the effects of the present invention. These other components are not particularly limited, as long as they are components other than components A, B, and C, and do not excessively impair the moisturizing effect of the esterified component A and do not impair the low-temperature stability improvement effect of the present invention. Various components commonly used in external skin compositions can be incorporated. Examples of these other components include, for example, various additives permitted for inclusion in cosmetics, cleansers, topical pharmaceuticals, etc. Specific examples of these other components include oily components (excluding components A, B, and C), aqueous components, polymer emulsions, surfactants, humectants, thickeners, preservatives, powders, pH adjusters, antioxidants, antioxidant aids, UV absorbers, fragrances, pigments, metal ion chelating agents, inorganic salts, organic acid salts, vitamins, and purified water.

[0049] The oily components are not particularly limited as long as they are not components A, B, and C, and include, for example, hydrocarbons such as liquid paraffin, heavy liquid isoparaffin, solid paraffin, α-olefin oligomer, polyisobutylene, polybutene, montane wax, ceresin wax, microcrystalline wax, polyethylene wax, and Fischer-Tropsch wax; waxes such as beeswax, candelilla wax, gay wax, candelilla wax, carnauba wax, and Japanese wax; esters such as polyglyceryl tetraisostearate, diglyceryl tetraisostearate, cholesterol fatty acid esters, glycerin fatty acid ester eicosanedioic acid condensate, dextrin palmitate, dextrin myristate, and dextrin fatty acid esters; fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, and oleic acid; stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, iso Higher alcohols such as stearyl alcohol, behenyl alcohol, stearyl alcohol, octyldodecanol, and isohexadecyl alcohol; low-molecular-weight dimethylpolysiloxane, high-molecular-weight dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether-modified polysiloxane, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymer, and alkoxy-modified poly Examples include silicones such as siloxanes; fluorinated oils such as perfluorodecane, perfluorooctane, and perfluoropolyethers; amino acid ester oils such as N-acyl glutamic acid such as stearoyl glutamic acid and N-lauroyl-L-glutamic acid di(cholesteryl or phytosterol / behenyl / octyldodecyl); and lanolin derivatives such as lanolin, liquid lanolin, lanolin acetate, liquid lanolin acetate, isopropyl lanolin fatty acid, and lanolin alcohol. These oily components may be used individually or in combination of two or more.

[0050] The aqueous component is not particularly limited and may include, for example, monohydric lower alcohols such as methanol, ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol; monohydric higher alcohols such as cetanol (cetyl alcohol, palmityl alcohol), stearyl alcohol (octadecyl alcohol), isostearyl alcohol (isooctadecanol), oleyl alcohol, cetostearyl alcohol, octyldodecanol, decyltetradecanol, hexyldecanol, behenyl alcohol, lauryl alcohol, lanolin alcohol, and hydrogenated lanolin alcohol; and propylene glycol (1,2- Examples include polyhydric alcohols such as propanediol, 1,3-propanediol, 1,3-butylene glycol (1,3-butanediol), pentylene glycol (1,2-pentanediol), neopentylene glycol (2,2-dimethyl-1,3-propanediol), isoprene glycol (3-methyl-1,3-butanediol), dipropylene glycol, glycerin, diglycerin, polyglycerin, polyethylene glycol, pentaerythritol, dipentaerythritol, sorbitol, and sorbitan; and extracts of aloe vera, witch hazel, witch hazel, cucumber, tomato, apple, lemon, lavender, and rose. These aqueous components may be used alone or in combination of two or more.

[0051] The polymer emulsion is not particularly limited, and examples include alkyl acrylate copolymer emulsion, alkyl methacrylate polymer emulsion, alkyl acrylate copolymer emulsion, alkyl methacrylate copolymer emulsion, acrylic acid / alkyl acrylate copolymer emulsion, methacrylic acid / alkyl methacrylate copolymer emulsion, alkyl acrylate / styrene copolymer emulsion, alkyl methacrylate / styrene copolymer emulsion, vinyl acetate polymer emulsion, polyvinyl acetate emulsion, vinyl acetate-containing copolymer emulsion, vinylpyrrolidone / styrene copolymer emulsion, and silicone-containing copolymer emulsion. These polymer emulsions may be used individually or in combination of two or more.

[0052] The surfactants mentioned above are not particularly limited and include nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and the like. These surfactants may be used individually or in combination of two or more types.

[0053] Nonionic surfactants are not particularly limited and include, for example, monoglycerides, sorbitan fatty acid esters, sucrose fatty acid esters, polyglycerin fatty acid esters, alkanolamides, amine oxides, polyoxyethylene alkyl ethers, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol mono fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene fatty acid amides, polyoxyethylene alkylamines, alkyl saccharides, α-monoalkylglyceryl ethers, dimethylpolysiloxane / polyoxyalkylene copolymers, dimethylpolysiloxane / monoalkylglyceryl ether copolymers, sorbitan sesquiisostearate, and the like.

[0054] The anionic surfactant is not particularly limited and includes, for example, alkylbenzene sulfonates, alkylnaphthalene sulfonates, polyoxyethylene alkyl ether sulfates, and polyoxyethylene lauryl ether phosphates.

[0055] Cationic surfactants are not particularly limited and include, for example, primary, secondary, and tertiary amine salts and quaternary ammonium salts having aliphatic hydrocarbon groups.

[0056] The amphoteric surfactant is not particularly limited, but examples include sodium β-laurylaminopropionate, lauryldimethylaminoacetic acid betaine, and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine.

[0057] Other surfactants that may be used include lecithins and soy saponins. Examples of lecithins include lecithin, hydrogenated lecithin, hydroxylated lecithin, lysolecithin, and hydrogenated lysolecithin. Examples of hydrogenated lecithins include hydrogenated soy phospholipids, hydrogenated rapeseed phospholipids, and hydrogenated egg yolk phospholipids.

[0058] Among the surfactants contained in the cosmetic composition of this embodiment, nonionic surfactants such as polyoxyethylene-modified silicone, polyglycerin fatty acid ester, polyoxyethylene alkyl, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor oil are preferred.

[0059] The aforementioned humectants are not particularly limited as long as they are not esterified products of component A, and examples include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, carotenoid acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, urea, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin ethylene oxide (EO) adduct, diglycerin propylene oxide (PO) adduct, Rosa japonica extract, Achillea millefolium extract, and Melilotus extract. These humectants may be used alone or in combination of two or more.

[0060] The aforementioned thickening agent is not particularly limited and may be, for example, a natural water-soluble polymer, a semi-synthetic water-soluble polymer, or a synthetic water-soluble polymer. These thickening agents may be used individually or in combination of two or more.

[0061] Examples of naturally occurring water-soluble polymers include plant-derived polymers such as agar, glucomannan, gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, quince seed, algae colloid (quince extract), and starch (rice, corn, potato, wheat); microbial polymers such as xanthan gum, dextran, succinoglucan, and pullulan; and animal-derived polymers such as collagen, casein, albumin, and gelatin.

[0062] Examples of semi-synthetic water-soluble polymers include starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, cellulose-based polymers such as methylcellulose, nitrocellulose, methylhydroxypropylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, and cellulose powder, and alginate-based polymers such as sodium alginate and propylene glycol alginate.

[0063] Examples of synthetic water-soluble polymers include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymer; polyoxyethylene polymers such as polyethylene glycol 20,000, 40,000, and 60,000; polyoxyethylene polyoxypropylene copolymer polymers; acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylamide; polyethyleneimine; and cationic polymers.

[0064] The aforementioned preservatives are not particularly limited, and examples include methylparaben, ethylparaben, and butylparaben. These preservatives may be used individually or in combination of two or more.

[0065] The pH adjusting agent is not particularly limited, and examples include EDTA, disodium EDTA, citric acid, sodium citrate, sodium hydroxide, potassium hydroxide, and triethanolamine. These pH adjusting agents may be used individually or in combination of two or more.

[0066] The antioxidants are not particularly limited, and examples include vitamin C and its derivatives and salts thereof, tocopherols and their derivatives and salts thereof, dibutylhydroxytoluene, butylhydroxyanisole, and gallic acid esters. These antioxidants may be used individually or in combination of two or more.

[0067] The antioxidants contained in the cosmetic composition of this embodiment are not particularly limited, and examples include phosphoric acid, citric acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphorate, phytic acid, and ethylenediaminetetraacetic acid. These antioxidants may be used alone or in combination of two or more.

[0068] The aforementioned powder is not particularly limited, and for example, extender pigments, coloring pigments, and pearl pigments can be used. The cosmetic composition of this embodiment may contain one type of powder, or two or more types. When the cosmetic composition of this embodiment contains powder, the powder content is not particularly limited and can be set appropriately considering the desired quality characteristics of the cosmetic composition. For example, the powder content relative to the total mass of the cosmetic composition is preferably 0 to 50% by mass, more preferably 0 to 40% by mass, and even more preferably 0 to 30% by mass.

[0069] The extender pigments are not particularly limited and include, for example, inorganic pigments such as silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, mica, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, zinc oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, and composite powders thereof; organic powders consisting of polyamide, polyester, polypropylene, polystyrene, polyurethane, nylon, silicone resin, vinyl resin, urea resin, phenolic resin, silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene-styrene copolymer, silk powder, cellulose, Nε-lauroyl-L-lysine, long-chain alkyl phosphate metal salts, N-mono-long-chain alkylacyl basic amino acids, metal soaps, etc., and composite powders thereof; and composite powders of the above inorganic powders and organic powders. The particle shape of these powders may be spherical, plate-shaped, needle-shaped, granular, or amorphous.

[0070] The coloring pigments are not particularly limited and include, for example, metal oxides such as titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; organic pigments such as tar-based dyes and lake pigments; and natural pigments such as carmine.

[0071] The pearl pigment is not particularly limited, and for example, pearl pigments obtained by coating mica, synthetic phlogopite, etc. with colorants such as titanium dioxide, iron oxide, silicon dioxide, Prussian blue, chromium oxide, carmine, or organic pigments can be used. These powders may be used after being subjected to various surface treatments such as water-repellent treatment or water-repellent / oil-repellent treatment by conventional methods.

[0072] Sunscreen cosmetics can also be manufactured by incorporating powders that have an ultraviolet shielding effect, such as metal oxide powders. The metal oxide powders that have an ultraviolet shielding effect are not particularly limited, and examples include titanium dioxide, zinc oxide, zirconium oxide, cerium oxide, etc., and one or more of these can be used.

[0073] The shape of the metal oxide powder having an ultraviolet shielding effect is not particularly limited, and examples include spherical, needle-shaped, spindle-shaped, plate-shaped, and flaky shapes. It may also be treated with an inorganic compound such as silica or alumina to reduce its surface activity. Furthermore, it is more preferable if the average particle size of the metal oxide powder is 10 to 100 nm, as this suppresses white cast when applied to the skin.

[0074] The aforementioned ultraviolet absorbers are not particularly limited, and include, for example, benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, and N,N-dimethyl PABA ethyl ester; anthranilic acid-based ultraviolet absorbers such as homomenthyl-N-acetylanthranilate; amyl salicylate, menthyl salicylate Salicylic acid-based UV absorbers such as silates, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanolphenyl salicylate; octyl cinnamate, ethyl-4-isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate, isoamyl-p-methoxy cinnamate, o Cinnamic acid-based UV absorbers such as cultyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-diparamethoxycinnamate; 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4 Benzophenone-based UV absorbers such as ,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenylbenzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, and 4-hydroxy-3-carboxybenzophenone;3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor, urocanic acid, ethyl urocanic acid, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, dibenzarazine, dianisioylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3 Examples include 3-dimethyl-2-norbornylidene)-3-pentan-2-one, and 2,4,6-trianilino-p-(carbo-2'-ethylhexyl-1'-oxy)1,3,5-triazine, 4-tent-butyl-4'-methoxydibenzoylmethane, ethylaminohydroxybenzoylhexyl benzoate, ethylhexyl triazine, t-butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylhexylbutamide triazone, and oxybenzone-3. These UV absorbers may be used individually or in combination of two or more.

[0075] When the cosmetic composition of this embodiment contains an ultraviolet absorber, the amount of ultraviolet absorber is not particularly limited and can be set appropriately considering the desired quality characteristics of the cosmetic composition. For example, the amount of ultraviolet absorber relative to the total cosmetic composition is preferably more than 0% by mass and 5.0% by mass or less, more preferably more than 0% by mass and 2.0% by mass or less, and even more preferably more than 0% by mass and 1.0% by mass or less.

[0076] The aforementioned pigments are not particularly limited, and examples include chlorophyll and β-carotene. These pigments may be used individually or in combination of two or more.

[0077] The aforementioned fragrances are not particularly limited and include, for example, plant-derived fragrances such as rose oil, jasmine oil, and lavender oil, and synthetic fragrances such as limonene, citral, linalool, and eugenol. These fragrances may be used individually or in combination of two or more.

[0078] The metal ion chelating agent is not particularly limited, and examples include disodium edetate, edetate salts, and hydroxyethanediphosphonic acid. These metal ion chelating agents may be used individually or in combination of two or more.

[0079] The inorganic salts are not particularly limited and include, for example, sodium chloride, potassium chloride, magnesium chloride, sodium sulfate, potassium sulfate, and magnesium sulfate. These inorganic salts may be used individually or in combination of two or more. The organic acid salts are not particularly limited and include, for example, citric acid, malic acid, tartaric acid and their salts, ascorbic acid and its salts, ascorbic acid derivatives and their salts. These organic acid salts may be used individually or in combination of two or more.

[0080] The aforementioned vitamins are not particularly limited, but include, for example, vitamin A, vitamin B1, vitamin B2, vitamin B6, vitamin E, vitamin K and their derivatives, pantothenic acid and its derivatives, biotin, and the like. These vitamins may be used individually or in combination of two or more.

[0081] (Method for manufacturing cosmetics) The cosmetics of this embodiment can be manufactured, for example, by heating and mixing components A, B, and C, and other components as needed, until they are all uniform, and then cooling. The raw material components may be mixed all at once or mixed sequentially.

[0082] There are no particular restrictions on the dosage form of the cosmetic composition in this embodiment, and it may have any appearance, such as transparent (state: e.g., solubilized or dissolved), translucent (state: e.g., dispersed in a fine particle state), cloudy (state: e.g., dispersed or emulsified), or two-layer separated (state: separated into two layers).

[0083] The cosmetics of this embodiment are not particularly limited and include, for example, makeup cosmetics such as lipstick, lip balm, lip gloss, lip color, foundation, concealer, blush, eyebrow pencil, eyeshadow, and eyeliner; body care cosmetics such as UV care products, deodorant products, body skin care products, body fragrance products, body cleansing products, and massage products; skin care cosmetics such as cleansing oils and cleansing balms, whitening cosmetics, UV care cosmetics, anti-aging products, skin care oils, and skin care balms; hair care cosmetics such as hair styling waxes, hair sticks, hair treatments, one-day hair colorants, and hair glosses; fragrance cosmetics such as perfumes, eau de toilette, eau de cologne, eau de parfum, and solid perfumes; and topical skin preparations such as ointments and sunscreens.

[0084] In this embodiment, it is particularly preferable that the cosmetic composition is an oil-based cosmetic composition in which the concentration of the oil-based moisturizer is increased. Examples of oil-based cosmetic compositions include lipstick, lip balm, lip gloss, lip color, oil foundation, massage oil, skincare oil, skincare balm, hair oil, cleansing oil, cleansing balm, and hair styling wax.

[0085] The present invention will be described in more detail below based on embodiments, but the present invention is not limited in any way to these descriptions. In the following, unless otherwise specified, "%" means mass percent.

[0086] <Evaluation of Low-Temperature Stability> Not solidifying when the storage temperature changes is an essential element for removing the product from the cosmetic container. This is because, for example, while cosmetics that were liquid at the time of purchase can be easily removed from the cosmetic container (bottle, pump, tube, jar, etc.), if the cosmetics solidify in cold seasons or low-temperature environments, it becomes difficult to remove them from the container. The fact that there is almost no change in the degree of cloudiness between samples stored at 5°C and samples stored at 25°C, and that there is no oil separation, is also an important element in ensuring the quality of the product. This is because, for example, if a product that was slightly cloudy at the time of purchase becomes cloudy or experiences oil separation in the cold winter months, consumers may mistakenly believe that the product has deteriorated.

[0087] Therefore, the low-temperature stability of the cosmetic was evaluated using the following method. 10 mL of the cosmetic to be evaluated was placed in a 20 mL screw-cap tube and left to stand for 24 hours in constant temperature baths at 5°C and 25°C. At 5°C, solidification was observed for 1 day, and the appearance of the sample stored at 5°C and the sample stored at 25°C was compared to observe whether there were any changes such as cloudiness or oil separation.

[0088] Low-temperature stability was evaluated according to the following criteria: Cosmetics that did not solidify after 1 day at 5°C and whose appearance was rated A or B were judged to have good low-temperature stability.

[0089] [Criteria for evaluating low-temperature stability (appearance)] A: No change in appearance between samples stored at 5°C and samples stored at 25°C B: Slight change in appearance between samples stored at 5°C and samples stored at 25°C C: Clear change in appearance between samples stored at 5°C and samples stored at 25°C

[0090] Figure 1 shows photographs of the appearance of a sample stored at 5°C for one day and a sample stored at 25°C for one day, along with examples of the results (evaluations A, B, and C) of the evaluation of low-temperature stability by comparing the two. As can be seen from Figure 1, if there is no change in appearance (evaluation A) or a slight change (evaluation B), the low-temperature stability of the sample is judged to be good, and if there is a clear difference in appearance (evaluation C), the low-temperature stability is judged to be poor.

[0091] <Evaluation of Usability> The usability of each cosmetic product was evaluated by a panel of experts based on various evaluation items such as "film thickness," "non-stickiness after application," "richness," and "moisturizing effect." In this evaluation, "film thickness" refers to the feeling of a film left on the skin after the cosmetic product has been applied. "Non-stickiness after application" refers to the feeling that the cosmetic product does not adhere well to the skin after application. "Richness" refers to the feeling of moderate resistance and good adhesion to the skin when applying the cosmetic product. "Moisturizing effect" refers to the moist feeling felt when touching the skin after applying the cosmetic product.

[0092] The feel of the cosmetics was evaluated according to the following evaluation criteria. A rating of A or B indicates that the feel of the product is good.

[0093] [Evaluation Criteria for User Experience] A: Excellent B: Good C: Slightly Poor D: Poor

[0094] [Examples 1-34, Comparative Examples 1-15] Cosmetics were manufactured using the oily components listed in Table 1, according to the formulations shown in Tables 2-7. A blank space in the content of an oily component in Tables 2-7 indicates that the content of that component is 0% by mass. Specifically, all raw material components were stirred and mixed at a temperature of 80°C, and then cooled to room temperature to manufacture the cosmetic.

[0095] The following oily components were used as listed in Table 1: Hexa(caprylic / capric acid)dipentaerythrityl: "Saracos DP810", manufactured by Nisshin Oillio Group Co., Ltd. Methylheptyl pelargonate: trade name "Emolid ISN", Industrial Quimica Lasem, S. A. U. Isononyl isononanoate manufactured by Nisshin Oillio Group: product name "Saracos 99" Neopentyl glycol diethylhexanoate manufactured by Nisshin Oillio Group: product name "Cosmol 525" Isotridecyl isononanoate manufactured by Nisshin Oillio Group: product name "Saracos 913" Triethylhexanoin manufactured by Nisshin Oillio Group: product name "T.I.O" Diisostearyl malate manufactured by Nisshin Oillio Group: product name "Cosmol 222" Polyglyceryl-6 octacaprylate manufactured by Nisshin Oillio Group: product name "Saracos HG-8" Dipentaerythrityl tetra(hydroxystearate / isostearate) manufactured by Nisshin Oillio Group: product name "Cosmol 168EV" Dipentaerythrityl hexahydroxystearate manufactured by Nisshin Oillio Group Taerythrityl: Product name "Cosmol 168M", manufactured by Nisshin Oillio Group Co., Ltd. Lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl): Product name "Eldew PS-306", manufactured by Ajinomoto Co., Ltd. Vaseline: Product name "Nomucoat W", manufactured by Nisshin Oillio Group Co., Ltd. Hexa(hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl: Product name "Cosmol 168ARV", manufactured by Nisshin Oillio Group Co., Ltd. Dimer dilinoleate (phytosteryl / isostearyl / cetyl / stearyl / behenyl): Product name "Plandool-S", manufactured by Nippon Seika Co., Ltd. Dimer dilinoleate dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl): Product name "Plandool-G", manufactured by Nippon Seika Co., Ltd.

[0096] In Table 1, "Oily component B'1" and "Oily component B'2" are liquid oils other than component B, and "Oily component C'1" to "Oily component C'3" are semi-solid oils other than component C. The number of carbon atoms and molecular weight of oily components A1 to B'2 are also shown in Table 1. Oily components B7, B8, and B'1 are mixtures containing oily component B'2 (polyglyceryl-6 octacaprylate) and oily component 2 (isononyl isononanoate) in the mass ratios of polyglyceryl-6 octacaprylate:isononyl isononanoate = 36:64, 50:50, and 82:18, respectively, and the number of carbon atoms and molecular weight were calculated from the content ratio.

[0097]

[0098]

[0099]

[0100]

[0101]

[0102]

[0103]

[0104] The low-temperature stability and usability of each cosmetic composition were evaluated. The evaluation results are shown in Tables 2 to 7. The cosmetic compositions of Examples 1 to 34 had good low-temperature stability and excellent film thickness, non-stickiness after application, richness, and moisturizing properties. In contrast, the cosmetic compositions of Comparative Examples 1 and 15, which did not contain component C, did not provide satisfactory film thickness, richness, or moisturizing properties. The cosmetic compositions of Comparative Examples 2, 4, and 6, which had a high proportion of component B, mainly failed to provide satisfactory richness and moisturizing properties. The cosmetic compositions of Comparative Examples 3, 5, and 7, which had a low proportion of component B, had poor low-temperature stability. The cosmetic compositions of Comparative Examples 8 and 9, which contained a liquid oil with a large number of carbon atoms, also had poor low-temperature stability. The cosmetic compositions of Comparative Examples 10 to 14, which contained a specific semi-solid oil, had poor low-temperature stability and also did not provide satisfactory usability.

[0105] [Example 35] Oil Foundation An oil foundation was manufactured using the formulation shown in Table 8, and its low-temperature stability and feel were evaluated. All raw material components were stirred and mixed thoroughly at a temperature of 90°C until uniform, then degassed under reduced pressure and poured into a gold dish. The gold dish was then cooled to 20°C to obtain the oil foundation.

[0106] The following ingredients were used in the oil foundation: Squalane: product name "Phytosqualane", manufactured by SOPHIM Corporation; Cyclopentasiloxane: product name "KF-995", manufactured by Shin-Etsu Chemical Co., Ltd.; Sorbitan sesquiisostearate: product name "Cosmol 182V", manufactured by Nisshin Oillio Group Co., Ltd.; Ceresin wax: product name "CERESIN #810", manufactured by Nikko Rica Co., Ltd.; Sericite: product name "Sericite FSE", manufactured by Japan Sericite Co., Ltd.; Spherical silica: product name "LB-1500", manufactured by JGC Catalysts & Chemicals Co., Ltd.; Spherical silicone: product name "KSP-100", manufactured by Shin-Etsu Chemical Co., Ltd.; Titanium dioxide: product name "MP-1133", manufactured by Teika Co., Ltd.

[0107]

[0108] The manufactured oil foundation exhibited good low-temperature stability, film thickness, richness, and moisturizing properties. When used, the oil-based foundation provided a soft feel, a smooth finish that minimized the appearance of pores and other unevenness, was less prone to shine, and had good staying power. It also offered excellent coverage for blemishes and other imperfections.

[0109] [Example 36] Hair oil Hair oil was manufactured using the formulation shown in Table 9, and its low-temperature stability and usability were evaluated. All components except isododecane were stirred and mixed at a temperature of 80°C, then cooled to room temperature, and then isododecane was added and stirred and mixed until homogenized to obtain the hair oil.

[0110] The following ingredients were used in the hair oil: Phytosteryl oleate: product name "Saracos PO", manufactured by Nisshin Oillio Group Co., Ltd. Tocopherol: product name "Tocopherol 100", manufactured by Nisshin Oillio Group Co., Ltd. Isododecane: product name "Marukazol R", manufactured by Maruzen Petrochemical Co., Ltd.

[0111]

[0112] The manufactured hair oil exhibited good low-temperature stability, film thickness, richness, and moisturizing properties. Furthermore, using this hair oil resulted in improved hair shine and manageability.

[0113] [Example 37] Cleansing Oil A cleansing oil was manufactured using the formulation shown in Table 10, and its low-temperature stability and usability were evaluated. All raw material components were stirred and mixed thoroughly at a temperature of 80°C until uniform, and then cooled to room temperature while stirring to obtain the cleansing oil.

[0114] The following ingredients were used in the cleansing oil: PEG-20 glyceryl triisostearate: trade name "Saracos GE-318", manufactured by Nisshin Oillio Group Co., Ltd. Cetyl ethylhexanoate: trade name "Saracos 816T", manufactured by Nisshin Oillio Group Co., Ltd. Caprylyl caprylate / capric acid: trade name "Emolid CC", manufactured by Industrial Quimica Lasem, S.A.U. Glyceryl behenate / eicosanedioate: trade name "Nomucoat HK-G", manufactured by Nisshin Oillio Group Co., Ltd.

[0115]

[0116] The manufactured cleansing oil exhibited good low-temperature stability, film thickness, richness, and moisturizing properties. Furthermore, when the cleansing oil was used, it demonstrated high makeup removal performance, and high stratum corneum moisture levels were maintained even after rinsing.

[0117] [Example 38] Water-in-oil Foundation A water-in-oil foundation was manufactured using the formulation shown in Table 11, and its low-temperature stability and feel were evaluated. The oily component and powder component were stirred and mixed at a temperature of 70°C until thoroughly homogenized. Then, a water-soluble component heated to 70°C was added, emulsified and dispersed using a homomixer, and cooled to obtain a water-in-oil foundation.

[0118] The following ingredients were used as raw materials for the water-in-oil foundation: Triethylhexanoin: trade name "T.I.O", manufactured by Nisshin Oillio Group; Isononyl isononanoate: trade name "Sarakos 99", manufactured by Nisshin Oillio Group; Ethylhexyl methoxycinnamate: trade name "Nomucoat TAB", manufactured by Nisshin Oillio Group; Squalane: trade name "Phytosqualane", manufactured by SOPHIM; Cyclopentasiloxane: trade name "KF-995", manufactured by Shin-Etsu Chemical Co., Ltd. Taerythrityl: Product name "Cosmol 168EV", manufactured by Nisshin Oillio Group Co., Ltd. Lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl): Product name "Eldew PS-306", manufactured by Ajinomoto Co., Ltd. Polyhydroxystearic acid: Product name "Saracos HS-6C", manufactured by Nisshin Oillio Group Co., Ltd. Disteardimonium hectorite: Product name "Benton 38V", manufactured by ELEMENTIS Co., Ltd. Cetyl dimethicone copolyol: Product name "ABIL EM 90, manufactured by Evonik Operations GmbH; PEG-10 Dimethicone: product name "KF-6017", manufactured by Shin-Etsu Chemical Co., Ltd.; Cetanol: product name "Calcol 6870", manufactured by Kao Corporation; Behenyl Alcohol: product name "Calcol 220-80", manufactured by Kao Corporation; Fine Particle Titanium Dioxide: product name "MT-100TV", manufactured by Teika Corporation; Fine Particle Zinc Oxide: product name "MZ-300", manufactured by Teika Corporation; (Dimethicone / Methicone) Copolymer Processed Powder (manufactured by Daito Chemical Industries, Ltd.); Polymethyl Methacrylate: product name "Matsumoto Microsphere M-100", manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd.; Tocopherol (product name "Tocopherol 100", manufactured by Nisshin Oillio Group Co., Ltd.) BG: Product name "1,3-Butylene Glycol", manufactured by Daicel Corporation. Glycerin: Product name "Concentrated Glycerin for Cosmetics", manufactured by Sakamoto Pharmaceutical Co., Ltd.

[0119]

[0120] The manufactured water-in-oil foundation exhibited good low-temperature stability, film thickness, richness, and moisturizing properties. When this water-in-oil foundation was used, it created a uniform, even-colored film with a glossy, beautiful finish.

Claims

1. A cosmetic composition containing component A, component B, and component C, wherein the content of component A is 24 to 68% by mass, the content of component B is 24 to 68% by mass, and the content of component C is 3 to 25% by mass, relative to the total oily components of the cosmetic composition, and the mass ratio of component A to component B (component A:component B) is 30:70 to 70:

30. Component A: An esterified compound of dipentaerythritol and one or more fatty acids selected from straight-chain fatty acids having 6 to 22 carbon atoms. Component B: An oily substance that is liquid at 20°C and has a molecular weight of 1000 or less, or a mixture of two or more oily substances that are liquid at 20°C, wherein the average molecular weight of the mixture is 1000 or less. Component C: One or more oily substances that are semi-solid at 20°C (excluding dimer dilinoleate ester and hexa(hydroxystearic acid / stearic acid / rosinic acid)dipentaerythrityl).

2. The cosmetic composition according to claim 1, wherein component A is an esterified product of dipentaerythritol and one or more fatty acids selected from straight-chain fatty acids having 6 to 10 carbon atoms.

3. The cosmetic composition according to claim 1, wherein the hydroxyl value of the esterified product of component A is 1 mg KOH / g or less.

4. The cosmetic composition according to claim 1, wherein component A is hexa(caprylic / capric acid)dipentaerythrityl or hexa(heptanoic acid / caprylic / capric acid)dipentaerythrityl.

5. The above component B is methylheptyl pelargonate, isononyl isononanoate, isotridecyl isononanoate, di(caprylic / capric acid)propanediol, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diisostearyl malate, castor oil, olive oil, avocado oil, palm oil, liquid paraffin, liquid branched paraffin, squalane, tri(caprylic / capric acid)glyceryl, triethylhexanoin, butyl stearate, ethylhexyl palmitate, (caprylic The cosmetic composition according to claim 1, comprising one or more oils selected from the group consisting of (capric acid / capric acid) coconut alkyl, (caprylic acid / capric acid) caprylyl, octyldodecyl myristate, isopropyl myristate, isopropyl lanolinate, hexyl lanolinate, diisopropyl adipate, diisopropyl sebacate, 2-octyldodecanol, polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, and trimethylolpropane triisostearate.

6. The cosmetic composition according to claim 1, wherein component C is one or more oils selected from the group consisting of hydroxy fatty acids and / or C8-22 linear or branched higher fatty acids and dipentaerythritol, N-acyl glutamate esters, and petrolatum.

7. The cosmetic composition according to claim 6, wherein the ester of the hydroxy fatty acid and / or a linear or branched higher fatty acid of C8-22 with dipentaerythritol is one or two oils selected from the group consisting of tetra(hydroxystearic acid / isostearate)dipentaerythrityl and hexahydroxystearate dipentaerythrityl.

8. The cosmetic composition according to claim 6, wherein the N-acyl glutamate ester is one or more oils selected from the group consisting of lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl), lauroyl glutamate (phytosteryl / behenyl / octyldodecyl / isostearyl), and lauroyl glutamate di(cholesteryl / behenyl / octyldodecyl).

9. The cosmetic composition according to any one of claims 1 to 8, wherein the cosmetic composition is an oil-based cosmetic composition.

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