Oil-based cosmetics

Abstract

To provide an oil-based cosmetic composition that exhibits excellent storage stability in both low-temperature, low-humidity and high-temperature, high-humidity environments, while also achieving a balance between thickness and spreadability during application. [Solution] An oily cosmetic composition comprising: component (A), which is at least one oil that is liquid at 25°C and selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils; and component (B), which is an ester wax EW consisting of a tetraester TE having a specific structure and a partial ester PE, wherein the TE and PE are in a specific mass ratio, characterized in that the total content of component (A) and component (B) in 100% by mass of the oily cosmetic composition is 15 to 100% by mass, and the mass ratio of component (A) to component (B) is ((A):(B)) is 70:30 to 95:5.

Description

[Technical Field]

[0001] This invention relates to oil-based cosmetics. [Background technology]

[0002] Oil-based cosmetics, primarily composed of liquid oil, are used in makeup products such as lipsticks, foundations, and eyeshadows, as well as sunscreens, due to their excellent adhesion and water resistance. Furthermore, in recent years, as the oil and water resistance of these oil-based cosmetics has improved, their compatibility with oily components and superior dirt-removing properties have led to the widespread use of oil-based cosmetics such as cleansing creams and cleansing balms as cleansing products. Given the wide range of consumer needs for these oil-based cosmetics, there is a demand for products that balance both storage stability and user experience.

[0003] For example, Patent Document 1 describes a solid wax composition containing candelilla wax and a monoester with a total carbon number of 40 to 48, wherein the mass ratio of these is within a specific range, which has an excellent hardness-adjusting effect and can be used as a solidifying agent for various cosmetics, and that cosmetics containing this composition exhibit excellent shape retention, oil stain suppression effect during use, good feel, and storage stability.

[0004] Further, for example, Patent Document 2 discloses an oily gel composition containing (A) an organically modified clay mineral, (B) octyl p-methoxycinnamate, (C) a modified silicone having an alkyl group with 12 or more carbon atoms and a polyoxyalkylene group or polyglyceryl group, (D) a non-volatile oil agent that is liquid at 25°C, and (E) one or more selected from water, lower alcohols and polyols. It is described in Patent Document 2 that such an oily gel composition is in a non-flowable gel state at rest, but its fluidity is improved by physical force such as stirring (shaking), making it easy to take out, and it returns to a non-flowable gel when left to stand further, so that the gel can be prevented from dripping even if the container is tipped over during storage, and by applying it to the skin after shaking with physical force, it spreads while maintaining its thickness, providing a thick oil film feel on the skin.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of Invention

Problems to be Solved by the Invention

[0006] In recent years, opportunities to use cosmetics have increased even in low-temperature environments such as those for winter sports, and high-temperature environments under the scorching summer sun. However, the above-mentioned Patent Documents 1 and 2 do not examine whether the storage stability and desired application feel of cosmetics can be obtained even in high-temperature high-humidity or low-temperature low-humidity environments.

[0007] An object of the present invention is to provide an oily cosmetic that is excellent in storage stability in both low-temperature low-humidity environments and high-temperature high-humidity environments, and can achieve both thickness during application and good spreadability.

Means for Solving the Problems

[0008] The present inventors have found that an oily cosmetic containing a specific ester wax in a specific ratio has excellent storage stability in both low-temperature low-humidity environments and high-temperature high-humidity environments, and can achieve both good thickness upon application and good spreadability, leading to the completion of the present invention.

[0009] That is, the present invention is as follows. [1] An oily cosmetic comprising the following components (A) and (B), An oily cosmetic characterized in that, in 100 mass% of the oily cosmetic, the total content of the component (A) and the component (B) is 15 to 100 mass%, and the mass ratio of the component (A) to the component (B) ((A):(B)) is 70:30 to 95:5. Component (A): At least one oil that is liquid at 25°C selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils Component (B): An ester mixture composed of a tetraester TE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, and a partial ester PE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, wherein the mass ratio (TE:PE) of the tetraester TE to the partial ester PE is 80:20 to 98:2, the ester wax EW Effects of the Invention

[0010] The oily cosmetic of the present invention has excellent storage stability in low-temperature low-humidity environments and high-temperature high-humidity environments, and can achieve both good thickness upon application and good spreadability. Modes for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to the embodiments described in the present specification, and various modifications can be made without departing from the gist of the present invention. Furthermore, the oily cosmetic composition of the present invention is a cosmetic composition in which the oily component is a continuous phase. Specifically, it refers to a non-aqueous oily cosmetic composition that is substantially free of water, or a water-in-oil cosmetic composition in which the oily component (oil phase) is a continuous phase in which the aqueous phase is dispersed. In addition, the form of the oily cosmetic composition of the present invention is not particularly limited, but may be liquid, gel, cream, balm, or solid, for example. In this invention, a low-temperature environment refers to an environment below 5°C, a normal temperature environment refers to an environment between 5°C and 35°C, and a high-temperature environment refers to an environment above 35°C. Furthermore, a low-humidity environment refers to an environment with a relative humidity of less than 45%, a normal humidity environment refers to an environment with a relative humidity of 45°C and 85%, and a high-humidity environment refers to an environment with a relative humidity exceeding 85%. Furthermore, in this invention, a numerical range defined using the symbol "~" includes the numerical values ​​at both ends (upper and lower limits) of "~". For example, "2~10" represents the range of 2 to 10. Furthermore, within the numerical range described in the present invention, the upper or lower limit of that numerical range can be replaced with the values ​​shown in the examples or values ​​uniquely derived from the examples. Furthermore, among the numerical values ​​described to explain the present invention, the numerical values ​​that may include decimal places are, unless otherwise specified, obtained by rounding a digit that was one place smaller than the smallest digit included in the numerical value. Furthermore, in this invention, the number of carbon atoms in a compound or substituent may be expressed as C1, C2, C3, etc. In this case, C1, C2, and C3 mean one carbon atom, two carbon atoms, and three carbon atoms, respectively.

[0012] The oily cosmetic composition of the present invention contains, as component (A), at least one oil that is liquid at 25°C, selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils, and further contains, as component (B), an ester mixture consisting of a tetraester TE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, and a partial ester PE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, wherein the mass ratio (TE:PE) of the tetraester TE to the partial ester PE is 80:20 to 98:2, and contains an ester wax EW.

[0013] [Ingredient (A)] The component (A) used in the present invention is at least one oil that is liquid at 25°C, selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils.

[0014] Examples of hydrocarbon oils, though not particularly limited, include saturated or unsaturated hydrocarbons such as liquid paraffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, squalane, squalene, pristane, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, tetradecene, isohexadecane, isododecane, α-olefin oligomers, nonane, decane, dodecane, undecane, tridecane, tetradecane, and pentadecane. Other examples of hydrocarbon oils include mineral oil.

[0015] Ester oils are not particularly limited, but examples include vegetable oils such as olive oil, sunflower oil, palm oil, jojoba oil, rapeseed oil, and macadamia nut oil; glycerin and fatty acid esters such as caprylic / capric triglyceride and glyceryl triethylhexanoate; isononyl isononanoate, cetyl ethylhexanoate, ethylhexyl palmitate, isopropyl myristate, octyldodecyl myristate, hexyl laurate, isotridecyl isononanoate, ethyl oleate, and palmitic acid. Examples include esters of fatty acids such as isopropyl and monohydric aliphatic alcohols, esters of fatty acids such as di(caprylic / capric acid) propylene glycol, propylene glycol diisostearate, polyglyceryl isostearate, pentaerythrityl tetraethylhexanoate and polyhydric alcohols, esters of polyhydric carboxylic acids or hydroxycarboxylic acids such as triethyl citrate, diisopropyl sebacate, and diisostearyl malate and alcohols, and oligoesters such as polyhydroxystearic acid. Other examples of ester oils include homosalate, ethylhexyl salicylate, cinoxate, and ethylhexyl methoxycinnamate.

[0016] Examples of silicone oils are not particularly limited, but include dimethyl silicone oils such as methylpolysiloxane (sometimes called dimethylpolysiloxane or dimethicone) and highly polymerized methylpolysiloxane, methylphenyl silicone oils such as methylphenylpolysiloxane, cyclic silicone oils such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane (cyclopentasiloxane), and dodecamethylcyclohexasiloxane, amino-modified silicones such as aminopropylmethylsiloxane-dimethylsiloxane copolymer, aminoethylaminopropylsiloxane-dimethylsiloxane copolymer, and aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer, modified silicones such as carboxy-modified silicone, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy-modified silicone, fluorine-modified silicone, and alkyl-modified silicone, as well as methylhydrogenpolysiloxane and dimethiconol.

[0017] The above component (A) can be appropriately selected depending on the use of the oily cosmetic composition of the present invention and is not particularly limited, but it is preferable to include either a hydrocarbon oil or an ester oil, and more preferably both a hydrocarbon oil and an ester oil, in order to more significantly exhibit the effects of the present invention. Furthermore, in the oily cosmetic composition of the present invention, the total content of hydrocarbon oil and ester oil in 100 parts by mass of the total amount of component (A) is not particularly limited, but is preferably 50 to 99 parts by mass, and more preferably 60 to 95 parts by mass, in order to more significantly exhibit the effects of the present invention.

[0018] [Component (B)] The ester wax EW, component (B) used in the present invention, is an ester mixture consisting of a tetraester TE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, and a partial ester PE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, with a mass ratio (TE:PE) of the tetraester TE to the partial ester PE being 80:20 to 98:2.

[0019] (Tetraester TE) The tetraester TE contained in the above ester wax EW is a pentaerythritol tetraester represented by the following structural formula (I).

[0020]

Chemical Formula

[0021] The above ester wax EW may contain only one type of compound as the above tetraester TE, or may contain a combination of two or more types of compounds. Note that in the present invention, R 1 CO, R 2 CO, R 3 CO and R 4 CO are not distinguished from each other, and stereoisomers of the compound represented by the above structural formula (I) are regarded as the same tetraester TE. For example, when the number of carbon atoms of R 1 CO, R 2 CO, R 3 CO and R 4 CO in the above structural formula (I) are denoted as C1, C2, C3 and C4 respectively, the tetraester TE of the following Example (1) and the tetraester TE of the following Example (2) are regarded as identical in the present invention. Example (1): C1=18, C2=20, C3=22, C4=24 Example (2): C1=18, C2=22, C3=20, C4=24

[0022] R in the above structural formula (I) 1 CO, R 2 CO, R 3 CO and R 4CO are each independently linear saturated acyl groups having 14 to 26 carbon atoms, and are residues of linear saturated fatty acids having 14 to 26 carbon atoms used as raw materials. In order to more significantly demonstrate the effects of the present invention, R 1 CO, R 2 CO, R 3 CO and R 4 CO is preferably a linear saturated acyl group with 16 to 24 carbon atoms, independently of each other. 1 CO, R 2 CO, R 3 CO and R 4 It is preferable that the linear saturated acyl group represented by CO contains at least one linear saturated acyl group having 18 to 22 carbon atoms.

[0023] Specific examples of the above-mentioned tetraester TE include pentaerythritol tetrastearate, pentaerythritol tetrabehenate, pentaerythritol tetrapalmitate, pentaerythritol tetraarachidate, pentaerythritol tetralignocellate, pentaerythritol monostearate tribehenate, pentaerythritol monoarachidate tribehenate, pentaerythritol monolignocellate tribehenate, pentaerythritol monopalmitate tristearate, and pentaerythritol monostearate tripalmitate. In particular, to more significantly demonstrate the effects of the present invention, at least one selected from the group consisting of pentaerythritol tetrastearate, pentaerythritol tetrabehenate, pentaerythritol tetrapalmitate, pentaerythritol tetraarachidate, pentaerythritol monostearate tribehenate, and pentaerythritol monoarachidate tribehenate is preferably used, at least one selected from the group consisting of pentaerythritol tetrastearate, pentaerythritol tetrabehenate, pentaerythritol monostearate tribehenate, and pentaerythritol monoarachidate tribehenate is more preferably used, and at least one selected from the group consisting of pentaerythritol tetrastearate and pentaerythritol tetrabehenate is particularly preferably used.

[0024] In this invention, among the one or more tetraesters TE contained in the ester wax EW, the tetraester TE with the highest content is referred to as "tetraester TE A It is referred to as ". In order to more significantly demonstrate the effects of the present invention, the above-mentioned preferred tetraester TE is used. A It is preferable that this be the case. Tetraester TE A The content of is preferably 15 to 95% by mass, more preferably 17 to 80% by mass, and even more preferably 30 to 70% by mass, when the total amount of tetraester TE is 100% by mass, in order to more significantly exhibit the effects of the present invention. Furthermore, the above tetraester TE contained in the ester wax EW of the present invention A This may consist of only one type or two or more types. The above tetraester TE contained in ester wax EW A If there are multiple types, the above tetraester TE A The content of various tetraesters TE A The content shall be such that if the ester wax EW contains only one type of tetraester TE, then the content of that one type of tetraester TE shall be such that the content of tetraester TE A That is the case. In addition, in the present invention, the above tetraester TE A A different tetraester TE is called "tetraester TE B It is sometimes referred to as "[...]."

[0025] (Partial ester) The partial ester PE contained in the above ester wax EW is the R of the compound shown in the above structural formula (I). 2 CO, R 3 CO and R 4This is a compound in which one to three groups selected from the group consisting of CO are replaced with hydrogen atoms (H). The above partial ester PE may be a monoester, diester, or triester. Furthermore, the above ester wax EW may contain only one compound as the partial ester PE, or it may contain a combination of two or more compounds.

[0026] (Linear saturated fatty acids) Examples of linear saturated fatty acids having 14 to 26 carbon atoms used in the above-mentioned tetraester TE and partial ester PE include myristic acid, palmitic acid, margaric acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, and cerotic acid. Among these, at least one selected from the group consisting of palmitic acid, stearic acid, arachidic acid, behenic acid, and lignoceric acid is preferably used, and at least one selected from the group consisting of stearic acid, arachidic acid, and behenic acid is more preferably used, in order to more significantly exhibit the effects of the present invention. From a similar viewpoint, it is preferable that the above-mentioned linear saturated fatty acids having 14 to 26 carbon atoms contain linear saturated fatty acids having 18 to 22 carbon atoms in a proportion of 90% by mass or more, and more preferably 95% by mass or more.

[0027] Furthermore, in order to more significantly demonstrate the effects of the present invention, it is more preferable that the straight-chain saturated fatty acid having 14 to 26 carbon atoms is only a straight-chain saturated fatty acid having 16 to 24 carbon atoms. The above-mentioned linear saturated fatty acids having 14 to 26 carbon atoms may consist of only one type of fatty acid, or may contain a combination of two or more types of fatty acids. The amount of the fatty acid with the highest content among the fatty acids contained in the above-mentioned linear saturated fatty acids having 14 to 26 carbon atoms is not particularly limited, but in order to more significantly demonstrate the effects of the present invention, it is preferable that it be 60% by mass or more, more preferably 70% by mass or more, and even more preferably 80% by mass or more, when the total amount of linear saturated fatty acids having 14 to 26 carbon atoms is taken as 100% by mass. Similarly, it is preferable that it be 99% by mass or less, more preferably 94% by mass or less, and even more preferably 92% by mass or less. In order to more significantly demonstrate the effects of the present invention, it is preferable that the above-mentioned preferred fatty acid is the fatty acid with the highest content.

[0028] (Mass ratio of tetraesters to partial esters) In the above-mentioned ester wax EW, the mass ratio of tetraester TE to partial ester PE (TE:PE) is 80:20 to 98:2. Therefore, when the mass of the above-mentioned ester wax EW is taken as 100% by mass, the content of tetraester TE is 80 to 98% by mass, and the content of partial ester PE is 2 to 20% by mass. To more significantly enhance the effects of the present invention, the above mass ratio (TE:PE) is preferably 90:10 to 96:4. When the ester wax EW contains two or more types of tetraester TE, the tetraester TE content is the total content of the multiple types of tetraester TE. When the ester wax EW contains two or more types of partial ester PE, the partial ester PE content is the total content of the multiple types of partial ester PE. The content of each component constituting the ester wax EW can be calculated, for example, from the amount of raw materials added during manufacturing, or it can be measured by analyzing the ester wax EW using gas chromatography (GC).

[0029] (Wax composition W) Component (B), which is the ester wax EW described above, is used, for example, by melting and mixing it with component (A) etc. during the production of the oily cosmetic composition of the present invention. During the production of the oily cosmetic composition of the present invention, a wax composition W containing the tetraester TE and the partial ester PE described above, and a different component (which may be referred to as "component X" in the present invention) may be mixed with component (A) etc. to produce an ester wax EW consisting of a predetermined tetraester TE and partial ester PE. Examples of component X include linear saturated fatty acids having 14 to 26 carbon atoms and pentaerythritol derived from the raw materials of the tetraester TE and partial ester PE, as well as esters of pentaerythritol with fatty acids different from the linear saturated fatty acids having 14 to 26 carbon atoms that were contained in the raw fatty acids. In this way, when the wax composition W is formulated to satisfy the conditions for ester wax EW as component (B) during the production of the oily cosmetic composition of the present invention, component X contained in the wax composition W is treated as a different component from components (A) and (B) of the oily cosmetic composition of the present invention, as described later.

[0030] Furthermore, the ester wax EW or wax composition W before being added to the oily cosmetic composition of the present invention may be a composition obtained by uniformly melting and mixing beforehand, or a composition obtained by physically mixing finely ground materials of each component.

[0031] In the above wax composition W, the content of the ester wax EW is not particularly limited, but may be, for example, 90 to 100% by mass, or 95 to 99% by mass. In the above wax composition W, the content of component X is not particularly limited, but may be, for example, 0 to 10% by mass, or 1 to 5% by mass.

[0032] (Method for manufacturing wax composition W) Examples of methods for producing the above-mentioned wax composition W include adjusting the composition of the raw materials, fatty acids and pentaerythritol, so that the mass ratio (TE:PE) of the tetraester TE and the partial ester PE contained in the wax composition W is 80:20 to 98:2, and then carrying out the esterification reaction.

[0033] Furthermore, as an example of a method for producing the wax composition W, a method can be given that includes the steps of obtaining a crude ester product of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, and purifying the crude product. The process of obtaining a crude ester product of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol is carried out, for example, by dehydration condensation reaction between a raw material fatty acid containing a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol. The above raw material fatty acids mainly consist of straight-chain saturated fatty acids having 14 to 26 carbon atoms, and their purity may be less than 100% by mass. Preferably, the main component is a straight-chain saturated fatty acid having 18 to 22 carbon atoms. In the present invention, the purity of the raw material fatty acids is the content of the most abundant fatty acid when the total amount of raw material fatty acids is 100% by mass. Furthermore, the above raw material fatty acids may consist only of straight-chain saturated fatty acids having 14 to 26 carbon atoms, or only of straight-chain saturated fatty acids having 16 to 24 carbon atoms. Alternatively, the above raw material fatty acids may contain components other than straight-chain saturated fatty acids having 14 to 26 carbon atoms. Although not particularly limited, in order to more significantly demonstrate the effects of the present invention, the content of straight-chain saturated fatty acids having 14 to 26 carbon atoms in 100% by mass of the total amount of the above raw material fatty acids is preferably 95% by mass or more, and more preferably 99% by mass or more. The crude ester product of straight-chain saturated fatty acids with 14-26 carbon atoms and pentaerythritol is tetraester TE, which has the highest content. A It contains at least a partial ester PE. When a raw material fatty acid containing two or more straight-chain saturated fatty acids with 14 to 26 carbon atoms is used, the crude product is usually tetraester TE as the main product. A It contains tetraester TE as a by-product. BThe product also contains partial ester PE. The amount of partial ester PE produced can be adjusted by the ratio of raw materials and reaction conditions. In the step of purifying the crude product, it is preferable to reduce the content of unreacted raw material fatty acids contained in the crude product. Examples of purification methods include distillation, recrystallization, and liquid-liquid treatment using a basic aqueous solution. It is particularly preferable to reduce the content of unreacted fatty acids by liquid-liquid treatment using a basic aqueous solution. In the step of purifying the crude product, the wax composition W may be obtained by purifying the crude product. Alternatively, the wax composition W may be obtained by purifying the crude product to obtain the purified ester, and then mixing the purified ester with an ester of a separately prepared linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol.

[0034] [Content of ingredients (A) and (B)] In the oily cosmetic composition of the present invention, the content of component (A) in 100% by mass of the oily cosmetic composition is appropriately adjusted according to the intended use of the oily cosmetic composition and is not particularly limited. In the case of non-aqueous oil-based cosmetics, the content of component (A) may be, for example, 50 to 95% by mass, or 60 to 90% by mass. On the other hand, the content of component (A) in a non-aqueous oil-based cosmetic composition may be less than 50% by mass. Examples of non-aqueous oil-based cosmetic compositions in which the content of component (A) is less than 50% by mass include cosmetics with a high proportion of inorganic materials, such as eyeshadows and powder foundations. In the case of such non-aqueous oil-based cosmetic compositions, the content of component (A) may be, for example, 5 to 40% by mass, or 10 to 30% by mass. In the case of water-in-oil type cosmetics, the content of component (A) may be, for example, 5 to 40% by mass, or 10 to 30% by mass. In this invention, component (A) can be one of the liquid oils described above, or a combination of two or more.

[0035] In the oily cosmetic composition of the present invention, the content of component (B), which is the ester wax EW mentioned above, in 100% by mass of the oily cosmetic composition is appropriately adjusted according to the intended use of the oily cosmetic composition and is not particularly limited. In the case of non-aqueous oil-based cosmetics, the content of component (B) may be, for example, 1 to 40% by mass, or 5 to 30% by mass. On the other hand, in the case of a non-aqueous oily cosmetic composition in which the content of component (A) as described above is less than 50% by mass, the content of component (B) may be, for example, 1 to 10% by mass, or 3 to 8% by mass. In the case of water-in-oil type cosmetics, the content of component (B) may be, for example, 1 to 10% by mass, or 3 to 8% by mass.

[0036] In the oily cosmetic composition of the present invention, the total content of component (A) and component (B) in 100% by mass of the oily cosmetic composition is 15 to 100% by mass, and the mass ratio of component (A) to component (B) is ((A):(B)) is 70:30 to 95:5. The total content of component (A) and component (B) above is preferably adjusted according to the intended use of the oily cosmetic composition of the present invention and is not particularly limited, but from the viewpoint of more significantly exhibiting the effects of the present invention, the lower limit of the total content of component (A) and component (B) above in the oily cosmetic composition of the present invention is preferably 21% by mass or more. When the oily cosmetic composition of the present invention is a non-aqueous oily cosmetic composition, the total content of component (A) and component (B) above may be, for example, 50 to 100% by mass, 60 to 95% by mass, or 70 to 90% by mass. When the oily cosmetic composition of the present invention is a water-in-oil type cosmetic composition, the total content of component (A) and component (B) above may be, for example, 15 to 45% by mass, or 21 to 40% by mass. In the case of a non-aqueous oily cosmetic composition in which the content of component (A) as described above is less than 50% by mass, the total content of component (A) and component (B) may be, for example, 15 to 45% by mass, or 21 to 40% by mass. Furthermore, although not particularly limited, in order to more significantly exhibit the effects of the present invention, the mass ratio ((A):(B)) of component (A):(B) in the oily cosmetic composition of the present invention is preferably 80:20 to 92:8.

[0037] In this invention, when the numerical values ​​representing the individual contents of component (A) and component (B), their total contents, and the mass ratios of (A):(B) and TE:PE, etc., are integer values, these integer values ​​are obtained by rounding to the first decimal place. When calculating the total contents of two or more components, the numerical values ​​for the contents of each component are rounded to the first decimal place by rounding to the second decimal place. When calculating the mass ratios, the numerical values ​​for the mass of each component are rounded to the first decimal place by rounding to the second decimal place.

[0038] [Other ingredients] The oily cosmetic composition of the present invention may contain other optional components (other components) in addition to the above-described components (A) and (B), as long as their effects are not impaired. For example, the other components may include fatty acids and pentaerythritol derived from the raw materials used in the preparation of component (B), or fatty acids and pentaerythritol that are intentionally added separately from the unreacted raw materials. Other ingredients may include those commonly found in cosmetics, such as waxes different from ingredient (B) above, surfactants (nonionic surfactants, cationic surfactants, anionic surfactants, amphoteric surfactants, etc.), colorants, humectants, thickeners, preservatives, antibacterial agents, UV scattering agents, UV absorbing agents, antioxidants, beauty ingredients, organic solvents, etc.

[0039] Examples of waxes different from component (B) above include solid oils and fats such as hydrogenated castor oil, hydrogenated palm oil, and hydrolyzed rapeseed oil; hydrocarbon waxes such as polyethylene wax, Fischer-Tropsch wax, and microcrystalline wax; synthetic ester waxes different from the ester wax EW of the present invention, such as behenyl behenate and arachidyl behenate; and natural waxes such as sunflower seed wax, carnauba wax, candelilla wax, hydrogenated jojoba oil, and rice bran wax.

[0040] Examples of surfactants include nonionic surfactants such as glycerin fatty acid esters, sorbitan fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene alkyl ethers, and polyoxyalkylene fatty acid esters; cationic surfactants such as alkylamine salts and alkyltrimethylammonium salts; anionic surfactants such as alkyl phosphates, polyoxyalkylene alkyl ether phosphates, sulfonates, alkyl sulfates, and polyaspartates; and amphoteric surfactants such as lecithin, carbobetine-type amphoteric surfactants, sulfobetine-type amphoteric surfactants, and amino acid-type amphoteric surfactants.

[0041] In this invention, esters that are liquid at 25°C may be used as nonionic surfactants. Among the esters that are liquid at 25°C, those with an HLB value of 4 or higher are used as nonionic surfactants, and those with an HLB value of less than 4 are used as component (A) described above. Here, the HLB value is an integer value obtained by rounding to the first decimal place. The HLB value of nonionic surfactants can be determined by the ATLAS method, and specifically, it can be calculated using the following formula (1). HLB value = 20 × [1 - (S / A)] (1) In formula (1) above, S is the saponification value (mgKOH / g) of the nonionic surfactant, and A is the acid value (mgKOH / g) of the fatty acid constituting the nonionic surfactant.

[0042] As colorants, those commonly used in cosmetics may be used, for example, metal oxides such as titanium dioxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; and inorganic pigments such as carbon black; synthetic organic pigments such as Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment.

[0043] Examples of thickeners include partially cross-linked organopolysiloxanes such as dimethicone crosspolymer, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl vinyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, (dimethicone / vinyl trimethylsiloxysilicate) crosspolymer, and (dimethicone / vinyl dimethicone) crosspolymer; dextrin palmitate, (palmitic acid / ethylhexanoic acid) dextrin, dextrin stearate, (palmitic acid / Examples include dextrin fatty acid esters such as dextrin stearic acid, dextrin oleate, dextrin isopalmitate, and dextrin isostearate; sucrose fatty acid esters such as sucrose stearate and sucrose stearate acetate; inulin stearate; starch fatty acid esters; and metal soaps such as aluminum isostearate, hydroxystearic acid, calcium stearate, aluminum stearate, magnesium stearate, aluminum myristate, and magnesium myristate.

[0044] Examples of antioxidants include tocopherol and ascorbic acid. Examples of beauty ingredients include vitamins, anti-inflammatory agents, and herbal medicines. Examples of preservatives include parahydroxybenzoic acid esters and phenoxyethanol.

[0045] Examples of ultraviolet scattering agents include fine metal oxides such as zinc oxide, titanium oxide, and cerium oxide, as well as aggregates and composite powders thereof. Examples of UV absorbers include diethylaminohydroxybenzoyl hexyl benzoate, oxybenzone-6, ethylhexyl triazone, and bisethylhexyloxyphenol methoxyphenyl triazine.

[0046] If the oily cosmetic composition of the present invention is a water-in-oil type cosmetic composition, it further contains water. Examples of water include purified water such as distilled water and deionized water, as well as tap water and industrial water. The water content in 100% by mass of the water-in-oil cosmetic composition is adjusted as appropriate depending on the application and is not particularly limited, but may be, for example, 35 to 85% by mass, 50 to 85% by mass, or 60 to 80% by mass.

[0047] On the other hand, if the oily cosmetic composition of the present invention is a non-aqueous oily cosmetic composition, it is substantially water-free. The water content in 100% by mass of the non-aqueous oily cosmetic composition is preferably 1% by mass or less, and more preferably 0.1% by mass or less.

[0048] The uses of the oil-based cosmetic composition of the present invention are not particularly limited, but examples include non-aqueous oil-based cosmetic compositions such as lipstick, cleansing cream, and cleansing balm, as well as water-in-oil cosmetic compositions such as waterproof sunscreen. From the viewpoint of significantly demonstrating the effects of the present invention, the oil-based cosmetic composition of the present invention is preferably a non-aqueous oil-based cosmetic composition. [Examples]

[0049] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples. Unless otherwise specified, parts and percentages are based on mass.

[0050] In the following, the acid value was measured in accordance with JOCS (Japan Oil Chemists' Society) 2.3.1-1996.

[0051] In addition, the conditions for gas chromatography (GC) were set as follows. <GC conditions> Gas chromatograph: manufactured by Shimadzu Corporation, Nexis GC-2030 Column: manufactured by RESTEK, MXT (registered trademark)-1HT Sim Dist Column temperature: the temperature was raised from a starting temperature of 100°C to 430°C at a rate of 10°C / min, and held at 430°C for 10 minutes. Injection temperature: 430°C Detection temperature: 430°C

[0052] [Synthesis of Wax Composition] Using the raw material fatty acids shown in Table 1 and pentaerythritol, wax compositions W-1 to W-12 shown in Table 2 were obtained by the method shown in the following Synthesis Examples. The raw material fatty acids FA-1 to FA-7 contained a plurality of types of linear saturated fatty acids with different carbon numbers, as shown in Table 1. In the raw material fatty acids shown in Table 1, the carbon numbers C12, C14, C16, C18, C20, C22, C24, C26, C28 and C30 each represent the carbon number of the linear saturated fatty acid. In addition, Table 1 shows the mass proportion (% by mass) of each linear saturated fatty acid contained in each raw material fatty acid.

[0053] <Synthesis Example 1: Synthesis of Wax Composition W-1> To a 3 L four-necked flask equipped with a thermometer, a nitrogen inlet tube, stirring blades and a condenser tube, 200 g (1.47 mol) of pentaerythritol and 2058.5 g (6.05 mol) of fatty acid FA-1 were added, and the mixture was reacted at 240°C under a nitrogen stream. The obtained crude ester product was 2232.3 g, and had an acid value of 8.7 mgKOH / g. To the crude ester product, 900 g of toluene and 500 g of 2-propanol were added, and a 10% by mass potassium hydroxide aqueous solution containing an amount of potassium hydroxide equivalent to 2.0 times the residual acid value of the crude ester product was added. The mixture was stirred at 70°C for 30 minutes. After that, it was allowed to stand for 30 minutes to separate and remove the aqueous layer (lower layer). The mixture was washed with water four times until the pH of the wastewater became neutral. The solvent in the remaining ester layer was removed by distillation under reduced pressure of 1 kPa at 180°C, and the mixture was filtered to obtain 1800.7 g of wax composition W-1.

[0054] <Synthesis Example 2: Synthesis of Wax Composition W-2> In a 3 L four-necked flask equipped with a thermometer, nitrogen inlet tube, stirring blade, and condenser, 200 g (1.47 mol) of pentaerythritol and 2020.7 g (6.05 mol) of fatty acid FA-2 were added and reacted at 240 °C under a nitrogen stream. The resulting crude ester product was 2202.3 g with an acid value of 8.1 mg KOH / g. To the crude ester product, 900 g of toluene and 500 g of 2-propanol were added, and a 10% by mass potassium hydroxide aqueous solution containing an amount of potassium hydroxide equivalent to 2.0 times the residual acid value of the crude ester product was added. The mixture was stirred at 70°C for 30 minutes. After standing for 30 minutes, the aqueous layer (lower layer) was separated and removed. The mixture was washed with water four times until the pH of the wastewater became neutral. The solvent in the remaining ester layer was removed by distillation under reduced pressure of 1 kPa at 180°C, and the mixture was filtered to obtain 1785.7 g of wax composition W-2.

[0055] <Synthesis Example 3: Synthesis of Wax Composition W-3> Wax composition W-3 was obtained in the same manner as in Synthesis Example 2, except that the amount of fatty acid FA-2 added was changed to 1963.9 g (5.88 mol).

[0056] <Synthesis Example 4: Synthesis of Wax Composition W-4> Wax composition W-4 was obtained in the same manner as in Synthesis Example 1, except that fatty acid FA-3 was used instead of fatty acid FA-1.

[0057] <Synthesis Example 5: Synthesis of Wax Composition W-5> Wax composition W-5 was obtained in the same manner as in Synthesis Example 1, except that fatty acid FA-4 was used instead of fatty acid FA-1.

[0058] <Synthesis Example 6: Synthesis of Wax Composition W-6> Wax composition W-6 was obtained in the same manner as in Synthesis Example 1, except that fatty acid FA-5 was used instead of fatty acid FA-1.

[0059] <Synthesis Example 7: Synthesis of Wax Composition W-7> Wax composition W-7 was obtained in the same manner as in Synthesis Example 2, except that the amount of fatty acid FA-2 used was changed to 2158.0 g (6.46 mol).

[0060] <Synthesis Example 8: Synthesis of Wax Composition W-8> A crude ester product was obtained in the same manner as in Synthesis Example 2. The acid value of the crude product was 8.1 mg KOH / g. This was designated as wax composition W-8.

[0061] <Synthesis Example 9: Synthesis of Wax Composition W-9> Wax composition W-9 was obtained in the same manner as in Synthesis Example 2, except that the amount of fatty acid FA-2 added was changed to 2354.2 g (7.06 mol).

[0062] <Synthesis Example 10: Synthesis of Wax Composition W-10> Wax composition W-10 was obtained in the same manner as in Synthesis Example 2, except that the amount of fatty acid FA-2 used was changed to 1806.8 g (5.41 mol).

[0063] <Synthesis Example 11: Synthesis of Wax Composition W-11> Wax composition W-11 was obtained in the same manner as in Synthesis Example 1, except that fatty acid FA-6 was used instead of fatty acid FA-1.

[0064] <Synthesis Example 12: Synthesis of Wax Composition W-12> Wax composition W-12 was obtained in the same manner as in Synthesis Example 1, except that fatty acid FA-7 was used instead of fatty acid FA-1.

[0065] Wax compositions W-1 to W-10 contained a mixture of esters of linear saturated fatty acids having 14 to 26 carbon atoms and pentaerythritol. The ester mixtures in wax compositions W-1 to W-10 were designated as ester waxes EW-1 to EW-10, respectively. Wax composition W-11 contained a mixture of esters of a straight-chain saturated fatty acid having 12 to 14 carbon atoms and pentaerythritol. The ester mixture in wax composition W-11 was designated as ester wax EW-11. Wax composition W-12 contained a mixture of esters of a straight-chain saturated fatty acid having 28 to 30 carbon atoms and pentaerythritol. The ester mixture in wax composition W-12 was designated as ester wax EW-12.

[0066] Furthermore, in each of the wax compositions W-1 to W-12, compounds different from the esters of the raw material fatty acid and pentaerythritol were designated as components X-1 to X-12. When the content of components X-1 to X-12 is expressed as an integer value rounded to the first decimal place, the content of components X-1 to X-7 and X-9 to X-12 in wax compositions W-1 to W-7 and W-9 to W-12 is all 0% by mass, and the content of component X-8 in wax composition W-8 is 5% by mass. Note that wax composition W-8 contained C20 linear saturated fatty acids and C22 linear saturated fatty acids contained in the raw material fatty acid FA-2 in amounts of 1% by mass and 4% by mass, respectively.

[0067] Table 2 shows the raw material fatty acids used in the synthesis of wax composition W, the numbers of the ester waxes EW contained in wax composition W, and their content P. EW (by mass%), and the number of component X contained in the wax composition W and its content P. X (Indicates mass %). Note that P EW and P X These values ​​represent the content of ester wax EW and component X, respectively, when the mass of wax composition W is taken as 100% by mass. Table 2 also shows the mass ratio (TE:PE) of tetraester TE and partial ester PE that constitute the ester wax EW.

[0068] Table 3 shows the composition of tetraester TE and partial ester PE contained in each of the ester waxes EW-1 to EW-12. For tetraester TE, A The content, i.e., the highest content tetraester TE when the total amount of tetraester TE is taken as 100% by mass. A The content (mass%) of each component is shown. For partially ester PE, the content (mass%) of monoester, diester, and triester is shown when the total amount of partially ester PE is taken as 100% by mass. Furthermore, TE has the highest content. A The content of each tetraester TE was determined by calculating the content (mass%) of each tetraester TE when the total content of tetraester TE is set to 100 mass%, based on the ratio of peak areas of the GC chart obtained by gas chromatography (GC) under the above GC conditions and the total content of tetraester TE, and then identifying the maximum amount among them. The respective content of monoesters, diesters, and triesters constituting the partial ester PE was determined by calculating the content (mass%) of each monoester, diester, and triester when the total content of partial ester PE was set to 100 mass%, based on the ratio of peak areas of the GC chart obtained by gas chromatography (GC) under the above GC conditions and the total content of partial ester PE.

[0069] [Table 1]

[0070] [Table 2]

[0071] [Table 3]

[0072] <Preparation of oil-based cosmetics> Oily cosmetic compositions for Examples 1-21 and Comparative Examples 1-15 were prepared using the following model formulations.

[0073] [Model lipstick formulations: Examples 1-12 and Comparative Examples 1-6] Model lipstick samples for the evaluation described below were prepared according to the formulations shown in Table 4. Specifically, component (A) and a wax composition W containing component (B) were melted and mixed at 90°C, and other components (excluding component X) were added and further melted and mixed. After confirming that the system was homogeneous, the resulting molten mixture was poured into a stick-shaped mold, cooled and solidified, and then removed from the mold to prepare lipstick samples for Examples 1 to 12 and Comparative Examples 1 to 6 shown in Table 7. Note that "β" in Table 4 represents the amount of wax composition W added, and wax composition W containing ester wax EW as shown in Table 7 was used. Table 7 shows the number of ester wax EW contained as component (B) in the model sample and its content (β × P). EW This indicates ( / 100).

[0074] [Table 4]

[0075] [Model formulations for cleansing cream: Examples 13-16 and Comparative Examples 7-10] Model samples of cleansing cream were prepared according to the formulations shown in Table 5 for the evaluation described below. Specifically, component (A) and a wax composition W containing component (B) were melted and mixed at 90°C, and other components (excluding component X) were added and further melted and mixed. After confirming that the system was homogeneous, the resulting molten mixture was poured into a cylindrical container and cooled to prepare model samples of cleansing cream for Examples 13-16 and Comparative Examples 7-10 shown in Table 8. Note that "β" in Table 5 represents the amount of wax composition W added, and wax composition W containing ester wax EW as shown in Table 8 was used. Table 8 shows the number of ester wax EW contained as component (B) in the model sample and its content (β × P). EW This indicates ( / 100).

[0076] [Table 5]

[0077] [Model formulations of water-soluble sunscreens: Examples 17-21 and Comparative Examples 11-15] Model samples of W / O type sunscreens for the evaluation described below were prepared according to the formulations shown in Table 6. Specifically, component (A) and a wax composition W containing component (B) were melted and mixed at 90°C, and other components (excluding glycerin, water, and component X) were added and further melted and mixed. After confirming that the system was homogeneous, a mixed solvent of glycerin and water was added dropwise to the system to emulsify it, and the resulting emulsion was poured into a cylindrical container and cooled to prepare model samples of W / O type sunscreens for Examples 17-21 and Comparative Examples 11-15 shown in Table 9. Table 9 shows the amount (α) of hydrogenated polyisobutene added as component (A). "β" in Table 6 represents the amount of wax composition W added, and wax composition W containing ester wax EW as shown in Table 9 was used. Table 9 shows the number and content (β × P) of ester wax EW contained as component (B) in the model sample. EW This indicates ( / 100).

[0078] [Table 6]

[0079] [evaluation] The following evaluations were performed on the model samples obtained above: lipsticks from Examples 1-12 and Comparative Examples 1-6 (Table 7), cleansing creams from Examples 13-16 and Comparative Examples 7-10 (Table 8), and W / O type sunscreens from Examples 17-21 and Comparative Examples 11-15 (Table 9).

[0080] [Evaluation of storage stability] The condition of model samples after one month of static storage in two environments—a low-temperature, low-humidity environment at 4°C and 40% relative humidity, and a high-temperature, high-humidity environment at 40°C and 90% relative humidity—was examined, and storage stability was determined as follows. The results are shown in Tables 7-9. <Judgment criteria> ○: In both low-temperature, low-humidity and high-temperature, high-humidity environments, no oil separation or precipitates were observed in the model sample, and there was no change in appearance. ×: In at least one of the following environments—low temperature and low humidity or high temperature and high humidity—separation of oil or precipitates were observed in the model sample, resulting in a change in appearance.

[0081] [Evaluation of thickness and spreadability during application] Twenty expert panelists evaluated the "thickness" and "spreadability" of model samples after they were left to stand for one week in a low-temperature, low-humidity environment of 4°C and 40% relative humidity, and after they were left to stand for one week in a high-temperature, high-humidity environment of 40°C and 90% relative humidity, respectively, when applied under the same conditions. The "target areas for application" were as follows: <Target of application> Examples 1-12, Comparative Examples 1-6: Lips Examples 13-16, Comparative Examples 7-10: Cheek Examples 17-21, Comparative Examples 11-15: Forearm

[0082] Each panelist assigned a score of 0 to 3 points to the "thickness" of the model sample applied to the above-mentioned coating target, according to the evaluation criteria below. <Thickness Evaluation Criteria> (Rating): (Evaluation result) 3 points: I felt that it was very thick in both environments (low temperature, low humidity and high temperature, high humidity). Two points: In one of two environments—low temperature and low humidity, and high temperature and high humidity—the thickness felt very high, but in the other, the thickness felt only moderate. 1 point: In both environments (low temperature, low humidity and high temperature, high humidity), I felt the thickness was only slightly above average. 0 points: The material felt thin in either a low-temperature, low-humidity environment or a high-temperature, high-humidity environment, or both.

[0083] Furthermore, using the average score of all panelists, the coating thickness of the model samples in low-temperature, low-humidity and high-temperature, high-humidity environments was judged according to the following criteria. Tables 7-9 show the judgment results and the average scores. <Criteria for determining thickness> (Judgment): (Average score) ◎: Exceeding 2.6 ○: 2.3 or more and 2.6 or less △: 2.0 or higher, less than 2.3 ×: Less than 2.0

[0084] Regarding the "spreadability" of the model sample when applied to the above-mentioned target surface, each panelist assigned a score of 0 to 3 points according to the evaluation criteria below. <Evaluation Criteria for Growth and Success> (Rating): (Evaluation result) 3 points: I felt that it performed very well in both environments (low temperature, low humidity and high temperature, high humidity). Two points: I felt that the growth was very good under one of two conditions: low temperature and low humidity, and high temperature and high humidity. However, I felt that the growth was only slightly good under the other condition. 1 point: In both environments (low temperature, low humidity and high temperature, high humidity), the growth was only slightly better than average. 0 points: I felt that the product did not grow well in either a low-temperature, low-humidity environment or a high-temperature, high-humidity environment, or both.

[0085] Furthermore, using the average score of all panelists, the elongation of the model samples during application in low-temperature, low-humidity and high-temperature, high-humidity environments was evaluated according to the following criteria. Tables 7-9 show the evaluation results and the average scores. <Criteria for determining growth> (Judgment): (Average score) ◎: Exceeding 2.6 ○: 2.3 or more and 2.6 or less △: 2.0 or higher, less than 2.3 ×: Less than 2.0

[0086] [Table 7]

[0087] [Table 8]

[0088] [Table 9]

[0089] The model samples of Examples 1 to 21 were oily cosmetic compositions of the present invention, containing component (A), which is at least one liquid oil at 25°C selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils, and component (B), which is an ester wax EW consisting of tetraester TE and partial ester PE in a mass ratio (TE:PE) of 80:20 to 98:2, with a total content of component (A) and component (B) of 15 to 100% by mass, and a mass ratio of component (A) to component (B) of ((A):(B)) of 70:30 to 95:5. The model samples of Examples 1 to 21 exhibited excellent storage stability in both low-temperature, low-humidity and high-temperature, high-humidity environments, and achieved both good thickness and spreadability when applied. On the other hand, the model samples of Comparative Examples 1, 7, and 11 contained ester wax EW-9 with a low content of partial ester PE. The model samples of Comparative Examples 2, 8, and 12 contained ester wax EW-10 with a high content of partial ester PE. The model samples of Comparative Examples 3 and 9 contained ester wax EW-11, which consists of an ester of a linear saturated fatty acid with 12 to 14 carbon atoms and pentaerythritol. The model samples of Comparative Examples 4 and 13 contained ester wax EW-12, which consists of an ester of a linear saturated fatty acid with 28 to 30 carbon atoms and pentaerythritol. The model samples of Comparative Examples 5 and 10 had a large mass ratio of component (A). The model samples of Comparative Examples 6 and 15 had a large mass ratio of component (B). The model sample of Comparative Example 14 had a small total content of component (A) and component (B). The model samples in these comparative examples were inferior to the model samples of Examples 1 to 21 in at least one of the following aspects: storage stability, coating thickness, and elongation during application, both in low-temperature, low-humidity and high-temperature, high-humidity environments.

[0090] Next, Tables 10 to 15 show model formulations of oil-based cosmetic products according to the present invention, including liquid foundation, balm formulation, stick formulation, water-in-oil cream formulation, eyeshadow, and solid perfume, respectively.

[0091] Model samples of the formulations shown in Tables 10 to 15 were prepared by melting and mixing component (A) and wax composition W-2, adding other components (excluding the solvent if present) and melting and mixing them further until homogeneity was confirmed in the system. If a solvent was to be added, the solvent was added dropwise into the system, and the resulting molten mixture or emulsion was poured into a container and cooled.

[0092] The oil-based cosmetic formulations shown in Tables 10 to 15 also exhibited excellent storage stability in both low-temperature, low-humidity and high-temperature, high-humidity environments, while also achieving a balance between thickness and spreadability when applied.

[0093] [Table 10]

[0094] Table 11

[0095] Table 12

[0096] Table 13

[0097] Table 14

[0098] Table 15

Claims

1. This is an oily cosmetic containing the following ingredients (A) and (B): An oily cosmetic characterized in that, in 100% by mass of the oily cosmetic, the total content of component (A) and component (B) is 15 to 100% by mass, and the mass ratio of component (A) to component (B) is ((A):(B)) is 70:30 to 95:

5. Component (A): At least one oil selected from the group consisting of hydrocarbon oils, ester oils, and silicone oils that is liquid at 25°C. Component (B): Ester wax EW, comprising a tetraester TE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, and a partial ester PE of a linear saturated fatty acid having 14 to 26 carbon atoms and pentaerythritol, wherein the mass ratio (TE:PE) of the tetraester TE to the partial ester PE is 80:20 to 98:2.

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