Oil-based cleansing cosmetics

Abstract

To provide an oily cleansing cosmetic which exhibits an effect extremely excellent in formulation stability and in particular, to provide an oily cleansing cosmetic having formulation stability that can withstand use in a tube container.SOLUTION: There is provided an oily cleansing cosmetic which comprises a component A: a wax which is solid at room temperature and / or a hydrocarbon oil which is solid at room temperature, a component B: an ester oil which is liquid at room temperature and a component C: an organic modified clay mineral and preferably further comprises a component D: a hydrolyzed jojoba ester.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-based cleansing cosmetic.

Background Art

[0002] Cleansing cosmetics for removing makeup stains and sebum stains are roughly classified into water-based cleansing cosmetics called water cleansing and oil-based cleansing cosmetics called oil cleansing. Among cleansing cosmetics, oil-based cleansing cosmetics contain a large amount of oil agents, so they blend well with makeup stains and can exhibit excellent cleansing power. On the other hand, they have the drawback that the skin after cleansing remains sticky with the characteristic of oil and has a poor feeling of use. However, it can be said that oil-based cleansing cosmetics are attractive products for people who want to thoroughly remove makeup stains.

[0003] In recent years, as a form of oil-based cleansing cosmetics, semi-solid to solid cleansing cosmetics called cleansing balms have attracted attention. Cleansing balms have the characteristic that they blend very well with makeup stains and can exhibit an extremely excellent cleansing effect. In addition, the solidified oil agent becomes soft on the skin during use, and a unique feeling of use like melting can be obtained. Such functions and feelings of use are the reasons for their popularity. Therefore, in recent years, the development of these semi-solid cleansing cosmetics has been actively carried out.

[0004] Specifically, proposed examples include oily solid cleansing materials containing a solid oil, a liquid oil, and a nonionic surfactant having a specific melting point (see, for example, Patent Document 1); solid oily cleansing cosmetics containing a specific amount of hydrocarbon oil having a specific melting point, a specific amount of ester oil, and a specific amount of nonionic surfactant having a specific HLB value (see, for example, Patent Document 2); and oily solid cleansing cosmetics containing a specific amount of solid oil having a specific melting point, a specific amount of liquid oil, a specific amount of nonionic surfactant having a specific HLB value, a specific amount of powder with a specific particle size, and a specific amount of fuzzy silica (see, for example, Patent Document 3).

[0005] However, because balms are semi-solid to solid in consistency, they are often packaged in jars with wide openings. This presents a challenge: the process of opening the lid and using a fingertip to dispense the contents each time is cumbersome. Therefore, the idea of ​​packaging cleansing balms in convenient tube containers is conceivable. However, the squeezing action inherent in tube containers can put excessive pressure on the contents, significantly degrading the stability of the balm formulation. Thus, when adopting tube containers, ingenuity is essential to ensure the stability of the formulation and to avoid negatively impacting the balm's characteristic melting texture. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2001-213726 [Patent Document 2] Japanese Patent Publication No. 2012-206974 [Patent Document 3] Japanese Patent Publication No. 2020-026420 [Overview of the project] [Problems that the invention aims to solve]

[0007] This invention has been made in view of the above-mentioned prior art. That is, regarding the stability of the formulation grid The objective is to provide an oil-based cleansing cosmetic that exhibits excellent efficacy in stages. In particular, the objective is to provide an oil-based cleansing cosmetic that has formulation stability that can withstand use in tube containers. [Means for solving the problem]

[0008] In other words, the present invention provides an oily cleansing cosmetic composition characterized by containing the following components A, B, and C. Component A: A wax and / or hydrocarbon oil that is solid at room temperature. Component B: Ester oil that is liquid at room temperature Component C: Organically modified clay mineral

[0009] It is preferable that component B is at least two selected from a monoester oil that is liquid at room temperature, a diester oil that is liquid at room temperature, and a triester oil that is liquid at room temperature.

[0010] It is preferable that component C is dimethyldistearylammonium bentonite and / or dimethyldistearylammonium hectorite.

[0011] Furthermore, the above-mentioned oil-based cleansing cosmetic composition preferably contains the following ingredient D. Ingredient D: Hydrolyzed jojoba esters

[0012] Furthermore, the above-mentioned oil-based cleansing cosmetic composition preferably contains the following ingredient E. Ingredient E: Metallic soap

[0013] It is preferable that the above component E is magnesium stearate.

[0014] Furthermore, the above-mentioned oil-based cleansing cosmetic composition preferably contains the following ingredient F. Ingredient F: Nonionic surfactant

[0015] The above-mentioned oil-based cleansing cosmetic is preferably semi-solid in form.

[0016] The above-mentioned oil-based cleansing cosmetic is preferably filled in a tube container.

Advantages of the Invention

[0017] By satisfying the above-mentioned constituent requirements, the oil-based cleansing cosmetic of the present invention grid has excellent formulation stability. In particular, the stability of this formulation is also exhibited when filled in a tube container, and it can withstand excessive pressure caused by the usage act of squeezing out from the tube as well.

[0018] In addition, the oil-based cleansing cosmetic of the present invention, regardless of the container form grid has excellent formulation stability, so that a unique feeling of use like melting during spreading, which is peculiar to the balm type, can be obtained, and an extremely excellent cleansing effect (dirt-removing effect) can be exerted.

Modes for Carrying Out the Invention

[0019] The oil-based cleansing cosmetic of the present invention contains Component A: wax solid at room temperature and / or hydrocarbon oil solid at room temperature, Component B: ester oil liquid at room temperature, and Component C: organically modified clay mineral.

[0020] Hereinafter, the details of each component used in the oil-based cleansing cosmetic of the present invention will be described.

[0021] [Component A] Component A above is a wax that is solid at room temperature and / or a hydrocarbon oil that is solid at room temperature. That is, component A above is one or both of a wax that is solid at room temperature and a hydrocarbon oil that is solid at room temperature. In the present invention, by using component A above, it becomes possible to prepare an oily cleansing cosmetic excellent in formulation stability. Further, by combining it with component B described later, a unique feeling of use such as melting during spreading peculiar to the balm type can be obtained, the compatibility with sebum dirt and makeup dirt is improved, and an extremely excellent cleansing effect can be exhibited.

[0022] In addition, in this specification, "solid at room temperature" means a property having no fluidity in the temperature range of 1 to 30°C. Further, in this specification, the wax that is solid at room temperature may be referred to as "component A1", and the hydrocarbon oil that is solid at room temperature may be referred to as "component A2".

[0023] Specific examples of component A1 include, for example, carnauba wax, candelilla wax, beeswax, rice bran wax, shellac wax, whale wax, lanolin, and the like. These component A1s may be used alone or in appropriate combinations of two or more.

[0024] Specific examples of component A2 include, for example, ceresin, paraffin wax, Fischer-Tropsch wax (synthetic wax), microcrystalline wax, polyethylene wax, polyethylene powder, petrolatum, and the like. These component A2s may be used alone or in appropriate combinations of two or more.

[0025] Among the above component A, from the viewpoints of imparting formulation stability, exhibiting a unique feeling of use during spreading, and improving the compatibility with dirt such as makeup, it is preferable to use at least component A2. In the present invention, among these component A2s, it is more preferable to use Fischer-Tropsch wax (synthetic wax), polyethylene wax, and polyethylene powder, and it is most preferable to use Fischer-Tropsch wax (synthetic wax).

[0026] In this invention, component A can be a commercially available product. The commercially available component A is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effect is achieved.

[0027] The content of component A in the oily cleansing cosmetic of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of providing formulation stability, as well as from the viewpoint of the feel when applied and compatibility with dirt, it is generally preferable that the content be 4% by mass or more, and more preferably 5% by mass or more, of 100% by mass of the cosmetic. Furthermore, from the viewpoint of preventing the formulation from becoming too hard, it is preferable that the content be 9% by mass or less, and more preferably 8% by mass or less, of 100% by mass of the cosmetic. Note that the content of component A above is the amount converted to pure content.

[0028] [Component B] The above component B is an ester oil that is liquid at room temperature. In this invention, by using the above component B, it is possible to improve compatibility with sebum and makeup residue and exhibit an excellent cleansing effect. In this specification, "liquid at room temperature" means a state in which it is fluid in the temperature range of 1 to 30°C. Furthermore, the ester oil of component B refers to one that does not include component D, which will be described later.

[0029] In the present invention, from the viewpoint of fully exhibiting the cleansing effect, it is more preferable to use at least two types of ester oils that are liquid at room temperature, selected from monoester oils that are liquid at room temperature, diester oils that are liquid at room temperature, and triester oils that are liquid at room temperature. In particular, from the viewpoint of exhibiting a unique melting sensation when spread and providing an exceptionally superior cleansing effect, it is most preferable to include all of monoester oils that are liquid at room temperature, diester oils that are liquid at room temperature, and triester oils that are liquid at room temperature.

[0030] In this specification, the monoester oil that is liquid at room temperature may be referred to as "component B1," the diester oil that is liquid at room temperature may be referred to as "component B2," and the triester oil that is liquid at room temperature may be referred to as "component B3."

[0031] Specific component B1 includes, for example, monoester oils of linear fatty acids and lower alcohols such as isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl oleate, ethyl linoleate, and isopropyl linoleate; monoester oils of linear fatty acids and linear higher alcohols such as cetyl caprylate, hexyl laurate, decyl myristate, decyl oleate, and oleyl oleate; propylheptyl caprylate, isostearyl laurate, isotridecyl myristate, isocetyl myristate, isostearyl myristate, octyldodecyl myristate, 2-ethylhexyl palmitate, isocetyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, st Examples include monoester oils of straight-chain fatty acids and branched alcohols such as isocetyl oleate, isodecyl oleate, octyldodecyl oleate, and octyldodecyl ricinoleate; monoester oils of branched fatty acids and straight-chain higher alcohols such as cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, and hexyl isostearate; and monoester oils of branched fatty acids and branched alcohols such as octyldodecyl neopentanoate, isocetyl octanoate, isostearyl octanoate, octyl isononanoate, hexyldecyl neodecanoate, octyldodecyl neodecanoate, 2-ethylhexyl isopalmitate, isocetyl isostearate, isostearyl isostearate, and octyldodecyl isostearate. These components B1 may be used individually or in combination of two or more as appropriate.

[0032] Specific examples of component B2 include diester oils of fatty acids and polyhydric alcohols such as ethylene glycol dioctanoate, ethylene glycol dioleate, propylene glycol dicaprylate, di(caprylic / capric acid)propylene glycol, propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, and neopentyl glycol dioctanoate; diester oils of dibasic acids such as dioctyl succinate, diisopropyl adipate, diisobutyl adipate, dioctyl adipate, diethyl sebacate, diisopropyl sebacate, and diethylhexyl sebacate; and diester oils of carbonic acid such as dicaprylyl carbonate. These components B2 may be used individually or in combination of two or more as appropriate.

[0033] Specific examples of component B3 include, for example, triester oils of fatty acids and polyhydric alcohols such as glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tri(caprylic / capric acid), glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, and trimethylolpropane triisostearate. These components B3 may be used individually or in appropriate combinations of two or more.

[0034] In this invention, component B can be a commercially available product. The commercially available product of component B is not particularly limited, as long as the desired effect is achieved, whether as a single raw material or a mixed raw material with other components.

[0035] The content of component B in the oily cleansing cosmetic of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of improving compatibility with sebum and makeup residue, achieving a remarkably superior cleansing effect, and providing a unique feel when spread, it is preferably 45% by mass or more, and more preferably 50% by mass or more, of 100% by mass of the cosmetic. Furthermore, from the viewpoint of suppressing a decrease in formulation stability and deterioration of the feel due to the formulation becoming too soft, it is preferably 85% by mass or less, and more preferably 80% by mass or less, of 100% by mass of the cosmetic. Note that the above content of component B is the amount converted to pure content.

[0036] In the present invention, from the viewpoint of further enhancing the cleansing effect, it is preferable that the mass ratio of the amount of component B1 to the total amount of component B (amount of component B1 / total amount of component B) is prepared to satisfy the range of 0.45 to 0.9, more preferably in the range of 0.5 to 0.85, and most preferably in the range of 0.55 to 0.8.

[0037] Furthermore, from the viewpoint of further enhancing compatibility with sebum and makeup residue, it is preferable that the mass ratio of the amount of component B2 to the total amount of component B (amount of component B2 / total amount of component B) is within the range of 0.04 to 0.25, more preferably within the range of 0.06 to 0.2, and most preferably within the range of 0.08 to 0.18.

[0038] Furthermore, from the viewpoint of further enhancing the unique melting texture and thick feel when spread, it is preferable that the mass ratio of the amount of component B3 to the total amount of component B (amount of component B3 / total amount of component B) is within the range of 0.1 to 0.3, more preferably within the range of 0.12 to 0.27, and most preferably within the range of 0.14 to 0.25.

[0039] In the present invention, in order to exhibit excellent effects, it is sufficient to prepare the product by satisfying any of the mass ratios of the amounts of each ester oil (component B1, component B2, component B3) to the total amount of component B described above. However, from the viewpoint of further enhancing the unique effects of the present invention during spreading, it is more preferable to prepare the product by satisfying all of the mass ratios of the amounts of each ester oil (component B1, component B2, component B3) to the total amount of component B.

[0040] In addition, in the present invention, from the viewpoint of exhibiting exceptionally superior formulation stability, fully exhibiting a unique feel when spread, significantly improving compatibility with sebum and makeup residue, and fully exhibiting excellent cleansing effects, it is preferable that the ratio of the content of component B to component A (component B / component A) is within the range of 5 to 25, more preferably within the range of 6 to 20, and most preferably within the range of 7 to 15.

[0041] If the ratio of the above-mentioned components (component B / component A) is less than 5, the formulation becomes too hard, making it difficult to remove from a jar container. It also becomes difficult to dispense from a tube container. Furthermore, it blends poorly with sebum and makeup, resulting in a less pleasant cleansing experience. On the other hand, if the ratio of the above-mentioned components (component B / component A) is greater than 25, the formulation becomes too soft, making it difficult to achieve the unique melting texture when spread, resulting in a less desirable user experience.

[0042] [Component C] The above-mentioned component C is an organically modified clay mineral. In this invention, by using the above-mentioned component C, good formulation stability can be imparted to the oily cleansing cosmetic composition of the present invention. This formulation stability can be fully exhibited not only when filled in a jar container, but also when filled in a tube container.

[0043] Examples of component C include smectite group clay minerals such as bentonite, montmorillonite, byderite, nontonite, saponite, hectorite, and lucentite, and vermiculite group clay minerals such as vermiculite, which have been treated with quaternary ammonium salt type cationic surfactants such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, and benzalkonium chloride. These components C may be used individually or in appropriate combinations of two or more.

[0044] More specific examples of component C include dimethyldistearylammonium bentonite, dimethyldistearylammonium hectorite, and benzyldimethylstearylammonium hectorite. In the present invention, from the viewpoint of providing better formulation stability, it is preferable to use dimethyldistearylammonium bentonite and dimethyldistearylammonium hectorite, and it is even more preferable to use dimethyldistearylammonium bentonite and dimethyldistearylammonium hectorite in combination.

[0045] In this invention, component C can be a commercially available product. The commercially available product of component C is not particularly limited, as long as the desired effect is achieved, whether as a single raw material or a mixed raw material with other components.

[0046] The content of component C in the oily cleansing cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of providing formulation stability, it is generally preferable to have 1% by mass or more, and more preferably 1.5% by mass or more, per 100% by mass of the cosmetic composition. Furthermore, from the viewpoint of suppressing a decrease in formulation stability and deterioration of the feel of use, it is preferable to have 5% by mass or less, and more preferably 4% by mass or less, per 100% by mass of the cosmetic composition. Note that the above content of component C is the amount converted to pure content.

[0047] [Component D] The oil-based cleansing cosmetic composition of the present invention preferably further contains hydrolyzed jojoba ester as component D. By using component D, the stability of the formulation can be further enhanced. In the oil-based cleansing cosmetic composition of the present invention, by using component D and component C in combination... grid This makes it possible to achieve excellent formulation stability in stages.

[0048] The hydrolyzed jojoba ester, which is component D mentioned above, is obtained by hydrolyzing jojoba ester, a mixed ester obtained by transesterification of jojoba seed oil and hydrogenated jojoba oil, using acid, enzymes, or other methods. In this invention, a commercially available product can be used for component D. The commercially available product of component D is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effect is achieved.

[0049] The content of component D in the oily cleansing cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of further improving formulation stability, it is generally preferable that the content be 0.1% by mass or more, and more preferably 0.5% by mass or more, of 100% by mass of the cosmetic composition. Furthermore, from the viewpoint of suppressing deterioration of the feel of use, it is preferable that the content be 2% by mass or less, and more preferably 1.5% by mass or less, of 100% by mass of the cosmetic composition. Note that the above content of component D is the amount converted to pure content.

[0050] [Component E] The oil-based cleansing cosmetic composition of the present invention preferably further contains a metal soap as component E. By using component E, the formulation stability can be further enhanced. In the oil-based cleansing cosmetic composition of the present invention, particularly outstanding formulation stability can be achieved by using component E, component C, and component D in combination.

[0051] The above-mentioned component E, a metal soap, is a general term for substances consisting of long-chain fatty acids and metal salts other than sodium and potassium. Examples of long-chain fatty acids include saturated or unsaturated fatty acids with 8 to 18 carbon atoms. In this invention, however, there are no particular limitations on whether the fatty acid is straight-chain or branched, as long as the desired effect is sufficiently achieved. Similarly, there are no particular limitations on whether the fatty acid is single-chain or multi-chain, as long as the desired effect is sufficiently achieved. Examples of metal salts include lithium, magnesium, calcium, barium, and zinc.

[0052] Specific examples of component E include zinc octoate, calcium laurate, barium laurate, zinc laurate, lithium stearate, magnesium stearate, calcium stearate, barium stearate, zinc stearate, calcium ricinoleate, barium ricinoleate, and zinc ricinoleate. These components E may be used individually or in combination of two or more as appropriate.

[0053] Among the above-mentioned components E, it is preferable to use a metal stearate salt from the viewpoint of further enhancing formulation stability. Among these preferred components, it is most preferable to use magnesium stearate from the viewpoint of exhibiting particularly outstanding formulation stability.

[0054] In this invention, component E can be a commercially available product. The commercially available product of component E is not particularly limited, as long as the desired effect is achieved, whether it is a single raw material or a mixed raw material with other components.

[0055] The content of component E in the oily cleansing cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of further enhancing formulation stability, it is generally preferable that the content be 0.1% by mass or more, and more preferably 0.5% by mass or more, of 100% by mass of the cosmetic composition. Furthermore, from the viewpoint of suppressing deterioration of the feel of use, it is preferable that the content be 3% by mass or less, and more preferably 2% by mass or less, of 100% by mass of the cosmetic composition. Note that the above content of component E is the amount converted to pure content.

[0056] [Component F] The oil-based cleansing cosmetic of the present invention preferably further contains a nonionic surfactant as component F. By using component F, not only is the stability of the formulation improved, but the oil-based cleansing cosmetic can be easily washed off, preventing the characteristic sticky feeling from remaining on the skin after cleansing. In addition, the cleansing effect can be further enhanced.

[0057] Examples of component F include glycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene fatty acids, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and polyoxyethylene hydrogenated castor oil.

[0058] The HLB value of component F is not particularly limited as long as the desired effect is sufficiently achieved, but from the viewpoint of improving washability, it is preferably 2 to 20, and more preferably 2 to 16. These components F may be used individually, or two or more may be used in appropriate combinations.

[0059] Among the above-mentioned components F, it is preferable to use glycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyglycerin fatty acid ester, and polyoxyethylene sorbitan fatty acid ester from the viewpoint of improving formulation stability, further enhancing the cleansing effect, and further improving the ability to wash off after cleansing, and it is more preferable to use polyoxyethylene glycerin fatty acid ester, polyglycerin fatty acid ester, and polyoxyethylene sorbitan fatty acid ester.

[0060] In this specification, the above polyoxyethylene glycerol fatty acid ester may be referred to as "component F1," the above polyglycerol fatty acid ester as "component F2," and the above polyoxyethylene sorbitan fatty acid ester as "component F3."

[0061] The fatty acids constituting components F1, F2, and F3 described above are not particularly limited, whether saturated fatty acids, unsaturated fatty acids, or condensates (polymers) of these fatty acids, as long as the desired effect is sufficiently achieved. Furthermore, the fatty acids are not particularly limited, whether straight-chain fatty acids or branched fatty acids, as long as the desired effect is sufficiently achieved. In addition, the fatty acids are not particularly limited, whether single-chain or polychain, as long as the desired effect is sufficiently achieved.

[0062] Suitable components F1 include, for example, polyoxyethylene (caprylic / capric acid) glyceryl, polyoxyethylene glyceryl laurate, polyoxyethylene glyceryl stearate, polyoxyethylene glyceryl oleate, polyoxyethylene glyceryl coconut oil fatty acid, polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl distearate, polyoxyethylene glyceryl tristearate, polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl trioleate, and polyoxyethylene glyceryl triisostearate. These suitable components F1 may be used individually or in combination of two or more as appropriate.

[0063] The average number of moles of ethylene oxide added to component F1 is not particularly limited as long as the desired effect is sufficiently achieved, but it is preferably 2 to 60, and more preferably 2 to 40. When the average number of moles of ethylene oxide added to component F1 is within the above range, the cleansing effect of the oily cleansing cosmetic composition of the present invention can be enhanced, and the wash-off after cleansing can be improved.

[0064] Suitable components F2 include, for example, polyglyceryl caprate, polyglyceryl laurate, polyglyceryl myristate, polyglyceryl palmitate, polyglyceryl stearate, polyglyceryl oleate, polyglyceryl isostearate, polyglyceryl dicaprate, polyglyceryl dimyristate, polyglyceryl distearate, polyglyceryl dioleate, polyglyceryl diisostearate, polyglyceryl trimyristate, polyglyceryl tristearate, polyglyceryl trioleate, polyglyceryl triisostearate, polyglyceryl tetralaurate, polyglyceryl tetraisostearate, and polyglyceryl decaisostearate. These suitable components F2 may be used individually or in combination of two or more as appropriate.

[0065] The average degree of polymerization of polyglycerin in component F2 is not particularly limited as long as the desired effect is sufficiently achieved, but it is preferably 2 to 12, and more preferably 2 to 10. When the average degree of polymerization of polyglycerin in component F2 is within the above range, it is possible to enhance the cleansing effect of the oily cleansing cosmetic composition of the present invention, improve the ease of washing off after cleansing, and also enhance the stability of the formulation.

[0066] Suitable components F3 include, for example, polyoxyethylene sorbitan laurate, polyoxyethylene sorbitan stearate, polyoxyethylene sorbitan oleate, polyoxyethylene sorbitan isostearate, polyoxyethylene sorbitan coconut oil fatty acid, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan triisostearate, and polyoxyethylene sorbitan tetraoleate. These suitable components F3 may be used individually or in combination of two or more as appropriate.

[0067] The average number of moles of ethylene oxide added to component F3 is not particularly limited as long as the desired effect is sufficiently achieved, but it is preferably 2 to 60, and more preferably 2 to 40. When the average number of moles of ethylene oxide added to component F3 is within the above range, the cleansing effect of the oily cleansing cosmetic composition of the present invention can be enhanced, and the wash-off after cleansing can be improved.

[0068] In this invention, component F can be a commercially available product. The commercially available product of component F is not particularly limited, as long as the desired effect is achieved, whether as a single raw material or a mixed raw material with other components.

[0069] The content of component F in the oily cleansing cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently achieved. However, from the viewpoint of improving formulation stability, improving cleansing effect, and improving washability after cleansing, it is generally preferable that the content be 7% by mass or more, and more preferably 10% by mass or more, of 100% by mass of the cosmetic composition. Furthermore, from the viewpoint of formulation stability, it is preferable that the content be 25% by mass or less, and more preferably 20% by mass or less, of 100% by mass of the cosmetic composition. Note that the above content of component F is the amount converted to pure content.

[0070] [Other ingredients] In addition to the above-mentioned components, the oily cleansing cosmetic composition of the present invention may appropriately incorporate solid or liquid oils at room temperature, as long as they do not impair the effects of the present invention. Examples of oils that can be incorporated other than components A and B include higher fatty acids, higher alcohols, silicone oils, vegetable oils, and hydrocarbons. Furthermore, in addition to these components, surfactants other than component F, such as anionic surfactants, cationic surfactants, and amphoteric surfactants; polyhydric alcohols, thickening polymers, film-forming agents, UV absorbers, preservatives, whitening agents, anti-inflammatory agents, cooling agents, vegetable oils, plant extracts, plant fermentation extracts, pH adjusters, neutralizing agents, and fragrances may be appropriately incorporated depending on the purpose and application.

[0071] From the viewpoint of being oily, the oily cleansing cosmetic composition of the present invention preferably contains no water, or contains water, with the water content being 5% by mass or less per 100% by mass of the cosmetic composition. That is, the water content in the oily cleansing cosmetic composition of the present invention is preferably 0 to 5% by mass, and more preferably 0 to 4% by mass.

[0072] The method for producing the oily cleansing cosmetic composition of the present invention is not particularly limited, but can be produced by known methods, for example. Specifically, examples include mixing the above-mentioned components and stirring them using a disper mixer, homomixer, disper mill, etc., but the present invention is not limited to these production methods.

[0073] The oil-based cleansing cosmetic of the present invention is preferably prepared in a semi-solid form, a so-called cleansing balm, in which the solidified oil softens on the skin upon use, providing a unique melting sensation. In this specification, "semi-solid form" means a solid dosage form that is not fluid and deforms under stress such as pressure from a finger. Furthermore, "not fluid" means a state in which the cosmetic does not drip out of a wide-mouthed container when the container is tilted at a 45-degree angle for 30 seconds.

[0074] Furthermore, the oil-based cleansing cosmetic composition of the present invention satisfies the above configuration. grid Because it possesses excellent formulation stability, it can be filled not only in jar containers, which are commonly used for cleansing balms, but also in tube containers. In particular, the oil-based cleansing cosmetic of the present invention has formulation stability that can withstand excessive pressure from the act of squeezing it out of a tube, making it most preferable to fill it in a tube container. The oil-based cleansing cosmetic of the present invention can take the form of cosmetics, quasi-drugs, designated quasi-drugs, general merchandise, etc. [Examples]

[0075] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. Unless otherwise specified, the amounts are expressed in "mass percent," and all ingredient amounts in the table are converted to pure content. Furthermore, all evaluations were conducted under constant temperature conditions (25±2℃).

[0076] The following components were used in the examples and comparative examples.

[0077] [Component A] Ingredient A1) Beeswax: Product name "Refined Beeswax CY-100" (manufactured by Yokozeki Oil & Fat Industry Co., Ltd.) Ingredient A2) Fischer-Tropschwax: Product name "Sasolwax C80" (manufactured by Sasol)

[0078] [Component B] Ingredient B1) 2-ethylhexyl palmitate: Product name "Koyo POC" (manufactured by Koyo Fine Chemical Co., Ltd.) Ingredient B1) Isopropyl palmitate: Product name "SR CRODAMOL IPP-LQ-(JP)" (manufactured by Croda Japan Co., Ltd.) Ingredient B2) Diethylhexyl sebacate: Product name "FineNeo-EHS" (manufactured by Nippon Seika Co., Ltd.) Ingredient B2) Dicaprylyl Carbonate: Product name "CETIOL CC" (manufactured by BASF Japan) Ingredient B3) Caprylic / Capric Triglyceride: Product name "MIGLYOL 812N(F)" (manufactured by IOI Oleo GmbH)

[0079] [Component C] Dimethyldistearylammonium bentonite (Quaternium-18 bentonite): Product name "Moistnight WO" (manufactured by Kunimine Industries Co., Ltd.) Dimethyldistearylammonium hectorite (quaternium-18 hectorite): Product name "Smecton-SAN-P" (manufactured by Kunimine Industries Co., Ltd.)

[0080] [Component D] Hydrolyzed jojoba esters: Product name "FLORAESTERS K-20W JOJOBA" (manufactured by Floratech)

[0081] [Component E] Magnesium stearate (Mg stearate): Product name "Magnesium Stearate-S" (manufactured by NOF Corporation)

[0082] [Component F] Ingredient F1) PEG-20 Glyceryl Isostearate: Product name "M Fine Oil ISG-20M" (manufactured by Miyoshi Oil & Fat Co., Ltd.) Ingredient F1) PEG-5 Glyceryl Triisostearate: Product name "EMALEX GWIS-305" (manufactured by Nippon Emulsion Co., Ltd.) Ingredient F1) PEG-20 Glyceryl Triisostearate: Product name "M Fine Oil ISG-20T" (manufactured by Miyoshi Oil & Fat Co., Ltd.) Ingredient F2) Polyglyceryl-2 Triisostearate: Product name "Cossmall 43V" (manufactured by Nisshin Oillio Co., Ltd.) Ingredient F2) Polyglyceryl-2 Tetraisostearate: Product name "Cossmall 44V" (manufactured by Nisshin Oillio Co., Ltd.) Ingredient F2) Polyglyceryl-10 Decaisostearate: Product name "Sun Oil DDI" (manufactured by Taiyo Kagaku Co., Ltd.) Ingredient F3) Sorbeth-30 Tetraoleate: Product name "Leodol 430V" (manufactured by Kao Corporation)

[0083] (Sample preparation 1) Cosmetics for Examples 1-8 and Comparative Examples 1-6 were prepared according to conventional methods, based on the compositions listed in Tables 1 and 2, and subjected to the following evaluation. The results are shown in Tables 1 and 2.

[0084] (Test Example 1: Evaluation of Formulation Stability 1) Each sample obtained in the examples and comparative examples was filled into a 90g capacity jar container (wide-mouth container) and stored in a constant temperature bath at 40°C for one week. The state of the agent after storage was visually observed and evaluated according to the evaluation criteria below. The evaluation was carried out by five expert evaluators, and the final decision was made by combining the evaluations of each evaluator.

[0085] <Evaluation Criteria for Product Stability Assessment 1> ○ (Good): Maintains a uniform condition compared to immediately after manufacturing (no changes observed). △ (Insufficient): Compared to immediately after manufacturing, a uniform state is maintained, but slight separation of liquid is observed. × (Defective): Compared to immediately after manufacturing, it does not maintain a uniform state, obvious liquid separation is observed, or it does not become semi-solid.

[0086] (Test Example 2: Evaluation of Formulation Stability 2) Each sample obtained in the examples and comparative examples was filled into a 120g capacity PP tube container and stored in a constant temperature bath at 40°C. Subsequently, a dispensing test was performed by squeezing out 3g from the tube container at 1 day, 4 days, and 7 days after storage. The state of the dispensed agent at 7 days was visually observed and evaluated according to the evaluation criteria below. The evaluation was carried out by five expert evaluators, and the final decision was made by combining the evaluations of each evaluator.

[0087] <Evaluation Criteria for Formulation Stability Evaluation 2> ○ (Good): Maintains a uniform state during dispensing, similar to the properties immediately after manufacturing (no change observed). △ (Insufficient): During dispensing, a uniform state is maintained compared to the state immediately after manufacturing, but slight separation of liquid is observed on the surface. × (Defective): During dispensing, the product does not maintain a uniform state compared to its state immediately after manufacturing, clear separation of liquid is observed, or it does not become semi-solid, or it cannot be dispensed.

[0088] In the evaluation of formulation stability 2 of the above Test Example 2, each sample that received a result of "○ (good)" or "△ (insufficient)" was subjected to the following tests.

[0089] (Test Example 3: Evaluation of usability during extended use) Each sample (1g) was dispensed onto the back of a hand stained with lipstick, and then spread in small circular motions with the fingertips. The "changes in the agent's texture" and "how well it blended with makeup stains" were evaluated sensorily according to the evaluation criteria below. The evaluation was conducted by five expert evaluators, and the final result was determined by combining the evaluations of each evaluator.

[0090] <Evaluation Criteria for User Experience During Extended Use> ○(Good): The semi-solid material melts and crumbles, providing a pleasant user experience. △ (Insufficient): The semi-solid formulation does not melt or crumble easily, resulting in an inferior user experience. × (Poor): The semi-solid agent does not melt or crumble, resulting in an unpleasant texture.

[0091] <Evaluation Criteria for How Well It Blends with Makeup> ○(Good): Easily blends with makeup (dirt) without needing to apply much pressure with your fingers. △ (Insufficient): You need to rub it in with your fingers with a little pressure to blend it with the makeup (dirt). × (Poor): It requires considerable force to rub in order to blend with makeup (dirt).

[0092] (Test Example 4: Evaluation during cleansing) Each sample (3g) was applied to the entire face, which was already made up. Then, the participants cleansed the area with small circular motions using their fingertips, focusing on areas where makeup was a concern, for one minute. After that, they rinsed thoroughly with 40°C warm water and patted their faces dry with a towel.

[0093] The usage tests focused on the "wash-off" of the agent during washing and the "cleansing effect" after towel drying. Sensory evaluations were conducted according to the evaluation criteria below. The evaluations were carried out by five expert evaluators, and the final result was determined by combining the evaluations of each evaluator.

[0094] <Evaluation criteria for washability> ○ (Good): Excellent at washing off △ (Insufficient): Poor washability × (Poorly remembered, poorly washable)

[0095] <Criteria for evaluating cleansing effectiveness> ○ (Good): The cleansing process provides a strong sense that makeup residue has been thoroughly removed. △ (Insufficient): The cleansing process does not provide a sufficient feeling that makeup has been thoroughly removed. × (Poor): The cleansing process does not give the feeling that makeup has been thoroughly removed.

[0096] [Table 1]

[0097] [Table 2]

[0098] The results shown in Tables 1 and 2 demonstrate that the oil-based cleansing cosmetic formulations of the present invention obtained in each example exhibit significantly superior formulation stability compared to those obtained in each comparative example, with no separation or synelution of the formulation. Furthermore, this formulation stability is observed not only when filled into a general jar container but also when filled into a tube container. In other words, the oil-based cleansing cosmetic formulation of the present invention can withstand excessive pressure from the act of squeezing it out of a tube.

[0099] Furthermore, the oil-based cleansing cosmetic of the present invention produces a unique melting texture when spread, blends very well with makeup residue, and exhibits excellent cleansing effects.

[0100] In contrast, Comparative Examples 1 to 6, which do not satisfy the essential components of the present invention, do not fully exhibit the unique effects of the present invention. As is clear from these results, the unique effects of the present invention can only be fully exhibited by satisfying the essential components of the present invention.

Claims

1. Component A: a wax and / or hydrocarbon oil that is solid at room temperature, Component B: Ester oil that is liquid at room temperature, Component C: Organically modified clay mineral and An oily cleansing cosmetic containing, As ester oils that are liquid at room temperature, monoester oils, diester oils, and trieser oils that are liquid at room temperature are used. Dimethyldistearylammonium bentonite and dimethyldistearylammonium hectorite are used as organically modified clay minerals. A semi-solid oil-based cleansing cosmetic characterized in that the content of component A in the oil-based cleansing cosmetic is 4 to 9% by mass.

2. The oily cleansing cosmetic according to Claim 1, further characterized by containing the following component D. Ingredient D: Hydrolyzed jojoba esters

3. Furthermore, the oil-based cleansing cosmetic according to claim 1 or 2, characterized in that it contains the following ingredient E. Ingredient E: Metal soap

4. The oily cleansing cosmetic composition according to claim 3, wherein the component E is magnesium stearate.

5. Furthermore, the oil-based cleansing cosmetic according to any one of claims 1 to 4, characterized in that it contains the following ingredient F. Ingredient F: Nonionic surfactant

6. The oily cleansing cosmetic composition according to any one of claims 1 to 5, characterized in that it is filled into a tube container.

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