JP7845878B2 - Oil-based cosmetics - Google Patents

Description

This invention relates to transparent or translucent oil-based cosmetic compositions.

In recent years, with the spread of social networking services, more people are posting aesthetically pleasing products online. As a result, there is a growing demand for aesthetically pleasing cosmetics, with transparent lipsticks and primers attracting particular attention. Meanwhile, primers have long been in demand as products that correct skin imperfections in order to apply cosmetics more evenly, but in recent years, there has been a demand for added value such as a non-sticky, smooth feel upon application, pore coverage, and improved makeup longevity.
Regarding technologies for achieving transparency in appearance, for example, as described in Patent Document 1, there is a technology for maintaining the transparency of sunscreen containing powder. Normally, when powder is included in a liquid cosmetic, light diffuses at the solid-liquid interface, reducing transparency. However, as described in Patent Document 1, by making the refractive index of the powder and the refractive index of the liquid close, the diffusion of light at the solid-liquid interface can be suppressed and transparency can be maintained.
On the other hand, regarding the effects required for the base, technologies have been proposed to enhance pore coverage by utilizing the light-diffusing effect of spherical powder, as in Patent Document 2, or by utilizing the unevenness-filling effect of waxes or polymer gels, as in Patent Document 3.

Japanese Patent Publication No. 2018-184370 Japanese Patent Publication No. 2002-047138 Japanese Patent Publication No. 2002-080338

However, techniques for maintaining the transparency of cosmetics, such as those described in Patent Document 1, have the problem that even if powder is included, sufficient pore coverage cannot be obtained because they suppress light diffusion in the cosmetic film after application. Furthermore, techniques for enhancing pore coverage by including large amounts of spherical powder or solid oil, as described in Patent Documents 2 and 3, have the problem that light diffusion easily occurs at the liquid-solid interface of the cosmetic before application, making it difficult to maintain the transparency of the appearance, and the high ratio of powder and solid oil in the formed cosmetic film results in an uneven surface, which also reduces the uniformity of the cosmetic applied on top.
Therefore, as mentioned above, there was a need to develop a cosmetic product that, due to its transparency and uniformity, could maintain uniformity even when other cosmetic products were applied on top, while also providing a pore-blurring effect and a smooth, matte finish.

Therefore, the present invention aims to develop an oil-based cosmetic that has a strong smooth feel upon application, high uniformity of the cosmetic, high coverage of the applied film, excellent staying power, high stability, and a transparent or translucent appearance.

In view of the above circumstances, the inventors conducted diligent research and found that the refractive index of the oil changes significantly before and after application when a certain amount of volatile oil is included. They discovered that by including a cross-linked silicone that does not dissolve in the oil in the cosmetic, an oil with a specific refractive index, and a volatile oil in an amount of 30% by mass (hereinafter abbreviated as %) or more relative to the total amount of the cosmetic, it is possible to obtain a cosmetic that forms a cosmetic film with high transparency in appearance, a strong smooth feel when applied, and high coverage after application. However, with the above combination alone, the ability to uniformly apply the cosmetic is reduced because it is difficult to adsorb when a cosmetic is applied on top, and a problem of synergy occurs where the cross-linked silicone and oil separate when stored for a long period of time. Therefore, the inventors searched for materials that would further resolve the above problems. As a result, they found that the stability of the formulation is further improved by including a certain amount of a synergy inhibitor, such as a surfactant with an HLB of 3 to 8, or, for example, fuzzy silica, in addition to the above combination. Furthermore, they found that by including a fluorine-modified silicone resin that is soluble in the oil in the cosmetic, the cosmetic's longevity can be improved in addition to the above effects.
Thus, the inventor has completed the present invention, which is as follows.

[1] The following components (A) to (D);
(A) Cross-linked silicone 6-35% by mass
(B) 30 to 90% by mass of volatile oil with a kinematic viscosity of 2.5 ^mm² /s or less at 25°C
(C) A non-volatile oil with a refractive index of 1.46 to 1.55 at 25°C. (D) A liquid separation inhibitor. The oil-based cosmetic composition is transparent or translucent in appearance.
[2] The oily cosmetic composition described in [1] further contains a fluorine-modified silicone resin as component (E).
[3] The oily cosmetic composition according to [1] or [2], further comprising as component (F) an ester oil having 22 or fewer carbon atoms that is liquid at 25°C, other than components (B), (C), and (D).
[4] The oily cosmetic composition according to any one of the items [1] to [3], wherein component (A) contains one or more selected from those having a continuous silsesquioxane structure and one or more selected from those having a non-continuous silsesquioxane structure.
[5] The oily cosmetic composition according to any one of items [1] to [4], wherein component (A) is one or more selected from polymethylsilsesquioxane, (vinyl dimethicone/methicone silsesquioxane) copolymer, dimethicone crosspolymer, and (dimethicone/vinyl dimethicone) crosspolymer.
[6] The oily cosmetic composition according to any one of items [1] to [5], wherein component (D) is one or more selected from surfactants with an HLB value of 3 to 8 and fuzzy silica.
[7] Furthermore, the oily cosmetic composition according to any one of the items [1] to [6] contains as component (G) one or more selected from glycol ethers and 1,2-alkanediols having 8 to 12 carbon atoms.
[8] An oily cosmetic composition according to any one of the claims [1] to [7], wherein the mass content ratio of component (A) and a non-volatile oil that is liquid at room temperature of 25°C and contains components (C) and (D) is solid content/non-volatile oil ≥ 0.30.
[9] The oily cosmetic is an oily cosmetic described in any one of items [1] to [8] which is a cosmetic for correcting unevenness.
[10] A cosmetic method comprising applying a transparent or translucent oily cosmetic described in any one of the above items [1] to [9] to the skin, evaporating component (B), and providing coverage to the applied film.

Furthermore, this technology can also incorporate the following additional configurations.
[11]
The oily cosmetic composition according to [1] to [9], wherein the refractive index of the liquid containing component (B) at 25°C is 1.39 to 1.43, and the refractive index of the liquid excluding component (B) at 25°C is 1.45 or higher.
[12]
The oily cosmetic composition according to [1] to [9], wherein the ΔE calculated by the following measurement method for the oily cosmetic composition is 6 or more.
Measurement method: The sample is applied to the black portion of the opacity test paper (JIS K5101) to a thickness of 1500 μm using a doctor blade, and then dried at 70°C for 1 hour to prepare an opacity test paper with a decorative film. The L*a*b* values of only the black portion of the opacity test paper (JIS K5101) and the L*a*b* values of the opacity test paper with the coating (black portion) are measured, and the color difference ΔE is calculated.

The transparent or translucent oil-based cosmetic composition of the present invention has a strong smooth feel upon application, provides uniformity to the cosmetic composition, exhibits high coverage of the applied film, and has excellent longevity and stability.

Evaluation Method 1: (a) Transparency of Appearance: Photographs of the appearance of the sample when it is filled into a 10 mm square cell (different backgrounds) (Examples 1, 8, 7, 35, Comparative Example 11)

The configuration of the present invention will be described in detail below. However, the present invention is not limited to the following preferred embodiments and can be freely modified within the scope of the invention. In this specification, percentages are expressed in terms of mass unless otherwise specified. Furthermore, the upper and lower limits of each numerical range can be arbitrarily combined as desired. Also, in this specification, "~" means a range including the values before and after it. Furthermore, in the case of powders, "average particle diameter" refers to the value (median diameter D50) obtained by observing the surface state using a scanning electron microscope (JEOL, JSM-7800prime) and measuring it with an image analysis device (Luzex AP, Nireco), and refers to the major axis of the particle. The refractive index is calculated by measuring with an Abbe refractometer using the critical angle method, by placing the sample between two prisms and changing the angle with respect to the incident light to determine the refractive index (refractive angle).

In this invention, "transparent" refers to a material with a transmittance of 30.0% or more for light with a wavelength of 700 nm, while "translucent" refers to a material with a transmittance of 0.5% to 30.0% for light with a wavelength of 700 nm. The transmittance is measured using a spectrophotometer after filling a quartz cell or plastic cell with a path length of 10 mm and a path width of 10 mm with the sample. The cell material is not particularly limited; the cell material data is subtracted from the blank value.

The cross-linked silicone (A) used in the present invention is a polymer having a continuous silsesquioxane structure obtained by hydrolysis of a trifunctional silane, or a polymer having a dimethicone structure with a three-dimensional cross-linked structure obtained by cross-linking organopolysiloxanes. Furthermore, both exist as solids and do not dissolve in the oil phase of cosmetics.
The "silsesquioxane structure" of component (A) of the present invention refers to a siloxane-based compound whose main chain skeleton consists of Si-O bonds, and which has 1.5 oxygen atoms (1.5 = sesqui) in its unit composition formula, represented by the composition formula [(RSIO _1.5 )n], and is a structure called the T-isomer in which methyltrimethoxysilane is crosslinked. Substances having these structures tend to have a particle shape, and it is preferable that they stably maintain their shape at a certain size, and the shape is not particularly limited, such as spherical, granular, elliptical, or protruding. For example, polymethylsilsesquioxane, in which methyltrimethoxysilane is three-dimensionally crosslinked, can be mentioned. The particle size is not particularly limited, but an average particle diameter of 5 to 30 μm is preferred. In particular, an average particle diameter of 5 to 10 μm is more preferred. Alternatively, these solids may be surface-treated into particles by conventional methods. Within this range, the coated film is preferable because it provides coverage and rolls off the skin without adhering to it, resulting in a smooth feel.

Among the cross-linked silicones used in the present invention, polymers having a continuous silsesquioxane structure include, for example, polymethylsilsesquioxane and (vinyl dimethicone/methicone silsesquioxane) copolymer, and one or more of these can be used.
Furthermore, polymers having a dimethicone structure with a three-dimensional crosslinked structure in which the silsesquioxane structure is not continuous are not particularly limited, but those with low polarity and a structure crosslinked with divinyldimethylpolysiloxane or a structure crosslinked with alkyl groups having 3 to 20 carbon atoms are preferred. For example, (dimethicone/vinyldimethicone) crosspolymers crosslinked with divinyldimethylpolysiloxane and dimethicone crosspolymers having alkyl groups in the crosslinked portion are examples. Moreover, polymers containing polyoxyalkylene groups in the molecule, or polymers containing polyoxyalkylene groups and long-chain alkyl groups in the molecule are not particularly limited. However, polymers with a refractive index of 1.395 to 1.454 at 25°C are preferred, and those with a refractive index of 1.40 to 1.45 as a solid are particularly preferred. They can be deformed at any time during application, and their size and shape are random. These structures are preferred because they conform to the unevenness of the skin and form a cosmetic film that allows for uniform application of cosmetics.
Examples of polymers in which the silsesquioxane structure is not continuous include those crosslinked with divinyldimethylpolysiloxane, such as (dimethicone/vinyldimethicone) crosspolymer, and those crosslinked with C3-C20 alkyl groups, such as dimethicone crosspolymer. Examples of polymers containing polyoxyalkylene groups in the molecule include partially crosslinked polyether-modified silicones such as (dimethicone/(PEG-10/15)) crosspolymer. Examples of polymers containing polyoxyalkylene groups and long-chain alkyl groups in the molecule include partially crosslinked alkyl-polyether copolymerized silicones such as PEG-15 lauryldimethicone crosspolymer. They may be contained as solids alone or as swollen products. In particular, those crosslinked with C3-C20 alkyl groups are more preferable because they have a moderate hardness, a smooth feel, and easily conform to the unevenness of the skin, forming a cosmetic film that allows for uniform application of cosmetics.
The component (A) used in the present invention preferably contains one or more selected from those with a continuous silsesquioxane structure and one or more selected from those with a non-continuous silsesquioxane structure. This combination is preferable because it allows for both the uniformity of the cosmetic, characteristic of those with a non-continuous silsesquioxane structure, and the high coverage and smooth feel, characteristic of those with a continuous silsesquioxane structure. Furthermore, these components (A) can be blended individually or in combination of two or more, and it is more preferable to blend two or more in combination to adjust the coverage and smooth feel. Polymers with a refractive index of 1.395 to 1.454 at 25°C are preferred. In particular, the solid component (A) with a refractive index of 1.400 to 1.450 is more preferred.

Commercially available polymers of component (A) used in the present invention include DOWSIL 9040 Silicone Elastomer Blend (88% volatile cyclomethicone solution), DOWSIL EL-9140 Silicone Elastomer Blend (85% volatile dimethicone solution), DOWSIL 9541 Silicone Elastomer Blend (84% volatile dimethicone solution), DOWSIL EL-8040ID Silicone Organic Blend (82% volatile isododecane solution), DOWSIL TREFIL E-506S, and DOWSIL EP-9215 Cosmetic. Examples include Powder (manufactured by Dow-Toray), KSG-15 (95% volatile cyclomethicone solution: refractive index 1.397), KSG-42A (80% volatile isododecane solution), and KSG-045Z (80% volatile cyclomethicone solution).
Examples of polymers with a continuous silsesquioxane structure include KMP-590 (manufactured by Shin-Etsu Chemical Co., Ltd.), Tospar 2000B* (manufactured by Momentive), Tospar 150KA (manufactured by Momentive), MSP-N050 (manufactured by Nikko Rica Co., Ltd.), KSP-100, and KSP-411 (manufactured by Shin-Etsu Chemical Co., Ltd.).

The content of component (A) used in this invention is not particularly limited as a solid content, with a lower limit of 6% or more, but preferably 10% or more, and more preferably 15% or more. The upper limit is 35% or less, preferably 30% or less, and more preferably 20% or less. Containing it within this range is preferable because it provides higher coverage of the coating film, a smoother feel during application, and allows for compatibility with transparency of the appearance.

The volatile oil agent (B) used in the present invention, having a kinematic viscosity of 2.5 ^mm² /s or less at 25°C, is a liquid oil agent that is volatile at room temperature, and preferably has a kinematic viscosity of 1.0 ^mm² /s or more. Its boiling point is generally between 165 and 250°C, and specifically, examples include isododecane (refractive index 1.42), light paraffin (refractive index 1.43), cyclomethicone (refractive index 1.40), and dimethylpolysiloxane (refractive index 1.39), and one or more of these can be used as needed. Component (A) may be dispersed or swollen.

The content of component (B) used in this invention is not particularly limited as long as it is 30% or more at the lower limit, but 50% or more is preferred, and 70% or more is more preferred. The upper limit is 90% or less, 85% or less is preferred, and 80% or less is even more preferred. Including component (B) within this range is preferable because it allows for a large change in refractive index before and after application, resulting in high coverage of the coating film while maintaining high transparency of the cosmetic's appearance, and providing a smooth feel upon application. In this invention, including component (B) within this range is preferable because it lowers the refractive index of the oil before application, reducing the refractive index difference with the solid containing component (A), thereby increasing transparency. Furthermore, it is preferable because evaporation after application increases the refractive index of the remaining oil, increasing the refractive index difference with the solid, thus increasing coverage.

The component (C) non-volatile oil used in this invention is a non-volatile oil that is liquid at 25°C and has a boiling point of 260°C or higher at atmospheric pressure. Furthermore, component (C) is not particularly limited as long as its refractive index at 25°C is between 1.46 and 1.55; any oil commonly used in cosmetics can be used without particular restrictions. The refractive index value is rounded to three decimal places. While not particularly limited structurally, those having a phenyl group in the molecule are preferred. "Liquid at 25°C" means that, in addition to not being crystalline at 25°C, when a standard No. 8 bottle containing 40 mL of the sample is placed on its side and left in a 25°C environment for one week, the position of the liquid surface adhering to the side changes by 2.0 mm or more compared to the position before leaving it. A refractive index of 1.48 to 1.51 is more preferable. This range is preferable because it prevents the refractive index before application from becoming too high, resulting in higher transparency of the appearance, and because the difference in refractive index before and after application is large, increasing light scattering at the liquid-solid interface within the coating film and improving coverage.

Specific examples of component (C) used in the present invention include α-olefin oligomer (refractive index 1.46), liquid paraffin (refractive index 1.47), tridecyl trimellitic acid (refractive index 1.48), diphenylsiloxyphenyl trimethicone (refractive index 1.50), diphenyl dimethicone (refractive index 1.51), etc., and preferably phenyl-modified silicone. The inclusion of phenyl-modified silicone is desirable because it facilitates wettability with component (A) and enhances the transparency of the appearance.

Examples of commercially available components (C) used in this invention include Klearol White Mineral Oil (manufactured by Sonneborn), Nomcoat HP-30, Nomcoat HP-100 (manufactured by Nisshin Oillio Co., Ltd.), Liponate TD™ (manufactured by Lipo Chemicals Inc.), KF-53, KF-54, KF-56A, KF-54HV (manufactured by Shin-Etsu Chemical Co., Ltd.), SH-556 Fluid, PH-1555 HRI Cosmetic Fluid, and FZ-3156 (all manufactured by Toray Dow Corning Co., Ltd.).

The content of component (C) used in this invention is not particularly limited, but preferably at a lower limit of 1.0% or more, and more preferably at 3.0% or more. Containing it within this range is preferable because it allows for a large difference in refractive index before and after application, resulting in higher coverage of the coating film while maintaining high transparency of the cosmetic's appearance, and providing a smooth, dry feel upon application. Furthermore, while not particularly limited, the upper limit is preferably 15.0% or less, and more preferably 10.0% or less. Containing it within this range is preferable because it allows for a reduction in the amount of oil in the coating film, resulting in a stronger smooth, dry feel upon application.

The component (D) used in this invention, the anti-separation agent, is included to improve the uniformity of the cosmetic composition and to suppress the aggregation of component (A) in the cosmetic composition, thereby contributing to the stability of preventing waste liquid from easily separated oily components. A substance with such a function is preferably one that increases viscosity, that is, a substance that has a hydrophilic structure in oily cosmetic compositions while also being lipophilic, making it easily dispersible in oily components. Particularly, amphiphilic properties are more preferable. Specifically, surfactants with an HLB value of 3 to 8 and fuzzy silica are preferred. Including one or more of these selected is preferable because it maintains transparency while improving the uniformity of the cosmetic composition, and the uniformity and stability when other cosmetic compositions are layered on top.

The surfactant component (D) with an HLB value of 3 to 8 used in the present invention is not particularly limited and can be used without any particular restriction as long as it is commonly used in cosmetics, however, a surfactant with an HLB value of 4 to 6 is preferred. This range of HLB values is preferable because it adsorbs the cosmetic applied on top appropriately, resulting in excellent uniformity when the cosmetic is applied and effectively suppressing the aggregation of component (A) in the cosmetic. Here, HLB (Hydrophile-Lipophile Balance) in the present invention is an index that shows the balance between hydrophilicity and lipophilicity, and can be calculated by the following formula (1).
HLB=(ΣInorganic value/ΣOrganic)×10 (Formula 1)
Furthermore, the ratio of Σinorganic value to Σorganic value is called IOB (Inorganic-Organic Balance), and it can be calculated by accumulating the "inorganic value" and "organic value" of the atoms and functional groups that make up organic compounds such as surfactants, based on the "inorganic value" and "organic value" set for each atom and functional group (see Yoshio Koda, "Organic Concept Diagram - Fundamentals and Applications," pp. 11-17, Sankyo Publishing, 1984).

The surfactant component (D) with an HLB value of 3 to 8 used in the present invention is not particularly limited, but specifically includes PEG-9 dimethicone, PEG-9 methyl ether dimethicone, PEG-10 dimethicone, cetyl PEG/PPG-10/1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, cetyl PEG-9 polydimethylsiloxyethyl dimethicone, lauryl polyglyceryl 3-polydimethylsiloxyethyl dimethicone, bis(PEG/PPG-14/14) dimethicone, cetyl PEG Examples include PPG-10/1 dimethicone, PEG-30 dipolyhydroxystearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan dioleate, sorbitan monoisostearate, sorbitan diisostearate, sorbitan triisostearate, sorbitan monostearate, sorbitan sesquistearate, sorbitan distearate, polyglyceryl-2 triisostearate, etc. One or more of these can be used, and there are no particular limitations, but surfactants having a dimethicone skeleton are preferred. Surfactants having a dimethicone skeleton are preferred because they are less sticky and do not reduce the smooth feeling when applied.

Examples of commercially available surfactants with an HLB value of 3 to 8, component (D) used in the present invention, include KF-6019, KF-6017, KF-6016, KF-6048, KF-6028, KF-6038, KF-6105 (manufactured by Shin-Etsu Chemical Co., Ltd.), ABIL EM90, ABIL EM97, ABIL EM97S (manufactured by EVONIK Corporation), CITHROL DPHS (manufactured by Croda Japan Co., Ltd.), Cosmoll 82, Cosmoll 42V, Cosmoll 43V (manufactured by Nisshin Oillio Group Co., Ltd.), NIKKOL SO-10V, NIKKOL SS-15V, NIKKOL SI-10RV (manufactured by Nikko Chemicals Co., Ltd.), etc., and one or more of these can be used.

The content of component (D), a surfactant with an HLB value of 3 to 8, used in this invention is not particularly limited, but is preferably 0.1 to 5.0%, more preferably 0.3 to 5.0%, even more preferably 1.0 to 4.0%, and still more preferably 1.5 to 3.0%. When contained within this range, the cosmetic applied from above adheres appropriately without agglomeration, resulting in high uniformity of the cosmetic, suppression of agglomeration of component (A) in the cosmetic, and a high anti-separation effect, making it preferable in terms of stability.

The component (D) fuzzy silica used in this invention is a fine amorphous silica with a particle size of 100 nm or less. For example, it can be obtained by hydrolyzing silicon tetrachloride in a hydrogen and oxygen flame. Any silica commonly used in cosmetics can be used. Furthermore, the fuzzy silica may be hydrophobized before use. While not particularly limited, methods for hydrophobization include trimethylsiloxy treatment with trimethylsilyl chloride or hexamethyldisilazane, octylsilanization, coating and baking treatment using methylhydrogenpolysiloxane, and coating with metal soaps. From the viewpoint of ease of adjusting the anti-separation effect, hydrophobized fuzzy silica is more preferable, and even more preferable is silica that retains both hydrophilic and lipophilic portions, as not all surface hydroxyl groups have been completely treated.

Examples of commercially available fuzzy silica (component D) used in this invention include AEROSIL 90, AEROSIL 130, AEROSIL 200, AEROSIL 200F, AEROSIL 300, AEROSIL 380, AEROSIL R972, AEROSIL R974, AEROSIL R976S, AEROSIL RX200, AEROSIL R202, AEROSIL R805, AEROSIL R812, AEROSIL RA200H (all manufactured by Nippon Aerosil Co., Ltd.), Taranox 500 (manufactured by Talco), Cabotsil TS-530 (manufactured by Cabot), etc. One or more of these can be used.

The content of (D) fuzzy silica used in this invention is not particularly limited, but is preferably 0.1 to 5.0%, more preferably 0.1 to 3.5%, even more preferably 0.5 to 3.0%, and still more preferably 1.0 to 2.5%. Containing it within this range results in high uniformity and suppresses aggregation of component (A) in the cosmetic, thus providing a high anti-separation effect and being preferable in terms of stability.

The component (E) used in the present invention is a fluorine-modified silicone resin having a silanol group in its molecule, and is a compound having the structure of the following average formula (1).
R1nSiO(4-n)/2...Average formula (1)
(However, R1 is a hydrocarbon group having 1 to 8 carbon atoms, a phenyl group, a hydroxyl group, or a functional group of the general formula -R2-Rf, which can be arbitrarily selected from functional groups that require the general formula -R2-Rf; R2 is a divalent alkylene group having 2 to 6 carbon atoms; Rf is a perfluoroalkyl group having 1 to 8 carbon atoms; and n is the average number, where 0 < n ≤ 1.8.) (Hereinafter referred to as the above fluorine-modified silicone resin.)
This fluorine-modified silicone resin has excellent solubility in volatile oils and a long-lasting cosmetic effect, and can form a less sticky cosmetic film. Therefore, in the cosmetic composition of the present invention, it is possible to improve the long-lasting effect of the cosmetic while maintaining the transparency of the appearance and the smooth feel when applied. It can be used without particular limitations as long as it is soluble in the oil phase of the cosmetic composition, but it is more preferable when the average number of n in the above average formula (1) is 1.0 ≤ n ≤ 1.8, as this does not impair the smooth feel when applied and reduces stickiness. Examples of such fluorine-modified silicone resins, expressed by their INCI name (International Nomenclature Cosmetic Ingredient labeling names), include trifluoropropyldimethyl/trimethylsiloxysilicate. In the present invention, (E) preferably has a lower limit of 0.1% or more, more preferably 0.3% or more, and even more preferably 0.5% or more, from the viewpoint of uniformity of adhesion of the cosmetic applied from above and formulation stability. The upper limit is preferably 5% or less. Examples of commercially available fluorine-modified silicone resins include XS66-B8226 and XS88-B8636 (Momentive Performance Materials Japan LLC).

The ester oil agent (F) used in the present invention is not particularly limited as long as it is a non-volatile oil agent that is liquid at 25°C and has an ester group with 22 or fewer carbon atoms, other than the surfactants (B), (C), and (D) with an HLB value of 3 to 8. However, a monoester oil agent with 20 or fewer carbon atoms obtained by dehydration condensation of a fatty acid having a monovalent carboxylic acid and an alcohol having a monovalent hydroxyl group is preferred. This is preferable because it allows polar substances to be transparently dissolved in the cosmetic composition of the present invention. Examples of component (F) include monoester oil agents such as ethyl oleate, butyl oleate, isononyl isononanoate, and tridecyl isononanoate, and diester oil agents such as propylene glycol dicaprate, di(caprylic/capric acid)propylene glycol, and diisobutyl adipate.

The component (G) used in this invention, selected from glycol ethers and 1,2-alkanediols having 8 to 12 carbon atoms (one or more), is more preferably one that can dissolve in component (F) and maintain a transparent state. Examples include tripropylene glycol, phenoxyethanol, ethylhexylglycerin, caprylyl glycol, and 2-ethyl-1,3-hexanediol. The content of component (G) is not particularly limited, but is preferably 1% or less, and more preferably 0.5% or less. This range is preferable because it allows for maintaining a high level of transparency in the appearance.

The mass content ratio of the solid component (A) used in the present invention to the non-volatile oil agent (C) and (D), which is liquid at room temperature (25°C), is not particularly limited, but a ratio of solid component/non-volatile oil agent to 0.30 is preferred, and a ratio of solid component/non-volatile oil agent to 0.80 is more preferred. This range is preferable in that it provides good coverage after application, and also in that it results in a higher solid component ratio in the cosmetic film after application, providing a smooth, dry feel upon application.

The average refractive index (a value averaged by content and refractive index) of all liquid components contained in the cosmetic composition of the present invention, which are liquid at room temperature of 25°C and include components (B), (C), and (D) (and optionally components (F) and (G)), is not particularly limited, but is preferably 1.39 to 1.43, and more preferably 1.40 to 1.42. Furthermore, the average refractive index of the liquid components that are non-volatile at 25°C, including components (C) and (D) (and optionally the non-volatile liquids within components (F) and (G)), is preferably 1.45 or higher, and more preferably 1.46 or higher. This range is preferable because it reduces the difference between the average refractive index of all liquid components in the cosmetic composition at room temperature of 25°C and the refractive index of component (A), making it less likely for light scattering to occur at the liquid-solid interface in the cosmetic composition, thus increasing the transparency of the appearance. Furthermore, the difference between the average refractive index of the liquid and the refractive index of component (A) at 25°C, excluding volatile components in the coated film after application, is large. This is preferable because it facilitates light scattering at the liquid-solid interface within the coated film, resulting in higher coverage.

The present invention may be used to cover and correct uneven skin texture and discoloration, and it is preferable that the volatile components evaporate after application, resulting in increased coverage. The measurement method described below evaluates the opacity assuming the product has been applied. The higher the calculated ΔE, the lower the transparency of the cosmetic film and the higher the coverage. Therefore, a ΔE of 6 or higher is preferable, and a ΔE of 10 or higher is more preferable. If ΔE is less than 3, the transparency of the applied film is high, and the black color present in the background appears as black.
Measurement method: The sample is applied to the black portion of the opacity test paper (JIS K5101) to a thickness of 1500 μm using a doctor blade, and then dried at 70°C for 1 hour to prepare an opacity test paper with a decorative film. The L*a*b* values of only the black portion of the opacity test paper (JIS K5101) and the L*a*b* values of the opacity test paper with the coating (black portion) are measured, and the color difference ΔE is calculated.

Furthermore, in addition to the above-mentioned components (A) to (G), the cosmetic composition of the present invention may appropriately contain powders, oils, surfactants, humectants, colorfastness inhibitors, antioxidants, beauty ingredients, preservatives, fragrances, etc., within a quantitative and qualitative range that does not impair the effects of the present invention, depending on the purpose.

Other powders besides component (A) and component (D), fuzzy silica, are not particularly limited in terms of shape (spherical, plate-shaped, needle-shaped, etc.), particle size (fuzzy, fine particles, pigment-grade, etc.), and particle structure (porous, non-porous, etc.), as long as they are powders commonly used in cosmetics. Examples include inorganic powders, lustrous powders, organic powders, pigment powders, metal powders, and composite powders. Specifically, examples include white inorganic pigments such as titanium dioxide, zinc oxide, and barium sulfate; colored inorganic pigments such as iron oxide, carbon black, chromium hydroxide, and ultramarine; white body powders such as talc, muscovite, phlogopite, red mica, biotite, synthetic mica, sericite, synthetic sericite, kaolin, silicon carbide, bentonite, smectite, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, and boron nitride; luminous powders such as bismuth oxychloride, fish scale foil, polyethylene terephthalate-aluminum-epoxy laminated powder, polyethylene terephthalate-polyolefin laminated film powder, and polyethylene terephthalate-polymethyl methacrylate laminated film powder; polyamide resins, polyethylene resins, polyacrylic resins, polyester resins, fluororesins, cellulose resins, and polystyrene resins. Examples include organic polymer resin powders such as styrene-acrylic copolymer resin, polypropylene resin, and urethane resin; organic low molecular weight powders such as zinc stearate and N-acyllysine; natural organic powders such as silk powder and cellulose powder; organic pigment powders such as Red 201, Red 202, Red 205, Red 226, Red 228, Orange 203, Orange 204, Blue 404, and Yellow 401; organic pigment powders such as zirconium, barium, or aluminum lake, such as Red 3, Red 104, Red 106, Orange 205, Yellow 4, Yellow 5, Green 3, and Blue 1; or metal powders such as aluminum powder, gold powder, and silver powder. One or more of these powders can be used, and if necessary, the surface may be treated by known methods using fluorine compounds, silicone compounds, metal soaps, collagen, hydrocarbons, higher fatty acids, higher alcohols, esters, waxes, surfactants, etc., or a compound may be used. In particular, pigment-sized particles that easily block visible light, or those with a refractive index of less than 1.4 or greater than 1.5, may require adjustments to their formulation and content from the perspective of maintaining transparency, but this is not a specific limitation.

The oily components are those other than components (B), (C), (E), and (F), and are not particularly limited as long as they are commonly used in cosmetics. They can be used regardless of their properties (liquid, paste, solid, etc.), volatility (volatile, non-volatile), or origin (animal oil, vegetable oil, synthetic oil, etc.). Examples include oils and fats, ester oils (including UV absorbers), higher alcohols, silicone oils, fluorinated oils, and lanolin derivatives.

Any surfactant other than component (D), commonly used in cosmetics, can be used, including nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

The aqueous component is anything other than component (G), and examples include water, alcohols such as ethyl alcohol, glycols such as propylene glycol, 1,3-butylene glycol, and dipropylene glycol, glycerols such as glycerin, diglycerin, and polyglycerin, and plant extracts. However, since including large amounts may reduce transparency, it is preferable to include less than 1.5%.

Examples of humectants other than component (G) include urea and pyrrolidone carboxylate.

Examples of preservatives and antibacterial agents other than component (G) include parahydroxybenzoic acid esters, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, salicylic acid, carbolic acid, sorbic acid, benzalkonium chloride, trichlorocarbanilide, and photosensitizers.

Examples of antioxidants include tocopherol, butylhydroxyanisole, and dibutylhydroxytoluene; examples of pH adjusters include lactic acid, lactate, citric acid, citrate, glycolic acid, succinic acid, tartaric acid, malic acid, potassium carbonate, sodium bicarbonate, and ammonium bicarbonate; examples of chelating agents include alanine, sodium edetate, sodium polyphosphate, sodium metaphosphate, phosphate, and hydroxyethanediphosphone; examples of cooling agents include L-menthol, camphor, peppermint oil, and eucalyptus oil; and examples of anti-inflammatory agents include allantoin, glycyrrhetinate, glycyrrhetin derivatives, tranexamic acid, and azulene.

The embodiments of the present invention are not particularly limited and may be liquid, semi-solid, solid, etc., but liquid is preferred in terms of ease of application. Furthermore, the manufacturing method is not particularly limited and can be prepared by conventional methods, but it is preferable to disperse the solid components (A) and (D) in a liquid or oil containing the liquid components (B), (C), and (D), and (E), (F), and (G) using dispersion equipment such as a desper or three-roller system. The cosmetic composition of the present invention can also contain a propellant to produce aerosol or spray formulations. The propellant is not particularly limited as long as it is commonly used in cosmetics. Specific examples include liquefied petroleum gas, dimethyl ether, nitrogen, nitrous oxide, carbon dioxide, etc.

The cosmetics of the present invention are not particularly limited, but examples include makeup cosmetics such as foundation, primer, eye color, blush, lipstick, and lip balm; skincare cosmetics such as oil cosmetics and sunscreen; hair care cosmetics such as hair packs, hair oils, hair styling products, and hair protection products; and body cosmetics such as body oil. Among these, since the effects of the present invention are particularly pronounced, makeup cosmetics such as foundation and lipstick may be applied over primer, lip balm, oil cosmetics, and sunscreen, and there is no particular limitation on whether they are applied on top or below. Applying them underneath can also enhance the cosmetic effect of the cosmetic applied on top. More preferably, the cosmetics have a function to correct unevenness. Furthermore, it is even more preferable to use cosmetics or a method of applying cosmetics that utilize the fact that transparent or translucent cosmetics change towards opacity due to the natural evaporation of volatile components after application, thereby scattering light and providing coverage.

The present invention will be described in detail below with reference to examples. However, these examples do not limit the present invention in any way.

Examples 1-36 and Comparative Examples 1-11: Oil-based makeup base (including unevenness correction function)
A makeup base was prepared using the composition shown in Table 1 and the manufacturing method described below. The obtained makeup base was evaluated for (a) transparency of appearance, (b) coverage of the makeup film, (c) smooth feel upon application, (d) uniformity of the cosmetic, (e) formulation stability, and (f) makeup longevity using the methods described below, and the results are also shown in Table 1.

*1: Solid content of DOWSIL EL-9140 Silicone Elastomer Blend (85% volatile dimethicone 1.5cs solution) (manufactured by Dow-Toray) *2: KSG-15 (95% volatile cyclomethicone solution) (manufactured by Shin-Etsu Chemical Co., Ltd.)
Solid content *3: KSP-102 (manufactured by Shin-Etsu Chemical Co., Ltd.)
*4: Tospar 2000B* (manufactured by Momentive)
*5: Tospar 150KA (manufactured by Momentive)
*6: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)
*7: MSP-N050 (manufactured by Nikko Rica Co., Ltd.)
*8: KF-96L-1.5cs (manufactured by Shin-Etsu Chemical Co., Ltd.)
*9: KF-96A-6cs (manufactured by Shin-Etsu Chemical Co., Ltd.)
*10: KF-96H-100,000 cs (manufactured by Shin-Etsu Chemical Co., Ltd.)
*11: KF-6019 (manufactured by Shin-Etsu Chemical Co., Ltd.)
*15: Solid content of XS66-B8226 (manufactured by Momentive Performance Materials Japan Co., Ltd.)

*14: AEROSIL R976S (manufactured by Nippon Aerosil Co., Ltd.)

*12: ABIL EM90 (manufactured by EVONIK)
*13: ABIL EM97S (manufactured by EVONIK)

*16: Microglass Metashine MT1120RR (manufactured by Nippon Sheet Glass Co., Ltd.)

(Manufacturing Method) (Tables 1-5) (Ingredients not listed in the tables are not included.)
A: Components (1) to (10) were mixed with some of components (14) to (26) and kneaded using a three-roller system.
B: Components (11) to (13) and (27) to (32) were mixed with A.
C: Degassed B to obtain an oil-based makeup base.

(Evaluation method 1: (a) Transparency of appearance)
Each sample was packed into a glass cell with an optical path length of 10 mm and an optical path width of 10 mm. Using an empty cell as a control, the transmittance was measured using a UV-2500PC spectrophotometer (Shimadzu Corporation). The transmittance of light at a wavelength of 700 nm was evaluated and judged according to the following criteria.
<Judgment criteria>
(Judgment): (Evaluation)
A: Transmittance of 30.0% or more B: Transmittance of 2.0% or more and less than 30.0% C: Transmittance of 0.5% or more and less than 2% D: Transmittance of 0.3% or more and less than 0.5% E: Transmittance of less than 0.3%

(Evaluation method 2: (b) Coverage of the cosmetic film)
A sample was applied to the black portion of the opacity test paper (JIS K5101) using a doctor blade to a thickness of 1500 μm, and then dried at 70°C for 1 hour to prepare an opacity test paper with a decorative film. The L*a*b* values of only the black portion of the opacity test paper (JIS K5101) and the L*a*b* values of the opacity test paper with the coating (black portion) were measured using a NEC colorimeter, and the color difference ΔE was calculated. The calculated ΔE was evaluated and judged according to the following criteria.
<Judgment criteria>
(Judgment): (Evaluation)
A: ΔE 10 or more B: ΔE 6 or more but less than 10 C: ΔE 3 or more but less than 6 D: ΔE 1 or more but less than 3 E: ΔE less than 3

(Evaluation method 3: (c) Smooth texture upon application, (d) Uniformity of the cosmetic product, (f) Longevity of the makeup)
Ten cosmetic evaluation panel members were asked to take approximately 0.5g of each of the makeup bases from Examples 1-37 and Comparative Examples 1-11, spread it over their entire face, and apply it. For each sample, they were asked to determine whether they felt the characteristic smooth texture of solid components when spreading the cosmetic. For each sample, they were asked to apply a specific liquid foundation on top of the finished makeup film and visually inspect the finish of the liquid foundation to check for any areas where the powder had clumped together or gaps where the underlying skin tone was visible. For each sample, they were asked to apply only the makeup base to their entire face and evaluate it again after 6 hours to determine whether the applied film had lasted sufficiently. Each member evaluated each sample on a 5-point scale according to the evaluation criteria below, and a score was assigned to each sample. The average score of all panel members was then determined according to the judgment criteria below.

[Evaluation Criteria]
(Rating): (Result)
5 points: Excellent 4 points: Good 3 points: Average 2 points: Slightly Poor 1 point: Poor

[Judgment criteria]
(Judgment): (Average score of the grades)
A: 4.5 points or higher B: 4.0 points or higher but less than 4.5 points C: 3.5 points or higher but less than 4.0 points D: 2.0 points or higher but less than 3.5 points E: 1.0 points or higher but less than 2.0 points

(Evaluation method 4: (e) Stability of formulation)
Each sample was packed into a standard No. 8 bottle, stored in a 50°C constant temperature bath for one month, and visually inspected for separation or waste liquid, using the condition immediately after preparation as a baseline. The samples were then evaluated according to the following four-level evaluation criteria.
<Judgment criteria>
(Judgment): (Evaluation)
A: No change B: Some areas on the surface have a slight sheen due to liquid C: The entire surface has a sheen due to liquid, but no completely separated liquid is visible D: Clearly separated liquid is present on the surface E: Separated into two layers, with the lower layer gelled

As is clear from the results in Table 1, the makeup bases of Examples 1 to 37 had a transparent appearance, sufficient coverage of the applied film, a pleasant smooth feel upon application, allowed for uniform application of foundation on top, provided satisfactory makeup retention, and showed no liquid separation even after storage at 50°C for one month. On the other hand, Comparative Examples 1, 2, and 3, which did not contain component (A) and instead contained the same amount of high refractive index solids that were not cross-linked silicones, had a cloudy appearance because the refractive index values of the solids and liquids in the cosmetic were far apart. After the volatile oil evaporated, the refractive index values of the solids and liquids in the cosmetic film were close, resulting in high transparency and insufficient coverage. Comparative Example 4, which had a low content of component (A), had insufficient coverage due to the low solid content of the cosmetic film, and also did not provide a smooth feel. Comparative Example 5, which had a low content of component (B), and Comparative Example 6, which did not contain component (C), had high transparency in appearance, but the change in refractive index after application was small, resulting in unsatisfactory coverage. Comparative Example 7, in which the surfactant in component (D) was replaced with an surfactant with a lower HLB value, resulted in poor adhesion of the foundation applied on top, with multiple gaps where the underlying color was visible, indicating unevenness. Comparative Example 8, in which the fuzzy silica in component (D) was replaced with silica with a larger average particle size, also resulted in poor adhesion of the foundation applied on top, with multiple gaps where the underlying color was visible, indicating unevenness, and the cosmetic, after being left at 50°C for one month, separated into two layers, with the lower layer gelling, indicating poor stability. Comparative Example 9, in which the ratio of oil was changed to increase the refractive index of the oil phase in the cosmetic, resulted in a cloudy appearance and insufficient transparency. Comparative Example 10, which contained a large amount of pearl in the glass matrix, resulted in a cloudy appearance and insufficient transparency because the pearl in the cosmetic inhibited light transmission. Comparative Example 11, in which 2% purified water was added, resulted in a cloudy appearance because the purified water did not dissolve in the oil phase. Based on the above results, by combining the components of the present invention, it is possible to obtain an oil-based cosmetic that has a strong smooth feel upon application, forms a cosmetic film that allows for uniform application of foundation after application, has high coverage, excellent staying power, and high stability, with a transparent or translucent appearance.

Example 38: Undercoat
(Ingredients in the undiluted solution) (%)
(1) Dimethicone crosspolymer *1 10
(2) Polymethylsilsesquioxane (average particle size 6 μm) *4 10
(3) Dimethicone *8 Remaining amount (4) Hydrogenated polyisobutene *17 10
(5) Diphenylsiloxyphenyl trimethicone (refractive index 1.50) 4
(6) Sorbitan sesquioleate (HLB5) 2
(7) Trifluoroalkyldimethyltrimethylsiloxysilicate *15 0.5
(8) Dextrin isostearate *18 1
(9) Propylene glycol dicaprate 3
(10) Tripropylene glycol 0.3
(11) Ethylhexylglycerin 0.2
(12) Triethoxycaprylylsilane-treated red iron oxide 0.01
(13) Triethoxycaprylylsilane-treated yellow iron oxide 0.01
(14) Triethoxycaprylylsilane-treated black iron oxide 0.01
*17: IP Solvent 1620MU (manufactured by Idemitsu Kosan Co., Ltd.)
*18: Unifilma HVY (manufactured by Chiba Flour Milling Co., Ltd.)

(Manufacturing method)
A: Mix ingredients (1), (2), (5), (6), (12) to (14) using a three-roller mixer.
B: Mix A with components (3), (4), (7) to (11) at room temperature, fill into a container, and obtain a base.

The resulting base coat exhibited high transparency, excellent stability over time, a smooth feel upon application, and a highly effective cosmetic film with high coverage, longevity, and satisfactory uniformity of the cosmetic material.

Example 39: Control Color (Components) (%)
(1) Dimethicone crosspolymer *1 10
(2) Polymethylsilsesquioxane (average particle size 6 μm) *4 10
(3) (Dimethicone/(PEG-10/15)) Crosspolymer *19 5
(4) Dimethicone *8 Remaining amount (5) Hydrogenated polyisobutene *20 10
(6) Diphenyl dimethicone (refractive index 1.51) 3
(7) Sorbitan sesquioleate (HLB5) 2
(8) Trifluoroalkyldimethyltrimethylsiloxysilicate *15 0.5
(9) Polymethylsilsesquioxane *21 0.5
(10) Polyacrylate-44 0.5
(11) Tridecyl isononanoate 3
(12) Phenoxyethanol 0.2
(13) Stearoyl glutamate disodium treated red iron oxide 0.01
(14) Stearoyl glutamate disodium-treated yellow iron oxide 0.01
(15) Stearoyl glutamate disodium treated black iron oxide 0.01
(16) Red 202 0.01
(17) Triethoxycaprylylsilane treated ultramarine 0.01
(18) Cellulose *22 0.01
*19: Solid content of KSG-210 (75% dimethicone solution) (manufactured by Shin-Etsu Chemical Co., Ltd.) *20: IP Solvent 2028MU (manufactured by Idemitsu Kosan Co., Ltd.)
*21: SilForm Flexible Resin (manufactured by Momentive Performance Materials)
*22: Cellulobeds D-10 (manufactured by Daito Kasei Kogyo Co., Ltd.)

(Manufacturing method)
A: Mix ingredients (1), (2), (3), (6), (7), (13) to (17) using a three-roller mixer.
B: A and components (4), (5), (8) to (12), and (18) were mixed at room temperature to obtain a control color.

The resulting control color exhibited high transparency, excellent stability over time, a smooth feel upon application, and a highly effective cosmetic film with high coverage, longevity, and satisfactory uniformity.

Example 40: Sunscreen (ingredients) (%)
(1) Dimethicone crosspolymer *1 10
(2) Polymethylsilsesquioxane (average particle size 6 μm) *4 10
(3) Dimethicone *8 Remaining amount (4) Isododecane 10
(5) Ethylhexyl methoxycinnamate (refractive index 1.54) 3
(6) Silica (average particle size 7 nm) *23 1
(7) (Acrylates/Dimethicone) Copolymer *24 0.5
(8) (Acrylates/Ethylhexyl Acrylate/Dimethicone Methacrylate)
Copolymer *25 0.1
(9) Diethylamino hydroxybenzoyl hexyl benzoate 0.5
(10) Bis-ethylhexyloxyphenol methoxyphenyl triazine 0.5
(11) Polysilicone-15 0.5
(12) Tridecyl isononanoate 3
(13) Ethylhexylglycerin 0.2
(14) Stearic acid-treated titanium dioxide (average particle size 15 nm) 3.0
(15) Stearic acid-treated zinc oxide (average particle size 15 nm) 2.0
(16) Silica (average particle size 10 μm) 0.01
*23: AEROSIL 300 (manufactured by Nippon Aerosil Co., Ltd.)
*24: Solid content of KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.) *25: KP-578 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Manufacturing method)
A: Mix ingredients (1), (2), (5), (6), (14) to (16) using a three-roller mixer.
B: Heat and mix components (9) to (13) at 70°C until dissolved.
C: A, B, and ingredients (3), (4), (7) to (8) were mixed at room temperature to obtain a sunscreen.

The resulting sunscreen exhibited high transparency, excellent stability over time, a pleasant, smooth feel upon application, and a high level of coverage and longevity in the resulting cosmetic film, all of which were satisfactory in terms of uniformity.

Example 41: Daytime beauty oil (ingredients) (%)
(1) Dimethicone crosspolymer *1 10
(2) Polymethylsilsesquioxane (average particle size 6 μm) *4 10
(3) Dimethicone *8 Remaining amount (4) Isododecane 10
(5) Triethylhexyl trimellitate (refractive index 1.49) 3
(6) Sorbitan sesquioleate (HLB5) 2
(7) Trifluoroalkyldimethyltrimethylsiloxysilicate *15 0.5
(8) Ethyl oleate 3
(9) Caprylyl glycol 0.2
(10) Lavender oil 0.1
(11) Tripropylene glycol 0.1
(12) Plant extract (BG solution) 0.1
(13) Glycerin 0.01

(Manufacturing method)
Ingredients (1) to (13) were mixed at room temperature to obtain a daytime beauty oil.

The resulting daytime beauty oil exhibited high transparency in appearance, excellent stability over time, a pleasant smooth feel upon application, and the resulting cosmetic film offered high coverage and longevity, while also providing satisfactory uniformity of the cosmetic product.

Claims (9)

The following components (A) to (D):
(A) Cross-linked silicone 6-35% by mass
(B) 30 to 90% by mass of volatile oil with a kinematic viscosity of 2.5 ^mm² /s or less at 25°C
(C) Contains a non-volatile oil agent with a refractive index of 1.46 to 1.55 at 25°C, (D) contains a liquid separation inhibitor.
The aforementioned component (D) is one or more selected from surfactants with an HLB value of 3 to 8 and fuzzy silica.
An oil-based cosmetic product that is transparent or translucent in appearance. The oily cosmetic composition according to claim 1, further containing a fluorine-modified silicone resin as component (E). Furthermore, the oily cosmetic composition according to claim 1 or 2, further comprising, as component (F), an ester oil agent having 22 or fewer carbon atoms that is liquid at 25°C, other than components (B), (C), and (D). The oily cosmetic composition according to any one of claims 1 to 3, wherein component (A) contains one or more selected from those with a continuous silsesquioxane structure and one or more selected from those with a non-continuous silsesquioxane structure. The oily cosmetic composition according to any one of claims 1 to 3, wherein component (A) is one or more selected from polymethylsilsesquioxane, (vinyl dimethicone/methicone silsesquioxane) copolymer, dimethicone crosspolymer, and (dimethicone/vinyl dimethicone) crosspolymer. Furthermore, the oily cosmetic composition according to any one of claims 1 to 5 , further comprising as component (G) one or more selected from glycol ethers and 1,2-alkanediols having 8 to 12 carbon atoms. An oily cosmetic composition according to any one of claims 1 to 6 , wherein the mass content ratio of component (A) and a non-volatile oil that is liquid at room temperature of 25°C, containing components (C) and (D), is solids/non-volatile oil ≥ 0.30. The oil-based cosmetic composition according to any one of claims 1 to 7 , wherein the oil-based cosmetic composition is a cosmetic composition for correcting unevenness. A method of applying an oily cosmetic composition having a transparent or translucent appearance as described in any one of claims 1 to 8 to the skin, allowing component (B) to evaporate and providing coverage to the applied film.