Oil-based cosmetics

Abstract

An oil-based cosmetic is supplied containing: (a) a non-volatile oily agent having a kinematic viscosity at 25°C of 4 mm² / s to 20 mm² / s and a boiling point at 1 atm below 290°C; (b) spherical particles; (c) a film-forming agent; and (d) a colouring substance, with a mass ratio of (b) spherical particles to (a) the non-volatile oily agent between 1.0 and 3.5. No figure

Description

Title of the invention: Oil-based cosmetic

[0001] The present application is based on, and claims, the benefit of priority from Japanese patent application No. 2024-152328 filed on September 4, 2024. Scope of the invention

[0002] This disclosure relates to an oil-based cosmetic product.

[0003] Related prior art

[0004] Oil-based cosmetics are a form of cosmetic widely used for foundation, eyeshadow and the like, and various functions and sensations of use can be achieved by changing the type or quantity mixed with an oily agent and a powder intended to be mixed in the cosmetic.

[0005] The present inventors have previously proposed, in the patent document 1, an oil-based powder foundation containing spherical particles, titanium dioxide, a film-forming agent, a volatile oily agent, and a surfactant. The oil-based powder foundation described in patent document 1 has good spreading ability, which is a characteristic of an oil-based product, and also has the function of quickly transitioning to a powder feel after application, and is excellent in terms of makeup durability (resistance to sebum and perspiration).

[0006] Patent document 1: Japanese patent application not examined, publication no. 2022-176122 Summary of the invention

[0007] Since the oil-based powder foundation described in patent document 1 contains a relatively large amount of volatile oily agent, an airtight container is necessary during storage. In this regard, in the case of a composition containing no volatile liquid or a low proportion of volatile liquid, various containers other than the airtight container may be used, and a change in composition due to drying can be avoided as much as possible.

[0008] Therefore, one objective of the present disclosure is to provide a new oil-based cosmetic product that exhibits excellent spreadability upon application, rapidly transforms into a powder-like feel after application, and offers excellent makeup durability, even when a volatile liquid is not essential.

[0009] Specific means for solving the above problems include the following embodiments.

[0010] <1> An oil-based cosmetic containing: (a) a non-volatile oily agent having a kinematic viscosity at 25°C of 4mm2 / s to 20mm2 / s and a boiling point at 1 atm of 290°C or more; (b) spherical particles; (c) a film-forming agent; and (d) a coloring matter,

[0011] wherein the mass ratio between the content of (b) spherical particles and the content of (a) non-volatile oily agent is between 1.0 and 3.5.

[0012] <2> Oil-based cosmetics as described in aspect <1> , in which a the proportion of volatile liquid having a boiling point at 1 atm below 290°C is less than 5% by mass.

[0013] <3> Oil-based cosmetics as described in aspect <1> Or <2> , In in which the proportion of (a) the non-volatile oily agent is between 15% by mass and 50% by mass.

[0014] <4> Oil-based cosmetics as described in any of the aspects <1> has <3> , in which the proportion of (b) spherical particles is between 30% by mass and 65% by mass.

[0015] <5> Oil-based cosmetics as described in any of the aspects <1> has <4> , further containing: (e) a wax.

[0016] <6> Oil-based cosmetics as described in any of the aspects <1> has <5> in which the oil-based cosmetic does not contain any silicone compound.

[0017] <7> Oil-based cosmetics as described in any of the aspects <1> has <6> , in which an index of natural origin (excluding water), calculated in accordance with ISO 16128, is 90% or more.

[0018] <8> Oil-based cosmetics as described in any of the aspects <1> has <7> , which is a cosmetic for foundation, eyeshadow, eyebrows, cheek or base.

[0019] According to this disclosure, it is possible to provide a new oil-based cosmetic product which, upon application, offers excellent spreadability, quickly transforms into a powder-like feel after application and offers excellent makeup durability, even when a volatile liquid is not essential. Detailed description of the invention

[0020] Specific embodiments of this disclosure will be described in detail below. In this description, unless otherwise indicated, an "x to y" notation using numeric values ​​x and y means "x or more and y or less." In such an expression, when a unit is added only to the numerical value y, the unit is also applied to the numerical value x.

[0021] <Cosmétique à base d’huile>

[0022] The oil-based cosmetic according to this embodiment contains: (a) a non-volatile oily agent having a kinematic viscosity at 25°C of 4mm2 / s to 20mm2 / s and a boiling point at 1 atm of 290°C or more (hereinafter also referred to as "component (a)"); (b) spherical particles (hereinafter also referred to as "component (b)"); (c) a film-forming agent (hereinafter also referred to as "component (c)"); and (d) a colorant (hereinafter also referred to as "component (d)"), and the mass ratio between the content of component (b) and the content of component (a) is between 1.0 and 3.5.

[0023] The oil-based cosmetic according to this embodiment is excellent in terms of its spreadability upon application, quickly transitions to a powdery feel after application, and offers excellent makeup durability even when a volatile liquid is not required. The reason for this is not clear, but is presumed as follows. That is, upon application, excellent spreadability is achieved by the non-volatile oily agent with low viscosity, and after application, a powdery feel is obtained through the spherical particles. Furthermore, because the spherical particles adhere to the skin surface via the film-forming agent, excellent makeup durability is achieved.

[0024] In what follows, each of the components contained in the oil-based cosmetic according to this embodiment will be described in detail. Each of the following components can be used alone, or can be used in combination with two or more of them.

[0025] [(a) Non-volatile oily agent]

[0026] In this description, the term "non-volatile" means that the boiling point at 1 atm is 290°C or higher.

[0027] A non-volatile oily agent as a component (a) has a kinematic viscosity at 25°C of 4 mm² / s to 20 mm² / s (4 cs to 20 cs). When the kinematic viscosity of the non-volatile oily agent at 25°C is 4 mm² / s or higher, good spreadability, which is characteristic of an oil-based product, tends to be readily apparent. Furthermore, when the kinematic viscosity of the non-volatile oily agent at 25°C is 20 mm² / s or lower, spreadability at the time of application is improved, and a good powdery feel tends to be obtained after application. The kinematic viscosity of the non-volatile oily agent at 25°C is preferably 4 mm² / s to 18mm² / s, and more preferably from 4mm² / s to 15mm² / s. Kinematic viscosity is a value measured at 25°C using a type B viscometer.

[0028] The non-volatile oily agent is not particularly limited as long as it has a kinematic viscosity at 25°C of 4 mm² / s to 20 mm² / s and can be used for cosmetics. Examples of non-volatile oily agents include ester oils such as dicaprylyl carbonate, coco caprylate / caprate, heptyl undecylenate, hydrogenated ethylhexyl olivate / hydrogenated olive oil unsaponifiables, ethyl isostearate, and hexyl laurate; and hydrocarbon oils such as C15-19 alkanes and liquid paraffin. Among these, an oily agent of vegetable origin is preferable from the point of view of reducing an environmental impact.

[0029] A commercially available product can also be used as a non-volatile oiling agent. Examples of commercially available dicaprylyl carbonate products include Cetiol CC (manufactured by BASF). Examples of commercially available coconut caprylate / caprate products include Liponate CCC MB (manufactured by Vantage Specialty Ingredients, Inc.) and Cetiol C5C (manufactured by BASF). Examples of commercially available heptyl undecylenate products include LexFeel Natural (manufactured by INOLEX). Examples of commercially available hydrogenated ethylhexyl olivate / hydrogenated olive oil unsaponifiables products include Natura-Tec Plantsil (manufactured by H. Holstein Co., Ltd.) and Vegetable Alternative to Silicone (VAS) (manufactured by Kowa Company, Ltd.).Examples of commercially available ethyl isostearate products include EIS-V (manufactured by KOKYU ALCOHOL KOGYO CO., LTD.). Examples of commercially available hexyl laurate products include KAK HL (manufactured by KOKYU ALCOHOL KOGYO CO., LTD.). Examples of commercially available C15-19 alkane-containing products include Jeechem NDA-5 (manufactured by Jeen International Corporation) and EMOSMART L19 (manufactured by SEPPIC SA). Examples of commercially available liquid paraffin products include Liquid Paraffin No. 50S (manufactured by Sanko Chemical Industry Co., Ltd.).

[0030] A proportion of component (a) is preferably from 15% by mass to 50% by mass, preferably from 18% by mass to 45% by mass, and, even more preferably, from 20% by mass to 40% by mass.

[0031] [(b) Spherical particles]

[0032] In the present description, the term "spherical" includes not only a true spherical shape but also an substantially spherical shape, an elliptical spherical shape and the like, and designates a shape in which a ratio (aspect ratio) between a major axis and a minor axis is from 1.0 to 1.5, and preferably from 1.0 to 1.2. A spherical particle, as component (b), may have a smooth surface, may have pores on the surface, or may have tiny irregularities on the surface.

[0033] The volume-weighted average diameter of a spherical particle is preferably between 5 µm and 30 µm, more preferably between 6 µm and 25 µm, and even more preferably between 7 µm and 20 µm. When the volume-weighted average diameter of a spherical particle falls within the above range, the oil-based cosmetic according to the present embodiment tends to exhibit a good feel, a good finish, and a good blurring function (a gradation function to make pores and the like less visible). The volume-weighted average diameter is a particle diameter (median diameter) at which accumulation reaches 50% when a cumulative volume distribution curve is plotted from a small-diameter side in the particle size distribution measured by a laser diffraction / scattering method.

[0034] The material of the spherical particles is preferably chosen from the point of view of dispersibility (wetting of the spherical particles) and usability in oil-based cosmetics. Examples of spherical particles include cellulose powder, cellulose acetate powder, calcium carbonate powder, silica powder, and urethane powder. Among these, plant-derived spherical particles such as cellulose and cellulose acetate are preferable from the point of view of reducing environmental impact.

[0035] As spherical particles, a commercially available product can also be used. Examples of commercially available cellulose powder products include CELLULOBEADS D-10 and CELLULOBEADS D-5 (both manufactured by DAITO CHEMICAL CO., LTD), Celluflow C-25 (manufactured by JNC Corporation), RUBLALEAF KCX (manufactured by Dainichisika Color & Chemicals Mfg. Co., Ltd.), and GE-800 (manufactured by TOSHIKI PIGMENT CO., LTD). Examples of commercially available cellulose acetate powder products include BELLOCEA S7 (manufactured by Daicel Corporation) and Celluflow TA-25 (manufactured by JNC Corporation). Examples of commercially available calcium carbonate powder products include SCS-M5 (manufactured by Sakai Chemical Industry Co., Ltd.) and NL-QC10 (manufactured by NEW LIME CO., LTD.). Examples of silica powder products available in the commercial products include the SB-700 (manufactured by Miyoshi Kasei, Inc.).Examples of commercially available urethane powder products include TP Powder D-400 and D-800 (both manufactured by TOSHIKI PIGMENT CO., LTD).

[0036] The proportion of component (b) is preferably from 30% by mass to 65% by mass, and more preferably from 35% by mass to 60% by mass.

[0037] The mass ratio between the content of component (b) and the content of component (a) is from 1.0 to 3.5. When the content of component (b) is equal to or greater than 1.0 times the content of component (a), a good powder feel tends to be obtained after application. Furthermore, when the content of component (b) is equal to or less than 3.5 times the content of component (a), the spreadability at the time of application tends to be good, and the durability of the makeup after application tends to be good. The mass ratio of the content of component (b) to the content of component (a) is preferably from 1.1 to 3.0, and more preferably from 1.1 to 2.3.

[0038] [(c) Film-forming agent]

[0039] A film-forming agent as component (c) has a paste-like or solid state at 25°C, and has a property of dissolving in the non-volatile oily agent as component (a), to form a film on skin.

[0040] Examples of film-forming agents include rosin-based resins (pentaerythrityl hydrogenated rosinate, pentaerythrityl rosinate, glyceryl rosinate, and the like); acrylic resins having an acrylic polymer as the main chain and a hydrophobic group in a side chain; natural ester resins (candelilla wax extract and carnauba wax extract); sugar fatty acid esters (dextrin isostearate and the like); modified starch; isobutene-based resins (isobutyl polyvinyl ether, polyisobutylene, and the like); and vinyl acetate-based resins. Among these, dextrin isostearate and candelilla wax extract are preferable with regard to makeup durability, reduced environmental impact, and the like.

[0041] The film-forming agent is preferably used by dissolving it in a solvent from the point of view of uniform spreading of the film-forming agent during use. Examples of solvents include triethylhexanoin.

[0042] A commercially available product can also be used as a film-forming agent. For example, commercially available examples of pentaerythrityl hydrogenated rosinate include Ester Gum HP (manufactured by Arakawa Chemical Industries, Ltd.). Examples of commercially available candelilla wax extract products include Candelilla Resin El (manufactured by Japan Natural Products Co., Ltd.). Examples of commercially available carnauba wax extract products include T0WAX-1B4 (manufactured by TOA KASEI CO., LTD.). Examples of commercially available dextrin isostearate products include Unifilma HVY and Unifilma Liquid TEH (75% wt. triethylhexanoin solution) (both manufactured by Chiba Flour Milling Co., Ltd.).

[0043] The proportion of component (c) is preferably between 0.1% by mass and 15% by mass, more preferably between 0.5% by mass and 12% by mass, and, even more preferably, between 1% by mass and 10% by mass.

[0044] [(d) Dye]

[0045] There are no particular limitations with regard to colored material as a component (d), provided that it can be used in cosmetics. The colored material is not limited to a chromatic dye and may be an achromatic material, a pearlescent agent, a brightening agent, and the like. Examples of colored material include inorganic white pigments such as titanium dioxide and zinc oxide; inorganic red pigments such as iron oxide (red iron oxide) and iron titanate; inorganic brown pigments such as y-iron oxide; inorganic yellow pigments such as yellow iron oxide and loess; inorganic black pigments such as black iron oxide and lower-order titanium oxide; and inorganic violet pigments such as manganese violet and cobalt violet. inorganic green pigments such as chromium oxide, chromium hydroxide and cobalt titanate;inorganic blue pigments such as ultramarine blue and Prussian blue; carbon-based black pigments such as carbon black and graphite; metal powders such as aluminum powder, gold powder, silver powder, and copper powder; pearlescent agents such as titanium oxide-coated mica and iron oxide-titanium oxide-coated mica; brightening agents such as boron nitride and mica; organic pigments such as Ri. Red 104, Ri. Red 201, Ri. Red 202, Ri. Red 218, Ri. Red 219, Ri. Red 220, Ri. Red 223, Ri. Red 225, Ri. Red 226, Ri. Red 227, Red No. 228, Ri. Red 228, and Ri. Red 228. 504, Orange No. 201, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 201, Yellow No. 203, Yellow No. 204, Yellow No. 403, Blue No. 1, Blue No. 404, Green No. 3, Green No. 201, Green No. 202, Green No. 204 and violet No. 201;and natural colorants such as [3-carotene, a cotinyl pigment, a red cabbage pigment, riboflavin, crocin, anthraquinone, canthaxanthin and a safflower pigment. ;

[0046] The colored material can be subjected to a surface treatment to improve the wettability of the non-volatile oily agent. Examples of a surface treatment agent include a fluorinated compound, a silane coupling agent, a metallic soap, a fatty acid, and a plant-derived ester. Among these, the plant-derived ester is preferable, and polyglyceryl-2 tetraisostearate is the most preferable, from the point of view of reducing an environmental load.

[0047] The proportion of component (d) is preferably between 0.1% by mass and 30% by mass, preferably between 1% by mass and 25% by mass, and, even more preferably, between 5% by mass and 20% by mass.

[0048] [(e) Wax]

[0049] The oil-based cosmetic according to this embodiment may contain (e) a wax (hereinafter also referred to as "component (e)") in order to obtain, for example, a solid-type cosmetic.

[0050] Examples of waxes include natural waxes such as sunflower wax, carnauba wax, candelilla wax, beeswax, Japanese wax, and rice bran wax; mineral waxes such as polyethylene wax, paraffin wax, microcrystalline wax, and ceresin; saturated fatty acids such as myristic acid, palmitic acid, stearic acid, arachidic acid, and behenic acid; esters of higher fatty acids such as cetyl palmitate; and higher alcohols such as cetanoyl, stearyl alcohol, and behenyl alcohol. Of these, a wax of vegetable origin is preferable from the point of view of reducing environmental impact.

[0051] In the case where the oil-based cosmetic according to the present embodiment contains component (e), its proportion is preferably from 0.1% by mass to 5% by mass, more preferably from 0.5% by mass to 4% by mass, and, even more preferably, from 1% by mass to 3.5% by mass.

[0052] [(f) Surfactant]

[0053] The oil-based cosmetic according to this embodiment may contain (f) a surfactant (hereinafter also referred to as "component (f)") in order to improve the wettability of component (b) and component (d) to the non-volatile oily agent.

[0054] A surfactant as component (f) is preferably a nonionic surfactant having a hydrophilic-lipophilic balance (HLB) value equal to or less than 10, and preferably a nonionic surfactant having an HLB value equal to or less than 6. The HLB value indicates a balance between hydrophilicity and lipophilicity and is determined by a Griffin formula. In cases where two or more types of surfactants are used, the arithmetic mean of the values ​​obtained by multiplying the HLB value of each surfactant by a mixing ratio of each surfactant is defined as the HLB value.

[0055] Examples of nonionic surfactants having an HLB value of 10 or less include sorbitan esters such as sorbitan monoisostearate, sorbitan monooleate, sorbitan sesquisiisostearate, and sorbitan sesquioleate; diglyceryl esters such as diglyceryl monoisostearate and diglyceryl monooleate; and sucrose fatty acid esters, polyoxyethylene alkyl ethers, and polyoxyethylene hardened castor oils. Among these, a plant-derived nonionic surfactant is preferable from the perspective of reducing an environmental load.

[0056] In a case where the oil-based cosmetic according to the present embodiment contains component (f), a proportion of it is preferably from 0.1% by mass to 5% by mass, more preferably from 0.3% by mass to 4% by mass, and, even more preferably, from 0.5% by mass to 3% by mass.

[0057] [Other components]

[0058] (Volatile liquid)

[0059] The oil-based cosmetic according to this embodiment does not necessarily require a volatile liquid, but may contain one. In this description, the term "volatile" means that the boiling point at 1 atm is below 290°C. Examples of volatile liquids include C9-12 alkanes, isododecane, n-tridecane, and water.

[0060] A proportion of the volatile liquid is preferably less than 5% by mass, more preferably 3% by mass or less, even more preferably 1% by mass or less, and can be 0% by mass (i.e. no volatile liquid is contained).

[0061] (Modified Organic Bentonite)

[0062] The oil-based cosmetic according to this embodiment may contain a modified organic bentonite to adjust viscosity or the like. The modified organic bentonite is a type of colloidal hydrated aluminum silicate having a three-layer structure and is generally a clay mineral modified with a cationic surfactant of the quaternary ammonium salt type. Examples of modified organic bentonite include dimethyldistearylammonium hectorite (disteardimonium hectorite), dimethylalkylammonium hectorite, benzyldimethylstearylammonium hectorite, and aluminum magnesium treated with distearyldimethylammonium chloride.

[0063] (Other)

[0064] The oil-based cosmetic according to this embodiment may contain, in addition to the components described above, powder (barium sulfate or similar) other than component (b) and component (d), an ultraviolet absorbent, an antioxidant, an antiseptic, and other substances. Furthermore, provided that the effect of this disclosure is not impaired, the oil-based cosmetic may contain a non-volatile oily agent (having a kinematic viscosity at 25°C outside the range of 4 mm² / s to 20 mm² / s) other than component (a).

[0065] Process for preparing an oil-based cosmetic]

[0066] A process for preparing an oil-based cosmetic according to the present embodiment is not particularly limited, and a known process for preparing an oil-based cosmetic may be adopted. An example of such a preparation process is as follows. First, components (a) and (c), as well as component (e), Component (f), and other components mixed as needed, are heated to a temperature of 80°C to 90°C and dissolved. Then, components (b) and (d), along with other components mixed as needed, are added to the resulting liquid and stirred. After stirring, the mixture is left to stand at 80°C to 90°C to allow for defoaming, then poured into a container and cooled.

[0067] The oil-based cosmetic according to this embodiment preferably does not contain any silicone compound in order to reduce environmental impact, and other factors. Furthermore, in the oil-based cosmetic according to this embodiment, in order to reduce environmental impact, and other factors, the natural origin index (excluding water) calculated in accordance with ISO 16128 (hereinafter simply abbreviated as "natural origin index") is preferably greater than or equal to 90%, more preferably greater than or equal to 95%, and, even more preferably, greater than or equal to 98%.

[0068] [Application of oil-based cosmetics]

[0069] The oil-based cosmetic product according to this embodiment has good spreadability, which is a characteristic of an oil-based product, and also has a rapid change to a powder-like feel after application, and is excellent in terms of makeup durability (sebum resistance and perspiration resistance). Therefore, the oil-based cosmetic product according to this embodiment can be appropriately used as a foundation (solid or liquid type), eyeshadow, eyebrow, cheek, base, or similar cosmetic. Examples

[0070] The present disclosure will be described more specifically below with reference to examples, but the present disclosure is not limited by these examples.

[0071] <Exemples 1 à 11 et Exemples comparatifs 1 à 5>

[0072] Oil-based cosmetics of examples 1 to 11 and comparative examples Components 1 through 5 were prepared as follows. First, from the respective components shown in Tables 1 through 5 below, one component (a) or oiling agent, one component (c), one component (e), and one component (f) were mixed, heated to between 80°C and 90°C, and dissolved. Then, one component (b), one component (d), and other components were added to the resulting liquid and stirred. After stirring, the mixture was left to stand at between 80°C and 90°C for defoaming, filled into a container, and cooled. The numerical values ​​in a column for each component in Tables 1 through 5 indicate a mixing ratio (unit: % by mass) of the component, and an empty cell indicates that the component was not mixed. Furthermore, all kinematic viscosities in Tables 1 through 5 are values ​​at 25°C.

[0073] <Evaluation>

[0074] The oil-based cosmetics in Examples 1 to 11 and Comparative Examples 1 to 5 were subjected to a real-world use test by six specialists to evaluate four criteria: "spreadability," "powdery feel," "finish," and "makeup durability." The scoring was carried out using the evaluation points from 1 to 5 indicated below, and an average value (obtained by rounding to two decimal places) from the six specialists was evaluated according to the 4-level evaluation criteria from A to D indicated below. The results are presented in Tables 1 to 5 below.

[0075] (Evaluation points)

[0076] 5: Very good

[0077] 4: Good

[0078] 3: Normal

[0079] 2: Slightly lower

[0080] 1: Lower

[0081] (Evaluation criteria)

[0082] A: The average value of the evaluation points is greater than or equal to 4.1

[0083] B: The average value of the evaluation points is between 3.1 and 4.0

[0084] C: The average value of the evaluation points is between 2.1 and 3.0

[0085] D: The average value of the evaluation points is less than or equal to 2.0

[0086] [Tables 1] Component (¾ by mass) Natural origin kinematic index (mm² / s) ■ example 1 2 3 t 3 (a) Dicaprylyl carbonate *1 1 , OR 25.8 Caprylate / cabrate decocu *2 1.0 u ■è 28.0 21.8 Ethyl leostearate' *3 1.00 fi 2 r < t Aexyl carbonate *4 1 30 r Liquid paraffin *5: U » OR 11 1 ÿ. 0 Squalane oil agent *8 1.0 u □ n Jojuba oil *7 1.00 0 (b) Cellulose powder (4pm) *3 1 30 tcf 4 «3.5 41.5 Cellulose acetate powder (7^) *5: 1 , OR A ~ c Powder- of urethane (7gm) *10 3 z 0 û 42.3 vC; dex.tr me laostearate *11 1.00 4. G 3, 0 4, 'j Candelilla wax extract *12 1 30. Li Mixture of trimethylsiloxysilicic acid and dimethicone *13 U , OR Dimethicone: e- 13, 0 (d> Titanium dioxide treated with polyglyceryl-2 tetraisoatearate *14 3 z 27 16.0 .10, 0 10, 0 16.0 Red iron oxide treated with polyglyceryl-2 tetraisoatearate *15 1.00 1, 5 1, 5 i; 5 1, 5 Yellow iron oxide treated with polyglyceryl-2 tetraisoatearate *16 1 30 Cq 5 0.5 0.5 - t ,j Black iron oxide treated with polyglyceryl-2 tetraisostearate *17 1 z or 8 z 1 U tr 0.1 U , X Titanium dioxide treated with silicone *18 3.28 J. U , ! J Silicone-treated yellow iron oxide *12 0.27 1.5 Silicone-treated red iron oxide *2u 0.97 U , u Silicone-treated black iron oxide *21 0.98 0.1 (eJ Sunflower wax *22 1 z 0 u .2.0 -■ z U y Ç; Carnauba wax *23 1.00 ■0.5 1.0 0 < 5 Cerein *24 Q, 30 4 / il i S es -gui c1eate de sorbit ta ne * 25 1 , ou 1 z 0 X, 0 — f '• Other axcana en ■_.!?—rs *^8 1 z 0 u 1.8 I.aododé cane * 2 7 0.00 r < C Barium sulfate *28 1 30 2 r C 0, 9 0 , 9- ~ t 9 Disteardimonium hectorite *29 0, 98 — f '• Tu-tax ru 3 zu 106,0 130. 3 j Q û . lu3, U Mass ratio between component (b) and component {a) or oily agent 1, 9 r, tr < C 2,1 x, t Presence / absence of silicone compound Absent Absent S"é 1 -1 Present Absent Natural origin index (¾) >29 >9^ > 9 7 T > 9 9 Resulta- l'evalu ai ion Apti code a.11 and aleiiént h A À. AA Sensation of thumb AAABA Fun. AAAAA Makeup hold AAAA A. .

[0087] [Tables 2]

[0088] [Tables3]

[0089] [Tables4]

[0090] [Tables5]

[0091] The details of each component used in examples 1 to 11 and comparative examples 1 to 5 are as follows. *1 Dicaprylyl carbonate: Cetiol CC, manufactured by BASF *2 Coco Caprylate / Caprate: Liponate CCC MB, manufactured by Vantage Specialty Ingredients, Inc. *3 Ethyl isostearate: EIS-V, manufactured by KOKYU ALCOHOL KOGYO CO., LTD. *4 Hexyl laurate: KAK HL, manufactured by KOKYU ALCOHOL KOGYO CO., LTD. *5 Liquid paraffin: Liquid paraffin no. 50S, manufactured by Sanko Chemical Industry Co., Ltd. *6 Squalane: sugar squalane, manufactured by Nikko Chemicals Co., Ltd. *7 Jojoba Seed Oil: Purified jojoba oil, manufactured by Yokozeki Oil & Fat Industries Co., Ltd. *8 Cellulose powder (volume weighted average diameter: 14pm): CELLULOBEADS D-10, manufactured by DAITO CHEMICAL CO., LTD. *9 Cellulose acetate powder (volume-weighted average diameter: 7pm): BELLOCEA S7, manufactured by Daicel Corporation *10 Urethane powder (volume weighted average diameter: 7pm): TP Powder D-800, manufactured by TOSHIKI PIGMENT CO., LTD. *11 Dextrin Isostearate: Unifilma HVY, manufactured by Chiba Flour Milling Co., Ltd. *12 Candelilla wax extract: El candelilla resin, manufactured by Japan Natural Products Co., Ltd. *13 Trimethylsiloxysilicic acid / dimethicone mixture: KF-7312K (resin component: 60%, dimethicone: 40%), manufactured by Shin-Etsu Chemical Co., Ltd. *14 Titanium dioxide treated with polyglyceryl-2: titanium dioxide PGQ R250, manufactured by DAITO CHEMICAL CO., LTD. *15 Red iron oxide treated with polyglyceryl-2 tetrasostearate: PGQ Red ri. 21 IP, manufactured by DAITO CHEMICAL CO., LTD. *16 Yellow iron oxide treated with polyglyceryl-2 tetrasostearate: PGQ Yellow ri. 602F, manufactured by DAITO CHEMICAL CO., LTD. * 17 Black iron oxide treated with polyglyceryl-2 tetraisostearate: PGQ Black 710P, manufactured by DAITO CHEMICAL CO., LTD. *18 Silicon-treated titanium oxide: SA-titanium CR-50 (100%), manufactured by Miyoshi Kasei, Inc. * 19 Silicone-treated yellow iron oxide: SA-Yellow LL-100P (100%), manufactured by Miyoshi Kasei, Inc. * 20 Silicone-treated red iron oxide: SA-Red R-516PS (100%), manufactured by Miyoshi Kasei, Inc. *21 Black iron oxide treated with silicone: SA-Black BL-100P (100%), manufactured by Miyoshi Kasei, Inc. * 22 Sunflower wax: purified sunflower wax, manufactured by Yokozeki Oil & Fat Industries Co., Ltd. * 23 Camauba wax: Camauba wax No. 1, manufactured by S. KATO & CO. * 24 Ceresin: Purified ceresin N, manufactured by NIKKO RICA CORPORATION. * 25 Sorbitan sesquioleate: RHEODOL AO-15V, manufactured by Kao Corporation. * 26 C9-12 alkanes: Jeechem NDA-LC, manufactured by Jeen International Corporation. *27 Isododecane: Marukasol R, manufactured by Maruzen Petrochemical CO., LTD. * 28 Barium sulfate: H-LFM plate-shaped barium sulfate, manufactured by Sakai Chemical Industry Co., Ltd. * 29 Hectorite disteardimonium: BENTONE 38, manufactured by Elementis

[0092] The dimethicone contained in the trimethylsiloxysilicic acid / dimethicone mixture used in Example 4 corresponds to component (a) because the kinematic viscosity at 25°C is 6mm2 / s and the boiling point at 1 atm is 290°C or more.

[0093] As shown in Tables 1 to 5, the oil-based cosmetics of Examples 1 to 11, containing components (a) to (d) and with a mass ratio of component (b) to component (a) between 1.0 and 3.5, exhibit excellent spreadability upon application, a non-sticky powder feel after application, and excellent makeup durability. In contrast, the oil-based cosmetics of Comparative Examples 1 and 2, in which an oily agent with high kinematic viscosity was used instead of component (a), exhibited inferior spreadability upon application and did not provide a powdery feel after application. Furthermore, in the oil-based cosmetic of Comparative Example 3, with a mass ratio of component (b) to component (a) less than 1.0, no powdery feel was obtained after application.In contrast, the oil-based cosmetic in comparative example 4, whose mass ratio between the content of component (b) and the content of component (a) was greater than 3.5, exhibited lower spreadability and shorter makeup durability upon application. Furthermore, the oil-based cosmetic in comparative example 5, lacking component (c), exhibited an inferior finish after application and shorter makeup durability.

[0094] The oil-based cosmetics of Examples I to 4 and I to 11 are suitable as solid foundation, while that of Example 5 is suitable as liquid foundation. For reference, formulation examples other than foundation are shown in Table 6 below. The numerical values ​​in a column for each component in Table 6 indicate the mixing ratio (unit: % by mass) of the component, and a blank space indicates that the component is not mixed. Furthermore, all kinematic viscosities in Table 6 are values ​​at 25°C. An oil-based cosmetic of formulation Example 1 is suitable for eyeshadow, an oil-based cosmetic of formulation Example 2 is suitable for the cheeks, and an oil-based cosmetic Formulation Example 3 is suitable for a basic cosmetic.

[0095] [Tableauxô]

Claims

Demands

1. An oil-based cosmetic, characterized in that it comprises: (a) a non-volatile oily agent having a kinematic viscosity at 25°C of 4mm2 / s to 20mm2 / s and a boiling point at 1 atm of 290°C or more; (b) spherical particles; (c) a film-forming agent; and (d) a colouring material, wherein the mass ratio of the content of (b) spherical particles to the content of (a) non-volatile oily agent is between 1.0 and 3.

5.

2. Oil-based cosmetic according to claim 1, characterized in that a proportion of volatile liquid having a boiling point at 1 atm below 290°C is less than 5% by mass.

3. Oil-based cosmetic according to claim 1 or claim 2, characterized in that the proportion of (a) non-volatile oily agent is between 15% by mass and 50% by mass.

4. Oil-based cosmetic according to any one of claims 1 to 3, characterized in that the proportion of (b) spherical particles is between 30% by mass and 65% by mass.

5. Oil-based cosmetic according to any one of claims 1 to 4, characterized in that it further comprises: (e) a wax.

6. Oil-based cosmetic according to any one of claims 1 to 5, characterized in that the oil-based cosmetic does not contain a silicone compound.

7. Oil-based cosmetic according to any one of claims 1 to 6, characterized in that an index of natural origin (excluding water), calculated in accordance with ISO 16128, is 90% or more.

8. Oil-based cosmetic according to any one of claims 1 to 7, characterized in that it is a cosmetic for foundation, eyeshadow, eyebrows, cheeks or base.