Oily cosmetic for eyelashes

Abstract

To provide an oily cosmetic for eyelashes that exhibits stringiness, gives excellent lash bundle sensation (separation effect), lengthening effect, and glossy appearance right after application, and resists clumping even with repeated coating.SOLUTION: An oily cosmetic for eyelashes comprising the following components (A) and (B): (A) 13 to 33 mass% of microcrystalline wax, (B) 10 to 25 mass% of trimethylsiloxysilicate having a weight average molecular weight of 5,500 or more, and (C) a volatile liquid oil, wherein the mass ratio (B) / (A) of component (B) to component (A) is 0.5 to 2.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oily cosmetic for eyelashes. [Background technology]

[0002] In the field of eyelash cosmetics, studies have been conducted to impart curling and volume effects to eyelashes, making them look beautiful, and maintaining the cosmetic effect. In particular, one method for increasing adhesion to eyelashes and creating a lengthening and volume effect is to impart stringiness to the cosmetic by using polymers or polysaccharides. For example, Patent Document 1 describes that a mascara composition containing highly polymerized polyethylene glycol, a water-soluble, stringy polymer, provides volumizing and lengthening effects to eyelashes. Patent Document 2 describes that a stringy composition containing a lysine derivative-modified silicone and silicone-modified pullulan is effective in making eyelashes appear longer. Patent Document 3 describes a cosmetic composition that can be used as both a mascara and eyeliner, which combines a lengthening effect with a supple cosmetic film, and contains two types of trimethylsiloxysilicate, a solid hydrocarbon oil, a dextrin fatty acid ester, a powder, and a volatile oil as strong film-forming agents. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-79940 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-314655 [Patent Document 3] Japanese Patent Application Laid-Open No. 2011-207865 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional eyelash cosmetics do not separate eyelashes neatly, and are not fully satisfactory in terms of separation and length. [Means for solving the problem]

[0005] The present inventors have discovered that an oily cosmetic for eyelashes that solves the above-mentioned problems can be obtained by combining a microcrystalline wax with trimethylsiloxysilicate having a specific weight-average molecular weight in a specific ratio.

[0006] The present invention comprises the following components (A), (B) and (C): (A) 13 to 33% by mass of microcrystalline wax having a melting point of 85°C or less, (B) 10 to 25 mass% of trimethylsiloxysilicate having a weight average molecular weight of 5,500 or more, (C) Volatile liquid oil wherein the mass ratio (B) / (A) of the component (B) to the component (A) is 0.5 to 2. [Effects of the Invention]

[0007] The oily cosmetic for eyelashes of the present invention has thread-forming properties, gives excellent bunched (separated) eyelashes, length and gloss immediately after application, and is resistant to clumping even when applied in multiple layers. In the present invention, "spinnability" refers to the property of an object that exhibits its extensibility, that is, the property of "pulling threads," and one example of this is the "spinniness of natto." DETAILED DESCRIPTION OF THE INVENTION

[0008] Component (A) is a microcrystalline wax having a melting point of not more than 85° C. In the present invention, the melting point is a value measured in accordance with JIS K-2235-5.3.2. The microcrystalline wax of component (A) has thread-forming properties, improves the sense of separation and length, does not clump even when applied multiple times, and can be applied smoothly from the base to the tip of the eyelashes. From these viewpoints, the melting point is preferably 84°C or lower, more preferably 83°C or lower. From the same viewpoints, it is preferably 60°C or higher, more preferably 63°C or higher, and even more preferably 65°C or higher. Such waxes may be commercially available products, such as Multiwax W-445 and W-835 (both manufactured by SONNEBORN), Hi-Mic-2065 (manufactured by Nippon Seiro Co., Ltd.), and the like.

[0009] The microcrystalline wax of component (A) is a petroleum wax, and is mainly composed of saturated hydrocarbons with large molecular weights and side chains. From the viewpoint of adhesion to eyelashes, the microcrystalline wax preferably has a penetration index at 25°C of 20 to 110. Here, the penetration index is determined by measuring the length of penetration of a specified needle (needle mass 2.5±0.02 g, needle holder mass 47.5±0.02 g, weight mass 50±0.05 g) into a wax sample maintained at 25±0.1°C in 5 seconds, and multiplying the penetration distance (mm) by 10 to obtain the penetration index, which is a value measured in accordance with JIS K-2235-5.4 or ASTM D-1321.

[0010] Component (A) can be used alone or in combination of two or more, and from the viewpoints of maintaining threadability over time, leaving eyelashes long, separated, and glossy after application, and preventing clumping even when reapplied, the content of component (A) is 13% by mass or more, preferably 14% by mass or more, and more preferably 16% by mass or more, of the total composition, and 33% by mass or less, preferably 31% by mass or less, and more preferably 28% by mass or less.

[0011] Component (B) used in the present invention is trimethylsiloxysilicate with a weight-average molecular weight of 5,500 or more. Trimethylsiloxysilicate is a crosslinked silicone, also known as MQ resin. Its structure is a crosslinked compound with a siloxane structure as the main backbone, and has the average composition formula [(CH3)3SiO1 / 2 ] S [SiO2] T (S is 1 to 3, T is 0.5 to 8) is preferred. The weight-average molecular weight of component (B) is 5,500 or more, but from the viewpoints of solubility in solvents and ease of cleansing without burdening the eyelashes, it is preferably 5,800 or more. In addition, since the coating hardens after application and becomes easily damaged over time, it is preferably 10,000 or less, and more preferably 8,000 or less.

[0012] In the present invention, the weight average molecular weight is a value determined by SEC (size exclusion chromatography) analysis using polystyrene as a standard substance under the following conditions. [Measurement conditions] Column: K-804L + K-804L (Showa Denko) Eluent: 1 mmol / L Farmin DM20 / CHCl3 Flow rate: 1.0mL / mi Column temperature: 40℃ Detector: RI Injection volume: 100μL Molecular weight standard: polystyrene

[0013] Component (B) is preferably solid and can be blended in solid form, but can also be dissolved in a solvent for use. Examples of the solvent include silicone oil and hydrocarbon oil, and one or more selected from methyltrimethicone, dimethylpolysiloxane (2cs), dimethylpolysiloxane (6cs), octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane can be used.

[0014] Commercially available trimethylsiloxysilicate of component (B) includes BELSIL TMS 803 SILICONE RESIN (solid content 53%, diluted with isododecane) (Wacker Chemie AG) and KF-9021-ID (solid content 50%, diluted with isododecane) (Shin-Etsu Chemical Co., Ltd.).

[0015] Component (B) can be used alone or in combination of two or more, and from the viewpoints of maintaining threadability over time, leaving eyelashes long, separated, and glossy after application, and preventing clumping even when reapplied, the content of component (B) is 11% by mass or more, preferably 12% by mass or more, and more preferably 13% by mass or more, of the total composition, and 25% by mass or less, preferably 24% by mass or less, and more preferably 20% by mass or less.

[0016] In the present invention, the mass ratio (B) / (A) of component (B) to component (A) is 0.5 or more, preferably 0.55 or more, and more preferably 0.6 or more, from the viewpoint of the development of spinnability and the maintenance of spinnability over time during storage, and is 2 or less, preferably 1.5 or less, and more preferably 1.2 or less.

[0017] Component (C) of the present invention is a volatile liquid oil (volatile oil). "Volatile" means that it has a flash point of 35 to 88° C. "Liquid" means that it has fluidity. Examples of the volatile oil include volatile hydrocarbon oils and volatile silicone oils. Examples of volatile hydrocarbon oils include paraffinic hydrocarbon oils such as n-decane, n-undecane, and n-dodecane; isoparaffinic hydrocarbon oils such as isodecane, isododecane, and hydrogenated polyisobutene; and cyclic paraffinic hydrocarbon oils such as cyclodecane and cyclododecane. Examples of volatile silicone oils include linear dimethylpolysiloxanes such as octamethyltrisiloxane (1cs), decamethyltetrasiloxane (1.5cs), and dimethylpolysiloxane (2cs); branched siloxanes such as methyltrimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0018] Of these, hydrocarbon oils having 8 to 16 carbon atoms are preferred, hydrocarbon oils having 10 to 16 carbon atoms are more preferred, and hydrocarbon oils having 12 carbon atoms are even more preferred. The volatile oil of component (C) preferably contains an isoparaffinic hydrocarbon, which has thread-forming properties, provides excellent lash bundle (separated), length, and gloss immediately after application, and is less likely to clump even when reapplied. Commercially available products include Marukasol R (manufactured by Maruzen Petrochemical Co., Ltd.: flash point 47°C) and Pearleem 3 (manufactured by NOF Corporation: flash point 61°C).

[0019] The volatile oil of component (C) can be used alone or in combination of two or more, and from the viewpoints of reduced spinnability and tendency to clump when reapplied, the content is preferably 25% by mass or more, more preferably 30% by mass or more, and even more preferably 35% by mass of the total composition. Also, from the viewpoints of prolonged drying time after application, stickiness, and reduced eyelash curling effect, the content is preferably 65% ​​by mass or less, more preferably 60% by mass or less, and even more preferably 55% by mass or less.

[0020] The oily cosmetic for eyelashes of the present invention may further contain (D) a dextrin fatty acid ester. The dextrin fatty acid ester is not limited as long as it is one that is commonly used in cosmetics, and is preferably an ester of dextrin with a fatty acid having 8 to 24 carbon atoms. The average degree of polymerization of the dextrin is preferably 3 to 150. Specific examples include dextrin palmitate, dextrin stearate, dextrin palmitate-stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate, dextrin myristate, and dextrin palmitate-2-ethylhexanoate. Of these, from the viewpoint of the amount of cosmetic that can be removed with an applicator and the ease of spreading with an applicator, dextrin palmitate, dextrin myristate, and dextrin palmitate / 2-ethylhexanoate are preferred, with dextrin palmitate being more preferred.

[0021] The dextrin fatty acid ester of component (D) can be used alone or in combination of two or more types, and from the viewpoints of maintaining threadability, leaving the eyelashes long, separated, and glossy after application, and not causing clumping even when reapplied, as well as the finished look of the eyelashes and the quality stability of the cosmetic, the content is preferably 2% by mass or more of the total composition, more preferably 3% by mass or more, and preferably 8% by mass or less, more preferably 7% by mass or less.

[0022] The oily cosmetic for eyelashes of the present invention may further contain (E) an organically modified clay mineral. As the organically modified clay mineral, a cationically modified clay mineral obtained by treating a layered clay mineral such as bentonite, laponite, hectorite, montmorillonite, or aluminum magnesium silicate with a quaternary ammonium salt type cationic surfactant is preferred. Here, the quaternary ammonium salt type cationic surfactant is represented by the following formula (1):

[0023] [ka]

[0024] (In the formula, R 1 represents an alkyl group having 10 to 22 carbon atoms or a benzyl group, and R 2 represents a methyl group or an alkyl group having 10 to 22 carbon atoms, and R 3 and R 4 represents an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or a methyl sulfate residue. It is expressed as:

[0025] Cationically modified clay minerals obtained by treating layered clay minerals with quaternary ammonium salt-type cationic surfactants include, for example, dimethyl distearyl ammonium hectorite, dimethyl distearyl ammonium bentonite, and benzyl dimethyl stearyl ammonium hectorite, with dimethyl distearyl ammonium hectorite being more preferred. Commercially available products include Benton 38, Benton 38VCG, and Benton 27 (all manufactured by Elementis Specialties).

[0026] The organically modified clay mineral can also be used as a dispersion liquid (premix gel) diluted with a solvent, because it improves workability and has an excellent effect of thickening oil. As the solvent, from the viewpoint of the thickening effect of the oil, octyldodecanol, mineral oil, etc. are preferred. Furthermore, from the viewpoint of efficiently dispersing the organically modified clay mineral and exhibiting the thickening effect, it is preferred to contain polar additives such as propylene carbonate, ethanol, water, and various surfactants. Examples of premix gels that can be used include Benton Gel EUGV, Benton Gel MIOV, Benton Gel VS-5 PCV, and Benton Gel PTM, each containing 10% by mass of cation-modified clay minerals, 18% by mass of cation-modified clay minerals, and 15% by mass of cation-modified clay minerals (all manufactured by Elementis Japan Co., Ltd.); and other commercially available products such as Benton Gel ISD V, Benton Gel OLV V, Benton Gel PTIS V, Benton Gel TMF V, and Benton Gel VS-5PC V HV (all manufactured by Elementis Japan Co., Ltd.).

[0027] The organically modified clay minerals of component (E) can be used alone or in combination of two or more, and from the viewpoints of maintaining threadability, leaving the eyelashes long, separated and glossy after application, not causing clumping even when applied in multiple layers, as well as providing a smooth application feel and good adhesion to the eyelashes, the content is preferably 2% by mass or more of the total composition, more preferably 4% by mass or more, and preferably 7% by mass or less, and more preferably 6% by mass or less.

[0028] The oily cosmetic for eyelashes of the present invention may further contain (F) a dimer dilinoleic acid diester. Dimer dilinoleic acid diesters are diesters of dimer dilinoleic acid obtained by polymerization of two molecules of unsaturated fatty acid. Examples of the ester moiety of dimer dilinoleic acid include higher alcohols such as isopropyl alcohol, cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, lauryl alcohol, and linoleyl alcohol, dimer diols formed by polymerization of two molecules of unsaturated alcohols such as dimer dilinoleyl alcohol, phytosterols, and castor oil.

[0029] Specific examples include dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, (phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, dimer dilinoleyl bisstearyl dimer dilinoleate, and hydrogenated castor oil dimer dilinoleate. From the viewpoints of having threadability, excellent adhesion when applied to the eyelashes, giving the eyelashes a bunched feel (separated feel) and long feel immediately after application, non-smearing, excellent gloss, and being less likely to clump even when applied in layers, component (F) preferably contains one or more selected from di(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, and diisopropyl dilinoleate, and more preferably contains at least di(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate.

[0030] Commercially available products that can be used include "Plandool-G" (manufactured by Nippon Fine Chemicals Co., Ltd.) as dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, "Plandool-H" (manufactured by Nippon Fine Chemicals Co., Ltd.) as dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), "LUSPLAN DA-DD-IS" (manufactured by Nippon Fine Chemicals Co., Ltd.) as dimer dilinoleyl bisstearyl dimer dilinoleate, "Lisocasta DA-L" (manufactured by Kokyu Alcohol Kogyo Co., Ltd.) as hydrogenated castor oil dimer dilinoleate, and "KAK DADIP-R" (manufactured by Kokyu Alcohol Kogyo Co., Ltd.) as diisopropyl dilinoleate.

[0031] The dimer dilinoleic acid diesters of component (F) can be used alone or in combination of two or more. From the viewpoints of maintaining threadability, leaving the eyelashes with a long, separated and glossy feel after application, and not causing clumping even when reapplied, as well as improving adhesion to the eyelashes and suppressing stickiness, the content is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 3% by mass or less, and more preferably 2% by mass or less, of the total composition.

[0032] The oily eyelash cosmetic of the present invention may further contain a wax other than component (A) that is solid at 25° C. "Solid at 25° C." refers to a state in which the surface, volume, and shape do not change when stored at 25° C. Examples of waxes other than component (A) that are solid at 25° C. include hydrocarbon waxes other than component (A), such as paraffin wax and polyethylene wax; rice bran wax, carnauba wax, candelilla wax, sunflower seed wax, beeswax, ceresin, silicone wax, and hydrogenated jojoba oil.

[0033] The wax other than component (A) that is solid at 25°C can be used alone or in combination of two or more kinds. From the viewpoints of having thread-forming properties, being less likely to form lumps even when applied in multiple layers, and suppressing deterioration in application properties and usability, the content is preferably 10 mass% or less, and more preferably 0.1 to 10 mass%, of the total composition.

[0034] In the oily eyelash cosmetic of the present invention, the total wax content including component (A) is preferably 15% by mass or more, more preferably 18% by mass or more, and even more preferably 20% by mass or more, from the viewpoints of having thread-forming properties, being less likely to clump even when reapplied, and suppressing deterioration in application properties and usability. Also, from the same viewpoints, it is preferably 40% by mass or less, more preferably 35% by mass or less, and even more preferably 33% by mass or less.

[0035] Furthermore, in the oily eyelash cosmetic of the present invention, the mass ratio (A) / (total wax amount) of component (A) to the total wax content is preferably 0.5 or more, more preferably 0.6 or more, and even more preferably 0.7 or more, from the viewpoints of having thread-forming properties, giving excellent lash bundle (separated), length, and gloss immediately after application, preventing clumping even when reapplied, and preventing deterioration in the feel when used. Also, from the same viewpoints, it is preferably 1 or less.

[0036] The oily cosmetic for eyelashes of the present invention may further contain a non-volatile oil that is liquid at 25°C, other than (F). A non-volatile oil agent that is liquid at 25°C is an oil component that has fluidity at 25°C, and includes a paste-like oil component as long as it has fluidity. The oil agent that is liquid at 25°C may be any oil agent that is used in ordinary cosmetics, such as hydrocarbon oils, ester oils, ether oils, silicone oils, higher alcohols, etc. Specific examples include linear or branched hydrocarbon oils such as liquid paraffin, liquid isoparaffin, mineral oil, squalane, squalene, and petrolatum; vegetable oils such as avocado oil, macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil, jojoba oil, sunflower oil, camellia oil, and corn oil; and animal oils such as liquid lanolin.Isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate, isostearyl myristate, octyldodecyl ricinoleate, octyl hydroxystearate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, octyl methoxycinnamate, tocopheryl acetate, propylene carbonate, diisostearyl malate, propylene glycol dicaprylate, Neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diglyceryl diisostearate, propanediol diisostearate, glyceryl monomyristate monoisostearate, glyceryl diisostearate, glyceryl triisostearate, propanediol di(caprate / caprylate), glyceryl tri(caprylate / caprate), glyceryl tri-2-ethylhexanoate, triethylhexanoin, trimethylolpropane tri-2-ethylhexanoate, trimethyl triisostearate Tyrolpropane, pentaerythrityl tetraoctanoate, pentaerythrityl tetraethylhexanoate, pentaerythritol tetraisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octacaprylate, ditrimethylolpropane oligoester (isostearate / sebacic acid), dipentaerythrityl tripolyhydroxystearate, dilauroyl glutamate (phytosteryl / octyldodecyl), lauroyl glutamic acid di(phytosteryl / behenyl / octyldodecyl), isostearic acid trehalose esters, tetraisostearate dipentaerythrityl, pentaisostearate dipentaerythrityl, hydroxystearate ethylhexyl, phytosterol fatty acid esters, cholesterol fatty acid esters, polyglycerin fatty acid esters, pentaerythritol fatty acid esters, dl-α-tocopherol, nicotinic acid dl-α-tocopherol ester oils, etc.;Examples of suitable oils include higher alcohols such as cetanol, behenyl alcohol, isostearyl alcohol, jojoba alcohol, oleyl alcohol, stearyl alcohol, and long-chain branched aliphatic alcohols; and silicone oils such as diphenyl dimethicone, dimethyl polysiloxane, methyl cyclo polysiloxane, methyl phenyl polysiloxane, methyl hydrogen polysiloxane, higher alcohol-modified organo polysiloxane, tris(trimethylsiloxy)methyl silane, and trimethyl pentaphenyl trisiloxane.

[0037] The non-volatile oils that are liquid at 25°C other than component (F) can be used singly or in combination of two or more. From the viewpoints of achieving a smooth application feel and suppressing bleeding after use, it is preferable that the content is zero or, if present, a small amount, and is preferably 0.001% by mass or more of the total composition, more preferably 0.1% by mass or more, and preferably 5% by mass or less, and more preferably 3% by mass or less.

[0038] The oily cosmetic for eyelashes of the present invention may further contain powders, such as extender pigments, colorants, and photosensitive powders. Examples of the extender pigment include inorganic pigments such as silicic anhydride, talc, sericite, and synthetic phlogopite, and composite powders of these.

[0039] Examples of color pigments include metal oxides such as red iron oxide, black iron oxide, and yellow iron oxide; synthetic organic pigments such as Red No. 201, Red No. 202, Red No. 227, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment.

[0040] Luster pigments that can be used include those in which the surface of plate-like powders such as mica, synthetic phlogopite, glass, silica, alumina, etc. is coated with colorants such as titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, organic pigments, etc., and film rolls cut into any shape such as polyethylene terephthalate-polymethyl methacrylate laminated powder, polyethylene terephthalate-aluminum vapor-deposited powder, and polyethylene terephthalate-gold vapor-deposited laminated powder can be used.

[0041] The oily cosmetic for eyelashes of the present invention may further contain ingredients used in ordinary cosmetics, such as surfactants, fibers, water-soluble solvents, film-forming agents, inorganic salts, ultraviolet absorbers, ultraviolet scattering agents, moisturizers, colorants, fragrances, antioxidants, sequestering agents, and water.

[0042] The oily eyelash cosmetic of the present invention can be produced by uniformly mixing and stirring the components according to a conventional method. Specifically, it is preferable to produce the cosmetic by heating and dissolving components (A), (B) and other oily components, mixing and stirring them, cooling them to 50°C, and then mixing and stirring again with preservatives, aqueous components and other excipients. The oily cosmetic for eyelashes of the present invention can be a non-water-oil cosmetic or a water-in-oil emulsion cosmetic.

[0043] The oily eyelash cosmetic of the present invention can be applied using an applicator commonly used for mascara and the like, such as a brush made of fibers twisted with wire, a comb-shaped or coil-shaped applicator, or a resin-molded brush molded into a brush shape using a resin. [Example]

[0044] Examples 1 to 14, Comparative Examples 1 to 10 Oil-based eyelash cosmetics (mascaras) were prepared with the compositions shown in Tables 1 and 2, and evaluated for stringiness, stringiness upon removal from the brush, length, separation, clumping resistance when applied multiple times, and gloss. The results are also shown in Tables 1 and 2.

[0045] (Manufacturing method) Components (A) to (C) and other oily components were heated to dissolve, stirred, and mixed, and then cooled to 50°C. The aqueous component and remaining components were added, and the mixture was stirred again to produce an oily cosmetic for eyelashes (mascara).

[0046] (Evaluation method) (1) Threadability: Immediately after production, after 24 hours, and after two months of storage at 45°C, 20 g of each cosmetic was filled into a glass container with an inner diameter of 32 mm and a depth of 40 mm. The container was removed at the specified number of days and temperatures, and spinnability was evaluated using a SUN RHEO METER COMPAC-1002 (manufactured by Sun Scientific Co., Ltd.) rheometer. A φ10 mm plunger was attached to the SUN RHEO METER COMPAC-1002 rheometer, and the plunger was inserted into the composition to a depth of 5 mm at a speed of 600 mm / min. It was then raised to a height of 50 mm at a speed of 600 mm / min. If the eyelash cosmetic had a length of 11 mm or more, it was deemed to have spinnability. The results were indicated as "Good" if spinnability was present, and "Poor" if spinnability was absent.

[0047] (2) Stringiness when removed from the brush: Each cosmetic was filled into a bottle with a lid, which contained a brush made of commonly used fibers twisted with a wire, and the evaluation was carried out. When the brush was removed from the bottle, it was visually inspected for the presence of stringiness like broken rubber, and evaluated according to the following criteria. (Evaluation criteria) 5: More than 17 people answered that they could confirm that the material was spinnable by appearance. 4: 12 to 16 people answered that they could confirm that the material was spinnable by appearance. 3: 8 to 11 people answered that they could confirm that the material was spinnable by appearance. 2: Fewer than 7 people answered that they could confirm that the material was spinnable by appearance.

[0048] (3) Lengthening, separation, clump-free application, and gloss: Twenty female panelists applied each oil-based cosmetic for eyelashes (mascara) to their eyelashes and conducted a sensory evaluation of the length, separation, clumping resistance when applied multiple times, and shine. The feeling of length was evaluated from the viewpoint of whether the subject felt that their eyelashes were longer after application than before application, the feeling of separation was evaluated from the viewpoint of whether the eyelashes clumped together due to adhesion after application, and the feeling of gloss was evaluated from the viewpoint of whether the subject's eyelashes felt glossier after application than before application. For reapplication, clumps of mascara formed on the eyelashes when the mascara was spread up to five times during the first application were evaluated as clumps.

[0049] The results were shown according to the following criteria: (Evaluation criteria) 5: More than 17 people answered yes. 4: 12-16 people answered that it was good. 3: 8-11 people answered that it was good. 2: Fewer than 7 people answered yes.

[0050] [Table 1]

[0051] [Table 2]

[0052] *1: Microcrystalline wax 1 (Multiwax W-445 S, melting point 76-82°C, manufactured by Sonneborn, LLC), *2: Microcrystalline Wax 2 (Multiwax W-835, melting point 65-80°C, manufactured by Sonneborn, LLC), *3: Microcrystalline wax 3 (HNP-0190, melting point 87-93°C, manufactured by Nippon Seiro Co., Ltd.), *4: Synthetic wax 1 (BASEWAX H 1038, manufactured by Paramelt BV), *5: Synthetic wax 2 (Lip wax A-4, manufactured by Nippon Natural Products Co., Ltd.), *6: Paraffin wax (Paraffin Wax-155, manufactured by Nippon Seiro Co., Ltd.) *7: Beeswax (Golden Brand, manufactured by Miki Chemical Industry Co., Ltd.) *8: Trimethylsiloxysilicate 1 (BELSIL TMS 803 SILICON® RESIN, weight average molecular weight 6000, active ingredient amount 53%, isododecane solvent, manufactured by Wacker Chemie AG), *9: Isododecane (Marukasol R, manufactured by Maruzen Petrochemical Co., Ltd.), *10: Iron oxide (TAROX synthetic iron oxide BL-100P, manufactured by Titanium Industries Co., Ltd.), *11: Nylon-6 (White Nylon 2-9D, manufactured by Cosmeticals), *12: Trimethylsiloxysilicate 2 (silicone X-21-5595, weight average molecular weight 5000, active ingredient 60%, isododecane solvent, manufactured by Shin-Etsu Chemical Co., Ltd.), *13: Trimethylsiloxysilicate 3 (SR1000, weight average molecular weight 3500, active ingredient 95%, isododecane solvent, manufactured by Momentive Performance Materials Japan LLC), *14: Disteardimonium hectorite (Bentone 38VCG, manufactured by Elementis Specialties), *15: Dimer acid diester, dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) (PLANDOOL-H, manufactured by Nippon Fine Chemical Co., Ltd.), *16: Polyglyceryl-2 diisostearate (Cosmol 42V, manufactured by Nisshin Oillio Group Co., Ltd.),

[0053] Test Example 1 The length of the drawn threads was evaluated for the oily eyelash cosmetics (mascaras) of Examples 1, 4, 5, 11 to 14 and Comparative Examples 5 and 9. The results are shown in Table 3.

[0054] (Evaluation method: length of drawing line) Each cosmetic was left to stand in a 30°C thermostatic bath for 6 hours, and a φ10mm plunger was attached to a SUN RHEO METER COMPAC-1002 (manufactured by Sun Scientific Co., Ltd.). Approximately 4g of each cosmetic was transferred to a plastic container with an inner diameter of 18mm and a depth of 9mm, and the container was filled to the surface level. The plunger was inserted into the composition to a depth of 5mm at a speed of 600mm / min, and then raised to a height of 50mm at a speed of 600mm / min. The length of the thread (the length until the cosmetic broke) was measured. Note that if the length was 11mm or more and then broke like rubber, the cosmetic was considered to be stringy.

[0055] [Table 3]

[0056] Example 15 (oil-based serum mascara for eyebrows) Microcrystalline wax 1 *1 20%, Synthetic Wax 1 *4 1% Trimethylsiloxysilicate 1 *8 33%, Dextrin palmitate 3%, Dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) *15 2%, Isostearic acid (Isostearic acid EX, manufactured by Kokyu Alcohol Kogyo Co., Ltd.) 1%, Olive fruit oil (CroPure OL-LQ-(JP), Croda Japan) 1%, Diisostearyl malate (Cosmol 222, manufactured by Nisshin Oillio Group) 1%, Mica (mica powder SA-310, manufactured by Yamaguchi Mica Co., Ltd.) 1%, Isododecane *9 remainder Phenoxyethanol 0.6%

[0057] The oily eyebrow serum mascara of Example 15 had threadability, gave the eyelashes a feeling of separateness, length, and luster immediately after application, and was resistant to clumping when applied multiple times.

[0058] Example 16 (Oily based mascara for eyelashes) Microcrystalline wax 1 *1 20% Synthetic Wax 1 *4 1.0% Trimethylsiloxysilicate 1 *8 33% Dextrin palmitate 5% Dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) *15 2% Synthetic Fluorophlogopite (PDM-1000, manufactured by Topy Industries) 1%, Black iron oxide (TAROX synthetic iron oxide BL-100P, manufactured by Titanium Industries Co., Ltd.) 0.5%, Yellow iron oxide (TAROX synthetic iron oxide LL-100P, manufactured by Titanium Industries Co., Ltd.) 2% Bengala (TAROX synthetic iron oxide R-516P, manufactured by Titanium Industries Co., Ltd.) 1%, 5% of red iron oxide-coated mica titanium (CLOISONNE GOLD, manufactured by BASF SE), Titanium oxide (Tipake CR-50 COSMETIC GRADE, manufactured by Ishihara Sangyo Kaisha) 3%, Olive fruit oil (CroPure OL-LQ-(JP), Croda Japan) 1%, Isostearic acid (Isostearic acid EX, manufactured by Kokyu Alcohol Kogyo Co., Ltd.) 2%, Nylon-6 *11 1% Isododecane *9 remainder Phenoxyethanol 0.6%

[0059] The oily eyelash mascara of Example 16 had threadability, gave the eyelashes a feeling of separateness, length, and gloss immediately after application, and was resistant to clumping when applied multiple times.

Claims

1. The following components (A) and (B): (A) 13 to 33% by mass of microcrystalline wax having a melting point of 85°C or less, (B) 10 to 25% by mass of trimethylsiloxysilicate having a weight average molecular weight of 5,500 or more, (C) Volatile liquid oil wherein the mass ratio (B) / (A) of the component (B) to the component (A) is 0.5 to 2.

2. 2. The oily cosmetic for eyelashes according to claim 1, wherein the content of component (C) is 25 to 65% by mass.

3. 3. The oily cosmetic for eyelashes according to claim 1, wherein the total content of waxes including component (A) is 15% by mass or more and 40% by mass or less.

4. 3. The oily cosmetic for eyelashes according to claim 1, wherein the mass ratio of component (A) to the total wax content, (A) / (total wax amount), is 0.5 or more.

5. 3. The oily eyelash cosmetic according to claim 1, further comprising a component (D) dextrin fatty acid ester.

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