Oil-based stick cosmetic

Abstract

One technical solution of the present invention relates to an oily stick cosmetic. The oily stick cosmetic contains (A) partially hydrogenated jojoba ester, (B) sumac wax, (C) higher fatty acid, and (D) dimer acid ester.

Description

Technical Field

[0001] The present invention relates to an oil-based stick cosmetic. Background Art

[0002] As the core material of eyebrow pencils, eyeliner pencils, lip liners, etc., an oil-based stick cosmetic is used. The oil-based stick cosmetic is generally obtained by extrusion molding or casting molding, and an oil agent is blended in order to be able to be molded into a desired core shape. As an oil agent suitable for molding, Rhus Succedanea Fruit Cera, higher fatty acids, etc. are used in many oil-based stick cosmetics (for example, Patent Document 1 below, etc.).

[0003] Patent Document 1: Japanese Patent Publication No. 6-99284 Summary of the Invention

[0004] In the oil-based stick cosmetic blended with the above oil agent, a so-called blooming phenomenon in which white crystals appear on the surface over time easily occurs. The cosmetic with the blooming phenomenon not only has a damaged appearance, but also the usability such as the ease of drawing, where it is not easy to feel a scratching sensation during drawing, also deteriorates. On the other hand, for an oil-based stick cosmetic, it is also required to have storage stability in which the oil component is not easily exuded even at high temperatures, and strength such that cracks or defects are not easily generated due to impacts such as dropping.

[0005] An object of the present invention is to provide an oil-based stick cosmetic that is not prone to blooming and can have sufficient strength, storage stability, and usability at the same time.

[0006] In order to solve the above problems, the present invention provides an oil-based stick cosmetic containing (A) partially hydrogenated jojoba ester, (B) Rhus Succedanea Fruit Cera, (C) higher fatty acid, and (D) dimer acid ester.

[0007] The oil-based stick cosmetic of the present invention, by containing the above components, is not prone to blooming and can have sufficient strength, storage stability, and usability at the same time.

[0008] From the viewpoints of suppressing blooming and usability, the melting point of the above component (A) is preferably 45 to 55°C.

[0009] From the viewpoints of suppressing blooming and ensuring strength, the total content of the above component (A) and the above component (D) is preferably 4 to 10% by mass based on the total amount of the oil-based stick cosmetic.

[0010] From the viewpoint of suppressing blooming, the mass ratio of the above component (A) to the above component (D) [(A) component / (D) component] is preferably 1 / 6 to 1 / 1.

[0011] From the viewpoint of usability, the oily stick cosmetic preferably further contains hydrogenated castor oil, and the total content of the above component (B) and the above component (C) is preferably 60 to 74% by mass based on the total content of hydrogenated castor oil, the above component (B), and the above component (C).

[0012] According to the present invention, an oily stick cosmetic that is less likely to develop frosting and can have sufficient strength, storage stability, and usability can be provided. Detailed Description

[0013] [Oily Stick Cosmetic]

[0014] The oily stick cosmetic of the present embodiment contains (A) partially hydrogenated jojoba ester (sometimes referred to as component (A)), (B) sumac wax (sometimes referred to as component (B)), (C) higher fatty acid (sometimes referred to as component (C)), and (D) dimer acid ester (sometimes referred to as component (D)). The oily stick cosmetic of the present embodiment may contain a powder component or may further contain an oily component other than the above.

[0015] <(A) Partially Hydrogenated Jojoba Ester>

[0016] As the partially hydrogenated jojoba ester, an ester oil obtained by hydrogenating jojoba oil can be used. For example, commercially available products such as FLORAESTERS20, FLORAESTERS30, and FLORAESTERS60 (manufactured by INTERNATIONAL FLORATECHNOLOGIES, trade names) can be used.

[0017] In the oily stick cosmetic of the present embodiment, from the viewpoints of the property of being less likely to develop frosting and usability, the melting point of component (A) is preferably 45 to 55°C, more preferably 50 to 55°C. It should be noted that the melting point of component (A) is measured by the following method.

[0018] Weigh approximately 5 mg of the sample and place it in an aluminum sample dish. Attach an aluminum lid to the above-mentioned sample dish, and then set it in a differential scanning calorimeter "DSC7020" (manufactured by Hitachi High-Tech Science Corporation, trade name). Using an electric cooling device "Polyscience" (manufactured by Hitachi High-Tech Science Corporation, trade name), under the condition of a nitrogen flow rate of 30 - 35 mL / min, keep the sample and the standard sample at -10°C for 1 minute, then increase the temperature from 0°C to 120°C at a heating rate of 10°C / min, then decrease the temperature from 120°C to -10°C at a cooling rate of -10°C / min, and keep it at -10°C for 5 minutes, and then increase the temperature from -10°C to 120°C again at a heating rate of 10°C / min. Thus, obtain the melting endothermic curve. Take the peak temperature in the melting endothermic curve during the second heating at this time as the melting point.

[0019] From the viewpoints of suppressing frosting, usability, and storage stability, the content of component (A) in the oily stick cosmetic of the present embodiment is preferably 0.1 - 5% by mass, more preferably 0.5 - 4.0% by mass, further preferably 0.9 - 3.5% by mass, still more preferably 1.0 - 3.0% by mass, and particularly preferably 1.2 - 2.5% by mass, based on the total amount of the oily stick cosmetic.

[0020] In addition, from the viewpoint of suppressing frosting, the content of component (A) is preferably 1 - 8% by mass, more preferably 2 - 5% by mass, based on the total amount of the oily components contained in the oily stick cosmetic.

[0021] <(B) Rhus succedanea wax>

[0022] Rhus succedanea wax can be used without particular limitation as long as it is a product commonly used in cosmetics.

[0023] From the viewpoint of moldability, the content of component (B) in the oily stick cosmetic of the present embodiment is preferably 5 - 15% by mass, more preferably 8 - 12% by mass, based on the total amount of the oily stick cosmetic.

[0024] <(C) Higher fatty acid>

[0025] Higher fatty acids can use fatty acids having 12 or more carbon atoms in the aliphatic hydrocarbon group (hereinafter simply referred to as the carbon number). Examples of higher fatty acids include myristic acid, palmitic acid, stearic acid, lauric acid, Lanolin Acid, behenic acid, etc.

[0026] From the viewpoints of ease of drawing, especially non-stickiness and skin touch comfort, the oily stick cosmetic of the present embodiment preferably contains a fatty acid having 20 or less carbon atoms, more preferably contains a fatty acid having 14 to 20 carbon atoms, and still more preferably contains at least one of myristic acid, palmitic acid, and stearic acid.

[0027] From the viewpoints of moldability and ease of drawing, the content of the component (C) in the oily stick cosmetic of the present embodiment is preferably 10 to 40% by mass, more preferably 12 to 20% by mass, based on the total amount of the oily stick cosmetic.

[0028] In addition, from the viewpoint of skin touch comfort, the content ratio of the fatty acid having 14 to 20 carbon atoms in the higher fatty acid having 12 or more carbon atoms contained in the oily stick cosmetic of the present embodiment is preferably 50 to 100% by mass, more preferably 70 to 100% by mass.

[0029] Furthermore, the mass ratio of the component (B) to the component (C) [(B) component / (C) component] is preferably 0.25 to 1.4, and more preferably 0.4 to 0.75 to 0.5 to 0.65 from the viewpoint of ease of drawing.

[0030] In addition, from the viewpoint of usability, the oily stick cosmetic further contains hydrogenated castor oil, and the total content of the above-mentioned component (B) and the above-mentioned component (C) is preferably 60 to 74% by mass, more preferably 65 to 72% by mass, based on the total content of hydrogenated castor oil, the above-mentioned component (B), and the above-mentioned component (C).

[0031] <(D) Dimer acid ester>

[0032] As the dimer acid ester, a dimer acid ester obtained by the polymerization of two molecules of an unsaturated fatty acid can be used. Examples of the unsaturated fatty acid include linoleic acid, linolenic acid, oleic acid, etc. In addition, examples of the ester moiety of the dimer acid include higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, dodecyl alcohol, and linolenyl alcohol, dimer alcohols obtained by the polymerization of two molecules of unsaturated alcohols such as dimer dilinoleyl alcohol, products derivable from phytosterols, etc., and castor oil. Specifically, for example, bis(behenyl / isostearyl / phytosteryl) dimer dilinoleyl dimer dilinoleate, bis(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleyl dimer dilinoleate, (phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, bis-stearyl dimer dilinoleyl dimer dilinoleate, hydrogenated castor oil dimer dilinoleate, etc. can be mentioned.

[0033] Regarding the dimer acid ester, as long as it is a product commonly used in cosmetics, it can be used without particular limitation. As bis(behenyl / isostearyl / phytosteryl) dimer dilinoleyl dimer dilinoleate, "Plandool-G" (manufactured by Nippon Fine Chemical Co., Ltd., trade name) can be used; as (phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, "Plandool-H" (manufactured by Nippon Fine Chemical Co., Ltd., trade name) can be used; as bis-stearyl dimer dilinoleyl dimer dilinoleate, "LUSPLAN DA-DD-IS" (manufactured by Nippon Fine Chemical Co., Ltd., trade name) can be used; as hydrogenated castor oil dimer dilinoleate, "Risokasuta DA-L" (manufactured by Kao Alcohol Industries Co., Ltd., trade name) and other commercially available products can be used.

[0034] The dimer acid ester is preferably pasty at 25°C.

[0035] From the viewpoint of the adhesiveness to the skin, the content of the component (D) in the oily stick cosmetic of the present embodiment is preferably 1 to 8% by mass, more preferably 2 to 7% by mass, and still more preferably 2.5 to 4.8% by mass based on the total amount of the oily stick cosmetic.

[0036] In addition, from the viewpoints of suppressing frosting and ensuring strength, the total content of the component (A) and the component (D) is preferably 4 to 10% by mass, more preferably 5 to 8% by mass based on the total amount of the oily stick cosmetic.

[0037] In addition, from the viewpoint of suppressing frosting, the mass ratio of the component (A) to the component (D) [(component (A) / component (D))] is preferably 1 / 6 to 1 / 1, more preferably 1 / 4 to 1 / 2.

[0038] <Other oily components>

[0039] In the oily stick cosmetic of the present embodiment, as the oily components other than the above components (A) to (D), as long as they are oil agents commonly used in cosmetics, there is no particular limitation, and solid oils and oil agents other than solid oils can be used. Other oily components can be used alone or in combination of two or more.

[0040] Examples of the solid oil include hydrocarbons such as paraffin, microcrystalline wax, and polyethylene, plant-derived oils such as hydrogenated castor oil (hydrogenated ricinoleic oil), hydrogenated jojoba oil, carnauba wax, and rice bran wax, esters such as glyceryl tribehenate and cholesterol fatty acid ester, higher alcohols such as stearyl alcohol and behenyl alcohol, silicone oils such as acrylic acid-modified silicone, and sugar fatty acid esters such as dextrin palmitate and stearyl inulin. One of them can be used, or two or more of them can be used in combination.

[0041] As the oil agent other than solid oil, paste oil or liquid oil can be used. Examples of the paste oil include petrolatum, dipentaerythrityl hexa-hydroxystearate / stearate / rosinate, dipentaerythrityl tetra-hydroxystearate / isostearate, dipentaerythrityl pentaisostearate, dipentaerythrityl hexa-hydroxystearate, glyceryl tri-caprylate / caprate / myristate / stearate, hydrogenated castor oil isostearate, phytosteryl oleate, sucrose hexa-oleate / palmitate / stearate, phytosteryl macadamiate, bis-diglyceryl polyacyladipate-2, etc.

[0042] Examples of the liquid oil include ester oils such as cetyl ethylhexanoate, ethylhexyl palmitate, triethylhexanoin, isotridecyl isononanoate, isostearyl isostearate, neopentyl glycol diethylhexanoate, caprylic / capric triglyceride, neopentyl glycol dicaprate, propanediol diisostearate, trimethylolpropane triethylhexanoate, octyldodecyl myristate, octyldodecyl stearoyl stearate, diisostearyl malate, polyglyceryl triisostearate, dipentaerythrityl pentaisostearate, trimethylolpropane triisostearate; silicone oils such as dimethicone and methylphenyl polysiloxane; hydrocarbon oils such as paraffin, squalane, olefin oligomer, and hydrogenated polyisobutene; vegetable oils such as sunflower oil, jojoba oil, olive oil, and castor oil; and higher alcohols such as isostearyl alcohol, octyldodecanol, and oleyl alcohol.

[0043] From the viewpoints of maintaining strength and improving stability, the oily stick cosmetic of the present embodiment preferably contains hydrogenated castor oil. The content of hydrogenated castor oil is preferably 8 to 20% by mass, more preferably 10 to 15% by mass, and further preferably 10.5 to 12% by mass based on the total amount of the oily stick cosmetic.

[0044] In the oily stick cosmetic of the present embodiment, the content of ester oils other than the component (A) and the component (D) (hereinafter also referred to as "other ester oils") is preferably 1 to 10% by mass, more preferably 3 to 9% by mass based on the total amount of the oily stick cosmetic.

[0045] As the other ester oils, products having a viscosity of 5 to 30000 mPa·s at 25°C can be used. The other ester oils can be used alone or in combination of two or more.

[0046] It should be noted that the viscosity at 25°C refers to the value measured using a B-type viscometer at a measurement temperature of 25°C and a rotation speed of 12 rpm.

[0047] As the other ester oils, a high-viscosity ester oil having a viscosity of 10000 to 30000 mPa·s at 25°C and a low-viscosity ester oil having a viscosity of 5 to 500 mPa·s at 25°C can be used in combination.

[0048] In the oily stick cosmetic of the present embodiment, the content of the oily component is preferably 35 to 65% by mass, more preferably 46 to 60% by mass, and still more preferably 48 to 58% by mass based on the total amount of the oily stick cosmetic.

[0049] <Powder component>

[0050] As the powder component, as long as it is a powder commonly used in cosmetics, it can be used without particular limitation, and examples thereof include extender pigments, white pigments, and coloring pigments. There is no particular limitation on the shape of the powder, and it can have shapes such as spherical, plate-like, and needle-like, and particle structures such as smoky, fine particles, and pigment-grade particle sizes, porous and non-porous.

[0051] Specifically, extender pigments such as mica, synthetic mica, sericite, talc, kaolin, silicon carbide, barium sulfate, bentonite, montmorillonite, alumina, silica, magnesia, zirconia, magnesium carbonate, calcium carbonate, chromium oxide, aluminum hydroxide, magnesium hydroxide, etc. can be cited; ultraviolet ray scattering agents such as fine particle titanium oxide, fine particle zinc oxide, etc.; organic powders such as nylon powder, polymethyl methacrylate powder, methyl methacrylate / acrylonitrile copolymer powder, methacrylate / vinylidene chloride copolymer, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polyurethane powder, wool powder, silk powder, cellulose powder, N-acyllysine powder, etc.; composite powders such as fine particle titanium oxide-coated mica titanate, fine particle titanium oxide-coated nylon, barium sulfate-coated mica titanate, titanium oxide-containing silica, zinc oxide-containing silica, etc.; metal soaps such as magnesium stearate, zinc myristate, aluminum stearate, calcium stearate, etc.

[0052] As coloring pigments, inorganic coloring pigments such as red lead, iron oxide yellow, iron oxide black, cobalt oxide, chromium oxide, ultramarine, Prussian blue, titanium oxide, zinc oxide, etc. can be cited; organic coloring pigments such as Red No. 228, Red No. 226, Blue No. 404, Red No. 202, Aluminum Lake Yellow No. 4, etc.; pearlescent pigments such as mica titanate, fine particle titanium oxide-coated mica titanate, barium sulfate-coated mica titanate, fish scale foil, pearl white, aluminum flakes, etc.; natural pigments such as carmine, safflower, etc.

[0053] From the viewpoints of color development and adhesion, these powder components are preferably hydrophobic-treated powders. As the hydrophobic treatment, treatments with higher fatty acids, metal soaps, oils and fats, waxes, silicone compounds, fluorine compounds, surfactants, dextrin fatty acid esters, etc. can be cited.

[0054] The powder components can be used singly or in combination of two or more.

[0055] In the oil-based stick cosmetic of the present embodiment, the content of the powder component is preferably 35 to 65% by mass, more preferably 40 to 54% by mass, still more preferably 42 to 52% by mass based on the total amount of the oil-based stick cosmetic.

[0056] In the oil-based stick cosmetic of the present embodiment, in addition to the above components, components used in ordinary cosmetics may also be contained, such as surfactants, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, ultraviolet absorbers, ultraviolet scatterers, chelating agents, anti-inflammatory agents, moisturizers, and the like.

[0057] The oil-based stick cosmetic of the present embodiment can be manufactured, for example, according to the following steps. Mix the oil-based components, and mix other components as needed, and then heat and melt. Mix the powder components in the obtained melt, and use a three-roll mill or a mixer to uniformly disperse the mixture. Then, using an extrusion molding machine, a mold, etc., the above mixture (cosmetic base material) is molded, whereby an oil-based stick cosmetic can be obtained.

[0058] Although the shape of the oil-based stick cosmetic is not particularly limited, the shape of the cross-section orthogonal to the long axis direction of the oil-based stick cosmetic can be, for example, circular, elliptical, triangular, rectangular, polygonal (the number of corners is 5 or more). The oil-based stick cosmetic of the present embodiment can balance the suppression of frosting, storage stability, usability, and strength, so even when it has a slender shape or a thin shape, it can be used well and sufficiently.

[0059] When the cross-sectional shape is circular or elliptical, the diameter or the shortest diameter passing through the center of the ellipse can be 0.5 mm or more and 7 mm or less, the lower limit can be 0.7 mm, 1 mm, or 1.3 mm, and the upper limit can be 5 mm, 3 mm, 2 mm, or 1.5 mm.

[0060] When the cross-sectional shape is triangular, the height can be 0.5 mm or more and 5 mm or less, the lower limit can be 0.8 mm, 1 mm, or 1.5 mm, and the upper limit can be 4 mm, 3 mm, or 2 mm.

[0061] When the cross-sectional shape is rectangular, the thickness in the short-axis direction can be 0.4 mm or more and 2.0 mm or less. In addition, the lower limit of the thickness can be 0.6 mm, 0.7 mm, or 0.8 mm, and the upper limit of the thickness can be 0.9 mm or 1.5 mm.

[0062] The oil-based stick cosmetic of the present embodiment is suitable for use as an eyebrow pencil, an eyeliner, a lip liner, a colored eyeliner, a concealer, etc. In addition, the oil-based stick cosmetic of the present embodiment can be used for pencil-type cosmetic products that send out stick-shaped cosmetics and then use them.

[0063] [Examples]

[0064] Hereinafter, the present invention will be further described in detail using examples. However, the technical scope of the present invention is not limited thereto. In addition, the values in the table represent the content (mass%) based on the total amount of the cosmetic base material.

[0065] Before introducing the examples, the evaluation methods used in each example will be described first.

[0066] <Frosting>

[0067] The formed stick-shaped cosmetic is stored for 4 weeks under each temperature condition (-5°C, 5°C, 25°C, 40°C, 50°C, 5 - 40°C cycle). The state of the cosmetic after storage is visually observed, and frosting is evaluated according to the following judgment criteria.

[0068] [Judgment Criteria]

[0069] ○: No frosting is observed.

[0070] △: Frosting is observed.

[0071] ×: Obvious frosting is observed.

[0072] <Evaluation of Usability>

[0073] Ten members of a cosmetic evaluation panel use the oily stick-shaped cosmetics of the examples and comparative examples, respectively, using the cosmetics stored at 5°C for 4 weeks and the cosmetics before storage, and evaluate the usability from the perspectives of ease of drawing (without scratching), non-stickiness, and skin touch comfort. In addition, when evaluating the usability, a 5-grade evaluation is carried out according to the following evaluation criteria, and each sample is scored. Then, according to the following judgment criteria, the average score of all members of the entire group is judged.

[0074] [Score: Evaluation Criteria]

[0075] 5 points: Very good

[0076] 4 points: Good

[0077] 3 points: Ordinary

[0078] 2 points: Slightly poor

[0079] 1 point: Poor

[0080] [Judgment Criteria (Average Score of Scores)]

[0081] ◎: 4 or more

[0082] ○: 3 or more and less than 4

[0083] △: 2 or more and less than 3

[0084] ×: Less than 2

[0085] <Evaluation of storage stability>

[0086] The formed rod-shaped cosmetic is stored at 50°C for 4 weeks. Observe the state of the cosmetic after storage with the eyes, and evaluate the storage stability according to the following judgment criteria. The evaluation is carried out under the condition of N = 2. When the judgments are different, the judgment result of the inferior party is adopted.

[0087] [Judgment criteria]

[0088] ○: No oil seepage is found.

[0089] ×: Oil seepage is found.

[0090] <Evaluation of dropping strength>

[0091] After taking out the sample of the oily rod-shaped cosmetic stored at 5°C for 1 week, immediately drop the sample 10 times from a height of 70 cm onto the plastic floor tile in a direction parallel to the floor, and check whether the core material is bent. The evaluation is carried out under the condition of N = 5. If the core materials of all samples are not bent, it is ○; if the core material of even 1 sample is bent, it is ×.

[0092] <Evaluation of bending strength>

[0093] The formed rod-shaped cosmetic is stored at each temperature condition (-5°C, 5°C, 25°C, 40°C, 50°C, 5 - 40°C cycle) for 4 weeks. For the rod-shaped cosmetic before and after storage, at 25°C and at the center of the core material supported with a distance between fulcrums of 20 mm, apply a load at a speed of 2 mm / min, and then measure the breaking load at this time using a rheometer (manufactured by Fudo Kogyo Co., Ltd.). The measurement is carried out under the condition of N = 5, and the average value is obtained. Take the breaking load of the rod-shaped cosmetic before storage as the initial value, and evaluate the bending strength according to the following judgment criteria based on the difference between the breaking load of the rod-shaped cosmetic after storage and the above initial value.

[0094] [Judgment criteria]

[0095] ○: The difference from the initial value is less than ±20%.

[0096] △: The difference from the initial value is more than ±20% and less than 30%.

[0097] ×: The difference from the initial value is more than ±30%.

[0098] <Moldability>

[0099] Use an extrusion molding machine to mold it into a cylindrical shape with a diameter of 1.5 mm, and check and confirm its state.

[0100] ○: No problem, can be formed.

[0101] ×: Cannot be formed (obvious bending, scar, kink)

[0102] (Examples 1 - 22 and Comparative Examples 1 - 4)

[0103] Using the following manufacturing method, an oil-based stick cosmetic (eyebrow pencil) with the composition (mass%) shown in Tables 1 - 3 was prepared and the above evaluation was carried out. The evaluation results were recorded in Tables 1 - 3 together.

[0104] <Manufacturing method>

[0105] In a mixture of oil components melted at 80 - 100°C, the powder components were mixed and evenly dispersed using 3 rollers to obtain a cosmetic base material. Using an extrusion molding machine, the obtained cosmetic base material was molded into a cylindrical shape with a diameter of 1.5 mm.

[0106] [Table 1]

[0107]

[0108] [Table 2]

[0109]

[0110] [Table 3]

[0111]

[0112] [Table 4]

[0113]

[0114] [Table 5]

[0115]

[0116] [Table 6]

[0117]

[0118] In Tables 1 - 3, the details of each raw material are as described below.

[0119] Partially hydrogenated jojoba ester A: "FLORAESTERS30" (manufactured by INTERNATIONAL FLORA TECHNOLOGIES, trade name) (melting point: 52.6°C);

[0120] Partially hydrogenated jojoba ester B: "FLORAESTERS20" (manufactured by INTERNATIONAL FLORA TECHNOLOGIES, trade name) (melting point: 48.3 °C);

[0121] Partially hydrogenated jojoba ester C: "FLORAESTERS60" (manufactured by INTERNATIONAL FLORA TECHNOLOGIES, trade name) (melting point: 58.9 °C);

[0122] Partially hydrogenated jojoba oil: "FLORAESTERS70" (manufactured by INTERNATIONAL FLORA TECHNOLOGIES, trade name) (melting point: 70.3 °C);

[0123] Dimer acid ester A: "Plandool-H" (manufactured by Nippon Fine Chemical Co., Ltd., trade name, (phytosterol / isostearyl alcohol / cetyl alcohol / stearyl alcohol / behenyl alcohol) dimeric linoleate);

[0124] Dimer polyester ester B: "Plandool-G" (manufactured by Nippon Fine Chemical Co., Ltd., trade name, bis(behenyl alcohol / isostearyl alcohol / phytosterol) dilinoleyl dimeric linoleate);

[0125] Polyglycerol-2 triisostearate: Viscosity at 25 °C is 22500 mPa·s;

[0126] Trimethylolpropane triisostearate: Viscosity at 25 °C is 180 mPa·s;

[0127] Ethylhexyl palmitate: Viscosity at 25 °C is 11 mPa·s.

[0128] In addition, the above melting points are measured by the following method.

[0129] Weigh approximately 5 mg of the sample and place it in an aluminum sample dish. Attach an aluminum lid to the above sample dish and then set it in a differential scanning calorimeter "DSC7020" (manufactured by Hitachi High-Tech Science Corporation, trade name). Using an electric cooling device "Polyscience" (manufactured by Hitachi High-Tech Science Corporation, trade name), under the condition of a nitrogen flow rate of 30 - 35 mL / min, after maintaining the sample and the standard sample at -10°C for 1 minute, increase the temperature from 0°C to 120°C at a heating rate of 10°C / min, then decrease the temperature from 120°C to -10°C at a cooling rate of -10°C / min, and after maintaining at -10°C for 5 minutes, increase the temperature from -10°C to 120°C again at a heating rate of 10°C / min, thereby obtaining an endothermic melting curve. Take the peak temperature in the endothermic melting curve during the second heating at this time as the melting point.

[0130] As shown in Tables 4 - 6, it was found that the eyebrow pencils of Examples 1 - 22 could suppress frosting under various temperature conditions from -5°C to 50°C and under the cycling conditions from 5°C to 40°C, while having sufficient strength, storage stability, and usability. For the eyebrow pencils of Examples 1 - 22, it was confirmed that they had the ability to suppress frosting especially within the actual use temperature range (5°C - 25°C) and storage stability at high temperatures. In addition, it was found that the eyebrow pencils of Examples 1 - 22 could maintain good usability even after storage at 5°C and could maintain stable bending strength within a wide temperature range.

[0131] (Example 23: Lip Liner)

[0132] (Mixing Ratio (mass%))

[0133]

[0134]

[0135] The details of the above components are the same as those of the products already introduced before.

[0136] <Manufacturing Method>

[0137] Stir the oily components at 80 - 100°C and mix them with the mixed powder components to obtain a cosmetic base material. Use an extrusion molding machine to mold the obtained cosmetic base material into a cylindrical shape with a diameter of 3 mm.

[0138] <Evaluation>

[0139] For the obtained lip liner, the same evaluation as introduced above was also carried out. The evaluation results show that for frosting, the evaluation under all storage conditions is "○"; for usability, the evaluation is "◎" both initially and after storage; the evaluation of storage stability is "○"; the evaluation of dropping strength is "○"; for bending strength, the initial value is 0.15 N, and the evaluation under all storage conditions is "○"; the evaluation of formability is "○".

Claims

1. An oil-based stick cosmetic containing (A) partially hydrogenated jojoba ester, (B) sumac wax, (C) higher fatty acid, and (D) dimer acid ester, The content of the component (A) is 0.1 to 5% by mass based on the total amount of the oil-based stick cosmetic, The content of the component (B) is 5 to 15% by mass based on the total amount of the oil-based stick cosmetic, The content of the component (C) is 10 to 40% by mass based on the total amount of the oil-based stick cosmetic, The content of the component (D) is 2.5 to 5.5% by mass based on the total amount of the oil-based stick cosmetic, The total content of the component (A) and the component (D) is 4 to 10% by mass based on the total amount of the oil-based stick cosmetic, The oil-based stick cosmetic further contains hydrogenated castor oil, The content of the hydrogenated castor oil is 8 to 20% by mass based on the total amount of the oil-based stick cosmetic, The melting point of the component (A) is 45 to 58.9 °C.

2. The oil-based stick cosmetic according to claim 1, wherein The melting point of the component (A) is 45 to 55 °C.

3. The oil-based stick cosmetic according to claim 1 or 2, wherein The total content of the component (A) and the component (D) is 5 to 8% by mass based on the total amount of the oil-based stick cosmetic.

4. The oil-based stick cosmetic according to claim 1 or 2, wherein The mass ratio of the component (A) to the component (D) [(A) component / (D) component] is 1 / 6 to 1 / 1.

5. The oil-based stick cosmetic according to claim 1 or 2, wherein The total content of the component (B) and the component (C) is 60 to 74% by mass based on the total content of the hydrogenated castor oil, the component (B), and the component (C).

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