Oily solid cosmetic

Abstract

To provide an oily solid cosmetic which has excellent emollient properties even though a powder can be blended in a high concentration while maintaining excellent filling property, imparts no skin tense feeling after application because of having excellent makeup durability without using a film-forming agent or a volatile oil and can be used in a variety of containers because of requiring no airtight container.SOLUTION: There is provided an oily solid cosmetic which comprises the following components (A) to (F), wherein the mass ratio of the mass of a silicone applied to the component (A) as a treatment agent to the mass of an amino acid applied to the component (B) as a treatment agent is in the range of 0.5 to 2.0 and the ratio of titanium dioxide and / or zinc oxide in the whole cosmetic is 20 to 70 mass%: (A) a silicone-treated powder, (B) an amino-acid-treated powder, (C) 3.0 to 10 mass% of a solid wax having a melting point of 75 to 120°C, (D) 10 to 40 mass% of a liquid oil agent having an IOB value of less than 0.3, (E) 0.2 to 2.0 mass% of a lipophilic surfactant and 1.0 to 10 mass% of a spherical powder having an average particle diameter of 1.0 to 30 μm and an oil absorption of less than 100 ml / 100 g.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an oil-based solid cosmetic preparation with high covering power. More specifically, the present invention relates to an oil-based solid cosmetic preparation with excellent packing ability even when a large amount of powder is blended, and excellent cosmetic durability even without the use of a film-forming agent or a volatile oil agent. [Background technology]

[0002] Conventionally, oil-based solid cosmetics have been excellent in coloring ability, and thus, by taking advantage of this characteristic, oil-based solid cosmetics with high covering power have been developed. However, as described in Patent Document 1, in order to maintain a cosmetic film with high coverage, it is necessary to incorporate a film-forming agent and a volatile oil, which poses issues such as limiting the shape of the container to one that is highly airtight and leaving a tight feeling on the skin after application.

[0003] Furthermore, when the amount of powder is increased in order to improve the covering power of an oil-based solid cosmetic, there is a problem that the filling property deteriorates. As for this problem, as described in Patent Document 2, a solution is shown in which silica and a dextrin fatty acid ester are used in combination to obtain an oil-based solid cosmetic that maintains good filling property and has a good feel in use, but because a large amount of silica is used, there is a problem that a strong dry feeling is felt after application. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-102251 A [Patent Document 2] JP 2003-300807 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in view of the above-mentioned background art, and aims to provide an oil-based solid cosmetic which has excellent emollient properties while maintaining excellent filling properties, can be blended with a high amount of powder, and has excellent cosmetic durability without using a film-forming agent or a volatile oil agent, so that the skin does not feel tight after application, and which does not require the container into which it is filled to be airtight, allowing for a wide variety of containers into which it is filled. [Means for solving the problem]

[0006] As a result of intensive research by the inventors to solve the above problems, they discovered that the above problems can be solved by combining a silicone-treated powder and an amino acid-treated powder in a ratio within a specific range, and combining this with a liquid oil having an IOB value of less than 0.3, a lipophilic surfactant, and a specific spherical powder in ratios within specific ranges.

[0007] The present invention provides an oil-based solid cosmetic preparation containing the following components (A) to (F), characterized in that the mass ratio of the silicone applied as a treatment agent to the component (A) to the mass of the amino acid applied as a treatment agent to the component (B) is in the range of 0.5 to 2.0, and the proportion of titanium oxide and / or zinc oxide in the entire cosmetic preparation is 20 to 70 mass%. (A) Silicone-treated powder (B) Amino acid-treated powder (C) Solid wax having a melting point of 75°C to 120°C: 3.0 to 10% by mass (D) Liquid oil with an IOB value of less than 0.3: 10 to 40% by mass (E) Lipophilic surfactant 0.2 to 2.0% by mass (F) 1.0 to 10% by mass of spherical powder having an average particle size of 1.0 to 30 μm and an oil absorption of less than 100 ml / 100 g

[0008] The oil-based solid cosmetic preferably contains, as the component (A), titanium oxide and / or zinc oxide that has been subjected to a silicone treatment.

[0009] The oily solid cosmetic preferably contains, as the component (B), titanium oxide and / or zinc oxide that has been treated with an amino acid. Effect of the Invention

[0010] The oil-based solid cosmetic of the present invention has high covering power and cosmetic durability, while causing little tightness or dryness after application, and also has high flexibility in terms of filling properties and filling containers. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention will be described in detail below. In this specification, the symbol "to" means a range including the numerical values ​​before and after it.

[0012] The oil-based solid cosmetic preparation of the present invention has a good feel when used due to the inclusion of the silicone-treated powder of component (A), and furthermore, by combining the amino acid-treated powder of component (B) with a liquid oil having an IOB value of less than 0.3 of component (D), good packing properties can be maintained even when a high amount of powder, including component (A), is blended. In addition, the oil-based solid cosmetic of the present invention can have a high coverage because it is possible to increase the amount of powder such as components (A) and (B). The oil-based solid cosmetic of the present invention also has excellent makeup durability, and the skin does not feel tight or dry after application. Each component used in the present invention will be described in detail below.

[0013] The base powder for the silicone-treated powder of component (A) used in the present invention is not particularly limited as long as it is a powder used in cosmetics, and may contain, for example, one or more types selected from titanium oxide, zinc oxide, iron oxide, talc, kaolin, mica, sericite, muscovite, biotite, phlogopite, synthetic mica, synthetic fluorophlogopite, and the like. Among these, from the viewpoint of enhancing the covering power, it is preferable to use one or two types of powder consisting of at least titanium oxide and / or zinc oxide in component (A).

[0014] The silicone treatment agent of component (A) used in the present invention is not particularly limited as long as it is one that is generally used as a treatment agent for cosmetics, and may contain, for example, one or more types selected from methicone, dimethicone, hydrogen dimethicone, amino-modified silicone, etc. The base powder may be silicone-treated by a conventional method.

[0015] The base powder of the powder that has been subjected to amino acid treatment as component (B) used in the present invention is not particularly limited as long as it is a powder that can be used as a cosmetic, and may contain, for example, one or more types selected from titanium oxide, zinc oxide, iron oxide, talc, kaolin, mica, sericite, muscovite, biotite, phlogopite, synthetic mica, synthetic fluorophlogopite, etc. Among these, from the viewpoint of enhancing the covering power, it is preferable to use one or two types of powder consisting of at least titanium oxide and / or zinc oxide in component (B).

[0016] The amino acid treatment agent of component (B) used in the present invention is not particularly limited as long as it is generally used as a treatment agent for cosmetics, and may contain, for example, one or more selected from disodium N-stearoyl-L-glutamate, lipoamino acids, disodium cocoyl glutamate, etc. The base powder may be treated with an amino acid by a conventional method.

[0017] In the present invention, the mass ratio of the silicone applied as a treating agent to the component (A) to the mass of the amino acid applied as a treating agent to the component (B) must be in the range of 0.5 to 2.0. When the total mass of the silicone treating agents used in component (A) is a and the total mass of the amino acid treating agents used in component (B) is b, the mass ratio [a / b] of the total mass a of the silicone treating agents used in component (A) to the total mass b of the amino acid treating agents used in component (B) is, from the viewpoints of powder dispersibility, water repellency, cosmetic durability, adhesion to the skin, and bulk filling ability, 0.5 or more, preferably 0.7 or more, and more preferably 1.0 or more, and is 2.0 or less, preferably 1.8 or less, and more preferably 1.5 or less. Specifically, the mass ratio [a / b] of the total mass a of the silicone treating agent used in component (A) to the total mass b of the amino acid treating agent used in component (B) is 0.5 to 2.0, preferably 0.7 to 1.8, and more preferably 1.0 to 1.5. If [a / b] is less than 0.5, the dispersibility and water repellency of the powder are significantly impaired, whereas if it exceeds 2.0, the cosmetic durability, adhesion to the skin, and bulk filling ability are significantly impaired.

[0018] In the present invention, the content of titanium oxide and / or zinc oxide in the entire oil-based solid cosmetic preparation must be 20 to 70% by mass. In other words, from the viewpoint of exerting high covering power, the content of titanium oxide and / or zinc oxide contained in one or more selected from component (A) and / or component (B) and / or other components is 20 mass % or more, based on the total amount of the oil-based solid cosmetic, and preferably 40 mass % or more, and 70 mass % or less, and more preferably 60 mass % or less. Specifically, the content of titanium oxide and / or zinc oxide contained in one or more selected from component (A) and / or component (B) and / or other components is 20 to 70 mass %, and preferably 40 to 60 mass %. If the content of titanium oxide and / or zinc oxide in one or more selected from component (A) and / or component (B) and / or other components is less than 20% by mass, sufficient covering power cannot be obtained. If it exceeds 70% by mass, filling ability is impaired and pigment aggregation may occur. The titanium oxide and / or zinc oxide contained in the other components may be titanium oxide alone and / or zinc oxide alone.

[0019] From the viewpoint of obtaining good covering power, it is preferable that the average primary particle size of titanium oxide and zinc oxide is 0.1 to 1 μm. Titanium oxide and zinc oxide having an average primary particle size of 0.1 to 1 μm are generally called pigment-grade titanium oxide and zinc oxide, and are used as white pigments. Here, the average primary particle size is the particle size of particles obtained by measuring the long sides of 200 random particles using a transmission electron microscope (TEM) and averaging them.

[0020] From the viewpoint of usability, the content of component (A) in the present invention is preferably 10% by mass or more, more preferably 15% by mass or more, and more preferably 40% by mass or less, based on the total amount of the oil-based solid cosmetic. From the viewpoint of filling property, the content of component (B) in the present invention is preferably 5% by mass or more, more preferably 12% by mass or more, and more preferably 40% by mass or less, based on the total amount of the oil-based solid cosmetic. The contents of component (A) and component (B) in the present invention may be appropriately set depending on the contents of titanium oxide and / or zinc oxide contained in one or more selected from component (A) and / or component (B) and / or other components.

[0021] The component (C) used in the present invention, which is a solid wax having a melting point of 75°C to 120°C, is not particularly limited as long as it is used in cosmetics, and for example, one or more types selected from microcrystalline wax, synthetic wax, paraffin wax, ceresin, carnauba wax, polyethylene, etc. can be used.

[0022] From the viewpoints of good moldability and good finger removability, the content of component (C) in the present invention is 3.0 mass % or more, and preferably 5.0 mass % or more, and 10 mass % or less, and preferably 8.0 mass % or less, based on the total amount of the oil-based solid cosmetic. Specifically, the content of component (C) is 3.0 to 10 mass %, and more preferably 5.0 to 8.0 mass %. If the content of component (C) is less than 3.0% by mass, sufficient moldability as an oil-based solid cosmetic preparation cannot be obtained, and if it exceeds 10% by mass, a good finger-removing feel cannot be obtained, and the sticky feel of the oil cannot be said to be good.

[0023] The liquid oil agent having an IOB value of less than 0.3 (Component (D)) used in the present invention refers to one that is liquid at room temperature (25°C). By combining Components (D) and (B), the bulk does not become excessively heavy even when a high powder content is used, and good filling properties can be maintained. Specific examples of component (D) are not particularly limited as long as they are used in cosmetics, and include, for example, squalane (IOB=0), mineral oil (IOB=0), isostearyl isostearate (IOB=0.09), octyldodecyl myristate (IOB=0.09), ethylhexyl palmitate (IOB=0.13), isotridecyl isononanoate (IOB=0.15), alkyl benzoate (C12-C15) (IOB=0.18), isopropyl alcohol (IOB=0.16), isopropyl alcohol (IOB=0.17), isopropyl alcohol (IOB=0.18), isopropyl alcohol (IOB=0.19), isopropyl alcohol (IOB=0.20), isopropyl alcohol (IOB=0.21), isopropyl alcohol (IOB=0.22), isopropyl alcohol (IOB=0.23), isopropyl alcohol (IOB=0.24), isopropyl alcohol (IOB=0.25), isopropyl alcohol (IOB=0.26), isopropyl alcohol (IOB=0.27), isopropyl alcohol (IOB=0.28), isopropyl alcohol (IOB=0.29), isopropyl alcohol (IOB=0.30), isopropyl alcohol (IOB=0.31), isopropyl alcohol (IOB=0.32), isopropyl alcohol (IOB=0.33), isopropyl alcohol (IOB=0.34), isopropyl alcohol (IOB=0.35), isopropyl alcohol (IOB=0.36), isopropyl alcohol (IOB=0.37), isopropyl alcohol (IOB=0.38), isopropyl alcohol (IOB=0.39), isopropyl alcohol (IOB=0.40), isopropyl alcohol (IOB=0.41), isopropyl alcohol (IOB=0.42), isopropyl alcohol (IOB=0.43), isopropyl alcohol (IOB=0 One or more selected from isononyl nonanoate (IOB=0.20), decyltetradecanol (IOB=0.21), polyglyceryl-10 decaisostearate (IOB=0.24), phenyl trimethicone (IOB=0.25), octyldodecanol (IOB=0.26), neopentyl glycol dicaprate (IOB=0.25), polyglyceryl-2 triisostearate (IOB=0.26), etc. can be used.

[0024] Here, the IOB value is explained below. The IOB value is a value calculated based on the organic concept diagram (Fujita Atsushi, Prediction of organic compounds and the organic concept diagram, Chemistry area VOL. 11, No. 10 (1957) 719-715). More specifically, in this organic concept diagram, the degree of physical properties of a compound that are mainly due to van der Waals forces is defined as "organicity" and the degree of physical properties that are mainly due to electrical affinity is defined as "inorganicity". The IOB value is an index that shows the balance between inorganicity and organicity, and is expressed as IOB value = inorganicity value / organicity value. The higher this value, the more hydrophilic and polar the compound is.

[0025] The content of component (D) used in the present invention is, from the viewpoints of filling ability and good spreadability on the skin, 10% by mass or more, based on the total amount of the oil-based solid cosmetic, preferably 20% by mass or more, and 40% by mass or less, more preferably 35% by mass or less. Specifically, the content of component (D) is from 10 to 40 mass %, and more preferably from 20 to 35 mass %. If the content of component (D) is less than 10% by mass, the bulk will be excessively heavy, impairing filling properties, whereas if it exceeds 40% by mass, the oil will be sticky upon application and sufficient cosmetic durability will not be obtained.

[0026] The lipophilic surfactant, component (E), used in the present invention is preferably a nonionic surfactant having an HLB value in the range of 2.0 to 6.0, and examples thereof include glycerin fatty acid esters, propylene glycol fatty acid esters, sorbitan fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyethylene glycol fatty acid esters, alkyl glyceryl ethers, alkyl polyglyceryl ethers, polyoxyethylene alkyl ethers, polyoxyethylene alkyl ether fatty acid esters, polyoxyethylene alkyl amines, and silicone surfactants. Of these, from the viewpoint of improving filling properties, it is preferable to use sorbitan fatty acid esters, and it is particularly preferable to use sorbitan isostearate.

[0027] Here, the HLB (hydrophile-lipophile balance) in the present invention is an index showing the balance of hydrophilicity and lipophilicity, and is calculated by the following formula proposed by Oda and Teramura et al. HLB = "Inorganic value (IV) / Organic value (OV)" x 10 (See Yoshio Koda, "Organic Conceptual Diagram - Fundamentals and Applications", pages 11-17, Sankyo Publishing, 1984)

[0028] From the viewpoint of improving the filling property and the pigment dispersibility, the content of component (E) used in the present invention is 0.2% by mass or more, and preferably 0.7% by mass or more, based on the total amount of the oil-based solid cosmetic, and is 2.0% by mass or less, and preferably 1.5% by mass or less. Specifically, the content of component (E) is 0.2 to 2.0 mass %, and preferably 0.7 to 1.5 mass %. If the content of component (E) is less than 0.2% by mass, sufficient adhesion to the skin and good pigment dispersibility will not be obtained, and the filling ability will be impaired. If the content exceeds 2.0% by mass, the product will become sticky and the application feel will be poor.

[0029] In the present invention, by using component (F) spherical powder having an average particle size of 1.0 to 30 μm and an oil absorption of less than 100 ml / 100 g, a pore blurring effect can be obtained without impairing packing properties. Here, the oil absorption in the present invention is calculated by collecting 1.5 g of spherical powder in a medicine wrapping paper, placing it on a glass measuring plate, dropping 4 or 5 drops of boiled linseed oil (specified in JIS K 5101) from a burette onto the sample at a time, and kneading the whole with a spatula. This dropping and kneading is repeated until the sample becomes spirally wound, and the end point is calculated by the following formula. Oil absorption amount (mL / 100g)=(A / W)×100 (A is the amount of boiled linseed oil dropped (mL), and W is the amount of sample taken (g).)

[0030] If a powder having an oil absorption of more than 100 ml / 100 g is selected as component (F), the packing ability will be impaired and the skin will feel very dry after application. Examples of spherical powders having an oil absorption of more than 100 ml / 100 g include porous spherical silica, and it is preferable that these are not included in the present invention.

[0031] Furthermore, by using spherical powder having an average particle size of 1.0 to 30 μm as component (F), a good pore blurring effect can be obtained. The average particle size is the particle size obtained by averaging the maximum diameters of 20 particles on a line drawn randomly on a scanning electron microscope photograph.

[0032] Such spherical powders are not particularly limited as long as they are usable as cosmetics, and examples thereof include silicone powders such as TOSPEARL 145A (polymethylsilsesquioxane; average particle size 4.5 μm, oil absorption 58 ml / 100 g, manufactured by Momentive Performance Materials), silica powders such as CHIFONSIL P-3R (silica; average particle size 7 μm, oil absorption 20 ml / 100 g, manufactured by JGC Catalysts and Chemicals), and nylon resin powders such as ORGASOLR 4000 EXD NAT COS (nylon-6 / 12; average particle size 10 μm, oil absorption 90 ml / 100 g, manufactured by Arkema).

[0033] From the viewpoint of obtaining a pore blurring effect, the content of component (F) is 1.0 mass % or more, and preferably 3.0 mass % or more, and 10 mass % or less, and preferably 8.0 mass % or less. Specifically, the content of component (F) is from 1.0 to 10 mass %, and more preferably from 3.0 to 8.0 mass %. If the content of component (F) is less than 1.0% by mass, a sufficient pore blurring effect will not be obtained, whereas if it exceeds 10% by mass, the spherical powder will fall excessively into the pores, making the pores more noticeable.

[0034] In addition to the above-mentioned components, the oil-based solid cosmetic preparation of the present invention may contain components used in ordinary cosmetics, such as powders other than components (A), (B) and (F), solid waxes other than component (C), liquid oils other than component (D), other paste-like oils, coloring pigments, lower alcohols, polyhydric alcohols, polymeric compounds, ultraviolet absorbers, antioxidants, fragrances, antifouling agents, moisturizers, water, etc., to the extent that the effects of the present invention are not impaired.

[0035] The oil-based solid cosmetic of the present invention can be blended with a high amount of powder without impairing the packing property. For example, the oil-based solid cosmetic of the present invention can be blended with 60 mass% or more of powder based on the total amount of the oil-based solid cosmetic. In particular, as described above, by incorporating a high amount of titanium oxide and / or zinc oxide, etc., the covering power can be increased, which is preferable. Specifically, it is preferable that the oil-based solid cosmetic contains 50 to 70% by mass of powder.

[0036] The oil-based solid cosmetic of the present invention preferably does not contain a film-forming agent or a volatile oil. For example, the amount of a volatile oil is preferably 1.0 mass% or less based on the total amount of the oil-based solid cosmetic, and more preferably is substantially free of the oil. By not using film-forming agents or volatile oils, the containers to be filled do not need to be airtight, which allows for a wide variety of containers to be filled.

[0037] The oily solid cosmetic preparation of the present invention can be produced by a conventional method. The oil-based solid cosmetic of the present invention is a cosmetic containing an oil as a continuous phase, and can be, for example, makeup cosmetics such as foundation, eye shadow, cheek color, etc., lip cosmetics such as lipstick, lip cream, lip liner, etc. Among them, since it has high covering power, it is suitable as a foundation, makeup base, and concealer. EXAMPLES

[0038] Next, examples of the present invention will be described. The present invention is not limited to these examples. All blend amounts are in mass %.

[0039] Examples 1 to 14, Comparative Examples 1 to 8 (Prescription) Oil-based solid cosmetic compositions were produced according to the formulations shown in Tables 1 and 2 below, and their effects were evaluated using the evaluation methods described below. The results are also shown in Tables 1 and 2.

[0040] [Table 1]

[0041] [Table 2]

[0042] (Method of manufacturing the oil-based solid cosmetic preparations in Tables 1 and 2) The components were heated and melted at 90 to 100°C, stirred, kneaded, degassed, packed, and cooled.

[0043] The oil-based solid cosmetics produced in the above Examples 1 to 14 and Comparative Examples 1 to 8 were used by professional panelists (10 people) and evaluated on a 5-point scale in terms of "makeup staying power after 6 hours," "oily stickiness," "visibility of pores," "skin coverage," "feeling of makeup removal," "feeling of tightness after application," and "feeling of dryness after application," and judged according to the following evaluation criteria.

[0044] [Evaluation Criteria] 5: Very good 4: Good 3: Normal 2: Bad 1: Very bad

[0045] The scores given by each panelist on a 5-point scale were averaged to obtain an evaluation value, which was then judged on a 4-point scale according to the following criteria.

[0046] 〔Judgment criteria〕 ◎: Evaluation value (average value) 4.5 or higher ○: Evaluation value (average value) is 3.5 or more and less than 4.5 △: Evaluation value (average value) is 2.5 or more and less than 3.5 ×: Evaluation value (average value) less than 2.5

[0047] For the "filling ability" item, a certain amount of the cosmetic material was filled into a metal dish container at 90°C, tapped with a certain strength for a certain period of time, and the results were judged on a four-point scale according to the following criteria.

[0048] ◎: Bulk stretches uniformly by tapping 〇: The bulk stretches by tapping, but it is somewhat uneven. △: The bulk stretches by tapping, but not uniformly. ×: Bulk does not expand by tapping [Industrial Applicability]

[0049] The oily solid cosmetic composition of the present invention can be suitably used as a makeup cosmetic composition such as foundation, eye shadow, cheek color, etc., and in particular as a foundation, makeup base, concealer, etc., since it has high covering power.

Claims

1. An oil-based solid cosmetic comprising the following components (A) to (F), characterized in that the mass ratio of silicone applied as a treatment agent to component (A) to the mass of amino acid applied as a treatment agent to component (B) is in the range of 0.5 to 2.0, and the proportion of titanium oxide and / or zinc oxide in the entire cosmetic is 20 to 70 mass%. (A) Silicone-treated powder (B) Amino acid-treated powder (C) Solid wax having a melting point of 75°C to 120°C: 3.0 to 10% by mass (D) Liquid oil having an IOB value of less than 0.3: 10 to 40% by mass (E) Lipophilic surfactant: 0.2 to 2.0% by mass (F) Spherical powder having an average particle size of 1.0 to 30 μm and an oil absorption of less than 100 ml / 100 g: 1.0 to 10% by mass

2. 2. The oily solid cosmetic preparation according to claim 1, characterized in that said component (A) contains silicone-treated titanium oxide and / or zinc oxide.

3. 3. The oily solid cosmetic preparation according to claim 1, wherein the component (B) comprises titanium oxide and / or zinc oxide that have been treated with an amino acid.

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