Powdered cosmetics

Abstract

To provide powder cosmetics that not only have effect of adhering evenly to the skin during application, having good spreadability and providing good makeup retention, but also exhibit functions such as making the skin look finer after application and brightening the skin with soft-focus effect.SOLUTION: A powder cosmetic contains a component A being talc, a component B being nylon-12 with an average particle diameter of 4.0 to 6.0 μm, a component C being methyl methacrylate crosspolymer with an average particle diameter of 14 to 22 μm, and a component D being silica with an average particle diameter of 1.0 to 5.0 μm. The total amount of components A to D is 80 mass% or more of the total amount of the cosmetic.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to powdered cosmetics.

Background Art

[0002] Powdered cosmetics such as foundation (loose powder-like cosmetics) contain a large amount of powder and exhibit a high covering effect of hiding colors such as freckles, uneven skin tone, wrinkles, pores, etc., and unevenness in roughness. On the other hand, when a large amount of powder is blended in expectation of high covering power, there are problems such as uneven adhesion during application, poor extensibility, and poor makeup retention.

[0003] In order to solve these problems, powdered cosmetics having a smooth feeling of use and excellent makeup retention have been developed by blending fluorine-treated powder (Patent Document 1). However, although such a method can improve the uniform adhesion and extensibility during application to some extent, since the affinity to the skin is poor due to the fluorine treatment of the powder, the makeup retention is poor and it is not sufficiently satisfactory.

[0004] On the other hand, as an attempt to enhance makeup retention, oily powdered cosmetics blended with liquid fatty acids such as palmitooleic acid, isostearic acid, linoleic acid, oleic acid, etc. have been developed (Patent Document 2). However, in such a method, since it becomes easier to adhere to the skin by blending liquid fatty acids, although the makeup retention is improved, there is a problem of poor extensibility.

[0005] In order to solve such conventional problems, powdered cosmetics using octanoyl lysine and fluorine compound-treated powder in combination with powdered cosmetics containing a liquid oil component have also been developed (Patent Document 3). However, even with this attempt, it was insufficient to compensate for the mutual drawbacks such as poor makeup retention due to the fluorine compound-treated powder and poor extensibility due to the liquid fatty acid.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2012-006892 [Patent Document 2] Japanese Patent Application Publication No. 8-259418 [Patent Document 3] Japanese Patent Publication No. 2017-197495 [Overview of the project] [Problems that the invention aims to solve]

[0007] Therefore, the present invention has been made in view of the above-mentioned prior art, and aims to provide a powder cosmetic that, in addition to the effects of uniformly adhering to the skin when applied, having good spreadability and good makeup retention, exhibits functions such as making the skin appear finer after application and brightening the skin through a soft-focus effect. [Means for solving the problem]

[0008] In other words, the present invention relates to a powder cosmetic comprising the following components A, B, C, and D, wherein the total amount of components A, B, C, and D is 80% by mass or more of the total amount of the cosmetic. Ingredient A: Talc Component B: Nylon-12 with an average particle size of 4.0-6.0 μm Component C: Methyl methacrylate crosspolymer with an average particle size of 14-22 μm. Component D: Silica with an average particle size of 1.0 to 5.0 μm

[0009] It is preferable that the ratio of the content of component A to the total amount of component B, component C, and component D (component A / (component B + component C + component D)) is in the range of 1 to 20.

[0010] The powder cosmetic composition of the present invention preferably contains the following component E. Component E: Stearic acid-treated titanium dioxide and / or aluminum hydroxide-treated titanium dioxide

[0011] The powder cosmetic composition of the present invention preferably contains the following component F. Ingredient F: Liquid oil at 25℃ [Effects of the Invention]

[0012] The powder cosmetic composition of the present invention, by satisfying essential constituent requirements, exhibits the effects of uniform adhesion to the skin during application, good spreadability, and long-lasting wear compared to conventional powder cosmetic compositions, thereby solving problems both during and after application.

[0013] Furthermore, the powdered cosmetic of the present invention, in addition to the effects described above, exhibits the effect of making the skin appear finer after application, thus producing a particularly remarkable effect of making the skin appear even brighter through a soft-focus effect. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described below.

[0015] The powder cosmetic composition of the present invention contains talc, nylon-12, methyl methacrylate crosspolymer, and silica. In this specification, the talc is referred to as "component A," the nylon-12 as "component B," the methyl methacrylate crosspolymer as "component C," and the silica as "component D."

[0016] The details of each component used in the powder cosmetic composition of the present invention are described below.

[0017] [Component A] The above-mentioned component A is talc. In this invention, by using the above-mentioned component A and combining it with other essential components, the powder cosmetic can be uniformly applied to the skin during application, and the longevity of the makeup after application can be improved.

[0018] The oil absorption of the above-mentioned Component A of the present invention is not particularly limited as long as the desired effect can be exhibited. Usually, from the viewpoint of uniformly adhering to the skin and improving the makeup retention, the oil absorption is preferably 50 ml / 100 g to 80 ml / 100 g, and more preferably 60 ml / 100 g to 70 ml / 100 g. The oil absorption (ml / 100 g) is a value measured in accordance with the method described in JIS K5101.

[0019] In the present invention, commercially available products can also be used for the above-mentioned Component A. Commercially available products of the above-mentioned Component A are not particularly limited as long as the desired effect can be exhibited, whether they are single raw materials or mixed raw materials with other components. Specific commercially available products include, for example, the product name "TALCO SUPERRIORE M10" (oil absorption 65 ml / 100 g, manufactured by Imerys Talc) and the like.

[0020] The content of the above-mentioned Component A of the present invention is not particularly limited as long as the desired effect can be exhibited. Usually, from the viewpoint of uniformly adhering to the skin and improving the makeup retention, in 100% by mass of the composition, it is preferably 40% by mass to 98% by mass, and more preferably 70% by mass to 90% by mass. The content of the above-mentioned Component A is an amount converted to the pure content.

[0021] [Component B] The above-mentioned Component B is nylon-12 with an average particle size of 4.0 to 6.0 μm. In the present invention, by using the above-mentioned Component B and combining it with other essential constituent components, not only can the extensibility on the skin during application be improved, but also the soft focus effect can be significantly enhanced by making the skin after the treatment look delicate. The average particle size is the median diameter (D50) measured by the laser diffraction method.

[0022] In the present invention, component B may be a commercially available product. The commercially available component B is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effect is achieved. Specific examples of commercially available products include the product name "Gantzpearl GPA-550" (average particle size 4.0-6.0 μm, manufactured by Aica Kogyo Co., Ltd.).

[0023] The content of component B in the present invention is not particularly limited as long as the desired effect can be achieved, but from the viewpoint of improving spreadability on the skin and significantly enhancing the soft-focus effect, it is generally preferable to be 1% to 10% by mass, and more preferably 3% to 7% by mass, of 100% by mass of the composition. Note that the content of component B is the amount converted to pure content.

[0024] [Component C] The above component C is a methyl methacrylate crosspolymer with an average particle size of 14-22 μm. In this invention, by using the above component C and combining it with other essential components, the spreadability on the skin during application can be improved, and the soft-focus effect can be further enhanced. The average particle size is the median diameter (D50) measured by laser diffraction.

[0025] In the present invention, component C may be a commercially available product. The commercially available component C is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effect is achieved. Specific examples of commercially available products include the product name "Matsumoto Microsphere M-305QD18" (uniform particle size 14-22 μm, manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd.).

[0026] The content of component C in the present invention is not particularly limited as long as the desired effect can be achieved. However, from the viewpoint of improving spreadability on the skin and further enhancing the soft-focus effect, it is generally preferable that the content be 1% to 10% by mass, and more preferably 3% to 7% by mass, of 100% by mass of the composition. Note that the content of component C is the amount converted to pure content.

[0027] [Component D] The above component D is silica with an average particle size of 1.0 to 5.0 μm. In this invention, by using the above component D and combining it with other essential components, the spreadability on the skin during application can be improved, and the soft-focus effect can be further enhanced. The average particle size is the median diameter (D50) measured by laser diffraction.

[0028] In the present invention, component D may be a commercially available product. The commercially available component D is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effect is achieved. Specific examples of commercially available products include the product name "BA4" (average particle size 1.0~5.0 μm, manufactured by JGC Catalysts & Chemicals Co., Ltd.) and the product name "Gotball G-6C" (average particle size 3.2~5.0 μm, manufactured by Suzuki Oil & Fat Industry Co., Ltd.).

[0029] The content of component D in the present invention is not particularly limited as long as the desired effect can be achieved, but from the viewpoint of improving spreadability on the skin and further enhancing the soft-focus effect, it is generally preferable to have a content of 2% to 20% by mass, and more preferably 6% to 10% by mass, of 100% by mass of the composition. Note that the content of component D is the amount converted to pure content.

[0030] In the powdered cosmetic composition of the present invention, the total amount of component A, component B, component C, and component D is 80% by mass or more of the total amount of the cosmetic composition. That is, it is 80% to 100% by mass of the total amount of the cosmetic composition. In the present invention, by setting the total amount of component A, component B, component C, and component D to 80% by mass or more of the total amount of the cosmetic composition, it is possible to achieve not only the effect of uniform adhesion to the skin when applied, good spreadability, and good makeup retention, but also the particularly remarkable effect of making the skin appear finer after application and making the skin appear even brighter through a soft-focus effect.

[0031] In addition, from the viewpoint of fully exhibiting the unique effects of the present invention described above, the ratio of the content of component A to the total amount of component B, component C, and component D (component A / (component B + component C + component D)) is preferably in the range of 1 to 20, more preferably in the range of 1.5 to 15, and most preferably in the range of 2 to 10.

[0032] [Component E] The powder cosmetic composition of the present invention may further contain the following component E. Component E: Stearic acid-treated titanium dioxide and / or aluminum hydroxide-treated titanium dioxide

[0033] In this invention, by further incorporating the above-mentioned component E, it becomes possible to further enhance the soft-focus effect on the skin after treatment, making the skin appear even brighter.

[0034] In the present invention, component E may be a commercially available product. The commercially available component E may be a single raw material or a mixed raw material with other components, as long as the desired effect is achieved. Examples of commercially available stearic acid-treated titanium dioxide include the product name "SP Sorabelle XTP1 MBAL-PW-(MV)" (average particle size 0.179 μm, manufactured by Croda Europe Ltd). Examples of commercially available aluminum hydroxide-treated titanium dioxide include the product name "CR-50" (average particle size 0.25 μm, manufactured by Ishihara Sangyo Co., Ltd.).

[0035] The content of component E in this invention is not particularly limited as long as the desired effect can be achieved. However, from the viewpoint of further enhancing the soft-focus effect on the skin after treatment and making the skin appear even brighter, it is generally preferable that the content be 1% by mass or more, and more preferably 2% by mass or more, per 100% by mass of the composition. On the other hand, if the content exceeds 10% by mass, the spreadability will be poor, and the skin will feel more prone to squeaking, which may hinder the effects of this invention. In other words, the content of component E is preferably 1% by mass to 10% by mass, and more preferably 2% by mass to 10% by mass. Note that the content of component E is the amount converted to pure content.

[0036] [Component F] The powder cosmetic composition of the present invention may further contain the following component F. Ingredient F: Liquid oil at 25℃

[0037] In this invention, further incorporation of component F enhances the longevity of makeup after application. In this invention, "liquid at 25°C" refers to a state of fluidity at 25°C.

[0038] Examples of the above-mentioned component F include oils and fats, hydrocarbon oils, and fatty acid ester oils that are liquid at 25°C. These components F may be used individually or in appropriate combinations of two or more types.

[0039] Specific examples of the above oils and fats include, for example, olive oil, sesame oil, rice bran oil, soybean oil, rapeseed oil, castor oil, sunflower oil, grape seed oil, cottonseed oil, kukui nut oil, wheat germ oil, evening primrose oil, macadamia nut oil, meadowfoam oil, jojoba seed oil, and avocado oil.

[0040] Specific examples of the hydrocarbon oils mentioned above include, for example, α-olefin oligomers, light isoparaffins, light liquid isoparaffins, synthetic squalane, vegetable squalane, squalane, liquid isoparaffins, and liquid paraffins.

[0041] Specific examples of the above fatty acid ester oils include, for example, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyl palmitate, isocetyl palmitate, octyl stearate, cetyl octanoate, stearyl octanoate, propylene glycol dicaprylate, di(caprylic / capric acid)propylene glycol, propylene glycol dicaprate, glyceryl trioctanoate, tri(caprylic / capric acid)glyceryl, and triethylhexanoin.

[0042] In the present invention, among the above-mentioned component F, it is preferable to use oils and hydrocarbon oils, and more preferably to use squalane, jojoba seed oil, and avocado oil, from the viewpoint of further improving the longevity of the makeup.

[0043] In the present invention, component F may be a commercially available product. The commercially available component F may be a single ingredient or a mixture with other ingredients, as long as the desired effect is achieved. Examples of commercially available squalane include the product names "NIKKOL Sugar Squalane" (manufactured by Nikko Chemicals Co., Ltd.) and "Oryza Squalane" (manufactured by Oryza Oil & Fat Chemical Co., Ltd.). Examples of commercially available jojoba seed oil include the product name "Jojobal (Refined Jojoba Oil)" (manufactured by Watanoha Trading Co., Ltd.). Examples of commercially available avocado oil include the product name "BIOCHEMICA AVOCADO OIL REF ORG" (manufactured by The HallStar Company).

[0044] The content of component F in this invention is not particularly limited as long as the desired effect can be achieved, but from the viewpoint of further improving the longevity of the makeup, it is preferably 1% to 5% by mass, and more preferably 2% to 4% by mass, of 100% by mass of the composition. In this invention, if component F is included in an amount exceeding 5% by mass, the spreadability will be poor, a sticky feeling may be more likely, and the effect of this invention may be inhibited. Note that the content of component F is the amount converted to pure content.

[0045] [Other ingredients] In addition to the above-mentioned components, the powder cosmetic composition of the present invention may appropriately contain, for example, powders other than components A to E; oils other than component F; plant extracts, anti-inflammatory agents, polyhydric alcohols, humectants, fragrances, pH adjusters, film-forming agents, chelating agents, lower alcohols, alkaline agents, vitamins, astringents, antioxidants, preservatives, UV absorbers, colorants, plant fermentation extracts, purified water, etc., depending on the purpose.

[0046] The term "powdered cosmetic composition" in this invention refers to a cosmetic composition in powder form (loose powder form) and does not include a compressed, solid form (pressed form).

[0047] The powder cosmetic of the present invention exhibits excellent effects when applied to the skin, and is therefore preferably used as a powder (loose powder) makeup cosmetic such as foundation, body powder, or whitening powder. Furthermore, the powder cosmetic of the present invention may take the form of cosmetics, quasi-drugs, designated quasi-drugs, or general merchandise.

[0048] The areas to which the powder cosmetic composition of the present invention is applied are not particularly limited, but as an example, it can be used on the face (forehead, around the eyes, corners of the eyes, cheeks, etc.), neck, décolleté, etc. [Examples]

[0049] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. Unless otherwise specified, the amounts of each ingredient are expressed in "mass%".

[0050] (Sample preparation 1) Powdered cosmetic compositions for Examples 1-16 and Comparative Examples 1-7 were prepared according to conventional methods, based on the compositions shown in Tables 1-3, and subjected to the evaluation described below. The results are shown in Tables 1-3. Note that all amounts in the tables are calculated on a pure content basis. All evaluations were performed under constant temperature conditions (25±2℃).

[0051] The following components were used in the examples and comparative examples.

[0052] [Component A] Talc: Product name "TALCO SUPERRIORE M10" (Oil absorption capacity 65ml / 100g, manufactured by Imerys Talc) [Component B] Nylon-12: Product name "Gantzpearl GPA-550" (average particle size 4.0~6.0 μm, manufactured by Aica Kogyo Co., Ltd.) [Component C] Methyl methacrylate crosspolymer: Product name "Matsumoto Microsphere M-305QD18" (uniform particle size 14-22 μm, manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd.) [Component D] Silica: Product name "BA4" (average particle size 1.0~5.0 μm, manufactured by JGC Catalysts & Chemicals Co., Ltd.) [Component E] Stearic acid-treated titanium dioxide: Product name "SP Sorabelle XTP1 MBAL-PW-(MV)" (average particle size 0.179 μm, manufactured by Croda Europe Ltd.) Aluminum hydroxide-treated titanium dioxide: Product name "CR-50" (average particle size 0.25 μm, manufactured by Ishihara Sangyo Co., Ltd.) [Component F] Squalane: Product name "NIKKOL Sugar Squalane" (manufactured by Nikko Chemicals Co., Ltd.) Jojoba seed oil: Product name "Jojobal (refined jojoba oil)" (manufactured by Watahan Trading Co., Ltd.) Avocado oil: Product name "BIOCHEMICA AVOCADO OIL REF ORG" (manufactured by The HallStar Company)

[0053] (Test Example 1: Evaluation of User Experience) A usage test was conducted by having participants apply 0.1g of the powdered cosmetic obtained in each example and comparative example to their face (cheek) using a puff. The evaluation was based on sensory evaluation of six items: "uniformity during application," "spreadability during application," "makeup longevity," "skin texture," "soft-focus effect," and "skin brightness," and was scored according to the following evaluation points from 1 to 5. The evaluation was conducted by five expert evaluators, and the final result was determined by a comprehensive judgment of each evaluator's evaluation.

[0054] The evaluation of "Uniformity of Application" was based on the uniformity of application, with higher scores given for greater uniformity. The evaluation of "Spreadability of Application" was based on the spreadability of application, with higher scores given for greater spreadability. The evaluation of "Longevity of Makeup" was based on a comparison of the condition immediately after application and the condition 5 hours later, with higher scores given for less change in condition. The evaluation of "Skin Texture" was based on the finer the skin appeared after application, with higher scores given for greater smoothness. The evaluation of "Soft Focus Effect" was based on the degree of soft focus effect after application, with higher scores given for greater soft focus effect. The evaluation of "Skin Brightness" was based on the brighter the skin appeared after application, with higher scores given for greater brightness.

[0055] The evaluation was conducted according to the following five-level evaluation criteria. The results were calculated based on the average score of the expert evaluation panel, and a judgment was made according to the following criteria.

[0056] <Evaluation Criteria> 5 points: Very good 4 points: Good 3 points: normal 2 points: Defective 1 point: Very poor

[0057] <Judgment criteria> ◎: Average 4.0 points or more ○: Average score of 3.0 or higher but less than 4.0 △: Average score between 2.0 and 3.0 ×: Average score below 2.0

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] The results shown in Tables 1 to 3 indicate that the powdered cosmetics obtained in each example adhered uniformly to the skin upon application, had good spreadability, long-lasting wear, made the skin appear smoother after application, exhibited excellent soft-focus effects, and provided significantly better skin brightness compared to those obtained in each comparative example. In short, they demonstrated remarkably superior effects in all six evaluation items.

[0062] On the other hand, comparative examples of powdered cosmetics that did not satisfy the composition of the present invention, as well as comparative examples of powdered cosmetics in which other components were substituted, did not yield satisfactory results in the six evaluation items. As is clear from these results, the powdered cosmetic of the present invention can simultaneously solve the problems that conventional powdered cosmetics had during application and after application.

Claims

1. A powder cosmetic characterized by containing 70 to 90% by mass of component A, 1 to 10% by mass of component B, 1 to 10% by mass of component C, 2 to 20% by mass of component D, 1 to 10% by mass of component E, and 1 to 5% by mass of component F, wherein the total amount of component A, component B, component C, and component D is 80% by mass or more of the total amount of the cosmetic. Ingredient A: Talc Component B: Nylon-12 with an average particle size of 4.0 to 6.0 μm. Component C: Methyl methacrylate crosspolymer with an average particle size of 14-22 μm. Component D: Silica with an average particle size of 1.0 to 5.0 μm Component E: Stearic acid-treated titanium dioxide and / or aluminum hydroxide-treated titanium dioxide Component F: Liquid oil at 25°C

2. The cosmetic composition according to claim 1, characterized in that the ratio of the content of component A to the total amount of component B, component C, and component D (component A / (component B + component C + component D)) is in the range of 1 to 20.

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