Oil-in-water cosmetic

Abstract

The present application provides an oil-in-water cosmetic which is excellent in use, and which is less likely to be attached to clothes or the like again after being applied to the skin. The oil-in-water cosmetic of the present application comprises: (A) agar; (B) a mica whose surface is hydrophilic; (C) a non-silicone-treated coloring material; (D) silica; (E) water; and (F) an oil component. The cosmetic contains the (A) component in an amount of 0.01 to 1.3% by mass.

Description

Technical Field

[0001] This invention relates to water-in-oil cosmetics containing powder, suitable for use in foundations and the like. Background Technology

[0002] Most water-in-oil emulsion cosmetics, such as foundations, which have an oil-based outer phase, tend to lack a moisturizing feel, have poor hydrating effect, and / or poor nourishment when applied.

[0003] On the other hand, water-in-oil cosmetics can provide a moisturizing feel and have excellent moisturizing effects. Experiments have been conducted to thicken or solidify water-in-oil compositions to produce semi-solid or solid cosmetics suitable for foundations, etc.

[0004] However, while water-in-oil cosmetics offer a smoother and more moisturizing feel compared to oil-in-water cosmetics, they tend to adhere more easily to the skin and clothing, resulting in secondary adhesion. Furthermore, water-in-oil cosmetics are also prone to syneresis over time.

[0005] Therefore, there is a demand for water-in-oil cosmetics such as foundations that offer excellent usability and suppress secondary adhesion.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: International Patent Publication No. 2019 / 088056 Summary of the Invention

[0009] In view of the aforementioned problems, the present invention provides a semi-solid or solid cosmetic with excellent usability and suppressed secondary adhesion.

[0010] According to the present invention, the following invention is provided. [1]

[0012] A cosmetic product, which is an oil-in-water emulsion cosmetic, comprises:

[0013] (A) Agar,

[0014] (B) The surface is hydrophilic mica.

[0015] (C) Non-silicone treated coloring materials

[0016] (D) Silica,

[0017] (E) Water, and

[0018] (F) Oil content,

[0019] Based on the total mass of the aforementioned cosmetics, the content of ingredient (A) is 0.01 to 1.3% by mass. [2]

[0021] According to the cosmetic described in [1], it also contains a thickening polysaccharide selected from the group consisting of succinosaccharide and carboxymethyl cellulose. [3]

[0023] According to the cosmetic described in [1] or [2], wherein component (C) is a coloring pigment that has undergone treatment selected from metal soap treatment, amino acid-based treatment and fatty acid polyglycerol ester treatment. [4]

[0025] The cosmetic according to any one of [1] to [3], wherein the total content of agar, succinopolysaccharide and carboxymethyl cellulose is less than 1.3% by mass, based on the total mass of the aforementioned cosmetic. [5]

[0027] The cosmetic according to any one of [1] to [4], wherein the content of ingredient (B) is 0.1 to 5% by mass based on the total mass of the aforementioned cosmetic. [6]

[0029] The cosmetic according to any one of [1] to [5], wherein the content of ingredient (C) based on the total mass of the aforementioned cosmetic is 0.1 to 20% by mass. [7]

[0031] The cosmetic according to any one of [1] to [6], wherein the oil absorption of component (D) is 70 mL / 100 g or more. [8]

[0033] The cosmetic according to any one of [1] to [7] further comprises (G) a nonionic surfactant. [9]

[0035] The cosmetic according to any one of [1] to [8] further comprises (H) a moisturizer.

[0036] According to the present invention, a water-in-oil cosmetic product is provided that has excellent usability and does not easily re-adhere to clothing after being applied to the skin. This cosmetic product also exhibits excellent long-term stability and has the characteristics of good makeup effect when applied to the skin and minimal makeup removal due to sweat and sebum. Detailed Implementation

[0037] The water-in-oil cosmetic of the present invention (hereinafter, sometimes simply referred to as "cosmetic") comprises:

[0038] (A) Agar,

[0039] (B) The surface is hydrophilic mica.

[0040] (C) Non-silicone treated coloring materials

[0041] (D) Silica,

[0042] (E) Water, and

[0043] (F) Oil content.

[0044] The following section explains these components and the components that can be further combined.

[0045] (A) Agar

[0046] The cosmetic of the present invention contains agar (hereinafter sometimes referred to as ingredient (A)). Ingredient (A) is a type of polysaccharide and is commonly used in cosmetics as a hydrophilic thickener. Ingredient (A) has sol-gel transfer ability, and after being dissolved by heating, it solidifies by cooling to form a gel, and is characterized by being resistant to ionic influence. Besides agar, other known types of polysaccharides have sol-gel transfer ability, but agar is required to be included in this invention.

[0047] (A) solidifies upon cooling. From the viewpoint of curability at room temperature, the gelation point (freezing point) of its aqueous solution is preferably 30°C or higher, and from the viewpoint of solubility during manufacturing, it is preferably 50°C or lower, and more preferably 45°C or lower. Combining these viewpoints, the gelation point of the aqueous solution of (A) is preferably 30–50°C, and more preferably 30–45°C. The gelation point of the aqueous solution of (A) is determined as follows: approximately 10 ml of the gel aqueous solution is placed in a medium-sized test tube (1.5 cm × 16 cm in diameter) and a thermometer is inserted. The test tube is tilted intermittently for cooling, and the temperature at which its surface becomes fixed and no longer moves is determined.

[0048] (A) The composition has a basic structure containing a large amount of galactose as a monosaccharide unit. In addition, it contains neutral agarose and agar gum with ionic groups, and a portion of the agar gum contains sulfate groups.

[0049] In this invention, as component (A), there are no particular limitations on any substance whose main component is agarose with high gelling power. Agar can be a natural product or a commercially available product. As commercially available agar, preferably, for example, Ina Kanten PS-84, Z-10, AX-30, AX-100, AX-200, T-1, S-5, M-7 (manufactured by Ina Foods Co., Ltd.). Alternatively, refined agarose can also be used as the agar.

[0050] In the cosmetic of the present invention, the content of ingredient (A) can be adjusted according to the purpose, but in order to achieve sufficient usability and secondary adhesion inhibition effect, it must be 0.1 to 1.3% by mass, preferably 0.5 to 1.2% by mass, based on the total mass of the cosmetic.

[0051] It should be noted that, in addition to ingredient (A), the cosmetic of the present invention may further include a thickening polysaccharide selected from the group consisting of succinopolysaccharide and carboxymethyl cellulose. By using these additional thickening polysaccharides, the effects brought about by ingredient (A) can be adjusted. However, the effects of the present invention cannot be achieved solely by these additional thickening polysaccharides, and in addition, if the content of the additional thickening polysaccharides is too high, the effects of the present invention may sometimes be impaired. Therefore, the total content of agar, succinopolysaccharide, and carboxymethyl cellulose is preferably 1.3% by mass or less based on the total mass of the aforementioned cosmetic.

[0052] (B) Mica with a hydrophilic surface

[0053] The cosmetic of the present invention comprises mica with a hydrophilic surface (hereinafter sometimes referred to as component (B)). The mica may be selected from those commonly used in cosmetics, but must have a hydrophilic surface.

[0054] Mica is known to include mica, sericite, muscovite, phlogopite, synthetic mica, rubicic mica, biotite, lepidolite, calcined mica, etc., and can be selected from among them. In this invention, component (B) requires a hydrophilic surface, but the surface of natural mica is usually hydrophilic, so untreated mica can be used directly. Furthermore, the surface state of synthetic mica can be changed depending on the synthesis method and processing method; hydrophobic mica can also be used in the cosmetics of this invention by subjecting its surface to hydrophilic treatment. It should be noted that for hydrophilic mica, it is preferable to use it directly in its untreated state, but further hydrophilic treatment or surface treatment to maintain sufficient hydrophilicity may be performed for purposes such as attaching specific substituents to the surface of mica particles.

[0055] In this invention, by combining it with mica, which has a hydrophilic surface, an unexpected effect can be achieved, such as improving makeup smudging caused by sweat, sebum, etc. when cosmetics are applied to the skin, and making the makeup look natural after application. (B) The content of the ingredient can be arbitrarily selected according to the purpose, but in order to achieve such characteristics, it is preferably 0.1 to 5% by mass, more preferably 0.5 to 5% by mass, based on the total mass of the cosmetic.

[0056] (C) Non-silicone treated coloring materials

[0057] The cosmetic of the present invention comprises a non-silicone treated coloring material (hereinafter sometimes referred to as component (C)) as a coloring material. Component (C) is obtained by treating a powdered coloring material such as a pigment with a treatment agent other than an organosilicon-based agent. Various treatments using treatment agents other than organosilicon-based agents are known, including metal soap treatment, amino acid-based treatment, fatty acid polyglycerol ester treatment, lecithin treatment, fatty acid treatment, inorganic compound treatment, alkyl phosphate ester treatment, etc., and can be selected from these depending on the purpose. Among these, metal soap treatments such as aluminum stearate treatment and magnesium stearate treatment, amino acid-based treatments using N-acylglutamic acid, etc., and fatty acid polyglycerol ester treatments using polyglycerol-2-tetraisostearate, etc., are preferred.

[0058] In the cosmetic of the present invention, the content of component (C) can be adjusted according to the purpose, and the content of component (C) based on the total mass of the aforementioned cosmetic is preferably 0.1 to 20% by mass, more preferably 1 to 10% by mass.

[0059] (D) Silica

[0060] The cosmetic of the present invention contains silica (hereinafter sometimes referred to as ingredient (D)). In the present invention, ingredient (D) has the effect of preventing secondary adhesion and also has the effect of improving stability over time.

[0061] Various types of silica are known, and any type can be used depending on the purpose. For example, porous silica, non-porous silica, and hollow non-porous silica are known, and any type can be used. In addition, silica that has undergone various surface treatments is known, and silica that has undergone hydrophobic treatment is preferred.

[0062] In addition, there is no particular limitation on the oil absorption of component (D). For example, the oil absorption measured using squalane is preferably 70 mL / 100g or more, and more preferably 100 mL / 100g or more.

[0063] In addition, the particle size of component (D) can be arbitrarily selected according to the purpose, preferably with an average particle size of 20 μm or less, and more preferably 5 to 10 μm.

[0064] In the cosmetic of the present invention, the content of component (D) can be adjusted according to the purpose, and the content of component (D) based on the total mass of the aforementioned cosmetic is preferably 1 to 15% by mass, more preferably 2 to 10% by mass.

[0065] (E) Water

[0066] The water-in-oil cosmetic of the present invention comprises an aqueous phase and an oil phase. Furthermore, it contains water (hereinafter sometimes referred to as component (E)) as the aqueous phase. The water can be water commonly used in cosmetics, such as purified water, ion-exchanged water, tap water, etc.

[0067] (F) Oil content

[0068] The water-in-oil cosmetic of the present invention contains an oil component constituting the oil phase (hereinafter, sometimes referred to as (F) component).

[0069] (F) The components can be broadly classified into polar oils and non-polar oils, and either one can be used in this invention.

[0070] Examples of polar oils include esters, higher fatty acids, and higher fatty alcohols.

[0071] Examples of ester oils include octyl caprylate, nonyl nonanoate, cetyl ethylhexanoate, isopropyl myristate, octyl dodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, dimethyl octyl hexyl decyl dimethyl octate, cetyl lactate, myristyl lactate, acetylated lanolin, isocetyl stearate, isocetyl isostearate, cholesterol 12-hydroxystearate, ethylene glycol di(2-ethylhexyl) ester, N-alkyl diol monoisostearate, neopentyl glycol didecanoate, and diisostearate malate. Cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, methyl castor oil, oleyl oleate, acetylglycine, 2-heptyl undecyl palmitate, diisobutyl adipic acid, phytosterol / octyldodecyl lauroyl glutamate, di(2-heptyl undecyl alcohol) adipate, ethyl laurate, di(2-ethylhexyl sebacate), 2-hexyl decyl myristate, 2-hexyl decyl palmitate, 2-hexyl decyl adipic acid, diisopropyl sebacate, 2-ethylhexyl succinate, triethyl citrate, cetyl ethylhexanoate, phytosterol macadamia oleate, tocopheryl acetate, etc.

[0072] Examples of high-grade fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecenoic acid, tall oil, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

[0073] Examples of higher alcohols include straight-chain alcohols (such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, octadecyl alcohol, etc.) and branched-chain alcohols (such as lanolin alcohol, cholesterol, phytosterol, hexyldodecyl alcohol, isostearyl alcohol, octyldodecyl alcohol, etc.).

[0074] Examples of non-polar oils include hydrocarbon oils and silicone oils.

[0075] Examples of hydrocarbon oils include paraffin, squalane, squalene, isohexadecane, isododecane, hydrogenated polydecene, hydrogenated isopolybutene, and petrolatum.

[0076] Examples of silicone oils include chain silicone oils such as polydimethylsiloxane, methylphenyl polysiloxane, octyl polymethylsiloxane, diphenylsiloxyphenyl polytrimethylsiloxane, methylhydropolysiloxane, and trimethylsiloxysilicate, as well as cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecylcyclohexasiloxane.

[0077] Furthermore, component (B) used in this invention can be either a polar oil or a non-polar oil, or a mixture thereof. Additionally, ester oils are preferred as polar oils, and hydrocarbon oils are preferred as non-polar oils.

[0078] In this invention, based on the total mass of the cosmetic, the content of ingredient (F) is preferably 5 to 40% by mass.

[0079] (G) Nonionic surfactants

[0080] In addition to the ingredients described above, the cosmetics of the present invention may also contain nonionic surfactants (hereinafter sometimes referred to as ingredient (G)). In the oil-in-water cosmetics of the present invention, the nonionic surfactant functions as a dispersant, stabilizing its dispersion state.

[0081] As an ingredient (G), there are no particular limitations as long as it is a nonionic surfactant commonly used in cosmetics. Examples include fatty acid polyoxyalkylene glycerides such as PEG-60 glyceryl isostearate; polyoxyethylene hydrogenated castor oils such as PEG-40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and PEG-100 hydrogenated castor oil; and polyoxyethylene hydrogenated castor oils such as PEG-3 polydimethylsiloxane, PEG-9 polydimethylsiloxane, PEG10-polydimethylsiloxane, and PEG12-polydimethylsiloxane. EG-9 polydimethylsiloxane and other polyoxyethylene-methylpolysiloxane copolymers; polyglycerol-2 diisostearate, polyglycerol-2 triisostearate and other polyglycerol fatty acid esters; glycerol stearate, glycerol oleate and other monoglycerol fatty acid esters; polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monostearate and other polyoxyethylene sorbitan fatty acid esters; sorbitan sesquioleate, sorbitan sesquiisostearate, sorbitan isostearate, sorbitan palmitate and other sorbitan fatty acid esters, etc.

[0082] When using ingredient (G), the amount of ingredient (G) relative to the total mass of the cosmetic is preferably 1.5% by mass or less, more preferably 0.1 to 1.0% by mass.

[0083] (H) Moisturizer

[0084] In addition to the ingredients described above, the cosmetic of the present invention may further contain a moisturizer (hereinafter sometimes referred to as ingredient (H)). Ingredient (H) has a moisturizing effect on the skin to which the cosmetic is applied.

[0085] As component (H), moisturizers commonly used in cosmetics can be selected according to the purpose. Examples include propylene glycol, dipropylene glycol, glycerin, 1,3-butanediol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucopolysaccharide sulfate, carboxylic acid, terminal collagen, cholesterol-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, prickly pear fruit extract, yarrow extract, and mesona chinensis extract.

[0086] When using ingredient (H), the amount of ingredient (H) relative to the total mass of the cosmetic is preferably 0.5 to 15% by mass, more preferably 1 to 10% by mass.

[0087] In the cosmetics of the present invention, in addition to the above-described ingredients, any ingredients commonly used in cosmetics may be incorporated. Examples of such ingredients include those listed below; one or more ingredients may be incorporated to achieve the desired effect of the present invention.

[0088] (a) Lower alcohols, such as ethanol, propanol, isopropanol, isobutanol, tert-butanol, etc.

[0089] (b) Metal ion chelating agents, such as 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium 1-hydroxyethane-1,1-diphosphonic acid, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid (vitamin C), succinic acid, edetate, trisodium hydroxyethylethylenediaminetriacetate, etc.

[0090] (c) Neutralizing agents, such as 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate, etc.

[0091] (d) pH adjusters, such as lactate-sodium lactate, citrate-sodium citrate, succinate-sodium succinate and other buffers;

[0092] (e) Antioxidants, such as tocopherols (vitamin E), butylated hydroxytoluene, butylated hydroxyanisole, gallates, etc.

[0093] (f) Preservatives, such as phenoxyethanol, ethylparaben, butylparaben, etc.;

[0094] (g) Pharmaceuticals, such as caffeine, tannins, verapamil and its derivatives, tranexamic acid and its derivatives, licorice extract, glycyrrhizin, hot water extract of firethorn fruit, various crude drugs, tocopheryl acetate, glycyrrhizic acid and its derivatives or salts thereof.

[0095] (h) Whitening agents, such as alkoxysalicylic acid or its salts, such as potassium 4-methoxysalicylate, vitamin C, magnesium ascorbate phosphate, ascorbate glucoside, and other whitening agents.

[0096] (i) Ultraviolet absorbers.

[0097] The cosmetics of the present invention may be, for example, color cosmetics (such as foundation, makeup base, etc.), skin care cosmetics (such as toner, lotion, cream, serum, dressing, etc.), skin cleansers (such as facial cleanser, makeup remover, etc.), sunscreen cosmetics, ointments, etc.

[0098] The cosmetics of the present invention can be manufactured by any method known in the art. The emulsification method used to produce oil-in-water cosmetics is not particularly limited and can be manufactured using conventional methods.

[0099] Example

[0100] The invention is illustrated by the following examples, but is not limited to these examples. Unless otherwise specified, the content is expressed as a percentage of mass relative to the total amount.

[0101] [Examples 1-7 and Comparative Examples 1-5]

[0102] As shown in Table 1, oil-in-water cosmetics suitable for use as liquid foundations were prepared by combining the various ingredients. The physical properties of the resulting cosmetics were evaluated as follows.

[0103] Tolerance to sweat and tolerance to sebum

[0104] The prepared cosmetic was applied to a substrate and allowed to dry. A concentration of 0.2 mg / cm³ was applied to its surface. 2 An ion-exchanged water substitute for sweat or artificial sebum substitute is applied to form a coating. The coating is then lightly tapped with a hammer to which artificial leather is attached, and both the artificial leather surface and the coating surface are observed and evaluated using one of four grades: A through D.

[0105] A: On the artificial leather after light tapping, there was no or almost no color transfer of cosmetics.

[0106] B: When the artificial leather was lightly tapped, slight color transfer of the cosmetics occurred.

[0107] C: The artificial leather, after being lightly tapped, shows traces of cosmetic color.

[0108] D: The marks left by light tapping appear on the cosmetic coating.

[0109] Makeup effect

[0110] The prepared cosmetics were applied to the skin and the makeup effect was observed and evaluated on a scale of A to D.

[0111] A: The makeup adheres lightly and evenly.

[0112] B: The makeup looks a little heavy, but it's even.

[0113] C: The makeup adheres lightly, but not evenly.

[0114] D: The makeup effect is heavy and uneven.

[0115] fit

[0116] The cosmetic product was applied to the skin, and the number of applications required until the base was fully integrated with the skin was counted. The product was then evaluated on a scale of A to D.

[0117] A: It will blend in no more than 3 times.

[0118] B: Apply 3-5 times until blended.

[0119] C: Apply 5-10 times until blended.

[0120] D: It still doesn't blend even after applying it 10 times.

[0121] stability

[0122] The cosmetics were filled into a tubular container, and the state of the cosmetics was observed when they were discharged from the tubular container. They were evaluated on a scale of A to D.

[0123] A: The discharged cosmetics maintain a uniform single phase.

[0124] B: The discharged cosmetics remain in a single phase, but the viscosity decreases.

[0125] C: A small amount of liquid seeped out from the discharged cosmetics.

[0126] D: The discharged cosmetics are separated into liquid and solid.

[0127] The results are shown in Table 1.

[0128] [Table 1]

[0129]

[0130] It should be noted that Comparative Example 5, which does not contain agar, was not cured, so some evaluations could not be performed.

Claims

1. A cosmetic product, which is an oil-in-water emulsion cosmetic product, comprising: (A) Agar, (B) The surface is hydrophilic mica. (C) Non-silicone treated coloring materials (D) Silica, (E) Water, and (F) Oil content, Based on the total mass of the cosmetic product, the content of ingredient (A) is 0.01 to 1.3% by mass.

2. The cosmetic according to claim 1, further comprising a thickening polysaccharide selected from the group consisting of succinosaccharides and carboxymethyl cellulose.

3. The cosmetic product according to claim 1 or 2, wherein, (C) is a coloring pigment that has undergone treatment selected from metal soap treatment, amino acid-based treatment and fatty acid polyglycerol ester treatment.

4. The cosmetic product according to claim 1 or 2, wherein, Based on the total mass of the cosmetic product, the combined content of agar, succinopolysaccharide, and carboxymethyl cellulose is less than 1.3% by mass.

5. The cosmetic product according to claim 1 or 2, wherein, The content of ingredient (B) is 0.1 to 5% by mass, based on the total mass of the cosmetic product.

6. The cosmetic product according to claim 1 or 2, wherein, The content of ingredient (C) is 0.1 to 20% by mass, based on the total mass of the cosmetic product.

7. The cosmetic product according to claim 1 or 2, wherein, (D) component has an oil absorption capacity of over 70 mL / 100g.

8. The cosmetic according to claim 1 or 2, further comprising (G) a nonionic surfactant.

9. The cosmetic according to claim 1 or 2, further comprising (H) a moisturizer.

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