Cosmetics

Abstract

To provide cosmetics that are aesthetically superior by suppressing discoloration over time and the precipitation of ingredients contained in the cosmetics. [Solution] By including (A) hydrolyzed gardenia extract, (B) cyanocobalamin, and (C) cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, the cosmetic composition can suppress discoloration over time and precipitation of components contained in the cosmetic composition, resulting in superior aesthetics. The cosmetic composition may also contain (A) hydrolyzed gardenia extract in an amount of 0.0005 to 0.05% by mass, (B) cyanocobalamin in an amount of 0.0005 to 0.005% by mass, and (C) cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol in an amount of 0.05 to 0.5% by mass.

Description

[Technical Field]

[0001] This invention relates to cosmetics. [Background technology]

[0002] In cosmetics, colorants are sometimes used to enhance the aesthetic appeal of the product, to increase the expectation of its effects, and to conceal discoloration over time. For example, products may be colored blue to give a cool or moisturizing impression, or green to give the impression of being rich in plant-derived ingredients. Common colorants include tar dyes such as Blue No. 1 and Green No. 3, and synthetic dyes such as azulene and malachite green. These synthetic dyes have the advantage of being relatively stable to light and heat and providing beautiful color in small amounts, but they also have drawbacks, such as being petroleum-derived and some raising concerns about carcinogenicity. On the other hand, cosmetics using naturally derived colorants have been reported. For example, there have been reports of using ultramarine, an inorganic pigment, and plants containing anthocyanin pigments, such as butterfly pea. While these also contribute to the aesthetic appeal of cosmetics, inorganic pigments are water-insoluble, limiting the types of cosmetics in which they can be used, and anthocyanin-containing plants easily fade due to light, heat, and pH changes.

[0003] On the other hand, some cosmetic ingredients have color themselves and can color the cosmetic product. For example, extracts from plants contain yellow to brown components derived from polyphenols, and it is known that if these are added to a cosmetic product in amounts exceeding a certain level, the cosmetic product itself will turn yellow to brown. Examples of colored ingredients with cosmetic effects include cyanocobalamin, ubiquinone, retinol, ergothioneine, polyphenols, and their derivatives. These ingredients are used for their cosmetic effects on the skin, but they also affect the aesthetics and perceived effectiveness of the cosmetic product. However, it is also known that discoloration over time can actually impair the aesthetics and perceived effectiveness. For example, browning due to further polymerization and fading due to decomposition by light or heat are known to occur. Furthermore, it is known that these ingredients, either alone or in combination with other ingredients, can aggregate in the cosmetic product, precipitating as sediment, crystals, or suspended matter, which can impair the original cosmetic effect and aesthetics of the cosmetic product and make it unstable in terms of quality.

[0004] Given this background, methods to prevent discoloration and precipitation have been investigated. For example, in the case of polyphenol discoloration, methods include using organic reducing agents (see Patent Documents 1 and 2), incorporating a large amount of compounds containing two or more alcoholic hydroxyl groups (see Patent Document 3), using sulfuric acid derivatives, vitamin C derivatives, gallic acid, etc. (see Patent Document 4), using components derived from eucalyptus trees (see Patent Document 5), using chelating agents and amino acids (see Patent Document 6), using rosemary aqueous solution extract and catechin (see Patent Document 7), and using cyclohexanedicarboxylic acid esters (see Patent Document 8). Furthermore, in the case of polyphenol precipitation, methods such as using alkyl glucosides and / or polyglycerol fatty acid esters (see Patent Document 9) and using phosphoric acid-based surfactants (see Patent Document 10) are known.

[0005] While these inventions have shown some effectiveness, they do not have a comprehensive effect on various polyphenols, nor have there been any reports of methods that suppress both discoloration and precipitation. Therefore, there is a widespread need for methods that suppress both discoloration and precipitation. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 63-145213 [Patent Document 2] Japanese Patent Application Publication No. 1-009946 [Patent Document 3] Japanese Patent Application Publication No. 6-239716 [Patent Document 4] Japanese Patent Application Publication No. 7-025742 [Patent Document 5] Japanese Patent Application Publication No. 11-323326 [Patent Document 6] Japanese Patent Publication No. 2003-335624 [Patent Document 7] Japanese Patent Publication No. 2011-080086 [Patent Document 8] Japanese Patent Publication No. 2014-136679 [Patent Document 9] Japanese Patent Publication No. 2003-104844 [Patent Document 10] Japanese Patent Publication No. 2004-137227 [Overview of the project] [Problems that the invention aims to solve]

[0007] This invention has been made in view of the above problems, and its purpose is to provide a cosmetic product that is aesthetically superior by suppressing discoloration over time and the precipitation of components contained in the cosmetic product. [Means for solving the problem]

[0008] The inventors of the present invention discovered that cosmetics using hydrolyzed gardenia extract undergo discoloration and precipitation over time. Therefore, in order to achieve the above objective, they conducted further intensive research and found that by combining hydrolyzed gardenia extract, cyanocobalamin, and cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, a cosmetic composition that does not undergo discoloration or precipitation is obtained, thus completing the present invention.

[0009] The present invention is as follows: [1] A cosmetic product containing hydrolyzed gardenia extract, cyanocobalamin, and cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol. [2] In cosmetics, (A) Hydrolyzed gardenia extract is 0.0005 to 0.05% by mass, (B) Cyanocobalamin is present in a concentration of 0.0005 to 0.005% by mass. (C) The cosmetic composition described in [1] above, wherein the amount of cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol is 0.05 to 0.5% by mass. [Effects of the Invention]

[0010] The present invention makes it possible to provide cosmetics with superior aesthetics by suppressing discoloration and precipitation of components contained in the cosmetics over time. [Modes for carrying out the invention]

[0011] The cosmetic composition according to this embodiment will be described below, but the present invention is not limited to the following embodiments. The present invention is not limited to each of the configurations described below, and various modifications are possible within the scope of the claims, and embodiments and examples obtained by appropriately combining the technical means disclosed in different embodiments and examples are also included in the technical scope of the present invention. In addition, unless otherwise specified in this specification, "A~B" representing a numerical range means "A or more, B or less". In addition, unless otherwise specified in this specification, "A%" representing a ratio means "A by mass%".

[0012] <Cosmetic> The cosmetic according to this embodiment contains (A) hydrolyzed gardenia extract, (B) cyanocobalamin, and (C) bis(ethoxydiglycol) cyclohexane-1,4-dicarboxylate. etc.

[0013] <Hydrolyzed gardenia extract> The component (A) in the cosmetic according to this embodiment is hydrolyzed gardenia extract. Hydrolyzed gardenia extract is obtained by hydrolyzing an extract composed of fractions extracted from the fruits of gardenia and from the fruits of gardenia with water, ethanol, butylene glycol, etc. using an acid or an enzyme, etc. During the process of this hydrolysis, the color of the components changes to blue or green. It is a water-soluble component, and commercially available products can be used as raw materials for foods and cosmetics. Hydrolyzed gardenia extract is used as a colorant for coloring cosmetics blue or as an antioxidant, but depending on the storage conditions and the combination with other components of the cosmetics when added to the cosmetics, it has been confirmed that fading occurs and it becomes light blue, or precipitation occurs and a gray to blue precipitate is formed.

[0014] The blending amount of the component (A) contained in the cosmetic according to this embodiment is preferably 0.0005 to 0.05% by mass in the cosmetic in terms of the cosmetic display name "hydrolyzed gardenia extract". If the blending amount of the component (A) is 0.0005% by mass or more, a sufficient coloring effect on the product can be obtained. Also, if the blending amount of the component (A) is 0.05% by mass or less, it is possible to suppress the decrease in aesthetic quality due to the color of the cosmetic being too strong, and the discomfort that the skin appears significantly colored blue or green due to the remaining cosmetic on the skin after use.

[0015] <Cyanocobalamin> Component (B) in the cosmetic composition according to this embodiment is cyanocobalamin. Cyanocobalamin is a component with a porphyrin structure, also known as vitamin B12, and its aqueous solution exhibits a vivid pink to red color. In cosmetics, it is used as an anti-inflammatory component or a coloring component. Vitamin B12 can be synthesized industrially from petroleum or by fermentation using microorganisms, and is generally sold as a raw material for cosmetics. In the cosmetic composition according to this embodiment, cyanocobalamin prevents discoloration and precipitation of hydrolyzed gardenia extract. The reason why cyanocobalamin has such effects is not clear, but it is presumed that it suppresses oxidation and polymerization of hydrolyzed gardenia extract by trapping radicals and oxides caused by the porphyrin structure, or by trapping metal ions in the cosmetic composition through a chelating effect, thereby suppressing discoloration and precipitation.

[0016] The amount of component (B) in the cosmetic composition according to this embodiment is preferably 0.0005 to 0.005% by mass in the cosmetic composition. If the amount of component (B) is 0.0005% by mass or more, a sufficient anti-fading and precipitation suppression effect can be obtained. If the amount of component (B) is 0.005% by mass or less, the coloring of the cosmetic composition will not become too strong and the aesthetic properties derived from component (A) will not be impaired.

[0017] <Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol> Component (C) in the cosmetic composition according to this embodiment is cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol. Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol is a divalent carboxylic acid ester that has a polyoxyethylene moiety and a cyclohexane moiety and functions as an amphiphilic molecule, and is commonly used as a humectant and texture modifier. It is possible to use a product that is commonly sold as a raw material for cosmetics or quasi-drugs. In the cosmetic composition according to this embodiment, a new effect was discovered in component (C) that it can suppress the discoloration and precipitation of hydrolyzed gardenia extract. The reason why cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol has such an effect is not clear, but it is presumed that it suppresses polymerization by inhibiting the association and aggregation of intermolecular molecules of hydrolyzed gardenia extract, and as a result suppresses discoloration and precipitation.

[0018] The amount of component (C) in the cosmetic composition according to this embodiment is preferably 0.05 to 0.5% by mass. If the amount of component (C) is 0.05% by mass or more, a sufficient anti-fading and anti-precipitation effect can be obtained. Furthermore, if the amount of component (C) is 0.5% by mass or less, the cosmetic composition will not become sticky.

[0019] <Other ingredients> In addition to the components described above, the cosmetic composition according to this embodiment may contain other components as appropriate, within the limits that do not impair the objectives of the present invention, such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, oils, emollients, polymer compounds, thickeners, polysaccharides, powders (pigments, resins, pigments), preservatives, fragrances, humectants, physiologically active ingredients, mineral salts, solvents, antioxidants, chelating agents, pearlescent agents, neutralizing agents, pH adjusters, plant extracts, enzymes, vitamins, amino acids, etc.

[0020] Furthermore, the cosmetic composition according to this embodiment may contain physiologically active ingredients as appropriate, as long as it does not impair the objectives of the present invention. Physiologically active substances are substances that, when applied to the skin, provide some kind of physiological activity to the skin. Examples include whitening agents, anti-inflammatory agents, anti-aging agents, UV protection agents, astringents, antioxidants, blood circulation promoters, antibacterial agents, disinfectants, cooling agents, warming agents, wound healing promoters, irritation relievers, analgesics, and cell activators.

[0021] The cosmetic composition according to this embodiment can be manufactured according to conventional methods. Examples of the cosmetic composition according to this embodiment include lotions, emulsions, creams, serums, gels, sheet masks, makeup, body lotions, body gels, body creams, facial soaps, facial foams, body washes, cleansing agents, makeup bases, shampoos, conditioners, treatments, hair packs, hair styling products, and hair oils. The dosage form can also be arbitrarily selected according to the purpose. Examples include liquid, cream, gel, emulsion, sheet, stick, and aerosol forms. The cosmetic composition according to this embodiment is not limited to general cosmetics, but also includes quasi-drugs, designated quasi-drugs, and topical pharmaceuticals. [Examples]

[0022] Next, the present invention will be described in detail based on examples, but is not limited thereto. Prior to the examples, the test methods and evaluation methods used in each example will be described.

[0023] (Evaluation test for fade resistance) <Evaluation Method> After preparing the cosmetic compositions for the examples and comparative examples, they were stored in a 50°C incubator for one month. To evaluate the change in color, the cosmetic compositions before and after storage were placed in a 1 cm thick quartz cell, and the Lab values ​​were measured using a colorimeter (ZE6000, manufactured by Nippon Denshoku). The color difference ΔE* calculated from these values ​​using the following formula was used to classify the compositions using the following scoring system. <Method for calculating ΔE*, which represents the degree of fading> ΔE*=(ΔL 2 +Δa2 +Δb 2 ) 1 / 2 Here, ΔL = (L* after -L* before ), Δa = (a* after -a* before ), Δb = (b* after -b* before ). <Evaluation Criteria for Fading Inhibition> ◎: ΔE* was 0 or more and less than 0.5. ○: ΔE* was 0.5 or more and less than 1.5. △: ΔE* was 1.5 or more and less than 3. ×: ΔE* was 3 or more.

[0024] (Evaluation Test for Precipitation Inhibition) <Evaluation Method> After preparing the cosmetics of the examples and comparative examples, they were added to a cylindrical glass container with a diameter of 2 cm and then stored inside a thermostat at 50°C for 1 month. As an evaluation of precipitation occurrence, the cosmetics after storage were visually observed to confirm precipitates. Further, after the cosmetics after storage were mixed by being inverted 10 times, filtration was performed with filter paper, and what remained on the filter paper was visually observed. The evaluation of precipitation inhibition was classified according to the following evaluation criteria. <Evaluation Criteria for Precipitation Inhibition> ◎: No precipitates were detected visually. There was also no colored substance that could be confirmed visually on the filter paper after filtration. ○: No precipitates were detected visually. On the filter paper after filtration, a very small amount of colored residue remained. △: A very small amount of precipitates were detected visually. On the filter paper after filtration, a slightly colored residue remained. ×: Colored residues remained both visually and on the filter paper after filtration.

[0025] <Examples 1 to 11 and Comparative Examples 1 to 3> The cosmetics in the formulations of Examples 1 to 11 and Comparative Examples 1 to 3 shown in Tables 1 and 2 were adjusted by a conventional method and evaluated by each test method. The results are shown together in Tables 1 and 2.

[0026] [Table 1]

[0027] [Table 2]

[0028] As is clear from Tables 1 and 2, the cosmetics of Examples 1 to 11 all exhibited excellent performance. On the other hand, Comparative Examples 1 to 3, which lacked one of the essential components, were inferior in either the effect of improving skin elasticity or the effect of improving skin transparency, and thus failed to achieve the objective of the present invention.

[0029] The following are other formulations of the cosmetic composition of the present invention as examples of implementation. These examples of cosmetic compositions not only exhibit excellent aesthetics, but also, upon examination of the aforementioned color-fading inhibition and precipitation inhibition effects, they were found to possess excellent properties in both aspects.

[0030] Example 12 (Sheet Pack) (1) Hydrolyzed gardenia extract 0.002% (2) Cyanocobalamin 0.003% (3) Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol 0.5% (4) Niacinamide 0.2% (5) Rice bran extract 0.01% (6) Bilberry leaf extract 0.01% (7) Pomegranate fruit extract 0.05% (8) Glycerin 5.0% (9) 1,3-Butylene glycol 7.0% (10) Propanediol 2.0% (11) Dipropylene glycol 2.0% (12) Pentylene glycol 0.5% (13) Sorbitol 0.5% (14) Maltitol 0.5% (15) Polyglycerin-6 0.5% (16) Disodium edetate 0.005% (17) Sodium citrate 0.05% (18) Potassium hydroxide 0.01% (19) Carboxyvinyl polymer 0.03% (20) Xanthan gum 0.05% (21) PEG-60 Hydrogenated Castor Oil 0.2% (22) Polysorbate 20 0.1% (23) PPG-13 Decyltetradeceth-24 0.2% (24) PEG-11 Methyl Ether Dimethicone 0.1% (25) Ethanol 0.2% (26) Tocopherol 0.1% (27) Phenoxyethanol 0.3% (28) Methylparaben 0.05% (29) Purified water remainder

[0031] (Manufacturing method) (1) to (17) and (19) to (28) were added to (29) and dissolved uniformly. (18) was then added and dissolved uniformly to prepare a beauty serum for sheet masks. This beauty serum was impregnated into a nonwoven fabric made of Bemliese to prepare a sheet mask.

[0032] Example 13 (Sheet Pack) (1) Hydrolyzed gardenia extract 0.0175% (2) Cyanocobalamin 0.0025% (3) Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol 0.3% (4) Betaine 1.5% (5) PEG / PPG / Polybutylene Glycol -8 / 5 / 3 Glycerin 0.5% (6) Glycerin 3.0% (7) 1,3-Butylene glycol 10.0% (8) Propanediol 2.0% (9) Dipropylene glycol 5.0% (10) Diglycerin 0.5% (11) Glycosyl trehalose 0.1% (12) Hydrolyzed hydrogenated starch 0.05% (13) Dipotassium phosphate 0.01% (14) HEDTA-3Na 0.01% (15) Sodium phosphate 0.05% (16) Sodium hydroxide 0.01% (17) (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer 0.03% (18) Xanthan gum 0.1% (19) PEG-60 Hydrogenated Castor Oil 0.4% (20) Polysorbate 20 0.15% (21) Phenoxyethanol 0.5% (22) Methylparaben 0.05% (23) Ethylhexylglycerin 0.5% (24) Purified water remainder

[0033] (Manufacturing method) (1) to (23) were added to (24) and uniformly dissolved to prepare a beauty serum for sheet masks. This beauty serum was impregnated into a rayon nonwoven fabric to prepare a sheet mask.

[0034] Example 14 (Lotion) (1) Hydrolyzed gardenia extract 0.02% (2) Cyanocobalamin 0.005% (3) Bisethoxydiglycol cyclohexane-1,4-dicarboxylic acid 0.2% (4) Inositol 0.6% (5) PEG-12 0.5% (6) PEG-75 1.5% (7) 1,3-Butylene glycol 6.5% (8) Dipropylene glycol 4.0% (9) Squalane 0.01% (10) Dimethicone 0.05% (11) PEG-60 hydrogenated castor oil 0.1% (12) PEG-20 Glyceryl Triisostearate 0.5% (13) Xanthan gum 0.05% (14)(Acrylates / Alkyl Acrylate) (C10-30) Copolymer 0.02% (15) Hydrolyzed elastin 0.01% (16) α-Glucan 0.001% (17) Glucosylceramide 0.02% (18) Sodium chondroitin sulfate 0.1% (19) N-acetylglucosamine 0.01% (20) Ceramide NG 0.001% (21) Hydrolyzed collagen 0.001% (22) Sodium L-stearoyl glutamate 0.1% (23) Phenoxyethanol 0.6% (24) Methylparaben 0.01% (25) Purified water remainder

[0035] (Manufacturing method) (1) to (8), (11) to (19) and (21) to (24) were added to (25), heated to 80°C while stirring, and uniformly dissolved (Solution A). (9), (10) and (20) were heated to 80°C and uniformly dissolved (Solution B). Solution B was added to Solution A, stirred and mixed until uniform, then cooled to 35°C to prepare the lotion.

Claims

1. A cosmetic comprising (A) hydrolyzed gardenia extract, (B) cyanocobalamin, and (C) cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol.

2. In cosmetics, (A) Hydrolyzed gardenia extract is 0.0005 to 0.05% by mass, (B) The amount of cyanocobalamin is 0.0005 to 0.005% by mass, (C) The cosmetic composition according to claim 1, wherein the amount of cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol is 0.05 to 0.5% by mass.

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