Skin cosmetics

Abstract

The present invention provides a skin cosmetic containing cyanocobalamin that provides a moisturizing effect while also improving skin elasticity, caring for pores, and enhancing skin texture and radiance. [Solution] The skin cosmetic comprises (A) cyanocobalamin, (B) sugar alcohol, and (C) nonionic surfactant. Furthermore, the skin cosmetic may have at least one component (B) selected from inositol, maltitol, and sorbitol, and component (C) may have at least one component selected from polyoxyethylene sorbitan fatty acid ester and polyoxyethylene hydrogenated castor oil.

Description

Technical Field

[0001] The present invention relates to skin cosmetics.

Background Art

[0002] Colorants used in skin cosmetics include synthetic organic pigments, natural pigments, inorganic pigments, polymer powders, and the like. It is known that by blending these, it has the effect of adding color to the skin and making the skin beautiful and attractive. In recent years, there has been an increase in skin cosmetics that are colored not only in the container but also in the formulation to make them colorful and create a sense of excitement for consumers.

[0003] From the perspective of irritation, among colorants, those colored with natural pigments are considered to give consumers a sense of security. And cyanocobalamin can be used to color in pink, which has a psychological effect of creating a sense of excitement.

[0004] By blending cyanocobalamin into the formulation, in addition to the coloring effect, skin care effects such as improvement and prevention of rough skin, or improvement of dullness of the skin, and improvement of the transparency of the skin have been reported (Patent Documents 1 and 2). However, these skin cosmetics do not sufficiently have the skin care effects required by consumers, and skin cosmetics having a moisturizing feeling, increased elasticity, pore care, and a smooth and glossy effect are desired.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] 6] This invention has been made in view of the above circumstances, and aims to provide a skin cosmetic containing cyanocobalamin that provides a moisturizing sensation while also improving skin elasticity, caring for pores, and enhancing skin texture and radiance. [Means for solving the problem]

[0007] The skin cosmetic composition according to the present invention comprises (A) cyanocobalamin, (B) sugar alcohol, and (C) nonionic surfactant.

[0008] The skin cosmetic composition according to the present invention may contain at least one of the following: (B) component is selected from inositol, maltitol, and sorbitol.

[0009] The skin cosmetic composition according to the present invention may contain at least one of the following: (C) component is selected from polyoxyethylene sorbitan fatty acid ester and polyoxyethylene hydrogenated castor oil. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a skin cosmetic that provides a moisturizing sensation while also improving skin elasticity, caring for pores, and enhancing skin texture and radiance. [Modes for carrying out the invention]

[0011] The following describes the skin cosmetic composition according to this embodiment. The present invention is not limited to the following embodiments. The present invention is not limited to the configurations described below, and various modifications are possible within the scope of the claims. Embodiments and examples obtained by appropriately combining the technical means disclosed in different embodiments and examples are also included within the technical scope of the present invention. Furthermore, unless otherwise specified in this specification, "A to B" representing a numerical range means "greater than or equal to A and less than or equal to B".

[0012] The skin cosmetic composition according to this embodiment comprises (A) cyanocobalamin, (B) sugar alcohol, and (C) nonionic surfactant.

[0013] <(A) Cyanocobalamin> The component (A) used in the skin cosmetic 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.

[0014] In the skin cosmetic composition according to this embodiment, cyanocobalamin, which is component (A), provides moisture and elasticity to the skin and has effects on pore care and skin texture. The amount of component (A) is not particularly limited, but is preferably 0.0001% to 2% by mass relative to the total mass of the skin cosmetic composition. If the amount of component (A) is 0.0001% by mass or more, it is possible to sufficiently provide moisture and elasticity to the skin and obtain sufficient effects on pore care and skin texture. On the other hand, if the amount of component (A) is 2% by mass or less, stickiness and precipitation of cyanocobalamin are suppressed, and the skin becomes well moisturized. From the viewpoint of usability, the amount of component (A) is more preferably 0.0002% to 1% by mass, and even more preferably 0.0005% to 0.01% by mass.

[0015] <(B) Sugar alcohols> Component (B) used in the skin cosmetic according to this embodiment is a sugar alcohol. Sugar alcohols are polyhydric alcohols derived from sugars that have five or more hydroxyl groups in their molecule. Examples include inositol, maltitol, sorbitol, mannitol, glucose, xylitol, and fructose. From the viewpoint of providing moisture, elasticity, and luster to the skin, inositol, maltitol, and sorbitol are preferred as sugar alcohols. Furthermore, the sugar alcohol as component (B) may be used alone, or two or more may be used in combination.

[0016] In the skin cosmetic composition according to this embodiment, the amount of component (B) is preferably 0.01% to 15.0% by mass relative to the total amount of the skin cosmetic composition. From the viewpoint of usability, the amount of component (B) is more preferably 0.1% to 10.0% by mass, and even more preferably 0.5% to 8.0% by mass. If the amount of component (B) is 0.01% by mass or more, sufficient moisture, skin elasticity and gloss effect can be obtained, and if it is 15% by mass or less, stickiness on the skin can be sufficiently suppressed.

[0017] (C) Nonionic surfactant Component (C) used in the skin cosmetic according to this embodiment is a nonionic surfactant. The nonionic surfactant is not particularly limited as long as it can be incorporated into skin cosmetics as usual, and one or more types can be used. Examples of such nonionic surfactants include sucrose fatty acid esters, glycerin mono fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Examples include ethylene glycerin fatty acid esters, polyoxyethylene castor oils, polyoxyethylene hydrogenated castor oils, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, glycerin-modified silicones, polyglycerin-modified silicones, and polyether-modified silicones. Among these, at least one selected from polyoxyethylene sorbitan fatty acid esters and polyoxyethylene hydrogenated castor oil is preferred in combination with the above-mentioned components (A) and (B) to further enhance the moisturizing and glossing effects.

[0018] The skin cosmetic according to this embodiment, by containing the above-mentioned components (A) to (C), can provide a moisturizing sensation while also improving skin elasticity, pore care, and enhancing skin texture and radiance.

[0019] <Other ingredients> The skin cosmetic according to this embodiment can be appropriately blended with other components, such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, oils, polymer compounds, thickeners, powders (dyes, resins, pigments), preservatives, fragrances, moisturizers, physiologically active ingredients, mineral salts, solvents, antioxidants, chelating agents, pearlescing agents, neutralizing agents, pH adjusters, plant extracts, enzymes, vitamins, amino acids, etc., as long as the object of the present invention is not impaired.

[0020] In addition, in the skin cosmetic according to this embodiment, physiologically active ingredients can be appropriately blended as long as the object of the present invention is not impaired. A physiologically active substance is a substance that imparts some physiological activity to the skin when applied to the skin. Examples thereof include whitening agents, anti-inflammatory agents, anti-aging agents, ultraviolet ray protectants, astringents, antioxidants, blood circulation promoters, antibacterial agents, bactericides, cooling agents, warming agents, wound healing promoters, irritation relievers, analgesics, cell activators, and the like.

[0021] The skin cosmetic according to this embodiment can be produced according to a conventional method. Examples of the skin cosmetic according to this embodiment include lotions, milky lotions, creams, beauty essences, gels, sheet masks, makeup, body lotions, body gels, body creams, facial cleansing soaps, facial cleansing foams, body soaps, cleansing agents, makeup bases, and the like. The dosage form can also be arbitrarily selected according to the purpose. That is, examples thereof include liquid, cream, gel, milky lotion, sheet, stick, aerosol, and the like. The skin cosmetic according to this embodiment is not limited to general skin cosmetics, but includes quasi-drugs, designated quasi-drugs, external medicines, and the like. The skin cosmetic according to this embodiment can select the dosage form according to the purpose as described above.

Example

[0022] Next, the embodiments disclosed in this application will be specifically described. However, this example is merely for explaining the embodiment and does not limit or represent limiting the scope of the invention disclosed in this application. Prior to the examples, the test methods and evaluation methods employed in each example will be described.

[0023] For the five expert panel members, after performing their usual facial cleansing, they took 3 mL of either the example or comparative example skin cosmetic, applied it to their face, and evaluated it after it had absorbed.

[0024] [1] Skin moisture evaluation test (Test method) The skin after applying the skin cosmetic of the example or comparative example was evaluated according to the following evaluation criteria, and the average value was used as the test result. <Evaluation Criteria> 5: I felt a great sense of moisture in my skin after applying it. 4: I felt a slight moisturizing effect on my skin after applying it. 3: I felt a very slight moisturizing sensation on my skin after applying it. 2: I didn't feel much moisture in my skin after applying it. 1: I didn't feel any moisturizing effect on my skin after applying it. <Judgment criteria> ◎: Average value is 4.0 or higher ○: Average value is 3.0 or higher but less than 4.0 △: Average value is 2.0 or higher but less than 3.0 ×: Average value is less than 2.0

[0025] [2] Skin elasticity evaluation test (Test method) Five volunteers were asked to rest for 10 minutes in a room at 22°C and 50% RH after washing their faces, and their skin elasticity was measured using a Cutemeter (MPA580, manufactured by Courage+Khazaka) at R7. before The elasticity of the skin was measured. Then, 1.0 mL of the skin cosmetic of the example or comparative example was applied to half of the face, and after resting for 10 minutes, the skin elasticity R7 was measured again with the Cutemeter. after The following measurements were taken. The percentage change in skin elasticity before and after application was calculated using the following formula, and the average value of 5 subjects was used to classify them using the following scoring system. <Contents of the scoring for evaluating skin elasticity> ΔR7=(R7 after -R7 before ) × 100 <Judgment criteria> ◎: The average score of the 5 participants was 105% or higher. ○: The average score of the 5 participants was between 95% and 105%. ×: The average score of the 5 students was less than 95%.

[0026] [3] Evaluation test of the effectiveness of skin pore care (Test method) Five volunteers had their cheeks washed with soap, then acclimatized for 20 minutes in an environment of 25°C and 50% relative humidity. After that, the surface morphology of their skin was measured using a VISIA skin image analyzer (Canfield Scientific). Subsequently, 1.0 ml of either the example or comparative example skin cosmetic was applied to half of the face, and after 10 minutes of rest, the surface morphology of the skin was measured again. The evaluation was classified using the average reduction in the number of visible pores of the five volunteers before and after application, with the following scoring system. <Judgment criteria> ◎: The average reduction in pore size among the 5 participants was 20 or more. ○: The average reduction in pore size among the 5 participants was between -5 and -20. ×: The average reduction in pore size among the 5 participants was less than -5.

[0027] [4] Skin texture improvement test (Test method) The skin after applying the skin cosmetic of the example or comparative example was evaluated according to the following evaluation criteria, and the average value was used as the test result. <Evaluation Criteria> 5: I really noticed an improvement in the texture of my skin after applying it. 4: I felt a slight improvement in the texture of my skin after applying it. 3: I felt a very slight improvement in the texture of my skin after applying it. 2: I didn't really notice any improvement in skin texture after applying it. 1: I didn't notice any improvement in skin texture after applying it. <Judgment criteria> ◎: Average value is 4.0 or higher ○: Average value is 3.0 or higher but less than 4.0 △: Average value is 2.0 or higher but less than 3.0 ×: Average value is less than 2.0

[0028] [5] Skin gloss effect evaluation test (Test method) The skin after applying the skin cosmetic of the example or comparative example was evaluated according to the following evaluation criteria, and the average value was used as the test result. <Evaluation Criteria> 5: I really noticed the glowing effect on my skin after applying it. 4: I noticed a slight glossy effect on my skin after applying it. 3: I noticed a very slight glossy effect on my skin after applying it. 2: I didn't really notice much of a glossy effect on my skin after applying it. 1: I didn't notice any shine or gloss effect on my skin after applying it. <Judgment criteria> ◎: Average value is 4.0 or higher ○: Average value is 3.0 or higher but less than 4.0 △: Average value is 2.0 or higher but less than 3.0 ×: Average value is less than 2.0

[0029] <Examples 1-5 and Comparative Examples 1-4> The cosmetic formulations for each of the examples 1-5 and comparative examples 1-4 shown in Table 1 were prepared by conventional methods and evaluated using the respective test methods. The results are also shown in Table 1.

[0030] [Table 1]

[0031] As is clear from Table 1, all of the skin cosmetics in Examples 1-5 exhibited excellent performance. On the other hand, Comparative Examples 1-5, which lacked one or more of the constituent components, were inferior in terms of moisturizing effect, skin elasticity, pore care, skin texture, or gloss effect.

[0032] The following are examples of other formulations of skin cosmetics. These skin cosmetics were also examined for the aforementioned moisturizing effect, lack of stickiness, and lack of greasiness, and all exhibited excellent properties, proving to be satisfactory.

[0033] Formulation Example 1 (Lotion) (by mass) (1) Isopropylmethylphenol 0.1% (2) Dipotassium glycyrrhizinate 0.1% (3) Ascorbyl glucoside 0.1% (4) Cyanocobalamin 0.001% (5) Polyethylene glycol 4000 1.0% (6) Maltitol 2.0% (7) Raspberry extract 0.3% (8) Lemon extract 0.1% (9) Sage extract 0.2% (10) Chamomile flower extract 0.1% (11) Aloe vera extract 0.1% (12) PEG-75 0.3% (13) Dipropylene glycol 10.5% (14) Ethanol 3.0% (15) Dimethicone 0.2% (16) Caprylic / Capric Triglyceride 0.1% (17) PEG-60 Hydrogenated Castor Oil 0.1% (18) Pullulan 0.5% (19) Xanthan gum 0.05% (20)(Acrylates / Alkyl Acrylate) (C10-30) Copolymer 0.05% (21) Green tea extract 0.01% (22) Sodium hyaluronate 0.001% (23) Monopotassium phosphate 0.02% (24) Sodium chondroitin sulfate 0.1% (25) N-acetylglucosamine 0.01% (26) Saccharomyces / rice ferment filtrate 0.1% (27) Disodium edetate 0.05% (28) Hydrolyzed collagen 0.001% (29) Water-soluble collagen 0.001% (30) Pentylene glycol 0.5% (31) Hydroxyacetophenone 0.1% (32) Sodium L-stearoyl glutamate 0.2% (33) Phenoxyethanol 0.01% (34) Methylparaben 0.01% (35) Purified water remainder

[0034] (Manufacturing method) (1) to (13) and (18) to (34) were added to (35) and stirred to dissolve uniformly (Solution A). (14) to (17) were heated to 40°C and then dispersed uniformly (Solution B). Solution B was added to Solution A and stirred with a propeller until uniform, then cooled to 30°C to prepare a slightly cloudy lotion.

[0035] Prescription example 2 (sheet mask) (1) Tranexamic acid 1.0% (2) Dipotassium glycyrrhizinate 0.1% (3) Disodium ascorbate sulfate 0.1% (4) Cyanocobalamin 0.005% (5) Betaine 0.5% (6) Inositol 1.0% (7) Lemon extract 0.1% (8) Sage extract 0.2% (9) Chamomile flower extract 0.1% (10) Aloe vera extract 0.3% (11) Dipropylene glycol 1.5% (12) Glycerin 5.0% (13) 1,3-Butylene glycol 7.0% (14) Propanediol 1.0% (15) Citric acid 0.05% (16) Potassium hydroxide 0.005% (17) Polyoxyethylene hydrogenated castor oil 0.2% (18) Polyoxyethylene monolaurate Sorbitan (20% E.O.) 0.1% (19) Polysorbate 20 0.2% (20) HEDTA-3 sodium 0.01% (21) Disodium edetate 0.005% (22) Sodium pyrosulfite 0.001% (23) Cyclohexanedicarboxylic acid bisethoxydiglycol 0.3% (24) Carboxyvinyl polymer 0.1% (25) Xanthan gum 0.1% (26) PEG-20 0.9% (27) PEG-75 0.6% (28) Phenoxyethanol 0.2% (29) Methylparaben 0.05% (30) White birch sap 0.1% (31) PPG-13 Decyltetradeceth-24 0.1% (32) Heparin-like substance 0.005% (33) Nicotinamide 0.2% (34) Centella Asiatica Extract 0.05% (35) Retinyl palmitate 0.01% (36) Purified water remainder

[0036] (Manufacturing method) (1) to (31) were added to a portion of (36) and dispersed with a propeller until uniformly dissolved (Solution A). (32) to (35) were added to the remaining portion of (36) and dispersed with a propeller until uniformly dissolved (Solution B). Solution B was added to Solution A and uniformly dissolved to prepare a beauty serum for sheet masks. This beauty serum was impregnated into a cotton nonwoven fabric to prepare sheet masks.

[0037] Formula Example 3 (Beauty Serum) (by mass) (1) 3-O-ethyl ascorbic acid 0.1% (2) Ascorbic acid 2-glucoside 0.1% (3) Ascorbyl glucoside 0.1% (4) Cyanocobalamin 0.003% (5) Betaine 2.0% (6) Polyethylene glycol 4000 0.5% (7) Sorbitol 3.0% (8) Raspberry extract 0.05% (9) Sage extract 0.2% (10) Chamomile flower extract 0.1% (11) Lemon extract 0.05% (12) Aloe vera extract 0.05% (13) Saccharomyces / rice ferment filtrate 0.1% (14) Nicotinamide 7.0% (15) Cyclohexane-1,4-dicarboxylic acid Bisethoxydiglycol 0.3% (16) PEG / PPG / Polybutylene Glycol -8 / 5 / 3 Glycerin 0.2% (17) Polysorbate 20 0.3% (18) Sodium cetyl sulfate 0.2% (19) Sodium stearoyl glutamate 0.2% (20) Carboxyvinyl polymer 0.1% (21) Sodium polyacrylate 0.02% (22) Stearic acid 0.2% (23) Monoglyceryl stearate 0.1% (24) Behenyl alcohol 0.1% (25) Mineral oil 0.5% (26) Ceramide II 0.0001 (27) Glyceryl caprylate 0.1% (28) Vaseline 0.1% (29) Jojoba oil 0.5% (30) Squalane 0.5% (31) Sorbitan isostearate 0.1% (32) Tocopherol acetate 0.1% (33) Human stem cell culture medium 0.001% (34)Fragrance 0.05% (35) Phenoxyethanol 0.6% (36) Methylparaben 0.1% (37) Purified water remainder

[0038] (Manufacturing method) (1) to (21) were added to (37) and heated to 70°C to dissolve uniformly (Solution A). (22) to (32) were heated to 70°C and then dissolved uniformly (Solution B). Solution A was added to Solution B and dispersed using a homomixer until uniform, then cooled to 50°C (Solution C). (33) to (36) were added to Solution C and dispersed further using a homomixer until uniform, then cooled to 32°C to prepare the beauty serum.

Claims

1. (A) Cyanocobalamin and (B) Sugar alcohols and (C) Nonionic surfactants and Skin cosmetics containing [this ingredient].

2. (B) The skin cosmetic composition according to claim 1, wherein component (B) is at least one selected from inositol, maltitol, and sorbitol.

3. The skin cosmetic composition according to claim 1 or 2, wherein component (C) is at least one selected from polyoxyethylene sorbitan fatty acid ester and polyoxyethylene hydrogenated castor oil.

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