Skin cosmetic

Abstract

To provide a skin cosmetic that delivers effects in enhancing skin elasticity as well as tightening the skin and pores, and further induces no irritation to the skin.SOLUTION: A skin cosmetic comprises: (A) one or more selected from the group consisting of ascorbic acid and ascorbic acid derivatives; (B) sage extract; and (C) one or more plant extracts having astringency (excluding sage extract) selected from the group consisting of chamomile flower extract, aloe vera extract, hamamelis leaf extract, tea leaf extract, and lemon fruit extract.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a skin cosmetic. [Background technology]

[0002] Traditionally, skin care products that give firmness to the skin and increase elasticity have often been suggested to people who suffer from sagging skin as they age. However, in recent years, even young people have been suffering from skin problems such as enlarged and more noticeable pores, and there is a demand for skin care products that give firmness to the skin and tighten pores, even for the younger generation.

[0003] Against this background, various studies have been conducted on basic cosmetics that tighten the skin and pores, and skin cosmetics using aloe extracts are known (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-301842 [Patent Document 2] Japanese Patent Application Publication No. 11-005724 Summary of the Invention [Problem to be solved by the invention]

[0005] The skin cosmetics of the above-mentioned prior art are considered to have a certain effect as cosmetics that tighten the skin and pores, but they do not fully enhance the elasticity of the skin and tighten the skin and pores. In addition, protein astringency is generally used to tighten the skin, but the irritation to the skin caused by protein denaturation is an issue, and these issues have not been investigated. In this context, there is a strong demand for skin cosmetics that enhance the elasticity of the skin and tighten the skin and pores, while also not irritating the skin.

[0006] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a skin cosmetic which enhances the elasticity of the skin and has the effect of tightening the skin and pores, while not causing any irritating feeling to the skin. [Means for solving the problem]

[0007] The present inventors have further studied in order to solve the above problems, and have found that a cosmetic composition that has the effect of increasing skin elasticity and tightening skin and pores but does not irritate the skin can be obtained by combining one or more selected from the group consisting of ascorbic acid and its derivatives with sage extract and one or more plant extracts having an astringent effect selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract and lemon fruit extract, and has completed the present invention.Furthermore, it has been found that a sheet pack that can keep the cosmetic composition on the skin for a long time in order to enhance the beauty effect on the skin can further increase the elasticity of the skin and tighten the skin and pores, while at the same time, it can be applied for a long time without causing irritation to the skin, and has completed the present invention.

[0008] The skin cosmetic of the present invention comprises: (A) one or more selected from the group consisting of ascorbic acid and ascorbic acid derivatives; (B) sage extract; (C) one or more plant extracts having an astringent effect selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract, and lemon fruit extract; Includes.

[0009] Furthermore, the skin cosmetic of the present invention may be a sheet pack. Effect of the Invention

[0010] According to the present invention, it is possible to provide a skin cosmetic which enhances the elasticity of the skin, has the effect of tightening the skin and pores, and further has no irritating feeling to the skin. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The skin cosmetic composition according to this embodiment combines one or more selected from the group consisting of ascorbic acid and ascorbic acid derivatives, sage extract, and one or more plant extracts having an astringent effect selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract, and lemon fruit extract.

[0012] <(A) One or more members selected from the group consisting of ascorbic acid and ascorbic acid derivatives> Component (A) is one or more selected from the group consisting of ascorbic acid and ascorbic acid derivatives. Ascorbic acid, also known as vitamin C, is a solid substance at room temperature and is usually acidic when dissolved in water. It is a component commonly used in cosmetics as a moisturizer, antioxidant, and whitening agent, and can be synthesized from glucose, etc., by fermentation, enzyme reaction, or chemical reaction.

[0013] In addition, ascorbic acid is known to decompose over time when dissolved in an aqueous solution, and in order to increase its stability and solubility in an aqueous solution, it is generally known to be derivatized by acyl esterification of the hydroxyl group at the terminal and etherification with glucose. These ascorbic acid derivatives have the effect of increasing skin elasticity and tightening skin and pores, similar to ascorbic acid. In addition, ascorbic acid and its derivatives may be in the form of salts in order to improve the ease of handling during production and the stability. Examples of salts of ascorbic acid and its derivatives contained in the skin cosmetic according to this embodiment include sodium ascorbate, potassium ascorbate, and disodium L-ascorbyl sulfate. From the viewpoint of preventing deterioration of the skin cosmetic over time, L-ascorbic acid 2-glucoside and disodium L-ascorbyl sulfate are preferred as the (A) component.

[0014] It is believed that component (A) ultimately improves skin elasticity due to its antioxidant effects and cosmetic effects on the skin. It is also believed that the antioxidant and anti-inflammatory effects work synergistically with the acidic pH level to enhance the astringent effect of component (C), which will be described later, that tightens the skin and pores.

[0015] The amount of component (A) in the skin cosmetic according to this embodiment is preferably 0.001 to 1.0% by mass (hereinafter, unless otherwise specified, mass %) calculated as solid content. If the amount of component (A) is 0.001% or more, it can fully exert the effect of improving skin elasticity and tightening skin and pores. Also, if the amount of component (A) is 1.0% or less, it can fully suppress the stickiness of the skin cosmetic.

[0016] <(B) Sage Extract> Component (B) is a sage extract. Sage (scientific name: Salvia officinalis) is a plant of the Lamiaceae family, also known as salvia officinalis, and has been used as an herb since ancient times. The sage extract contained in the skin cosmetic composition according to this embodiment can be obtained by extraction from the whole plant or leaves of sage using water, hot water, alcohol, polyol, or a mixed solution thereof, and any of those commercially available products intended for incorporation into cosmetics can be used.

[0017] In the skin cosmetic composition according to this embodiment, component (B) has the effect of increasing the elasticity of the skin, and can significantly reduce the irritation to the skin caused by the astringent action of components (A) and (C). This is presumably because the sage extract has antioxidant and anti-inflammatory effects on the skin, preventing the irritation caused by protein astringency.

[0018] The amount of the (B) component in the skin cosmetic according to this embodiment is preferably 0.0001 to 0.01% in terms of solid content. If the amount of the (B) component is 0.0001% or more, it can fully improve the elasticity of the skin and reduce the irritation. If the amount of the (B) component is 0.01% or less, it can fully suppress the stickiness of the skin cosmetic and the coloring of the skin cosmetic by the extract.

[0019] <(C) One or more plant extracts having an astringent effect selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract, and lemon fruit extract> Component (C) is one or more plant extracts having an astringent effect selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract, and lemon fruit extract. All of these are plant-derived extracts, and are plants that have been used for food, drink, and cosmetics since ancient times. They are known to contain components having an astringent effect, such as polyphenols such as tannic acid and catechin, and organic acids such as citric acid. The plant extract having an astringent effect, which is component (C), can be obtained by extraction using water, hot water, alcohol, polyol, or a mixed solution thereof, and can be one that is generally commercially available for the purpose of being incorporated into cosmetics.

[0020] Component (C) in the skin cosmetic according to this embodiment has the effect of synergistically enhancing the action of tightening the skin and pores. This is presumably because the aforementioned component with astringent action not only tightens the skin and pores, but also acts as a coating film to hold the components on the skin surface, promoting the penetration of components (A) and (B) into the stratum corneum.

[0021] The amount of component (C) in the skin cosmetic according to this embodiment is preferably 0.0001 to 0.01% in terms of solid content. If the amount of component (C) is 0.0001% or more, the skin and pore tightening effect can be sufficiently exerted. Furthermore, if the amount of component (C) is 0.01% or less, stickiness of the skin cosmetic and coloring of the skin cosmetic by the extract can be sufficiently suppressed.

[0022] <Other ingredients> In addition to the components described above, the skin cosmetic preparation according to this embodiment may contain other components, such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, oils, polymeric compounds, thickeners, powders (colorants, resins, pigments), preservatives, fragrances, moisturizers, physiologically active ingredients, mineral salts, solvents, antioxidants, chelating agents, pearlizing agents, neutralizing agents, pH adjusters, plant extracts, enzymes, vitamins, amino acids, and other components, as appropriate, provided such components do not impair the object of the present invention.

[0023] Furthermore, the skin cosmetic according to this embodiment can be appropriately blended with a physiologically active ingredient within a range that does not impair the object of the present invention. A physiologically active substance is a substance that imparts some kind of physiological activity to the skin when applied to the skin, and examples thereof include whitening agents, anti-inflammatory agents, anti-aging agents, UV protection agents, astringents, antioxidants, blood circulation promoters, antibacterial agents, germicides, cooling agents, warming agents, wound healing promoters, irritation mitigators, analgesics, and cell activators.

[0024] The skin cosmetic according to the present embodiment can be manufactured according to a conventional method. The skin cosmetic according to the present embodiment can be used, for example, as a lotion, emulsion, cream, beauty essence, gel, sheet mask, makeup, body lotion, body gel, body cream, face wash, face wash foam, body soap, cleansing agent, makeup base, etc. The dosage form can also be selected arbitrarily according to the purpose. That is, examples of the dosage form include liquid, cream, gel, emulsion, sheet, stick, aerosol, etc. The skin cosmetic according to the present embodiment is not limited to general skin cosmetic, but includes quasi-drugs, designated quasi-drugs, external medicines, etc.

[0025] The skin cosmetic according to this embodiment is preferably applied as a sheet pack in order to maximize its effect. By applying it as a sheet pack, a larger amount of the skin cosmetic can be applied to the skin for a longer period of time, which can further enhance the effect of increasing the elasticity of the skin and tightening the pores. In addition, when the fibers of the sheet pack are applied to the skin for a long period of time, irritation such as a prickly feeling caused by the ends of the fibers is likely to occur, which can easily lead to the skin cosmetic being irritated by the skin. The skin cosmetic according to this embodiment is considered to have the effect of reducing such irritation to the skin, and is suitable for a sheet pack that can be applied to the skin for a long period of time. EXAMPLES

[0026] The present invention will now be described in detail with reference to examples, but is not limited thereto. Prior to the examples, the test and evaluation methods employed in each example will be described.

[0027] (Skin elasticity evaluation test) <Evaluation method> Three volunteers were asked to rest for 10 minutes in a room at 22°C and 50% RH after washing their faces, and the skin elasticity R7 was measured using a cutometer (MPA580, Courage+Khazaka). before After that, 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 using the Cutometer. after The percentage change in skin elasticity before and after application was calculated using the formula below, and the average value of the three subjects was used to classify the results into the following scores. <Skin elasticity evaluation score> ΔR7=(R7 after -R7 before ) x 100 <Skin elasticity evaluation criteria> ◎: The average score of 3 people was 105% or higher ○: The average score of the three participants was 95% or more but less than 105%. ×: The average score of the three participants was less than 95%.

[0028] (Skin and pore tightening effect evaluation test) Three volunteers were asked to rest for 10 minutes in a room at 22°C and 50% RH, and the surface morphology of the skin was measured using a skin image analyzer VISIA (Canfield Scientific). 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 surface morphology of the skin was measured again. The evaluation was classified into the following points based on the average reduction in the number of "noticeable pores" of the three volunteers before and after application. <Skin and pore tightening effect evaluation criteria> ◎: The average number of pores reduced by 20 or more for 3 subjects ○: The average number of pores decreased by 3 subjects was between -5 and 20. ×: The average pore reduction in 3 subjects was less than -5.

[0029] (Skin irritation evaluation test) <Evaluation method> Six volunteers were asked to apply 1.0 mL of the skin cosmetic preparation of the Example or Comparative Example to half of their face, and were asked to complete a questionnaire to assess whether they felt any irritation within one hour of application, and were then rated using the following criteria. The test results were categorized as follows, using the average scores of the three volunteers. <Skin irritation assessment score> 3 points: No irritation at all 2 points: Slightly irritating 1 point: Slightly irritating 0 points: Stimulating <Skin irritation evaluation criteria> ◎: 6 people had an average score of 2.5 points or more ○: The average score of 6 people was 2.0 points or more but less than 2.5 points. △: The average score of 6 people was 1.5 points or more but less than 2.0 points. ×: The average score of 6 people was less than 1.5 points.

[0030] <Examples 1 to 10 and Comparative Examples 1 to 8> Cosmetics having the respective formulations of Examples 1 to 10 and Comparative Examples 1 to 8 shown in Tables 1 and 2 were prepared by standard methods and evaluated by the respective test methods. The results are also shown in Tables 1 and 2.

[0031] [Table 1]

[0032] [Table 2]

[0033] As is clear from Tables 1 and 2, all of the cosmetics in the Examples had excellent performance. On the other hand, the Comparative Examples, which lacked any of the essential components, were inferior in any of the following areas: skin elasticity improving effect, skin and pore tightening effect, and lack of skin irritation, and failed to achieve the object of the present invention.

[0034] Other formulation examples of the cosmetic of the present invention are given below as examples. The cosmetic of these examples was also examined for the above-mentioned skin elasticity improving effect, skin and pore tightening effect, and lack of irritation to the skin, and was found to have excellent properties in all respects.

[0035] Example 11 (Sheet Pack) (1) Tranexamic acid 1.0% (2) Dipotassium glycyrrhizinate 0.1% (3) Ascorbic acid disodium sulfate 0.1% (4) Sage extract 0.2% (5) Chamomile Flower Extract 0.1% (6) Aloe vera extract 0.3% (7) Dipropylene glycol 1.5% (8) Glycerin 5.0% (9) 1,3-butylene glycol 7.0% (10) Propanediol 1.0% (11) Citric acid, 0.05% (12) Potassium hydroxide 0.005% (13) Polyoxyethylene hydrogenated castor oil 0.2% (14) Polyoxyethylene monolaurate Sorbitan (20 E.O.) 0.1% (15) Trisodium HEDTA 0.01% (16) Disodium edetate 0.005% (17) Sodium pyrosulfite 0.001% (18) Bisethoxydiglycol cyclohexanedicarboxylate 0.3% (19) Carboxyvinyl polymer 0.1% (20) Xanthan gum 0.1% (21) PEG-20 0.9% (22) PEG-75 0.6% (23) Phenoxyethanol 0.2% (24) Methylparaben: 0.05% (25) Birch sap 0.1% (26) PPG-13 decyltetradeceth-24 0.1% (27) Heparinoids 0.005% (28) Nicotinamide 0.2% (29) Centella asiatica extract 0.05% (30) Retinol palmitate 0.01% (31) Purified water remainder

[0036] (Production method) (1) to (25) were added to a portion of (31) and dispersed with a propeller until uniformly dissolved (Liquid A). (26) to (30) were added to the remainder of (31) and dispersed with a propeller until uniformly dissolved (Liquid B). Liquid B was added to Liquid A and uniformly dissolved to prepare a beauty essence for a sheet mask. A cotton nonwoven fabric was impregnated with this beauty essence to prepare a sheet mask.

[0037] Example 12 (slightly cloudy lotion) (1) Isopropyl methylphenol 0.1% (2) Dipotassium glycyrrhizinate 0.1% (3) Ascorbyl glucoside 0.1% (4) Sage extract 0.3% (5) Chamomile Flower Extract 0.1% (6) Aloe vera extract 0.1% (7) PEG-75 0.3% (8) Dipropylene glycol 10.5% (9) Ethanol 3.0% (10) Dimethicone 0.2% (11) PEG-60 hydrogenated castor oil 0.1% (12) Pullulan 0.5% (13) Xanthan gum 0.05% (14) (Acrylates / Alkyl acrylates) (C10-30) copolymer 0.05% (15) Green Tea Extract 0.01% (16) Sodium hyaluronate 0.001% (17) Potassium phosphate monobasic 0.02% (18) Sodium chondroitin sulfate 0.1% (19) N-acetylglucosamine 0.01% (20) Disodium edetate 0.05% (21) Hydrolyzed collagen 0.001% (22) Water-soluble collagen 0.001% (23) Pentylene glycol 0.5% (24) Hydroxyacetophenone 0.1% (25) Sodium L-stearoyl glutamate 0.2% (26) Phenoxyethanol 0.01% (27) Methylparaben 0.01% (28) Purified water remainder

[0038] (Production method) (1)-(8) and (12)-(27) were added to (28) and stirred to dissolve uniformly (Liquid A). (9)-(11) were heated to 40°C and then uniformly dispersed (Liquid B). Liquid B was added to Liquid A, and the mixture was stirred with a propeller until uniform, after which it was cooled to 30°C to prepare a slightly cloudy lotion.

[0039] Example 13 (milky beauty essence) (1) 3-O-Ethyl ascorbic acid 0.1% (2) Ascorbic acid 2-glucoside 0.1% (3) Ascorbyl glucoside 0.1% (4) Sage extract 0.05% (5) Chamomile flower extract 0.05% (6) Aloe vera extract 0.05% (6) Nicotinamide 7.0% (7) Cyclohexane-1,4-dicarboxylic acid Bis-ethoxydiglycol 0.3% (8) PEG / PPG / Polybutylene Glycol -8 / 5 / 3 Glycerin 0.2% (9) Polysorbate 20 0.3% (10) Sodium cetyl sulfate 0.2% (11) Sodium stearoyl glutamate 0.2% (12) Carboxyvinyl polymer 0.1% (13) Sodium polyacrylate 0.02% (14) Stearic acid 0.2% (15) Monoglyceryl stearate 0.1% (16) Behenyl alcohol 0.1% (17) Mineral oil 0.5% (18) Ceramide II 0.0001% (19) Vaseline 0.1% (20) Jojoba oil 0.5% (21) Squalane 0.5% (22) Sorbitan isostearate 0.1% (23) Tocopherol acetate 0.1% (24) Human stem cell culture medium 0.001% (25)Fragrance 0.05% (26) Phenoxyethanol 0.6% (27) Methylparaben 0.1% (28) Purified water remainder

[0040] (Production method) (1) to (13) were added to (28) and heated to 70°C to dissolve uniformly (Liquid A). (14) to (23) were heated to 70°C and then dissolved uniformly (Liquid B). Liquid A was added to Liquid B, and the mixture was dispersed in a homogenizer until uniform, and then cooled to 50°C (Liquid C). (24) to (27) were added to Liquid C, and the mixture was further dispersed in a homogenizer until uniform, and then cooled to 32°C to prepare a milky cosmetic essence.

Claims

1. (A) one or more selected from the group consisting of ascorbic acid and ascorbic acid derivatives; (B) sage extract; (C) one or more kinds of plant extracts having an astringent effect (excluding sage extract) selected from the group consisting of chamomile flower extract, aloe vera extract, witch hazel leaf extract, tea leaf extract, and lemon fruit extract; Skin cosmetics,

2. The skin cosmetic according to claim 1, which is a sheet pack.

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