Skin cosmetic

Abstract

To provide a skin cosmetic which offers a sufficient feeling of moisture, alleviates a sense of stickiness, ameliorates a squeaky feel, and imparts firmness and elasticity.SOLUTION: A skin cosmetic comprises: (A) polyethylene glycol having an average molecular weight of 1,000-300,000; (B) a raspberry extract; and (C) a lemon extract.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to skin cosmetics.

Background Art

[0002] Conventionally, as a role of skin care, imparting and maintaining a moisturizing feeling to the skin, and skin cosmetics that achieve this are preferred. On the other hand, when a large amount of a moisturizing component is blended, stickiness or even a feeling of squeaking may be felt.

[0003] Therefore, various studies have been made to improve stickiness while imparting a moisturizing feeling, and skin cosmetics using saccharides and specific extracts, skin cosmetics using a humectant and specific plant extracts, vitamins, etc. (see, for example, Patent Documents 1 and 2) are known.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The skin cosmetics of the above prior art are considered to have a certain effect in alleviating stickiness, but they have not been able to sufficiently exert the effect of alleviating stickiness while having sufficient moisturizing. Also, generally, not only stickiness but also a lack of squeaking feeling is preferred as a touch, but it does not have such an effect. Against this background, there is a strong demand for skin cosmetics that have sufficient moisturizing, alleviate stickiness, improve squeaking, and further impart firmness and elasticity.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a skin cosmetic having sufficient moisturizing feeling, alleviating stickiness, improving squeaking feeling, and imparting firmness and elasticity.

Means for Solving the Problems

[0007] As a result of further intensive studies to solve the above problems, the present inventors have found that by combining polyethylene glycol having an average molecular weight of 1,000 to 300,000, strawberry extract, and lemon extract, a cosmetic can be obtained that has sufficient moisturizing feeling, alleviates stickiness, improves squeaking feeling, and imparts firmness and elasticity, and thus completed the present invention. Furthermore, when it is made into a sheet pack that can keep the cosmetic on the skin for a long time to enhance the beauty effect on the skin, it has been found that the moisturizing feeling can be further enhanced, stickiness can be alleviated, squeaking feeling can be improved, and firmness and elasticity can be imparted, and thus completed the present invention.

[0008] The skin cosmetic according to the present invention (A) polyethylene glycol having an average molecular weight of 1,000 to 300,000, (B) strawberry extract, (C) lemon extract, and contains.

[0009] Furthermore, the skin cosmetic according to the present invention may be a sheet pack.

Effects of the Invention

[0010] According to the present invention, it is possible to provide a skin cosmetic having sufficient moisturizing feeling, alleviating stickiness, improving squeaking feeling, and imparting firmness and elasticity.

Modes for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail. The skin cosmetic according to this embodiment combines polyethylene glycol having an average molecular weight of 1,000 to 300,000, strawberry extract, and lemon extract.

[0012] <(A) Polyethylene glycol with an average molecular weight of 1,000 to 300,000> (Component (A) is a component generally used in cosmetics for purposes such as a humectant, thickening agent, and binder for formulations, and is also available as a commercially available cosmetic raw material when used in the skin cosmetics of the present embodiment.)

[0013] In this specification, the "average molecular weight" refers to the number average molecular weight. If the average molecular weight is 1,000 or more, a sufficient coating film forming action and the resulting action on the skin can be obtained. Also, if the average molecular weight is 300,000 or less, peeling due to film sagging does not occur. Further, the component (A) used in the present invention can be used alone or in combination of two or more as long as the overall average molecular weight thereof falls within the range of 1,000 to 300,000.)

[0014] Here, in the skin cosmetics according to the present embodiment, since a specific action is recognized in the use of polyethylene glycol, the average molecular weight of 1,000 to 300,000 referred to here does not mean the average calculated from the entire component (A) blended, but means that the cosmetics contain a large amount of those having a molecular weight of 1,000 to 300,000.)

[0015] The content of component (A) in the skin cosmetics according to the present embodiment is preferably 0.5 to 5.0% by mass (hereinafter, % means % by mass unless otherwise specified) with respect to the entire skin cosmetics. If it is 0.5% or more, a sufficient skin moisturizing effect can be obtained. On the other hand, if it is 5.0% or less, stickiness or the generation of precipitates over time in the skin cosmetics does not occur. Here, when two or more kinds of component (A) are included, the above content indicates the total amount of those components.)

[0016] <(B) Strawberry extract> (B) component is a strawberry extract. Strawberry (scientific name: Rubus idaeus) is a genus of the Rosaceae family and has been consumed and drunk since ancient times. The strawberry extract contained in the skin cosmetic according to this embodiment can be obtained by extracting from the leaves, fruits, and seeds of strawberries using water, hot water, alcohol, polyol, or a mixed solution thereof, and commercially available products for the purpose of blending into cosmetics can be used.

[0017] In the skin cosmetic according to this embodiment, the (B) component has a moisturizing effect, suppresses the stickiness of the (A) component, and can impart firmness and elasticity.

[0018] In the skin cosmetic according to this embodiment, the blending amount of the (B) component in the skin cosmetic is preferably 0.0001 to 0.01% in terms of solid content. If the blending amount of the (B) component is 0.0001% or more, the moisturizing effect on the skin, the suppression of the stickiness of the (A) component, and the imparting of firmness and elasticity can be achieved. Also, if the blending amount of the (B) component is 0.01% or less, the stickiness of the skin cosmetic caused by the (B) component and the coloring due to the extract in the skin cosmetic can be sufficiently suppressed.

[0019] <(C) Lemon extract> (C) component is a lemon extract. It is a plant-derived extract and has been used for food, drink, and cosmetics since ancient times, and is known to contain components with astringent effects such as organic acids like citric acid. The plant extract with an astringent effect as the (C) component can be obtained by extracting using water, hot water, alcohol, polyol, or a mixed solution thereof, and commercially available products for the purpose of blending into cosmetics can be used.

[0020] In the skin cosmetic according to this embodiment, the blending amount of the component (C) in the skin cosmetic is preferably 0.0001 to 0.01% in terms of solid content. If the blending amount of the component (C) is 0.0001% or more, the moisturizing effect on the skin and the effect of suppressing the squeaking feeling of the skin cosmetic can be sufficiently exerted. Further, if the blending amount of the component (C) is 0.01% or less, the coloring due to the extract in the skin cosmetic can be sufficiently suppressed.

[0021] <Other components> In addition to the above-described components, the skin cosmetic according to this embodiment may contain, within a range not impairing the object of the present invention, other components such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, oils, high molecular compounds, thickeners, powders (dyes, resins, pigments), preservatives, fragrances, moisturizers, physiologically active components, mineral salts, solvents, antioxidants, chelating agents, pearling agents, neutralizing agents, pH adjusters, plant extracts, enzymes, vitamins, amino acids and the like can be appropriately blended.

[0022] Further, in the skin cosmetic according to this embodiment, a physiologically active component can be appropriately blended within a range not impairing the object of the present invention. A physiologically active substance is a substance that gives 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.

[0023] The skin cosmetic according to this embodiment can be manufactured according to a conventional method. Also, the skin cosmetic according to this embodiment can be used, for example, as a lotion, emulsion, cream, essence, gel, sheet mask, makeup, body lotion, body gel, body cream, facial cleanser, facial wash foam, body soap, cleansing agent, makeup base, etc. Its dosage form can also be arbitrarily selected according to the purpose. That is, examples include liquid, cream, gel, emulsion, sheet, stick, aerosol, etc. The skin cosmetic according to this embodiment is not limited to general skin cosmetics, but includes quasi-drugs, designated quasi-drugs, external medicines, etc.

[0024] In order to maximize the effects of the skin cosmetic according to this embodiment, it is preferably applied as a sheet pack. By applying it as a sheet pack, a larger amount of the skin cosmetic can be applied to the skin for a longer time, and the moisturizing effect on the skin can be further enhanced.

Examples

[0025] Next, the present invention will be described in detail based on examples, but it is not limited thereto. Prior to the examples, the test methods and evaluation methods employed in each example will be described.

[0026] <Evaluation Method> For five professional panelists, after performing normal face washing, 3 mL of the skin cosmetic of the example or comparative example was taken by hand and applied to the face for evaluation after being worked in.

[0027] [1] Skin Moisture Feeling Evaluation Test (Test Method) After working in the skin cosmetic of the example or comparative example, the skin was evaluated according to the following evaluation criteria, and the average value was taken as the test result. <Evaluation Criteria> 5: A very strong sense of moisture was felt in the skin after being worked in. 4: A somewhat strong sense of moisture was felt in the skin after being worked in. 3: A very slight sense of moisture was felt in the skin after being worked in. 2: Didn't feel much moisturizing effect on the skin after getting used to it. 1: Didn't feel any moisturizing effect on the skin after getting used to it <Judgment Criteria> ◎: Average value is 4.0 or more 〇: Average value is 3.0 or more and less than 4.0 △: Average value is 2.0 or more and less than 3.0 ×: Average value is less than 2.0

[0028] [2] Evaluation test for non-greasy feeling of skin (Test method) After getting used to the skin cosmetics of the examples or comparative examples, the skin was evaluated according to the following evaluation criteria, and the average value was taken as the test result. <Evaluation Criteria> 5: Felt a very non-greasy feeling on the skin after getting used to it. 4: Felt a slightly non-greasy feeling on the skin after getting used to it. 3: Felt a very slight non-greasy feeling on the skin after getting used to it. 2: Didn't feel much non-greasy feeling on the skin after getting used to it. 1: Didn't feel any non-greasy feeling on the skin after getting used to it. <Judgment Criteria> ◎: Average value is 4.0 or more 〇: Average value is 3.0 or more and less than 4.0 △: Average value is 2.0 or more and less than 3.0 ×: Average value is less than 2.0

[0029] [3] Skin firmness and elasticity evaluation test (Test method) For 5 volunteers, after washing their faces, they were asked to rest quietly for 10 minutes in a room at 22°C and 50% RH, and the skin elasticity R7before was measured with a Cutometer (MPA580, manufactured by Courage+Khazaka). Then, 1.0 mL of the skin cosmetics of the examples or comparative examples was applied to one side of the face, and after resting quietly for 10 minutes, the skin elasticity R7after was measured again with the Cutometer. The percentage change in skin elasticity before and after application was calculated using the following formula, and classified into the following scores using the average value of 5 people. <Contents of the score for evaluating skin elasticity> ΔR7 = (R7after - R7before) × 100 <Judgment criteria> ◎: The average score of 5 people was 105% or more. ○: The average score of 5 people was 95% or more and less than 105%. ×: The average score of 5 people was less than 95%.

[0030] [4] Evaluation test for the absence of skin creaking (Test method) After applying the skin cosmetic of the example or comparative example, the skin was evaluated according to the following evaluation criteria, and the average value was taken as the test result. <Evaluation criteria> 5: Felt a great absence of creaking in the skin after application. 4: Slightly felt the absence of creaking in the skin after application. 3: Barely felt the absence of creaking in the skin after application. 2: Didn't feel much of the absence of creaking in the skin after application. 1: Didn't feel any absence of creaking in the skin after application. <Judgment criteria> ◎: Average value is 4.0 or more 〇: Average value is 3.0 or more and less than 4.0 △: Average value is 2.0 or more and less than 3.0 ×: Average value is less than 2.0

[0031] <Examples 1 to 5 and Comparative Examples 1 to 6> The skin cosmetics in the prescriptions of the examples and comparative examples shown in Tables 1 and 2 were prepared by a conventional method and evaluated by each test method.

[0032]

Table 1

[0033]

Table 2

[0034] As is clear from Tables 1 and 2, all of the skin cosmetics of the examples had excellent performance. On the other hand, in the comparative examples lacking any of the components, they were inferior in any aspect of moist feeling, lack of a harsh feeling, and lack of a sticky feeling, and the object of the present invention could not be achieved.

[0035] Hereinafter, other formulation examples of the skin cosmetic of the present invention will be given as examples. Regarding the skin cosmetics of these examples as well, when examined for the above-mentioned moist feeling, lack of a harsh feeling, and lack of a sticky feeling, they all had excellent characteristics and were good.

[0036] Example 6 (Sheet pack) (1) Tranexamic acid 1.0% (2) Dipotassium glycyrrhizinate 0.1% (3) Ascorbic acid sulfate 2Na 0.1% (4) Betaine 0.5% (5) Polyethylene glycol 6000 1.0% (6) Strawberry extract 0.2% (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) HEDTA trisodium 0.01% (20) Disodium edetate 0.005% (21) Sodium pyrosulfite 0.001% (22) Bis(ethoxydiglycol) cyclohexanedicarboxylate 0.3% (23) Carbomer 0.1% (24) Xanthan gum 0.1% (25) PEG - 20 0.9% (26) PEG - 75 0.6% (27) Phenoxyethanol 0.2% (28) Methylparaben 0.05% (29) Prunus mume bark extract 0.1% (30) PPG - 13 decyltetradeceth - 24 0.1% (31) Heparin - like substance 0.005% (32) Nicotinamide 0.2% (33) Aloe vera extract 0.05% (34) Retinol palmitate 0.01% (35) Purified water balance

[0037] (Production method) (1) - (29) were added to a part of (35) and dispersed with a propeller until uniformly dissolved (Solution A). (29) - (34) were added to the remaining part of (35) and dispersed with a propeller until uniformly dissolved (Solution B). Solution B was added to Solution A and uniformly dissolved to prepare a beauty liquid for sheet mask. This beauty liquid was impregnated into a cotton non - woven fabric to prepare a sheet mask.

[0038] Example 7 (milky lotion) (1) Isopropylmethylphenol 0.1% (2) Dipotassium glycyrrhizinate 0.1% (3) Ascorbyl glucoside 0.1% (4) Polyethylene glycol 4000 1.0% (5) Maltitol 2.0% (6) Strawberry extract 0.3% (7) Lemon extract 0.1% (8) Sage extract 0.2% (9) Chamomile flower extract 0.1% (10) Aloe vera extract 0.1% (11) PEG-75 0.3% (12) Dipropylene glycol 10.5% (13) Ethanol 3.0% (14) Dimethicone 0.2% (15) PEG-60 hydrogenated castor oil 0.1% (16) Pullulan 0.5% (17) Xanthan gum 0.05% (18) (Acrylates / C10-30 alkyl acrylate) copolymer 0.05% (19) Green tea extract 0.01% (20) Sodium hyaluronate 0.001% (21) Monopotassium phosphate 0.02% (22) Sodium chondroitin sulfate 0.1% (23) N-acetylglucosamine 0.01% (24) Disodium edetate 0.05% (25) Hydrolyzed collagen 0.001% (26) Water-soluble collagen 0.001% (27) Pentylene glycol 0.5% (28) Hydroxyacetophenone 0.1% (29) Sodium L-stearoyl glutamate 0.2% (30) Phenoxyethanol 0.01% (31) Methylparaben 0.01% (32) Purified water the balance (Production method) (1) to (12) and (16) to (31) were added to (32) and stirred until uniformly dissolved (Solution A). (13) to (15) were heated to 40 °C and then uniformly dispersed (Solution B). Solution B was added to Solution A, and after stirring and mixing uniformly with a propeller until homogeneous, it was cooled to 30 °C to prepare a milky lotion.

[0039] (Production method) (1) to (12) and (16) to (31) were added to (32) and stirred until uniformly dissolved (Solution A). (13) to (15) were heated to 40 °C and then uniformly dispersed (Solution B). Solution B was added to Solution A, and after stirring and mixing uniformly with a propeller until homogeneous, it was cooled to 30 °C to prepare a milky lotion.

[0040] Example 8 (Milky beauty liquid) (1) 0.1% 3-O-Ethyl Ascorbic Acid (2) 0.1% Ascorbic Acid 2-Glucoside (3) 0.1% Ascorbyl Glucoside (4) 2.0% Betaine (5) 0.5% Polyethylene Glycol 4000 (6) 3.0% Sorbitol (7) 0.05% Strawberry Extract (8) 0.2% Sage Extract (9) 0.1% Chamomile Flower Extract (10) 0.05% Lemon Extract (11) 0.05% Aloe Vera Extract (12) 7.0% Nicotinamide (13) Cyclohexane-1,4-dicarboxylic Acid Bisethoxydiglycol 0.3% (14) PEG / PPG / Polybutylene Glycol -8 / 5 / 3 Glycerin 0.2% (15) 0.3% Polysorbate 20 (16) 0.2% Sodium Cetyl Sulfate (17) 0.2% Sodium Stearoyl Glutamate (18) 0.1% Carbomer (19) 0.02% Sodium Polyacrylate (20) 0.2% Stearic Acid (21) 0.1% Monoglyceryl Stearate (22) 0.1% Behenyl Alcohol (23) 0.5% Mineral Oil (24) 0.0001% Ceramide II (25) 0.1% Petrolatum (26) 0.5% Jojoba Oil (27) 0.5% Squalane (28) 0.1% Sorbitan Isostearate (29) 0.1% Tocopheryl Acetate (30) 0.001% Human Stem Cell Culture Medium (31) 0.05% Perfume (32) Phenoxyethanol 0.6% (33) Methylparaben 0.1% (34) Purified water the balance

[0041] (Production method) (1) to (19) were put into (34), heated to 70°C and uniformly dissolved (A solution). (20) to (29) were heated to 70°C and then uniformly dissolved (B solution). The A solution was added to the B solution, dispersed with a homomixer until uniform, and then cooled to 50°C (C solution). (30) to (33) were added to the C solution, further dispersed with a homomixer until uniform, and then cooled to 32°C to prepare an emulsion beauty liquid.

Claims

Claim 1 A skin cosmetic characterized by containing the following (A) to (C). (A) Polyethylene glycol having an average molecular weight of 1,000 to 300,000 (B) Strawberry extract (C) Lemon extract Claim 2 The skin cosmetic according to Claim 1, which is a sheet pack.

Images