Cosmetic composition

Abstract

This cosmetic composition contains water, a thickening polysaccharide, and a calcium salt. The thickening polysaccharide contains deacylgellan gum and sodium alginate, and the mass ratio of the deacylgellan gum content to the sodium alginate content (deacylgellan gum / sodium alginate) is 0.45-3.50. The content of calcium in the cosmetic composition is 1.00-3.00 parts by mass relative to 100 parts by mass of the total content of the deacylgellan gum and the sodium alginate. This cosmetic composition can be used in a variety of cosmetics.

Description

Cosmetic composition

[0001] The present invention relates to a cosmetic composition and a cosmetic containing the same.

[0002] Carbomers and natural thickening polysaccharides are used as ingredients that impart a thickening effect to cosmetics. Carbomers are known to have high viscosity and little stickiness even in small amounts, but lack salt tolerance. On the other hand, natural thickening polysaccharides have excellent salt tolerance, but require increased addition amounts to achieve the desired viscosity, which causes stickiness. For example, Patent Document 1 addresses the issues that a thickener that combines xanthan gum and guar gum has incomparable thickening effect to xanthan gum alone and causes a sticky feeling, and proposes a highly thickening paste composition containing a combination of xanthan gum, guar gum, and locust bean gum as active ingredients.

[0003] WO2013 / 108909

[0004] The present invention relates to providing a novel cosmetic composition that has fluidity, an excellent thickening effect, and little stickiness.

[0005] The present invention relates to the following items [1] to [3]. [1] A cosmetic composition comprising water, a thickening polysaccharide, and a calcium salt, wherein the thickening polysaccharide comprises desacyl gellan gum and sodium alginate, the mass ratio of the content of the desacyl gellan gum to the content of the sodium alginate (deacyl gellan gum / sodium alginate) is 0.45 to 3.50, and the content of calcium in the cosmetic composition is 1.00 to 3.00 parts by mass per 100 parts by mass of the total content of the desacyl gellan gum and the sodium alginate. [2] A cosmetic comprising the cosmetic composition according to [1]. [3] A method for producing a cosmetic, comprising a step of blending the cosmetic composition according to [1].

[0006] According to the present invention, it is possible to provide a novel cosmetic composition that has fluidity, an excellent thickening effect, and little stickiness.

[0007] The present inventors have investigated the above-mentioned problems and have unexpectedly discovered that a cosmetic composition containing specific amounts of water, desacyl gellan gum, sodium alginate, and a calcium salt exhibits excellent thickening effect while maintaining fluidity and little stickiness without gelling. Generally, native gellan gum is used for thickening purposes, and desacyl gellan gum is used for gelation purposes. However, the cosmetic composition of the present invention, even though it contains desacyl gellan gum, exhibits a thickening effect without gelling. The mechanism behind this is unclear, but it is presumed that gelling agents with different gelling modes and rates inhibit each other's gelation, thereby preventing complete gelation.

[0008] The cosmetic composition of the present invention contains water, deacylated gellan gum, sodium alginate, and a calcium salt.

[0009] The content of water in the cosmetic composition of the present invention is preferably 60 to 99% by mass, more preferably 80 to 98% by mass, and even more preferably 90 to 96% by mass. Examples of water include deionized water.

[0010] The cosmetic composition of the present invention contains at least deacylated gellan gum and sodium alginate (Na alginate) as thickening polysaccharides. Gellan gum is a natural polymeric polysaccharide obtained by microbial fermentation using the bacterium Pseudomonas elodea, and deacylated gellan gum is gellan gum from which the acyl groups have been removed.

[0011] From the viewpoint of fluidity, the mass ratio of the content of desacyl gellan gum to the content of sodium alginate (deacyl gellan gum / sodium alginate) is 0.45 to 3.50. The lower limit is preferably 0.48 or more, more preferably 0.50 or more, and can also be 0.60 or more, 0.70 or more, 0.80 or more, etc. The upper limit is preferably 3.00 or less, more preferably 2.50 or less, even more preferably 2.00 or less, and even more preferably 1.50 or less.

[0012] The cosmetic composition of the present invention may optionally contain a thickening polysaccharide other than desacyl gellan gum and sodium alginate. Examples of thickening polysaccharides other than desacyl gellan gum and sodium alginate include guar gum, xanthan gum, tara gum, locust bean gum, gum arabic, tragacanth gum, karaya gum, tamarind gum, carrageenan, pectin, agar, quince seed (marmella), algae colloid (kasso extract), starch (rice, corn, potato, wheat), glycyrrhizinic acid, dextran, succinoglucan, pullulan, collagen, casein, albumin, and gelatin. From the viewpoint of thickening effect, the total content of desacyl gellan gum and sodium alginate in the thickening polysaccharide is preferably 50 to 100% by mass. The lower limit is preferably 80% by mass or more, more preferably 90% by mass or more, and even more preferably 95% by mass or more. The upper limit can be, for example, 95% by mass or less, or 90% by mass or less.

[0013] The content of the thickening polysaccharide in the cosmetic composition of the present invention is preferably 0.1 to 3.0% by mass from the viewpoint of thickening effect. The lower limit is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, and even more preferably 0.9% by mass or more. From the viewpoints of transparency, fluidity, and stickiness, the upper limit is preferably 2.5% by mass or less, more preferably 2.0% by mass or less, and even more preferably 1.5% by mass or less. The content of the thickening polysaccharide refers to the total amount of deacylated gellan gum, sodium alginate, and any thickening polysaccharides that are optionally contained.

[0014] The content of deacylated gellan gum in the cosmetic composition of the present invention is not particularly limited, but can be, for example, 0.1 to 2.0% by mass, 0.2 to 1.5% by mass, or 0.3 to 1.0% by mass.

[0015] The content of sodium alginate in the cosmetic composition of the present invention is not particularly limited, but can be, for example, 0.1 to 2.0 mass %, 0.2 to 1.5 mass %, or 0.3 to 1.0 mass %.

[0016] Examples of calcium salts include calcium chloride dihydrate, calcium lactate pentahydrate, calcium chloride, calcium lactate, calcium sulfate, calcium acetate, calcium carbonate, calcium hydroxide, calcium sulfate, calcium sulfate hydrate, and calcium phosphate, and the composition may contain one or more of these. The content of the calcium salt in the cosmetic composition of the present invention is preferably 1.00 to 3.00 parts by mass, more preferably 1.00 to 2.85 parts by mass, and even more preferably 1.09 to 2.73 parts by mass of calcium (calcium ions) per 100 parts by mass of the total content of desacyl gellan gum and sodium alginate. The calcium content in the cosmetic composition of the present invention is measured by chelometric titration.

[0017] The content of the calcium salt in the cosmetic composition of the present invention depends on the total content of deacylated gellan gum and sodium alginate and the type of calcium salt, but can be, for example, 0.01 to 0.20% by mass, 0.03 to 0.15% by mass, etc. In embodiments containing two or more calcium salts, the content of the calcium salts refers to the total amount.

[0018] The cosmetic composition of the present invention may optionally contain salts other than those mentioned above, but an embodiment in which these salts are not contained is preferred. The content of optional salts in the cosmetic composition of the present invention is preferably 0.50% by mass or less, more preferably 0.10% by mass or less, and even more preferably 0.05% by mass or less. Examples of optional salts include various salts exemplified in the optional components below, as well as magnesium sulfate, sodium polyphosphate, potassium chloride, sodium hydroxide, potassium hydroxide, sodium citrate, sodium chloride, etc.

[0019] The cosmetic composition of the present invention may further contain components used in cosmetics, such as polyhydric alcohols, surfactants, oils, thickeners other than thickening polysaccharides, ultraviolet absorbers, antioxidants, preservatives, fragrances, chelating agents, neutralizing agents, moisturizers, and pH adjusters.

[0020] Examples of polyhydric alcohols include glycerin, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, triethylene glycol, tripropylene glycol, propylene glycol, 1,3-propanediol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, sorbitol, xylitol, polyethylene glycol monoethyl ether, diethylene glycol monoethyl ether, ethylene glycol dimethyl ether, 1,2-pentanediol, hexylene glycol, 1,2-hexanediol, maltitol, and glucosyl trehalose, with glycerin, dipropylene glycol, and 1,3-butylene glycol being more preferred.

[0021] Examples of surfactants include anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants, and include alkyl sulfonates, alkyl sulfates, acylated amino acid salts, polyoxyethylene alkyl ether sulfates, alkylbenzene sulfonates, N-acyl-N-methyl taurine salts, α-olefin sulfonates, higher fatty acid ester sulfonates, alkyl ether acetates, polyoxyethylene alkyl ether acetates, alkyl phosphate ester salts, fatty acid soaps, alkyl dimethyl amino acetic acid betaine type, alkyl amidopropyl betaine type, and alkyl carboxymethyl hydroxyethyl imidazolinium. Examples of the surfactants include betaine type, alkylhydroxysulfobetaine type, alkyldimethylamine oxide type, polyglycerin fatty acid ester, glycerin fatty acid ester, propylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitan tetraoleate, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, and alkyl glycoside.

[0022] Examples of oils include hydrocarbon oils, natural animal and vegetable oils and semi-synthetic oils, waxes, ester oils, silicone oils, higher alcohols, fatty acids, and essential oils.

[0023] Examples of thickeners other than thickening polysaccharides include polyvinyl alcohol (PVA), polyvinyl methyl ether (PVM), PVP (polyvinylpyrrolidone), sodium polyacrylate, carboxyvinyl polymer, dialkyldimethylammonium cellulose sulfate, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (Veegum), Laponite, silicic anhydride, taurate-based synthetic polymers, acrylate-based synthetic polymers, Tanakara clay, hectorite, bentonite, and the like.

[0024] Examples of ultraviolet absorbers include homomenthyl salicylate, ethylhexyl salicylate, homosalate, triethanolamine salicylate, 2-ethylhexyl paramethoxycinnamate, glyceryl di-paramethoxycinnamate mono-2-ethylhexanoate, methyl 2,5-diisopropylcinnamate, bis(trimethylsiloxy)silylisopentyl methyl trimethoxycinnamate, a mixture of isopropyl paramethoxycinnamate and diisopropyl cinnamate, diethanolamine p-methoxyhydrocinnamate, octocrylene, 2-ethylhexyl dimethoxybenzylidene dioxoimidazolidinepropionate, 1-(3,4-dimethoxyphenyl)-4,4-dimethyl-1,3-pentanedione, cinoxate, methyl-O-aminobenzoate, 3-(4-methylbenzylidene)camphor, octyl triazone, hexyl diethylaminohydroxybenzoylbenzoate, and bisethylhexyloxyphenol methoxyphenyl triazine.

[0025] Antioxidants include tocopherols, dibutylhydroxytoluene (BHT), butylhydroxyanisole, pyrosulfite, gallic acid ester, phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0026] Preservatives include parabens and phenoxyethanol.

[0027] Fragrances include geraniol, citral, citronellol, damask rose flower extract, farnesol, phenylethyl alcohol, phenethyl alcohol, linalool, and limonene.

[0028] Examples of the chelating agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and trisodium ethylenediaminehydroxyethyltriacetate.

[0029] Examples of the neutralizing agent include sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, sodium carbonate, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, 2-amino-2-methyl-1-propanol, and 2-amino-2-methyl-1,3-propanediol.

[0030] Examples of moisturizing agents include chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-1,2-hydroxystearate, sodium lactate, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa robur extract, yarrow extract, melilot extract, and the like.

[0031] Examples of pH adjusters include acidic substances such as citric acid, succinic acid, phosphoric acid, glycolic acid, tartaric acid, lactic acid, aspartic acid, glutamic acid, phosphoric acid, and carbonic acid, as well as their sodium or potassium salts, sodium hydroxide, potassium hydroxide, lysine, and arginine.

[0032] The transmittance of the cosmetic composition of the present invention is preferably 70 to 100%. The lower limit is preferably 75% or more, more preferably 80% or more, even more preferably 85% or more, and even more preferably 90% or more, and the upper limit can be 95% or less, 90% or less, etc. The transmittance is measured by the method described in the Examples below.

[0033] The fluidity of the cosmetic composition of the present invention is preferably a cohesiveness value of 0.45 to 1.00 as measured by texture analysis using a creep meter. The lower limit is preferably 0.50 or more, more preferably 0.60 or more, even more preferably 0.70 or more, and even more preferably 0.80 or more, and the upper limit can be 1.00 or less, 0.95 or less, 0.90 or less, etc. The fluidity is measured by the method described in the Examples below.

[0034] The viscosity of the cosmetic composition of the present invention, when measured at 25°C using a Brookfield viscometer at 12 rpm, is preferably 8,000 to 100,000 mPa·s. The lower limit is preferably 9,000 mPa·s or more, more preferably 10,000 mPa·s or more, even more preferably 11,000 mPa·s or more, even more preferably 12,000 mPa·s or more, even more preferably 13,000 mPa·s or more, and even more preferably 14,000 mPa·s or more, and the upper limit can be 80,000 mPa·s or less, 60,000 mPa·s or less, for example. The viscosity is measured by the method described in the Examples below.

[0035] The cosmetic composition of the present invention can be prepared by blending the above-mentioned water, deacylated gellan gum, sodium alginate, and calcium salt in specific amounts using a known method.

[0036] The cosmetic composition of the present invention has fluidity, an excellent thickening effect, and little stickiness. Therefore, it can be suitably used as a cosmetic product such as a lotion, emulsion, gel, serum, cream, eye care cream, massage cream, body milk, body lotion, hand milk, hand lotion, hand cream, body cream, base lotion, base cream, sunscreen cream, facial cleanser, shampoo, body shampoo, hand foam, cleansing liquid, cleansing milk, cleansing gel, or cleansing lotion, or as a raw material for these cosmetic products. That is, the present invention also provides a cosmetic product containing the cosmetic composition of the present invention. The present invention also provides a method for producing a cosmetic product, which includes a step of blending the cosmetic composition of the present invention. Here, the step of blending the cosmetic composition of the present invention includes an embodiment in which a pre-prepared cosmetic composition is blended, as well as an embodiment in which each component is blended individually.

[0037] EXAMPLES The present invention will be specifically explained below with reference to examples and comparative examples, but the present invention is not limited to these.

[0038] Preparation of Cosmetic Compositions Examples 1 to 21 and Comparative Examples 1 to 16 Cosmetic compositions were prepared by mixing the raw materials listed in Tables 1 to 4. More specifically, a thickening polysaccharide, BG (butylene glycol), a preservative (methylparaben), and purified water were blended and heated at 90°C for 5 minutes. Salts such as calcium salts were dispersed and dissolved, and the moisture content was corrected, followed by cooling at 25°C for at least 1 hour to obtain cosmetic compositions.

[0039] Details of the raw materials listed in Tables 1 to 4 are as follows: Deacylated gellan gum 1: CP Kelco Deacylated gellan gum 2: MP Gokyo Food & Chemical Deacylated gellan gum 3: Zhejian DSM Zhongken Biotechnology Native gellan gum: CP Kelco Sodium alginate: Kimica Xanthan gum: Danisco Tamarind gum: MP Gokyo Food & Chemical Agar: Ina Food Industry Kappa carrageenan: CP Kelco Calcium chloride dihydrate: Fujifilm Wako Pure Chemical Industries Calcium lactate pentahydrate: Musashino Chemical Research Institute Magnesium sulfate: Fujifilm Wako Pure Chemical Industries Sodium polyphosphate: Shimonoseki Mitsui Chemicals, Inc. Potassium chloride: Tomita Pharmaceutical Co., Ltd.

[0040] <Viscosity> The cosmetic composition of each Example and Comparative Example was adjusted to 25°C, and the sample was placed in a 200 ml tall beaker and measured at 12 rpm using a B-type viscometer (Toki Sangyo TVB-10M) to measure the viscosity value after 30 seconds. The results are shown in Tables 1 to 4.

[0041] <Fluidity> Before cooling, the cosmetic composition of each Example and Comparative Example was filled into a Petri dish (diameter 13.5 mm, height 11 mm) (n=2), cooled in cold water for at least 2 hours, and then left at room temperature for 1 hour. The Petri dish was fixed to the center of the measurement table of a creep meter (RHEONER II series (YAMADEN)) with double-sided tape, and the cohesiveness value was measured by texture analysis. The results are shown in Tables 1 to 4. (Measurement conditions) Storage parameters: storage pitch: 0.05 s, measurement strain rate: 66.67%, measurement speed: 10 mm / s, sample thickness: automatic measurement, contact surface diameter: 15 mm, amplifier magnification: 1x Plunger: plastic plunger with a diameter of 15 mm and a height of 25 mm

[0042] <Sticky / Slippery Feeling> 0.3 g of the cosmetic composition of each Example and Comparative Example was applied to the inside of the forearm, rubbed with the index finger, and evaluated according to the following evaluation criteria. The evaluation was carried out by 10 trained panelists, and the average values ​​are shown in Tables 1 to 4. A rating of 2 or higher was judged to indicate little stickiness or slipperiness. (Evaluation criteria for stickiness or slipperiness) 3: Stickiness or slipperiness of a 0.16% carbomer aqueous solution was rated as 3 2: Stickiness or slipperiness intermediate between that of a carbomer aqueous solution and that of a xanthan gum aqueous solution was rated as 2 1: Stickiness or slipperiness of a 2.5% xanthan gum aqueous solution was rated as 1

[0043]

[0044]

[0045]

[0046]

[0047] As shown in Tables 1 to 4, the cosmetic compositions of each Example all had excellent thickening effect while possessing fluidity, and were less sticky. It was also confirmed that they were less sticky.

[0048] <Transparency> The cosmetic compositions of Examples 1 to 10, 14, 16, 20, and 21 were diluted two-fold with deionized water, and the samples were placed in quartz cells (plastic). The absorbance at a wavelength of 660 nm was measured using a spectrophotometer (Shimadzu Corporation UV-1800) and converted into transmittance. The results are shown in Table 5.

[0049]

[0050] As shown in Table 5, it can be seen that each cosmetic composition also has excellent transparency.

[0051] (Formulation Examples) Formulation examples of the cosmetic of the present invention are given below. The present invention is not limited to these formulation examples. All blend amounts are expressed in mass % based on the total amount of the product.

[0052] Formulation Example 1 Cleansing liquid (suspension type) The following formulation was prepared to a total weight of 100 g.

[0053] Formulation Example 2 Cleansing gel (natural type) The following formulation was prepared to a total weight of 100 g.

[0054] Formulation Example 3 Skin Care Cream The following formulation was prepared to a total weight of 100 g.

[0055] The cosmetics of Formulation Examples 1 to 3 all had excellent thickening effect while possessing fluidity, and were not sticky.

[0056] The cosmetic composition of the present invention can be used in various cosmetic products.

Claims

1. A cosmetic composition comprising water, a thickening polysaccharide, and a calcium salt, wherein the thickening polysaccharide comprises desacyl gellan gum and sodium alginate, the mass ratio of the content of the desacyl gellan gum to the content of the sodium alginate (deacyl gellan gum / sodium alginate) is 0.45 to 3.50, and the content of calcium in the cosmetic composition is 1.00 to 3.00 parts by mass per 100 parts by mass of the total content of the desacyl gellan gum and the sodium alginate.

2. The cosmetic composition according to claim 1, wherein the total content of the deacylated gellan gum and the sodium alginate in the thickening polysaccharide is 50 to 100% by mass.

3. The cosmetic composition according to claim 1, wherein the thickening polysaccharide further comprises one or more selected from the group consisting of guar gum, xanthan gum, tara gum, locust bean gum, gum arabic, tragacanth gum, karaya gum, tamarind gum, carrageenan, pectin, agar, quince seed, algae colloid (cassow extract), starch (rice, corn, potato, wheat), glycyrrhizinic acid, dextran, succinoglucan, pullulan, collagen, casein, albumin, and gelatin.

4. The cosmetic composition according to claim 1, wherein the calcium salt comprises one or more selected from the group consisting of calcium chloride dihydrate, calcium lactate pentahydrate, calcium chloride, calcium lactate, calcium sulfate, calcium acetate, calcium carbonate, calcium hydroxide, calcium sulfate, calcium sulfate hydrate, and calcium phosphate.

5. The cosmetic composition according to claim 1, further comprising one or more selected from the group consisting of polyhydric alcohols, surfactants, oils, thickeners other than thickening polysaccharides, ultraviolet absorbers, antioxidants, preservatives, fragrances, chelating agents, neutralizing agents, moisturizing agents, and pH adjusters.

6. A cosmetic comprising the cosmetic composition according to any one of claims 1 to 5.

7. A method for producing a cosmetic, comprising the step of blending the cosmetic composition according to any one of claims 1 to 5.

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