Compositions suitable for skin care

Abstract

To provide a composition that exhibits a comfortable texture and good skin affinity while also providing cosmetic effects, such as skin care effects. [Solution] The present invention relates to a composition comprising (a) at least one skin care active ingredient selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof; (b) at least one polyglutamic acid or a salt thereof; (c) at least one diol having at least one carbon chain containing seven or more carbon atoms; and (d) at least one chelating agent. The composition according to the present invention can provide cosmetic effects, such as skin care effects, while offering a comfortable texture and low stickiness.

Description

Technical Field

[0001] The present invention relates to a composition that can exhibit a comfortable texture and good skin affinity, preferably a cosmetic composition, more preferably a skin cosmetic composition.

Background Art

[0002] Giving the skin a comfortable texture is one of the main characteristics of cosmetics, especially skin care cosmetics. In order to provide a comfortable texture to cosmetics, for example, reducing the stickiness of cosmetics can be useful in some cases. Cosmetics with low stickiness can provide a comfortable texture, such as a smooth feeling during use.

[0003] On the other hand, skin affinity is also another main characteristic of cosmetics. Good skin affinity of cosmetics may be related to the effect of cosmetics on the skin.

[0004] Therefore, there is still a need for cosmetics, especially skin care cosmetics, that have a comfortable texture and good skin affinity while also providing beauty effects, such as skin care effects.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document ३

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0006] The object of the present invention is to provide a composition that exhibits a comfortable texture and good skin affinity while also providing cosmetic effects, such as skin care effects. [Means for solving the problem]

[0007] The above objective of the present invention is, (a) At least one active ingredient for skin care selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof, (b) at least one polyglutamic acid or a salt thereof, (c) At least one diol having at least one carbon chain containing seven or more carbon atoms, (d) at least one chelating agent and This can be achieved by a composition containing, preferably a cosmetic composition, more preferably a skin cosmetic composition.

[0008] (a1) The sugar may be selected from disaccharides, preferably from the group consisting of sucrose, lactulose, lactose, maltose, trehalose, cellobiose, and mixtures thereof, and more preferably (a1) the sugar is trehalose.

[0009] The amount of (a1) sugars in the composition according to the present invention may be in the range of 0.1% to 15% by mass, preferably 0.5% to 10% by mass, and more preferably 1% to 5% by mass, based on the total mass of the composition.

[0010] (a2) The plant-derived protein may be selected from hydrolyzed plant proteins, preferably from the group consisting of hydrolyzed pea protein, hydrolyzed soy protein, hydrolyzed wheat protein, hydrolyzed rice protein, hydrolyzed corn protein, plant-derived recombinant silk protein, and mixtures thereof, and more preferably (a2) the plant-derived protein is hydrolyzed rice protein.

[0011] The amount of (a2) plant-derived protein in the composition according to the present invention may be in the range of 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0012] (b) The polyglutamic acid or its salt may be selected from the group consisting of polyglutamic acid, sodium polyglutamate, and mixtures thereof.

[0013] The amount of (b) polyglutamic acid or its salt in the composition according to the present invention may be in the range of 0.001% to 3% by mass, preferably 0.005% to 1% by mass, and more preferably 0.01% to 0.5% by mass, based on the total mass of the composition.

[0014] (c) The diol may have at least one carbon chain comprising 7 to 14 carbon atoms, preferably 7 to 12 carbon atoms, more preferably 7 to 10 carbon atoms, and even more preferably 7 or 8 carbon atoms.

[0015] (c) The diol may have 1 to 3 carbon chains, preferably 1 or 2 carbon chains, more preferably 1 carbon chain, where each carbon chain contains 7 to 14 carbon atoms, preferably 7 to 12 carbon atoms, more preferably 7 to 10 carbon atoms, and even more preferably 7 or 8 carbon atoms.

[0016] (c) The diol may be selected from the group consisting of 1,8-octanediol, 2-ethyl-1,3-hexanediol, caprylyl glycol, and mixtures thereof, preferably (d) the diol is caprylyl glycol.

[0017] The amount of (c) diol in the composition according to the present invention may be in the range of 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0018] (d) The chelating agent may be selected from (poly)amino(poly)carboxylic acids, preferably may be selected from the group consisting of trisodium ethylenediaminedisuccinate, trisodium NTA, pentasodium pentetate, and mixtures thereof, more preferably, (c) the chelating agent is trisodium ethylenediaminedisuccinate.

[0019] The amount of the (d) chelating agent in the composition according to the present invention may be within the range of 0.01% by mass to 5% by mass, preferably 0.05% by mass to 3% by mass, more preferably 0.1% by mass to 1% by mass, based on the total mass of the composition.

[0020] The composition according to the present invention may further contain (e) water.

[0021] The present invention also relates to a beauty method for keratin substances such as skin, which includes a step of applying the composition according to the present invention to the keratin substance.

Mode for Carrying Out the Invention

[0022] As a result of intensive studies, the present inventors have discovered that it is possible to provide a composition that can provide a beauty effect, such as a skin care effect, while showing a comfortable texture and good skin affinity.

[0023] Therefore, one aspect of the present invention is (a) At least one skin care active ingredient selected from the group consisting of (a1) saccharides, (a2) plant-derived proteins, and mixtures thereof, (b) At least one polyglutamic acid or a salt thereof, (c) At least one diol having at least one carbon chain containing 7 or more carbon atoms, (d) At least one chelating agent and a composition containing the same.

[0024] The composition according to the present invention can provide a beauty effect, such as a skin care effect, while providing a comfortable texture and good skin affinity.

[0025] The composition according to the present invention can have a comfortable texture, such as a smooth feel, by reducing the stickiness of the composition. The term "stickiness" here refers to the property that provides a sticky feeling to the skin.

[0026] Therefore, the composition according to the present invention can provide a comfortable texture during and / or after application to the skin.

[0027] The composition according to the present invention may also have good skin affinity.

[0028] The term "dermatophyte" here refers to suitability or compatibility with the skin. Good dermatophyte of the composition according to the present invention means that the composition according to the present invention can be sufficiently suitable for the surface of the skin, or can have good compatibility.

[0029] The surface of the skin is slightly hydrophobic. (c) Diols having at least one carbon chain containing seven or more carbon atoms, which are included in the composition according to the present invention, are also slightly hydrophobic due to their relatively long carbon chains. Therefore, (c) diols can contribute to the good skin affinity of the composition according to the present invention.

[0030] The good skin affinity of the composition according to the present invention can contribute to the good spreadability of the composition during application to the skin and / or the smoothness of the composition on the skin after application.

[0031] The composition according to the present invention is suitable for skin care because (a) it contains at least one skin care ingredient.

[0032] Therefore, the composition according to the present invention can also provide cosmetic effects, such as skin care effects.

[0033] As a result, the composition according to the present invention can produce a good skin finish.

[0034] The present invention will be described in more detail below.

[0035] [Composition] The composition according to the present invention is (a) At least one active ingredient for skin care selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof, (b) at least one polyglutamic acid or a salt thereof, (c) At least one diol having at least one carbon chain containing seven or more carbon atoms, (d) at least one chelating agent and Includes.

[0036] (Skin care active ingredients) The composition according to the present invention comprises (a) at least one active ingredient for skin care. (a) The active ingredient for skin care is selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof.

[0037] <Sugars> The composition according to the present invention may contain (a1) at least one type of sugar. A single type of sugar may be used, or two or more different types of sugars may be used in combination.

[0038] The term "sugars" here refers to polyalcohols composed of one or more glucidic units, which may have at least one carbonyl group. Examples of sugar derivatives include sugar alcohols obtained by reducing one or more carbonyl groups of sugars, and sugars or sugar alcohols in which one or more hydrogen atoms in the hydroxyl groups are replaced by at least one substituent, such as an alkyl group, hydroxyalkyl group, alkoxy group, acyl group, or carbonyl group.

[0039] The sugars may be selected from the group consisting of monosaccharides, disaccharides, oligosaccharides, polysaccharides, and mixtures thereof.

[0040] The monosaccharides may be selected from the group consisting of aldoses, ketoses, and mixtures thereof.

[0041] Examples of aldoses include tetroses, e.g., erythrose, threose; pentoses, e.g., ribose, arabinose, xylose, lyxose; hexoses, e.g., allose, altrose, glucose, mannose, globose, idose, galactose, and talose; and mixtures thereof.

[0042] Examples of ketoses include tetroses, e.g., erythritolose; pentoses, e.g., xylulose and ribose; hexoses, e.g., psicose, fructose, sorbose and tagatose; and mixtures thereof.

[0043] The disaccharide may be selected from reducing sugars or non-reducing sugars.

[0044] Examples of disaccharides include sucrose, lactulose, lactose, maltose, trehalose, and cellobiose.

[0045] Oligosaccharides can be composed of 3 to 10 monosaccharides.

[0046] Examples of oligosaccharides include fructo-oligosaccharides, malto-oligosaccharides, isomalt-oligosaccharides, dextrins, cyclodextrins, and mixtures thereof.

[0047] The polysaccharides may be selected from alginic acid, guar gum, xanthan gum, gum arabic, arabinogalactan, carrageenan, agar, karaya gum, tragacanth gum, tara gum, pectin, locust bean gum, curdlan, jellan gum, dextran, pullulan, hyaluronic acid, cellulose and its derivatives, and mixtures thereof.

[0048] The sugar derivative may be selected from the group consisting of erythritol, lactitol, maltitol, mannitol, sorbitol, and xylitol, and at least one hydrogen of its hydroxyl group may be replaced by at least one substituent, such as an alkyl group, a hydroxyalkyl group, an alkoxy group, an acyl group, or a carbonyl group.

[0049] The sugars mentioned above can exist in the form of L-isomers or D-isomers.

[0050] The amount of (a1) sugars in the composition according to the present invention may be 0.1% by mass or more, preferably 0.5% by mass or more, and more preferably 1% by mass or more, based on the total mass of the composition.

[0051] The amount of (a1) sugars in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0052] The amount of (a1) sugars in the composition according to the present invention may be 0.1% to 15% by mass, preferably 0.5% to 10% by mass, and more preferably 1% to 5% by mass, based on the total mass of the composition.

[0053] <Plant Protein> The composition according to the present invention may (a2) contain at least one plant-derived protein. A single type of such protein may be used, or two or more different types of such proteins may be used in combination.

[0054] Plant-derived proteins may be polypeptides obtained from plants such as soybeans, peas, wheat, rice, corn, and sesame. The proteins may be hydrolyzed. Hydrolysis can be carried out by conventionally known methods, such as using acids or enzymes. Plant-derived proteins may also be polypeptides obtained by industrial biotechnology methods, such as genetic modification, and fermentation of natural, powerful carbon sources such as corn starch.

[0055] (a2) The plant-derived protein is preferably selected from hydrolyzed plant proteins.

[0056] (a2) The plant-derived protein is more preferably selected from the group consisting of hydrolyzed pea protein, hydrolyzed soy protein, hydrolyzed wheat protein, hydrolyzed rice protein, hydrolyzed corn protein, plant-derived recombinant silk protein, and mixtures thereof.

[0057] (a2) The plant-derived protein is more preferably hydrolyzed rice protein.

[0058] The protein may contain acidic amino acids such as aspartic acid and glutamic acid, as well as basic amino acids such as arginine, histidine, and lysine.

[0059] Hydrolyzed pea protein can be prepared by hydrolysis of peas (Pisum sativum L). Commercial products such as Promois® WJ or Promois® WJ-SP manufactured by Seiwa Kasei Co., Ltd., which are aqueous solutions or powdered pea protein with an average molecular weight of approximately 500, may be used as hydrolyzed pea protein. Hydrolyzed soy protein can be prepared by hydrolysis of soybeans (Glycine max). Commercial products such as Promois® WS or Promois® WS-HSP manufactured by Seiwa Kasei Co., Ltd., which are aqueous solutions or powdered soy protein with an average molecular weight of approximately 700, may be used as hydrolyzed soy protein. Hydrolyzed wheat protein can be prepared by hydrolysis of wheat (Triticum). As hydrolyzed wheat protein, commercially available products such as Promois® WG or Promois® WG-SP manufactured by Seiwa Kasei Co., Ltd., which are aqueous solutions or powdered wheat protein with an average molecular weight of approximately 700, may be used. Hydrolyzed rice protein can be prepared by hydrolysis of rice (Oryza sativa). As hydrolyzed rice protein, commercially available products such as Nutripeptides® manufactured by Silab, which are aqueous solutions of rice protein, may be used. As a mixture of hydrolyzed wheat protein, hydrolyzed corn protein, and hydrolyzed soy protein, commercially available products such as Keraplant manufactured by TRI-K, which are aqueous solutions of wheat protein, corn protein, and soy protein, may be used. As plant-derived silk, commercially available products such as Silkgel Neo® manufactured by Givaudan, which are aqueous gel silk produced by industrial biotechnology using fermentation, may be used.

[0060] The amount of (a2) plant-derived protein in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0061] The amount of (a2) plant-derived protein in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0062] The amount of (a2) plant-derived protein in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0063] (Polyglutamic acid or its salts) The composition according to the present invention comprises (b) at least one polyglutamic acid or a salt thereof. A single type of polyglutamic acid or a salt thereof may be used, or two or more different types of polyglutamic acid or salts thereof may be used in combination.

[0064] (b) Polyglutamic acid or a salt thereof is given by the following general formula (1): ROOC-CH2CH2-CH(-COOR)-NH-[CO-CH2CH2-CH(-COOR)-NH-] n -CO-CH2CH2-CH(-COOR)-NH2(1) [In the formula, R independently represents a hydrogen atom, an alkali metal atom, such as a sodium atom and a potassium atom, or an ammonium group, such as a tetramethylammonium group and a tetraethylammonium group.] n represents an integer of 2 or greater, preferably 4 or greater, and more preferably 6 or greater. It may have a chemical structure represented by [this].

[0065] Polyglutamic acid or its salts, represented by the above chemical formula (1), are sometimes called γ-polyglutamic acid or its salts because the carboxyl group at the γ position and the amino group at the α position form a peptide bond.

[0066] (b) In some cases, it is preferable that the molecular weight of the polyglutamic acid or its salt is 1000 or more and the degree of polymerization is 8 or more (where "n" in the above chemical formula (1) is 6 or more).

[0067] (b) It may be more preferable that the polyglutamic acid or its salt has a molecular weight of 100,000 or more and a degree of polymerization of 770 or more (where "n" in the above chemical formula (1) is 768 or more).

[0068] (b) It may be even more preferable that the polyglutamic acid or its salt has a molecular weight of 500,000 or more and a degree of polymerization of 3840 or more (where "n" in the above chemical formula (1) is 3838 or more).

[0069] (b) There is no upper limit on the molecular weight of polyglutamic acid or its salts.

[0070] However, the molecular weight of (b) polyglutamic acid or its salt may be 5,000,000 or less, and the degree of polymerization may be 38,500 or less (where "n" in the above chemical formula (1) is 38,498 or less), preferably the molecular weight of (b) polyglutamic acid or its salt may be 3,000,000 or less, and the degree of polymerization may be 23,080 or less (where "n" in the above chemical formula (1) is 23,078 or less).

[0071] (b) The glutamic acid that constitutes polyglutamic acid or its salt may be D-form, L-form, or racemic. However, considering market availability, biocompatibility, and biodegradability, it may be preferable to use polyglutamic acid composed solely of L-form glutamic acid, or polyglutamic acid composed of a mixture of L-form and D-form glutamic acid. However, polyglutamic acid composed of D-form glutamic acid, which has the same effect and low biodegradability, can also be used.

[0072] (b) The method for producing polyglutamic acid or its salts is not particularly limited. For example, organic synthesis using a peptide synthesizer, organic synthesis by polymerization of N-carboxyglutamic acid anhydride, and organic synthesis by polymerization of N-benzyloxycarbonylglutamic acid anhydride. On the other hand, microorganisms belonging to the genus Bacillus that have the ability to produce γ-polyglutamic acid (in particular Bacillus subtilis, Bacillus anthracis, Bacillus licheniformis, and Bacillus megaterium, which have the ability to produce γ-polyglutamic acid) can also be used in (b) fermentation methods for producing polyglutamic acid or its salts.

[0073] In addition to natural media consisting of natural products, such as shochu distillation waste liquid media and soybean extract media, the following components are used as media in the fermentation method: Carbon sources, such as glucose, fructose, galactose, sucrose, maltose, mannose, lactose, glycerol, and starch; Inorganic nitrogen sources, such as ammonium sulfate, ammonium phosphate, and ammonium hydrochloride; Organic nitrogen sources, such as glutamic acid or its salts, aspartic acid and its salts; major inorganic salts, such as sodium chloride, magnesium sulfate, monopotassium phosphate, phosphorus, and disodium phosphate; Trace inorganic salts containing elements such as iron, copper, zinc, cobalt, nickel, boron, manganese, molybdenum, tin, selenium, silicon, arsenic, vanadium, chromium, and fluorine; Vitamins, such as biotin, nicotinamide, calcium pantothenate, thiamine, riboflavin, and pyridoxine hydrochloride; Organic acids, such as citric acid, tartaric acid, malic acid, and glycolic acid; and Natural product extracts, such as yeast extract, meat extract, potato extract, tomato extract, and soy peptides. Any synthetic medium or semi-synthetic medium composed of any one of the above may be used at any concentration.

[0074] The culture conditions for microorganisms can be set in the range of 20°C to 37°C in terms of temperature, and may be further controlled during the microbial growth process and the polyglutamic acid production process. The pH can be set in the range of 5.0 to 8.0, and may be further controlled during the microbial growth process and the polyglutamic acid production process.

[0075] As a method for extracting and purifying (b) polyglutamic acid or its salts from the culture solution after the completion of cultivation, known methods such as acid precipitation, solvent precipitation, and membrane purification can be selected at discretion.

[0076] (b) It is preferable to use polyglutamic acid or an alkali metal salt thereof, such as sodium polyglutamate, as the polyglutamic acid or its salt.

[0077] Therefore, (b) the polyglutamic acid or its salt is preferably selected from the group consisting of polyglutamic acid, sodium polyglutamate, and mixtures thereof.

[0078] (b) Commercial products may be used as polyglutamic acid or its salts. (b) Examples of polyglutamic acid or its salts include Hyafactor(trademark)-PGA-HM sold by Bloomage Biotechnology Co., Ltd. in China, and Bio PGA Solutions HE, HB, LB and LE and Bio PGA Na powder sold by Ichimaru Falcos Co., Ltd. in Japan.

[0079] The amount of (b) polyglutamic acid or its salt in the composition according to the present invention may be 0.001% by mass or more, preferably 0.005% by mass or more, and more preferably 0.01% by mass or more, based on the total mass of the composition.

[0080] The amount of (b) polyglutamic acid or its salt in the composition according to the present invention may be 3% by mass or less, preferably 2% by mass or less, and more preferably 1% by mass or less, based on the total mass of the composition.

[0081] The amount of (b) polyglutamic acid or its salt in the composition according to the present invention may be in the range of 0.001% to 3% by mass, preferably 0.005% to 2% by mass, and more preferably 0.01% to 1% by mass, based on the total mass of the composition.

[0082] (Diol) The composition according to the present invention comprises (c) at least one diol having at least one carbon chain containing seven or more carbon atoms. Two or more such (c) diols may be used in combination. Thus, a single type of such (c) diol may be used, or a combination of different types of such (c) diols may be used.

[0083] Hereafter, at least one type of diol having at least one carbon chain containing seven or more carbon atoms may simply be referred to as "(c) diol".

[0084] The term "diol" here refers to a compound having two alcohol functional groups. In other words, a diol is an alcohol having two hydroxyl groups.

[0085] (c) The number of carbon atoms in the carbon chain of the diol is 7 or more, preferably 8 or more. On the other hand, the number of carbon atoms in the carbon chain of the diol may be 14 or less, preferably 12 or less, and more preferably 10 or less. Therefore, the diol may have at least one carbon chain containing 7 to 14 carbon atoms, preferably 7 to 12 carbon atoms, and more preferably 7 to 10 carbon atoms. It may be even more preferable that the number of carbon atoms in the carbon chain of the diol be 7 or 8.

[0086] (c) The carbon chain containing seven or more carbon atoms in the diol may be linear or branched, and is preferably linear. The carbon chain may not be interrupted by heteroatoms, such as oxygen, sulfur, and nitrogen atoms. Therefore, the carbon chain may contain continuous carbon atoms.

[0087] (c) The number of carbon chains containing seven or more carbon atoms in the diol is not limited. (c) The number of carbon chains containing seven or more carbon atoms in the diol may be 1 to 3, more preferably 1 or 2, and even more preferably 1.

[0088] (c) The total number of carbon atoms in the diol may be 7 or more, preferably 8 or more. On the other hand, the total number of carbon atoms in the diol may be 14 or less, preferably 12 or less, more preferably 10 or less. Therefore, the total number of carbon atoms in the diol may be 7 to 14, preferably 7 to 12, more preferably 7 to 10. It may be even more preferable that the total number of carbon atoms in the diol be 7 or 8.

[0089] (c) Diols having at least one carbon chain containing seven or more carbon atoms may have divalent linear or branched hydrocarbon groups. (c) Divalent linear or branched hydrocarbon groups that may be present in the diol may be saturated or unsaturated. (c) Diols preferably contain divalent linear or branched saturated hydrocarbon groups, more preferably linear or branched alkylene groups, such as heptylene and octylene groups.

[0090] (c) A diol having at least one carbon chain containing seven or more carbon atoms may have a linear, branched, or cyclic molecular structure, as long as it has a carbon chain containing seven or more carbon atoms.

[0091] (c) A diol having at least one carbon chain containing seven or more carbon atoms, containing two hydroxyl groups, C 7~10 Diol, preferably C 7~9 Diol, more C 7~8 Diol is also acceptable.

[0092] (c) The diol having at least one carbon chain containing seven or more carbon atoms is more preferably selected from the group consisting of 1,8-octanediol, 2-ethyl-1,3-hexanediol, caprylyl glycol, and mixtures thereof.

[0093] (c) The diol having at least one carbon chain containing seven or more carbon atoms is more preferably caprylyl glycol.

[0094] The amount of (c) diol in the composition according to the present invention is more than 0.01% by mass, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0095] The amount of (c) diol in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0096] The amount of (c) diol in the composition according to the present invention may be more than 0.01% by mass and 15% by mass or less, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0097] (Chelating agent) The composition according to the present invention comprises (d) at least one chelating agent. A single type of chelating agent may be used, or two or more different types of chelating agents may be used in combination.

[0098] (d) The following can be listed as chelating agents: (i) Aminocarboxylic acids, for example, compounds with the following INCI names: diethylenetriaminepentaacetic acid (DTPA), ethylenediaminedisuccinate (EDDS), and trisodium ethylenediaminedisuccinate, for example Octaquest E30 from Octel; ethylenediaminetetraacetic acid (EDTA), ethylenediamine-N,N'-diglutaric acid (EDDG), glycinamide-N,N'-disuccinate (GADS), 2-hydroxypropylenediamine-N,N'-disuccinate (HPDDS), ethylenediamine-N,N'-bis(ortho-hydroxyphenylacetic acid) (EDDHA), N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycinediacetic acid (MGDA), N-2-hydroxyethyl-N,N-diacetic acid, and glyceryliminodiacetic acid (Reference EP-A-3) (as described in 17542 and EP-A-399133), iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and aspartate N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516102), beta-alanine-N,N'-diacetic acid, aspartate-N,N'-diacetic acid and aspartate-N-monoacetic acid (as described in EP-A-509382), chelating agents based on the following: iminodisuccinic acid (IDSA) (as described in EP-A-509382), ethanol diglycinate, phosphonobutanetricarboxylic acid, for example, compounds sold by Bayer under the reference name Bayhibit AM, tetrasodium glutamate diacetate (GLDA), for example, Dissolvine GL38 or 45S manufactured by Akzo Nobel, (ii) Chelating agents based on monophosphonic acid or polyphosphonic acid, for example, compounds having the following INCI names: diethylenetriaminepenta(methylenephosphonic acid) (DTPMP), ethane-1-hydroxy-1,1,2-triphosphonic acid (E1HTP), ethane-2-hydroxy-1,1,2-triphosphonic acid (E2HTP), ethane-1-hydroxy-1,1-diphosphonic acid (EHDP), ethane-1,1,2-triphosphonic acid (ETP), ethylenediaminetetramethylenephosphonic acid (EDTMP), and hydroxyethane-1,1-diphosphonic acid (HEDP), and (iii) Polyphosphate-based chelating agents, for example, compounds having the following INCI names: sodium tripolyphosphate (STP), tetrasodium diphosphate, hexametaphosphate, sodium metaphosphate, phytic acid, its salts and derivatives, and These mixtures.

[0099] (d) The chelating agent is preferably biodegradable. In this sense, EDTA, which is not biodegradable, is undesirable as a (d) chelating agent. Therefore, it is preferable not to use EDTA as a (d) chelating agent. Furthermore, the composition according to the present invention is preferably EDTA-free.

[0100] The term "free" here means that the composition according to the present invention may contain a limited amount of EDTA. However, the amount of EDTA is preferably limited to less than 1% by mass, more preferably less than 0.1% by mass, and even more preferably less than 0.01% by mass, based on the total mass of the composition. Most preferably, the composition according to the present invention does not contain EDTA.

[0101] (d) The chelating agent is preferably selected from (poly)amino(poly)carboxylic acids, i.e., aminocarboxylic acids having one or more amino moieties and / or one or more carboxyl moieties.

[0102] (d) The chelating agent is more preferably selected from the group consisting of trisodium ethylenediaminedisuccinate, trisodium NTA, pentasodium pentetate, and mixtures thereof.

[0103] (d) The chelating agent is more preferably trisodium ethylenediaminedisuccinate.

[0104] The amount of (d) chelating agent in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0105] The amount of (d) chelating agent in the composition according to the present invention may be 5% by mass or less, preferably 3% by mass or less, and more preferably 1% by mass or less, based on the total mass of the composition.

[0106] The amount of (d) chelating agent in the composition according to the present invention may be in the range of 0.01% to 5% by mass, preferably 0.05% to 3% by mass, and more preferably 0.1% to 1% by mass, based on the total mass of the composition.

[0107] (water) The composition according to the present invention may contain (e) water.

[0108] The amount of (e) water in the composition according to the present invention may be 50% by mass or more, preferably 60% by mass or more, and more preferably 70% by mass or more, based on the total mass of the composition.

[0109] The amount of water (e) in the composition according to the present invention may be 95% by mass or less, preferably 90% by mass or less, and more preferably 85% by mass or less, based on the total mass of the composition.

[0110] The amount of (e) water in the composition according to the present invention may be in the range of 50% to 95% by mass, preferably 60% to 90% by mass, and more preferably 70% to 85% by mass, based on the total mass of the composition.

[0111] (pH) The pH of the composition according to the present invention may be less than 7.0, preferably less than 6.5, and more preferably less than 6.3.

[0112] The pH of the composition according to the present invention may be 3.0 or higher, preferably 3.5 or higher, and more preferably 4.0 or higher.

[0113] For example, the pH of the composition according to the present invention may be 3.0 to less than 7.0, preferably 3.5 to less than 6.5, and more preferably 4.0 to less than 6.3.

[0114] The pH of the composition according to the present invention can be adjusted by adding at least one alkaline agent and / or at least one acid, or a salt thereof. The pH of the composition according to the present invention can also be adjusted by adding at least one buffering agent.

[0115] (Embodiment) According to a preferred embodiment, the composition according to the present invention is, with respect to the total mass of the composition, (a) At least one active ingredient for skin care selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof, (b) at least one polyglutamic acid or a salt thereof in an amount of 0.001% to 3% by mass, (c) at least one diol having at least one carbon chain containing seven or more carbon atoms, in an amount of 0.01% to 15% by mass, (d) at least one chelating agent in an amount of 0.01% to 5% by mass Includes, (a1) The amount of sugars is between 0.1% by mass and 15% by mass. (a2) The amount of plant-derived protein ranges from 0.01% by mass to 15% by mass.

[0116] According to a more preferred embodiment, the composition according to the present invention is, with respect to the total mass of the composition, (a')(a1') disaccharides, (a2') hydrolyzed plant proteins, and at least one active ingredient for skin care selected from the group consisting of these, (b') 0.005% to 2% by mass of (b') at least one polyglutamic acid or its alkali metal salt, 0.05% to 10% by mass of (c')1,8-octanediol, 2-ethyl-1,3-hexanediol, caprylyl glycol, and mixtures thereof, comprising at least one diol having at least one carbon chain containing seven or more carbon atoms, A chelating agent selected from (d')(poly)amino(poly)carboxylic acid in an amount of 0.05% to 3% by mass, and Includes, (a1') The amount of disaccharides is between 0.5% by mass and 10% by mass. (a2') The amount of plant-derived protein ranges from 0.05% by mass to 10% by mass.

[0117] According to a more preferred embodiment, the composition according to the present invention is, with respect to the total mass of the composition, (a)(a1)Trehalose, (a2)Plant-derived proteins selected from the group consisting of hydrolyzed pea protein, hydrolyzed soy protein, hydrolyzed wheat protein, hydrolyzed rice protein, hydrolyzed corn protein, plant-derived recombinant silk protein, and mixtures thereof, and at least one active ingredient for skin care selected from the group consisting of mixtures thereof, 0.01% to 1% by mass of at least one polyglutamic acid or salt thereof selected from the group consisting of (b) polyglutamic acid, sodium polyglutamate, and mixtures thereof, 0.1% to 5% by mass of caprylyl glycol having at least one carbon chain containing seven or more carbon atoms, and at least one diol, A chelating agent comprising 0.1% to 1% by mass of (d) trisodium ethylenediaminedisuccinate and Includes, (a1) The amount of trehalose is between 1% by mass and 5% by mass. (a2) The amount of plant-derived protein ranges from 0.1% by mass to 5% by mass.

[0118] (Additional optional components) In addition to the components described above, the compositions according to the present invention may also contain, to the extent that they do not impair the effects of the present invention, any optional components typically used in cosmetics, specifically, polyols other than component (c); organic or inorganic UV shielding agents; surfactants or emulsifiers, hydrophilic or lipophilic thickeners; colorants; cationic polymers, anionic polymers, amphoteric polymers and nonionic polymers; silicones and silicone derivatives; natural extracts derived from animals or plants; oils; preservatives, etc.

[0119] The compositions according to the present invention may further contain at least one organic solvent. The organic solvent is preferably miscible with water. Examples of organic solvents include C1-C4 alkanols, such as ethanol and isopropanol; aromatic alcohols, such as benzyl alcohol and phenoxyethanol; similar products; and mixtures thereof.

[0120] The organic solvent may be present in an amount of 0.01% by mass or more, preferably 0.1% by mass or more, and more preferably 1% by mass or more, relative to the total mass of the composition according to the present invention.

[0121] The organic solvent may be present in an amount of 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, relative to the total mass of the composition according to the present invention.

[0122] The organic solvent may be present in an amount ranging from 0.01% to 15% by mass, preferably 0.1% to 10% by mass, and more preferably 1% to 5% by mass, relative to the total mass of the composition according to the present invention.

[0123] The composition according to the present invention may contain a limited amount of oil.

[0124] The amount of oil in the composition according to the present invention may be 1% by mass or less, preferably 0.5% by mass or less, and more preferably 0.1% by mass or less, based on the total mass of the composition. It may be particularly preferable that the composition according to the present invention contains 0.01% by mass or less of oil based on the total mass of the composition.

[0125] Preferably, the composition according to the present invention contains a very limited amount of silicone.

[0126] Preferably, the amount of silicone, such as organopolysiloxane, in the composition according to the present invention is 1% by mass or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less, based on the total mass of the composition. It is particularly preferable that the composition according to the present invention does not contain silicone.

[0127] (preparation) The compositions according to the present invention can be prepared by mixing the essential components described above and, if necessary, the optional components described above.

[0128] The methods and means for mixing the above-mentioned essential and optional components are not limited. Compositions according to the present invention can be prepared by mixing the above-mentioned essential and optional components using any conventional methods and means. Conventional methods and means include homogenizers, such as turbine mixers.

[0129] (Beauty use) The compositions according to the present invention may be intended for use as cosmetic compositions. Therefore, the cosmetic compositions according to the present invention may be intended for application to keratinous substances.

[0130] In this context, "keratinous material" refers to a material that contains keratin as its main component, and examples include skin, scalp, nails, lips, and hair. Therefore, the cosmetic composition according to the present invention is preferably used as a cosmetic composition for keratinous materials such as skin.

[0131] Therefore, the cosmetic composition according to the present invention may be a skin cosmetic composition, preferably a skin care composition or a skin makeup composition, and more preferably a skin care composition.

[0132] The composition according to the present invention is suitable as a skin care cosmetic composition because it (a) contains a skin care active ingredient. For example, the composition according to the present invention can be used to humidify the skin.

[0133] The composition according to the present invention is preferably a leave-on type. In other words, the composition according to the present invention is preferably used on keratinous substances such as skin without rinsing. Therefore, the composition according to the present invention is preferably not a cleansing composition.

[0134] (form) The compositions according to the present invention may be in various forms. For example, the compositions according to the present invention may be in the form of a solution, emulsion, or dispersion.

[0135] The composition according to the present invention may be in the form of a fluid, such as a liquid, at room temperature (25°C) and atmospheric pressure (760 mmHg).

[0136] The composition according to the present invention may be transparent or translucent.

[0137] [Beauty methods and usage] The present invention also relates to a cosmetic method for keratinous substances such as skin, comprising the step of applying a composition according to the present invention to the keratinous substance.

[0138] In this context, "cosmetic methods" refers to non-therapeutic cosmetic methods used to care for and / or apply makeup to the surface of keratinous substances such as skin.

[0139] The present invention also includes, in a composition, (a) At least one active ingredient for skin care selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof, (b) at least one polyglutamic acid or a salt thereof (c) at least one diol having at least one carbon chain containing seven or more carbon atoms, and (d) at least one chelating agent The use of a combination of, This also relates to the use of the composition to reduce tackiness and improve skin affinity.

[0140] The compositions described above may contain any of the optional components described above, for example, (e) water.

[0141] The above description of the compositions according to the present invention, relating to (a) a skin care active ingredient, (b) polyglutamic acid or a salt thereof, (c) a diol having at least one carbon chain containing seven or more carbon atoms, and (d) a chelating agent, as well as an optional ingredient, such as (e) water, can also be applied to the description of the use according to the present invention as described above. [Examples]

[0142] The present invention will be described in more detail by examples, but this should not be interpreted as limiting the scope of the invention.

[0143] (Examples 1-2 and Comparative Examples 1-8) [Preparation] The following compositions, shown in Table 1, according to Examples 1-2 and Comparative Examples 1-8, were prepared by mixing the components shown in Table 1. The symbols (a1) and (a2) in Table 1 correspond to those in the claims.

[0144] All numerical values ​​for the amounts of components shown in Table 1 are based on the "mass %" of the raw materials. The term "0.1AM" in Table 1 means the amount of raw material containing component (c) such that the amount of the active substance (hydrolyzed soy protein) in the composition is 0.1% by mass of the total mass of the composition.

[0145] [Table 1]

[0146] [evaluation] (contact angle) Equal amounts of the compositions from Examples 1-2 and Comparative Examples 1-8 were dropped onto the surface of an artificial skin plate (a BioSkin plate with a smooth surface manufactured by Viewlux). The contact angle of the droplets on the artificial skin plate was measured. Measurement and analysis were performed using a DATAPHYSICS OCA 15 PLUS Optical Contact Angle Measuring Device with SCA20 software. The measurement was repeated three times, and the six measured values ​​were averaged.

[0147] The results are shown in Table 1.

[0148] (Skin affinity) Based on the contact angle values ​​measured as described above, the skin affinity of each composition from Examples 1-2 and Comparative Examples 1-8 was evaluated according to the following criteria. Good: Less than 60° OK: 60° or more and less than 70° Defective: 70° or more

[0149] The results are shown in Table 1.

[0150] (sticky) Four panelists evaluated the texture of each composition from Examples 1-2 and Comparative Examples 1-8 in terms of tackiness at the time of application. Specifically, each panelist applied each composition to their hand, spread it, and evaluated its tackiness, scoring it on a scale from 1 (low) to 3 (high). These scores were then averaged. The average scores were then categorized into the following three categories based on the average of the scores. Good: 2.5 to 3 Acceptable: Between 2.0 and less than 2.5 Defective: 1.0 to less than 2.0

[0151] The results are shown in Table 1.

[0152] (summary) As is clear from Table 1, the compositions according to Examples 1 and 2, comprising component (a1) or (a2) and components (b) through (d), provided good skin affinity and low tackiness.

[0153] On the other hand, compositions according to Comparative Examples 1-8, which did not contain at least one of components (a) to (d), failed to provide good skin affinity and exhibited greater tackiness.

Claims

1. (a) At least one active ingredient for skin care selected from the group consisting of (a1) sugars, (a2) plant-derived proteins, and mixtures thereof, (b) at least one polyglutamic acid or a salt thereof, (c) At least one diol having at least one carbon chain containing seven or more carbon atoms, (d) at least one chelating agent and A composition comprising, preferably a cosmetic composition, more preferably a skin cosmetic composition.

2. (a1) The composition according to claim 1, wherein the sugar is selected from disaccharides, preferably from the group consisting of sucrose, lactulose, lactose, maltose, trehalose, cellobiose, and mixtures thereof, and more preferably trehalose.

3. The composition according to claim 1 or 2, wherein the amount of (a1) sugars in the composition is in the range of 0.1% to 15% by mass, preferably 0.5% to 10% by mass, and more preferably 1% to 5% by mass, based on the total mass of the composition.

4. (a2) The composition according to any one of claims 1 to 3, wherein the plant-derived protein is selected from hydrolyzed plant proteins, preferably from the group consisting of hydrolyzed pea protein, hydrolyzed soy protein, hydrolyzed wheat protein, hydrolyzed rice protein, hydrolyzed corn protein, recombinant silk protein of plant origin, and mixtures thereof, and more preferably hydrolyzed rice protein.

5. The composition according to any one of claims 1 to 4, wherein the amount of (a2) plant-derived protein in the composition is in the range of 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

6. (b) The composition according to any one of claims 1 to 5, wherein the polyglutamic acid or a salt thereof is selected from the group consisting of polyglutamic acid, sodium polyglutamate, and mixtures thereof.

7. The composition according to any one of claims 1 to 6, wherein the amount of (b) polyglutamic acid or a salt thereof in the composition is in the range of 0.001% to 3% by mass, preferably 0.005% to 2% by mass, and more preferably 0.01% to 1% by mass, based on the total mass of the composition.

8. (c) The composition according to any one of claims 1 to 7, wherein the diol has at least one carbon chain comprising 7 to 14 carbon atoms, preferably 7 to 12 carbon atoms, more preferably 7 to 10 carbon atoms, and even more preferably 7 or 8 carbon atoms.

9. (c) The composition according to any one of claims 1 to 8, wherein the diol has 1 to 3 carbon chains, preferably 1 or 2 carbon chains, more preferably 1 carbon chain, with each carbon chain containing 7 to 14 carbon atoms, preferably 7 to 12 carbon atoms, more preferably 7 to 10 carbon atoms, and even more preferably 7 or 8 carbon atoms.

10. (c) The composition according to any one of claims 1 to 9, wherein the diol is selected from the group consisting of 1,8-octanediol, 2-ethyl-1,3-hexanediol, caprylyl glycol, and mixtures thereof, and is preferably caprylyl glycol.

11. The composition according to any one of claims 1 to 10, wherein the amount of (c) diol in the composition is in the range of 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

12. (d) The composition according to any one of claims 1 to 11, wherein the chelating agent is selected from (poly)amino(poly)carboxylic acids, preferably from the group consisting of trisodium ethylenediaminedisuccinate, trisodium NTA, pentasodium pentetate, and mixtures thereof, and more preferably trisodium ethylenediaminedisuccinate.

13. The composition according to any one of claims 1 to 12, wherein the amount of (d) chelating agent in the composition is in the range of 0.01% to 5% by mass, preferably 0.05% to 3% by mass, and more preferably 0.1% to 1% by mass, based on the total mass of the composition.

14. (e) The composition according to any one of claims 1 to 13, further comprising water.

15. A cosmetic method for keratinous substances such as skin, comprising the step of applying a composition according to any one of claims 1 to 14 to the keratinous substance.

Images