CN112351769A - Cosmetic material - Google Patents
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- CN112351769A CN112351769A CN201980043317.4A CN201980043317A CN112351769A CN 112351769 A CN112351769 A CN 112351769A CN 201980043317 A CN201980043317 A CN 201980043317A CN 112351769 A CN112351769 A CN 112351769A
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- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
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- A61K8/00—Cosmetics or similar toiletry preparations
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- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/20—Halogens; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
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- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/39—Derivatives containing from 2 to 10 oxyalkylene groups
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/86—Polyethers
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/14—Preparations for removing make-up
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/30—Characterized by the absence of a particular group of ingredients
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Abstract
Provided is a cosmetic which has two water layers and an oil layer stably and has excellent aesthetic properties. A cosmetic material comprising component (A): dextran having a number average molecular weight of 5 to 30 ten thousand, a component (B): polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand, a component (C): electrolyte, component (D): ionic surfactant, component (E): water, and component (F): an oily component, wherein the content of the component (A) is 2.0 to 10.0% by mass, the content of the component (B) is 2.0 to 10.0% by mass, and the content of the component (C) is 0.05 to 1.4% by mass, based on the total amount of the cosmetic except for the component (F).
Description
Technical Field
The present invention relates to a cosmetic. More particularly, the present invention relates to a three-layer cosmetic composition in which two water layers and an oil layer are stably present.
Background
Conventionally, a multilayered (multilayer type) cosmetic material having an appearance separated into two or three layers has been known from the viewpoint of improving functionality and aesthetic quality. As the most common cosmetic materials of the two-layer type, a cosmetic material of the two-layer type separated into an oil layer and an aqueous layer (see patent document 1) and a cosmetic material of the two-layer type of an oil layer and an oil layer (see patent document 2) are known. As a three-layer cosmetic, for example, there are known: three-layer cosmetics of an oil layer, a surfactant layer and an aqueous layer (see patent documents 3 and 4); a three-layer cosmetic material comprising an oil layer, a surfactant layer and a polyol layer (see patent document 5); oil layer-water layer three-layer cosmetic, etc. In addition, there are also many cosmetic materials of the so-called two-layer type due to powder sedimentation layers and water layers.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-139411
Patent document 2: japanese laid-open patent publication No. 2004-115485
Patent document 3: japanese patent laid-open publication No. 2005-206557
Patent document 4: japanese patent laid-open No. 2008-290960
Patent document 5: japanese laid-open patent publication No. 4-290810
Disclosure of Invention
Problems to be solved by the invention
However, in the multilayered cosmetic, it is difficult to stably exist two or more water layers. Conventionally, the following methods are known: two or more different polymers are mixed in the water layer, and the two or more water layers are formed by utilizing the repellent effect of the polymers, but from the viewpoint of exerting a sufficient repellent effect, a polymer having a large molecular weight and a relatively high concentration is mixed. Therefore, such a composition having two or more water layers does not have a preferable feeling of use as a skin cosmetic. Further, a cosmetic having two or more layers of an aqueous layer and an oil layer has not been known so far.
Accordingly, an object of the present invention is to provide a cosmetic which has two water layers and an oil layer stably present and which is excellent in aesthetic quality.
Means for solving the problems
The present inventors have conducted intensive studies to achieve the above object and as a result, have found that a cosmetic material which comprises a specific glucan, a specific polyethylene glycol, an electrolyte, and further an ionic surfactant, water, and an oil component at specific ratios can provide a cosmetic material which has two water layers and an oil layer stably present and which is excellent in aesthetic properties. The present invention has been completed based on these technical ideas.
That is, the present invention provides a cosmetic composition comprising the following component (a), the following component (B), the following component (C), the following component (D), the following component (E), and the following component (F), wherein the content of the component (a) is 2.0 to 10.0 mass%, the content of the component (B) is 2.0 to 10.0 mass%, and the content of the component (C) is 0.05 to 1.4 mass%, based on the total amount of the cosmetic composition excluding the component (F).
Component (A): dextran with 5-30 ten thousand number average molecular weight
Component (B): polyethylene glycol with number average molecular weight of 4000-3 ten thousand
Component (C): electrolyte
Component (D): ionic surfactant
Component (E): water (W)
Component (F): oily component
The cosmetic composition preferably further contains the following component (G).
Component (G): one or more polyols selected from the group consisting of polyoxyalkylene alkyl glucoside, propylene glycol, dipropylene glycol, and polyethylene glycol having a number average molecular weight of 2000 or less
The cosmetic is preferably substantially free of nonionic surfactants.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the cosmetic of the present invention, a cosmetic having two water layers and an oil layer stably present and having excellent aesthetic properties can be obtained. Therefore, the cosmetic of the present invention can provide a cosmetic excellent in aesthetic quality and also excellent in feeling of use. In particular, stickiness upon application to the skin can be suppressed.
Drawings
Fig. 1 is a schematic view showing one embodiment of the appearance of the cosmetic of the present invention.
Detailed Description
The cosmetic of the present invention comprises at least dextran having a number average molecular weight of 5 to 30 ten thousand, polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand, an electrolyte, an ionic surfactant, water, and an oily component. In the present specification, dextran having a number average molecular weight of 5 to 30 ten thousand may be referred to as "component (a)", polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand may be referred to as "component (B)", an electrolyte may be referred to as "component (C)", an ionic surfactant may be referred to as "component (D)", water may be referred to as "component (E)", and an oil component may be referred to as "component (F)".
The cosmetic of the present invention preferably further contains at least one polyol selected from the group consisting of polyoxyalkylene alkyl glucoside, propylene glycol, dipropylene glycol, and polyethylene glycol having a number average molecular weight of 2000 or less. In the present specification, the "one or more polyols selected from the group consisting of polyoxyalkylene alkyl glucoside, propylene glycol, dipropylene glycol, and polyethylene glycol having a number average molecular weight of 2000 or less" may be referred to as "component (G)".
That is, the cosmetic of the present invention contains at least component (a), component (B), component (C), component (D), component (E), and component (F). The cosmetic of the present invention preferably further contains component (G). The cosmetic of the present invention may contain components other than the above components (a) to (G). The cosmetic composition of the present invention may contain only one or two or more of each component, for example, component (a), component (B), component (C), component (D), component (E), component (F), component (G), and other components.
The cosmetic of the present invention is put in a container and left standing for a certain period of time, and the appearance becomes a multi-layer type comprising two water layers and one oil layer (for example, a three-layer type comprising two water layers and one oil layer). More specifically, for example, as shown in fig. 1, the cosmetic composition X of the present invention is a three-layer type cosmetic composition having layers in the order of an oil layer 1, a water layer 2 and a water layer 3 from above in a container 4. For example, the water layer 2 is a water layer containing polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand, and the water layer 3 is a water layer containing dextran having a number average molecular weight of 5 to 30 ten thousand.
The cosmetic of the present invention is used as a cosmetic since it is an emulsion when stirred in a container in the case of a three-layer type of oil layer/water layer. By forming the three-layer type in such a structure, unlike a skin cosmetic having a surfactant layer, stickiness, sliminess, and irritation to the skin at the time of application can be suppressed. In addition, in a three-layer type cosmetic having two oil layers, since the amount of the oil component blended is relatively large, there is a problem of generation of a feeling of oil film, but the cosmetic of the present invention can suppress such a problem. The cosmetic of the present invention has excellent re-separability of three layers after use after emulsification, and shows an interface between layers by standing for a certain period of time, thereby giving a three-layer appearance again.
[ component (A) ]
The component (A) is dextran (dextran) having a number average molecular weight of 5 to 30 ten thousand. The component (A) may be used alone or in combination of two or more.
The number average molecular weight of the component (A) is 5 to 30 ten thousand, preferably 5 to 22 ten thousand. When the number average molecular weight is 5 ten thousand or more, the effect of repelling the component (B) is improved, and a two-layer water layer can be formed. By setting the number average molecular weight to 30 ten thousand or less, stickiness when the cosmetic is applied to the skin can be suppressed, and the cosmetic is excellent in usability.
In the present specification, the number average molecular weight can be measured by, for example, Gel Permeation Chromatography (GPC).
As the component (A), commercially available products can be used. Examples of commercially available products of component (A) include a product name "high molecular dextran EH" and a product name "dextran 70" (manufactured by Nomamika sugar industries Co., Ltd.).
The content of the component (a) in the cosmetic of the present invention is 2.0 to 10.0% by mass, preferably 2.5 to 8.0% by mass, and more preferably 3.0 to 5.0% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention excluding the component (F) (i.e., the total amount of the components other than the component (F)). By setting the content to 2.0 mass% or more, a two-layer water layer can be stably formed. By setting the content to 10.0% by mass or less, stickiness when the cosmetic is applied to the skin can be suppressed, and the cosmetic is excellent in usability. The content ratio of the component (a) is the total of the content ratios of all the components (a) in the cosmetic of the present invention.
[ component (B) ]
The component (B) is polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand. The component (B) may be used alone or in combination of two or more.
The number average molecular weight of the component (B) is 4000 to 3 ten thousand, preferably 6000 to 25000, and more preferably 1 to 2 ten thousand. When the number average molecular weight is 4000 or more, the repellent effect to the component (a) is improved, and a two-layer water layer can be formed. By setting the number average molecular weight to 3 ten thousand or less, stickiness when the cosmetic is applied to the skin can be suppressed, and the cosmetic is excellent in usability.
As the component (B), commercially available products can be used. Examples of commercially available products of component (B) include a product name "PEG # 20000", a product name "PEG # 11000", a product name "PEG # 6000" (manufactured by Nizhi oil Co., Ltd.), and a product name "BLAUNON PEG-20000S" (manufactured by Qingmu oil and fat industries, Ltd.).
The content of the component (B) in the cosmetic of the present invention is 2.0 to 10.0% by mass, preferably 2.0 to 8.0% by mass, and more preferably 2.0 to 5.0% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention excluding the component (F). By setting the content to 2.0 mass% or more, a two-layer water layer can be stably formed. By setting the content to 10.0% by mass or less, stickiness when the cosmetic is applied to the skin can be suppressed, and the cosmetic is excellent in usability. The content ratio of the component (B) is the total of the content ratios of all the components (B) in the cosmetic of the present invention.
The cosmetic of the present invention contains the component (a) and the component (B) at the above-described content ratios, respectively, and can be separated into an aqueous layer containing the component (a) and an aqueous layer containing the component (B) by utilizing the body-repelling effect of the component (a) and the component (B).
[ component (C) ]
The component (C) is an electrolyte. The cosmetic of the present invention contains the component (C), and after forming an emulsion by stirring, the cosmetic can promote the floating of the oily component of the emulsion (creaming) when left standing for a certain period of time, can adjust the speed at which creaming and emulsion are unified, and is excellent in aesthetic quality when returned to a multilayered form. The component (C) may be used alone or in combination of two or more.
The component (C) is not particularly limited, and examples thereof include metal salts (e.g., monovalent metal salts, divalent or higher polyvalent metal salts, etc.). The metal salt may be an inorganic salt or an organic salt. Examples of the metal salt include sodium salt, potassium salt, calcium salt, magnesium salt, zinc salt, ammonium salt, and aluminum salt. Specific examples of the component (C) include zinc p-phenolsulfonate, sodium chloride, potassium chloride, calcium chloride, magnesium sulfate, alum, sodium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, ammonium chloride, sodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium citrate (trisodium citrate), disodium ethylenediaminetetraacetate, and potassium aluminum sulfate. Benzalkonium chloride and aluminum chlorohydrate may also be mentioned.
The content of the component (C) in the cosmetic of the present invention is 0.05 to 1.4% by mass, preferably 0.1 to 1.0% by mass, and more preferably 0.2 to 0.8% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention excluding the component (F). By setting the content ratio to 0.05% by mass or more, the time required for separating the layers after emulsification of the cosmetic can be shortened. Further, the emulsion stratification can be promoted, the balance between the emulsion stratification speed and the emulsion stratification speed becomes appropriate, and the coalescence occurs after the appropriate emulsion stratification, so that the adhesion of the oil component generated by the unification to the container wall surface can be suppressed, and the aesthetic appearance when the container is returned to a multi-layered state is excellent. When the content ratio is 1.4% by mass or less, the layering speed of the emulsion is moderately lowered, and therefore, the time required for the layers to be separated is not excessively shortened, and the usability of the cosmetic is improved. The content ratio of the component (C) is the total of the content ratios of all the components (C) in the cosmetic of the present invention.
[ component (D) ]
The component (D) is an ionic surfactant. Examples of the component (D) include anionic surfactants, cationic surfactants, and amphoteric surfactants. The component (D) can promote the unification of emulsions. In the cosmetic of the present invention, the component (D) is oriented at the oil-water interface, and the film strength at the interface is presumably weakened, so that the rate of integration of emulsions can be increased. The component (D) may be used alone or in combination of two or more.
Examples of the anionic surfactant include higher fatty acid soaps, alkyl sulfate ester salts, alkyl phosphates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkylphenyl ether sulfates, alkyl ether phosphate esters, alkyl ether carboxylates, acyl methyl taurates, N-acyl-N-methyl- β -alanates, N-acyl glycinates, N-acyl glutamates, polyoxyethylene alkyl carboxylates, alkylphenyl ether sulfonates, alkylsulfosuccinic acid and its salts, N-acyl sarcosines and its salts, and polyoxyethylene oil coconut fatty acid monoethanolamide sulfates.
Examples of the cationic surfactant include amino acid-based cationic surfactants, amine salts such as alkylamine salts, fatty amide amine salts and ester-containing tertiary amine salts, alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts and benzalkonium quaternary ammonium salts, cyclic quaternary ammonium salts such as alkylpyridinium salts, and benzethonium chloride. Among them, cationic surfactants having a structure with a large volume are preferable, and benzalkonium chloride, N-coconut oil fatty acid acyl-L-arginylethyl DL-pyrrolidone carboxylate, and the like are preferable.
Examples of the amphoteric surfactant include glycine-type amphoteric surfactants such as alkyl glycinate, carboxymethyl glycinate and N-acylaminoethyl-N-2-hydroxyethyl glycinate, aminopropionic acid-type amphoteric surfactants such as alkyl aminopropionate and alkyliminodipropionate, aminoacetic acid betaine-type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amide propyldimethylaminoacetic acid betaine, and sulfobetaine-type amphoteric surfactants such as alkylhydroxysulfobetaine.
As component (D), benzalkonium chloride and/or N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate are preferred, and N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate is particularly preferred.
The content of the component (D) in the cosmetic of the present invention is not particularly limited, but is preferably 0.005 to 0.1% by mass, more preferably 0.008 to 0.05% by mass, and still more preferably 0.01 to 0.05% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention except for the component (F). When the content ratio is 0.005% by mass or more, the emulsion can be further integrated, and the time required for separating the layers can be shortened after the cosmetic is emulsified by stirring. When the content ratio is 0.1% by mass or less, the rate of unitization of the emulsion can be prevented from becoming too high, and the emulsion state can be maintained for a certain period of time after the cosmetic is emulsified by stirring. Therefore, the usability of the cosmetic is improved. In addition, the emulsion-integration speed of the cosmetic in the emulsion state can be optimized by setting the content within the above range. The content ratio of the component (D) is the total of the content ratios of all the components (D) in the cosmetic of the present invention.
[ component (E) ]
Component (E) is water, but is not particularly limited, and is preferably purified water. Component (E) is a component that serves as a medium for two aqueous layers in the cosmetic preparation of the present invention. The content ratio of the component (E) in the cosmetic of the present invention is preferably 60.0 to 95.0% by mass, more preferably 70.0 to 90.0% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention excluding the component (F).
[ component (F) ]
The component (F) is an oily component. Examples of the component (F) include vegetable oils, ester oils, silicone oils, hydrocarbon oils, waxes, and higher alcohols. Ingredient (F) forms an oil layer in the cosmetic of the present invention. The component (F) may be used alone or in combination of two or more.
Examples of the vegetable oil include macadamia nut oil, eucalyptus oil, coconut oil, avocado oil, safflower oil, olive oil, palm kernel oil, macadamia nut oil, Shea butter (Shea butter), cocoa butter, almond oil, sunflower oil, rose hip oil, olive squalane, camellia oil, kiwi seed oil, camellia oil, almond oil, sesame oil, soybean oil, jojoba oil, castor oil, hazelnut oil, meadowfoam oil, peppermint oil, argan oil, carrot oil, lavender oil, squalane, damask rose wax, maifanghua wax, camellia oil, and hydrogenated products thereof (for example, hydrogenated castor oil, hydrogenated jojoba oil, hydrogenated palm oil, hydrogenated avocado oil, hydrogenated soybean oil, and the like).
Examples of the ester oil include ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, 2-ethylhexyl palmitate, octyldodecyl myristate, isopropyl isostearate, propylene glycol isostearate, cetyl 2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl tri (octanoate/decanoate), isononyl isononanoate, diisopropyl adipate, pentaerythritol tetraoctanoate, pentaerythritol tetraisostearate, diisostearyl malate, erythrol triethylhexanoate, 2-ethylhexyl hydroxystearate, dipentaerythritol hexakishydroxystearate/stearate/abietic acid, dipentaerythritol tetrakis (hydroxystearate/isostearate), pentaerythritol hexahydrohydroxystearate, pentaerythritol hexahydroxystearate, myristyl myristate, myristyl palmitate, glyceryl palmitostearate, glyceryl (ethylhexanoate/stearate/adipate), glyceryl tri (caprylic/capric/myristic/stearate), dipentaerythritol hexa (behenate/benzoate/ethylhexanoate), alkyl (C12-15) benzoate, and the like.
The silicone oil is not particularly limited, and examples thereof include: dimethyl silicone oil such as methyl polysiloxane and high-polymerized methyl polysiloxane; methyl phenyl silicone oil such as methyl phenyl polysiloxane; cyclic silicone oils such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; modified silicones such as amino-modified silicones such as aminopropylmethylsiloxane-dimethylsiloxane copolymers, aminoethylaminopropylsiloxane-dimethylsiloxane copolymers and aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymers, carboxyl-modified silicones, fatty acid-modified silicones, alcohol-modified silicones, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones, and alkyl-modified silicones; methylhydrogenpolysiloxanes, dimethiconols, and the like.
Examples of the hydrocarbon oil include α -olefin oligomers, vaseline, isoparaffin, light liquid isoparaffin, squalane, synthetic squalane, vegetable squalane, liquid isoparaffin, liquid paraffin, hydrogenated polyisobutene, hydrogenated (tetradecenyl/methylpentadecene), and isododecane.
Examples of the wax include carnauba wax, candelilla wax, beeswax, rice bran wax, shellac wax, spermaceti, lanolin, and sunflower seed wax.
Examples of the higher alcohol include cetyl alcohol, stearyl alcohol, isostearyl alcohol, myristyl alcohol, 2-octyldodecanol, oleyl alcohol, and the like.
The content of the component (F) in the cosmetic of the present invention is not particularly limited, and is preferably 5.0 mass% or more, and more preferably 7.0 mass% or more, based on 100 mass% of the total amount of the cosmetic of the present invention. When the content ratio is 5.0% by mass or more, formation of an oil layer can be sufficiently confirmed by visual observation. The content ratio is preferably 60.0% by mass or less, and more preferably 50.0% by mass or less. When the content is 60.0% by mass or less, the oily feeling and stickiness due to the oily component can be suppressed, and the cosmetic composition is excellent in use feeling. The content ratio of the component (F) is the total of the content ratios of all the components (F) in the cosmetic of the present invention.
[ component (G) ]
The component (G) is at least one polyol selected from the group consisting of polyoxyalkylene alkyl glucoside, propylene glycol, dipropylene glycol, and polyethylene glycol having a number average molecular weight of 2000 or less. In the case where the component (G) is contained, the separation rate of the two aqueous layers in the cosmetic of the present invention is increased. The component (G) may be used alone or in combination of two or more.
The polyethylene glycol that can be used as the component (G) has a number average molecular weight of 2000 or less, preferably 200 to 1800, and more preferably 400 to 1600.
As the polyoxyalkylene alkyl glucoside, for example, a polyoxyalkylene (e.g., ethylene oxide, propylene oxide, etc.) may be added to the alkyl glucoside. The average number of addition mols of the polyoxyalkylene is preferably about 1 to 20 mols. The alkyl group in the polyoxyalkylene alkyl glucoside is preferably an alkyl group having 1 to 4 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and an isopropyl group. As the polyoxyalkylene alkyl glucoside, polyoxyalkylene methyl glucoside is particularly preferable.
The polyoxyalkylene methyl glucoside is preferably polyoxyethylene methyl glucoside or polyoxypropylene methyl glucoside, and specific examples thereof include polyoxyethylene (10) methyl glucoside, polyoxyethylene (20) methyl glucoside, polyoxypropylene (10) methyl glucoside, and polyoxypropylene (20) methyl glucoside.
The content ratio of the component (G) in the cosmetic of the present invention is preferably 1.0 to 30.0% by mass, more preferably 2.0 to 20.0% by mass, and still more preferably 4.0 to 15.0% by mass, based on 100% by mass of the total amount of the cosmetic of the present invention except for the component (F). When the content ratio is 1.0% by mass or more, the separation rate of the two aqueous layers can be further increased. If the content ratio is 30.0% by mass or less, stickiness can be suppressed. The content ratio of the component (G) is the total of the content ratios of all the components (G) in the cosmetic of the present invention.
The cosmetic of the present invention preferably contains substantially no nonionic surfactant. It is to be noted that substantially free means that no active compounding is performed, except for the case where, for example, the presence is unavoidable. Specifically, the content of the nonionic surfactant in the cosmetic of the present invention is preferably 0.05% by mass or less, more preferably 0.01% by mass or less, and still more preferably 0.005% by mass or less, based on 100% by mass of the total amount of the cosmetic of the present invention excluding the component (F). The nonionic surfactant is used for inhibiting the unification of emulsions and the creaming when the cosmetic in an emulsion state returns to a multi-layer state. The content ratio of the nonionic surfactant is the total of the content ratios of all nonionic surfactants in the cosmetic composition of the present invention.
Examples of the nonionic surfactant include sorbitan fatty acid esters, glycerin fatty acid esters, alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterols and derivatives thereof, polyoxyethylene lanolin and derivatives thereof, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil.
[ other ingredients ]
The cosmetic of the present invention may contain components (other components) other than the above components (a) to (G) within a range not to impair the object of the present invention. The other components are not particularly limited, and examples thereof include those generally used in cosmetics and quasi drugs. Specifically, examples thereof include: thickeners such as carboxyvinyl polymer, acrylic acid/alkyl methacrylate copolymer, hydroxymethyl cellulose, hydroxypropyl methylcellulose, and xanthan gum; a humectant; a bactericide; a pearlescent agent; glycyrrhizic acid and its salt as anti-inflammatory agent; cooling agents such as menthol; a fragrance; an ultraviolet absorber; an antioxidant; a film-forming polymer compound; powder; a pigment; a pigment; vitamins; amino acids; an astringent; a whitening agent; an animal or plant extract; an acid; alkali, and the like.
The cosmetic of the present invention can be used for any of skin (skin) applications (for example, face, neck, scalp, shoulder, body, arm, elbow, palm, back of hand, leg, calf, knee, ankle, instep, arch, etc.), and hair applications. The cosmetic of the present invention is preferably a skin cosmetic because it can be used as a cleansing cosmetic by containing the component (F). The cosmetic of the present invention can be used as a hair oil by containing the component (F), and thus can be a hair cosmetic.
The cosmetic of the present invention is not particularly limited, and can be produced by a known or customary method. For example, the above-mentioned components may be mixed and stirred by a homomixer, a paddle mixer, or the like.
The cosmetic preparation of the present invention contains dextran having a number average molecular weight of 5 to 30 ten thousand [ component (a) ] and polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand [ component (B) ] in a specific ratio in a cosmetic preparation containing water [ component (E) ] as a medium, and thus can improve the body repellency effect of component (a) and component (B) while maintaining excellent feeling of use of the cosmetic preparation, and can form a two-layer water layer comprising an aqueous layer containing component (a) and an aqueous layer containing component (B). Further, by blending an oil component [ component (F) ] to form an oil layer, a multi-layered cosmetic having two water layers and an oil layer can be produced. The cosmetic of the present invention is important from the viewpoint of aesthetic quality because the cosmetic is stirred to form an emulsion when used, and after use, the oil layer and the two water layers are separated to form a multi-layered form again. Therefore, by mixing the electrolyte [ component (C) ] at a specific ratio, the emulsion stratification of the emulsion can be promoted, and by further mixing the ionic surfactant [ component (D) ], the unification of the emulsion can be promoted, and the balance between the emulsion stratification rate and the unification rate can be obtained. Thus, when the container is returned to the multi-layer type, the emulsion is more likely to be separated into layers in priority to the unitization, and the unitized oil component can be prevented from adhering to the container wall surface, and the aesthetic appearance can be improved.
Examples
The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. The compounding amounts shown in the tables are the amounts of the respective components mixed (i.e., the amounts of the effective components mixed in the respective raw materials, so-called pure components), and are expressed as "% by mass" unless otherwise specified.
Examples 1 to 22 and comparative examples 1 to 9
Each cosmetic of examples and comparative examples was prepared by a conventional method using each ingredient described in the table.
The main components shown in the table are as follows.
< ingredient (A) >
Dextran 70: a product name of "dextran 70", manufactured by Nippon Kogyo Co., Ltd., and having a number average molecular weight of 54000 to 85000
High-molecular dextran EH: a trade name of "high molecular dextran EH", manufactured by Nippon Kogyo Co., Ltd., and a number average molecular weight of 178000 to 217000
< ingredient (B) >
PEG 4000: trade name "PEG # 4000", manufactured by Nichii oil Co., Ltd., number average molecular weight 4000
PEG 6000: trade name "PEG # 6000", manufactured by Nichigan oil Co., Ltd., number average molecular weight 6000
PEG 10000: trade name "BLAUNON PEG-10000", manufactured by Qingmu oil & fat industries Ltd., number average molecular weight 10000
PEG 20000: the product name is "BLAUNON PEG-20000S", manufactured by Qingmu oil & fat industries, Ltd., and the number average molecular weight is 20000
< ingredient (C) >
Sodium chloride: trade name "ナクル M", Naikai Salt Industries Co., LTD
< ingredient (D) >
N-coconut oil fatty acid acyl-L-arginylethyl DL-pyrrolidone carboxylate: trade name "CAE", manufactured by Aomoto K.K
< ingredient (F) >
Polydimethylsiloxane: under the trade name "XIAAMETER PMX-200 SILICONE FLUID 1.5 CS", manufactured by Dow Corning Toray Co., Ltd., methylpolysiloxane
Light isoparaffins: trade name "MARUKASOL R", produced by Maruzen petrochemicals
Sunflower seed oil: sunflower seed oil having the trade name ハィ could レィツクひまわり oil, manufactured by oleomonotreal s.l. corporation
Liquid paraffin: trade name "CARNATION", manufactured by Sonneborn Inc
Liquid isoparaffins: trade name "PARLEAM EX", manufactured by Nissan oil Co., Ltd
< ingredient (G) >
Polyoxypropylene methyl glucoside: the product name is MACBIOBRIDE MG-10P, manufactured by Nikko Co., Ltd
< other ingredients >
Dextran 40: a product name of "dextran 40", manufactured by Nippon Kogyo Co., Ltd., and having a number average molecular weight of 31000 to 45000
(evaluation)
The cosmetics obtained in examples and comparative examples were evaluated as follows. The evaluation results are set forth in the table.
(1) Speed of separation
100ml of each of the cosmetics obtained in examples and comparative examples was filled in a container made of polyethylene terephthalate (capacity 150ml), sufficiently shaken, and immediately after 10 minutes, the behavior of layer separation was visually observed, and the rate of layer separation was determined according to the following criteria.
[ criterion for determining separation Rate ]
O (good): the separation rate into three layers of an oil layer, an aqueous layer and an aqueous layer is suitable in practical use.
X (bad): the speed of separation into three layers is too fast and separation occurs before the cosmetic is applied. Alternatively, the speed of three-layer separation is slow and the aesthetic quality is poor.
(2) Appearance of the product
After the evaluation in (1), the appearance was visually observed after 3 hours and judged according to the following criteria.
[ criterion for judging appearance ]
O (good): the mixture is divided into three layers, namely an oil layer, a water layer and a water layer. Also, no significant fouling was observed on the wall surface due to the adhesion of oil droplets.
X (bad): three layers were not divided. And/or, oil droplets were clearly adhered to the wall surface and fouling was observed.
(3) Feeling of use (greasy)
Each of the cosmetics obtained in examples and comparative examples was sufficiently shaken and applied to the inner side of the upper arm, and the stickiness immediately after application was judged according to the following criteria.
[ criterion for determining feeling of use (stickiness) ]
O (good): the sticky feeling is little or no sticky feeling, and the use feeling is not problematic in actual use.
X (bad): obviously feels sticky and is uncomfortable in actual use.
The cosmetic preparation (example) of the present invention was suitable in practical use in terms of separation speed, was visually recognized to be separated into three layers, namely, an oil layer, a water layer and a water layer after separation, and was excellent in aesthetic quality because no significant stain was observed due to adhesion of oil droplets on the wall surface. In addition, the feeling of use is also excellent. On the other hand, in any of the case where dextran having a number average molecular weight of less than 5 ten thousand was used instead of the component (a) (comparative example 1), the case where polyethylene glycol having a number average molecular weight of less than 4000 was used instead of the component (B) (comparative example 2), the case where the content ratio of the component (a) was low (comparative example 3), the case where the content ratio of the component (B) was low (comparative example 5), and the case where the component (D) was not blended (comparative example 9), the speed of separation into three layers was slow, and the three layers of an oil layer, an aqueous layer, and an aqueous layer could not be visually confirmed even after 3 hours.
In both cases, the case where the content of the component (a) was high (comparative example 4) and the case where the content of the component (B) was high (comparative example 6), stickiness was clearly felt and the feeling in use was evaluated to be poor.
In the case where the component (C) was not added (comparative example 7), separation into three layers, i.e., an oil layer, a water layer, and a water layer, was visually observed after 3 hours, but the separation rate was slow, and oil droplets were clearly adhered to the wall surface. When the content ratio of the component (C) is high (comparative example 8), the separation rate is too high, and separation may occur before the cosmetic is applied.
Description of the symbols
X cosmetic of the invention
1 oil layer
2 aqueous layer
3 aqueous layer
4 container
Claims (3)
1. A cosmetic composition comprising a component (A), a component (B), a component (C), a component (D), a component (E), and a component (F), wherein the content of the component (A) is 2.0 to 10.0% by mass, the content of the component (B) is 2.0 to 10.0% by mass, and the content of the component (C) is 0.05 to 1.4% by mass, based on the total amount of the cosmetic composition excluding the component (F),
component (A): dextran with a number average molecular weight of 5 to 30 ten thousand;
component (B): polyethylene glycol having a number average molecular weight of 4000 to 3 ten thousand;
component (C): an electrolyte;
component (D): an ionic surfactant;
component (E): water;
component (F): an oily component.
2. The cosmetic according to claim 1, further comprising the following component (G),
component (G): at least one polyol selected from the group consisting of polyoxyalkylene alkyl glucoside, propylene glycol, dipropylene glycol, and polyethylene glycol having a number average molecular weight of 2000 or less.
3. The cosmetic according to claim 1 or 2, which is substantially free of a nonionic surfactant.
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PCT/JP2019/034344 WO2020066471A1 (en) | 2018-09-28 | 2019-09-02 | Cosmetic |
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