Gel-type cleanser and gel-type composition

Abstract

To provide a gel-type cleanser that provides an enjoyable change in physical properties of the gel as it easily breaks down and turns into a viscous liquid due to the external forces generated when applied to the skin, can be spread without straining the skin, by turning into a viscous liquid, foams easily, has excellent usability in terms of foam quality, rinsing ability, and moist feeling after washing, and has excellent stability over time in a wide range of temperatures from low to high.SOLUTION: Provided is a gel-type cleanser containing a water-soluble polymer as a gel base, and a cleaning agent, the water-soluble polymer containing at least one selected from the group consisting of mannan, carrageenan, gellan gum, agar, Sphingomonas culture extract, and welan gum, and containing cyclic saccharides.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a gel-like cleansing agent containing a water-soluble polymer as a gel base and a cleaning agent. The present invention also relates to a gel-like composition containing a water-soluble polymer as a gel base. [Background technology]

[0002] In gel-type cleansing agents, water-soluble polymers are used as gel bases. As gel bases of this kind, for example, konjac mannan and carrageenan are used in semi-solid cleansing agents (see Patent Document 1). Also, for example, carrageenan and / or mannan, as well as thickening polysaccharides capable of forming gels with a melting point of 80° C. or higher alone, are used in gel-type compositions for external use (see Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-43147 A [Patent Document 2] JP 2002-87993 A Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, it is said that the weakness of the physical properties of semi-solid cleansing agents has been overcome. In Patent Document 2, it is said that the gel composition for external use is strong and has no risk of crumbling or deforming on the skin. In Patent Documents 1 and 2, the gel does not easily crumble and turn into a viscous liquid due to external forces generated when applied to the skin, and it is difficult to say that the change in physical properties is enjoyable. In addition, the stability over time in a wide range from low to high temperatures has not been studied, and it is difficult to say that the temperature stability over time is sufficient.

[0005] In view of the above circumstances, the present invention aims to provide a gel-type cleanser that can be enjoyed by a change in physical properties, that is, the gel easily breaks down and changes into a viscous liquid due to an external force generated when applied to the skin, and that can be spread without burden on the skin by changing into a viscous liquid, and that foams easily, has excellent usability such as foam quality, rinsing ability, and moist feeling after washing, and also has excellent stability over time in a wide range of temperatures from low to high.Another object of the present invention is to provide a gel-type composition that can be enjoyed by a change in physical properties, that is, the gel easily breaks down and changes into a viscous liquid due to an external force generated when applied to the skin, and that can be spread without burden on the skin by changing into a viscous liquid, and that has excellent usability such as moist feeling, and also has excellent stability over time in a wide range of temperatures from low to high. [Means for solving the problem]

[0006] The characteristic configuration of the gel-type cleanser according to the present invention for solving the above problems is as follows: A gel-type cleanser containing a water-soluble polymer as a gel base and a cleanser, The water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, agar, Sphingomonas culture extract, and Welan gum; It contains cyclic sugars.

[0007] The gel-type cleanser of this configuration uses the above-mentioned specific type of water-soluble polymer as the gel base and contains cyclic sugars, so that the gel easily breaks down due to external forces generated when applied to the skin and transforms into a viscous liquid, which changes its physical properties.By transforming into a viscous liquid, the gel can be spread without putting any strain on the skin, foams easily, and has an excellent feel when used, such as excellent foam quality, rinsing ability, and a moist feeling after washing, and also has excellent stability over time over a wide range of temperatures, from low to high.

[0008] In the gel-type cleansing agent according to the present invention, The cyclic sugar is preferably at least one selected from the group consisting of at least one sugar selected from monosaccharides to pentasaccharides, modified sugars in which monosaccharides are modified with sugar alcohols, starch hydrolysates, and hydrogenated starch hydrolysates.

[0009] According to the gel-type cleansing material of the present invention, by selecting the above-mentioned specific types of cyclic saccharides, it is possible to further improve the stability over time over a wide range of temperatures from low to high.

[0010] In the gel-type cleansing agent according to the present invention, The mannan is glucomannan, The carrageenan is iota carrageenan, The gellan gum is preferably a high acyl type gellan gum.

[0011] According to the gel-type cleanser of the present invention, by selecting the specific types of mannan, carrageenan, and gellan gum as described above, the external force generated when the gel is applied to the skin causes the gel to break down more easily and transform into a viscous liquid, which changes its physical properties.By transforming into a viscous liquid more easily, the gel can be spread more easily without putting strain on the skin, foams more easily, and provides an excellent feel when used, such as better foam quality, easier rinsing, and a more moist feeling after washing, and also has excellent stability over time over a wide range of temperatures from low to high.

[0012] In the gel-type cleansing agent according to the present invention, the cyclic saccharide is at least one selected from the group consisting of at least one of monosaccharide to pentasaccharide, modified saccharide obtained by modifying a monosaccharide with a sugar alcohol, a starch hydrolysate, and a hydrogenated product of a starch hydrolysate; The mannan is glucomannan, The carrageenan is iota carrageenan, The gellan gum is preferably a high acyl type gellan gum.

[0013] With this gel-type cleanser, by selecting the specific types of cyclic saccharides as described above, and further selecting the specific types of mannan, carrageenan, and gellan gum as described above, the external force generated when applied to the skin causes the gel to break down more easily and transform into a viscous liquid, which changes its physical properties.By transforming into a viscous liquid more easily, the gel can be spread more easily without putting strain on the skin, foams more easily, and provides a better feel when used, such as better foam quality, better rinsing ability, and a more moist feeling after washing, and also provides better stability over time over a wide range of temperatures from low to high.

[0014] In the gel-type cleansing agent according to the present invention, It is preferable that the natural origin index, calculated including water according to the calculation method set forth in the "Guidelines for labeling natural and organic indexes for cosmetics based on ISO 16128," is 80% or more.

[0015] According to the gel-type cleansing agent of the present composition, the natural origin index is 80% or more, making it highly environmentally friendly.

[0016] Another characteristic feature of the gel composition according to the present invention for solving the above problems is: A gel composition containing a water-soluble polymer as a gel base, The water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, agar, Sphingomonas culture extract, and Welan gum; It contains cyclic sugars.

[0017] According to the gel composition of the present invention, the specific type of water-soluble polymer is used as the gel base and contains cyclic saccharides, so that the gel easily breaks down and transforms into a viscous liquid due to the external force generated when applied to the skin. The transformation into a viscous liquid allows the gel to be spread without putting any strain on the skin, provides an excellent feel when used, such as a moist feeling, and has excellent stability over time over a wide range of temperatures from low to high.

[0018] In the gel composition according to the present invention, It is preferable that the natural origin index, calculated including water according to the calculation method set forth in the "Guidelines for labeling natural and organic indexes for cosmetics based on ISO 16128," is 80% or more.

[0019] According to the gel composition of the present invention, the natural origin index is 80% or more, and therefore it is excellent in consideration of the natural environment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The following describes embodiments of the gel cleanser and gel composition of the present invention. However, the present invention is not intended to be limited to the configurations described in the embodiments described below. In this specification, when a numerical range is indicated by "~", this means that the numerical range includes the numerical values ​​between "~" as upper and lower limit values, and each upper limit value and each lower limit value may be appropriately combined to form a numerical range.

[0021] [Gel-type cleanser] The gel-type cleanser of the present embodiment is a gel-type cleanser containing a water-soluble polymer as a gel base and a cleansing agent. The gel-type cleanser further contains cyclic saccharides.

[0022] <Water-soluble polymer> The water-soluble polymer functions as a gel base for the gel-type cleanser and provides the gel-type cleanser with gel properties. The water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, agar, Sphingomonas culture extract, and welan gum.

[0023] (Mannan) Mannan is a polysaccharide whose main component is mannose. Examples of mannan include glucomannan and galactomannan. Glucomannan is a polysaccharide formed by β1-4 bonding of D-glucose and D-mannose in a ratio of approximately 2:3. Examples of glucomannan include glucomannan extracted from konnyaku root. Galactomannan is a polysaccharide having a structure consisting of a main chain in which D-mannose is bonded by β1-4 bonding and a side chain in which D-galactose is bonded by α1-6 bonding. Examples of galactomannan include locust bean gum (mannose:galactose ratio is approximately 4:1) and guar gum (mannose:galactose ratio is approximately 2:1). Of these, glucomannan is preferred as the mannan. By selecting glucomannan as the mannan, the gel can be more easily broken down by external forces generated during application on the skin, and can be easily changed into a viscous liquid, resulting in a more moisturized wash. The mannan polysaccharides may be used alone or as a mixture of two or more kinds.

[0024] (Carrageenan) Carrageenan is a polysaccharide whose constituent sugars are anhydrogalactose and sulfate ester of galactose, and is extracted from red algae. Carrageenan is classified into kappa (κ) carrageenan, iota (ι) carrageenan, and lambda (λ) carrageenan according to the sulfate ester content. Of these, iota carrageenan (iota-type carrageenan) is preferred as carrageenan. By selecting iota carrageenan as carrageenan, the gel can be more easily broken down by the external force generated when applied to the skin, and can be easily changed into a viscous liquid. In addition, syneresis due to freezing and thawing can be more effectively suppressed. Carrageenan can be used as the above polysaccharides alone, or as a mixture of two or more kinds.

[0025] (Gellan Gum) Gellan gum is a polysaccharide that is composed of four structural units linearly bonded together: a structural unit formed by α1-3 bonds of glucose (structural unit a), a structural unit formed by α1-4 bonds of glucuronic acid (structural unit b), a structural unit formed by α1-4 bonds of glucose (structural unit c), and a structural unit formed by α1-4 bonds of rhamnose (structural unit d), and an acetyl group and a glyceryl group are bonded to the glucose of structural unit a. This polysaccharide is obtained as a heteropolysaccharide produced outside the cells of the microorganism Pseudomonas elodea, and is called "high acyl group-containing gellan gum" (high acyl type gellan gum) because of its high acyl group content, and is also called native gellan gum. On the other hand, polysaccharides obtained by removing the acetyl group and the glyceryl group bonded to the glucose of the structural unit a in high acyl gellan gum do not contain acyl groups or have a relatively lower content of acyl groups than high acyl gellan gum, and are called "deacylated gellan gum". In this embodiment, gellan gum includes both high acyl gellan gum and deacylated gellan gum. Among these, high acyl gellan gum is preferable as gellan gum. By selecting high acyl gellan gum as gellan gum, the gel is more easily broken down by the external force generated when applied to the skin, and is more easily changed into a viscous liquid. In addition, deterioration of quality at high temperatures can be further suppressed. The above polysaccharides can be used alone as gellan gum, but it can also be used as a mixture of two or more kinds.

[0026] (Kanten) Kanten is a polysaccharide formed by β1-4 bonds between galactose and 3,6-anhydrogalactose, and contains agarose with no ionic groups and agaropectin with ionic groups such as sulfate groups added to agarose. This polysaccharide is extracted from seaweed such as Agarica alba and Gracilaria verum. Kanten can be used alone from polysaccharides of different types of seaweed, but can also be used as a mixture of two or more types. Kanten is preferably of a fast-dissolving type that has a low dissolving temperature and can dissolve at 80°C or higher. Kanten that can dissolve at 80°C or higher makes it easier for the gel to break down and turn into a viscous liquid due to external forces generated when applied to the skin. In addition, the low dissolving temperature makes it easier to prepare a gel-type cleanser.

[0027] (Sphingomonas culture extract) Sphingomonas culture extract is a polysaccharide consisting of a fermentation product produced by the ATCC 53159 strain of the genus Sphingomonas. This polysaccharide is a polysaccharide consisting of a main chain having a unit structure in which four sugars, glucose, glucuronic acid, glucose, and rhamnose, are repeated, and two rhamnoses are bonded to the above unit structure as side chains. This polysaccharide is also called "deutan gum." Sphingomonas culture extract can be used as a single polysaccharide having different numbers of unit structures, or as a mixture of two or more kinds.

[0028] (Welangham) Welan gum is a polysaccharide that has a main chain with a unit structure in which four sugars, glucose, glucuronic acid, glucose, and rhamnose, are repeated, and one mannose or rhamnose is bonded to the unit structure as a side chain. This polysaccharide is obtained from the culture medium of Sphingomonas sp. Welan gum can be used alone or as a mixture of two or more polysaccharides with different numbers of unit structures and types of side chains.

[0029] (Water-soluble polymer content) The total content of the water-soluble polymer in the gel-type cleanser is preferably 1 to 2.5% by mass. The mass ratio (b / a) of carrageenan (mass b) to mannan (mass a) is preferably 0.20 to 3.20. The mass ratio of at least one (mass c) selected from the group consisting of gellan gum, agar, Sphingomonas culture extract, and Welan gum to mannan (mass a) is preferably 0.1 to 1.7. By setting the content of the water-soluble polymer within the above appropriate range, the temperature stability can be further improved. In addition, the feeling of use can be further improved.

[0030] <Cyclic sugars> The cyclic saccharide contributes to the temperature stability of the gel cleanser containing the water-soluble polymer. The cyclic saccharide is at least one selected from the group consisting of at least one of monosaccharide to pentasaccharide, modified saccharide obtained by modifying a monosaccharide with a sugar alcohol, starch hydrolysate, and hydrogenated starch hydrolysate. The number of rings in the cyclic structure of the saccharide may be five (five-membered ring), six (six-membered ring), etc.

[0031] (at least one sugar from monosaccharide to pentasaccharide) Examples of monosaccharides include six-membered ring monosaccharides such as glucose (grape sugar) and galactose, and five-membered ring monosaccharides such as fructose (fruit sugar). Examples of disaccharides include sucrose (cane sugar), which is formed by bonding a six-membered ring monosaccharide and a five-membered ring monosaccharide, maltose (malt sugar), which is formed by bonding two six-membered ring monosaccharides, lactose, trehalose, and the like. Examples of trisaccharides include maltotriose and glycosyltrehalose, which are formed by linking three six-membered ring monosaccharides. An example of a tetrasaccharide is maltosyltrehalose, which is formed by linking four six-membered ring monosaccharides. An example of a pentasaccharide is maltotriosyltrehalose, which is formed by linking five six-membered ring monosaccharides.

[0032] (Modified sugars in which monosaccharides are modified with sugar alcohols) Examples of modified sugars in which a monosaccharide is modified with a sugar alcohol include maltitol, isomalt, lactitol, and the like, which are obtained by modifying a six-membered ring monosaccharide with a sugar alcohol.

[0033] (Starch Hydrolysate) Starch hydrolysates are sugars obtained by hydrolyzing starch. Examples of starch hydrolysates include starch syrup with a polymerization degree of 3 to 6 and maltodextrin with a polymerization degree of 6 to 10.

[0034] (Hydrogenated starch hydrolysate) Hydrogenated starch hydrolysates (hydrogenated starch hydrolysates) are sugars obtained by adding hydrogen atoms to the above-mentioned starch hydrolysates. Examples of hydrogenated starch hydrolysates include mixtures of hydrogenated starch hydrolysates, glycosyltrehalose, and water (hydrogenated starch hydrolysates / glycosyltrehalose / water).

[0035] The cyclic saccharides may be used alone or in the form of a mixture of two or more kinds.

[0036] (Content of cyclic sugars) The content of the cyclic saccharide in the gel cleanser is preferably 5 to 25% by mass (solid content equivalent). By setting the content of the cyclic saccharide in the above appropriate range, the temperature stability can be further improved. In addition, the feeling of use can be further improved.

[0037] <Cleaning agent> The cleaning agent may be a surfactant, and any of anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants may be used as the surfactant.

[0038] Examples of anionic surfactants include higher alkyl sulfates (sodium lauryl sulfate, potassium lauryl sulfate, etc.), alkyl ether sulfates (POE (polyoxyethylene) triethanolamine lauryl sulfate, POE sodium lauryl sulfate, etc.), N-acylsarcosinates (sodium lauroyl sarcosinate, etc.), higher fatty acid amide sulfonates (sodium N-myristoyl-N-methyl taurate, sodium coconut oil fatty acid methyl taurate, sodium lauroyl methyl taurate, etc.), phosphates (sodium POE oleyl ether phosphate, POE stearyl ether phosphate, etc.), sulfosuccinates (sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide POE sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.), alkyl benzene sulfonates (sodium linear dodecyl benzene sulfonate, sodium linear dodecyl benzene sulfonate, sodium lauroyl methyl taurate, etc.), and alkyl benzene sulfonates (sodium linear dodecyl benzene sulfonate, sodium linear dodecyl benzene sulfonate, sodium lauroyl methyl taurate, sodium lauroyl methyl taurate, etc.). triethanolamine decylbenzenesulfonate, sodium linear dodecylbenzenesulfonate, etc.), higher fatty acid ester sulfate salts (hydrogenated coconut oil fatty acid glycerin sodium sulfate, etc.), N-acyl glutamate salts (monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.), acyl glycine salts (cocoyl glycine salts, lauroyl glycine salts, etc.), sulfated oils (roth oil, etc.), acylalanine salts (lauroyl methyl alanine salts, etc.), POE alkyl ether carboxylic acids, POE alkyl allyl ether carboxylate salts, α-olefin sulfonates, higher fatty acid ester sulfonates, secondary alcohol sulfate salts, higher fatty acid alkylolamide sulfate salts, sodium lauroyl monoethanolamide succinate, ditriethanolamine N-palmitoyl aspartate, sodium caseinate, etc.

[0039] Examples of cationic surfactants include alkyltrimethylammonium salts (stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, etc.), alkylpyridinium salts (cetylpyridinium chloride, etc.), distearyldimethylammonium chloride, dialkyldimethylammonium salts, poly(N,N'-dimethyl-3,5-methylenepiperidinium) chloride, alkyl quaternary ammonium salts, alkyldimethylbenzylammonium salts, alkylisoquinolinium salts, dialkylmorphonium salts, POE alkylamines, alkylamine salts, polyamine fatty acid derivatives, amyl alcohol fatty acid derivatives, benzalkonium chloride, and benzethonium chloride.

[0040] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, etc.), betaine-based surfactants (alkylamide betaines such as cocamidopropyl betaine, lauramidopropyl betaine, isostearamidopropyl betaine, etc., alkyl betaines such as lauryl betaine and cocobetaine, alkyl sulfobetaines, etc.), sodium cocoamphoacetate (Na), lauryl hydroxysultaine, lauramidopropyl hydroxysultaine, etc.

[0041] Examples of the nonionic surfactant include lipophilic nonionic surfactants and hydrophilic nonionic surfactants. Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters (sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexyl acid, diglycerol sorbitan tetra-2-ethylhexyl acid, etc.), glycerin fatty acid esters (glycerin monocottonseed oil fatty acid, glycerin monoerucate, glycerin sesquioleate, glycerin monostearate, α,α'-glycerin pyroglutamate oleate, glycerin monostearate malate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate, etc.), and hydrogenated castor oil derivatives. Examples of hydrophilic nonionic surfactants include POE sorbitan fatty acid esters (POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monooleate, POE sorbitan tetraoleate, etc.), POE sorbit fatty acid esters (POE sorbitan monolaurate, POE sorbitan monooleate, POE sorbitan pentaoleate, POE sorbit monostearate, etc.), POE glycerin fatty acid esters (POE glycerin monostearate, POE glycerin monoisostearate, POE glycerin triisostearate, etc.), POE fatty acid esters (POE distearate, POE monodioleate, ethylene glycol distearate, etc.), POE alkyl ethers (POE lauryl ether, POE oleyl ether, POE stearyl ether, POE behenyl ether, POE-2-octyldodecyl ether, POE cholestanol ether, etc.), Pluronics (registered trademark), POE·POP (polyoxypropylene) alkyl ethers (POE·POP cetyl ether, POE·POP 2-decyltetradecyl ether, POE POE·POP monobutyl ether, POE·POP hydrogenated lanolin, POE·POP glycerin ether, etc.), tetraPOE·tetraPOP ethylenediamine condensates (Tetronic, etc.), POE castor oil hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE hydrogenated castor oil maleic acid, etc.), POE beeswax·lanolin derivatives (POE sorbitol beeswax, etc.), alkanolamides ( Coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, cocamide methyl monoethanolamide, etc.), POE propylene glycol fatty acid ester, POE alkylamine, POE fatty acid amide, diethylene glycol laurate, sucrose fatty acid ester, alkyl ethoxydimethylamine oxide, trioleyl phosphate, polyglycerin alkyl ethers such as polyglyceryl-4 lauryl ether, octyl glucoside, nonyl glucoside, decyl glucoside, dodecyl glucoside, lauryl glucoside,Examples of alkyl glucoside include myristyl glucoside, palmityl glucoside, alkyl glucoside derived from coconut oil (coconut oil alkyl glucoside), and alkyl glucoside such as caprylyl glucoside.

[0042] Among these, the cleaning agent is preferably a nonionic surfactant or an amphoteric surfactant. As the nonionic surfactant, lauryl glucoside, coconut oil-derived alkyl glucoside (coconut oil alkyl glucoside), and polyglyceryl-4 lauryl ether are preferred, and as the amphoteric surfactant, alkyl amido betaines such as cocamidopropyl betaine, lauramidopropyl betaine, and isostearamidopropyl betaine, and alkyl betaines such as lauryl betaine and coco betaine are preferred. By selecting an appropriate type of cleaning agent, it is possible to suppress adverse effects on the crosslinking of the gel. From the viewpoint of further suppressing adverse effects on the crosslinking of the gel, the cleaning agent is preferably an amphoteric surfactant. The above compounds can be used alone as the cleaning agent, but can also be used as a mixture of two or more kinds.

[0043] The content of the detergent in the gel-like detergent is preferably 1 to 15% by mass (solid content equivalent). By selecting the above-mentioned appropriate range as the content of the detergent, it is possible to improve the cleaning performance without adversely affecting the crosslinking of the gel. In addition, it is possible to improve the feeling of use.

[0044] <Water> The water content in the gel-type cleanser is preferably 60 to 85% by mass. By setting the water content within the above range, the gelation degree of the gel-type cleanser can be made appropriate, and the temperature stability can be further improved. In addition, the feeling of use can be further improved.

[0045] <Other ingredients> In addition to the above-mentioned water-soluble polymers, cyclic sugars, and cleaning agents, the gel-type cleanser may contain any conventionally known additives, such as organic solvents such as phenoxyethanol, pentylene glycol, and butylene glycol, water-soluble polymers other than the above-mentioned water-soluble polymers, pigments such as β-carotene, astaxanthin, and lutein, sphingophospholipids such as ceramide, flavonoids such as flavones, flavonols, isoflavones, and anthocyans, polyphenols such as ferulic acid, oil-based vitamins, amino acids, plant extracts, essential oils, pH adjusters, and preservatives.

[0046] <Natural index of gel cleansing products> The gel-type cleanser has a natural origin index (hereinafter simply referred to as the "natural origin index") calculated including water according to the calculation method set forth in the "Guidelines for labeling natural and organic indices for cosmetics based on ISO 16128" of 80% or more, and preferably 100%. A natural origin index of 80% or more for the gel-type cleanser makes it highly environmentally friendly. Specifically, the natural origin index is a numerical value calculated based on all ingredients contained in the gel-type cleanser. To achieve a natural origin index of 80% or more for a gel-type cleanser, the types of ingredients other than water (the natural origin index is 100%) and the content of all ingredients in the gel-type cleanser should be set so that the natural origin index is 80% or more.

[0047] <Preparation of gel-type cleanser> The gel-like cleanser can be obtained by mixing the above-mentioned water-soluble polymer, cyclic saccharide, cleaning agent, water, and any other additives, stirring and dissolving all the components while heating using a conventionally known stirring device, and then stirring while cooling.

[0048] This gel-type cleanser uses the specific type of water-soluble polymer as a gel base and contains cyclic sugars, which allows the gel to easily break down and transform into a viscous liquid due to the external force generated when applied to the skin.As the gel transforms into a viscous liquid, it can be spread without putting any strain on the skin, foams easily, and has an excellent feel when used, such as excellent foam quality, rinsing ability, and a moist feeling after washing, and also has excellent stability over time over a wide range of temperatures, from low to high.

[0049] [Gel composition] The gel composition of this embodiment is a gel composition containing a water-soluble polymer as a gel base, and the water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, agar, Sphingomonas culture extract, and welan gum, and contains cyclic sugars.

[0050] <Water-soluble polymer> The gel composition contains a water-soluble polymer as a gel base, which is the same as the water-soluble polymer used in the gel cleanser described above. Specifically, the water-soluble polymer is contained as a gel base for imparting gel properties to the gel composition. The composition of the water-soluble polymer in the gel composition and the content in the gel composition are the same as the composition of the water-soluble polymer in the gel cleanser described above and the content in the gel cleanser, so detailed description will be omitted.

[0051] <Cyclic sugars> The gel composition contains the same cyclic saccharides as those used in the gel cleanser described above. The composition of the cyclic saccharides in the gel composition and the content in the gel composition are the same as those in the gel cleanser described above, so detailed description is omitted.

[0052] <Water> The water content in the gel composition is preferably 60 to 85% by mass. By setting the water content within the above range, the gel composition can be gelled to an appropriate degree, and the temperature stability can be further improved. In addition, the feeling of use can be further improved.

[0053] <Other ingredients> In addition to the water-soluble polymers and cyclic sugars, the gel composition may contain any of the conventionally known additives, such as the above-mentioned detergents, organic solvents such as phenoxyethanol, pentylene glycol, and butylene glycol, water-soluble polymers other than the above-mentioned water-soluble polymers, pigments such as β-carotene, astaxanthin, and lutein, sphingophospholipids such as ceramide, flavonoids such as flavones, flavonols, isoflavones, and anthocyans, polyphenols such as ferulic acid, oil-based vitamins, amino acids, plant extracts, essential oils, pH adjusters, and preservatives.

[0054] <Natural origin index of gel composition> The gel composition has a natural origin index of 80% or more, preferably 100%. When the gel composition has a natural origin index of 80% or more, it is excellent in consideration of the natural environment. As described above, in the present invention, the natural origin index of the gel composition is a value calculated including water. Specifically, the natural origin index is a value calculated based on all components contained in the gel composition. In order to make the natural origin index of the gel composition 80% or more, the types of components other than water (the natural origin index is 100%) in the gel composition and the contents of all components are set so that the natural origin index is 80% or more.

[0055] <Preparation of gel composition> The gel composition can be obtained by mixing the above-mentioned water-soluble polymer, cyclic saccharide, water, and any additives, stirring and dissolving all the components with a conventional stirring device while heating, and then stirring while cooling.

[0056] <Uses of the gel composition> The gel composition can be used as a cosmetic agent (for example, a cosmetic gel, a facial pack, etc.).

[0057] According to this gel composition, the specific type of water-soluble polymer is used as the gel base and contains cyclic saccharides, so that the gel easily breaks down and turns into a viscous liquid due to the external force generated when applied to the skin, and this changes the physical properties. By turning into a viscous liquid, the gel can be spread without putting any strain on the skin, has an excellent feel when used, such as a moist feeling, and has excellent stability over time over a wide range of temperatures from low to high. EXAMPLES

[0058] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0059] [Examples 1 to 32, Comparative Examples 1 to 13] Gel-type cleansers of the present invention (Examples 1 to 32) were prepared according to the formulations in Tables 1 to 7 and 9, and their temperature stability (50°C x 1 month, 5°C x 1 month, freeze-thaw) and usability (changes in physical properties (ease of changing from gel to viscous liquid)), foaming ability, foam quality, rinsing ability, and moisturizing feeling after washing) were evaluated. For comparison, gel-type cleansers outside the scope of the present invention (Comparative Examples 1 to 13) were prepared according to the formulations in Tables 1, 2, 5, and 8, and similar evaluations were carried out. Tables 1 to 9 show the natural origin index (rounded to one decimal place) of the gel-type cleansers of Examples 1 to 32 and Comparative Examples 1 to 13.

[0060] [Table 1]

[0061] [Table 2]

[0062] [Table 3]

[0063] [Table 4]

[0064] [Table 5]

[0065] [Table 6]

[0066] [Table 7]

[0067] [Table 8]

[0068] [Table 9]

[0069] [evaluation] The gel-type cleansing agents of Examples 1 to 32 and Comparative Examples 1 to 13 were evaluated for temperature stability (50°C x 1 month, 5°C x 1 month, freeze-thaw) and usability (changes in physical properties (ease of changing from gel to viscous liquid), foaming ability, foam quality, rinsing ability, and moisturizing feeling after washing) according to the following evaluation method.

[0070] <Temperature stability> The gel-type cleansing materials of Examples 1 to 32 and Comparative Examples 1 to 13 were stored under temperature conditions of 50°C and 5°C, respectively, and after one month, the temperature stability after one month storage at 50°C (50°C x 1 month) and one month storage at 5°C (5°C x 1 month) was evaluated according to the following criteria. The gel-type cleansing materials of Examples 1 to 32 and Comparative Examples 1 to 13 were also frozen and left at room temperature to be thawed (freeze-thaw (single)), and their storage stability was evaluated in the same manner. Note that the storage stability after freezing and thawing (single) is the storage stability evaluated when thawed after the first (initial) freezing, and is not the storage stability when thawed after being frozen twice or more times. ·Judgment criteria A: No changes in physical properties such as syneresis or a decrease in viscosity were observed (Excellent) B: Although slight syneresis is observed, no change in physical properties such as viscosity is observed (good) C: Syneresis and changes in physical properties such as decreased viscosity are observed (bad)

[0071] <Feeling of use> Ten subjects were asked to use the gel-type cleansing agents of Examples 1 to 32 and Comparative Examples 1 to 13 in a blind manner so that they could not tell which gel-type cleansing agent they were using. Specifically, the evaluation was performed according to the following evaluation method and criteria.

[0072] (Changes in physical properties (ease of changing from gel to viscous liquid)) The gel cleansers of Examples 1 to 32 and Comparative Examples 1 to 13 were used, and 4 g of each gel cleanser was placed on the palm of the hand, and the change in physical properties of the gel cleansers when spread on the palm (ease of changing from a gel to a viscous liquid) was evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 9. ·Judgment criteria A: The gel immediately changes to a viscous liquid, and the change in physical properties is noticeable (Excellent) B: The material changes from gel to viscous liquid, and changes in physical properties are observed (good). C: The gel changed to a viscous liquid, but gel remained in the viscous liquid, and the change in physical properties was poor (poor).

[0073] (foaming) In the evaluation of the above-mentioned changes in physical properties, each gel-type cleanser was spread on the palm of the hand, and water was added to the gel-type cleanser. The ease of foaming (amount of foam) when foamed was evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 9. ·Judgment criteria A: Very high foam volume (excellent) B: Large amount (good) C: Low foam volume (poor)

[0074] (foam quality) In the evaluation of foamability, the foam quality (creaminess) upon foaming was evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 9. ·Judgment criteria A: Very creamy foam quality (excellent) B: Creamy foam quality (good) C: The foam quality is not creamy (bad)

[0075] (Rinseability) After the foam quality evaluation was performed, the obtained foam was used to wash the face, and then the ease of rinsing with running water was evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 9. ·Judgment criteria A: Very easy to rinse (Excellent) B: Easy to rinse (good) C: Slime remains for a long time and is difficult to rinse (bad)

[0076] (Moisturizing feeling after washing) After rinsing in the above-mentioned evaluation of rinsing ability, the moisturizing feeling of the skin after drying with a towel (after drying by pressing a towel against the skin) was evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 9. ·Judgment criteria A: Very moist (excellent) B: Moist (good) C: Not moist (bad)

[0077] As shown in Examples 1 to 3 in Table 1, by using mannan, carrageenan, and gellan gum as water-soluble polymers and maltitol (disaccharide) as cyclic saccharides, the evaluation of temperature stability at 50°C and 5°C was "A" or "B", and the evaluation of usability was "A" or "B", indicating excellent temperature stability and usability. Furthermore, as the content of carrageenan and cyclic saccharides increases, the temperature stability is "A" or "B" even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), indicating excellent temperature stability. In contrast, as shown in Comparative Example 1, when saccharides are not used, it was shown that the temperature stability at 50°C and freezing and thawing was poor, and the moisturizing feeling after washing was also poor in the usability.

[0078] Table 2 shows the results of Example 3 in Table 1 for reference. As shown in Example 4 in Table 2, by using mannan, carrageenan, and gellan gum as the water-soluble polymer and trehalose as the cyclic saccharide, the evaluation of temperature stability at 50°C and 5°C was "A", and the evaluation of usability was "A" or "B", as in the case of using maltitol as the cyclic saccharide (Example 3), which showed excellent temperature stability and usability. In addition, even under low-temperature conditions that are more severe than 5°C, such as freezing and thawing (one time), the temperature stability was "A", showing excellent temperature stability. In contrast, when mannan, carrageenan, and gellan gum were used as the water-soluble polymer, while sugar alcohols, glycerin, and polyglycerin that do not have a cyclic structure were used instead of the cyclic saccharide (Comparative Examples 2 to 4), the temperature stability during freezing and thawing was poor, and those using glycerin and polyglycerin were also poor in stability at 50°C.

[0079] As shown in Examples 5 to 9 in Table 3, when mannan, carrageenan, and gellan gum are used as water-soluble polymers and a cyclic saccharide (maltitol) is used, if the blending amount of each water-soluble polymer is within an appropriate range, the temperature stability at 50°C and 5°C was evaluated as "A" and the usability was evaluated as "A", indicating excellent temperature stability and usability. In addition, even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), the temperature stability was evaluated as "A", indicating excellent temperature stability.

[0080] As shown in Examples 10 to 14 in Table 4, when mannan, carrageenan, and gellan gum are used as water-soluble polymers and a cyclic saccharide (maltitol) is used, if the blending amount of each water-soluble polymer is within an appropriate range, the temperature stability at 50°C and 5°C was evaluated as "A" and the usability was evaluated as "A" or "B," indicating excellent temperature stability and usability. Furthermore, even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), the temperature stability was evaluated as "A," indicating excellent temperature stability.

[0081] As shown in Examples 15 to 17 in Table 5, when mannan, carrageenan, and Sphingomonas culture solution were used as water-soluble polymers and cyclic saccharides (maltitol) were used, the temperature stability was evaluated as "A" at 50°C and 5°C, and the usability was evaluated as "A", as in the case of using mannan, carrageenan, and gellan gum as water-soluble polymers and cyclic saccharides (maltitol), showing excellent temperature stability and usability. In addition, even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), the temperature stability was evaluated as "A", showing excellent temperature stability. In contrast, Comparative Examples 5 to 9, which do not contain mannan and / or carrageenan, showed poor usability at least in terms of physical property change (ease of changing from gel to viscous liquid) and foam quality.

[0082] As shown in Examples 18 to 21 in Table 6, when mannan, carrageenan, and agar were used as water-soluble polymers and a cyclic saccharide (maltitol) was used, the temperature stability was evaluated as "A" at 50°C and 5°C, and the usability was evaluated as "A", indicating excellent temperature stability and usability, as in the case of using mannan, carrageenan, and gellan gum as water-soluble polymers and a cyclic saccharide (maltitol). In addition, even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), the temperature stability was evaluated as "A", indicating excellent temperature stability.

[0083] Comparison of Example 22 and Example 23 in Table 7 shows that the temperature stability and usability are superior when glucomannan is used as mannan than when galactomannan is used. Comparison of Example 22 and Example 24 shows that the temperature stability and usability are superior when high acylated gellan gum is used as gellan gum than when deacylated gellan gum is used. Comparison of Example 22 and Example 25 shows that the temperature stability and usability are superior when iota carrageenan is used as carrageenan than when kappa carrageenan is used. As shown in Examples 26 to 27, even when Sphingomonas culture solution or Welan gum is used instead of gellan gum, it is shown that the temperature stability and usability are superior.

[0084] As shown in Comparative Examples 10 to 13 in Table 8, when at least one of mannan and carrageenan was not used as the water-soluble polymer, or when mannan and carrageenan were used but gellan gum, agar, Sphingomonas culture extract, and welan gum were not used, the temperature stability during freezing and thawing, etc., and the feel when used were inferior.

[0085] As shown in Examples 28 to 32 in Table 9, when mannan, carrageenan, and gellan gum were used as water-soluble polymers and a cyclic saccharide (maltitol) was used, and even when a detergent other than lauramidopropyl betaine was blended as a detergent, the temperature stability was evaluated as "A" at 50°C and 5°C, and the usability was evaluated as "A", indicating excellent temperature stability and usability. In addition, even under low-temperature conditions that are harsher than 5°C, such as freezing and thawing (one time), the temperature stability was evaluated as "A", indicating excellent temperature stability.

[0086] [Example 33] A pack (Example 33) was prepared as a gel composition of the present invention in the same manner as in Example 1, except that the formulation in Table 10 was followed. Temperature stability (50°C x 1 month, 5°C x 1 month, freeze-thaw) was evaluated in the same manner as in Examples 1 to 32 and Comparative Examples 1 to 13. In addition, the physical property change (ease of changing from gel to viscous liquid), ease of application, rinsing ability, and moisturizing feeling after washing were evaluated as usability. In Table 10, the "mixture of hydrogenated starch hydrolysate (27) / glycosyl trehalose (47) / water (26)" is a mixture of 27% by mass of hydrogenated starch hydrolysate, 47% by mass of glycosyl trehalose, and 26% by mass of water. Table 10 also shows the natural origin index (rounded to the nearest whole number) of the pack of Example 33.

[0087] [Table 10]

[0088] [evaluation] The pack agent of Example 33 was evaluated for temperature stability (50°C x 1 month, 5°C x 1 month, freeze-thaw) according to the above-mentioned evaluation method. The feeling of use was evaluated according to the following evaluation method.

[0089] <Feeling of use> Ten subjects were asked to use the pack preparation of Example 33 in a blind manner so that they could not tell which gel-type cleanser they were using, and the pack preparation was evaluated. Specifically, the pack preparation was evaluated according to the following evaluation method and criteria.

[0090] (Changes in physical properties (ease of changing from gel to viscous liquid)) Using the pack of Example 33, 4 g of the pack was placed on the palm of the hand, and the change in the physical properties of the pack when spread on the palm (ease of changing from a gel to a viscous liquid) was evaluated according to the following evaluation criteria. The results are shown in Table 10. ·Judgment criteria A: The gel immediately changes to a viscous liquid, and the change in physical properties is noticeable (Excellent) B: The material changes from gel to viscous liquid, and changes in physical properties are observed (good). C: The gel changed to a viscous liquid, but gel remained in the viscous liquid, and the change in physical properties was poor (poor).

[0091] (Ease of application) In the evaluation of the above-mentioned changes in physical properties, the pack was spread on the palm of the hand, and the ease of application to the face was evaluated according to the following evaluation criteria. The results are shown in Table 10. ·Judgment criteria A: Very easy to apply (Excellent) B: Easy to apply (good) C: Difficult to apply (poor)

[0092] (Rinseability) In the evaluation of ease of application, the pack was applied to the face, and 3 minutes later, it was washed off with running water, and the ease of rinsing at that time was evaluated according to the following evaluation criteria. The results are shown in Table 10. ·Judgment criteria A: Very easy to rinse (Excellent) B: Easy to rinse (good) C: Slime remains for a long time and is difficult to rinse (bad)

[0093] (Moisturizing feeling after washing) After rinsing in the above evaluation of rinsing ability, the moisturizing feeling of the skin after drying with a towel (after pressing the towel against the skin to dry it) was evaluated according to the following evaluation criteria. The results are shown in Table 10. ·Judgment criteria A: Very moist (excellent) B: Moist (good) C: Not moist (bad)

[0094] As shown in Example 33 in Table 10, by using mannan, carrageenan, and gellan gum as water-soluble polymers and a mixture of hydrogenated starch hydrolysate / glycosyl trehalose / water as cyclic sugars, the temperature stability was evaluated as "A" at 50°C, 5°C, and after freezing and thawing (once), and the usability was also evaluated as "A", indicating excellent temperature stability and usability. [Industrial Applicability]

[0095] The gel-type cleansing agent of the present invention can be used as a gel-type cleansing agent that can enjoy a change in physical properties, in which the gel easily breaks down and changes into a viscous liquid due to an external force generated when applied to the skin, and that can be spread without burden on the skin by changing into a viscous liquid, and that has excellent usability such as foam quality, rinsing ability, and moist feeling after washing, and that also has excellent stability over time in a wide range of temperatures from low to high.Furthermore, the gel-type composition of the present invention can enjoy a change in physical properties, in which the gel easily breaks down and changes into a viscous liquid due to an external force generated when applied to the skin, and that can be spread without burden on the skin by changing into a viscous liquid, and that also has excellent usability such as moist feeling, and that also has excellent stability over time in a wide range of temperatures from low to high, and therefore can be suitably used in high temperature regions, cold regions, etc.

Claims

1. A gel-type cleansing agent that contains a water-soluble polymer as a gel base and a cleansing agent and is to be applied to the skin, The water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, Sphingomonas culture extract, and Welan gum; The cleaning agent contains a nonionic surfactant and / or an amphoteric surfactant, The present invention comprises at least one cyclic saccharide selected from the group consisting of trehalose, maltitol, hydrolyzed hydrogenated starch, and glycosyltrehalose, The content of the water-soluble polymer is 1 to 2.5% by mass, The content of the cyclic saccharide is 5 to 25% by mass (solid content equivalent), The content of the cleaning agent in the gel-like cleaning agent is 1 to 15 mass % (solid content equivalent).

2. The mannan is glucomannan, The carrageenan is iota carrageenan, 2. The gel-type cleansing agent according to claim 1, wherein the gellan gum is a high acyl type gellan gum.

3. A gel composition containing a water-soluble polymer as a gel base and to be applied to the skin, The water-soluble polymer includes at least one selected from the group consisting of mannan, carrageenan, gellan gum, Sphingomonas culture extract, and Welan gum; The present invention comprises at least one cyclic saccharide selected from the group consisting of trehalose, maltitol, hydrolyzed hydrogenated starch, and glycosyltrehalose, The content of the water-soluble polymer is 1 to 2.5% by mass, The gel composition has a cyclic saccharide content of 5 to 25% by mass (solid content equivalent).

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