JP2018016583A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsion cosmetic which has a rich and heavy texture at the time of application and has skin compatibility while melting on the skin, excellent elastic feeling (glutinous skin feeling) and excellent moisture-retaining feeling until the next morning.SOLUTION: There is provided an oil-in-water type emulsion cosmetic which comprises the following components (A) to (E), wherein the content mass ratio [(B)/(C)] of the component (B) to the component (C) is 0.35 or more and 1.0 or less: (A) an acylamino acid salt, (B) a pasty or solid oil agent, (C) a liquid oily agent, (D) a polyalkylene glycol and (E) a polysaccharide.SELECTED DRAWING: None

Description

  The present invention relates to an oil-in-water emulsified cosmetic.

  The texture when using cosmetics is a very important factor in cosmetics because it greatly affects the user's palatability and the actual feeling of the effect. In recent years, when applying cosmetics, it has a thick and heavy texture, but when warmed at body temperature, the cosmetics gradually soften on the skin, expressing a melting feel, and being familiar to the skin Cosmetics with an excellent image of penetration of cosmetics into the skin have been favored. As cosmetics having such a thick and heavy texture, emulsified cosmetics containing solid oils such as hydrocarbons and waxes have been proposed (see Patent Documents 1 and 2).

  However, since these emulsified cosmetics contain a large amount of solid oil, the cosmetics tend to be hard, the touch that melts on the skin is not sufficiently obtained, and the familiarity with the skin also decreases. Was a problem. In view of this, cosmetics further containing paste oil have been proposed in order to facilitate softening at body temperature and improve skin familiarity (see Patent Documents 3 and 4).

JP 2007-153771 JP 2009-257528 Japanese Patent Laid-Open No. 2003-104828 JP 2013-139407 A

  However, when pasty oil is included in cosmetics, it can improve the familiarity of the skin, but the dense and heavy texture at the time of application will be weakened, and the skin will be firm and moisturized. It turned out that sufficient usability is not obtained.

  Therefore, the present invention has a thick and heavy texture at the time of application of cosmetics, expresses a feel that melts on the skin, has good elongation, good skin fit, and has a stickiness after application. The present invention relates to an oil-in-water emulsified cosmetic that is suppressed, improves the softness of the skin (smooth texture of the skin), and is excellent in the sustainability of a moisturizing feeling.

  The inventors of the present invention include a paste or solid oil and a liquid oil in an oil agent, and the mass ratio thereof is within a specific range, and a specific anionic surfactant, polysaccharide and polyalkylene. It has been found that oil-in-water emulsified cosmetics having the above characteristics can be obtained by using glycol together.

The present invention comprises the following components (A) to (E), and the mass ratio [(B) / (C)] of the component (B) to the component (C) is from 0.35 to 1.0: It provides cosmetics.
(A) Acyl amino acid salt
(B) Paste or solid oil
(C) Liquid oil
(D) Polyalkylene glycol
(E) Polysaccharide

  The oil-in-water emulsified cosmetic of the present invention has a texture that is thick and heavy at the time of application, while being warmed at body temperature, the cosmetic gradually softens on the skin and melts on the skin. It is a cosmetic that is well developed, has good elongation, is well-familiar with the skin, and has an excellent image of penetration of the cosmetic into the skin. In addition, the stickiness after application is suppressed, the softness of the skin (smooth texture of the skin) is improved, and the cosmetic has excellent durability of moisturizing.

[Component (A): Acylamino acid salt]
The acyl amino acid salt of component (A) is a water-soluble anionic surfactant. Examples of the amino acid constituting the acyl amino acid salt include acidic amino acids such as glutamic acid and aspartic acid; neutral amino acids such as glycine, alanine, threonine, methylalanine, and sarcosine; basic amino acids such as lysine and arginine. These amino acids may be any of L-form, D-form and DL-form. Of these, acidic amino acids and neutral amino acids are preferred from the viewpoint of improving finger picking, ease of spreading during application, good skin familiarity, and soft skin. Specifically, it is more preferable to include one or more selected from glutamic acid, aspartic acid, glycine and alanine, and it is more preferable to include glutamic acid.

  As the acyl group constituting the acyl amino acid salt, a saturated or unsaturated linear or branched fatty acid-derived acyl group is preferable, and from the viewpoint of improving the ease of fingering and easiness of elongation at the time of coating, the carbon number Is preferably 7 or more, more preferably 9 or more, still more preferably 11 or more, and still more preferably 14 or more. Further, it is preferably 23 or less, more preferably 21 or less, and still more preferably 19 or less. Specifically, the fatty acid includes one or more selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid and behenic acid. It is preferable. These may be derived from animals and plants, and examples thereof include coconut oil fatty acid, palm oil fatty acid, and hardened beef tallow fatty acid.

  Among these, from the same viewpoint, one or more selected from lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and linoleic acid are preferable. Lauric acid, myristic acid, palmitic acid, stearic acid And one or more selected from oleic acid are more preferable, and one or more selected from palmitic acid, stearic acid, and oleic acid are more preferable.

  Examples of the acyl amino acid salt include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt and magnesium salt, inorganic salts such as aluminum salt and zinc salt; ammonium salt; monoethanolamine salt Organic salts such as organic amine salts such as diethanolamine salt and triethanolamine salt, and basic amino acid salts such as arginine salt and lysine salt. Among these, from the viewpoint of reducing skin irritation and improving ease of application, one or more selected from sodium salts, potassium salts, triethanolamine salts, and arginine salts are preferable. Sodium 1 type or 2 types selected from a salt and potassium salt are more preferable.

  Specific examples of the component (A) include lauroylalanine, palmitoylalanine, lauroylglycine, palmitoylglycine, lauroylaspartic acid, myristoylglutamic acid, lauroylglutamic acid, palmitoylglutamic acid, stearoylglutamic acid, oleoylglutamic acid, and other alkali metal salts or organic amine salts Etc. Moreover, it may be a plant-derived acyl amino acid salt containing these, such as coconut oil fatty acid-derived acylated alanine, coconut oil fatty acid-derived acylated glycine, coconut oil fatty acid-derived acylated glutamic acid, palm oil fatty acid-derived acylated glutamic acid, etc. And alkali metal salts or organic amine salts.

  Of these, sodium lauroyl glutamate, sodium palmitoyl glutamate, and sodium stearoyl glutamate from the viewpoint of improving ease of melting on the skin, ease of spreading when applied, softness of the skin, softness of the skin, and durability of moisturizing feeling. And preferably one or more selected from sodium oleoyl glutamate, more preferably one or more selected from sodium palmitoyl glutamate, sodium stearoyl glutamate and sodium oleoyl glutamate, More preferably, it contains sodium stearoyl glutamate.

  The content of the component (A) in the oil-in-water emulsified cosmetic of the present invention is preferably 0.1, from the viewpoint of improving finger picking, ease of spreading during application, good skin familiarity, and softness of the skin. % By mass or more, more preferably 0.4% by mass or more, further preferably 0.6% by mass or more, further preferably 0.8% by mass or more, and preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and still more preferably. It is 1.5 mass% or less, More preferably, it is 1.2 mass% or less.

[Component (B): Pasty or solid oil agent]
The paste or solid oil agent of component (B) is a paste or solid oil agent at 1013.25 hPa and 25 ° C.

  Component (B) has a melting point of 28 ° C or higher from the viewpoint of improving finger picking, easiness of melting on the skin, ease of spreading during application, good skin conformance, and softness of the skin after application. Preferably, it is 30 ° C or higher, more preferably 32 ° C or higher. Moreover, 125 degrees C or less is preferable, 115 degrees C or less is more preferable, and 105 degrees C or less is still more preferable. In addition, the measuring method of melting | fusing point is based on the 2nd method as described in a quasi-drug raw material specification (2006), a general test method, and a melting | fusing point measuring method.

  Specifically, as a paste-like or solid oil agent, solid paraffin (melting point: 50 to 70 ° C.), microcrystalline wax (melting point: 54 to 102 ° C.), ceresin (melting point: 61 to 95 ° C.), ozokerite (melting point 61 ~ 90 ° C), petrolatum (melting point 40-60 ° C), polyethylene wax (melting point: 103-120 ° C), Fischer-Tropsch wax (melting point 108-120 ° C) and other hydrocarbons; carnauba wax (melting point: 80-86 ° C), Beeswax (melting point: 64 ° C), candelilla wax (melting point: 68-72 ° C), rice bran (melting point: 70-83 ° C), jojoba wax (melting point: 55 ° C), owl (melting point: 55 ° C), jojoba fat ( Melting point: 46-54 ° C), wax such as lanolin (melting point 37-43 ° C); hydrogenated jojoba oil (melting point: 68 ° C), hydrogenated castor oil (melting point: 84 ° C), hydrogenated palm oil (melting point: 65 ° C) ), Hydrogenated coconut oil (melting point: 70 ° C), cetyl palmitate (melt) Point: 50 ° C), glyceryl behenate (melting point: 66 ° C), tristearin, tribehenine, shea butter (melting point: 36-45 ° C), dimerlinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) ) (Melting point: 38 ° C.), tri (capryl / caprin / myristin / stearic acid) glyceryl (melting point: 40 ° C.), lauric acid hydrogenated castor oil (melting point: 51 ° C.), isostearic acid hydrogenated castor oil (melting point: 47 ° C.) , Ester oils such as monohydroxystearic acid hydrogenated castor oil (melting point: 55 to 63 ° C.); ether oils such as batyl alcohol (melting point: 60 to 70 ° C.) and chimyl alcohol (melting point: 60.5 to 61.5 ° C.); stearyl alcohol (Melting point: 58.0 ° C), higher alcohols such as behenyl alcohol (melting point: 70.5 ° C); higher fatty acids such as palmitic acid and stearic acid It is done.

  From the viewpoint of improving the ease of melting on the skin and the skin familiarity at the time of application, it is preferable to contain a fatty acid-hardened castor oil ester in the component (B). By including fatty acid-hardened castor oil ester in component (B), even when a relatively large amount of paste-like or solid oil agent is used, the ease of melting on the skin and the familiarity with the skin do not decrease, The softness and sustainability of the moisturizing feeling can be maintained at a high level.

  Fatty acid-hardened castor oil ester is a pale yellow petrolatum-like substance represented by the following structural formula: castride MH (monohydroxystearic acid-hardened castor oil, manufactured by National Mimatsu), technol MH (monohydroxystearic acid-hardened castor) Commercial products such as oil, manufactured by Yokoseki Oil & Fat Co., Ltd., technol MIS (isostearic acid-cured castor oil, manufactured by Yokoseki Oil & Fat Co., Ltd.), technol ML98 (lauric acid-cured castor oil, manufactured by Yokoseki Oil & Fat Co., Ltd.), and the like can also be used.

[Wherein, R represents an acyl group having 7 to 21 carbon atoms which may be substituted by a hydroxyl group. ]

  The number of carbon atoms of the acyl group that may be substituted by the hydroxyl group of R is preferably 9 or more, more preferably 11 or more, and 19 or less from the viewpoint of further improving the softness of the skin and the sustainability of the moisturizing feeling. Preferably, 17 or less is more preferable. Specifically, from the same viewpoint, R is preferably one selected from a 12-hydroxystearoyl group, an isostearoyl group, and a lauroyl group, and more preferably a 12-hydroxystearoyl group or a lauroyl group. Preferably, it is a 12-hydroxy stearoyl group.

  The total mass ratio of the higher fatty acid and higher alcohol to the component (B) [(higher fatty acid + higher alcohol) / (B)] is 0.20 from the viewpoint of improving the easiness of application and the sustainability of the moisturizing feeling. The above is preferable, 0.26 or more is more preferable, 0.40 or less is preferable, and 0.34 or less is more preferable.

  These pasty or solid oils can be used alone or in combination of two or more. The content of the component (B) in the oil-in-water emulsified cosmetic of the present invention is from the viewpoint of improving finger grip, easiness of spreading at the time of application, improving the durability of the moisturizing feeling, and suppressing stickiness after application. , Preferably 6% by mass or more, more preferably 8% by mass or more, further preferably 10% by mass or more, further preferably 12% by mass or more, and preferably 30% by mass or less, more preferably 25% by mass or less. More preferably, it is 22% by mass or less, more preferably 17% by mass or less.

  In addition, the content of the fatty acid-hardened castor oil ester in the component (B) is preferably 10% by mass or more, more preferably 12% by mass or more, from the viewpoint of improving the ease of melting on the skin and skin familiarity. More preferably, it is 15% by mass or more, preferably 50% by mass or less, more preferably 35% by mass or less, and still more preferably 25% by mass or less.

[Component (C): Liquid oil]
The liquid oil agent of component (C) is a liquid oil agent at 1013.25 hPa and 25 ° C. Ingredient (C) includes ester oil, hydrocarbon oil, ether oil, silicone oil, fluorine oil, higher fatty acid, higher alcohol, etc., improving ease of application, familiarity with skin, and sustainability of moisturizing feeling. From the point of view, it is preferable to include one or more selected from ester oils, hydrocarbon oils and silicone oils.

  The melting point of component (C) is preferably 25 ° C. or less, more preferably 22 ° C. or less, from the viewpoint of improving finger picking, ease of spreading during application, good skin fit, and softness of the skin after application. More preferably, it is 20 ° C. or less.

  Liquid ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, decyl oleate, hexyl decyl dimethyloctanoate, myristyl lactate, lanolin acetate, stearic acid Isocetyl, isocetyl isostearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, tri 2-ethylhexanoic acid trimethylolpropane, triisostearic acid trimethylolpropane, tetra-2-ethylhexanoic acid pentaerythritol, tri-2-ethylhexa Glyceryl acid, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, diethylhexyl naphthalenedicarboxylate, alkyl benzoate (12 to 15 carbon atoms), cetearyl isononanoate, tri (capryl) Acid / capric acid) glyceryl, (dicaprylic acid / capric acid) butylene glycol, glyceryl triisostearate, glyceryl tri-2-heptylundecanoate, triglyceride fatty acid glyceryl, castor oil fatty acid methyl ester, oleyl oleate, 2-heptyl palmitate Undecyl, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptyl undecyl adipate, ethyl laurate, diethylhexyl sebacate, 2-ethyl myristate In addition to xylyl, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, tripropylene glycol dipivalate, paramethoxycinnamate 2- Ethylhexyl, 2-ethoxyethyl paramethoxycinnamate, isopropyl dimethoxycinnamate / diisopropyl cinnamate ester, methyl bis (trimethylsiloxy) silylisopentyl trimethoxycinnamate, paradimethylamino acid amyl benzoate, paradimethylamino acid Examples include 2-ethylhexyl benzoate, ethylene glycol salicylate, 2-ethylhexyl salicylate, benzyl salicylate, homomenthyl salicylate, and octocrylene.

  Among these, from the viewpoint of forming an oil-in-water emulsification system, improving skin familiarity after application, softness of the skin, and suppressing stickiness after application, diisopropyl sebacate, 2-ethylhexyl paramethoxycinnamate, It preferably contains one or more selected from glyceryl tri (caprylic acid / capric acid), 2-ethylhexyl myristate, glyceryl triisostearate, glyceryl tri-2-heptylundecanoate and triglyceride fatty acid glyceryl. One or more selected from (caprylic acid / capric acid) glyceryl, 2-ethylhexyl myristate and 2-ethylhexyl paramethoxycinnamate are more preferred, and tri (caprylic acid / capric acid) glyceryl, myristic acid 2 -Ethylhexyl and 2-ethylhexyl paramethoxycinnamate One or more kinds et selected are more preferable.

  The ester oil may be derived from animal and vegetable oils, and the production area and type of the animal and plant, the extraction site and the pressing site, the extraction method and the pressing method can be used without particular limitation. Examples of animal and plant-derived ester oils include olive oil, macadamia nut oil, meadow foam oil, castor oil, safflower oil, sunflower oil, avocado oil, canola oil, kyonin oil, rice germ oil, rice bran oil, and shea butter. Among these, from the same viewpoint, it is preferable to include one or more selected from olive oil, meadow foam oil, macadamia nut oil, rice bran oil and shea butter, and from olive oil, macadamia nut oil, rice bran oil and shea butter It is more preferable to include one or more selected, and it is even more preferable to include one or two selected from olive oil, macadamia nut oil and shea butter.

  Examples of the liquid hydrocarbon oil include liquid paraffin, liquid isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, cycloparaffin, α-olefin oligomer, squalane and the like. Among these, from the same viewpoint, it is preferable to include one or two selected from liquid paraffin, liquid isoparaffin, light liquid isoparaffin, squalane and α-olefin oligomer, and liquid paraffin, liquid isoparaffin, squalane and α- It is more preferable to include one or two selected from olefin oligomers, and it is even more preferable to include one or two selected from liquid paraffin, liquid isoparaffin, and α-olefin oligomer.

  Examples of the liquid ether oil include dialkyl ethers, and specific examples include dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether and the like.

  Liquid silicone oils include dimethylpolysiloxane, polyether-modified silicone, amino-modified silicone, carboxy-modified silicone, methylphenylpolysiloxane, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy-modified silicone, and fluorine-modified silicone. In addition to cyclic silicone, alkyl-modified silicone, etc., dimethicodiethylbenzalmalonate (polysilicone-15) which is a liquid ultraviolet absorber.

  Among these, from the same viewpoint, it is preferable to include one or more selected from dimethylpolysiloxane, methylphenylpolysiloxane and cyclic silicone, and one selected from dimethylpolysiloxane and methylphenylpolysiloxane. Or it is more preferable that 2 types are included.

  Examples of the liquid fluorine oil include perfluorodecalin, perfluoroadamantane, perfluorobutyltetrahydrofuran, perfluorooctane, perfluorononane, perfluoropentane, perfluorodecane, perfluorododecane, perfluoropolyether, and the like. .

  Examples of liquid higher fatty acids include oleic acid, isostearic acid, undecylenic acid and the like.

  The liquid higher alcohol is an alcohol having 8 or more carbon atoms, and examples thereof include lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, and hexyldecanol.

  The content of the component (C) in the oil-in-water emulsion cosmetic of the present invention is preferably 15% by mass or more, more preferably 18% by mass from the viewpoint of improving the emulsion stability and suppressing stickiness after application. Or more, more preferably 20% by mass or more, further preferably 22% by mass or more, and preferably 40% by mass or less, more preferably 35% by mass or less, still more preferably 31% by mass or less, still more preferably 28% by mass. % Or less.

  In addition, the content ratio (B) / (C) of the component (B) to the component (C) in the oil-in-water emulsified cosmetic of the present invention is 0.35 from the viewpoint of improving the familiarity with the skin and the sustainability of the moisturizing feeling. Or more, preferably 0.37 or more, more preferably 0.4 or more, still more preferably 0.5 or more, and 1.0 or less, preferably 0.9 or less, more preferably 0.8 or less, still more preferably 0.7 or less. .

  In addition, the total content of the component (B) and the component (C) in the oil-in-water emulsified cosmetic of the present invention is preferably 20 masses from the viewpoint of improving the ease of extension during application and the sustainability of the moisturizing feeling. % Or more, more preferably 25% by weight or more, still more preferably 30% by weight or more, further preferably 35% by weight or more, and 60% by weight or less, preferably 55% by weight or less, more preferably 50% by weight. It is at most 45% by mass, more preferably at most 45% by mass.

[Component (D): Polyalkylene glycol]
The number of carbon atoms of the alkylene group in the polyalkylene glycol of component (D) is preferably 2 to 4, more preferably 2 or 3, and even more preferably 2 from the viewpoint of improving the solubility in water and the moisturizing feeling of the skin. . As a specific alkylene group, an ethylene group or a propylene group is preferable, and an ethylene group is more preferable. That is, as component (D), polyethylene glycol and polypropylene glycol are preferable, and polyethylene glycol is more preferable.

  The number average molecular weight of the component (D) polyalkylene glycol is preferably 600 or more, more preferably 800 or more, more preferably 6000 or less, and more preferably 4000 or less, from the viewpoint of improving the softness of the skin after application. . From the viewpoint of improving the non-stickiness after coating, 10000 or more is preferable, 15000 or more is more preferable, 30000 or less is preferable, and 25000 or less is more preferable.

  In addition, the number average molecular weight of polyalkylene glycol can be measured by the terminal group determination method, specifically, the hydroxyl value obtained by titration, by the average molecular weight test described in the quasi-drug material specification.

  As the component (D), commercially available products can be used. For example, PEG # 1000, PEG # 1540, PEG # 2000, PEG # 4000, PEG # 6000, PEG # 11000, PEG # 20000 (all manufactured by NOF Corporation) Etc. can be used. These polyalkylene glycols can be used alone or in combination of two or more.

  The content of the component (D) in the oil-in-water emulsified cosmetic of the present invention is preferably 1.0% by mass or more, more preferably from the viewpoint of improving ease of melting on the skin and softness of the skin after application. Is 1.2 mass% or more, more preferably 1.4 mass% or more, more preferably 1.6 mass% or more, preferably 4.0 mass% or less, more preferably 3.8 mass% or less, still more preferably 3.4 mass% or less, Preferably it is 3.0 mass% or less.

[Component (E): Polysaccharide]
In the present invention, the polysaccharide of component (E) is a carbohydrate constituted by binding 10 or more monosaccharides, and examples thereof include acidic polysaccharides, neutral polysaccharides, basic polysaccharides, and the like. . Examples of acidic polysaccharides include carrageenan, pectin, gum arabic, xanthan gum, gellan gum, agar, tragacanth gum, succinoglycan, heparin, hyaluronic acid, acetylated hyaluronic acid, chondroitin sulfate, keratosulfate, dermatan sulfate, and salts thereof. It is done. Examples of neutral polysaccharides include tamarind seed gum, guar gum, locust bean gum, starch, pullulan, and chondroitin. Examples of basic polysaccharides include chitin and chitosan. Among the acidic polysaccharides, the salt may be a pharmaceutically or biologically acceptable salt, for example, an alkali metal salt such as sodium salt or potassium salt; an alkaline earth metal such as magnesium salt or calcium salt Examples thereof include salts; zinc salts; ammonium salts; alkanolamine salts such as monoethanolamine salts. Among these, from the viewpoint of reducing skin irritation and improving non-stickiness at the time of application, one or more salts selected from sodium salt, potassium salt, triethanolamine salt and arginine salt are preferable, Sodium salt is more preferred.

  Of these, acidic polysaccharides are preferable from the viewpoint of improving skin softness and softness during application, and carrageenan, xanthan gum, succinoglycan, hyaluronic acid, hyaluronic acid salt, acetylated hyaluronic acid and acetylation. It is more preferable to include one or more selected from hyaluronate, and it is even more preferable to include one or more selected from carrageenan, xanthan gum, hyaluronic acid and hyaluronate.

  The content of the component (E) in the oil-in-water emulsified cosmetic of the present invention is preferably 0.01% by mass or more from the viewpoint of improving easiness of spreading at the time of application, skin conformity after application, and softness of the skin. More preferably 0.08% by mass or more, further preferably 0.14% by mass or more, further preferably 0.2% by mass or more, and preferably 1.0% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.35% by mass. Hereinafter, it is more preferably 0.3% by mass or less.

[Component (F): Water]
The oil-in-water emulsion cosmetic of the present invention contains water as component (F). The content of the component (F) in the oil-in-water emulsified cosmetic of the present invention is preferably 25% by mass or more, more preferably 28% by mass or more, from the viewpoint of good skin familiarity and a refreshing feel. More preferably, it is 32% by mass or more, more preferably 35% by mass or more, preferably 50% by mass or less, more preferably 47% by mass or less, still more preferably 44% by mass or less, and further preferably 40% by mass or less. is there.

  The mass ratio (F) / (E) of the component (F) to the component (E) in the oil-in-water emulsified cosmetic of the present invention improves the easiness of stretching at the time of application and the familiarity of the skin after the application. From the viewpoint, it is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, still more preferably 120 or more, preferably 500 or less, more preferably 400 or less, still more preferably 300 or less, still more preferably. 200 or less.

[Component (G): Polyhydric alcohol other than Component (D)]
The oil-in-water emulsified cosmetic of the present invention may further contain a polyhydric alcohol other than the component (D) as the component (G).

  Among the polyhydric alcohols other than component (D), dihydric alcohols include ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,2-pentylene glycol, 1,3-pentylene glycol, 1,4- Alkylene glycols such as pentylene glycol, 1,5-pentylene glycol and hexylene glycol; dialkylene glycols such as diethylene glycol and dipropylene glycol; and trivalent alcohols such as glycerin and trimethylolpropane; Examples of the alcohols having a valence of 4 or more include polyglycerols such as diglycerol and triglycerol; glucose, maltose, maltose, sucrose, xylitol, sorbitol, malbitol, polyoxyethylene methyl glucoside, polyoxyethylene ethyl glucoside, polyoxy Sugars and sugar alcohols such as ethylene propylene glucoside and the like.

  Among these, from the viewpoint of suppressing a squeaky feeling and sticky feeling and improving the sustainability of the moisturizing feeling, a divalent or trivalent alcohol is preferable, and a divalent alcohol is more preferable. Specifically, it is preferable to include one or more selected from ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol and glycerin, and selected from diethylene glycol, dipropylene glycol and glycerin. It is more preferable to include one or two or more selected from the above, more preferable to include one or two selected from dipropylene glycol and glycerin, and even more preferable to include dipropylene glycol.

  The content of the component (G) in the oil-in-water emulsified cosmetic of the present invention is preferably 5% by mass or more, more preferably 8% by mass from the viewpoint of improving the durability of the moisturizing feeling and the skin familiarity at the time of application. More preferably, it is 10% by mass or more, preferably 20% by mass or less, more preferably 18% by mass or less, and still more preferably 16% by mass or less.

[Component (H): Surfactant other than Component (A)]
The oil-in-water emulsified cosmetic of the present invention can further contain a surfactant other than the component (A) as the component (H). As the surfactant other than the component (A), anionic surfactants other than the component (A), cationic surfactants, nonionic surfactants, amphoteric surfactants and the like can be used, but skin irritation The content of the anionic surfactant other than component (A) and the cationic surfactant in the oil-in-water emulsion cosmetic is 0.5 mass% or less is preferable, 0.1 mass% or less is more preferable, and it is still more preferable that an anionic surfactant other than component (A) and a cationic surfactant are not substantially contained.

  Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyethylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, Examples include sorbitan fatty acid esters and propylene glycol fatty acid esters.

  Among these, from the viewpoint of improving stability over time and reducing stickiness, one or more selected from polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid ester, and sorbitan fatty acid ester are preferable. One or two selected from oxyethylene alkyl ether and glycerin fatty acid ester are more preferable.

  The HLB value of the nonionic surfactant or, when two or more kinds of nonionic surfactants are contained, the mixed HLB value is preferably 3 or more, more preferably 4 from the viewpoint of improving the temporal stability. More preferably, it is 5 or more, preferably 10 or less, more preferably 9 or less, and still more preferably 8 or less.

  Here, the HLB value is an index representing the ratio of relative affinity of the surfactant to both liquids in an oil-water system, and means the HLB value at 25 ° C. according to the definition of Griffin. The HLB value by Griffin is defined in J. Soc. Cosm. Chem., 1954, 5: 249-256.

The mixed HLB value refers to an HLB composed of two or more nonionic surfactants when two or more nonionic surfactants are used, and the HLB value of each nonionic surfactant is the mass contained therein. This is a weighted average based on the ratio, and is calculated by the following formula.
Mixed HLB value = Σ (HLBx × Wx) / ΣWx
(HLBx indicates the HLB value of the nonionic surfactant X. Wx indicates the mass (g) of the nonionic surfactant X.)

  The content of the nonionic surfactant in the oil-in-water emulsion cosmetic of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, from the viewpoint of improving the stability over time and reducing stickiness. Preferably it is 3.0 mass% or more, Preferably it is 6.0 mass% or less, More preferably, it is 5.0 mass% or less, More preferably, it is 4.5 mass% or less.

[Other optional ingredients]
In addition, the oil-in-water emulsified cosmetic of the present invention includes a thickener other than the component (E), a monohydric alcohol having 1 to 3 carbon atoms, a metal oxide, a sequestering agent, a neutralizing agent, and a pH adjusting agent. It can contain various raw materials usually used in cosmetics such as antioxidants, antibacterial agents, antiseptics, antiperspirants, drugs, fragrances, and various extracts. Each of these agents is not limited to the use as each agent, but can be diverted to other uses according to the purpose, for example, using an antiperspirant as a fragrance, or combined with other uses, for example, antiperspirant. It can be used as an agent and an effect as a fragrance.

〔Production method〕
The oil-in-water emulsified cosmetic of the present invention can be produced by a predetermined procedure depending on the form. For example, the oil-in-water emulsified cosmetic of the present invention is an aqueous phase containing components (A), (D), (E) and optionally components (F), (G) and other water-soluble optional components. Heating and stirring step 1,
Step 2 of heating and stirring the oil phase containing components (B), (C) and optionally component (H) and other oil-soluble optional components;
Step 3 of mixing the preparation of Step 1 and the preparation of Step 2 under heating to emulsify
It can manufacture by the method containing.

  The heating temperature in steps 1 to 3 is preferably 70 ° C or higher, more preferably 75 ° C or higher, and preferably 90 ° C or lower, more preferably 85 ° C or lower, from the viewpoint of sufficiently dissolving each component. .

  Moreover, when using the component which is easy to volatilize, such as a fragrance | flavor and a phenoxyethanol, and the component which is easy to receive to a heat | fever, it is preferable to include the process 4 which adds and mixes these components after forming the emulsion of the process 3. . From the above viewpoint, the temperature in step 4 is preferably less than 70 ° C, more preferably 40 ° C or more and 60 ° C or less.

[Use, dosage form]
As the use of the oil-in-water emulsified cosmetic of the present invention, it can be used without particular limitation for cosmetics, quasi drugs, pharmaceuticals, etc., but has a thick and heavy texture when applied, and on the skin Familiarity while melting, firmness, excellent moisturizing feeling until the next morning, can be suitably used as a skin cosmetic, preferably by applying to any skin except the scalp, more preferably the face, body, limbs, etc. Can be used. Specifically, it is suitable for use as skin cosmetics such as shampoos, rinses, conditioners, and other hair cosmetics, facial cleansers, cleansing cosmetics, lotions, milky lotions, creams, serums, sunscreen cosmetics, packs, and massage cosmetics. it can. Among these, it is preferable to apply as skin care cosmetics such as milky lotion, cream, and cosmetic liquid.

  The hardness of the oil-in-water emulsified cosmetic of the present invention is preferably 15 g or more, preferably 20 g or more, more preferably 26 g or more, from the viewpoint of improving finger picking and ease of melting at body temperature during application. Moreover, 60 g or less is preferable, 45 g or less is more preferable, and 42 g or less is still more preferable. In addition, about the measuring method of hardness, it shows in an Example.

  The pH value of the oil-in-water emulsion cosmetic of the present invention is preferably 5 or more, more preferably 5.5 or more, more preferably 7 or less, and preferably 6 or less from the viewpoint of improving stability over time and suppressing skin irritation. More preferred.

Examples 1-16, Comparative Examples 1-5
Oil-in-water emulsified cosmetics (creams) having the formulations shown in Tables 1 to 3 were prepared and subjected to various evaluations.

(Production method)
1. Ingredients 3-10, 18, 19 are mixed, heated to 80 ° C. and stirred well to obtain preparation a.
2. Ingredients 1, 2, 11-16, 20-21, 25 are mixed, heated to 80 ° C. and stirred well to obtain preparation b.
3. While the preparation b is stirred under heating at 80 ° C., the preparation a is added, and then uniformly dispersed with a homomixer (7000 rpm, 10 minutes) to obtain a preparation c.
4). The preparation c is naturally cooled, and when the preparation d reaches 50 ° C., components 17 and 22 to 24 are added, and the mixture is uniformly dispersed with a homomixer (7000 rpm, 5 minutes) to obtain the preparation d.
5). The preparation d is filled in a glass bottle and then naturally cooled to room temperature.

(sensory evaluation)
Apply a certain amount (1 g) of each sample to the inside of the upper arm of one professional panelist, first apply a palm on the sample and warm at body temperature for 3 seconds. Next, spread the sample on the part to be coated, and slowly and gently adjust it.
After that, a questionnaire evaluation was conducted on the ease of finger removal of the sample, ease of melting at body temperature at the time of application, ease of extension, good skin familiarity, softness of the skin after application, non-stickiness, and sustainability of the moisturizing effect. It was. Sensory evaluation was performed according to the following criteria.

(Good finger picking)
Easiness of taking the sample on the finger when the finger is put in the sample ◎: Appropriate amount (1 g) of the sample can be obtained with a single finger insertion ○: When a little force is applied, the appropriate amount (1 g) of the sample is obtained △: Can be removed with only one finger insertion Even if a little force is applied, an appropriate amount (1 g) of the sample cannot be obtained with one finger insertion, but can be obtained with three finger insertions ×: The finger slides on the sample, Even if force is applied, almost no sample can be taken with 3 finger insertions.

(Ease of melting at body temperature when applied)
Change from the initial hardness felt when the sample is warmed up with the palm of the hand for 3 seconds ◎: Warm up and the whole sample becomes moderately soft ○: Warm up and soften, but some hardness remains in the sample △: Warm and soft, but some hardness remains in the whole sample ×: Little change in hardness of sample is felt even when warmed

(Ease of stretching during application)
Easiness of sample elongation with fingers after warming ◎: Finger resistance during application is moderate and very easy to extend ○: Resistance to finger during application is somewhat heavy, but easy to extend Δ: Hardness remains in a part of the sample, and it is difficult to extend. ×: The sample is hard and very difficult to extend.

(Good skin familiarity when applied)
The time from when the sample starts to stretch until finger sliding stops ◎: Less than 10 seconds ○: More than 10 seconds but less than 15 seconds △: More than 15 seconds but less than 20 seconds ×: More than 20 seconds

(Softness of the skin after application)
The softness of the skin you feel right after application
◎: A feeling of firmness is felt and the skin feels very soft ○: A feeling of elasticity is felt and the skin feels soft △: A feeling of firmness is felt, and the skin feels somewhat soft ×: Change Can't feel

(No stickiness after application)
Presence / absence of stickiness after application ◎: No sticky feeling ○: Feeling slightly sticky △: Feeling weak sticky feeling ×: Feeling strong stickiness

(Durability of moisturizing feeling)
Feels moisturized after 12 hours after application ◎: Feels very moisturized ○: Feels moistened skin △: Feels moistened slightly ×: Moisturized skin I do not feel that

(hardness)
Using a card meter (I.techno Engineering Co., Ltd .: Curdmeter-MAX ME-500), measuring temperature 30 ° C, spring weight 100g, pressure sensitive disk type φ10, sample table ascent rate 1inch / 7 seconds, breaking load (units) g) was determined and described as hardness. The sample was stored in a constant temperature bath at 30 ° C. for one day and used with a stable hardness.

(PH)
The pH of the sample was measured at 25 ° C. using a pH meter (manufactured by Horiba, model number F-22).

* 1: Amisoft HS-11P, manufactured by Ajinomoto Co., Inc.
* 2: Amisoft GS-11P, manufactured by Ajinomoto Co., Inc.
* 3: SR bead wax-PA- (JP) (melting point: 60-67 ° C), manufactured by CRODA JAPAN
* 4: Chloratum V-SO- (JP) (melting point: 30-70 ° C), made by CRODA JAPAN
* 5: Cast ride MH (melting point 55-63 ° C), manufactured by National Mimatsu Co., Ltd.
* 6: POFAC 1855 (melting point 53-63 ° C), manufactured by SOUTHERN ACIDS INDUSTRIES
* 7: Behenyl alcohol 65 (melting point 65-73 ° C), manufactured by Higher Alcohol Industry Co., Ltd.
* 8: SILKFLO 364, NOF Corporation
* 9: Cropure OL-LQ- (JP), made by Croda Japan
* 10: F-96A-100cs, manufactured by Shin-Etsu Chemical Co., Ltd.
* 11: PEG # 1000, number average molecular weight 1000, manufactured by NOF Corporation
* 12: PEG # 4000, number average molecular weight 3100, manufactured by NOF Corporation
* 13: PEG # 20000, number average molecular weight 20000, manufactured by NOF Corporation
* 14: Hyaluronic acid FCH-120, manufactured by Kikkoman Biochemifa
* 15: Shintalen L, manufactured by Wako Pure Chemical Industries, Ltd.
* 16: Montex A, HLB3.8, manufactured by Miyoshi Oil & Fats Co., Ltd.
* 17: NIKKOL BC-20, HLB17.0, manufactured by Nikko Chemical

  Hereinafter, formulation examples of the oil-in-water emulsified cosmetic of the present invention will be shown. Both have the same effects as the embodiment.

Formulation Example 1 (Moisturizing cream)
Ingredient name Content (mass%)
N-stearoyl-L-sodium glutamate (* 1) 1
Beeswax (* 3) 2
Vaseline (* 4) 5
Monohydroxystearic acid hydrogenated castor oil (* 5) 4
Stearic acid (* 6) 1
Behenyl alcohol (* 7) 3.5
Microcrystalline wax (* 18) 2
Cetyl palmitate 1
α-Olefin oligomer (* 8) 15
Olive oil (* 9) 6
Methyl polysiloxane (* 10) 1
Plant-based squalane (* 19) 4
Polyethylene glycol 1000 (* 11) 2
Polyethylene glycol 4000 (* 12) 2
Xanthan gum 0.25
Dipropylene glycol 7
Concentrated glycerin 6
Lipophilic glyceryl monostearate (* 16) 3
Polyoxyethylene cetyl ether (* 17) 1
Edetate disodium 0.05
Phenoxyethanol 0.5
N-acetylglucosamine (* 20) 0.1
Pear juice fermented liquid (* 21) 0.1
Honeysuckle extract (* 22) 0.1
Fragrance 0.1
Purified water remaining

* 1, 3-12, 16, 17 are the same as in the example
* 18: Multiwax W-445 S, melting point 54 ~ 102 ℃, manufactured by Sonneborn
* 19: Saracos RS, manufactured by Nisshin Oillio Group
* 20: Marine Sweet F, manufactured by Yaizu Fisheries Chemical Industries
* 21: Fermentage Pear B, manufactured by Ichimaru Falcos
* 22: Kinginga extract-J, manufactured by Maruzen Pharmaceutical Co., Ltd.

Formulation example 2 (beauty cream)
Ingredient name Content (mass%)
N-stearoyl-L-sodium glutamate (* 1) 1
Beeswax (* 3) 2
Vaseline (* 4) 7
Monohydroxystearic acid hydrogenated castor oil (* 5) 2
Stearic acid (* 6) 1
Behenyl alcohol (* 7) 3.5
Microcrystalline wax (* 18) 1
Cetyl palmitate 2
α-Olefin oligomer (* 8) 20
Olive oil (* 9) 6
Methyl polysiloxane (* 10) 1
Plant-based squalane (* 19) 8
Polyethylene glycol 1000 (* 11) 1
Polyethylene glycol 4000 (* 12) 1
Xanthan gum 0.2
1,3-butylene glycol 5
Dipropylene glycol 4
Concentrated glycerin 6
Lipophilic glyceryl monostearate (* 16) 3
Polyoxyethylene cetyl ether (* 17) 1
Edetate disodium 0.05
Phenoxyethanol 0.5
Seaweed extract (* 23) 0.1
Ghetto leaf extract (* 24) 0.1
Yeast extract (* 25) 0.1
Salamander extract (* 26) 0.1
Ashitaba extract (* 27) 0.1
Fragrance 0.1
Purified water remaining

* 1, 3-12, 16, 17 are the same as in the example
* 23: Homeo Shield, made by Lucas Meyer Cosmetics Canada
* 24: Moon peach extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 25: BIODYNES TRF IMPROVED 25, manufactured by Arch Personal Care Products
* 26: Salamander extract-J, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 27: Ashitaba extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.

  In addition, the fragrance | flavor used by each prescription example is the following floral system mixing | blending fragrance | flavors. In addition, 1% DPG, 5% DPG, and 10% DPG described in the component name means that the active ingredient content of the fragrance is 1% by mass, 5% by mass, and 10% by mass, respectively. Show.

Floral-based blended fragrance formulation Content (mass%)
Bergamot oil (natural fragrance) 2.0
Linarel acetate 1.5
Methyl anthranilate 0.2
Pettigrain oil (natural flavor) 0.5
Auranthiol 10% DPG (aka: Schiff base of hydroxycitronellal and methylanthranilate) 1.0
Amyl allyl glycolate 1% DPG 0.5
Galvanum oil 1% DPG (natural fragrance) 0.1
Blackcurrant Buzz Absolute 10% DPG (natural fragrance) 1.5
Tadget oil 10% DPG (natural fragrance) 0.8
Ylang Ylang Oil Extra (natural fragrance) 2.0
Benzyl acetate 5.0
Methyl dihydrojasmonate 13.0
Sis Jasmon 10% DPG 1.0
Jasmine absolute (natural fragrance) 0.5
Indole 5% DPG 0.5
Alphahexyl cinnamic aldehyde 1.5
L-citronellol 0.5
Rose oil (natural fragrance) 0.5
Rose Absolute (natural fragrance) 0.5
Damasenone 1% DPG 0.5
L-Rose oxide 1% DPG 0.5
Dimethylbenzyl carbonyl acetate 1.0
Hydroxycitronellal 3.0
Liral (also known as 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxaldehyde) 3.5
Cyclamenaldehyde (also known as 2-methyl-3- (4-isopropylphenyl) -propanal) 0.5
Alpha isomethyl ionone (also known as 5- (2,2,6-trimethyl-2-cyclohexenyl) -3-methyl-3-buten-2-one) 4.0
Oris Concrete 10% DPG (natural fragrance) 0.8
Methyl eugenol 0.5
Iso-E Super (also known as 7-acetyl-1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethylnaphthalene) 2.5
Belt Fix Cool (aka: 4-acetyl-trimethyl-6,8α-ethano-1,2,3,5,6,7,8,8α-octahydronaphthalenone) 4.0
Vetiver acetate 2.0
Sandalwood oil (natural fragrance) 1.5
Bagdanol 10% DPG (also known as 2-ethyl-4- (2,2,3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol) 1.0
Patchouli oil 10% DPG (natural fragrance) 0.2
Evernil 10% DPG (also known as methyl-2,4-dihydroxy-3,6-dimethylbenzoate) 1.5
Galac Solid 50% Benzyl Benzoate (also known as 4,6,6,7,8,8-hexamethyl-1,3,4,6,7,8-hexahydrocyclopentabenzopyran) 10.0
Cyclopentadecanolide 4.0
Heliotropin 0.5
Coumarin 0.5
Vanillin 10% DPG 0.5
Ethyl vanillin 10% DPG 2.5
Raspberry ketone 10% DPG (also known as 4- (4-hydroxyphenyl) -2-butanone) 0.5
Gamma undecalactone 10% DPG 1.5
Gamma decalactone 10% DPG 1.5
Love Danum Absolute 10% DPG (natural fragrance) 0.5
Dipropylene glycol

Claims (4)

An oil-in-water emulsified cosmetic comprising the following components (A) to (E), wherein the mass ratio [(B) / (C)] of the component (B) to the component (C) is 0.35 or more and 1.0 or less.
(A) Acyl amino acid salt
(B) Paste or solid oil
(C) Liquid oil
(D) Polyalkylene glycol
(E) Polysaccharide   The oil-in-water emulsified cosmetic according to claim 1, wherein the total content of component (B) and component (C) is 20% by mass or more and 60% by mass or less.   The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the component (B) contains from 10% by mass to 50% by mass of fatty acid-hardened castor oil ester based on the total amount of the component (B).   The oil-in-water emulsified cosmetic according to any one of claims 1 to 3, wherein the mass ratio of water to the component (E) is from 80 to 500.