Oil-based emulsions in water

Abstract

To provide oil-in-water emulsion compositions with excellent stability that give a rich feeling at the time of application and have no stickiness after application.SOLUTION: Provided is an oil-in-water emulsion composition containing the following components (A), (B) and (C): (A) 1.2 to 5 mass% of phospholipid; (B) a higher alcohol having 14 to 18 carbon atoms; and (C) 1 to 50 mass% of an oil agent that is liquid at 25°C.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsion composition.

Background Art

[0002] Oil-in-water type emulsified cosmetics have been studied for various sunscreen cosmetics and makeup cosmetics because they have a refreshing and non-greasy feel when used. For example, Patent Document 1 describes that an oil-in-water type emulsified cosmetic containing a phospholipid, a sterol ester, a higher alcohol, a liquid oil agent, an ultraviolet absorber having a sulfonic acid group, and an acrylic thickener has an excellent ultraviolet protection effect, a good finish after application, no stickiness, and excellent emulsion stability.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventional cosmetics have not provided a firm feeling when applied, and the application feeling has been insufficient. In addition, there have been problems with stability and stickiness of the skin after application.

Means for Solving the Problems

[0005] The present inventors have found that by combining a phospholipid, a higher alcohol having 14 to 18 carbon atoms, and a liquid oil agent at 25°C in a specific ratio, an oil-in-water type emulsion composition having a firm feeling when applied, no stickiness after application, and excellent stability can be obtained.

[0006] The present invention provides the following components (A), (B), and (C): (A) 1.2 to 5% by mass of a phospholipid, (B) Higher alcohols with 14 to 18 carbon atoms, (C) Liquid oil at 25℃ 1-50% by mass This relates to an oil-in-water emulsion composition containing [specific ingredient]. [Effects of the Invention]

[0007] The oil-in-water emulsion composition of the present invention exhibits excellent stability in suppressing separation and crystal precipitation, provides a rich texture when applied, and leaves no stickiness after application, resulting in a moist feeling. Furthermore, the term "richness" refers to the feeling that when an oil-in-water emulsion is spread on the skin with the fingers, it initially feels firm, but as the spreading continues, it rapidly softens. The change in resistance to the fingers during spreading is clearly felt, giving the user the sensation that the oil-in-water emulsion is blending into the skin. This clear feeling of change in finger resistance allows the oil-in-water emulsion to adhere to the skin, resulting in a more effective experience of moisturizing and other benefits than ever before. [Modes for carrying out the invention]

[0008] In the present invention, the phospholipid component (A) is preferably 60% by mass or more, more preferably 64% by mass or more, even more preferably 68% by mass or more, and even more preferably 70% by mass or more, from the viewpoint of improving the stability of appearance such as suppressing separation and crystal precipitation, and suppressing stickiness after application. Other phospholipid components besides phosphatidylcholine include phosphatidic acid, phosphatidylserine, phosphatidylethanolamine, phosphatidylinositol, and phosphatidylglycerol.

[0009] The phospholipids used in this invention may be natural products extracted and purified from plants or animals, chemically synthesized products, or processed products such as hydrogenation or hydroxylation. As natural products, phospholipids extracted from soybeans or egg yolks or their purified products are preferred from the viewpoint of improving long-term stability and reducing skin irritation, and hydrogenated or hydroxylated phospholipids are more preferred. Specifically, hydrogenated soybean lecithin and / or hydrogenated egg yolk lecithin are suitable examples.

[0010] The phosphatidylcholine content in phospholipids can be analyzed using methods such as thin-layer chromatography (TLC), high-performance liquid chromatography (HPLC), and IatroScan (manufactured by Yatron). For example, one method described in Japanese Patent Publication No. 2001-186898 involves spotting an organic solvent containing phospholipids onto a TLC plate, developing it with chloroform:methanol:acetic acid = 65:25:10, spraying with 50% sulfuric acid ethanol, heating, and then analyzing the phospholipids with a densitometer. Any method that can measure and calculate the phosphatidylcholine content and percentage in phospholipids is acceptable.

[0011] Phospholipids containing 60% or more phosphatidylcholine include: Coatsome NC-21 (hydrogenated soybean phospholipid; containing 90% or more phosphatidylcholine; manufactured by NOF Corporation), Resinol S-10E (hydrogenated soybean phospholipid; containing 75-85% phosphatidylcholine; manufactured by Nikko Chemicals Co., Ltd.), Resinol S-10EX (hydrogenated soybean phospholipid; containing 95% or more phosphatidylcholine; manufactured by Nikko Chemicals Co., Ltd.), Basis LS-60HR (hydrogenated soybean phospholipid; containing 60-75% phosphatidylcholine; manufactured by Nisshin Oillio Co., Ltd.), Phospholipon 85G (soybean phospholipid; containing 85% phosphatidylcholine; manufactured by H. Holstein Co., Ltd.), Phospholipon 90G (soybean phospholipid; containing 94% or more phosphatidylcholine; manufactured by H. Holstein Co., Ltd.), Phospholipon 75IP (Soybean phospholipid; containing 70% by mass of phosphatidylcholine; manufactured by H. Holstein), Phospholipon 90IP (Soybean phospholipid; containing 90% or more by mass of phosphatidylcholine; manufactured by H. Holstein), Phospholipon 80H (Hydrogenated soybean phospholipid; containing 70% or more by mass of phosphatidylcholine; manufactured by H. Holstein), Phospholipon 90H (Hydrogenated soybean phospholipid; containing 90% or more by mass of phosphatidylcholine; manufactured by H. Holstein), Phospholipon 75HIP (Hydrogenated soybean phospholipid; containing 70% or more by mass of phosphatidylcholine; manufactured by H. Holstein), Phospholipon 90HIP (Hydrogenated soybean phospholipid; containing 90% or more by mass of phosphatidylcholine; manufactured by H. Holstein), Lipoid E Lipoid E 80 (purified egg yolk phospholipid; contains 80% or more phosphatidylcholine by mass; manufactured by H. Holstein), Lipoid E 80 S (purified egg yolk phospholipid; contains 64% or more phosphatidylcholine by mass; manufactured by H. Holstein), Lipoid E PC S (purified egg yolk phospholipid; contains 96% or more phosphatidylcholine by mass; manufactured by H. Holstein), Epikron 200 (contains 95% or more phosphatidylcholine by mass; manufactured by Cargill), Phospholipid PCSH70 (hydrogenated soybean phospholipid; contains 70-80% phosphatidylcholine by mass;Examples include egg yolk lecithin PL-100E (containing approximately 83% by mass of phosphatidylcholine; manufactured by Kewpie Corporation), etc.

[0012] Furthermore, as component (A), from the viewpoint of improving stability in suppressing separation and crystal precipitation, improving richness when applied, and suppressing stickiness, hydrogenated phospholipids containing 50% by mass or more of phosphatidylcholine and 10% by mass or more of acidic phospholipids relative to the phosphatidylcholine content are preferred. In this case, the phosphatidylcholine content is more preferably 60-80% by mass, even more preferably 65-75% by mass, and the acidic phospholipid content is more preferably 10-30% by mass relative to the phosphatidylcholine content.

[0013] Component (A) can be one or more types, and from the viewpoint of refining the emulsion particles of the oil-in-water emulsion cosmetic, improving stability by suppressing separation and crystal precipitation, improving the richness when applied, suppressing stickiness after application, and improving the moist feeling after application, the content is 1.2 to 5% by mass of the total composition, preferably 1.5 to 4.5% by mass, more preferably 1.8 to 4% by mass, and even more preferably 2.5 to 3.5% by mass.

[0014] Component (B) is a higher alcohol with 14 to 18 carbon atoms. The carbon number of component (B) is preferably 16 to 18, and more preferably 18, from the viewpoint of improving the stability of separation suppression, crystal precipitation suppression, and reducing stickiness after coating. Furthermore, component (B) may be either linear or branched, and may be either saturated or unsaturated. However, from the viewpoint of improving stability in suppressing separation and crystal precipitation, and suppressing stickiness after coating, it is preferable to include one or more selected from linear or branched saturated higher alcohols, and more preferably to include a linear saturated higher alcohol.

[0015] Specifically, examples include myristyl alcohol, cetyl alcohol, and stearyl alcohol. Component (B) can be used alone or in combination of two or more. From the viewpoints of improving the stability of separation inhibition and crystal precipitation inhibition, and suppressing stickiness after coating, it is preferable to use in combination of two or more, and more preferably to use in combination of cetyl alcohol and stearyl alcohol.

[0016] From the viewpoints of improving the stability of separation inhibition and crystal precipitation inhibition, improving the richness feeling during coating, suppressing stickiness after coating, and improving the moist feeling after coating, the content of component (B) is preferably 1 to 10% by mass in the total composition, more preferably 2 to 7% by mass, and still more preferably 2.5 to 3.8% by mass.

[0017] The oil-in-water type emulsion composition of the present invention can contain a higher alcohol other than component (B). From the viewpoints of suppressing stickiness after coating and improving the moist feeling after coating, it is preferable to contain a higher alcohol having 20 to 24 carbon atoms. Examples of the higher alcohol having 20 to 24 carbon atoms include arachidyl alcohol, behenyl alcohol, etc., and it is preferable to contain behenyl alcohol. The higher alcohol other than component (B) can be used alone or in combination of two or more. From the viewpoints of improving the stability of separation inhibition and crystal precipitation inhibition, improving the richness feeling during coating, suppressing stickiness after coating, and improving the moist feeling after coating, the content is preferably 0.1 to 5% by mass in the total composition, more preferably 0.3 to 3% by mass, still more preferably 0.5 to 2% by mass, and even more preferably 0.8 to 1.3% by mass.

[0018] In the present invention, from the viewpoints of improving the stability of separation inhibition and crystal precipitation inhibition, improving the richness feeling during coating, suppressing stickiness after coating, and improving the moist feeling after coating, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.1 to 10, more preferably 0.3 to 5, still more preferably 0.5 to 3, and even more preferably 0.8 to 1.5.

[0019] Component (C) is an oil agent that is liquid at 25°C and does not contain component (B). "Liquid" means having fluidity and includes paste-like substances. Examples of the oil agent of component (C) include hydrocarbon oils, ester oils, ether oils, silicone oils, higher fatty acids, etc.

[0020] More specifically, examples of hydrocarbon oils include squalane, liquid paraffin, liquid isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, etc. The hydrocarbon oil preferably contains one or more selected from squalane, liquid paraffin, and liquid isoparaffin, more preferably contains one or more selected from squalane, liquid paraffin, and liquid isoparaffin, even more preferably contains one or more selected from squalane and liquid isoparaffin, and even more preferably contains squalane.

[0021] Examples of ester oils include monoester oils, diester oils, triester oils, and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic acids or dicarboxylic acids having 2 to 24 carbon atoms. Specific examples include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, 2-hexyldecyl palmitate, butyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, alkyl (C12 - C15) benzoate, etc. The monoester oil preferably contains one or more selected from isononyl isononanoate, isotridecyl isononanoate, and octyldodecyl myristate, and more preferably contains one or more selected from isotridecyl isononanoate and octyldodecyl myristate.

[0022] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms, and di-fatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monomyristate monoisostearate, glyceryl di2-heptylundecanoate, di2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, and di-2-ethylhexyl sebacate. The diester oil preferably contains one or more selected from propylene glycol dicaprylate and neopentyl glycol dicaprate, and more preferably contains neopentyl glycol dicaprate.

[0023] Examples of triester oils include tri-fatty acid esters of polyhydric alcohols with a valency of 3 or higher. Specifically, these include glyceryl trimyristate, glyceryl triisopalmitate, glyceryl tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric acid)glycerin, glyceryl trioleate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, and vegetable oils such as olive oil, jojoba oil, macadamia nut oil, meadowfoam oil, castor oil, safflower oil, sunflower oil, avocado oil, canola oil, apricot kernel oil, rice germ oil, and rice bran oil. The triester oil preferably contains one or more selected from tri(caprylic / capric acid) glycerin, tri-2-ethylhexanoate glycerin, and vegetable oil; more preferably contains one or more selected from tri(caprylic / capric acid) glycerin, tri-2-ethylhexanoate glycerin, olive oil, and jojoba oil; even more preferably contains one or more selected from tri(caprylic / capric acid) glycerin and olive oil; and even more preferably contains olive oil. The ester oil preferably contains one or more selected from diester oils and triester oils, and more preferably contains triester oil.

[0024] Examples of tetraester oils include tetra fatty acid esters of polyhydric alcohols with four or more valencies, specifically tetra(behenic acid / benzoic acid / ethylhexanoic acid) pentaerythritol, tetraethylhexanoate pentaerythritol, tetraoctanoate pentaerythritol, and tetra-2-ethylhexanoate pentaerythritol.

[0025] Examples of ether oils include dialkyl ethers, specifically dihexyl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.

[0026] Examples of silicone oils include volatile and non-volatile linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), dimethylpolysiloxane (2cs), and dimethylpolysiloxane (6cs); branched siloxanes such as methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; cross-linked methylpolysiloxanes; network methylpolysiloxanes; dimethylpolysiloxanes; methyltrimethicone, dimethylcyclopolysiloxane, diphenylsiloxyphenyltrimethicone, and other methylphenylpolysiloxanes; and higher alcohol-modified organopolysiloxanes. The silicone oil preferably contains one or more selected from linear dimethylpolysiloxane and branched siloxane, more preferably contains linear dimethylpolysiloxane, and even more preferably contains non-volatile linear dimethylpolysiloxane.

[0027] Examples of high-grade fatty acids include oleic acid, isostearic acid, and undecylenic acid.

[0028] As for the oil component (C), from the viewpoint of making it easier to dissolve component (A) during manufacturing, improving stability in suppressing separation and crystal precipitation, improving richness when applied, improving moisturizing after application, and improving gloss after application, it is preferable to include one or more selected from hydrocarbon oils, ester oils, ether oils, and silicone oils, more preferably including hydrocarbon oils and ester oils, even more preferably including one or more selected from hydrocarbon oils, diester oils, and triester oils, even more preferably including one or more selected from hydrocarbon oils and triester oils, and especially preferably including one or two selected from squalane and olive oil.

[0029] Component (C) can be one or more types, and from the viewpoint of improving the richness when applied and improving the moist feeling after application, the content is preferably 1 to 50% by mass of the total composition, more preferably 3 to 45% by mass, more preferably 5 to 40% by mass, and even more preferably 15 to 30% by mass.

[0030] In the present invention, the mass ratio (A) / (C) of component (A) to component (C) is preferably 0.05 to 1, more preferably 0.07 to 0.5, even more preferably 0.09 to 0.28, and still more preferably 0.12 to 0.2, from the viewpoint of making component (A) easier to dissolve during manufacturing, improving stability in suppressing separation and crystal precipitation, improving richness when applied, suppressing stickiness after application, and improving moisturizing after application.

[0031] The oil-in-water emulsion composition of the present invention may further contain (D) cholesterols, which can improve stability in suppressing separation and crystal precipitation, improve richness during application, suppress stickiness after application, and improve moisturizing after application. Cholesterols include those commonly used in cosmetics, such as animal sterols like cholesterol, cholestanol, lanosterol, celegrosterol, dehydrocholesterol, and cobrostanol; plant sterols like phytosterol, β-sitosterol, stigmasterol, campesterol, and ergosterol; microbial sterols like mycosterol and thymosterol; and derivatives such as fatty acid esters of these sterols with fatty acids obtained by decomposing natural oils and fats such as oleic acid, palmitic acid, stearic acid, isostearic acid, and olive oil; alkyl (alkenyl) ether derivatives in which the hydrogen atoms of the hydroxyl group of sterols are substituted with alkyl or alkenyl groups; alkyl (alkenyl) esters substituted with acyl groups; and glycosides substituted with sugar residues.

[0032] Of these, from the viewpoint of making the emulsion particles finer, improving stability in suppressing separation and crystal precipitation, improving the richness when applied, and suppressing stickiness after application, it is preferable to include one or more selected from cholesterol, phytosterols, and fatty acid esters, more preferably to include one or more selected from cholesterol and phytosterols, and even more preferably to include cholesterol.

[0033] The cholesterol components (D) can be used individually or in combination of two or more types. From the viewpoint of improving stability in preventing separation and crystal precipitation, enhancing the richness during application, suppressing stickiness after application, and improving the moisturizing effect after application, the content is preferably 0.1 to 4% by mass of the total composition, more preferably 0.2 to 3% by mass, and even more preferably 0.4 to 1.3% by mass.

[0034] The oil-in-water emulsion composition of the present invention may further contain (E) polysaccharides, which can improve stability in suppressing separation and crystal precipitation, enhance the richness during application, and suppress stickiness after application. Polysaccharides are carbohydrates composed of 10 or more monosaccharides linked together, and include acidic polysaccharides, neutral polysaccharides, and basic polysaccharides. Examples of acidic polysaccharides include carrageenan, pectin, gum arabic, xanthan gum, gellan gum, agar, tragacanth gum, succinoglycan, heparin, hyaluronic acid, acetylated hyaloruronic acid, chondroitin sulfate, kerato sulfate, dermatan sulfate, and their salts. 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 salts can be any salt that is pharmaceutically or biodegradably acceptable, such as alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as magnesium salt and calcium salt; zinc salt; ammonium salt; and alkanolamine salts such as monoethanolamine salt. In particular, from the viewpoint of reducing skin irritation and improving non-stickiness during application, one or more salts selected from sodium salt, potassium salt, triethanolamine salt, and arginine salt are preferred, with sodium salt being more preferred.

[0035] Of these, acidic polysaccharides are preferred from the viewpoint of improving stability in suppressing separation and crystal precipitation, improving richness during application, and suppressing stickiness after application. More preferably, the mixture contains one or more selected from carrageenan, xanthan gum, succinoglycan, hyaluronic acid, hyaluronic acid salt, acetylated hyaluronic acid, and acetylated hyaluronic acid salt. Even more preferably, the mixture contains one or more selected from carrageenan, xanthan gum, hyaluronic acid, and hyaluronic acid salt, and even more preferably, xanthan gum.

[0036] The polysaccharide of component (E) can be used in combination of one or more types. From the viewpoint of improving stability in suppressing separation and crystal precipitation, and improving the richness when applied, the content is preferably 0.01 to 2% by mass of the total composition, more preferably 0.05 to 1% by mass, and even more preferably 0.1 to 0.5% by mass.

[0037] The oil-in-water emulsion composition of the present invention may further contain (F) a polyhydric alcohol, which can improve the richness during application, reduce stickiness after application, and improve the moisturizing effect after application. A polyhydric alcohol is a compound that has two or more hydroxyl groups in its molecule, and any of those commonly used in topical skin preparations will suffice. Examples of dihydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, butylene glycol, and propanediol. Examples of trihydric alcohols include glycerin and trimethylolpropane. Examples of tetrahydric alcohols include diglycerin and erythritol. Examples of pentahydric or higher polyhydric alcohols include polyglycerins such as triglycerin; sugars and sugar alcohols such as glucose, maltose, maltodose, sucrose, xylitol, sorbitol, malbitol, polyoxyethylene methyl glucoside, polyoxyethylene ethyl glucoside, and polyoxyethylene propylene glucoside.

[0038] As for the polyhydric alcohol of component (F), it is preferable that it contains 1,3-propanediol, from the viewpoint of improving the richness when applied, improving the moist feeling after application, and increasing viscosity. The content of 1,3-propanediol is preferably 5 to 20% by mass in the total composition, more preferably 6 to 15% by mass, and even more preferably 7 to 12% by mass, from the viewpoint of improving the richness when applied, improving the moist feeling after application, and increasing viscosity.

[0039] The polyhydric alcohol of component (F) can be used alone or in combination of two or more types. From the viewpoint of improving the richness when applied, suppressing stickiness after application, and improving the moist feeling after application, the content is preferably 1 to 30% by mass of the total composition, more preferably 4 to 25% by mass, and even more preferably 8 to 20% by mass.

[0040] In the present invention, the water content is preferably 15 to 90% by mass, more preferably 25 to 70% by mass, and even more preferably 35 to 55% by mass, from the viewpoint of efficiently dispersing emulsion particles and improving stability in suppressing separation and crystal precipitation in the base of the oil-in-water emulsion cosmetic composition.

[0041] In addition to the above components, the oil-in-water emulsion composition of the present invention may contain components commonly used in cosmetics, such as oil components other than components (B) and (C), surfactants other than component (A), water-soluble polymers other than component (E), antioxidants, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers other than component (F), cooling agents, and the like.

[0042] The oil-in-water emulsion composition of the present invention can be manufactured according to conventional methods. The viscosity of the oil-in-water emulsion composition of the present invention is preferably 10,000 to 100,000 mPa·s at 25°C, more preferably 15,000 to 75,000 mPa·s, even more preferably 20,000 to 50,000 mPa·s, and even more preferably 25,000 to 35,000 mPa·s, from the viewpoint of improving stability in suppressing separation and crystal precipitation, improving richness during application, and suppressing stickiness after application. In this invention, viscosity is measured using a Type B viscometer (Shibaura Systems Co., Ltd., VDA2 model) at a rotation speed of 6 rpm, a measurement time of 30 seconds, and a temperature of 25°C.

[0043] The oil-in-water emulsion composition of the present invention is suitable as an oil-in-water emulsion cosmetic and can be applied as a makeup cosmetic such as a makeup base, foundation, concealer, blush, eyeshadow, mascara, eyeliner, eyebrow product, overcoat, and lipstick; an ultraviolet protection cosmetic such as sunscreen lotion and sunscreen cream; and a skincare cosmetic such as skincare lotion, skincare cream, BB cream, and serum. Among these, skincare cosmetics are preferred, and skincare creams are more preferred. [Examples]

[0044] Examples 1-12, Comparative Examples 1-5 Oil-in-water emulsion cosmetics with the compositions shown in Tables 1 and 2 were prepared, and their appearance (viscosity), stability (separation, crystal precipitation), richness, non-stickiness, and moisturizing effect were evaluated. The results are also shown in Tables 1 and 2.

[0045] (Manufacturing method) All ingredients were heated and mixed to produce an oil-in-water emulsion cosmetic.

[0046] (Evaluation method) (1) Appearance (viscosity): The viscosity of the cosmetic product was measured immediately after manufacturing, and its appearance was evaluated according to the following criteria. Viscosity was measured using a Type B viscometer (Shibaura Systems Co., Ltd., Model VDA2) at a rotation speed of 6 rpm, a measurement time of 30 seconds, and a temperature of 25°C. Emulsion-like consistency: Viscosity less than 10,000 mPa·s. Creamy consistency: Viscosity of 10,000 mPa·s or higher.

[0047] (2) Stability (separation): Each oil-in-water emulsion cosmetic was placed in a glass bottle (ED-40, clear bottle, manufactured by Asai Glass Co., Ltd.) at a temperature of 60°C for 30 days, then left to stand in a constant temperature bath at 25°C for 1 day. Separation was observed visually and evaluated according to the following criteria. ◎: No separation is observed when the glass container is viewed from the side or from above. ○: When the glass container is observed from the side, no separation is visible, but when viewed from above, a few oil droplets are scattered on the surface. △: When the glass container is observed from the side, separation is present, but the separation is less than 1 mm. ×: When the glass container is observed from the side, separation is present, and the separation is 1 mm or more.

[0048] (3) Stability (crystal precipitation) Each oil-in-water emulsion cosmetic was placed in 80 mL glass bottles (ED-40, clear bottles, manufactured by Asai Glass Co., Ltd.), sealed, and left to stand in a 60°C constant temperature bath for 30 days. After that, it was left to stand in a 25°C constant temperature bath for 1 day. Crystal precipitation was observed visually and evaluated according to the following criteria. ◎: Observe the glass container from above; no crystal precipitation is observed. ○: When observing the glass container from above, a slight crystal precipitate can be seen on part of the surface. △: When observing the glass container from above, crystal precipitation is clearly visible on part of the surface. ×: When observing the glass container from above, crystals are deposited all over the surface.

[0049] (4) Richness: Five expert evaluators each took 0.04g of oil-in-water emulsion cosmetic on their finger and applied it to a 4 x 7cm area of ​​skin on the inside of their forearm. 2 The cream was applied in an amount the size of a small ball, and then spread by moving back and forth from the elbow to the wrist at a speed of once per second. The richness of the cream after spreading for 25 seconds was evaluated on the following 5-point scale. The results are shown as the average score of the 5 participants. Furthermore, "richness" refers to the feeling that when an oil-in-water emulsion cosmetic is spread on the skin, the oil-in-water emulsion composition feels firm at the beginning of spreading, but becomes rapidly softer as spreading continues. The change in resistance to the fingers while spreading is clearly felt, and one can sense that the oil-in-water emulsion composition is blending into the skin. 5; It has a very rich flavor. 4; It has a rich flavor. 3; It has a slightly rich flavor. 2; I don't really feel much richness. 1; I clearly don't perceive any richness or depth of flavor.

[0050] (5) Non-sticky: Five expert evaluators each took 0.04g of oil-in-water emulsion cosmetic on their finger and applied it to a 4 x 7cm area of ​​skin on the inside of their forearm. 2 The product was applied in an amount the size of a small circle, spread back and forth from the elbow to the wrist at a speed of once per second, and spread for 25 seconds. After that, the degree of stickiness when touching the skin was evaluated on the following 5-point scale. The results are shown as the average score of the 5 participants. 5; It's not sticky at all. 4. It's not sticky. 3; It's almost completely non-sticky. 2; It's slightly sticky. 1; It is clearly sticky.

[0051] (6) Moisturizing feel: Five expert evaluators each took 0.04g of oil-in-water emulsion cosmetic on their finger and applied it to a 4 x 7cm area of ​​skin on the inside of their forearm. 2 The product was applied in an amount the size of a small circle, spread back and forth from the elbow to the wrist at a speed of once per second, and spread for 25 seconds. After that, the moisturizing effect on the skin was evaluated on the following 5-point scale. The results are shown as the average score of the 5 participants. 5; It has a noticeably moisturizing feel. 4; It has a moist feel. 3; It has a slightly moist feel. 2; It doesn't feel very moisturizing. 1; It clearly lacks any moisturizing effect.

[0052] [Table 1]

[0053] [Table 2]

[0054] The following are examples of formulations (creams) of the present invention. All of them have the same effects as those of the examples.

[0055] Prescription Example 1 (Cream) (Ingredients) Content (mass%) Hydrogenated soybean phospholipids (Product name: PHOSPHOLIPID PCSH70, manufactured by Nippon Seika Co., Ltd.) 3.0 Cetostearyl alcohol (product name: Calcol 6850, manufactured by Kao Corporation) 3.0 Behenyl alcohol 1.0 Cholesterol (Product name: Cholesterol JSQI, manufactured by Nippon Seika Co., Ltd.) 0.8 Tri(caprylic / capric acid) glyceryl (Product name: Coconard MT, manufactured by Kao Corporation) 20.0 Sugar squalane (Product name: NIKKOL Sugar Squalane, manufactured by Nikko Chemicals Co., Ltd.) 8.0 Olive oil (product name: Cropure OL, manufactured by Croda Japan Co., Ltd.) 2.0 Jojoba oil (product name: refined jojoba oil, manufactured by Koei Kogyo Co., Ltd.) 0.5 Shea butter (product name: Cropure Shea Butter, manufactured by Croda Japan Co., Ltd.) 0.1 Mango seed oil (product name: Mango Butter, manufactured by Koei Kogyo Co., Ltd.) 0.1 1,3-Butylene glycol (Product name: High Sugar Cane-BG, manufactured by Higher Alcohol Industry Co., Ltd.) 7.0 1,3-Propanediol (Product name: 1,3-Propanediol, manufactured by Zhangjiagang Meijingrong Chemical Industry Co., Ltd.) 7.0 Xanthan gum (Product name: Nomucoat ZZ, manufactured by Nisshin Oillio Group) 0.2 Concentrated glycerin (product name: RG-Co-P, manufactured by NOF Corporation) 5.0 Disodium edetate 0.05 Phenoxyethanol 0.5 Potassium hydroxide 0.03 Rice fermentation liquid (product name: Horus Ginjo Extract AL, manufactured by Horus Co., Ltd.) 4.0 Angelica keiskei extract (product name: Angelica keiskei extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.5 Perilla extract (1) (Product name: Perilla extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.05 Geranium robertianum extract (product name: Princess Care, manufactured by Ichimaru Falcos Co., Ltd.) 0.2 Myrtle fruit extract (Product name: Myrtus communis fruit extract BG80, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.2 Green tea leaf extract (product name: WHITE TEA EX, manufactured by Hasegawa Fragrance Co., Ltd.) 0.2 Green tea leaf extract (product name: WaISM@<Uji Tea>, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.8 Geranium thunbergii extract (Product name: Geranium thunbergii extract BG-J, manufactured by Maruzen Pharmaceutical Co., Ltd.) 2.5 Sanguisorba officinalis extract (product name: Jiyu Extract-R, manufactured by Maruzen Pharmaceutical Co., Ltd.) 3.0 Royal jelly extract (Product name: Royal Jelly Extract, manufactured by Ichimaru Falcos) 0.03 Refined water residue Total 100

[0056] Prescription example 2 (cream) (Ingredients) Content (mass%) Hydrogenated soybean phospholipids (Product name: PHOSPHOLIPID PCSH70, manufactured by Nippon Seika Co., Ltd.) 3.0 Cetostearyl alcohol (Product name: Calcol 6850, manufactured by Kao Corporation) 3.0 Behenyl alcohol 1.0 cholesterol (Product name: Cholesterol JSQI, manufactured by Nippon Seika Co., Ltd.) 0.6 Macadamia oil (product name: refined macadamia oil, manufactured by NOF Corporation) 15.0 Meadowfoam oil (Product name: Meadowfoam Seed Oil, manufactured by Natural Plant Products) 15.0 Jojoba oil (product name: refined jojoba oil, manufactured by Koei Kogyo Co., Ltd.) 0.5 Shea butter (product name: Cropure Shea Butter, manufactured by Croda Japan Co., Ltd.) 0.1 Mango seed oil (product name: Mango Butter, manufactured by Koei Kogyo Co., Ltd.) 0.1 1,3-Propanediol (Product name: 1,3-Propanediol, manufactured by Zhangjiagang Meijingrong Chemical Industry Co., Ltd.) 20.0 Xanthan gum (Product name: Nomucoat ZZ, manufactured by Nisshin Oillio Group) 0.2 Concentrated glycerin (product name: RG-Co-P, manufactured by NOF Corporation) 5.0 Disodium edetate 0.05 Phenoxyethanol 0.5 Potassium hydroxide 0.02 Rice fermentation liquid (product name: Horus Ginjo Extract AL, manufactured by Horus Co.) 0.03 Angelica keiskei extract (product name: Angelica keiskei extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.05 Perilla extract (1) (Product name: Perilla extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.01 Geranium robertianum extract (product name: Princess Care, manufactured by Ichimaru Falcos Co., Ltd.) 0.03 Myrtle fruit extract (Product name: Myrtle fruit extract BG80 (for quasi-drug use) 0.05) Green tea leaf extract (product name: WHITE TEA EX, manufactured by Hasegawa Fragrance Co., Ltd.) 0.05 Green tea leaf extract (product name: WaISM@<Uji Tea>, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.05 Geranium thunbergii extract (Product name: Geranium thunbergii extract BG-J, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.05 Sanguisorba officinalis extract (product name: Jiyu Extract-R, manufactured by Maruzen Pharmaceutical Co., Ltd.) 0.05 Royal jelly extract (Product name: Royal Jelly Extract, manufactured by Ichimaru Falcos Co., Ltd.) 0.005 Refined water residue Total 100

Claims

1. The following components (A), (B), (C), (D), (E), and (F): (A) Phospholipids 1.2-5% by mass, (B) Higher alcohols with 14 to 18 carbon atoms, 1 to 10% by mass, (C) Liquid oil at 25°C, 10-50% by mass. (D) Cholesterols, (E) polysaccharide, (F) Polyhydric alcohol 1-30% by mass An oil-in-water emulsion composition containing, wherein component (F) contains 1,3-propanediol.

2. The oil-in-water emulsion composition according to claim 1, wherein the mass ratio (A) / (B) of component (A) to component (B) is 0.3 to 5.

3. The oil-in-water emulsion composition according to claim 1 or 2, wherein the mass ratio (A) / (C) of component (A) to component (C) is 0.05 to 0.

5.

4. The oil-in-water emulsion composition according to claim 1, wherein the content of component (B) is 2 to 4% by mass, the mass ratio of component (A) to component (C) (A) / (C) is 0.09 to 0.28, and the content of component (D) is 0.1 to 1.3% by mass.

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