Oil-in-water emulsified cosmetic

Abstract

To provide an oil-in-water emulsified cosmetic, which is a nanoemulsion capable of realizing both a moist feeling without stickiness and favorable skin affinity, while also exhibiting excellent emulsification stability with time.SOLUTION: An oil-in-water emulsified cosmetic contains components (A) to (E): (A) a hydrogenated lecithin component, (B) one or more components selected from phytosterol, cholesterol, and oryzanol, (C) a branched higher alcohol component, (D) a water-soluble polymer component, and (E) an anionic surfactant, wherein the cosmetic has an average particle diameter of 75 nm or more and less than 500 nm.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oil-in-water emulsion cosmetic, and more specifically to an oil-in-water emulsion cosmetic in the form of a nanoemulsion that has excellent emulsion stability over time while providing a moist feeling without stickiness and good compatibility with the skin. [Background technology]

[0002] Traditionally, moisturizing is a desired function of skin care products, but to achieve sufficient moisturizing effect, it is necessary to add a large amount of moisturizers and oils, which leads to stickiness and poor skin compatibility. Stickiness and poor skin compatibility not only cause discomfort after application, but can also significantly impair the feel of subsequent formulations. Therefore, a combination of sufficient moisturizing without stickiness and good skin compatibility has been sought for an attractive formulation.

[0003] One method for imparting a moist, non-sticky feel is an emulsification method using hydrogenated lecithin. Hydrogenated lecithin has a lower emulsifying power than common polyoxyethylene-based emulsifiers and polyglycerin-based emulsifiers, but has a high moisturizing power, and has been widely used as an emulsifier or emulsifier aid in oil-in-water emulsion cosmetics (Patent Document 1).

[0004] Emulsified cosmetics using hydrogenated lecithin are known to impart a moist feeling to the skin without stickiness, and for example, Patent Document 2 provides a composition that combines a moist feeling with good compatibility with the skin. However, although the composition of Patent Document 2 can provide a sufficient moist feeling, it does not achieve a skin compatibility that satisfies users, and there is a need to pursue even better compatibility with the skin.

[0005] One known method for improving skin compatibility is to reduce the average particle size. Patent Document 3 claims that reducing the average particle size to 8 nm to 100 nm can achieve both good skin compatibility and a moist feeling, but adding 2% or more of liquid oil to provide a sufficient moist feeling can impair stability and cause stickiness. Reducing the average particle size of an emulsion using hydrogenated lecithin could potentially improve skin compatibility, but a high oil content is also required to provide a moist feeling that satisfies the user.

[0006] When a large amount of oil is added to achieve a sufficient moisturizing effect, the difference in specific gravity between water and oil often leads to a condition called creaming. Creaming is a phenomenon in which oil floats and collects on the surface of an emulsion composition. It usually occurs due to differences in the densities of the continuous phase and the dispersed phase. In the case of an oil-in-water emulsion composition, where the density of the dispersed phase oil droplets is low, the oil droplets rise to the top and become concentrated. When the dispersed phase is concentrated due to creaming, the frequency of collisions between dispersed phases increases, which makes the dispersed phase more likely to aggregate and cause problems such as separation. Creaming can prevent emulsion cosmetics from fulfilling their intended functions or cause user dissatisfaction due to abnormal conditions, making it a problem that must be resolved. Known methods for eliminating creaming include reducing the average particle size of emulsion particles and increasing the viscosity of the continuous layer using water-soluble polymers (Non-Patent Document 1).

[0007] Water-soluble polymers are generally added to emulsions to adjust their viscosity and improve their stability, and can also impart a moist feeling, providing cosmetics with enhanced skin care benefits.

[0008] Water-soluble polymers are compounds that can thicken water through various mechanisms, and include natural, semi-synthetic, and synthetic polymers. All of them exhibit viscosity by hydrating with water. The hydration mechanism of water-soluble polymers involves hydration reactions with various water molecules, including those present in the continuous phase and those hydrated in surfactants and humectants. Regardless of the water-soluble polymer, when thickening occurs, water gathers around the water-soluble polymer and combines with the hydration water of the emulsified particles, thereby thickening (Non-Patent Document 2).

[0009] When a nanoemulsion is blended with a water-soluble polymer, the nanoemulsion often collapses. This is thought to occur when the water-soluble polymer causes dehydration at the interface, resulting in the aggregation of emulsified particles. This is particularly likely to occur when a surfactant with low hydration power, such as hydrogenated lecithin, is used. When the nanoemulsion collapses, it becomes significantly less compatible with the skin.

[0010] Based on the above, in order to achieve both a non-sticky moist feeling and unprecedented compatibility with the skin, it is desirable to incorporate a high amount of oil into a nanoemulsion using hydrogenated lecithin; however, it has been difficult to simultaneously incorporate a water-soluble polymer and ensure the stability of the nanoemulsion. [Prior art documents] [Non-patent literature]

[0011] [Non-Patent Document 1] J.Soc.Cosmet.Chem.Jpn.Special Review 44(3)199-207(2010) [Non-patent document 2] Horiuchi T. Physico-chemical properties of water-soluble polymers in aqueous solution. J Surface Finishing Soc Jpn. 2009; 60(12): 746-753. [Patent documents]

[0012] [Patent Document 1] Japanese Patent Application Publication No. 03-058919 [Patent Document 2] Japanese Patent Application Publication No. 2019-089741 [Patent Document 3] Japanese Patent Publication No. 2020-105077 Summary of the Invention [Problem to be solved by the invention]

[0013] The present invention has been made in view of the above-mentioned conventional techniques, and an object of the present invention is to provide an oil-in-water nanoemulsion cosmetic that has excellent emulsion stability over time while simultaneously providing a moist feeling without stickiness and good compatibility with the skin. [Means for solving the problem]

[0014] In order to achieve the above object, the present inventors have conducted extensive research and have found that The following ingredients (A) Hydrogenated lecithin (B) One of phytosterol, cholesterol, or oryzanol (C) Branched higher alcohol (D) Water-soluble polymer (E) Anionic surfactants An oil-in-water emulsion cosmetic having an average particle size of 75 nm or more and less than 500 nm The present inventors have found that the above problems can be solved by the above method, and have completed the present invention. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide an oil-in-water emulsion cosmetic that has a texture that is both non-sticky and moist and blends well with the skin, and that contains hydrogenated lecithin and a water-soluble polymer and has an average particle size of 75 nm or more and less than 500 nm. DETAILED DESCRIPTION OF THE INVENTION

[0016] The present invention will be described in more detail below. Unless otherwise noted, the percentages used for the following ingredients refer to mass percent. Furthermore, in the present invention, the term "nanoemulsion" refers to an emulsion in which the volume average diameter of emulsion particles is 75 nm or more and less than 500 nm.

[0017] The component (A) hydrogenated lecithin used in the present invention is a lecithin derivative obtained by hydrogenating lecithin, and is also called hydrogenated lecithin. Hydrogenated lecithin is a general term for natural phospholipids such as egg yolk lecithin and soybean lecithin, and lecithin in which the unsaturated carbon chains in the lecithin have been converted to saturated bonds by hydrogenation, and hydrogenated soybean lecithin, hydrogenated egg yolk lecithin, etc. can be used. The constituent components of lecithin are classified according to the structure of the polar group bonded to the phosphate group, and it is known that phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidic acid, etc. are the main components.

[0018] The amount of component (A) hydrogenated lecithin blended is not particularly limited, but is preferably 0.08 to 2.5%, more preferably 0.15 to 1.5%. Within this range, the emulsion remains in a nanoemulsion state while maintaining good emulsion stability over time, and in combination with component (D), a good moist feeling is achieved. In the present invention, component (A) may be used alone or in an appropriate combination of two or more types.

[0019] The component (B) phytosterol used in the present invention is a substance having a sterol skeleton, a vegetable oil generally called a plant sterol, and a mixture of cyclic alcohols. Any substance generally classified as a plant sterol can be used, and preferred examples include those containing campesterol, sitosterol, stigmastanol, etc. as constituent components.

[0020] The component (B) cholesterol used in the present invention is a substance having a sterol skeleton, commonly called zoosterol, and is a compound based on a steroid skeleton. It is generally purified from natural products, and cholesterol purified from any natural product can be used in the present invention.

[0021] Oryzanol, component (B) used in the present invention, is a component contained in rice bran oil and is a mixture of esters of ferulic acid and triterpene alcohols. Rice oryzanol, extracted from rice bran, is primarily composed of four components and is widely used in the food, cosmetics, and pharmaceutical industries as an antioxidant and central nervous system stimulant. It is a tasteless, odorless, pale yellow powder with high thermal stability, which is said to exhibit excellent antioxidant properties. As a plant sterol, oryzanol has the effects of improving blood circulation, reducing cholesterol, and preventing the deterioration of brain function. Oryzanol can be incorporated into cosmetics as a skin conditioning agent, but it is poorly soluble in ethanol and water.

[0022] The amount of component (B) is not particularly limited, but is preferably 0.005 to 1.6%, more preferably 0.008 to 1%. Within this range, the emulsion stability over time is good when combined with component (D). In the present invention, component (B) may be used alone or in appropriate combination of two or more types.

[0023] The mass ratio of components (A) to (B) is preferably 95:5 to 60:40, more preferably 90:10 to 80:20. Within this range, the emulsion remains in a nanoemulsion state and has good emulsion stability over time.

[0024] The branched higher alcohol (component (C)) used in the present invention is a monohydric alcohol having 6 or more carbon atoms and having at least one branch in the hydrocarbon portion. Specific examples include hexyldecanol, octyldodecanol, decyltetradecanol, oleyl alcohol, and isostearyl alcohol. Among these, those with 16 to 20 carbon atoms are preferred. This carbon number is expected to further stabilize the nanoemulsion.

[0025] The blending amount of component (C), the branched higher alcohol, is not particularly limited, but is preferably 0.1 to 6%, more preferably 0.2 to 4%. Within this range, it is expected that the nanoemulsion will be more stabilized when combined with component (E). In the present invention, component (C) may be used alone or in an appropriate combination of two or more types.

[0026] The water-soluble polymer (component (D)) used in the present invention is a molecule with a large molecular weight that dissolves, disperses, and gels in water. When dissolved in water, it forms a hydrogel that encloses a large amount of water around the molecule, significantly increasing the viscosity of the aqueous solution. Water-soluble polymers can be natural, semi-synthetic, or synthetic. Natural water-soluble polymers include guar gum and carrageenan obtained from plants, xanthan gum and hyaluronic acid obtained from microorganisms, and gelatin and collagen obtained from animals. Semi-synthetic water-soluble polymers include cellulose-based polymers such as methylcellulose, ethylcellulose, and hydroxyethylcellulose, starch-based polymers such as soluble starch, and alginic acid-based polymers such as alginates. Synthetic water-soluble polymers include polyvinyl alcohol, carboxyvinyl polymer, sodium polyacrylate, polyethylene glycol, acrylic acid / alkyl methacrylate copolymer, polyacrylic amide, sodium acrylate / sodium acryloyldimethyltaurate copolymer, polyacrylic amide, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, and (ammonium acryloyldimethyltaurate / VP) copolymer. Inorganic water-soluble polymers include bentonite and laponite. Particularly preferred are carboxyvinyl polymer, sodium acrylate / sodium acryloyldimethyltaurate copolymer, polyacrylic amide, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, sclerotium gum, acrylic acid / alkyl methacrylate copolymer, (ammonium acryloyldimethyltaurate / VP) copolymer, and hydrophobized hydroxypropyl methylcellulose.

[0027] The amount of component (D) water-soluble polymer blended is not particularly limited, but is preferably 0.01% to 5% pure, more preferably 0.03% to 2%, of the total amount of the cosmetic. Within this range, a good moist feeling is achieved, and in combination with component (B), emulsion stability over time is good. In the present invention, component (D) may be used alone or in combination of two or more types.

[0028] The anionic surfactant (E) used in the present invention is not particularly limited, and examples thereof include fatty acid salts derived from fatty acids having 12 to 24 carbon atoms, such as sodium laurate, potassium palmitate, and arginine stearate; alkyl sulfate ester salts, such as sodium lauryl sulfate and potassium lauryl sulfate; alkyl ether sulfate ester salts, such as polyoxyethylene triethanolamine lauryl sulfate; N-acyl sarcosine salts, such as sodium lauroyl sarcosine; fatty acid amide sulfonates, such as sodium N-stearoyl-N-methyl taurate and sodium N-myristoyl-N-methyl taurate; and potassium cetyl phosphate. sodium; polyoxyethylene alkyl ether phosphates such as sodium polyoxyethylene oleyl ether phosphate and sodium polyoxyethylene stearyl ether phosphate; long-chain sulfosuccinates such as sodium di-2-ethylhexyl sulfosuccinate; long-chain N-acyl glutamates such as sodium N-lauroyl glutamate, sodium N-stearoyl-L-glutamate, arginine N-stearoyl-L-glutamate, sodium N-stearoyl glutamate, and sodium N-myristoyl-L-glutamate; and diacyl glutamic acid lysine salts. Particularly preferred are sodium dilauroyl glutamate lysine sodium solution, potassium cetyl phosphate, potassium N-cocoyl acyl-L-glutamate, sodium N-stearoyl-L-glutamate, and sodium N-cocoyl acyl-L-glutamate solution.

[0029] The amount of component (E) anionic surfactant blended is not particularly limited, but is preferably 0.002% to 1.5%, more preferably 0.005% to 1.0%. Within this range, a nanoemulsion can be maintained when combined with component (C). In the present invention, component (E) may be used alone or in combination of two or more types.

[0030] The liquid oil used in the present invention may be any oil that is liquid at room temperature (20°C) and is normally used in cosmetics, and is not particularly limited, regardless of whether it is volatile or non-volatile, synthetic oil, vegetable oil, animal oil, etc. In addition to the branched higher alcohol component (C), for example, hydrocarbon oils include mineral oil, squalane, undecane, tridecane, isododecane, isodecane, isohexadecane, polybutene, polyisobutylene, hydrogenated polyisobutene, polydecene, hydrogenated polydecene, etc., silicone oils include dimethicone, cyclopentasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclopentasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethylisobutylene, octa ... Examples of ester oils include cetyl ethylhexanoate, triethylhexanoin, cetearyl ethylhexanoate, isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate, isopropyl isostearate, ethylhexyl stearate, hexyl laurate, isodecyl neopentanoate, isostearyl neopentanoate, octyldodecyl neopentanoate, isononyl isononanoate, isotridecyl isononanoate, and ethylhexyl isononanoate. Alternatively, the liquid oil may be derived from a plant, such as sugar squalane, olive fruit oil, sunflower seed oil, jojoba seed oil, almond oil, macadamia seed oil, castor oil, hazelnut seed oil, palm oil, millet seed oil, argania spinosa kernel oil, avocado oil, coconut oil, corn oil, canola oil, soybean oil, etc. One or more liquid oils can be freely selected depending on the purpose, such as a barrier function to protect the skin from external factors, a moisturizing effect for a pack, or an effect to suppress stickiness and greasiness of the skin.

[0031] In addition to the essential components described above, the composition of the present invention can also contain, as needed, ingredients commonly used in cosmetics, etc., as long as they do not impair the effects of the present invention. For example, additives such as moisturizers, oils other than components (B) and (C), powders, film-forming agents, surfactants other than components (A) and (E), oil-soluble gelling agents, organically modified clay minerals, fragrances, disinfectants, preservatives, antioxidants, pH adjusters, chelating agents, UV absorbers, dyes, anti-inflammatory agents, antioxidants, cooling agents, cosmetic ingredients, herbal extracts, and vitamins can be appropriately added. When these ingredients are added, the blending ratio can be appropriately selected depending on the type and purpose, and one ingredient may be used alone, or two or more ingredients may be used in appropriate combination.

[0032] The cosmetic composition of the present invention can be formulated into various dosage forms by combining it with other ingredients. Specifically, it can be used as a lotion, emulsion, cream, serum, massage cosmetic, pack cosmetic, hand cream, body lotion, body cream, etc. Methods of use include application to hands, fingers, or cotton, impregnation of nonwoven fabric, or aerosolization using a propellant.

[0033] The average particle size of the oil-in-water emulsion cosmetic of the present invention is preferably 75 nm or more and less than 500 nm, and more preferably 80 nm or more and less than 200 nm, from the viewpoints of, for example, good compatibility with the skin and emulsion stability over time.

[0034] In the present invention, the "average particle size" of emulsified particles means the volume particle size. In the present invention, the average particle size of emulsified particles was measured by diluting each sample with an appropriate amount of water and using an SALD-7500 nano (manufactured by Shimadzu Corporation).

[0035] The composition of the present invention can be produced by any method, but is not limited to the following method. (i) Heat both the oil and water phases to 75°C to dissolve. (ii) The water phase is added to the oil phase and emulsified. (iii) The resulting emulsion is subjected to high-pressure treatment using Nanovator (Yoshida Kikai Kogyo Co., Ltd.). (iV) After the high-pressure treatment, a water-soluble polymer is added to thicken the composition, thereby obtaining a composition. Note that the examples were prepared using this manufacturing method except for Comparative Example 1, which was not subjected to high-pressure treatment. [Example]

[0036] The present invention will be further explained below with reference to examples. However, these examples do not limit the present invention in any way. In addition, the formulations of oil-in-water emulsion cosmetics are shown in the examples and comparative examples in the tables.

[0037] <Non-sticky> The evaluation was carried out by 10 expert panelists, women in their 20s to 40s who had received training in sensory evaluation. The expert panelists evaluated the stickiness of each sample when applied to the skin. A four-point rating was conducted using the evaluation method below, and the total score was calculated and judged according to the four-point rating criteria below. [Method for evaluating stickiness] (Score): (Rating) 4 points: Not sticky 3 points: Almost no stickiness 2 points: slightly sticky 1 point: Very sticky 4-level evaluation criteria (Judgment): (Total score) ◎: 35 points or more ○: 30 points or more but less than 35 points △: 25 points or more but less than 30 points ×: Less than 25 points

[0038] <Moisturizing feeling> The moisture content of the stratum corneum of each sample was measured. 《Creating rough skin》 The test was conducted on 10 subjects. The subjects placed a cotton ball soaked in 10ml of 30% sodium laureth sulfate solution on the measurement site on the inside of their left and right forearms for 5 minutes, then rubbed the measurement site with the cotton ball 50 times and rinsed it off. This process was repeated twice to create rough skin. 《Acclimatization 1》 The subjects were allowed to rest for 15 minutes in a room maintained at a temperature of 22°C and humidity of 55% to allow for acclimation. Measurement 1 A 3cm x 3cm area was marked on the inside of each forearm, and the moisture content of the stratum corneum (W1) before application was measured using a SKICON-200EX-USB (manufactured by Yayoi Co., Ltd.) Measurements were taken at nine points within the marked area, and the average of these measurements was taken as W1. Coating 0.1 g of the sample was applied to the marked area. 《Acclimatization 2》 One day after application, the subjects washed the inside of their left and right forearms, wiped off the moisture, and rested for 15 minutes in a room adjusted to a temperature of 22°C and humidity of 55% to allow for acclimatization. Measurement 2 The moisture content of the stratum corneum (W2) in the marked area was measured the day after application of the preparation using a SKICON-200EX-USB (manufactured by Yayoi Co., Ltd.) Measurements were taken at nine points in the marked area, and the average of these measurements was taken as W2. "judgement" The rate of change in stratum corneum moisture content between the day after application and before application was calculated using formula 1, and the average of the calculated values ​​was evaluated as follows.

number

[0039] <Good compatibility with skin> The evaluation was carried out by 10 expert panelists, women in their 20s to 40s who had received training in sensory evaluation. The expert panelists evaluated each sample for compatibility with the skin when applied. A four-point rating was conducted using the following evaluation method, and the total score was calculated and judged according to the following four-point rating criteria. [Skin compatibility evaluation method] (Score): (Rating) 4 points: Blends well with skin 3 points: Fairly good skin compatibility 2 points: Does not blend well with the skin 1 point: Does not blend well with the skin 4-level evaluation criteria (Judgment): (Total score) ◎: 35 points or more ○: 30 points or more but less than 35 points △: 25 points or more but less than 30 points ×: Less than 25 points

[0040] <Emulsion stability over time> Each sample was stored at 60°C for 2 weeks, and the change in appearance was visually observed and judged according to the following three-level judging criteria. Three-level evaluation criteria (Judgment): (Evaluation result) ◎Very good: No change after 2 weeks, uniform Good: No change for 1 week, but creaming is observed within 2 weeks × Poor: Creaming observed within 1 week

[0041] <Average particle size> To determine whether the nanoemulsion could be maintained, the average particle size was measured. If the nanoemulsion aggregates, the average particle size increases. The average particle size of the emulsified particles was measured by diluting each sample 10 times with water immediately after preparation using an SALD-7500nano (manufactured by Shimadzu Corporation) and rated according to the following four-level rating criteria. Measurement conditions: Flow cell ◎: Average particle size is 75nm or more and less than 200nm 〇: Average particle size is 200nm or more and less than 500nm ×: Average particle size is 500 nm or more

[0042] [Table 1]

[0043] [Table 2]

[0044] [Table 3]

[0045] As can be seen from Tables 1 to 3, in Examples 1 to 19, which contained components (A) to (E) of the present invention, samples were obtained that exhibited good texture, moisturizing, and non-stickiness, and also had good emulsion stability over time and average particle size. In Comparative Example 1, samples with particle sizes larger than those of the nanoemulsion in Example 1 were significantly inferior in terms of skin compatibility and non-stickiness. In Comparative Example 2, preparation was impossible when component (A) was omitted from Example 1. In Comparative Example 3, when component (A) was replaced with lysolecithin in Example 1, the skin compatibility and moisturizing feeling were inferior. In Comparative Example 4, when component (B) was omitted from Example 1, the emulsion stability over time was inferior. In Comparative Example 5, when component (B) was replaced with a phytosterol derivative in Example 1, the emulsion stability over time was inferior, and the nanoemulsion collapsed. In Comparative Example 6, when component (C) was omitted from Example 1, the nanoemulsion collapsed, resulting in inferior skin compatibility and moisturizing feeling. In Comparative Example 7, when component (C) was replaced with a branched fatty acid from Example 1, skin compatibility was inferior and the nanoemulsion collapsed as in Comparative Example 5. In Comparative Example 8, when component (D) was omitted from Example 1, moisturizing feeling and emulsion stability over time were inferior. In Comparative Example 9, when component (E) was omitted from Example 1, the nanoemulsion collapsed, resulting in inferior skin compatibility. In Comparative Examples 10 and 11, when component (E) was replaced with a nonionic surfactant from Example 1, the nanoemulsion collapsed, resulting in inferior skin compatibility and less stickiness. From the above, it can be seen that components (A) to (E) are essential for the present invention.

[0046] Oil-in-water emulsion cosmetics having the following formulations were prepared in a conventional manner. It was confirmed that the effects of the present invention were achieved in all of the formulations.

[0047] <Formulation example 1: Emulsion> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Cholesterol 0.06% Sucrose fatty acid ester 0.2% Decyltetradecanol 2% Jojoba oil 4% Glyceryl triisostearate 1% Squalane 3% Cetyl alcohol 2% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Methylgluceth-10 2% Sodium N-stearoyl-L-glutamate 0.1% Preservatives (appropriate amount) Sodium acrylate-sodium acryloyldimethyltaurate copolymer 0.4% Total 100%

[0048] <Formulation example 2: Cream> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Phytosterols 0.006% Oleyl alcohol 2% Cetyl 2-ethylhexanoate 5% Dilinoleic acid di(phytosteryl / isostearyl / cetyl / stearyl / behenyl) 2% Meadowfoam oil 2% Beeswax 2% Behenyl alcohol 3% Polyglyceryl monostearate 0.5% Lipophilic Glyceryl Monostearate 1% Stearyl glycyrrhetinate 0.05% Liquid isoparaffin 4% Dimethicone 2% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Sorbitol solution 3% Methylgluceth-20 2% Potassium cetyl phosphate 0.1% Preservatives (appropriate amount) (Hydroxyethyl acrylate / Sodium acryloyldimethyl taurate) copolymer 0.2% Carboxyvinyl polymer 0.1% Potassium hydroxide 0.05% Total 100%

[0049] <Formulation example 3: All-in-one gel> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Phytosterols 0.06% Isostearyl alcohol 2% Dimethicone 5% Squalane 2% Hydrogenated rapeseed oil alcohol 2% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% N-coconut oil fatty acid acyl-L-sodium glutamate solution 0.1% Preservatives (appropriate amount) Sclerotium Gum 0.1% Carboxyvinyl polymer 0.2% Potassium hydroxide 0.08% Total 100%

[0050] <Formulation example 4: Beauty serum> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Phytosterols 0.06% Isostearyl alcohol 2% Light liquid isoparaffin 1% Jojoba oil 5% Phytosteryl 2-octyldodecyl N-lauroyl-L-glutamate 1% Behenyl alcohol 2% Ceramide 3 0.1% Tocopherol 0.05% Ubiquinone 0.001% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Betaine 1% Potassium N-cocoyl-L-glutamate 0.1% Preservatives (appropriate amount) Acrylic acid / alkyl methacrylate copolymer 0.1% Potassium hydroxide 0.05% Tremella fuciformis polysaccharide 0.1% Tranexamic acid 0.1% Sodium hyaluronate 0.01% Hibiscus flower extract 0.01% Comfrey extract 0.01% Hydrolyzed Hyaluronic Acid 0.01% Hydrolyzed elastin 0.01% Hydrolyzed Soy Protein 0.01% Job's Tears Seed Extract 0.01% Lily extract 0.01% Tea extract 0.01% Cape gooseberry extract 0.01% Licorice extract 0.01% Evening primrose extract 0.01% Rosehip extract 0.01% Chamomile extract 0.01% Black carrot extract 0.01% Tabebuia impetiginosa bark extract 0.01% Silk tree extract 0.01% Terminalia extract 0.01% Total 100%

[0051] <Formulation example 5: Beauty serum> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Cholesterol 0.06% Decyltetradecanol 2% Jojoba oil 4% Glyceryl triisostearate 1% Squalane 2% Cetyl alcohol 2% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Diglycerin 1% Niacinamide 5% L-Ascorbic Acid 2-Glucoside 0.1% Sodium N-stearoyl-L-glutamate 0.1% Preservatives (appropriate amount) Sodium acrylate-sodium acryloyldimethyltaurate copolymer 0.3% Total 100%

[0052] <Formulation example 6: Makeup base> Ingredients Amount (oil phase) Hydrogenated soybean phospholipids 0.54% Phytosterols 0.06% Isostearyl alcohol 2% Jojoba oil 5% Liquid isoparaffin 2% Behenyl alcohol 1.5% Sorbitan sesquioleate 0.5% Titanium dioxide 1% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Dipropylene glycol 2% Potassium N-cocoyl-L-glutamate 0.1% Preservatives (appropriate amount) Acrylic acid / alkyl methacrylate copolymer 0.1% Potassium hydroxide 0.05% Total 100%

[0053] <Formulation example 5: Liquid foundation> Ingredients Amount (oil phase) Hydrogenated egg yolk phospholipids 0.54% Cholesterol 0.06% Hexyldecanol 2% Jojoba oil 5% Squalane 2% Behenyl alcohol 2% Decamethylcyclopentasiloxane 3% Polyoxyethylene hydrogenated castor oil 0.5% Hydrogen dimethicone, aluminum hydroxide surface-treated titanium dioxide 4% Triethoxycaprylylsilane-treated zinc oxide 4% Iron oxide 0.3% (aqueous phase) water residue 1,3-butylene glycol 10% Glycerin 5% Xanthan gum 0.05% Potassium cetyl phosphate 0.1% Preservatives (appropriate amount) Hydrophobized hydroxypropyl methylcellulose 0.1% (Acryloyldimethyltaurate ammonium / VP) copolymer 0.25% Total 100%

Claims

1. The following components (A) to (E): Component (A) Hydrogenated lecithin Component (B) One or more selected from phytosterol, cholesterol, and oryzanol Component (C) Branched Higher Alcohol Component (D) Water-soluble polymer Component (E) Anionic Surfactant and an oil-in-water emulsion cosmetic having an average particle size of 75 nm or more and less than 500 nm.

2. 2. The cosmetic composition according to claim 1, wherein the liquid oil containing component (C) is present in an amount of 3% or more.

3. 3. The cosmetic composition according to claim 1, wherein the component (C) is one or more branched higher alcohols selected from the group consisting of hexyldecanol, octyldodecanol, decyltetradecanol, oleyl alcohol, and isostearyl alcohol.

4. 3. The cosmetic composition according to claim 1, wherein the component (D) is one or more water-soluble polymers selected from the group consisting of carboxyvinyl polymers, sodium acrylate-sodium acryloyldimethyltaurate copolymers, polyacrylic acid amides, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymers, sclerotium gum, acrylic acid-alkyl methacrylate copolymers, (ammonium acryloyldimethyltaurate / VP) copolymers, and hydrophobized hydroxypropyl methylcellulose.

5. 3. The cosmetic composition according to claim 1, wherein the component (E) is one or more anionic surfactants selected from the group consisting of sodium dilauramidoglutamide lysine solution, potassium cetyl phosphate, potassium N-cocoyl-L-glutamate, sodium N-stearoyl-L-glutamate, and sodium N-cocoyl-L-glutamate solution.

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