Oil-in-water type emulsified cosmetic composition

An oil-in-water emulsion cosmetic composition using nonionic surfactants, amino acids, and natural oils achieves superior stability and longevity by minimizing petroleum-derived ingredients, addressing the need for sustainable cosmetics.

JP2025141335APending Publication Date: 2025-09-29ASANUMA
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Patent Information

Application Number
JP2024041221
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-15
Publication Date
2025-09-29

AI Technical Summary

Technical Problem

Existing cosmetic compositions for eyelashes rely heavily on petroleum-derived ingredients, which compromise stability, smoothness, and cosmetic longevity, despite the growing demand for sustainable, naturally derived ingredients.

Method used

An oil-in-water emulsion cosmetic composition comprising nonionic surfactants, basic amino acids, fatty acids, polysaccharides, and natural oils, achieving a natural origin index of 90% or more, with specific components like glycerin fatty acid esters and polyglycerin fatty acid esters enhancing stability and smoothness.

Benefits of technology

The composition provides excellent stability, smoothness, and cosmetic longevity using primarily naturally derived ingredients, reducing petroleum-derived materials while maintaining high performance.

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Abstract

To provide an oil-in-water type emulsified cosmetic composition that exhibits excellent stability, smooth texture, and makeup durability while reducing the use of petroleum-derived materials.SOLUTION: An oil-in-water type emulsified cosmetic composition comprises (A) at least one nonionic surfactant in an amount of 0.1-10.0 wt.%, (B) a basic amino acid, (C) a fatty acid, (D) a polysaccharide in an amount of 0.1-10.0 wt.%, (E) a powder in an amount of 0.1-60.0 wt.%, and (F) an oily component in an amount of 1.0-30.0 wt.%.SELECTED DRAWING: None
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Description

[Technical Field]

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

[0002] In recent years, there has been growing attention on activities aimed at creating a sustainable society, and it is expected that these activities will continue into the future. As part of these activities, the cosmetics industry is also seeing a growing need to use "naturally derived ingredients" and "highly biodegradable ingredients" and to be environmentally conscious. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-232914 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 relates to a cosmetic for eyelashes, and discloses a cosmetic for eyelashes that is particularly excellent in adhesion, long-lash effect, curling effect, quick drying, easy to cleanse with lukewarm water, and has good storage stability. However, the cosmetic for eyelashes disclosed in Patent Document 1 uses petroleum-derived ingredients such as paraffin wax and triethanolamine. Therefore, it has been desired to realize a cosmetic that has excellent stability, smoothness, and makeup wear time, using mainly natural ingredients. Therefore, an object of the present invention is to provide an oil-in-water emulsion cosmetic composition that uses reduced petroleum-derived raw materials and has excellent stability, smoothness, and cosmetic wear. [Means for solving the problem]

[0005] The present inventors have conducted extensive research into oil-in-water emulsion cosmetic compositions that use reduced amounts of petroleum-derived ingredients and have excellent stability, smoothness, and cosmetic longevity. As a result, they have surprisingly found that by blending components (A) to (F), it is possible to obtain oil-in-water emulsion cosmetic compositions that have excellent stability, smoothness, and cosmetic longevity. Naturally derived ingredients, particularly oily ingredients, are often inferior to petroleum-derived ingredients in terms of stability, smoothness, and cosmetic longevity. By adopting the composition of the present invention, the present inventors have succeeded in obtaining an oil-in-water emulsion cosmetic composition that exhibits excellent stability, smoothness, and cosmetic longevity, even when using primarily naturally derived ingredients. The present invention is based on this finding. Thus, the present invention relates to the following: [1] (A) 0.1 to 10.0% by weight of at least one nonionic surfactant (B) Basic amino acids (C) Fatty acid (D) polysaccharide 0.1-10.0% by weight, (E) 0.1 to 60.0% by weight of powder, and (F) Oily component 1.0~30.0% by weight An oil-in-water emulsion cosmetic composition comprising: [2] The oil-in-water emulsion cosmetic composition according to [1], wherein the (B) basic amino acid is L-arginine, and the (C) fatty acid is a saturated fatty acid having 12 to 22 carbon atoms. [3] The oil-in-water emulsion cosmetic composition according to [1] or [2], which has a natural origin index of 90% or more as calculated according to ISO 16128 as an oil-in-water emulsion cosmetic composition. [4] The oil-in-water emulsion cosmetic composition according to any one of [1] to [3], comprising, as the nonionic surfactant (A), a glycerin fatty acid ester having 12 to 22 carbon atoms and / or a polyglycerin fatty acid ester having 12 to 22 carbon atoms. [5] The oil-in-water emulsion cosmetic composition according to any one of [1] to [4], which is a cosmetic for eyelashes. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide an oil-in-water emulsion cosmetic composition that uses less petroleum-derived raw materials and has excellent stability, smoothness, and cosmetic long-lasting properties. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention will be described in detail below. In this specification, unless otherwise specified, the expression "a to b" for numerical values ​​a and b is equivalent to "a or more and b or less." In other words, the expression "a to b" includes the numerical values ​​a and b at both ends. In such an expression, when a unit is added only to the numerical value b, the unit is also applied to the numerical value a.

[0008] <Nonionic surfactant; ingredient A> The composition of the present invention contains a nonionic surfactant. The nonionic surfactant is added to the composition of the present invention for the purpose of imparting stability to the composition. The nonionic surfactant is not particularly limited as long as it does not impair the effects of the present invention. Examples of nonionic surfactants that can be used include polyglycerin fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene hydrogenated castor oils, and the like, either singly or in combination. Glycerin fatty acid esters and / or polyglycerin fatty acid esters are preferably used as the nonionic surfactant. The fatty acid moieties of the glycerin fatty acid esters and / or polyglycerin fatty acid esters are not particularly limited as to whether they are saturated or unsaturated, whether they are branched, and the like. Examples of glycerin fatty acid esters or polyglycerin fatty acid esters include self-emulsifying glyceryl monostearate, glyceryl myristate, polyglyceryl monoisostearate, polyglyceryl monolaurate, condensed polyglyceryl ricinoleate, polyglyceryl diisostearate, decaglyceryl decaisostearate, polyglyceryl decaoleate, and diglyceryl triisostearate. The self-emulsifying polyglyceryl monostearate preferably has a glycerin polymerization number of 10. The polyglyceryl monolaurate preferably has a glycerin polymerization number of 6. As the glycerin fatty acid ester and / or polyglycerin fatty acid ester, it is preferable to use a glycerin fatty acid ester having 12 to 22 carbon atoms and / or a polyglycerin fatty acid ester having 12 to 22 carbon atoms, it is more preferable to use a glycerin fatty acid ester having 14 to 22 carbon atoms and / or a polyglycerin fatty acid ester having 14 to 22 carbon atoms, and it is most preferable to use a glycerin fatty acid ester having 16 to 20 carbon atoms and / or a polyglycerin fatty acid ester having 16 to 20 carbon atoms. By using a glycerin fatty acid ester having 16 to 20 carbon atoms and a polyglycerin fatty acid ester having 16 to 20 carbon atoms, the stability and smoothness of the composition of the present invention are further improved.

[0009] The nonionic surfactant may have an HLB value of, for example, 2.0 to 18.0. Two types of nonionic surfactants with different HLB values ​​may also be used.

[0010] The content of component A based on the total weight of the composition is not particularly limited as long as the effects of the present invention are obtained, but may be 0.1 to 10 wt %, 1.0 to 9.0 wt %, 2.0 to 8.0 wt %, 3.0 to 7.5 wt %, or 4.0 to 7.0 wt %. When both a glycerin fatty acid ester having 12 to 22 carbon atoms (more preferably 18 to 22 carbon atoms) (hereinafter sometimes referred to as Component A1) and a polyglycerin fatty acid ester having 12 to 22 carbon atoms (more preferably 18 to 22 carbon atoms) (hereinafter sometimes referred to as Component A2) are contained, the content of Component A1 is not particularly limited as long as the effects of the present invention are obtained, but can be 1.0 to 9.0 wt%, 2.0 to 8.0 wt%, 3.0 to 6.0 wt%, or 3.5 to 5.0 wt%. The content of Component A2 is not particularly limited as long as the effects of the present invention are obtained, but can be 0.5 to 6.0 wt%, 1.0 to 5.0 wt%, or 1.5 to 3.0 wt%. When both component A1 and component A2 are contained, the ratio of the content of component A1 based on the total amount of the composition to the content of component A2 based on the total amount of the composition (content of component A1 / content of component A2) can be, for example, 1.0 to 5.0, or 1.5 to 4.0.

[0011] In the composition of the present invention, the natural origin index calculated according to ISO 16128 for the nonionic surfactants as a whole is preferably 0.90 or more, more preferably 0.92 or more, even more preferably 0.94 or more, even more preferably 0.95 or more, even more preferably 0.97 or more, and most preferably 0.99 or more. "The natural origin index calculated according to ISO 16128 is 0.90 or more for the nonionic surfactants as a whole" means that the natural origin index calculated for the nonionic surfactants "as a whole" contained in the composition of the present invention, rather than for each individual nonionic surfactant, is 0.90 or more. When multiple nonionic surfactants are contained, the natural origin index of all the nonionic surfactants contained is preferably 0.90 or more, more preferably 0.92 or more, even more preferably 0.94 or more, even more preferably 0.95 or more, even more preferably 0.97 or more, and most preferably 0.99 or more. The composition of the present invention may contain surfactants other than component A, such as cationic surfactants, as long as the effects of the present invention are not impaired.

[0012] <Basic amino acids; component B> The composition of the present invention contains a basic amino acid. The basic amino acid is added to the composition of the present invention for the purpose of imparting a good emulsification state to the composition. A basic amino acid refers to an amino acid in which the number of basic amino groups is greater than the number of acidic carboxyl groups contained in the molecule. Here, the basic amino acid may be in the D-form, the L-form, or a mixture thereof. Basic amino acids include not only proteinogenic amino acids but also non-proteinogenic amino acids. Basic amino acids also include not only α-amino acids but also β-amino acids, γ-amino acids, δ-amino acids, etc. Examples of basic amino acids include L-arginine, L-histidine, L-lysine, etc. L-arginine is preferred as the basic amino acid.

[0013] The content of component B based on the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but it can be 0.01 to 10.0 wt %, 0.1 to 8.0 wt %, 0.5 to 5.0 wt %, or 1.0 to 4.0 wt %.

[0014] 《Fatty acid; component C》 The composition of the present invention contains a fatty acid. The fatty acid is added to the composition of the present invention for the purpose of imparting a good emulsified state. The fatty acid is not limited as long as it reacts with component B to produce a fatty acid soap, and examples thereof include saturated fatty acids (lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid), monounsaturated fatty acids (palmitoleic acid, oleic acid, elaidic acid, ricinoleic acid, eicosenoic acid, erucic acid), and polyunsaturated fatty acids (linoleic acid, γ-linolenic acid, α-linolenic acid). Among these, saturated fatty acids having 12 to 22 carbon atoms are preferred, saturated fatty acids having 16 to 20 carbon atoms are more preferred, and stearic acid is most preferred.

[0015] In the composition of the present invention, a combination of component B and component C, such as fatty acid arginine, may be added, but it is preferable to add component B and component C separately.

[0016] The content of component C based on the total weight of the composition is not particularly limited as long as the effects of the present invention are obtained, but may be 0.1 to 15 wt %, 0.1 to 10 wt %, 1.0 to 9.0 wt %, 2.0 to 8.0 wt %, 2.5 to 7.5 wt %, or 3.0 to 6.0 wt %. The total amount of components B and C based on the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but may be 0.1 to 20 wt %, 1 to 18 wt %, 2 to 16 wt %, 3 to 12 wt %, 4 to 10 wt %, or 5 to 8 wt %. The ratio of the content of component B based on the total amount of the composition to the content of component C based on the total amount of the composition (content of component B / content of component C) is not limited to the following, but can be, for example, 0.05 to 5.0, 0.1 to 4.0, or 0.2 to 3.0. The total amount of components B and C relative to the content of component A in the total composition (total amount of components B and C in the total composition / content of component A in the total composition) is not limited to the following, and can be, for example, 0.1 to 10.0, 0.2 to 8.0, 0.3 to 6.0, 0.5 to 3.0, or 0.7 to 1.5.

[0017] 《Polysaccharide; Component D》 The composition of the present invention contains a polysaccharide. The polysaccharide is added to the composition of the present invention for the purpose of using it as a film-forming agent and for the purpose of imparting a good emulsifying state. The polysaccharide is not particularly limited as long as it is commonly used in cosmetics and does not impair the effects of the present invention, and for example, one or more of pullulan, gum arabic, gellan gum, powdered agar, xanthan gum, carrageenan, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, sodium chondroitin sulfate, tamarind gum, sodium alginate, quince seed gum, sclerotium gum, guar gum, scleroglucan gum, locust bean gum, maltodextrin, starch, or karaya gum can be used. Pullulan or gum arabic is preferably used, and both pullulan and gum arabic are more preferably used.

[0018] The content of component D based on the total weight of the composition is not particularly limited as long as the effects of the present invention are obtained, but may be 0.1 to 10 wt %, 1.0 to 9.0 wt %, 2.0 to 8.0 wt %, 2.5 to 8.5 wt %, 3.0 to 8.0 wt %, or 5.0 to 7.5 wt %.

[0019] Powder; ingredient E The powder of Component E is not limited as long as it is used in the relevant technical field as a color pigment, extender pigment, or UV scattering agent and does not impair the effects of the present invention. Examples of such powders include inorganic powders (e.g., mica, talc, kaolin, sericite, black iron oxide, yellow iron oxide, red iron oxide, titanium oxide, zinc oxide, iron titanate, aluminum hydroxide, aluminum oxide, hectorite, bentonite, smectite, montmorillonite, vermiculite, magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, sodium silicate, barium sulfate, metal tungstate, silicic anhydride, hydroxyapatite, zeolite, boron nitride, manganese violet, cobalt violet, oxide, chromium, chromium hydroxide, cobalt titanate, ultramarine, ferric iron, aluminum powder, copper powder, etc.), or organic powders (for example, polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, cellulose powder, organic pigments (for example, Red 2, Blue 1, Blue 2, Red 3, Red 102, Red 104, Red 202, Red 226, Yellow 3, Yellow 4, Yellow 5, Orange 201, Green 201, chlorophyll, β-carotene, carmine, gardenia yellow, etc.), zirconium, barium, aluminum lake, and other organic pigments).

[0020] The powder may be surface-treated, such as hydrophobized titanium oxide fine particles, hydrophobized titanium oxide, and hydrophobized iron oxide.

[0021] The content of component E based on the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but may be 0.1 to 60.0 wt %, 1.0 to 40.0 wt %, 3.0 to 30.0 wt %, 5.0 to 25.0 wt %, or 8.0 to 20.0 wt %.

[0022] In the composition of the present invention, the natural origin index calculated according to ISO 16128 is preferably 0.90 or more for the powder as a whole, more preferably 0.92 or more, even more preferably 0.94 or more, even more preferably 0.95 or more, even more preferably 0.97 or more, and most preferably 0.99 or more. When multiple powders are contained, the natural origin index of all the contained powders is preferably 0.90 or more, more preferably 0.92 or more, even more preferably 0.94 or more, even more preferably 0.95 or more, even more preferably 0.97 or more, and most preferably 0.99 or more. It is preferable not to use powders that have been surface-treated with petroleum-derived materials, such as silicones such as methylhydrogenpolysiloxane and methylpolysiloxane.

[0023] <Oil-based ingredient; ingredient F> The composition of the present invention contains 1.0 to 30.0% by weight of an oily component, such as hydrocarbon oil, ester oil, wax, higher alcohol, and animal and vegetable oil, which have a high index of natural origin. Examples of hydrocarbon oils include squalane, dodecane, tetradecane, and hexadecane. Ester oils include macadamia nut oil fatty acid phytosteryl, octyldodecyl myristate, tri(caprylic / capric acid)glyceryl, stearyl stearate, methylheptyl isostearate, hexyl laurate, isoacyl laurate, (caprylic / capric acid) coco-alkyl, isocetyl myristate, and isostearyl isostearate. Examples of waxes include white beeswax, Japan wax, carnauba wax, rice bran wax, sunflower seed wax, candelilla wax, spermaceti, and montan wax. Examples of higher alcohols (monohydric alcohols having 6 or more carbon atoms) include cetanol, stearyl alcohol, isostearyl alcohol, lauryl alcohol, and behenyl alcohol. Examples of animal and vegetable oils include avocado oil, linseed oil, almond oil, olive oil, cocoa butter, sesame oil, wheat germ oil, safflower oil, jojoba oil, phytosteryl macadamiate, shea butter, turtle oil, camellia oil, persic oil, castor oil, grape seed oil, macadamia nut oil, palm oil, rosehip oil, soybean oil, egg yolk oil, hydrogenated castor oil, hydrogenated palm oil, hydrogenated cocoa oil, hydrogenated turtle oil, hydrogenated mink oil, beef tallow, mink oil, lanolin (wool fat), and oily components extracted from these ingredients. Furthermore, oily components prepared from fossil fuels, such as silicones (chain silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; and cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane), liquid paraffin, petrolatum, and ceresin, have a natural origin index of 0. Therefore, it is preferable not to use oily components prepared from these fossil fuels. It is also preferable not to use synthetic oils such as polybutene and light isoparaffin.

[0024] In the composition of the present invention, it is preferable that the natural origin index calculated according to ISO 16128 is 0.90 or more for the entire oily components. The natural origin index calculated for the entire oily component is preferably 0.92 or more, more preferably 0.94 or more, even more preferably 0.95 or more, even more preferably 0.97 or more, and most preferably 0.99 or more. In the composition of the present invention, the oily component comprises a plurality of components, and the natural origin index of each oily component is preferably 0.90 or more, more preferably 0.92 or more, even more preferably 0.94 or more, even more preferably 0.95 or more, still more preferably 0.97 or more, and most preferably 0.98 or more.

[0025] The content of component F based on the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but it can be 1.0 to 30.0 wt %, 2.0 to 25.0 wt %, 3.0 to 20.0 wt %, or 5.0 to 15.0 wt %.

[0026] The composition of the present invention may contain a petroleum-derived oily component such as silicone, but the content thereof is preferably 5.0 wt % or less, more preferably 4.0 wt % or less, even more preferably 3.0 wt % or less, even more preferably 2.0 wt % or less, even more preferably 1.0 wt % or less, and most preferably 0 wt %, based on the total amount of the composition. The composition of the present invention may contain a petroleum-derived oily component such as silicone, and the content thereof is preferably 50% by weight or less, more preferably 40% by weight or less, even more preferably 30% by weight or less, even more preferably 20% by weight or less, even more preferably 10% by weight or less, even more preferably 5% by weight or less, even more preferably 2% by weight or less, even more preferably 1% by weight or less, and most preferably 0.1% by weight, based on the oily component.

[0027] 《Water; Component G》 The composition of the present invention may contain water. The content of component F based on the total weight of the composition is not particularly limited as long as the effects of the present invention are obtained, but it may be, for example, 30.0 to 90.0 wt %, 40.0 to 85.0 wt %, 45.0 to 80.0 wt %, or 50.0 to 75.0 wt %. The content of water may be greater than the content of the oily component.

[0028] <Oil-in-water emulsion cosmetic composition> The composition of the present invention can be prepared according to a conventional method, and can be in the form of a liquid, emulsion, paste, cream, or gel. The composition of the present invention can be provided as makeup cosmetics such as a makeup base, foundation, concealer, blush, eye shadow, eyelash cosmetics (mascara, mascara base, mascara top coat, etc.), eyeliner, eyebrow, overcoat, lipstick, etc.; or skin care cosmetics such as sunscreen, but is suitable as makeup cosmetics, particularly eyelash cosmetics (mascara, mascara base, mascara top coat, etc.). Mascara is the most preferred.

[0029] 《Natural origin index》 The composition of the present invention has a natural origin index calculated for the entire composition of preferably 90% or more, more preferably 92% or more, even more preferably 94% or more, even more preferably 95% or more, even more preferably 97% or more, and most preferably 99% or more. In this specification, the natural origin index calculated for the entire composition includes water.

[0030] The composition of the present invention preferably does not contain petroleum-derived components such as silicone compounds. In this specification, the term "silicone compound" refers to compounds having a siloxane (-Si-O-Si-) structure in the molecule (e.g., silicones and siloxanes) and silanes (monosilane, oligosilane, polysilane, and silane derivatives such as alkylsilane and alkoxysilane). The composition of the present invention preferably does not contain one or more of silicone oil, silicone surfactant, and powder surface-treated with a silicone compound, and more preferably does not contain any of these components. Like silicone, the composition of the present invention preferably does not contain petroleum-derived components such as mineral oil, paraffin wax, methyl parahydroxybenzoate, propyl parahydroxybenzoate, ethyl parahydroxybenzoate, butyl parahydroxybenzoate, salicylic acid, benzoic acid, sorbic acid, benzyl alcohol, tar dyes, EDTA (edetic acid), phenoxyethanol, and triethanolamine. Even if the composition of the present invention contains petroleum-derived components, the total content of these components is preferably 5.0 wt % or less, more preferably 4.0 wt % or less, even more preferably 3.0 wt % or less, even more preferably 2.0 wt % or less, even more preferably 1.0 wt % or less, and most preferably 0.1 wt % or less, based on the total amount of the composition.

[0031] 《Optional ingredients》 In addition to the above-mentioned components, the composition of the present invention can appropriately contain components typically incorporated into cosmetics, such as preservatives, within a range that does not impair the effects of the present invention. The composition of the present invention may contain ethanol, but it is preferable that it not be contained because ethanol is irritating. Even if ethanol is contained, its content is preferably 5.0 wt% or less, more preferably 4.0 wt% or less, even more preferably 3.0 wt% or less, even more preferably 2.0 wt% or less, even more preferably 1.0 wt% or less, and most preferably 0.1 wt% or less. [Example]

[0032] The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the scope of the present invention. Unless otherwise specified, % indicates % by weight.

[0033] In this example, mascaras were prepared using the component compositions shown in Table 1. All of the prepared mascaras had a natural origin index of 99% or more. ·Raw materials used (Component A) Self-emulsifying glyceryl monostearate (HLB value 8.0; natural origin index 0.99) Polyglyceryl monoisostearate (HLB value 12.0; natural origin index 1.0) Glyceryl myristate (HLB value 3.5; natural origin index 1.0) Polyglyceryl monolaurate (HLB value 14.5; natural origin index 1.0) (Component B) L-arginine (Component C) Stearic acid (Component D) Pullulan Gum arabic (Component E) Mica (natural origin index 1.0) Black iron oxide (natural origin index 1.0) Hectorite (natural origin index 1.0) (Component F) Carnauba wax (natural origin index 1.0) Behenyl alcohol (natural origin index 1.0) Macadamia nut oil fatty acid phytosteryl (natural origin index 1.0) Isostearyl alcohol (natural origin index 0.98) In Examples 1 to 7, the natural origin index of the entire component A, the entire component E, and the entire component F is all 0.99 or more. For example, the natural origin index of the entire component A in Example 1 is calculated as (4 / 6×0.99+2 / 6×1.0)=0.99.

[0034] Each evaluation item was evaluated as follows: Stability: The oil-in-water emulsion cosmetic was filled into a glass bottle and left under various conditions (room temperature, 40°C, cycle (-5°C to 45°C / day)). Changes in condition were observed for 30 days and evaluated according to the following criteria. ◎: No change under any conditions ○: Slight changes in hardness, etc. were observed, but were within the range that did not pose any problems in use. △: Solidification or separation was confirmed under at least one condition. ×: Solidification or separation was observed under all conditions.

[0035] Smoothness (easy application) / makeup staying power: 10 evaluation panelists applied each sample to their eyelashes and evaluated smoothness and makeup staying power according to the various evaluation criteria. (Smoothness (easy to spread)) ◎: More than 7 people answered "smooth (good spread)" ○: 5-6 or more people answered "smooth (good spread)" △: 3-4 people or more answered that it was smooth (good spread). ×: Smooth (good spreadability) (Makeup lasting) ◎: More than 7 people answered "good" ○: 5-6 or more people answered "good" △: 3-4 or more people answered "good" ×: Less than 2 people answered "good"

[0036] In the evaluation of the three items, if there was even one "x", the product was deemed to be outside the acceptable range. The results are shown in Table 1.

[0037] [Table 1]

[0038] Examples 1 to 7 Examples 1 to 7, which contained all of the components A to F in the specified amounts, were judged to be at a level that could be used as a product in terms of stability, smoothness, and cosmetic durability. In particular, Example 1, which contains both a glycerin fatty acid ester having 16 to 20 carbon atoms and a polyglycerin fatty acid ester having 16 to 20 carbon atoms, as well as pullulan and gum arabic, was significantly superior in terms of stability, smoothness, and cosmetic durability. Examples 2 and 3, which contained only one of the glycerin fatty acid ester having 16 to 20 carbon atoms and the polyglycerin fatty acid ester having 16 to 20 carbon atoms, were significantly superior or excellent in terms of stability, smoothness, and cosmetic wear, but were inferior to Example 1 in terms of stability and smoothness. Examples 4 and 5, which contained only pullulan or gum arabic, were significantly superior or superior in terms of stability, smoothness, and cosmetic wear. However, Example 4 was inferior to Example 1 in terms of stability and cosmetic wear, and Example 5 was inferior in terms of stability and smoothness. Examples 6 and 7, which contained either glyceryl myristate or polyglyceryl monolaurate, were significantly superior or excellent in terms of both stability and cosmetic wear. On the other hand, Examples 6 and 7 were both within the acceptable range for products in terms of smoothness, but were inferior to Examples 1 to 5.

[0039] Comparative Examples 1 to 3 Comparative Example 1, which did not contain Component A, showed significantly worse stability. Comparative Example 2, which did not contain Component D, showed significantly worse smoothness and cosmetic longevity. Comparative Example 3, which did not contain Component B, showed significantly worse stability and smoothness. [Industrial Applicability]

[0040] According to the present invention, it is possible to provide an oil-in-water emulsion cosmetic composition that uses less petroleum-derived raw materials and has excellent stability, smoothness, and cosmetic long-lasting properties.

Claims

1. (A) 0.1 to 10.0% by weight of at least one nonionic surfactant (B) Basic amino acids (C) Fatty acid (D) polysaccharide 0.1 to 10.0% by weight, (E) 0.1 to 60.0 wt. % of a powder, and (F) Oily component 1.0 to 30.0% by weight An oil-in-water emulsion cosmetic composition comprising:

2. 2. The oil-in-water emulsion cosmetic composition according to claim 1, wherein the (B) basic amino acid is L-arginine, and the (C) fatty acid is a saturated fatty acid having 12 to 22 carbon atoms.

3. 3. The oil-in-water emulsion cosmetic composition according to claim 1, wherein the oil-in-water emulsion cosmetic composition has a natural origin index calculated in accordance with ISO 16128 of 90% or more.

4. 3. The oil-in-water emulsion cosmetic composition according to claim 1, wherein the nonionic surfactant (A) comprises a glycerin fatty acid ester having 12 to 22 carbon atoms and / or a polyglycerin fatty acid ester having 12 to 22 carbon atoms.

5. The oil-in-water emulsion cosmetic composition according to claim 1 or 2, which is a cosmetic for eyelashes.

Citation Information

Patent Citations

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