Wax-in-water emulsified cosmetic for eyelashes

Abstract

A wax-in-water emulsified cosmetic for eyelashes comprising (a) a polyglycerol, ester having a glycerol polymerization degree of 2 to 12 and being esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms, (b) a wax and (c) a pigment.

Description

[DESCRIPTION][Title of Invention]WAX-IN- WATER EMULSIFIED COSMETIC FOR EYELASHES[Technical Field]

[0001] The present invention relates to a wax-in-water emulsified cosmetic for eyelashes.[Background Art]

[0002] Eyelash cosmetics such as mascara are makeup products that have an effect of increasing beautifying the eyes by causing the eyelashes to appear darker, longer and moderately curled. In the European and American markets, consumers place high value on products that provide an excellent volume effect.

[0003] Mascara formulations can be divided into two types: anhydrous and wax-in-water types, with wax-in-water mascaras becoming more popular among consumers since they can be easily removed by washing. Beeswax is a type of animal wax that has unique properties of 1) giving good adhesion without stickiness and 2) imparting adequate viscosity without a feeling of dryness to cosmetics, and it is therefore often added to wax-in-water mascaras to increase their volume effect.

[0004] However, consumers in European and American markets have recently showed increased interest in cosmetic products that are free of animal-derived components, from the viewpoint of sustainability' and ethics. Wax-in-wnter mascaras that can increase the volume effect without adding animal-derived components such as beeswax, while producing an even makeup finish and exhibiting a smooth texture when applied, are therefore considered to be highly desirable products.[Summary of Invention][Technical Problem]

[0005] However, as no component exists at the current time that can provide the unique properties of beeswax, it has been extremely difficult to develop a wax-in- water mascara that can increase the volume effect without addition of beeswax, and no such developed product has yet been disclosed.

[0006] It is an object of the invention to provide a novel wax-in-water emulsifiedcosmetic for eyelashes having an excellent volume effect, even makeup finish and smooth texture when applied, even without addition of animal-derived components.[Solution to Problem]

[0007] The present invention provides a wax-in-water emulsified cosmetic for eyelashes comprising (a) a polyglycerol ester having a glycerol polymerization degree of 2 to 12 and being esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms, ( b) a wax and (c) a pigment.

[0008] As used herein, the "(a) polyglycerol ester having a glycerol polymerization degree of 2 to 12 and being esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms" may also be referred to simply as "component (a)", and likewise for the other components.

[0009] hi the wax-in-water emulsified cosmetic for eyelashes of the invention, the saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms may be at least one selected from the group consisting of eicosanedioic acid, docosanedioic acid, tetradecanedioic acid, hexadecanedioic acid and octadecanedioic acid. This will result in greater excellence in terms of the volume effect, even makeup finish and smooth texture when applied.

[0010] The polyglycerol ester (a) in the wax-in-water emulsified cosmetic for eyelashes of the invention may also be further esterified with at least one saturated aliphatic monocarboxylic acid of 16 to 28 carbon atoms. The saturated aliphatic monocarboxylic acid of 16 to 28 carbon atoms may be at least one selected from the group consisting of palmitic acid, stearic acid, hydroxystearic acid and behenic acid. This will result in greater excellence in tenns of the volume effect, even makeup finish and smooth texture when applied.

[0011] The glycerol polymerization degree of the polyglycerol ester in the wax-in-water emulsified cosmetic for eyelashes of the invention may be 5 to 10, and is preferably 10. Limiting the polymerization degree to within this range will result in greater excellence in terms of the volume effect, even makeup finish and smooth texture when applied.

[0012] The polyglycerol ester (a) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be at least one selected from the group consisting ofpolyglyceryl-10 (behenate / eicosadioate), polyglyceryl-10 penta(behenate / eicosadioate) and polyglyceryl-10(hydroxystearate / stearate / eicosadioate), and is preferably polyglyceryl-10 (behenate / eicosadioate) or polyglyceryl-10 penta(behenate / eicosadioate) and more preferably polyglyceryl-10 (behenate / eicosadioate). Limiting component (a) to these components will result in even greater excellence in terms of the volume effect, even makeup finish and smooth texture when applied.

[0013] The content of the polyglycerol ester (a) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be 1 to 10 mass%, preferably 2 to 8 mass%, more preferably 3 to 7 mass% and most preferably 4 to 6 mass%, based on the total mass of tire cosmetic.

[0014] The wax (b) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be a vegetable wax and / or a hydrocarbon wax, and is preferably at least one selected from the group consisting of oryza sativa (rice) bran wax, hydrogenated olive oil stearyl esters, euphorbia cerifera (candelilla) wax, copemicia cerifera (carnauba) wax, hydrogenated coconut oil and paraffin wax, more preferably at least one selected from the group consisting of oryza sativa (rice) bran wax, hydrogenated olive oil stearyl esters and hydrogenated coconut oil, and even more preferably a combination of oryza sativa (rice) bran wax, a hydrogenated olive oil stearyl ester and hydrogenated coconut oil. A combination of these waxes as component (b) with component (a) can produce a wax-in-water emulsified cosmetic for eyelashes having an excellent volume effect, even makeup finish and smooth texture when applied, while being free of animal-derived components such as beeswax.

[0015] The content of the wax (b) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be 5 to 50 mass%, preferably 8 to 40 mass%, more preferably 10 to 30 mass% and most preferably 12 to 20 mass%, based on the total mass of the cosmetic.

[0016] The pigment (c) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be at least one selected from the group consisting of iron oxide, ultramarines, ferric ammonium ferrocyanide, manganese violet, chromium oxide greens, chromium hydroxide green and titanium oxide, and is preferably iron oxide.

[0017] The content of the pigment (c) in the wax-in-water emulsified cosmetic for eyelashes of the invention may be 1 to 30 mass%, preferably 4 to 20 mass%, more preferably 6 to 15 mass% and most preferably 8 to 12 mass%, based on the total mass of the cosmetic.

[0018] The wax-in-water emulsified cosmetic for eyelashes of the invention may further comprise (d) a sugar alcohol and / or a sugar.

[0019] A sugar alcohol in the wax-in-water emulsified cosmetic for eyelashes of the invention may be at least one selected from the group consisting of maltitol and sorbitol, and a sugar may be trehalose.

[0020] The wax-in-water emulsified cosmetic for eyelashes of the invention may still further comprise (e) an oil-soluble film-forming agent and / or a water-soluble film-forming agent.

[0021] The present invention also provides a cosmetic method for caring for and / or making-up eyelashes, wherein the method includes the application onto eyelashes of a wax-in-water emulsified cosmetic of the invention.[Advantageous Effects of Invention]

[0022] According to the invention it is possible to provide a novel wax-in-water emulsified cosmetic for eyelashes having an excellent volume effect, even makeup finish and smooth texture when applied, even without addition of animal-derived components.[Description of Embodiments]

[0023] Preferred embodiments of the invention will now be described, with the understanding that these embodiments are in no way limitative on the invention.

[0024] Polyglvcerol esterThe wax-in-water emulsified cosmetic for eyelashes of this embodiment (hereunder also referred to simply as "wax-in-water emulsified cosmetic") comprises (a) a polyglycerol ester having a glycerol polymerization degree of 2 to 12 and being esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms.

[0025] The term "polyglycerol ester", as used herein, refers to a compound obtained byesterification of at least one hydroxyl group of a polyglycerol molecule having two or more polymerized glycerol molecules.

[0026] The term "glycerol polymerization degree" as used herein means the number of molecules of glycerol forming the polyglycerol ester. Limiting the polymerization degree of glycerol to 2 to 12 will result in greater excellence in terms of the volume effect, even makeup finish and smooth texture when the wax-in-water emulsified cosmetic is applied. The polymerization degree of die glycerol is preferably 5 to 10 and more preferably 10. This can increase the viscosity of the polyglycerol ester, helping to enhance adhesion of the cosmetic. According to one aspect, the polyglycerol ester with a glycerol polymerization degree of 2 to 12 may be a diglycerol ester, triglycerol ester, pentaglycerol ester, hexaglycerol ester, octaglycerol ester, decaglycerol ester or dodecaglycerol ester, and is preferably a pentaglycerol ester, hexaglycerol ester, octaglycerol ester or decaglycerol ester and more preferably a decaglycerol ester.

[0027] For this embodiment the polyglycerol ester is esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms (preferably 18 to 28 carbon atoms and more preferably 18 to 24 carbon atoms). This can increase the viscosity of the polyglycerol ester, helping to enhance adhesion of the cosmetic. The polyglycerol ester may have an ester bond formed with one of the carboxyl groups of the saturated aliphatic dicarboxylic acid, or it may have ester bonds with both of the carboxyl groups. Examples for the saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms include eicosanedioic acid, docosanedioic acid, tetradecanedioic acid, hexadecanedioic acid and octadecanedioic acid. Eicosanedioic acid is preferred among these to obtain even greater excellence in terms of the volume effect, even makeup finish and smooth texture when the wax-in-water emulsified cosmetic is applied.

[0028] For this embodiment the polyglycerol ester may be further esterified with at least one saturated aliphatic monocarboxylic acid of 16 to 28 carbon atoms (preferably 18 to 28 carbon atoms and more preferably 18 to 24 carbon atoms). Illis can further increase the viscosity of the polyglycerol ester, helping to further enhance adhesion of the cosmetic. The carbon atoms of the alkyl groups in the saturated aliphatic monocarboxylic acid may be optionally substituted with hydroxyl groups and / or keto groups (carbonyl groups). Saturated aliphatic monocarboxylic acids of 16 to 28 carbon atoms include palmitic acid, stearic acid, 7 h ev# drox ev# stearic acid, 7 10-ketostearic acid #, arachidic acid, 7 behenic acid, 7lignoceric acid, cerotic acid and montanic acid. Palmitic acid, stearic acid, hydroxystearic acid and behenic acid are preferred among these, with behenic acid being more preferred, to obtain even greater excellence in terms of the volume effect, even makeup finish and smooth texture when the wax-in-water emulsified cosmetic is applied.

[0029] Specific eexxaammpplleess for component (a) include poly glyceryl- 10 (behenate / eicosadioate), polyglyceryl-10 penta(behenate / eicosadioate) and polyglyceryl- 10 (hydroxystearate / stearate / eicosadioate) . Of these, polyglyceryl-10 (behenate / eicosadioate) and poly glyceryl- 10 penta(behenate / eicosadioate) are preferred, and polyglyceryl-10 (behenate / eicosadioate) is more preferred. Component (a) may be a single compound used alone, or twro or more may be used in combination. Commercially available products of polyglyceryl-10 (behenate / eicosadioate) (trade name: NOMCORTRIIK-P, product of Nisshin OilliO Group, Ltd.) and polyglyceryl-10 penta(behenate / eicosadioate) (trade name: S-FACE BED- 102, product of Sakamoto Yakuhin Kogyo Co., Ltd.) may be used as component (a).

[0030] The content of component (a) may be 1 to 10 mass%, preferably 2 to 8 mass%, more preferably 3 to 7 mass% and even more preferably 4 to 6 mass%, based on the total mass of the wax-in-water emulsified cosmetic.

[0031] Wax The wax-in-water emulsified cosmetic of this embodiment comprises a wax (b).

[0032] As used herein, the term "wax" refers to a lipophilic compound that is a solid at ordinary temperature (25°C) and ordinary pressure (1 atm) and exhibits reversible solid / liquid state transition, with a melting point at 30 to 200°C (the lower limit for the melting point being preferably above 30°C and more preferably above 45°C; and the upper limit for the melting point being preferably 120°C or lower). The "melting point" referred to herein corresponds to the maximum endothermic peak temperature measured in thermal analysis (differential thermal analysis, DSC), as described in Standard ISO 11357-3; 1999. The melting point of a wax can be measured using a commercially available differential scanning calorimeter (DSC). Component (b) for the present specification is clearly distinguished from component (a), with component (b) excluding component (a).

[0033] Waxes include vegetable waxes such as hydrogenated olive oil stearyl esters, hydrogenated olive oil, hydrogenated coconut oil, hydrogenated castor oil, hydrogenated palm oil, hydrogenated palm kernel oil, hydrogenated jojoba oil, hydrogenated sunflower seed oil, oryza sativa (rice) bran wax, copernicia cerifera (carnauba) wax, euphorbia cerifera (candelilla) wax, ouricury' wax, Japanese wax, wood wax, montan wax, cork fiber wax, sugarcane wax, orange wax and lemon wax; animal waxes such as beeswax and whale wax; and hydrocarbon waxes such as synthetic wax, paraffin wax, microcrystalline wax, polyethylene wax, polypropylene wax, Fischer-Tropsch wax and ozokerite. Preferred among these are vegetable waxes and synthetic waxes, since they can provide a more excellent volume effect for the wax-in-water emulsified cosmetic without addition of animal -derived components, with vegetable waxes being more preferred, hydrogenated olive oil stearyl ester, oryza sativa (rice) bran wax and hydrogenated coconut oil being even more preferred, and a combination of hydrogenated olive oil stearyl ester, oryza sativa (rice) bran wax and hydrogenated coconut oil being especially preferred. Component (b) may be a single type used alone, or two or more may be used in combination. For one aspect, component (b) preferably does not include animal wax, and more preferably it does not include beeswax.

[0034] The content of component (b) may be 5 to 50 mass%, preferably 8 to 40 mass%, more preferably 10 to 30 mass% and most preferably 12 to 20 mass%, based on the total mass of the wax-in-water emulsified cosmetic.

[0035] PigmentThe wax-in-water emulsified cosmetic of this embodiment comprises a pigment (c)-

[0036] Examples of pigments include inorganic pigments such as iron oxides (for example, black iron oxide, red iron oxide and yellow' iron oxide), titanium oxide, zinc oxide, zirconium oxide, cobalt oxide, chromium oxide greens, chromium hydroxide green, ultramarines, ferric ammonium ferrocyanide, manganese violet and metal powders (for example, aluminum powder and copper powder); organic pigments such as carbon black, D&C pigments and lake pigments; and reflective pigments and pearlescent pigments. Preferred among these are iron oxide, ultramarines, ferric ammonium ferrocyanide, manganese violet, chromium oxide greens, chromium hydroxide green and titanium oxide, since they can produce colors (such as black) more suitable for eyelashes, with ironoxide being more preferred. Component (c) may be a single compound used alone, or two or more may be used in combination.

[0037] The content of component (c) may be 1 to 30 mass%, preferably 4 to 20 mass%, more preferably 6 to 15 mass% and most preferably 8 to 12 mass%, based on the total mass of the wax-in-water emulsified cosmetic.

[0038] Sugar alcohol and / or sugar fhe wax-in-water emulsified cosmetic of this embodiment may further comprise (d) a sugar alcohol and / or a sugar. If the wax-in-water emulsified cosmetic comprises component (d), the composition will be able to exhibit even greater excellence in tenns of the volume effect and even makeup finish.

[0039] The term "sugar alcohol" as used herein means a monosaccharide or disaccharide having a carbonyl group in the molecule reduced to a hydroxyl group. Examples of sugar alcohols include maltitol, sorbitol, erythritol, mannitol and xylitol.

[0040] The term "sugar" as used herein refers to a monosaccharide or disaccharide. Examples of sugars include trehalose, sucrose and maltose.

[0041] Maltitol, sorbitol and trehalose are preferred for component (d) because they can provide even greater excellence in terms of the volume effect, even makeup finish and smooth texture when the wax-in-water emulsified cosmetic is applied. Component (d) may be a single one used alone, or two or more may be used in combination.

[0042] The content of component (d) may be 0.1 to 5.0 mass%, preferably 0.3 to 3.0 mass%, more preferably 0.5 to 2.0 mass% and most preferably 0.7 to 1.5 mass%, based on the total mass of the wax-in-water emulsified cosmetic.

[0043] Film-forming agentThe wax-in-water emulsified cosmetic of this embodiment may still further comprise an oil-soluble film-forming agent and / or a water-soluble film-forming agent (e).

[0044] Examples of oil-soluble film-forming agents include (VP / eicosene) copolymer, (VP / hexadecene) copolymer and VP / VA copolymer. Examples of water-solublefilm-forming agents include hydroxypropyl starch, acacia Senegal gum and pullulan. Component (e) may be a single one used alone, or two or more may be used in combination.

[0045] Higher fatty acids or its esterThe wax -in-water emulsified cosmetic of this embodiment may further comprise a higher fatty acid or its ester.

[0046] Fatty acids of 12 to 22 carbon atoms are examples of higher fatty acids. Specific examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, isostearic acid and hydroxystearic acid. Specific examples of higher fatty7acid esters include behenyl behenate and arachidyl behenate. Such a "higher fatty7acid or its ester" excludes component (a). The higher fatty acid or its ester which is used may be a single type or a combination of two or more types.

[0047] Higher alcoholHie wax-in-water emulsified cosmetic of this embodiment may further comprise a higher alcohol.

[0048] Examples of higher alcohols include alcohols of 12 to 22 carbon atoms. Specific examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetanol, cetosteaiyl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, selachyl alcohol, isostearyl alcohol and lanolin alcohol. A single higher alcohol may be used alone, or two or more may be used in combination.

[0049] SurfactantThe wax-in-water emulsified cosmetic of this embodiment may further comprise a surfactant. The surfactant may be chosen from an anionic surfactant and a nonionic surfactant.

[0050] Examples of anionic surfactants include higher fatty acid salts obtained by neutralizing the above higher fatty acids with amines such as triethanolamine or aminomethyl propanediol, ammonia solution, metal hydroxides, or mixtures thereof. Examples of nonionic surfactants include poly glycerol fatty acid esters such as polyglyceryl-2 laurate, polyglyceryl-2 stearate, polyglyceryl-2 oleate, polyglyceryl-2 isostearate, polyglyceryl-4 isostearate, poly glyceryl- 10 laurate, polygly ceryl- 10 myristate, poly glyceryl- 10 stearate, polyglyceryl-10 oleate,poly glyceryl- 10 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-3 diisostearate and polygly ceryl- 10 diisostearate (with the condition that the "polyglycerol fatty acid ester" does not include component (a)); glycerol fatty acid esters such as glyceryl myristate, glyceryl stearate, glyceryl isostearate, glyceryl oleate and glyceryl diisostearate; and sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monooleate, sorbitan tristearate and sorbitan trioleate. Tire surfactant used may be a single type alone, or two or more may be used in combination.

[0051] Aqueous mediumThe wax-in-water emulsified cosmetic of this embodiment may further comprise an aqueous medium. The aqueous medium may consist of water alone, or it may also include a solvent that is soluble in water.

[0052] Examples of solvents that are soluble in water include monools such as methanol, ethanol, propyl alcohol, isopropyl alcohol and phenoxyethanol; and polyhydric alcohols such as ethylene glycol, propanediol (1 ,2-propanediol, 1,3-propanediol), propylene glycol, butylene glycol, pentylene glycol (1,2-pentanediol), hexylene glycol, 1,2-hexanediol, dipropylene glycol, polyethylene glycol, glycerol, diglycerol, polyglycerol and caprylyl glycol (with the condition that the "polyhydric alcohol" does not include component (d)). The solvent that is soluble in water may be a single one used alone, or two or more may be used in combination. Butylene glycol is preferred among these.

[0053] The content of the aqueous medium may be 20 to 90 mass%, preferably 30 to 80 mass%, more preferably 40 to 70 mass% and most preferably 50 to 60 mass%, based on the total mass of the wax-in-water emulsified cosmetic.

[0054] Other optional componentsThe wax-in-water emulsified cosmetic of this embodiment may also comprise, in addition to these components, oil components other than the fatty7phase components mentioned above (for example, paste oils and liquid oils), fillers, thickeners, pH regulators, chelating agents, antioxidants, antifading agents, antiseptic agents, active ingredients, stabilizers and perfumes, added as appropriate in order to impart various effects.

[0055] Production methodThe wax-in-water emulsified cosmetic of this embodiment can be produced by the following steps, as an example.(1) The aqueous medium, and if necessary component (d) and component (e) (water-soluble film-forming agent), as well as other aqueous components, are stirred together using a homogenizer at 80 to 90°C (preferably 85°C) to prepare an aqueous phase.(2) Component (a), component (b) and if necessary component (e) (oil-soluble film-forming agent), as well as other oil components, are melted while mixing at 85 to 95 °C (preferably 90°C), to prepare a fatty' phase.(3) Component (c) and other powder components are added to the fatty phase obtained in (2) while stirring the fatty phase using a homogenizer, for 30 minutes of dispersion.(4) The mixture obtained in (3) is added to the aqueous phase obtained in (1) at 80 to 90°C (preferably 85 °C), and stirring is carried out for 5 to 20 minutes (preferably 10 minutes) using a homogenizer, for emulsification.(5) Heating is suspended and the mixture is allowed to stand while gradually reducing stirring, until reaching a temperature of 30°C.

[0056] The wax-in-water emulsified cosmetic of tlie embodiment can be suitably used as an eyelash cosmetic, such as a mascara.[Examples]

[0057] The present invention will now be explained in specific detail through the following Examples, with the understanding that tlie invention is not limited by the Examples.

[0058] (1) Preparation of wax-in-water emulsified cosmeticsWax-in-water emulsified cosmetics were prepared with the compositions listed in Table 1, by the following steps.Step 1: Water, component (d), component (e) (water-soluble film-forming agent) and other aqueous components were stirred using a homogenizer in a water bath at 85 °C, to prepare aqueous phase C.Step 2: Component (a), component (b), component (e) (oil-soluble film-forming agent) and other oil components were melted while mixing in a water bath at 90°C, to prepare fatty phase A.Step 3: Component (c) (powder phase B) was added to fatty phase A obtained in step 2 while stirring fatty phase A using a homogenizer, for 30 minutes of dispersion.Step 4: The mixture obtained in step 3 was added to aqueous phase C obtained in step 1 in a water bath at 85°C, and a homogenizer was used for 10 minutes of emulsification.Step 5: The water bath was removed, and then tlie mixture was allowed to cool to 30°C w'hile gradually reducing stirring, to prepare cosmetics for the Examples and Comparative Examples.

[0059] (2) Organoleptic evaluation fhe cosmetics of the Examples and Comparative Examples were applied onto the eyelashes of 10 cosmetic experts of an evaluation panel (ages 25 to 55 ), and the volume effect, even makeup finish and smooth texture when applied were evaluated on the following scale. Cosmetics receiving an evaluation of A to C were judged to have acceptable properties. The evaluation results are shown in Table 1.

[0060] Evaluation scale for volume effectA: Very excellent (e.g.: 9 or 10 evaluators out of 10, perceived a cosmetic finish with volume)B: Excellent (e.g.: 7 or 8 evaluators out of 10, perceived a cosmetic finish with volume)C: Good (e.g.: 5 or 6 evaluators out of 10, perceived a cosmetic finish with volume)D: Fair (e.g.: 3 or 4 evaluators out of 10, perceived a cosmetic finish with volume)E: Poor (e.g.: 1 or 2 evaluators out of 10, perceived a cosmetic finish with volume)F: Very poor (e.g.: None of tlie evaluators perceived a cosmetic finish with volume)

[0061] Evaluation scale for even makeup finishA: Very excellent (e.g.: 9 or 10 evaluators out of 10, perceived an even cosmetic finish)B: Excellent (e.g.: 7 or 8 evaluators out of 10, perceived an even cosmetic finish)C: Good (e.g.: 5 or 6 evaluators out of 10, perceived an even cosmetic finish) D: Fair (e.g.: 3 or 4 evaluators out of 10, perceived an even cosmetic finish) E: Poor (e.g.: 1 or 2 evaluators out of 10, perceived an even cosmetic finish) F: Very' poor (e.g.: None of the evaluators perceived an even cosmetic finish)

[0062] Evaluation scale for smooth texture when appliedA: Very excellent (e.g.: 9 or 10 evaluators out of 10, perceived a smooth texture when applied)B: Excellent (e.g.: 7 or 8 evaluators out of 10, perceived a smooth texture when applied)C: Good (e.g.: 5 or 6 evaluators out of 10, perceived a smooth texture when applied)D: Fair (e.g.: 3 or 4 evaluators out of 10, perceived a smooth texture when applied)E: Poor (e.g.: 1 or 2 evaluators out of 10, perceived a smooth texture when applied)F: Very poor (e.g.: None of the evaluators perceived a smooth texture when applied)

[0063] (3) Stability evaluation fhe cosmetics of the Examples and Comparative Examples were each filled into a transparent container and sealed with a cap, and then stored for 1 month at 50°C. As a control, each cosmetic was also used after storage for 1 month at room temperature. The outer appearance of each stored cosmetic was visually observed and evaluated as "F" if water separation or hardening was observed, or as "A" if they were not observed. Here, "water separation" means separation of water onto the surface of the cosmetic, while "hardening" means significant hardening and loss of fluidity of the cosmetic compared to the control. The evaluation results are shown in Table 1.

[0064] [Table 1]14Si 3 s 3 III! si § 5 It. I h333 d81 h

Claims

[CLAIMS]

1. A wax-in-water emulsified cosmetic for eyelashes comprising(a) a polyglycerol ester having a glycerol polymerization degree of 2 to 12 and being esterified with at least one saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms,(b) a wax and(c) a pigment.

2. lire wax-in-water emulsified cosmetic for eyelashes according to claim 1, wherein the saturated aliphatic dicarboxylic acid of 16 to 28 carbon atoms is at least one selected from the group consisting of eicosanedioic acid, docosanedioic acid, tetradecanedioic acid, hexadecanedioic acid and octadecanedioic acid.

3. The wax-in-water emulsified cosmetic for eyelashes according to claim 1 or 2, wfrerein the polyglycerol ester (a) is further esterified with at least one saturated aliphatic monocarboxylic acid of 16 to 28 carbon atoms.

4. The wax-in-water emulsified cosmetic for eyelashes according to claim 3, wherein the saturated aliphatic monocarboxylic acid of 16 to 28 carbon atoms is at least one selected from the group consisting of palmitic acid, stearic acid, hydroxystearic acid and behenic acid.

5. Ihe wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 4, wherein the glycerol polymerization degree of the polyglycerol ester is 5 to 10, and preferably 10.

6. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 5, wherein the polyglycerol ester (a) is at least one selected from the group consisting of poly glyceryl- 10 (behenate / eicosadioate), poly glyceryl- 10 penta(behenate / eicosadioate) and polyglyceryl- 10(hydroxystearate / stearate / eicosadioate), preferably polyglyceryl- 10 (behenate / eicosadioate) or poly glyceryl- 10 penta(behenate / eicosadioate) and more preferably polyglyceryl-10 (behenate / eicosadioate).

7. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 6, wherein the content of the polyglycerol ester (a) is 1 to 10 mass%,preferably 2 to 8 mass%, more preferably 3 to 7 mass% and most preferably 4 to 6 mass%, based on the total mass of the composition.

8. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 7, wherein the wax (b) is a vegetable wax and / or a hydrocarbon wax, preferably at least one selected from the group consisting of oryza sativa (rice) bran wax, hydrogenated olive oil stearyl esters, euphorbia cerifera (candelilla) wax, copemicia cerifera (carnauba) wax, hydrogenated coconut oil and paraffin wrax, more preferably at least one selected from the group consisting of oryza sativa (rice) bran wax, hydrogenated olive oil stearyl esters and hydrogenated coconut oil, and even more preferably a combination of oryza sativa (rice) bran wax, a hydrogenated olive oil stearyl ester and hydrogenated coconut oil.

9. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 8, wherein tlie content of the wax (b) is 5 to 50 mass%, preferably 8 to 40 mass%, more preferably 10 to 30 mass% and most preferably 12 to 20 mass%, based on the total mass of the composition.

10. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 9, wherein tlie pigment (c) is at least one selected from the group consisting of iron oxide, ultramarines, ferric ammonium ferrocyanide, manganese violet, chromium oxide greens, chromium hydroxide green and titanium oxide, and preferably iron oxide.

11. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 10, wherein the content of the pigment (c) is 1 to 30 mass%, preferably 4 to 20 mass%, more preferably 6 to 15 mass% and most preferably 8 to 12 mass%, based on the total mass of the composition.

12. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 11, wherein: the polyglycerol ester (a) is at least one selected from die group consisting of poly glyceryl- 10 (behenate / eicosadioate) and poly glyceryl- 10 penta(behenate / eicosadioate); the wax (b) is a combination of oryza sativa (rice) bran wax, a hydrogenated olive oil stearyl ester and hydrogenated coconut oil; and the pigment (c) is at least one selected from the group consisting of iron oxide, ultramarines, chromium oxide greens, chromium hydroxide green and titaniumoxide.

13. The wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 12, which further comprises (d) a sugar alcohol and / or a sugar.

14. The wax-in-water emulsified cosmetic for eyelashes according to claim 13, wherein the sugar alcohol is at least one selected from the group consisting of maltitol and sorbitol, and the sugar is trehalose.

15. Th e wax-in-water emulsified cosmetic for eyelashes according to any one of claims 1 to 14, which further comprises (e) an oil-soluble film-forming agent and / or a water-soluble film-forming agent.

16. A cosmetic method for caring for and / or making-up eyelashes, wherein the method includes the application onto eyelashes of a wax-in-water emulsified cosmetic according to any one of claims 1 to 15.

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