Milky liquid cosmetic

Abstract

To provide a cosmetic that is producible without employment of special apparatus and further without employment of an oil agent, and that maintains a homogeneous, slightly turbid to milky stable state over a wide temperature range for a long period.SOLUTION: A milky liquid cosmetic comprising (a) sodium dilauroyl glutamate lysine, (b) polyglyceryl-2 isostearate, (c) glycerin, (d) an oily component, and (e) water.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a liquid cosmetic preparation having a slightly cloudy to cloudy appearance. [Background technology]

[0002] In recent years, the appearance characteristic of cloudy whiteness has become popular in the field of liquid cosmetics. This is thought to be because cloudy liquid cosmetics give a stronger impression of dense ingredients than transparent ones.

[0003] Cloudy liquid cosmetics are generally made cloudy by blending an active agent, an oil, or both, but these cloudy liquid cosmetics tend to cream over time, making it difficult to maintain their stability over a long period of time.

[0004] Therefore, in order to produce a stable cloudy lotion, attempts have been made to improve the stability of cloudy cosmetics over time by using a high-pressure emulsifier to obtain fine emulsion particles, or by adding a thickener to increase the viscosity of the liquid cosmetic.

[0005] For example, it has been proposed to obtain a cloudy lotion by blending silicone oil with a high refractive index (see Patent Document 1).

[0006] It has also been proposed to obtain a cloudy cosmetic preparation that is stable over time by blending an acyl amino acid ester as an oil component and further blending tamarind gum, a specific thickener (see Patent Document 2). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2020-121935 [Patent Document 2] JP 2016-060716 A Summary of the Invention [Problem to be solved by the invention]

[0008] As described above, opaque cosmetics have been prepared by opacifying emulsion cosmetics. However, the opaque cosmetics proposed in Patent Document 1 or Patent Document 2 are obtained by emulsifying an oil with an active agent. Therefore, a high amount of oil had to be blended to achieve a sufficiently opaque appearance. Furthermore, since high-pressure emulsification requires special machinery, there are equipment limitations, and it has become clear that improvements are needed.

[0009] Therefore, a new method for obtaining opaque cosmetics has been sought that does not require a high content of oil and does not require special machinery for high-pressure emulsification.

[0010] The object of the present invention is to provide a cosmetic that can be produced without using any special equipment, and further without using any oily agent, and that stably maintains a uniform, slightly cloudy to milky white state over a wide temperature range for a long period of time. [Means for solving the problem]

[0011] As a result of extensive research, the present inventors have newly discovered that by blending polyglyceryl-2 isostearate, glycerin, sodium lysine dilauroyl glutamate, and water, a liquid cosmetic preparation that is stable over time and has a very uniform, slightly cloudy to milky appearance can be obtained, leading to the completion of the present invention.

[0012] That is, the first means of the present invention for solving the above problems is: (a) Sodium lysine dilauramidoglutamate (b) Polyglyceryl-2 Isostearate (c) Glycerin (d) water The present invention relates to a milky white liquid cosmetic composition containing the above.

[0013] A second aspect of the present invention for solving the above problems is the opaque liquid cosmetic preparation according to the first aspect of the present invention, characterized in that the blending amount of component (a) is 0.01 to 2 mass %, the blending amount of component (b) is 0.1 to 20 mass %, and the blending amount of component (c) is 0.17 to 34 mass %.

[0014] The third aspect of the present invention for solving the above problems is the cloudy liquid cosmetic preparation according to the first or second aspect of the present invention, which can be prepared by blending 0.01 to 0.5 mass % of any oily component in the composition. [Effects of the Invention]

[0015] According to the present invention, it is possible to obtain a milky liquid cosmetic preparation that reduces the amount of oil to be blended and does not require the addition of a water-soluble polymer for stabilization.

[0016] Furthermore, the present invention makes it possible to produce a milky white liquid cosmetic without using special equipment for high-pressure emulsification.

[0017] Furthermore, the present invention makes it possible to obtain a liquid cosmetic that stably maintains a uniform, slightly cloudy or milky state over a wide temperature range for a long period of time. DETAILED DESCRIPTION OF THE INVENTION

[0018] The following describes embodiments of the present invention. However, the present invention is not limited to these examples, and various modifications can be made without departing from the spirit of the present invention.

[0019] The sodium dilauroyl glutamate lysine used in the present invention is classified as a gemini ionic surfactant. Sodium dilauroyl glutamate lysine solutions are commercially available, and such commercial products can be purchased and used. An example of such a commercial product is "Pellicer (registered trademark) L-30" (Asahi Kasei Finechem Co., Ltd., Japan).

[0020] The amount of sodium lysine dilauroyl glutamate used in the present invention is preferably 0.01% to 2.0% by mass. Specific examples of the amount of sodium lysine dilauroyl glutamate include 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.07%, 0.1%, 0.3%, 0.5%, 0.7%, 1.0%, 1.3%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, and 2.0% by mass, and may be within a range between any two of these values. Too much sodium lysine dilauroyl glutamate may result in a plateau in the appearance of cloudiness, limiting formulation flexibility, while too little may result in the aforementioned effects not being exhibited.

[0021] The polyglyceryl-2 isostearate used in the present invention is classified as a hydrophilic surfactant. Some of these are already commercially available, and these commercially available products can be purchased and used. Examples of such commercially available products include "DG oil DISG-1" (National Mimatsu Co., Ltd., Japan), "NIKKOL DGMIS" (Nikko Chemicals Co., Ltd., Japan), "S Face IS-201P" (Sakamoto Pharmaceutical Co., Ltd., Japan), "Cosmol 41V" (Nisshin Oillio Group, Ltd., Japan), and "Lithorex PGIS21" (Kyukyu Alcohol Kogyo Co., Ltd., Japan).

[0022] The amount of polyglyceryl-2 isostearate used in the present invention is preferably 0.1% to 20.0% by mass. Specific examples of the amount of polyglyceryl-2 isostearate include 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.7%, 1.0%, 3.0%, 5.0%, 7.0%, 10.0%, 13.0%, 15.0%, 17.0%, 18.0%, 19.0%, and 20.0% by mass, and may be within a range between any two of these values. If the amount of polyglyceryl-2 isostearate is too high, the cloudiness in appearance may plateau, limiting the flexibility of formulation, while if the amount is too low, the aforementioned effects may not be achieved.

[0023] The blending amount of glycerin used in the present invention is preferably 0.1% to 35.0% by mass, and more preferably 0.17% to 34.0% by mass. Specific blending amounts of glycerin are 0.1%, 0.15%, 0.17%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%, 3.0%, 5.0%, 7.0%, 10.0%, 13.0%, 15.0%, 20.0%, 25.0%, 27.0%, 30.0%, 34.0%, and 35.0% by mass, and may be within a range between any two of these values. If the amount of glycerin is too high or too low, a cloudy liquid cosmetic preparation may not be obtained, or stability problems may occur.

[0024] The oily component used in the present invention is a component that constitutes the oil phase of the opaque cosmetic according to the present disclosure. The oily component can be an oil typically used in cosmetics, quasi-drugs, etc., and examples of such oils include hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, silicone oils, and liquid oils. Oil-soluble components typically used in cosmetics, quasi-drugs, etc., can also be included, and examples of such components include fragrances and oil-soluble UV absorbers.

[0025] Examples of the hydrocarbon oil include isododecane, isohexadecane, isoparaffin, liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, and microcrystalline wax.

[0026] Examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tall acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid.

[0027] Examples of the higher alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.), branched-chain alcohols (e.g., monostearyl glycerin ether (batyl alcohol)-2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.), and the like.

[0028] Examples of the synthetic ester oils include isononyl isononanoate, octyl octanoate, nonyl nonanoate, cetyl octanoate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid esters, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, tripropylene glycol pivalate, diisostearyl malate, glycerin di-2-heptylundecanoate, glycerin diisostearate, trimethylolpropane tri-2-ethylhexanoate, triisostearate Trimethylolpropane, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, glycerin trioctanoate, glycerin triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glycerin trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetonitrile Examples of suitable glycerides include glycerin, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

[0029] Examples of the silicone oil include linear polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), silicone resins that form a three-dimensional network structure, silicone rubber, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), and acrylic silicones.

[0030] Examples of the liquid oils and fats include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, Japanese kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, and triglycerin.

[0031] The fragrance may be, but is not limited to, a natural fragrance obtained from animals or plants, a synthetic fragrance produced by chemical synthesis, or a compound fragrance which is a mixture thereof. By blending a fragrance, a cosmetic product with excellent fragrance longevity can be obtained.

[0032] Specific examples of the fragrances include acetivenol, anisaldehyde, anethole, amyl acetate, amyl salicylate, allyl amyl glycolate, allyl caproate, aldehydes C6-20, ambrettelide, ambroxan, ionone, isoe super, eugenol, auranthiol, galaxolide, calone, coumarin, geraniol, geranyl acetate, sandalore, santalol, sandera, cyclamen aldehyde, cis-3-hexenyl acetate, cis-3-hexenol, citral, citronellol ... Neryl acetate, citronellol, cineole, dihydromyrcenol, jasmolactone, cinnamic alcohol, cinnamic aldehyde, styrallyl acetate, cedryl acetate, cedrol, damascone, damascenone, decalactone, terpinyl acetate, terpineol, tonalid, triplal, nerol, bacdanol, vanillin, hydroxycitronellal, phenylethyl acetate, phenylethyl alcohol, hexyl salicylate, vetiveryl acetate, hedione, heliotropin, helional , Vertfix, Benzyl Acetate, Benzyl Salicylate, Benzyl Benzoate, Pentalid, Pentalid, Bornyl Acetate, Myall, Musk Ketone, Methyl Anthranilate, Methyl Dihydrojasmonate, Yara Yara, Lime Oxide, Linalyl Acetate, Linalool, Limonene, Lyral, Lilial, Rose Oxide, Rhodinol, Angelica Oil, Anise Oil, Armoise Oil, Basil Oil, Bay Oil, Bergamot Oil, Calamus Oil, Camphor Oil, Cananga Oil, Cardamom Oil, Cassia oil, cedarwood oil, celery oil, chamomile oil, cinnamon oil, clove oil, coriander oil, cumin oil, dill oil, elemi oil, estragon oil, eucalyptus oil, fennel oil, fenugreek oil, galbanum oil, geranium oil, ginger oil, grapefruit oil, guaiac wood oil, cypress oil, cypress oil, juniper berry oil, lavandin oil, lavender oil, lemon oil, lime oil, mandarin oil, ziram oil, fir oil,Peppermint oil, spearmint oil, mill oil, myrtle oil, nutmeg oil, oakmoss oil, olibanum oil, opoponax oil, orange oil, parsley oil, patchouli oil, pepper oil, perilla oil, petitgrain oil, neroli oil, orange flower oil, pimento oil, allspice oil, pine oil, rose oil, rosemary oil, clary sage oil, sage oil, sandalwood oil, styrax oil, tagetes oil, thyme oil, tuberose oil, valerian oil, vetiver oil, violet leaf oil, wintergreen oil, wormwood oil, ylang-ylang oil, yuzu oil, cassie absolute, genée absolute, hyacinth absolute, inmortelle absolute, jasmine absolute, jonquil absolute, narcissus absolute, rose absolute, violet leaf absolute, benbenzoin, etc.

[0033] Examples of the oil-soluble ultraviolet absorber include benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid (PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, and N,N-dimethyl PABA butyl ester; anthranilic acid-based ultraviolet absorbers such as homomenthyl-N-acetylanthranilate; amyl salicylate, menthyl salicylate, homomenthyl salicylate, and octyl salicylate; Salicylic acid-based ultraviolet absorbers such as ethyl salicylate, phenyl salicylate, benzyl salicylate, and p-isopropanol phenyl salicylate; octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl Cinnamic acids such as p-methoxycinnamate, 2-ethylhexyl-p-methoxycinnamate, 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-di-paramethoxycinnamate, and 3,4,5-trimethoxycinnamate 3-methyl-4-[methylbis(trimethylsiloxy)silyl]butyl UV absorbers such as 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenylbenzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, and octocrylene.

[0034] The amount of oily component used in the present invention may be 0, but when it is added for the purpose of fragrance or improving the feel in use, it is preferably 0.01 to 0.5% by mass. If the amount of such component is too much, there is a concern about stability, and if it is too little, the above-mentioned effects may not be exhibited.

[0035] The water used in the present invention constitutes the continuous phase of the opaque cosmetic preparation according to the present disclosure. The water is not particularly limited, and examples thereof include purified water, ion-exchanged water, and tap water.

[0036] The method for producing the liquid cosmetic of the present invention is not particularly limited, and the cosmetic can be produced according to a method for producing ordinary cosmetics. Furthermore, the amount of the cosmetic of the present invention to be applied to the skin and the method of use are not particularly limited, and the cosmetic can usually be used by applying an appropriate amount several times a day.

[0037] In the present invention, the slightly cloudy to cloudy aqueous cosmetic preparation refers to one having an absorbance of 0.06 or more at a wavelength of 660 nm.

[0038] The liquid cosmetic of the present invention can be used, for example, but is not limited to, skin care products, hair products, makeup products, UV protection products, etc. The shape (form) of a product using the opaque liquid cosmetic of the present invention is also not particularly limited, and can be used in products such as liquid, emulsion, cream, solid, paste, gel, multi-layered, mousse, spray, etc.

[0039] The cosmetic of the present invention may contain one or more aqueous or oily components commonly used in the cosmetic field, as needed. Examples of aqueous and oily components include, but are not limited to, moisturizers, water-soluble polymers, surfactants, solid, semi-solid, and liquid oils, higher alcohols, oil-soluble gelling agents, clay minerals, resins, film-forming agents, UV absorbers, powders, pigments, dyes, coloring materials, preservatives, antibacterial agents, antioxidants, salts, pH adjusters, chelating agents, fragrances, refreshing agents, antiperspirants, anti-inflammatory agents, skin activators, skin-beautifying ingredients, and various extracts. [Example]

[0040] The present invention will be further described below with reference to examples, but the present invention is not limited to these examples.

[0041] 1. Preparation of cosmetics to be used in evaluation tests Cosmetics used in the evaluation tests were prepared as Examples 1 to 19 shown in Table 1 below and Comparative Examples 1 to 4 shown in Table 2 below.

[0042] [Table 1]

[0043] [Table 2]

[0044] [Preparation of Cosmetics (Example 1)] 2.00% by mass of sodium lysine dilauramidoglutamate, 4.00% by mass of water, and 34.0% by mass of glycerin were mixed, and 20.00% by mass of polyglyceryl-2 isostearate was gradually added while stirring with a disper. After sufficient stirring, the remaining water was gradually added while continuing to stir, and the cosmetic preparation of Example 1 was obtained.

[0045] [Preparation of Cosmetics (Example 2)] A cosmetic preparation of Example 2 was obtained in the same manner as in Example 1, except that the contents were 0.45% by mass of sodium lysine dilauramidoglutamate, 1.05% by mass of water, 8.50% by mass of glycerin, and 5.00% by mass of polyglyceryl-2 isostearate.

[0046] [Preparation of Cosmetics (Example 3)] The cosmetic preparation of Example 3 was obtained in the same manner as in Example 1, except that the amounts were 0.09% by mass of sodium lysine dilauramidoglutamate, 0.21% by mass of water, 1.70% by mass of glycerin, and 1.00% by mass of polyglyceryl-2 isostearate.

[0047] [Preparation of Cosmetics (Example 4)] The cosmetic preparation of Example 4 was obtained in the same manner as in Example 1, except that the contents were 0.01% by mass of sodium lysine dilauramidoglutamate, 0.02% by mass of water, 0.17% by mass of glycerin, and 0.10% by mass of polyglyceryl-2 isostearate.

[0048] [Preparation of Cosmetics (Example 5)] The cosmetic preparation of Example 5 was obtained in the same manner as in Example 2, except that 0.50% by mass of isononyl isononanoate was also added when polyglyceryl-2 isostearate was added.

[0049] [Preparation of Cosmetics (Example 6)] A cosmetic preparation of Example 6 was obtained in the same manner as in Example 5, except that the amount of isononyl isononanoate was 0.10% by mass.

[0050] [Preparation of Cosmetics (Example 7)] A cosmetic preparation of Example 7 was obtained in the same manner as in Example 5, except that the amount of isononyl isononanoate was 0.01% by mass.

[0051] [Preparation of Cosmetics (Example 8)] A cosmetic preparation of Example 8 was obtained in the same manner as in Example 2, except that isononyl isononanoate was used in an amount of 0.50% by mass of macadamia nut oil.

[0052] [Preparation of Cosmetics (Example 9)] A cosmetic preparation of Example 9 was obtained in the same manner as in Example 8, except that the amount of macadamia nut oil was 0.10% by mass.

[0053] [Preparation of Cosmetics (Example 10)] A cosmetic preparation of Example 10 was obtained in the same manner as in Example 8, except that the macadamia nut oil was added at 0.01% by mass.

[0054] [Preparation of Cosmetics (Example 11)] A cosmetic preparation of Example 11 was obtained in the same manner as in Example 2, except that isononyl isononanoate was added in an amount of 0.50% by mass to olive oil.

[0055] [Preparation of Cosmetics (Example 12)] A cosmetic preparation of Example 12 was obtained in the same manner as in Example 11, except that the amount of olive oil was 0.10% by mass.

[0056] [Preparation of Cosmetics (Example 13)] The cosmetic of Example 13 was obtained in the same manner as in Example 11, except that the olive oil content was changed to 0.01% by mass.

[0057] [Preparation of Cosmetics (Example 14)] A cosmetic preparation of Example 14 was obtained in the same manner as in Example 2, except that isononyl isononanoate was replaced with 0.50% by mass of bakuchiol.

[0058] [Preparation of Cosmetics (Example 15)] The cosmetic of Example 15 was obtained in the same manner as in Example 14, except that the bakuchiol content was 0.10% by mass.

[0059] [Preparation of Cosmetics (Example 16)] The cosmetic of Example 16 was obtained in the same manner as in Example 14, except that the bakuchiol content was 0.01% by mass.

[0060] [Preparation of Cosmetics (Example 17)] A cosmetic preparation of Example 17 was obtained in the same manner as in Example 2, except that isononyl isononanoate was used as the fragrance at 0.50% by mass.

[0061] [Preparation of Cosmetics (Example 18)] The cosmetic of Example 18 was obtained in the same manner as in Example 17, except that the fragrance was added at 0.10% by mass.

[0062] [Preparation of Cosmetics (Example 19)] The cosmetic of Example 19 was obtained in the same manner as in Example 17, except that the fragrance was added at 0.01% by mass.

[0063] [Preparation of Cosmetics (Comparative Example 1)] A cosmetic preparation of Comparative Example 1 was obtained in the same manner as in Example 2, except that 5.00 mass % of polyglyceryl-10 isostearate was blended in place of polyglyceryl-2 isostearate.

[0064] [Preparation of Cosmetic (Comparative Example 2)] A cosmetic preparation of Comparative Example 2 was obtained in the same manner as in Example 2, except that 5.00 mass % of isononyl isononanoate was also added when polyglyceryl-2 isostearate was added.

[0065] [Preparation of Cosmetic (Comparative Example 3)] A cosmetic preparation of Comparative Example 3 was obtained in the same manner as in Example 5, except that sodium lysine dilauroyl glutamate was not blended.

[0066] [Preparation of Cosmetic (Comparative Example 4)] A cosmetic preparation of Comparative Example 4 was obtained in the same manner as in Example 5, except that polyglyceryl-2 isostearate was not blended.

[0067] 2. Evaluation tests for water-based cosmetics (appearance and stability over time)

[0068] The cosmetic preparations of Examples 1 to 19 and Comparative Examples 1 to 4 were evaluated for appearance and stability over time.

[0069] 1) Evaluation of appearance The absorbance of the cosmetics of Examples 1 to 19 and Comparative Examples 1 to 4 was measured using a multimode microplate reader (SpectraMax iD3, Molecular Devices, LLC., California, USA), and their appearance was evaluated. 200 μL of each of the aqueous cosmetics of Examples 1 to 19 and Comparative Examples 1 to 4 was dispensed into a 96-well plate, and the absorbance at 660 nm was measured. The cosmetic appearance was evaluated based on the absorbance values ​​obtained and classified as transparent, translucent, or opaque according to the following criteria. Absorbance 0.05 or less: Transparent Absorbance 0.06 or more and less than 0.50: Slightly cloudy Absorbance 0.50 or more: Cloudy

[0070] 2) Stability over time The aqueous cosmetics of Example 1 and Comparative Examples 1 to 8 were left to stand in thermostatic chambers at -5°C, 25°C, 40°C, and 50°C for one month, and then visually inspected for appearance and evaluated according to the following criteria. No change:○ Slight creaming: △ Obvious separation or creaming: No

[0071] 3. Results The absorbance was measured and the appearance and stability over time were evaluated for each of the aqueous cosmetics of Example 1 and Comparative Examples 1 to 8. The evaluation results are shown in Table 3 below.

[0072] [Table 3]

[0073] In Examples 1 to 19, aqueous cosmetics with excellent appearance were obtained, with a uniform, slightly cloudy or milky appearance. Furthermore, evaluation of stability over time showed that the aqueous cosmetics of each Example maintained their excellent appearance without any change over time over a wide temperature range (see Table 3).

[0074] On the other hand, in Comparative Example 1, in which a polyglycerol fatty acid ester with a different HLB was used instead of polyglyceryl-2 isostearate, a slightly cloudy or milky water-based cosmetic preparation could not be obtained, and instead had a transparent appearance (see Table 3).

[0075] In addition, in Comparative Example 2, in which an oily component was blended at 5% or more, a uniform, slightly cloudy to cloudy water-based cosmetic was obtained, but slight creaming was observed over time, making it unsuitable (see Table 3).

[0076] In Comparative Example 3, in which sodium lysine dilauramidoglutamate was not blended, the cosmetic composition turned into a cream when it was prepared, and it was not possible to obtain an aqueous cosmetic composition (see Table 3).

[0077] Furthermore, in Comparative Example 4, which did not contain polyglyceryl-2 isostearate, a slightly cloudy or cloudy water-based cosmetic preparation could not be obtained, and separation was confirmed (see Table 3). It was confirmed that the stability of the product was poor when stored at low temperatures (see Table 2). [Industrial Applicability]

[0078] The present invention makes it possible to provide a water-based cosmetic preparation that has a low viscosity, does not contain a water-soluble polymer, and can stably maintain a uniform, slightly cloudy or milky state for a long period of time over a wide temperature range, and that can be easily produced without the need for special equipment.

Claims

1. (a) Sodium lysine dilauramidoglutamate (b) Polyglyceryl-2 Isostearate (c) glycerin (d) Oily component (e) Water A milky white liquid cosmetic comprising:

2. 2. The cloudy liquid cosmetic preparation according to claim 1, wherein the blending amount of component (a) is 0.01 to 2.0% by mass, the blending amount of component (b) is 0.1 to 20.0% by mass, and the blending amount of component (c) is 0.17 to 34.0% by mass.

3. 3. The cloudy liquid cosmetic according to claim 1, which can be prepared by blending 0.01 to 0.5% by mass of any oily component in the composition.

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