Emulsified composition and cosmetic composition containing the same, and method for producing the emulsified composition

Abstract

To provide stable emulsion cosmetics that include a hydrolyzed protein-based additive without using surfactants.SOLUTION: An emulsion composition includes (a) a hydrolyzed protein-based additive, (b) dihydroxypropyl arginine or a salt thereof (c) an oil-based component, and (d) water.SELECTED DRAWING: None

Description

Technical Field

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[0001] The present invention relates to an emulsified composition and a cosmetic composition containing the same. The present invention also relates to a method for producing the emulsified composition. According to the present invention, an emulsified composition having a fine emulsified particle diameter can be obtained.

Background Art

[0002] Cosmetics are applied to the skin and the like for the purpose of cleaning the body and enhancing the appearance. For cosmetics, a hydrolyzed product of a protein or its derivative may be added in anticipation of various functionalities (Patent Document 1).

Prior Art Documents

Patent Documents

[0003] <​​​​​​​​​​​​​​​​​​​​​​This invention is based on these findings. Therefore, the present invention is [1] An emulsified composition comprising (a) a hydrolyzed protein additive, (b) dihydroxypropylarginine or a salt thereof, (c) an oily component, and (d) water. [2] (a) The content of hydrolyzed protein additives is 0.001 to 10% by weight based on the emulsified composition, (b) The content of dihydroxypropylarginine or its salt is 0.01 to 40% by weight based on the emulsified composition, (c) The content of oily components is 0.1 to 50% by weight based on the emulsified composition, and (d) The content of water is 30 to 99% by weight based on the emulsified composition. [1] The emulsified composition described above, [3](c) An emulsified composition according to [1] or [2], comprising 0.01 to 5% by weight of isostearic acid as an oily component, based on the emulsified composition. [4](e) The emulsified composition according to [1] or [2], further comprising 0.01 to 3% by weight of a thickening agent based on the emulsified composition. A cosmetic composition comprising the emulsifying composition described in [5][1] or [2]. [6] A method for producing an emulsified composition comprising mixing (a) a hydrolyzed protein additive, (b) dihydroxypropylarginine or a salt thereof, (c) an oily component, (d) water, and (e) a thickener, and [7] A method for producing an emulsified composition according to [6], comprising mixing a premix containing a first thickener, (c) an oily component, and (d) water with an aqueous phase mix containing a second thickener and (d) water. Regarding. [Effects of the Invention]

[0006] According to the present invention, a stable emulsified cosmetic composition containing a hydrolyzed protein product or a derivative thereof can be provided without using a surfactant. [Modes for carrying out the invention]

[0007] 《Hydrolyzed protein-based additive; component a》 The emulsifying composition of the present invention contains a hydrolyzable protein additive (hereinafter sometimes referred to as component a). Hydrolyzed protein additives are decomposition products or derivatives thereof obtained by hydrolyzing proteins. Any method can be used for hydrolysis, as long as it achieves the effects of the present invention. For example, acid hydrolysis using an acid such as hydrochloric acid, enzymatic hydrolysis using an enzyme such as a protease, or hydrothermal hydrolysis can be used. Examples of proteins to be hydrolyzed include fish-derived proteins, plant-derived proteins, animal-derived proteins, insect-derived proteins, and specifically, collagen, wheat, soybeans, silk, casein, peas, sesame, pearls, wool, etc. The protein to be hydrolyzed may be obtained by hydrolysis after it has been separated as a protein, or it may be obtained by hydrolysis before it has been separated as a protein. Furthermore, the protein may be synthetic or natural.

[0008] Examples of derivatives include derivatives obtained by hydrolyzing proteins and attaching a silyl group to the peptide; acylated derivatives obtained by hydrolyzing proteins and condensing various fatty acids to the peptide; cationized derivatives obtained by hydrolyzing proteins and attaching a quaternary ammonium group to the terminal amino acid of the peptide; and derivatives obtained by hydrolyzing proteins and ethyl esterifying the peptide. Among these, acylated derivatives obtained by hydrolyzing proteins and condensing various fatty acids to the peptide are preferred.

[0009] Specific hydrolyzed protein additives include, but are not limited to, the following: acylated derivatives such as sodium lauroyl hydrolyzed silk (CAS NO. 169590-94-7, e.g., product name Promois EFLS-F), potassium cocoyl hydrolyzed soy protein (e.g., product name Promois ESCP), potassium cocoyl hydrolyzed collagen (CAS NO. 68920-65-0, e.g., product name Promois EUCP), isostearoyl hydrolyzed silk AMP (e.g., product name Promois EF-118AMP), and isostearoyl hydrolyzed collagen AMPD (e.g., product name Promois EU-118D). Please note that Promois is a registered trademark.

[0010] The content of component a in the emulsified composition is not particularly limited as long as the effects of the present invention are obtained, but the lower limit is, for example, 0.001% by weight or more, more preferably 0.0015% by weight or more, even more preferably 0.002% by weight or more, even more preferably 0.005% by weight or more, and even more preferably 0.010% by weight or more. The upper limit is, for example, 10% by weight or less, preferably 8% by weight or less, more preferably 5% by weight or less, even more preferably 3% by weight or less, and even more preferably 1% by weight or less. A good emulsified state can be obtained with the above content. Furthermore, the lower limit and upper limit of the content can be combined to define the range of content of component a.

[0011] Dihydroxypropylarginine or its salt: component b The emulsifying composition of the present invention contains dihydroxypropylarginine or a salt thereof (hereinafter sometimes referred to as component b). Dihydroxypropylarginine is given by the following formula (1): [ka] It is a compound represented by [formula]. As dihydroxypropylarginine, its salts may also be used. The salts of dihydroxypropylarginine are salts with acids and are not limited as long as they are salts acceptable as cosmetics. Specific salts with acids include salts with inorganic acids or organic acids. Examples of inorganic acids and organic acids that can form salts include acetic acid, sulfuric acid, phosphoric acid, or hydrochloric acid, with hydrochloric acid being preferred. For example, preferred dihydroxypropylarginine HCl (CAS NO.787607-61-8, for example, product name Amithose R) as component (b) has the following formula (2):

Chemical formula

[0012] The content of the component (b) in the emulsion composition is not particularly limited as long as the effects of the present invention can be obtained. The lower limit is, for example, 0.01% by weight or more, more preferably 0.02% by weight or more, still more preferably 0.03% by weight or more, still more preferably 0.05% by weight or more, and still more preferably 0.10% by weight or more. The upper limit is, for example, 40% by weight or less, preferably 30% by weight or less, still more preferably 20% by weight or less, and still more preferably 10% by weight or less. By having the above content, good emulsion stability can be obtained. Also, the lower limit and the upper limit of the above content can be combined to form the content range of component (b).

[0013] The content ratio of component (b) to component (a) in the emulsion composition is not particularly limited as long as the effects of the present invention can be obtained. Based on 100 parts by weight of component (a), it is, for example, 100 parts by weight or more, and in certain embodiments, 200 parts by weight or more, and in certain embodiments, 500 parts by weight or more. The upper limit of the above content ratio is not limited, but based on 100 parts by weight of component (a), it is, for example, 5000 parts by weight or less, and in certain embodiments, 3000 parts by weight or less, and in certain embodiments, 1000 parts by weight or less.

[0014] Component b is often added for the purpose of maintaining a high moisturizing effect in cosmetics. It is surprising that good emulsion stability can be obtained by using Component a and Component b in combination.

[0015] 《Oil component: Component c》 The emulsion composition of the present invention contains an oil component (hereinafter sometimes referred to as Component c). The oil component is not particularly limited, and examples thereof include ester oils, hydrocarbon oils, animal and vegetable oils, aliphatic alcohols, higher fatty acids, silicones or silicone derivatives. The emulsion composition of the present invention can be used by mixing one or more of those contained in these oil components.

[0016] Examples of the ester oils mentioned above include isopropyl myristate, butyl myristate, isopropyl palmitate, butyl stearate, ethyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, decyl oleate, oleyl oleate, cetyl ricinoleate, isostearyl laurate, isotridecyl myristate, 2-hexyldecyl myristate, myris Isostearyl tinate, 2-octyldodecyl myristate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl ricinoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, hexyl isostearate, di-ethylhexanoate Diethylene glycol, ethylene glycol dioleate, propylene glycol dicaprylate, di(caprylic / capric acid) propylene glycol, propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol di2-ethylhexanoate, glyceryl tricaprylate, glyceryl tri2-ethylhexanoate, glyceryl tri(caprylic / capric acid), glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, tri2-ethylhexanoate Trimethylolpropane, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, dipentaerythritol fatty acid ester (1), 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate,2-Hexyldecyl Isostearate, Isostearyl Isostearate, 2-Octyldodecyl Isostearate, Lauryl Lactate, Myristyl Lactate, Cetyl Lactate, 2-Octyldodecyl Lactate, Triethyl Citrate, Acetyl Triethyl Citrate, Acetyl Tributyl Citrate, Tri-2-Ethylhexyl Citrate, Triisocetyl Citrate, Tri-2-Octyldodecyl Citrate, Diisostearyl Malate, 2-Ethylhexyl Hydroxystearate, Di-2-Ethylhexyl Succinate, Diisopropyl Adipate, Diisobutyl Adipate, Di-2-Ethyl Adipate Examples include hexyl sebacate, diethyl sebacate, diisopropyl sebacate, di-2-ethylhexyl sebacate, dibutyloctyl sebacate, cholesteryl stearate, cholesteryl isostearate, cholesteryl hydroxystearate, cholesteryl oleate, dihydrocholesteryl oleate, phytosteryl isostearate, phytosteryl oleate, isocetyl 12-stearoylhydroxystearate, stearyl 12-stearoylhydroxystearate, or isostearyl 12-stearoylhydroxystearate.

[0017] Examples of the hydrocarbon oils mentioned above include ozokerite, α-olefin oligomer, light isoparaffin, light liquid isoparaffin, synthetic squalane, vegetable squalane, squalane, ceresin, paraffin, polyethylene powder, polybutene, liquid isoparaffin, liquid paraffin, squalene, pristane, petrolatum, or microcrystalline wax.

[0018] Examples of the aforementioned animal and vegetable oils include avocado oil, corn oil, evening primrose oil, peach kernel oil, camellia oil, castor oil, safflower oil, cinnamon oil, almond oil, soybean oil, soybean germ oil, rapeseed oil, high-oleic rapeseed oil, corn oil, sesame oil, perilla oil, flaxseed oil, peanut oil, safflower oil, high-oleic safflower oil, sunflower oil, mid-oleic sunflower oil, high-oleic sunflower oil, cottonseed oil, Examples include grape seed oil, macadamia nut oil, hazelnut oil, pumpkin seed oil, walnut oil, camellia oil, tea seed oil, perilla oil, borage oil, olive oil, rice bran oil, wheat germ oil, palm oil, palm kernel oil, coconut oil, cocoa butter, egg yolk oil, mink oil, beef tallow, pork tallow, lard, chicken fat, milk fat, fish oil, seal oil, and algal oil, as well as fractionated oils, hydrogenated oils, and transesterified oils thereof.

[0019] Examples of aliphatic alcohols include linear saturated alcohols (e.g., lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, or behenyl alcohol), branched saturated alcohols (e.g., isostearyl alcohol, or octyldodecanol), or unsaturated alcohols (e.g., oleyl alcohol), which are alcohols with 12 to 22 carbon atoms (so-called higher alcohols).

[0020] Examples of the aforementioned higher fatty acids include linear saturated fatty acids (e.g., lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, 12-hydroxystearic acid), branched saturated fatty acids (e.g., isostearic acid), unsaturated fatty acids (e.g., oleic acid, linoleic acid, linolenic acid, undecylenic acid, eicosapentaenoic acid, docosahexaenoic acid), tallic acid, lanolinic acid, and others.

[0021] Examples of the silicone or silicone derivative include methylpolysiloxane, dimethylsiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, methylaminopropylsiloxane, aminoethylaminopropylmethylsiloxane, silicone rubber, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpolysiloxane, highly polymerized methylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, decamethylpolysiloxane, or methyl(aminopropyl)siloxane.

[0022] The content of the oily component in the emulsified composition is not particularly limited, but the lower limit is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, even more preferably 1% by weight or more, and even more preferably 2% by weight or more. The upper limit is also not particularly limited, but is preferably 50% by weight or less, more preferably 40% by weight or less, even more preferably 30% by weight or less, and even more preferably 20% by weight or less. An optimal emulsified composition can be produced by having the above content. Furthermore, the lower limit and upper limit of the content can be combined to define the range of content of component c.

[0023] The emulsifying composition of the present invention preferably contains isostearic acid as the oily component. The oily component containing isostearic acid can further reduce the size of the emulsified particles in the emulsifying composition. The content of isostearic acid in the emulsified composition is not limited, but the lower limit is, for example, 0.01% by weight or more, preferably 0.02% by weight or more, more preferably 0.05% by weight or more, even more preferably 0.1% by weight or more, even more preferably 0.2% by weight or more, even more preferably 0.25% by weight or more, and even more preferably 0.3% by weight or more, based on the emulsified composition. The upper limit is also not limited, but for example, 5% by weight or less, preferably 4.5% by weight or less, and even more preferably 4.0% by weight or less, based on the emulsified composition. By having the above content, it is possible to prepare an emulsified composition with a fine emulsion particle size. Furthermore, the lower limit and upper limit of the content can be combined to define the range of isostearic acid content.

[0024] 《Water: Component d》 The emulsifying composition of the present invention contains water (hereinafter sometimes referred to as component d). The content of component d in the emulsified composition is not particularly limited as long as the effects of the present invention are obtained, but the lower limit is, for example, 30% by weight or more, more preferably 45% by weight or more, even more preferably 50% by weight or more, even more preferably 55% by weight or more, and even more preferably 60% by weight or more. The upper limit is, for example, 99% by weight or less, and 95% by weight or less. A good emulsified state can be obtained with the above content. Furthermore, the lower limit and upper limit of the content can be combined to define the range of content of component d.

[0025] Thickening agent: ingredient e The emulsifying composition of the present invention preferably contains a thickening agent (hereinafter sometimes referred to as component e). As a thickening agent, those used in the field of cosmetics can be used, insofar as the effects of the present invention are obtained. Specifically, for example, plant-derived polymers such as gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, gellan gum, and carrageenan; Microbial polymers such as xanthan gum, dextran, succinoglucan, pullulan, and bio-sodium hyaluronate; Animal-derived polymers such as albumin and gelatin; Starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch; Cellulose-based polymers such as methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, sodium carboxymethylcellulose, and crystalline cellulose; Alginate-based polymers such as sodium alginate and propylene glycol alginate; Vinyl polymers such as polyvinyl alcohol, polyvinyl acetate, polyvinyl methyl ether, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymers, and carboxyvinyl polymers; Acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylate alkanolamine, alkyl methacrylate and dimethylaminoethyl methacrylate copolymer, poly2-acrylamido-2-methylpropanesulfonic acid, and polymethacryloyloxytrimethylammonium; and A polymer containing 2-methacryloyloxyethyl phosphorylcholine as a monomer. You can use it. Among these, carboxyvinyl polymer (carbomer), xanthan gum, (acroyldimethyltaurate ammonium / VP) copolymer, and / or carrageenan are preferred.

[0026] The content of component e in the emulsified composition is not particularly limited as long as the effects of the present invention are obtained, but the lower limit is, for example, 0.01% by weight or more, more preferably 0.05% by weight or more, and even more preferably 0.10% by weight or more. The upper limit is, for example, 3% by weight or less, more preferably 2% by weight or less, and even more preferably 1% by weight or less. The emulsification state of the emulsified composition can be further improved by having the above content. In addition, the lower limit and upper limit of the content can be combined to define the range of the content of component e.

[0027] When adding component e to the emulsified composition, it is preferable to mix a first premix containing a first thickener, (c) an oily component, and (d) water with a second mix containing a second thickener and (d) water. Doing so can further improve the emulsification state of the emulsified composition. When preparing the first premix, it is preferable to first add the first thickener to (d) water, and then add the mixture to (c) an oily component and mix. The first thickener and the second thickener may be the same thickener or may be different.

[0028] The content ratio of the first thickener to the second thickener in the emulsified composition is not particularly limited as long as the effects of the present invention are obtained, but is, for example, 0.1 parts by weight or more, preferably 0.2 parts by weight or more, more preferably 0.5 parts by weight or more, and even more preferably 1 part by weight or more, per 100 parts by weight of the second thickener. The upper limit of the content ratio is not limited, but is 10 parts by weight or less, in some embodiments 5 parts by weight or less, in some embodiments 3 parts by weight or less, and in some embodiments 2 parts by weight or less, per 100 parts by weight of the second thickener.

[0029] Cosmetic composition The cosmetic composition of the present invention may contain the emulsifying composition, or may consist of the emulsifying composition. The cosmetic composition is an emulsifying cosmetic and includes, but is not limited to, skincare cosmetics such as lotions, creams, cleansers, packs, massage products, detergents, deodorants, and hand creams; makeup cosmetics such as makeup bases, foundations, blushes, eye colors, mascaras, eyeliners, eyebrow products, and lipsticks; hair cosmetics such as rinses, treatments, and styling agents; antiperspirant cosmetics; and ultraviolet protection cosmetics such as sunscreens, sunscreen lotions, and sunscreen creams.

[0030] In addition to the essential components mentioned above, the cosmetic composition of the present invention may also contain other components commonly used in cosmetics, as long as they do not impair the effects of the present invention. Other components include humectants (e.g., trimethylglycine, concentrated glycerin, sorbitol, xylitol, hyaluronic acid, sodium pyrrolidone carboxylate, ceramides, hydrolyzed keratin), colorants (e.g., pigments or dyes), pearlescent luster imparting agents (e.g., glycol distearate or ethylene glycol distearate), salts (e.g., sodium chloride), plant extracts, preservatives, vitamins, fragrances, UV absorbers, antioxidants, humectants, chelating agents, and pH adjusters (e.g., citric acid or tartaric acid). [Examples]

[0031] The present invention will be specifically described below with reference to examples, but these examples are not intended to limit the scope of the invention. Unless otherwise specified, % refers to weight %.

[0032] Examples 1-9, Comparative Examples 1-5 In this example, an emulsified composition was prepared with the component composition shown in Table 1. ·Raw materials used (Component a) Promois EFL S-C (Sodium Lauroyl Silk Amino Acids (20%)) Promois EFL S-F (Sodium Lauroyl Hydrolyzed Silk (20%)) Promois ESCP (Cocoyl Hydrolyzed Soy Protein K (25%)) Promois EUCP (Cocoyl Hydrolyzed Soy Protein K, Hydrolyzed Collagen K (30%)) Promois EF-118AMP (Isostearoyl Hydrolyzed Silk AMP (25%)) Promois EU-118D (Isostearoyl Hydrolyzed Collagen AMPD (25%)) * "20%" refers to the amount of ingredient a in the product. For example, Promois EFLS-C contains 20% by weight of sodium lauroyl silk amino acids. (component b) Amitose R (Dihydroxypropylarginine HCl) *Amitose is a registered trademark. Amitose® contains 30% by weight of dihydroxypropylarginine HCl. ·Preparation method After preparing the aqueous phase premix and the oil phase premix separately, the aqueous phase premix and the oil phase premix were stirred and mixed using a disperser stirrer (1000 rpm). Then, the mixture was added to the aqueous phase mix and stirred. • Evaluation method The aqueous phase premix and oil phase premix were stirred and mixed using a disperser stirrer (1000 rpm), and the mixture was allowed to stand at room temperature for 1 minute. The emulsion particle size (μm) was then examined under a microscope. A smaller emulsion particle size indicates better emulsion stability. After observing the particle size of the emulsified mixture, the mixture judged to be emulsified was added to the aqueous phase mix and stirred to prepare the emulsified composition. This emulsified composition was left to stand at room temperature for 1 day or at 50°C for 1 week, and the appearance of each was observed to evaluate the emulsification stability. ○ indicates good emulsification stability, and × indicates separation into aqueous and oil phases. The results are shown in Table 1.

[0033] [Table 1]

[0034] Comparative Example 1, which did not contain component b, Comparative Examples 2-4, which had glycerin, 1,3-butylene glycol, or xylitol added instead of component b, respectively, and Comparative Example 5, which did not contain component a, all failed to emulsify after mixing the aqueous phase premix with the oil phase premix. Examples 1-9, which included components a-d, were confirmed to emulsify after mixing the aqueous phase premix and the oil phase premix. Furthermore, Examples 2-9 showed good emulsification stability, as the aqueous phase and oil phase did not separate even after being left to stand at 50°C for one week after being added to the aqueous phase mix.

[0035] Examples 10-15, Comparative Example 6 In this example, an emulsified composition was prepared with the component composition shown in Table 2. The raw materials used, preparation method, and evaluation method were the same as in Examples 1-9 and Comparative Examples 1-5. The results are shown in Table 2.

[0036] [Table 2]

[0037] Example 10, which contained isostearic acid, showed a finer emulsion particle size than Example 4, which did not contain isostearic acid, and Examples 11 and 12, which had neosoluacrio or isostearyl alcohol added instead of isostearic acid, respectively. Therefore, it was considered that including isostearic acid as an oil phase component improved the emulsion stability of the emulsion composition. In Comparative Example 6, in which isostearic acid was added instead of component b, neither the aqueous phase premix nor the oil phase premix emulsified after mixing.

[0038] Furthermore, Examples 13-15, each containing a thickener in the aqueous phase premix, exhibited finer emulsion particle sizes than Example 4, which did not contain a thickener in the aqueous phase premix. Therefore, it was concluded that including a thickener in the aqueous phase premix improves the emulsion stability of the emulsion composition.

[0039] Examples 16-24 In this example, an emulsified composition was prepared with the component composition shown in Table 3. The raw materials used, preparation method, and evaluation method were the same as in Examples 1-9 and Comparative Examples 1-5. The results are shown in Table 3.

[0040] [Table 3]

[0041] Examples 16-19 are examples in which the amount of Promois EFLS-C (lauroyl silk amino acid sodium (20%)) was changed. All of Examples 16-19 showed good emulsion stability. Example 19, in which 1% by weight of Promois EFLS-C was added, showed the best emulsion stability.

[0042] Examples 20-24 are examples in which the amount of Amitose R (dihydroxypropylarginine HCl) was changed. All of Examples 20-24 showed good emulsion stability. Example 24, in which 20% by weight of Amitose R was added, showed the best emulsion stability.

[0043] Example 25 In this example, a whitening serum was prepared with the component composition shown in Table 4. The raw materials used, preparation method, and evaluation method were the same as in Examples 1-9 and Comparative Examples 1-5, except that the emulsion stability of the whitening serum was evaluated after standing at room temperature, 0°C, and 50°C for one month. The results are shown in Table 4.

[0044] [Table 4]

[0045] The whitening serum of Example 25 had fine emulsion particle sizes of 3 μm or less and showed good emulsion stability. [Industrial applicability]

[0046] According to the present invention, a stable emulsified cosmetic composition containing hydrolyzed protein-based additives can be provided without using surfactants.

Claims

1. (a) Hydrolyzed protein additives, (b) Dihydroxypropylarginine or a salt thereof (c) Oily components, and (d) Water An emulsifying composition containing, but without surfactants, (a) The content of hydrolyzed protein additives is 0.001 to 10% by weight based on the emulsified composition, (b) The content of dihydroxypropylarginine or its salt is 0.3 to 40% by weight based on the emulsified composition, (c) The oily component content is 0.1 to 50% by weight according to the emulsified composition standards, and (d) The water content is 30 to 99% by weight according to the emulsified composition. Emulsifying composition.

2. (e) The emulsifying composition according to claim 1, further comprising 0.01 to 3% by weight of a thickening agent based on the emulsifying composition.

3. A cosmetic composition comprising the emulsifying composition according to claim 1 or 2.

4. A method for producing an emulsified composition comprising mixing (a) a hydrolyzed protein additive, (b) dihydroxypropylarginine or a salt thereof, (c) an oily component, (d) water, and (e) a thickener, wherein in the emulsified composition, (a) The content of hydrolyzed protein additives is 0.001 to 10% by weight based on the emulsified composition, (b) The content of dihydroxypropylarginine or its salt is 0.3 to 40% by weight based on the emulsified composition, (c) The oily component content is 0.1 to 50% by weight according to the emulsified composition standards, and (d) The water content is 30 to 99% by weight according to the emulsified composition, The method wherein the emulsifying composition does not contain a surfactant.

5. A premix comprising (c) an oily component and (d) water, (d) an aqueous phase mix containing a second thickening agent and water. A method for producing the emulsified composition according to claim 4, comprising mixing the following:

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