Cosmetic capsules

Abstract

The present invention relates to a method for preparing a capsule for cosmetics. The capsule for cosmetics prepared according to the present invention has the advantages of being able to stably carry effective ingredients and having a large size unlike the prior art, and having little foreign body sensation when broken.

Description

Technical Field

[0001] The present invention relates to a method for preparing a capsule for cosmetics, and to a capsule for cosmetics which can stably carry an effective ingredient and has a large size unlike the prior art and has little foreign body sensation when broken. Background Art

[0002] It is reported that encapsulation is a method used to solve the problem that the active ingredients lose their inherent properties due to factors such as light and heat during the storage of cosmetics, or the activity decreases due to low concentrations due to physical phenomena such as evaporation. This encapsulation has the advantages of not only improving the stability of the active ingredients, but also being able to activate the active ingredients at the time desired by the user, and is therefore used in many industrial fields. As a representative method for activating encapsulated active ingredients, there is a method of slowly or continuously releasing the active ingredients by destroying the outer wall of the capsule by factors such as pressure or inducing the formation of small holes in the outer wall of the capsule.

[0003] As a widely used capsule in the commercial industry, capsules based on melamine-formaldehyde resin are known, but there is a problem that toxic substance formaldehyde is inevitably present in the preparation process of microcapsules. Therefore, attention is being paid to new capsules that do not contain formaldehyde.

[0004] As a solution to this problem, liposome capsules, coacervation, microsponge, etc. have been proposed. However, these solutions have the following limitations: due to the surfactant and ion components in the dosage form, the stability of the capsule is reduced, the loading capacity of the active ingredient is reduced, or the release cannot be adjusted. Therefore, they are not enough to replace melamine capsules.

[0005] Although capsules based on inorganic materials such as silica have been proposed as new alternatives, their widespread use is problematic because the precursor organopolysiloxane is difficult to form an outer wall after moving to the interface as the amphiphilicity of the core increases. In addition, they have the following disadvantages: they are difficult to adjust the degree of activation of the active ingredient due to their low elasticity and high hardness.

[0006] On the other hand, organic polymer-based capsules such as polyacrylic acid (Polyacryl), polyurea (Polyurethane), and polyurethane (Polyurethane) are widely used in industry and are considered as alternatives due to their advantages of not using formaldehyde in the polymerization process, their wide versatility, and their excellent economic efficiency. However, due to the high elasticity of the polymer itself, the crushability caused by pressure decreases, so there are difficulties in the active expression of the active ingredients.

[0007] In addition to the above problems, the cosmetics industry is also trying to prepare capsules with a diameter of 100 μm or more in order to improve the aesthetic effect of the product and the visual satisfaction of consumers. However, when using a general preparation method, the use of outer wall materials increases when preparing the capsule, which has a foreign body sensation when the capsule is broken, thereby causing a problem of reduced consumer satisfaction.

[0008] Therefore, there is a need to develop a capsule material for cosmetics that has a low content of toxic substances and high versatility, is economical, has a large size and has a low foreign body sensation when broken.

[0009] [Prior art literature]

[0010] [Patent Document]

[0011] 1. Korean Patent Publication No. 10-2011-0084151 Summary of the invention

[0012] Technical issues

[0013] In order to solve the above problems, the present invention aims to provide a method for preparing a cosmetic capsule having the characteristics of less toxic substances, high versatility, good economic efficiency, large size and less foreign body sensation when broken.

[0014] Solution to the problem

[0015] The present invention provides a method for preparing a capsule for cosmetics, comprising:

[0016] a step of mixing a continuous phase comprising a polymer having two or more carboxyl groups and a dispersed phase comprising a multivalent cation carrier to prepare an emulsion; and

[0017] The pH of the emulsion is adjusted to 10 or less, followed by gelation.

[0018] Effects of the Invention

[0019] The present invention can provide a cosmetic capsule that has a low content of toxic substances and high versatility, is economically efficient, has a large size and has a low foreign body sensation when broken.

[0020] In addition, in the present invention, a natural polymer containing two or more carboxyl groups is used as the outer wall material of the capsule, so that an environmentally friendly cosmetic capsule can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram showing the preparation principle of the cosmetic capsule according to the present invention. DETAILED DESCRIPTION

[0022] Hereinafter, the constitution of the present invention will be described in detail.

[0023] The invention relates to a method for preparing a capsule for cosmetics.

[0024] According to the present invention, a cosmetic capsule can be prepared which has a low toxicity content and high versatility, is economical, has a large size and has a low foreign body sensation when broken.

[0025] This cosmetic capsule can be prepared by the following steps:

[0026] a step of preparing an emulsion by mixing a continuous phase comprising a polymer having two or more carboxyl groups and a dispersed phase comprising a multivalent cation carrier; and

[0027] The pH of the emulsion is adjusted to 10 or less, followed by gelation.

[0028] In one specific example, the cosmetic capsule according to the present invention can be prepared by the following steps:

[0029] A step of preparing a continuous phase comprising a polymer having two or more carboxyl groups (hereinafter, step 1);

[0030] a step of preparing a dispersed phase containing a polyvalent cation carrier (hereinafter, step 2);

[0031] a step of mixing the continuous phase and the dispersed phase to prepare an emulsion (hereinafter, step 3); and

[0032] After adjusting the pH of the emulsion to 10 or less, a gelation step (hereinafter referred to as step 4) is performed.

[0033] In the present invention, step 1 is a step of preparing a continuous phase. The continuous phase refers to a substance that remains in a liquid state at room temperature, and generally refers to one or more solvents used in the process.

[0034] In the present invention, the continuous phase contains a polymer having two or more carboxylic acid groups. The polymer having two or more carboxyl groups can be used as a capsule outer wall forming material generated in the gelation process described later. Specifically, the polymer having two or more carboxyl groups can improve the dispersion stability of the emulsion at the interface of the emulsion formed by mixing with the dispersed phase, and can meet with cations in the gelation process to form an outer wall through ionic bonds.

[0035] In a specific example, the polymer having two or more carboxyl groups may include a compound represented by the following Chemical Formula 1.

[0036] [Chemical formula 1]

[0037]

[0038] In the above Chemical Formula 1, R may include one or more selected from the group consisting of an alkylene group having 1 to 50 carbon atoms and a cyclic hydrocarbon group having 3 to 60 carbon atoms.

[0039] Unless otherwise specified, the above-mentioned "alkylene" refers to a straight or branched saturated or unsaturated hydrocarbon having a specific number of carbon atoms. In addition, unless otherwise specified, the above-mentioned "cyclic hydrocarbon" refers to a cyclic saturated or unsaturated hydrocarbon having a specific number of carbon atoms. The above-mentioned cyclic hydrocarbon may include aromatic compounds.

[0040] In one embodiment, the alkylene group having 1 to 50 carbon atoms or the cyclic hydrocarbon group having 3 to 60 carbon atoms may or may not contain one or more carboxyl groups and / or one or more heteroatoms.

[0041] In a specific example, the alkylene group having 1 to 50 carbon atoms may specifically be an alkylene group having 1 to 30 carbon atoms, and the cyclic hydrocarbon having 3 to 60 carbon atoms may specifically be a cyclic saturated hydrocarbon or unsaturated hydrocarbon (aromatic hydrocarbon) having 3 to 60 carbon atoms.

[0042] In a specific example, the polymer of Chemical Formula 1 may include one or more selected from the group consisting of sodium alginate, sodium acrylate, sodium carbomer, sodium acrylate / C10-30 alkyl acrylate crosspolymer, and sodium carboxymethyl cellulose.

[0043] In a specific example, based on the gross weight (100 weight parts) of continuous phase, the content of the polymer with two or more carboxyl groups can be 0.001 to 30 weight parts, 0.01 to 10 weight parts, 0.05 to 5 weight parts or 0.1 to 1 weight part. If the content of the above-mentioned polymer with two or more carboxyl groups is less than 0.001 weight part, the problem of being unable to form emulsion may occur, if it exceeds 30 weight parts, the problem of increased viscosity may occur. In addition, based on the gross weight (100 weight parts) of dispersed phase, the content of the above-mentioned polymer can be 0.001 to 100 weight parts, 0.005 to 75 weight parts, 0.01 to 50 weight parts or 1 to 10 weight parts.

[0044] In one specific example, the solvent of the continuous phase is not particularly limited as long as it can dissolve the polymer having two or more carboxyl groups, and water can be used in the present invention.

[0045] In the present invention, step 2 is a step of preparing a dispersed phase. The dispersed phase refers to a substance that remains in a liquid state at room temperature, and generally refers to one or more solvents used in the process.

[0046] In the present invention, the dispersed phase contains a polyvalent cation carrier. The polyvalent cation carrier can release the polyvalent cations at a pH of 10 or less during the gelation process described later. Specifically, the polyvalent cation carrier can be dispersed in the dispersed phase, and when the pH decreases thereafter, the polyvalent cations can be released to react with the polymer having two or more carboxyl groups to form the outer wall of the capsule.

[0047] In one embodiment, a polyvalent cation is a cation with two or more charges that can be connected to H + The above-mentioned polyvalent cation as an element with two or more charges when ionized can be selected from alkaline-earth metals, semimetals, transition metals, lanthanides and actinides, and is not limited thereto, but can be selected from Mg 2+ 、Al 3+ , Ca 2+ 、Zn 2+ , Ba 2+ and Sr 2+ wait.

[0048] In a specific example, the polyvalent cation carrier is not limited thereto, but can be divided into silicate compounds, oxide compounds, and salt compounds containing polyvalent cations.

[0049] The silicate compound refers to a compound containing polyvalent cations in the chemical formula and containing Si and O. The silicate compound can release polyvalent cations through acid-base reaction or redox reaction under the condition of pH 10 or below. As such silicate compounds, there can be used aluminum calcium magnesium potassium sodium zinc silicate, aluminum calcium sodium silicate, aluminum iron calcium magnesium germanium silicate, aluminum iron calcium magnesium zirconium silicate, aluminum iron silicate, aluminum silicate, ammonium fluorosilicate, ammonium silver zinc aluminum silicate, calcium aluminum borosilicate, calcium magnesium silicate, calcium silicate, calcium sodium borosilicate, calcium sodium phosphosilicate, calcium titanium boros ... Borosilicate、C24-28 AlkyldimethylsiloxyTrimethylsiloxysilicate、Lithium Magnesium Silicate、Lithium Magnesium Sodium Silicate、Magnesium Aluminometasilicate、Magnesium Aluminum Silicate、Magnesium Fluorosilicate、Magnesium Potassium Fluorosilicate、Magnesium Silicate、Magnesium Sodium FluorosilicateAt least one selected from the group consisting of sodium fluoride, magnesium trisilicate, silver borosilicate, sodium magnesium aluminum silicate, sodium magnesium fluoride, sodium magnesium silicate, sodium potassium aluminum silicate, sodium silver aluminum silicate, tromethamine magnesium aluminum silicate, zinc borosilicate, zinc silicate, aluminum silicate and zirconium silicate.

[0050] The oxide compound refers to a compound containing polyvalent cations in the chemical formula and the element O. The oxide compound can release the polyvalent cations through an acid-base reaction or a redox reaction under a pH of 10 or less. As such oxide compounds, there can be used an oxide compound selected from aluminum / calcium / manganese oxide, barium / calcium / silicon / titanium oxide, calcium cerium oxide, calcium oxide, calcium peroxide, aluminum magnesium oxide, magnesium / manganese / titanium oxide, magnesium / potassium / silicon / fluoride / hydroxide / oxide, magnesium / potassium / titanium oxide, sodium phosphate / zinc / calcium / silicon / aluminum / silver oxide, magnesium oxide, and magnesium peroxide. Peroxide).

[0051] In addition, the above-mentioned salt compound refers to a substance containing a polyvalent cation in the chemical formula and containing anions that form a complex with the polyvalent cation to make the total charge 0. The above-mentioned salt compound can release the polyvalent cation through an acid-base reaction or dissociation under the condition of pH 10 or less. As anions that can be used as such salt compounds, there can be used anions selected from fluoride, chloride, bromide, iodide, sulfide, sulfate, carbonate, phosphate, hydroxide, pantothenate, acetate, alginate, ascorbate, aspartate, behenate, benzoate, carboxymethylcellulose, Cellulose, Carnaubate, Carrageenan, Caseinate, Citrate, Cyclamate, EDTA, DNA, Dodecylbenzenesulfonate, Ferrite, Fructoborate, Fructoheptonate, Glucoheptonate, Gluconate, Glycerophosphate, Glycinate, Hydroxyapatite, Hydroxymethionine, Hypochlorite, Ketogluconate, Lactate, Laurate, Lauroyl taurine Taurate、Lignosulfonate、Monofluorophosphate、Montanate、Myristate、Pantetheine Sulfonate、Pantothenate、Paraben、PCA、Phosphoryl oligosaccharideOligosaccharides、Polygamma-Glutamate、Polyglutamate、Polyoxymethylene Pyrrolidone、Carbomer、Propionate、RNA、Salicylate、Beta-Sitosteryl Sulfate、PVM / MA Copolymer、Sorbate、Starch Isododecenylsuccinate、Starch Octenylsuccinate One or more selected from the group consisting of octenylsuccinate, stearate, stearyl lactylate, tartrate, thioglycolate, titanate, trifluoroacetate, undecylenate, xylenesulfonate, azelate and acrylate copolymer.

[0052] In one embodiment, the diameter of the multivalent cation carrier may be 1 nm to 500 μm, 1.5 nm to 250 μm, or 2 nm to 100 μm.

[0053] In a specific example, the polyvalent cation carrier can be a polyvalent cation carrier surface-treated with a surface treatment compound. In the present invention, the polyvalent cation carrier can be surface-treated to achieve uniform dispersion in the dispersed phase. At this time, as the above-mentioned surface treatment compound, non-covalent surface treatment compounds such as cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, disteardimonium chloride and aluminum stearate can be used; covalent surface treatment compounds such as halosilanes, alkoxysilanes, etc. can be used.

[0054] In a specific example, the content of the polyvalent cation carrier may be 0.002 to 30 parts by weight, 0.006 to 25 parts by weight, or 0.011 to 20 parts by weight based on the total weight of the dispersed phase (100 parts by weight). If the content of the polyvalent cation carrier is less than 0.002 parts by weight, the problem of not being able to form capsules may occur, and if it exceeds 30 parts by weight, the problem of forming capsules with a foreign body sensation due to rapid reaction may occur.

[0055] In a specific example, the solvent of the dispersed phase is not particularly limited as long as it is a solvent that is not mixed with the continuous phase but is incorporated. When water is used as the solvent of the continuous phase, the solvent of the dispersed phase can be selected from the group consisting of hydrocarbon series solvents; solvents containing ether groups; solvents containing ester groups; solvents containing ketone groups; solvents containing benzene; halogenated alkane series solvents; and silicone series solvents.

[0056] The hydrocarbon series solvents can be selected from compounds with linear or nonlinear structures, such as pentane, hexane, cyclohexane, heptane, octane, isododecane and dodecane, the solvent containing an ether group can be selected from ethyl ether, butyl ether and methyl-t-butyl ether, and the solvent containing an ester group can be selected from ethyl acetate, butyl acetate and ethyl butyrate. In addition, the solvent containing a ketone group can be methyl ethyl ketone, the solvent containing benzene can be selected from benzene, toluene and xylene, the haloalkane series solvent can be selected from dichloromethane, dichloroethane, chloroform and carbon tetrachloride, and the silicone series solvent can be selected from dimethyl silicone and cyclomethicone.

[0057] In a specific example, the dispersed phase of the present invention may further include an active ingredient in addition to the above-mentioned multivalent cation carrier. The above-mentioned active ingredient is a substance that is expected to be kept active by the generated capsule, and the above-mentioned active ingredient can then show its activity by destroying the outer wall of the capsule. When the active ingredient is liquid at room temperature, it can replace the dispersed phase as a solvent, otherwise it can be changed according to solubility. As such a solvent, one or more selected from the group consisting of spices, dyes, catalysts, antioxidants and drugs can be used.

[0058] In the present invention, step 3 is a step of mixing the above-mentioned continuous phase and dispersed phase to form an emulsion.

[0059] In a specific example, the content of the dispersed phase may be 1 to 90 parts by weight, 2 to 85 parts by weight, or 3 to 80 parts by weight based on the mixed weight of the dispersed phase and the continuous phase (100 parts by weight).

[0060] In one embodiment, the above steps can be performed by adding the dispersed phase into the continuous phase, and can be performed under stirring.

[0061] In one embodiment, the stirring can be performed at 20 to 30° C. or room temperature, at 1 to 16,000 RPM, 5 to 13,000 RPM, or 10 to 10,000 RPM.

[0062] In one embodiment, the above steps can be performed at pH 7 to 12.

[0063] In a specific example, the size of the prepared emulsion can be greater than 100 um.

[0064] In the present invention, step 4 is a step of adjusting the pH of the emulsion to 10 or less and then performing gelation.

[0065] The above steps can be used to prepare capsules for cosmetics. Figure 1 As shown, the capsule is formed at the interface formed after the continuous phase and the dispersed phase are mixed. At the above interface, the polymer having two or more carboxyl groups reacts (gels) with the multivalent cations released from the multivalent cation carrier to form the outer wall of the capsule. In the present invention, the foreign body sensation of the capsule can be improved by adjusting the gelation speed.

[0066] In a specific example, the polyvalent cation carrier releases the polyvalent cations under a pH condition of 10 or less, and the released polyvalent cations slowly gel at the interface with the polymer having two or more carboxyl groups, thereby forming a cosmetic capsule having less toxic substances and showing high versatility and economy. In particular, in the present invention, since the pH of the continuous phase decreases, resulting in the release of polyvalent cations, the gelation process is slow, and thus an outer wall with low strength but capable of stabilizing the interface can be formed, thereby preparing a capsule with less foreign body sensation.

[0067] In a specific example, the above steps can be performed at a pH below 10, a pH between 1 and 10, 2 and 9, or 3 and 8. In addition, the time interval between the emulsion formation in step 3 and the pH drop for forming the capsule outer wall can be 1 to 120 minutes, 2 to 90 minutes, or 3 to 60 minutes.

[0068] In one embodiment, the gelation for preparing the capsules may be performed at 0 to 100° C. for 1 to 1440 minutes, at 10 to 90° C. for 2 to 720 minutes, or at 20 to 80° C. for 3 to 360 minutes.

[0069] In a specific example, the gelation may be performed under stirring, and the stirring may be performed at 1 to 6000 RPM, 5 to 5000 RPM, or 10 to 4000 RPM.

[0070] Under the above conditions, at the interface between the continuous phase and the dispersed phase, multivalent cations are released as the pH decreases, and the outer wall is formed by gelation.

[0071] In a specific example, the gelation can be carried out in the presence of a dispersion stabilizer. The dispersion stabilizer can be used to improve the dispersibility of the capsules generated after the reaction. As such a dispersion stabilizer, one or more selected from the group consisting of gum arabic, polysaccharides, pectin, alginate, arabinogalactan, carrageenan, gellan gum, xanthan gum, guar gum, acrylate / acrylic acid polymers, starch, water-swelling clay, acrylate / aminoacrylate copolymers and mixtures thereof, maltodextrin; natural gums such as alginate esters; gelatin, protein hydrolysates and quaternized forms thereof; synthetic polymers and copolymers such as poly(vinyl pyrrolidone-vinyl acetate copolymer), poly(vinyl alcohol-vinyl acetate copolymer), poly(maleic acid), poly(ethylene oxide), poly(vinyl methyl ether), poly(vinyl ether-maleic anhydride copolymer), etc., and poly(ethylene imine), poly((meth) acrylamide), poly(ethylene oxide-dimethylsiloxane copolymer), poly(aminodimethylsiloxane), etc. can be used.

[0072] In the present invention, after gelation, a step of solidifying the outer wall of the capsule formed above may be further included. In this case, the time for solidification may be 5 minutes to 48 hours, 7 minutes to 36 hours, or 10 minutes to 24 hours.

[0073] In the present invention, the prepared cosmetic capsules may be further concentrated and / or dried as required.

[0074] In addition, the pH can be adjusted by an acid or alkaline substance, and the conditions are not limited. In addition, in the above process, the following components can be added: the components are required for cosmetics, such as preservatives, moisturizers, whitening effect components, wrinkle improvement components, etc. dissolved in the external phase, and the conditions are not limited.

[0075] In addition, the present invention relates to a cosmetic capsule prepared by the above-mentioned method for preparing the cosmetic capsule.

[0076] The diameter of the capsule for cosmetics according to the present invention may be 10 μm to 10,000 μm, 50 to 5,000 μm, or 100 to 1000 μm.

[0077] Additionally, the capsule wall thickness may be between 0.05 and 100 μm.

[0078] Implementation

[0079] Hereinafter, the present invention will be described in detail by way of examples. The following examples are only used to illustrate the present invention, and the scope of the present invention is not limited to the following examples. The present examples are provided to make the disclosure of the present invention complete and to fully explain the scope of the invention to those of ordinary skill in the art to which the present invention belongs, and the present invention is defined only by the scope of the claims.

[0080] Example

[0081] Examples 1 to 11. Preparation of capsules using polymers having two or more carboxyl groups and multivalent cation carriers

[0082] Cosmetic capsules were prepared using the ingredients in Tables 1 to 2 and the following method.

[0083] 1 Step: A polymer having two or more carboxyl groups is dispersed in 89.8 g of distilled water to prepare a continuous phase.

[0084] 2 Step: 0.1 g of the multivalent cation carrier was added to 9.9 g of dodecane to prepare a dispersed phase.

[0085] Step 3: Slowly add the dispersed phase to the continuous phase at 50 RPM to prepare an emulsion. Then, lower the pH to below 10 and perform gelation for 30 minutes to prepare a cosmetic capsule.

[0086] Comparative Example 1.

[0087] Cosmetic capsules were prepared using the ingredients in Table 1 and the following method.

[0088] 1 Step: Sodium Alginate was added to 80 g of distilled water to prepare a continuous phase.

[0089] 2. Step: Prepare 9.9 g of dodecane as a dispersed phase.

[0090] Step 3: Slowly add the dispersed phase to the continuous phase at 50 RPM to prepare an emulsion. Then, a solution of calcium chloride (CaCl2) dissolved in 9 g of distilled water is added to the emulsion, and then gelation is performed for 30 minutes to prepare a cosmetic capsule.

[0091] Comparative Example 2.

[0092] Cosmetic capsules were prepared using the ingredients in Table 1 and the following method.

[0093] 1 Step: Sodium Alginate was added to 89.8 g of distilled water to prepare a continuous phase.

[0094] 2. Step: Prepare 9.9 g of dodecane as a dispersed phase.

[0095] Step 3: Slowly add the dispersed phase to the continuous phase at 50 RPM to prepare an emulsion. Then, after adding magnesium aluminum silicate, the pH is lowered to below 10, and then gelation is performed for 30 minutes to prepare a cosmetic capsule.

[0096] [Table 1]

[0097]

[0098] [Table 2]

[0099]

[0100] Experimental Example 1. Comparison of the size and foreign body sensation of cosmetic capsules

[0101] For the cosmetic capsules prepared in Examples 1 to 11 and Comparative Examples 1 to 2, size, foreign body sensation, and stability were measured.

[0102] The size of the capsules was measured using a Mastersizer 3000 manufactured by Malvern. For the foreign body sensation, 20 skilled panelists performed a sensory evaluation on a scale ranging from 1 point (lowest foreign body sensation) to 10 points (highest foreign body sensation), and the average was taken to compare the foreign body sensation of each preparation method. In addition, for stability, the size change of the capsules stored at 40°C for 1 month and the oil in the capsules were quantified (using LC-MS) and compared.

[0103] The above measurement results are shown in Tables 3 and 4.

[0104] [Table 3]

[0105]

[0106] [Table 4]

[0107]

[0108] As shown in Tables 3 and 4 above, the capsules of Comparative Example 1, which is a general capsule preparation method, had a foreign body sensation and prepared small-sized capsules. In addition, Comparative Example 2 did not prepare capsules.

[0109] In Examples 1 to 11 according to the present invention, capsules with a size of 100 μm or more were prepared. Compared with Comparative Example 1, which is a general capsule preparation method, the capsules of the above examples had less foreign body sensation. In addition, it was confirmed that the size change was small during long-term storage, and the oil content change was small, thus showing high stability.

[0110] Industrial application possibilities

[0111] The present invention can provide a cosmetic capsule that has a low content of toxic substances and high versatility, is economically efficient, has a large size and has a low foreign body sensation when broken.

Claims

1. A method for preparing a cosmetic capsule, comprising: A step of preparing an emulsion by mixing a continuous phase comprising a polymer having two or more carboxyl groups and a dispersed phase comprising a multivalent cation carrier; as well as The step of adjusting the pH of the emulsion to below 10 and then gelling it, The multivalent cation carrier includes a silicate compound that contains multivalent cations and releases the multivalent cations through an acid-base reaction under a pH condition below 10.

2. The method for preparing the cosmetic capsule according to claim 1, wherein: The polymer having two or more carboxyl groups is a compound represented by the following Chemical Formula 1: [Chemical formula 1] In the above Chemical Formula 1, R includes one or more selected from the group consisting of an alkylene group having 1 to 50 carbon atoms and a cyclic hydrocarbon having 3 to 60 carbon atoms.

3. The method for preparing the cosmetic capsule according to claim 1, wherein: The content of the polymer having two or more carboxyl groups is 0.001 to 30 parts by weight relative to 100 parts by weight of the total weight of the continuous phase.

4. The method for preparing the cosmetic capsule according to claim 1, wherein: The continuous phase solvent is water.

5. The method for preparing the cosmetic capsule according to claim 1, wherein: The content of the polyvalent cation carrier is 0.002 to 30 parts by weight relative to 100 parts by weight of the total weight of the dispersed phase.

6. The method for preparing the cosmetic capsule according to claim 1, wherein: The solvent of the dispersed phase includes at least one selected from the group consisting of hydrocarbon series solvents; solvents containing ether groups; solvents containing ester groups; solvents containing ketone groups; solvents containing benzene; halogenated alkane series solvents; and silicone series solvents.

7. The method for preparing a cosmetic capsule according to claim 1, wherein: The dispersed phase also contains the active ingredient, The above-mentioned active ingredient includes at least one selected from the group consisting of fragrances, dyes, catalysts, antioxidants and drugs.

8. The method for preparing a cosmetic capsule according to claim 1, wherein: The emulsion preparation was carried out at 1 to 16,000 RPM.

9. The method for preparing a cosmetic capsule according to claim 1, wherein: The gelation is carried out under the conditions of 0 to 100°C, 1 to 1440 minutes and 1 to 6000 RPM.

10. A capsule for cosmetics, which is prepared by the preparation method according to claim 1, The diameter is 10 to 10000 μm and the wall thickness is 0.05 to 100 μm.

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