COMPOSITION FOR SOLID COSMETIC WITH HIGH-TEMPERATURE STABILITY AND IMPROVED FEELING OF USE AND PREPARATION METHOD THEREOF

Abstract

A composition for a solid cosmetic with improved high-temperature stability and good feeling of use, the composition contains an oily gelling agent. The oily gelling agent includes at least one selected from the group consisting of dibutylethylhexanoylglutamide, dibutyllauroylglutamide, dextrin palmitate, and mixtures thereof. When the oily gelling agent is dibutylethylhexanoylglutamide, the dibutylethylhexanoylglutamide is contained in an amount of 0.5 wt % to 1.7 wt % relative to the total weight of the composition.

Claims

1. A composition for a solid cosmetic with improved high-temperature stability and good feeling of use, the composition containing an oily gelling agent.

2. The composition according to claim 1, wherein the oily gelling agent comprises at least one selected from the group consisting of dibutylethylhexanoylglutamide, dibutyllauroylglutamide, dextrin palmitate, and mixtures thereof.

3. The composition according to claim 2, wherein when the oily gelling agent is dibutylethylhexanoylglutamide, the dibutylethylhexanoylglutamide is contained in an amount of 0.5 wt % to 1.7 wt % relative to the total weight of the composition.

4. The composition according to claim 2, wherein when the oily gelling agent is dibutyllauroylglutamide, the dibutyllauroylglutamide is contained in an amount of 0.5 wt % to 1.7 wt % relative to the total weight of the composition.

5. The composition according to claim 2, wherein when the oily gelling agent is a mixture of dibutylethylhexanoylglutamide and dibutyllauroyl glutamide, the dibutylethylhexanoylglutamide and the dibutyllauroyl glutamide are contained in an amount of 0.25 wt % to 0.85 wt % and an amount of 0.25 wt % to 0.85 wt %, respectively, with respect to the total weight of the composition.

6. The composition according to claim 2, wherein the oily gelling agent is prepared by using octyldodecanol that is an aliphatic alcohol as a solvent.

7. The composition according to claim 6, wherein the content of a solute of the oily gelling agent is 5 to 9 times the content of a solvent, and the solute is dissolved at a temperature of 110° C. to 120° C.

8. The composition according to claim 1, further containing an oil-soluble component, wherein the oil-soluble component comprises at least one selected from the group consisting of fat, wax, hydrocarbon, natural oil, ester, hydrocarbon, silicone, organic UV absorber, and mixtures thereof.

9. The composition according to claim 8, wherein the oil-soluble component is contained in an amount of 20% to 60% relative to the total weight of the composition.

10. The composition according to claim 1, wherein the composition for a solid cosmetic is a water-in-oil type cosmetic composition, an emulsifier contained in the composition comprises at least one selected from the group consisting of cetyl PEG/PPG-10/1 dimethiocone, PEG-10 dimethicone/vinyl dimethicone crosspolymer, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, polyglyceryl-3 polyricinoleate, polyglyceryl-3 diisostearate, and mixtures thereof.

11. The composition according to claim 10, wherein the cetyl PEG/PPG-10/1 dimethiocone and the PEG-10 dimethicone/vinyldimethicone crosspolymer are contained in an amount of 0.2 wt % to 0.8 wt % and an amount of 0.2 wt % to 0.4 wt %, respectively.

12. The method according to claim 10, wherein the polyglyceryl-3 polydimethylsiloxyethyl dimethicone is contained in an amount of 0.2 wt % to 0.8 wt %.

13. The method according to claim 10, wherein the polyglyceryl-3 polyricinoleate and the polyglyceryl-3 diisostearate are contained in an amount of 0.4 wt % to 0.8 wt % and an amount of 0.1 wt % to 0.2 wt %, respectively.

14. A method of preparing a composition for a solid cosmetic with improved high-temperature stability and good feeling of use, the method comprising: mixing an oily gelling agent, aliphatic alcohol, ester oil, and pigment base that are oily components for a first predetermined time at a stirring rate of 900 rpm to 1100 rpm using a mixer at a high temperature; adding a water-soluble component to the mixture of the oily components to prepare an emulsion while mixing the mixture of the oily components at a high temperature of 75° C. to 80° C. using a homomixer at a stirring rate of 1400 rpm to 1600 rpm for a second predetermined time; and adding a powder component including a pigment and an additive to the emulsion and further mixing at a stirring rate of 1400 rpm to 1600 rpm for a third predetermined time.

15. The method according to claim 14, wherein an emulsifier used to prepare the emulsion comprises at least one selected from the group consisting of cetyl PEG/PPG-10/1 dimethiocone, PEG-10 dimethicone/vinyl dimethicone crosspolymer, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, polyglyceryl-3 polyricinoleate, polyglyceryl-3 diisostearate, and mixtures thereof.

16. A method of preparing a composition for a solid cosmetic with improved high-temperature stability and good feeling of use, the method comprising: mixing an oily gelling agent, aliphatic alcohol, ester oil, and pigment base that are oily components for a first predetermined time at a stirring rate of 900 rpm to 1100 rpm using a mixer at a high temperature: further mixing the resulting mixture obtained through the previous mixing at a high temperature of 75° C. to 80° C. using a homomixer at a stirring rate of 1400 rpm to 1600 rpm for a second predetermined time; and adding a pigment, a powder component, and an additive to the mixture obtained through the previous mixing and further mixing at a stirring rate of 1400 rpm to 1600 rpm for a third predetermined time.

Description

DETAILED DESCRIPTION

[0043] Herein below, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. The embodiments described herein are provided so that the present disclosure can be made thorough and complete and that the spirit of the present disclosure can be fully conveyed to those skilled in the art. Throughout the drawings and description of the embodiments, like components are designated by like reference numerals.

[0044] A solid cosmetic composition having improved high-temperature stability and good feeling of use, according to an embodiment of the present disclosure, contains an oily gelling agent.

[0045] The oily gelling agent may include at least one selected from the group consisting of dibutylethylhexanoylglutamide, dibutyllauroylglutamide, dextrin palmitate, and mixtures thereof.

[0046] When the oily gelling agent is dibutylethylhexanoylglutamide, the dibutylethylhexanoylglutamide may be contained in an amount of 0.5 wt % to 1.7 wt % relative to the total weight of the cosmetic composition.

[0047] When the oily gelling agent is dibutyllauroylglutamide, the dibutyllauroylglutamide may be contained in an amount of 0.5 wt % to 1.7 wt % relative to the total weight of the cosmetic composition.

[0048] When the oily gelling agent is a mixture of dibutylethylhexanoylglutamide and dibutyllauroylglutamide, the dibutylethylhexanoylglutamide may be contained in an amount of 0.25 wt % to 0.85 wt % relative to the total weight of the cosmetic composition, and the dibutyllauroylglutamide may be contained in an amount of 0.25 wt % to 0.85 wt % relative to the total weight of the cosmetic composition.

[0049] The oily gelling agent may be prepared by using octyldodecanol that is an aliphatic alcohol as a solvent.

[0050] The content of a solute of the oily gelling agent may be 5 to 9 times the content of a solvent, and the solute may be configured to be dissolved at a temperature of 110° C. to 120° C.

[0051] The solid cosmetic composition with improved high-temperature stability and good feeling of use, according to the present disclosure, may further contain an oil-soluble component, in which the oil-soluble component may be composed of at least one selected from the group consisting of fat, wax, hydrocarbon, natural oil, ester, hydrocarbon, silicone, organic UV absorbers, and mixtures thereof.

[0052] The oil-soluble component may be included in an amount of 20% to 60% relative to the total weight of the cosmetic composition.

[0053] The solid cosmetic composition with improved high-temperature stability and good feeling of use can be prepared by a method described below.

[0054] First, when the solid cosmetic is of a water-in-oil type, the following steps are performed: [0055] mixing an oily gelling agent, aliphatic alcohol, ester oil, pigment base, etc., which are oily components for a first predetermined time at a stirring rate of 900 rpm to 1100 rpm using a mixer at a high temperature; [0056] adding a water-soluble component to the mixture of the oily components to prepare an emulsion while mixing the mixture of the oily components at a high temperature of 75° C. to 80° C. using a homomixer at a stirring rate of 1400 rpm to 1600 rpm for a second predetermined time; and [0057] adding a powder component including a pigment and an additive to the water-in-oil emulsion and mixing at a stirring rate of 1400 rpm to 1600 rpm for a third predetermined time.

[0058] In particular, in the case of a water drop type among the water-in-oil types, a single emulsifier component or two or less emulsifiers are used in a small amount.

[0059] Examples of the emulsifier include a PEG-based emulsifier and a polyglyceryl-based emulsifier. Among them, PEG-based emulsifiers include cetyl PEG/PPG-10/1 dimethicone and PEG-10 dimethicone/vinyl dimethicone crosspolymer. The polyglyceryl-based emulsifiers include polyglyceryl-3 polydimethylsiloxyethyl dimethicone, polyglyceryl-3 polyricinoleate, and polyglyceryl-3 diisostearate.

[0060] When the solid cosmetic is of an oil dispersion type, the following steps are performed: [0061] mixing an oily gelling agent, aliphatic alcohol, ester oil, pigment base, etc., which are oily components, are mixed for a first predetermined time at a stirring rate of 900 rpm to 1100 rpm using a mixer at a high temperature; [0062] further mixing the resulting mixture obtained through the previous mixing at a high temperature of 75° C. to 80° C. using a homomixer at a stirring rate of 1400 rpm to 1600 rpm for a second predetermined time; and [0063] adding a pigment, a powder component, and an additive to the mixture obtained through the previous mixing and further mixing at a stirring rate of 1400 rpm to 1600 rpm for a third predetermined time.

[0064] Tables 1 and 2 below relate to cycle test conditions and standards and methods for measuring hardness.

TABLE-US-00001 TABLE 1 Conditions Test conditions Note Cycle −4° C./25° C./44° C./25° C. 1 cycle = 23 hours for each condition, 96 hours, 4 days temperature change 1 hour)

TABLE-US-00002 TABLE 2 Measurement Classification standard Measurement method Hardness 2Φ, 5 mm, 2 Taking out samples stabilized cm/min at 25° C. for 6 hours and Perform measurement with Rheometer RTC-3002D

EXAMPLE 1, EXAMPLE 2, EXAMPLE 3, AND COMPARATIVE EXAMPLE 1

[0065] Gelling agents of Examples 1, 2, 3 and Comparative Example 1 were prepared according to the compositions shown in Table 3 below. Each of the mixtures was prepared by dissolving a solute at a high temperature (90° C. to 140° C.) by setting the solute-to-solvent ratio to 1:9.

TABLE-US-00003 TABLE 3 Comparative Classification Name of component Example 1 Example 2 Example 3 Example 1 Gelling agent Dibutylethylhexanoyl 5.00 10.0 glutamide Dibutyllauroyl 5.00 10.0 glutamide Dextrin palmitate 10.0 Solvent Octyldodecanol 90.0 90.0 90.0 90.0

[0066] The dissolution temperature, melting point, and hardness of each of the mixtures were checked immediately after the preparation, according to the type of the gelling agent dissolved in the aliphatic alcohol in each of Examples 1, 2, 3 and Comparative Example 1. The results are shown in Table 4 below.

TABLE-US-00004 TABLE 4 Dissolution Melting point Classification temperature of mixture Hardness Example 1 130° C. or 100° C. or 90 or more higher higher Example 2 130° C. 100° C. or 90 higher Example 3 120° C.  75° C. to 80° C. 60 Comparative  90° C.  55° C. to 60° C. 40 Example 1

[0067] From the results in Table 4, the dissolution temperature, melting point, and hardness of each mixture can be confirmed for each type of gelling agent. When the melting point of the mixture is 100° C. or higher, purified water or volatile components cannot be added during the preparation. In this case, the process is inevitably limited. Therefore, the temperature for the high-temperature process enabling proper preparation is 85° C. or lower. When taking into account such a temperature condition, the gelling agents of Example 3 and Comparative Example 1 are appropriate. When the hardness values of Example 3 and Comparative Example 1 are compared, it can be confirmed that the mixture of Example 3 exhibits a higher hardness.

EXAMPLE 3 AND COMPARISON EXAMPLES 2 TO 3

[0068] Mixtures of Example 3 and Comparative Examples 2 and 3 were prepared according to the compositions shown in Table 5 below. Each of the mixtures was prepared by dissolving a solute at a high temperature (100° C. or higher) by setting a solute-to-solvent ratio to 1:9

TABLE-US-00005 TABLE 5 Example Comparative Comparative Classification Name of component 3 Example 2 Example 3 Gelling agent Dibutyllauroyl 10.0 10.0 10.0 glutamide Solvent Octyldodecanol 90.0 Ethylhexyl palmitate 90.0 Cyclopentasiloxane 90.0

[0069] Aside from aliphatic alcohol used as a solvent in Example 3, ester oil was used in Comparative Example 2 and silicone oil was used in Comparative Example 3. The dissolution temperature, melting point and hardness of each of the mixtures were checked immediately after the preparation thereof. The results are shown in Table 6 below.

TABLE-US-00006 TABLE 6 Dissolution Melting point Classification temperature of mixture Hardness Example 3 120° C.  75° C. to 80° C.  60 Comparative 130° C. 100° C. or 115 Example 2 higher Comparative 150° C. or — — Example 3 higher

[0070] The results of Table 6 show that the mixture prepared according to Comparative Example 2 exhibits a sufficiently high hardness but has an excessively high melting point and the mixture prepared according to Comparative Example 3 exhibits an excessively high dissolution temperature which may cause the solvent to be volatilized. Therefore, the solvent used in Comparative Example 3 is not suitable. Therefore it is confirmed that the aliphatic alcohol used in Example 3 is suitable as the solvent.

EXAMPLES 4 TO 9

[0071] Mixtures of Examples 4 and 9 were prepared according to the compositions shown in Table 7 below. When preparing each of the mixtures, necessary components were dissolved at 100° C. or higher.

TABLE-US-00007 TABLE 7 Ex- Ex- Ex- Ex- Ex- Ex- Name of ample ample ample ample ample ample component 4 5 6 7 8 9 Dibutyllauroyl 10.0 10.0 10.0 10.0 10.0 10.0 glutamide Octyldodecanol 90.0 80.0 70.0 60.0 50.0 40.0

[0072] Examples 4 to 9 were to find the most suitable gelling agent and the most suitable solute-to-solvent ratio. The melting points of the mixtures according to the content of the solvent are shown in Table 8 below.

TABLE-US-00008 TABLE 8 Ex- Ex- Ex- Ex- Ex- Ex- ample ample ample ample ample ample Classification 4 5 6 7 8 9 Melting point 75° C. 80° C. 85° C. 85° C. 97° C. 100° C. of mixture to to or 90° C. 100° C. higher

[0073] On the basis of the results of Table 8, it was found that the smaller the content ratio suitable for prescription, the better. In addition, the melting point of the composition is preferably in the range of 80° C. to 90° C. in terms of the preparation process and the high-temperature stability of the formulation. Accordingly, it was found that Example 7 in which the content of the gelling agent was lowest and the melting point was within a suitable range is most suitable. That is, it is preferable to use the gelling agent and the solute-to-solvent ratio used in Example 8.

EXAMPLES 10 TO 14

[0074] Water-in-oil cosmetics of Examples 10 to 14 were prepared according to the compositions shown in Table 9 below.

TABLE-US-00009 TABLE 9 Classification Name of component Example 10 Example 11 Example 12 Example 13 Example 14 Gelling agent Dibutyllauroyl 0.400 0.800 1.000 1.500 2.000 Mixture glutamide Octyldodecanol 3.600 4.800 6.000 9.000 12.00 Structuring Microcrystalline wax 2.000 2.000 2.000 2.000 2.000 agent Synthetic wax 3.000 3.000 3.000 3.000 3.000 Disteadymonium 0.540 0.540 0.540 0.540 0.540 hectorite Emulsifier Cetyl PEG/PPG- 1.500 1.500 1.500 1.500 1.500 10/1 dimethicone Polyglyceryl-4 1.000 1.000 1.000 1.000 1.000 Isostearate Sorbitan Isostearate 0.500 0.500 0.500 0.500 0.500 Oil phase Phenyltrimethicone 10.00 10.00 10.00 10.00 10.00 Cyclopentasiloxane 3.000 3.000 3.000 3.000 3.000 Triethylhexanoin 5.000 5.000 5.000 5.000 5.000 Pigment Titanium dioxide 10.000 10.000 10.000 10.000 10.000 Red iron oxide 0.202 0.202 0.202 0.202 0.202 Yellow iron oxide 0.842 0.842 0.842 0.842 0.842 Black iron oxide 0.054 0.054 0.054 0.054 0.054 Water-soluble Disodium EDTA 0.050 0.050 0.050 0.050 0.050 component Magnesium sulfate 1.000 1.000 1.000 1.000 1.000 Component Purified water Balance Balance Balance Balance Balance Glycerin 8.000 8.000 8.000 8.000 8.000 Preservative Appropriate Appropriate Appropriate Appropriate Appropriate amount amount amount amount amount

[0075] The state of each composition immediately after preparation thereof according to the content of the mixture (i.e., gelling agent) in each of Examples 10 to 14, and time-dependent changes of each composition according to temperature were observed. The results are shown in Table 10 below.

TABLE-US-00010 TABLE 10 Classifi- Storage temperature Discharge test cation 25° C. 4° C. 44° C. 50° C. Cycle 44° C. 50° C. Exam- ⊚ ◯ Δ Δ Δ Abnor- Abnor- ple 10 mal mal Exam- ⊚ ⊚ ◯ ◯ ◯ Normal Normal ple 11 Exam- ⊚ ⊚ ⊚ ◯ ◯ Normal Normal ple 12 Exam- ⊚ ⊚ ⊚ ⊚ ◯ Normal Normal ple 13 Exam- ⊚ ◯ Δ X Δ Abnor- Abnor- ple 14 mal mal ⊚: very good, ◯: good, Δ: slight separation, X: separation

[0076] The optimal content of the gelling agent for a water-in-oil cosmetic composition can be determined on the basis of the results of Table 10, and it was found that Example 12 and Example 13 showed the optimal content on the basis of the storage temperatures and the results of the discharge tests. When the content of the gelling agent is lower than that of Example 11, the hardness is insufficient so that the cosmetic may be collapsed by a cutting blade at high temperature. On the other hand, as in Example 14, when the content of the gelling agent is higher than that of Example 13, since the melting point of the gelling agent increases, the emulsification becomes unstable. Therefore, the appropriate content of the gelling agent may be within a range of 0.5 wt % to 1.7 wt %.

EXAMPLE 15 AND COMPARISON EXAMPLES 14 AND 15

[0077] Water-in-oil cosmetics of Example 15 and Comparative Example 4 and 5 were prepared according to the compositions shown in Table 11 below.

TABLE-US-00011 TABLE 11 Name of Comparative Comparative Classification component Example 15 Example 4 Example 5 Gelling agent Dibutyllauroyl 1.500 1.500 1.500 Mixture glutamide Octyldodecanol 9.000 9.000 9.000 Structuring Microcrystalline 2.000 2.000 2.000 agent wax Synthetic wax 3.000 3.000 3.000 Disteadymonium 0.540 0.540 0.540 hectorite PEG-based Cetyl PEG/PPG- 0.300 0.100 1.000 Emulsifier 10/1 dimethicone PEG-10 0.300 0.300 0.300 dimethicone/vinyl dimethicone crosspolymer Oil phase Phenyltrimethicone 10.00 10.00 10.00 Caprylic/capric 2 2 2 triglycerides Cyclopentasiloxane 3.000 3.000 3.000 Triethylhexanoin 5.000 5.000 5.000 Pigment Titanium dioxide 10.000 10.000 10.000 Red iron oxide 0.202 0.202 0.202 Yellow iron oxide 0.842 0.842 0.842 Black iron oxide 0.054 0.054 0.054 Water-soluble Disodium EDTA 0.050 0.050 0.050 component Magnesium sulfate 1.000 1.000 1.000 Purified water Balance Balance Balance Glycerin 8.000 8.000 8.000 Preservative Appropriate Appropriate Appropriate amount amount amount

[0078] The state of each PEG-based water drop cosmetic immediately after preparation thereof according to the emulsifiers of Example 15 and Comparative Examples 4 and 5, and time-dependent changes of each cosmetic according to temperature were observed. The results are shown in Table 12 below.

TABLE-US-00012 TABLE 12 Storage temperature Discharge test Water bursting Classification 25° C. 4° C. 44° C. 50° C. Cycle 44° C. 50° C. phenomenon Example 15 ⊚ ⊚ ⊚ ◯ ◯ Normal Normal ⊚ Comparative ◯ Δ Δ X Δ Normal Abnormal ◯ Example 4 Comparative ⊚ ⊚ ⊚ ◯ ◯ Normal Normal Δ Example 5 ⊚: very good, ◯: good, Δ: slight separation, X: separation

[0079] On the basis of the results of Table 12, the optimal content of the PEG-based emulsifier in the water drop formulation was confirmed. In Comparative Example 4, since the content of the emulsifier was low, the water bursting effect was good, but the emulsified state was unstable. In Comparative Example 5, since the content of the emulsifier increased, the size of the emulsified particles decreased, and the water bursting effect was reduced. Therefore, the optimal content of the PEG-based emulsifier is composed of 0.2 wt % to 0.8 wt % of cetyl PEG/PPG-10/1 dimethicone and 0.2 wt % to 0.4 wt % of PEG-10 dimethicone/vinyl dimethicone crosspolymer.

EXAMPLES 16 AND 17 AND COMPARATIVE EXAMPLES 6 TO 9

[0080] Water-in-oil cosmetics of Examples 16 and 17 and Comparative Examples 6 to 9 were prepared according to the compositions shown in Table 13 below.

TABLE-US-00013 TABLE 13 Comparative Comparative Comparative Comparative Classification Name of component Example 16 Example 6 Example 7 Example 17 Example 8 Example 9 Gelling agent Dibutyllauroyl 0.600 0.600 0.600 1.000 1.500 2.000 Mixture glutamide Octyldodecanol 3.600 3.600 3.600 6.000 9.000 12.00 Structuring Microcrystalline wax 2.000 2.000 2.000 2.000 2.000 2.000 agent Synthetic wax 3.000 3.000 3.000 3.000 3.000 3.000 Disteadymonium 0.540 0.540 0.540 Hectorite Stearalkonium 0.252 0.252 0.252 Hectorite Polyglyceryl Polyglyceryl-3 0.300 0.100 1.000 emulsifier polydimethylsiloxy- ethyldimethicone Polyglyceryl-3 0.600 0.300 1.000 polyricinoleate Polyglyceryl-3 0.120 0.120 0.120 Diisostearate Oil phase Phenyltrimethicone 10.00 10.00 10.00 10.00 10.00 10.00 Caprylic/Capric 2.000 2.000 2.000 2.000 2.000 2.000 Triglycerides Cyclopentasiloxane 3.000 3.000 3.000 3.000 3.000 3.000 Triethylhexanoin 5.000 5.000 5.000 5.000 5.000 5.000 Pigment Titanium dioxide 10.00 10.00 10.00 10.00 10.00 10.00 Red iron oxide 0.200 0.200 0.200 0.202 0.202 0.202 Yellow iron oxide 0.840 0.840 0.840 0.842 0.842 0.842 Black iron oxide 0.050 0.050 0.050 0.054 0.054 0.054 Water-soluble Disodium EDTA 0.050 0.050 0.050 0.050 0.050 0.050 component Magnesium sulfate 1.000 1.000 1.000 1.000 1.000 1.000 Purified water Balance Balance Balance Balance Balance Balance Glycerin 8.000 8.000 8.000 8.000 8.000 8.000 Preservative Appropriate Appropriate Appropriate Appropriate Appropriate Appropriate amount amount amount amount amount amount

[0081] The state of each PEG-based water drop cosmetic immediately after preparation thereof according to polyglyceryl emulsifiers of Examples 16 and 17 and Comparative Examples 6 to 9, and time-dependent changes of each cosmetic according to temperature were observed. The results are shown in Table 14 below.

TABLE-US-00014 TABLE 14 Storage temperature Discharge test Water bursting Classification 25° C. 4° C. 44° C. 50° C. Cycle 44° C. 50° C. phenomenon Example 16 ⊚ ⊚ ⊚ ◯ ◯ Normal Normal ⊚ Comparative ◯ Δ Δ X Δ Abnormal Abnormal ◯ Example 6 Comparative ⊚ ⊚ ⊚ ⊚ ◯ Normal Normal Δ Example 7 Example 17 ⊚ ⊚ ◯ ◯ ◯ Normal Normal ⊚ Comparative ◯ Δ Δ X Δ Abnormal Abnormal ◯ Example 8 Comparative ⊚ ⊚ ⊚ ◯ ◯ Normal Normal Δ Example 9 ⊚: very good, ◯: good, Δ: slight separation, X: separation

[0082] On the basis of the results of Table 14, the optimal content of the polyglyceryl emulsifier in the water drop formulation was confirmed. In Comparative Examples 6 and 8, since the content of the emulsifier was low, the water bursting effect was good, but the emulsified state was unstable. In Comparative Examples 7 and 9, since the content of the emulsifier increased, the size of the emulsified particles decreased, and the water bursting effect was reduced. Therefore, the optimal content of the polyglyceryl emulsifier is composed of 0.2 wt % to 0.8 wt % of polyglyceryl-3 polydimethylsiloxyethyldimethicone and 0.1 wt % to 0.2 wt % of polyglyceryl-3 diisostearate, or 0.4 wt % to 0.8 wt % of Polyglyceryl-3 polyricinoleate and 0.1 wt % to 0.2 wt % of glyceryl-3 diisostearate.

EXAMPLES 18 TO 22

[0083] Oil dispersion cosmetics of Examples 18 to 22 were prepared according to the compositions shown in Table 15 below.

TABLE-US-00015 TABLE 15 Classification Name of component Example 18 Example 19 Example 20 Example 21 Example 22 Gelling agent Dibutyllauroyl 0.600 0.800 1.000 1.500 2.000 Mixture glutamide Octyldodecanol 3.600 4.800 6.000 9.000 12.00 Structuring Microcrystalline wax 2.000 2.000 2.000 2.000 2.000 agent Synthetic wax 3.000 3.000 3.000 3.000 3.000 Disteadymonium 0.540 0.540 0.540 0.540 0.540 hectorite Emulsifier Cetyl PEG/PPG- 0.300 0.300 0.300 0.300 0.300 10/1 dimethicone Oil phase Phenyltrimethicone 10.00 10.00 10.00 10.00 10.00 Cyclopentasiloxane 3.000 3.000 3.000 3.000 3.000 Triethylhexanoin 5.000 5.000 5.000 5.000 5.000 Pigment Titanium dioxide 10.000 10.000 10.000 10.000 10.000 Red iron oxide 0.202 0.202 0.202 0.202 0.202 Yellow iron oxide 0.842 0.842 0.842 0.842 0.842 Black iron oxide 0.054 0.054 0.054 0.054 0.054 Powder Silica 10.00 10.00 10.00 10.00 10.00 Mica Balance Balance Balance Balance Balance

[0084] The state of each composition immediately after preparation thereof according to the content of the mixture (i.e., gelling agent) in each of Examples 18 to 22, and time-dependent changes of each composition according to temperature were observed. The results are shown in Table 16 below.

TABLE-US-00016 TABLE 16 Classifi- Storage temperature Discharge test cation 25° C. 4° C. 44° C. 50° C. Cycle 44° C. 50° C. Exam- ⊚ ◯ Δ Δ Δ Normal Abnor- ple 18 mal Exam- ⊚ ⊚ ⊚ ⊚ ⊚ Normal Normal ple 19 Exam- ⊚ ⊚ ⊚ ⊚ ⊚ Normal Normal ple 20 Exam- ⊚ ⊚ ⊚ ◯ Δ Normal Abnor- ple 21 mal Exam- ⊚ ◯ Δ X Δ Abnor- Abnor- ple 22 mal mal ⊚: very good, ◯: good, Δ: slight separation, X: separation

[0085] The optimal content of the gelling agent for an oil dispersion cosmetic composition can be determined on the basis of the results of Table 16, and it was found that Example 19 and Example 20 showed the optimal content, on the basis of the storage temperatures and the results of the discharge tests.

[0086] According to the embodiments of the present disclosure, the solid cosmetic composition with improved high-temperature stability and good feeling of use and the preparation method thereof can provide a cosmetic that can maintain the structure thereof even at a high temperature of about 50° C. and thus has high temperature stability due to an increased melting point compared to existing cosmetic compositions. In addition, the cosmetic prepared from the cosmetic composition according to the present disclosure can withstand not only thermal stress at high temperatures but also physical stress caused by external forces.

[0087] In addition, even when the cosmetic is contained in a grinding container, the cosmetic can be readily shaved and discharged by a rotating cutting blade. The cosmetic does not give heavy feeling while having an increased hardness and can be lightly and thinly applied to the skin.

[0088] In addition, the cosmetic can provide a thin and soft feeling of use, thereby giving natural skin expression which is a recent cosmetic trend. In addition, since a small amount of a gelling agent is used to improve the hardness of a cosmetic instead of existing structuring agents composed of only wax-based materials, it is possible to increase the degree of freedom in designing a cosmetic composition.

[0089] Although the present disclosure has been described above with reference to the examples, it will be appreciated that those skilled in the art variously modify and change the examples of the present disclosure without departing from the spirit and scope of the present invention as set forth in the appended claims. Therefore, when modifications to the examples includes the elements of the claims of the present disclosure, it should be considered that all of the modifications fall within the technical scope of the present disclosure.