Stick-type emulsion cosmetic composition having reduced white trace

Abstract

The present invention relates to a stick-type cosmetic composition having a reduced white trace. The cosmetic composition has excellent long-term storage stability and can maintain a smooth appearance for a long time by significantly reducing a white trace, which may occur on the surface of an emulsion during emulsion formulation, by including an optimal combination of specific waxes or using a polyol.

Description

Stick-type cosmetic composition in an emulsified formulation with reduced whitening phenomenon

[0001] The present invention relates to a stick-type cosmetic composition in an emulsified formulation with reduced whitening phenomenon.

[0002] Maintaining a product's appearance, consistent with its initial appearance upon manufacturing or purchase, is crucial in any industry. This is particularly true in the cosmetics industry, where most products come into direct contact with the human body. Therefore, any changes in appearance, even if the product's performance remains unchanged, can trigger consumer anxiety. Therefore, maintaining a consistent product appearance over a long period of time is crucial for the cosmetics industry.

[0003] Stick-type cosmetics, in particular, present unique challenges regarding their appearance. Specifically, some of the ingredients may clump together on the surface, or some may phase separate, resulting in discoloration. These phenomena appear to be influenced by the compatibility between the wax and other ingredients in the stick-type cosmetic composition. However, the precise mechanisms underlying these phenomena remain unclear due to the complexity of multi-component systems.

[0004] Accordingly, the inventors of the present invention confirmed that when specific wax components are combined in an optimal amount, problems such as powdering, sweating, or discoloration do not occur, and further, they confirmed that no problems occur even when forming an emulsified formulation using polyol, thereby completing the present invention.

[0005] The purpose of the present invention is to provide a stick-type cosmetic composition in an emulsified formulation with reduced whitening phenomenon.

[0006] The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0007] According to an embodiment of the present invention, a stick-type cosmetic composition is provided in the form of an emulsified formulation with reduced whitening, which comprises a wax, wherein the wax comprises a synthetic wax.

[0008] According to another embodiment of the present invention, a stick-type cosmetic composition in the form of an emulsified formulation with reduced whitening phenomenon is provided, which comprises a polyol and is characterized by being an oil-in-polyol (O / P) type or an oil-in-polyol (P / O) type.

[0009] The stick-type cosmetic composition of the emulsified formulation of the present invention can maintain a smooth and clean appearance for a long period of time by significantly reducing whitening phenomenon occurring on the surface of the formulation.

[0010] In addition, it can have a strength suitable for stick formulations, so it can have excellent usability and storage stability.

[0011] In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.

[0012] Figure 1 shows a photograph of the formulation of Example 1 and Comparative Example 1 of Experimental Example 1 taken one week after storage.

[0013] Figure 2 shows photographs of the formulations of Examples 5 to 6 of Experimental Example 2 and Comparative Example 8 taken one week after storage.

[0014] According to an embodiment of the present invention, a stick-type cosmetic composition is provided in the form of an emulsified formulation with reduced whitening, which comprises a wax, wherein the wax comprises a synthetic wax.

[0015] In addition, the stick-type cosmetic composition may further include at least one of microcrystalline wax and ozokerite.

[0016] Additionally, the stick-type cosmetic composition may contain water in an amount of 5 to 50 wt% or less based on the total weight of the stick-type cosmetic composition.

[0017] According to another embodiment of the present invention, a stick-type cosmetic composition in the form of an emulsified formulation with reduced whitening phenomenon is provided, which comprises a polyol and is characterized by being an oil-in-polyol (O / P) type or an oil-in-polyol (P / O) type.

[0018] Additionally, the stick-type cosmetic composition may contain 5 to 50 wt% of the polyol.

[0019] Additionally, the polyol may include at least one of glycerin, butylene glycol, dipropylene glycol, and 1,2-hexanediol.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. In general, the nomenclature used herein is well known and commonly used in the art. In addition, when describing embodiments of the present invention, if a detailed description of a related known structure or function is judged to hinder the understanding of the embodiments of the present invention, a detailed description thereof will be omitted. In addition, although embodiments of the present invention will be described below, the technical idea of ​​the present invention is not limited or restricted thereto, and can be modified and implemented in various ways by those skilled in the art.

[0021] When a part in this specification is said to include a certain component, this does not exclude other components, unless otherwise specifically stated, but rather means that other components may be included. In this specification, the term "and / or" includes a combination of multiple related items or any one of multiple related items.

[0022]

[0023] A stick-type cosmetic composition in an emulsified form according to an embodiment of the present invention can maintain a smooth and clean appearance for a long period of time by significantly reducing the whitening phenomenon occurring on the surface of the stick-type cosmetic composition, and can have a strength suitable for a stick-type formulation, thereby providing excellent usability and storage stability.

[0024] In this specification, “white trace” is a term referring to a change in shape (discoloration, etc.) that may occur on the surface of a stick-type cosmetic composition, and means, for example, a phenomenon in which a white-colored band or stain is observed on the surface of a stick-type cosmetic. Specifically, the white trace occurs in a stick-type cosmetic composition containing water, and is a concept distinct from sweating, which occurs when oil separates onto the wax surface in a general stick-type cosmetic composition, or blooming, which occurs when wax seeps out of the formulation and covers the surface.

[0025] The inventors of the present invention, after repeated research to improve the whitening phenomenon, have confirmed that a stick-type cosmetic composition in an emulsified formulation with significantly reduced whitening phenomenon can be prepared by combining a specific wax. According to an embodiment of the present invention, the stick-type cosmetic composition in an emulsified formulation comprises a wax, and the wax may comprise a synthetic wax.

[0026] In one embodiment, the synthetic wax may be included in an amount of 6.2 to 8.3 wt% based on the total weight of the stick-type cosmetic composition. When included in the above amount, the most excellent whitening reduction effect may be achieved.

[0027] In one embodiment, the stick-type cosmetic composition may further comprise at least one of microcrystallune wax and ozokerite.

[0028] In one embodiment, at least one of microcrystalline wax and ozokerite may be included in an amount of 2.5 to 8 wt%, and specifically 4 to 6 wt%, based on the total weight of the stick-type cosmetic composition. When included in the above amount, the most excellent whitening reduction effect may be exhibited.

[0029] In one embodiment, the wax of the stick-type cosmetic composition of the present invention may include only synthetic wax, or only synthetic wax and at least one of microcrystalline wax and ozokerite. If a wax other than the wax component is included, the whitening phenomenon may not be improved.

[0030]

[0031] In one embodiment, the stick-type cosmetic composition comprises water as a water-in-oil or oil-in-water emulsified formulation, and the water may be contained in an amount of 5 to 50 wt% or less, specifically 10 to 40 wt% or less, and more specifically 15 to 30 wt% or less, based on the total weight of the stick-type cosmetic composition. If water is contained in an amount exceeding 50 wt%, the amount of moisture evaporated from the surface of the stick-type cosmetic composition may be high, and thus the whitening phenomenon may not be improved.

[0032] The inventors of the present invention have conducted repeated studies to improve the whitening phenomenon and have confirmed that a stick-type cosmetic composition in an emulsified formulation with significantly reduced whitening phenomenon can be produced when an emulsified formulation is formed using polyol.

[0033] In this specification, “polyol” refers to a general term for a component containing two or more hydroxyl groups (-OH) in the molecule, and refers to components such as dialcohol and trialcohol.

[0034]

[0035] According to another embodiment of the present invention, a stick-type cosmetic composition is provided in an emulsified formulation comprising a polyol and being a polyol-in-oil (P / O) or polyol-in-oil (O / P) formulation. When a polyol is used instead of water in the emulsified formulation, whitening can be significantly reduced.

[0036] In one embodiment, the stick-type cosmetic composition may further comprise a polyol. Examples of the polyol include, but are not limited to, propanediol, propylene glycol, glycerin, butylene glycol, pentylene glycol, 1,2-hexanediol, and dipropylene glycol.

[0037] In one embodiment, the polyol may be included in an amount of 5 to 50 wt%, and specifically, in an amount of 10 to 40 wt%. For example, 3.5 wt% glycerin, 8.5 wt% butylene glycol, 1 wt% dipropylene glycol, and 1 wt% 1,2-hexanediol may be included. When the polyol is included in the above wt%, a composition having reduced whitening and suitable for application in a stick formulation can be prepared.

[0038]

[0039] In one embodiment, the stick-type cosmetic composition may further include a thickener, an emollient, an oil, a skin conditioning agent, an emulsifier, a preservative, and the like.

[0040] Examples of thickening agents may include caprylic / capric triglyceride*stearalkonium hectorite*propylene carbonate; examples of emollients may include dicaprylyl carbonate, isodecyl neopentanoate, squalane, and dimethicone; examples of skin conditioning agents may include ceramide NP, alpha-tocopherol, glyceryl caprylate, and sorbitan sesquioleate; examples of emulsifiers may include lauryl PEG-8 dimethicone and dimethicone*dimethicone / PEG-10 / 15 crosspolymer; and examples of preservatives may include 1,2-hexanediol. However, the examples above are not limited thereto.

[0041] In one embodiment, the stick-type oil-dispersed cosmetic composition of the present invention may additionally include a functional ingredient.

[0042] The above functional ingredients may be added by mixing various ingredients depending on the purpose of the cosmetic composition, and include, for example, wrinkle improvement agents, whitening functional ingredients, pigmentation functional ingredients, skin soothing functional ingredients, and sebum or pore management functional ingredients.

[0043] In addition, the stick-type cosmetic composition of the present invention may additionally include ingredients included in general cosmetic compositions, and may include, for example, an emulsifying stabilizer, an ion sequestering agent, a sterilizing agent, a pH regulator, an antioxidant, alcohol, a plant extract, a fragrance, a feeling-regulating agent, etc.

[0044] The mixing amount of the above-described components is not particularly limited, and can be easily selected by a person skilled in the art within a range that does not impair the purpose and effect of the present invention.

[0045]

[0046] In one embodiment, the stick-type cosmetic composition may be a night formulation, a semi-solid formulation, or a solid formulation. Without limitation, any formulation that can be manufactured into a stick-type cosmetic composition may be applied without limitation.

[0047] The stick-type cosmetic composition according to an embodiment of the present invention may be provided as a lipstick, lip gloss, lip balm, foundation, BB cream, CC cream, concealer, makeup primer, cream makeup, eye shadow, mascara, eyeliner, eyebrow pencil, lip contour pencil, nail varnish, sunscreen, makeup base, etc., but is not limited thereto.

[0048]

[0049] Hereinafter, examples and experimental examples are presented to explain the present invention more specifically, but the present invention is not limited thereto.

[0050]

[0051] Experimental Example 1. Comparative Experiment on Combination and Content of Wax

[0052] (1) Manufacturing of examples and comparative examples

[0053] In order to confirm the combination and optimal content of specific waxes for reducing whitening phenomenon, examples of water-in-oil type were prepared using the components and contents listed in Table 1 below (unit: weight%).

[0054]

[0055]

[0056] The specific manufacturing method is as follows.

[0057] The oily components were placed in the oily beaker, heated to 85°C, stirred, and mixed homogeneously. The aqueous components were placed in the water beaker, heated to 80°C, stirred, and mixed homogeneously. The mixed aqueous components were then slowly added to the oily beaker, emulsifying them. After completing the defoaming and filtration flotation processes, they were filled into stick-shaped containers and cooled to complete the examples and comparative examples.

[0058]

[0059] In addition, Comparative Examples 1 to 7 were manufactured by changing only the combination and content of the wax component and the remaining components and contents to be the same as in Table 1. The specific components and contents are as shown in Tables 2 and 3 below (unit: weight %).

[0060]

[0061]

[0062]

[0063] (2) Evaluation of whether whitening occurs

[0064] The occurrence of whitening phenomenon in the examples and comparative examples was evaluated. The specific experimental method is as follows.

[0065] The stoppers of the examples and comparative examples were removed and stored for 30 days. For comparison, those without the stoppers were stored for 30 days and used as a control group.

[0066] The evaluation was conducted using the above method, and if the whitening phenomenon did not occur or was faint, it was given an O, if the whitening phenomenon occurred but was not severe, it was given an △, and if the whitening phenomenon occurred severely, it was given an X.

[0067] The occurrence of whitening was evaluated in the same manner as above, and the results are shown in Tables 4 and 5 below. In addition, photographs of Example 1 and Comparative Example 1 stored for one week were taken and shown in Figure 1.

[0068]

[0069]

[0070]

[0071] According to Tables 4 and 5 above, in Examples 1 to 4, which contained an appropriate amount of synthetic wax alone or together with microcrystalline wax or ozokerite, almost no whitening phenomenon was observed even though 15 wt% of purified water was included, whereas in Comparative Examples 1 to 2, which contained a small amount of synthetic wax or microcrystalline wax, it was confirmed that the whitening phenomenon occurred very severely. In addition, in Comparative Example 3, which used another wax (ceresin) instead of microcrystalline wax, a whitening phenomenon occurred, and in Comparative Examples 4 to 7, which contained one more type of another wax in addition to the synthetic wax and microcrystalline wax, it was confirmed that Comparative Example 4 occurred very severely and Comparative Examples 5 to 7 occurred whitening.

[0072]

[0073] Therefore, it was confirmed that including synthetic wax and microcrystalline wax or ozokerite in an appropriate amount as wax is an essential component in reducing whitening.

[0074]

[0075] Experimental Example 2. Comparative experiment on water content and formation of polyol-in-oil type

[0076] (1) Manufacturing of examples and comparative examples

[0077] In order to confirm the optimal water content in the composition to reduce the whitening phenomenon and to confirm that the whitening phenomenon is reduced when an emulsifier is formed using polyol, examples and comparative examples were prepared in the same manner as in Experimental Example 1 using the components and contents listed in Table 6 below (unit: weight%).

[0078] Specifically, Example 5 did not add the C phase component, Example 6 did not add water to the C phase, and Comparative Example 8 used only water as the C phase component and added an excessive amount of water.

[0079]

[0080]

[0081] (2) Evaluation of whether whitening occurs

[0082] The occurrence of whitening was evaluated in the same manner as in Experimental Example 1, and the results are shown in Table 7 below. In addition, photographs of Examples 5 to 7 and Comparative Example 8 stored for one week were taken and shown in Figure 1.

[0083]

[0084]

[0085] According to Table 7 above, Example 5, in which no C phase was added, Example 6, in which an oil-in-polyol formulation was formed by excluding water from the C phase, and Example 7, in which an appropriate amount of water was added, were all confirmed to exhibit almost no whitening phenomenon. On the other hand, Comparative Example 8, in which an excessive amount of water was added, was confirmed to exhibit very severe whitening.

[0086]

[0087] Therefore, it was confirmed that forming an emulsifier through polyol or including an appropriate amount of water is an important component in reducing whitening of a stick-type cosmetic composition.

[0088]

[0089] While specific aspects of the present invention have been described in detail above, it will be apparent to those skilled in the art that these specific descriptions merely represent preferred embodiments and are not intended to limit the scope of the present invention. Therefore, the substantial scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. In a stick-type cosmetic composition of an emulsified formulation with reduced whitening phenomenon, Contains wax, The above wax is a stick-type cosmetic composition in an emulsified formulation containing synthetic wax.

2. In paragraph 1, A stick-type cosmetic composition in an emulsified formulation, wherein the synthetic wax is contained in an amount of 6.2 to 8.3 wt% based on the total weight of the stick-type cosmetic composition.

3. In paragraph 1, The above stick-type cosmetic composition is an emulsified stick-type cosmetic composition further comprising at least one of microcrystalline wax and ozokerite.

4. In paragraph 3, A stick-type cosmetic composition in an emulsified formulation, wherein at least one of the above microcrystalline wax and ozokerite is contained in an amount of 4 to 6 wt% based on the total weight of the stick-type cosmetic composition.

5. In paragraph 1, The above stick-type cosmetic composition is an emulsified stick-type cosmetic composition containing water in an amount of 5 to 50 wt% based on the total weight of the stick-type cosmetic composition.

6. In a stick-type cosmetic composition of an emulsified formulation with reduced whitening phenomenon, Contains polyols, A stick-type cosmetic composition in an emulsified formulation, characterized in that the above emulsified formulation is a polyol-in-oil (P / O) or polyol-in-oil (O / P) type.

7. In paragraph 6, The above stick-type cosmetic composition is an emulsified stick-type cosmetic composition containing 5 to 50 wt% of the polyol based on the total weight of the stick-type cosmetic composition.

8. In paragraph 6, A stick-type cosmetic composition in an emulsifying formulation, wherein the polyol comprises at least one of glycerin, butylene glycol, dipropylene glycol, and 1,2-hexanediol.

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