Cosmetic composition of polyol-in-oil dosage form

Abstract

The present disclosure discloses a cosmetic composition of a polyol-in-oil dosage form. The composition includes a wax, an oil, a polyol, a porous powder, and an inorganic thickener. The composition uses minimal amounts of emulsifier to stabilize high levels of polyol components into an anhydrous polyol-in-oil dosage form. The composition provides an effect of greatly improving a sweating phenomenon in a dosage form using a natural wax, and improving a dispersion problem in which a pigment layer is separated at a high temperature.

Description

Technical Field

[0001] The present disclosure discloses a cosmetic composition in the form of a polyol-in-oil dosage form. Background Art

[0002] Lipsticks are primarily composed of oil-dispersed formulations containing lipophilic or hydrophobic substances such as waxes, oils, and powders. While these help prevent moisture evaporation from the lips, the use of excessive amounts of moisture-occlusive agents can create a thick, sticky feel. Furthermore, their long-lasting moisturizing properties can lead to a drying sensation over extended use, necessitating frequent reapplying.

[0003] Glycerin and butylene glycol, representative polyols, are widely used humectants for skin moisturization. Glycerin, with its three hydroxyl groups (-OH) in its molecular structure, has a strong ability to attract moisture. Furthermore, its non-volatility provides excellent moisturizing properties and a cooling sensation compared to oils.

[0004] However, the use of large amounts of hydrophilic polyols in oil-dispersed formulations can lead to physical stability issues such as separation and severe surface sweating due to differences in compatibility, resulting in reduced marketability and difficulties in commercialization. Sweating in stick products is not only visually unsightly but also causes slippery, difficult application during use due to the accumulation of sweat on the surface, thus requiring improvement.

[0005] To stabilize polyols within sticks, research has been conducted on mixing waxes, oils, polyols, and emulsifiers to create oil-in-polyol formulations. However, stabilizing high levels of polyols requires the use of high levels of emulsifiers, which can be irritating to the skin. Furthermore, it remains difficult to improve the severe sweating at both room and high temperatures. In particular, when sticks are manufactured with a low hardness to achieve a soft, melting feel, sweating is further exacerbated, further limiting the ability to achieve a superior feel.

[0006] Furthermore, lipsticks require a large amount of colorant to impart color to the lips. Oil-in-polyol formulations have low viscosity at high temperatures, leading to separation of the pigment layer when stored in a high-temperature autoclave at around 90°C for extended periods of time. Furthermore, the inclusion of colorants affects the wax crystal structure, leading to more severe sweating compared to colorless formulations.

[0007] With growing consumer concerns about the safety of petroleum-based synthetic ingredients used in cosmetics and increased environmental awareness, stick-type cosmetics are being developed that utilize plant-derived waxes as a replacement for the petroleum-based synthetic waxes primarily used in lipstick production. However, the use of plant-derived waxes in place of synthetic waxes has the disadvantage of exacerbating sweating due to differences in crystal structure formation caused by the properties of the raw materials.

[0008] Therefore, it is necessary to improve the existing stick-type polyol-in-oil cosmetic compositions, which have the disadvantages of sweating, reduced feel during use, and reduced pigment dispersibility, which have made them difficult to commercialize. Summary of the Invention

[0009] Technical problems to be solved

[0010] In one aspect, the present disclosure provides a cosmetic composition in the form of a polyol-in-oil formulation.

[0011] Solution to the problem

[0012] In one aspect, the present disclosure provides a cosmetic composition in the form of a polyol-in-oil formulation, comprising wax, oil, polyol, porous powder, and an inorganic thickener.

[0013] In an exemplary implementation, the wax may include sunflower seed wax.

[0014] In an exemplary implementation, the polyol may include glycerol.

[0015] In an exemplary implementation, the polyol may further include one or more selected from the group consisting of butanediol, diglycerin, and propylene glycol.

[0016] In an exemplary implementation, the porous powder may include silicon dioxide, silica silylate, silica dimethyl silylate, silicon dioxide / polydimethylsiloxane, silicon dioxide / polymethylsiloxane, methyl methacrylate cross-polymer, or a mixture thereof.

[0017] In an exemplary implementation, the inorganic thickener may include at least one selected from hectorite and bentonite.

[0018] In an exemplary implementation, the composition may include 0.1 to 15 weight % of wax, 30 to 70 weight % of oil, 5 to 25 weight % of polyol, 0.5 to 6 weight % of porous powder and 0.1 to 3 weight % of inorganic thickener, based on the total weight of the composition.

[0019] In an exemplary implementation, the polyol and the porous powder may be mixed in a weight ratio of 4 to 20:1.

[0020] In an exemplary implementation, the composition may further include 0.1 to 10 wt % of a pigment based on the total weight of the composition.

[0021] In an exemplary implementation, the composition may further include 0.1 to 5 weight % of an emulsifier based on the total weight of the composition.

[0022] In an exemplary implementation, the composition may further include 5 to 25 wt % of a lubricant based on the total weight of the composition.

[0023] In an exemplary implementation, the mixed weight of the polyol and the lubricant may be 30 to 40 wt % based on the total weight of the composition.

[0024] In an exemplary implementation, the composition may be a lip makeup cosmetic composition.

[0025] In an exemplary implementation, the composition may be a cosmetic composition in a stick form.

[0026] In an exemplary implementation, the composition may be in an anhydrous dosage form.

[0027] Effects of the Invention

[0028] On the one hand, the technology disclosed in the present disclosure has the effect of providing a cosmetic composition in the form of a polyol-in-oil formulation.

[0029] In one exemplary embodiment, the composition uses a minimal amount of emulsifier to stabilize a high-content polyol component into an oil-in-polyol formulation. Therefore, the composition has the effect of greatly improving sweating and usage feel in formulations using natural wax, and improving the dispersibility problem of pigment layer separation at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Photos showing a sweating phenomenon visually confirmed after the stick dosage form according to one embodiment was stored at a high temperature of 45° C. (left side: dosage form 1-2, right side: dosage form 1-3);

[0031] Figure 2 A photograph showing a sweating phenomenon observed visually after the dosage form 2-1 prepared in one example was stored at a high temperature of 45°C is shown;

[0032] Figure 3 Shows the results of measuring skin moisture levels over time using a stick dosage form according to an experimental example;

[0033] Figure 4 The results of measuring the moisture increase and decrease rate of a stick dosage form over time according to one experimental example are shown. DETAILED DESCRIPTION

[0034] Hereinafter, the present disclosure will be described in detail.

[0035] In one aspect, the present disclosure provides a cosmetic composition in the form of a polyol-in-oil formulation, comprising wax, oil, polyol, porous powder, and an inorganic thickener.

[0036] Polyols have excellent moisturizing properties and offer a refreshing feel compared to oils. However, when large amounts of polyols are used in oil-dispersed formulations, the formulations can separate or experience severe surface sweating, hindering commercialization. The present disclosure provides a cosmetic composition for a polyol-in-oil formulation that significantly improves the sweating that is common in existing oil-in-polyol cosmetics, resolving the dispersibility issue of pigment layer separation at high temperatures, resulting in excellent formulation stability and enhanced moisturizing properties and feel. Furthermore, the present disclosure provides a cosmetic composition for a polyol-in-oil formulation that stabilizes a high polyol content, such as 5% by weight or more, 10% by weight or more, 15% by weight or more, or 20% by weight or more, in a formulation using natural wax.

[0037] In one exemplary embodiment, the wax may include sunflower seed wax. In the polyol-in-oil cosmetic composition of the present disclosure, sunflower seed wax has excellent compatibility with various oils and easily forms a hard coating, providing an excellent effect of being soft and easily spreadable.

[0038] In an exemplary implementation, the wax may further include one or more waxes selected from the group consisting of rice bran wax, candelilla wax, and carnauba wax.

[0039] In one exemplary embodiment, the wax content may be 0.1 to 15% by weight, preferably 0.1 to 10% by weight, based on the total weight of the composition. In another exemplary embodiment, the wax content may be 0.1% by weight or more, 0.5% by weight or more, 1% by weight or more, 2% by weight or more, 3% by weight or more, 4% by weight or more, 5% by weight or more, 6% by weight or more, 7% by weight or more, 8% by weight or more, 9% by weight or more, or 10% by weight or more, and 15% by weight or less, 14% by weight or less, 13% by weight or less, 12% by weight or less, 11% by weight or less, or 10% by weight or less, based on the total weight of the composition.

[0040] In an exemplary embodiment, the oil may include: an ester oil selected from the group consisting of hexyl laurate, dicaprylyl carbonate, diisostearyl malate, butylene glycol dicaprylate / dicaprate, cetyl ethylhexanoate, triethylhexanoin, dicetearyl dimer dilinoleate, caprylic / capric triglyceride, and pentaerythrityl tetraisostearate; an ester oil selected from the group consisting of polybutene, hydrogenated polyisobutene, At least one of a hydrocarbon oil selected from the group consisting of polyisobutene and phytosqualane; and a silicone oil selected from the group consisting of phenyl trimethicone and dimethicone.

[0041] In one exemplary embodiment, the content of the oil may be 30 to 70% by weight, based on the total weight of the composition. In another exemplary embodiment, the content of the oil may be greater than 30%, greater than 35%, greater than 40%, greater than 45%, or greater than 50% by weight, and less than 70%, less than 65%, less than 60%, less than 55%, less than 50%, less than 45%, or less than 40% by weight, based on the total weight of the composition.

[0042] In one exemplary embodiment, the polyol may include glycerin. Conventional stick-type water-in-oil lip makeup compositions that include water to provide a hydrating feel often experience rapid evaporation at room temperature, causing the stick to shrink and deform over time. This necessitates the use of a special sealed container, and after application to the lips, the evaporation of the water can lead to a dry feeling. The present disclosure provides a cosmetic composition in an anhydrous polyol-in-oil formulation that uses glycerin as a polyol, thereby alleviating this disadvantage.

[0043] In an exemplary implementation, the polyol may further include one or more selected from the group consisting of butanediol, diglycerin, and propylene glycol.

[0044] In an exemplary implementation, the content of the polyol can be 5 weight % or more, 10 weight % or more, 15 weight % or more, or 20 weight % or more, based on the total weight of the composition.

[0045] In another exemplary embodiment, the content of the polyol can be 5 to 25 wt % based on the total weight of the composition, or preferably 10 to 25 wt % or 10 to 20 wt % to improve the formulation stability and feel of the polyol-in-oil formulation comprising natural wax. In another exemplary embodiment, the content of the polyol can be 5 wt % or more, 7 wt % or more, 10 wt % or more, 12 wt % or more, 15 wt % or more, 17 wt % or more, or 20 wt % or less, and 25 wt % or less, 22 wt % or less, 20 wt % or less, 17 wt % or less, or 15 wt % or less, based on the total weight of the composition.

[0046] In an exemplary embodiment, the porous powder may include silicon dioxide (AEROSIL ® 200, Evonik), silica silylate (AEROSIL ® R 812S, AEROSIL ® R 202, Evonik), silica dimethyl silylate (HDK ® H15, HDK ® H18, WACKER), silica / polydimethylsiloxane (silica surface-treated with polydimethylsiloxane), silica / polymethylsiloxane (silica surface-treated with polymethylsiloxane), methyl methacrylate crosspolymer, or mixtures thereof. Preferably, when the porous powder is silica dimethyl silylate, it exhibits excellent sweat suppression effects.

[0047] In one exemplary embodiment, the content of the porous powder may be 0.5 to 6 weight % based on the total weight of the composition, and may preferably be 1 to 5 weight % or 1 to 2 weight % in terms of suppressing sweating and improving the feel of use. In another exemplary embodiment, the content of the porous powder may be 0.5 weight % or more, 1 weight % or more, 1.5 weight % or more, 2 weight % or more, 2.5 weight % or more, 3 weight % or more, 3.5 weight % or more, 4 weight % or more, 4.5 weight % or more, or 5 weight % or more, and 6 weight % or less, 5.5 weight % or less, 5 weight % or less, 4.5 weight % or less, 4 weight % or less, 3.5 weight % or less, 3 weight % or less, 2.5 weight % or less, or 2 weight % or less, based on the total weight of the composition.

[0048] In an exemplary implementation, in order to improve the dosage form stability and usage feel of the oil-in-polyol dosage form including natural wax, the polyol and porous powder can be mixed in a weight ratio of 4 to 20:1, a weight ratio of 4 to 15:1, or a weight ratio of 4 to 10:1.

[0049] In an exemplary implementation, in order to improve the dosage form stability and usage feel of the oil-in-polyol dosage form including natural wax, it is preferred to mix the wax and the porous powder in a weight ratio of 1:0.1 to 0.5, a weight ratio of 1:0.2 to 0.5, or a weight ratio of 1:0.3 to 0.4.

[0050] In one exemplary embodiment, the inorganic thickener may include one or more selected from hectorite and bentonite. When added in small amounts, these inorganic thickeners increase viscosity at high temperatures, thereby facilitating pigment dispersion in oil-in-polyol formulations. They also prevent separation of the contents after prolonged exposure to high temperatures, facilitating rod forming. Without these inorganic thickeners, the pigment is less likely to disperse, resulting in a separate pigment layer.

[0051] In one exemplary embodiment, the content of the inorganic thickener may be 0.1 to 3 weight % based on the total weight of the composition. In another exemplary embodiment, the content of the inorganic thickener may be 0.1 weight % or more, 0.5 weight % or more, 1 weight % or more, 1.5 weight % or more, or 2 weight % or more, and 3 weight % or less, 2.5 weight % or less, 2 weight % or less, 1.5 weight % or less, or 1 weight % or less, based on the total weight of the composition.

[0052] In an exemplary implementation, the composition may further include a pigment.

[0053] In one exemplary embodiment, the composition may further include 0.1 to 10% by weight of a pigment, based on the total weight of the composition. In another exemplary embodiment, the composition may further include 0.1% by weight or more, 0.5% by weight or more, 1% by weight or more, 1.5% by weight or more, 2% by weight or more, 2.5% by weight or more, or 3% by weight or more, and 10% by weight or less, 9.5% by weight or less, 9% by weight or less, 8.5% by weight or less, 8% by weight or less, 7.5% by weight or less, 7% by weight or less, 6.5% by weight or less, 6% by weight or less, 5.5% by weight or less, 5% by weight or less, 4.5% by weight or less, 4% by weight or less, 3.5% by weight or less, or 3% by weight or less of a pigment, based on the total weight of the composition.

[0054] The pigment refers to a substance that is insoluble in solvents such as water or oil and is dispersed. The pigment may refer to a powdered colorant that is insoluble in a solvent and remains in powder form, thereby adhering to the surface of fibers or other substances. In an exemplary embodiment, the pigment can be roughly divided into organic pigments and inorganic pigments. The organic pigment, as a pigment with an organic compound as the main pigment, refers to a pigment including a lake pigment, and the inorganic pigment refers to a chemically inorganic pigment. In an exemplary embodiment, the inorganic pigment may be one or more selected from the group consisting of white pigments, coloring pigments, extender pigments and pearlescent pigments.

[0055] In an exemplary implementation, the white pigment may be one or more selected from the group consisting of titanium dioxide, zinc oxide, zinc sulfide, and barium sulfate.

[0056] In an exemplary implementation, the extender pigment may be one or more selected from the group consisting of talc, mica, sericite, kaolin, boron nitride, silica, alumina, barium silicate, zeolite, barium sulfate, clay, kaolin, bentonite, calcium carbonate, and magnesium carbonate.

[0057] In an exemplary implementation example, the pigments include pigments commonly used in cosmetics, such as inorganic powders of muscovite, synthetic mica, sericite, kaolin, titanium dioxide, titanium oxide-coated mica, aluminum powder, iron oxide yellow, iron oxide black, carbon black, barium sulfate, silica, zeolite, etc.; and organic powders of nylon, PMMA, polystyrene powder, polyethylene powder, cellulose powder, etc.

[0058] In an exemplary implementation example, the pigments include organic pigments of barium or aluminum lakes, such as Yellow No. 203, Yellow No. 4, Yellow No. 5, Yellow No. 201, Yellow No. 204, Red No. 103, Red No. 201, Red No. 202, Red No. 218, Red No. 220, Red No. 223, Red No. 226, Red No. 227, Blue No. 1, and Blue No. 2, and pearl pigments.

[0059] In an exemplary implementation, the composition may further include an emulsifier.

[0060] In an exemplary embodiment, the composition may further include an emulsifier in an amount of 5% by weight or less, 4.5% by weight or less, 4% by weight or less, 3.5% by weight or less, 3% by weight or less, 2.5% by weight or less, 2% by weight or less, 1.5% by weight or less, 1% by weight or less, 0.5% by weight or less, 0.1% by weight or less, 0.05% by weight or less, or 0.001% by weight or less, based on the total weight of the composition. The present disclosure utilizes a minimal amount of emulsifier, thereby providing the effect of stabilizing a high content of polyol component into a polyol-in-oil formulation.

[0061] In another exemplary embodiment, the composition may further include 0.1 to 5 weight % or 1 to 5 weight % of an emulsifier, based on the total weight of the composition. In another exemplary embodiment, the composition may further include 0.1 weight % or more, 0.5 weight % or more, 1 weight % or more, 1.5 weight % or more, 2 weight % or more, 2.5 weight % or more, or 3 weight % or more, but less than 5 weight %, less than 4.5 weight %, less than 4 weight %, less than 3.5 weight % or less of an emulsifier, based on the total weight of the composition.

[0062] In one exemplary embodiment, the emulsifier may be a nonionic emulsifier having an HLB (Hydrophilic-lipophilic balance) value of 3 to 6. Preferably, a cetyl PEG / PPG-10 / 1 dimethicone (ABIL EM 90, EVONIK) component, which has high emulsifying ability and broad oil compatibility, may be used at a content of approximately 3% by weight.

[0063] In one exemplary implementation, the composition may further include a lubricant.

[0064] In one exemplary embodiment, the composition may further include 5 to 25% by weight of a lubricant, based on the total weight of the composition. In another exemplary embodiment, the composition may further include 5% by weight or more, 10% by weight or more, 15% by weight or more, or 20% by weight or more, and 25% by weight or less, 20% by weight or less, 15% by weight or less, or 10% by weight or less of a lubricant, based on the total weight of the composition.

[0065] In an exemplary implementation, the lubricant may have a viscosity of 300 cP or more, 300 to 1300 cP, or 300 to 1000 cP at 25°C.

[0066] In an exemplary implementation, the lubricant may include polyglyceryl-2 triisostearate.

[0067] In an exemplary implementation, the combined weight of the polyol and the lubricant is 30 to 40 wt % based on the total weight of the composition.

[0068] In an exemplary implementation, the composition may be a lip makeup cosmetic composition.

[0069] In an exemplary implementation, the composition may be a stick-type cosmetic composition.

[0070] In an exemplary implementation, the composition can be in an anhydrous dosage form.

[0071] In an exemplary implementation, in addition to the above ingredients, the composition can be appropriately formulated using ingredients used in common cosmetics within the scope that does not destroy the effects of this specification, such as emulsions, powders, polymer compounds, moisturizers, fragrances, antioxidants, preservatives, functional ingredients, etc. other than the above.

[0072] In one aspect, the present disclosure includes at least the following implementation examples.

[0073] Implementation Example 1: A cosmetic composition in the form of a polyol-in-oil formulation, comprising wax, oil, polyol, porous powder and an inorganic thickener.

[0074] Implementation Example 2: A cosmetic composition in the form of a polyol-in-oil formulation. According to Implementation Example 1, the wax includes sunflower seed wax.

[0075] Implementation Example 3: A cosmetic composition in the form of an oil-in-polyol dosage form, according to Implementation Example 1 or Implementation Example 2, wherein the polyol includes glycerol.

[0076] Implementation Example 4: A cosmetic composition in the form of a polyol-in-oil formulation, according to Implementation Example 3, wherein the polyol further comprises at least one selected from the group consisting of butylene glycol, diglycerin, and propylene glycol.

[0077] Implementation Example 5: A cosmetic composition in the form of an oil-in-polyol dosage form, according to any one of Implementation Examples 1 to 4, wherein the porous powder comprises silicon dioxide, silica silylate, silica dimethyl silylate, silicon dioxide / polydimethylsiloxane, silicon dioxide / polymethylsiloxane, methyl methacrylate cross-linked polymer or a mixture thereof.

[0078] Implementation Example 6: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 5, wherein the inorganic thickener comprises at least one selected from hectorite and bentonite.

[0079] Implementation Example 7: A cosmetic composition in the form of an oil-in-polyol formulation, according to any one of Implementation Examples 1 to 6, comprising, based on the total weight of the composition, 0.1 to 15 weight% of wax, 30 to 70 weight% of oil, 5 to 25 weight% of polyol, 0.5 to 6 weight% of porous powder and 0.1 to 3 weight% of an inorganic thickener.

[0080] Implementation Example 8: A cosmetic composition in the form of a polyol-in-oil formulation, comprising: mixing the polyol and the porous powder according to any one of Implementation Examples 1 to 7 at a weight ratio of 4 to 20:1.

[0081] Implementation Example 9: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 8, further comprising 0.1 to 10 wt % of a pigment based on the total weight of the composition.

[0082] Implementation Example 10: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 9, further comprising 0.1 to 5 wt % of an emulsifier based on the total weight of the composition.

[0083] Implementation Example 11: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 10, further comprising 5 to 25 wt % of a lubricant based on the total weight of the composition.

[0084] Implementation Example 12: A cosmetic composition in the form of a polyol-in-oil formulation, according to Implementation Example 11, wherein the mixed weight of the polyol and the lubricant is 30 to 40 wt % based on the total weight of the composition.

[0085] Implementation Example 13: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 12, wherein the composition is a lip makeup cosmetic composition.

[0086] Implementation Example 14: A cosmetic composition in the form of a polyol-in-oil dosage form, according to any one of Implementation Examples 1 to 13, wherein the composition is a cosmetic composition in the form of a stick dosage form.

[0087] Implementation Example 15: A cosmetic composition in the form of a polyol-in-oil formulation, according to any one of Implementation Examples 1 to 14, wherein the composition is in the form of an anhydrous formulation.

[0088] The present disclosure is further described in detail below by way of examples. These examples are merely for illustrating the present disclosure, and the scope of the present disclosure is not limited by these examples, which is obvious to a person having ordinary knowledge in the technical field.

[0089] Example 1

[0090] According to the formulation shown in Table 1 below, all ingredients except the polyol were placed in a container, heated to 90°C for thorough dissolution, and then dispersed using a high-speed stirrer at 2000 rpm for 20 minutes. The polyol was then added for further emulsification, and the degassed 90°C contents were poured into a backfill container and cooled to form a stick dosage form.

[0091] As the synthetic wax, a solid wax raw material having a melting point of about 80° C. is used.

[0092] Polyglyceryl-2 triisostearate is a high-viscosity oil-like lubricant suitable for wetting pigments and improving their dispersibility. Polyglyceryl-2 triisostearate has a viscosity (400 cP at 25°C) similar to that of glycerin (954 cP at 25°C), so its content can be adjusted according to the polyol content.

[0093] Hydrogenated rosin methyl ester is a high-viscosity rosin component derived from rosin and is added to impart gloss and adhesiveness.

[0094] Hydrogenated poly(C6-14 olefin) is a low-viscosity oil that provides a light feel and a silky application, while diisostearyl malate is a high-viscosity oil that provides excellent gloss and adds moisturizing properties to the lipstick.

[0095] The hardness, sweating phenomenon, and feeling during use of each of the manufactured dosage forms were evaluated.

[0096] The hardness was evaluated by measuring the cutting hardness at room temperature using a hardness meter (Rheometer, CR-500DX-L, Sun Scientific Co., Ltd., Japan).

[0097] Sweating was visually evaluated after the samples were stored in a sealed, thermostatic chamber at 45°C for 4 hours. A mark of "O" indicated a significant amount of sweating due to oil deposition over the entire surface of the stick. A mark of "△" indicated a very low level of sweating due to a minimal amount of oil deposition on only a portion of the stick surface, rather than over the entire surface. A mark of "X" indicated no sweating over the entire surface of the stick.

[0098] Five women in their 30s were asked to subjectively select a response and evaluate the feel of each stick formulation, focusing on the spreadability.

[0099] Table 1

[0100]

[0101] Formulation 1-1 does not use polyols, resulting in no sweating and an excellent feel during use. Formulations 1-2 and 1-3 contain synthetic wax and polyols. Formulation 1-3, which uses butylene glycol as the polyol, did not uniformly disperse the pigment and exhibited significant sweating not only at a high temperature of 45°C but also at room temperature. In contrast, formulation 1-2, which uses glycerin as the polyol, exhibited very low sweating (reference Figure 1This confirms that butylene glycol is less stable than glycerin in oil-in-polyol formulations. Regarding the feel, formulations 1-2 exhibit a light, smooth, and moist feel, while formulations 1-3 exhibit a very light, thin feel.

[0102] In formulations 1-4 to 1-7, when plant-derived waxes were used instead of synthetic waxes, even when glycerin was used as the polyol, severe sweating occurred, significantly reducing formulation stability compared to synthetic waxes. Regarding feel, formulations 1-4 exhibited gentle spreadability, formulations 1-5 presented a stiff and non-soft feel, and formulations 1-6 exhibited a low hardness and a very soft feel upon application. Furthermore, formulation 1-7 exhibited a lack of stick formation. This confirms that using sunflower seed wax from natural waxes in the manufacture of polyol-in-oil formulations achieves a hardness suitable for stick formulations and provides an excellent feel.

[0103] Example 2

[0104] According to the formulations shown in Table 2 below, stick dosage forms were prepared by the same method as in Example 1, and the sweating phenomenon and feeling during use of each dosage form were evaluated.

[0105] Table 2

[0106]

[0107] Regarding sweating, natural waxes, which are very fragile compared to synthetic waxes, exhibited significant sweating even without the presence of polyols (see Formulation 2-1). In contrast, when polyols were added to natural waxes along with porous silica dimethyl silylate powder, sweating was suppressed up to a polyol content of 25% by weight (see Formulations 2-2 to 2-5). Formulation 2-2 exhibited a relatively low polyol content, resulting in a lack of long-lasting moisturizing properties. Formulation 2-3 exhibited a refreshing feel and long-lasting moisturizing properties. Formulations 2-4 and 2-5 exhibited a luxurious feel and long-lasting moisturizing properties compared to Formulation 2-3. In formulation 2-7, butylene glycol was further added. When added together with glycerin, the heavy feel associated with increasing glycerin content was alleviated, resulting in a lighter and smoother spread than formulation 2-4, which contained only glycerin and had a polyol content of 20% by weight. In contrast, formulation 2-6, which contained a high polyol content of 30% by weight, exhibited sweating and a heavy feel.

[0108] Example 3

[0109] According to the formulations shown in Table 3 below, stick dosage forms were prepared by the same method as in Example 1, and the sweating phenomenon and feeling during use of each dosage form were evaluated.

[0110] Table 3

[0111]

[0112] When large amounts of pigment are added to oil-in-polyol formulations, poor compatibility between the pigment and the polyol leads to problems with uniform dispersion. Among oil-in-polyol formulations containing natural wax and polyols, formulation 3-1, which uses disteardimonium hectorite as an inorganic thickener, exhibits high pigment dispersibility and prevents separation of the contents even after production at high temperatures for extended periods, facilitating stick molding. In contrast, formulation 3-2, which uses kaolin as an inorganic thickener, exhibits no improvement in pigment dispersibility. Furthermore, when the prepared contents are stored at 90°C, the pigment separates within two hours, making it unsuitable for stick molding.

[0113] Comparing formulations 3-3 to 3-8, it was confirmed that even with the addition of powder, the addition of plate-like silica powder or non-porous silica powder did not improve the sweating phenomenon in the oil-in-polyol formulations. Furthermore, while the addition of porous powder improved the sweating phenomenon in the oil-in-polyol formulation containing natural wax, increasing the powder content resulted in less smooth application and a loss of glossiness after application, resulting in a dry feeling. Therefore, it was confirmed that the powder content is preferably 5% by weight or less to achieve excellent moisturizing properties and glossiness while suppressing sweating.

[0114] Experimental Example 1

[0115] For the formulations 1-1 to 1-3 and formulations 2-1 to 2-4 manufactured in Examples 1 and 2, the moisturizing properties were evaluated based on the type and content of the polyol. Figure 3 and 4 Shown in.

[0116] The moisturizing ability was evaluated by applying 0.2 g of each sample to the skin on the inside of the wrist and measuring the moisture content at various times using a moisture meter (measurement equipment: Scalar Moisture Checker MY-808S, Scalar Corporation, Japan).

[0117] The results showed that immediately after application, both formulations 1-2 and 1-3, which contain glycerin and butylene glycol, showed a significant increase in skin moisture at similar levels, and their skin moisture was higher than that of formulation 1-1, which does not contain a polyol. As time passed, the skin moisture of formulation 1-2 further increased, while the skin moisture of formulations 1-1 and 1-3 decreased dramatically. This confirms that glycerin has an excellent effect not only on initial moisture but also on the long-lasting moisturizing effect (reference Figure 3 ).

[0118] In addition, the results of confirming the rate of increase and decrease in moisture content according to the glycerol content showed that the initial moisture content increased in the order of 2-3 > 2-4 > 2-2 > 2-1. The skin moisture content of the formulation 2-1 quickly decreased to a level similar to that before application within 1 hour. The moisture content within 15 minutes was higher in the formulation 2-4, but there was no significant difference between the samples with a glycerol content of 15% by weight and 20% by weight for more than 30 minutes. The formulation 2-2 showed a tendency for the moisture content to decrease again after 1 hour, which confirmed that it is preferable to use 10% by weight or more of glycerol in the oil-in-polyol formulation to achieve long-term excellent moisturizing power that is different from existing products (reference Figure 4 ).

[0119] While specific portions of the present disclosure have been described in detail above, it should be apparent to those skilled in the art that these specific techniques are merely preferred embodiments and that the scope of the present disclosure is not limited thereby. Therefore, it should be understood that the substantial scope of the present disclosure is defined by the appended claims and their equivalents.

Claims

1. A cosmetic composition in the form of a polyol-in-oil formulation, comprising wax, oil, polyol, porous powder and an inorganic thickener.

2. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The wax includes sunflower seed wax.

3. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The polyol includes glycerol.

4. The cosmetic composition of the polyol-in-oil formulation according to claim 3, wherein: The polyol further includes one or more selected from the group consisting of butylene glycol, diglycerin, and propylene glycol.

5. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The porous powder includes silicon dioxide, silica silylate, silica dimethyl silylate, silicon dioxide / polydimethylsiloxane, silicon dioxide / polymethylsiloxane, methyl methacrylate cross-polymer or a mixture thereof.

6. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The inorganic thickener includes at least one selected from hectorite and bentonite.

7. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition comprises, based on the total weight of the composition, 0.1 to 15 weight % of wax, 30 to 70 weight % of oil, 5 to 25 weight % of polyol, 0.5 to 6 weight % of porous powder and 0.1 to 3 weight % of inorganic thickener.

8. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The polyol and the porous powder are mixed in a weight ratio of 4 to 20:

1.

9. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition further comprises 0.1 to 10 weight percent of a pigment based on the total weight of the composition.

10. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition further comprises 0.1 to 5 weight percent of an emulsifier based on the total weight of the composition.

11. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition further comprises 5 to 25 weight percent of a lubricant based on the total weight of the composition.

12. The cosmetic composition of the polyol-in-oil formulation according to claim 11, wherein: The mixed weight of the polyol and the lubricant is 30 to 40 wt % based on the total weight of the composition.

13. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition is a lip makeup cosmetic composition.

14. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition is a stick-type cosmetic composition.

15. The cosmetic composition of the polyol-in-oil formulation according to claim 1, wherein: The composition is an anhydrous dosage form.

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