High internal phase oil in water type cosmetic composition with high gloss

Abstract

The present invention relates to an oil-in-water type cosmetic composition. The cosmetic composition according to the present invention contains a high content of the internal oil phase while maintaining excellent formulation stability. Furthermore, the present invention provides an oil-in-water type cosmetic composition that has a high gloss that is expressed quickly and is maintained for a long time, a moist and comfortable feel, and excellent long-lasting moisturization.

Description

Technology Field

[0001] The present invention relates to an oil-in-water type cosmetic composition, and more specifically, to an oil-in-water type lip gloss cosmetic composition having a high content of internal phase and excellent gloss. Background Technology

[0002] High-gloss lip gloss is a consistently popular lip product. Conventional oil-in-water formulations, characterized by gloss, provide a moist and comfortable feel with a stable emulsification system, but they have limitations such as low gloss and slow filling.

[0003] In order to achieve a thick gloss that builds up quickly, increasing the oil phase content to over 50% in the existing emulsion framework can improve the gloss, but there is a problem in that the emulsion interface becomes unstable and the stability is very poor.

[0004] Therefore, there is a need to develop a high-gloss water-in-oil cosmetic composition that not only provides a moisturizing sensation but also rapidly builds up a thick gloss immediately after application and maintains it for a long time. Prior art literature

[0005] (Patent Document 0001) KR 10-2305893 B1 The problem to be solved

[0006] In order to solve the problems of the prior art described above, the present invention aims to provide an oil-in-water type cosmetic composition having a high internal phase content and excellent formulation stability.

[0007] In addition, the present invention aims to provide an oil-in-water type cosmetic composition that has high gloss, is expressed quickly, and is long-lasting. means of solving the problem

[0008] One aspect of the present invention provides a high-internal-phase oil-in-water type cosmetic composition comprising an oil phase and an aqueous phase, wherein the oil phase comprises an oil-in-water type surfactant and an oil-in-water type surfactant, and the oil phase is included in an amount of 50 to 80 weight% based on the total weight of the cosmetic composition.

[0009] The above-mentioned oil-in-water surfactant may be one or more selected from the group consisting of polysorbate 60, glyceryl stearate, ceteareth-20, and PEG-100 stearate. Additionally, the above-mentioned oil-in-water surfactant may be included in an amount of 2.5 to 3.5 weight% based on the total weight of the composition.

[0010] The above water-in-oil surfactant may be one or more selected from the group consisting of cetyl PEG / PPG-10 / 1 dimethicone, PEG-10 dimethicone, lauryl PEG-10 tris(trimethylsiloxy)silylethyl dimethicone, sorbitan isostearate, and sorbitan stearate. In addition, the above water-in-oil surfactant may be included in an amount of 5.5 to 6.5 weight% based on the total weight of the composition.

[0011] The weight ratio of the above water-in-oil type surfactant and the above water-in-oil type surfactant may be 1:1.6 to 2.4.

[0012] The above oil phase may include oil, and the oil may be included in an amount of 30 to 70 weight percent based on the total weight of the composition. Effects of the invention

[0013] According to one embodiment of the present invention, an oil-in-water type cosmetic composition with excellent formulation stability can be provided.

[0014] In addition, according to one embodiment of the present invention, an oil-in-water type cosmetic composition having high gloss, rapid expression, and long-lasting properties can be provided.

[0015] In addition, according to one embodiment of the present invention, an oil-in-water type cosmetic composition that provides a moist and comfortable feel and excellent moisturizing retention can be provided. Brief explanation of the drawing

[0016] Figure 1 is a photograph showing the results of a gloss test according to one embodiment of the present invention. Figure 2 is a photograph showing the results of a formulation stability test according to one embodiment of the present invention. Figure 3 is a graph showing the results of a moisturizing duration test according to one embodiment of the present invention. Specific details for implementing the invention

[0017] The present invention will be explained in more detail below with reference to examples. However, these examples are intended to illustrate the invention and should not be interpreted as limiting the scope of the invention.

[0018] According to one aspect of the present invention, the present invention provides an oil-in-water type cosmetic composition comprising an oil phase and an aqueous phase.

[0019] The above oil phase may include an oil-in-water type surfactant, an oil-in-water type surfactant, and oil.

[0020] The above aqueous phase may include purified water, a pigment, and a polyol.

[0021] In the present invention, the oil phase may be included in an amount of 50 to 80 weight% based on the total weight of the cosmetic composition. In the present invention, the oil phase may be 50 weight% or more, 52.5 weight% or more, 55 weight% or more, 57.5 weight% or more, or 60 weight% or more, and may be 80 weight% or less, 75 weight% or less, 70 weight% or less, or 65 weight% or less. In the present invention, if the oil phase content is less than the above amount, the gloss is low, and after application, the emulsion breaks down and it takes a long time for the gloss of the oil to burst out; if the content exceeds the above amount, the formulation stability is very low, so emulsification does not occur properly or separation occurs easily at room temperature.

[0022] In the present invention, the weight ratio of the water-in-oil type surfactant to the water-in-oil type surfactant may be 1:1.6 to 2.4. The weight ratio of the water-in-oil type surfactant to the water-in-oil type surfactant may be 1:1.6 or higher, 1:1.7 or higher, 1:8 or higher, 1:9 or higher, or 1:2 or higher, and may be 1:2.4 or lower, 1:2.3 or lower, 1:2.2 or lower, 1:2.1 or lower, or 1:2 or lower. In the present invention, if the weight ratio falls outside the above range, emulsion stability is poor, so emulsification does not occur, and even if emulsification occurs, separation occurs within a short period of time at room temperature.

[0023] A. Water-in-oil surfactants

[0024] The cosmetic composition of the present invention includes an oil-in-water type surfactant. In the present invention, the oil-in-water type surfactant may have an HLB (Hydrophile-Lipophile Balance) value of 10 or higher.

[0025] The above-mentioned aqueous surfactant may be one or more selected from the group consisting of polysorbate 60, glyceryl stearate, ceteareth-20, and PEG-100 stearate.

[0026] In the present invention, the oil-in-water type surfactant may be included in an amount of 2.5 to 3.5 weight% based on the total weight of the composition. In the present invention, the oil-in-water type surfactant may be 2.5 weight% or more, 2.6 weight% or more, 2.7 weight% or more, 2.8 weight% or more, or 2.9 weight% or more, and may be 3.5 weight% or less, 3.4 weight% or less, 3.3 weight% or less, 3.2 weight% or less, 3.1 weight% or less, or 3 weight% or less. In the present invention, if the oil-in-water type surfactant falls outside the above content range, emulsion stability is poor, so emulsification does not occur, and even if emulsification occurs, separation occurs within a short period of time at room temperature.

[0027] B. Water-in-oil surfactants

[0028] The cosmetic composition of the present invention includes a water-in-oil surfactant. In the present invention, the water-in-oil surfactant may have an HLB (Hydrophile-Lipophile Balance) value of 8 or less.

[0029] The above water-in-oil surfactant may be one or more selected from the group consisting of cetyl PEG / PPG-10 / 1 dimethicone, PEG-10 dimethicone, lauryl PEG-10 tris(trimethylsiloxy)silylethyl dimethicone, sorbitan isostearate, and sorbitan stearate.

[0030] In the present invention, the water-in-oil surfactant may be included in an amount of 5.5 to 6.5 weight% based on the total weight of the composition. In the present invention, the water-in-oil surfactant may be 5.5 weight% or more, 5.6 weight% or more, 5.7 weight% or more, 5.8 weight% or more, or 5.9 weight% or more, and may be 6.5 weight% or less, 6.4 weight% or less, 6.3 weight% or less, 6.2 weight% or less, 6.1 weight% or less, or 6 weight% or less. In the present invention, if the water-in-oil surfactant falls outside the above content range, emulsion stability is poor, so emulsification does not occur, and even if emulsification occurs, separation occurs within a short period of time at room temperature.

[0031] C. Oil

[0032] The cosmetic composition of the present invention comprises oil. Any oil known in the field may be used as the oil, for example, one or more selected from the group consisting of hydrocarbon oils, ester oils, silicone oils, higher fatty acids and / or fatty alcohols, animal oils, vegetable oils, and mineral oils, and it is most preferable to use one or more selected from the group consisting of ester oils, hydrocarbon oils, silicone oils, and mixtures thereof.

[0033] In the present invention, oil may be included in an amount of 30 to 70 weight% based on the total weight of the composition. In the present invention, the oil may be 30 weight% or more, 35 weight% or more, 40 weight% or more, 45 weight% or more, 50 weight% or more, 55 weight% or more, or 60 weight% or more, and may be 70 weight% or less, 67 weight% or less, 65 weight% or less, 63 weight% or less, 60 weight% or less, 57 weight% or less, 55 weight% or less, or 53 weight% or less. In the present invention, if the oil content is less than the above amount, it is difficult to produce a composition having high gloss, and a lot of paint is felt when applied; if the content exceeds the above amount, color development and coloring are reduced, and emulsion stability is poor, so there is a possibility of emulsion separation even at room temperature, and a phenomenon of separation occurring even more rapidly at high temperatures.

[0034] D. Purified water

[0035] The cosmetic composition of the present invention comprises purified water. In the present invention, the content of the purified water may be the remainder satisfying 100 weight% of the composition, and may be included in, for example, 20 to 50 weight% based on the total amount of the composition, or, as another example, 20 to 45 weight%, 20 to 40 weight%, 25 to 40 weight%, or 25 to 35 weight%.

[0036] E. Pigment

[0037] The cosmetic composition of the present invention may include a pigment. Any pigment known in the art may be used as the pigment, and inorganic pigments, organic pigments, or combinations thereof may be used.

[0038] In the present invention, the pigment may be included in an amount of 0.05 to 0.15 weight% based on the total weight of the composition. In the present invention, if the pigment is less than the above amount, the color development is low and the coloring power, which is an advantage of the water-in-oil type composition, is weak, and if the above amount is exceeded, the formulation stability may be reduced and transfer may become severe.

[0039] F. Polyol

[0040] The cosmetic composition of the present invention may include a polyol. Any polyol known in the field as a moisturizing ingredient may be used as the polyol, and may be one or more selected from the group consisting of propanediol, propylene glycol, butylene glycol, glycerin, and pentylene glycol.

[0041] The above polyol may be included in an amount of 1 to 10 weight% based on the total weight of the composition. In the present invention, the polyol may be 1 weight% or more, 2 weight% or more, 3 weight% or more, 4 weight% or more, or 5 weight% or more, and may be 10 weight% or less, 9 weight% or less, 8 weight% or less, 7 weight% or less, or 6 weight% or less. In the present invention, if the content of the polyol is less than the amount, a sufficient moisturizing effect, which is an advantage of the oil-in-water type composition, cannot be obtained, and there is a problem of low moisturizing duration; if the content is more than the amount, there is a problem of stickiness during use and reduced adhesion to the formulation.

[0042] G. Other additives

[0043] Meanwhile, the cosmetic composition of the present invention may further include additives commonly used in the technical field to which the present invention belongs, depending on the use, within a range that does not impede the purpose and effect of the present invention, and preferably may include at least one selected from the group consisting of thickeners, waxes, pigments, pearls, fragrances, sunscreens, antioxidants, preservatives, and preservatives, but is not limited thereto.

[0044] In the present invention, the aforementioned other additives may be contained in an amount of 0.1 to 10 weight percent.

[0046] Hereinafter, preferred embodiments are described to explain the present invention in more detail. However, the following embodiments are described solely for the purpose of illustrating the present invention and are not intended to limit the present invention.

[0047] <Preparation of cosmetic compositions>

[0048] An oil-in-water type cosmetic composition was prepared according to the composition (weight%) of Table 1 below.

[0049] Ingredients (Weight%) Examples Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Paid Cetyl PEG / PEG-10 / 1 Dimethicone 4.0 4.0 4.0 4.0 4.5 3.5 Polysorbate 60 2.5 2.5 2.0 3.0 2.5 2.5 Sorbitan isostearate 1.5 1.5 1.5 1.5 2.0 1.0 Polyglyceryl-4 isostearate 1.0 1.0 1.0 1.0 1.5 0.5 Seteares-20 0.5 0.5 0 1.0 0.5 0.5 Silicone oil and ester oil 52.0 32.0 52.0 52.0 52.0 52.0 premier purified water 25.1 45.1 26.1 27.1 23.6 26.6 pigment 0.1 0.1 0.1 0.1 0.1 0.1 polyol 8.0 8.0 8.0 8.0 8.0 8.0 Thickener 2.5 2.5 2.5 2.5 2.5 2.5 antiseptic 2.8 2.8 2.8 2.8 2.8 2.8 Total 100.0 100.0 100.0 100.0 100.0 100.0

[0050] Specifically, after weighing according to the composition of Table 1 above, the oil phase was heated to 70°C to dissolve and uniformly dispersed using a disperser at 1000 rpm for 15 minutes. Purified water at 75°C was used for the aqueous phase, and after stirring at 4000 rpm for 1 minute using a homogenizer, the oil phase was added and emulsified at 7000 rpm for 15 minutes. Subsequently, the mixture was cooled to 35°C, a thickening agent was added, and the mixture was stirred for 7 minutes to prepare an oil-in-water type cosmetic composition.

[0051] Gloss power test

[0052] A gloss test was performed on the compositions of the examples and comparative examples.

[0053] The gloss test was performed by applying each cosmetic composition prepared in Example and Comparative Example 1 to a test area, and then measuring the gloss level before and after application to compare and confirm the gloss.

[0054] Gloss was measured by applying a certain amount of the cosmetic composition to the test area (inner forearm) and drying it for 1 minute, then repeating the measurement three times using micro-TRI-gloss. The rate of increase or decrease in gloss before and after application was calculated using the average value of the 85° reflectance, and the results are shown in Table 2 below.

[0055] Before application Immediately after application Change rate before and after application (%) Examples 8 18 125 Comparative Example 1 8 14 75

[0056] As shown in Table 2, it was confirmed that the example had excellent gloss after application. On the other hand, Comparative Example 1 showed low gloss.

[0057] Figure 1 shows the results of visual observation of the gloss after application of the Example and Comparative Example 1.

[0058] As shown in Figure 1, it was visually confirmed that the gloss of the example was superior to that of Comparative Example 1.

[0059] From the gloss test, it can be seen that the water-in-oil type cosmetic composition of the present invention has excellent gloss.

[0060] Formulation stability test

[0061] Formulation stability tests were performed on the compositions of the examples and comparative examples.

[0062] The formulation stability test was performed by storing each composition prepared in Examples and Comparative Examples 2 to 5 in a constant temperature and humidity room at 25°C and 50°C for 4 weeks and visually observing changes in the formulation.

[0063] Figure 2 shows the appearance of the composition after storage at 25°C (a) and 50°C (b) as a result of the above test.

[0064] As shown in FIG. 2, the formulation of Example 1 remained stable for 4 weeks at both room temperature (25°C) and high temperature (50°C). On the other hand, Comparative Example 2, which had a low content of water-in-oil surfactant, showed an unstable emulsion state with phase separation observed even at room temperature (25°C). Comparative Example 3, which had a high content of water-in-oil surfactant, Comparative Example 4, which had a high content of water-in-oil surfactant, and Comparative Example 5, which had a low content of water-in-oil surfactant, showed phase separation at a high temperature (50°C).

[0065] From the formulation stability test, it was confirmed that the water-in-oil type cosmetic composition of the present invention does not separate phases and maintains a stable formulation for a long period even at high temperatures.

[0066] Moisture retention test

[0067] A moisturizing duration test was performed on the compositions of the examples and comparative examples.

[0068] The moisturizing duration test was performed by applying the composition prepared in the example to the skin and measuring the skin moisture level immediately after application, and after 30 minutes, 2 hours, 4 hours, and 8 hours. A corneometer (CK, Germany) was used as the measuring instrument, and the average of three measurements was compared with the skin moisture level before application. The results are shown in Figure 3.

[0069] As shown in Figure 3, the example showed that skin moisture levels increased significantly after application and remained high for 8 hours.

[0070] From the moisture retention test, it can be seen that the water-in-oil type cosmetic composition of the present invention has excellent moisture retention.

Claims

Claim 1 A water-in-oil type cosmetic composition comprising an oil phase and a water phase, wherein the oil phase comprises a water-in-oil type surfactant and a water-in-oil type surfactant, wherein the oil phase comprises 50 to 80 weight% based on the total weight of the cosmetic composition, the water-in-oil type surfactant comprises 2.5 to 3.5 weight% based on the total weight of the composition, and the water-in-oil type surfactant comprises 5.5 to 6.5 weight% based on the total weight of the composition, wherein the water-in-oil type surfactant has an HLB (Hydrophile-Lipophile Balance) value of 10 or higher, and the water-in-oil type surfactant has an HLB value of 8 or lower. Claim 2 A cosmetic composition of claim 1, wherein the water-in-oil type surfactant is one or more selected from the group consisting of polysorbate 60, glyceryl stearate, ceteareth-20, and PEG-100 stearate. Claim 3 delete Claim 4 A water-in-oil type cosmetic composition according to claim 1, wherein the water-in-oil type surfactant is one or more selected from the group consisting of cetyl PEG / PPG-10 / 1 dimethicone, PEG-10 dimethicone, lauryl PEG-10 tris(trimethylsiloxy)silylethyl dimethicone, sorbitan isostearate, and sorbitan stearate. Claim 5 delete Claim 6 A water-in-oil type cosmetic composition according to claim 1, wherein the weight ratio of the water-in-oil type surfactant to the water-in-oil type surfactant is 1:1.6 to 2.

4. Claim 7 A water-in-oil type cosmetic composition according to claim 1, wherein the oil phase comprises 30 to 70 weight percent of oil based on the total weight of the composition.

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