Cosmetic composition having excellent efficacy in blocking harmful rays including ultraviolet rays

Abstract

A cosmetic composition having excellent efficacy in blocking harmful rays including ultraviolet rays of the present invention comprises three or more types of ultraviolet blocking agents, an emulsifier, and a thickener, and thus the three or more types of ultraviolet blocking agents can be stabilized in a formulation, so that the composition can exhibit excellent blocking effects against harmful rays including ultraviolet rays, and continuously exhibit excellent blocking effects against harmful rays even during sweating or underwater activities due to outstanding long-lasting water resistance.

Description

Cosmetic composition with excellent efficacy in blocking harmful rays including ultraviolet rays

[0001] The present invention relates to a cosmetic composition having excellent efficacy in blocking harmful rays including ultraviolet rays, and more particularly, to a cosmetic composition in the form of an emulsion having excellent efficacy in blocking harmful rays by stably including three or more types of ultraviolet ray blocking agents in the formulation.

[0002] Electromagnetic waves can be classified into infrared rays, visible light, and ultraviolet rays according to their wavelength. Among them, ultraviolet rays exposed through sunlight have short wavelengths and strong energy, so they can cause skin aging and wrinkles even with short exposure. Among ultraviolet rays, ultraviolet-A rays (UVA; ultraviolet rays with a wavelength of 320 to 400 nm), which are classified as long-wavelength ultraviolet rays, are known to reach the dermis layer of the skin due to their longer wavelength than ultraviolet rays in other ranges, causing tanning and long-term skin damage due to aging. Ultraviolet-B rays (UVB; ultraviolet rays with a wavelength of 280 to 320 nm) are rays that directly have a negative effect on the skin, tanning the skin and causing skin cancer. Ultraviolet-C rays (UVC; ultraviolet rays with a wavelength of less than 280 nm), which are the shortest wavelength ultraviolet rays, are ultraviolet rays with the highest energy. Although they are completely absorbed by the ozone layer and only a very small amount reaches the Earth's surface, they are known to cause burns, skin cancer, and cataracts when exposed to humans. Additionally, blue light, a type of visible light, has a wavelength of approximately 400 to 500 nm and is one of the strongest energy light that reaches the retina. Long-term exposure can have a harmful effect on the skin.

[0003] In this way, since there are various types of harmful rays that are harmful to the skin, protective measures are needed for a wide range of wavelengths.

[0004] Most commercially available water-in-oil sunscreens either contain only inorganic sunscreens or a combination of organic and inorganic sunscreens. Organic sunscreens are typically oil-soluble, making them less common in the water phase. Furthermore, thickeners are often included to ensure proper formulation, and most oil-soluble thickeners are applied to the oil phase.

[0005] The inventors of the present invention have continued their research to effectively block electromagnetic waves over a wide range through a single product, and as a result, have completed a cosmetic composition that can effectively block a wide range of harmful rays by stably including both an organic or inorganic UV blocker in the water phase and the oil phase.

[0006] The purpose of the present invention is to provide a cosmetic composition having excellent blocking effect against harmful rays including ultraviolet rays.

[0007] 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.

[0008] According to an embodiment of the present invention, a cosmetic composition in the form of an emulsion comprising a water phase and an oil phase, which comprises three or more kinds of ultraviolet ray blocking agents, an emulsifier and a thickening agent, wherein the three or more kinds of ultraviolet ray blocking agents include a first ultraviolet ray blocking agent, a second ultraviolet ray blocking agent and a third ultraviolet ray blocking agent, thereby exhibiting excellent efficacy in blocking harmful rays including ultraviolet ray, is provided.

[0009] The cosmetic composition of the present invention stably includes three or more types of UV blocking agents in the formulation, thereby not only demonstrably showing excellent blocking efficacy against ultraviolet rays (UVA, UVB, and UVC) in a wide range of wavelength ranges, but also showing excellent blocking efficacy against other harmful rays (such as blue light) including ultraviolet rays.

[0010] In addition, the cosmetic composition includes a UV blocking agent in both the water phase and the oil phase, thereby reducing the variation in harmful ray blocking efficacy according to the size of the emulsified particles, thereby exhibiting a uniform harmful ray blocking efficacy.

[0011] In addition, the cosmetic composition has excellent long-term water resistance and can exhibit excellent harmful light blocking efficacy for a long period of time from the time of application to the skin.

[0012] 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.

[0013] Figure 1a shows the absorption rate for harmful light in the wavelength range of 250 to 450 nm of Example 1.

[0014] Figure 1b shows the absorption rate for harmful light in the wavelength range of 250 to 450 nm of Comparative Example 1.

[0015] According to an embodiment of the present invention, a cosmetic composition in the form of an emulsion comprising a water phase and an oil phase, which comprises three or more kinds of ultraviolet ray blocking agents, an emulsifier and a thickening agent, wherein the three or more kinds of ultraviolet ray blocking agents include a first ultraviolet ray blocking agent, a second ultraviolet ray blocking agent and a third ultraviolet ray blocking agent, thereby exhibiting excellent efficacy in blocking harmful rays including ultraviolet ray, is provided.

[0016] Additionally, the first ultraviolet ray blocking agent may be included in the water-soluble portion.

[0017] Additionally, the second ultraviolet ray blocker and the third ultraviolet ray blocker may be included in the oil phase.

[0018] Additionally, the emulsifier and thickener may be included in a weight ratio of 1:0.01 to 0.6.

[0019] Additionally, the emulsifier may include a polyglyceryl emulsifier.

[0020] In addition, the polyglyceryl-based emulsifier is polyglyceryl-5 polyricinoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-4 isostearate, polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate, polyglyceryl-2 oleate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, It may contain at least one of polyglyceryl-2 stearate and polyglyceryl-4 stearate.

[0021] Additionally, the emulsifier may be included in an amount of 0.1 to 7.0 wt% based on the total weight of the cosmetic composition.

[0022] Additionally, the thickener may be included in the water component.

[0023] Additionally, the thickener may include a thickener included in polysaccharides or hydrolyzates thereof.

[0024] In addition, the thickener included in the polysaccharides or their hydrolyzates may include at least one of xanthan gum, sclerotium gum, Caesalpinia spinosa gum, biosaccharide gum, cellulose gum, guar gum, locust bean gum, acacia senegal gum, and diutan gum.

[0025] Additionally, the thickener may be included in an amount of 0.01 to 2.5 wt% based on the total weight of the cosmetic composition.

[0026] In addition, the first UV blocking agent may include at least one of Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Tris-Biphenyl Triazine, Phenylbenzimidazole Sulfonic Acid, Terephthalylidene Dicamphor Sulfonic Acid, Titanium Dioxide, and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine.

[0027] In addition, the second UV blocker may include at least one of Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Ethylhexyl Methoxycinnamate, Ethylhexyl Salicylate, Octocrylene, Diethylhexyl Butamido Triazone, Homosalate, Isoamyl p-Methoxycinnamate, and Polysilicon-15. there is.

[0028] Additionally, the third UV blocking agent may include at least one of titanium dioxide and zinc oxide.

[0029] Additionally, the harmful rays including the above ultraviolet rays may include those having a wavelength of 250 to 500 nm.

[0030] 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.

[0031] 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.

[0032]

[0033] According to an embodiment of the present invention, a cosmetic composition in an emulsified form, which has excellent blocking efficacy against harmful rays including ultraviolet rays, is provided. The cosmetic composition of the present invention comprises three or more types of ultraviolet blockers, an emulsifier, and a thickener, wherein the three or more types of ultraviolet blockers include a first ultraviolet blocker, a second ultraviolet blocker, and a third ultraviolet blocker. Specifically, the cosmetic composition is characterized in that it has excellent blocking efficacy against harmful rays in a wide range of wavelengths by stabilizing the three or more types of ultraviolet blockers in an emulsified form through a combination of the emulsifier and the thickener.

[0034] In this specification, harmful light rays including ultraviolet rays refer to light rays including ultraviolet A (UVA; ultraviolet rays having a wavelength of 320 to 400 nm), ultraviolet B (UVB; ultraviolet rays having a wavelength of 280 to 320 nm), ultraviolet C (UVC; ultraviolet rays having a wavelength of 250 to 280 nm) in a certain wavelength range, and blue light (visible light of the blue light series having a wavelength of 400 to 500 nm). The cosmetic composition of the present invention has a blocking effect against blue light of about 400 to 500 nm, and thus has the effect of blocking a wide range of harmful light rays in the wavelength range of 250 to 500 nm.

[0035]

[0036] In one embodiment, the first UV blocking agent may be included in the water phase. While the UV blocking agent is typically applied to the oil phase in an emulsified cosmetic composition, the emulsified cosmetic composition according to the embodiment of the present invention can have a uniform and excellent harmful light blocking effect by stably applying the first UV blocking agent to the water phase.

[0037] In a specific embodiment, the aqueous phase of an emulsified cosmetic composition may include a first UV filter and a thickening agent, and the oil phase may include a second UV filter and a third UV filter. When the UV filter component in the emulsified cosmetic composition is applied only to the oil phase, there may be a local difference in the harmful light blocking efficacy depending on the size of the emulsified particles in the formulation. However, in the emulsified cosmetic composition according to an embodiment of the present invention, since three or more types of UV filter are stably applied to the aqueous phase and the oil phase, the harmful light blocking efficacy may be uniform and excellent. In addition, since the thickening agent is applied to the aqueous phase, the UV filter may be stabilized in the formulation, and may contribute to the formation and stabilization of the emulsified particles.

[0038] In one embodiment, the first sunscreen may include at least one of Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Tris-Biphenyl Triazine, Phenylbenzimidazole Sulfonic Acid, Terephthalylidene Dicamphor Sulfonic Acid, Titanium Dioxide, and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, and specifically, at least one of Methylene Bis-Benzotriazolyl Tetramethylbutylphenol and Tris-Biphenyl Triazine.

[0039] In one embodiment, the first sunscreen may be present in an amount of 0.01 to 15 wt%, specifically 0.1 to 10 wt%, and more specifically 0.5 to 5 wt%, based on the total weight of the cosmetic composition.

[0040]

[0041] In one embodiment, a second UV blocking agent may be included in the oil phase. The second UV blocking agent may exhibit excellent harmful ray blocking efficacy by being stably included in the oil phase.

[0042] In one embodiment, the second sunscreen may include at least one of Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Ethylhexyl Methoxycinnamate, Ethylhexyl Salicylate, Octocrylene, Diethylhexyl Butamido Triazone, Homosalate, Isoamyl p-Methoxycinnamate, and Polysilicon-15. and specifically, may include at least one of ethylhexyl triazone, diethylaminohydroxybenzoylhexyl benzoate, polysilicone-15, and bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0043] In one embodiment, the second sunscreen may be included in an amount of 0.1 to 30 wt%, specifically 0.5 to 20 wt%, and more specifically 1 to 15 wt%, based on the total weight of the cosmetic composition.

[0044]

[0045] In one embodiment, a third UV blocker may be included in the oil phase. The third UV blocker may exhibit excellent harmful ray blocking efficacy by being stably dispersed in the oil phase.

[0046] In one embodiment, the third UV blocker may include an inorganic UV blocker. In a specific embodiment, the inorganic UV blocker may include at least one of titanium dioxide and zinc oxide. In a specific embodiment, the third UV blocker may be provided by being physically or chemically modified by a modifier. Examples of the modifier include, but are not limited to, aluminum hydroxide, triethoxycaprylylsilane, and stearic acid.

[0047] In one embodiment, the third sunscreen may be included in an amount of 0.1 to 50 wt%, specifically 0.5 to 45 wt%, and more specifically 1 to 40 wt%, based on the total weight of the cosmetic composition.

[0048]

[0049] In one embodiment, the emulsifier may serve to form stable emulsion particles, improve the dispersibility of the third sunscreen, and improve the stability of the first sunscreen and the second sunscreen within the emulsion formulation, thereby maintaining excellent harmful light blocking efficacy for a long period of time.

[0050] In one embodiment, the emulsifier may include a polyglyceryl emulsifier. The polyglyceryl emulsifier can make the emulsified particles small and uniform in size, and can exert an attractive force with the thickener contained in the aqueous phase, thereby preventing phase separation due to aggregation between emulsified particles, even during long-term storage, thereby forming a stable emulsified formulation.

[0051] In one embodiment, the polyglyceryl-based emulsifier is polyglyceryl-5 polyricinoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-4 isostearate, polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate, polyglyceryl-2 oleate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, It may include at least one of polyglyceryl-2 stearate and polyglyceryl-4 stearate, and specifically, polyglyceryl-5 polyricinoleate.

[0052] In one embodiment, the emulsifier may be included in an amount of 0.1 to 7.0 wt%, specifically 0.5 to 6.0 wt%, and more specifically 1.5 to 5.0 wt%, based on the total weight of the cosmetic composition. If the emulsifier is included in an amount of less than 0.1 wt%, emulsified particles may not be formed smoothly, and if the emulsifier is included in an amount of more than 7.0 wt%, the viscosity of the cosmetic composition may be significantly reduced, making it unsuitable for application.

[0053] In one embodiment, the thickener may serve to further enhance the stability of the emulsified particles.

[0054] In a specific embodiment, the thickener may be included in the aqueous phase of a cosmetic composition in the form of an emulsion, thereby stabilizing the first UV blocking component, etc. included in the aqueous phase and contributing to the formation and stabilization of emulsion particles.

[0055] In one embodiment, the thickener may include at least one thickener included in polysaccharides or hydrolyzates thereof. Examples of the thickener included in the polysaccharides or hydrolyzates thereof include at least one of xanthan gum, sclerotium gum, Caesalpinia spinosa gum, biosaccharide gum, cellulose gum, cyamposis tetragonoloba gum, locust bean gum, acacia senegal gum, and diutan gum. In a specific embodiment, the thickener of polysaccharides may include xanthan gum.

[0056] In one embodiment, the thickener may be included in an amount of 0.01 to 2.5 wt%, specifically 0.01 to 2.0 wt%, and more specifically 0.01 to 1.5 wt%, based on the total weight of the cosmetic composition. When the thickener is included in the above amount, the stability of the formulation may be further improved.

[0057] In one embodiment, the cosmetic composition of the present invention may include an emulsifier and a thickener in a weight ratio of 1:0.01 to 0.6. When included in the above weight ratio, stable emulsified particles can be formed, and a cosmetic composition having a viscosity suitable for application can be formed.

[0058]

[0059] In one embodiment, the cosmetic composition of the present invention in the form of an emulsion having excellent efficacy in blocking harmful rays including ultraviolet rays may additionally include oil, a preservative, or a functional ingredient.

[0060] The above oil acts as a solvent for the oil phase, maintains moisture in the skin, and can provide a continuous moisturizing feeling. Silicone oil, hydrocarbon oil, ester oil, etc. can be used. However, it is not limited thereto, and oils that can be generally used in the art can be appropriately selected without limitation. Specific examples of the above oil may include ester oils such as C12-15 alkyl benzoate, dibutyl adipate, butylene glycol dicaprylate / dicaprate, ethylhexyl stearate, and propyl heptyl caprylate; silicone oils such as disiloxane, caprylyl methicone, and methyl trimethicone; and hydrocarbon oils such as isododecane, hydrogenated poly(C6-14 olefin), and C15-19 alkane.

[0061] The above preservative is used to enhance the effect of preservation, and for example, at least one of ethylhexylglycerin, 1,2-hexanediol, caprylyl glycol, phenoxyethanol, and glyceryl caprylate may be used, but is not limited thereto, and any preservative that can be generally used in the art may be appropriately selected without limitation.

[0062] 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.

[0063] In addition, the cosmetic composition of the present invention, which is an emulsified formulation with excellent efficacy in blocking harmful rays including ultraviolet rays, may additionally include ingredients included in general cosmetic compositions, and may include, for example, polyols, functional ingredients, a feeling-regulating agent, an emulsifying stabilizer, a skin conditioning agent, an ion sequestering agent, a sterilizing agent, a pH regulator, an antioxidant, alcohol, plant extracts, fragrances, a feeling-regulating agent, an emollient, etc.

[0064] 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.

[0065]

[0066] In one embodiment, the cosmetic composition in the form of an emulsion having excellent efficacy in blocking harmful rays, including ultraviolet rays, of the present invention may be a water-in-oil type. The term "water-in-oil type" refers to a state in which an aqueous phase is dispersed in the form of particles in an oil phase, and may include not only water-in-oil (W / O) but also multiple emulsion formulations such as oil-in-water-in-oil (O / W / O). If the cosmetic composition in the form of an emulsion is manufactured in a water-in-oil type in which the external continuous phase is an oil phase, the sustained water resistance may be further improved.

[0067] In addition, the cosmetic composition of the present invention, which is an emulsified formulation with excellent efficacy in blocking harmful rays including ultraviolet rays, may be provided in a formulation conventionally manufactured in the art. For example, it may be formulated as an oil-in-water (O / W) or water-in-oil-in-water (W / O / W) type emulsion formulation. However, the present invention is not limited thereto, and the composition may also be provided in various formulations such as a solution, suspension, emulsion, solid, oil, powder, paste, or foam aerosol, mist, etc.

[0068] In one embodiment, the cosmetic composition may be provided as a gel formulation, a lotion formulation, a cream formulation, a low viscosity liquid formulation, a fluid formulation including a water-in-oil emulsion, and specifically may be provided as a lotion formulation.

[0069] In one embodiment, the cosmetic composition of the present invention can be manufactured into various cosmetics with excellent efficacy in blocking harmful rays, including ultraviolet rays. Examples of such cosmetics include sun care products such as sunscreens, sun sticks, sun milks, sun cushions, sun sprays, and sun lotions; functional cosmetics such as nourishing creams, essences, ampoules, moisturizing creams, and eye creams; and basic cosmetics such as toners and lotions. However, the present invention is not limited thereto.

[0070]

[0071] Hereinafter, examples and experimental examples are presented to explain the present invention more specifically, but the present invention is not limited thereto.

[0072] Experimental Example 1. Comparative experiment according to the weight ratio of emulsifier and thickener.

[0073] (1) Manufacturing of examples and comparative examples

[0074] In order to confirm the optimal weight ratio of the emulsifier and the thickener in the present invention, examples and comparative examples of water-in-oil type were prepared as shown in Table 1 below. Specifically, polyglyceryl-5 polyricinoleate was used as an emulsifier, xanthan gum was used as an aqueous thickener, methylenebis-benzotriazolyltetramethylbutylphenol was used as a first UV blocker, ethylhexyl triazone, diethylaminohydroxybenzoylhexyl benzoate, polysilicone-15, and bis-ethylhexyloxyphenol methoxyphenyl triazine were used as second UV blockers, and titanium dioxide and zinc oxide were used as third UV blockers. The unit in Table 1 below is weight%.

[0075]

[0076]

[0077] The specific manufacturing method is as follows.

[0078] First, phase A was dissolved in an oil-phase beaker at approximately 80°C, phases B to D were additionally mixed and dispersed, and phase E was dispersed in an aqueous beaker at room temperature. The oil-phase beaker in which phases A to D were dispersed was dispersed using a HOMO MIXER at 4000 rpm for 6 minutes, and then phase E was slowly added to the oil-phase beaker. Thereafter, the mixture was stirred for an additional 8 minutes at 5600 rpm using a HOMO MIXER to complete the examples and comparative examples.

[0079]

[0080] (2) Formulation stability evaluation and viscosity measurement

[0081] Formulation stability evaluation and viscosity measurement were conducted on the examples and comparative examples manufactured with the same ingredients and contents as in Table 1 above. The specific experimental method is as follows.

[0082] In the case of formulation stability evaluation, it was observed whether a uniform water-in-oil formulation was formed without separation of the oil and water phases with the naked eye, whether agglomeration occurred, and whether the process of cooling from high temperature (40℃), room temperature (25℃), low temperature (5℃), and high temperature to room temperature, low temperature, and then heating again from low temperature to room temperature and high temperature was repeated, and whether the formulation immediately after manufacturing was still maintained after 3 months of storage. If the formulation stability was not maintained in any of the above four temperature environments, it was judged as failed.

[0083] For viscosity measurement, the viscosity of the above examples and comparative examples was measured using a Brookfield viscometer LVT under the conditions of LV 4 pin, 6 rpm, and 1 min at room temperature (25°C), and the measured viscosity is shown in Table 2 below.

[0084]

[0085] (3) Measurement of harmful light blocking effect and water resistance

[0086] To confirm the harmful light blocking effect and water resistance of the above examples and comparative examples, SPF measurements were conducted in vitro.

[0087] Specifically, in the case of measuring the effect of blocking harmful rays, the above examples and comparative examples were applied to a PMMA plate at 1.3 mg / cm 2 Each sample was taken and evenly applied for 30 seconds, and then dried in a dark room for 15 minutes to prepare the sample. The in vitro SPF value before immersion was measured using a Labsphere UV 2000S In VitroSPF Analyzer. The harmful light blocking index is the average value of three experiments, and the measurement results are shown in Table 2 below. In addition, Fig. 1a shows the absorption rate for harmful light in the wavelength range of 250 to 450 nm for Example 1, and Fig. 1b shows the absorption rate for harmful light in the wavelength range of 250 to 450 nm for Comparative Example 1.

[0088] In addition, in order to measure the water resistance, the examples and comparative examples were applied to the PMMA plate at 1.3 mg / cm as in the measurement of the harmful light blocking effect. 2 Each sample was taken and evenly applied for 30 seconds, then attached to the bottom of a 1L beaker, 600ml of distilled water at 30℃ was added, and the mixture was stirred for 30 minutes at a rotation speed of 180rpm using an Aji mixer, dried for 30 minutes, and the SPF value was measured. The SPF value was measured in the same way as the method for measuring the harmful light blocking effect mentioned above. The measurement results by the above measurement method are shown in Table 2.

[0089]

[0090] According to Table 2 above, in the case of Examples 1 to 3 containing an emulsifier and a thickener in an appropriate weight ratio, it was confirmed that a stable formulation having a viscosity suitable for application was formed, and that it had a remarkably excellent SPF value and also excellent water resistance. In addition, according to FIGS. 1a and 1b, it was confirmed that the absorption rate of Example 1 was remarkably better than that of Comparative Example 1 in the harmful light in all wavelength ranges from 250 to 450 nm. On the other hand, in the case of Comparative Example 1, which contained an excessive amount of emulsifier compared to the weight of thickener, a stable formulation was formed, but the viscosity was significantly reduced, making it unsuitable for application, and the SPF value was also confirmed to be significantly low. In the case of Comparative Example 2, which did not contain an emulsifier, the formulation itself was not formed, so the viscosity and harmful light blocking efficacy could not be measured.

[0091]

[0092] Therefore, it was confirmed that including an emulsifier and a thickener in an appropriate weight ratio is an important component in the manufacture of a cosmetic composition in the form of an emulsion formulation having excellent efficacy in blocking harmful rays including ultraviolet rays as intended by the present invention.

[0093]

[0094] Experimental Example 2. Comparative experiment according to the type of thickener and whether the thickener includes a water component.

[0095] (1) Manufacturing of comparative examples

[0096] In order to confirm the effect according to the type of thickener and the phase in which the thickener is included in the present invention, comparative examples were prepared as shown in Table 3 below using the same manufacturing method as Experimental Example 1. Specifically, the thickener (xanthan gum) of Phase E as in Example 1 was included in Phase B, and the remaining ingredients and contents were the same as in Example 1. The contents in Table 3 below are in weight %.

[0097]

[0098]

[0099] (2) Formulation stability evaluation

[0100] In the case of Comparative Example 3 in which the thickener of the present invention was included in the oil phase, it was confirmed that the thickener did not sufficiently interact with the oil, so it was not properly dispersed or swelled in the oil phase, and emulsification was not homogeneous, so that a cosmetic composition in the form of an emulsion was not formed.

[0101]

[0102] Therefore, it was confirmed that including a specific thickener of the present invention in the water is an important component in the production of a cosmetic composition in the form of an emulsion having excellent efficacy in blocking harmful rays including ultraviolet rays as desired by the present invention.

[0103]

[0104] Experimental Example 3. Comparative Experiment by Type of Emulsifier

[0105] (1) Manufacturing of examples and comparative examples

[0106] In order to confirm the effect according to the type of emulsifier in the present invention, examples and comparative examples were prepared as shown in Table 4 below using the same manufacturing method as Experimental Example 1. Specifically, only the emulsifier in Phase C of Example 1 was changed to a different component, and the remaining components and contents are the same as in Example 1. The contents in Table 4 below are in weight percent.

[0107]

[0108]

[0109] (2) Formulation stability evaluation and viscosity measurement

[0110] For the examples and comparative examples manufactured according to Table 4 above, formulation stability evaluation and viscosity measurement were performed in the same manner as Experimental Example 1, and the results are shown in Table 5 below.

[0111]

[0112] (3) Measurement of harmful light blocking effect and water resistance

[0113] For the examples and comparative examples manufactured according to Table 4 above, the harmful light blocking effect and water resistance were measured using the same method as Experimental Example 1, and the results are shown in Table 5 below.

[0114]

[0115]

[0116] According to Table 5 above, both Examples 4 and 5, which used a polyglyceryl-based emulsifier like Example 1, formed stable emulsified compositions, and were confirmed to have excellent harmful light blocking efficacy and water resistance. On the other hand, in the case of Comparative Examples 4 and 5, which used emulsifiers other than polyglyceryl-based emulsifiers, both formed emulsified compositions, but the stability was very poor, with phase separation observed within 3 days under all temperature conditions. Accordingly, it was confirmed that the harmful light blocking efficacy was also significantly poorer than that of the Examples.

[0117]

[0118] Therefore, it was confirmed that including a specific emulsifier of the present invention is an important component in the manufacture of a cosmetic composition in the form of an emulsion formulation having excellent efficacy in blocking harmful rays including ultraviolet rays as desired by the present invention.

[0119]

[0120] Experimental Example 4. Efficacy Test According to the Inclusion of Polysaccharide Thickeners

[0121] (1) Manufacturing of the example

[0122] In order to confirm that the present invention is implemented when a specific thickener is used, an example was prepared based on Example 1 by changing only the thickener component as shown in Table 6 below. Specifically, a polysaccharide thickener other than xanthan gum was used as the thickener component.

[0123]

[0124]

[0125] (2) Formulation stability evaluation and viscosity measurement

[0126] For the examples manufactured according to Table 6 above, formulation stability evaluation and viscosity measurement were performed in the same manner as Experimental Example 1, and the results are shown in Table 7 below.

[0127]

[0128] (3) Measurement of harmful light blocking effect and water resistance

[0129] For the examples manufactured according to Table 6 above, the harmful light blocking effect and water resistance were measured using the same method as Experimental Example 1, and the results are shown in Table 7 below.

[0130]

[0131]

[0132] According to Table 7 above, Examples 6 to 13 using a polysaccharide thickener, as in Example 1, all formed a stable emulsified composition, and it was confirmed that the composition had excellent harmful light blocking efficacy and water resistance.

[0133]

[0134] Therefore, it was confirmed that including polysaccharides or hydrolyzates thereof as a specific thickener in the present invention is an important component in the production of a cosmetic composition in the form of an emulsion having excellent efficacy in blocking harmful rays including ultraviolet rays as desired by the present invention.

[0135]

[0136] Experimental Example 5. Comparative Experiment with or without Inclusion of Three or More Types of Sunscreen

[0137] (1) Manufacturing of examples and comparative examples

[0138] In order to confirm the effect according to the inclusion of three or more types of UV blockers in the present invention, examples and comparative examples were prepared as shown in Tables 8 and 9 below using the same manufacturing method as Experimental Example 1. Specifically, based on Example 1, Example 14 in Table 8 changed the first UV blocker to tris-biphenyltriazine, Example 15 changed the first UV blocker to terephthalylidene dicamphor sulfonic acid and bis-ethylhexyloxyphenol methoxyphenyltriazine, Example 16 further added titanium dioxide to the first UV blocker, Example 17 changed ethylhexyl triazone in the second UV blocker to homosalate and ethylhexyl salicylate, and Example 18 changed bis-ethylhexyloxyphenol methoxyphenyltriazine in the second UV blocker to homosalate. In addition, based on Example 1, Comparative Example 6 in Table 9 excluded the first UV blocking agent component, Comparative Example 7 excluded the third UV blocking agent, and Comparative Example 8 excluded the second UV blocking agent. The remaining ingredients and contents are the same as Example 1. The contents in Tables 8 and 9 below are in weight percent.

[0139]

[0140]

[0141]

[0142] (2) Formulation stability evaluation and viscosity measurement

[0143] For the examples and comparative examples manufactured according to Tables 8 and 9 above, formulation stability evaluation and viscosity measurement were performed in the same manner as Experimental Example 1, and the results are shown in Table 10 below.

[0144]

[0145] (3) Measurement of harmful light blocking effect and water resistance

[0146] For the examples and comparative examples manufactured according to Tables 8 and 9 above, the harmful light blocking effect and water resistance were measured in the same manner as Experimental Example 1, and the results are shown in Table 10 below.

[0147]

[0148] According to Table 10 above, Examples 14 to 18, which contained all three types of UV blockers of the present invention, formed stable emulsified compositions and showed excellent SPF values ​​and water resistance, confirming excellent harmful light blocking effects, whereas when any one of the three types of UV blockers was not included, it was confirmed to have a significantly reduced SPF value compared to the examples. In addition, Comparative Examples 6 and 7, which did not contain the first UV blocker or the third UV blocker, had a somewhat lower viscosity than the examples, and Comparative Example 8, which did not contain the second UV blocker, had a viscosity so high that it could not be measured, confirming that it was unsuitable for application.

[0149]

[0150] Therefore, it was confirmed that including three or more types of UV blocking agents of the present invention is an important component in the manufacture of a cosmetic composition in the form of an emulsion formulation having excellent efficacy in blocking harmful rays including UV rays as desired by the present invention.

[0151]

[0152] 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 cosmetic composition in the form of an emulsion formulation including an aqueous phase and an oil phase, Contains three or more types of sunscreens, emulsifiers and thickeners, A cosmetic composition having excellent blocking efficacy against harmful rays including ultraviolet rays, wherein the above three or more types of ultraviolet blockers include a first ultraviolet blocker, a second ultraviolet blocker, and a third ultraviolet blocker.

2. In paragraph 1, A cosmetic composition, characterized in that the first ultraviolet ray blocking agent is included in the water-soluble portion.

3. In paragraph 1, A cosmetic composition wherein the second ultraviolet ray blocker and the third ultraviolet ray blocker are included in the oil phase.

4. In paragraph 1, A cosmetic composition, wherein the emulsifier and thickener are included in a weight ratio of 1:0.01 to 0.

6.

5. In paragraph 1, A cosmetic composition comprising the above emulsifier, a polyglyceryl emulsifier.

6. In paragraph 5, The above polyglyceryl emulsifier is polyglyceryl-5 polyricinoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-4 isostearate, polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate, polyglyceryl-2 oleate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, A cosmetic composition comprising at least one of polyglyceryl-2 stearate and polyglyceryl-4 stearate.

7. In paragraph 1, A cosmetic composition, wherein the emulsifier is contained in an amount of 0.1 to 7.0 wt% based on the total weight of the cosmetic composition.

8. In paragraph 1, A cosmetic composition in which the thickener is included in the water-soluble portion.

9. In paragraph 1, A cosmetic composition comprising a thickener, wherein the thickener is a polysaccharide or a hydrolyzate thereof.

10. In paragraph 9, A cosmetic composition comprising at least one of the following: a thickener included in the polysaccharides or hydrolyzates thereof, xanthan gum, sclerotium gum, Caesalpinia spinosa gum, biosaccharide gum, cellulose gum, cyamposis tetragonoloba gum, locust bean gum, acacia senegal gum, and diutan gum.

11. In paragraph 1, A cosmetic composition, wherein the thickener is contained in an amount of 0.01 to 2.5 wt% based on the total weight of the cosmetic composition.

12. In paragraph 1, A cosmetic composition comprising the first UV blocking agent, at least one selected from the group consisting of methylene bis-benzotriazolyl tetramethylbutylphenol, tris-biphenyl triazine, phenylbenzimidazole sulfonic acid, terephthalylidene dicamphor sulfonic acid, titanium dioxide, and bis-ethylhexyloxyphenol methoxyphenyl triazine.

13. In paragraph 1, The second UV blocking agent is a cosmetic comprising at least one of Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Ethylhexyl Methoxycinnamate, Ethylhexyl Salicylate, Octocrylene, Diethylhexyl Butamido Triazone, Homosalate, Isoamyl p-Methoxycinnamate, and Polysilicon-15. Composition.

14. In paragraph 1, A cosmetic composition wherein the third UV blocking agent comprises at least one of titanium dioxide and zinc oxide.

15. In paragraph 1, A cosmetic composition, wherein the harmful rays including the above ultraviolet rays have a wavelength of 250 to 500 nm.

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