Cosmetic composition comprising quercetin with improved stability and UV protection effect

Abstract

According to an embodiment of the present application, a cosmetic composition comprising a quercetin and hyaluronic acid complex is provided. The cosmetic composition can provide an excellent UV blocking effect by including a quercetin and hyaluronic acid complex.

Description

Technology Field

[0001] The present application relates to a cosmetic composition with improved stability and UV blocking effect of quercetin. Background Technology

[0002] Quercetin is a flavonoid component with antioxidant, anti-inflammatory, and anti-aging effects, and is widely used in cosmetic compositions for skin protection or improvement of skin condition. However, quercetin has the characteristic of being easily oxidized or decomposed by environmental factors such as air, light, and heat, which makes it difficult to apply to cosmetic compositions.

[0003] In addition, techniques have been proposed to form a polymer matrix or immobilize quercetin within a polymer network to maximize the stability of quercetin. These polymer-quercetin complexes can provide advantages such as control of the release rate of quercetin, increased skin penetration, and improved environmental stability compared to existing nanoemulsion-based stabilization techniques.

[0004] However, complex formulations have limitations in that their physical and chemical stability may be compromised under specific environmental conditions (e.g., pH, temperature, humidity, etc.). For example, quercetin trapped within a polymer network may have structural vulnerabilities that make it susceptible to leaching out or oxidation if the interactions between polymers are weakened or hydrogen bonds are broken. Prior art literature

[0005] Republic of Korea Published Patent No. 10-2025-0019501 The problem to be solved

[0006] The purpose of this application is to provide a cosmetic composition with improved stability and UV blocking effect of quercetin. means of solving the problem

[0007] According to an embodiment of the present application, a cosmetic composition comprising a quercetin and hyaluronic acid complex is provided.

[0008] In addition, the hyaluronic acid complex may include a hyaluronic acid-based copolymer.

[0009] In addition, the hyaluronic acid-based copolymer may include a hyaluronic acid / polyisopropylacrylamide copolymer.

[0010] In addition, the above quercetin may be included in an amount of 0.001 to 0.35 weight% based on the total weight of the cosmetic composition.

[0011] In addition, the hyaluronic acid complex may be included in an amount of 0.00005 to 0.0006 weight% based on the total weight of the cosmetic composition.

[0012] In addition, the hyaluronic acid complex may stabilize the quercetin.

[0013] In addition, the above cosmetic composition may have improved formulation stability.

[0014] In addition, the cosmetic composition may further include a sunscreen.

[0015] In addition, the above-mentioned sunscreen may include one or more selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylaminohydroxybenzoyl hexyl benzoate, methylenebis-benzotriazolyl tetramethylbutylphenol, ethylhexyl triazone, polysilicon-15, or drometrizole trisiloxane.

[0016] In addition, the above cosmetic composition may have an SPF value of 55 or higher. Effects of the invention

[0017] According to an embodiment of the present application, by including a quercetin and hyaluronic acid complex, the stability of quercetin is improved, thereby providing a cosmetic composition with excellent formulation stability.

[0018] In addition, according to an embodiment of the present application, a cosmetic composition with excellent UV blocking effect can be provided by including quercetin with improved stability.

[0019] In addition, according to an embodiment of the present application, a cosmetic composition can be provided that exhibits a synergistic effect on UV blocking effect by using quercetin with improved stability in combination with a UV blocker.

[0020] The effects obtainable from the embodiments of the present application are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present application belongs from the description below. Brief explanation of the drawing

[0021] A brief description of each drawing is provided to help to better understand the drawings cited in this application. Figure 1 is a photograph showing the appearance of Comparative Example 1, Comparative Example 5, the control group, and Example 2 according to the formulation stability test. Specific details for implementing the invention

[0022] The structural or functional descriptions of the embodiments disclosed in this specification are merely illustrative for the purpose of explaining embodiments according to the technical concept of this application. Furthermore, embodiments according to the technical concept of this application may be implemented in various forms other than those disclosed in this specification. Additionally, the technical concept of this application is not to be interpreted as being limited to the embodiments described in this specification.

[0023] Among the physical properties mentioned in this specification, if the measurement temperature affects the property, the property is the one measured at room temperature and pressure unless otherwise specifically stipulated.

[0024] Unless otherwise specifically defined among the physical properties mentioned in this specification, said physical properties may basically follow the SI unit system. For example, weight may be expressed in kg units, and length may be expressed in m units.

[0025] The term "room temperature" as used in this specification refers to a natural temperature that is not heated or cooled, and may mean, for example, any temperature within the range of 10°C to 30°C, for example, about 15°C or higher, about 18°C ​​or higher, about 20°C or higher, about 23°C or higher, about 27°C or lower, or 25°C. Unless specifically defined in this specification, the unit of temperature is Celsius (°C).

[0026] The term "relatively high temperature relative to room temperature" as used in this specification refers to a temperature higher than room temperature, and may mean, for example, any temperature within the range of 30°C to 50°C, for example, about 35°C or higher, about 40°C or higher, or about 45°C or lower.

[0027] Among the physical properties mentioned in this specification, if the measured pressure affects the physical property, unless otherwise specifically defined, the physical property is the property measured at atmospheric pressure. The term atmospheric pressure used in this specification refers to natural pressure that is not pressurized or depressurized, and typically refers to atmospheric pressure within the range of about 700 mmHg to 800 mmHg.

[0028] As used in this specification, the terms a to b refer to a range between a and b, including a and b. For example, including a to b parts by weight is equivalent to including within the range of a to b parts by weight.

[0029] The terms used herein are for describing embodiments and are not intended to limit or / or restrict the present application. Singular expressions include plural expressions unless the context clearly indicates otherwise. Additionally, numbers used herein (e.g., First, Second, etc.) are merely identifiers to distinguish one component from another.

[0030] Furthermore, in this application, the term "or" is intended to mean an implicit "or" rather than an exclusive "or." That is, unless otherwise specified or evident from the context, "X uses A or B" is intended to mean one of the natural implicit substitutions. In other words, if X uses A; if X uses B; or if X uses both A and B, "X uses A or B" may apply to any of these cases. Additionally, the term "and / or" as used herein should be understood to refer to and include all possible combinations of one or more of the enumerated related configurations.

[0032] The term "Hyaluronic Acid Complex" as used in this specification refers to a structure formed by copolymerizing hyaluronic acid or its derivatives with one or more polymeric materials, or through physical mixing or chemical bonding.

[0033] The term "Hyaluronic Acid-Based Copolymer" as used herein refers to a polymer comprising hyaluronic acid or a derivative thereof as a monomer and other monomers bonded thereto, including, for example, block copolymers, graft copolymers, crosslinked copolymers, or multiblock copolymers.

[0035] According to an embodiment of the present application, a cosmetic composition comprising a quercetin and hyaluronic acid complex is provided.

[0036] Quercetin is a natural antioxidant found abundantly in fruits and vegetables. It is known to scavenge free radicals and protect cells from oxidative stress. Additionally, quercetin is known to have UV-blocking effects, and its UV-blocking effect can be enhanced when used in combination with sunscreens. However, due to the problem of low oxidative stability, quercetin has faced limitations in its application as a cosmetic composition despite its excellent efficacy.

[0037] In the examples, the hyaluronic acid complex may include a hyaluronic acid-based copolymer, for example, a block copolymer, a graft copolymer, a cross-linked copolymer, or a multi-block copolymer.

[0038] In the examples, the hyaluronic acid-based copolymer may include a hyaluronic acid block copolymer. For example, a block copolymer refers to a structure in which hyaluronic acid or a hyaluronic acid derivative exists as one segment and is combined with another polymer block. For example, it may include a hyaluronic acid-polyethylene glycol (PEG) block copolymer and a hyaluronic acid-polyisopropylacrylamide (PIPAAm) block copolymer.

[0039] In the examples, the hyaluronic acid-based copolymer may include a hyaluronic acid graft copolymer. For example, a graft copolymer refers to a structure in which another polymer is branched to a polymer chain of hyaluronic acid. Specifically, it may represent a structure in which polyacrylamide (PAA) or polyvinyl alcohol (PVA) is bonded to a hyaluronic acid backbone.

[0040] In the examples, the hyaluronic acid-based copolymer may include a cross-linked copolymer. The cross-linked copolymer is a structure in which hyaluronic acid and another polymer form a network through cross-linking, and includes a three-dimensional gel network form. For example, it may include a hyaluronic acid-polyvinylpyrrolidone (PVP) crosslinked copolymer.

[0041] In the examples, the hyaluronic acid-based copolymer may include a multi-block copolymer. The multi-block copolymer is a structure in which hyaluronic acid and two or more polymers are sequentially arranged, and specific physical properties can be expressed through interactions between each block. For example, it may include a hyaluronic acid-PEG-PIPAAm multi-block copolymer.

[0042] In the examples, the hyaluronic acid-based copolymer may include a hyaluronic acid / polyisopropylacrylamide copolymer. The hyaluronic acid / polyisopropylacrylamide copolymer is a graft copolymer obtained by binding hyaluronic acid to an amine-terminated isopropylacrylamide copolymer.

[0043] In the examples, quercetin may be included in an amount of 0.001 wt% or more, 0.005 wt% or more, 0.01 wt% or more, or 0.05 wt% or more, or 0.35 wt% or less, 0.34 wt% or less, 0.33 wt% or less, 0.32 wt% or less, 0.31 wt% or less, or 0.3 wt% or less, based on the total weight of the cosmetic composition. If quercetin is included in an amount less than 0.001 wt% outside the above range, the synergistic effect of UV protection when used in combination with a sunscreen may be negligible, and if quercetin is included in an amount exceeding 0.35 wt%, the formulation of the cosmetic composition may be unstable, resulting in a decrease in viscosity or separation of the formulation.

[0044] In the examples, the hyaluronic acid complex may be included in an amount of 0.00005 wt% or more, 0.000055 wt% or more, 0.00006 wt% or more, 0.000065 wt% or more, 0.00007 wt% or more, 0.000075 wt% or more, or 0.0006 wt% or less, 0.00055 wt% or less, 0.0005 wt% or less, or 0.00045 wt% or less, based on the total weight of the cosmetic composition.

[0045] In the examples, the hyaluronic acid complex may stabilize quercetin. When quercetin is stabilized by the hyaluronic acid complex, the UV blocking effect of quercetin may be further enhanced. In addition, when quercetin is used in combination with a sunscreen ingredient, the UV blocking effect may be further increased.

[0046] In the examples, the cosmetic composition may have improved formulation stability.

[0047] In the examples, the cosmetic composition may further include a sunscreen. The sunscreen may include one or more selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyltrizine, diethylaminohydroxybenzoylhexyl benzoate, methylenebis-benzotriazolyltetramethylbutylphenol, ethylhexyl triazone, polysilicon-15, or drometrizole trisiloxane.

[0048] In the examples, the sunscreen may be included in an amount of 3 to 12 weight percent based on the total weight of the cosmetic composition. Specifically, the sunscreen may be included in an amount of 3 weight percent or more, 3.5 weight percent or more, or 4 weight percent or more, or 12 weight percent or less, 11 weight percent or less, or 10 weight percent or less based on the total weight of the cosmetic composition.

[0049] In the examples, the cosmetic composition may have an SPF value of 55 or higher. For example, the SPF value of the cosmetic composition may be 55 or higher, 60 or higher, 65 or higher, or 70 or higher.

[0050] In the example, when quercetin is stabilized by a hyaluronic acid complex, the SPF value may be increased to 30% or more, 35% or more, 40% or more, 45% or more, or 50% or more, or to 100% or less, 95% or less, 90% or less, 85% or less, 80% or less, or 75% or less, compared to a cosmetic composition containing only quercetin.

[0051] In the examples, the cosmetic composition may further include an emulsifier. The emulsifier may include one or more selected from the group consisting of cetearyl oliveate / sorbitan oliveate, potassium cetyl phosphate, polyglyceryl-3 distearate, or polyglyceryl-3 methylglucose distearate.

[0052] In the examples, the emulsifier may be included in an amount of 0.5 to 5 weight% based on the total weight of the cosmetic composition. Specifically, the emulsifier may be included in an amount of 0.5 weight% or more, 0.7 weight% or more, 0.9 weight% or more, 1.1 weight% or more, 1.3 weight% or more, or 1.5 weight% or more based on the total weight of the cosmetic composition, or 5 weight% or less, 4.5 weight% or less, 4 weight% or less, 3.5 weight%, or 3 weight% or less.

[0053] In the examples, the cosmetic composition may further include a thickening agent. The thickening agent may include one or more selected from the group consisting of ammonium acryloyldimethyltaurate / VP copolymer, carbomer, or acrylate / C10-30 alkyl acrylate crosspolymer.

[0054] In the examples, the thickener may be included in an amount of 0.3 to 1.5 weight% based on the total weight of the cosmetic composition. Specifically, the thickener may be included in an amount of 0.3 weight% or more, 0.31 weight% or more, 0.32 weight% or more, 0.33 weight% or more, 0.34 weight% or more, 0.35 weight% or more, or 0.36 weight% or more based on the total weight of the cosmetic composition, or 1.5 weight% or less, 1.4 weight% or less, 1.3 weight% or less, 1.2 weight% or less, 1.1 weight% or less, 1 weight% or less, or 0.9 weight% or less based on the total weight of the cosmetic composition.

[0056] In the examples, the cosmetic composition may further include additives commonly used in the art within a range that does not impair the effects of the examples of the present application. For example, the cosmetic composition may further include pH adjusters, surfactants, stabilizers, preservatives, antiseptics, disinfectants, moisturizers, sunscreens, skin conditioning agents, whitening agents, coloring agents, organic pigments, inorganic pigments, fragrances, vitamins, natural colorants, pearls, and other functional ingredients. Here, the functional ingredients may include, for example, wrinkle-improving ingredients, whitening ingredients, antioxidant ingredients, anti-aging ingredients, plumping ingredients, exfoliating ingredients, scrub ingredients, moisturizing ingredients, skin barrier strengthening ingredients, skin elasticity-enhancing ingredients, etc. The amount of the above ingredients can be easily selected by a person skilled in the art within a range that does not impair the purpose and effects of the present application.

[0057] In the examples, the cosmetic composition can be manufactured into various products. For example, it can be manufactured into sun care products such as sun cream, sun stick, sun milk, sun lotion, and sun cushion. For example, it can be manufactured into functional cosmetics such as nourishing cream, essence, and ampoule, or into basic cosmetics such as toner and lotion. In addition, it can be manufactured into color cosmetics such as lipstick, lip balm, mascara, blush, shading, highlighter, makeup base, foundation, compact powder, concealer, and skin cover. Furthermore, it can be manufactured into products that are attached to the skin, such as packs and hydrogel slimming patches, or products that are sprayed onto the skin, such as mist and aerosol.

[0059] The present invention will be explained below through manufacturing examples and experimental examples, but the scope of the present invention is not limited by the contents presented below.

[0061] Preparation of Examples and Comparative Examples

[0063] Examples 1 to 7: Cosmetic compositions comprising a quercetin and hyaluronic acid complex

[0065] A cosmetic composition containing a quercetin and hyaluronic acid complex was prepared as shown in Tables 1 and 2.

[0066] Specifically, an oil phase was prepared by mixing and stirring a sunscreen agent and an emulsifier at 80°C. A quercetin and hyaluronic acid complex was mixed and added to the oil phase. A water phase was prepared by dispersing a thickening agent in purified water at 80°C. An emulsion was formed by slowly adding the oil phase to the water phase while stirring. In the case where the quercetin and hyaluronic acid complex was not added to the oil phase, the mixture was cooled to 45°C, and then the quercetin and hyaluronic acid complex was mixed.

[0068] division Example 1 Example 2 Example 3 Example 4 Quercetin 0.05 0.1 0.2 0.3 Hyaluronic acid / polyisopropylacrylamide copolymer 0.000075 0.00015 0.0003 0.00045 purified water to 100 to 100 to 100 to 100 sunscreen Bis-ethylhexyloxyphenol methoxyphenyl triazine 2.0 2.0 2.0 2.0 Diethylaminohydroxybenzoylhexylbenzoate 2.0 2.0 2.0 2.0 Ethylhexyl triazone 2.0 2.0 2.0 2.0 emulsifier Cetearyl Oliveate / Sorbitan Oliveate 0.5 0.5 0.5 0.5 Potassium cetyl phosphate 0.1 0.1 0.1 0.1 Polyglyceryl-3 distearate 1.5 1.5 1.5 1.5 Polyglyceryl-3-methylglucose distearate 0.5 0.5 0.5 0.5 Thickener Ammonium Acryloyl Dimethyl Taurate / VP Copolymer 0.12 0.12 0.12 0.12 Carbomer 0.18 0.18 0.18 0.18 Acrylate / C10-30 alkyl acrylate crosspolymer 0.06 0.06 0.06 0.06

[0070] division Example 5 Example 6 Example 7 Quercetin 0.1 0.1 0.1 Hyaluronic acid / polyisopropylacrylamide copolymer 0.000075 0.0003 0.00045 purified water to 100 to 100 to 100 sunscreen Bis-ethylhexyloxyphenol methoxyphenyl triazine 2.0 2.0 2.0 Diethylaminohydroxybenzoylhexylbenzoate 2.0 2.0 2.0 Ethylhexyl triazone 2.0 2.0 2.0 emulsifier Cetearyl Oliveate / Sorbitan Oliveate 0.5 0.5 0.5 Potassium cetyl phosphate 0.1 0.1 0.1 Polyglyceryl-3 distearate 1.5 1.5 1.5 Polyglyceryl-3-methylglucose distearate 0.5 0.5 0.5 Thickener Ammonium Acryloyl Dimethyl Taurate / VP Copolymer 0.12 0.12 0.12 Carbomer 0.18 0.18 0.18 Acrylate / C10-30 alkyl acrylate crosspolymer 0.06 0.06 0.06

[0072] Comparative Examples 1 to 4: Cosmetic compositions comprising one or an excess of a quercetin or hyaluronic acid complex.

[0074] As shown in Table 3, a cosmetic composition containing one of quercetin or hyaluronic acid complexes or containing an excess of these was prepared in the same manner as in the example.

[0076] division Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Quercetin 0.1 0 0.4 0.1 Hyaluronic acid / polyisopropylacrylamide copolymer 0 0.00015 0.00045 0.00065 purified water to 100 to 100 to 100 to 100 sunscreen Bis-ethylhexyloxyphenol methoxyphenyl triazine 2.0 2.0 2.0 2.0 Diethylaminohydroxybenzoylhexylbenzoate 2.0 2.0 2.0 2.0 Ethylhexyl triazone 2.0 2.0 2.0 2.0 emulsifier Cetearyl Oliveate / Sorbitan Oliveate 0.5 0.5 0.5 0.5 Potassium cetyl phosphate 0.1 0.1 0.1 0.1 Polyglyceryl-3 distearate 1.5 1.5 1.5 1.5 Polyglyceryl-3-methylglucose distearate 0.5 0.5 0.5 0.5 Thickener Ammonium Acryloyl Dimethyl Taurate / VP Copolymer 0.12 0.12 0.12 0.12 Carbomer 0.18 0.18 0.18 0.18 Acrylate / C10-30 alkyl acrylate crosspolymer 0.06 0.06 0.06 0.06

[0078] Comparative Examples 5 to 7: Cosmetic compositions comprising quercetin and hyaluronic acid

[0080] As shown in Table 4, a cosmetic composition containing quercetin and hyaluronic acid was prepared in the same manner as in the example.

[0082] division Comparative Example 5 Comparative Example 6 Comparative Example 7 Quercetin 0.1 0.1 0.1 Hyaluronic acid 0.00015 0.0003 0.00045 purified water to 100 to 100 to 100 sunscreen Bis-ethylhexyloxyphenol methoxyphenyl triazine 2.0 2.0 2.0 Diethylaminohydroxybenzoylhexylbenzoate 2.0 2.0 2.0 Ethylhexyl triazone 2.0 2.0 2.0 emulsifier Cetearyl Oliveate / Sorbitan Oliveate 0.5 0.5 0.5 Potassium cetyl phosphate 0.1 0.1 0.1 Polyglyceryl-3 distearate 1.5 1.5 1.5 Polyglyceryl-3-methylglucose distearate 0.5 0.5 0.5 Thickener Ammonium Acryloyl Dimethyl Taurate / VP Copolymer 0.12 0.12 0.12 Carbomer 0.18 0.18 0.18 Acrylate / C10-30 alkyl acrylate crosspolymer 0.06 0.06 0.06

[0084] Experimental Example

[0086] Experimental Example 1: Measurement of SPF Value of Cosmetic Composition

[0088] The in vitro SPF measurement method was used to evaluate the UV protection efficacy of the cosmetic composition. The test composition was uniformly applied to the surface of a PMMA plate at a density of 2.0 mg / cm², dried at room temperature for 15 minutes, and then stabilized for an additional 15 minutes under skin-like conditions (32±2℃, 50±10% RH). Subsequently, absorbance was measured at 5 nm intervals in the range of 290–400 nm using a UV spectrophotometer, and the average value was used after repeating measurements three times at each wavelength. The SPF value was calculated using the Mansur equation based on the measured absorbance data. As a control, a cosmetic composition that did not contain either quercetin or hyaluronic acid / polyisopropylacrylamide copolymer was used. The experimental results are shown in Table 5.

[0090] division SPF value control group 50 Example 1 70 Example 2 91 Example 3 100 Example 4 107 Example 5 79 Example 6 85 Example 7 81 Comparative Example 1 52 Comparative Example 2 50 Comparative Example 3 65 Comparative Example 4 52 Comparative Example 5 50 Comparative Example 6 51 Comparative Example 7 51

[0092] The control group, which does not contain either quercetin or hyaluronic acid / polyisopropylacrylamide copolymer, was found to have an SPF of 50.

[0093] Comparative Example 1, containing only quercetin, and Comparative Example 4, containing an excess amount of hyaluronic acid / polyisopropylacrylamide copolymer, were confirmed to have an SPF value of 52, confirming a UV protection effect similar to the control group. Comparative Example 2, containing only hyaluronic acid / polyisopropylacrylamide copolymer, was confirmed to have no UV protection effect.

[0094] In addition, Comparative Examples 5 to 7 containing hyaluronic acid showed an SPF value of 50 or 51.

[0095] Examples 1 to 7, containing quercetin and hyaluronic acid / polyisopropylacrylamide copolymer, showed an improved SPF value of 70 or higher. This was determined to be because the quercetin was effectively stabilized by the hyaluronic acid / polyisopropylacrylamide copolymer, thereby increasing the UV blocking effect of quercetin. Additionally, it was found that the UV blocking effect was further enhanced when quercetin was used in combination with a sunscreen.

[0097] Experimental Example 2: Analysis of Formulation Stability of Cosmetic Composition

[0099] After storing the cosmetic composition at 45°C for one month, the formulation stability was evaluated by visually observing its appearance. As a control, a cosmetic composition that did not contain either quercetin or hyaluronic acid / polyisopropylacrylamide copolymer was used. The experimental results are shown in Table 6 and Figure 1.

[0101] division Formulation stability control group No change Example 1 No change Example 2 No change Example 3 No change Example 4 No change Example 5 No change Example 6 No change Example 7 No change Comparative Example 1 Discoloration and separation of properties Comparative Example 2 No change Comparative Example 3 discoloration Comparative Example 4 No change Comparative Example 5 Discoloration and separation of properties Comparative Example 6 Discoloration and separation of properties Comparative Example 7 Discoloration and separation of properties

[0103] Examples containing appropriate amounts of quercetin and hyaluronic acid / polyisopropylacrylamide copolymer were evaluated as having excellent formulation stability, as there was no change in the formulation.

[0104] In contrast, discoloration was observed in Comparative Example 1 containing only quercetin, Comparative Example 3 containing an excess amount of quercetin, and Comparative Examples 5 to 7 containing hyaluronic acid, and there was a problem with the formulation separating in Comparative Example 1 and Comparative Examples 5 to 7.

[0106] Foregoing, specific parts of the contents of this application have been described in detail. It will be apparent to those skilled in the art that such specific descriptions are merely preferred embodiments and do not limit the scope of this application. Accordingly, the actual scope of this application is defined by the appended claims and their equivalents.

Claims

Claim 1 A cosmetic composition comprising a quercetin and a hyaluronic acid complex, wherein the hyaluronic acid complex comprises a hyaluronic acid / polyisopropylacrylamide copolymer, wherein the quercetin comprises 0.05 to 0.3 weight% based on the total weight of the cosmetic composition, and the hyaluronic acid complex comprises 0.000075 to 0.00045 weight% based on the total weight of the cosmetic composition. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A cosmetic composition according to claim 1, wherein the hyaluronic acid complex stabilizes the quercetin. Claim 7 In claim 1, the cosmetic composition is a cosmetic composition having improved formulation stability. Claim 8 In claim 1, the cosmetic composition further comprises a sunscreen agent. Claim 9 A cosmetic composition according to claim 8, wherein the sunscreen comprises one or more selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylaminohydroxybenzoylhexyl benzoate, methylenebis-benzotriazolyltetramethylbutylphenol, ethylhexyl triazone, polysilicon-15, or drometrizole trisiloxane. Claim 10 In claim 1, the cosmetic composition is a cosmetic composition having an SPF value of 55 or higher.

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