Transparent cosmetic composition for UV protection containing capsules

Abstract

According to an embodiment of the present application, a cosmetic composition for UV protection is provided. The cosmetic composition comprises: an aqueous phase comprising a first UV-blocking agent; and an oil phase comprising a second UV-blocking agent and an oil gelling agent, wherein the oil phase is encapsulated and dispersed in the aqueous phase, and the oil gelling agent may comprise polyamide-3. According to embodiments of the present application, due to the use of an oil gelling agent, the oil phase can be encapsulated and dispersed in the aqueous phase. By using polyamide-3 as the oil gelling agent, the cosmetic composition can provide a transparent formulation and exhibit excellent formulation stability, feeling of use, and UV protection efficacy.

Description

Transparent sunscreen cosmetic composition containing capsules

[0001] The present application relates to a cosmetic composition for blocking ultraviolet rays.

[0002] Skin damage caused by ultraviolet rays is emerging as a significant health issue. Ultraviolet rays are primarily divided into ultraviolet A (UVA) and ultraviolet B (UVB), both of which can have various harmful effects on the skin. UVA penetrates deep into the skin's layers and can cause long-term damage such as aging, wrinkles, and pigmentation, while UVB primarily affects the skin's surface and can lead to acute damage such as sunburn, erythema, and skin cancer.

[0003] The use of sunscreen is becoming increasingly important to minimize the harmful effects of ultraviolet rays. Sunscreen functions to protect the skin by absorbing or reflecting UV rays. While a wide variety of sunscreens exist on the market, there is a steadily increasing demand for products that maximize UV ​​protection while minimizing skin irritation and providing a pleasant user experience.

[0004] In this regard, capsule-formulated sunscreens have been developed to improve the user experience of sunscreens. However, in the case of capsule-formulated sunscreens, using general encapsulating materials resulted in a decrease in the content of the sunscreen ingredient during the encapsulation process, leading to insufficient efficacy; conversely, changing the encapsulating material resulted in a significant decline in formulation transparency and user experience.

[0005] The purpose of this application is to provide a cosmetic composition for blocking ultraviolet rays.

[0006] According to an embodiment of the present application, a cosmetic composition for blocking ultraviolet rays is provided. The cosmetic composition comprises an aqueous phase containing a first ultraviolet ray blocker; and an oil phase containing a second ultraviolet ray blocker and an oil gelling agent; wherein the oil phase is encapsulated and dispersed in the aqueous phase, and the oil gelling agent may include polyamide-3.

[0007] In addition, the polyamide-3 may be included in an amount of 5 to 20 weight percent based on the total weight of the oil phase.

[0008] In addition, the first sunscreen may include one or more of terephthalilyliden dicamphorsulfonic acid and phenylbenzimidazolesulfonic acid.

[0009] In addition, the second sunscreen may include one or more selected from the group consisting of ethylhexyl salicylate, homosalate, drometriazole, ethylhexyl triazone, ethylhexyl methoxycinnamate, diethylaminohydroxybenzoyl hexyl benzoate, and bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0010] In addition, the above aqueous phase may further include water, polyol, and a pH adjuster.

[0011] In addition, the water may be included in an amount of 60 to 70 weight percent based on the total weight of the composition.

[0012] In addition, the above aqueous phase further comprises a thickening agent, and the thickening agent may comprise one or more selected from the group consisting of carbomer, polyC10-30 alkyl acrylate, and hydroxypropylmethylcellulose stearoxyether.

[0013] In addition, the above oil phase may further include lauryl dimethicone / polyglycerin-3 crosspolymer.

[0014] In addition, the lauryl dimethicone / polyglycerin-3 crosspolymer may be included in an amount of 1 to 3 weight percent based on the total weight of the composition.

[0015] According to the embodiments of the present application, by using an oil gelling agent, the oil phase can be encapsulated and dispersed in the aqueous phase, and by using polyamide-3 as the oil gelling agent, a transparent formulation, excellent formulation stability and feel, and excellent UV protection efficacy can be exhibited.

[0016] In addition, according to the embodiments of the present application, the water phase and the oil phase each contain a UV blocker, and by using polyamide-3 as an oil gelling agent, the amount of UV blocker contained in the oil phase can be minimized to improve the user experience.

[0017] 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.

[0018] FIG. 1 is a formulation example of a cosmetic composition according to an embodiment of the present application.

[0019] 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.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains.

[0021] 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.

[0022] 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.

[0023] 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).

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Throughout this specification, values ​​expressed in the form of ranges should be interpreted in a flexible manner to include not only numeric values ​​explicitly mentioned as limits of such ranges, but also all individual numeric values ​​or sub-ranges included within such ranges, as if each individual numeric value and sub-range were explicitly mentioned. For example, a range of “about 0.1% to about 5%” or “about 0.1% to 5%” should be interpreted to include not only about 0.1% to about 5%, but also individual values ​​(e.g., 1%, 2%, 3%, and 4%) and sub-ranges (e.g., 0.1% to 0.5%, 1.1% to 2.2%, 3.3% to 4.4%) within the indicated range. Unless otherwise indicated, a reference to “about X to Y” has the same meaning as “about X to about Y.” Likewise, unless otherwise indicated, a reference to “about X, Y, or about Z” has the same meaning as “about X, about Y, or about Z.”

[0028] The terms “about” or “approximately” as used herein mean that dimensions, sizes, formulations, parameters, shapes, and other quantities and characteristics may not be precise and may be approximate and / or larger or smaller by reflecting, as necessary, tolerances, conversion factors, rounding, measurement errors, and other factors known to those skilled in the art. The terms “about” or “approximately” apply to the dimensions, sizes, formulations, parameters, shapes, or other quantities or characteristics described herein, generally, regardless of whether they are explicitly mentioned. The term “about” as used herein may allow for a degree of variability in a given value or range, for example, within 10%, within 5%, or within 1% of the stated value or stated range limit, and includes the stated precise value or range.

[0029] Where a method for measuring or evaluating specific dimensions, sizes, formulations, parameters, shapes, and other quantities and characteristics is not described in this specification, a person skilled in the art may readily recognize a previously known method for measuring or evaluating, or may readily derive such method by referring to prior art known prior to the filing date of this specification.

[0030] As used herein, the term “substantially” refers to a majority or most, such as at least about 50%, 60%, 70%, 80%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.9%, 99.99%, or at least about 99.999% or more, or 100%. As used herein, the term “substantially absent” may mean having nothing, or having a negligible amount of a material present such that the amount of the material does not affect the substantial properties of the composition containing the material. At this time, a small amount is an amount of material in the composition of about 0% to about 5% by weight, or about 0% to about 1% by weight, or about 5% or less by weight, or about 4.5% or less by weight, or about 4, 3.5, 3, 2.5, 2, 1.5, 1, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.01, or 0.001% by weight or less.

[0031] As used in this specification, the term “generally” means 50% or more, 60% or more, 70% or more, 80% or more, or 90% or more.

[0032] 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.

[0033] In this specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other components in between. Furthermore, when a part is described as including a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0034] Furthermore, in this application, the term “or” is intended to mean an implied “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 implied 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.

[0035]

[0036] According to an embodiment of the present application, a cosmetic composition for sunscreen is provided. The cosmetic composition for sunscreen may include a water phase and an oil phase. The water phase and the oil phase may be mixed with each other. For example, the oil phase may be emulsified in the form of oil-in-water in which the oil phase is dispersed in the water phase, or the water phase may be emulsified in the form of water-in-oil in which the water phase is dispersed in the oil phase, but is not limited thereto.

[0037] In the examples, the aqueous phase may include a first sunscreen agent. For example, the first sunscreen agent may be an aqueous sunscreen agent that is soluble in water.

[0038] In the examples, the first sunscreen may include one or more of terephthalilylidendicampersulfonic acid and phenylbenzimidazolesulfonic acid. For example, the first sunscreen may include terephthalilylidendicampersulfonic acid and phenylbenzimidazolesulfonic acid.

[0039] In the examples, the first sunscreen agent may be included in an amount of 2 to 13 weight% based on the total weight of the composition. For example, the first sunscreen agent may be included in an amount of 5 to 13 weight% based on the total weight of the composition. For example, the first sunscreen agent may be included in an amount of 2 weight% or more, 3 weight% or more, 4 weight% or more, 5 weight% or more, 6 weight% or more, 7 weight% or more, or 8 weight% or more based on the total weight of the composition. For example, the first sunscreen agent may be included in an amount of 13 weight% or less, 12 weight% or less, 11 weight% or less, or 10 weight% or less based on the total weight of the composition. If the first sunscreen agent is included in an amount less than the above amount, the UV protection efficacy may be insufficient, and if the sunscreen agent is added to the oil phase to resolve this, stickiness may increase, leading to a decrease in usability. If the first sunscreen agent is included in an amount exceeding the above amount, stickiness may increase, leading to a decrease in usability.

[0040] In the examples, the aqueous phase may comprise at least one of water, a polyol, and a pH adjuster. For example, the aqueous phase may comprise water, a polyol, and a pH adjuster.

[0041] In the examples, water may be included in an amount of 60 to 70 weight% based on the total weight of the composition. For example, water may be included in an amount of 60 weight% or more, 61 weight% or more, 62 weight% or more, 63 weight% or more, or 64 weight% or more based on the total weight of the composition. For example, water may be included in an amount of 70 weight% or less, 69 weight% or less, 68 weight% or less, 67 weight% or less, 66 weight% or less, or 65 weight% or less based on the total weight of the composition. Within the above content ranges, miscibility with the oil phase, overall usability, etc., can be optimized.

[0042] In the examples, the content of the remaining water, excluding the water used to dissolve the substance contained in the aqueous phase, may be 36 to 42 weight percent with respect to the total weight of the composition. For example, the content of the remaining water, excluding the water used to dissolve the substance contained in the aqueous phase, may be 36 weight percent or more, 36.5 weight percent or more, 37 weight percent or more, or 37.5 weight percent or more with respect to the total weight of the composition. For example, the content of the remaining water, excluding the water used to dissolve the substance contained in the aqueous phase, may be 42 weight percent or less, 41.5 weight percent or less, 41 weight percent or less, 40.5 weight percent or less, or 40 weight percent or less with respect to the total weight of the composition. Within the above content ranges, miscibility with the oil phase, overall usability, etc., can be optimized.

[0043] In the examples, the polyol and pH adjuster may each be included in an amount of 1 to 20 weight% and 1 to 5 weight%, respectively, based on the total weight of the composition. However, this is not limited thereto, and the content of the polyol and pH adjuster may be appropriately adjusted within a range that does not impair the effects of the examples of the present application.

[0044] In the examples, the aqueous phase may further include a thickening agent. The thickening agent can control the viscosity of the cosmetic composition for UV protection.

[0045] In the examples, the thickening agent may comprise one or more selected from the group consisting of carbomer, polyC10-30 alkyl acrylate, and hydroxypropylmethylcellulose stearoxyether. For example, the thickening agent may be provided in a dissolved state in water.

[0046] In the examples, the oil phase may be encapsulated and dispersed in the aqueous phase. In this specification, “encapsulation” and “dispersion” have the same meaning as known in the art related to cosmetics. For example, a cosmetic composition for sunscreen may have a form in which the oil phase is encapsulated in microcapsules of a size of 1 to 1,000 μm and the microcapsules are entirely dispersed in the aqueous phase.

[0047] In the examples, the oil phase may include an oil gelling agent. The oil phase may be encapsulated by the oil gelling agent and dispersed in the aqueous phase.

[0048] In the examples, the oil gelling agent may be polyamide-3. In this application, by using polyamide-3 as the oil gelling agent, a transparent formulation can be achieved, while simultaneously exhibiting excellent formulation stability, usability, and excellent UV protection efficacy. Additionally, in this application, a UV blocker is included in both the aqueous and oil phases, but by using polyamide-3 as the oil gelling agent, the content of the UV blocker in the oil phase can be minimized to improve usability.

[0049] In the examples, polyamide-3 may be included in an amount of 5 to 20 weight% based on the total weight of the oil phase. For example, polyamide-3 may be included in an amount of 5 weight% or more, 10 weight% or more, or 15 weight% or more based on the total weight of the oil phase. For example, polyamide-3 may be included in an amount of 20 weight% or less, 15 weight% or less, or 10 weight% or less based on the total weight of the oil phase. If polyamide-3 is included in an amount less than the above amount, the hardness of the oil phase decreases, making it difficult to encapsulate, or the capsule may be formed too small. Additionally, if polyamide-3 is included in an amount exceeding the above amount, the hardness increases excessively, causing the capsule to be manufactured non-uniformly, or a foreign body sensation may be felt when applied to the skin, resulting in reduced usability.

[0050] In the examples, polyamide-3 may be included in an amount of 1 to 4 weight% based on the total weight of the composition. For example, polyamide-3 may be included in an amount of 1 weight% or more, 1.1 weight% or more, 1.2 weight% or more, 1.3 weight% or more, or 1.4 weight% or more based on the total weight of the composition. For example, polyamide-3 may be included in an amount of 4 weight% or less, 3.5 weight% or less, 3 weight% or less, 2.5 weight% or less, 2 weight% or less, 1.9 weight% or less, 1.8 weight% or less, 1.7 weight% or less, or 1.6 weight% or less based on the total weight of the composition. If polyamide-3 is included in an amount less than the above amounts, the hardness of the oil phase decreases, making it difficult to encapsulate, or the capsule may be formed too small. Additionally, if polyamide-3 is included in an amount exceeding the above amounts, the hardness increases excessively, causing the capsule to be manufactured non-uniformly, or a foreign body sensation may be felt when applied to the skin, resulting in reduced usability.

[0051] In the examples, the oil phase may include a second sunscreen. For example, the second sunscreen may be an oil-based sunscreen that is soluble in oil.

[0052] In the examples, the second sunscreen may include one or more selected from the group consisting of ethylhexyl salicylate, homosalate, drometriazole, ethylhexyl triazone, ethylhexyl methoxycinnamate, diethylaminohydroxybenzoyl hexyl benzoate, and bis-ethylhexyloxyphenol methoxyphenyl triazine. For example, the second sunscreen may be one or more selected from the group consisting of ethylhexyl salicylate, homosalate, drometriazole, ethylhexyl triazone, ethylhexyl methoxycinnamate, and diethylaminohydroxybenzoyl hexyl benzoate. For example, the second sunscreen may be one or more selected from the group consisting of ethylhexyl salicylate, homosalate, and drometriazole.

[0053] In the examples, the second sunscreen agent may be included in an amount of 9 to 20 weight% based on the total weight of the composition. For example, the second sunscreen agent may be included in an amount of 9 weight% or more, 10 weight% or more, 11 weight% or more, or 12 weight% or more based on the total weight of the composition. For example, the second sunscreen agent may be included in an amount of 20 weight% or less, 18 weight% or less, 16 weight% or less, 15 weight% or less, or 14 weight% or less based on the total weight of the composition. If the second sunscreen agent is included in an amount less than the above amount, the UV blocking efficacy may be reduced, and if the second sunscreen agent is included in an amount exceeding the above amount, stickiness may increase, thereby reducing the user experience.

[0054] In the examples, the oil phase may include a skin conditioning agent. The skin conditioning agent can improve the overall feel of the UV-blocking cosmetic composition.

[0055] In the examples, the skin conditioning agent may include lauryl dimethicone / polyglycerin-3 crosspolymer. That is, the oil phase may include lauryl dimethicone / polyglycerin-3 crosspolymer. When lauryl dimethicone / polyglycerin-3 crosspolymer is included, the stickiness and glossiness of the UV-blocking cosmetic composition are reduced, and the user experience can be significantly improved.

[0056] In the examples, the lauryl dimethicone / polyglycerin-3 crosspolymer may be included in an amount of 1 to 3 weight% based on the total weight of the composition. For example, the lauryl dimethicone / polyglycerin-3 crosspolymer may be included in an amount of 1 weight% or more, 1.2 weight% or more, 1.4 weight% or more, 1.6 weight% or more, or 1.8 weight% or more based on the total weight of the composition. For example, the lauryl dimethicone / polyglycerin-3 crosspolymer may be included in an amount of 3 weight% or less, 2.8 weight% or less, 2.6 weight% or less, 2.4 weight% or less, or 2.2 weight% or less based on the total weight of the composition. The effect of improving usability can be optimized within the above content ranges.

[0057] In the examples, the skin conditioning agent may further include a skin conditioning agent in addition to lauryl dimethicone / polyglycerin-3 crosspolymer. For example, the skin conditioning agent may include dibutyl adipate.

[0058] In the examples, the weight ratio of the first sunscreen agent and the second sunscreen agent may be 1:0.8 to 4. In this specification, “weight ratio of A and B” means “A:B”. For example, the weight ratio of the first sunscreen agent and the second sunscreen agent may be 1:0.8 or more, 1:0.9 or more, 1:1.0 or more, 1:1.1 or more, 1:1.2 or more, 1:1.3 or more, or 1:1.4 or more. For example, the weight ratio of the first sunscreen agent and the second sunscreen agent may be 1:4 or less, 1:3 or less, 1:2.5 or less, 1:2 or less, 1:1.8 or less, 1:1.6 or less, or 1:1.5 or less. If the weight ratio of the first UV blocker and the second UV blocker is below the above range, the UV blocking efficacy may be reduced, or the hardness of the oil phase may decrease, making encapsulation difficult or resulting in a lack of usability. If the weight ratio of the first UV blocker and the second UV blocker exceeds the above range, the UV blocking efficacy may be reduced, or the hardness of the oil phase may become excessively high, resulting in uneven capsule formation or a lack of usability.

[0059] 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 thickeners, 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.

[0060] In the examples, the cosmetic composition may be provided in formulations commonly manufactured in the art. For example, the cosmetic composition may be formulated into an oil-dispersed formulation in which a powder complex is dispersed in an oil phase, a water-dispersed formulation in which a powder complex is dispersed in an aqueous phase, an emulsion formulation of the type of oil in water (O / W), water in oil (W / O), oil in water in water (W / O / W), and oil in water in oil (O / W / O), a solubilized formulation, etc. However, it is not limited thereto, and the cosmetic composition may also be provided in formulations such as a solution, suspension, emulsion, solid, gel, oil, powder, paste, or foam aerosol.

[0061] 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 soap, cleanser, cleansing cream, cleansing water, etc., or into color cosmetics such as lipstick, lip balm, mascara, blush, shading, highlighter, makeup base, foundation, compact powder, concealer, skin cover, etc. Furthermore, it can be manufactured into hair cleansing products such as shampoo, rinse, hair conditioner, hair gel, etc. Additionally, 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.

[0062] In the examples, the composition may be a topical skin composition. For example, the topical skin composition may have a formulation such as a solution, oil, paste, cream, gel, patch, spray, etc.

[0063] In the examples, the skin topical composition may appropriately incorporate ingredients commonly used in skin topical preparations such as cosmetics or pharmaceuticals, for example, aqueous ingredients, oily ingredients, powder ingredients, alcohols, moisturizers, thickeners, sunscreens, whitening agents, preservatives, antioxidants, surfactants, fragrances, colorants, fatty substances, solvents, thickeners, gelling agents, emollients, foaming agents, fragrances, metal ion chelating agents, chelating agents, vitamins, various skin nutrients, or combinations thereof as needed. 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 effect of the present application.

[0064] In the example, the penetration hardness of the oil phase when penetrated at a speed of 30 cm / min using a 3 mm needle may be 15 to 60 mm. For example, the penetration hardness of the oil phase may be 15 mm or more, 20 mm or more, or 30 mm or more. For example, the penetration hardness of the oil phase may be 60 mm or less, 55 mm or less, 50 mm or less, 45 mm or less, 40 mm or less, or 35 mm or less.

[0065] In the examples, the UV-blocking composition may have an in-vitro SPF of 61 or higher. For example, the UV-blocking composition may have an in-vitro SPF of 80 or lower. For example, the UV-blocking composition may have an in-vitro SPF of 61 or higher, 62 or higher, or 63 or higher. For example, the UV-blocking composition may have an in-vitro SPF of 80 or lower, 70 or lower, or 65 or lower.

[0066] In the examples, the UV-blocking composition may have an in-vitro PFA content of 17 or more. For example, the UV-blocking composition may have an in-vitro PFA content of 30 or less. For example, the UV-blocking composition may have an in-vitro PFA content of 17 or more or 18 or more. For example, the UV-blocking composition may have an in-vitro PFA content of 30 or less or 20 or less.

[0067] In the examples, the UV-blocking composition may have a relative value of the in-vitro SPF value after immersion relative to the in-vitro SPF value before immersion of 65% or more. For example, the UV-blocking composition may have a relative value of the in-vitro SPF value after immersion relative to the in-vitro SPF value before immersion of 90% or less. For example, the UV-blocking composition may have a relative value of the in-vitro SPF value after immersion relative to the in-vitro SPF value before immersion of 65% or more, 70% or more, 75% or more, or 80% or more. For example, the UV-blocking composition may have a relative value of the in-vitro SPF value after immersion relative to the in-vitro SPF value before immersion of 90% or less, 85% or less, or 80% or less.

[0068]

[0069] 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.

[0070]

[0071] Preparation Example

[0072]

[0073] (1) Preparation Example 1: Preparation of Example 1 and Comparative Examples 1 to 4

[0074] The oil phase components listed in Table 1 were mixed and heated and melted using an Agimixer at a temperature of 100 to 180°C. Next, the aqueous phase components listed in Table 1 were mixed and mixed using an Agimixer, then heated and melted at a temperature of 70°C. The prepared oil phase was mixed into the aqueous phase at 70°C and then evenly dispersed using an Agimixer. Next, the mixture was continuously stirred and cooled to 30°C to prepare the cosmetic compositions of Example 1 and Comparative Examples 1 to 4. Specifically, Comparative Examples 1 to 4 are comparative examples in which a different oil gelling agent was used instead of polyamide-3.

[0075] The unit of the content in Table 1 is weight%. In addition, in Table 1, purified water*terephthalilylidendicampersulfonic acid (33%) refers to a solution in which terephthalilylidendicampersulfonic acid is dissolved in purified water at 33% by weight, carbomer (purified water 2% sol) refers to a solution in which carbomer is dissolved in purified water at 2% by weight, polyC10-30 alkyl acrylate (purified water 2% sol) refers to a solution in which polyC10-30 alkyl acrylate is dissolved in purified water at 2% by weight, and lauryl dimethicone / polyglycerin-3 crosspolymer 20% refers to a solution in which lauryl dimethicone / polyglycerin-3 crosspolymer is dissolved in a carrier oil at 20% by weight. In this case, triethylhexanoin was used as the carrier oil.

[0076]

[0077] Classification Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Aqueous Water Purified Water 39.45 39.45 39.45 39.45 39.45 Polyol 10.05 10.05 10.05 10.05 10.05 pH Adjuster 3.80 3.80 3.80 3.80 3.80 UV Blocker Purified Water* Terephthalilyliden dicamphorsulfonic acid (33%) 6.00 6.00 6.00 6.00 6.00 Phenylbenzimidazole sulfonic acid 3.00 3.00 3.00 3.00 3.00 Subtotal 9.00 9.00 9.00 9.00 9.00 Thickening Agent Carbomer (Purified Water 2% sol)15.0015.0015.0015.0015.00 Poly C10-30 Alkyl Acrylate (Purified Water 2% sol)6.006.006.006.006.00 Hydroxypropyl Methylcellulose Stearoxyether 0.200.200.200.200.20 Subtotal 83.5083.5083.5083.50 Oil Phase Sunscreen Ethylhexyl Salicylate 4.004.004.004.004.00 Homosalate 7.007.007.007.007.00 Drometriazole 2.002.002.002.002.00 Subtotal 13.0013.0013.0013.0013.00 Oil Gelling Agent Polyamide-3 1.50----Dibutyl ethylhexanoyl glutamide-1.50---Dibutyl lauroyl glutamide--1.50--Polyamide-8----1.50C30-45 Alkyl dimethylsilyl polypropyl silsesquioxane---1.50 Skin Conditioning Agent Lauryl dimethicone / Polyglycerin-3 Crosspolymer 20% 2.00 2.00 2.00 2.00 2.00 Subtotal 16.50 16.50 16.50 16.50 16.50 Total 100 100 100 100

[0078]

[0079] (2) Preparation Example 2: Preparation of Examples 2, 3 and Comparative Examples 5 to 7

[0080] Examples 2, 3 and Comparative Examples 5 to 7 were prepared using the same method as Preparation Example 1 as described in Table 2. Specifically, Examples 2, 3 and Comparative Examples 5 to 7 are examples and comparative examples in which the content of polyamide-3 was changed.

[0081] The unit of the content in Table 2 is weight %.

[0082]

[0083] Classification Example 1 Example 2 Example 3 Comparative Example 5 Comparative Example 6 Comparative Example 7 Aqueous Water Purified Water 39.45 39.95 37.95 36.45 40.45 34.95 Polyol 10.05 10.05 10.05 10.05 10.05 10.05 pH Adjuster 3.80 3.80 3.80 3.80 3.80 3.80 UV Protection Agent Purified Water* Terephthalylidene Dicamphor Sulfonic Acid (33%) 6.00 6.00 6.00 6.00 6.00 6.00 6.00 Phenylbenzimidazole Sulfonic Acid 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Subtotal 9.00 9.00 9.00 9.00 9.00 9.00 Thickening Agent Carbomer (Purified Water 2% sol)15.0015.0015.0015.0015.0015.0015.00 Poly C10-30 Alkyl Acrylate (Purified Water 2% sol) 6.00 6.00 6.00 6.00 6.00 6.00 Hydroxypropylmethylcellulose stearoxyether 0.20 0.20 0.20 0.20 0.20 0.20 Subtotal 83.50 84.00 82.00 80.50 84.50 79.00 Oil phase sunscreen Ethylhexyl salicylate 4.00 4.00 4.00 4.00 4.00 4.00 Homosalate 7.00 7.00 7.00 7.00 7.00 7.00 7.00 Drometriazole 2.00 2.00 2.00 2.00 2.00 2.00 Subtotal 13.00 13.00 13.00 13.00 13.00 13.00 13.00 Oil Gelling agent Polyamide-3 1.50 1.00 3.00 4.50 0.50 6.00 Skin conditioning agent Lauryl Dimethicone / Polyglycerin-3 Crosspolymer 20% 2.00 2.00 2.00 2.00 2.00 2.00 Subtotal 16.50 16.00 18.00 19.50 15.50 21.00 Total 100 100 100 100 100

[0084]

[0085] Experimental Example

[0086]

[0087] (1) Experimental Example 1: Evaluation of whether capsule formulation is formed

[0088] For each of Examples 1 to 3 and Comparative Examples 1 to 7, whether capsules were properly formed in the prepared cosmetic composition was observed visually, and the results are shown in Table 3. A photograph of the cosmetic composition according to Example 1 is shown in Figure 1 as a representative example.

[0089]

[0090] Classification Whether Capsule Formation Is Formed Example 10 Example 20 Example 30 Comparative Example 1X Comparative Example 2X Comparative Example 3X Comparative Example 40 Comparative Example 50 Comparative Example 60 Comparative Example 70

[0091]

[0092] As a result of the experiment, in Comparative Examples 1 to 3, in which equal amounts of dibutylethylhexanoylglutamide, dibutalauroylglutamide, and C30-45 alkyldimethylsilylpolypropylsilsesquioxane were included instead of polyamide-3, it was visually confirmed that capsules were not properly formed.

[0093] Below, experiments were conducted on Examples 1 to 3 and Comparative Examples 4 to 7 in which capsules were properly formed.

[0094]

[0095] (2) Experimental Example 2: Oil phase hardness measurement and high-temperature shaking stability evaluation

[0096] The oil phase prepared in the manufacturing process of Manufacturing Examples 1 and 2 was penetrated at a speed of 30 cm / min using a 3 mm diameter needle, and the penetration hardness (mm) of Examples 1 to 3 and Comparative Examples 4 to 7 was confirmed and is shown in Table 4.

[0097] In addition, after aging Examples 1 to 3 and Comparative Examples 4 to 7 for one day, shaking at 250 rpm for one hour at 40°C was performed, and whether the formulation remained stable was evaluated and is shown in Table 4. The evaluation results are as follows.

[0098] - ◎: ​​Maintains capsule shape without separation

[0099] - O: Capsule form exists, but the formulation is separated

[0100] - △: Transparency disappears and capsules clump together

[0101] - X: Formulation separated

[0102]

[0103] Classification Oil Infiltration Hardness High Temperature Shaking Stability Example 1 32.00◎ Example 2 15.00◎ Example 3 48.00◎ Comparative Example 4 28.00X Comparative Example 5 72.00△ Comparative Example 6 8.00X Comparative Example 7 120.00X

[0104]

[0105] As a result of the experiment, it was confirmed that in the case of Examples 1 to 3, the penetration hardness of the oil phase is appropriately 15 to 60, and the capsule shape is stably maintained without the formulation separating when shaken at high temperature.

[0106] Meanwhile, in the case of Comparative Example 4, in which polyamide-8 was used instead of polyamide-3, the capsules were completely separated during high-temperature shaking.

[0107] In addition, in the case of Comparative Examples 5 and 7, which have a higher polyamide-3 content compared to the example, the hardness was too high, exceeding 60, so the capsules were made non-uniform, such as clumping or separating.

[0108] In addition, in the case of Comparative Example 6, which has a lower polyamide-3 content than the example, the hardness is excessively low at less than 15, and the particles are broken into small pieces before the capsule is formed, making it impossible to visually identify the capsule, and the formulation separates when shaken at high temperature.

[0109]

[0110] (3) Experimental Example 3: Long-term stability evaluation

[0111] Each of Examples 1 to 3 and Comparative Examples 4 to 7 was stored at room temperature and high temperature (45°C) for 3 months, and then observed whether the aqueous phase and oil phase separated or whether some oil seeped out, as shown in Table 5.

[0112]

[0113] Classification Long-term Stability Example 13 months Room temperature and high temperature stability Example 23 months Room temperature and high temperature stability Example 33 months Room temperature and high temperature stability Comparative Example 43 months Room temperature stable, high temperature oil leaching Comparative Example 53 months Room temperature and high temperature stability Comparative Example 63 months Room temperature and high temperature stability Comparative Example 7 Sinking at high temperature

[0114]

[0115] As a result of the experiment, it was confirmed that the formulations of Examples 1 to 3 were stably maintained at room temperature and high temperature for 3 months.

[0116] Meanwhile, in the case of Comparative Example 4, in which polyamide-8 was used instead of polyamide-3, the formulation remained stable for 3 months at room temperature, but oil seeped out at high temperatures.

[0117] In addition, in the case of Comparative Example 7, which has a higher polyamide-3 content compared to the example, some components settled at high temperatures.

[0118]

[0119] (4) Experimental Example 4: Evaluation of UV blocking efficacy

[0120] The in-vitro SPF and PFA values ​​of Examples 1 to 3 and Comparative Examples 4 to 7 were measured using SOLAR LIGHT’s SPF 290AS and are shown in Table 6. Specifically, 2 mg / cm² in the PMMA PLATE 2 After evenly applying the sample, SPF 290AS was used to automatically measure UVB and UVA in the measurement range between 290 and 400 nm at intervals of 1, 2, and 5 nm, and the SPF and PFA values ​​were derived for the blocking ability by wavelength using a calculation formula based on ISO 24443.

[0121]

[0122] Classification In-vitro UV Protection Ability (SPF) In-vitro UV Protection Ability (PFA) Example 1 6418 Example 2 6218 Example 3 6418 Comparative Example 4 4010 Comparative Example 5 5112 Comparative Example 6 3410 Comparative Example 7 278

[0123]

[0124] As a result of the experiment, it can be confirmed that Examples 1 to 3 have in-vitro SPF and in-vitro PFA values ​​of 62 or higher and 18 or higher, respectively, which are significantly superior to Comparative Examples 4 to 7.

[0125] Meanwhile, in the case of Comparative Example 4, which used polyamide-8 instead of polyamide-3, and Comparative Examples 5 to 7, which have a polyamide-3 content that is less or more than that of the Example, the in-vitro SPF value is 51 or less and the in-vitro PFA value is 12 or less, confirming that they are insufficient compared to the Example.

[0126]

[0127] (5) Experimental Example 5: Water resistance evaluation

[0128] For each of Examples 1 to 3 and Comparative Examples 4 to 7, 2 mg / cm² of PMMA PLATE 2 After evenly applying the sample, the PMMA PLATE was immersed in water for 10 minutes four times, and the in-vitro SPF values ​​were measured using the same method as in Experimental Example 4 and are shown in Table 7. Subsequently, the SPF values ​​before immersion and after immersion were compared, and the in-vitro SPF values ​​after immersion relative to the in-vitro SPF values ​​before immersion were calculated as relative values ​​(%) and are shown in Table 7.

[0129]

[0130] Classification In-vitro UV Protection Ability (SPF) After Immersion In-vitro SPF Value Before and After Immersion (%) Example 1 50 78.13% Example 2 41 66.13% Example 3 52 81.25% Comparative Example 4 22 55.00% Comparative Example 5 33 64.70% Comparative Example 6 12 35.29% Comparative Example 7 22 81.48%

[0131]

[0132] As a result of the experiment, in the case of Examples 1 to 3, the in-vitro SPF value after immersion was 41 or higher, and the relative value of the in-vitro SPF value before and after immersion was 65% or higher, confirming that it has excellent water resistance.

[0133] Meanwhile, in the case of Comparative Example 4, which used polyamide-8 instead of polyamide-3, and Comparative Examples 5 and 6, which had a polyamide-3 content that was less or more than that of the Example, the in-vitro SPF value after immersion was 33 or less, and the relative value of the in-vitro SPF value before and after immersion was less than 65%, so it can be confirmed that they have insufficient water resistance compared to the Example.

[0134] In addition, in the case of Comparative Example 7, which has a much higher polyamide-3 content than the example, the relative value of the in-vitro SPF value before and after immersion was excellent, but it was confirmed that the in-vitro SPF value after immersion was 22, which is significantly lower than that of the example.

[0135]

[0136] (6) Experimental Example 6: Evaluation of usability

[0137] Ten experienced researchers in the cosmetics industry were tested on the cosmetic compositions of Examples 1 to 3 and Comparative Examples 4 to 7, each at 2 mg / cm² 2 After application, the stickiness, oiliness, and residue were evaluated, and the results are shown in Table 8. The evaluation results are as follows.

[0138] - ◎: ​​Excellent usability

[0139] - O: Filmy but good

[0140] - △: Leaves a sticky film, but feels good to use after drying.

[0141] - X: Sticky and oily

[0142]

[0143] Classification Usage Sense Example 1 ◎ Example 2 ◎ Example 3 ◎ Comparative Example 4 0 Comparative Example 5 X Comparative Example 6 0 Comparative Example 7 X

[0144]

[0145] As a result of the experiment, it can be confirmed that Examples 1 to 3 have excellent overall usability.

[0146] Meanwhile, in the case of Comparative Examples 5 and 7, which had a higher polyamide-3 content compared to the Examples, they were sticky and oily.

[0147] In addition, in Comparative Example 4, which used polyamide-8 instead of polyamide-3, and Comparative Example 6, which had a lower polyamide-3 content compared to the example, a film-like texture was observed.

[0148]

[0149] 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

1. As a cosmetic composition for ultraviolet protection, Aqueous solution comprising a first ultraviolet blocker; and An oil phase comprising a second UV blocker and an oil gelling agent; comprising, The above oil phase is encapsulated and dispersed in the above aqueous phase, and The above oil gelling agent is a cosmetic composition comprising polyamide-3.

2. In Paragraph 1, A cosmetic composition comprising 5 to 20 weight percent of the polyamide-3 based on the total weight of the oil phase.

3. In Paragraph 1, The above-mentioned first sunscreen is a cosmetic composition comprising one or more of terephthalilyliden dicamphorsulfonic acid and phenylbenzimidazolesulfonic acid.

4. In Paragraph 1, The above second sunscreen comprises one or more selected from the group consisting of ethylhexyl salicylate, homosalate, drometriazole, ethylhexyl triazone, ethylhexyl methoxycinnamate, diethylaminohydroxybenzoyl hexyl benzoate, and bis-ethylhexyloxyphenol methoxyphenyl triazine, and is a cosmetic composition.

5. In Paragraph 1, The above-mentioned aqueous phase is a cosmetic composition further comprising water, a polyol, and a pH adjuster.

6. In Paragraph 5, A cosmetic composition comprising 60 to 70 weight percent of the water based on the total weight of the composition.

7. In Paragraph 1, The above-mentioned aqueous solution further includes a thickening agent, and A cosmetic composition comprising one or more selected from the group consisting of carbomer, polyC10-30 alkyl acrylate, and hydroxypropylmethylcellulose stearoxyether.

8. In Paragraph 1, The above oil phase is a cosmetic composition further comprising lauryl dimethicone / polyglycerin-3 crosspolymer.

9. In Paragraph 8, A cosmetic composition comprising 1 to 3 weight percent of the above lauryl dimethicone / polyglycerin-3 crosspolymer based on the total weight of the composition.

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