sunscreen cosmetics

Abstract

To provide a sunscreen cosmetic which improves maintenance of mixing uniformity of a preparation and caking of metal oxides or hydrophobic spherical powders under high temperature conditions while having a good feeling of use without heavy spreadability or stickiness and water resistance capable of keeping a coating film even under water flow and further subsidiarily, to provide a sunscreen cosmetic having a flash point of 21°C or more.SOLUTION: There is provided a sunscreen cosmetic which comprises the following components: (A) an oil-soluble ultraviolet absorber, (B) Polyurethane-79 gel composition, (C) a non-aqueous volatile component and (D) a hydrophobic spherical organic powder, in which the component (B) comprises polyurethane-79 (B-1) and a liquid oil agent (B-2).SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a sunscreen cosmetic having a good feeling in use, water resistance, good dispersibility, and good storage stability at high temperatures.

Background Art

[0002] In recent years, the importance of compositions for protecting against ultraviolet rays has been increasing. Protecting the skin from ultraviolet rays is an important issue, and various sunscreens having different sunscreen effects have been developed. A sunscreen cosmetic is a product that has the function of protecting the skin from ultraviolet rays by blocking the ultraviolet rays from reaching the skin by blending an ultraviolet absorber or an ultraviolet scattering agent.

[0003] In addition, as a function required for a sunscreen, there is the persistence of the sunscreen effect. In daily life, however, the resistance of a sunscreen cosmetic to falling off due to contact with moisture such as water or sweat, so-called water resistance, is required. The higher the water resistance, the higher the persistence of the sunscreen effect. Therefore, instead of an emulsion cosmetic containing water-soluble components that are easily miscible with water, a method of using an oil-based cosmetic mainly composed of a water-insoluble oil-based base is used.

[0004] Many of the commonly used ultraviolet ray protectants are oil-soluble ultraviolet absorbers, so it is relatively easy to blend them into oil-based cosmetics. On the other hand, however, oil-based cosmetics feel oily and sticky due to the oily components remaining on the skin after application. Therefore, methods such as reducing the amount of oily components remaining on the skin by blending non-aqueous volatile components, or masking the feel of the oily components by blending highly slippery hydrophobic spherical organic powders to achieve a refreshing feeling in use can be used. However, since the blending of non-aqueous volatile components has poor compatibility with ultraviolet absorbers, during use, for example, even if they are once dispersed, they quickly become non-uniform, dispersion and it is difficult to maintain the uniformity of the subsequent formulation. In addition, the blending of hydrophobic spherical powders causes a caking phenomenon in which they settle and solidify at the bottom of the container, resulting in problems such as difficulty in redispersion.

[0005] Patent Document 1 discloses a water-in-oil type sunscreen cosmetic that contains an ultraviolet absorber, an organically modified clay mineral, an oil-phase thickener, a silicone-based surfactant with an HLB of less than 8, spherical resin powder, and volatile silicone oil, which prevents a decrease in ultraviolet protection effect even when in contact with water or sweat. Although the water-in-oil type has relatively good water resistance because the outer phase is not an aqueous phase, it is inferior to oil-based sunscreens. Furthermore, the coated film swells and becomes bulkier when it comes into contact with water after drying, which is thought to increase the physical ultraviolet shielding effect. However, since the swollen coated film is easily washed away by water flow, it is desirable that the state of the coated film does not change when considering water resistance intended for actual use. In addition, because it contains organically modified clay minerals and general oily thickeners, it has low thixotropy, which can cause a sticky feeling due to the viscosity of the oily components when applied to the skin. Furthermore, when a water-in-oil emulsion is used as a stock solution and mixed with a propellant to create an aerosol product, a storage challenge remains: when mixed with a large amount of propellant in the aerosol container, the emulsion cannot be maintained, and the powder settles and caking occurs.

[0006] In addition, Patent Document 2 discloses a sunscreen aerosol cosmetic that addresses the issue of caking, containing a UV protection agent, polyether-modified silicone, ethanol, hydrophobic spherical organic powder, and an oil-soluble film-forming agent, but there is still room for further improvement in terms of water resistance.

[0007] Patent Document 3 discloses a topical skin preparation that has a less oily and occlusive feel by containing an oil-soluble UV absorber, an oil gelling agent, and a non-aqueous volatile component. In addition to the inclusion of an oil gelling agent, the high concentration of the non-aqueous volatile component results in low viscosity and good spreadability during application, and after application, it quickly evaporates, increasing viscosity and adhesion, thus providing water resistance. However, when hydrophobic spherical organic powders or pigments are incorporated, the low viscosity of the formulation and the absence of surfactants cause the powders to settle quickly even with stirring, making it difficult to maintain a mixed state. Furthermore, the high concentration of the non-aqueous volatile component results in a low flash point and a high hazardous material classification, which restricts production locations and storage quantities.

[0008] Patent Document 4 discloses a cosmetic composition containing a polyurethane gel composition, which is an oily thickener. Cosmetics thickened with this polyurethane composition have the characteristics of being elastic yet easy to spread and giving a glossy finish to the applied film, making them excellent makeup cosmetics in terms of usability. However, in sunscreen cosmetics, the appearance, color, and texture of the skin after application tend to be preferred to be natural and blend well with the skin, and it is desirable to minimize the shine and greasiness characteristic of oily components. In particular, the incorporation of this polyurethane composition into oily sunscreen cosmetics may be disadvantageous in that it imparts gloss. Furthermore, in the case of sunscreen cosmetics that are shaken up and down before use, the elasticity of the formulation may lead to a decrease in mixability, making redispersion difficult. Also, when making an aerosol product, the composition should be formulated with the lowest possible viscosity to ensure a uniform and fine spray. In other words, if the viscosity is high, the spray will be rough and uneven, resulting in poor usability.

[0009] Patent Document 5 discloses an oily cosmetic composition that has good stability, is non-greasy, and has a pleasant feel on the skin by combining polyurethane-79, which has good solubility, bis-ethylhexylbisoleyl pyromelitamide, and an oily component. Generally, it is known that the lower the solubility of the gelling agent in a solvent, the more hydrogen bonding is promoted between the gelling agents, resulting in a stronger gel structure. For example, dextrin palmitate, a typical oily gelling agent, tends to have a softer gel strength when combined with ester oils, which have better compatibility with hydrocarbon oils than with hydrocarbon oils. Therefore, it is assumed that polyurethane-79, whose solubility in oily solvents has been improved overall by adding a higher alcohol to its terminals, may not exhibit high gelling performance with a wide range of oils. For this reason, polyurethane-79 alone does not sufficiently exhibit the effects of improved stability over time and improved feel due to gelling, so another oily gelling agent, bis-ethylhexylbisoleyl pyromelitamide, is used in combination. In other words, polyurethane-79 was rarely used alone with the expectation of functioning as an oil gelling agent.

[0010] Thus, no sunscreen cosmetic is known that combines a good feel and water resistance with good consistency in formulation mixing, powder dispersibility, and storage stability at high temperatures. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Japanese Patent Publication No. 2017-071602 [Patent Document 2] Japanese Patent Publication No. 2021-80203 [Patent Document 3] Japanese Patent Publication No. 2021-123591 [Patent Document 4] Japanese Patent Publication No. 2019-182835 [Patent Document 5] Japanese Patent Publication No. 2021-155386 [Overview of the project] [Problems that the invention aims to solve]

[0012] In other words, the objective is to provide a sunscreen cosmetic that offers a good feel without snagging or stickiness during application, water resistance that allows the applied film to be maintained even under running water, while also improving the uniformity of the formulation's mixing and preventing caking of hydrophobic spherical powders and pigments under high-temperature conditions. [Means for solving the problem]

[0013] The inventors conducted diligent studies to achieve the above objective and found that components (A) to (D) (A): Oil-soluble UV absorber (B): Polyurethane-79 gel composition (C): Non-aqueous volatile components (D): Hydrophobic spherical organic powder It contains, Component (B) (B-1) Polyurethane-79 and (B-2) Liquid oil are characterized by being composed of these two components. The above problems were solved by using a sunscreen cosmetic.

Advantages of the Invention

[0014] By adopting the above means, it is possible to provide a sunscreen cosmetic that has a good feeling of use without sticking or greasiness due to the oily component during application and without a sense of occlusion, and has high water resistance. Furthermore, by improving the phase separation and powder sedimentation that occur when a volatile component, a hydrophobic spherical organic powder, or a pigment having low compatibility with the oily component is blended, it is possible to provide a sunscreen cosmetic with good dispersibility and storage stability. Secondarily, it is possible to provide a sunscreen cosmetic having a flash point of 21°C or higher.

Best Mode for Carrying Out the Invention

[0015] The sunscreen cosmetic of the present invention can be obtained by blending specific components (A), component (B), component (C), and component (D).

[0016] <Component (A): Oil-soluble ultraviolet absorber> Component (A) blended in the present invention is not particularly limited as long as it is an ultraviolet absorber usually blended in a sunscreen cosmetic. Specific examples include ethylhexyl methoxycinnamate, octocrylene, t-butylmethoxydibenzoylmethane, ethylhexyl triazone, hexyl diethylaminohydroxybenzoyl benzoate, oxybenzone-3, methylene bisbenzotriazolyl tetramethylbutylphenol, phenylbenzimidazole sulfonic acid, homosalate, and the like.

[0017] When it is desired to exhibit an excellent ultraviolet protection effect in a wide wavelength range from UVA to UVB, for example, component (A) blended in the present invention is preferably blended by combining at least one kind each of an ultraviolet absorber having an absorption peak in the UVA region (UVA absorber) and an ultraviolet absorber having an absorption peak in the UVB region (UVB absorber), or by blending at least one kind of an ultraviolet absorber having a wide absorption band extending from the UVA region to the UVB region.

[0018] The blending amount of component (A) varies depending on the desired UV protection effect. For example, it is 3% by mass or more, more preferably 5 - 60% by mass, and even more preferably 10 - 30% by mass based on the total amount of the composition. Within this range, a certain UV protection effect can be expected. When the obtained composition is made into an aerosol as a stock solution, the blending amount may be considered as the ratio in the stock solution. The same applies to the following components.

[0019] <Component (B): Polyurethane-79 gel composition> The component (B) polyurethane-79 gel composition of the present invention is an oil gelling composition composed of (B-1) polyurethane-79 and (B-2) a liquid oil agent.

[0020] (B-1) Polyurethane-79 is a copolymer having a block of a hard segment formed by 1,6-hexamethylene diisocyanate (HDI), which is a linear aliphatic diisocyanate, and 1,4-butanediol, which is a linear extender diol, becoming polyurethane by a urethane bond, and a block of a soft segment of hydrogenated dilinoleyl alcohol and hydrogenated polybutanediol, and is a polyurethane blocked at both ends with stearyl alcohol. It is considered that due to the polarity of the polyurethane block, an association through hydrogen bonds between polymer-polymer and polymer-oil forms a physical network in the oil, and gelation occurs by incorporating the oil agent into this three-dimensional network structure. Preferably, (B-1) polyurethane-79 used in the present invention is made into a gel-like composition dissolved in (B-2) a liquid oil agent, which makes it easy to dissolve uniformly.

[0021] The polyurethane-79 gel composition of the present invention (B) can be the commercially available OILKEMIA 5S CC (manufactured by LUBRIZOL). Its composition is (B-1) polyurethane-79 gel composition containing 30% polyurethane-79 and (B-2) tri(caprylic / capric acid)glyceryl as a liquid oil. When incorporated into cosmetics in Japan, it is common to list the ingredients as 70% tri(caprylic / capric acid)glyceryl, 25% hydrogenated polyolefin (C6-20), and 5% (HDI / trimethylol hexyllactone) crosspolymer.

[0022] The content of (B-1) polyurethane-79 in the polyurethane-79 gel composition of (B) is preferably 10 to 50% by mass, and more preferably 20 to 40% by mass. The content of liquid oil (B-2) in the polyurethane-79 gel composition (B) is preferably 50 to 90% by mass, and more preferably 60 to 80% by mass. By setting the range to this extent, uniform dissolution during manufacturing becomes easier, the blending concentration can be easily adjusted, and the effects of the invention can be significantly obtained, which is preferable.

[0023] The liquid oil (B-2) used in the polyurethane-79 gel composition of (B) is not particularly limited as long as it is commonly used in cosmetics. While its properties are not particularly limited, it is preferably a liquid oil at 25°C. Examples of liquid oils (B-2) used in the polyurethane-79 gel composition of (B) include those of any origin, such as animal oils, vegetable oils, or synthetic oils, such as hydrocarbon oils, ester oils, fatty acids, and silicone oils. It is preferable to use one or more of these in the liquid oil (B-2).

[0024] The preferred amount of component (B) is not particularly limited, but for example, it is 0.1 to 5% by mass relative to the total amount of the composition, a more preferred amount is 0.3 to 3% by mass, and an even more preferred amount is 0.5 to 2% by mass.

[0025] <Component (C): Non-aqueous volatile component> The non-aqueous volatile components used in the present invention are not particularly limited as long as they are components other than water that are commonly used in cosmetics and exhibit volatility at room temperature (25°C) and atmospheric pressure (1 atm). Specifically, examples include (C-1) volatile hydrocarbon oils, (C-2) volatile silicone oils, and (C-3) ethanol. Examples of volatile hydrocarbon oils include isododecane and hydrogenated polyisobutene. Examples of volatile silicone oils include volatile linear and branched silicone oils (volatile dimethicone) and cyclic silicone oils. Specifically, examples of linear silicone oils include low-viscosity dimethylpolysiloxane such as decamethyltetrasiloxane, branched silicone oils include methyl trimethicone and caprylyl methicone, and cyclic silicone oils include octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane. In this invention, "volatile component" refers to a component that exhibits volatility at 1 atmosphere and 25°C, while "non-volatile" refers to a component that does not exhibit volatility at 1 atmosphere and 25°C, and volatile components other than water are referred to as "non-aqueous volatile components."

[0026] Among the non-aqueous volatile components mentioned above, the inclusion of component (C-1) volatile hydrocarbons improves skin compatibility, while the inclusion of component (C-2) volatile silicone oil tends to reduce stickiness. Furthermore, the inclusion of component (C-3) ethanol significantly reduces the oily feeling. Component (C) may be formulated alone or in combination of two or more components. For example, this includes cases where component (C) consists of only component (C-1), and components (C-2) and (C-3) are not included.

[0027] The amount of component (C) is not particularly limited, but a preferred amount is 5 to 60% by mass of the total composition, a more preferred amount is 15 to 55% by mass, and an even more preferred amount is 30 to 50% by mass. Within this range, a sunscreen cosmetic can be obtained that has a light spreadability, a reduced oily film feeling, and is fast-drying and easy to use. Furthermore, if the amount of component (C-3) is less than 10% by mass of the total composition, the flash point will not fall below 21°C, which is preferable from the standpoint of reducing restrictions on the manufacturing location of hazardous materials and increasing the amount that can be stored. This also includes the case where component (C-3) is not included.

[0028] <Component (D): Hydrophobic spherical organic powder> The component (D) incorporated in the present invention is not particularly limited as long as it is commonly used in cosmetics. Specifically, examples include silicone-based spherical powders such as (vinyl dimethicone / methicone silsesquioxane) crosspolymer, (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer, and (dimethicone / vinyl dimethicone) crosspolymer; acrylic acid-based crosslinked polymers such as methyl methacrylate crosspolymer and (acrylates / ethylhexyl acrylate) crosspolymer; and polyamide-based powders such as nylon-12 and nylon-6. Preferred commercially available products include KSP-100, 105, 300 (manufactured by Shin-Etsu Chemical Co., Ltd.), DOWSIL TREFIL E-506S (manufactured by Toray Dow Corning), Techpolymer MBP-8HP, Techpolymer ACX-1502C (manufactured by Sekisui Chemical Co., Ltd.), ORGASOL 2002 EXD NAT COS, ORGASOL 1002 D NAT COS (manufactured by Arkema). These can be used individually or in combination.

[0029] The amount of component (D) is not particularly limited, but for example, a preferred amount is 0.1 to 20% by mass of the total amount of the composition, a more preferred amount is 2 to 15% by mass, and an even more preferred amount is 3 to 10% by mass. By keeping it within this range, it is less likely to turn white after application and a good feeling of use can be maintained for a long time.

[0030] In this invention, the inclusion of water itself, water-containing plant extracts, water-containing raw materials, etc., is permitted as long as it does not impede the invention. In other words, while this invention does not inherently require the inclusion of water, it is acceptable to include water for the purpose of incorporating moisturizers such as plant extracts. Therefore, it is not a necessary condition to make it a so-called non-aqueous system.

[0031] On the other hand, if the moisture content is too high, uniformity decreases and layer separation becomes more likely. Also, if powders such as UV scattering agents are incorporated, problems such as caking and inability to redisperse may occur. The amount of moisture that maintains uniformity and redispersibility varies depending on the formulation, but for example, a moisture content of 3.0% by mass or less can maintain good condition.

[0032] In the present invention, in addition to the essential components, oils other than components (A) and (B-2) may be included, as long as they do not impair the effects of the present invention. For example, oils such as vegetable oils, ester oils, hydrocarbon oils, and silicone oils may be included. Specific examples include animal and vegetable oils such as avocado oil, macadamia nut oil, olive oil, beeswax, and candelilla wax; ester compounds such as isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, isostearyl myristate, cetyl 2-ethylhexanoate, octyldodecyl myristate, and glyceryl tristearate; hydrocarbon oils such as squalane, liquid paraffin, isododecane, hydrogenated polyisobutene, paraffin, white petrolatum, and ceresin; and silicone compounds such as dimethicone, cyclopentasiloxane, caprylyl methicone, and diphenylsiloxyphenyl trimethicone.

[0033] The sunscreen cosmetic of the present invention may also contain, as necessary, ingredients commonly used in cosmetics, such as whitening agents, moisturizers, thickeners, antioxidants, metal ion chelating agents, surfactants, polyhydric alcohols, UV scattering agents, powders, pearls, colorants, fragrances, etc., within a qualitative and quantitative range that does not impede the effects of the present invention.

[0034] The form of the sunscreen cosmetic of the present invention is not particularly limited, for example, ,B It may also be a lotion, spray (aerosol type, non-aerosol type), etc. Among the above, the form of the sunscreen cosmetic of the present invention is preferably a spray, and more preferably an aerosol spray type sunscreen cosmetic, from the viewpoint of ultraviolet protection effect and ease of use. The aerosol container is filled with the cosmetic of the present invention as a concentrate, along with a propellant. The mass ratio of the concentrate to the propellant (concentrate / propellant) is preferably 40 / 60 to 10 / 90, and more preferably 25 / 75 to 15 / 85. Within this range, sufficient spraying force can be obtained, and the product can be sprayed uniformly.

[0035] The propellant used in the present invention is not particularly limited, as long as it is a propellant that can be used in aerosol products in general. For example, various liquefied petroleum gases (LPG), dimethyl ether, mixtures of liquefied petroleum gas and dimethyl ether, and compressed gases such as nitrogen gas and carbon dioxide can be used. LPG is a liquefied petroleum gas whose main components are propane, butane, and isobutane. Furthermore, the cosmetic composition of the present invention can be applied not only to sunscreen cosmetics, but also to makeup cosmetics such as foundations and makeup bases that provide sunscreen effects. [Examples]

[0036] The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the present invention in any way. Unless otherwise specified, the amounts of ingredients are given in mass percent.

[0037] Each component except the non-aqueous volatile component and powder listed in Tables 1 and 2 below was heated and dissolved, then the powder was added. After general stirring with a disperser or homomixer, the mixture was cooled, and the non-aqueous volatile component was added after cooling to obtain the stock solution. Evaluation items 1 and 5 were evaluated for each of the obtained stock solutions. For evaluation items 2 to 4, 6 g of the stock solution and 24 g of LPG (gas pressure: 0.15 MPa) as a propellant were filled into a 100 mL aerosol test bottle (Tokyo Polymer Co., Ltd.: transparent glass test bottle with a soft PVC coating) to create a test sample (bulk:propellant = 1:4).

[0038] Evaluation Item 1: <Evaluation of Water Resistance> Each example of the cosmetic composition was placed at a concentration of 2 mg / cm² on a designated PMMA plate (polymethyl methacrylate) HELIOPLATE HD6 (5 × 5 cm, surface roughness 6 μm, manufactured by HELIOSCREEN). 2 The required amount was dropped onto the surface, spread with a finger for 60 seconds, and allowed to dry for 15 minutes. The SPF value was then measured using an SPF analyzer (LABSPHERE UV TRANSMITTANCE ANALYZER / UV-1000S). Next, the PMMA plates (coated with each composition) were immersed in running water for 40 minutes, thoroughly dried, and the SPF value was measured again. The percentage of the SPF value after the water resistance test relative to the SPF value before the water resistance test was calculated and defined as the residual rate (%) (see Formula 1 below). In this invention, it was determined that sufficient UV protection was maintained when the SPF value change suppression rate exceeded 95%.

[0039]

number

[0040] Evaluation Item 2: <Evaluation of Separation Speed> Each aerosol test bottle containing a test sample was vigorously shaken up and down to ensure the contents were uniform. After confirming this, the time it took for a clear layer to appear on top of the sample was measured. ◎: No transparent layer appears on top for more than 1 minute. 〇:Separation begins between 30 seconds and 1 minute, and a transparent layer appears on top. △: Separation begins after 10-30 seconds, and a transparent layer appears on top. ×: Separation begins within 10 seconds, and a transparent layer appears on top.

[0041] Evaluation Item 3: <Evaluation of caking (evaluation of redispersibility under high-temperature storage)> (Caking: A condition where the settled lower layer has poor dispersion, sticking to the bottom and not dispersing uniformly.) The aerosol test bottles containing the test samples prepared for the separation rate evaluation were left to stand at 40°C for one month, and their dispersibility was evaluated when they were inverted and mixed. ◎: The powder at the bottom will be gone within 10 uses. ○: The powder at the bottom will disappear after 10 to 20 uses. △: The powder at the bottom disappears after 20 to 50 uses. ×: Even after turning it over 50 times, the powder that had aggregated at the bottom did not disappear.

[0042] Evaluation Item 4: Sensory Evaluation (Lack of Stickiness) A panel of 10 experts used the following evaluation criteria to make their decisions. ◎: More than 9 people responded that it was not sticky. ○: 6 to 8 people answered that it was not sticky. △: 3 to 5 people answered that it was not sticky. ×: Two or fewer people answered that it was not sticky.

[0043] Evaluation Item 5: <Evaluation of Flash Point> The flash point was measured using a TAG sealed flash point analyzer from 25°C to 80°C. Furthermore, for the undiluted liquid that did not ignite in the sealed analyzer, the flash point was measured using a Cleveland open flash point analyzer until the liquid boiled.

[0044] Evaluation Item 5: Overall Evaluation The evaluation of the above evaluation items 1 through 5 was comprehensively assessed and used to make a decision. +++: Three or more ◎s, no △ or lower ratings in evaluation items 1-4. ++: Two ◎ marks, no ratings below △ in evaluation items 1-4. + : One ◎, no ratings below △ in evaluation items 1-4. - : 0 ◎ marks or △ or lower ratings in evaluation items 1-4.

[0045] [Table 1]

[0046] [Table 2]

[0047] Tables 1 and 2 show the formulations for Examples 1-7 and Comparative Examples 1-6, and summarize the results for each evaluation item. Comparative Example 1, which contains an oil-soluble UV absorber as component (A) and does not contain component (B) polyurethane-79 gel composition, incorporates component (D), a highly slippery hydrophobic spherical organic powder. Although it has a smooth, non-sticky feel, the powder dispersibility is poor, causing it to separate immediately after stirring, making it difficult to maintain formulation uniformity. Furthermore, caking was observed during high-temperature storage, making it difficult to maintain the designed quality when considering storage during the summer months when sunscreen is used. Therefore, in Examples 1 to 3, which incorporated component (B) polyurethane-79 gel composition, the separation rate after stirring was slowed, which maintained the uniformity of the formulation during use. Furthermore, the powder dispersibility improved, preventing caking, and the coating film became stronger after drying, resulting in improved water resistance. On the other hand, in Comparative Examples 2 to 4, in which component (B') was incorporated as an oil gelling agent commonly used for thickening oils, although its thickening mechanism differs from that of component (B) polyurethane-79 gel composition, sufficient improvement in the separation rate after stirring was not observed, and caking also occurred. Furthermore, in Comparative Example 4, the dibutyl lauroyl glutamide, which is component (B'), had aggregated, which was undesirable from a product quality standpoint. In Examples 4 and 5, component (C), a non-aqueous volatile component, is present in high concentrations, resulting in a low flash point and high hazard classification. This presents problems in terms of production locations and storage quantities. Furthermore, it is necessary to consider that high concentrations of non-aqueous volatile components can be irritating. However, since the feel and stability are excellent, there are no problems in terms of product use. Comparative Example 5, lacking component (D), which is a hydrophobic spherical powder, did not exhibit caking, but it felt sticky due to the oily component, and its water resistance was also poor. Comparative Example 6, in which component (B) polyurethane-79 gel composition was replaced with dextrin palmitate in Comparative Example 5, still exhibited stickiness due to the oily component, and in fact, the stickiness of the dextrin palmitate became noticeable, and the separation rate also increased. In Example 6, although the amount of component (D), which is a hydrophobic spherical powder, is small, it is possible to mask the stickiness caused by the oily component. Furthermore, even in Example 7, where the amount of component (D) is large, caking is prevented, demonstrating that it is possible to achieve both a good feel and stability.

[0048] Although not shown in the evaluation results in Table 1, these examples did not exhibit powder caking even in their undiluted form, and their stability was good even when stored at high temperatures.

[0049] The compositions for each formulation were prepared using conventional methods. It was confirmed that all formulations exhibited the effects of the present invention.

[0050] <Chemical-type sunscreen cosmetics> 1. Ethylhexyl Methoxycinnamate 9.0% by mass 2. Bis-ethylhexyloxyphenol methoxyphenyl triazine 1.5% by mass 3. Diethylamino hydroxybenzoyl hexyl benzoate 1.0% by mass 4. Octocrylene 1.0% by mass 5. Ethylhexyl triazone 0.5% by mass 6. Polyurethane-79 gel composition*1 1.0% by mass 7. (VP / Eicosene) Copolymer 1.0% by mass 8. Isododecane 35% by mass 9. Ethanol 5.0% by mass 10. Cyclopentasiloxane 5.0% by mass 11. (Vinyl dimethicone / methicone silsesquioxane) crosspolymer 9.0% by mass 12. Dimethylsilylated silica*3 1.0% by mass 13. Neopentyl glycol diethylhexanoate (residue) 14. PEG / PPG-19 / 19 Dimethicone / Cyclopentasiloxane Mixture*2 1.0% by mass 15. Silicon-treated zinc oxide dispersion of fine particles 5.0% by mass 16. SA / NAI treated pigment-grade titanium dioxide dispersion*3 2.5% by mass 17. Ultramarine 0.5% by mass 18. Polyglyceryl-2 Triisostearate 1.0% by mass 19.Fragrance trace amount Total 100.0% by mass *1: OILKEMIA 5S CC Polymer (manufactured by LUBRIZOL) *2: DOWSIL BY 11-030 (manufactured by Toray Dow Corning) *3: SA / NAI-TR-10 / D5 (80%) MiBrid Color Dispersion (manufactured by Miyoshi Chemical Co., Ltd.)

[0051] The resulting chemical-type sunscreen cosmetic was satisfactory in all respects, possessing both a good feel and water resistance, while also exhibiting excellent stability in terms of maintaining uniform mixing of the formulation and preventing caking of powders and pigments.

[0052] <Sunscreen cosmetic containing both UV absorbers and UV scatterers> 1. Ethylhexyl Methoxycinnamate 6.0% by mass 2. Diethylamino hydroxybenzoyl hexyl benzoate 1.0% by mass 3. Dimethicone diethyl benzalmalonate 2.0% by mass 4. Polyurethane-79 gel composition*1 1.5% by mass 5. Isododecane 15.0% by mass 6. Cyclopentasiloxane 15.0% by mass 7. Methyltrimethicone 5.0% by mass 8. Ethanol 10.0% by mass 9. Nylon 12 spherical powder (average particle size 10 μm) 8.0% by mass 10. Polymethylsilsesquioxane 1.0% by mass 11. Isononyl isononanoate (residue) 12. PEG / PPG-19 / 19 Dimethicone / Cyclopentasiloxane Mixture*2 3.0% by mass 13. Isostearic acid-treated fine particle zinc oxide dispersion*3 5.0% by mass Total 100.0% by mass *1: OILKEMIA 5S CC POLYMER (manufactured by LUBRIZOL) *2: DOWSIL BY 11-030 (manufactured by Toray Dow Corning) *3: FLZ-10 (manufactured by Teika Co., Ltd.)

[0053] The resulting sunscreen cosmetic, which combines UV absorbers and UV scatterers, offered excellent stability in terms of maintaining uniform mixing of the formulation and preventing powder caking, while also providing a good feel and water resistance. Overall, it was satisfactory in all respects.

[0054] <Cyclic silicone-free sunscreen cosmetic> 1. Ethylhexyl Methoxycinnamate 10.0% by mass 2. Octocrylene 3.0% by mass 3. t-Butyl methoxydibenzoylmethane 1.0% by mass 4. Ethylhexyltriazone 1.0% by mass 5. Neopentyl glycol diethylhexanoate 30.0% by mass 6. Polyurethane-79 gel composition*1 2.0% by mass 7. Isododecane Residue 8. Ethanol 15.0% by mass 9. Polymethyl methacrylate crosspolymer spherical porous powder (average particle size 6 μm) 15.0% by mass 10. PEG / PPG-19 / 19 Dimethicone / Hydrogenated Polyisobutene Mixture*2 4.0% by mass 11. Roman chamomile flower oil (trace amount) 12. Lavender flower oil (trace amount) Total 100.0% by mass *1: OILKEMIA 5S CC Polymer (manufactured by LUBRIZOL) *2: DOWSIL BY 25-337 (manufactured by Toray Dow Corning)

[0055] The resulting cyclic silicone-free sunscreen cosmetic was satisfactory in all respects, possessing both a good feel and water resistance, while also exhibiting excellent stability in terms of maintaining uniform mixing of the formulation and preventing powder caking.

Claims

1. The following ingredients, (A): Oil-soluble UV absorber (B): Polyurethane-79 gel composition (C): Non-aqueous volatile components (D): Hydrophobic spherical organic powder It contains, Component (B) (B-1) Polyurethane-79 and (B-2) Liquid oil are characterized by being composed of these two components. Liquid sunscreen cosmetic.

2. The liquid sunscreen cosmetic composition according to claim 1, wherein the content of ethanol in component (C) relative to the total amount of the composition is less than 10% by mass.

3. The following components, (A): Oil-soluble UV absorber (B): Polyurethane-79 gel composition (C): Non-aqueous volatile components (D): Hydrophobic spherical organic powder It contains, Component (B) (B-1) Polyurethane-79 and (B-2) Liquid oil are characterized by being composed of these two components. A sunscreen cosmetic product, either in aerosol spray form or non-aerosol spray form.

4. A liquid sunscreen cosmetic composition according to claim 1 or claim 2, wherein the flash point is 21°C or higher.

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