Oil-in-water sunscreen cosmetics

Abstract

To provide an oil-in-water type sunscreen cosmetic having a fresh feeling of use without squeaky feeling and good stability.SOLUTION: There is provided an oil-in-water type sunscreen cosmetic which comprises (A) carboxydecyl dimethicone, (B) a hydroxypropyl methylcellulose stearoxy ether, (C) one or two or more selected from a carbomer, a polymer having 2-acrylamido-2-methyl sulfonic acid and / or its salt as constitutional components, a (PEG-240 / decyltetradeceth-20 / HDI) copolymer and a polyacrylamide, (D) a hydrophobized ultraviolet scattering agent, (E) an ultraviolet scattering agent and (F) a basic compound, wherein the component (D) is dispersed in the oil phase and the component (E) is dispersed in the water phase.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a water-in-oil sunscreen cosmetic that stably disperses and formulates an ultraviolet scattering agent in both an aqueous phase and an oil phase, and has a fresh and non-gritty feel when applied.

Background Art

[0002] Water-in-oil emulsified cosmetics are widely used as a base that gives a fresh and non-greasy feel compared to oil-in-water type. In particular, since the main use environment of sunscreen cosmetics is summer, a fresh and non-gritty feel without a squeaky feeling is required.

[0003] Cosmetics having a sunscreen effect are formulated with an ultraviolet absorber or an ultraviolet scattering agent as a means for protecting the skin from ultraviolet rays. Although the ultraviolet absorber has a high ultraviolet protection effect, there are problems such as irritation to the skin and a sticky feeling when highly formulated. Therefore, in recent years, from the viewpoints of environmental consideration and reduction of burden on the skin, the application of an ultraviolet scattering agent that physically reflects and scatters ultraviolet rays is expected.

[0004] The ultraviolet scattering agent is characterized by having a lower ultraviolet protection effect than the ultraviolet absorber. Therefore, in order to realize a sunscreen cosmetic having an excellent ultraviolet protection effect by formulating an ultraviolet scattering agent, it is necessary to formulate a large amount of the ultraviolet scattering agent.

[0005] Generally, the ultraviolet scattering agent is often formulated in the oil phase from the viewpoints of a squeaky feeling and stability. However, when a large amount of the ultraviolet scattering agent is formulated in the oil phase, there is a problem that the amount of the oil phase increases and the fresh feel of the water-in-oil cosmetic is impaired.

[0006] Therefore, in order to obtain a refreshing feel in sunscreen cosmetics, there is a technique of dispersing UV scattering agents in the aqueous phase. For example, a cosmetic has been reported in which hydrophobic powder is well dispersed in the aqueous phase by carboxylic acid-modified silicone, providing a refreshing feel when used and forming a highly water-resistant cosmetic film on the skin (Patent Document 1). However, in Patent Document 1, the UV scattering agent is only included in the aqueous phase, and the amount of UV scattering agent is insufficient to provide excellent UV protection.

[0007] As described above, methods for stably dispersing ultraviolet scattering agents in an aqueous phase have been reported, but the stability when the ultraviolet scattering agent is dispersed in both the aqueous and oil phases has not been described. Furthermore, it has been reported that the resulting product has a refreshing feel, but a refreshing feel and the squeaky feeling caused by the ultraviolet scattering agent in this application are different sensations, and the technology described in Patent Document 1 does not improve the squeaky feeling.

[0008] The development of sunscreen cosmetics that stably incorporate UV scattering agents in both the aqueous and oil phases is urgently needed, as it offers both a refreshing feel and excellent UV protection. However, incorporating UV scattering agents in both the aqueous and oil phases is extremely difficult from the standpoint of stability and user experience.

[0009] In particular, while UV scattering agents cause less skin irritation, their whiteness upon application and characteristic squeaky feeling can be problematic. In oil-in-water emulsion cosmetics, the lower oil content compared to water-in-oil emulsion cosmetics makes the squeaky feeling caused by UV scattering agents more noticeable, posing a significant challenge. Furthermore, when UV scattering agents are dispersed in the outer aqueous phase, the UV scattering agents, which are not covered by an oil film, come into direct contact with the skin during application, resulting in a stronger squeaky feeling derived from the powder compared to when they are incorporated into the oil phase. When UV scattering agents are dispersed in both phases, it becomes necessary to eliminate the squeaky feeling in both the aqueous and oil phases, making it even more difficult to improve the user experience.

[0010] As a method to improve the deterioration of the user experience caused by UV scattering agents, it has been proposed to incorporate hydroxypropyl methylcellulose stearoxy ether as an emulsifier (Patent Document 2). However, while this method can improve the feel of UV scattering agents incorporated in the oil phase, it is difficult to improve the user experience of UV scattering agents dispersed in both the aqueous and oil phases. Furthermore, while it is mentioned that it reduces stickiness from the oil phase and improves the user experience, it does not address the improvement of the squeaky feeling caused by UV scattering agents.

[0011] Furthermore, a method has been reported to improve the stability of UV scattering agents dispersed in the aqueous phase and the squeaky feeling during application, by incorporating a hydrophilic UV scattering agent into an oil-in-water emulsion cosmetic containing water-swellable clay minerals, anionic surfactants, nonionic surfactants, sterols, and fatty acids (Patent Document 3). However, this method has limitations on the surfactants used, as well as limitations on the emulsification method, and also suffers from the problem of stickiness characteristic of water-swellable clay minerals. In addition, examples in which UV scattering agents are dispersed in both phases have not been evaluated.

[0012] Furthermore, studies have been conducted to reduce the squeaky feeling by hydrophobizing the UV scattering agent (Patent Document 4). This report states that the squeaky feeling is reduced even when the UV scattering agent is dispersed in both phases, but our investigation revealed that the squeaky feeling was not completely improved, and the user experience was not satisfactory. It should be noted that in this report, the reduction in squeaky feeling is due to the use of a hydrophobized UV scattering agent, and does not involve at least one surfactant selected from polyglycerol fatty acid esters and polyoxyalkylene glycerol fatty acid esters with an HLB of 9.5 or less, or an aqueous thickener consisting of at least one water-soluble polymer and / or water-swellable polymer. In other words, this is not a technology to reduce the squeaky feeling of hydrophobized UV scattering agents, but rather a technology that reduces the squeaky feeling compared to non-hydrophobized UV scattering agents, and therefore is a different technology from the squeaky feeling improvement that is the subject of this application.

[0013] Patent Document 5 reports a technique that provides high stability and a refreshing feel by combining a carboxylic acid-modified silicone with an ultraviolet scattering agent. However, the carboxylic acid-modified silicone in Patent Document 5 is not used to disperse the ultraviolet scattering agent, but rather as an emulsifier, which is a different application from the technique of the present invention. The basis for its use as an emulsifier is that, although neutralization with a basic compound is necessary when using carboxylic acid-modified silicone as a dispersant, no basic compound is used. In addition, while it is stated that a refreshing feel is provided, the squeaky feeling in the present invention is a different sensation from a refreshing feel, and it cannot be assumed from Patent Document 5 that the squeaky feeling in the present invention will be improved. Furthermore, the combination of hydrophobic modified alkylcellulose and carbomer is specified (Reference 6). However, Patent Document 6 only incorporates the UV scattering agent in the oil phase, and the amount is small. In addition, there is no mention of improving squeaking, so it is not possible to envision a technology to improve the squeaking sensation when the UV scattering agent is incorporated in both the oil and water phases.

[0014] Based on the above, it was difficult to develop an oil-in-water type sunscreen cosmetic that disperses and blends UV scattering agents in both the aqueous and oil phases, resulting in a refreshing feel without any stickiness upon application, using conventional methods. [Prior art documents] [Patent Documents]

[0015] [Patent Document 1] Japanese Patent Publication No. 2015-203026 [Patent Document 2] Japanese Patent Publication No. 2017-155048 [Patent Document 3] Japanese Patent Publication No. 2018-070477 [Patent Document 4] Japanese Patent Publication No. 2016-074660 [Patent Document 5] Japanese Patent Publication No. 2020-029453 [Patent Document 6] Japanese Patent Application Laid-Open No. 2015-120682

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0016] The present invention has been made in view of the above prior art, and an object thereof is to provide an oil-in-water type sunscreen cosmetic having a fresh and smooth feel without a creaking sensation and high stability.

MEANS FOR SOLVING THE PROBLEMS

[0017] As a result of intensive studies, the present inventors have found that the above problems can be solved by containing carboxydecyl dimethicone as a dispersant, hydroxypropyl methylcellulose stearoxy ether as a water-soluble polysaccharide, carbomer as another polymer, a polymer having 2-acrylamido-2-methylsulfonic acid and / or its salt as constituent components, a (PEG-240 / decyltetradeceth-20 / HDI) copolymer, or polyacrylamide, a hydrophobically treated ultraviolet scattering agent in the oil phase, and an ultraviolet scattering agent and a basic compound in the aqueous phase, and thus the present invention has been completed.

[0018] That is, the present invention is an oil-in-water type sunscreen cosmetic characterized by containing the following components (A) to (F), wherein component (D) is dispersed in the oil phase and component (E) is dispersed in the aqueous phase. (A): Carboxydecyl dimethicone (B): Hydroxypropyl methylcellulose stearoxy ether (C): One or more selected from carbomer, a polymer having 2-acrylamido-2-methylsulfonic acid and / or its salt as constituent components, a (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and polyacrylamide (D): Hydrophobically treated ultraviolet scattering agent (E): Ultraviolet scattering agent (F): Basic compound

Advantages of the Invention

[0019] According to the present invention, it is possible to provide an oil-in-water sunscreen cosmetic having a fresh and smooth feel in use without a squeaking sensation and having good stability.

Best Mode for Carrying Out the Invention

[0020] Hereinafter, the present invention will be described in more detail. Unless otherwise noted, when the blending amount of a component is expressed as "%" hereinafter, it means mass%.

[0021] Component (A) carboxydecyl dimethicone (hereinafter, may be simply referred to as "component (A)") used in the present invention is a silicone-based dispersant in which a carboxydecyl group (group-(CH2) 10 -COOH) is imparted as a hydrophobic group to the dimethicone main chain.

[0022] The blending amount of component (A) in the present invention is not particularly limited as long as the effects of the present invention can be obtained, but it is preferably included in the range of 0.3% to 5% by mass, more preferably 0.5% to 4% by mass. When it is 0.3% by mass or more, the dispersion of the ultraviolet scattering agent is very good, which is preferable in terms of no squeaking sensation, dispersibility stability, and stability over time. When it is 5% by mass or less, the stability over time and the absence of a squeaking sensation are good.

[0023] Component (B) hydroxypropyl methylcellulose stearoxy ether (hereinafter, may be simply referred to as "component (B)") used in the present invention is represented by the following general formula (I).

Chemical formula

[0024] The weight-average molecular weight of component (B) in the present invention is preferably 100,000 to 1,000,000, more preferably 300,000 to 800,000, and even more preferably 550,000 to 750,000.

[0025] The amount of component (B) used in this invention is not particularly limited as long as the effects of the present invention are obtained, but is preferably 0.01 to 1% by mass, and more preferably 0.03 to 0.5% by mass. Below 0.01% by mass, a sufficient squeaking improvement effect cannot be obtained, and even if the amount exceeds 1% by mass, it is difficult to obtain a further increase in the effect.

[0026] Component (C) used in the present invention is a water-soluble polymer selected from carbomer, polymers having 2-acrylamide-2-methylsulfonic acid and / or its salt as constituent components, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and polyacrylamide. Here, carbomer is a general term for polymers containing a polymerizable vinyl group and a polymerizable monomer having a carboxyl group as at least one constituent unit. Furthermore, the polymer having 2-acrylamide-2-methylsulfonic acid and / or its salt as constituent components may be either a homopolymer or a copolymer.Specifically, (HEA / Sodium Acryloyldimethyl Taurate / Steareth-20 Methacrylate) Copolymer, (Acrylamide / Sodium Acryloyldimethyl Taurate) Copolymer, (Acrylamide / Sodium Acryloyldimethyl Taurate / Acrylic Acid) Copolymer, (Sodium Acrylate / Acryloyldimethyl Taurine) Copolymer, (Sodium Acrylate / Acryloyldimethyl Taurine / Dimethylacrylamide) Crosspolymer, (Sodium Acrylate / Sodium Acryloyldimethyl Taurate) Copolymer, (Sodium Acrylate / Sodium Acryloyldimethyl Taurate / Acrylamide) Copolymer, (Hydroxyethyl Acrylate / Acryloyldimethyl Taurine) Copolymer Sodium, (Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate) Copolymer, (Sodium Acryloyldimethyl Taurate / VP) Crosspolymer, (Acryloyldimethyl Examples include sodium taurate / PEG-8 diacrylate crosspolymer, sodium acryloyldimethyltaurate / methacrylamide laurate copolymer, ammonium acryloyldimethyltaurate / VP copolymer, ammonium acryloyldimethyltaurate / carboxyethylammonium acrylate crosspolymer, ammonium acryloyldimethyltaurate / steareth-25 methacrylate crosspolymer, ammonium acryloyldimethyltaurate / steareth-8 methacrylate copolymer, ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer, ammonium acryloyldimethyltaurate / laureth-7 methacrylate copolymer, dimethylacrylamide / sodium acryloyldimethyltaurate crosspolymer, and sodium polyacryloyldimethyltaurate. In particular, (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, (sodium acrylate / sodium acryloyldimethyl taurate) copolymer, and (ammonium acryloyldimethyl taurate / VP) copolymer can provide a fresh, non-sticky feel. In addition, (PEG-240 / decyltetradeceth-20 / HDI) copolymer is an associative thickener represented by the following general formula (II). [ka] [In the formula, R1, R2, and R4 are ethylene groups, R3 is a hexamethylene group, R5 is a 2-dodecyldodecyl group, h=1, m=2, k=120, and n=20.] Commercially available examples include Adekanol GT-700 (manufactured by ADEKA Corporation). Associative thickeners are copolymers with a hydrophilic base as the backbone and hydrophobic parts at the ends. In an aqueous medium, the hydrophobic parts of the copolymer associate with each other, and the hydrophilic parts form loops or bridges, thus exhibiting a thickening effect. Polyacrylamide is a polymer of acrylamide and an acrylic acid-based water-soluble polymer. Specifically, examples include SEPIGEL 305 (manufactured by SEPPIC Corporation). Component (C) may be used individually or in combination. The most preferred component among component (C) is carbomer.

[0027] The amount of component (C) in the present invention is not particularly limited as long as the effects of the present invention are obtained, but it is preferably 0.1 to 3% by mass, and more preferably 0.2 to 2.5% by mass, in the cosmetic composition of the present invention. Within this range, the stability of the ultraviolet scattering agent dispersed in the aqueous phase can be maintained and it can also contribute to reducing the feeling of stiffness. Below 0.1%, stability cannot be maintained, and even if it is added at a concentration of more than 3%, no improvement in effect is observed.

[0028] Component (D), a hydrophobic treated ultraviolet scattering agent used in the present invention (hereinafter sometimes simply referred to as "Component (D)"), is a powder that physically blocks ultraviolet rays by reflection or scattering, and whose surface has been hydrophobic treated. Component (D) is not particularly limited, and any powder commonly used in cosmetics can be used. Specifically, metal oxides such as titanium dioxide, zinc oxide, iron oxide, cerium oxide, and tungsten oxide can be used. In the present invention, titanium dioxide and zinc oxide are preferred. It is preferable to blend one or more types of powders. Examples of hydrophobic treatment agents for ultraviolet scattering agents in the present invention include various compounds that can be used for hydrophobic surface treatment of ultraviolet scattering agents incorporated in cosmetics, such as fatty acids, silicone compounds, fluorine compounds, silane coupling agents, oils, and quaternary ammonium salt compounds. Furthermore, Component (D) is dispersed in the oil phase.

[0029] Component (D) may be appropriately selected to obtain the desired UV protection effect and may be used alone or in combination of two or more. For example, if you want to exhibit excellent UV protection over a wide wavelength range from UVA to UVB, it is preferable to combine at least one metal oxide with high scattering effect in the UVA region and at least one metal oxide with excellent scattering effect in the UVB region. It is also possible to use a UV absorber in addition to a UV scattering agent.

[0030] The amount of component (D) used in the present invention is not particularly limited as long as the effects of the present invention are obtained, In the cosmetic composition of the present invention, 3 to 30% by mass is preferred, and more preferably 5 to 25% by mass. Within this range, a good UV protection effect can be achieved while providing a refreshing, non-sticky feel.

[0031] The component (E) ultraviolet scattering agent used in the present invention (hereinafter sometimes simply referred to as "component (E)") is a powder that physically blocks ultraviolet rays by reflection or scattering. There are no particular restrictions on component (E), and any component commonly used in cosmetics can be used. Specifically, examples include metal oxides, such as titanium dioxide, zinc oxide, iron oxide, cerium oxide, and tungsten oxide. In the present invention, titanium dioxide and zinc oxide are preferred. It is preferable to blend one or more types of powders. Furthermore, there are no particular restrictions on the surface treatment method of the ultraviolet scattering agent, but examples include treatment with silica, aluminum hydroxide, fatty acids, triethoxycaprylylsilane, dimethicone / hydrogen dimethicone, and glycerin. In addition, component (E) is dispersed in the aqueous phase during the manufacture of the formulation.

[0032] The component (E) used in this invention may be appropriately selected to obtain the desired UV protection effect and may be used alone or in combination of two or more. The amount of component (E) is not particularly limited as long as the effects of the present invention can be obtained, but for example, 3 to 20% by mass is preferred, and more preferably 5 to 15% by mass, in the cosmetic composition of the present invention. Within this range, a good UV protection effect can be achieved while stably dispersing in the aqueous phase and achieving a fresh, non-sticky feel.

[0033] The basic compound (F) used in this invention is not particularly limited as long as it is a compound that exhibits basicity when dissolved in water, and various inorganic and organic compounds can be used. One or more basic compounds may be blended.

[0034] Examples of organic compounds include monoethanolamine, triethanolamine, 2-amino-2-methyl-1,3-propanediol, aminomethylpropanol, arginine, and guanidine. Of these, aminomethylpropanol can be used particularly favorably.

[0035] Examples of inorganic compounds include sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, calcium hydroxide, calcium carbonate, and ammonia.

[0036] The amount of component (F) used in the present invention is not particularly limited as long as the effects of the present invention can be obtained. However, excluding the amount used separately for saponification of fatty acids and neutralization of thickeners, if a monovalent base is used for 1 mole of carboxylic acid groups in the blended carboxydecyldimethicone, the carboxylic acid group / monovalent base (molar ratio) is preferably 1 / 0.5 to 1 / 1.5.

[0037] In addition to the essential components mentioned above, the oil-in-water sunscreen cosmetic composition of the present invention may also contain other components commonly used in cosmetics, as needed. For example, pearlescent agents, moisturizers, thickeners other than component (B), water-soluble polymers other than component (C), emulsifiers, fragrances, bactericides, preservatives, antioxidants, pH adjusters, chelating agents, UV absorbers, anti-inflammatory agents, antioxidants, cooling agents, herbal extracts, and vitamins may be added as appropriate. The proportion of these components can be appropriately selected depending on their type and purpose, and they may be used individually or in combination of two or more as appropriate. [Examples]

[0038] The present invention will be further explained below with reference to examples. These examples do not limit the present invention in any way. Furthermore, the amounts of ingredients in the following examples are expressed in mass % unless otherwise specified. Oil-in-water emulsion cosmetics having the compositions listed in Tables 1, 2, and 3 below were prepared by conventional methods, and the following measurements and evaluations were performed.

[0039] [Squeaky feeling when applied] <Evaluation of the smooth, non-squeaky feel during use> In the evaluation test for the non-squeaky feel, 10 expert evaluators assessed the feel of the evaluation sample when applied to the face, assigning scores according to the following evaluation criteria. Based on the average score, a score of 4.0 or higher was marked with ◎, 3.0 or higher and less than 4.0 with ○, 2.0 or higher and less than 3.0 with △, and less than 2.0 with ×. <Evaluation Criteria> 5: I don't feel any creaking at all. 4: I hardly feel any creaking. 3: I can't say either way. 2: I feel a slight creaking sensation. 1: I feel a strong creaking sensation.

[0040] <Evaluation of the refreshing feel> In the evaluation test for the refreshing feel, 10 expert evaluators assessed the sensation of applying the evaluation sample to the face according to the following evaluation criteria. Based on the average score, a score of 4.0 or higher was marked with ◎, 3.0 or higher and less than 4.0 with ○, 2.0 or higher and less than 3.0 with △, and less than 2.0 with ×. <Evaluation Criteria> 5: I find it very juicy. 4: It feels fresh and juicy. 3: I can't say either way. 2: Doesn't feel fresh. 1: I don't feel any moisture at all; I feel dryness.

[0041] [Dispersibility of the state immediately after preparation] The formulation was filled into 30ml transparent PET containers at a rate of 30g, and its condition was visually evaluated by a skilled technician. <Evaluation Criteria> ○: Evenly distributed △: A small portion is not dispersed. ×: Some parts are not distributed.

[0042] [Stability over time] <Evaluation Method> The formulation was filled into a transparent PET container (30 ml) at a rate of 30 g, left to stand at 40°C for one month, and then visually inspected by a skilled technician. <Evaluation Criteria> ◎: No change in state ○: No aggregation has occurred, and although a thin white haze is visible on the surface, it does not affect the quality. △: Although no aggregation has occurred, a white haze frequently appears, which is considered to indicate poor quality. ×: Powder aggregation is observed.

[0043] [Table 1] *1: DOWSIL ES-5800 Formulation Aid (manufactured by Dow Toray Industries, Inc.) *2: San Jerose 60L (manufactured by Daido Chemical Industries, Ltd.) *3: Adekanol GT-700 (manufactured by ADEKA) *4: SEPIGEL 305 (manufactured by SEPPIC) *5: Zinc oxide 96%, Triethoxycaprylylsilane 4% *6: Titanium dioxide 66.7%, aluminum hydroxide 13.3%, stearic acid 20%

[0044] [Table 2]

[0045] [Table 3]

[0046] Referring to Examples 1 to 5 in Table 1, a strong tendency towards a smoother feel and better usability is particularly evident when component (C) is carbomer. In all examples, the stable dispersion of the UV scattering agent and the improvement of the smooth feel are largely due to the combination of carboxydecyldimethicone and hydroxypropylmethylcellulose stearoxy ether. Furthermore, even when other polymers are incorporated, the smooth feel is sufficiently eliminated, which is because the unique properties of carboxydecyldimethicone and component (C) are compatible, allowing the powder to be stably dispersed in both phases without crumbling.

[0047] Table 2, Comparative Example 1 shows that without a dispersant, titanium dioxide cannot be dispersed in the aqueous phase, resulting in a strong squeaky feeling. Furthermore, referring to Comparative Examples 2-4, even when dispersing the UV scattering agent in the aqueous phase using dispersants other than carboxydecyl dimethicone, the dispersibility was poor, and no improvement in usability or stability over time was observed. Table 2, Comparative Examples 5-13 shows that without hydroxypropyl methylcellulose stearoxy ether, no improvement in squeaky feeling was observed. For example, even using similar substances that have not undergone hydrophobic treatment, such as hydroxypropyl methylcellulose or hydroxyethylcellulose, was not possible to eliminate the squeaky feeling of the UV scattering agent dispersed in both phases. Also, because carboxydecyl dimethicone exhibits unique behavior, its compatibility with other components varies; as in Comparative Example 11, viscosity decreases upon mixing, and as in Comparative Example 13, the dispersed UV scattering agent aggregates over time. Without using an appropriate component like hydroxypropyl methylcellulose stearoxy ether, stability and usability deteriorate.

[0048] As shown in Comparative Examples 14-18 of Table 3, polymers other than those specified as component (C) are unsuitable in terms of improving squeaky feel, dispersibility, and stability. This is because, as described in the previous section, there are polymers that are incompatible with carboxydecyldimethicone, causing viscosity reduction or coagulation, making it impossible to stably disperse the UV scattering agent in the aqueous phase. Furthermore, even with components that are not incompatible with carboxydecyldimethicone, as in Comparative Example 17, improvement in squeaky feel was not achieved. Therefore, in order to improve squeaky feel and maintain stability over time, it is necessary to use the polymer listed as component (C).

[0049] Cosmetic formulations were prepared using conventional methods. It was confirmed that the effects of the present invention were achieved in all formulations.

[0050] (1) O / W type sunscreen gel Ingredients Amount (%) Triethoxycaprylylsilane-treated zinc oxide (oil phase dispersion) 13.5 Cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone 1.0 Hydrogenated polyisobutene 3.5 Dimethicone 2.5 Caprylyl Methicone 5.0 Glycerin 3.0 1,3-Butylene glycol 8.0 Xanthan gum 0.1 Sucrose stearate 1.25 Hydrogenated lecithin 1.0 Silica 2.0 Polyglyceryl-2 isostearate 0.5 AMP 0.5 Carbomer 0.2 Hydroxypropyl methylcellulose stearoxy ether 0.05 Stearic acid-treated titanium dioxide (aqueous phase dispersion) 6.0 Carboxydecyldimethicone 1.0 Preservative (appropriate amount) water residue Total 100

[0051] (2) O / W type sunscreen cream Ingredients Amount (%) Stearic acid-treated zinc oxide (oil phase dispersion) 13.5 Polyglyceryl-3 polydimethylsiloxyethyl dimethicone 3.0 Dimethicone 1.5 Caprylyl methicone 8.0 Ethylhexyl Methoxycinnamate 3.0 Diethylamino hydroxybenzoyl hexyl benzoate 0.5 Bis-ethylhexyloxyphenol methoxyphenyl triazine 0.5 Polyglyceryl-3 disiloxane dimethicone 1.0 1,3-Butylene glycol 8.0 Xanthan gum 0.1 Polyglyceryl-10 stearate 2.0 Sorbet-60 Tetraoleate 1.0 Silica 2.0 Polyglyceryl-2 isostearate 0.5 AMP 0.5 Carbomer 0.2 Hydroxypropyl methylcellulose stearoxy ether 0.05 Nicotinamide 3.0 Cetyl phosphate K 0.1 Polyacrylamide 0.5 Hydrogenated rapeseed alcohol 1.5 Ceramide 3 0.05 Ubiquinone 0.001 Comfrey leaf extract 0.01 Ascorbyl glucoside 0.1 Silica-treated titanium oxide (aqueous phase dispersion) 6.0 Carboxydecyldimethicone 1.0 Cellulose nanofiber 0.1 30% dilauroyl glutamate lysine sodium aqueous solution 0.1 Preservative (appropriate amount) water residue Total 100

[0052] (3) O / W type sunscreen lotion Ingredients Amount (%) Isostearate-treated zinc oxide (oil phase dispersion) 13.5 Cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone 1.0 Hydrogenated polyisobutene 2.5 Dimethicone 2.5 Caprylyl Methicone 5.0 Glycerin 3.0 1,3-Butylene glycol 9.0 Xanthan gum 0.1 PEG-100 Hydrogenated Castor Oil 1.5 Glycosyltrehalose 0.5 Hydrolyzed hydrogenated starch 0.3 Silica 2.0 AMP 0.25 (Acryloyldimethyltaurate Ammonium / VP) Copolymer 0.3 Hydroxypropyl methylcellulose stearoxy ether 0.05 (Sodium acrylate / sodium acryloyldimethyl taurate) copolymer 0.2 Hydrogen dimethicone-treated titanium dioxide (aqueous phase dispersion) 6.0 Carboxydecyldimethicone 1.0 Tabebuia impetiginosa bark extract 0.01 Sodium hyaluronate 0.1 Preservative (appropriate amount) water residue Total 100

Claims

[Claim 1] The following components (A) to (F) (A): Carboxydecyldimethicone (B): Hydroxypropyl methylcellulose stearoxy ether (C): One or more selected from carbomer, polymers having 2-acrylamido-2-methylsulfonic acid and / or salts thereof as constituent components, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and polyacrylamide. (D): Hydrophobized UV scattering agent (E): UV scattering agent (F): Basic compound An oil-in-water sunscreen cosmetic characterized by containing the following, wherein component (D) is dispersed in the oil phase and component (E) is dispersed in the aqueous phase.

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