Water-in-oil emulsified cosmetic

Abstract

To provide a water-in-oil emulsified cosmetic that maintains sufficient UV protection effect without containing a UV absorber, while preventing whitening, eliminating squeaky texture, and offering a refreshing application feel.SOLUTION: A water-in-oil emulsified cosmetic comprises: (A) a UV scattering agent comprising at least one of hydrophobically treated titanium oxide and zinc oxide, (B) at least 0.4 mass% of a surfactant having an HLB of 11 or more, (C) polyhydroxystearic acid, (D) sorbitan sesquiisostearate, and (E) a water-soluble thickener.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a water-in-oil emulsion cosmetic. [Background technology]

[0002] Emulsion cosmetics are generally classified into oil-in-water and water-in-oil types. Oil-in-water emulsion cosmetics are moist and refreshing to use, but have the problem of poor water resistance and being easily washed away by sweat, resulting in poor makeup wear. Water-in-oil emulsion cosmetics have excellent water resistance and are therefore used in sunscreen cosmetics, makeup cosmetics, makeup bases, and the like. However, because they are in the form of water dispersed in oil, they can cause stickiness due to the oil, and improvements in this regard are desired.

[0003] On the other hand, organic ultraviolet absorbers and ultraviolet scattering agents made of fine metal oxide particles are used in sunscreen cosmetics as compounds with ultraviolet protection effects. Organic ultraviolet absorbers have been widely used because they have high handling properties, allowing them to be easily dispersed in an oil phase or an aqueous phase, and because of their high transparency, and because sunscreen cosmetics containing organic ultraviolet absorbers can be applied to the skin without causing a white cast and can achieve high ultraviolet protection effects. However, there are concerns about skin irritation, and in recent years, their use has tended to be avoided. Therefore, a sunscreen cosmetic formulation containing only an ultraviolet scattering agent without using an organic ultraviolet absorber is desired, but in order to obtain a high ultraviolet protection function, it is necessary to incorporate a large amount of an ultraviolet scattering agent, which deteriorates usability such as powdery or squeaky feeling of the fine powder when applied to the skin, and a white, unnatural finish is observed. In addition, to disperse fine metal oxide particles in oily components in water-in-oil emulsion cosmetics, lipophilic surfactants with low HLB (Hydrophilic-Lipophilic Balance) are usually used as emulsifiers, but as mentioned above, water-in-oil emulsion cosmetics emulsified with lipophilic surfactants have a makeup-lasting effect due to high water resistance, but they cause oil stickiness and do not have the freshness of oil-in-water emulsion cosmetics. In this background, water-in-oil sunscreen cosmetics containing fine metal oxide particles and lipophilic surfactants have high ultraviolet shielding effect and excellent makeup-lasting effect, but have problems such as squeaky feeling, powdery feeling, and white cast.

[0004] In order to solve such problems, cosmetics containing a hydrophilic surfactant with a high HLB have been proposed. For example, Patent Document 1 discloses a powder-containing water-in-oil emulsion cosmetic containing titanium oxide, zinc oxide, and a hydrophilic nonionic surfactant, polyoxinethylene (20) oleyl alcohol ether. Furthermore, Patent Document 2 discloses a water-in-oil type emulsion cosmetic with high water content that contains fine particle titanium oxide, fine particle zinc oxide, and decaglyceryl monolaurate having an HLB value of 13 or more. Furthermore, Patent Document 3 discloses a water-in-oil emulsion composition containing hydrophobically treated zinc oxide and polyoxin ethylene hydrogenated castor oil, which is a hydrophilic nonionic surfactant. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-306410 A [Patent Document 2] JP 2006-321769 A [Patent Document 3] JP 2008-208045 A Summary of the Invention [Problem to be solved by the invention]

[0006] The water-in-oil emulsion cosmetics containing metal oxide powder described in the above patent documents still have room for improvement in terms of achieving both a good feel when used, a finish that does not cast a white cast, and a high ultraviolet protection effect. Therefore, the present invention has been made in consideration of the above problems, and has an object to provide a water-in-oil emulsion cosmetic that maintains a sufficient ultraviolet protection effect without containing an ultraviolet absorber, does not leave a white cast, is free of a squeaky feeling, and has an excellent, fresh feel when used. [Means for solving the problem]

[0007] As a result of intensive research into solving the above-mentioned problems, the present inventors discovered that the above-mentioned problems can be solved while maintaining the water-in-oil emulsion cosmetic properties such as water resistance by adding a predetermined amount of a hydrophilic surfactant with a high HLB to a water-in-oil emulsion cosmetic containing a high amount of fine particle metal oxide, and thus arrived at the present invention.

[0008] That is, the present invention is a water-in-oil emulsion cosmetic comprising (A) an ultraviolet scattering agent consisting of at least one of hydrophobically treated titanium oxide and zinc oxide, (B) 0.4 mass% or more of an active agent having an HLB value of 11 or more, (C) polyhydroxystearic acid, (D) sorbitan sesquiisostearate, and (E) a water-soluble thickener.

[0009] The content of the (A) ultraviolet scattering agent is preferably from 10% by mass to 45% by mass.

[0010] The content of the (B) activator having an HLB value of 11 or more is preferably 0.4% by mass or more and 6.5% by mass or less.

[0011] The content of (C) polyhydroxystearic acid is preferably from 0.1% by mass to 2.0% by mass. Effect of the Invention

[0012] According to the present invention, it is possible to provide a water-in-oil emulsion cosmetic which maintains a sufficient ultraviolet protection effect without containing an ultraviolet absorber, does not leave a white cast, is free of a squeaky feeling, and has an excellent, fresh feel when used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described in detail.

[0014] [Water-in-oil emulsion cosmetics] The water-in-oil emulsion cosmetic of the present invention is a water-in-oil emulsion cosmetic comprising (A) an ultraviolet scattering agent consisting of at least one of hydrophobically treated titanium oxide and zinc oxide, (B) 0.4 mass% or more of an active agent having an HLB value of 11 or more, (C) polyhydroxystearic acid, (D) sorbitan sesquiisostearate, and (E) a water-soluble thickener.

[0015] (A) UV scattering agent The ultraviolet scattering agent has the function of preventing the ultraviolet rays from penetrating into the skin by scattering the ultraviolet rays irradiated onto the skin to which the water-in-oil emulsion sunscreen cosmetic is applied through diffuse reflection. In the present invention, the material is made of at least one of titanium oxide and zinc oxide that has been subjected to a hydrophobic treatment, and these can be used alone or in combination depending on the desired ultraviolet protection effect. The average primary particle size of the hydrophobized titanium oxide and zinc oxide is preferably 100 nm or less. The average particle size can be measured by image analysis of images taken with a scanning electron microscope or a transmission electron microscope and by a laser diffraction method.

[0016] Methods for hydrophobizing the surface of titanium oxide and zinc oxide include silicone treatment with triethoxycaprylylsilane, dimethicone, etc.; dextrin fatty acid treatment with dextrin palmitate, etc.; distearyldimethylammonium chloride treatment; fluorine treatment with perfluoroalkyl phosphate esters, perfluoroalcohol, etc.; amino acid treatment with N-acylglutamic acid, etc.; lecithin treatment; metal soap treatment such as aluminum stearate treatment, magnesium isostearate treatment, etc.; fatty acid treatment with isostearic acid, stearic acid, etc.; inorganic compound treatment; and alkyl phosphate treatment.

[0017] The (A) ultraviolet scattering agent is preferably 10% by mass or more and 45% by mass or less, more preferably 15% by mass or more and 40% by mass or less, and even more preferably 20% by mass or more and 35% by mass or less, based on the total amount of the cosmetic. If it is 10% by mass or more, a high ultraviolet protection effect can be expected. Specifically, a high ultraviolet protection effect means SPF20 or more and PA++ or more, more preferably SPF30 or more and PA+++ or more, and even more preferably SPF40 or more and PA++++ or more.

[0018] The water-in-oil emulsion cosmetic of the present invention does not contain an ultraviolet absorbing agent due to concerns about skin irritation and stickiness. The ultraviolet absorbers are water-soluble and oil-soluble ultraviolet absorbers that are usually incorporated into sunscreen cosmetics, such as benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranil derivatives, imidazoline derivatives, benzalmalonate derivatives, and 4,4-diarylbutadiene derivatives.

[0019] (B) Surfactants with an HLB value of 11 or more The water-in-oil emulsion cosmetic of the present invention contains (B) a surfactant with an HLB value of 11 or more. By having an HLB value of 11 or more, the oily component and the aqueous component can be emulsified well. The HLB value is preferably 12 or more, and more preferably 13 or more.

[0020] (B) Examples of surfactants with an HLB value of 11 or more include glycerin or polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyoxyethylene (POE) sorbitan fatty acid esters, POE sorbit fatty acid esters, POE glycerin fatty acid esters, POE fatty acid esters, POE alkyl ethers, POE alkyl phenyl ethers, POE-polyoxypropylene (POP) alkyl ethers, POE castor oil or POE hydrogenated castor oil, alkanolamides, POE propylene glycol fatty acid esters, and the like. Among these, fatty acid polyglyceryl and polyoxyethylene (POE) sorbitan fatty acid esters are particularly preferred. For example, fatty acid polyglyceryl includes polyglyceryl-10 isostearate, polyglyceryl-10 myristate, polyglyceryl-10 laurate, and PEG-20 glyceryl isostearate. Polyoxyethylene (POE) sorbitan fatty acid esters include polysorbate 80. The surfactant (B) having an HLB of 11 or more in the present invention can be selected from the above and used alone or in combination of two or more kinds, and when two or more kinds are combined, the ratio may be arbitrary.

[0021] The (B) surfactant with an HLB of 11 or more is contained in an amount of 0.4% by mass or more relative to the total amount of the water-in-oil emulsion cosmetic. By containing 0.4% by mass or more of the (B) surfactant with an HLB of 11 or more relative to the total amount of the water-in-oil emulsion cosmetic, the blending stability of the (A) UV scattering agent in the water-in-oil emulsion cosmetic can be improved. The (B) surfactant with an HLB of 11 or more is preferably 0.4% by mass or more and 6.5% by mass or less, more preferably 0.9% by mass or more and 6.0% by mass or less, and even more preferably 1.4% by mass or more and 5.5% by mass or less, relative to the total amount of the water-in-oil emulsion cosmetic.

[0022] (C) Polyhydroxystearic acid The water-in-oil emulsion cosmetic of the present invention contains (C) polyhydroxystearic acid. (C) Polyhydroxystearic acid constitutes the outer phase (oil phase) of the water-in-oil emulsion cosmetic together with (A) UV scattering agent.

[0023] The blending amount of (C) polyhydroxystearic acid is preferably 0.1% by mass or more and 2.0% by mass or less, more preferably 0.15% by mass or more and 1.5% by mass or less, and even more preferably 0.2% by mass or more and 1.0% by mass or less, based on the total amount of the water-in-oil emulsion cosmetic. There are no particular limitations on the polyhydroxystearic acid as long as it is one that can be used in ordinary cosmetics, and an example of a commercially available product is HS-6C (manufactured by Nisshin Oillio Group, Ltd.).

[0024] (D) Sorbitan sesquiisostearate The water-in-oil emulsion cosmetic of the present invention contains sorbitan sesquiisostearate. The blending amount of (D) sorbitan sesquiisostearate is preferably 0.2% by mass or more and 2.5% by mass or less, more preferably 0.3% by mass or more and 2.0% by mass or less, and even more preferably 0.4% by mass or more and 1.5% by mass or less, based on the total amount of the water-in-oil emulsion cosmetic. By having the content of (D) sorbitan sesquiisostearate in the above range, it is possible to improve the blending stability of (A) the ultraviolet scattering agent in the water-in-oil emulsion cosmetic.

[0025] (E) Water-soluble thickener In the water-in-oil emulsion cosmetic of the present invention, the (E) water-soluble thickener disperses in the internal phase (aqueous phase) and thickens the internal phase. (E) Examples of natural water-soluble thickeners include plant-based polymers such as gum arabic, tragacanth, galactan, carob gum, guar gum, karaya gum, carrageenan, xanthan gum, pectin, agar, quince seed, and algae colloid (brown algae extract); microbial polymers such as sclerotium gum and sodium hyaluronate; animal polymers such as collagen, casein, albumin, and gelatin; and starch-based polymers such as starch (rice, corn, potato, and wheat), carboxymethyl starch, and methylhydroxypropyl starch.

[0026] Examples of semi-synthetic water-soluble thickeners include cellulose-based polymers such as methyl cellulose, nitrocellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, and cellulose powder; and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0027] Further, synthetic water-soluble thickeners include vinyl polymers such as polyvinyl methyl ether and carboxyvinyl polymers, polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, acrylic polymers such as polyethyl acrylate and polyacrylamide, inorganic water-soluble polymers such as polyethyleneimine, cationic polymers, bentonite, magnesium aluminum silicate, laponite, and hectorite, PEG-240 / decyltetradeceth-20 / hexamethylene diisocyanate copolymers, (dimethylacrylamide / Na acryloyldimethyltaurate) crosspolymers, (Na acrylate / acryloyldimethyltaurate) copolymers, (alkyl acrylate / steareth-20 methacrylate) copolymers, (ammonium acryloyldimethyltaurate / VP) copolymers, and polyacrylate crosspolymer-6.

[0028] The water-soluble thickener (E) in the present invention may be any one selected from the above, or may be used in combination of two or more kinds, and when two or more kinds are combined, the ratio may be arbitrary. From the viewpoint of obtaining a fresh feeling of use, one or more kinds selected from natural water-soluble thickeners and polyacrylate crosspolymers are preferable, and polyacrylate crosspolymer-6 is particularly preferable.

[0029] The blending amount of the (E) water-soluble thickener is preferably from 0.2 to 3.5% by mass, more preferably from 0.4 to 2.5% by mass, and even more preferably from 0.6 to 1.5% by mass, based on the total amount of the water-in-oil emulsion cosmetic.

[0030] (F) Dispersants other than (C) and (D) (hereinafter referred to as (F) dispersants) (F) Dispersants include liquid higher fatty acids and polyglycerol fatty acid esters. Examples of liquid higher fatty acids include isostearic acid, oleic acid, linoleic acid, and linolenic acid. Among these, isostearic acid is more preferable. Examples of polyhydroxy fatty acid esters include polyglyceryl-2 triisostearate and polyglyceryl-2 diisostearate. The dispersant (F) in the present invention may be any one selected from the above or may be used in combination of two or more kinds, and when two or more kinds are combined, the ratio may be arbitrary. The blending amount of the dispersant (F) is preferably 2 mass% or less, more preferably 0.5 mass% or more and 1.5 mass% or less, and even more preferably 0.8 mass% or more and 1.2 mass% or less, based on the total amount of the water-in-oil emulsion cosmetic. By ensuring that the blending amount of the dispersing agent (F) is within the above range, the dispersibility of the ultraviolet scattering agent (A) can be improved, and the ultraviolet shielding effect can be further enhanced.

[0031] (G) Aqueous component (G) The aqueous component may include water and water-soluble components, and examples of the water-soluble components include alcohols such as ethanol, isopropyl alcohol, propylene glycol (propanediol), dipropylene glycol, 1,3-butylene glycol, 1,2-pentanediol (pentylene glycol), glycerin, diglycerin, polyglycerin, etc. One or more of these aqueous components may be selected and used as necessary. In addition to the above, optional components that can be contained in the aqueous phase include, for example, moisturizers, stabilizers, various water-soluble drugs, and the like.

[0032] The total aqueous components in the water-in-oil emulsion cosmetic of the present invention are preferably contained in an amount of 25% by mass or more, more preferably 27% by mass or more, and even more preferably 30% by mass or more, based on the total mass of the water-in-oil emulsion cosmetic. By containing the total aqueous components in the above range, the cosmetic spreads well when applied to the skin, and has a good feel when used.

[0033] (Other oils) Examples of oils other than those mentioned above include hydrocarbon oils such as isododecane, chain silicone oils such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, methylhydrogenpolysiloxane, cyclopentasiloxane, methyltrimethicone, and caprylyl methicone, ester oils, higher alcohols having 12 to 22 carbon atoms, and fatty acids having 12 to 22 carbon atoms. These can be used alone or in combination of two or more kinds.

[0034] Examples of the hydrocarbon oil include liquid paraffin, liquid isoparaffin such as hydrogenated polyisobutene, heavy liquid isoparaffin, liquid ozokerite, squalane, squalene, and volatile hydrocarbon oils (such as isododecane and isohexadecane).

[0035] Examples of ester oils include isononyl isononanoate, isotridecyl isononanoate, octyldodecyl myristate, isopropyl myristate, isocetyl myristate, alkyl benzoates (C12 to C15) and the like, monoester oils such as isopropyl palmitate, ethylhexyl palmitate, and 2-hexyldecyl palmitate, diester oils such as di-2-ethylhexyl sebacate, diisopropyl sebacate, diethylene glycol dicaprate, neopentyl glycol dicaprate, neopentyl glycol di-2-ethylhexanoate, diisostearyl malate, and dicaprylyl carbonate, and triester oils such as glyceryl tri-2-ethylhexanoate and tri(caprylic acid / capric acid)glyceryl.

[0036] Examples of higher alcohols having 12 to 22 carbon atoms include oleyl alcohol, dodecanol, isostearyl alcohol, and octyldodecanol. Examples of fatty acids having 12 to 22 carbon atoms include oleic acid, isostearic acid, linoleic acid, and linolenic acid.

[0037] The content of the total oily components in the water-in-oil emulsion cosmetic of the present invention is 10% by mass or more and 80% by mass or less, preferably 20% by mass or more and 70% by mass or less, more preferably 30% by mass or more and 60% by mass or less, based on the total amount of the water-in-oil emulsion cosmetic. When the content of the oily components is within the above range, a good feeling of use as a cosmetic can be obtained.

[0038] (Other powder ingredients) The powder component may further include a powder component other than the above (A). Examples of such a powder component include inorganic powders (e.g., talc, kaolin, mica, sericite, white mica, gold mica, synthetic mica, red mica, black mica, mica, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap, organic powder, inorganic pigment, pearl pigment, metal powder pigment, organic pigment such as zirconium, barium or aluminum lake, natural dye, boron nitride, borosilicate (Ca / Al), bismuth oxychloride, starch octenyl succinate Al, and spherical powder.

[0039] (Other Ingredients) The water-in-oil emulsion cosmetic of the present invention may contain, in addition to the above, antioxidant auxiliaries, preservatives, whitening agents, blood circulation promoters, various extracts, activators, antiseborrheic agents, and the like.

[0040] The water-in-oil emulsion cosmetic of the present invention can be used in basic sunscreen cosmetics such as lotions, creams, and serums, and in sunscreen makeup cosmetics such as makeup bases and foundations. EXAMPLES

[0041] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. Furthermore, the blending amounts in the following examples are expressed in mass % unless otherwise specified.

[0042] [Examples 1 to 19, Comparative Examples 1 to 8] Among the ingredients listed in Table 1, oily ingredients including ingredients (C), (D), and (F) were thoroughly mixed using a disperser, and powdery ingredients including ingredient (A) were added and dispersed therein, and water-soluble ingredients including ingredients (B) and (E) were separately added and stirred to produce a water-in-oil emulsion cosmetic (sunscreen cosmetic). The numerical values ​​in the table are in mass %.

[0043] [evaluation] The following evaluations were carried out for the above-mentioned Examples and Comparative Examples. The evaluation results are shown in Table 1.

[0044] <Evaluation of sensation after application: No powdery or squeaky feeling> The samples of the water-in-oil emulsion cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists, and the degree of feel on the skin when applied was evaluated according to the following score criteria. (Score criteria) 5: No powdery feeling or squeaking 4: Not powdery or squeaky 3: Normal 2: Slightly powdery and squeaky 1: Powdery and squeaky Next, the scores of the 10 panelists were averaged and the feel after application was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0045] <Evaluation of sensation after application: freshness (freshness, non-stickiness)> The samples of the water-in-oil emulsion cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists, and the degree of feel on the skin when applied was evaluated according to the following score criteria. (Score criteria) 5. Has a refreshing, gel-like feel and is not sticky 4: Has a slightly moist, gel-like feel and is not sticky 3: Moist and slightly sticky 2: A little lacking in moisture and a little sticky 1: Lacks moisture and is sticky Next, the scores of 10 panelists from our company were averaged and the feeling after application was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0046] <Evaluation of sensation after application: No white cast> The samples of the water-in-oil emulsion cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists, and the degree of feel on the skin when applied was evaluated according to the following score criteria. (Score criteria) 5. No white cast 4: Not white cast 3: Normal 2: Slightly whitish 1: White cast Next, the scores of the 10 panelists were averaged and the feel after application was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0047] <Evaluation of usability after application: Ease of spreading, smooth application> The water-in-oil emulsion cosmetic samples of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists of the Company, and the degree of sensation on the skin when applied was evaluated according to the following score criteria. (Score criteria) 5: Good stretch 4: Slightly good stretch 3: Normal 2: Slightly poor stretch 1: Poor stretch Next, the scores of the 10 panelists were averaged and the feel after application was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0048] <Property stability evaluation: Emulsion stability> The property stability of the water-in-oil emulsion cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 was evaluated by three panelists by visually observing the appearance and observing the state of emulsion particles using an optical microscope, according to the following criteria. <Score criteria> 5: The appearance is uniform, and no coalescence of emulsion particles is observed 4: The appearance is uniform, but some coalescence of emulsion particles is observed. 3: Appearance is slightly uneven, and emulsified particles are visible. 2: The appearance is uneven and the emulsion particles are coalescing. 1: Separated, with coalescence of emulsion particles visible The scores of the three people were averaged and the feeling after application was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0049] [Table 1]

[0050] [Table 2]

[0051] As shown in Tables 1 and 2, the water-in-oil emulsion cosmetics of the present invention of Examples 1 to 19 were found to be free of powdery or squeaky feeling and had excellent freshness. 2 The cosmetics of Examples 1 to 19 were measured using a UV2000S analyzer manufactured by Labsphere, and all of the cosmetics described in Examples 1 to 19 had an SPF of 30 or higher and a PA+++ or higher, confirming the achievement of both a high UV protection effect and the above-mentioned effects.

[0052] On the other hand, Comparative Example 1 was evaluated to be equivalent to the Examples, but when measured with an SPF analyzer, it was less than SPF10, PA+. This is because the amount of component (A) was small, and sufficient UV protection function, which is the subject of the present invention, was not obtained. In addition, Comparative Examples 2 to 8 were inferior in any of the effects compared to the products of the present invention.

[0053] Below are examples of formulations of the water-in-oil emulsion cosmetic of the present invention, but the present invention is not limited to these. All of the water-in-oil emulsion cosmetics obtained by the following formulations maintained a high UV protection effect, did not leave a white cast, did not feel squeaky, and had a fresh and moist feel when used.

[0054] [Formulation example 1] Makeup base (1) Xanthan gum Component (E) 2.0 (mass%) (2) Polyacrylate Crosspolymer-6 Component (E) 0.8 (3) Propanediol 3.5 (4) BG 3.0 (5) Glycerin 0.5 (6) Polyglyceryl-10 isostearate component (B) 0.8 (7) Polysorbate 80 component (B) 0.6 (8) PEG-20 glyceryl isostearate (Component (B)) 1.0 (9) Preservatives (appropriate amount) (10) Caprylic / capric triglyceride 5.0 (11) Squalane 15.0 (12) Dicaprylyl carbonate 3.0 (13) Phytosteryl / Octyldodecyl Lauroyl Glutamate 0.1 (14) Isostearic acid component (F) 0.6 (15) Polyglyceryl-2 triisostearate (F) 0.5 (16) Sorbitan sesquiisostearate (Component (D)) 0.5 (17) Polyhydroxystearic acid component (C) 0.5 (18) Disteardimonium hectorite 0.1 (19) Iron oxide 0.05 (20) Mica 0.5 (21) Pearl pigment 3.0 (22) Silica 1.0 (23) Tocopherol 0.05 (24)Fragrance, essential oil 0.1 (25) Hydrophobically treated zinc oxide particles Component (A) 20.0 (26) Hydrophobically treated titanium dioxide fine particles Component (A) 6.0 (27) Purified water remainder

[0055] [Formulation Example 2] Sunscreen cosmetics (1) Xanthan gum Component (E) 0.25 (mass%) (2) Polyacrylate Crosspolymer-6 Component (E) 1.0 (3) Pentylene glycol 1.5 (4) BG 3.0 (5) Glycerin 0.5 (6) Sodium hyaluronate 0.01 (7) Polyglyceryl-10 isostearate component (B) 0.25 (8) Polysorbate 80 component (B) 0.6 (9) PEG-20 glyceryl isostearate (Component (B)) 2.0 (10) Preservatives (appropriate amount) (11) Squalane 12.0 (12) Alkyl benzoate (C12-15) 3.0 (13) Hydrogenated polydecene 4.0 (14) Isotridecyl isononanoate 4.0 (15) Dimethicone 6.0 (16) Isostearic acid component (F) 0.5 (17) Polyglyceryl triisostearate-2 Component (F) 0.5 (18) Sorbitan sesquiisostearate (Component (D)) 1.0 (19) Polyhydroxystearic acid component (C) 0.4 (20) Disteardimonium hectorite 0.1 (21) Silica 1.0 (22) Tocopherol 0.05 (23) Hydrophobically treated zinc oxide fine particles Component (A) 22.0 (24) Hydrophobically treated titanium dioxide fine particles Component (A) 6.0 (25) Purified water remainder

[0056] [Formulation Example 3] Sunscreen cosmetics (1) Xanthan gum Component (E) 0.2 (mass%) (2) Sclerotium gum ingredient (E) 0.2 (3) Polyacrylate Crosspolymer-6 Component (E) 0.5 (4) DPG 3.0 (5) Pentylene glycol 2.0 (6) BG 5.0 (7) Sorbitol 1.0 (8) Sodium hyaluronate 0.01 (9) Polysorbate 80 component (B) 0.6 (10) PEG-20 glyceryl isostearate (Component (B)) 2.0 (11) Preservatives (appropriate amount) (12) Squalane 5.0 (13) Alkyl benzoate (C12-15) 3.0 (14) Isotridecyl isononanoate 4.0 (15) Caprylyl Methicone 2.0 (16) PEG-11 methyl ether dimethicone 1.0 (17) Methyl trimethicone 3.0 (18) Dimethicone 2.0 (19) Isostearic acid component (F) 0.1 (20) Polyglyceryl-2 triisostearate component (F) 0.5 (21) Sorbitan sesquiisostearate (Component (D)) 1.0 (22) Polyhydroxystearic acid component (C) 0.5 (23) Disteardimonium hectorite 0.1 (24) Silica 2.0 (25) Tocopherol 0.05 (26) Hydrophobically treated zinc oxide fine particles Component (A) 20.0 (27) Hydrophobically treated titanium dioxide fine particles Component (A) 6.0 (28) Purified water remainder

[0057] [Formulation Example 4] Foundation (1) Xanthan gum Component (E) 0.2 (mass%) (2) Polyacrylate Crosspolymer-6 Component (E) 0.8 (3) Pentylene glycol 2.0 (4) BG 5.0 (5) Glycerin 2.0 (6) Polyglyceryl-10 laurate component (B) 1.0 (7) PEG-60 glyceryl isostearate (Component (B)) 1.5 (8) Preservatives (appropriate amount) (9) Neopentyl glycol diethylhexanoate 5.0 (10) Dimer dilinoleic acid (phytosteryl / isostearyl / Cetyl / Stearyl / Behenyl) 0.1 (11) Diethylhexyl succinate 5.0 (12) Caprylyl Methicone 5.0 (13) Diphenylsiloxyphenyl trimethicone 3.0 (14) Dimethicone 3.0 (15) Isostearic acid component (F) 0.5 (16) Polyglyceryl-2 diisostearate component (F) 0.5 (17) Sorbitan sesquiisostearate (Component (D)) 1.0 (18) Polyhydroxystearic acid component (C) 0.4 (19) Disteardimonium hectorite 0.2 (20) Iron oxide 2.0 (21) Mica 1.0 (22) Titanium dioxide 5.0 (23) Silica 1.0 (24) Tocopherol 0.05 (25) Hydrophobically treated zinc oxide particles Component (A) 16.0 (26) Hydrophobically treated titanium dioxide fine particles Component (A) 4.0 (27) Purified water remainder

[0058] Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims.

Claims

1. (A) an ultraviolet scattering agent comprising at least one of hydrophobically treated titanium oxide and zinc oxide; (B) 0.4% by mass or more of a surfactant having an HLB of 11 or more, (C) polyhydroxystearic acid, (D) sorbitan sesquiisostearate, and (E) Water-soluble thickener A water-in-oil emulsion cosmetic comprising:

2. 2. The water-in-oil emulsion cosmetic according to claim 1, wherein the content of the ultraviolet scattering agent (A) is from 10% by mass to 45% by mass.

3. 2. The water-in-oil emulsion cosmetic according to claim 1, wherein the content of the surfactant (B) having an HLB of 11 or more is 0.4% by mass or more and 6.5% by mass or less.

4. 2. The water-in-oil emulsion cosmetic according to claim 1, wherein the content of the polyhydroxystearic acid (C) is from 0.1% by mass to 2.0% by mass.

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