Water-in-oil emulsion 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 Art

[0002] Emulsion cosmetics generally include oil-in-water type and water-in-oil type. Oil-in-water emulsion cosmetics are fresh and have a refreshing feeling of use, but they have a problem of poor water resistance and are easily washed away by sweat, resulting in poor makeup retention. Water-in-oil emulsion cosmetics are excellent in water resistance and are therefore used in sunscreen cosmetics, makeup cosmetics, makeup bases, etc. However, since they are in a form in which water is dispersed in oil, stickiness due to oil components occurs, and improvement thereof is desired.

[0003] On the other hand, as compounds having an ultraviolet ray protection effect, organic ultraviolet ray absorbers and ultraviolet ray scattering agents composed of fine particle metal oxides are used in sunscreen cosmetics. Organic ultraviolet ray absorbers have been widely used because they can be easily dispersed in the oil phase or the water phase, have high handleability, and can achieve a high ultraviolet ray protection effect without causing white turbidity even when a sunscreen cosmetic containing an organic ultraviolet ray absorber is applied to the skin. However, there are concerns about skin irritation, and in recent years, their use has tended to be avoided. Therefore, there is a demand for a sunscreen cosmetic containing only an ultraviolet scattering agent without using an organic ultraviolet absorber. However, to obtain a high ultraviolet protection function, it is necessary to incorporate a large amount of the ultraviolet scattering agent. When applied to the skin, it results in deterioration of usability such as a powdery feeling and a scratching sensation of the fine particle powder, and an unnatural white finish. Further, to disperse fine particle metal oxides in the oily component of an oil-in-water type emulsified cosmetic, an emulsifier with a low HLB (Hydrophilic-Lipophilic Balance), i.e., a lipophilic activator, is usually used. As described above, although the oil-in-water type emulsified cosmetic emulsified with a lipophilic activator has a makeup retention effect due to high water resistance, it has greasiness of the oil component and does not have the fresh feeling like that of a water-in-oil type emulsified cosmetic. Against such a background, an oil-in-water type sunscreen cosmetic containing fine particle metal oxides and a lipophilic activator has a high ultraviolet shielding effect and excellent makeup retention, but has problems such as a scratching sensation, a powdery feeling, and white streaks.

[0004] Therefore, in order to solve such problems, cosmetics containing a hydrophilic activator with a high HLB have been proposed. For example, Patent Document 1 discloses a powder-containing oil-in-water type emulsified cosmetic containing titanium oxide, zinc oxide, and polyoxyethylene (20) oleyl alcohol, which is a hydrophilic nonionic surfactant. Further, Patent Document 2 discloses a high water-containing oil-in-water type emulsified cosmetic containing fine particle titanium oxide, fine particle zinc oxide, and decaglyceryl monolaurate with an HLB of 13 or more. Furthermore, Patent Document 3 discloses an oil-in-water type emulsified composition containing hydrophobically treated zinc oxide and polyoxyethylene hydrogenated castor oil, which is a hydrophilic nonionic surfactant.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0006] Regarding the water-in-oil emulsion cosmetic containing metal oxide powder in the above patent document, there is still room for improvement in achieving both a good feel in use and a non-white-cast finish, and a high ultraviolet ray protection effect. Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a water-in-oil emulsion cosmetic that maintains a sufficient ultraviolet ray protection effect without containing an ultraviolet absorber, does not show white-cast, has no squeaking feeling, and has an excellent fresh feel in use.

MEANS FOR SOLVING THE PROBLEMS

[0007] As a result of intensive studies to solve the above problems, the present inventor has found that by incorporating a predetermined amount of a hydrophilic surfactant having a high HLB into a water-in-oil emulsion cosmetic containing fine particle metal oxide in a high content, the above problems can be solved while maintaining water resistance and the like, which are characteristics of water-in-oil emulsion cosmetics, and thus the present invention has been achieved.

[0008] That is, the present invention is a water-in-oil emulsion cosmetic containing (A) an ultraviolet ray scattering agent composed of at least one of hydrophobized titanium oxide and zinc oxide, (B) 0.4 mass% or more of a surfactant having an HLB of 11 or more, (C) polyhydroxystearic acid, (D) sorbitan sesquioleate, and (E) a water-soluble thickener.

[0009] (A) The content of the ultraviolet ray scattering agent is preferably 10 mass% or more and 45 mass% or less.

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

[0011] (C) The content of polyhydroxystearic acid is preferably 0.1 mass% or more and 2.0 mass% or less. [Advantages of the Invention]

[0012] According to the present invention, it is possible to provide an oil-in-water type emulsified cosmetic that maintains a sufficient ultraviolet ray protection effect without containing an ultraviolet absorber, does not turn white, has no squeaking feeling, and has an excellent fresh feeling in use. [Modes for Carrying Out the Invention]

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

[0014] [Oil-in-water type emulsified cosmetic] The oil-in-water type emulsified cosmetic of the present invention is an oil-in-water type emulsified cosmetic containing (A) an ultraviolet ray scattering agent composed of at least one of hydrophobized titanium oxide and zinc oxide, (B) an activator having an HLB of 11 or more in an amount of 0.4% by mass or more, (C) polyhydroxystearic acid, (D) sorbitan sesquisoisostearate, and (E) a water-soluble thickener.

[0015] (A) Ultraviolet ray scattering agent The ultraviolet ray scattering agent has a function of preventing ultraviolet rays from entering the skin by diffusely reflecting and scattering the ultraviolet rays irradiated on the skin coated with the oil-in-water type emulsified sunscreen cosmetic. In the present invention, it is composed of at least one of hydrophobized titanium oxide and zinc oxide, and can be used alone or in combination according to the intended ultraviolet ray 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 a photographed image of a scanning electron microscope or a transmission electron microscope and a laser diffraction method.

[0016] As methods for hydrophobizing the surfaces of titanium oxide and zinc oxide, there are silicone treatments using triethoxycaprylylsilane, dimethicone, etc.; dextrin fatty acid treatments using dextrin palmitate, etc.; distearyldimethylammonium chloride treatments; fluorine treatments using perfluoroalkyl phosphate esters, perfluoroalcohols, etc.; amino acid treatments using N-acylglutamic acid, etc.; lecithin treatments; metal soap treatments such as aluminum stearate treatment and magnesium isostearate treatment; fatty acid treatments using isostearic acid, stearic acid, etc.; inorganic compound treatments; alkyl phosphate ester treatments, and the like.

[0017] The above (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 still 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 still more preferably SPF40 or more and PA++++ or more.

[0018] Note that the water-in-oil emulsion cosmetic of the present invention does not contain an ultraviolet absorber due to concerns such as skin irritation and stickiness. Ultraviolet absorbers are water-soluble ultraviolet absorbers and oil-soluble ultraviolet absorbers that are usually formulated in sunscreen cosmetics. For example, 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, 4,4-diarylbutadiene derivatives, and the like.

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

[0020] Examples of the surfactant (B) having an HLB of 11 or more include glycerin or polyglycerol fatty acid esters, propylene glycol fatty acid esters, polyoxyethylene (POE) sorbitan fatty acid esters, POE sorbit fatty acid esters, POE glycerol 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, in particular, polyglyceryl fatty acids and polyoxyethylene (POE) sorbitan fatty acid esters are preferred. For example, examples of polyglyceryl fatty acids include polyglyceryl-10 isostearate, polyglyceryl-10 myristate, polyglyceryl-10 laurate, and PEG-20 glyceryl isostearate. An example of polyoxyethylene (POE) sorbitan fatty acid esters is polysorbate 80. The surfactant (B) having an HLB of 11 or more in the present invention can be arbitrarily selected from the above and used alone or in combination of two or more. When two or more are combined, the ratio may be arbitrary.

[0021] (B) The surfactant with an HLB of 11 or more is contained in an amount of 0.4% by mass or more based on the total amount of the water-in-oil type emulsified cosmetic. By containing (B) the surfactant with an HLB of 11 or more in an amount of 0.4% by mass or more based on the total amount of the water-in-oil type emulsified cosmetic, (A) the compounding stability of the ultraviolet scattering agent in the water-in-oil type emulsified cosmetic can be made good. (B) The surfactant with an HLB of 11 or more is preferably in the range of 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 still more preferably 1.4% by mass or more and 5.5% by mass or less based on the total amount of the water-in-oil type emulsified cosmetic.

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

[0023] (C) The compounding amount of 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 still 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 type emulsified cosmetic. Polyhydroxystearic acid is not particularly limited as long as it can be used in ordinary cosmetics. For example, commercially available products include HS-6C (manufactured by Nisshin Oillio Group, Ltd.).

[0024] (D) Sorbitan sesquisoisostearate The water-in-oil type emulsified cosmetic of the present invention contains sorbitan sesquisoisostearate. (D) The compounding amount of sorbitan sesquisoisostearate 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 still 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 type emulsified cosmetic. By the content of (D) sorbitan sesquisoisostearate being within the above range, (A) the compounding stability of the ultraviolet scattering agent in the water-in-oil type emulsified cosmetic can be made good.

[0025] (E) Water-soluble thickener In the water-in-oil type emulsified cosmetic of the present invention, the (E) water-soluble thickener is dispersed in the internal phase (aqueous phase) and thickens the internal phase. Examples of the (E) 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 (quince), and alg colloid (brown seaweed extract); microbial-based polymers such as sclerotium gum and sodium hyaluronate; animal-based polymers such as collagen, casein, albumin, and gelatin; starch-based polymers such as starch (rice, corn, potato, wheat), carboxymethyl starch, and methyl hydroxypropyl starch.

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

[0027] Furthermore, examples of the synthetic water-soluble thickeners include vinyl polymers such as polyvinyl methyl ether and carboxyvinyl polymer, polyoxyethylene polymers, polyoxyethylene-polyoxypropylene copolymer polymers, acrylic polymers such as polyethyl acrylate and polyacrylamide, polyethyleneimine, cationic polymers, inorganic water-soluble polymers such as bentonite, magnesium aluminum silicate, laponite, hectorite, etc., PEG-240 / decyltetradeceth-20 / hexamethylene diisocyanate copolymer, (dimethylacrylamide / acryloyldimethyltaurine Na) cross-polymer, (sodium acrylate / acryloyldimethyltaurine) copolymer, (alkyl acrylate / steareth-20 methacrylate) copolymer, (acryloyldimethyltaurine ammonium / VP) copolymer, and polyacrylate cross-polymer-6.

[0028] In the present invention, the (E) water-soluble thickener can be arbitrarily selected from the above and used alone or in combination of two or more. When two or more are combined, the ratio can be arbitrary. From the viewpoint of obtaining a fresh feeling in use, one or more selected from natural water-soluble thickeners and polyacrylate cross-polymers are preferable, and polyacrylate cross-polymer-6 is particularly preferable.

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

[0030] (F) Dispersant excluding (C) and (D) (hereinafter referred to as (F) dispersant) Examples of the (F) dispersant include liquid higher fatty acids and polyglycerin fatty acid esters. Examples of the liquid higher fatty acid include isostearic acid, oleic acid, linoleic acid, linolenic acid, etc. Among them, isostearic acid is more preferable. Examples of the polyhydroxy fatty acid ester include polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, etc. The (F) dispersant in the present invention can be arbitrarily selected from the above and used alone or in combination of two or more. When two or more are combined, the ratio can be arbitrary. The blending amount of the (F) dispersant is preferably 2% by mass or less, more preferably 0.5% by mass or more and 1.5% by mass or less, and still more preferably 0.8% by mass or more and 1.2% by mass or less based on the total amount of the water-in-oil emulsion cosmetic. When the blending amount of the (F) dispersant is within the above range, the dispersibility of the (A) ultraviolet scattering agent can be made good and the ultraviolet shielding effect can be made higher.

[0031] (G) Aqueous component Examples of the (G) aqueous component include water and components soluble in water. Examples of the components soluble in water include alcohols such as ethanol, isopropyl alcohol, propylene glycol (propanediol), dipropylene glycol, 1,3-butylene glycol, 1,2-pentanediol (pentylene glycol), glycerin, diglycerin, and polyglycerin. These aqueous components can be arbitrarily selected and used alone or in combination of two or more as needed. Examples of the optional components that can be contained in the aqueous phase include, in addition to the above, moisturizing agents, stabilizing agents, various water-soluble drugs, etc.

[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 still more preferably 30% or more based on the total mass of the water-in-oil emulsion cosmetic. When the content of the total aqueous components is within the above range, the spreadability when applying the cosmetic to the skin is improved and the usability is good.

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

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

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

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

[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 usability as a cosmetic can be obtained.

[0038] (Other powder components) The cosmetic may further contain powder components other than the above (A). Examples of such powder components include inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, biotite, myka, perlite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, 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 pigments such as zirconium, barium or aluminum lake, natural pigment, boron nitride, borosilicate (Ca / Al), bismuth oxychloride, octenyl succinic acid starch Al, spherical powder, etc.).

[0039] (Other components) The water-in-oil emulsion cosmetic of the present invention may contain, in addition to the above, an antioxidant aid, a preservative, a whitening agent, a blood circulation promoter, various extracts, an activator, or an anti-seborrheic agent, etc.

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

Examples

[0041] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In addition, the blending amounts in the following examples, etc. indicate mass% unless otherwise specified.

[0042] [Examples 1 to 19, Comparative Examples 1 to 8] Among the components listed in Table 1, the oil-based components containing components (C), (D), and (F) were thoroughly mixed with a disperser, and then the powder component containing component (A) was added thereto and dispersed. Separately, the water-soluble components containing components (B) and (E) were added and stirred to produce an oil-in-water type emulsified cosmetic (sunblock cosmetic). The units of the numerical values in the table are mass%.

[0043] [Evaluation] The following evaluations were performed on the above Examples and Comparative Examples. The evaluation results are shown in Table 1.

[0044] <Evaluation of the feeling of use after application: powdery feeling, absence of squeaking> Samples of the oil-in-water type emulsified cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists, and the degree of the feeling during application on the skin was evaluated according to the following score criteria. [Score criteria] 5: No powdery feeling and no squeaking 4: Slightly no powdery feeling and no squeaking 3: Normal 2: Slightly powdery and having a squeaking feeling 1: Powdery and having a squeaking feeling Next, the average of the scores of 10 panelists was obtained, and the feeling of use after application was evaluated according to the following criteria. [Evaluation criteria] ◎: 3.5 or more ○: 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 the feeling of use after application: freshness (freshness, absence of stickiness)> Samples of the oil-in-water type emulsified cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 panelists, and the degree of the feeling during application on the skin was evaluated according to the following score criteria. [Score criteria] 5: Having a fresh feeling like gel and not sticky 4: Slightly moist and jelly-like, not overly sticky 3: Moist, slightly sticky 2: Slightly lacking in moisture, slightly sticky 1: Lacking in moisture, sticky Next, the average score of 10 company panelists was calculated, and the post-application feel was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or higher and less than 3.5 △: 2.5 or higher and less than 3.0 ×: Less than 2.5

[0046] <Post-application feel evaluation: Absence of white streaks> Samples of the water-in-oil emulsified cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 company panelists, and the degree of touch during application on the skin was evaluated according to the following score criteria. (Score Criteria) 5: No white streaks 4: Slightly no white streaks 3: Normal 2: Slightly white streaks 1: White streaks Next, the average score of 10 company panelists was calculated, and the post-application feel was evaluated according to the following criteria. (Evaluation Criteria) ◎: 3.5 or higher ○: 3.0 or higher and less than 3.5 △: 2.5 or higher and less than 3.0 ×: Less than 2.5

[0047] <Post-application feel evaluation: Ease of spreading, smooth application> Samples of the water-in-oil emulsified cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were applied to the arms of 10 company panelists, and the degree of touch during application on the skin 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 elongation Next, the average score of 10 panelists was calculated, and the usability after application was evaluated according to the following criteria. (Evaluation criteria) ◎: 3.5 or more ○: 3.0 or more and less than 3.5 △: 2.5 or more and less than 3.0 ×: Less than 2.5

[0048] <Evaluation of property stability: Emulsion stability> The property stabilities of the water-in-oil emulsion cosmetics of Examples 1 to 19 and Comparative Examples 1 to 8 were observed by three panelists visually for the appearance and by optical microscope for the state of emulsion particles, and evaluated 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 slight coalescence of emulsion particles is observed. 3: There is a slight unevenness in the appearance and coalescence of emulsion particles is observed. 2: There is unevenness in the appearance and coalescence of emulsion particles is observed. 1: It is separated and coalescence of emulsion particles is observed. The average score of three persons was calculated, and the usability after application was evaluated according to the following criteria. (Evaluation criteria) ◎: 3.5 or more ○: 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 Table 1 and Table 2, it was found that the water-in-oil emulsified cosmetics of the present invention in Examples 1 to 19 were free of powdery feeling and squeaking feeling and were excellent in moistness. Further, when the samples of each example were applied to a PMMA plate (Helioplate HD6 manufactured by Herioscreen) in an amount of 1.3 mg / cm 2 and the cosmetics of Examples 1 to 19 were measured with a UV2000S analyzer manufactured by Labsphere, all of the cosmetics described in Examples 1 to 19 had an SPF of 30 or more and a PA of +++ or more, and it was confirmed that both a high ultraviolet ray protection effect and the above effects were achieved.

[0052] On the other hand, Comparative Example 1 had the same evaluation as the examples, but when measured with an SPF analyzer, it had an SPF of less than 10 and a PA of +. This is because the blending amount of component (A) was small and a sufficient ultraviolet ray protection function, which is the problem of the present invention, was not obtained. Further, in Comparative Examples 2 to 8, any of the effects was inferior to those of the products of the present invention.

[0053] Hereinafter, formulation examples of the water-in-oil emulsified cosmetics of the present invention will be given, but the present invention is not limited thereto. The water-in-oil emulsified cosmetics obtained by the following formulation examples all maintained a high ultraviolet ray protection effect, did not show white turbidity, had no squeaking feeling, and were excellent in moist use feeling.

[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) Preservative Appropriate amount (10) Glyceryl Tri (caprylate / caprate) 5.0 (11) Squalane 15.0 (12) Dicaprylyl Carbonate 3.0 (13) Di (phytosteryl / octyldodecyl) Lauroyl Glutamate 0.1 (14) Isostearic Acid Component (F) 0.6 (15) Polyglyceryl-2 Trisostearate Component (F) 0.5 (16) Sesquiisostearic Acid Sorbitan Component (D) 0.5 (17) Polyhydroxystearic Acid Component (C) 0.5 (18) Distearyldimonium 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) Perfume, Essential Oil 0.1 (25) Hydrophobically Treated Micronized Zinc Oxide Component (A) 20.0 (26) Hydrophobically Treated Micronized Titanium Dioxide Component (A) 6.0 (27) Purified Water Balance

[0055] [Formulation Example 2] Sunscreen Cosmetic (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) Preservative 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 - 2 triisostearate component (F) 0.5 (18) Sorbitan sesquisostearate component (D) 1.0 (19) Polyhydroxystearic acid component (C) 0.4 (20) Distearyldimonium hectorite 0.1 (21) Silica 1.0 (22) Tocopherol 0.05 (23) Hydrophobically treated fine zinc oxide particles component (A) 22.0 (24) Hydrophobically treated fine titanium oxide particles component (A) 6.0 (25) Purified water the remainder

[0056] [Formulation Example 3] Sunscreen cosmetic (1) Xanthan gum component (E) 0.2 (mass%) (2) Sclerotium gum component (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) Preservative 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) Methyltrimethicone 3.0 (18) Dimethicone 2.0 (19) Isostearic acid Component (F) 0.1 (20) Polyglyceryl-2 triisostearate Component (F) 0.5 (21) Sorbitan sesquisoisostearate Component (D) 1.0 (22) Polyhydroxystearic acid Component (C) 0.5 (23) Distearyldimonium hectorite 0.1 (24) Silica 2.0 (25) Tocopherol 0.05 (26) Hydrophobically treated fine zinc oxide Component (A) 20.0 (27) Hydrophobically treated fine titanium oxide 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) Preservative 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) Diphenylsiloxyphenyltrimethicone 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) Distearyldimonium hectorite 0.2 (20) Iron oxide 2.0 (21) Mica 1.0 (22) Titanium oxide 5.0 (23) Silica 1.0 (24) Tocopherol 0.05 (25) Hydrophobically treated fine zinc oxide Component (A) 16.0 (26) Hydrophobically treated fine titanium oxide Component (A) 4.0 (27) Purified water The balance

[0058] As described above, the preferred embodiments of the present invention have been described in detail. However, 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. An oil-in-water emulsified cosmetic comprising: (A) 10% by mass or more and 45% by mass or less of an ultraviolet scattering agent composed of at least one of hydrophobized titanium oxide and zinc oxide, (B) 0.4% by mass or more of a surfactant having an HLB of 11 or more, (C) 0.15% by mass or more and 2.0% by mass or less of polyhydroxystearic acid, (D) 0.2% by mass or more and 2.5% by mass or less of sorbitan sesquisoisostearate, and (E) 0.2% by mass or more and 3.5% by mass or less of a water-soluble thickener.

2. Furthermore, the oil-in-water emulsified cosmetic according to Claim 1, wherein the content of a dispersant excluding (C) and (D) is 2% by mass or less.

3. The oil-in-water emulsified cosmetic according to Claim 1 or 2, which does not contain an ultraviolet absorber.

4. The oil-in-water emulsified cosmetic according to Claim 1 or 2, which is a sunscreen cosmetic.

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