Oil-in-water cosmetics

The oil-in-water cosmetic composition, with a benzotriazole-type ultraviolet absorber, silicone wax, and 50% water, addresses issues of spreading and stickiness, providing quick-drying and uniform application for effective UV protection.

JP2026063492APending Publication Date: 2026-04-10ROHTO PHARM CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2026-02-03
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing oil-in-water cosmetics face issues with poor spreading, stickiness, and slow drying, which affect their ultraviolet protection efficacy and usability.

Method used

An oil-in-water cosmetic composition containing a benzotriazole-type ultraviolet absorber, silicone wax or silica with an average particle diameter of 1 μm or more, and 50% or more water by mass, along with additional components like nonionic surfactants and acrylic acid polymers, to enhance quick drying, application, and emulsification.

Benefits of technology

The composition achieves excellent quick-drying properties, non-stickiness, and uniform application, ensuring immediate and effective UV protection.

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Abstract

We provide oil-in-water type cosmetics. [Solution] The present invention is an oil-in-water cosmetic comprising (A) a benzotriazole-type ultraviolet absorber, (B) one or more selected from the group consisting of silicone wax and silica, and (C) water, wherein the average particle size of the silica of component (B) is 1 μm or more, and the content of component (C) is 50% by mass or more based on the total amount of the oil-in-water cosmetic.
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Description

Technical Field

[0001] The present invention relates to an oil-in-water type cosmetic.

Background Art

[0002] In order to protect the human body from ultraviolet rays in various scenes of daily life, attempts have been made to incorporate ultraviolet absorbers into cosmetics. There have been many problems in realizing cosmetics with excellent ultraviolet protection effects and usability.

[0003] Attempts have been made to set the total amount and blending ratio of higher alcohols and surfactants within a specific range to achieve an ultraviolet protection effect and good usability (Patent Document 1), but when there is a large amount of higher alcohol, there are problems such as poor spreading and stickiness during application, which are insufficient.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide an oil-in-water type cosmetic excellent in quick drying property, coating property, and usability.

Means for Solving the Problems

[0006] The present inventors provide an oil-in-water type cosmetic containing (A) a benzotriazole type ultraviolet absorber, (B) at least one selected from the group consisting of silicone wax and silica, and (C) water, where the average particle diameter of the silica in the component (B) is 1 μm or more, and the content of the component (C) is 50% by mass or more based on the total amount of the oil-in-water type cosmetic.

[0007] The present invention has shown that it is possible to obtain an oil-in-water cosmetic composition that is excellent in terms of quick drying, application, feel, and emulsification. The present invention was completed based on these findings.

[0008] In other words, the present invention is [1] An oil-in-water cosmetic containing (A) a benzotriazole-type ultraviolet absorber, (B) one or more selected from the group consisting of silicone wax and silica, and (C) water, An oil-in-water cosmetic wherein the average particle size of the silica of component (B) is 1 μm or more, and the content of component (C) is 50% by mass or more based on the total amount of the oil-in-water cosmetic; [2](D) Oil-in-water cosmetic composition according to [1], containing a nonionic surfactant; [3](E) an oil-in-water cosmetic according to [1] or [2], containing an ultraviolet protection agent (excluding component (A) above); [4](F) Oil-in-water cosmetic composition according to [1] to [3], containing an acrylic acid polymer; [5] The oil-in-water cosmetic composition according to [2], wherein component (D) is one or more selected from the group consisting of polyglycerin fatty acids, sorbitan fatty acid esters, polyoxyethylene fatty acids, sucrose fatty acid esters, polysorbates, polyoxyethylene phytosterols, and silicone-based surfactants; [6] The oil-in-water cosmetic according to [3], wherein component (E) is one or more selected from the group consisting of 2-ethylhexyl paramethoxycinnamate, dimethicone diethyl benzalmalonate, diethylamino hydroxybenzoyl hexyl benzoate, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, 4-tert-butyl-4'-methoxydibenzoylmethane, ethylhexyl salicylate, phenylbenzimidazole sulfonic acid, paraaminobenzoic acid, zinc oxide, and titanium dioxide; [7] The oil-in-water cosmetic according to [4], wherein component (F) is one or more selected from the group consisting of carbomer, (acrylates / alkyl(C10-30) acrylate crosspolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer, and polyacrylamide; [8] The oil-in-water cosmetic composition according to [1] to [7], wherein the total content of component (B) is 0.0001 to 500 parts by mass per 1 part by mass of the total content of component (A); [9](B) The total content of component 0.01 to 10% by mass of the oil-in-water cosmetic according to [1] to [8];

[10] Oil-in-water cosmetics as described in [1] to [9], for use as sunscreen; It provides the following: [Effects of the Invention]

[0009] The oil-in-water cosmetic composition of the present invention contains (A) a benzotriazole-type ultraviolet absorber, (B) one or more selected from the group consisting of silicone wax and silica, and (C) 50% or more of water, wherein the average particle size of the silica in component (B) is 1 μm or more, and the content of component (C) is 50% by mass or more based on the total amount of the oil-in-water cosmetic composition, thus providing excellent quick-drying properties, applicability, feel, and emulsification. [Brief explanation of the drawing]

[0010] [Figure 1] The results of evaluating the coating uniformity of Test Example 1 using the compositions of Example 1 and Comparative Example 1 are shown. [Modes for carrying out the invention]

[0011] The embodiments for carrying out the present invention will be described in detail below. However, the present invention is not limited to the following embodiments.

[0012] [1. Oil-in-water cosmetics] The oil-in-water cosmetic composition according to this embodiment is an oil-in-water cosmetic composition containing (A) a benzotriazole-type ultraviolet absorber (also simply referred to as "component (A)"), (B) one or more selected from the group consisting of silicone wax and silica (also simply referred to as "component (B)"), and (C) water, wherein the average particle size of the silica in component (B) is 1 μm or more, and the content of component (C) relative to the entire oil-in-water cosmetic composition is 50% by mass or more.

[0013] <(A) component> The benzotriazole-type UV absorber is a methylenebis(hydroxyphenyl-benzotriazole) derivative, with methylenebisbenzotriazolyltetramethylbutylphenol being preferred. Commercially available products such as Tinosorb M (BASF) and Parsol MAX (DSM) can be used. One type may be used alone, or two or more types may be used in combination.

[0014] The content of component (A) in the oil-in-water cosmetic composition according to this embodiment is not particularly limited and is set appropriately depending on the type of component (A), the types and content of other components, the use and formulation form of the oil-in-water cosmetic composition, etc. As for the content of component (A), from the viewpoint of more significantly exhibiting the effects of the present invention, for example, based on the total amount of the oil-in-water cosmetic composition, the total content of component (A) may be 0.01 to 20% by mass, preferably 0.01 to 10% by mass, more preferably 0.03 to 8% by mass, even more preferably 0.05 to 6% by mass, even more preferably 0.08 to 5% by mass, particularly preferably 0.1 to 3% by mass, and most preferably 0.1 to 2% by mass.

[0015] <(B) component> One or more substances selected from the group consisting of silicone wax and silica may be used individually or in combination of two or more substances. (B) Among the components, from the viewpoint of exhibiting the effects of the present invention more significantly, polyether-modified silicone wax is preferred, water-soluble polyether-modified silicone wax is more preferred, bis-PEG-18 methyl ether dimethylsilane, bis-PEG-15 methyl ether dimethicone, PEG-32 methyl ether dimethicone, and PEG-17 dimethicone are even more preferred, and bis-PEG-18 methyl ether dimethylsilane is the most preferred. Commercially available silicone waxes can be used, and examples include 2501 CosmeticWax (manufactured by Toray Dow Corning, bis-PEG-18 methyl ether dimethylsilane, melting point 36-42°C), DMC 6038 (manufactured by Wacker, bis-PEG-15 methyl ether dimethicone, melting point approximately 30°C), KF-6004 (manufactured by Shin-Etsu Chemical, PEG-32 methyl ether dimethicone, melting point 45°C), or Silsoft® 895 (manufactured by MOMENTIVE, PEG-17 dimethicone). (B) Among the components, from the viewpoint of exhibiting the effects of the present invention even more significantly, the silica has an average particle diameter of 1 μm or more, preferably 1 to 20 μm, more preferably 1 to 15 μm, even more preferably 2 to 10 μm, and particularly preferably 2 to 7 μm. The average particle diameter is the median diameter (D50) measured by laser diffraction. An example of the apparatus used for laser diffraction is the LA960 (manufactured by HORIBA Corporation). The silica may be hydrophobic or hydrophilic. Commercially available silica can be used, with examples including SIRICA MICRO BEAD P-500, SIRICA MICRO BEAD P-4000, SILICA PEARL P-4M, SILICA PEARL 20CG, HCS 160M5, SILICA MICRO BEAD BA-1 (all manufactured by JGC Catalysts & Chemicals), Silicea 320 (manufactured by Fuji Silicea Chemicals), Sunsphere H-31, and Sunsphere H-51 (both manufactured by AGC SI-TEC). If the average particle size of the silica is less than 1 μm, the emulsification state may not be desirable.

[0016] The content of component (B) in the water-in-oil type cosmetic according to this embodiment is not particularly limited, and is appropriately set according to the type of component (B), the types and contents of other compounding components, the uses and dosage forms of the water-in-oil type cosmetic, and the like. From the viewpoint of more significantly exhibiting the effects of the present invention, the total content of component (B) is preferably 0.01 to 10% by mass, more preferably 0.05 to 8% by mass, still more preferably 0.1 to 6% by mass, still more preferably 0.1 to 5% by mass, and particularly preferably 0.1 to 4% by mass, based on the total amount of the water-in-oil type cosmetic.

[0017] <Component (C)> As the water, ion-exchanged water, distilled water or the like can be used. The content of water is not particularly limited and is appropriately set according to the types and contents of other compounding components, the uses and dosage forms of the water-in-oil type cosmetic, and the like. From the viewpoint of more significantly exhibiting the effects of the present invention, the total content of component (C) is preferably 50% by mass or more, more preferably 55% by mass or more, still more preferably 60% by mass or more, and particularly preferably 65% by mass or more, based on the total amount of the water-in-oil type cosmetic. For example, if it is about 45% by mass or less, the emulsified state may not be preferable. The total content of component (C) is preferably 98% by mass or less, more preferably 96.5% by mass or less, and still more preferably 95% by mass or less, based on the total amount of the water-in-oil type cosmetic.

[0018] <Component (D)> The water-in-oil type cosmetic according to this embodiment may further contain a (D) nonionic surfactant (also simply referred to as “component (D)”). By further containing component (D) in the water-in-oil type cosmetic, the effects of the present invention are more significantly exhibited. Component (D) is not particularly limited as long as it is generally used in cosmetic compositions.

[0019] (D) Components include polyglycerin fatty acids such as polyglyceryl monostearate, polyglyceryl monoisostearate, polyglyceryl diisostearate, and polyglyceryl pentaisostearate; sorbitan fatty acid esters such as sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, diglycerol sorbitan penta-2-ethylhexylate, and diglycerol sorbitan tetra-2-ethylhexylate; and polyoxyethylene glycol such as polyethylene glycol monostearate, polyethylene glycol stearate, and polyethylene glycol isostearate. Examples include lenticels; sucrose fatty acid esters; polysorbates such as polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, and polyoxyethylene sorbitan oleate; polyoxyethylene phytosterols; and silicone-based surfactants such as polyoxyethylene-methylpolysiloxane copolymer, polysilicone-13 (poly(oxyethylene-oxypropylene)-butylene-methylpolysiloxane copolymer), lauryl PEG-9 polydimethylsiloxyethyl dimethicone, and PEG-9 polydimethylsiloxyethyl dimethicone. Component (D) preferably has an HLB of 1 to 15, more preferably 2 to 13, even more preferably 2 to 11, even more preferably 2 to 10, and particularly preferably 2 to 9. HLB can be determined by the Griffin method. Component (D) can be a commercially available product.

[0020] The content of component (D) in the oil-in-water cosmetic composition according to this embodiment is not particularly limited and is set appropriately depending on the type of component (D), the types and content of other components, the use and formulation form of the oil-in-water cosmetic composition, etc. As for the content of component (D), from the viewpoint of more significantly exhibiting the effects of the present invention, for example, based on the total amount of the oil-in-water cosmetic composition, the total content of component (D) is preferably 0.01 to 10% by mass, more preferably 0.05 to 8% by mass, even more preferably 0.05 to 6% by mass, even more preferably 0.05 to 4% by mass, and particularly preferably 0.1 to 2% by mass.

[0021] <(E) component> The oil-in-water cosmetic composition according to this embodiment may further contain (E) an ultraviolet protection agent (also simply referred to as "component (E)"). The effects of the present invention are more pronounced when the oil-in-water cosmetic composition further contains component (E). Component (E) is not particularly limited as long as it is commonly used in cosmetic compositions.

[0022] (E) The components include 2-ethylhexyl paramethoxycinnamate, dimethicone diethyl benzalmalonate, octocrylene, diethylamino hydroxybenzoyl hexyl benzoate, para-aminobenzoic acid, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, 4 Examples include one or more oil-soluble ultraviolet absorbers selected from the group consisting of -tert-butyl-4'-methoxydibenzoylmethane, homomenthyl salicylate, ethylhexyl salicylate, and octyl salicylate; one or more water-soluble ultraviolet absorbers selected from the group consisting of phenylbenzimidazole sulfonic acid and terephthalylidene dicamphor sulfonic acid; and one or more metal oxides selected from the group consisting of zinc oxide, titanium oxide, cerium oxide, and zirconium oxide. The oil-soluble ultraviolet absorber is preferably less than 0.01% soluble in water. The metal oxide is not particularly limited in terms of shape such as spherical, plate-like, or needle-like, particle size such as fuzzy, fine, or pigment-grade, and particle structure such as porous or non-porous, and may be surface-treated by known surface treatment methods. Component (E) can be a commercially available product.

[0023] The content of component (E) in the oil-in-water cosmetic composition according to this embodiment is not particularly limited and is set appropriately depending on the type of component (E), the types and content of other components, the use and formulation form of the oil-in-water cosmetic composition, etc. As for the content of component (E), from the viewpoint of more significantly exhibiting the effects of the present invention, for example, based on the total amount of the oil-in-water cosmetic composition, the total content of component (E) is preferably 0.1 to 25% by mass, more preferably 0.5 to 20% by mass, even more preferably 1 to 15% by mass, even more preferably 3 to 15% by mass, and particularly preferably 5 to 15% by mass.

[0024] <(F) component> The oil-in-water cosmetic composition according to this embodiment may further contain (F) an acrylic acid polymer (also simply referred to as "component (F)"). The effects of the present invention are more pronounced when the oil-in-water cosmetic composition further contains component (F). Component (F) is not particularly limited as long as it is commonly used in cosmetic compositions.

[0025] (F) Components include (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, (ammonium acryloyldimethyltaurate / steareth-25 methacrylate) crosspolymer, (ammonium acryloyldimethyltaurate / carboxyethylammonium acrylate) crosspolymer, acrylamide / ammonium acrylate copolymer, and polyacrylate crosspolymer-6. Examples include polyacrylate crosspolymer-11, polyacrylate-13, (acrylic acid / acryloyldimethyltaurine / dimethylacrylamide) crosspolymer, (sodium acrylate / acryloyldimethyltaurine / dimethylacrylamide) crosspolymer, (acrylates / alkyl acrylate (C10-30)) crosspolymer, (acrylates / steareth-20 methacrylate) copolymer, (acrylates / beheneth-25 methacrylate) copolymer, (acrylates / steareth-20 itaconic acid) copolymer, steareth-10 allyl ether / acrylates copolymer, carboxyvinyl polymer (carbomer), and polyacrylamide. Component (F) can be a commercially available product.

[0026] The content of component (F) in the oil-in-water cosmetic composition according to this embodiment is not particularly limited and is set appropriately depending on the type of component (F), the types and content of other components, the use and formulation form of the oil-in-water cosmetic composition, etc. As for the content of component (F), from the viewpoint of more significantly exhibiting the effects of the present invention, for example, based on the total amount of the oil-in-water cosmetic composition, the total content of component (F) is preferably 0.01 to 5% by mass, more preferably 0.05 to 4% by mass, even more preferably 0.05 to 3% by mass, even more preferably 0.1 to 3% by mass, and particularly preferably 0.1 to 2% by mass.

[0027] In the oil-in-water cosmetic composition according to this embodiment, the content ratio of component (B) to component (A) is not particularly limited and is set appropriately depending on the types of component (A) and component (B), the types and content of other blending components, the use and formulation form of the oil-in-water cosmetic composition, etc. As for the content ratio of component (B) to component (A), from the viewpoint of more significantly exhibiting the effects of the present invention, for example, the total content of component (B) in the oil-in-water cosmetic composition according to this embodiment is preferably 0.0001 to 500 parts by mass, more preferably 0.0001 to 300 parts by mass, even more preferably 0.0005 to 100 parts by mass, even more preferably 0.0005 to 50 parts by mass, and particularly preferably 0.001 to 10 parts by mass, per 1 part by mass of the total content of component (A) contained in the oil-in-water cosmetic composition according to this embodiment.

[0028] The oil-in-water cosmetic composition according to this embodiment may contain known ingredients used in cosmetics and quasi-drugs, as long as they do not hinder the effects of the present invention. In addition to the above ingredients (A) to (F), for example, antioxidants, whitening ingredients, moisturizers, anti-inflammatory ingredients, antibacterial agents, vitamins, amino acids, biological extracts, and various pharmacologically and physiologically active ingredients may be included in appropriate amounts in combination. Additives, such as surfactants (except for (D) above), preservatives, pH adjusters, chelating agents, stabilizers, buffers, thickeners (except for (F) above), gelling agents, irritation reducers, antiseptics, colorants, fragrances, and minerals, may be added individually or in combination of two or more. A base or carrier may also be included individually or in combination of two or more. These can be appropriately selected from known sources and can be manufactured using conventional methods.

[0029] The oil-in-water cosmetic composition according to this embodiment can be prepared by mixing and stirring each component according to a conventional method.

[0030] The oil-in-water cosmetic composition according to this embodiment is not particularly limited in its form as a drug and can take any form known as a cosmetic or quasi-drug. Among such known forms, examples include liquids, suspensions, emulsions, creams, gels, liniments, ointments, lotions, aerosols, powders, poultices, sheets impregnated with the drug solution, and sticks such as lipsticks. It can also be used in the form of basic cosmetics such as emulsions, creams, body lotions, body creams, and sunscreens, as well as makeup cosmetics such as foundations, lipsticks, blushes, eye makeup, face powders, nail polishes, and pedicures. Preferably, it is a sunscreen cosmetic.

[0031] The application area of ​​the oil-in-water cosmetic composition according to this embodiment is not particularly limited, but it can be applied to any of the following: face, arms, hands, feet, neck, etc. [Examples]

[0032] The present invention will be described in detail below based on test examples, but the present invention is not limited to these. Furthermore, the amounts used in the following examples are expressed in mass percent.

[0033] [Test Example 1] Oil-in-water compositions having the compositions shown in Table 1 below were prepared according to conventional methods, and their quick-drying properties, non-stickiness, and application uniformity were evaluated. Note that in the table, for "50% aqueous dispersion of methylenebisbenzotriazolyltetramethylbutylphenol," if the indicated amount is 3% by mass, the composition contains half that amount, or 1.5% by mass, of methylenebisbenzotriazolyltetramethylbutylphenol.

[0034] (Evaluation criteria for quick-drying properties) ◎: When touching the applied area 30 seconds after application, there is no feeling of remaining moisture, and it feels as if it has blended into the skin. ○: When touching the applied area 30 seconds after application, there is almost no feeling of moisture remaining, and it feels as if it has blended into the skin. △: When touching the applied area 30 seconds after application, there is a slight feeling of moisture remaining, and it feels like it hasn't fully absorbed into the skin. ×: When touching the applied area 30 seconds after application, there is a strong feeling of remaining moisture, and it feels as if the product has not been absorbed into the skin.

[0035] (Evaluation criteria for non-stickiness) ○: When you touch the applied area 30 seconds after applying it to your skin, you will not feel any stickiness. ×: If you touch the applied area 30 seconds after application, you will feel sticky.

[0036] (Evaluation criteria for uniform application) Three grams of the composition were weighed onto artificial leather and applied evenly using a barcoder. The applied area was observed 10 minutes after application. ◎: The unevenness of the artificial leather was covered, and no unevenness was observed across the entire coated area, resulting in uniform application. 〇: The unevenness of the artificial leather was covered, and almost no unevenness was observed across the entire coated area, resulting in uniform application. △: The unevenness of the artificial leather was not covered, resulting in unevenness in the applied area and inability to apply uniformly. ×: The unevenness of the artificial leather was not covered, resulting in unevenness across the entire coated area and failure to apply uniformly.

[0037] [Table 1] *1 Tinosorb M (manufactured by BASF) *2 2501 Cosmeticwax (manufactured by Toray Dow Corning) *3 SS-2804 (manufactured by Toray Dow Corning)

[0038] As shown in Table 1, compositions containing a benzotriazole-type UV absorber and silicone wax were superior to compositions without silicone wax in terms of quick drying, non-stickiness, and uniform application. As shown in Figure 1, in Comparative Example 1, the boundaries between the ridges and grooves of the artificial leather were clearly visible, the unevenness was not covered, and unevenness was observed in the application on the ridges, indicating that uniform application was not possible. On the other hand, compared to Comparative Example 1, Example 1 was able to be applied to the grooves of the artificial leather, the unevenness was covered, and the application was uniform overall. Due to its quick drying and non-stickiness, the composition according to the present invention allows the UV absorber to exert its UV protection effect immediately after application, and due to its uniform application, it can exert a high UV protection effect.

[0039] [Test Example 2] Oil-in-water compositions having the compositions shown in Table 2 below were prepared according to conventional methods, and their application uniformity and spreadability were evaluated. The evaluation criteria for application uniformity were the same as those for Test Example 1.

[0040] (Evaluation criteria for ease of spreading) 32.5 mg of the composition was weighed out and spread onto a PMMA plate. ○: It spreads smoothly and feels no resistance on the fingertips. △: Spreads smoothly and feels almost no resistance on the fingertips. ×: It was difficult to apply smoothly, and I felt resistance on my fingertips.

[0041] [Table 2] *4 SIRICA MICRO BEAD P-500 (average particle size 2 μm, Lot: 048, manufactured by JGC Catalysts & Chemicals Co., Ltd.)

[0042] As shown in Table 2, compositions containing a benzotriazole-type UV absorber and silica were superior to compositions without silica in terms of uniformity of application and ease of spreading. Because the compositions according to the present invention are easy to spread, they can be applied quickly, allowing the UV absorber to exert its UV protection effect immediately after application, and resulting in a high UV protection effect due to the uniformity of application.

[0043] [Test Example 3] Oil-in-water compositions having the compositions shown in Table 3 below were prepared according to conventional methods, and their quick-drying properties, skin compatibility, and emulsification state were evaluated. The evaluation criteria for quick-drying properties were the same as those for Test Example 1.

[0044] (Evaluation criteria for skin compatibility) Two minutes after application to the skin, the treated area and the untreated skin surface were touched with a finger, and the sensation of resistance was compared. ◎: The applied area feels very smooth compared to the unapplied skin surface, with no rough texture when touched. ○: The applied area feels smooth and almost completely free of any resistance to the touch compared to the unapplied skin surface. △: The applied area feels rougher to the touch compared to the unapplied skin surface. ×: The applied area feels much rougher to the touch compared to the unapplied skin surface.

[0045] (Emulsification state evaluation criterion 1: Smoothness) 80g of the composition immediately after preparation was placed in a 100mL beaker, and the appearance of the emulsification state of the surface in contact with air was visually observed. ◎: No bumps or irregularities, very smooth. ○: Smooth, without bumps or irregularities. △: Slightly uneven ×: It has an uneven surface.

[0046] (Emulsification state evaluation criterion 2: gloss) 80g of the composition immediately after preparation was placed in a 100mL beaker, and the appearance of the emulsification state of the surface in contact with air was visually observed. ◎: Very glossy ○: Glossy △: Slightly glossy ×: No gloss

[0047] [Table 3] *5 Decaglyn 5-ISV (manufactured by Nikko Chemicals Co., Ltd.) *6 Tinosorb S (manufactured by BASF) *7 Parsol MCX (manufactured by DSM) *8 Parsol SLX (manufactured by DSM) *9 Carbopol ETD2020 (manufactured by Lubrizol)

[0048] As shown in Table 3, compositions containing a benzotriazole-type UV absorber and silicone wax exhibited superior quick-drying properties, skin compatibility, and emulsification compared to compositions that did not contain silicone wax or contained a non-silicone synthetic wax instead of silicone wax. Because the compositions according to the present invention have high quick-drying properties and skin compatibility, they are less likely to adhere to clothing or skin immediately after application, providing users with a comfortable user experience.

[0049] [Test Example 4] Oil-in-water compositions having the compositions shown in Table 4 below were prepared according to conventional methods, and their skin compatibility, friction resistance, and emulsification state were evaluated. The evaluation criteria for skin compatibility and emulsification state were the same as those for Test Example 3.

[0050] (Evaluation criteria for friction resistance) ◎: After applying to the skin, there was no change even after rubbing the applied area back and forth 10 times with a finger 2 minutes later. ○: After applying to the skin, rubbing the area 10 times back and forth with a finger 2 minutes later showed almost no change. △: After applying to the skin, when the applied area was rubbed back and forth 10 times with a finger 2 minutes later, a white, streaky mass of the composition was observed. ×: After applying to the skin, when the applied area was rubbed back and forth 10 times with a finger 2 minutes later, large clumps of white, streaky composition were observed.

[0051] [Table 4] *10 Aerosil 200 (average particle size 12nm, Lot: 616060881, manufactured by Nippon Aerosil Co., Ltd.) *11 SS-10V (manufactured by Nikko Chemicals Co., Ltd.) *12 FZ-2233 (manufactured by Toray Dow Corning)

[0052] As shown in Table 4, the composition containing a benzotriazole-type UV absorber and silica with an average particle size of 2 μm exhibited superior skin compatibility, friction resistance, and emulsification compared to the composition containing silica with an average particle size of 12 nm and the composition containing 45% by mass of water. The composition containing silica with an average particle size of 12 nm exhibited very poor emulsification, making it impossible to perform other evaluations. Because the composition according to the present invention has high skin compatibility and friction resistance, it is less likely to adhere to clothing or skin immediately after application, providing the user with a comfortable feel, and these effects last for a long time.

[0053] [Test Example 5] Oil-in-water compositions having the compositions shown in Table 5 below were prepared according to conventional methods, and their quick-drying properties, skin compatibility, secondary adhesion, and emulsification state were evaluated. The evaluation criteria for quick-drying properties were the same as in Test Example 1. The evaluation criteria for skin compatibility and emulsification state were the same as in Test Example 3.

[0054] (Evaluation criteria for secondary adhesion) One g of the composition was applied to the area between the wrist and the elbow, and left to stand for 10 seconds. Fifty 1 cm square pieces of paper were dropped from a height of 10 cm above the application area. After pressing the application area once with the palm of the hand, the number of paper pieces remaining on the application area was counted. Next, with the application area still facing upwards, it was moved horizontally 15 cm back and forth 10 times, and the number of paper pieces remaining on the application area was counted. ◎: When you move your arm, all the paper pieces will peel off from the coated area. ○: When you move your arm, more than 90% of the paper fragments will peel off from the coated area. △: Moving your arm leaves more than 90% of the paper fragments on the coated area. ×: When the arm is moved, more than 90% of the paper fragments remain on the coated area, and traces of the composition soaking into the attached paper fragments can be observed.

[0055] [Table 5]

[0056] Prepare the formulations described below. Formulations 1-7 are all oil-in-water cosmetic formulations and can be prepared by conventional methods. All values ​​represent mass percentages.

[0057] Formula Example 1 (Oil-in-Water UV Gel) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 2 Bis-PEG-18 methyl ether dimethyl silane 0.5 Ethylhexyl Methoxycinnamate 7 Ethylhexyltriazone 3 Diethylaminohydroxybenzoyl hexyl benzoate 3 (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer 0.4 Xanthan gum 0.05 PEG-40 stearate 0.5 Diethylhexyl succinate 5 1,3-Butylene glycol 5 Sodium edetate 0.05 Sodium hyaluronate 0.01 Triethanolamine 0.3 Purified water 73.19

[0058] Formula Example 2 (Oil-in-Water UV Gel) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 3 Bis-PEG-18 Methyl Ether Dimethyl Silane 3 Polysilicone-15 2 Bis-ethylhexyloxyphenol methoxyphenyl triazine 2 Ethylhexyltriazone 2 Diethylaminohydroxybenzoyl hexyl benzoate 2 Ethylhexyl salicylate 8 (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer 0.4 Xanthan gum 0.05 PEG-40 stearate 0.5 Polysorbate 60 0.5 Glyceryl tri-2-ethylhexanoate 5 Diethylhexyl succinate 5 1,3-Butylene glycol 5 Sodium edetate 0.05 Sodium hyaluronate 0.01 Triethanolamine 0.3 Purified water 61.19

[0059] Formula Example 3 (Oil-in-Water UV Gel Cream) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 2 BisPEG-18 Methyl Ether Dimethyl Silane 1 Ethylhexyl Methoxycinnamate 7 Hydrophobized zinc oxide fine particles 10 (Acryloyldimethyltaurate Ammonium / VP) Copolymer 0.5 PEG-40 stearate 0.5 Polyglyceryl-10 Pentaisostearate 0.5 Isononyl isononanoate 5 1,3-Butylene glycol 5 Sodium edetate 0.05 Sodium hyaluronate 0.01 Purified water 68.44

[0060] Formula Example 4 (Oil-in-Water UV Gel Cream) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 2 BisPEG-18 Methyl Ether Dimethyl Silane 1 Bis-ethylhexyloxyphenol methoxyphenyl triazine 2 Ethylhexyltriazone 2 Ethylhexyl salicylate 2 Hydrophobized titanium dioxide fine particles 5 Hydrophobized zinc oxide fine particles 10 (Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate) Copolymer 0.5 Polysorbate 80 1 Glyceryl tri-2-ethylhexanoate 10 Talc 1 1,3-Butylene glycol 5 Sodium edetate 0.05 Sodium hyaluronate 0.1 Purified water 58.35

[0061] Formula Example 5 (Oil-in-Water Type Color UV Cream) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 1.5 BisPEG-18 Methyl Ether Dimethyl Silane 1 Silica (average particle size 2 μm) 0.5 Ethylhexyl Methoxycinnamate 7 Bis-ethylhexyloxyphenol methoxyphenyl triazine 1 Ethylhexyltriazone 0.5 Diethylaminohydroxybenzoyl hexyl benzoate 1 (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer 0.2 (Acryloyldimethyltaurate Ammonium / VP) Copolymer 0.2 Polysorbate 60 1 Polyhydroxystearic acid 0.5 Diphenylsiloxyphenyl trimethicone 5 Polyglyceryl-2 triisostearate 0.5 PEG-12 Dimethicone 0.5 Synthetic fluorogopite 1 Red 226 0.01 Blue 1 0.005 Acrylates copolymer 1 Hydrophilic treated titanium dioxide 1 1,3-Butylene glycol 5 Sodium hyaluronate 0.01 Triethanolamine 0.2 Purified water 71.375

[0062] Formula Example 6 (Oil-in-Water UV Cream) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 2 BisPEG-18 Methyl Ether Dimethyl Silane 1 Silica (average particle size 18 μm) 1 Ethylhexyl Methoxycinnamate 7 Bis-ethylhexyloxyphenol methoxyphenyl triazine 2 Ethylhexyltriazone 2 Diethylaminohydroxybenzoyl hexyl benzoate 2 (Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate) Copolymer 0.5 Xanthan gum 0.05 Glyceryl stearate 0.5 PEG-100 stearate 0.5 Diethylhexyl succinate 5 Caprylyl Methicone 5 1,3-Butylene glycol 10 Sodium edetate 0.05 Sodium hyaluronate 0.01 Purified water 61.39

[0063] Formula Example 7 (Oil-in-Water UV Gel) (Ingredient name) Compounding amount (mass%) Methylenebisbenzotriazolyltetramethylbutylphenol 1 BisPEG-18 Methyl Ether Dimethyl Silane 1 Silica (average particle size 5 μm) 1 Ethylhexyl Methoxycinnamate 7 Bis-ethylhexyloxyphenol methoxyphenyl triazine 2 Diethylaminohydroxybenzoyl hexyl benzoate 2 (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer 0.4 Biosaccharide Gum-4 0.5 PEG-40 stearate 0.5 Polysilicone-13 0.5 Diethylhexyl succinate 5 1,3-Butylene glycol 5 Sodium edetate 0.05 Sodium hyaluronate 0.01 Triethanolamine 0.3 Purified water 73.74

Claims

[Claim 1] The invention described in the specification.

Citation Information

Patent Citations

  • Oil-in-water type emulsion composition

    JP2010189281A