WO2022202713A1

WO2022202713A1 - Cosmetic material

Info

Publication number: WO2022202713A1
Application number: PCT/JP2022/012836
Authority: WO
Inventors: 翔大高松
Original assignee: 花王株式会社
Priority date: 2021-03-22
Filing date: 2022-03-18
Publication date: 2022-09-29
Also published as: JP2022146924A; TW202304410A

Abstract

A cosmetic material comprising components (A) and (B), wherein: the contained amount of component (A) with respect to the entirety of the cosmetic material is 0.3-10 mass%; if the cosmetic material contains component (C), the contained amount of component (C) is 5.0 mass% or less with respect to the entirety of the cosmetic material; and, if the cosmetic material contains component (D), the contained amount of component (D) is 25 mass% or less with respect to the entirety of the cosmetic material. (A) A hydrophobized particulate zinc oxide or a hydrophobized particulate titanium oxide. (B) A volatile solvent. (C) A hydrophilic organic compound that has fluidity at 25°C. (D) Water.

Description

cosmetics

The present invention relates to cosmetics.

Techniques for imparting desired properties to hair or skin are described in Patent Documents 1 to 5.
Patent Document 1 (Japanese National Publication of International Patent Application No. 2011-520882) describes a composition for imparting water repellency to keratin fibers. It is described to contain a certain proportion of volatile particulate material, and to contain a certain amount of volatile solvent, and may contain a certain amount of non-volatile solvent. The document also discloses that the first hydrophobic particulate material is selected from aluminum oxide, silicon dioxide, titanium dioxide, tin oxide, zinc oxide, zirconium dioxide, or combinations thereof, which have been surface-modified to have hydrophobicity. It is described that it consists of an oxide.

Patent Document 2 (International Publication No. 2003/075863) describes a non-volatile oil having a specific kinematic viscosity, a water-repellent resin powder having a specific size, an oil-soluble silicone resin, a volatile solvent, and a water-repellent surface. It describes a cosmetic that contains a specific amount of treatment content and exhibits water slipperiness, and such a cosmetic has stable water slipperiness that does not show temperature dependence, and is excellent in durability, feel, and UV protection effect. considered to be excellent.

Patent Document 3 (Japanese Patent Application Laid-Open No. 2007-238645) describes a technique for sufficiently reacting with the active groups on the surface and providing a surface treatment agent with good storage stability. and a powder treating agent comprising an organohydrogenpolysiloxane having a weight-average molecular weight, and a cosmetic containing powder surface-treated with such a powder treating agent.

Patent Document 4 (Japanese Patent Application Laid-Open No. 2007-1868) describes a cosmetic containing a gelling agent composed of a specific organopolysiloxane, and the gelling agent or the gel composition described in the same document is described. is said to provide cosmetics and cosmetics that are excellent in terms of aging stability, moisturizing properties, feel, gloss, curl retention, washability, anti-dripping properties, product appearance, and the like.

In addition, Patent Document 5 (Japanese National Publication of International Patent Application No. 2020-520965) describes a polymer, or a polymer and additionally other known cosmetic ingredients, for providing an anti-staining effect on human skin or human hair. The use of cosmetic products containing

Japanese Patent Publication No. 2011-520882 WO2003/075863 JP 2007-238645 A Japanese Unexamined Patent Application Publication No. 2007-1868 Japanese Patent Publication No. 2020-520965

According to the invention,
A cosmetic containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire cosmetic,
When the cosmetic contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire cosmetic,
When the cosmetic contains the following component (D), a cosmetic is provided in which the content of the component (D) is 25% by mass or less with respect to the entire cosmetic.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water

According to the invention,
A water repellent agent containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire water repellency imparting agent,
When the water repellency imparting agent contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire water repellency imparting agent,
When the water repellency imparting agent contains the following component (D), a water repellency imparting agent is provided in which the content of the component (D) is 25% by mass or less relative to the entire water repellency imparting agent.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water

According to the invention,
Provided is a water-repellent structure containing the dried cosmetic material of the present invention and having an arithmetic mean roughness (Ra) defined in JIS B0601;2001 of 0.1 μm or more and 3.0 μm.

According to the invention,
Provided is a method for producing a water-repellent structure on the surface of hair or skin, comprising applying the cosmetic of the present invention to hair or skin.

A method for imparting water repellency to hair or skin is provided, which comprises applying the cosmetic of the present invention to hair or skin.

Moreover, according to the present invention,
Provided is a method for treating hair or skin, comprising the following steps (i) and (ii), wherein step (ii) is performed after step (i).
(i) the step of applying the cosmetic of the present invention to the hair or skin; (ii) the step of evaporating the component (B) from the hair or skin;

According to the studies of the present inventors, there is still room for improvement in terms of stably imparting water repellency to the hair or skin while making the hair or skin have a smooth texture even using the techniques described in the above-mentioned patent documents. there were.

Therefore, in the present invention, it is possible to suppress deterioration of the smooth texture of hair or skin, stably impart water repellency to hair or skin, provide good appearance with suppressed whitening of hair or skin, and wash off easily. To provide a cosmetic excellent in the balance of each effect of

According to the present invention, it is possible to suppress deterioration of the smooth texture of hair or skin, stably impart water repellency to hair or skin, provide good appearance with suppressed whitening of hair or skin, and achieve good washing off. A cosmetic having an excellent balance of effects can be obtained.

Hereinafter, embodiments of the present invention will be described with specific examples of each component. In addition, in this embodiment, the composition can contain each component individually or in combination of 2 or more types.

(cosmetics)
In this embodiment, the cosmetic contains the following components (A) and (B), and the content of component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire cosmetic. . Further, when the cosmetic contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire cosmetic, and the cosmetic contains the following component (D) , the content of the component (D) is 25% by mass or less with respect to the entire cosmetic.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water

In this embodiment, the cosmetic is specifically applied to at least one of hair and skin, preferably applied to hair.
The inventor of the present invention has found that the cosmetic contains components (A) and (B), and the amount of components (C) and (D) in the cosmetic is within a specific range, thereby making the texture of hair or skin smooth. Furthermore, the inventors have found that the water repellency can be stably imparted to the hair or skin, and the washability is also good.
Further, according to the present embodiment, for example, water repellency, suppression of whitening of the appearance of hair or skin, smooth texture of hair or skin, washability with detergents such as surfactant compositions such as shampoo , and it is also possible to obtain a cosmetic having an excellent balance of dispersion stability.

(Component (A))
Component (A) is hydrophobized fine zinc oxide or hydrophobized fine titanium oxide, specifically one selected from hydrophobized fine zinc oxide and hydrophobized titanium oxide. It is composed of a particle group of the above particles.
The material of the base fine particles of component (A) is at least one of zinc oxide and titanium oxide. Moreover, the metal oxide contained in the entire fine particles of component (A) including the base fine particles and the coating layer is preferably at least one of zinc oxide and titanium oxide. The total content of metal oxides other than zinc oxide such as alumina and silica and titanium oxide in component (A) is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably. is 10% by mass or less, more preferably 5.0% by mass or less, and is 0% by mass or more than 0% by mass. When alumina is included as the metal oxide, the content of alumina in component (A) is preferably 5.0% by mass or less, more preferably 3.0% by mass or less, and still more preferably is 1.0% by mass or less. When silica is included as the metal oxide, the content of silica in component (A) is preferably 10% by mass or less, more preferably 7.0% by mass or less, and still more preferably 5% by mass. 0% by mass or less, more preferably 3.0% by mass or less, and 0% by mass or more than 0% by mass.

Specifically, the hydrophobizing treatment of the substrate particles may be any treatment that renders the surface of the fine zinc oxide or fine titanium oxide particles more hydrophobic than before the treatment.
Treatment agents for hydrophobizing substrate particles include, for example, dimethylpolysiloxane, methylhydrogenpolysiloxane, crosslinked silicone, fluorine-modified silicone, acrylic-modified silicone, cyclic silicone, one-end or both-end trialkoxy group-modified organopoly Silicone compounds such as siloxane and silicone resins; Surfactants such as anionic surfactants, cationic surfactants and nonionic surfactants; N-acylamino acids such as N-acylglutamic acid, N-acylaspartic acid and N-acyllysine , N-acyl amino acid esters and other amino acid derivatives, for example, N-lauroyl-L-glutamic acid di(phytosteryl-behenyl-2-octyldodecyl), dilauramidoglutamide lysine sodium; lecithin; metallic soap; methyltrimethoxysilane; Alkylsilanes such as ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, and triethoxycaprylylsilane; oils such as polyisobutylene, waxes, and oils; perfluoroalkyl phosphates, perfluoropolyethers, and perfluoropolyethers Fluorine compounds such as alkyl phosphate; polyvinylpyrrolidone (PVP) modified polymers such as polyvinylpyrrolidone-hexadecene copolymers; one or more selected from the group consisting of organic titanates such as isopropyl titanium triisostearate. From the viewpoint of improving the balance between the improvement of water repellency and the smoothness of hair or skin, the treatment agent is preferably an amino acid derivative, a silicone compound or an alkylsilane, more preferably a hydrogen dimethicone or an alkylsilane, and further. Preferred is triethoxycaprylylsilane.
As a method for treating the base particles with the treating agent, a commonly known method is used. Treatment methods include, for example, one or more methods selected from the group consisting of a wet method using a solvent, a vapor phase method, and a mechanochemical method. The treatment method can be selected, for example, according to the type of treatment agent.

Here, fine particles specifically mean particles having an average primary particle size of 0.1 nm or more and 1 μm or less.
The average primary particle size of component (A) is, for example, 0.1 nm or more, preferably 1 nm or more, from the viewpoint of improving the smoothness of hair or skin and facilitating washing off with a surfactant composition, It is more preferably 5 nm or more, still more preferably 10 nm or more.
In addition, from the viewpoint of improving water repellency, suppressing whitening of the appearance of hair or skin, and improving solution stability, the average primary particle size of component (A) is, for example, 1 μm or less, preferably 300 nm or less, and more. It is preferably 200 nm or less, more preferably 100 nm or less, still more preferably 50 nm or less, and still more preferably 35 nm or less.
Specifically, when the particles of component (A) are observed using a transmission electron microscope (TEM) or a scanning electron microscope (SEM), the average primary particle size of component (A) is the same as that of component (A A predetermined number of 200 particles of component (A) are selected, the longest linear portion (maximum major diameter) of each of these particles of component (A) is measured, and these measured values are weighted and averaged. Here, when the particles of component (A) are agglomerated, the particles of component (A) (primary particles ) are measured a predetermined number and taken as the average particle size.

The aspect ratio of the primary particles of component (A) is preferably 10 or less, more preferably 5 or less, and still more preferably 2 or less from the viewpoint of improving water repellency and improving dispersion stability of cosmetics. Further, the aspect ratio of the primary particles of component (A) is specifically 1 or more.
The "aspect ratio" as used herein means that when the particles of component (A) are observed using a transmission electron microscope (TEM) or a scanning electron microscope (SEM), the particles of component (A) are A predetermined number of 200 particles are selected, and the ratio of the length of the major diameter of the particles to the length of the minor diameter passing through the center of the major diameter; In the case of tabular particles, the minor axis is taken in the thickness direction and the ratio is measured.

In the cosmetic, component (A) is preferably dispersed as particles in component (B), which will be described later. At this time, the Z-average particle size of component (A) is preferably 30 nm or more, more preferably 50 nm or more, from the viewpoint of improving the smoothness of hair or skin and facilitating washing off with a surfactant composition. , more preferably 100 nm or more.
From the viewpoint of improving the stability of the solution, the Z-average particle size may be, for example, 2500 nm or less, preferably 500 nm or less, more preferably 400 nm or less, and still more preferably 300 nm or less.

Here, the Z-average particle size is a value obtained by analyzing the measurement data of the particle dispersion liquid obtained by the dynamic light scattering method using the cumulant analysis method. In the cumulant analysis method, an average particle size and a polydispersity index (PDI) are obtained, and this average particle size is defined as the Z-average particle size. Strictly speaking, the work of fitting a polynomial to the logarithm of the G1 correlation function obtained by measurement is called cumulant analysis, and the constant b in the following equation is called second-order cumulant or Z-average diffusion coefficient.
LN(G1)=A+bt+ct2 ⁺ ^dt3 + ^et4 +...
The Z-average particle size is obtained by converting the constant b into a particle size using the viscosity of the dispersion liquid and some apparatus constants.

Specifically, the Z-average particle size of the component (A) is measured by a particle size measuring device (for example, "Zeta sizer Nano ZS" manufactured by Malvern) using a dynamic light scattering method. As a measurement sample, a dispersion obtained by dispersing the component (A) in ethanol is used. The above dispersion should be prepared so that the concentration of component (A) is 1% by mass. A polymethyl methacrylate (PMMA) cell is set in the measurement unit of the particle size measuring device (“Zetasizer Nano ZS” manufactured by Malvern) using the dynamic light scattering method, and the dispersion liquid is separated into the PMMA cell. Then, the Z-average particle size of component (A) is measured.
More specifically, the Z-average particle size of component (A) is measured by the method described in Examples.

The content of component (A) in the cosmetic is 0.3% by mass or more, preferably 0.5% by mass or more, more preferably 0.8% by mass, based on the total amount of the cosmetic, from the viewpoint of improving water repellency. % by mass or more.
In addition, from the viewpoint of improving the smoothness of hair or skin, suppressing whitening of the surface of hair or skin, and facilitating washing off with a surfactant composition, the content of component (A) in the cosmetic is 10% by mass or less, preferably 9% by mass or less, more preferably 8% by mass or less, even more preferably 7% by mass or less, even more preferably 6% by mass or less, and even more preferably 6% by mass or less, based on the total amount of the cosmetic. is 4% by mass or less, particularly preferably 3% by mass or less.

Here, when the component (A) contains hydrophobized fine zinc oxide particles and hydrophobized fine particle titanium oxide particles, the content of component (A) specifically means the hydrophobized fine particles It is the sum of the content of zinc oxide and the content of hydrophobized microparticles of titanium oxide.

(Component (B))
Component (B) is a volatile solvent (excluding component (D)). Specifically, the volatile solvent is liquid at 25°C, has a boiling point of 260°C or lower at normal pressure (1013.25 hPa), and has a vapor pressure of 1.3 × 10 ^-2 Pa or higher at 25°C. refers to the solvent of
Component (B) is preferably one or two selected from the group consisting of silicones, lower alcohols having 3 or less carbon atoms and hydrocarbon oils, from the viewpoint of quickly volatilizing and imparting excellent water repellency to hair or skin. more preferably one or more selected from the group consisting of ethanol, decamethylcyclopentasiloxane, dimethicone and isododecane. That is, component (B) may be a single solvent or a mixture of two or more solvents.

As the silicone, specifically, one or more selected from the group consisting of linear and cyclic silicone oils having a boiling point of 260°C or less under 1013.25 hPa can be used. From the viewpoint of improving stability during storage, the boiling point at 1013.25 hPa is preferably 35° C. or higher.

Examples of chain volatile silicones include chain silicones represented by the following formula (1) or general formula (2) below, and cyclic volatile silicones are represented by the following general formula (3), for example. and cyclic silicones.

(In the above general formula (2), x is an integer of 0 or more and 5 or less.)

(In the above general formula (3), y is an integer of 3 or more and 6 or less.)

In addition, from the viewpoint of improving water repellency and improving the smoothness of hair or skin, the silicone is preferably a chain silicone represented by the above general formula (2) or a cyclic silicone represented by the above general formula (3), Dimethicone or decamethylcyclopentasiloxane is more preferred.

The lower alcohol having 3 or less carbon atoms is preferably a saturated monohydric alcohol having 1 or more and 3 or less carbon atoms, from the viewpoint of quickly volatilizing and quickly imparting water repellency to the hair or skin. The saturated monohydric alcohol is specifically one or more alcohols selected from the group consisting of methanol, ethanol, n-propyl alcohol and isopropyl alcohol, preferably ethanol.

Specific examples of hydrocarbon oils include those having a flash point of 35°C or higher and 87°C or lower.
Hydrocarbon oils include paraffinic hydrocarbon oils such as n-decane, n-undecane, n-dodecane; isodecane, isododecane, hydrogenated polyisobutene, etc. Isoparaffinic hydrocarbon oil; one or more selected from the group consisting of cyclic paraffinic hydrocarbon oils such as cyclodecane and cyclododecane, preferably hydrocarbon oils having 8 to 16 carbon atoms, more preferably is a hydrocarbon oil having 10 or more and 16 or less carbon atoms, more preferably a hydrocarbon oil having 12 carbon atoms. From the same point of view, the hydrocarbon oil is also preferably an isoparaffinic hydrocarbon oil, more preferably at least one of isododecane and hydrogenated polyisobutene having 12 carbon atoms, and still more preferably isododecane.
Examples of commercially available hydrocarbon oils include Marcazol R (manufactured by Maruzen Petrochemical Co., Ltd.: flash point 48 ° C.), Pearl Ream 3 (manufactured by NOF Corporation: flash point 61 ° C.), Creasil (trademark) ID CG (The Innovation Company).

The content of the component (B) in the cosmetic can be, for example, the remainder excluding components other than the component (B) in the cosmetic.
In addition, from the viewpoint of improving water repellency and improving solution stability, the content of component (B) in the cosmetic is preferably 70% by mass or more, more preferably 75% by mass, based on the entire cosmetic. Above, more preferably 79% by mass or more, still more preferably 85% by mass or more, still more preferably 90% by mass or more.
Further, from the viewpoint of improving water repellency, the content of component (B) in the cosmetic is specifically 99.7% by mass or less, preferably 99.5% by mass or less, more preferably 99.5% by mass or less, relative to the total. is 99.0 mass % or less, more preferably 98.0 mass % or less, and still more preferably 95.0 mass % or less.

In the cosmetic, the mass ratio of component (A) to component (B) ((A)/(B)) is preferably 0.003 or more, more preferably 0.008 or more, from the viewpoint of improving water repellency. is.
In addition, from the viewpoint of improving smoothness of hair or skin and suppressing whitening of the surface of hair or skin, the mass ratio ((A)/(B)) is preferably 0.20 or less, and more It is preferably 0.15 or less, more preferably 0.125 or less, and still more preferably 0.10 or less.

The cosmetic may consist of components (A) and (B), or may contain other components.

(Component (C))
Component (C) is a hydrophilic organic compound having fluidity at 25° C. (excluding component (B)).
Here, having fluidity at 25°C means that the viscosity at 25°C is 10000 mPa·s or less.
Specifically, the above viscosity is a viscosity measured by a B-type viscometer (for example, TOKI SANGYO VISCOMETER TVB-10M, manufactured by Toki Sangyo Co., Ltd.) at 25 ° C. For values around 10000 mPa·s, the viscosity is measured using rotor No. 4 under the conditions of 30 rpm for 1 minute.

Specific examples of hydrophilic organic compounds (excluding component (B)) having fluidity at 25° C. of component (C) include the following components (C1) to (C3).
(C1) an organic compound having a hydrogen bond term _δH of the Hansen solubility parameter of 2.0 MPa ^1/2 or more; (C2) a silicone having a nonionic hydrophilic group or amino group (excluding component (C1));
(C3) polyhydric alcohol polymer (excluding component (C1))
Each component will be described below.

(Component (C1))
In component (C1), the hydrogen bonding term of the Hansen Solubility Parameters is a DIY program using the software package HSPiP 4th Edition 4.1.07 based on Hansen Solubility Parameters: A User's Handbook, CRC Press, Boca Raton FL, 2007. δ _H (MPa ^1/2 ) calculated at 25° C. (energy term due to intermolecular hydrogen bonding: hereinafter also referred to as “hydrogen bonding term”).

Examples of component (C1) include aliphatic alcohols, aromatic alcohols, ether alcohols, alkyl ethers, N-alkylpyrrolidone, having a linear or branched alkyl group having 2 to 10 carbon atoms and one or more hydroxyl groups, Examples include organic compounds such as cyclic esters, non-cyclic esters, non-cyclic ethers, alkylamines which may have a hydroxyl group, and polyhydric alcohols.

Specific examples of the component (C1) are given below. The numerical value in parentheses in each example is the hydrogen bond term calculated by the method described above, and the unit is MPa ^1/2 .
As aliphatic alcohols having a linear or branched alkyl group having 2 to 10 carbon atoms and one or more hydroxyl groups, 1-propanol (14.7), 2-propanol (14.3), 1-butanol ( 15.2), lower alkanols such as 2-butanol (12.4); polyhydric alcohols such as hexylene glycol (15.0), octanediol (14.5), decanediol (12.8) be.
Aromatic alcohols include benzyl alcohol (12.4), cinnamyl alcohol (10.9), phenethyl alcohol (11.4), p-anisyl alcohol (12.1), p-methylbenzyl alcohol (11.2 ), phenoxyethanol (12.2), 2-benzyloxyethanol (10.8), phenylpropanol (10.2).
Isostearyl alcohol (6.0) is exemplified as a fatty alcohol.
Ether alcohols include ethylene glycol monoethyl ether (15.7), ethylene glycol monobutyl ether (13.0), diethylene glycol monomethyl ether (13.1), diethylene glycol monoethyl ether (11.9), diethylene glycol monobutyl ether (11.9). 7) and ethylhexyl glyceryl ether (13.1) are exemplified.
Examples of alkyl ethers include dimethyl ether (5.8).
Examples of N-alkylpyrrolidone include N-methylpyrrolidone (6.6), N-ethylpyrrolidone (7.0) and N-(2-hydroxyethyl)-2-pyrrolidone (13.5).
Examples of cyclic esters include γ-valerolactone (6.3), γ-caprolactone (5.7), γ-crotonolactone (8.1), and γ-butyrolactone (7.0).
As non-cyclic esters, diisostearyl malate (3.1), octyldodecyl lactate (4.7), ethyl lactate (14.4), butyl lactate (11.9), isononyl isononanoate (2.4), isotridecyl isononanoate (2.1), isopropyl palmitate (2.5), ethylhexyl palmitate (2.2), isopropyl isostearate (2.0), butyl stearate (2.5), myristyl myristate (2.3), isopropyl myristate (2.7), neopentyl glycol dicaprate (3.0), tricaproin (5.0), pentaerythrityl 2-ethylhexanoate (2.1), methoxycinnamic acid Ethylhexyl (4.5), sorbitan isostearate (9.1), ethylhexyl salicylate (6.1) are exemplified.
Isostearylglyceryl (7.5) is exemplified as an acyclic ether.
Examples of alkylamines which may have a hydroxyl group include methylamine (13.0), ethylamine (10.2), propylamine (8.5), butylamine (7.8), hexylamine (6.5), dimethyl Examples are amine (7.4), diethylamine (5.6), N,N-dimethylmonoethanolamine (13.1), aminomethylpropanol (14.4).
As polyhydric alcohols, glycerin (28.5), diglycerin (26.6), dipropylene glycol (17.5), 1,3-butylene glycol (21.4), propylene glycol (21.7), diethylene glycol (20.9), triethylene glycol (17.4), tetraethylene glycol (15.3) are exemplified.

From the viewpoint of improving water repellency, the cosmetic preferably does not contain organic compounds (excluding components (B) and ( _C )) having a δ _H of 2.0 MPa ^1/2 or more. It is more preferable not to contain an organic compound having a ^.delta.H of 1.0 _MPa.sup.1 ^/2 or more.
In addition, from the viewpoint of improving water repellency, the cosmetic preferably does not contain an organic compound having a δ _H of 30 MPa ^1/2 or less, and more preferably does not contain an organic compound having a δ _H of 35 MPa ^1/2 or less. More preferably, it does not contain an organic compound having a δ _H of 40 MPa ^1/2 or less.

(Component (C2))
Silicones having a nonionic hydrophilic group or amino group of component (C2) include polyoxyalkylene-modified silicones, glyceryl ether-modified silicones, alkylglyceryl ether-modified silicones, polyether/alkyl-modified silicones, amino-modified silicones, and aminopolyethers. Modified silicone; polyether-modified silicone, crosslinked organopolysiloxane, crosslinked polyether-modified silicone, crosslinked polyglycerin-modified silicone and the like.
The silicone chain of the polyether-modified silicone may be either linear or branched, and the component (C2) may be, for example, a polyoxyethylene/methylpolysiloxane copolymer or a modified product thereof, or poly(oxyethylene/oxypropylene). Examples include methylpolysiloxane copolymers or modified products thereof, silicone chain-branched polyoxyethylenemethylpolysiloxane copolymers, alkyl chain/silicone chain branched polyoxyethylenemethylpolysiloxane copolymers, and the like. The polyoxyethylene/methylpolysiloxane copolymer and the poly(oxyethylene/oxypropylene)methylpolysiloxane copolymer may be alkyl-modified.
Commercially available polyoxyethylene/methylpolysiloxane copolymers or modified products thereof used as component (C2) include "KF-6015" (PEG-3 dimethicone) and "KF-6016" manufactured by Shin-Etsu Chemical Co., Ltd. "(PEG-9 methyl ether dimethicone), "KF-6017" (PEG-10 dimethicone), "SS-2910" (PEG-10 dimethicone) manufactured by Dow Corning Toray, "SH3772M", "SH3773M" (above , PEG-12 dimethicone), "SH3775M" (PEG-12 dimethicone), and the like.
Commercially available poly(oxyethylene/oxypropylene) methylpolysiloxane copolymer or modified product thereof used as component (C2) includes "KF-6012" (PEG/PPG-20/ 22 butyl ether dimethicone), "KF-6026" (PEG/PPG-10/3 oleyl ether dimethicone), Shin-Etsu Chemical Co., Ltd. "KF-6048" (cetyl PEG/PPG-10/1 dimethicone), Toray Dow Corning "SH3749" (PEG/PPG-20/20 dimethicone), "BY22-008M", "BY11-030", "BY25-337" (above, PEG/PPG-19/19 dimethicone), "5200 Formulation" manufactured by Aid” (lauryl PEG/PPG-18/18 methicone), Momentive Performance Materials Japan’s “SF1528” and “SF1540” (PEG/PPG-20/15 dimethicone), Evonik Nutrition & Care GmbH’s “ABIL EM 97 S" (Bis-PEG/PPG-14/14 dimethicone) and the like.
Commercially available silicone chain-branched polyoxyethylenemethylpolysiloxane copolymers used as component (C2) include "KF-6028" (PEG-9 polydimethylsiloxyethyl dimethicone) manufactured by Shin-Etsu Chemical Co., Ltd. mentioned.
Examples of the alkyl chain/silicone chain branched polyoxyethylenemethylpolysiloxane copolymer include "KF-6038" (lauryl PEG-9 polydimethylsiloxyethyl dimethicone) manufactured by Shin-Etsu Chemical Co., Ltd., and the like.
Examples of commercially available polyether-modified silicones other than the above include "FZ-2222", "FZ-2233", and "FZ-2231" (linear polyether-modified silicones) manufactured by Dow Corning Toray Co., Ltd. be done.

Examples of the crosslinked organopolysiloxane used as component (C2) include (dimethicone/vinyl dimethicone) crosspolymer and (dimethicone/phenyl dimethicone) crosspolymer.
Examples of the (dimethicone/vinyl dimethicone) crosspolymer used as component (C2) include KSG-15, which is a mixture with decamethylcyclopentasiloxane, and KSG-16, which is a mixture with low-viscosity dimethylpolysiloxane (Shin-Etsu Chemical Kogyo Co., Ltd.) can be used.
As the (dimethicone/phenyl dimethicone) crosspolymer used as component (C2), commercially available products such as KSG-18 (manufactured by Shin-Etsu Chemical Co., Ltd.), which is a mixture with methylphenylpolysiloxane, can be used.
Crosslinked polyether-modified silicones used as component (C2) include, for example, KSG-210, KSG-240 (dimethicone/(PEG-10/15)) crosspolymer); KSG-310, KSG-320, KSG- 330 ((PEG-15/lauryl dimethicone) crosspolymer); KSG-340 ((PEG-10/lauryl dimethicone) crosspolymer and (PEG-15/lauryl dimethicone) crosspolymer) (manufactured by Shin-Etsu Chemical Co., Ltd.), etc. can be used.
Examples of the crosslinked polyglycerin-modified silicone used as component (C2) include KSG-710 ((dimethicone/polyglycerin-3) crosspolymer).

(Component (C3))
Specific examples of component (C3) include polyglycerin, polypropylene glycol, and polyethylene glycol.

Component (C) is preferably one or more selected from the group consisting of ethylhexyl methoxycinnamate, isopropyl palmitate, glycerin, polyether-modified silicone and polyethylene glycol.

Component (C), i.e., a hydrophilic organic compound having fluidity at 25°C, improves the affinity between the solid surface and water, and is presumed to act in the direction of making the water-repellent structure formed on the solid surface hydrophilic. Therefore, if the content of component (C) is too large, it is considered that the water repellency is lowered.
From the viewpoint of improving water repellency, the content of component (C) in the cosmetic is 5.0% by mass or less, preferably 3.0% by mass or less, more preferably 1.0% by mass, based on the total amount of the cosmetic. % by mass or less, still more preferably 0.1 mass % or less, and even more preferably substantially free of component (C). “Substantially free of component (C)” specifically means that component (C) is not intentionally added to the cosmetic, and more specifically, it is 0.01% by mass or less. . Moreover, the content of the component (C) is specifically 0% by mass or more than 0% by mass.
On the other hand, from the viewpoint of adjusting the feeling of hair or skin, the content of component (C) may be, for example, 0.1% by mass or more relative to the entire cosmetic composition.

The mass ratio of component (C) to component (A) ((C)/(A)) is determined from the viewpoint of improving water repellency, improving the dispersion stability of cosmetics, and suppressing whitening of hair or skin. , preferably 0.5 or less, more preferably 0.2 or less, still more preferably 0.1 or less, and even more preferably 0.05 or less.
Further, the mass ratio ((C)/(A)) is specifically 0 or greater than 0, and may be, for example, 0.01 or more.

(Component (D))
Component (D) is water.
The content of the component (D) in the cosmetic is 25% by mass or less, preferably 20% by mass or less, relative to the entire cosmetic, from the viewpoint of improving water repellency and improving the dispersion stability of the cosmetic. More preferably 15% by mass or less, still more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, and even more preferably 1% by mass or less. Further, the content of component (D) is specifically 0% by mass or more than 0% by mass.
On the other hand, from the viewpoint of improving the dispersion stability of the cosmetic, the content of component (D) is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, more preferably 0.010% by mass, based on the total amount of the cosmetic. % by mass or more is more preferable, 0.10% by mass or more is more preferable, and 0.50% by mass or more is more preferable.

The mass ratio of component (D) to component (A) ((D)/(A)) is preferably 20 or less, more preferably 20 or less, from the viewpoint of improving water repellency and improving dispersion stability of cosmetics. It is 10 or less, more preferably 5 or less, still more preferably 1 or less, and even more preferably 0.1 or less.
Also, the mass ratio ((D)/(A)) is preferably greater than 0, more preferably 0.001 or more, and still more preferably 0.01 or more.

Cosmetics may contain components other than components (A) to (D).
For example, cosmetics may contain oils (excluding components (B) and (C)). Such an oil agent is preferably a hydrophobic oil from the viewpoint of suppressing the influence on water repellency. Hydrophobic oils are specifically organic compounds whose hydrogen bonding term in the Hansen solubility parameter is less than 2.0 MPa ^1/2 . Also, the oil agent is preferably liquid at 25°C.
Further, as oil agents (excluding components (B) and (C)), specifically, squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene (excluding component (B)), hydrogenated polydecene, etc. hydrocarbon oils other than components (B) and (C); ester oils such as octyldodecyl myristate (δ _H 1.9) (excluding components (B) and (C)); silicones (component (B ) and (C) are excluded.) or two or more selected from the group consisting of:
Examples of silicones include those usually blended in toiletry products, such as octamethylpolysiloxane, methylpolysiloxane (dimethicone), dimethylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, etc. methylpolycyclosiloxane, trimethylsiloxysilicate, alkyl-modified silicone, aralkyl-modified silicone, fluorine-modified silicone, fatty acid ester-modified silicone, fluoroalkyl-modified silicone, epoxy-modified silicone, alcohol-modified silicone, methacryl-modified silicone, mercapto-modified Silicones, vinyl-modified silicones, modified silicones such as modified organopolysiloxanes described in JP-A-6-72851, etc., other than components (B) and (C).

The content of the oil agent (excluding components (B) and (C)) in the cosmetic is preferable relative to the entire cosmetic from the viewpoint of suppressing whitening of the appearance of the hair or skin and improving the smoothness of the hair or skin. is 0.1% by mass or more, more preferably 0.5% by mass or more, and still more preferably 1% by mass or more.
In addition, from the viewpoint of improving water repellency and facilitating washing off with a surfactant composition, the content of the oil agent (excluding components (B) and (C)) in the cosmetic is is preferably 10% by mass or less, more preferably 8% by mass or less, and even more preferably 5% by mass or less.

In addition, the cosmetic may further contain powder other than the component (A) within a range that does not impair the effects of the present invention. Specific examples of powders other than component (A) include pigments and plate-like powders.

Powders other than component (A) include powders that are commonly used in cosmetics, and have shapes such as spherical, plate-like, and needle-like; It can be used without being limited by the particle structure such as porosity. However, component (A) is excluded. Specifically, red iron oxide, iron hydroxide, iron titanate, yellow iron oxide, black iron oxide, carbon black, Prussian blue, ultramarine blue, manganese violet, cobalt violet, chromium oxide, chromium hydroxide, cobalt oxide, cobalt titanate, etc. colored pigments; titanium oxide (excluding component (A)), fine particle titanium oxide (excluding component (A)), zinc oxide (excluding component (A)), fine particle zinc oxide (component (A) ), zirconium oxide, magnesium oxide, cerium oxide, aluminum oxide (alumina), barium sulfate, calcium sulfate, magnesium sulfate, magnesium carbonate, calcium carbonate, talc, mica, kaolin, sericite, silicic acid, silicic anhydride (silica), aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, strontium silicate, metal tungstate, hydroxyapatite, vermiculite, bentonite, montmorillonite, hectorite, smectite, zeolite, White or extender pigments such as ceramic powder, dicalcium phosphate, boron nitride, and synthetic sericite can be used, and one or more of these can be used.
Regarding the particle size of the powder other than component (A), the average primary particle size is preferably 0.001 μm or more, more preferably 0.01 μm or more, from the viewpoint of suppressing whitening of hair or skin and improving smoothness. Also, it is preferably 10 μm or less, more preferably 5.0 μm or less.

Plate-like powders (excluding component (A)) are specifically plate-like cerium oxide, plate-like barium sulfate, talc, mica, plate-like kaolin, sericite, muscovite, plate-like synthetic mica, gold Mica, red mica, biotite, lethia mica, plate-like silicic anhydride, plate-like hydroxyapatite, bentonite, montmorillonite, hectorite, plate-like ceramic powder, plate-like alumina, plate-like boron nitride, plate-like iron oxide, titanium oxide One selected from the group consisting of coated mica, titanium oxide-treated mica, bismuth oxychloride, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, fish scale foil, titanium oxide-coated colored mica, aluminum, sheet glass powder, etc. or Two or more.

From the viewpoint of improving water repellency and facilitating washing off with a surfactant composition, the content of powder other than component (A) in the cosmetic is preferably 10% by mass or less relative to the entire cosmetic. Yes, preferably 8% by mass or less, more preferably 5% by mass or less.
On the other hand, from the viewpoint of adjusting the feel, the content of the powder other than the component (A) in the cosmetic may be, for example, 0.1% by mass or more relative to the entire cosmetic.

Cosmetics may further contain a hydrophobic acrylic polymer.
Specifically, the hydrophobic acrylic polymer is a hydrophobic polymer that dissolves in ethanol at 25° C. in an amount of 1% by mass or more and has a glass transition point (Tg) of 30° C. or higher. The hydrophobic acrylic polymer may be an anionic polymer, a cationic polymer, or a nonionic polymer. Hydrophobic acrylic polymers include, for example, cationic polymers, anionic polymers, and nonionic polymers, which will be described later. Examples thereof include copolymers containing acrylamide or styrene having linear or branched alkyl groups with 3 or more and 6 or less carbon atoms of 12 or less, and more specifically, hydrophobic polymers having structural units described later. mentioned.
Hydrophobic cationic polymers include, for example, polymers obtained by polymerizing styrene monomers and dimethylaminopropylacrylamide (DMAPAA) monomers.
Commercially available hydrophobic anionic polymers include, for example, Tilamar Fix A1000 (manufactured by DSM), Ultra hold Strong (manufactured by BASF), and Plussize L-9909B (manufactured by Goo Kagaku).
Commercially available hydrophobic nonionic polymers include, for example, PVB (model number BM-1, manufactured by Sekisui Chemical Co., Ltd.).

In addition, from the viewpoint of improving water repellency and facilitating washing off with a surfactant composition, the content of the hydrophobic acrylic polymer is preferably 10% by mass or less, preferably 8%, based on the total cosmetic composition. % by mass or less, more preferably 5% by mass or less.
On the other hand, from the viewpoint of adjusting the feel, the content of the hydrophobic acrylic polymer in the cosmetic may be, for example, 0.1% by mass or more relative to the entire cosmetic.

In addition, the cosmetic may contain a gelling agent. Specifically, dextrin palmitate, such as Leopard KL-2, manufactured by Chiba Flour Milling Co., Ltd., dibutylethylhexanoyl glutamide, such as EB-21, manufactured by Ajinomoto Co., Ltd., dibutyl lauroyl glutamide, such as GP-1, manufactured by Ajinomoto Co., etc. is mentioned.

In addition, the present cosmetic can be used as an aerosol spray by blending a propellant. Specific examples of the propellant include LPG (liquefied petroleum gas), DME (dimethyl ether), N ₂ (nitrogen), etc., which are generally blended in cosmetics.

In addition to the above ingredients, cosmetics can contain ingredients that are usually blended in cosmetics as appropriate. Antiseptic agents; chelating agents; moisturizing agents; coloring agents such as dyes and pigments; extracts; Antioxidants; pH adjusters; photocatalysts and the like.

On the other hand, the following components, solid fats, water-soluble thickeners, and non-volatile hydrocarbon oils (excluding components (B) and (C)) may be included, but are not included from the viewpoint of improving formulation stability. is preferred.
Specific examples of solid fats include alcohols having 12 to 22 carbon atoms, fatty acids having 12 to 22 carbon atoms, monoalkyl glyceryl ethers having 14 to 22 carbon atoms, waxes, esters, sterols, hydrocarbons, and solids at 25°C. Among silicones in the form of silicones, those which are non-volatile and solid at 25° C. can be mentioned.
Examples of nonvolatile solid alcohols having 12 to 22 carbon atoms at 25° C. include myristyl alcohol, cetanol, stearyl alcohol, and behenyl alcohol.
Examples of fatty acids having 12 to 22 carbon atoms that are non-volatile and solid at 25° C. include lauric acid, myristic acid, palmitic acid, stearic acid and behenic acid.
Examples of the monoalkyl glyceryl ether having 14 to 22 carbon atoms which are solid at 25° C. include monomyristyl glyceryl ether, monocetyl glyceryl ether, monostearyl glyceryl ether, monobehenyl glyceryl ether and the like.
Non-volatile solid waxes at 25° C. include beeswax, candelilla wax, carnauba wax, bayberry wax, jojoba wax, lanolin, shellac wax, whale wax, and Japanese wax.
Non-volatile solid esters at 25°C include glycerin monomyristate, glycerin monopalmitate, glycerin monostearate, glycerin monobehenate, glycerin monooleate, glycerin monoisostearate, and the like. C14-22 mono fatty acid glycerol esters; C14-22 mono fatty acid sorbitan esters such as sorbitan monomyristate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monobehenate; myristyl myristate; cholesteryl isostearate behenyl behenylate; glycerin trimyristate; dextrin fatty acid esters such as dextrin palmitate, dextrin stearate and dextrin behenate.
Examples of non-volatile solid sterols at 25° C. include cholesterol and phytosterols.
Examples of nonvolatile solid hydrocarbons at 25° C. include vaseline, ceresin, ozokerite, microcrystalline wax, candelilla wax, and the like.
Non-volatile solid silicones at 25°C include dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylphenylpolysiloxane, amino-modified silicone, carboxy-modified silicone, alcohol-modified silicone, alkyl-modified silicone such as stearyl dimethicone, and polyether. Among silicones such as modified silicone, fluorine-modified silicone, trimethylsiloxysilicate, and trifluoroalkyldimethyltrimethylsiloxysilicate (for example, silicone XS66-B8226, Momentive Performance Materials Japan), which are solid at 25 ° C. and silicone powders.
Specific examples of silicone powders include silicone resin powders, silicone elastomer powders, and silicone resin-coated silicone elastomer powders.
Examples of commercially available silicone powders include the TORAYFIL series manufactured by Dow Toray Industries, Inc. (eg TORAYFIL E505C, TORAYFIL E508) and the KSP series manufactured by Shin-Etsu Chemical Co., Ltd. (eg KSP-100, KSP-101, KSP-102 , KSP-105, KSP-1300) and the KMP series (KMP-590, KMP-591, KMP-592).

Specific examples of water-soluble thickeners include cellulose derivatives, polysaccharides modified with alkyl glyceryl ethers and sulfoalkyl, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, carboxyvinyl polymer, (acrylic acid/alkyl acrylate (C10 -30)) Acrylic thickeners such as copolymers, guar gum, hydroxyethyl guar gum, methyl guar gum, ethyl guar gum, dextrin, carrageenan, high polymer polyethylene glycol with a number average molecular weight exceeding 20,000, starch, carboxymethyl chitin, chitosan etc.
Cellulose derivatives are specifically compounds in which at least part of the hydroxyl groups of cellulose are substituted, and also include salts thereof. Examples of cellulose derivatives include cellulose ethers, cellulose esters, alkali metal salts such as sodium and potassium, and ammonium salts thereof.
Specific examples of cellulose ethers include carboxymethylcellulose, carboxyethylcellulose, carboxymethylethylcellulose, methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, benzylcellulose and salts such as sodium salts thereof.
Specific examples of cellulose esters include cellulose nitrate, cellulose sulfate, cellulose acetate, cellulose propionate, cellulose butyrate and other higher fatty acid celluloses.
Specific examples of acrylic thickeners include (meth)acrylic acid, (meth)acrylate or (meth)acrylamide homopolymers or copolymers containing these, and more specifically carboxyvinyl polymers, alkyl Examples include modified carboxyvinyl polymers, polyacrylamides, and copolymers containing at least one of acrylamide and acryloyldimethyltaurine as structural units.
Examples of carboxyvinyl polymers include Carbopol 940, Carbopol 941, Carbopol 980, Carbopol 981 (manufactured by Noveon Inc.), AQPEC HV-501E (manufactured by Sumitomo Seika Chemicals Co., Ltd.), Syntaren K, Syntaren L ( manufactured by Wako Pure Chemical Industries, Ltd.) and the like.
Examples of the alkyl-modified carboxyvinyl polymer include acrylic acid and alkyl methacrylate (preferably alkyl groups having 8 to 30).
Examples of polyacrylamide include Sepigel 305 (manufactured by Sepik).
Copolymers containing at least one of acrylamide and acryloyldimethyltaurine as structural units include copolymers of acrylamide and acrylate, copolymers of hydroxyethyl acrylate and acryloyldimethyltaurate, and acrylate and acryloyldimethyltaurate. A copolymer with a taurine salt, a copolymer of acrylic acid, acrylamide, an acrylate and an acryloyldimethyltaurate salt (polyacrylate-13) can be mentioned.
Copolymers of acrylamide and acrylate include Sepiplas 265 (manufactured by Seppic). Copolymers of hydroxyethyl acrylate and acryloyldimethyltaurate include Simalgel FL, Simalgel NS, Sepiplas S, and Sepinob EMT 10 (manufactured by Seppic). Examples of the copolymer of acrylate and acryloyldimethyltaurate include Simalgel EG (manufactured by Seppic). Copolymers of acrylic acid, acrylamide, acrylate and acryloyldimethyltaurate (polyacrylate-13) include (Sepiplus 400; manufactured by Seppic).

Specific examples of non-volatile hydrocarbon oils (excluding components (B) and (C)) include squalene, squalane, liquid paraffin, liquid isoparaffin, heavy liquid isoparaffin, α-olefin oligomer, cycloparaffin, polybutene, petrolatum, paraffin wax, microcrystalline wax, polyethylene wax, ceresin and the like.

Next, a method for producing cosmetics will be described.
Cosmetics can be obtained, for example, by blending components (A) and (B) and optionally other components in a predetermined order and sufficiently dispersing component (A) in component (B).

In this embodiment, the cosmetic can be used, for example, in hair or skin treatment methods. Specifically, the treatment method in this embodiment includes the following steps (i) and (ii), and the step (ii) is performed after the step (i).
(i) the step of applying the cosmetic of the present embodiment to the hair or skin (ii) the step of evaporating the component (B) from the hair or skin

Step (i) may be, for example, applying a cosmetic to the hair or skin by painting or spraying.
When the cosmetic is applied to hair, the ratio of the mass of the cosmetic to the hair (bath ratio) is preferably 0.05 or more, more preferably 0.1 or more, and still more preferably 0.25 or more. It is more preferably 0.5 or more, and preferably 5.0 or less, more preferably 3.0 or less, still more preferably 1.5 or less, still more preferably 1.0 or less. The hair to be treated may be all or part of the hair. When the application target is the skin, the application amount is preferably about 1 g for both hands.
As for the application method, an appropriate amount may be applied to fingers or a tool such as a comb, brush, brush, sponge, or the like, or may be applied directly to the application site. Moreover, it is preferable to apply the composition evenly.
Step (ii) may be, for example, a step of naturally drying the hair or skin to which the cosmetic has been applied at room temperature (25°C). Evaporation may also be accelerated by moving the hair or skin to which the cosmetic has been applied, or blowing the hair or skin.
The dosage form of the cosmetic of the present embodiment is not limited, and may be, for example, foam, hair mascara, gel, mist, aerosol spray, cream, wax, lotion, roll-on, sheet shape, or the like. A preferred method is to use a mist or aerosol type spray as the cosmetic, apply it to the hair or the entire skin, and then dry it with a dryer or the like.

The treatment method may further comprise, after step (ii), step (iii): applying a composition comprising a surfactant and rinsing with water. Application methods include, for example, painting or spraying.
As a composition containing a surfactant, specifically, a composition commonly used as a hair cleanser or a skin cleanser may be mentioned, and may be, for example, liquid, foam or mist, preferably liquid.
The surfactant can be, for example, a component commonly used in hair cleansing agents or skin cleansing agents, and preferably includes anionic surfactants. Preferred anionic surfactants are those listed below. Contains one or more selected from the group consisting of

Examples of anionic surfactants include sulfate ester salts, sulfosuccinate ester salts, sulfonates, higher fatty acid salts, phosphate ester salts, amino acid-based surfactants, and alkyl ether carboxylates having hydrophobic sites. Specifically, sulfate salts having a hydrophobic moiety such as alkyl sulfates, alkenyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, and polyoxyalkylene alkylphenyl ether sulfates;
sulfonates having a hydrophobic moiety such as sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, alkanesulfonates, acyl isethionates, acyl methyl taurate;
Higher fatty acid salt having 8 or more and 16 or less carbon atoms;
Phosphate ester salts having hydrophobic sites such as alkyl phosphates and polyoxyalkylene alkyl ether phosphates are included.

Among these, from the viewpoint of improving the detergency, foamability and foam quality of compositions containing surfactants, and from the viewpoint of obtaining ease of loosening during rinsing, anionic surfactants such as sodium lauryl sulfate are used. Alkyl sulfates; polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate, higher fatty acid salts having 8 to 16 carbon atoms such as potassium laurate, alkyl sulfosuccinate salts such as sodium laureth-2 sulfosuccinate is preferred.

The treatment method may further comprise, prior to step (ii), step (iv): applying a composition comprising a surfactant and rinsing with water. Application methods include, for example, painting or spraying.
Compositions containing surfactants include, specifically, compositions commonly used as hair conditioners and skin care agents, which are liquid, foamy, or misty, with liquid being preferred.
The surfactant can be, for example, a component commonly used in hair cleansers or skin cleansers, and preferably includes a cationic surfactant. Preferred cationic surfactants include the following. Contains one or more selected from the group consisting of

Specific examples of cationic surfactants include alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylamines and their salts, alkoxyalkyldimethylamines and their salts, alkylamidoamines and their salts, and the like. .
More specifically, the cationic surfactant is one or more selected from the group consisting of monoalkyltrimethylammonium chloride, dialkyldimethylammonium chloride, monoalkyloxyalkyltrimethylammonium chloride and monoalkyltrimethylammonium bromide. mentioned. Cationic surfactants are preferably behenyltrimethylammonium chloride, stearyltrimethylammonium chloride (steartrimonium chloride), cetyltrimethylammonium chloride (cetrimonium chloride), lauryltrimethylammonium chloride (lauryltrimonium chloride), dialkyl chloride (C12 C18) One or more selected from the group consisting of dimethylammonium and octadecyloxypropyltrimethylammonium chloride.

In this embodiment, water repellency can be imparted to hair or skin by using a cosmetic. That is, the method of imparting water repellency to the hair or skin of the present embodiment includes, for example, applying the cosmetic of the present embodiment to the hair or skin, preferably applying the cosmetic of the present embodiment to the hair or skin. including applying by painting or spraying on.
In addition, the method of imparting water repellency to hair or skin includes, for example, applying a primer to the surface of the hair or skin, and after applying the primer, further coating the cosmetic of the present embodiment thereon. may include doing Specific examples of base agents include hair or skin cosmetics such as care agents and styling agents.

In addition, in this embodiment, a water-repellent structure can be produced on the hair surface or skin surface by using cosmetics. That is, the method for producing a water-repellent structure on the surface of hair or skin in the present embodiment includes, for example, applying the cosmetic in the present embodiment to hair or skin, preferably the cosmetic in the present embodiment. to the hair or skin by painting or spraying.

Moreover, a water-repellent structure can also be obtained using the cosmetics in this embodiment.
Specifically, the water-repellent structure contains the cosmetic of the present embodiment, and more specifically consists of the dried cosmetic of the present embodiment. Moreover, the water-repellent structure is, for example, a structure formed by applying the cosmetic material of the present embodiment and drying it. The water-repellent structure is preferably formed on hair or skin.
The water-repellent structure can be obtained, for example, by coating or spraying the cosmetic composition of the present embodiment onto a substrate such as hair or skin and drying the composition.
In addition, before applying the cosmetic material of the present embodiment, the above-described base agent may be applied to the base material, and at this time, the water-repellent structure may further contain a component of the base agent.

The arithmetic mean roughness (Ra) of the water-repellent structure defined in JIS B0601; From the viewpoint of facilitating washing off with the agent composition, the thickness is, for example, 0.10 μm or more, preferably 0.20 μm or more, and more preferably 0.50 μm or more.
In addition, from the viewpoint of improving water repellency and suppressing whitening of the appearance of hair or skin, the arithmetic average roughness (Ra) is, for example, 3.0 μm or less, preferably 2.5 μm or less, more preferably 2.0 μm. It is below.

(Water repellency imparting agent)
In this embodiment, the cosmetic can be used, for example, as a water repellent agent. That is, in the present embodiment, the water repellency imparting agent contains the above-described components (A) and (B), and the content of component (A) is 0.3% by mass or more and 10% by mass with respect to the entire cosmetic. % or less. Further, when the cosmetic contains the above-described component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire cosmetic, and when the cosmetic contains the above-described component (D) , the content of the component (D) is 25% by mass or less with respect to the entire cosmetic.
Concerning the composition of the water repellency-imparting agent, specifically, the composition described above for cosmetics can be adopted.

Although the embodiments of the present invention have been described above, these are examples of the present invention, and various configurations other than those described above can also be adopted.

In relation to the above-described embodiments, the present invention further discloses the following cosmetics, water repellency imparting agents, water repellent structures and methods for producing the same, methods for imparting water repellency to hair or skin, and methods for treating hair or skin. do.
<1> A cosmetic containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire cosmetic,
When the cosmetic contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire cosmetic,
A cosmetic containing the following component (D), wherein the content of the component (D) is 25% by mass or less based on the total amount of the cosmetic.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water

<2> The total content of metal oxides other than zinc oxide and titanium oxide in component (A) is preferably 20% by mass or less, more preferably 15% by mass or less, and still more preferably 10% by mass. The cosmetic according to <1>, which is 5.0% by mass or less, more preferably 5.0% by mass or less.
<3> Component (A) has an average primary particle size of, for example, 0.1 nm or more, preferably 1 nm or more, more preferably 5 nm or more, still more preferably 10 nm or more, and, for example, 1 μm or less. , preferably 300 nm or less, more preferably 200 nm or less, still more preferably 100 nm or less, still more preferably 50 nm or less, still more preferably 35 nm or less, the cosmetic according to <1> or <2> .
<4> The content of component (A) in the cosmetic is 0.3% by mass or more, preferably 0.5% by mass or more, more preferably 0.8% by mass or more, relative to the entire cosmetic. Also, it is 10% by mass or less, preferably 9% by mass or less, more preferably 8% by mass or less, even more preferably 7% by mass or less, even more preferably 6% by mass or less, and even more preferably 4% by mass. The cosmetic according to any one of <1> to <3>, particularly preferably 3% by mass or less.
<5> Component (B) is one or more selected from the group consisting of silicones, lower alcohols having 3 or less carbon atoms and hydrocarbon oils; more preferably saturated monovalent compounds having 1 to 3 carbon atoms alcohol, one or more silicones selected from the group consisting of linear and cyclic silicone oils having a boiling point of 260° C. or less under 1013.25 hPa, and carbonization having a flash point of 35° C. or higher and 87° C. or lower One or two or more selected from the group consisting of hydrogen oil; more preferably one or two or more selected from the group consisting of ethanol, decamethylcyclopentasiloxane, dimethicone and isododecane <1 > The cosmetic according to any one of <4>.
<6> The content of component (B) in the cosmetic is preferably 70% by mass or more, more preferably 75% by mass or more, still more preferably 79% by mass or more, and still more preferably 85% by mass or more, more preferably 90% by mass or more, and for example, 99.7% by mass or less, preferably 99.5% by mass or less, more preferably 99.0% by mass or less, and still more preferably The cosmetic according to any one of <1> to <5>, which is 98.0% by mass or less, more preferably 95.0% or less.
<7> The mass ratio of component (A) to component (B) ((A)/(B)) is preferably 0.003 or more, more preferably 0.008 or more, and preferably 0 0.20 or less, more preferably 0.15 or less, still more preferably 0.125 or less, and still more preferably 0.10 or less, according to any one of <1> to <6>.
<8> Component (C) is preferably one or more of the following components (C1) to (C3), more preferably ethylhexyl methoxycinnamate, isopropyl palmitate, glycerin, polyether-modified silicone and The cosmetic according to any one of <1> to <7>, which is one or more selected from the group consisting of polyethylene glycol.
(C1) an organic compound having a hydrogen bond term _δH of the Hansen solubility parameter of 2.0 MPa ^1/2 or more; (C2) a silicone having a nonionic hydrophilic group or amino group (excluding component (C1));
(C3) polyhydric alcohol polymer (excluding component (C1))
<9> The content of component (C) in the cosmetic is preferably 5.0% by mass or less, preferably 3.0% by mass or less, more preferably 1.0% by mass, based on the total amount of the cosmetic. The cosmetic according to any one of <1> to <8>, furthermore preferably 0.1% by mass or less, and even more preferably 0.01% by mass or less.
<10> The mass ratio of component (C) to component (A) ((C)/(A)) is 0 or greater than 0, and may be, for example, 0.01 or more, and preferably 0.01 or more. The cosmetic according to any one of <1> to <9>, which is 5 or less, more preferably 0.2 or less, still more preferably 0.1 or less, and even more preferably 0.05 or less.
<11> The content of component (D) in the cosmetic is, for example, 0.001% by mass or more, preferably 0.005% by mass or more, more preferably 0.010% by mass or more, and further It is preferably 0.10% by mass or more, still more preferably 0.50% by mass or more, and is 25% by mass or less, preferably 20% by mass or less, more preferably 15% by mass or less, and still more preferably 10% by mass. The cosmetic according to any one of <1> to <10>, which is 5% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, and even more preferably 1% by mass or less.
<12> The mass ratio of component (D) to component (A) ((D)/(A)) is specifically 0 or greater than 0, for example 0.01 or more, and Any one of <1> to <11>, which is preferably 20 or less, more preferably 10 or less, still more preferably 5 or less, even more preferably 1 or less, and still more preferably 0.1 or less Cosmetics as described.
<13> The component (A) in the component (B) preferably has a Z-average particle size of preferably 30 nm or more, more preferably 50 nm or more, still more preferably 100 nm or more, and more preferably 500 nm or less. is dispersed as particles of 400 nm or less, more preferably 300 nm or less, according to any one of <1> to <12>.
<14> Containing components other than components (A) to (D), preferably containing oils (excluding components (B) and (C)), more preferably carbonizing other than components (B) and (C) Hydrogen oil, ester oil other than components (B) and (C), and silicones other than components (B) and (C), more preferably octyl myristate The cosmetic according to any one of <1> to <13>, containing at least one of dodecyl and squalane.
<15> Any one of <1> to <14>, containing none of solid fat, water-soluble thickener and non-volatile hydrocarbon oil (excluding components (B) and (C)) cosmetics.
<16> The cosmetic according to any one of <1> to <15>, which is a hair cosmetic.
<17> The cosmetic according to any one of <1> to <16>, which is in the form of foam, hair mascara, gel, mist, aerosol spray, cream, wax, lotion, roll-on or sheet.
<18> A water repellency imparting agent containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire water repellency imparting agent,
When the water repellency imparting agent contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire water repellency imparting agent,
A water repellency-imparting agent, wherein when the water repellency-imparting agent contains the following component (D), the content of the component (D) is 25% by mass or less relative to the entire water repellency-imparting agent.
(A) Hydrophobized microparticle zinc oxide or hydrophobized microparticle titanium oxide (B) Volatile solvent (C) Hydrophilic organic compound having fluidity at 25°C (D) Water <19><1> ~ including the dried cosmetic according to any one of <17>, preferably consisting of the dried cosmetic,
Arithmetic mean roughness (Ra) defined in JIS B0601; , preferably 2.5 μm or less, more preferably 2.0 μm or less.
<20> Including applying the cosmetic according to any one of <1> to <17> to the hair or skin, preferably including applying the cosmetic to the hair or skin by coating or spraying. , a method for producing a water-repellent structure on the surface of hair or skin.
<21> Including applying the cosmetic according to any one of <1> to <17> to the hair or skin, preferably including applying the cosmetic to the hair or skin by coating or spraying. , a method for imparting water repellency to hair or skin.
<22> A method for treating hair or skin, comprising the following steps (i) and (ii), wherein the step (ii) is performed after the step (i).
(i) the step of applying the cosmetic according to any one of <1> to <17> to the hair or skin (ii) the step of evaporating the component (B) from the hair or skin <23> the step The treatment method according to <22>, further comprising, after (ii), step (iii): applying a surfactant solution and rinsing with water.

(Examples 1 to 29, Comparative Examples 1 to 11)
Cosmetics having compositions shown in Tables 1 to 5 were prepared and evaluated. The preparation method and evaluation method of cosmetics are shown below.

(Method for preparing cosmetics)
Each component was mixed according to the following procedure according to the formulations shown in Tables 1 to 5 to prepare the cosmetics of each example.
Component (A) is mixed with Component (B), Component (C), Component (D) and other components are added to the resulting mixture, and Component (A) is sufficiently dispersed in Component (B) at room temperature. let me

(Evaluation method)
After applying 0.3 g of the cosmetics shown in Tables 1 to 5 to a hair bundle for evaluation (0.1 g, 23 cm virgin hair) (bath ratio 3:1) and letting it spread evenly, it was dried (IB, manufactured by SHARP). -HD095) was applied for 1 minute for drying. After that, it was allowed to stand at 25° C. and 21% RH for 1 hour.
However, in Examples 25, 26 and 27, the amount of the cosmetic applied was 0.1 g, 0.05 g and 0.01 g (the liquor ratio was 1:1, 0.5:1 and 0.1:1 respectively). ).
"Water repellency", "appearance of hair bundle", "smoothness of hair", and "removal by shampooing" immediately after application of the cosmetic were evaluated according to the following evaluation criteria. In addition, "solution stability" was evaluated for some examples. The results are also shown in Tables 1 to 5.

(water repellency)
The water repellency was evaluated using the amount of water absorbed by the hair bundle for evaluation (the weight increase rate of the hair bundle) as an index. The measurement of the weight increase rate of the hair bundle was performed by the following procedure.
1. The weight of the evaluation hair tresses treated as described above in the evaluation method was measured. Three hair tresses were measured, and the average value was taken as W ₀ [g].
2. After that, the treated tresses were run under tap water (12° C.) for 5 seconds and weighed. Three hair tresses were measured, and the average value was taken as W ₁ [g].
In addition, when water droplets remained on the surface, the measurement was performed after lightly shaking the hair bundle by hand to remove it.
3. 1 above. and 2. The amount of water absorbed by the hair was evaluated from the weight increase rate of the hair tress.
Hair bundle weight increase rate [%] = (W ₁ -W ₀ )/0.1*100

(appearance of hair)
Regarding the appearance of the hair (hair bundle), five professional panelists visually evaluated the hair bundle treated by the procedure described in the evaluation method section, and found that "almost the same as untreated hair" / "untreated hair". The hair was slightly whiter than the hair"/"slightly whiter than the untreated hair"/"clearly whiter than the untreated hair". The evaluation was made into the following 4 grades, and judged using the total score of 5 persons.
4: Almost the same as untreated hair 3: Slightly whiter than untreated hair 2: Slightly whiter than untreated hair 1: Clearly whiter than untreated hair

(Smoothness of hair)
The smoothness of hair was evaluated as follows. Three hair tresses treated by the procedure described in the evaluation method section were put together and fixed at the root to prepare a 0.3 g hair tress. Five professional panelists passed the hair tress from the root to the tip of the hair 5 times through a jumbo comb (brand name: Finish Comb No. 215, large), and evaluated the hair on a 5-point scale according to the following criteria. Judgment was made using the total score of five persons.
5: Does not feel stuck 4: Does not feel stuck much 3: Can't say either way 2: Feels slightly stuck 1: Feels stuck quite a bit

(washed out with shampoo)
0.2 g of the plain shampoo solution described below was applied to the tresses treated according to the procedure described in the evaluation method section, and after lathering for 30 seconds, the tresses were rinsed with running water at 35°C for 30 seconds and dried with a dryer.
After that, five panelists were asked whether it was "same feel as untreated hair" / "slightly squeaky / caught" / "slightly squeaky / caught" / "squeaky / caught". selected alternatively. Evaluation was made into the following four-grade evaluation, and it determined using five persons' total point.
4: Feels as smooth as untreated hair 3: Slightly squeaky and caught 2: Slightly squeaky and caught 1: Squeaky and caught

Composition of plain shampoo (pH 6.9) (mass%)
Polyoxyethylene lauryl ether sodium sulfate
(Emal 170J, manufactured by Kao Corporation, effective content 70% by mass) 13.0
coconut oil fatty acid monoethanolamide
(Amisol CME, manufactured by Kawaken Fine Chemicals) 0.6
Coconut fatty acid amidopropyl carbobetaine
(Amphitol 55AB, manufactured by Kao Corporation, effective content 30% by mass) 1.41
Citric acid pH adjustment amount
Sodium benzoate 0.3
Remaining amount of purified water

The pH of the plain shampoo was measured at room temperature (25°C) using a pH meter F-52 manufactured by Horiba, Ltd.

(Z average particle size)
In some examples, the Z-average particle size was measured using a particle size/zeta potential measuring device Zetasizer Nano ZS (manufactured by Malvern). The measurement conditions were as follows: after one day had passed, about 3.0 mL of the cosmetic to be measured was placed in a PMMA (polymethyl methacrylate) cell (when sedimentation was observed, the sample was shaken 4 to 5 times by hand to disperse it). and placed in the measuring section and measured at a temperature of 25°C. Measurement conditions in examples other than Examples 28 and 29 are shown below.
(Measurement condition)
Sample-Material: ZnO (RI: 2.00), _TiO2 (RI: 2.493), _SiO2 (RI: 1.45), _Al2O3 ₍ RI: 1.63)
Sample - Dispersant: Ethanol (RI: 1.256, Viscosity: 1.0960)
Measurement-Measurement angle: 173° Backscatter (NIBS default)
Measurement-Measurement duration: Automatic
Data processing - General purpose (normal resolution)

In addition, the Z-average particle size described in Examples 28 and 29 was measured using a particle size/zeta potential measuring device Zetasizer Nano ZS (manufactured by Malvern). The measurement conditions were as follows: After 1 hour, about 3.0 mL of the hair cosmetic to be measured was added to PMMA (polymethyl methacrylate) (when sedimentation was observed, the sample was shaken 4 to 5 times to disperse it by hand). It was filled in a cell, placed in a measuring section, and measured at a temperature of 25°C. Measurement conditions are shown below.
(Measurement condition)
Sample-Material: ZnO (RI: 2.00), _TiO2 (RI: 2.493), _SiO2 (RI: 1.45), _Al2O3 ₍ RI: 1.63)
Sample - Dispersant: Isododecane (RI: 1.421, Viscosity: 1.3500)
Measurement-Measurement angle: 173° Backscatter (NIBS default)
Measurement-Measurement duration: Automatic
Data processing - General purpose (normal resolution)

(Surface roughness)
In some examples described in Table 1, 0.2 g of the cosmetics shown in Tables 1 and 2 were dropped onto a PP (PPN-050502 manufactured by AS ONE Co., Ltd.) plate of 2 cm x 2 cm, and the mixture was heated at 25°C and 30% RH for 2 hours. It was allowed to stand and dried to form a water-repellent structure. Subsequently, the surface roughness of the water-repellent structure obtained on the PP plate surface was measured using a laser microscope "VK-8700" manufactured by Keyence Corporation, with an objective lens magnification of 100 × and a Z measurement pitch of 0.1 μm (measurement mode: Measurement was performed on 10 arbitrarily selected 3.0 μm×3.0 μm regions under the conditions of surface shape, measurement area: surface), and the arithmetic mean roughness (Ra) was determined according to JIS B0601;2001. Incidentally, when the untreated PP substrate surface was measured, it was Ra: 0.04 μm.

In Tables 1 to 5, the compounding amount of each component is the active amount, and "(%)" is "(% by mass)". Details of the components listed in Tables 1 to 5 are as follows. In the following description of component (A), the numerical value in parentheses is the average primary particle size.
(Component (A))
*1 Zinc oxide, triethoxycaprylylsilane: triethoxycaprylylsilane (OTS)-treated zinc oxide, manufactured by Sakai Chemical Industry Co., Ltd., FINEX-50-OTS (20 nm)
*2 Zinc oxide, triethoxycaprylylsilane: Triethoxycaprylylsilane (OTS)-treated zinc oxide, manufactured by Sakai Chemical Industry Co., Ltd., FINEX-30-OTS (35 nm)
*3 Zinc oxide, triethoxycaprylylsilane: Triethoxycaprylylsilane (OTS)-treated zinc oxide, OTS ZnO-660DM (25 nm) manufactured by Daito Kasei Kogyo Co., Ltd.
*4 Zinc oxide, triethoxycaprylylsilane: triethoxycaprylylsilane (OTS)-treated zinc oxide, OTS-5 MZ-500 (25 nm) manufactured by Daito Kasei Kogyo Co., Ltd.
* 5 zinc oxide, hydrogen dimethicone: Hydrogen dimethicone-treated zinc oxide, Sakai Chemical Industry Co., Ltd., FINEX-50S-LP2 (20 nm)
* 6 Zinc oxide, hydrogen dimethicone: Hydrogen dimethicone-treated zinc oxide, manufactured by Sakai Chemical Industry Co., Ltd., NANOFINE 50-LP (20 nm)
*7 Titanium oxide, hydrous silica, triethoxycaprylylsilane: triethoxycaprylylsilane (OTS)-treated titanium oxide, manufactured by Sakai Chemical Industry Co., Ltd., STR-100W-OTS (15 nm)
*19 Zinc oxide, triethoxycaprylylsilane: Triethoxycaprylylsilane-treated zinc oxide (280 nm), fine zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd.) was surface-treated with triethoxycaprylylsilane.

(Component (B))
*8 Ethanol: 99 degree synthetic alcohol, manufactured by Japan Synthetic Alcohol *9 Decamethylcyclopentasiloxane (D5): DOWSIL (trademark) SH 245 Fluid, manufactured by Dow Toray *10 Dimethicone: Silicone KF-96L-2CS, Shin-Etsu Chemical Industry Co., Ltd. *11 Isododecane: Marcazol R, Maruzen Petrochemical Co., Ltd. *29 Isododecane: Creasil (trademark) ID CG, The Innovation Company, moisture content less than 50 ppm

(Component (C))
*12 (C1) Ethylhexyl methoxycinnamate: Ubinal MC80, manufactured by BASF, δ _H = 4.5 MPa ^1/2
*13 (C1) Isopropyl palmitate: Excepar IPP, manufactured by Kao Corporation, δ _H =2.5 MPa ^1/2
*14 (C1) Glycerin: Concentrated glycerin for cosmetics, manufactured by Kao Corporation, δ _H = 28.5 MPa ^1/2
*15 (C2) Polyether-modified silicone (PEG-12 dimethicone): DOWSIL SH 3775 M FLUID, manufactured by Dow Toray *16 (C3) Polyethylene glycol: PEG-600, manufactured by Sanyo Chemical Industries, Mw: 600

(others)
*17 Octyldodecyl myristate: MOD, manufactured by Shinei Chemical Co., Ltd., δ _H = 1.9 MPa ^1/2
*18 Squalane: NIKKOL Sugar Squalane, manufactured by Nikko Chemicals, δ _H = 0.0 MPa ^1/2
*20 Fumed silica, trimethylsilyl: hexamethyldisilazane-treated silica, Nippon Aerosil, AEROSIL RX200 (12 nm)
*21 Fumed Alumina, Triethoxycaprylylsilane: Triethoxycaprylylsilane treated alumina (18 nm), SpectrAl™ 100 Fumed Alumina (Cabot Specialty Chemicals, Inc.) surface treated with triethoxycaprylylsilane .

From Tables 1 to 5, the cosmetics obtained in each example had an excellent balance among the effects of imparting water repellency to hair, appearance of hair, smoothness of hair, and washing off with shampoo. In addition, the cosmetics in each example were suitable as hair cosmetics.

(prescription example)
Formulation examples of cosmetics are shown below. The cosmetic of each formulation example can be suitably used, for example, as a hair cosmetic.

(Prescription example 1)
Cosmetic label name (% by mass)
Zinc oxide, triethoxycaprylylsilane *1 1
Polymethylsilsesquioxane *22 1
Ethanol *8 98

(Prescription example 2)
Cosmetic label name (% by mass)
Zinc oxide, triethoxycaprylylsilane *1 1
(vinyl dimethicone/methicone silsesquioxane)
Crosspolymer *23 1
Ethanol *8 98

(Prescription example 3)
Cosmetic label name (% by mass)
Zinc oxide, triethoxycaprylylsilane *1 1
trifluoroalkyldimethyltrimethylsiloxysilicate,
Cyclopentasiloxane, hydrogenated polyisobutene *24 1
Ethanol *8 98

(Prescription example 4) Roll-on type
Cosmetic label name (% by mass)
Zinc oxide, triethoxycaprylylsilane *1 1
Ethanol *8 99
The cosmetic of this example is specifically a hair cosmetic, and when it is used by being filled in a commercially available container, uniform application properties are excellent.

(Prescription Example 5) Oil gel
Cosmetic label name (% by mass)
Zinc oxide, triethoxycaprylylsilane *1 1
Dextrin palmitate *25 2
Isododecane *11 97

(Prescription example 6)
Cosmetic label name (% by mass) Breakdown (% by mass)
Stock solution 50
Zinc oxide, triethoxycaprylylsilane *1 1
Ethanol *8 99
propellant 50
LPG *26 100

(Prescription example 7)
Cosmetic label name (% by mass) Breakdown (% by mass)
Stock solution 50
Zinc oxide, triethoxycaprylylsilane *1 1
Ethanol *8 99
propellant 50
LPG *27 30
DME *28 70

Among the ingredients described in the formulation examples, the details of the ingredients other than those mentioned above are as follows.
*22 Polymethylsilsesquioxane: KMP-590, manufactured by Shin-Etsu Chemical *23 (Vinyl dimethicone/methicone silsesquioxane) crosspolymer: KSP-105, manufactured by Shin-Etsu Chemical *24 Trifluoroalkyldimethyltrimethylsiloxysilicate , Cyclopentasiloxane, hydrogenated polyisobutene: Silicone XS66-B8226, manufactured by Momentive Performance Materials Japan LLC * 25 Dextrin palmitate: Rheopearl KL-2, manufactured by Chiba Flour Mills * 26 LPG: LPG (0.27 MPa) , manufactured by Taiyo Liquefied Gas *27 LPG: liquefied petroleum gas (LPG20°C 0.20), manufactured by Koike Chemical *28 DME: dimethyl ether, manufactured by Mitsui Chemicals

Claims

A cosmetic containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire cosmetic,
When the cosmetic contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire cosmetic,
A cosmetic containing the following component (D), wherein the content of the component (D) is 25% by mass or less based on the total amount of the cosmetic.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water
The cosmetic according to claim 1, wherein the component (B) is one or more selected from the group consisting of silicones, lower alcohols having 3 or less carbon atoms, and hydrocarbon oils.
The cosmetic according to claim 1 or 2, wherein the mass ratio ((C)/(A)) of said component (C) to said component (A) is 0.5 or less.
The cosmetic according to any one of claims 1 to 3, wherein the mass ratio ((A)/(B)) of said component (A) to said component (B) is 0.003 or more and 0.20 or less. fee.
The cosmetic according to any one of claims 1 to 4, wherein the mass ratio ((D)/(A)) of said component (D) to said component (A) is 20 or less.
The cosmetic according to any one of claims 1 to 5, wherein the component (A) is dispersed in the component (B) as particles having a Z-average particle size of 30 nm or more and 500 nm or less.
A water repellent agent containing the following components (A) and (B),
The content of the component (A) is 0.3% by mass or more and 10% by mass or less with respect to the entire water repellency imparting agent,
When the water repellency imparting agent contains the following component (C), the content of the component (C) is 5.0% by mass or less with respect to the entire water repellency imparting agent,
A water repellency-imparting agent, wherein when the water repellency-imparting agent contains the following component (D), the content of the component (D) is 25% by mass or less relative to the entire water repellency-imparting agent.
(A) hydrophobized fine zinc oxide or hydrophobized fine titanium oxide (B) volatile solvent (C) hydrophilic organic compound having fluidity at 25°C (D) water
Containing the dried cosmetic according to any one of claims 1 to 6,
A water-repellent structure having an arithmetic mean roughness (Ra) defined in JIS B0601;2001 of 0.10 μm or more and 3.0 μm or less.
A method for producing a water-repellent structure on the surface of hair or skin, comprising applying the cosmetic according to any one of claims 1 to 6 to hair or skin.
A method for imparting water repellency to hair or skin, comprising applying the cosmetic according to any one of claims 1 to 6 to hair or skin.
A method for treating hair or skin, comprising the following steps (i) and (ii), wherein the step (ii) is performed after the step (i).
(i) applying the cosmetic composition according to any one of claims 1 to 6 to hair or skin; (ii) evaporating said component (B) from said hair or skin;
12. The treatment method according to claim 11, further comprising, after step (ii), step (iii): applying a surfactant solution and rinsing with water.