CN116744901A

CN116744901A - Liquid oily cosmetic

Info

Publication number: CN116744901A
Application number: CN202280010351.3A
Authority: CN
Inventors: 西田圭太; 杉原惠
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2021-02-17
Filing date: 2022-02-14
Publication date: 2023-09-12
Also published as: WO2022176811A1; JP2022125619A

Abstract

To provide a liquid oily cosmetic excellent in redispersibility of a hydrophobically treated silica powder. A cosmetic material comprising the following components (a) to (c): (a) 5.0 to 60 mass% of volatile silicone oil; (b) 0.1 to 10 mass% of hydrophobically treated silica powder; (c) 0.05 to 5.0% by mass of a polyglycerol-modified silicone represented by the following formula (I), wherein R is represented by the formula (I) ₁ A straight or branched alkyl group having 1 to 12 carbon atoms, or a phenyl group; r is R ₂ An alkylene group having 2 to 11 carbon atoms; p is a number from 10 to 120; q is a number from 1 to 11.

Description

Liquid oily cosmetic

Technical Field

The present application relates to a liquid oily cosmetic containing an oil-absorbing powder, and more particularly, to a liquid oily cosmetic using a hydrophobically treated silica powder as an oil-absorbing powder.

Background

Liquid oily cosmetics, such as water-in-oil compositions, in which the oil phase forms a continuous phase, are widely used as cosmetics, and are particularly suitable for use as sunscreen/foundation cosmetics/foundations because of their excellent make-up holding effect.

In general, in liquid oily cosmetics, an operation of adjusting the viscosity to be low is performed for the purpose of improving the feel in use such as good spreading and ease of application. However, in cosmetics having particularly low viscosity, powder or the like may be settled and become uneven. In such a case, studies have been made that the composition does not settle even when it is a low-viscosity powder (patent document 1), or a method has been used in which the container is oscillated immediately before the cosmetic is applied to redisperse the settled powder, and the composition is again returned to a uniform state and applied (patent document 2).

In addition, various powders are used in cosmetics according to purposes, but for the purpose of preventing makeup removal due to sebum, powders that absorb sebum, for example, spherical organic powders or the like are blended (patent documents 3 and 4).

More specifically, for example, patent document 4 discloses a water-in-oil emulsion cosmetic containing the following components (a), (B), (C) and (H): 0.1 to 10 mass% of spherical organic powder having an oil absorption of 1.0g/g or more and an water absorption of 1.0g/g or less, (B) 0.1 to 10 mass% of film forming agent, (C) 5 to 60 mass% of volatile oil and (H) 5 to 70 mass% of water.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 4566124

Patent document 2: japanese patent laid-open No. 2007-217393

Patent document 3: japanese patent laid-open publication No. 2005-97246

Patent document 4: international publication No. 2019/111831

Disclosure of Invention

Problems to be solved by the application

On the other hand, conventionally, there has been no sufficient study on a cosmetic, particularly a low-viscosity water-in-oil type cosmetic, which is obtained by mixing a hydrophobic silica as an inorganic powder as a sebum-absorbing powder.

In contrast, the present inventors focused on a liquid oily cosmetic using a hydrophobically treated silica powder.

However, as a result of intensive studies by the present inventors, it has been found that when a hydrophobically treated silica powder is used, there is a problem in that dispersibility is poor.

In particular, as described above, the hydrophobic treated silica powder dispersed in the oil phase tends to be easily settled in the liquid oily cosmetic having a low viscosity. In the case where the hydrophobically treated silica powder is precipitated, shaking is required to redisperse the hydrophobically treated silica powder. However, it is known that if the hydrophobically treated silica powder is used, the dispersibility (which is defined as "redispersibility" in the present application) upon redispersion by shaking is also poor.

The present application has been made in order to improve the above-mentioned circumstances, and an object thereof is to provide a liquid oily cosmetic excellent in redispersibility of a hydrophobically treated silica powder.

Means for solving the problems

The present application for achieving the above object is as follows.

Scheme 1

A liquid oily cosmetic comprising the following components (a) to (c):

(a) 5.0 to 60 mass percent of volatile silicone oil;

(b) 0.1 to 10 mass% of hydrophobically treated silica powder;

(c) 0.05 to 5.0 mass% of polyglycerol-modified silicone represented by the following formula (I),

in formula (I), R ₁ Straight representing 1-12 carbon atomsChain or branched alkyl, or phenyl; r is R ₂ An alkylene group having 2 to 11 carbon atoms; p is a number from 10 to 120; q is a number from 1 to 11.

Scheme 2

The cosmetic according to claim 1, wherein the hydrophobic treated silica powder has an oleic acid oil absorption of 1.0ml/g or more.

Scheme 3

The cosmetic according to either of embodiments 1 or 2, wherein the volatile silicone oil is linear polydimethylsiloxane.

Scheme 4

The cosmetic according to any one of aspects 1 to 3, further comprising (e) an ultraviolet scattering agent.

Scheme 5

The cosmetic according to any one of aspects 1 to 4, further comprising (f) a film-forming agent.

Scheme 6

The cosmetic according to any one of aspects 1 to 5, which is water-in-oil.

Scheme 7

The cosmetic according to any one of aspects 1 to 6, wherein the hydrophobically treated silica powder is a silica powder subjected to silicone treatment.

Scheme 8

The cosmetic according to any one of aspects 1 to 7, wherein the polyglycerol-modified silicone is dibutylpolydimethylsiloxane polyglycerol-3.

Scheme 9

The cosmetic according to any one of claims 1 to 8, which is a redispersed cosmetic that is redispersed by shaking at the time of use.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present application, a liquid oily cosmetic excellent in redispersibility of the hydrophobically treated silica powder can be provided.

Detailed Description

Liquid oily cosmetic

The liquid oily cosmetic of the present application (hereinafter, also simply referred to as "cosmetic of the present application") contains the following components (a) to (c):

(a) 5.0 to 60 mass percent of volatile silicone oil;

(b) 0.1 to 10 mass% of hydrophobically treated silica powder;

in formula (I), R ₁ A straight or branched alkyl group having 1 to 12 carbon atoms, or a phenyl group; r is R ₂ An alkylene group having 2 to 11 carbon atoms; p is a number from 10 to 120; q is a number from 1 to 11.

As described above, when the hydrophobically treated silica powder is used in oily cosmetics, particularly in water-in-oil cosmetics having low viscosity, there is a problem that redispersibility is poor. This is presumably because the hydrophobically treated silica powder is a material obtained by hydrophobicizing the surface of a hydrophilic silica powder, and therefore a part of the surface of the powder is in a hydrophilic state, and is thereby coagulated in the oil phase.

In order to solve the problem, the present inventors have found through the intensive studies that the specific redispersibility of the hydrophobically treated silica powder is improved by compounding the polyglycerol-modified silicone represented by the above formula (I). Although not being limited by theory, it is thought that this is because the polyglycerol-modified silicone represented by the above formula (I) used as the dispersant in the volatile silicone oil has a higher affinity with the hydrophobic-treated silica powder than the polyglycerol-modified silicone and the volatile silicone oil, and therefore, when the volatile silicone oil is redispersed by shaking, the polyglycerol-modified silicone is also maintained on the surface of the hydrophobic-treated silica powder, and can exert a function of dispersing the hydrophobic-treated silica powder in the volatile silicone oil.

On the other hand, it is considered that other general dispersants have insufficient affinity for the hydrophobically treated silica powder or insufficient ability to disperse the hydrophobically treated silica powder in silicone oil.

It is also known that the polyglycerin-modified silicone represented by the above formula (I) has been used as a silicone-based surfactant in the past for dispersing metal oxide particles such as titanium oxide, but it is not suggested that the use is made of the present application from the viewpoint of redispersion. Further, as shown in comparative example 8 described below, it is found that even when the polyglycerin-modified silicone represented by the above formula (I) is blended in the same manner as the present application, the redispersibility is not improved when the metal oxide particles such as the silicone-treated titanium oxide are redispersed.

Volatile silicone oil

The cosmetic of the present application comprises (a) a volatile silicone oil. By containing the volatile silicone oil, for example, stickiness can be suppressed, and an effect of improving uniformity even when the makeup cosmetic is applied to the skin and then superimposed on the skin can be obtained.

In the present application, "volatile" means that the volatile content is more than 5% when left at 105℃for 3 hours under atmospheric pressure. From the viewpoint of further exhibiting the effect of the present application, the volatile component, which is an index of volatility, is preferably 10% or more, 20% or more, 40% or more, 50% or more, 60% or more, 80% or more, or 100% or more. In the present disclosure, "nonvolatile" means that the volatile component is 5% or less when left for 3 hours at 105 ℃. The volatile component herein means a value of a weight change rate measured by a weight method by placing a filter paper on a glass dish and dropping about 0.2g of the sample.

In the present application, examples of the volatile silicone oil include, but are not limited to, polydimethylsiloxane and the like. The volatile silicone oil may be chain-shaped or ring-shaped. Further, the chain volatile silicone oil may be linear or branched, and is particularly preferably linear.

Further, the viscosity of the volatile silicone oil may be, for example, 0.7cs to 3.0cs.

Further, as the volatile silicone oil, a commercially available one can be used. Examples of the commercially available volatile silicone oil include, but are not limited to, silicone KF-96A-2cs (polydimethylsiloxane), silicone KF-96A-1.5cs (polydimethylsiloxane), and silicone KF56 (diphenylsiloxyphenyl trimethicone) manufactured by Xinyue chemical industries, inc.

In the cosmetic of the present application, 1 or 2 or more volatile silicone oils may be used. The content of the volatile silicone oil in the cosmetic of the present application may be 5.0% by mass or more, 6.0% by mass or more, 7.0% by mass or more, 8.0% by mass or more, 9.0% by mass or more, 10% by mass or more, 11% by mass or more, 12% by mass or more, 13% by mass or more, 14% by mass or more, 15% by mass or more, 16% by mass or more, 17% by mass or more, 18% by mass or more, 19% by mass or more, 20% by mass or more, 21% by mass or more, 22% by mass or more, 23% by mass or more, 24% by mass or more, 25% by mass or more, 26% by mass or more, 27% by mass or more, 28% by mass or more, 29% by mass or more, or 30% by mass or more, and may be 60% by mass or less, 50% by mass or less, 40% by mass or 30% by mass or less, with respect to the total amount of the cosmetic.

Hydrophobically treated silica powder

The cosmetic of the present application comprises (b) a hydrophobically treated silica powder. The cosmetic of the present application can absorb sebum by containing the hydrophobically treated silica powder, and thus can prevent makeup removal due to sebum.

In the present application, the hydrophobic-treated silica powder means a material obtained by subjecting the surface of a silica powder to hydrophobic treatment. Here, the hydrophobic treatment may be, for example, silicone-based treatment such as polydimethylsiloxane and polymethylsiloxane. From the viewpoint of further exhibiting the effects of the present application, the hydrophobically treated silica powder is preferably a silica powder subjected to silicone treatment.

In the present application, the silica powder may be porous silica particles or silica particles having irregularities on the surface, but porous silica particles are preferable from the viewpoint of improving the sebum absorption effect. The shape of the silica particles is not particularly limited, and may be, for example, spherical, substantially spherical, or a rotational ellipsoidal shape. The silica particles may be disintegrating silica particles, in particular, silica particles broken by a shearing force with a finger.

The average particle diameter of the hydrophobically treated silica powder is not particularly limited, and may be, for example, 1 to 30. Mu.m. In the present application, the average particle diameter can be calculated as the projected area equivalent circle diameter of the primary particles observed by SEM or TEM.

In the present application, the oil absorption of the hydrophobically treated silica powder is evaluated by the amount (ml) of oleic acid that can be absorbed per 1g of the hydrophobically treated silica powder (i.e., "oil absorption of oleic acid (ml/g)"). In addition, oleic acid is a representative unsaturated free fatty acid in sebum. In the present application, the oil absorption of oleic acid of the hydrophobically treated silica powder may be 1.0ml/g or more, 1.1ml/g or more, 1.2ml/g or more, 1.3ml/g or more, 1.4ml/g or more, 1.5ml/g or more, 1.6ml/g or more, 1.7ml/g or more, 1.8ml/g or more, 1.9ml/g or more, 2.0ml/g or more, 2.1ml/g or more, 2.2ml/g or more, or 2.3ml/g or more, and may be 5.0ml/g or less. The oil absorption of oleic acid of the hydrophobically treated silica powder can be described, for example, in "JIS-K JIS K5101-13-1 Japan pigment, protocol-part 13: oil absorption-1 st: the refined product was obtained by the A-method (Japanese Industrial Standard pigment test method-part 13: oil absorption-part 1: refined linseed oil method) ".

Further, as the hydrophobically treated silica powder, commercially available ones can be used. Examples of commercially available hydrophobically treated silica powder include, but are not limited to, SA-SA-705 (product name) manufactured by Sanyoku chemical Co., ltd.

In the cosmetic of the present application, 1 or 2 or more hydrophobically treated silica powders may be used. From the viewpoint of improving the sebum absorption effect, the content of the hydrophobically treated silica powder in the cosmetic material of the present application may be 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, 5.0% by mass or more, 5.5% by mass or more, 6.0% by mass or more, 6.5% by mass or more, 7.0% by mass or more, 7.5% by mass or more, or 8.0% by mass or more, and may be 10% by mass or less, 9.0% by mass or less, 8.0% by mass or less, 7.0% by mass or less, or 6.0% by mass or less, relative to the total amount of the cosmetic material.

Polyglycerol-modified organosilicon

The cosmetic of the present application comprises (c) a polyglycerol-modified silicone. As described above, the cosmetic of the present application can improve the redispersibility of the hydrophobically treated silica powder by containing the polyglycerol-modified silicone. The polyglycerol-modified silicone is represented by the following formula (I).

The polyglycerol-modified silicone represented by the above formula (I) can be obtained, for example, as follows: adding chloroplatinic acid isopropanol solution into a mixed solution of polyglycerol diallyl ether and single-end hydrogenated dimethylpolysiloxane, heating and reacting, adding hydrochloric acid aqueous solution into the mixed solution, performing thermal hydrolysis, adding sodium bicarbonate water for neutralization, refining and evaporating to obtain the final product. The polyglycerin-modified silicone according to the present application is not limited to this production method.

Examples of the polyglycerol-modified silicone according to the present application include, but are not limited to, dibutylpolydimethylsiloxane polyglycerol-3, which is defined in the name of cosmetic presentation.

The polyglycerin-modified silicone represented by the above formula (I) may be commercially available.

In the cosmetic of the present application, 1 or 2 or more polyglycerin-modified silicones represented by the above formula (I) may be used. From the viewpoint of improving the redispersibility of the hydrophobically treated silica powder, the content of the polyglycerol-modified silicone represented by the above formula (I) in the cosmetic of the present application may be 0.05% by mass or more, 0.1% by mass or more, 0.2% by mass or more, 0.3% by mass or more, 0.4% by mass or more, 0.5% by mass or more, 0.6% by mass or more, 0.7% by mass or more, 0.8% by mass or more, 0.9% by mass or more, 1.0% by mass or more, 1.2% by mass or more, 1.5% by mass or more, 1.8% by mass or more, 2.0% by mass or more, 2.2% by mass or more, 2.5% by mass or more, 2.8% by mass or more, 3.0% by mass or more, 3.2% by mass or more, or 3.5.0% by mass or less, 4.0% by mass or less, or 3.0% by mass or less, respectively, relative to the total amount of the cosmetic.

Other ingredients

The cosmetic of the present application may contain the above components (a) to (c) in a total amount of 50 mass% or more, 60 mass% or more, 70 mass% or more, 80 mass% or more, or 90 mass% or more, based on the total amount of the cosmetic. The cosmetic of the present application may further contain other components in addition to the above components (a) to (c). Hereinafter, other components will be described by way of example, but the cosmetic of the present application is not limited thereto.

Water (d)

The cosmetic of the present application may contain (d) water. As the water, water that can be used in cosmetics, for example, ion-exchanged water or the like can be used.

In the cosmetic of the present application, the content of water in the cosmetic may be 5.0% by mass or more, 10% by mass or more, 12% by mass or more, 15% by mass or more, 18% by mass or more, 20% by mass or more, 22% by mass or more, 25% by mass or more, 28% by mass or more, 30% by mass or more, 32% by mass or more, 35% by mass or more, 38% by mass or more, 40% by mass or more, 42% by mass or more, or 45% by mass or more, and may be 70% by mass or less, 60% by mass or less, or 50% by mass or less, based on the total amount of the cosmetic.

((e) ultraviolet scattering agent)

The cosmetic of the present application may further comprise an ultraviolet scattering agent. The ultraviolet scattering agent exhibits an effect of scattering or shielding ultraviolet rays.

Examples of the ultraviolet scattering agent include, but are not limited to, titanium oxide, zinc oxide, cerium oxide, and powders obtained by mixing them. Further, the titanium oxide and zinc oxide may be, for example, particulate titanium oxide and zinc oxide having a particle diameter of 10 to 50 nm. Further, titanium oxide and zinc oxide may be subjected to surface treatment. Here, examples of the surface treatment include, but are not limited to, fatty acid treatment, fatty acid ester treatment, and the like.

Further, as the ultraviolet scattering agent, a commercially available one can be used.

In the cosmetic of the present application, the content of the ultraviolet scattering agent may be, for example, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, 5.0% by mass or more, or 6.0% by mass or more, or 25% by mass or less, 20% by mass or less, 15% by mass or less, or 10% by mass or less, relative to the total amount of the cosmetic.

((f) film Forming agent)

The cosmetic of the present application may further comprise a film-forming agent. The film forming agent can exert the effect of keeping the makeup.

Examples of the film forming agent include, but are not limited to, fluorine-modified silicone resins, trimethylsiloxysilicic acid, and acrylic silicone resins. The film former may be solid at 25 ℃, and may be used by dissolving it in a solvent in the solid state.

Further, as the film forming agent, a commercially available one can be used. Examples of the commercially available film forming agent include, but are not limited to, for example, an end-of-the-year device and a back-of-the-year device, and a fluorosilicone resin X66-C8636 (trifluoroalkyl dimethyl/trimethylsiloxysilicate)/polydimethylsiloxane, manufactured by co.

In the cosmetic of the present application, the content of the film forming agent may be, for example, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, or 3.0% by mass or more, and may be 10% by mass or less, 8% by mass or less, 6% by mass or 4% by mass or less, based on the total amount of the cosmetic. In addition, in the case where the film forming agent is dissolved in the solvent, the content as a solid component thereof may be within the above-mentioned range.

(surfactant)

The polyglycerin-modified silicone represented by the above formula (I) is one of silicone-based surfactants functioning as a dispersant, but the cosmetic of the present application may further contain other surfactants, for example, surfactants functioning as emulsifiers, and may further contain nonionic surfactants such as silicone-based surfactants and polyglycerin fatty acid esters.

Examples of the silicone surfactant other than the polyglycerin-modified silicone represented by the above formula (I) include, but are not limited to, polyether-modified silicone having a polyether chain in a side chain (hereinafter also referred to simply as "polyether-modified silicone"), polyglycerin-modified silicone, and the like.

Specific examples of the surfactant include, but are not limited to, PEG-10 polydimethylsiloxane, PEG-9 polydimethylsiloxane ethylsiloxy polydimethylsiloxane, and lauryl PEG-9 polydimethylsiloxane ethylpolydimethylsiloxane, which are defined in the names of cosmetic preparations.

Examples of the commercial products of these surfactants include KF-6017, KF-6028, KF-6038, etc. manufactured by the Kagaku chemical Co., ltd.

(nonvolatile Silicone oil)

The cosmetic of the present application may further contain an oil component other than the volatile silicone oil described above, for example, a nonvolatile silicone oil. Examples of the nonvolatile silicone oil include silicone oils other than the volatile silicone oils described above, such as commercially available silicone KF-96A-6T (polydimethylsiloxane), but are not limited thereto.

Further, the content thereof in the case of containing the nonvolatile silicone oil may be, for example, 1.0 to 10% by mass with respect to the total amount of the cosmetic.

(Water-soluble component)

The cosmetic of the present application may further comprise a water-soluble component such as a lower alcohol. Examples of the lower alcohol include, but are not limited to, ethanol, propanol, butanol, pentanol, hexanol, and the like.

In addition, the content of the water-soluble component in the case of containing the water-soluble component may be, for example, 1.0 to 10% by mass relative to the total amount of the cosmetic.

(ultraviolet absorber)

The cosmetic of the present application may further comprise an ultraviolet absorber. Examples of the ultraviolet absorber include, but are not limited to, benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β -diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranilyl derivatives, imidazoline derivatives, benzylidene malonate derivatives, and 4, 4-diarylbutadiene derivatives.

Further, the content of the ultraviolet absorber in the case of containing the ultraviolet absorber may be, for example, 1.0 to 10% by mass relative to the total amount of the cosmetic.

(colorant)

The cosmetic of the present application may further comprise a colorant. Examples of the colorant include, but are not limited to, red pigments such as iron oxide red or iron titanate, yellow pigments such as iron oxide yellow or loess, black pigments such as iron oxide black, violet pigments such as manganese violet, green pigments such as chromium oxide, blue pigments such as navy blue, and mixtures thereof.

Further, the content thereof in the case of containing a colorant may be, for example, 0.001 to 10% by mass relative to the total amount of the cosmetic.

In addition to the above, the cosmetic of the present application may further contain components that can be used in usual cosmetics, such as preservatives, thickeners, pH adjusters, fragrances, moisturizers, blood circulation promoters, cold feel agents, antiperspirants, bactericides, skin activators, and the like, as long as the effects of the present application are not impaired.

Morphology (shape)

The cosmetic of the present application may be a redispersed cosmetic which is redispersed by shaking at the time of use.

Furthermore, the cosmetic of the present application may be of the water-in-oil type. Water-in-oil type cosmetics are preferable from the viewpoints of moisture retention and water resistance.

Here, the water-in-oil type cosmetic may be manufactured by a general method. More specifically, the cosmetic of the present application can be produced by the following steps. That is, the powder phase (the hydrophobically treated silica powder, and optionally added ultraviolet scattering agent, coloring agent, etc. if necessary) is added to the mixed oil phase component (volatile silicone oil, and optionally added film forming agent, etc.) at a predetermined temperature of about 25 ℃. Then, an aqueous phase component (water, and optionally a water-soluble component) is added, and stirring is performed, thereby obtaining a water-in-oil type cosmetic.

The cosmetic of the present application can be applied to cosmetics such as emulsions, foundations, liquid foundations, and sunscreens. The cosmetic of the present application can be used for single-use or for overlapping application of powder cosmetics such as liquid foundations, powder cakes and powder compacts.

Viscosity

The viscosity of the cosmetic of the present application may be, for example, 10000mpa·s or less, or 8000mpa·s or less from the viewpoint of good spreadability and improved ease of application, and may be 100mpa·s or more from the viewpoint of suppressing liquid dripping during application. In the present application, the viscosity of the cosmetic may be measured by se:Sup>A B-type viscometer (manufactured by VS-A type Pu Teco., td., 30 ℃) under se:Sup>A measurement condition of 12rpm for 1 minute with respect to rotor No. 3.

Examples

The present application will be described in further detail with reference to examples, but the present application is not limited to these examples. Hereinafter, unless otherwise indicated, the content is expressed as mass%.

The cosmetics of examples and comparative examples shown in tables 1 and 2 below were prepared by a conventional method, and the redispersibility of each of the obtained cosmetics was evaluated according to the following criteria. The results are shown in Table 1.

(evaluation of redispersibility)

The cosmetics of examples and comparative examples were evaluated for the state of each cosmetic after centrifugal separation using a centrifugal separator (himac CF 702) manufactured by hitachi. The evaluation criteria are as follows:

a: when the vibration is carried out for 10 times, no particles are settled;

b: when the vibration was performed 10 times up and down, a part of the particles settled;

c: when the shaking was performed 10 times up and down, most of the particles (half or more visually) settled.

TABLE 1

The "other common components" in table 1 are shown in table 2 below.

TABLE 2

( Table 2: details of other common Components of examples and comparative examples )

As is clear from Table 1, the cosmetic compositions of examples 1 to 3 were excellent in redispersibility.

In contrast, comparative examples 1 to 7, which do not contain "dibutyldimethicone polyglycerin-3", were all found to be poor in redispersibility. In comparative examples 2 to 7, it was found that the redispersibility could not be improved even when other active agents were blended instead of "dibutyldimethicone polyglycerin-3".

In comparative example 8, it was found that the use of "dibutylpolydimethylsiloxane polyglycerin-3" in place of the hydrophobically treated silica powder of the present application dispersed "organosilicon treated titanium oxide" resulted in poor redispersibility.

(measurement of oil absorption amount of oleic acid of hydrophobically treated silica powder)

For the hydrophobically treated silica powder (silicone treated silica) used in the examples, the test was carried out by the method of "JIS-K JIS K5101-13-1, japanese industrial and chemical industry, size pigment, part 13: oil absorption-1 st: the oil absorption of oleic acid was measured by using the refined plant A as a reference, namely the oil method (Japanese Industrial Standard pigment test method-part 13: oil absorption-part 1: refined linseed oil method).

More specifically, 100g of the hydrophobically treated silica powder was measured, and oleic acid was used instead of the purified linseed oil to measure the oil absorption of the hydrophobically treated silica powder.

As a result of the measurement, the oil absorption of oleic acid of the hydrophobically treated silica powder used in the examples was 240 to 250ml/100g.

(measurement of viscosity)

The cosmetics of examples 1 to 3 were measured by se:Sup>A B-type viscometer (manufactured by VS-A type sesame Pu Teco., 30 ℃ C.) under se:Sup>A measurement condition of 12rpm for 1 minute using se:Sup>A rotor No. 3. As a result, the viscosity of the cosmetics of examples 1 to 3 was 2000 mPas.

Prescription case

The following examples of the formulation of the cosmetic of the present application are given, but the present application is not limited to these examples.

Prescription example 1 Sun protection

Component content (mass%)

Water remainder

Ethanol 6.0%

Volatile polydimethylsiloxane 22%

Nonvolatile polydimethylsiloxane 4.0%

Diphenylsiloxyphenyl trimethicone 3.0%

(Trifluoroalkyl dimethyl/trimethylsilyl silicate)/polydimethylsiloxane 2.6%

PEG-10 Dimethicone 0.9%

1.0% of dibutyl polydimethylsiloxane polyglycerol

Ethylhexyl methoxycinnamate 5.0%

Diethylhexyloxyphenol methoxyphenyl triazine 0.5%

Fatty acid treated titanium oxide 1.0%

Fatty acid ester treated Zinc oxide 6.0%

Organosilicon treated silica 5.0%

Polyhydroxy butyric acid 0.1%

0.1% of poly (3-hydroxybutyric acid-co-3-hydroxyvaleric acid)

Phenoxyethanol 0.5%

Total 100%

Prescription example 2 Sun protection

Component content (mass%)

Water remainder

Ethanol 6.0%

Nicotinamide 5.0%

Volatile polydimethylsiloxane 22%

Nonvolatile polydimethylsiloxane 4.0%

Diphenylsiloxyphenyl trimethicone 3.0%

(Trifluoroalkyl dimethyl/trimethylsilyl silicate)/polydimethylsiloxane 2.6%

PEG-10 Dimethicone 0.9%

1.0% of dibutyl polydimethylsiloxane polyglycerol

Ethylhexyl methoxycinnamate 5.0%

Diethylhexyloxyphenol methoxyphenyl triazine 0.5%

Fatty acid treated titanium oxide 1.0%

Fatty acid ester treated Zinc oxide 6.0%

Organosilicon treated silica 5.0%

Polyhydroxy butyric acid 0.1%

0.1% of poly (3-hydroxybutyric acid-co-3-hydroxyvaleric acid)

Phenoxyethanol 0.5%

The total of the components is 100%.

Claims

1. A liquid oily cosmetic comprising the following components (a) to (c):

(a) 5.0 to 60 mass percent of volatile silicone oil;

(b) 0.1 to 10 mass% of hydrophobically treated silica powder;

2. The cosmetic according to claim 1, wherein the oil absorption of oleic acid of the hydrophobically treated silica powder is 1.0ml/g or more.

3. The cosmetic according to claim 1 or 2, wherein the volatile silicone oil is linear polydimethylsiloxane.

4. The cosmetic according to any one of claims 1 to 3, further comprising (e) an ultraviolet scattering agent.

5. The cosmetic according to any one of claims 1 to 4, further comprising (f) a film former.

6. The cosmetic according to any one of claims 1 to 5, which is water-in-oil.

7. The cosmetic according to any one of claims 1 to 6, wherein the hydrophobically treated silica powder is a silicone-treated silica powder.

8. The cosmetic according to any one of claims 1 to 7, wherein the polyglycerol-modified silicone is a dibutylpolydimethylsiloxane polyglycerol-3.

9. The cosmetic according to any one of claims 1 to 8, which is a redispersed cosmetic that is redispersed by shaking at the time of use.