JP2022055773A - Cosmetics - Google Patents

Abstract

To provide cosmetics that contain an anti-wrinkle agent and have a superior wrinkle concealing effect when applied to skin.SOLUTION: Cosmetics contain an anti-wrinkle agent, an oil solution whose content is 10 mass%-95 mass% relative to the total mass of the cosmetics, and powder X that has an absolute difference in refractive index from the oil solution of 0.1 or more and 1.0 or less, the content of the powder X being 0.5 mass%-10 mass% relative to the total mass of the cosmetics.SELECTED DRAWING: None

Description

This disclosure relates to cosmetics.

There is a high demand for cosmetics that can deal with defects that occur on the skin such as wrinkles, and various cosmetics that claim to contain active ingredients and conceal by visual effects have been put on the market.

As active ingredients that can improve wrinkles, ingredients such as nicotinic acid amide, retinol, and methylpropylaminocarbonylbenzoylaminoacetate Na (trivial name: Neilwan) have been approved by the Ministry of Health, Labor and Welfare of Japan and are cosmeceuticals (quasi-drugs). It is blended in (quasi-drugs).

On the other hand, in cosmetics, powders are blended for the purpose of obtaining various effects.
Patent Document 1 discloses a make-up composition containing a hydrophobized powder.
Patent Document 2 discloses a cosmetic containing barium sulfate and a composite powder having a coating layer made of silica and / or silica hydrate formed on the surface of zinc oxide particles or titanium oxide particles. Ru.
Patent Document 3 discloses a cosmetic containing a base material and a coating powder containing fine particles of red iron oxide that coats the base material.
Patent Document 4 discloses a cosmetic containing 4-tert-butyl-4'-methoxybenzoylmethane and a composite pigment in which the surface of fine particle titanium oxide is coated with silica.
Patent Document 5 discloses cosmetic particles in which amorphous titanium oxide is supported on the surface of metal oxide particles, and a cosmetic composition using these particles.

Japanese Unexamined Patent Publication No. 2008-291827 Japanese Unexamined Patent Publication No. 2013-142103 Japanese Unexamined Patent Publication No. 2020-70235 Japanese Unexamined Patent Publication No. 11-27322 Japanese Unexamined Patent Publication No. 2017-33221

Cosmetics containing an active ingredient (that is, an anti-wrinkle agent) having a wrinkle-improving effect such as nicotinamide have a certain continuous period of use until it can be determined whether or not the wrinkle-improving effect has been obtained. is necessary.

Here, in the present disclosure, the "anti-wrinkle agent" means an active ingredient approved by the Ministry of Health, Labor and Welfare of Japan to exert an effect of improving wrinkles by continuously applying it to the skin.

On the other hand, in cosmetics that claim to have an anti-wrinkle effect, obtaining a feeling of improvement in wrinkles immediately after the start of use is an important factor as a motivation for users to continue using the cosmetics for a long period of time. Therefore, in addition to the fundamental improvement effect of wrinkles by the anti-wrinkle agent, a cosmetic that allows the user to experience the improvement of wrinkles immediately after the start of use of the cosmetic is desired.

As a measure to obtain a feeling of improvement of wrinkles immediately after the start of use while containing an anti-wrinkle agent, the wrinkles were reduced by adding powder to the cosmetics and applying (for example, applying) to the wrinkles. The present inventors have found a method of applying a visual effect (hereinafter, also referred to as “wrinkle hiding effect”) that makes the appearance look like this. According to this method, the wrinkle concealing effect can be obtained by the soft focus effect caused by the inclusion of the powder.

On the other hand, when the powder is contained in the cosmetic, it is necessary not to impair the usability and properties of the cosmetic. For that purpose, it is preferable to reduce the content of the powder and / or use a powder having a small effect on the cosmetic base material (for example, an oil agent). As the powder having a small influence on the cosmetic base material, for example, the use of a powder having a small difference in refractive index from the cosmetic base material can be considered. However, the use of powder having a small difference in refractive index from the cosmetic base material requires that the cosmetic contains a large amount of powder, and there is a concern that the feeling of use and properties of the cosmetic may be affected. Therefore, when selecting a powder, it is necessary to select a powder that can obtain an effective wrinkle concealing effect even with a small content.

This disclosure has been made in view of the above circumstances.
An object to be solved by one embodiment of the present disclosure is to provide a cosmetic containing an anti-wrinkle agent and having an excellent wrinkle-hiding effect.

The disclosure includes the following aspects:
[1] When the absolute value of the difference in refractive index with respect to the refractive index of the anti-wrinkle agent, the oil agent having a content of 10% by mass to 95% by mass with respect to the total mass of the cosmetic, and the refractive index of the oil agent is 0.1 or more and 1.0 or less. A cosmetic containing powder X having a content of 0.5% by mass to 10% by mass with respect to the total mass of the cosmetic.
[2] The cosmetic according to [1], wherein the anti-wrinkle agent is nicotinamide.
[3] The cosmetic according to [1] or [2], wherein the powder X is a composite powder containing silica and titanium oxide.
[4] Further, [1] to [3] contain powder Y having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of less than 0.1 and an oil absorption amount of 1 mL / 100 g to 150 mL / 100 g. ] The cosmetics listed in any one of.
[5] The cosmetic according to [4], wherein the content of the powder Y is 20% by mass to 50% by mass with respect to the total mass of the cosmetic.
[6] The cosmetic according to any one of [1] to [5], wherein the content of the anti-wrinkle agent is 0.1% by mass to 10% by mass with respect to the total mass of the cosmetic.
[7] The oil agent is at least one selected from the group consisting of silicone oils, silicone waxes, silicone gels, hydrocarbon oils, ester oils, higher fatty acids, waxes, higher alcohols, and natural animal and vegetable oils, [1]. ] To the cosmetic according to any one of [6].

According to one embodiment of the present disclosure, a cosmetic containing an anti-wrinkle agent and having an excellent wrinkle concealing effect is provided.

FIG. 1 is a graph showing the relationship between the powder X and the wrinkle concealing effect. 2 (A) is Example 3 (wrinkle score: 21), FIG. 2 (B) is Example 5 (wrinkle score: 49), and FIG. 2 (C) is Comparative Example 1 (wrinkle score: 71). , FIG. 2 (D) is a photograph taken in each state of wrinkle score: 100. FIG. 3 is a photograph for explaining the twisted area. FIG. 4 is a graph showing the results of the reference example.

Hereinafter, an example of the embodiment of the cosmetics disclosed in the present disclosure will be described. However, the cosmetics of the present disclosure are not limited to the following embodiments, and can be appropriately modified and implemented within the scope of the purpose of the present disclosure.

The numerical range indicated by using "-" in the present disclosure means a range including the numerical values before and after "-" as the minimum value and the maximum value, respectively.
In the present disclosure, in the numerical range described in stages, the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value in another numerical range described in stages. Further, in the numerical range described in the present disclosure, the upper limit value or the lower limit value of a certain numerical range may be replaced with the values shown in the examples.
In the present disclosure, a combination of two or more preferred embodiments is a more preferred embodiment.
In the present disclosure, the amount of each component in the cosmetic is the total amount of the plurality of substances present in the cosmetic unless otherwise specified, when a plurality of substances corresponding to each component are present in the cosmetic. means.
In the present disclosure, "X" and "Y" in powder X and powder Y are symbols used only for distinguishing powders.

[Cosmetics]
The cosmetics of the present disclosure include an anti-wrinkle agent, an oil agent having a content of 10% by mass to 95% by mass with respect to the total mass of the cosmetic agent, and an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of 0.1 or more 1. It contains powder X, which is 0.0 or less and has a content of 0.5% by mass to 10% by mass with respect to the total mass of the cosmetic.

Since the cosmetic of the present disclosure contains an anti-wrinkle agent, it can be expected to have an effect of fundamentally improving wrinkles and is excellent in a wrinkle concealing effect. The reason why the cosmetics of the present disclosure can exert such an effect is not clear, but the present inventors speculate as follows.

Since the cosmetics of the present disclosure contain an anti-wrinkle agent, a fundamental improvement effect of wrinkles due to the action of the anti-wrinkle agent can be expected by continuous use for a long period of time. Further, the cosmetics of the present disclosure contain an oil agent in a content of 10% by mass to 95% by mass, and the absolute value of the difference in refractive index with respect to the refractive index of the oil agent is 0.1 or more and 1.0 or less. It is presumed that by containing the body X in a content of 0.5% by mass to 10% by mass, an appropriate light scattering effect (that is, a soft focus effect) is exhibited, and the wrinkle concealing effect is excellent.

The wrinkle-hiding effect exhibited by the cosmetics of the present disclosure is an effect that can be experienced immediately after the start of use of the cosmetics. Therefore, by using the cosmetics disclosed in the present disclosure, the feeling of improvement of wrinkles is immediately realized immediately after the start of use of the cosmetics, in combination with the expectation of the fundamental improvement effect of wrinkles due to the inclusion of the anti-wrinkle agent. It is presumed that you can experience it. It should be noted that the above guess does not limitly interpret the cosmetics of the present disclosure, but is described as an example.

On the other hand, the conventional cosmetics including the techniques described in Patent Documents 1 to 5 do not pay attention to the compatibility between the inclusion of the anti-wrinkle agent and the wrinkle hiding effect.

Hereinafter, each component contained in the cosmetics of the present disclosure will be described in detail.

[(A) Anti-wrinkle agent]
The cosmetics of the present disclosure include anti-wrinkle agents.
The cosmetics of the present disclosure may contain one type of anti-wrinkle agent alone, or may contain two or more types of anti-wrinkle agents.

The anti-wrinkle agent is not particularly limited and may be appropriately selected from anti-wrinkle agents that can be contained in cosmetics. Examples of the anti-wrinkle agent include nicotinic acid amide, retinol, and Na trifluoride isopropyloxopropylaminocarbonylpyrrolidinecarbonylmethylpropylaminocarbonylbenzoylaminoacetate Na.

As the anti-wrinkle agent contained in the cosmetics of the present disclosure, nicotinamide is preferable from the viewpoint of wrinkle improving effect and high stability when contained in the cosmetics.

Nicotinamide is an amide compound of nicotinic acid and is a substance known as one of the B vitamins which are water-soluble vitamins. The nicotinamide may be an extract extracted from a natural product such as rice bran, or a synthetic product synthesized by a known production method. As the nicotinamide, a commercially available product on the market may be obtained and used. Specifically, nicotinamide listed in the 17th revised Japanese Pharmacopoeia can be used.

The content of the anti-wrinkle agent in the cosmetics of the present disclosure is not particularly limited.
The content of the anti-wrinkle agent is, for example, preferably 0.1% by mass to 10% by mass, more preferably 1% by mass to 10% by mass, and 2% by mass to 8% by mass with respect to the total mass of the cosmetic. More preferably, 4% by mass to 6% by mass is most preferable.

When the content of the anti-wrinkle agent is 0.1% by mass or more with respect to the total mass of the cosmetic, the effect of improving the wrinkles by the anti-wrinkle agent can be expected more. When the content of the anti-wrinkle agent is 10% by mass or less with respect to the total mass of the cosmetic, the anti-wrinkle agent tends to be stably contained in the cosmetic.

[(B) Oil agent]
The cosmetics of the present disclosure include oils.
As the oil agent, an ingredient generally used as an oil agent in the field of cosmetics can be used.
The oil agent may be a liquid, a semi-solid, a solid, or a mixture thereof.

The cosmetics of the present disclosure may contain one type of oil alone or may contain two or more types of oil.

The oil agent is not particularly limited as long as it is an oil agent applicable to cosmetics.

As the oil agent, at least one selected from the group consisting of silicone oil, silicone wax, silicone gel, hydrocarbon oil, ester oil, higher fatty acid, wax, higher alcohol, and natural animal and vegetable oils from the viewpoint of wrinkle concealing effect. It is preferable that at least one selected from the group consisting of silicone oil, silicone wax, silicone gel, hydrocarbon oil, ester oil, and wax.

The oil agent can also be selected from the viewpoint of imparting viscosity, hardness and the like to the cosmetic.

As the oil agent, a commercially available product may be used.

Examples of the silicone oil include chain polysiloxanes such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, and methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and tetramethyltetra. Cyclic polysiloxanes such as hydrogencyclotetrasiloxane, caprylylmethicone, and the like can be mentioned.

Examples of the silicone wax include (Acrylate / stearyl acrylate / dimethicone methacrylate) copolymer, (Acrylate / behenyl acrylate / dimethicone methacrylate) copolymer and the like.

The silicone gel refers to a crosslinked product in which the silicone chains forming the main chain skeleton are crosslinked with a polyether chain, a polyglycerin chain, a silicone chain, or the like. Depending on the structure of the chain used for cross-linking, there are types such as a polyether-modified silicone gel, a polyglycerin-modified silicone gel, a polyether-alkyl co-modified silicone gel, and a polyglycerin-alkyl co-modified silicone gel. In the cosmetics of the present disclosure, these silicone gels can be used as an oil without limitation.

Specific examples of the silicone gel include (dimethicone / (PEG-10 / 15) crosspolymer, (PEG-15 / lauryldimethicone) crosspolymer, (PEG-10 / lauryldimethicone) crosspolymer, (PEG-15 / lauryl). Polydimethylsiloxyethyl dimethicone) crosspolymer, (dimethicone / polyglycerin-3) crosspolymer, (lauryldimethicone / polyglycerin-3) crosspolymer, (polyglyceryl-3 / laurylpolydimethylsiloxyethyldimethicone) crosspolymer, (dimethicone / Examples thereof include (vinyl dimethicone) crosspolymer, (dimethicone / phenylvinyldimethicone) crosspolymer, (vinyldimethicone / lauryldimethicone) crosspolymer, (laurylpolydimethylsiloxyethyldimethicone / bisvinyldimethicone) crosspolymer, and the like.

Examples of the hydrocarbon oil include liquid paraffin, isoparaffin, petrolatum, paraffin wax, selecin wax, microcrystalline wax, Fishertropsh wax, polyethylene wax, ethylene / propylene copolymer, hydrogenated polyisobutene, squalane and the like.

As ester oils, pentaerythrityl tetraethylhexanoate, cetyl ethylhexanate, jojoba oil, di (phytosteryl / octyldodecyl) lauroyl glutamate, triisostea, glyceryl stearate, glyceryl diisostearate, triethylhexanoin, dimer dilinoleic acid ( Phytosteryl / behenyl), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), isopropyl palmitate, macadamia nut fatty acid phytosteryl, tetra (bechenic acid / benzoic acid / ethylhexanoic acid) pentaerythrityl, ethylhexyl palmitate, Examples thereof include myristyl myristate, tripropylene glycol dipivalate, isotridecyl isononanoate, pentaerythrit ester of loginate, glyceryl (bechenic acid / eicosandioic acid), polyglyceryl-10 (bechenic acid / eicosandioic acid), polysorbate 60, and the like. ..

Examples of higher fatty acids include stearic acid, lauric acid, myristic acid, behenic acid and the like.

Examples of wax include beeswax, mokuro, gay wax, carnauba wax, candelilla wax, montan wax, and the like.

Examples of the higher alcohol include cetyl alcohol, stearyl alcohol, lauryl alcohol, behenyl alcohol and the like.

Natural animal and vegetable oils include jojoba seed oil, avocado oil, almond oil, olive oil, cacao oil, sesame oil, wheat germ oil, safflower oil, shea butter, turtle oil, camellia oil, persic oil, castor oil, grape oil, macadamia nut oil. , Palm oil, rose hip oil, soybean oil, egg yolk oil, hardened castor oil, hardened palm oil, hardened cocoa oil, hardened turtle oil, hardened mink oil, cow oil, mink oil, lanolin (so-called wool fat), etc. Can be mentioned.

The content of the oil agent in the cosmetics of the present disclosure is 10% by mass to 95% by mass with respect to the total mass of the cosmetics. The content of the oil agent can be appropriately determined according to the form of the target cosmetic. The content of the oil agent is 10% by mass to 95% by mass, which means that the oil agent is contained as one of the components contained in the cosmetics of the present disclosure.

For example, when the cosmetics of the present disclosure are oil-based cosmetics, the content of the oil is preferably 20% by mass to 95% by mass, preferably 20% by mass to 90% by mass, based on the total mass of the cosmetics. Is more preferable, and 30% by mass to 85% by mass is further preferable.

[(C) Powder X]
The cosmetics of the present disclosure contain powder X having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of 0.1 or more and 1.0 or less.

In the powder X, the absolute value of the difference in the refractive index with respect to the refractive index of the oil agent is 0.1 or more and 1.0 or less, more preferably 0.3 or more and 1.0 or less, and 0.9 or more and 1.0 or less. More preferred.

When the absolute value of the refractive index difference is 0.1 or more, it is not necessary to contain a large amount of powder in order to obtain the wrinkle concealing effect, and the degree of freedom in designing the cosmetic composition tends to increase. On the other hand, when the absolute value of the refractive index difference is 1.0 or less, appropriate light is scattered when applied to the skin (for example, application), and the appearance of the skin is suppressed from becoming white, resulting in good wrinkles. It tends to have a hidden effect.

In the present disclosure, the refractive indexes of the powder X and the oil agent are values measured according to the B method (Becke method) described in JIS K 7142: 2014.

The absolute value of the refractive index difference with respect to the refractive index of the oil agent of the powder X is the absolute value of the value obtained by measuring the refractive index of the powder X and the oil agent, respectively, and subtracting the refractive index of the powder X from the refractive index of the oil agent. Calculated as.

When a plurality of types of powder X are contained in the cosmetic, the content mass ratio and the refractive index of the plurality of types of powder constituting the powder X are measured, and the obtained refractive index is used as the content mass ratio. The value calculated by weighted averaging based on this is taken as the refractive index of the powder X.

Even when a plurality of oil agents are contained in the cosmetic, the refractive index is calculated in the same manner as in the powder X.

The powder X may be an inorganic powder, a metal oxide powder, a metal oxide-inorganic composite powder, or a metal oxide-inorganic composite powder. The body is preferred.

The form of the powder X is not particularly limited.
From the viewpoint of efficiently reflecting light and exerting the wrinkle concealing effect better, the powder X is preferably a spherical powder or a plate-shaped powder, and more preferably a spherical powder.
The spherical powder includes not only a true spherical powder but also a substantially spherical powder.
The spherical powder may have irregularities on its surface.
When the morphology of the powder X is spherical, wrinkles, which are recesses on the skin surface, can be satisfactorily filled. When the specific powder is well embedded in wrinkles, it is considered that the wrinkle concealing effect due to light scattering is better achieved.

Examples of the powder included in the powder X include, for example.
Inorganic powders (eg, talc, kaolin, mica, silk mica (serisite), white mica, gold mica, synthetic mica, red mica, black mica, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, Calcium silicate, magnesium silicate, strontium silicate, aluminum hydroxide, metal salt tungstate, magnesium, hollow silica, zeolite, barium sulfate, calcined calcium sulfate (baked sekko), calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder, etc. ), Metal soap (eg, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc.);
Metal oxide powder (eg, titanium dioxide, zinc oxide, etc.); Crosslinked hydrocarbon-based polymer (crosslinked product such as nylon, polyethylene, polyurethane, polystyrene, etc.);
Metal oxide and inorganic composite powder (silica and zinc oxide, silica and titanium dioxide, silica and iron oxide, silica and aluminum hydroxide, PMMA and zinc oxide, PMMA and titanium oxide, PMMA and iron oxide, PMMA and hydroxylation Aluminum, mica and zinc oxide, mica and titanium oxide, mica and iron oxide, mica and aluminum hydroxide, talc and zinc oxide, talc and titanium oxide, talc and iron oxide, talc and aluminum hydroxide) and the like.

The powder included in the powder X may be a powder composed of a single component or a powder composed of two or more kinds of components. Examples of the composite powder of the metal oxide and the inorganic include a composite powder obtained by coating a powder with a metal oxide or the like, and a modified powder having a powder surface treated with a compound or the like.

The cosmetics of the present disclosure may contain powder X alone or in combination of two or more.

The powder X is preferably a composite particle containing silica or mica and a metal oxide such as titanium oxide or zinc oxide, and more preferably a composite powder containing silica and titanium oxide.

As the powder X, a commercially available product can be used.
Examples of commercially available products include BA-1 and BA-4 (JGC Catalysts and Chemicals Co., Ltd., hollow silica particles), HCS Refle 30, HCS Refill 50, and HCS Refle 90 (JGC Catalysts and Chemicals Co., Ltd., silica and titanium oxide). Composite particles), MZS-5104 (Suzuki Yushi Kogyo Co., Ltd., composite particles of mica and zinc oxide), Plucea OPZ-50 (Suzuki Yushi Kogyo Co., Ltd., composite particles of PMMA and zinc oxide), Prussia SIZ-30 (Suzuki Yushi) Industrial Co., Ltd., composite particles of silica and zinc oxide), COVERLEAF MF (B) (composite particles of JGC Catalysts and Chemicals Co., Ltd., mica, titanium oxide, iron oxide) and the like.
Commercially available products that can be used as powder X are not limited to these.

The particle size of the powder X is not particularly limited.
The particle size of the powder X is, for example, preferably 1 μm to 20 μm, more preferably 3 μm to 15 μm, still more preferably 3 μm to 10 μm.
When the particle size of the powder X is in the above range, the squeaky feeling when spreading the cosmetic on the skin is suppressed, and the slipperiness tends to be improved.

In the present disclosure, the particle size of the powder refers to the volume average particle size (Mv) and is a value measured by using a laser diffraction / scattering type particle size distribution measuring device.

As the laser diffraction / scattering type particle size distribution measuring device, for example, Partica LA-960 (product name) manufactured by HORIBA, Ltd. can be preferably used. However, the laser diffraction / scattering type particle size distribution measuring device is not limited to this.

The content of the powder X is 0.5% by mass to 10% by mass, more preferably 0.5% by mass to 5% by mass, based on the total mass of the cosmetic, from the viewpoint of the usability of the cosmetic. 1% by mass to 5% by mass is more preferable.
When the content of the powder X is 0.5% by mass or more, an appropriate light scattering effect can be exhibited and a wrinkle concealing effect can be contributed. When the content of the powder X is 10% by mass or less, the influence on the usability of the cosmetic tends to be suppressed.

[(D) Powder Y]
The cosmetics of the present disclosure preferably contain powder Y having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of less than 1.0 and an oil absorption amount of 1 mL / 100 g to 150 mL / 100 g. By containing the powder Y in the cosmetics of the present disclosure, it becomes easy to achieve both the wrinkle concealing effect and the suppression of makeup twist.

Here, in the present disclosure, "makeup twist" means that the applied base makeup cosmetics such as foundation do not stay at the desired application position on the skin, and unevenness, cassoulet, etc. occur.

Cosmetics containing anti-wrinkle agents are usually configured as skin care cosmetics. In this case, in order to perform make-up, a base make-up cosmetic such as a foundation is applied to the skin after applying the skin care cosmetic. However, if the base make-up cosmetic is applied to the skin after applying the skin care cosmetic containing an oil agent or the like, it is expected that the make-up twist may occur depending on the situation. Therefore, it is important for cosmetics containing anti-wrinkle agents and oil agents to achieve both a wrinkle-hiding effect and suppression of makeup twist. The cosmetics of the present disclosure have an oil absorption amount of 1 mL / 100 g to 150 mL /. By containing 100 g of powder Y, it also has a secondary unexpected effect of being able to deal with both the wrinkle concealing effect and the suppression of makeup twist.

The oil absorption amount of the powder Y is 1 mL / 100 g to 150 mL / 100 g, more preferably 1 mL / 100 g to 130 mL / 100 g, and 30 mL / 100 g to 130 mL / 100 g is more preferable.

Further, when the oil absorption amount of the powder Y is within the above range, friction in the cosmetic is reduced and the slipperiness when spreading the cosmetic is improved. Therefore, make-up after application of the cosmetic of the present disclosure is applied. When the above is applied, the suppression of coating unevenness is further improved.

The oil absorption is measured according to JIS K 5101-13-1: 2004.

The powder Y is a powder in which the absolute value of the difference in refractive index with respect to the refractive index of the oil agent exceeds 1.0. The refractive index of the powder Y can be measured in the same manner as the refractive index of the powder X.

The powder Y may be selected from powders having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of less than 1.0 and an oil absorption amount of 1 mL / 100 g to 150 mL / 100 g.

The powder Y may be inorganic particles or organic particles.

As the powder Y, silica and polymethylmethacrylate resin (PMMA resin) are preferable, and silica is more preferable.

As the powder Y, a commercially available product can be used.
Examples of commercially available specific powders include E-2C, D-11C, D-25C, E-90C, G-6C (Suzuki Yushi Kogyo Co., Ltd., silica) and the like.

The particle size of the powder Y is not particularly limited.
The particle size of the powder Y is, for example, preferably 1 μm to 20 μm, more preferably 3 μm to 15 μm, still more preferably 3 μm to 10 μm.
When the particle size of the powder Y is in the above range, the squeaky feeling when spreading the cosmetic on the skin is suppressed, and the slipperiness tends to be improved.
The particle size of the powder Y can be measured by the method described above.

The cosmetics of the present disclosure may contain powder Y alone or in combination of two or more.

The content of the powder Y is preferably 20% by mass to 50% by mass, more preferably 30% by mass to 50% by mass, based on the total mass of the cosmetic.

When the content of the powder Y is in the above range, the precipitation of the powder is suppressed, good dispersibility can be obtained, and the feeling of use of the cosmetic tends to be kept good.

[Other ingredients]
The cosmetics of the present disclosure may contain other ingredients, if necessary, as long as the effects of the present disclosure are not impaired.
Other components include UV absorbers, aqueous media (water, lower alcohols, polyhydric alcohols, etc., and solvents capable of dissolving nicotinic acid amide), preservatives (phenoxyethanol, methylparaben, etc.), carotenoids (astaxanthin, etc.), Examples thereof include thickeners, emulsifiers, pH adjusters, emollients, moisturizers, antioxidants (tocopherols and the like), whitening agents, coloring agents, fragrances and the like.

When the cosmetic of the present disclosure contains an aqueous medium, the content of the aqueous medium is preferably 1% by mass to 50% by mass, more preferably 1% by mass to 20% by mass, based on the total mass of the cosmetic. preferable.

When the content of the aqueous medium is in the above range, the water-soluble active ingredient (for example, nicotinamide) can be efficiently permeated into the skin.

[Use of cosmetics]
The cosmetics disclosed in the present disclosure can be suitably used as cosmetics, quasi-drugs (so-called medicated cosmetics) and the like.

[How to use cosmetics]
The mode of use of the cosmetics of the present disclosure is not particularly limited.
As a mode of use of the cosmetics of the present disclosure, for example, a mode of use before base make-up is preferable in that the wrinkle concealing effect can be more effectively exhibited.

[Dosage form of cosmetics]
The dosage form of the cosmetics of the present disclosure is not particularly limited.
The cosmetics of the present disclosure may be oil-based cosmetics or emulsified cosmetics.

[Form of cosmetics]
The form of the cosmetics disclosed in the present disclosure is not particularly limited.
Examples of the form of the cosmetics disclosed in the present disclosure include paste-like, cream-like, stick-like and the like.

[Manufacturing method of cosmetics]
The method for producing the cosmetics of the present disclosure is not particularly limited, and a known production method can be applied.

The oily cosmetics of the present disclosure can be produced, for example, by the following methods.
An oil phase composition containing an oil agent and other oil phase components is prepared, and the obtained oil phase composition and powder X are mixed. Separately, an aqueous phase composition containing an anti-wrinkle agent (nicotinamide, etc.) and other aqueous phase components is prepared. An oil phase composition mixed with a specific amount of powder X and an aqueous phase composition are mixed to produce an emulsified cosmetic.
The emulsification method for mixing the oil phase composition and the aqueous phase composition is not particularly limited and can be carried out according to a conventional method.

Further, the cosmetics of the present disclosure include mixing an anti-wrinkle agent (nicotinamide, etc.), an oil agent, a specific amount of powder X, and, if necessary, other components described above. It can be manufactured by the method.
Each component contained in the cosmetic may be simply mixed, all the components may be mixed at once, or each component may be mixed in several portions.
The mixing means is not particularly limited, and known mixing means can be applied.
Examples of the mixing means include known mixing means such as a mortar and pestle, a stirrer, and a kneader.
The temperature and time for mixing each component are not particularly limited as long as each component can be sufficiently mixed, and can be appropriately set, for example, according to the mixing means, the type of each component, and the like.

Hereinafter, the cosmetics of the present disclosure will be described in more detail with reference to Examples. However, the cosmetics of the present disclosure are not limited to the following examples as long as the purpose is not exceeded.

[Examples 1 to 5, Comparative Example 1]
According to the formulation shown in Table 1 below, each component shown in the column of oil phase component was dissolved for 1 hour while heating at 80 ° C. to obtain an oil phase composition.
According to the formulation shown in Table 1 below, each component shown in the column of aqueous phase component was dissolved for 1 hour while heating at 80 ° C. to obtain an aqueous phase composition.
In the oil phase composition obtained above, powder X and Astats solution were mixed and stirred using a homogenizer while keeping the temperature at 80 ° C. (1400 rpm: revolutions per minutes, the same applies hereinafter).
Then, the aqueous phase composition was added and stirred with a homogenizer (5000 rpm) to obtain an emulsion.
A pH adjuster (AMP aqueous solution) was added to the obtained emulsion to adjust the pH. The pH-adjusted emulsion was cooled to about 40 ° C., kept at 40 ° C., and further stirred with a homogenizer (5000 rpm) to prepare a final emulsion (cosmetics).

[evaluation]
(Evaluation A: Wrinkle hiding effect)
80 mg of the obtained cosmetic was applied to a bioskin outer corner wrinkle model (wrinkle level 4, Bulux), spread, and the "wrinkle score" was measured using a facial image diagnostic device (Visia, Canfield Scientific). , The wrinkle hiding effect was evaluated according to the following criteria. The results are shown in Table 1. In the following evaluation criteria, the one with the best wrinkle hiding effect is "A".

-Evaluation criteria-
A: The wrinkle score is 0 or more and less than 40.
B: The wrinkle score is 40 or more and less than 60.
C: The wrinkle score is 60 or more and 100 or less.

In FIG. 2, (A) Example 3 (wrinkle score: 21, evaluation rank A), (B) Example 5 (wrinkle score: 49, evaluation rank B), (C) Comparative Example 1 (wrinkle score: 71,). The photographs taken for each of the evaluation ranks C) and (D) wrinkle score: 100 are shown.

The unit of composition of each component shown in Table 1 is mass%.
In Table 1, "-" described in the column of composition means that the corresponding component is not included.
In Table 1, for convenience, the components corresponding to the anti-wrinkle agent, the oil agent, and the powder X are classified into (A), (B), and (C), respectively.
The details of each component shown in Table 1 are as follows.

<(A): Anti-wrinkle agent>
・ Nicotinamide

<(B): Oil agent>
・ Hydrogenated polyisobutene ・ Stearic acid ・ Sorbitan stearate ・ Dimethicone ・ Squalene ・ Behenil alcohol ・ Beeswax ・ Polysorbate 60
・ Glyceryl stearate ・ Dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl)
Hoboba seed oil The refractive index (weighted average value) of the above oil is 1.40.

<(C): Powder X>
HCS-Refle 90 [trade name, refractive index difference: 0.98, particle size: 5 μm, silica / titanium oxide composite particles, spherical, non-porous, JGC Catalysts and Chemicals Co., Ltd.]
HCS-Refle 30 [trade name, refractive index difference: 0.36, particle diameter: 5 μm, silica / titanium oxide composite particles, non-porous, JGC Catalysts and Chemicals Co., Ltd.]
-BA-4 [Product name, refractive index difference: 0.12, particle diameter: 5 μm, silica particles, spherical, hollow, non-porous, JGC Catalysts and Chemicals Co., Ltd.]

<Others>
・ Tocopherol ・ Astaxanthin S [trade name, astaxanthin-containing liquid, FUJIFILM Corporation]
・ Sucrose stearate ・ Glycerin ・ Pentylene glycol ・ Carbomer ・ (Acrylate / Alkyl acrylate (C10-30)) Crosspolymer ・ AMP [Aminomethyl propanol]

As shown in Table 1, all of the cosmetics of the examples had an excellent wrinkle-hiding effect.
On the other hand, the cosmetic of Comparative Example 1 containing no powder X was inferior in the wrinkle concealing effect.

[Examples 6 to 12]
Of the components shown in Table 2, the components other than the powder are mixed by heating and stirring at 80 ° C., and then the powder X (titanium oxide / silica composite particles) and the powders having different oil absorptions (powder Y and Other powders) were mixed using a dairy pot to obtain a mixed preparation (cosmetics).

On a hot plate heated to 37 ° C., 80 mg of the obtained mixed preparation was applied in a 4 cm × 5 cm square on a heated bioskin (white) (Bulux) and dried for 1 minute. After drying, apply 60 mg of powder foundation (trade name: Writing Perfection Long Perfect UV, FUJIFILM Corporation) to the coated surface of the mixed formulation using a puff while rubbing it 5 times in a fixed direction for evaluation. A sample for use was obtained.

[evaluation]
(Evaluation B1: Wrinkle hiding effect)
The wrinkle concealing effect was evaluated for the obtained evaluation sample.
Since the details of the evaluation method and the evaluation criteria are the same as those of the evaluation test, the evaluation criteria, etc. in (Evaluation A: Wrinkle concealment effect), the description thereof is omitted here.

(Evaluation B2: Makeup twist)
In the obtained evaluation sample, the area where the foundation was twisted from the coated portion (4 cm × 5 cm square) of the mixed preparation was measured by image processing by ImageJ, and the twisted area was evaluated according to the following evaluation criteria. In this evaluation, the twisted area is defined as the degree of makeup twist.

Here, the twisted area will be described with reference to the photograph shown in FIG.
In FIG. 3, the square portion shown by the solid line is the application portion (4 cm × 5 cm square) of the mixed formulation, and the direction indicated by the arrow is the application direction of the foundation. The lower end of the coated portion and the portion surrounded by the broken line are the portions where the foundation is twisted, and the area of this portion is defined as the twisted area.
The photograph shown in FIG. 3 is used only for explaining the twisted area.

-Evaluation criteria-
AA: The twisted area is less than 2 cm ² .
A: The twisted area is 2 cm ² or more and less than 4 cm ² .
B: The twisted area is 4 cm ² or more.

The unit of composition of each component shown in Table 2 is mass%.
In Table 2, "-" described in the column of composition means that the corresponding component is not included.
In Table 2, for convenience, the components corresponding to the anti-wrinkle agent, the oil agent, the powder X, and the powder Y are classified into (A), (B), (C), and (D), respectively.

The details of each component shown in Table 2 are as follows.

<(A): Anti-wrinkle agent>
・ Nicotinamide

<(B): Oil agent>
-Dimethicone- (Dimethicone / Vinyl dimethicone) Crosspolymer-Triethylhexanoin The refractive index (weighted average value) of the above oil is 1.41.

<(C): Powder X>
-Titanium oxide / silica composite particles (refractive index difference: 0.97, particle diameter: 5 μm, trade name: HCS-Refle 90, JGC Catalysts and Chemicals Co., Ltd.)

<(D): Powder Y>
-Silica particles (oil absorption: 120 mL / 100 g, refractive index difference: 0.05, particle diameter: 3.0 to 4.5 μm, trade name: D-11C, Suzuki Yushi Kogyo Co., Ltd.)
-Silica particles (oil absorption: 30 mL / 100 g, refractive index difference: 0.05, particle diameter: 3.2 to 5.0 μm, trade name: G-6C, Suzuki Yushi Kogyo Co., Ltd.)

<Others>
-Silica particles (oil absorption: 400 mL / 100 g, refractive index difference: 0.05, particle diameter: 4.0 to 6.0 μm, trade name: SF-16C, Suzuki Yushi Kogyo Co., Ltd.)
・ Polyglyceryl-2 isostearate
・ BG [butylene glycol]

As shown in Table 2, all of the cosmetics of Examples 6 to 12 had an excellent wrinkle-hiding effect. Further, it was found that the content of the powder Y improves the effect of suppressing the cosmetic twist.

[Relationship between powder X and wrinkle hiding effect]
In the composition of the cosmetic of Example 1, the cosmetic was prepared in the same manner as in Example 1 except that the type and content of powder X were changed, and the type and content of powder X and the wrinkle hiding effect were obtained. Evaluated the relationship. Details of the type and content of powder X in the cosmetics prepared for evaluation are as shown in the following groups (1), (2) and (3).

Group (1): Instead of HCS-Refle 90, BA-4 (JGC Catalysts and Chemicals Co., Ltd., silica particles) was used as the powder X, and the content of the powder X was 1% by mass, 3% by mass, and 5% by mass. % And 4 kinds of cosmetics changed to 10% by mass were prepared respectively.
(2) Group: HCS Refill 30 was used as the powder X instead of the HCS-Refle 90, and the content of the powder X was changed to 1% by mass, 3% by mass, and 5% by mass. The charges were prepared respectively.
(3) Group: Five types in which the content of HCS Refle 90 was changed to 0.5% by mass, 0.75% by mass (Example 1), 1% by mass, 1.5% by mass, and 3% by mass. Cosmetics were prepared respectively.

For each of the obtained cosmetics, the wrinkle hiding effect was evaluated in the same manner as in "Evaluation A: Wrinkle hiding effect", and a wrinkle score was obtained. FIG. 1 shows a graph in which the obtained wrinkle score is on the vertical axis and the content of powder X is on the horizontal axis.

In FIG. 1, the cosmetic group of the above (1) group has a triangle (▲), the cosmetic group of the above (2) group has a square (■), and the cosmetic group of the above (3) group has a diamond shape (◆). Plotted using.

The absolute values of the refractive index difference of the powder X used in each of the above groups (1), (2) and (3) with respect to the oil agent were 0.12, 0.36 and 0.98, respectively.
The value of the above-mentioned refractive index difference is also shown in FIG.

From FIG. 1, it can be seen that the wrinkle score is improved at a lower concentration as the powder has a refractive index difference closer to 1.0. It is considered that this is because the light scattering property is increased due to the large difference in the refractive index.

[Relationship between the difference in refractive index of powder and oil and the effect of hiding wrinkles: Reference example]
Silicone gel (trade name: KSG-16, Shin-Etsu Chemical Industry Co., Ltd.): Triethylhexanoin (trade name: Nomcoat TIO, Nisshin Oillio Co., Ltd.) = 60:14 oil and various powders shown in Table 3 below. Using a body, the oil agent and the powder are mixed using a mortar so that the content of the powder with respect to the total mass of the composition is 5% by mass, and the composition consisting of the oil agent and the powder (evaluation sample). ) Was prepared.

The refractive index (weighted average value) of the oil agent is 1.40.
Table 3 shows the absolute value (absolute value of the refractive index difference) of the value obtained by subtracting the refractive index of the powder from the refractive index of the oil agent.

For each of the obtained evaluation samples, the wrinkle hiding effect was evaluated in the same manner as in "Evaluation A: Wrinkle hiding effect", and a "wrinkle score" was obtained.
The results of the obtained "wrinkle score" are also shown in Table 3. Further, FIG. 4 shows a graph showing the obtained “wrinkle score” on the vertical axis and the type of powder on the horizontal axis.
The area of A, B or C indicated by the double-headed arrow at the right end of the graph shown in FIG. 4 corresponds to the rank of the evaluation standard of the evaluation A.

The sources of each powder listed in Table 3 are as follows.
・ HOLLOWY-N15 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ B-6C [Product name, Suzuki Oil & Fat Industry Co., Ltd.]
・ SATINIER M5 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ BA-4 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ BA-1 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ HCS-Refle 30 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ HCS-Refle 50 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ HCS-Refle 90 [Product name, JGC Catalysts and Chemicals Co., Ltd.]
・ MZS-5104 (trade name, Suzuki Oil & Fat Industry Co., Ltd.),
・ COVERLEAF MF (B) [Product name, JGC Catalysts and Chemicals Co., Ltd.]

From the results shown in Table 3 and FIG. 4, the composition using the powder in which the absolute value of the refractive index difference with respect to the refractive index of the oil agent is 0.1 or more and 1.0 or less is the refractive index with respect to the refractive index of the oil agent. It was confirmed that the wrinkle concealing effect was excellent in comparison with the composition in which the powder having an absolute difference of less than 0.1 was used at the same content.

From the above Examples and Reference Examples, the cosmetics of the present disclosure containing an anti-wrinkle agent for fundamental improvement of wrinkles and containing an oil agent and powder X in a predetermined range are based on the anti-wrinkle agent. It can be seen that it is a cosmetic that can be expected to have a fundamental improvement effect on wrinkles and that the improvement feeling of wrinkles can be experienced immediately after the start of use.

Claims (7)

With anti-wrinkle agents,
An oil agent having a content of 10% by mass to 95% by mass of the total mass of cosmetics, and
Powder X having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of 0.1 or more and 1.0 or less and a content of 0.5% by mass to 10% by mass with respect to the total mass of the cosmetic.
Cosmetics containing. The cosmetic according to claim 1, wherein the anti-wrinkle agent is nicotinamide. The cosmetic according to claim 1 or 2, wherein the powder X is a composite powder containing silica and titanium oxide. Further, claims 1 to 3, further comprising powder Y having an absolute value of the difference in refractive index with respect to the refractive index of the oil agent of less than 0.1 and an oil absorption amount of 1 mL / 100 g to 150 mL / 100 g. The cosmetics described in any one of the items. The cosmetic according to claim 4, wherein the content of the powder Y is 20% by mass to 50% by mass with respect to the total mass of the cosmetic. The cosmetic according to any one of claims 1 to 5, wherein the content of the anti-wrinkle agent is 0.1% by mass to 10% by mass with respect to the total mass of the cosmetic. The oil agent is at least one selected from the group consisting of silicone oil, silicone wax, silicone gel, hydrocarbon oil, ester oil, higher fatty acid, wax, higher alcohol, and natural animal and vegetable oil. The cosmetic according to any one of claim 6.

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