JP2008239588A - Powder for cosmetics - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder for cosmetics without loss of natural skin feeling and correcting a color failure under conditions applied with external force such as friction in production, coating or use. <P>SOLUTION: The powder for cosmetics including a photonic crystal formed of a spherical particulate (P) comprises at least any one of a photonic crystal (PC1) formed of a structure filled with a resin between gaps of the spherical particulate (P) and a photonic crystal (PC2) formed of its reversed opal structure as an essential component. It is preferable that the volume average particle size of the spherical particulate (P) ranges from 0.1 to 0.5 μm, and at least any one of the photonic crystal (PC1) and the photonic crystal (PC2) is adhered to the surface a thin flake powder (F). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cosmetic powder. In particular, the present invention relates to a cosmetic powder that corrects a color defect without impairing a natural skin feeling by using spectral characteristics.

  Conventionally, titanium oxide pigments having strong hiding power and coloring power have been used to correct chromatic defects such as dullness and blemishes on the skin, freckles, redness and dark circles around the eyes. However, correction of color defects by concealment results in a matte state with no gloss, no transparency, and a finish that is far from the actual bare skin.

In recent years, it has been found that correction of color defects based on the spectral characteristics of powder is effective as a method of correcting color defects without impairing the natural skin feeling.
Cosmetic powders that utilize the spectral characteristics of powders include composite pigments in which fine spherical resin powders of alkyl acrylate resin are combined with flaky substrate particles (Patent Document 1), and alkyl acrylate resins on flaky substrate particles. A composite pigment (Patent Document 2) in which a hollow fine spherical resin powder is compounded has been developed. However, since the fine spherical resin powder and hollow spherical resin powder of the alkyl acrylate resin used have a broad particle size distribution, the expressed interference light is weak and cannot be said to have sufficient spectral characteristics. Therefore, satisfactory color defect correction effects are not obtained.

As a technique for enhancing interference light and enhancing the effect of correcting color defects, composite pigments in which spherical fine particles having a monodispersed particle diameter are coated on the surface of a flaky powder have been developed (Patent Document 3). When monodisperse spherical fine particles are integrated three-dimensionally, strong interference light can be obtained, so that it can be expected as an effective defect correction method in principle.
However, when it is actually used as a cosmetic product such as a foundation, there is a problem that an external force such as a frictional force is applied during manufacture, application or use, and the integrated structure of monodispersed spherical fine particles is disturbed. This disturbance of the integrated structure affects the intensity and wavelength of the interference light, so that a color defect correction effect that is satisfactory in actual use cannot be obtained.
JP-A-5-112429 JP-A-11-92688 JP2003-12461

  That is, an object of the present invention is a cosmetic product that can correct a color defect without impairing the natural feeling of the skin even under conditions where an external force such as a frictional force is applied during manufacture, application, or use. It is to provide a powder for use.

  The cosmetic powder of the present invention is a photonic crystal composed of true spherical fine particles (P), a photonic crystal (PC1) composed of a resin filled in the gaps between the true spherical fine particles (P), and At least one of the photonic crystals (PC2) having the inverse opal structure is an essential constituent component.

According to the cosmetic powder of the present invention, since photonic crystal is an essential constituent, strong interference light can be obtained due to the effect of the photonic band gap described later.
In addition, since the spherical particles (P), which are constituent units of the photonic crystal, are fixed by a resin, or are made of an inverse opal structure, the photonic crystal structure is caused by dropping off the spherical particles (P). Disturbance does not occur.
Therefore, according to the cosmetic powder of the present invention, color defects can be corrected without impairing the natural skin feeling even under conditions where an external force such as a frictional force is applied during manufacture, application or use. can do.

  In the present invention, a photonic crystal composed of true spherical fine particles (P) having a structure in which a resin is filled in a space between the true spherical fine particles (P) is referred to as true spherical particles (P ) As a structural unit, and a structure in which spherical particles (P) are accumulated so as to have a certain regularity, that is, a three-dimensional periodicity, and a resin filled in the gap between the structures. It has a band gap.

The photonic band gap is a band gap with respect to an electromagnetic wave and means an insulating band of the electromagnetic wave. An electromagnetic wave having a wavelength corresponding to this gap cannot be transmitted into the crystal and is completely reflected. This reflected light is interference light represented by the following equation, and is also called a structural color.
λmax = 2d (n ² -sin ² θ) ^1/2
Here, λmax is the peak wavelength of the reflected light, d is the particle size of the spherical particles (P), n is the refractive index of the photonic crystal, and θ is the incident angle.
In order to correct a color defect, it is necessary to express visible light in the visible range, and the wavelength is determined by the particle size of the true spherical particles (P). The volume average particle diameter of the true spherical particles (P) varies somewhat depending on the refractive index of the photonic crystal, but is preferably about 0.1 μm to 0.5 μm, and particularly preferably 0.2 μm to 0 μm. .4 μm. When the particle size is within this range, visible interference light can be expressed.

The interference light by the photonic crystal has high brightness and wavelength selectivity, and if this interference light is used, it is possible to correct a color defect without impairing the natural skin feeling.
High brightness means that the interference light is strong, that is, the reflectance of the photonic crystal is high. The reflectance of the photonic crystal is the number of layers of the spherical particles (P), the refractive index of the photonic crystal, that is, the refraction of the resin filled in the gap between the spherical particles (P) and the spherical particles (P). Determined by rate.
In order to obtain a high reflectance, the number of layers of the true spherical particles (P) is preferably at least 3 layers, more preferably 5 layers, and particularly preferably 10 layers.
The refractive index of the spherical particles (P) and the resin filled in the gaps between the spherical particles (P) is preferably higher in contrast. This is because the higher the refractive index contrast, the higher the reflectance.
High wavelength selectivity means that the wavelength of reflected light is sharp. Only the light corresponding to the photonic band gap is reflected, and the other light is transmitted unless the constituent material such as the photonic crystal has a large absorption. This transparency is extremely effective in producing a sense of transparency, that is, a natural skin feeling.

  Interfering light by a photonic crystal has the unique properties as described above. Therefore, by applying this spectral characteristic to correcting various color defects of skin, a beautiful finish with transparency can be obtained. In other words, for dull skin, use red to orange interference light to make a healthy correction, and for recently increased reddish skin, use a complementary green interference light to correct for a natural finish. Can do. In addition, it is effective to use blue interference light when a clear stratum corneum transparency is desired. By setting the particle size of the true spherical fine particles (P) to 0.20 μm, 0.25 μm, 0.3 μm, and 0.35 μm, the interference light becomes approximately blue, green, yellow, and red, respectively. Usually, in order to adjust these subtle colors, it is not possible to use several kinds of organic and inorganic dyes and pigments, so the brightness is greatly reduced. According to the above, it is possible to adjust a subtle hue while maintaining high brightness.

As a constituent material of the photonic crystal, either an organic compound or an inorganic compound can be used. Here, the constituent material of the photonic crystal means a material (composition) that constitutes the constituent material of the photonic crystal composed of true spherical fine particles (P) and an inverse opal structure.
The refractive index of the constituent material is preferably 1.3 to 3.0, more preferably 1.4 to 2.5, and 1.45 to 2.0 from the viewpoint of improving the reflectance.
In addition, in order to realize the above-described transparency, a material that does not absorb in the visible light region is preferable.

As the organic compound, it is preferable to use various polymers that satisfy the above-described conditions. Synthetic polymers such as ring-opening polymerization polymers, polyaddition polymers, polycondensation polymers, vinyl polymerization polymers, polysaccharides (cellulose, amylose) Natural polymers such as amylopectin, chitosan, chitin, aramid fiber, etc.), lipids (phospholipid, glycolipid, cholesterol, etc.) and various polypeptides (collagen etc.).
Non-vinyl polymerization polymers such as ring-opening polymerization polymers, polyaddition polymers, and polycondensation polymers include urethane resins, urea resins, polyamide resins, polyimide resins, epoxy resins, silicone resins, polyester resins, polyether resins, etc. Is mentioned.
The vinyl polymerization polymer is a polymer having a monomer having a vinyl group as a structural unit,
Cyano group-containing vinyl monomer, (meth) acrylate (acrylic resin), carboxyl group-containing vinyl monomer, aromatic vinyl hydrocarbon, aliphatic vinyl hydrocarbon, alicyclic vinyl hydrocarbon, (meth) acrylamide, vinyl sulfonic acid, vinyl ketone Polyfunctional monomers, fluorine monomers and the like can be used as structural units.
When the spherical particles (P) described later are used as a constituent material for photonic crystals, polystyrene, polymethyl methacrylate, copolymers of these constituent monomers with carboxyl group-containing vinyl monomers, polyfunctional monomers, etc. are exclusively used. Is used. Commercially available monodisperse polystyrene-based fine particles can also be used.

As the inorganic compound, any of a natural product, a modified product of a natural product, and a synthetic product (including a purified product) can be used, but a synthetic product is preferable from the viewpoint of preventing a production lot from blurring. For example, a carbide having a metal compound or an organic substance as a precursor can be used.
Examples of the metal compound include group 1 to group 16 metal oxides (titanium oxide, silicon oxide (silica), zinc oxide, aluminum oxide, molybdenum oxide, tungsten oxide, vanadium oxide, indium oxide, etc.) in the periodic table of elements. ), Metal sulfides (such as copper sulfide, zinc sulfide, lead sulfide, nickel sulfide and platinum sulfide), metal halides (such as calcium fluoride, tin fluoride and potassium fluoride), metal carbides (calcium carbide, titanium carbide, Iron carbide and sodium carbide), metal nitride (aluminum nitride, chromium nitride, silicon nitride, germanium nitride, cobalt nitride, etc.), metal salt (titanate (barium titanate, magnesium titanate, potassium titanate, etc.)) , Aluminates (yttrium aluminate (YAG), etc.), solid solutions of these (zirconium titanate) Phosphate lead lanthanum, etc.), and the like.
Of these, metal oxides are preferable from the viewpoints of refractive index and manufacturability, and titanium oxide, zirconia, and silica are particularly preferable. Commercially available monodispersed silica fine particles can also be used.

  As the resin filled in the gaps between the true spherical fine particles (P), the same organic compounds as those described above can be used. PC) is not preferred. This is because the refractive index contrast is lost and interference light cannot be obtained. Since the refractive index contrast is preferably higher as described above, when the refractive index of the spherical particles (P) is high, use a low refractive index material such as (meth) acrylate (acrylic resin) or silicone resin. Is preferred.

As described above, the photonic crystal of the present invention has a structure in which spherical particles (P) are accumulated so as to have a three-dimensional periodicity, and a resin filled in the gaps between the spherical particles (P). It is.
A structure in which spherical particles (P) are accumulated so as to have a three-dimensional periodicity can be obtained by collecting spherical particles (P) one by one using a micromanipulator, gravity, centrifugal force, capillary force, etc. And a method of accumulating by liquid crosslinking force or the like.
As the former method, there is a method of collecting one by one while confirming with an electron microscope or the like. According to this method, it is possible to produce a periodic structure with extremely high uniformity, but the production speed is extremely slow, and this method is not industrially applicable.

On the other hand, the latter method is preferable to the former method because it is not necessary to perform accumulation while confirming with an electron microscope or the like, and mass production can be performed very easily if the accumulation driving force is appropriately selected. According to the latter method, the periodic structure becomes a hexagonal close-packed structure and / or a cubic close-packed structure. As will be described later, when a template having a specific shape is used, a cubic close-packed structure is selectively obtained.
These hexagonal close-packed structures and / or cubic close-packed structures are collectively referred to as opal structures.
Using this opal structure as a template, a photonic crystal having an inverse opal structure can be produced by the method described later. The inverted opal structure is a structure formed by filling a gap between the opal structures with a precursor of a constituent material and the like and then removing the opal structure, and is a structure in which the opal structure is just reversed.
Here, the cubic close-packed structure and the hexagonal close-packed structure are both close-packed structures, and the filling rate is 74% by volume.
The cubic close-packed structure is also called a face-centered cubic lattice structure, and has a structure in which particles are positioned at the vertices of the regular tetragonal unit cell and the center of each surface, and the close-packed surfaces are stacked in the order ABCCABBC.
In the hexagonal close-packed structure, the unit cell is represented by a regular hexagonal column, and there are three particles at each corner and center of the top and bottom surfaces of this regular hexagonal column and at a height of 1/2 inside the hexagonal column. The atom located in the center of the bottom is in contact with the 6 particles at the corner of the bottom and 3 particles above and below (12 particles in total), and has the structure in which the most dense surfaces are stacked in the order of ABABAB.

As a method for accumulating the true spherical fine particles (P), a method using a liquid crosslinking force, a capillary force, and a centrifugal force as a driving force is excellent from the viewpoints of productivity, uniformity, and thickening.
The method using the liquid cross-linking force can be accumulated by a simple operation such as adding a slurry of spherical particles on a flat substrate and drying it.

An accumulation method using capillary force is an accumulation method using a phenomenon (capillary phenomenon) in which a solvent in a thin tube rises in the tube.
The height at which the solvent rises depends on the surface tension of the solvent, the ease of wetting of the tube, the density of the solvent, and the like, and can be calculated by the following equation.
h = 2Tcosθ / pgr
Where T is the surface tension (N / m), θ is the contact angle, p is the density of the solvent (kg / m ³ ), and g is the acceleration of gravity (m / s2)
, R is the radius (m) of the tube.
Spherical fine particles (P) dispersed in the solvent rise together with the rise of the solvent and accumulate in order from the top of the tube. Accumulation of spherical particles (P) is finally performed by the liquid cross-linking force generated by the evaporation of the solvent, but the liquid cross-linking in which the capillaries, the so-called capillary shape control effect and the direction that works easily in the vertical direction are aligned. Therefore, it is a method capable of producing a highly uniform photonic crystal.
As a container that can be used in this method, a capillary made of glass or quartz is preferably used, and a circular or square shape can be used as the cross-sectional shape of the capillary.
As a specific method, only one end of the capillary is immersed in a slurry of spherical particles (P). Furthermore, by optimizing the accumulation conditions such as adjusting the hydrophilicity / hydrophobicity of the tube surface, a photonic crystal with higher uniformity can be produced.

The integration method using centrifugal force increases the production efficiency of photonic crystals by using centrifugal force, and furthermore, photonic crystals with small periodic structural units with high uniformity that are difficult to produce by conventional methods. It is a method that can be manufactured. For example, when a centrifugal force of 10 G is applied, the accumulation speed becomes 10 times. In addition, when a strong centrifugal force of about 5000 G is applied, small particles with a particle size of about 300 nm can be easily collected, and a fine photonic crystal suitable for fluorescence measurement in the biomedical field, etc., should be produced. Can do.
Centrifugal force is an inertial force in the direction from the center of centrifugal force to the outside, and is given by the following equation.
F = mrω ²
Here, m is the mass of the true spherical fine particles (P), r is the distance from the center of the centrifugal field to the true spherical fine particles (P), and ω is the angular velocity (number of rotations × 2π). To be precise, r is the distance from the center of the centrifuge field (centrifugal center) to the spherical particles (P). However, since the particles always move, they are treated as the distance from the center of the centrifuge to the substrate or the like for convenience. .
The strength of the centrifugal force to be used varies depending on the particle diameter and the specific gravity of the particles, but it is better from the viewpoint of improving the production speed. However, in order to produce a highly regular and uniform aggregate of spherical particles (P), not only the strength of the centrifugal force but also parameters such as processing time, particle slurry concentration, and solvent evaporation rate are optimal. It is necessary to make it.

A photonic crystal (PC2) having an inverse opal structure can be produced using the opal structure produced by the above method as a template. The photonic crystal (PC2) with an inverse opal structure is completely connected, so the periodic structure is not disturbed by external forces when using cosmetics, etc., and it affects the brightness and wavelength selectivity of interference light. Not give.
A method for producing a photonic crystal (PC2) having an inverse opal structure composed of titanium oxide using a structure in which polystyrene fine particles are accumulated as a template will be described below.
Titanium sol made from titanium oxide precursor ethanol, titanium tetraisopropoxide, and a small amount of water is filled in the gap between the structures where polystyrene particles are accumulated, and after removing the ethanol and water by drying, the polystyrene particles are removed. By doing so, an inverse opal structure made of titanium oxide can be produced. Examples of the method for removing the polystyrene fine particles include a method of pyrolyzing the polystyrene fine particles by heating to about 400 to 500 ° C. and a method of dissolving and removing them using an organic solvent such as toluene and dimethyl sulfoxide. Inverse opal structure photonic crystals that constitute titanium oxide can increase the refractive index by raising the firing temperature. If fired at 500 ° C., the refractive index becomes about 2.5, and fired at 900 ° C. Then, a refractive index of about 2.8 can be obtained. This is because the crystal structure of titanium oxide changes from amorphous to anatase and rutile.
On the other hand, a photonic crystal having an inverted opal structure using polystyrene as a constituent material can be produced using a structure in which silica fine particles are accumulated as a template. The gap between the structures using silica fine particles is filled with the styrene monomer and polymerization initiator, which are raw materials of the constituent materials, and after heating, the styrene is polymerized and polymerized, and then the silica fine particles are removed to reverse the polystyrene. An opal structure can be produced. Examples of the method for removing the silica fine particles include a method in which the silica fine particles are dissolved and removed by immersion in hydrofluoric acid.

As for the method of filling the gap in the opal structure with resin, as in the case of the photonic crystal of the inverted opal structure using polystyrene as the constituent material, a method of polymerizing after pouring the resin monomer or a resin solution (including heat melting) And a method of pouring a resin slurry to dry and form a film.
With the resin filled in the gaps of the opal structure, it is possible to immobilize the spherical fine particles (P) that are the constituent material of the opal structure. Therefore, when actually used as cosmetics such as foundations, the integrated structure of the opal structure is not disturbed even if an external force such as frictional force is applied during manufacture, application, or use, and the brightness of the interference light And wavelength selectivity is not affected.

The size of the photonic crystal is preferably 1 to 150 μm, and particularly preferably 10 to 100 μm. When the size of the photonic crystal is within this range, the color defect can be corrected effectively.
The photonic crystal size can be adjusted by crushing and, if necessary, classification treatment. Various known mixers can be used for crushing.

The flaky substrate powder used in the present invention is mica, talc, sericite, kaolin, titanium oxide, silica, alumina, iron oxide, mica titanium, boron nitride, synthetic mica, synthetic talc, hydroxyapatite, barium sulfate, low order Those having an average particle diameter of 1 to 150 μm such as titanium oxide-coated mica and iron oxide-coated mica titanium are preferable. These can use a commercial item. The average particle diameter is an average value of the maximum length of the flaky powder. The flaky powder includes plate-like powder.
By synergistically acting the optical properties of both the flaky powder and the photonic crystal, it is possible to impart a high texture to the cosmetics with complex optical properties.

As a method for attaching the photonic crystal to the surface of the flaky powder (F), a known method can be used. For example, flaky substrate powder and photonic crystal are mixed in a certain composition ratio, slurried in an aqueous alcohol solution, and then spray-dried at 700 to 1000 ° C. to attach the photonic crystal to the surface. it can.
The mixing ratio of the flaky substrate powder and the photonic crystal is preferably 60:40 to 30:70 (volume ratio).

  The cosmetic powder of the present invention can be incorporated in makeup cosmetics such as foundations in an amount of 1% (mass%) or more, but it may be dull, blemishes, freckles, redness, dark circles around the eyes, etc. In order to have an effect of correcting a color defect, 3% or more is preferable, and if it is 30% or more, interference light is excessively emitted and an unnatural finish is obtained. The blending amount is appropriately determined so that the type of cosmetic product and its purpose are finally exhibited.

  The cosmetic powder of the present invention has other components usually used in cosmetics, for example, powder components, liquid fats and oils, solid fats and oils, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, ester oils, silicone oils, anionic surface activity. Agent, cationic surfactant, amphoteric surfactant, nonionic surfactant, humectant, water-soluble polymer, thickener, film agent, ultraviolet absorber, sequestering agent, lower alcohol, polyhydric alcohol, sugar , Amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant aids, perfumes, water, etc. It can also be formed into a dosage form.

  Examples of the powder component include inorganic powders (for example, talc, kaolin, mica, sericite (sericite), muscovite, phlogopite, synthetic mica, saucite, biotite, permiculite, magnesium carbonate, calcium carbonate, silicic acid. Aluminum, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (baked gypsum), calcium phosphate, fluorine apatite, hydroxyapatite, ceramic powder , Metal soap (eg, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc .; organic powder (eg, polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene Powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigment (eg, titanium dioxide, zinc oxide, etc.); inorganic red pigment (eg, Iron oxide (Bengara), iron titanate, etc .; Inorganic brown pigments (eg, γ-iron oxide, etc.); Inorganic yellow pigments (eg, yellow iron oxide, loess, etc.); Inorganic black pigments (eg, black oxide) Iron, low-order titanium oxide, etc.); inorganic purple pigments (eg, mango violet, cobalt violet, etc.); inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (eg, Pearl pigments (eg titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored oxidation) Titanium coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (eg, aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (eg, red 201, red 202, red 204) No., red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401, and blue 404, organic pigments such as red 3 , Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3 and Blue No. 1 etc.); natural pigments (for example, chlorophyll, β-carotene, etc.) and the like.

  Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern castor oil, castor oil, linseed oil , Safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin and the like.

  Examples of the solid fat include cacao butter, palm oil, horse fat, hydrogenated palm oil, palm oil, beef tallow, sheep fat, hydrogenated beef tallow, palm kernel oil, pork fat, beef bone fat, owl kernel oil, hydrogenated oil, cattle Leg fats, moles, hydrogenated castor oil and the like.

  Examples of the wax include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nuka wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugar cane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, Examples include jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, and POE hydrogenated lanolin alcohol ether.

  Examples of the hydrocarbon oil include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, and the like.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, toluic acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid ( DHA) and the like.

  Examples of higher alcohols include linear alcohols (eg, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol); branched chain alcohols (eg, monostearyl glycerin ether (batyl alcohol) ), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyl decanol, isostearyl alcohol, octyldodecanol and the like.

  Examples of ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, lactic acid Myristyl, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, monoisostearate N-alkyl glycol, neopentyl glycol dicaprate, Diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trime triisostearate Roll propane, tetra-2-ethylhexanoic acid pentaerythritol, tri-2-ethylhexanoic acid glycerin, trioctanoic acid glycerin, triisopalmitic acid glycerin, triisostearic acid trimethylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl Palmitate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid 2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyl adipate Decyl, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

  Examples of the silicone oil include linear polysiloxanes (for example, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); cyclic polysiloxanes (for example, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexyl). And silicone resins that form a three-dimensional network structure, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.) It is done.

  Anionic surfactants include, for example, fatty acid soaps (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (eg, POE-lauryl sulfate triethanolamine, POE-sodium lauryl sulfate, etc.); N-acyl sarcosine acids (eg, sodium lauroyl sarcosine, etc.); higher fatty acid amide sulfonates (eg, sodium N-myristoyl-N-methyl taurate, palm Oil fatty acid methyl tauride sodium, lauryl methyl tauride sodium, etc .; phosphate ester salt (POE-oleyl ether sodium phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinate (eg, di-2-ethylhexyl sulfo) Sodium succinate, monolauroyl monoethanolamide sodium polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkyl benzene sulfonates (eg, sodium linear dodecyl benzene sulfonate, triethanol amine linear dodecyl benzene sulfonate, linear dodecyl) Higher fatty acid ester sulfates (eg, hydrogenated coconut oil fatty acid sodium glycerol sulfate); N-acyl glutamate (eg, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, N-myristoyl) -L-glutamic acid monosodium, etc.); sulfated oil (eg funnel oil); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether Α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfates; higher fatty acid alkylolamide sulfates; lauroyl monoethanolamide sodium succinate; N-palmitoyl aspartate ditriethanolamine ; Sodium caseinate and the like.

  Examples of the cationic surfactant include alkyltrimethylammonium salts (eg, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (eg, cetylpyridinium chloride, etc.); distearyldimethylammonium dialkyldimethylammonium chloride; Poly (N, N'-dimethyl-3,5-methylenepiperidinium chloride); alkyl quaternary ammonium salt; alkyldimethylbenzylammonium salt; alkylisoquinolinium salt; dialkyl morpholinium salt; POE-alkylamine; Examples include alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride and the like.

  Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (eg, 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide). Side-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (for example, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine) , Sulfobetaine, etc.).

  Examples of the lipophilic nonionic surfactant include sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, Sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate); glycerin polyglycerin fatty acids (eg mono cottonseed oil fatty acid glycerin, monoerucic acid glycerin, sesquioleate glycerin, monostearin) Glycerin acid, α, α'-oleic acid pyroglutamate glycerin, monostearic acid glycerin malic acid, etc.); propylene glycol fatty acid esters (eg monostearies) Propylene glycolate, etc.); hardened castor oil derivative; glycerin alkyl ether, etc.

  Examples of hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE sorbite fatty acid esters (eg, POE-sorbite monolaurate, POE-sorbite monooleate, POE-sorbite pentaoleate, POE-sorbite monostearate, etc.); POE-glycerin fatty acid esters (eg, POE-glycerin) Monostearate, POE-glycerol monoisostearate, POE-monooleate such as POE-glycerol triisostearate, etc.); POE-fatty acid esters (for example, POE-distearate, POE-monodiolate, ethylene glycol distearate, etc.); POE-alkyl ethers (eg POE- Uril ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic type (for example, Pluronic, etc.); POE / POP-alkyl ether (For example, POE / POP-cetyl ether, POE / POP-2-decyltetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerin ether, etc.); Tetra POE / tetra POP-ethylenediamine condensates (eg Tetronic, etc.); POE-castor oil hardened castor oil derivatives (eg POE-castor oil, POE-hardened castor oil, POE-hardened castor oil monoisostearate, POE-hardened castor Oil triisostearate, POE-hardened castor oil monopyroglutamic acid monoisostearic acid diester, POE-hardened castor oil maleic acid, etc.); PO E-beeswax lanolin derivatives (eg POE-sorbite beeswax); alkanolamides (eg coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid ester; POE-alkylamine POE-fatty acid amide; sucrose fatty acid ester; alkyl ethoxydimethylamine oxide; trioleyl phosphate and the like.

  Examples of humectants include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate Sodium lactate, bile salt, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, yarrow extract, merirot extract and the like.

  Examples of natural water-soluble polymers include plant-based polymers (for example, gum arabic, gum tragacanth, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (Rice, corn, potato, wheat), glycyrrhizic acid); microbial polymers (eg, xanthan gum, dextran, succinoglucan, bullulan, etc.); animal polymers (eg, collagen, casein, albumin, gelatin, etc.), etc. Is mentioned.

  Semi-synthetic water-soluble polymers include, for example, starch polymers (eg, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate) Hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder and the like); alginic acid polymers (for example, sodium alginate, propylene glycol alginate, etc.) and the like.

  Synthetic water-soluble polymers include, for example, vinyl polymers (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer); polyoxyethylene polymers (eg, polyethylene glycol 20,000, 40,000, 60,000). Polyoxyethylene polyoxypropylene copolymer, etc.); acrylic polymers (for example, sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers, and the like.

  Examples of thickeners include gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (malmello), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, CMC, hydroxyethylcellulose, hydroxypropyl Cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, cellulose dialkyldimethylammonium sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, silicate A1Mg (vee gum), Examples thereof include laponite and silicic anhydride.

  Examples of UV absorbers include benzoic acid UV absorbers (eg, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester. N, N-dimethyl PABA ethyl ester, N, N-dimethyl PABA butyl ester, N, N-dimethyl PABA ethyl ester, etc.); anthranilic acid-based ultraviolet absorbers (eg, homomenthyl-N-acetylanthranylate, etc.); Salicylic acid ultraviolet absorbers (for example, amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, etc.); cinnamic acid ultraviolet absorbers (for example, octylcinnamate, ethyl- 4-isopropyl cinnamate, methyl -2,5-diisopropylcinnamate, ethyl-2,4-diisopropylcinnamate, methyl-2,4-diisopropylcinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxy Cinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenyl Cinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-diparamethoxycinnamate, etc.); benzophenone ultraviolet absorbers (for example, 2,4-dihydroxybenzophenone, 2 , 2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2 , 2 ', 4,4'-Tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate 4-phenylbenzophenone, 2-ethylhexyl-4′-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.); 3- (4 ′ -Methylbenzylidene) -d, l-camphor, 3-benzylidene-d, l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2- (2 '-Hydroxy-5'-t-octylphenyl) benzotriazole; 2- (2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4'-t-butyldibenzoyl Methane; 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one and the like.

  Examples of the sequestering agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, and tetrasodium edetate. Sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyl triacetate and the like.

  Examples of the lower alcohol include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like.

  Examples of the polyhydric alcohol include divalent alcohols (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, Pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trivalent alcohol (eg, glycerin, trimethylolpropane, etc.); tetravalent alcohol (eg, 1,2,6) Pentaerythritol such as hexanetriol); pentahydric alcohol (eg, xylitol, etc.); hexavalent alcohol (eg, sorbitol, mannitol, etc.); polyhydric alcohol polymer (eg, diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene Glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, etc.); divalent alcohol alkyl ethers (for example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene) Glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono 2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc.) ; Dihydric alcohol alkyl ester Tellurium (for example, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether , Propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, etc.); divalent alcohol Ether esters (eg, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazinate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol) Monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc .; glycerin monoalkyl ether (for example, xyl alcohol, ceralkyl alcohol) Sugar alcohol (for example, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugar, maltose, xylitolose, amylolytic sugar reducing alcohol, etc.); Solid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether; POP / POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP / POE-pentane erythritol Examples include ether and polyglycerin.

  Monosaccharides include, for example, tricarbon sugars (eg, D-glyceryl aldehyde, dihydroxyacetone, etc.); tetracarbon sugars (eg, D-erythrose, D-erythrulose, D-treose, erythritol, etc.); pentose sugars (eg, , L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc .; hexose (eg, D-glucose, D-talose, D) -Bucicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); pentose sugar (eg, aldheptose, heproose, etc.); octose sugar (eg, octulose, etc.); For example, 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc .; amino sugar (eg, D-glucosamine, D-galactosamine, shea Acid, Aminouron acid, muramic acid); uronic acid (e.g., D- glucuronic acid, D- mannuronic acid, L- guluronic acid, D- galacturonic acid, L- iduronic acid) and the like.

  Examples of the oligosaccharides include sucrose, gnocyanose, umbelliferose, lactose, planteose, isoliquinoses, α, α-trehalose, raffinose, lycnose, umbilicin, stachyose verbusose and the like.

  Examples of the polysaccharide include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, kerato sulfate. , Locust bingham, succinoglucan, caronic acid and the like.

  Examples of amino acids include neutral amino acids (eg, threonine, cysteine, etc.); basic amino acids (eg, hydroxylysine, etc.) and the like. Examples of amino acid derivatives include acyl sarcosine sodium (lauroyl sarcosine sodium), acyl glutamate, acyl β-alanine sodium, glutathione, and pyrrolidone carboxylic acid.

  Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol. Is mentioned.

  Examples of the polymer emulsion include an acrylic resin emulsion, a polyethyl acrylate emulsion, an acrylic resin liquid, a polyacryl alkyl ester emulsion, a polyvinyl acetate resin emulsion, and a natural rubber latex.

  Examples of the pH adjuster include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.

  Examples of vitamins include vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin and the like.

  Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters and the like.

  Examples of the antioxidant assistant include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

  Examples of other components that can be blended include antiseptics (ethyl paraben, butyl paraben, etc.); anti-inflammatory agents (eg, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); Extract, placenta extract, saxifrage extract, arbutin, etc.); various extracts (eg, buckwheat, auren, shikon, peonies, assembly, birch, sage, loquat, carrot, aloe, mallow), iris, grape, yokuinin, loofah, lily , Saffron, nematode, ginger, hypericum, onionis, garlic, capsicum, chimney, red snapper, seaweed, etc.), activator (eg, royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (eg, nonyl acid wallenylamide, nicotine) Acid Gyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, gingerone, cantalis tincture, ictamol, tannic acid, α-borneol, nicotinic acid tocopherol, inositol hexanicotinate, cyclandrate, cinnarizine, trazoline, acetylcholine, verapamil, cephalanthin , Γ-oryzanol, etc.); antiseborrheic agents (eg, sulfur, thianthol, etc.); anti-inflammatory agents (eg, tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

  Using the cosmetic powder of the present invention, an emulsified foundation, a powder foundation, an oily foundation, an eye shadow, a cheek color, a body powder, a perfume powder, a baby powder, a face powder and the like are produced by a known method.

[Example]
EXAMPLES Next, the present invention will be specifically described with reference to examples. However, the present invention is not limited to the examples without departing from the gist of the present invention. Unless otherwise specified, “part” means “part by weight” and “%” means “% by weight”.

<Example 1>
Aqueous dispersion of polystyrene particles [manufactured by Sekisui Chemical Co., Ltd., volume average particle diameter (hereinafter sometimes referred to as _{D V.): 300nm, Cv} : 3% or less, solid concentration: 10%], and on a glass substrate By dropping and allowing to stand at 60 ° C., an opal structure having a diameter of about 5 cm and a thickness of 100 μm was produced. The thickness was measured with an eddy current film thickness meter EDY-1000 (manufactured by Sanko Electronics Co., Ltd.).
A photonic crystal in which a two-component curable silicone resin (manufactured by Shin-Etsu Silicone) is filled in the gap between the opal structures and subjected to a curing reaction at 90 ° C. for 10 hours, and the gap between the opal structures is filled with the silicone resin. (PC1-1) was obtained.
Photonic crystal (PC1-1) was pulverized with a mixer, and Dv was adjusted to 5 μm to obtain a cosmetic powder (C-1).

<Example 2>
Aqueous dispersion of polystyrene particles (manufactured by Sekisui Chemical Co., Ltd., volume average particle diameter (hereinafter, sometimes referred to as _{D V):. 250nm, Cv} : 3% or less, solid concentration: 10%), and on a glass substrate By dropping and allowing to stand at 60 ° C., an opal structure having a diameter of about 5 cm and a thickness of 100 μm was produced. The thickness was measured with an eddy current film thickness meter EDY-1000 (manufactured by Sanko Electronics Co., Ltd.).
A photonic crystal in which a two-component curable silicone resin (manufactured by Shin-Etsu Silicone) is filled in the gap between the opal structures and subjected to a curing reaction at 90 ° C. for 10 hours, and the gap between the opal structures is filled with the silicone resin. (PC1-2) was obtained.
Photonic crystals (PC1-2) crushed with a mixer and adjusted to a Dv of 5 μm are mixed with mica having an average particle diameter of 40 μm at 40:60 (volume ratio), slurried in an aqueous alcohol solution, and then spray dried. As a result, a cosmetic powder (C-2) having a photonic crystal (PC1-2) attached to the mica surface was obtained.

<Example 3>
The gap between the opal structures, which are the precursors of the photonic crystal (PC1-2), is filled with titania sol made from ethanol, titanium tetraisopropoxide, water and hydrochloric acid, which are precursors of titanium oxide, and ethanol and water are added. After drying and removing, the polystyrene fine particles were thermally decomposed and removed by baking at 500 ° C. to obtain a photonic crystal (PC2-1) having an inverse opal structure made of titanium oxide.
Photonic crystal (PC2-1) was pulverized with a mixer, and Dv was adjusted to 5 μm to obtain a cosmetic powder (C-3).

<Comparative Example 1>
Monodisperse polymethyl methacrylate (PMMA) particles having a Dv of 300 nm and mica having an average particle diameter of 40 μm are mixed at 40:60 (volume ratio), slurried in an aqueous alcohol solution, and then spray-dried to obtain a simple mica surface. A composite powder (CE-1) having dispersed PMMA particles adhered thereto was obtained.

<Comparative Example 2>
Monodisperse polymethyl methacrylate (PMMA) particles having a Dv of 250 nm and mica having an average particle diameter of 40 μm are mixed at 40:60 (volume ratio), slurried in an aqueous alcohol solution, and then spray-dried. A composite powder (CE-2) having dispersed PMMA particles adhered thereto was obtained.

<Evaluation of actual use characteristics>
20 female panelists were applied with a powder foundation containing the cosmetic powders of Examples 1 to 3 and the composite powders of Comparative Examples 1 and 2, and the skin color defects (dullness, blotches / freckle, red The effect of correcting taste, bear around the eyes, etc., the naturalness of the finish, transparency, and the sustainability of the correction effect were evaluated. Example 1 and Comparative Example 1, Example 2 and Comparative Example 2, Example 3 and Comparative Example 2 were compared with each other, and a foundation that felt that the above characteristics were excellent was selected. It can be said that the foundation with many choices is excellent in the acquisition property.

The powder foundation was manufactured by a conventional method.
In Examples 1 and 3, the cosmetic powder, the flaky powder, and the following other blending components were mixed at the blending ratio shown in Table 1 to produce. In Example 2, the cosmetic powder and the following other blending components were mixed at the blending ratio shown in Table 1 to produce. In Comparative Examples 1 and 2, the composite powder and the following other blending components were mixed at the blending ratio shown in Table 1 for production.
Other ingredients and ratios are 17 parts of sericite, 10 parts of synthetic mica, 10 parts of titanium oxide, 0.8 part of Bengala, 2 parts of yellow iron oxide, 0.1 part of black iron oxide, 2 parts of zinc oxide, silicone elastic powder 2 Part, dimethylpolysiloxane 3 parts, liquid paraffin 5 parts, petrolatum 5 parts, paraben 0.05 parts, antioxidant proper amount 0.05 parts, fragrance 0.05 parts.

Table 1 shows the compositions and evaluation results of Examples 1 to 3 and Comparative Examples 1 and 2.
It was found that the foundations of any of the examples had characteristics superior to the foundations of the comparative examples having the same blending ratio. In particular, it was possible to obtain a high evaluation for the correction effect of the color defect and its sustainability.

  The cosmetic powder of the present invention corrects color defects such as dullness and blemishes on the skin, freckles, redness, dark circles around the eyes, emulsification foundation, powder foundation, oil foundation, eye shadow, cheek color, It can be used for various makeup cosmetics such as body powder, perfume powder, baby powder and face powder.

Claims (4)

  A photonic crystal composed of true spherical fine particles (P), a photonic crystal (PC1) having a structure in which a resin is filled in a space between the true spherical fine particles (P), and a photonic crystal having an inverse opal structure thereof Cosmetic powder comprising at least one of (PC2) as an essential constituent.   The powder for cosmetics according to claim 1, wherein the volume average particle size of the true spherical fine particles (P) is 0.1 to 0.5 µm.   The cosmetic powder according to claim 1 or 2, wherein at least one of the photonic crystal (PC1) and the photonic crystal (PC2) is attached to the surface of the flaky powder (F).   The flaky powder (F) is at least one selected from the group consisting of mica, talc, silica, alumina, aluminum, titanium oxide, titanium mica, boron nitride, synthetic mica, hydroxyapatite, and barium sulfate, The powder for cosmetics according to claim 3, whose volume average particle diameter is 1 to 150 µm.