WO2007097128A2

WO2007097128A2 - Powder cosmetic composition cotaining humectant in high concentration

Info

Publication number: WO2007097128A2
Application number: PCT/JP2007/000547
Authority: WO
Inventors: Katsuyuki Kaneko; Tomoko Ikeda; Tetsuya Kanemaru; Yasunari Nakama
Original assignee: Shiseido Company, Ltd.
Priority date: 2006-05-23
Filing date: 2007-05-22
Publication date: 2007-08-30
Also published as: WO2007097128A3

Abstract

A powder cosmetic, characterized by containing 5 to 70 mass% of a calcined clay mineral (a) and 3 to 20 mass% of a humectant (b) exhibiting a moisture absorption as specified below and by having a content of powder inclusive of the mineral of 60 to 95 mass% based on the whole cosmetic: moisture absorption: a weight change of 0.2 to 30% as determined by accurately weighting 5g of the humectant (b) into a 20ml screw tube and allowing it to stand for a whole day and night under the conditions of 37°C and 98% relative humidity. The invention aims at providing a high-quality and stable powder cosmetic which has excellent moisturizing effect and which little causes hardness change even in a humidified atmosphere and exhibits high drop strength.

Description

Specification

Highly moisturizing ingredient powder cosmetic composition

Technical field

TECHNICAL FIELD [0001] The present invention relates to a powder cosmetic, and particularly to a powder cosmetic having an excellent moisturizing effect and high stability.

Background art

[0002] Conventional powder cosmetics are composed of body pigments such as talc, my strength and sericite, colored pigments such as iron oxide, oils, surfactants, fragrances, antioxidants, preservatives, etc. Makeup cosmetics such as scarlet and eye shadow, baby powder, etc. are on the market. These products generally contain several to 30% of oil as a binder to reduce the powderiness when applied to the skin and as a binder for molding into a solid dish. is there.

[0003] However, such solid powder cosmetics have the drawbacks of lack of moisture retention and low treatment effect on the skin. Therefore, studies are being made to mix various humectants. However, when a high moisturizing component is added to give a sufficient moisturizing effect to the powder cosmetic, the problem is that the amount of change in the hardness of the molded product is large, especially when stored for a long time in a humidified environment. It was. Specifically, the molded product after storage was softened, and this strength reduction caused the inconvenience that it was extremely weak to impact such as dropping. In addition, defects such as water droplets appearing on the surface of the molded product after storage occurred, and quality deterioration as a product was a problem. Such a problem is caused by the fact that the humectant inherently has a high hygroscopic property.

[0004] Patent Documents 1 to 3 are known as powder cosmetics containing a moisturizing agent. Among them, Patent Document 1 stably blends a moisturizer by hydrophobizing a powder of a specific ratio or more in the total powder amount. In Patent Document 2, by adding trehalose, moist and freshness is given to the skin. In Patent Document 3, specific polyethylene glycol, polyoxyethylene methyl darcoside Or by adding polyoxypropylene nutyl darcoside, it gives a moisturizing effect to the skin.

However, none of the inventions described in these patent documents can solve the above problems when stored in a humidified environment for a long time while exhibiting a sufficient moisturizing effect.

Patent Document 4 is a technique related to the calcined clay mineral used in the present invention, but this is mainly intended to solve the disadvantages due to the coexistence of oil and clay minerals, and is not a high-mixing moisturizer. .

Patent Document 1: Japanese Patent Laid-Open No. 6_2 1 9 9 2 5

Patent Document 2: Japanese Patent Application Laid-Open No. 6-4 0 8 4 5

Patent Document 3: Japanese Patent Application Laid-Open No. 10-1 7 5 8 2 3

Patent Document 4: Japanese Patent Application Laid-Open No. Sho 5 7-1 6 9 4 1 2

Disclosure of the invention

Problems to be solved by the invention

[0006] Therefore, the present inventors have examined the ingredients of the powdery cosmetic material, exhibit a sufficient moisturizing effect, and further have a molding hardness even when stored for a long time in a humidified environment. The object is to provide a powder cosmetic that does not soften and can maintain excellent quality.

Means for solving the problem

[0007] The present inventor has found that there is a difference in degree of the above-mentioned problems depending on the type of extender pigment, and has examined the combination of a moisturizer and extender pigment in detail. By adding a calcined clay mineral, The present invention has found that the above-mentioned problems can be solved while maintaining a moisturizing effect. The present invention comprises (a) 5 to 70% by mass of a calcined clay mineral, and (b) a moisturizing agent component having a hygroscopic property represented by the following measurement conditions 3 to 2 It is a powder cosmetic characterized by containing 0% by mass.

Hygroscopic measurement conditions: 5 g of the moisturizer component is accurately weighed and placed in a 2 O m I screw tube, and the mass change rate when left at 37 ° C relative humidity 98% for 24 hours is 0.2% Less than The upper limit is 30% or less.

[0009] The method for producing a powder cosmetic according to the present invention comprises mixing a cosmetic ingredient containing a calcined clay mineral and a moisturizer with one or more selected from water and lower alcohols to form a slurry, and the inside is The slurry is poured into a heated / dried chamber to form a miscellaneous shape, and then the miscellaneous material is collected and molded.

The invention's effect

[0010] According to the present invention, even if a sufficient amount of a moisturizing agent is added to exert a high moisturizing effect, the molding hardness is not softened, and as a result, the drop strength does not decrease. A powdery cosmetic that does not cause water droplets on the surface of the product can be provided.

[0011] [Fig. 1] Fig. 1 is a graph showing the moisturizing effect when the foundation of the formulation of Example 9 in Table 9 is subjected to a continuous test.

BEST MODE FOR CARRYING OUT THE INVENTION

[0012] The best mode of the present invention will be described below.

The powder cosmetic of the present invention comprises (a) 5 to 70% by mass of a calcined clay mineral, and (b) 3 to 20% by mass of a moisturizing component having hygroscopicity indicated by the following measurement conditions. It is what.

The hygroscopicity measurement condition is as follows: 5 g of the humectant component (b) was precisely weighed into a 20 ml squeeze tube, and the weight change rate when left standing at 37 ° C relative humidity 98% for 24 hours. Is 0.2% or more, preferably 0.5% or more and 30% or less.

First, the fired clay mineral (a) will be described.

As the calcined clay mineral, calcined sericite, calcined my strength or calcined talc can be applied, and these may be used after being hydrophobized, or may be used alone or in combination. Of these, calcined sericin and calcined my strength are excellent in terms of effect, and the coexistence with the oil component is particularly advantageous in that it has less color dullness. 卜 is preferred.

[0014] The calcined clay mineral has a high hardness change inhibiting effect, and by making a powder cosmetic containing the calcined clay mineral, the amount of change in hardness is extremely small even when stored for a long time in a high humidity environment. Become. In addition, conventional powder cosmetics have problems such as generation of water droplets on the surface when stored in a high humidity environment for a long time. There is no such problem in powder cosmetics.

That is, by including the calcined clay mineral, high quality stability can be obtained as compared with conventional powder cosmetics.

[0015] Since the calcined clay mineral has a large oil absorption, it can prevent caking even if it is applied to a system containing a large amount of oil. Also, when applied to the skin, the finish is not powdery, there is no dullness, and a sufficient amount can be secured from the hardened state, which is excellent in usability.

[0016] The fired clay mineral is obtained by subjecting a predetermined material to a firing process, for example, at 100 ° C for 2 hours in an electric furnace, followed by a washing process, a drying process, and a pulverizing process. can get.

[0017] The amount of the calcined clay mineral is 5 to 70% by mass, preferably 10 to 50% by mass, based on the total amount of the cosmetic. When the amount of the calcined clay mineral is less than 5% by mass, the hardness change after long-term storage is large and the strength is remarkably reduced. When the blending amount of the calcined clay mineral exceeds 70% by mass, the usability such as toughness and elongation deteriorates. The calcined clay mineral is preferably blended in the range of 10% by mass or more and 80% by mass or less with respect to the powder component in the blended cosmetic composition from the viewpoint of change in hardness and usability.

Next, the humectant component (b) will be described.

Examples of humectants include glycerin, polyoxyethylene polyoxypropylene dimethyl ether, 1,3-butylene glycol, polyethylene glycol, diglycerin, dipropylene glycol, xylyl I ^ l, trehalose, erythritol, hyaluronic acid And a kind selected from urea and Two or more types can be mentioned. Among these, polyoxyethylene polyoxypropylene dimethyl ether includes polyoxyethylene _ 9 _ polyoxypropylene 1-dimethyl ether, polyoxyethylene 1 1 4 _ polyoxypropylene 1 7-dimethyl ether, polyoxyethylene _ 3 6 _Polyoxypropylene 4 1-dimethyl ether, polyoxyethylene _ 5 5 _Polyoxypropylene 1 28-dimethyl ether, etc.

These may be used alone or in combination of two or more.

[0019] The amount of the humectant component is 3 to 20% by mass, preferably 5 to 15% by mass.

If the blending amount of the humectant component is less than 3% by mass, a sufficient moisturizing effect cannot be exhibited and the drop strength is weakened. If the amount of the humectant component exceeds 20% by mass, the degree of removal when the molded product is rubbed is poor, and the change in hardness after long-term storage also increases. In the past, it was impossible to mix humectants such as glycerin into powder cosmetics (powder leaf, etc.) due to caking and water droplets, but in this application it is possible to add more than 5% by weight. It is.

[0020] The humectant component applied to the powder cosmetic of the present invention satisfies a predetermined hygroscopicity under the following measurement conditions.

The measurement conditions are as follows: 5 g of a moisturizer component is precisely weighed into a 2 O m I screw tube and left to stand at 37 ° C and relative humidity of 98 0/0 overnight. / 0 or more and 30% or less.

Moisturizing ingredients with a mass change rate of less than 0.2% can cause powdery appearance, and moisturizing ingredients with a mass change rate of more than 30% can cause sticky makeup.

[0021] The hygroscopicity of the specific humectant material under the above conditions is shown below.

Table 1 shows the mass (g), mass increase rate (%), and average value (%) of mass increase rate due to moisture absorption when each material was measured twice by the above method. Yes.

[0022] [table 1]

*: Silicone KF56 (Shin-Etsu Chemical Co., Ltd.)

According to Table 1, all of the specific moisturizers listed above satisfy the above conditions. It was confirmed that

On the other hand, squalene, glyceryl tri-2-ethylhexylate, and methylphenylpolysiloxane do not satisfy the above conditions, and are inappropriate as a humectant for the powder cosmetic of the present invention. Therefore, it can be said that hydrocarbon oil, ester oil, and silicone oil do not satisfy the above conditions and are inappropriate.

[0024] The powder cosmetic of the present invention can be produced by a conventional method, but is particularly preferably produced by a wet and dry method adjusted by a dryer suitable for high dispersion retention, specifically, By the following method.

A raw material component, that is, a predetermined calcined clay mineral, an inorganic powder, a pigment, an activator, a humectant component, and the like are mixed with one or two or more kinds selected from water and lower alcohols as a solvent to form a slurry. Next, the slurry is poured into a chamber which is dry inside, hot air is fed from below, and is stirred by the rotation of the propeller. The raw material slurry becomes mist and is dried by stirring to become a fine powder. Subsequently, the powder powder of the present invention can be obtained by collecting the fine powder with a cyclone apparatus and filling it into a container. Here, ethanol is preferred as the lower alcohol.

By applying such a wet, and dry method, a powdery cosmetic material can be obtained that exhibits effects such as less softening of hardness and no generation of water droplets compared to conventional dry molding methods.

[0025] In addition to the above-mentioned essential components, the cosmetic of the present invention, if necessary, oil, powders other than the above, surfactants, thickeners, drugs such as vitamins, fragrances, antioxidants, Ingredients usually used in cosmetics such as antiseptic and antifungal agents can be blended within a range not impairing the effects of the invention.

[0026] For example, as the oil component, Apo force 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 power oil, castor oil, Amani oil, safflower oil, cottonseed oil, Eno oil, soybean oil, peanut oil, tea seed oil, cypress oil, rice bran oil, cinnabari oil, Japanese kiri oil, jojoba oil, germ oil, Triglycerin, trio Liquid fats and oils such as glyceryl cutanate and glycerin triisopalmitate, powerful oil, palm oil, horse fat, hardened palm oil, palm oil, beef fat, sheep fat, hardened beef fat, palm kernel oil, pork fat, beef bone Solid fats such as fat, owl kernel oil, hydrogenated oil, beef leg oil, owl, hydrogenated castor oil, beeswax, candelilla wax, cotton wax, carnauba wax, berryberry wax, ibotarou, whale wax, montan wax, nukarou, lanolin, kapok wax, Lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, lauryl hexyl, reduced lanolin, jojobaro, hard lanolin, shellac wax, P0E lanolin alcohol ether, P0E lanolin alcohol acetate, P0E cholesterol ether, lanolin fatty acid polyethylene glycol P0E waxes such as hydrogenated lanolin alcohol ether, liquid paraffin, ozokerite, squalene, pristane, paraffin, selenium, squalene, petrolatum, microcrystalline wax, and other synthetic ester oils such as isopropyl myristate, octane Cetyl acid, octyldodecyl myristate, isopropyl palmitate, ptyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isostearin Isocetyl acid, cholesteryl 12-hydroxystearylate, di-2-ethylhexyl acid ethylene glycol, dipentaerythritol fatty acid ester, Noisostearic acid N-alkyldaricol, neopentyldaricol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, tri-2-ethylethylhexylate trimethylolpropane, trimethylol triisoisostearate Propane, tetra-2-ethylhexyl hexanoate! ^ Il, Tri-2-ethylhexyl hexylate, Trimethylol propylene triisostearate, Cetyl 2-ethyl hexanoe, 2-ethyl hexyl palmitate, 卜 Rimyristate glycerin, Tri-2-he Ptylrundecanoic acid glyceride, castor oil fatty acid methyl ester, oleic acid oil, cetostearyl alcohol, acetoglyceride, palmitate 2-heptylundecyl, adipic acid Diisoptyl, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyl palmitate Xyldecyl, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, etc., silicones include dimethylpolysiloxane, methylphenol poly Cyclic polysiloxanes such as siloxane and methylhydropolysiloxane, cyclic polysiloxanes such as decamethylpolysiloxane, dodecamethylpolysiloxane, and tetramethyltetrahydrodienepolysiloxane, silicone resins that can form a three-dimensional network structure And silicon rubber

[0027] Examples of powders other than the above include talc, sericin, my strength, kaolin, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium gay, tandastanic acid Metal salt, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcium phosphate, fluorapatite, hydroxyapatite, metal sarcophagus, boron nitride, nylon powder, polyethylene powder, cellulose powder, silicone powder, zinc white, etc. Extender pigments; carbon black, titanium oxide, zinc oxide, ultramarine, bitumen, chromium oxide, organic tar pigments, lakes and other colorants; composite pigments such as mica titanium, iron oxide coated mica; and siliconization of these powders Compound, fluorine-modified silicone compound, fluorine compound, higher fatty acid, higher alcohol, fatty acid ester, metal sarcophagus, amino acid, quaternary ammonium salt, alkylphosphine and the like.

[0028] The method for hydrophobizing the powder may be any method as long as the powder can be hydrophobized, for example, a gas phase method, a liquid phase method, an autoclave method, a mechanochemical method, etc. A surface treatment method can be used.

[0029] For example, in the case of performing treatment by adding a hydrophobizing agent to the raw material powder, a suitable solvent (Dichloromethane, chloroform, hexane, ethanol, xylene, volatile silicone, etc.) may be diluted and added, or may be added directly. For mixing and stirring of powder and treatment agent, a pole mill, a hogersite pole mill, a vibrating pole mill, an attritor, a pot mill, a rod mill, a pan mill, a homomixer, a homodisper, a henshi Iru mixer, a nauta mixer, etc. can be used. . In addition, a method of polymerizing cyclic organosiloxane on the powder surface at a low temperature of 100 ° C or less by gas phase reaction using the activity of the powder surface (JPB 1-5 4 3 8 0 And a method in which a pendant group such as glycerol monoallyl ether is added to the Si_H portion of the surface silicone polymer after the above method (Japanese Patent Publication No. 1_5 4 3 8 1). I can do it. The technical matters regarding such hydrophobization treatment are the same for the calcined clay minerals that have been hydrophobized.

Examples of the hydrophobized powder include fatty acid dextrophosphorylated powder, trimethylsiloxysilicic acid treated powder, fluorine-modified trimethylsiloxysilicic acid-treated powder, methylphenylsiloxysilicic acid-treated powder, fluorine-modified methylphenylsiloxysilicate-treated powder, dimethylpoly Low-viscosity high-viscosity oily polysiloxane-treated powder such as siloxane, diphenylpolysiloxane, methylphenylpolysiloxane, gum-like polysiloxane-treated powder, methylhydrodienepolysiloxane-treated powder, fluorine-modified methylhydropolyenepolysiloxane Treatment powder, methyltrichlorosilane, methyltrialkoxysilane, hexamethyldisilane, dimethyldialkoxysilane, dimethyldialkoxysilane, trimethylchlorosilane, trimethylalkoxysilane, etc. Treated powders with silyl compounds or their fluorine-substituted products, etyltrichlorosilane, etyltrialkoxysilane, propyltrichlorosilane, propyltrialkoxysilane, hexyltrichlorosilane, hexyltrialkoxysilane, long-chain alkyl 卜 lichlorosilane, long-chain alkyl 卜Organically modified silane such as reethoxysilane or their fluorine-substituted product-treated powder, amino-modified polysiloxane-treated powder, fluorine-modified polysiloxane-treated powder, fluorinated alkyl phosphate-treated powder, Examples include alkyl phosphate treated powder.

[0031] The blending amount of the powder including the (a) calcined clay mineral of the present invention is preferably 60 to

9 5% by mass.

[0032] Examples of the lipophilic nonionic surfactant include sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, penta Sorbitan fatty acid esters such as -2-ethylhexylhexyl diglycerol sorbitan, tetra-2-ethylhexyl glycerol disorbate sorbitan, mono cottonseed oil fatty acid glycerin, mono-el strength acid glycerin, sesquioleate glycerin, monostearate glycerin Glycerol polyglycerin fatty acids such as glyceryl monopyramate, glyceryl monostearate, and propylene glycol fatty acid esters such as propylene glycol monostearate Hardened castor oil derivatives, glycerin § Ruki ethers and the like.

Examples of hydrophilic nonionic surfactants include P0E sorbitan fatty acid esters such as P0E sorbitan monooleate 卜, P0E-sorbitan monostearate, P0E-sorbitan monooleate, P0E- sorbitan tetraoleate E, P0E -Solbit monolaurate, P0E-Sorbit monolayer, P0E-Sorbit monolayer, P0E sorbitol fatty acid esters, P0E-glycerin monostearate, P0E-glycerin monostearate P0E glycerin fatty acid esters such as isostearate, P0E-glycerin triisostearate, P0E monolayer, P0E distearate, P0E monodiole, P0E fatty acid esters such as ethylene glycol stearate, P0E lauryl ether, P0E Rail ether, P0E stearyl ether P0E alkyl ethers such as P0E benenyl ether, P0E2-octyldodecyl ether, P0E cholestanol ether, P0E alkyl ethers such as P0E octyl phenyl ether, P0E nonyl phenyl ether, P0E dinonyl phenyl ether, Bull mouth nick type such as bull mouth nick, P0E POP cetyl ether, Ρ0Ε · P0E POP alkyl ethers such as P0P2-decyltetradecyl ether, P0E POP monobutyl ether, P0E POP hydrogenated lanolin, P0E POP glycerin ether, Tetronic etc. Tetra P0E tetra POP ethylenediamine amine condensates, P0E castor P0E castor oil such as P0E hydrogenated castor oil, P0E hydrogenated castor oil monoisostearate, P0E hydrogenated castor oil triisostearate, P0E hydrogenated castor oil monopyroglutamic acid monoisostearic acid diester, P0E hydrogenated castor oil maleic acid, etc. Hardened castor oil derivative, P0E beeswax such as P0E sorbite beeswaxLanoline derivative, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, alanol amide such as fatty acid isopropanolamide, P0E propylene glycol fatty acid ester, P0E alkylamine, P0E fat Examples thereof include fatty acid amides, sucrose fatty acid esters, P0E nonylphenyl formaldehyde condensates, alkyl ethoxydimethylamine oxide, and trioleyl phosphate.

[0033] As vitamins, vitamin A such as vitamin A palmitate, vitamin B such as pyridoxine hydrochloride, vitamin C such as L-ascorbic acid, L-ascorbic acid sulfate, and L-ascorbic acid phosphate, Cholecalcifer Examples thereof include vitamin D such as roll and ergocalciferol, and vitamin D such as δ-tocopherol and vitamin catechol.

[0034] Examples of the ultraviolet absorber include paraaminobenzoic acid (hereinafter abbreviated as ΡΑΒΑ), Ρ ABA monoglycerin ester, Ν, Ν-dipropoxy PABA ethyl ester, Ν, Ν-diethoxy ethoxy ester, Ν, Ν-dimethyl PABA Benzoic acid UV absorbers such as ethyl ester, Ν, Ν-dimethyl PABA butyl ester, N, N-dimethyl PABA methyl ester, anthranilic acid UV absorbers such as homomenthyl-N-acetyl anthranilate, Amylza Salicylic acid UV absorbers such as lysylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, P-isopropanol phenyl salicylate, octylcinnamate, ethyl-4 -Isopropyl cinnamate 卜, methyl-2,5-diisopropyl Rucinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-P-meth Xycinnamate, Isopropyl-P-methycinnamate, Isoamyl-P-methycinnamate, Octyl-P-methycinnamate (2-Ethylhexyl-P-methycinnamate), 2-Ethoxyethyl-P- Methoxycinnamate, Cyclohexyl-P-Methoxycinnamate, Ethyl-Hyc-Cyano-) S-Phenylcinnamate, 2-Ethylhexyl-H-Syano-) S-Phenylcinnamate, Glyceryl Mono-2 Cinnamic acid UV absorbers such as -ethylhexylol-diparamethycinnamate, 3- (4'-methylbenzylidene) -d, 1-camphor, 3-benzylidene-d, 1-camphor, urocanic acid, urocanic acid Ethyl ester, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2- (2'-hydroxy-5'-t- Octylphenyl) benzotriazole, 2- (2'-hydroxy-5'-methylphenylpenzotriazole, dibenzalazine, dianisolmethane, 4-methoxy-4'-t-butyldibenzoylmethane 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one and the like.

[0035] Examples of preservatives include methylparaben, ethylparaben, propylparaben, butylparaben, phenoxyethanol, N-coconut oil fatty acid acyl, L-arginineethyl DL-pyrrolidone carboxylate, sodium devidroacetate, Ethylhexyl glycerin, (silver Z zinc Z ammonium) zeolite.

[0036] The powder cosmetic of the present invention can be applied to various forms of cosmetics such as powdery foundation, press powder, eye shadow, loose powder, and scarlet.

Example

[0037] Hereinafter, specific examples will be described. However, the present invention is not limited to the following examples. Unless otherwise specified, the amount is shown in mass%.

[0038] Examples 1 to 7, Comparative Examples 1 to 4

As the clay mineral, calcined or uncalcined sericite was used, and powder cosmetics having the formulations shown in Table 2 below were prepared by a conventional method.

Subsequently, the characteristics of these powder cosmetics were evaluated. The results are shown in Table 2. Show. Evaluation items are hardness change, hardness change, and usability. The evaluation method is shown below.

[0039] (Change in hardness)

After standing in an environment of 37 ° C and 90% relative humidity, the hardness value was measured using an Orzen hardness tester from Ueshina, and the difference from the initial value (hardness change) was calculated. If it is within 5, it is a practically good value, and 20 or more is a practically unacceptable value.

◯: Hardness change 0 to 1 0

□: Hardness change 1 1 to 1 5

Δ: Hardness change 1 5 to 2 0

: Hardness change 20 or more

[0040] (Drop strength)

Powder cosmetics were molded, and then the strength when repeatedly dropping from a height of 30 cm with the product surface facing downward was evaluated.

Y: Sufficient strength

□: Slightly strong

Δ: Slightly insufficient strength

X: Insufficient strength

[0041] (Usability)

Panel test 1 Sensory evaluation was conducted by 10 people.

O: More than 7 people responded that they are moist, stretchy, or have a uniform finish.

Δ: 3 to 6 people who responded that they were moist, stretchy, or finished.

X: No more than 2 people responded that they are moist, stretchy, or have a uniform finish.

[0042] [Table 2]

*, Silicone KF6015 (Shin-Etsu Chemical Co., Ltd.)

As shown in Table 2, in Example 1 which is a powder cosmetic according to the present invention, all evaluations of change in hardness, drop strength, and usability were good. On the other hand, in Comparative Examples 1 to 3 in which the amount of baked sericin was very small and a large amount of unsintered sericin was compounded, the amount of change in hardness was large and sufficient strength was not obtained practically. there were. In Comparative Example 4 in which a large amount of baked sericin was contained, usability deteriorated.

[0044] Examples 8 to 14, Comparative Examples 5 to 8

Powdered cosmetics were prepared by the methods shown in Table 3 below, using calcined or unfired My strength as clay minerals. Subsequently, the characteristics of these powder cosmetics were evaluated. The results are also shown in Table 3.

The evaluation items were hardness change, drop strength, and usability. The evaluation method and evaluation criteria were the same as described above.

[0045]

[Table 3]

*,: Silicone KF601 5 (Shin-Etsu Chemical Co., Ltd.)

As shown in Table 3, in Example 8 14 which is a powder cosmetic according to the present invention, all evaluations of hardness change, drop strength and usability were good. On the other hand, in Comparative Examples 5 to 7 where the amount of fired power was very small and a large amount of unfired power was added, the hardness change amount was large and there was no practically sufficient strength. there were. In Comparative Example 8 in which a large amount of fired power was contained, usability deteriorated.

Example 1 5 to 1 8, 3, 4, 6, Comparative Example 9 to 1 1

Using powdered sericite as a clay mineral, adjusting the amount of moisturizer, other ingredients were prepared as powdered cosmetics according to the formulation shown in Table 4 below. Subsequently, the characteristics of these powder cosmetics were evaluated. The results are also shown in Table 4.

Evaluation items are hardness change, drop strength, usability, and yield. The evaluation methods and evaluation criteria of the former three were the same as described above. The method for evaluating the yield is shown below.

[0048] (Capacity)

After molding, the degree of removal when the product surface was rubbed 100 times with a puff was evaluated according to the following criteria.

〇: Can be taken well

Δ: Taken

X: It is difficult to take

[0049]

[Table 4]

*,: Silicone KF601 5 (Shin-Etsu Chemical Co., Ltd.)

As shown in Table 4, in Examples 1 5 1 8 3 4 6 which are powder cosmetics according to the present invention, all evaluations of change in hardness, drop strength, usability, and yield were practically good. It was. On the other hand, in Comparative Example 9 in which the amount of the moisturizing agent was extremely small, the drop strength could not be evaluated practically enough, and the usability was also deteriorated. Further, in Comparative Examples 10 and 11 in which the amount of the moisturizing agent was large, a practically good evaluation was not obtained with respect to the removal amount.

[0051] Examples 1 9-2 2, 1 0, 1 1, 1 3, Comparative Example 1 2-14

Powdered cosmetics were prepared according to the formulation shown in Table 5 below, using calcined power as a clay mineral, adjusting the amount of moisturizer, and other ingredients. Subsequently, the characteristics of these powder cosmetics were evaluated. The results are also shown in Table 5.

The evaluation items were hardness change, drop strength, usability, and yield, and were evaluated using the same method as above.

[0052]

[Table 5]

*,: Silicone KF601 5 (Shin-Etsu Chemical Co., Ltd.)

As shown in Table 5, in Example 1 9 22 1 0 1 1 1 3 which is a powder cosmetic according to the present invention, evaluation of any of hardness change, drop strength, usability, and yield is practical. It was good. On the other hand, in Comparative Example 12 where the amount of the moisturizing agent was extremely small, practically sufficient evaluation was not obtained for the drop strength, and the usability was also deteriorated. Further, in Comparative Examples 13 and 14 where the amount of moisturizing agent was large, a practically good evaluation of the removal amount could not be obtained.

[0054] Examples 2 3, 2 4, Comparative Examples 1 5, 1 6

Use at least one of silicone-treated talc, silicone-treated sericite, and silicone-treated mycelium, and calcined sericite or unfired sericite as a clay mineral. Other ingredients are powdered according to the formulation shown in Table 6 below. A cosmetic was prepared. Subsequently, the characteristics of these powder cosmetics were evaluated. The results are also shown in Table 6.

The evaluation items are hardness change, drop strength, usability, yield, and appearance stability. The evaluation method of appearance stability is shown below. Other evaluations are the same as above.

[0055] (Appearance stability)

3 7. C, Visually evaluate the appearance when left at 98% relative humidity. Y: No problem

X: Problems such as “water droplets”, “rising” and “cracking” occurred.

[0056]

[Table 6]

[0057] *, Silicone K F 6 0 1 5 (Shin-Etsu Chemical Co., Ltd.)

As shown in Table 6, in Examples 23, 24, which are powder cosmetics according to the present invention, all of hardness change, drop strength, usability, yield, and appearance stability are practically good. Evaluation was obtained.

On the other hand, in Comparative Examples 15 and 16 using uncalcined sericite as a clay mineral, practically sufficient evaluation was obtained for hardness change, drop strength, yield, and appearance stability. I couldn't. Comparative Examples 15 and 16 are powder cosmetics corresponding to Patent Document 1 described in the prior art.

[0058] Example 2 5, Comparative Example 1 7

Baked or unfired talc was used as the clay mineral, and powder cosmetics were prepared according to the formulation shown in Table 7 below for the other ingredients. Subsequently, the properties of these powder cosmetics were evaluated. The results are also shown in Table 7.

Evaluation items are hardness change, drop strength, usability, evaluation method and evaluation criteria. Was the same as described above.

[0059] [Table 7]

[0060] *, Silicone K F 6 0 1 5 (Shin-Etsu Chemical Co., Ltd.)

As shown in the table, in Example 25, which is a powder cosmetic according to the present invention, all evaluations of hardness change, drop strength, and usability were good in practice. On the other hand, in Comparative Example 17 with a very small amount of calcined talc and a large amount of uncalcined talc, the amount of change in hardness was large and there was no practically sufficient drop strength, resulting in a low quality product. .

[0061] Next, formulation examples of the powder cosmetic of the present invention are shown.

Example 2 6-4 6 Powdery Foundation

Powdery foundations were prepared according to the formulations shown in Tables 8 and 9 below. None of the obtained powdery foundations had softening in hardness and good usability.

[0062] 魈 i¾¾) J (s * ν Vb :: KF6015U

0 魈. i # § † ici 厂 ^ 厂 fif 厂 ^ inM> MsM L ^ oL: _f

Hit room i 厂 5S100644748

魈 i¾¾) J (s * νVb :: KF6015U, I

None of them were softened in hardness and good in usability.

[Table 10]

[0066] Example 4 9 Eyeshadow

Eye shadows were prepared according to the formulation shown in Table 11 below. All of the obtained shadows were not softened and had good usability.

[0067]

[Table 11]

*: Silicone K F 5 6 (Shin-Etsu Chemical Co., Ltd.)

Example 5 0 Eyeshadow

Eye shadows were prepared according to the formulation shown in Table 12 below. All of the obtained shadows were not softened and had good usability.

[0069] [Table 12]

*: Silicone K F 5 6 (Shin-Etsu Chemical Co., Ltd.)

[0070] <Moisturizing effect test by actual use>

2 Nine women paneled in advance for a week without a skin care just by washing their face for 1 week in advance. It was used continuously for 4 weeks. The water content in the stratum corneum after 1 week, 1 week, 2 weeks, and 4 weeks was measured with a skin moisture meter (Corneometer).

The results are shown in Figure 1. Baseline is the stratum corneum moisture before continuous use.

[0071] <Study Summary>

Measuring method: Skin moisture meter (Corneometer CM 825) [Courage + Khazaka

]

Measurement timing: Before continuous use, 1 week, 2 weeks, 4 weeks later (Continuous use period 4 weeks) Test article usage: After wash out period (1 week), 4 weeks in the morning with a stone moist with no moisturizing effect Apply facial lotion with no facial cleansing and moisturizing effect, then apply test product, reapply test product after lunch

Number of examinees: 29, female Statistical method: Anova

Moisturizing data results>

[Table 13]

From Fig. 1, it can be seen that the moisture content in the stratum corneum increases significantly when this product is used continuously. The powder cosmetic according to the present invention can be stably formulated with a high amount of moisturizing agent capable of giving sufficient moisture to the skin in a cosmetic containing a large amount of powder. In addition, the skin can be moisturized by continuous use while making up a matte finish.

Claims

The scope of the claims

[1] (a) A powder containing a calcined clay mineral containing 5 to 70% by mass of a calcined clay mineral and (b) 3 to 20% by mass of a humectant component having a hygroscopic property represented by the following measurement conditions A powder cosmetic comprising 60 to 95% by mass of the ingredients based on the total cosmetic.

Hygroscopic measurement conditions: 5 g of the moisturizer component is accurately weighed and placed in a 2 O m I screw tube, and the mass change rate when left at 37 ° C relative humidity 98% for 24 hours is 0.2% Above 30%.

[2] The powder cosmetic according to claim 1, wherein the calcined clay mineral is one or more selected from calcined sericin, calcined my strength and calcined talc.

[3] The humectant component (b) is glycerin, polyoxyethylene polyoxypropylene dimethyl ether, 1,3-butylene glycol, polyethylene glycol, diglycerin, dipropylene glycol, xylitol, trehalose, erythritol, hyaluron. 2. The powder cosmetic according to claim 1, wherein the powder cosmetic is one or more selected from acids and urea.

[4] A cosmetic ingredient containing a calcined clay mineral and a moisturizer is mixed with one or more selected from water and lower alcohols to form a slurry, which is heated and dried in a chamber. A method for producing a powder cosmetic, comprising: injecting the slurry to form a mis-molded shape, and then collecting and molding the mist.