JP5006590B2 - Water-containing powder cosmetic - Google Patents

Description

  The present invention relates to a cosmetic that has a powder appearance while containing a large amount of water. Furthermore, the present invention relates to a water-containing powdery cosmetic material that has good spread, spreads evenly on the skin, has a fresh feeling of use, has good makeup sustainability, and has excellent stability.

  In makeup cosmetics, dosage forms such as a solid powder type and an emulsion type are generally used. However, when such a cosmetic is mixed with a plate-like powder having a large particle size such as a pearl agent, the impact resistance is significantly deteriorated in the case of the solid powder type, and the stability is impaired in the emulsion type. was there. On the other hand, powdery cosmetics have the advantage that there are no such restrictions and various finishes can be realized.

  However, powdery makeup cosmetics have poor adhesion to the skin, resulting in problems such as a powdery finish and poor makeup persistence. In order to solve such problems, hydrated powder cosmetics have been proposed. However, it is difficult to stably obtain a powdery appearance with a large amount of water.

  Conventionally, in order to obtain a stable water-containing powdery cosmetic, a method of enclosing water phase particles with hydrophobized silicic anhydride having a very large specific surface area has been studied (Patent Document 1). However, this method has a problem that the squeaky feeling due to silicic acid having a large specific surface area is strong and the feeling of use is poor, and further, it cannot be applied uniformly on the skin.

On the other hand, as a method of stably blending a fine aqueous phase without using silicic acid having a large specific surface area, the aqueous phase is gelled and freeze-pulverized to produce a fine aqueous phase, which is then coated with a hydrophobic powder. There has also been proposed a method (Patent Document 2). However, this method has a problem that a special production machine is required. Furthermore, although the combination of an oily component and an emulsifier has been proposed (Patent Document 3), another problem that these components remaining on the skin deteriorate makeup persistence is not satisfactory. It was.
JP 2003-267826 A JP 2001-131528 A JP 2001-158716 A

  An object of the present invention is to provide a water-containing powdery cosmetic that can be easily produced, has excellent stability, spreads uniformly on the skin, and has good makeup persistence.

  The present inventors use a combination of two types of hydrophobized spherical powders having different particle diameters, which makes it easy to produce, has excellent stability, spreads evenly on the skin, and has good makeup durability. It has been found that a powder cosmetic can be obtained.

The present invention includes the following components (A), (B) and (C):
(A) Hydrophobized spherical powder having an average particle size of 0.1 μm or more and less than 1 μm,
(B) Hydrophobized spherical powder having an average particle size of 1 μm or more and 20 μm or less,
(C) A water-containing powdery cosmetic containing water is provided.

  The water-containing powdery cosmetic of the present invention can be easily produced, has excellent stability, good elongation, spreads evenly on the skin, has a fresh feeling of use, and has good finish and makeup sustainability. .

The component (A) used in the present invention is a hydrophobic powder having an average particle size of 0.1 μm or more and less than 1 μm, preferably 0.2 to 0.8 μm.
The spherical powder may be either an inorganic powder or an organic powder. Specifically, examples of the inorganic spherical powder include silica, titanium oxide, zinc oxide, aluminum oxide, calcium carbonate, zirconium oxide, and cerium oxide. Examples of the organic spherical powder include nylon, polymethyl methacrylate, organopolysiloxane elastomer, methylsiloxane network polymer, urethane resin, polystyrene, acrylonitrile-methacrylic acid copolymer, vinylidene chloride-methacrylic acid copolymer Examples thereof include coalescence, polyethylene, silk, and cellulose. Of these, silica, polymethyl methacrylate, nylon, methylsiloxane network polymer, and urethane resin are preferable, and silica and polymethyl methacrylate are particularly preferable. In addition, two or more of these powders may be combined into a spherical shape, and one or more of these may be used.

  The component (A) is a product obtained by subjecting such a spherical powder to a hydrophobic treatment, and it is possible to use a product subjected to various known hydrophobic treatments. As a method for hydrophobizing the powder, for example, fats and oils that adsorb fats and oils on the powder surface or use functional groups such as hydroxyl groups to cause esterification or etherification to make the pigments lipophilic Treatment method: Metal soap treatment method using zinc salt or magnesium salt of fatty acid; Silicone treatment method using dimethylpolysiloxane or methylhydrogen polysiloxane; Treatment method using fluorine compound having perfluoroalkyl group.

  Examples of the method of treating with a fluorine compound include perfluoroalkyl phosphate esters and salts thereof, polymers having a fluoroalkyl group, fluorine resins such as tetrafluoroethylene resin, fluoroalcohols, perfluoroepoxy compounds, sulfoamide type Fluorophosphoric acid, perfluoroalkyl sulfate, perfluoroalkyl carboxylic acid, perfluoroalkyl carboxylate, perfluoroalkyl silane (LP-1T, LP-4T, LP-8T, etc .; manufactured by Shin-Etsu Silicone), trichloro Examples of the method include treatment with a fluorine-containing halogenated hydrocarbon (fluorocarbon) such as trifluoroethane, a fluoroalkyl-containing polyhydric alcohol, a fluoroalkyl-containing polyoxyethylene compound, and a fluoroalkyl-containing sulfoamidecarboxylic acid.

In particular, as the fluorine compound for treating the powder, the following general formulas (1) and (2):
_{(C g F 2g + 1 CH} 2 CH 2 O) 2 P = O [(OH) · NH (CH 2 CH 2 OH) 2] (1)
_{[C g F 2g + 1 CH} 2 CH 2 O] P = O [(OH) · NH (CH 2 CH 2 OH) 2] 2 (2)
(In the formula, g represents an integer of 6 to 18)
The phosphate ester compound represented by can be preferably used.

Examples of the surface treatment method using a fluorine compound include surface treatment using the above fluorine compound, metal soap treatment, surface fluorination treatment using plasma, and mechanochemical composite treatment with Teflon (registered trademark).
The surface treatment amount in the fluorine compound and other hydrophobization treatments is preferably 0.1 to 50% by mass, particularly 0.5 to 20% by mass, based on the mother powder.

  One or more types of component (A) can be used, and 0.1 to 10% by mass, particularly 0.5 to 5% by mass is preferably contained in the total cosmetic composition.

The component (B) used in the present invention is a hydrophobic powder having an average particle diameter of 1 μm or more and less than 20 μm, preferably 2 to 15 μm and subjected to hydrophobic treatment.
Examples of the spherical powder of component (B) include those similar to component (A), and those that have been subjected to a hydrophobic treatment by the same method can be used.
As the component (B), silica, polymethyl methacrylate, nylon, methylsiloxane network polymer and urethane resin are preferable, and methylsiloxane network polymer and urethane resin are particularly preferable.

  One or more types of component (B) can be used, and it is preferably contained in an amount of 0.2 to 20% by mass, particularly 1 to 10% by mass, in the total cosmetic composition.

The combination of component (A) and component (B) may be the same type of powder that differs only in the average particle diameter, or a combination of different powders.
In the present invention, the mass ratio of the component (B) to the component (A) is (B) / (A) = 0.5 to 5, particularly 1 to 3, in terms of good usability and stability. From the point of view, it is preferable. Moreover, if it exists in this range, there will be no squeaky feeling and it will be easy to spread uniformly on skin.

  Furthermore, in the present invention, the ratio (A) / (B) of the average particle diameter of the component (A) and the component (B) is 0.02 to 0.3, which holds water between the powders. Since it becomes easy, it is preferable. In addition, when using 2 or more types of a component (A) and / or a component (B), a mass ratio of each powder (2 or more types) in each of a component (A) and a component (B) is multiplied by an average particle diameter, The added value is obtained as the average particle diameter of each of the component (A) and the component (B).

  In this invention, component (C) water is contained. Water is preferably contained in the total composition of the cosmetic in an amount of 5 to 90% by mass, particularly 10 to 70% by mass.

In the present invention, the mass ratio of the component (C) to the total content of the component (A) and the component (B) is preferably (C) / ((A) + (B)) ≦ 15. .
In the present invention, by combining the component (A) and the component (B), the water phase particles refined during mixing are arranged so as to be surrounded by these two kinds of spherical powders, and the appearance is powdery. Nevertheless, it is possible to easily obtain a cosmetic that can contain a large amount of water.

Furthermore, the water-containing powdery cosmetic of the present invention can contain (D) a plate-like powder subjected to a hydrophobization treatment having an average particle diameter of 20 μm to 1 mm, preferably 25 to 150 μm. These plate-like powders are preferable because they further stabilize the powder surrounding the water droplets and improve the feeling of use.
The plate-like powder refers to a flat shape having an aspect ratio (long side / thickness) of 10 or more, and the planar shape may be any of a circular shape, a rectangular shape, an indefinite shape, and the like. The hydrophobizing treatment can be performed in the same manner as the component (A).

Specific examples of the plate powder include natural materials such as silicic acid, magnesium silicate, silica, talc, sericite, kaolin, mica, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, mica, glass, etc. Or organic powders, such as synthetic inorganic powder, N-mono long chain acyl basic amino acid, and zinc monoalkyl phosphate.
Moreover, the composite powder which coat | covered the metal oxides, such as titanium dioxide, iron oxide, and anhydrous silicic acid, on the said plate-shaped powder surface can also be used. Specific examples of the composite powder include titanium oxide-coated mica, iron oxide-coated mica, Bengala-coated mica titanium, and titanium oxide-coated glass powder.

  One or more types of component (D) can be used, and it is preferable to contain 1 to 40% by mass, particularly 5 to 30% by mass in the total cosmetic composition.

  In the present invention, the average particle size of each powder is determined by measuring the particle size distribution by a laser diffraction / scattering method. The particle size distribution is measured at a ratio of 10 parts by mass of powder to 100 parts by mass of ethanol, and the resulting dispersion is measured using a particle size distribution analyzer (LA-920, manufactured by Horiba, Ltd.).

The water-containing powdery cosmetic of the present invention can further contain (E) a water-soluble polymer. Such a water-soluble polymer is not particularly limited as long as it is used in cosmetics, and examples thereof include natural water-soluble polymers, semi-synthetic water-soluble polymers, and synthetic water-soluble polymers.
Examples of the natural water-soluble polymer include gum arabic, gum tragacanth, galactan, guar gum, locust bin gum, carob gum, caraya gum, carrageenan, pectin, mannan, agar, quince seed (malmello), alge colloid (gum extract), starch (rice, rice, Plant-based water-soluble polymers such as corn, potato and wheat); microbial-based water-soluble polymers such as xanthan gum, hyaluronic acid, dextran, succinoglucan, curdlan and pullulan; animal systems such as collagen, casein, albumin and gelatin And water-soluble polymers.

  Examples of semi-synthetic water-soluble polymers include acetylated hyaluronic acid; starch-based water-soluble polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, and cellulose sulfate. Cellulose water-soluble polymers such as sodium, hydroxypropylcellulose, sodium carboxymethylcellulose (CMC), crystalline cellulose and cellulose powder; and alginic acid-based water-soluble polymers such as sodium alginate and propylene glycol alginate.

Synthetic water-soluble polymers include, for example, vinyl-based water-soluble polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, and carboxyvinyl polymer (trade name “Carbopol”); polyethylene glycol (molecular weight 20,000 to 4,000,000, etc.), etc. Water-soluble polyoxyethylene polymers; water-soluble copolymers such as polyoxyethylene polyoxypropylene copolymers; water-soluble acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide; polyethylene Examples thereof include imines and cationic polymers.
As the water-soluble polymer, agar, gelatin and xanthan gum are preferable, and agar is particularly preferable.

One or more types of component (E) can be used, and 0.1 to 40% by weight, particularly 1 to 10% by weight, is contained in the total cosmetic composition from the viewpoint of improving stability and makeup sustainability. preferable.
When the water-soluble polymer is dissolved in the aqueous phase, the aqueous phase is thickened and the structure composed of powder and water is stabilized. Furthermore, a film is formed on the skin, and the adhesiveness of the powder to the skin is increased, and the makeup sustainability can be further improved.

The water-containing powdery cosmetic of the present invention can further contain a moisturizing agent. Examples of the humectant include 1,3-butylene glycol, dipropylene glycol, ethylene glycol, glycerin, diglycerin and the like.
One or more kinds of these humectants can be used, and it is preferably contained in an amount of 0.1 to 20% by mass, particularly 1 to 15% by mass in the total cosmetic composition.

The water-containing powdery cosmetic of the present invention can further contain a surfactant. The surfactant is not particularly limited as long as it is used in cosmetics, and can include a cationic surfactant, an anionic surfactant, and a nonionic surfactant.
As the surfactant, a nonionic surfactant is preferable, for example, monoglyceride, sorbitan fatty acid ester, sucrose fatty acid ester, polyglycerin fatty acid ester, alkanolamide, amine oxide, polyoxyethylene alkyl ether, polyethylene glycol fatty acid ester, poly Oxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin mono fatty acid ester, polyoxyethylene propylene glycol mono fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene fatty acid amide, polyoxyethylene alkylamine, alkyl saccharide, α-monoalkyl glyceryl Examples include ether, dimethylpolysiloxane / polyoxyalkylene copolymer, and the like.
One or more kinds of these surfactants can be used, and 0.1 to 10% by mass, particularly 0.2 to 5% by mass is preferably contained in the total cosmetic composition.

The water-containing powdery cosmetic of the present invention can further contain an oily component. The oil component is not particularly limited as long as it is usually used in cosmetics. For example, methylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, olive oil, jojoba oil, castor oil, squalane, liquid paraffin, ester Liquid oils such as oil, diglyceride, triglyceride, fluorine-based oils; solid or semi-solid oils such as petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids, higher alcohols and the like.
One or more of these oily components can be used, and 0.1 to 10% by mass, particularly 0.2 to 5% by mass is preferably contained in the total cosmetic composition.

  Furthermore, the water-containing powdery cosmetics of the present invention include antioxidants, preservatives, ultraviolet absorbers / scattering agents, inorganic salts or organic acid salts, chelating agents, emulsion stabilizers, pH adjusters, fragrances, various extracts, drugs, etc. Can be contained appropriately.

  The water-containing powdery cosmetic composition of the present invention can be produced, for example, by first mixing an aqueous component containing water and then slowly dropping the previous aqueous component while mixing all other components uniformly. it can. A Henschel mixer, a disper mixer, etc. can be used for mixing.

  The water-containing powdery cosmetic material of the present invention is a powdery cosmetic material that is not press-molded, and is filled into a container such as a dish shape, a cylindrical shape, or a compact shape, and is used by using a mat, a puff, or the like as a prop. However, it may be used by interposing a mesh or some holed plugs on the surface of the powder cosmetic. Moreover, the mats and puffs of props can be ones with long hairs or ones with a handle depending on the shape of the container.

  The water-containing powdery cosmetic of the present invention can be applied as a foundation, white powder, blusher, eye shadow, deodorant powder, body powder, perfume powder, baby powder, etc., among them, such as foundation, white powder, blusher, eye shadow, etc. Suitable as a makeup cosmetic.

Examples 1-8, Comparative Examples 1-3
Manufacture water-containing powdery cosmetics (eye shadows) with the composition shown in Tables 1 and 2 and have appearance, feeling of use (goodness of spread), stability, finish (goodness, uniformity, color development) and makeup sustainability. evaluated. The results are shown in Table 3.
In the powders used in the examples, “fluorine treatment” represents 5 mass% perfluoroalkyl phosphate diethanolamine salt treatment, and “silicon treatment” represents 2 mass% dimethylpolysiloxane treatment. Further, Example 8 is a reference example and is not included in the scope of the present invention.

(Production method)
An aqueous component containing water is uniformly mixed and dissolved. Using a Henschel mixer, all other components are mixed uniformly, and the aqueous component is slowly added dropwise thereto. When the dropping was completed, the stirring was stopped to obtain a water-containing powdery cosmetic (eye shadow).

(Evaluation method)
(1) Appearance:
A professional evaluator observed the properties and evaluated whether the powder was completely powdered (powdered) or whether the powder was partially agglomerated and pasted (pasted).
5: Complete powder form.
4: Slightly sticky and agglomerated parts can be seen, but the whole is powdery.
3: A part aggregated is seen.
2: The part which agglomerated and became paste-like is seen in part.
1: Complete paste.

(2) Feeling of use (goodness of spread):
Ten professional panelists used each eye shadow, and evaluated “goodness of elongation” in the following five stages, and the average score was used as the usability score.
5: Very good elongation and easy to spread.
4: There is a slight resistance to spreading.
3: Although there is a sense of resistance to spreading, it can be extended somehow.
2: Slightly squeaky, although slightly stretched.
1: The elongation is bad and a strong squeaky feeling is felt.

(3) Stability:
The number of hours the powder was maintained when it was vibrated 240 times per minute with an amplitude of 4 cm was evaluated according to the following five levels.
5: No change over 40 hours.
4: No change from 20 hours to less than 40 hours.
3: No change from 10 hours to less than 20 hours.
2: No change from 5 hours to less than 10 hours.
1: Paste in less than 5 hours.

(4) Finish (goodness, uniformity, color development):
Ten professional panelists used each eye shadow, and the finish (goodness, uniformity, color development) was evaluated in the following five stages, and the average score of each person was used as the finish score.
5: Uniform and glossy, beautiful gradation can be obtained.
4: An almost uniform and glossy finish. Some gradation is also obtained.
3: There is unevenness and there is no gloss.
2: Uneven coating is conspicuous, rather it is a matte finish.
1: Most of the surface is uneven and has a fairly matte finish.

(5) Makeup durability:
Ten professional panelists used each eye shadow, and evaluated the makeup holding in five levels as follows, and the average of their scores was used as the makeup sustainability score.
5: Almost no collapse such as fading or dullness even after 5 hours.
4: There is no color fading at 3 hours, but color fading is seen after 5 hours.
There is no color fading at 3: 1 hour, but color fading is seen after 3 hours.
2: There is no color fading within 30 minutes, but color fading is seen after 1 hour.
The applied color becomes light within 1:30 minutes, or the double wrinkles are observed.

Claims (5)

The following components (A), (B) and (C):
(A) Hydrophobized spherical powder having an average particle size of 0.1 μm or more and less than 1 μm, 0.1 to 10% by mass ,
(B) Hydrophobized spherical powder having an average particle size of 1 μm to 20 μm, 0.2 to 20% by mass ,
(C) Water 10-70 mass%
The ratio of the average particle diameter of the component (A) and the component (B) ((A) / (B)) is 0.02 to 0.3, and the component (A) and the component (B) A hydrous powdery cosmetic in which the mass ratio of the component (C) to the total content is (C) / ((A) + (B)) ≦ 15.   The water-containing powdery cosmetic according to claim 1, wherein the mass ratio of the component (B) to the component (A) is (B) / (A) = 0.5-5.   The hydrous powdery cosmetic according to any one of claims 1 and 2, further comprising (D) a hydrophobized plate-like powder having an average particle size of 20 µm to 1 mm.   The water-containing powdery cosmetic according to any one of claims 1 to 3, further comprising (E) a water-soluble polymer.   The water-containing powdery cosmetic according to any one of claims 1 to 4, wherein the component (A) and the component (B) are spherical powders treated with a fluorine compound having a perfluoroalkyl group.