WO2021250742A1 - Produit cosmétique pour cils - Google Patents

Produit cosmétique pour cils Download PDF

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Publication number
WO2021250742A1
WO2021250742A1 PCT/JP2020/022536 JP2020022536W WO2021250742A1 WO 2021250742 A1 WO2021250742 A1 WO 2021250742A1 JP 2020022536 W JP2020022536 W JP 2020022536W WO 2021250742 A1 WO2021250742 A1 WO 2021250742A1
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experimental example
eyelash
eyelash cosmetics
carbon
effect
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PCT/JP2020/022536
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English (en)
Japanese (ja)
Inventor
正也 野原
三佳誉 岩田
博章 田口
浩伸 蓑輪
武志 小松
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日本電信電話株式会社
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Priority to JP2022530367A priority Critical patent/JP7368782B2/ja
Priority to PCT/JP2020/022536 priority patent/WO2021250742A1/fr
Publication of WO2021250742A1 publication Critical patent/WO2021250742A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara

Definitions

  • the present invention relates to cosmetics for eyelashes.
  • Eyelash cosmetics have cosmetic effects such as curling the eyelashes upward (curl keeping), making the eyelashes look longer (long rush), and making the eyelashes thicker (volume up) to make the eyes clearer. It has. Eyelash cosmetics contain various components in order to impart adhesiveness and volume, and to adjust the drying speed (see Patent Documents 1 and 2).
  • Black iron oxide produced from minerals is said to be a natural material, but because black iron oxide has a large particle size and poor dispersibility, a large amount of black iron oxide is used as a cosmetic for eyelashes in order to develop color. Need to be added to. Therefore, the amount of ingredients other than pigments for obtaining curl-keeping effect, long rush effect, volume-up effect, smooth usability (applying comfort), and adhesiveness (makeup retention) is reduced, and these effects can be obtained. There is a problem that it is difficult.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a cosmetic for eyelashes using a material having a low environmental load and high dispersibility as a pigment.
  • One aspect of the present invention is a cosmetic for eyelashes, which comprises co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched as a pigment, and the co-continuous fibrous carbon is produced from cellulose nanofibers. ..
  • One aspect of the present invention is a cosmetic for eyebrows, which comprises rod-shaped carbon obtained by crushing co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched, and the co-continuous fibrous carbon is cellulose. Made from nanofibers.
  • the present invention it is possible to provide a cosmetic for eyelashes using a material having a low environmental load and high dispersibility as a pigment.
  • 3 is an SEM image of the co-continuous fibrous carbon of the first embodiment.
  • FIG. 1 is a flowchart showing a method for producing co-continuous fibrous carbon according to the first embodiment.
  • the co-continuous fibrous carbon is used as a pigment for the eyelash cosmetics (mascara) of the present embodiment.
  • the illustrated method for producing co-continuous fibrous carbon includes a dispersion step (step S1), a freezing step (step S2), a drying step (step S3), and a carbonization step (step S4).
  • This production method requires a cellulose nanofiber dispersion.
  • the raw material is not particularly limited.
  • Cellulose nanofibers include, for example, wood-derived, pulp-derived, crustacean-derived, bacterial-derived, food-derived, plant-derived, and other biological-derived.
  • any one of these cellulose nanofibers may be used, or two or more kinds of these may be selected and mixed with the cellulose nanofibers.
  • such a material having a low environmental load is used as a pigment.
  • the form of the cellulose nanofibers in the cellulose nanofiber dispersion liquid is preferably a dispersed form. Therefore, the manufacturing process shown in FIG. 1 includes a dispersion step (step S1), but the dispersion step (step S1) may not be included. That is, when the cellulose nanofiber dispersion liquid in which the cellulose nanofibers are dispersed is used, the step is not necessary.
  • the dispersion step disperses the cellulose nanofibers contained in the cellulose nanofiber dispersion liquid.
  • the dispersion medium may be an aqueous system such as water (HO), carboxylic acid, methanol (CH 3 OH), ethanol (C 2 H 5 OH), propanol (C 3 H 7 OH), n-butanol, isobutanol, n.
  • -At least one selected from the group consisting of organic systems such as butylamine, dodecane, unsaturated fatty acids, ethylene glycol, heptan, hexadecane, isoamyl alcohol, octanol, isopropanol, acetone and glycerin can be used.
  • a homogenizer for example, a homogenizer, an ultrasonic cleaner, an ultrasonic homogenizer, a magnetic stirrer, a stirrer, a shaker, or the like may be used.
  • the solid content concentration of the cellulose nanofibers in the cellulose nanofiber dispersion liquid is preferably 0.001 to 80% by mass, more preferably 0.01 to 30% by mass. This is because if the solid content concentration is too low, a network of cellulose nanofibers cannot be formed, and it becomes difficult to form a co-continuous structure of carbon in the carbonization step (step S4) described later. Further, if the solid content concentration is too high, it aggregates in the freezing step (step S2) described later, and further, in the carbonization step (step S4), the sintering of cellulose proceeds to form a fibrous structure. This is because it becomes difficult.
  • a dispersion containing cellulose nanofibers is frozen to obtain a frozen product (step S2).
  • the cellulose nanofiber dispersion liquid is housed in a suitable container such as a test tube, and the surroundings of the test tube are cooled in a cooling material such as liquid nitrogen, so that the cellulose nanofibers housed in the test tube are stored. Is done by freezing.
  • the method of freezing is not particularly limited as long as the dispersion medium of the dispersion liquid can be cooled below the freezing point, and may be cooled in a freezer or the like.
  • the dispersion medium loses its fluidity, the cellulose nanofibers which are the dispersoids are fixed, and a three-dimensional network structure is constructed.
  • the frozen body frozen in the freezing step is dried in a vacuum to obtain a dried body (step S3).
  • This step sublimates the frozen dispersion medium from the solid state.
  • the obtained frozen product is placed in a suitable container such as a flask, and the inside of the container is evacuated.
  • the sublimation point of the dispersion medium is lowered, and it is possible to sublimate even a substance that does not sublimate under normal pressure.
  • the degree of vacuum in the drying step varies depending on the dispersion medium used, but is not particularly limited as long as the degree of vacuum is such that the dispersion medium sublimates.
  • the degree of vacuum is preferably 1.0 ⁇ 10 -6 Pa to 1.0 ⁇ 10 -2 Pa. Further, heat may be applied using a heater or the like at the time of drying.
  • the dried body dried in the drying step is heated and carbonized in an atmosphere that does not burn to obtain co-continuous fibrous carbon (step S4).
  • the cellulose nanofibers may be carbonized by firing at 100 ° C. to 2000 ° C., preferably 150 ° C. to 1300 ° C. in an inert gas atmosphere.
  • co-continuous fibrous carbon it is possible to change the color of co-continuous fibrous carbon by adjusting the progress of carbonization, and it turns brown at 150 ° C to 400 ° C and black at temperatures higher than 400 ° C. That is, the co-continuous fibrous carbon has a color according to the progress of carbonization.
  • the degree of carbonization is adjusted by the firing temperature, firing time, and the like. Specifically, in the case of co-continuous fibrous carbon obtained by calcining the dried product at 150 ° C. to 400 ° C., brown eyelash cosmetics are applied to the eyelashes. Further, in the case of co-continuous fibrous carbon obtained by calcining the dried product at a temperature higher than 400 ° C., black eyelash cosmetics are applied to the eyelashes.
  • the lightness or saturation can be adjusted from light brown to dark brown.
  • the progress of carbonization of the co-continuous fibrous carbon is adjusted without preparing pigments of a plurality of colors, respectively, so that various shades of brown or black can be used. It is possible to realize a cosmetic for eyebrows.
  • the gas that does not burn cellulose may be, for example, an inert gas such as nitrogen gas or argon gas. Further, the gas on which cellulose does not burn may be a reducing gas such as hydrogen gas or carbon monoxide gas, or may be carbon dioxide gas. Nitrogen gas is more preferable from the viewpoint of cost.
  • FIG. 2 is an SEM (Scanning Electron Microscope) image of co-continuous fibrous carbon produced by the manufacturing method of the present embodiment. The magnification is 10000 times. From the image, it can be seen that the three-dimensional network structure is being constructed.
  • the co-continuous fibrous carbon of the present embodiment is a naturally derived raw material unlike carbon black, carbon nanotubes, fullerenes, graphene, and graphite synthesized from fossil fuels, and has a low burden on the environment. ..
  • fibrous carbon is branched and has a co-continuous three-dimensional network structure. Therefore, even when this co-continuous fibrous carbon is added to eyelash cosmetics as a black pigment, the branched structure suppresses the formation of bundles (aggregates) of fibers, and the fibrous carbon is made uniform. It becomes possible to disperse to.
  • the fiber diameter of the co-continuous fibrous carbon is too small, the branched structure is fragile and aggregates during storage of the eyelash cosmetics. Further, if the fiber diameter is too large, the dispersibility is lowered when the eyelash cosmetic is used, and sufficient color development performance cannot be obtained. Therefore, the fiber diameter is preferably 10 nm to 200 nm.
  • the fiber length of the co-continuous fibrous carbon is preferably 300 nm to 2 ⁇ m.
  • the fiber length described in this embodiment is the average value of the lengths measured by SEM observation of co-continuous fibrous carbon and tracing from one branch to the next (between adjacent branches). Define. The number of measurement points is 500 or more.
  • the cellulose nanofibers used preferably have a fiber diameter of 20 nm to 400 nm and a fiber length of 500 nm to 4 ⁇ m. Is.
  • cellulose nanofibers are carbonized in the carbonization step (step 4), and the fibers become thinner and shorter than before carbonization due to decomposition, combustion, activation, and the like.
  • the fibers aggregate in the freezing step (step S2), and a dried cellulose nanofiber having a large fiber diameter can be obtained in the subsequent drying step (step S3). .. Therefore, when cellulose nanofibers having a fiber diameter smaller than 20 nm are used, the fiber diameter of the obtained co-continuous fibrous carbon becomes larger than 200 nm.
  • Eyelash cosmetics include pigments, waxes, liquid oils, coating agents and thickeners.
  • the pigment contains co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched.
  • FIG. 3 is a flowchart showing a method for manufacturing eyelash cosmetics according to the present embodiment.
  • the illustrated manufacturing method further includes a pulverization step (step S5) and a mixing step (step S6) in the manufacturing method (steps S1-S4) shown in FIG. That is, in the eyelash cosmetics of the present embodiment, the steps of steps S5-S6 are added to the co-continuous fibrous carbon produced in steps S1-S4. Since steps S1 to S4 are the same as the manufacturing method of FIG. 1, description thereof will be omitted here.
  • the co-continuous fibrous carbon carbonized in the above-mentioned carbonization step is crushed (step S5).
  • the crushing process uses, for example, a mixer, a homogenizer, an ultrasonic homogenizer, a high-speed rotary shear type stirrer, a colloidal mill, a roll mill, a high-pressure injection disperser, a rotary ball mill, a vibration ball mill, a planetary ball mill, an attritor, etc. Make continuous fibrous carbon into powder or slurry.
  • the co-continuous fibrous carbon preferably has a secondary particle diameter of 10 nm to 1 mm, more preferably 1 ⁇ m to 50 ⁇ m. This is because when the secondary particle size is crushed to a size smaller than 10 nm, the co-continuous structure is broken and the eyelash cosmetics are aggregated during storage.
  • the fibrous carbon does not form a bundle, but the co-continuous fibrous carbon that functions as a pigment is not sufficiently dispersed, which causes coating spots. ..
  • the co-continuous fibrous carbon has a high porosity and a low density, when the co-continuous fibrous carbon is crushed alone, the powder of the co-continuous fibrous carbon flies during or after crushing, which makes it difficult to handle. be. Therefore, a wet pulverization method in which co-continuous fibrous carbon is impregnated with a solvent and then pulverized is preferable.
  • the solvent used in the wet state is not particularly limited, but is not particularly limited, for example, 3-methyl-3-methoxybutyl ether, 3-methyl-3--methoxybutanol, n-butanol, n-butylamine, n-methylpyrrolidone, acetone, isoamyl alcohol, iso.
  • step S6 it is also possible to use the components of the eyelash cosmetics used in step S6 as the solvent used here. In this case, since the eyelash cosmetics do not contain an unnecessary solvent, it is preferable to use the components of the eyelash cosmetics as the solvent used in the pulverization step.
  • step S5 the material (co-continuous fibrous carbon) crushed in the crushing step (step S5) is mixed with the wax, liquid oil, coating agent, and thickener used for the eyelash cosmetics to prepare the eyelash cosmetics. Obtain (step S6).
  • the wax used in this embodiment is not particularly limited. , Hard lanolin, lanolin, vaseline, hardened castor oil, polyoxyethylene cholesterol ether, polyoxyethylene hydrogenated lanolin alcohol ether, polyoxyethylene lanolin alcohol ether, paraffin wax, bead wax, microcrystallin wax, jojobaroester, polyoxy It contains at least one selected from the group consisting of ethylene lanolin alcohol ether, hexyl laurate, lanolin fatty acid isopropyl, lanolin fatty acid polyethylene glycol, fatty acid glyceride, and alkyl silicone.
  • the amount of wax added to the eyelash cosmetics is appropriately adjusted, but is preferably 1 to 30% by mass, more preferably 5 to 25% by mass.
  • the amount added is less than 1% by mass, it may not always be sufficient in terms of curl keeping effect, long rush effect, volume increasing effect, adhesive strength (makeup retention), etc. On the other hand, if the addition amount exceeds 30% by mass, the makeup lasts poorly. Further, it becomes sticky and has a high viscosity, which makes it difficult to apply.
  • the liquid oil content used in this embodiment is not particularly limited, and is, for example, hydrocarbon oils such as heavy isoparaffin, squalane, and liquid paraffin, cetyl-2-ethylhexanoate, 2-ethylhexyl palmitate, and 2-octyldodecylmili.
  • Esters such as State, Neopentyl Glycol-2-ethylhexanoate, Isopropyl Millistate, Myristyl Millistate, Olive Oil, Avocado Oil, Johova Oil, Sunflower Oil, Saflower Oil, Camellia Oil, Macademia Nut Oil, Mink Oil, Oils and fats such as liquid lanolin, lanolin acetate, and castor oil, dimethylpolysiloxane, methylphenylpolysiloxane, gum-like dimethylpolysiloxane with high degree of polymerization, polyether-modified silicone, silicone-based oils such as amino-modified silicone, and fluorine-modified dimethyl. It contains at least one selected from the group consisting of fluorine-based oils such as polysiloxane, fluorine-modified methylphenylpolysiloxane, perfluoropolyether, and perfluorocarbon.
  • the amount of the liquid oil added to the eyelash cosmetics is appropriately adjusted, but is preferably 0.1 to 20% by mass, and more preferably 1 to 10% by mass.
  • the addition amount is less than 0.1% by mass, it may not always be sufficient in terms of elongation (coating comfort) during coating. On the other hand, if the addition amount exceeds 20% by mass, the makeup lasts poorly.
  • the coating agent used in the present embodiment is not particularly limited, and is, for example, cellulose derivatives such as alkyl cellulose, dextrin, and nitrocellulose, latexes such as alkyl polyacrylate, polyvinyl acetate, polyvinyl alcohol, and polyvinylpyrrolidone, and trimethylsiloxy.
  • Silicone resins such as silicic acid, trimethylsiloxysilylpropylcarbamide acid, acrylic silicone copolymer resin, fluorine-modified silicone, fluororesin, aromatic hydrocarbon resin, polymer emulsion resin, terpene resin, polybutene, polyisoprene, alkyd It contains at least one selected from the group consisting of resins, polyvinylpyrrolidone-modified polymers, rosin-modified resins, and polyurethanes.
  • the amount of the coating agent added to the eyelash cosmetics is appropriately adjusted, but is preferably 1 to 25% by mass, more preferably 2 to 20% by mass. If the amount added is less than 1% by mass, the curl-up effect is reduced and the makeup lasts poorly. On the other hand, if the addition amount exceeds 25% by mass, it becomes difficult to apply.
  • the thickener used in the present embodiment is not particularly limited, and includes, for example, at least one selected from the group consisting of dextrin fatty acid ester, bentonite, xanthan gum, and cellulose gum.
  • the amount of the thickener added to the eyelash cosmetics is appropriately adjusted, but is preferably 0.1 to 30% by mass, and more preferably 1 to 20% by mass. If the addition amount is less than 0.1% by mass, it may be difficult to adjust the viscosity to a sufficient level. On the other hand, if the addition amount exceeds 30% by mass, the viscosity becomes too high and it becomes difficult to apply.
  • an ingredient usually added to eyelash cosmetics may be added as long as the effect of the present embodiment is not impaired.
  • examples of such components include synthetic fibers, alcohols, polyhydric alcohols, chemicals, surfactants, water-soluble polymers, clay minerals, powders, preservatives, fragrances, antioxidants, ultraviolet absorbers, and moisturizers.
  • examples thereof include oily components such as agents, water, oils and fats, and hydrocarbon oils.
  • the mixing step uses, for example, a mixer, a homogenizer, an ultrasonic homogenizer, a high-speed rotary shear type stirrer, a colloid mill, a roll mill, a high-pressure injection disperser, a rotary ball mill, a vibration ball mill, a planetary ball mill, an attritor, a kneader, and the like. be able to.
  • the manufacturing method of this embodiment does not have to include all the steps shown in FIG. For example, by simultaneously adding wax, liquid oil, a film agent, and a thickener together with co-continuous fibrous carbon during the pulverization step, pulverization and mixing can be performed at the same time. In this case, the mixing step is performed. It does not have to be.
  • Curl-keeping effect evaluation panel We asked 10 people to apply eyelash cosmetics to the eyelashes, visually observe whether the eyelashes curled upward, and answered whether they had the curl-keeping effect. received. The number of people who answered that they had a curl-keeping effect was used to evaluate according to the following criteria. ⁇ : 7 or more people answered that there is a curl-keeping effect ⁇ : 5-6 people answered that there is a curl-keeping effect ⁇ : 3-4 people answered that there is a curl-keeping effect ⁇ : There is a curl-keeping effect 2 or less people answered
  • volume-up effect evaluation panel We asked 10 people to apply eyelash cosmetics to the eyelashes, visually observe whether the eyelashes became thicker, and answer whether they had the volume-up effect. .. The number of people who answered that there was a volume-up effect was used to evaluate according to the following criteria. ⁇ : 7 or more people answered that there is a volume-up effect ⁇ : 5-6 people answered that there is a volume-up effect ⁇ : 3-4 people answered that there is a volume-up effect ⁇ : There is a volume-up effect 2 or less people answered
  • Makeup retention evaluation panel We asked 10 people to apply eyelash cosmetics to the eyelashes, and visually observed whether the adhesive strength was maintained even after one day's life, and whether the makeup retention was good. I asked you to answer. The number of people who answered that they had good makeup was evaluated according to the following criteria. ⁇ : 7 or more people answered that they had good makeup ⁇ : 5-6 people answered that they had good makeup ⁇ : 3-4 people answered that they had good makeup ⁇ : Good makeup 2 or less people answered
  • Experimental Example 1 is an oil-in-water type eyelash cosmetic containing co-continuous fibrous carbon as a pigment.
  • the eyelash cosmetics of Experimental Example 1 were produced by the following procedure.
  • the cellulose nanofiber dispersion was completely frozen by freezing the above test tube in a freezer at -30 ° C for 2 hours. After completely freezing the cellulose nanofiber dispersion, take out the frozen cellulose nanofiber dispersion on a planet and dry it in a vacuum of 10 Pa or less with a freeze dryer (manufactured by Tokyo Science Instruments Co., Ltd.) for 24 hours. A dried product of cellulose nanofibers was obtained. After drying in a vacuum, the cellulose nanofibers were carbonized by firing at 600 ° C. for 2 hours in a nitrogen atmosphere, whereby the co-continuous fibrous carbon of Experimental Example 1 was produced. When the co-continuous fibrous carbon produced in this experimental example was observed by SEM, it was confirmed that the average fiber diameter was 20 nm and the average fiber length was 500 nm.
  • Methyl acid acid and D-pantothenyl alcohol were used.
  • glycerin monostearate, natural vitamin E, beeswax bleached wax, carnauba wax, and candelilla resin manufactured by Japan Natural Products Co., Ltd.
  • a (Acrylate / ethylhexyl acrylate) copolymer (manufactured by Daito Kasei Kogyo Co., Ltd.) was used for the D phase, phenoxyethanol was used for the E phase, and nylon fiber (manufactured by Cosmetics Terials) with a length of 2 mm was used for the F phase.
  • the components of the oil-in-water type eyelash cosmetics having the composition shown in FIG. 4 were adjusted according to the following manufacturing procedure.
  • the B-phase mixture shown in FIG. 4 was heated to 85 ° C.
  • the C-phase mixture was heated to 95 ° C.
  • the heated B-phase and C-phase and A-phase were stirred with a homogenizer for 2 hours while maintaining 85 ° C.
  • Phase B and C phases were emulsified, and phase A was pulverized and dispersed.
  • the resulting mixture was cooled to 60 ° C. with stirring, the D, E and F phase components were added and mixed in a homogenizer for 2 hours.
  • the homogeneous mixture was cooled to 32 ° C. in the air to obtain an oil-in-water type eyelash cosmetic.
  • Comparative Example 1 is an eyelash cosmetic in which the co-continuous fibrous carbon (pigment) of the eyelash cosmetic of Experimental Example 1 is replaced with the conventionally used black iron oxide (spherical, average particle size 2 ⁇ m).
  • black iron oxide was used for the A phase in the production procedure of Experimental Example 1, and other eyelash cosmetics were prepared in the same manner as in Experimental Example 1.
  • FIG. 4 shows the evaluation results of Experimental Example 1 evaluated by the above evaluation method.
  • Experimental Example 1 in FIG. 4 the eyelash cosmetics of Experimental Example 1 were compared in all evaluations of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. It was superior to Example 1.
  • the eyelash cosmetics using the co-continuous fibrous carbon of the present embodiment as a pigment have a significantly superior curl-keeping effect and long rush as compared with the eyelash cosmetics containing black iron oxide. It can be said that it exerts an effect, a volume-up effect, a feeling of application, a long-lasting makeup, and stability over time.
  • Experimental Example 2 is a cosmetic for eyelashes prepared by the production method of Experimental Example 1 in which the blending amount of the co-continuous fibrous carbon is 5% by mass.
  • the blending amount of the B phase to the F phase is the same as that of Experimental Example 1. Therefore, in Experimental Example 2, the blending amount of purified water was increased by 20% by mass as compared with Experimental Example 1.
  • the eyelash cosmetics of this experimental example were prepared by the same production method as in experimental example 1.
  • FIG. 4 shows the evaluation results of Experimental Example 2 evaluated by the above evaluation method.
  • Experimental Example 2 in FIG. 4 the eyelash cosmetics of Experimental Example 2 are compared with Comparative Example 1 in all evaluations of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. Was better. Further, it can be seen that Experimental Example 2 is more comfortable to apply than Experimental Example 1. It is considered that this is because the proportion of co-continuous fibrous carbon contained in the eyelash cosmetics decreased, the viscosity decreased, and the eyelash cosmetics spread better at the time of application.
  • the blending amount of the co-continuous fibrous carbon is preferably 5% by mass or less of the eyelash cosmetics.
  • the blending amount of co-continuous fibrous carbon was less than 0.5% by mass and the same as in Experimental Example 2 except for purified water, sufficient black color could not be obtained, and eyelash makeup. could not be used as a fee.
  • Sufficient black in this case means that a 5 cm line is overlaid on the back of the hand three times using a brush for eyelash cosmetics, and the black line is not interrupted by 2 cm or more.
  • Experimental Example 3 is an eyelash cosmetic produced from the eyelash cosmetic of Experimental Example 2 without including F-phase nylon fiber.
  • the blending amount of the A phase to the E phase is the same as that of Experimental Example 2. Therefore, in Experimental Example 3, the blending amount of purified water was increased by 2% by mass as compared with Experimental Example 2.
  • the eyelash cosmetics of this experimental example were prepared by the same production method as in experimental example 1.
  • FIG. 4 shows the evaluation results of Experimental Example 3 evaluated by the above evaluation method. From the results of FIG. 4, Experimental Example 3 was superior to Comparative Example 1 in the evaluation of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. Further, Experimental Example 3 is evaluated as having a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a long-lasting makeup as compared with Experimental Example 2.
  • Example 4 In Experimental Example 4, the amount of components (phases B to E other than purified water) that affect the curl-keeping effect, long lash effect, volume-up effect, application comfort, makeup retention, and stability over time of Experimental Example 3 is used. Increased eyelash cosmetics.
  • a cosmetic for eyelashes was prepared by the same production method as in Experimental Example 1 using the composition and the blending amount shown in FIG. Specifically, in this experimental example, the difference in weight (7% by mass) between the A phase (co-continuous fibrous carbon) and the F phase (nylon fiber) of Experimental Example 1 and Experimental Example 3 is shown in Experimental Example 1.
  • the fibers were allocated to phases B to E other than purified water so as to have the same blending ratio as that of Experimental Example 1, and the total weight other than purified water was adjusted to be the same as that of Experimental Example 1.
  • the total of the components other than the purified water of Experimental Example 4 does not match the total of the components other than the purified water of Experimental Example 1, but this is the difference due to rounding off to the third decimal place. Is.
  • FIG. 4 shows the evaluation results of Experimental Example 4 evaluated by the above evaluation method. From the results shown in FIG. 4, Experimental Example 4 was superior to Comparative Example 1 in the evaluation of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. In addition, Experimental Example 4 had better makeup retention than Experimental Example 1-3. This is due to the increase in the amount of ingredients (phases B to E other than purified water) that affect the curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. ..
  • the amount of the A-phase pigment added can be reduced, and instead of adding the F-phase nylon fiber, others can be used. Since the amount of the component added can be increased, such excellent performance can be realized.
  • Comparative Example 2 is a cosmetic for eyelashes in which the co-continuous fibrous carbon of Experimental Example 4 is replaced with conventionally used black iron oxide (spherical, average particle size 2 ⁇ m). Specifically, in Comparative Example 2, black iron oxide was used for the A phase of Experimental Example 4, and other eyelash cosmetics were prepared in the same manner as in Experimental Example 4.
  • Comparative Example 2 since black iron oxide is used as a pigment, dispersibility is poor, and when the blending amount is 5% by mass or less, sufficient black color cannot be obtained and it cannot be used as a cosmetic for eyelashes. rice field. Sufficient black in this case means that a 5 cm line is overlaid on the back of the hand three times using a brush for eyelash cosmetics, and the black line is not interrupted by 2 cm or more.
  • the components of the oily eyelash cosmetics having the composition shown in FIG. 5 were adjusted according to the following manufacturing procedure.
  • isododecane, paraffin, microcrystalline wax, sala beeswax, polyethylene wax, propyl paraoxybenzoate, and natural vitamin E were used as the B phase.
  • Dimethyl distearyl ammonium hectorite and propylene carbonate are used for the C phase
  • trimethylsiloxysilicic acid / isodecane (manufactured by Shin-Etsu Chemical Co., Ltd.) is used for the D phase
  • nylon fiber manufactured by Cosmetics Terials) is used for the E phase. 2 mm was used.
  • the B-phase mixture shown in FIG. 5 was heated to 90 ° C. and mixed with a homogenizer for 1 hour.
  • the composition of phase A and phase C was added to the mixture of phase B, and the mixture was again disrupted with a homogenizer for 2 hours. Then, the obtained mixture was added with the components of the D phase and the E phase at 50 ° C. and uniformly mixed with a homogenizer for 2 hours to obtain an oily eyelash cosmetic.
  • the eyelash cosmetics of Experimental Examples 5 to 8 had a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a make-up lasting. It was superior to Comparative Examples 3 and 4 in all of the stability over time.
  • the eyelash cosmetics containing the co-continuous fibrous carbon of the present embodiment can produce eyelash cosmetics with a small pigment ratio. Even if it does not contain synthetic fibers, it exhibits remarkably excellent curl-keeping effect, long lash effect, volume-up effect, application comfort, makeup retention, and stability over time.
  • phase B isododecane, ester gum, microcrystalline wax, polyethylene wax, carnauba wax, dimethyl distearyl ammonium hectorite, ethanol, polyglyceryl diisostearate, macadamia nut oil fatty acid phytosteryl, and natural vitamin E. And the mica titanium were used.
  • Purified water, polyvinylpyrrolidone, D-pantothenyl alcohol, sodium chloride, and 1,2-pentanediol were used in the C phase.
  • the B-phase mixture shown in FIG. 6 was heated to 95 ° C., the C-phase mixture was heated to 85 ° C., and the heated B-phase and C-phase and A-phase were stirred with a homogenizer for 2 hours while maintaining 85 ° C. Phases B and C were emulsified and phase A was pulverized and dispersed. The obtained mixture was cooled to 40 ° C. with stirring, the components of D phase, E phase, F phase and G phase were added, and the mixture was mixed with a homogenizer for 2 hours. The homogeneous mixture was cooled to 32 ° C. in the air to obtain a water-in-oil type eyelash cosmetic.
  • the eyelash cosmetics of Experimental Examples 9 to 12 have a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a make-up lasting. It was superior to Comparative Examples 5 and 6 in all of the stability over time.
  • the eyelash cosmetics containing the co-continuous fibrous carbon of the present embodiment can produce eyelash cosmetics with a small pigment ratio. Even if it does not contain synthetic fibers, it exhibits remarkably excellent curl-keeping effect, long lash effect, volume-up effect, application comfort, makeup retention, and stability over time.
  • the cosmetic for eyelashes of the present embodiment described above contains co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched as a pigment, and the co-continuous fibrous carbon is produced from cellulose nanofibers.
  • the eyelash cosmetics of the present embodiment use co-continuous fibrous carbon having a three-dimensional network structure as the pigment, so that the fibrous carbons are uniformly dispersed in the eyelash cosmetics without forming a bundle. Further, in the present embodiment, the fibrous carbon is uniformly dispersed in the dispersion medium, so that the blending ratio of the pigment can be lowered, and even when the synthetic fiber is not contained, the curl-keeping effect, the long lash effect, and the effect can be reduced. It is possible to provide eyelash cosmetics that have a volume-increasing effect, elongation during application (applying comfort), and adhesive strength (makeup retention).
  • synthetic fibers normally added to eyelash cosmetics are not included.
  • Synthetic fibers used in eyelash cosmetics are a type of microplastic, which has a large impact on marine pollution, and consumers who are highly environmentally conscious tend to avoid purchasing them. Since the eyelash cosmetics of the present embodiment do not contain such synthetic fibers, it is possible to produce environmentally friendly eyelash cosmetics.
  • the eyelash cosmetics according to the second embodiment of the present invention are eyelash cosmetics containing rod-shaped carbon obtained by crushing co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched.
  • the method for producing co-continuous fibrous carbon of the present embodiment is the same as the method for producing co-continuous fibrous carbon of the first embodiment (see FIG. 1), the description thereof is omitted here.
  • the co-continuous fibrous carbon of the present embodiment has a three-dimensional network structure in which carbon is branched.
  • the rod-shaped carbon has a color according to the progress of carbonization of the co-continuous fibrous carbon. That is, it is possible to change the color of the co-continuous fibrous carbon by adjusting the progress of carbonization. Therefore, by using the rod-shaped carbon of the present embodiment obtained by crushing the co-continuous fibrous carbon, the progress of carbonization of the co-continuous fibrous carbon can be adjusted without preparing pigments of a plurality of colors. It is possible to realize a brown or black eyebrows cosmetic having a different color.
  • Rod-shaped carbon is produced from the obtained co-continuous fibrous carbon.
  • Rod-shaped carbon is a rod-shaped nanocarbon material that is not hollow.
  • the rod is not hollow and refers to a fiber having an aspect ratio (rod length / rod width) of 2 to 200.
  • FIG. 7 is a flowchart showing a method for manufacturing rod-shaped carbon.
  • the production method shown in FIG. 7 further includes a pulverization step (step S5) in the production method of co-continuous fibrous carbon. That is, the method for producing rod-shaped carbon of the present embodiment includes a crushing step of crushing the co-continuous fibrous carbon obtained by the manufacturing method of FIG. 1 to obtain rod-shaped carbon. Since steps S1 to S4 are the same as the manufacturing method of FIG. 1, description thereof will be omitted here.
  • the dried body (co-continuous fibrous carbon) carbonized in the above-mentioned carbonization step (step S4) is crushed (step S5).
  • the crushing process uses, for example, a mixer, a homogenizer, an ultrasonic homogenizer, a high-speed rotary shear type stirrer, a colloidal mill, a roll mill, a high-pressure injection disperser, a rotary ball mill, a vibration ball mill, a planetary ball mill, an attritor, etc. Make continuous fibrous carbon into powder or slurry.
  • the pulverization method includes a wet method and a dry method, but a wet method capable of more uniform and fine pulverization is preferable.
  • the dispersion medium used in the wet state is not particularly limited, but is, for example, an aqueous system such as water (H 2 O), carboxylic acid, methanol (CH 3 OH), ethanol (C 2 H 5 OH), propanol (C 3 H). 7 OH), n-butanol, isobutanol, n-butylamine, dodecane, unsaturated fatty acids, ethylene glycol, heptan, hexadecane, isoamyl alcohol, octanol, isopropanol, acetone, glycerin and at least selected from the group consisting of organic systems. Includes one. Further, the dispersion medium may consist of at least one selected from the above group.
  • step S6 the components of the eyelash cosmetics used in the mixing step (FIG. 9: step S6) described later as the dispersion medium used here.
  • the eyelash cosmetics do not contain an unnecessary dispersion medium, it is preferable to use the components of the eyelash cosmetics as the dispersion medium used in the pulverization step.
  • FIG. 8 is an SEM image of rod-shaped carbon produced by the manufacturing method of the present embodiment. The magnification in FIG. 8 is 100,000 times. From FIG. 8, it can be seen that rod-shaped carbon is formed.
  • the rod-shaped carbon of the present embodiment is a naturally derived raw material and has a low burden on the environment.
  • the rod-shaped carbon of the present embodiment has a rod-shaped structure (shape). Therefore, even when this rod-shaped carbon is added to eyelash cosmetics as a black pigment, the rod structure is oriented along the eyelash direction at the time of application, resulting in excellent curl-keeping effect, long rush effect, volume-up effect, and application. It is possible to achieve time extension (feeling of application) and adhesive strength (makeup lasting). That is, the rod-shaped carbons are oriented and arranged in the longitudinal direction in parallel with the eyelashes (application direction).
  • the rod diameter of the rod-shaped carbon is too small, there is a concern about deposition in the living body and effects on the living body. Further, if the rod diameter is too large, the dispersibility is lowered when added to the eyelash cosmetics, and sufficient color development performance cannot be obtained. Therefore, the rod diameter is preferably 10 nm to 200 nm.
  • the rod length of the rod-shaped carbon is preferably 20 nm to 400 nm, more preferably 50 nm to 200 nm. This is because when the rod length is crushed to be smaller than 20 nm, the aspect ratio (rod length / rod width) of the rod-shaped carbon becomes small, and the specificity due to the shape of the nanorod is lost. Further, when it exceeds 400 nm, the branched structure of the co-continuous fibrous carbon remains, which makes it difficult to manufacture the rod-shaped carbon.
  • the rod-shaped carbon is a cylinder, but if there is a branch portion, the rod-shaped carbon does not have the shape of a cylinder. That is, if the branched portion remains, it becomes difficult to manufacture rod-shaped carbon in the shape of a cylinder.
  • rod-shaped carbon having a rod diameter of 10 nm to 200 nm and a rod length of 20 nm to 400 nm is used for eyelash cosmetics
  • the rod-shaped carbon is oriented along the eyelash direction at the time of application to maintain excellent curl. It is possible to realize the effect, long lash effect, volume up effect, elongation at the time of application (applyance comfort), and adhesive force (makeup retention).
  • the rod length described in this embodiment is defined as the average value of the lengths measured by observing the rod-shaped carbon by SEM and tracing the rod.
  • the number of measurement points is 500 or more.
  • the cellulose nanofibers used have a fiber diameter of 20 nm to 400 nm and a fiber length of 500 nm to 4 ⁇ m. ..
  • cellulose nanofibers are carbonized in the carbonization step (step 4), and the fibers become thinner and shorter than before carbonization due to decomposition, combustion, activation, and the like.
  • the fibers aggregate in the freezing step (step S2), and a dried cellulose nanofiber having a large fiber diameter can be obtained in the subsequent drying step (step S3). .. Therefore, when cellulose nanofibers having a fiber diameter smaller than 20 nm are used, the fiber diameter of the obtained co-continuous fibrous carbon becomes larger than 200 nm.
  • Eyelash cosmetics include pigments, waxes, liquid oils, coating agents, thickeners and the like.
  • the pigment includes rod-shaped carbon made from co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched.
  • FIG. 9 is a flowchart showing a method for manufacturing eyelash cosmetics according to the present embodiment.
  • the illustrated manufacturing method further includes a mixing step (step S6) in the manufacturing method (steps S1-S5) shown in FIG. That is, in the eyelash cosmetics of the present embodiment, the mixing step of step S6 is added to the rod-shaped carbon produced in steps S1-S5 of FIG. 7.
  • the material (rod-shaped carbon) crushed in the crushing step (step S5) is mixed with the wax, liquid oil, film agent, and thickener used for the eyelash cosmetics to obtain the eyelash cosmetics (step S5).
  • Step S6 the material (rod-shaped carbon) crushed in the crushing step.
  • the wax, liquid oil, film agent, and thickener used in this embodiment are the same as the wax, liquid oil, film agent, and thickener described in the first embodiment. Therefore, the description thereof is omitted here.
  • an ingredient usually added to eyelash cosmetics may be added as long as the effect of the present embodiment is not impaired.
  • examples of such components include synthetic fibers, alcohols, polyhydric alcohols, chemicals, surfactants, water-soluble polymers, clay minerals, powders, preservatives, fragrances, antioxidants, ultraviolet absorbers, and moisturizers.
  • examples thereof include oily components such as agents, water, oils and fats, and hydrocarbon oils.
  • the mixing step uses, for example, a mixer, a homogenizer, an ultrasonic homogenizer, a high-speed rotary shear type stirrer, a colloid mill, a roll mill, a high-pressure injection disperser, a rotary ball mill, a vibration ball mill, a planetary ball mill, an attritor, a kneader, and the like. be able to.
  • the manufacturing method of this embodiment does not have to include all the steps. For example, by simultaneously adding wax, liquid oil, a film agent, and a thickener during the pulverization step, pulverization and mixing can be performed at the same time, and in this case, the mixing step does not have to be performed.
  • Experimental Example 1 is an oil-in-water type eyelash cosmetic containing rod-shaped carbon made from co-continuous fibrous carbon.
  • the eyelash cosmetics of Experimental Example 1 were produced by the following procedure.
  • cellulose nanofibers (average fiber diameter 60 nm, average fiber length 1 ⁇ m) were used, and 1 g of cellulose nanofibers and 10 g of ultrapure water were stirred with a homogenizer (manufactured by SMT) for 12 hours to disperse the cellulose nanofibers. The liquid was adjusted and poured into a test tube.
  • the cellulose nanofiber dispersion was completely frozen by freezing the above test tube in a freezer at -30 ° C for 2 hours. After completely freezing the cellulose nanofiber dispersion, take out the frozen cellulose nanofiber dispersion on a planet and dry it in a vacuum of 10 Pa or less with a freeze dryer (manufactured by Tokyo Science Instruments Co., Ltd.) for 24 hours. A dried product of cellulose nanofibers was obtained. After drying in a vacuum, the cellulose nanofibers were carbonized by firing at 600 ° C. for 2 hours in a nitrogen atmosphere, whereby the co-continuous fibrous carbon of Experimental Example 1 was produced. When the co-continuous fibrous carbon produced in this experimental example was observed by SEM, it was confirmed that the average fiber diameter was 30 nm and the average fiber length was 500 nm.
  • a zirconia ball having a diameter of 0.8 mm to 1.0 mm is used in a ball mill (manufactured by Nippon Densan Sympo), and the zirconia balls are crushed at a rotation speed of 60 r / min for 72 hours. Therefore, the crushing step was performed. Then, using a hot plate, it was dried at 80 ° C. for 12 hours to evaporate water as a dispersion medium to prepare rod-shaped carbon.
  • composition and blending amount of the B phase to F phase of the eyelash cosmetics (Experimental Example 1-4, Comparative Example 1-2) shown in FIG. 10 are the same as those in FIG. 4 of the first embodiment.
  • the B-phase mixture is heated to 85 ° C.
  • the C-phase mixture is heated to 95 ° C.
  • the heated B-phase and C-phase and A-phase are stirred with a homogenizer for 30 minutes to emulsify the B-phase and C-phase, and A.
  • the phase was ground and dispersed.
  • the resulting mixture was cooled to 60 ° C. with stirring, the D, E and F phase components were added and mixed with a homogenizer for 30 minutes.
  • the homogeneous mixture was cooled to 32 ° C. in the air to obtain the eyelash cosmetic of Experimental Example 1.
  • Comparative Example 1 is an eyelash cosmetic in which the rod-shaped carbon of the eyelash cosmetic of Experimental Example 1 is replaced with the conventionally used black iron oxide (spherical, average particle size 2 ⁇ m).
  • the eyelash cosmetics of Experimental Example 1 are compared in the evaluation of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. It was superior to Example 1.
  • the eyelash cosmetics containing rod-shaped carbon made from the co-continuous fibrous carbon of the present embodiment have significantly superior curls as compared with the eyelash cosmetics containing black iron oxide. It has a keep effect, a long lash effect, a volume-up effect, a feeling of application, long-lasting makeup, and stability over time.
  • Experimental Example 2 is an eyelash cosmetic containing 5% by mass of rod-shaped carbon in the eyelash cosmetic of Experimental Example 1. Therefore, in Experimental Example 2, the blending amount of purified water was increased by 5% by mass as compared with Experimental Example 1. Using the composition and blending amount shown in FIG. 10, the eyelash cosmetics of this experimental example were prepared by the same production method as in experimental example 1.
  • FIG. 10 shows the evaluation results of Experimental Example 2 evaluated by the above evaluation method. From the evaluation results of FIG. 10, Experimental Example 2 was superior to Comparative Example 1 in the evaluation of curl keeping effect, long rush effect, volume up effect, application comfort, makeup retention, and stability over time. In addition, it can be seen that the coating comfort is superior to that of Experimental Example 1. It is considered that this is because the amount of rod-shaped carbon contained in the eyelash cosmetics decreased, the viscosity decreased, and the eyelash cosmetics spread better at the time of application.
  • the blending amount of rod-shaped carbon is preferably 5% by mass or less of the eyelash cosmetics.
  • the amount of rod-shaped carbon was less than 0.5% by mass and the same as in Experimental Example 2 except for purified water, sufficient black color could not be obtained, and as eyelash cosmetics. could not be used.
  • Sufficient black in this case means that a 5 cm line is overlaid on the back of the hand three times using a brush for eyelash cosmetics, and the black line is not interrupted by 2 cm or more.
  • Experimental Example 3 is an eyelash cosmetic produced from the eyelash cosmetic of Experimental Example 2 without including F-phase nylon fiber.
  • the blending amount of the A phase to the E phase excluding purified water is the same as that of Experimental Example 2. Therefore, in Experimental Example 3, the blending amount of purified water was increased by 2% by mass as compared with Experimental Example 2.
  • the eyelash cosmetics of this experimental example were prepared by the same production method as in experimental example 1.
  • FIG. 10 shows the evaluation results of Experimental Example 3 evaluated by the above evaluation method. From the results of FIG. 10, Experimental Example 3 was superior to Comparative Example 1 in the evaluation of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. Further, Experimental Example 3 is evaluated as having a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a long-lasting makeup as compared with Experimental Example 2.
  • Example 4 In Experimental Example 4, the amount of components (phases B to E other than purified water) that affect the curl-keeping effect, long lash effect, volume-up effect, application comfort, makeup retention, and stability over time of Experimental Example 3 is used. Increased eyelash cosmetics.
  • a cosmetic for eyelashes was prepared by the same production method as in Experimental Example 1 using the composition and the blending amount shown in FIG. Specifically, in this experimental example, the difference in weight (7% by mass) between the A phase (rod-shaped carbon) and the F phase (nylon fiber) of Experimental Example 1 and Experimental Example 3 is mixed with Experimental Example 1. Allocated to phases B to E other than purified water so as to be the same as the ratio, and prepared so that the total weight other than purified water was equivalent to that of Experimental Example 1. In FIG. 10, the total of the components other than the purified water of Experimental Example 4 does not match the total of the components other than the purified water of Experimental Example 1, but this is a difference due to rounding off to the third decimal place. Is.
  • FIG. 10 shows the evaluation results of Experimental Example 4 evaluated by the above evaluation method. From the results of FIG. 10, Experimental Example 4 was superior to Comparative Example 1 in the evaluation of curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. In addition, Experimental Example 4 had better makeup retention than Experimental Example 1-3. This is due to the increase in the amount of ingredients (phases B to E other than purified water) that affect the curl-keeping effect, long rush effect, volume-up effect, application comfort, makeup retention, and stability over time. ..
  • the amount of the A-phase pigment added can be reduced, and instead of adding the F-phase nylon fiber, others can be used. Since the amount of the component added can be increased, such excellent performance can be realized.
  • Comparative Example 2 is a cosmetic for eyelashes in which the rod-shaped carbon of Experimental Example 4 is replaced with the conventionally used black iron oxide (spherical, average particle size 2 ⁇ m). Specifically, in Comparative Example 2, black iron oxide was used for the A phase of Experimental Example 4, and other eyelash cosmetics were prepared in the same manner as in Experimental Example 4.
  • Comparative Example 2 since black iron oxide is used as a pigment, dispersibility is poor, and when the blending amount is 5% by mass or less, sufficient black color cannot be obtained and it cannot be used as a cosmetic for eyelashes. rice field. Sufficient black in this case means that a 5 cm line is overlaid on the back of the hand three times using a brush for eyelash cosmetics, and the black line is not interrupted by 2 cm or more.
  • the components of the oily eyelash cosmetics having the composition shown in FIG. 11 were adjusted according to the following manufacturing procedure.
  • the composition and blending amount of the B phase to E phase of the eyelash cosmetics shown in FIG. 11 are the same as those of FIG. 5 of the first embodiment.
  • the B-phase mixture shown in FIG. 11 was heated to 90 ° C. and mixed with a homogenizer for 30 minutes.
  • the composition of phase A and phase C was added to the mixture of phase B, and the mixture was again mixed with a homogenizer for 30 minutes.
  • the obtained mixture was added with the components of the D phase and the E phase at 50 ° C. and uniformly mixed with a homogenizer for 30 minutes to obtain an oily eyelash cosmetic.
  • the eyelash cosmetics of Experimental Examples 5 to 8 had a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a make-up lasting. It was superior to Comparative Examples 3 and 4 in all of the stability over time.
  • the eyelash cosmetics containing rod-shaped carbon of the present embodiment can produce eyelash cosmetics with a small pigment ratio, and synthetic fibers can be produced. Even if it does not contain, it exhibits remarkably excellent curl keeping effect, long lash effect, volume up effect, application comfort, makeup retention, and stability over time.
  • the components of the water-in-oil type eyelash cosmetics having the composition shown in FIG. 12 were adjusted according to the following manufacturing procedure.
  • the composition and blending amount of the B-phase to G-phase of the eyelash cosmetics shown in FIG. 12 are the same as those in FIG. 6 of the first embodiment.
  • the B-phase mixture shown in FIG. 12 is heated to 95 ° C., the C-phase mixture is heated to 85 ° C., and the heated B-phase and C-phase and the A-phase are stirred with a homogenizer for 30 minutes to obtain the B-phase and C-phase. It was emulsified and the A phase was ground and dispersed.
  • the obtained mixture was cooled to 40 ° C. with stirring, the components of D phase, E phase, F phase and G phase were added, and the mixture was mixed with a homogenizer for 30 minutes.
  • the homogeneous mixture was cooled to 32 ° C. in the air to obtain a water-in-oil type eyelash cosmetic.
  • the eyelash cosmetics of Experimental Examples 9 to 12 have a curl-keeping effect, a long rush effect, a volume-up effect, a feeling of application, and a make-up lasting. It was superior to Comparative Examples 5 and 6 in all of the stability over time.
  • the eyelash cosmetics containing rod-shaped carbon of the present embodiment can produce eyelash cosmetics with a small pigment ratio. Even if it does not contain synthetic fibers, it exhibits remarkably excellent curl-keeping effect, long lash effect, volume-up effect, application comfort, makeup retention, and stability over time.
  • the cosmetic for eyebrows of the present embodiment described above contains rod-shaped carbon obtained by crushing co-continuous fibrous carbon having a three-dimensional network structure in which carbon is branched, and the co-continuous fibrous carbon is cellulose nanofibers. Made from.
  • the eyelash cosmetic of the present embodiment uses rod-shaped carbon as a pigment, and the rod-shaped carbon is oriented in the direction of the eyelashes, resulting in excellent curl-keeping effect, long rush effect, volume-up effect, and application. Elongation (feeling of application) and adhesive strength (makeup lasting) can be obtained.
  • the rod-shaped carbon is uniformly dispersed in the eyelash cosmetics without forming a bundle. That is, in the present embodiment, the rod-shaped carbon is uniformly dispersed in the dispersion medium, so that the blending ratio of the pigment can be lowered, and even when synthetic fibers are not contained, the curl-keeping effect, the long lash effect, and the effect can be reduced. It is possible to provide eyelash cosmetics that have a volume-increasing effect, elongation during application (applying comfort), and adhesive strength (makeup retention).
  • synthetic fibers normally added to eyelash cosmetics are not included.
  • Synthetic fibers used in eyelash cosmetics are a type of microplastic, which has a large impact on marine pollution, and consumers who are highly environmentally conscious tend to avoid purchasing them. Since the eyelash cosmetics of the present embodiment do not contain such synthetic fibers, it is possible to produce environmentally friendly eyelash cosmetics.

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Abstract

Produit cosmétique pour cils comprenant, en tant que pigment, un carbone fibreux co-continu présentant une structure de réseau tridimensionnel dans laquelle un carbone est ramifié, le carbone fibreux co-continu étant constitué de nanofibres de cellulose.
PCT/JP2020/022536 2020-06-08 2020-06-08 Produit cosmétique pour cils WO2021250742A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003327523A (ja) * 2002-05-13 2003-11-19 Nonogawa Shoji Kk 皮膚外用剤
JP2004250595A (ja) * 2003-02-20 2004-09-09 Sugizaki Fumiko 黒色顔料の製造方法
US20050229334A1 (en) * 2004-04-15 2005-10-20 Xueying Huang Hair coloring and cosmetic compositions comprising carbon nanotubes
JP2007039861A (ja) * 2005-06-29 2007-02-15 Daito Kasei Kogyo Kk 黒色着色短繊維および配合化粧料
WO2018194079A1 (fr) * 2017-04-21 2018-10-25 日本電信電話株式会社 Timbre transdermique pour tissu biologique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003327523A (ja) * 2002-05-13 2003-11-19 Nonogawa Shoji Kk 皮膚外用剤
JP2004250595A (ja) * 2003-02-20 2004-09-09 Sugizaki Fumiko 黒色顔料の製造方法
US20050229334A1 (en) * 2004-04-15 2005-10-20 Xueying Huang Hair coloring and cosmetic compositions comprising carbon nanotubes
JP2007039861A (ja) * 2005-06-29 2007-02-15 Daito Kasei Kogyo Kk 黒色着色短繊維および配合化粧料
WO2018194079A1 (fr) * 2017-04-21 2018-10-25 日本電信電話株式会社 Timbre transdermique pour tissu biologique

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