Eyelash cosmetics

Abstract

To provide a cosmetic for eyelashes that gives an excellent finish with a natural long-lash effect, and properly adheres to the eyelashes.SOLUTION: A water-in-oil or an oil-based cosmetic for eyelashes contains component (A) calcium silicate and / or calcium carbonate, component (B) a hydrocarbon wax, component (C) a volatile hydrocarbon, component (D) a silicon-based oily film former, and component (E) a gelator.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cosmetic for eyelashes, and more particularly to a cosmetic for eyelashes that has an excellent finish with a natural long lash effect and is excellent in appropriate adhesion to eyelashes. [Background technology]

[0002] The effects desired from eyelash cosmetics include a long lash effect that makes eyelashes appear longer, a volume effect that makes eyelashes appear thicker, and a curl-keeping effect that keeps eyelashes in place when they are curved upward. These effects make the eyes look clear and beautiful. With the current trend of wearing masks, eyelash cosmetics are in particularly high demand.

[0003] In particular, when it comes to the long lash effect, in the past, false eyelashes and eyelash extensions were popular, and a strong effect was sought even if it looked unnatural. However, in recent years, there has been a strong demand for a natural long lash effect based on one's own eyelashes, in order to achieve a finish that is an extension of a natural look.

[0004] Conventionally, the main method for imparting a long lash effect to eyelash cosmetics has been to simply blend in fibers. For example, Patent Document 1 discloses a method of blending fibers such as nylon and rayon to make eyelashes appear longer. Patent Document 2 discloses a method of blending polytrimethylene terephthalate fibers with silicic anhydride as a powder to enhance the effect of the fibers.

[0005] However, while the long lash effect of fibers is expected to make eyelashes appear longer by applying fine fibers to the tips of the eyelashes, it is difficult to apply the fibers neatly along the eyelashes, and sufficient long lash effect could not be obtained. Also, when fibers are added, it is difficult to adjust the amount of fiber attached to the eyelashes, resulting in an unnatural long lash effect and finish in which the eyelashes clump together or the cosmetics become clumped, and furthermore, the weight of the fibers themselves sometimes prevents sufficient curl retention.

[0006] Furthermore, in an attempt to achieve a long lash effect without incorporating fibers, the incorporation of high-polymerization polyethylene glycol has been disclosed (Patent Document 3). However, although the viscosity characteristics of high-polymerization polyethylene glycol are expected to have a volume-increasing effect, the long lash effect was not satisfactory.

[0007] On the other hand, calcium silicate and calcium carbonate have been used to improve the moldability of solid powder cosmetics and to adjust the feel when used. These powders often feel rough when applied to the skin, so they have not been actively incorporated into cosmetics other than powder cosmetics. Furthermore, it was not known that they have the effect of lengthening eyelashes in eyelash cosmetics. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 9-263518 [Patent Document 2] Japanese Patent Publication No. 2020-55804 [Patent Document 3] Japanese Patent Application Publication No. 11-79940 Summary of the Invention [Problem to be solved by the invention]

[0009] In view of the above background, an object of the present invention is to provide a cosmetic for eyelashes that provides an excellent finish with a natural long lash effect and that adheres well to the eyelashes. [Means for solving the problem]

[0010] In light of this situation, the present inventors have conducted extensive research and have found that: The inventors have found that the above problems can be solved by blending a specific calcium silicate and / or calcium carbonate into a water-in-oil or oily eyelash cosmetic, and have thus completed the present invention.

[0011] That is, the present invention provides: Component (A) calcium silicate and / or calcium carbonate Component (B) Hydrocarbon wax Component (C) Volatile Hydrocarbons Component (D) Silicone-based oily film-forming agent Component (E) Gelling Agent The present invention relates to a water-in-oil or oily eyelash cosmetic composition containing [Effects of the Invention]

[0012] The present invention provides a water-in-oil or oily cosmetic for eyelashes that has an excellent finish with a more natural long lash effect and is excellent in appropriate adhesion to eyelashes, even without blending fibers. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be described in detail below.

[0014] The components (A) calcium silicate and calcium carbonate used in the present invention are types of oxoacid salts of calcium, a metal element. Found in nature in limestone and other materials, they are not known to be harmful to health and are therefore used in a variety of applications, including construction, as a cosmetic ingredient, and as a food additive.

[0015] The calcium silicate component (A) used in the present invention is a composition in which calcium oxide, silicon dioxide, and water are bonded in any ratio. Examples include xonotlite, which is bonded in a ratio of calcium oxide:silicon dioxide:water=6:6:1, tobermorite, which is bonded in a ratio of calcium oxide:silicon dioxide:water=5:6:5, and gyrolite, which is bonded in a ratio of calcium oxide:silicon dioxide:water=2:3:2. Each of these can be adjusted to have a different shape depending on the bonding ratio.

[0016] The calcium carbonate (component (A)) used in the present invention is a calcium carbonate represented by CaCO. In particular, calcium carbonate produced by a chemical reaction is called precipitated calcium carbonate, and it is possible to adjust the form of calcium carbonate to various different shapes depending on the reaction conditions.

[0017] The shape of component (A) calcium silicate and calcium carbonate is not particularly limited. For example, fibrous, strip-like, layered, petal-like, and card-house-like shapes are available. From the standpoint of adhesion to eyelashes, a porous powder with an uneven surface is preferred, with a petal-like shape being particularly preferred. While the exact mechanism is unclear, it is presumed that the unevenness of the petal-like powder surface, such as that of petal-like calcium silicate composed of gyrolite-type calcium silicate and amorphous silicon dioxide, makes it easier for the formulation to catch on the eyelashes, improving adhesion to the eyelashes. Furthermore, the ingredients themselves are easily entangled, resulting in an excellent long-lash effect.

[0018] The size of the calcium silicate and calcium carbonate of component (A) is not particularly limited, but from the viewpoint of usability, it is preferably 100 μm or less, and more preferably 50 μm or less.

[0019] Commercially available calcium silicate products include Fluorite R (petal-shaped; average particle size 25 μm) (manufactured by Tomita Pharmaceutical Co., Ltd.). Commercially available calcium carbonate products include LDR CA (petal-shaped; average particle size 13 μm) (manufactured by Toshoku Pigment Co., Ltd.) and DOCMINERAL® CC (average particle size 3.6 μm) (manufactured by DOC JAPAN Co., Ltd.). One or more types of component (A) can be used.

[0020] The content of calcium silicate and calcium carbonate (Component (A)) used in the present invention is not particularly limited, but is 0.1 to 5.0% by mass (hereinafter simply referred to as "%"), preferably 0.3 to 3.0% by mass, and more preferably 0.5 to 1.0% by mass, in the total amount of the eyelash cosmetic. Within this range, when applied to the eyelashes, clumps of small particles resting on the eyelashes are unlikely to form, and the eyelashes are less likely to stick together, forming a coating that allows each individual eyelash to grow independently, resulting in an eyelash cosmetic with excellent, natural long lash effects.

[0021] The hydrocarbon wax used in the present invention, which has a penetration index of 16 to 80 at 25°C as component (B), is solid at 25°C and includes petroleum-derived, mineral-derived, synthetic, etc. The penetration index is determined by measuring the length of penetration of a specified needle (needle mass 2.5±0.02g, needle holder mass 47.5±0.02g, weight mass 50±0.05g) into a wax sample maintained at 25±0.1°C in 5 seconds, and multiplying this penetration distance (mm) by 10 to obtain the penetration index, a value measured in accordance with JIS K-2235-5.4 (1991).

[0022] The hydrocarbon wax component (B) used in the present invention, having a penetration of 16 to 80 at 25°C, can be any wax commonly used in cosmetics. Examples include paraffin, microcrystalline wax, and polyethylene wax. Specific examples include Hi-Mic-1045 (penetration of 28 to 42), EMW-0003 (penetration of 23 to 53) (manufactured by Nippon Seiro Co., Ltd.), Multiwax W-835 (penetration of 60 to 80), and Multiwax ML-445 (penetration of 25 to 35) (manufactured by Sonneborn). The penetration of each raw material was determined according to the manufacturer's specifications. One or more types of component (B) can be used. When using hydrocarbon waxes with different penetrations, the wax should have a penetration of 16 to 80 at 25°C after melt mixing.

[0023] The content of the hydrocarbon wax having a penetration of 16 to 80 at 25°C in component (B) used in the present invention is not particularly limited, but is 4 to 30%, preferably 6 to 25% by mass, and more preferably 8 to 21% of the total amount of the eyelash cosmetic. This range provides an appropriate viscosity to the formulation and improves the adhesion of the eyelash cosmetic to the eyelashes, thereby further improving the natural long lash effect.

[0024] The volatile hydrocarbon component (C) used in the present invention is preferably an isoparaffinic hydrocarbon oil having a low boiling point (a boiling point of 260° C. or less at normal pressure).

[0025] Specific examples of low-boiling isoparaffin hydrocarbon oils (light isoparaffins) include Isopar A, C, E, G, H, K, L, and M (all manufactured by Exxon), Pearleem 4 (manufactured by NOF Corporation), and CREASIL ID CG (manufactured by Presperse Europe GmbH). The amount of component (C) used in the present invention is not particularly limited, but is 10 to 80% of the total amount of the eyelash cosmetic, preferably 12 to 75% by mass, and more preferably 14 to 70%.

[0026] The silicone-based oily film-forming agent (D) used in the present invention can improve resistance to sweat, tears, sebum, etc., enhance the curl retention of eyelashes, and improve the effect of suppressing secondary adhesion (transfer) to other parts (hair or skin). Component (D) is not particularly limited as long as it is a film-forming agent that is typically incorporated into cosmetics. Examples include silicone resins such as trimethylsiloxysilicate and polymethylsilsesquioxane, fluorine-modified silicone resins, and acrylic silicone copolymer resins, but are not limited to these examples.

[0027] Among these, silicone resins are particularly preferred, and among them, trimethylsiloxysilicate (commercially available products include KF-7312J and X-21-5250 (both manufactured by Shin-Etsu Silicones Co., Ltd.)) and polymethylsilsesquioxane such as SILFORM FLEXIBLE FLUID (manufactured by MOMENTIVE Co., Ltd.) can be used, but are not limited to these. Component (D) can be used alone or in combination with other components.

[0028] When component (D) is blended, the blending amount is preferably 1 to 50% by mass, more preferably 5 to 40% by mass, and particularly preferably 10 to 30% by mass, based on the total amount of the eyelash cosmetic.

[0029] The gelling agent (E) used in the present invention is not particularly limited, and examples thereof include dextrin fatty acid esters and organically modified clay minerals.

[0030] The dextrin fatty acid ester is an ester of dextrin or reduced dextrin with a higher fatty acid. The dextrin or reduced dextrin preferably has an average degree of glycopolymerization of 3 to 100, preferably 10 to 50. The higher fatty acid is preferably a saturated fatty acid having 8 to 24 carbon atoms, preferably 14 to 18 carbon atoms. Specific examples of dextrin fatty acid esters include dextrin palmitate, dextrin palmitate / 2-ethylhexanoate, dextrin stearate, and dextrin palmitate / stearate, and one or more of these can be used. Commercially available products include Leopearl KL, Leopearl TL (dextrin palmitate), and Leopearl TT (dextrin palmitate / 2-ethylhexanoate) (all manufactured by Chiba Flour Milling Co., Ltd.).

[0031] Examples of the organically modified clay minerals include those in which the convertible cations present between the crystal layers of clay minerals (e.g., montmorillonite, saponite, hectorite, bentonite, etc.) have been replaced with organic polar compounds or organic cations. Specific examples include dimethyl distearyl ammonium hectorite (quaternium-18 hectorite) and dimethyl distearyl ammonium bentonite (quaternium-18 bentonite). Examples of the organically modified clay minerals used in the present invention include Benton 38 (quaternium-18 hectorite) and Benton 34 (quaternium-18 bentonite) (both manufactured by Rheox Corporation).

[0032] Component (E) can be used alone or in combination with two or more types. The blending amount of component (E) is preferably 1 to 25 mass % of the total amount of the eyelash cosmetic, more preferably 3 to 20 mass %, and particularly preferably 5 to 15 mass %.

[0033] The component (F) used in the present invention, a copolymer of an α-olefin having 16 or more carbon atoms and vinylpyrrolidone, is a copolymer synthesized from an α-olefin having 16 or more carbon atoms and vinylpyrrolidone. Any copolymer commonly used in cosmetics can be used without any particular limitation. Examples of commercially available products include ANTARON V-216, ANTARON V-220, and ANTARON WP-660 (manufactured by Ashland). One or more types of component (F) can be used.

[0034] The content of component (F) used in the present invention, a copolymer of an α-olefin having 16 or more carbon atoms and vinylpyrrolidone, is not particularly limited, but is 1 to 10% of the total amount of the eyelash cosmetic, preferably 2 to 9% by mass, and more preferably 3 to 8%.

[0035] In addition to the above-mentioned components (A), (B), (C), (D), (E), and (F), the eyelash cosmetic of the present invention may contain aqueous components other than the essential components typically used in cosmetics, such as oily components, powders such as inorganic pigments, organic pigments, and coloring matters, surfactants, fibers, polyhydric alcohols, water-soluble polymers, water-soluble film-forming resins, humectants, sugars, ultraviolet absorbers, anti-fading agents, antioxidants, antifoaming agents, cosmetic ingredients, and moisture-proofing agents, within limits that do not impair the effects of the present invention.

[0036] The water-in-oil or oily eyelash cosmetic of the present invention may be in any form, such as liquid, gel, or cream, but is a water-in-oil or oily composition having oil as a continuous phase, and the water content is preferably 10% or less, more preferably 5% or less, and particularly preferably does not contain water. [Example]

[0037] EXAMPLES The present invention will be explained in detail below by showing examples and comparative examples of the eyelash cosmetic composition of the present invention, but the present invention is not limited to the following examples.

[0038] Examples 1 to 14 and Comparative Examples 1 to 8: Eyelash Cosmetics Oily eyelash cosmetics were prepared according to the formulations shown in Tables 1 and 2 below, and the long lash effect, finish, and adhesion were evaluated by the following methods. The results are also shown in Table 1.

[0039] [Table 1]

[0040] [Table 2]

[0041] JPEG0007752957000003.jpg3753

[0042] (Manufacturing method) a. Heat and dissolve ingredients (1) to (21) uniformly at 100°C. Add ingredients (22) to (30) to ba and mix uniformly. The composition cb was filled into a container with an applicator to obtain a cosmetic for eyelashes.

[0043] (Evaluation method) The following evaluation items were evaluated by the following methods. (Evaluation items): (Evaluation viewpoint) B. Long lash effect: Whether your eyelashes are long or not B. Finish: After application, are there any small powdery clumps on the eyelashes? Does it have a natural finish? C. Adhesion: Whether the cosmetic adheres evenly to the eyelashes

[0044] Judgment item Each sample was tested by a panel of five expert evaluators for items A, B, and C. All evaluators applied each sample to their eyelashes, and each evaluator rated each item A, B, and C on a 7-point scale using the absolute evaluation criteria below, and then calculated the average score from the total scores of all panelists, and judged according to the following criteria.

[0045] (Rating): (Evaluation) 6: Very good 5: Good 4: Fairly good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad

[0046] (Judgment criteria) (Judgment): (Average score) ◎: Over 5 points ○: Over 3.5 points and 5 points or less △: Over 1 point and 3.5 points or less ×: 1 point or less

[0047] As is clear from the results in Tables 1 and 2, the eyelash cosmetics of Examples 1 to 14 of the present invention were superior in long lash effect, finish, and adhesion compared to the eyelash cosmetics of Comparative Examples 1 to 8. On the other hand, in Comparative Examples 1 to 6, in which powders of other ingredients were blended instead of ingredient (A), satisfactory results were not obtained in terms of the long lash effect or finish, or both. In Comparative Example 7, in which the blending amount of ingredient (B) was small, adhesion was low, and satisfactory results were not obtained in either the long lash effect or the finish. In Comparative Example 8, in which ceresin with low penetration (penetration 12) was blended instead of ingredient (B), uniform adhesion was not obtained, and satisfactory results were not obtained in either the long lash effect or the finish.

[0048] Other examples are shown below. The blending amount of each eyelash cosmetic is shown as 100% by mass. The numbers following each component indicate the blending amount. Example 15: Oil-based liquid mascara (fiber type) (component) (1) Light isoparaffin remaining amount (2) Trimethylsiloxysilicate 20.00 (3) Microcrystalline wax (penetration 78) 15.00 (4) Eicosene-vinylpyrrolidone copolymer 4.00 (5) Synthetic wax 5.00 (6) Beeswax 3.00 (7) Decamethylcyclopentasiloxane 2.50 (8) Paraffin 2.00 (9) Isostearic acid 2.00 (10) Dextrin palmitate 1.50 (11) Dextrin (Palmitic acid / 2-ethylhexanoic acid) 1.50 (12) Heavy Liquid Isoparaffin 1.50 (13) Carnauba wax 1.00 (14) Vaseline 1.00 (15) Hydrogenated rosin acid pentaerythrityl 1.00 (16) Polyethylene wax 0.20 (17) d-δ-tocopherol 0.10 (18) Phenoxyethanol 0.05 (19) Black iron oxide 5.00 (20) Nylon fiber (Nylon fiber 6 denier 2 mm) 1.50 (21) Silica anhydride 1.00 (22) Talc 1.00 (23) Titanium dioxide 1.00 (24) Calcium silicate (petal-shaped) 0.75

[0049] (Manufacturing method) a. Heat and dissolve ingredients (1) to (18) uniformly at 100°C. Add ingredients (19) to (24) to ba and mix uniformly. The composition cb was filled into a container with an applicator to obtain a cosmetic for eyelashes.

[0050] The oil-based liquid mascara (fiber-containing type) of the present invention also had excellent long lash effect, finish, and adhesion.

[0051] Example 16: Water-in-oil mascara (cream type) (component) (1) Light liquid isoparaffin remaining amount (2) Trimethylsiloxysilicate 20.00 (4) Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone 2.50 (5) Eicosene-vinylpyrrolidone copolymer 4.00 (6) Dextrin palmitate 1.00 (7) Microcrystalline wax (penetration 39) 10.00 (8) Dimethicone 3.00 (9) Disteardimonium Hectorite 4.00 (10) Fumed silica 0.50 (11) Black iron oxide 5.00 (12) Calcium silicate (petal-shaped) 0.75 (13) Purified water 10.00 (14) Ethanol 5.00 (15) Acrylates copolymer 5.00

[0052] (Manufacturing method) a. Heat and dissolve ingredients (1) to (12) uniformly at 100°C. b. Mix ingredients (13) to (15) uniformly. Add b to ca and mix evenly. The eyelash cosmetic was obtained by filling dc into a container with an applicator.

[0053] The water-in-oil mascara (cream type) of the present invention was excellent in long lash effect, finish, and adhesion.

Claims

1. Component (A) Petal-shaped or irregular calcium silicate and / or calcium carbonate 0.1 to 5% by mass Component (B) 4 to 30% by mass of a hydrocarbon wax having a needle penetration at 25°C of 16 to 80 Component (C) Volatile hydrocarbons 10 to 80 mass% Component (D) Silicone-based oily film-forming agent 1 to 50% by mass Component (E) Gelling agent 1 to 25% by mass containing Water-in-oil or oily eyelash cosmetics.

2. 2. The cosmetic for eyelashes according to claim 1, further comprising component (F) a copolymer of an α-olefin having 16 or more carbon atoms and vinylpyrrolidone.

3. 3. The eyelash cosmetic according to claim 1, wherein component (A) is petal-shaped or amorphous calcium silicate, and component (B) is microcrystalline wax.

4. 4. The cosmetic for eyelashes according to claim 1, which is substantially free of fibers.

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