Eyebrow cosmetic

Abstract

To provide an eyebrow cosmetic that allows suppression of deterioration in application performance of an applicator.SOLUTION: An eyebrow cosmetic comprising water and a surfactant, where the surfactant is a polyoxyethylene alkyl ether having an HLB of 12 or more.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cosmetic for eyebrows. [Background technology]

[0002] Conventionally, eyebrow cosmetics that are filled into applicators known as liquid eyebrows have been known. These cosmetics are primarily water-based (liquid type). These applicators typically have a tip with a fiber bundle.

[0003] As an example of such a cosmetic, Patent Document 1 describes a cosmetic containing a polyether-modified silicone with an HLB of 7 to 13. It also describes that this cosmetic provides line drawing and application performance on skin to which a cream or foundation has been applied. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4020831 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the application performance of this type of cosmetic has not been sufficiently studied, and further improvement is required. More specifically, the tip of the applicator may be clogged with primers such as eyebrow mascara, sebum, etc., which may reduce the application performance of the applicator. Therefore, there is a need for cosmetics that can prevent such a reduction in application performance.

[0006] In view of the above circumstances, an object of the present invention is to provide an eyebrow cosmetic that can suppress a decrease in the application performance of an applicator. [Means for solving the problem]

[0007] The eyebrow cosmetic according to the present invention comprises: Contains water and a surfactant, The surfactant is a polyoxyethylene alkyl ether having an HLB of 12 or more.

[0008] In one embodiment of the eyebrow cosmetic according to the present invention, the polyoxyethylene alkyl ether has an HLB of 15 or less.

[0009] In one embodiment of the eyebrow cosmetic according to the present invention, the content of the polyoxyethylene alkyl ether is 1% by mass or more.

[0010] One embodiment of the eyebrow cosmetic according to the present invention is The water content is 70% by mass or more. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an eyebrow cosmetic that can suppress a decrease in the application performance of an applicator. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an eyebrow cosmetic product according to an embodiment of the present invention will be described.

[0013] The eyebrow cosmetic contains water as the main ingredient, a dye, and a surfactant. The eyebrow cosmetic is used by filling an applicator equipped with a tip having a fiber bundle and a reservoir for the eyebrow cosmetic. The fibers of the fiber bundle are typically synthetic fibers such as polyester fibers, but may also be natural fibers such as animal hair.

[0014] The water is preferably purified water such as distilled water or deionized water. The water content is usually 50% by mass or more, preferably 70% by mass or more, and more preferably 75% by mass or more, based on the mass of the eyebrow cosmetic. The water content is preferably 80% by mass or less.

[0015] The dye is a water-soluble dye that dissolves in the water. Examples of the water-soluble dye include direct dyes, acid dyes, food dyes, and basic dyes. More specifically, the water-soluble dyes include Red No. 120, Yellow No. 4, Yellow No. 5, Red No. 201, Red No. 227, Orange No. 205, Brown No. 210, Red No. 502, Red No. 503, Red No. 504, Red No. 506, Orange No. 402, Yellow No. 402, Yellow No. 406, Yellow No. 407, Red No. 213, Red No. 214, Red No. 3, Red No. 104, Red No. 105 (1), Red No. 106, Green No. 2, and Green No. 3. At least one of the following: Orange No. 207, Yellow No. 202 (1), Yellow No. 202 (2), Blue No. 202, Blue No. 203, Blue No. 205, Blue No. 2, Yellow No. 203, Blue No. 201, Green No. 201, Blue No. 1, Red No. 230 (1), Red No. 231, Red No. 232, Green No. 204, Green No. 205, Red No. 401, Yellow No. 403 (1), Green No. 401, Green No. 402, Black No. 401, Purple No. 401.

[0016] The content of the dye is preferably 0.05% by mass or more and 2% by mass or less, and more preferably 0.5% by mass or more and 1.5% by mass or less, relative to the mass of the eyebrow cosmetic.

[0017] The surfactant is a polyoxyethylene alkyl ether, which is a nonionic surfactant that does not foam as much as other surfactants, and is therefore preferred for use in eyebrow cosmetics.

[0018] The polyoxyethylene alkyl ether has an HLB value of 12 or higher, as determined by the Griffin method. The polyoxyethylene alkyl ether preferably has an HLB value of 13 or higher. Furthermore, the polyoxyethylene alkyl ether preferably has an HLB value of 15 or lower. Such polyoxyethylene alkyl ethers are used in detergents for textile products such as clothing to provide cleaning properties against oil-related stains. The eyebrow cosmetics are thought to exhibit the cleansing effect of the polyoxyethylene alkyl ether. Specifically, this type of cosmetic is used by first applying a primer such as foundation or eyebrow mascara, and then applying the eyebrow cosmetics over the primer. These primers typically contain a large amount of oil, such as vegetable oil. Therefore, when applying the eyebrow cosmetics, the oil from the primer may adhere to the fibers at the tips and clog the fiber bundles. Sebum may also cause clogging of the fiber bundles. In contrast, the eyebrow cosmetic can prevent oil from adhering to the fiber bundles that make up the tip due to the cleansing action of the polyoxyethylene alkyl ether on the fibers, and is thought to be able to prevent a decrease in the application performance of the applicator.

[0019] The polyoxyethylene alkyl ether preferably has an ethylene oxide addition mole number of 7 or more, more preferably 9 or more, and even more preferably 12 or more. Such polyoxyethylene alkyl ethers are highly hydrophilic, and therefore can exhibit high cleansing power even in compositions containing a large amount of water, such as 70% by mass or more. Furthermore, the eyebrow cosmetic, which contains a large amount of water and has high fluidity, can wash away substances such as oil and sebum that have once adhered to the fiber bundle, thereby preventing their adhesion. Furthermore, polyoxyethylene alkyl ethers with a large ethylene oxide addition mole number have the advantage of low skin irritation due to their high molecular weight and low skin permeability.

[0020] Examples of the polyoxyethylene alkyl ether include polyoxyethylene 2-ethylhexyl ether, polyoxyethylene nonyl ether, polyoxyethylene decyl ether, polyoxyethylene isodecyl ether, polyoxyethylene lauryl ether, polyoxyethylene tridecyl ether, etc. Among these, those having an alkyl chain with 10 to 16 carbon atoms are preferred, and those having 12 to 14 carbon atoms are more preferred.

[0021] The content of the polyoxyethylene alkyl ether is preferably 0.2% by mass or more, more preferably 0.4% by mass or more, even more preferably 0.5% by mass or more, even more preferably 0.9% by mass or more, and particularly preferably 1% by mass or more, based on the mass of the eyebrow cosmetic. The content of the polyoxyethylene alkyl ether may be 5% by mass or less, 3% by mass or less, or 2% by mass or less.

[0022] The eyebrow cosmetic preferably further contains a film-forming agent. Examples of the film-forming agent include resin emulsions. Examples of the resin emulsion include acrylic resin emulsions, vinyl acetate-acrylic resin emulsions, styrene-acrylic resin emulsions, alkyd resin emulsions, and urethane resin emulsions. Among these, salts of the acrylic resin emulsions or salts of the styrene-acrylic resin emulsions are preferred, with ammonium salts of alkyl acrylate copolymers and ammonium salts of acrylic acid-styrene copolymers being more preferred. Water-resistant resin emulsions such as ammonium salts of alkyl acrylate copolymers facilitate adhesion of the eyebrow cosmetic to the skin. Additionally, unintended leakage of the eyebrow cosmetic from the tip can be prevented.

[0023] The content (solid content) of the resin emulsion is preferably 1% by mass or more and 10% by mass or less, more preferably 5% by mass or more and 10% by mass or less, relative to the mass of the eyebrow cosmetic, which can improve the fixation of the eyebrow cosmetic and suppress tightness on the skin.

[0024] The eyebrow cosmetic preferably further contains a moisturizing agent. Examples of the moisturizing agent include polyhydric alcohols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, glycerin, diglycerin, and polyglycerin. The content of the moisturizing agent is, for example, 1% by mass or more and 5% by mass or less of the total mass of the eyebrow cosmetic.

[0025] The eyebrow cosmetic may contain other additives, such as preservatives.

[0026] Although the embodiments have been shown as examples, the eyebrow cosmetics according to the present invention are not limited to the configurations of the above-described embodiments. Furthermore, the eyebrow cosmetics according to the present invention are not limited by the above-described effects. The eyebrow cosmetics according to the present invention can be modified in various ways without departing from the gist of the present invention. [Example]

[0027] The present invention will be further explained below with reference to examples, but the present invention is not limited to these examples.

[0028] [Raw materials used] (surfactant) Polyoxyethylene alkyl ether (Sanyo Chemical Industries, Ltd., Sannonic SS-120, HLB 14.5, alkyl chain carbon number: 12-14) Polyoxyethylene alkyl ether (Sanyo Chemical Industries, Ltd., Sannonic SS-90, HLB 13.2, alkyl chain carbon number: 12-14) Polyoxyethylene alkyl ether (Sanyo Chemical Industries, Ltd., Sannonic SS-70, HLB 12.0, alkyl chain carbon number: 12-14) Polyether-modified polydimethylsiloxane (BYK-333, HLB 10.1, manufactured by BYK-Chemie) Sodium dilauramidoglutamide lysine (Pellicer L-30, an anionic surfactant, manufactured by Asahi Kasei Finechem Co., Ltd.) (Film-forming agent) Ammonium salt of acrylic acid styrene copolymer (Plussize L-717EM, manufactured by Goo Chemical Industry Co., Ltd., solids concentration 40% by mass) (moisturizer) 1,3-butylene glycol (preservatives) Phenoxyethanol (MICROCARE PE, manufactured by So Japan Co., Ltd.)

[0029] The components shown in Tables 1 and 2 were mixed to prepare eyebrow cosmetics.

[0030] [Evaluation method] After applying caprylic / caprylic triglyceride (M Fine Oil CCT-1) to nitrile gloves, face powder was applied to create a writing target. Using each eyebrow cosmetic, 30 lines of approximately 1 cm each were written on the writing target from the bottom left to the top right. The color of the written lines was evaluated according to the following evaluation criteria. The results are shown in Tables 1 and 2. (Evaluation criteria) ◎: Writes lines with good color that do not rub off. ○: No rubbing, but the writing lines are slightly less colorful. △: The writing lines are slightly worn. ×: Scratched and unable to write.

[0031] [Table 1]

[0032] Table 1 allows us to compare the merits and demerits of different surfactant types. It can be seen that eyebrow cosmetics containing polyoxyethylene alkyl ethers with an HLB of 12 or higher are effective.

[0033] [Table 2]

[0034] From Table 2, it can be seen that eyebrow cosmetics containing polyoxyethylene alkyl ethers with an HLB of 13 or more are even more effective.

Claims

1. Contains water and a surfactant, The cosmetic for eyebrows, wherein the surfactant is a polyoxyethylene alkyl ether having an HLB of 12 or more.

2. 2. The eyebrow cosmetic according to claim 1, wherein the polyoxyethylene alkyl ether has an HLB of 15 or less.

3. The eyebrow cosmetic according to claim 1 or 2, wherein the content of the polyoxyethylene alkyl ether is 1% by mass or more.

4. The eyebrow cosmetic according to claim 1 or 2, wherein the water content is 70% by mass or more.

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