Hair dye composition

Abstract

To provide a hair dying composition having excellent dyeability.SOLUTION: A hair dying composition contains an acidic dye, mono-saturated alkyl glyceryl ether, and cyclic carbonate.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair dye composition that is used, for example, to dye body hair or scalp hair. [Background technology]

[0002] BACKGROUND ART Hair dye compositions for dyeing body or head hair to a desired color have been known in the art. These hair dye compositions contain, for example, an acid dye as a dyeing agent.

[0003] Known examples of this type of hair dye composition include an acid dye, a glyceryl ether compound as a penetration enhancer, and glycolic acid as a softening agent, in which the glyceryl ether compound is monopropyl glyceryl ether or the like, and the content of the glyceryl ether compound is 0.1% by mass or more and 50% by mass or less (for example, Patent Document 1). The hair dye composition described in Patent Document 1 has fairly good dyeing power. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-172134 Summary of the Invention [Problem to be solved by the invention]

[0005] However, hair dye compositions having good dyeing properties have not yet been sufficiently investigated.

[0006] Therefore, an object of the present invention is to provide a hair dye composition having good dyeing performance. [Means for solving the problem]

[0007] The hair dye composition according to the present invention is characterized by containing an acid dye, a monosaturated alkyl glyceryl ether, and a cyclic carbonate.

[0008] The above hair dye composition preferably further contains cellulose fibers. [Effects of the Invention]

[0009] The hair dye composition of the present invention has good dyeing performance. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of the hair dye composition according to the present invention will be described.

[0011] The hair dye composition of this embodiment contains an acid dye (A), a monosaturated alkyl glyceryl ether (B), and a cyclic carbonate (C). The hair dye composition of this embodiment preferably further contains cellulose fibers (D). The hair dye composition of this embodiment usually contains water. The hair dye composition of the present embodiment can exhibit good dyeing performance on body hair or human hair.

[0012] The acid dye (A) is not particularly limited as long as it is an acid dye that can be blended into general cosmetics. The acid dye (A) is a compound that does not have the reactivity to form new covalent bonds and can develop color by itself. The acid dye (A) may be one having an anionic hydrophilic group in the molecule. Specific examples include nitro dyes, azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes, anthraquinone dyes, and indigo dyes. More specific examples include Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 201, Red No. 227, Red No. 230 (1), Red No. 230 (2), Red No. 231, Red No. 232, Red No. 401, Red No. 502, Red No. 503, Red No. 504, Red No. 506, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), and Yellow No. 202. Examples of suitable acid dyes include No. 203, No. 402, No. 403-(1), No. 406, No. 407, No. 205, No. 207, No. 402, No. 301, No. 302, No. 303, No. 304, No. 305, No. 301, No. 302, No. 303, No. 304, No. 305, No. 301, No. 302, No. 303, No. 304, No. 305, No. 301, No. 302, No. 303, No. 305, No. 303, No. 305, No. 304, No. 305, No. 305, No. 306, No. 307, No. 308, No. 309, No. 310, No. 311, No. 312, No. 313, No. 314, No. 315, No. 316, No. 317, No. 318, No. 319 ...

[0013] The above hair dye composition may contain one acid dye (A) alone or a combination of two or more acid dyes (A).

[0014] The hair dye composition of the present embodiment preferably contains an acid dye in a total amount of 0.01% by mass or more, more preferably 0.10% by mass or more, and even more preferably 0.50% by mass or more, which allows the hair dye composition of the present embodiment to have better dyeing performance. The hair dye composition of the present embodiment preferably contains an acid dye in a total amount of 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less, which allows the acid dye to be more reliably dissolved in the hair dye composition of the present embodiment.

[0015] Monosaturated alkyl glyceryl ether (also known as glycerin monosaturated alkyl ether) has a molecular structure in which a monohydric saturated alkyl alcohol is ether-bonded to a terminal hydroxy group of glycerin. The monohydric saturated alkyl alcohol may be a linear monohydric saturated alkyl alcohol, a branched monohydric saturated alkyl alcohol, or a cyclic monohydric saturated alkyl alcohol. In other words, the saturated alkyl portion of the monosaturated alkyl glyceryl ether may be any saturated hydrocarbon, such as a linear saturated hydrocarbon, a branched saturated hydrocarbon, or a saturated cyclic hydrocarbon.

[0016] The total number of carbon atoms in the monosaturated alkyl glyceryl ether (B) may be 8 or more and 15 or less, or 7 or more and 11 or less. Examples of the mono-saturated alkyl glyceryl ether (B) include 1-n-hexyl glyceryl ether, 1-cyclohexyl glyceryl ether, 1-heptyl glyceryl ether, 1-(2-ethylhexyl) glyceryl ether (also known as glycerin mono-2-ethylhexyl ether), 1-octyl glyceryl ether, 1-decyl glyceryl ether, and 1-dodecyl glyceryl ether. Among these, 1-(2-ethylhexyl) glyceryl ether (also known as glycerin mono-2-ethylhexyl ether) is preferred. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0017] The above-mentioned hair dye composition may contain one monosaturated alkyl glyceryl ether (B) alone or a combination of two or more monosaturated alkyl glyceryl ethers (B).

[0018] The hair dye composition of the present embodiment preferably contains 0.01% by mass or more, more preferably 0.10% by mass or more, and even more preferably 0.50% by mass or more of the monosaturated alkyl glyceryl ether (B), which allows the hair dye composition of the present embodiment to exhibit better dyeing performance (hair dyeing performance). Furthermore, the hair dye composition of this embodiment preferably contains 20% by mass or less of the mono-saturated alkyl glyceryl ether (B), more preferably 15% by mass or less, and even more preferably 10% by mass or less. This can further enhance the safety of the hair dye composition of this embodiment. Furthermore, dyeing performance can be achieved without blending more mono-saturated alkyl glyceryl ether (B) than necessary into the hair dye composition.

[0019] The cyclic carbonate (C) is an ester of an alkylene diol and carbonic acid and has a cyclic structure. Examples of alkylene glycols before esterification include ethylene glycol, propylene glycol, and butylene glycol. The total number of carbon atoms in the cyclic carbonate (C) is usually 3 or more and 5 or less.

[0020] Examples of the cyclic carbonate (C) include ethylene carbonate, propylene carbonate, and butylene carbonate (4-ethyl-1,3-dioxolan-2-one). Propylene carbonate is preferred as the cyclic carbonate (C). This allows the hair dye composition of this embodiment to have better dyeing performance.

[0021] The above hair dye composition may contain one type of cyclic carbonate (C) alone or a combination of two or more types.

[0022] The hair dye composition of the present embodiment preferably contains 0.1% by mass or more of the cyclic carbonate (C), more preferably 1.0% by mass or more, and even more preferably 5.0% by mass or more, which allows the hair dye composition of the present embodiment to have better dyeing performance. The hair dye composition of this embodiment preferably contains 30% by mass or less of the cyclic carbonate (C), more preferably 25% by mass or less, and even more preferably 20% by mass or less. This can further enhance the safety of the hair dye composition of this embodiment. Furthermore, dyeing performance can be achieved without blending more monosaturated alkyl glyceryl ether (B) than necessary into the hair dye composition.

[0023] The cellulose fiber (D) includes a fibrous material formed from cellulose. Such a fibrous material is usually water-insoluble and can be dispersed in a solvent containing water. The cellulose fiber (D) is formed from a plurality of fibrous materials, and in each fibrous material, a plurality of bundled sugar chains extend in the fiber length direction of the fibrous material. The thickness of each fibrous material is usually 0.001 μm (1 nm) or more and 10 μm or less. The thickness of each fibrous material may be less than 1 μm (less than 1000 nm), 500 nm or less, or 300 nm or less.

[0024] The cellulose fibers (D) can be obtained, for example, from wood pulp. The cellulose fibers can be obtained, for example, by subjecting wood pulp to mechanical or chemical treatment to defibration. Examples of mechanical treatment methods include a high-pressure homogenizer method, a microfluidizer method, and a ball mill grinding method. Examples of chemical treatment methods include a TEMPO oxidation method, a carboxymethylation method, and a phosphoric acid esterification method. The cellulose fibers may be those in which a portion of the cellulose molecules has been chemically modified and then mechanically defibrated.

[0025] As the cellulose fiber (D), commercially available products can be used. Examples of commercially available products containing cellulose fiber include "Leocrysta" (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), "Cellenpia Series" (manufactured by Nippon Paper Industries Co., Ltd.), "ELLEX Series" (manufactured by Daio Paper Corporation), and "AUROVISCO Series" (manufactured by Oji Holdings Co., Ltd.).

[0026] The hair dye composition of this embodiment preferably contains 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1.0% by mass or more of cellulose fibers (D) in terms of solids. This allows the hair dye composition of this embodiment to have better dyeing performance. In addition, the hair dye composition of this embodiment can have higher formulation stability and moderate viscosity. Furthermore, the hair dye composition of this embodiment preferably contains 7.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 3.0% by mass or less of cellulose fibers (D) in terms of solids. This allows for better dispersion of the cellulose fibers in the hair dye composition of this embodiment. It also prevents the viscosity of the hair dye composition from becoming too high. Therefore, the hair dye composition of this embodiment can exhibit better dyeing performance.

[0027] In the hair dye composition of this embodiment, the mass ratio of the monosaturated alkyl glyceryl ether (B) to the total amount of the acid dye (A) is preferably 0.1 or more, more preferably 1.0 or more, and even more preferably 3.0 or more. Furthermore, this mass ratio is preferably 10.0 or less, more preferably 5.0 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0028] In the hair dye composition of this embodiment, the mass ratio of the cyclic carbonate (C) to the total amount of the acid dye (A) is preferably 0.1 or more, more preferably 1.0 or more, and even more preferably 3.0 or more. Furthermore, this mass ratio is preferably 20.0 or less, more preferably 15.0 or less, and even more preferably 10.0 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0029] In the hair dye composition of this embodiment, the mass ratio of the cellulose fiber (D) to the total amount of the acid dye (A) is preferably 0.5 or more, more preferably 1.0 or more, calculated on solids. Furthermore, this mass ratio is preferably 5.0 or less, more preferably 3.0 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0030] In the hair dye composition of this embodiment, the mass ratio of the cyclic carbonate (C) to the monosaturated alkyl glyceryl ether (B) is preferably 0.02 or more, more preferably 0.2 or more, and even more preferably 0.5 or more. Furthermore, this mass ratio is preferably 50.0 or less, more preferably 15.0 or less, even more preferably 4.0 or less, and particularly preferably 2.0 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0031] In the hair dye composition of this embodiment, the mass ratio of the cellulose fiber (D) to the monosaturated alkyl glyceryl ether (B) is preferably 0.02 or more, more preferably 0.10 or more, and even more preferably 0.20 or more, calculated on a solid basis. Furthermore, this mass ratio is preferably 15 or less, more preferably 1.5 or less, and even more preferably 0.6 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0032] In the hair dye composition of this embodiment, the mass ratio of the cellulose fiber (D) to the cyclic carbonate (C) is preferably 0.02 or more, more preferably 0.20 or more, and even more preferably 0.10 or more, calculated on a solid basis. Furthermore, this mass ratio is preferably 15.0 or less, more preferably 1.5 or less, and even more preferably 0.6 or less. This allows the hair dye composition of this embodiment to have better dyeing performance.

[0033] The hair dye composition may further contain a pH adjuster, a surfactant, an antioxidant, a thickener, a preservative, and the like. The hair dye composition is preferably acidic, and more preferably has a pH of 2 or more and 4 or less. When the hair dye composition is acidic, the acid dye is more easily adsorbed onto protein-containing hair, and the hair dyeing performance can be better exhibited.

[0034] The properties and appearance of the hair dye composition of this embodiment are not particularly limited. The hair dye composition of this embodiment may be, for example, a liquid, semi-solid (gel, cream, etc.), or solid (powder, tablet, sheet, etc.). The hair dye composition of this embodiment may be contained in the contents of an aerosol product.

[0035] The hair dye composition of this embodiment is used by being applied to, for example, body hair or scalp hair. The hair dye composition is used by being applied to, for example, body hair such as eyebrows, eyelashes, beards (mouth whiskers, beard, sideburns), armpit hair, chest hair, and pubic hair. The hair dye composition is also used by being applied to, for example, scalp hair. The hair dye composition of this embodiment may be incorporated into a patch for use. The hair dye composition is not particularly restricted by classification as a cosmetic, quasi-drug, or pharmaceutical product under the Pharmaceutical and Medical Device Act, and is applicable to several fields.

[0036] The hair dye composition of the present embodiment is preferably used by applying it to eyebrows. In other words, the hair dye composition of the present embodiment is preferably used for application to eyebrows. The hair dye composition of the present embodiment, which is designed to have a desired color, can be applied to eyebrows to dye them in a desired color, and can therefore be used, for example, for eyebrow makeup. It can also be used, for example, for dyeing gray eyebrows. When conventional eyebrow cosmetics (eyebrow mascara, powder, etc.) are applied to the eyebrows, the color tends to fade after cleansing or washing the face, but by dyeing the eyebrows with the hair dye composition of this embodiment, the color of the eyebrows can be maintained even after cleansing or washing the face. Therefore, when used to dye gray eyebrows, the gray hairs in the eyebrows can be prevented from becoming noticeable even after the passage of days.

[0037] The hair dye composition of the present embodiment is used, for example, as follows. For example, the hair dye composition is applied to hair (body hair or scalp hair, etc.) using a brush or the like and left for a certain period of time. The hair dye composition is then rinsed off with water or lukewarm water, and the hair is dried. While the hair is dyed by performing this procedure once, repeating the procedure multiple times allows the acid dye to accumulate in the hair, thereby achieving even higher dyeing performance.

[0038] The hair dye composition of the present invention is as exemplified above, but the present invention is not limited to the above-exemplified embodiments. In addition, in the present invention, various forms adopted in general hair dye compositions, cosmetics, pharmaceuticals, etc. can be adopted within a range that does not impair the effects of the present invention. [Example]

[0039] The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0040] Hair dye compositions of Examples and Comparative Examples were produced as follows, and performance evaluations were carried out for each hair dye composition.

[0041] <Details of ingredients in hair dye composition> (A) Acidic dye A mixture of Orange No. 205, Purple No. 401, and Black No. 401 (B) Monosaturated alkyl glyceryl ether (B-1) Mono 2-ethylhexylglyceryl ether (also known as ethylhexylglycerin) Total carbon number: 11 (commercially available) (B-2) Mono-n-hexylglyceryl ether Total carbon number: 9 (commercially available, manufactured by ADEKA) (B-3) Monocyclohexylglyceryl ether Total carbon number: 9 (commercially available, manufactured by ADEKA) (C) Cyclic carbonate (C-1) Propylene carbonate (commercially available) (C-2) Ethylene carbonate (commercially available) (D) Cellulose fiber Cellulose fiber powder, product name "Cellenpia CS-01C" (manufactured by Nippon Paper Industries Co., Ltd.) Fiber diameter: Approximately 1 nm to 500 nm

[0042] ( reference Example 1-1 6) / Example 17) / (Comparative Examples 1 to 5) Each composition was produced according to the blending ratio shown in Tables 1 to 4. Specifically, each composition was produced by mixing the blending components and stirring them in a homodisper at 1,000 rpm for approximately 2 minutes. The cellulose fiber powder was thoroughly dispersed in water before blending.

[0043] [Table 1]

[0044] [Table 2]

[0045] [Table 3]

[0046] [Table 4]

[0047] <Evaluation of dyeing performance (hair dyeing performance)> The dyeing performance on hair was evaluated as follows. 1. 1 g of each hair dye composition was applied to goat hair (10 cm 1 g for hair color evaluation, manufactured by Staffs Co., Ltd.) and left for 10 minutes. 2. The goat hair was washed with tap water and then dried with a hair dryer. 3. The L*a*b* values ​​of the dyed goat hair were measured using a colorimeter. The lower the L* value (lightness), the better the dyeing (darker the dyeing). The results are shown in Table 1. The above-mentioned goat hair is commonly used when evaluating dyeing performance on human hair.

[0048] As shown in Tables 1 to 4, good dyeing performance was achieved by combining an acid dye, a monosaturated alkyl glyceryl ether, and a cyclic carbonate. Furthermore, even better dyeing performance was achieved by combining an acid dye, glycerin mono-2-ethylhexyl ether, and propylene carbonate. Furthermore, even better dyeing performance was achieved by combining cellulose fibers. By incorporating a monosaturated alkyl glyceryl ether and a cyclic carbonate into the hair dye composition in addition to the acid dye, the penetration of the acid dye into the hair can be promoted. Furthermore, by incorporating cellulose fibers into the hair dye composition, the dyeing performance of the acid dye on hair can be further improved. Furthermore, the high thixotropy of cellulose fibers temporarily reduces the viscosity of the hair dye composition during application, making it easy to spread and apply. After application, the viscosity of the hair dye composition recovers and increases, making it less likely for the applied hair dye composition to drip from the hair. Cellulose fibers can impart these properties to the hair dye composition.

[0049] As described above, the hair dye compositions of the examples contained an acid dye, a monosaturated alkyl glyceryl ether, and a cyclic carbonate, and therefore had good dyeing performance for body hair or scalp hair. The dyeing performance was further improved by further blending cellulose fiber. [Industrial Applicability]

[0050] The hair dye composition of the present invention is used by being applied to body hair or scalp hair, for example, to dye body hair such as eyebrows and eyelashes to a desired color, or to dye scalp hair to a desired color.

Claims

1. A hair dye composition comprising an acid dye, mono-2-ethylhexylglyceryl ether, ethylene carbonate, and cellulose fibers that have been chemically treated by a carboxymethylation method.

2. A hair dye composition as described in claim 1, wherein the thickness of each fibrous substance contained in the cellulose fiber is 1 nm or more and 10 μm or less.

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