JP7184848B2 - Nail dyeing composition and nail dyeing method - Google Patents

Description

The present invention relates to a nail dyeing composition that is applied to the nail to dye the nail itself. More particularly, it relates to a nail dyeing composition which is applied on the nail, dried, and then the nail is dyed by removing the film formed on the nail.

Dyeing has been a common method of applying nail makeup since ancient times. For example, nail dyeing using phoenix or safflower is an example. The phoenix flower is also known as nail red and is known to dye nails red. Furthermore, it is also known that in the Edo period, people began to dye their nails using red made from safflower. However, at that time, nail dyeing was very time-consuming, and solvent-based manicure, which was introduced from overseas after the Meiji period, became popular, so it became obsolete.

At present, as a nail make-up agent, solvent-based nail polish (nail polish), which is obtained by coloring a synthetic resin such as an acrylic resin or nitrocellulose with a pigment and diluting it with an organic solvent, is the most common. It is applied to the nail with a brush or the like, and the solvent evaporates to form a highly glossy film on the nail. However, since it contains a large amount of organic solvents such as ethyl acetate and acetone, it gives off a pungent odor during use and drying, so there are usability problems such as the need for good ventilation during use. In general solvent-based nail polishes, the film formed when the surface dries prevents the volatile organic solvent from evaporating, so it may take a long time to dry. If it takes a long time to dry, it may come into contact with other objects during drying and peel off or become twisted. Furthermore, the organic pigment used dissolves in an organic solvent and diffuses, infiltrates, and is fixed in the upper layer of the nail, which is lipophilic. reach. When the pigment reaches the inside of the nail tissue, the metabolism of the nail only occurs in the direction of elongation. Therefore, it takes a long time for the coloring to disappear, resulting in pigmentation, which is regarded as a serious problem. In addition, since the organic solvent is in contact with the nails for a long time, the nails are likely to be damaged. Furthermore, the film once formed cannot be easily removed, and must be removed with a nail polish remover containing a large amount of organic solvent such as acetone. These organic solvents degrease the oil in the tissue of the nail and damage the nail, leading to split nails, cracks, and yellowing of the nail.

On the other hand, gel nails, which are mainly applied at nail salons and the like, have become popular in recent years. The main ingredients used in gel nails are monomers/oligomers, photopolymerization initiators, antioxidants, etc. Gel-like acrylic synthetic resins are exposed to UV light (ultraviolet A wave) and LED light (ultraviolet rays/ visible light) to form a plastic film on the nail. Gel nails cure in a short time compared to solvent-based nail polish, but once a hard film is formed, it cannot be easily removed. Since it is necessary to scrape and remove the nail with such as, there is a problem that the nail is greatly damaged. Furthermore, it is known that even gel nails cause pigmentation on the nails.

In hopes of solving the problem of solvent-based nail polish and gel nails, which is damage to nails, the development of water-based nail polish that does not use organic solvents is underway. A makeup method using a water-based nail polish forms a colored film on the nail. After use, the film can be removed by removing it with water or hot water, or by peeling it off with a finger, and the water-based nail polish color does not remain on the nail after the film is removed.

Patent Literature 1 exemplifies a water-based nail polish containing Red No. 106 and a film-based formulation. The water-based nail polish described in Patent Document 1 is a composition that satisfies water resistance that does not impair the beauty of the nail polish film, and does not require a nail polish remover made of an organic solvent when removing the nail polish film. It is described as a manicure that can be removed with a nail polish and is good for nail health. Therefore, since Patent Document 1 describes a water-removable composition, the colorant used is believed to be Red No. 106 Aluminum Lake that has been laked and pigmented. This is because if Red No. 106, which is a dye that is not in the form of a lake, is blended, the nail itself will be dyed and cannot be removed with water. In other words, the water-based manicure of Patent Document 1 is nothing more than a colored film adhering to the nail, and the color is completely removed when the film is removed. In addition, although the film-forming agent used has water resistance, it is not a component that provides sufficient film strength.

From the above, it has not been possible to realize a nail dyeing composition that does not cause pigmentation, which is a problem in solvent-based nail polish and gel nails, causes less damage to nails, dries quickly, and has good usability. .

JP-A-09-095423

The present invention has been made in view of the above-mentioned prior art, and is a type of nail that dyes the nail itself with good usability without causing pigmentation or damage to the nail, which are the problems of solvent-based nail polish and gel nails. An object of the present invention is to provide a dyeing composition.

As a result of intensive studies aimed at solving the above problems, it was found that a nail dyeing composition containing specific components (A) to (D) satisfies all of the above problems.

The nail dyeing composition of the present invention can provide a new cosmetic method in which the nail is dyed by removing the film formed on the nail after applying it to the nail and drying it. In particular, it has the effect of not causing pigmentation on the nail, and the quick-drying film dyes only the contact portion between the film and the nail, thereby protecting the nail and coloring the nail itself with a natural luster. In addition, since no organic solvent which is unfavorable for health is used, there is no damage to nails during use, and the use of an easily peelable film has the effect of causing no damage to nails during removal.

The present invention will be described in more detail below. In addition, unless there is a special comment, when displaying the compounding quantity of a component below with "%", it means the mass %.

The principle of the cosmetic method using the nail dyeing composition of the present invention is that when the composition is applied to the nail and dried, a film containing the dye remains on the nail surface, and when the film is removed, the nail is dyed. It is said that it is in a state. At the bottom layer of the coating, the dye is in contact with the nail and stains the nail only where it contacts. The dye used has a low lipophilicity, whereas the surface layer of the nail has a high lipophilicity, which means that the dye has a low affinity for the nail, so the nail is limited to staining the very surface and prevents the dye from diffusing into the nail. be able to. In addition, since the drying time of the film is short, the dye in the film cannot move immediately, which also brings about the feature that the dye is less likely to diffuse into the nail. As described above, according to the present invention, since the pigment disappears in a relatively short period of time, in most cases, within several days, there is an advantage that pigmentation does not occur.

Since the nail dyeing composition of the present invention naturally removes the coloration when left alone, it does not require a removal method using a nail polish remover or a file compared to solvent-based nail polish or nail gel nails. less of a burden. Furthermore, since the nail dyeing composition of the present invention colors the nail itself, it does not cause damage to the appearance due to peeling or twisting, which is a problem with water-based nail polish.

The nail dyeing composition of the present invention is different from conventional manicures in which a colored film is fixed on the nail. By specializing in , it became easy to remove after dyeing.

The component (A) used in the present invention may be a water- or alcohol-soluble dye that can be incorporated into cosmetics. However, organic dyes that have been made insoluble in water or alcohol by a treatment such as lake formation exhibit the same behavior as pigments, and are not included in the component (A). Component (A) can be used from those listed as legal dyes according to, for example, the "Ministerial Ordinance Determining Tar Colors Usable in Pharmaceutical Products". In the present invention, "having solubility" refers to having a solubility of 1% or more in the target solvent.

Although component (A) is not particularly limited, specifically, dyes capable of dyeing keratin are preferred. For example, Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 106, Red No. 201, Red No. 218, Red No. 223, Red No. 227, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Blue No. 1, Blue No. 2, Blue No. 202, Orange No. 205, Orange No. 207, Green No. 3, Green No. 204, Green No. 205, and the like. Among these, fluorescein dyes having solubility in ethanol are preferred, and Red No. 218 and Red No. 223 are particularly preferred.

The amount of component (A) to be blended is in the range of 0.005 to 1.0% by mass, particularly preferably 0.01 to 0.5% by mass, based on the total amount of the composition. By blending in this range, it is possible to develop a color with an appropriate density and maintain it for an appropriate period of time.

Component (A) can be used singly or in any combination of two or more thereof in order to provide a desired tint.

Component (B) used in the present invention is a compound having a hydroxyl group attached to a carbon atom in the side chain of an aromatic compound, and has high solvent performance and affinity for water. In the present invention, the component (B) has effects such as improving the affinity of the component (A) for the nails, making the nails easier to dye, and prolonging the coloring time of the nails.

Component (B) is not particularly limited, but examples include benzyl alcohol, 2-phenylethyl alcohol, cinnamic alcohol, phenylpropanol, α-methylbenzyl alcohol, 2-benzyloxyethanol, phenoxyethanol, phenethyl alcohol, and the like. Among these, benzyl alcohol and phenoxyethanol are preferred, and benzyl alcohol is particularly preferred.

Although the amount of component (B) to be blended is not particularly limited, it is preferably in the range of 1 to 20% by mass, particularly preferably in the range of 2 to 10% by mass, based on the total amount of the composition. By blending in this range, the pigment can be fixed to the nail, and the nail can be colored continuously.

Component (B) can also be used singly or in any combination of two or more.

The aqueous film-forming agent of component (C) used in the present invention is a film-forming agent having affinity for water,
Component (C-1): Water-soluble film-forming agent Component (C-2): Water-dispersible film-forming agent.

Component (C-1), a "water-soluble film-forming agent that dissolves in water", can be uniformly applied by dissolving it in water, and after water and other water-soluble volatile solvents evaporate, a transparent It has the property of forming a uniform coating with Since it is originally soluble in water, it can be easily removed by using water or hot water. Furthermore, it is also possible to form a coating that is stretchable and easy to peel off.

Although component (C-1) is not particularly limited, specifically, polyvinyl alcohol, polyvinylpyrrolidone, hydroxyethylcellulose, hydroxypropylmethylcellulose and the like are preferably used.

The amount of component (C-1) is not particularly limited, but the pure content of the film-forming agent is preferably in the range of 5 to 30% by mass, particularly preferably 10 to 20% by mass, based on the total amount of the composition. By blending it in this range, it is possible to obtain an appropriate viscosity, and it is possible to obtain the effect that it is easy to apply without dripping on the finger when applying it to the nail.

Component (C-2), the "water-dispersible film-forming agent", is commercially available as a white film-forming agent dispersion liquid obtained by emulsion polymerization of a monomer such as acrylic acid or styrene. Its characteristic is that the film-forming agent itself has a low water solubility, so that it forms a hydrophobic film when water and other volatile solvents evaporate. In particular, by using a resin emulsion with high strength, it becomes possible to maintain the coating for several days after coating.

Component (C-2) is not particularly limited, but specific examples include alkyl acrylate polymers, alkyl methacrylate polymers, styrene/alkyl acrylate copolymers, and styrene/alkyl methacrylate copolymers. , vinylpyrrolidone/styrene copolymer, vinyl acetate polymer, alkyl acrylate/vinyl acetate copolymer, alkyl methacrylate/vinyl acetate copolymer, acrylic acid/alkyl acrylate copolymer, alkyl acrylate/methacrylate Copolymers, methacrylic acid/alkyl acrylate copolymers, methacrylic acid/alkyl methacrylate copolymers, and the like can be mentioned. The polymers and copolymers used in the present specification are, for example, alkyl (meth)acrylate (co)polymers, which refer to polymers and copolymers containing alkyl acrylate or alkyl methacrylate as monomer constituent units. A styrene (co)polymer refers to a polymer or copolymer containing styrene as a monomer constitutional unit.

The amount of component (C-2) to be blended is not particularly limited, but the pure content of the film-forming agent is preferably in the range of 20 to 50% by mass, particularly preferably 25 to 45% by mass, based on the total amount of the composition. By blending in this range, the film is fixed on the nail, and the effect of realizing the formation of a film with appropriate hardness and thickness is also obtained.

Component (C) can be used alone or in any combination of two or more. By changing the type and combination of monomers, the degree of polymerization, etc., the hardness, deformability, and film-forming temperature of the film can be changed. etc. can be adjusted. It is also possible to use both a water-soluble film-forming agent and a water-dispersible water-based film-forming agent by setting the time for fixing the film on the nail.

As component (D) water used in the present invention, purified water, distilled water, clean water and the like can be used. It is used as a solvent to dissolve pigments and to stably mix pigments. It has good compatibility with other ingredients blended, and tends to form a uniform composition. In addition, the low viscosity makes it easy to apply and achieves a uniform finish. Furthermore, since it evaporates, the formation of the film is not hindered, so the usability is good. The blending amount is not particularly limited as long as it is an amount capable of dissolving other components.

Component (E) ethanol used in the present invention is a colorless, volatile and combustible liquid with a characteristic aroma. Industrially, it can be obtained, for example, by alcohol fermentation from starch or molasses, or by synthesis from ethylene. Component (E) in the present invention utilizes high solvent capacity to stabilize the composition. In addition, since it evaporates easily, a film is formed in a short time, which improves usability. Furthermore, by blending more than a certain amount, the storage stability can be improved due to the antibacterial effect.

The blending amount of component (E) ethanol is not particularly limited, but is preferably in the range of 5 to 30% by mass, particularly preferably 10 to 20% by mass, based on the total amount of the composition. Blending within this range ensures the uniformity of the composition. In addition, because of its high volatility, it is possible to form a film that dries quickly.

When using the nail dyeing composition of the present invention, for example, it is applied directly to the nail using a brush and left to dry. After drying, it can be confirmed that a flexible resin film covers the nail. The resin film can be easily removed without using an organic solvent or the like by removing it with water or hot water or peeling it off with a finger. At this time, the nail itself from which the film has been removed is sufficiently dyed. In addition, since only the surface of the nail is dyed, it has the advantage of not causing pigmentation.

The present invention will be described in more detail below with reference to Examples, but these are not intended to limit the present invention in any way.

<Experiment 1: Performance comparison with conventional products>
The formulations shown in Table 1 below were prepared, and Example 1 (product of the present invention), Comparative Example 1 (water-based nail polish), and Comparative Example 2 (solvent-based nail polish) were compared in each evaluation item. Table 1 shows the results. Each evaluation was performed by 10 professional panelists who were women in their 20s to 40s who had undergone sensory evaluation training, and the numerical values were calculated as the average values of the responses of each panelist.

(Manufacturing method: Example 1)
(D) Polyvinyl alcohol (C) was heated and dissolved in water, and after cooling to room temperature, (C) alkyl acrylate/styrene copolymer emulsion was mixed to form a water phase. After (A) Red No. 218 and diglyceryl triisostearate were added to (B) benzyl alcohol, (E) ethanol and other components were dissolved to form an ethanol phase. The ethanol phase was added to the aqueous phase and mixed to obtain the nail dyeing composition of the present invention.

(Manufacturing method: Comparative Example 1)
(D) Polyvinyl alcohol (C) was heated and dissolved in water, and after cooling to room temperature, (C) alkyl acrylate/styrene copolymer emulsion was mixed to form a water phase. (A') Red No. 202 and diglyceryl triisostearate were previously subjected to a roller treatment. To (B) benzyl alcohol, (A′) Red No. 202 and diglyceryl triisostearate, which had been subjected to roller treatment in advance, were added, and then (E) ethanol and other components were dissolved to form an ethanol phase. The ethanol phase was added to the aqueous phase and mixed to obtain a water-based nail polish.

(Manufacturing method: Comparative Example 2)
After dissolving resins in an organic solvent and dispersing the pigment, a disper was used to uniformly disperse the pigment. Then, a thickener was added and dispersed by a disper to obtain a solvent-based nail polish.

(Evaluation method: Evaluation of time until drying)
The time required for drying after application, which is considered important in terms of convenience during use, was evaluated. After an appropriate amount of the sample was applied to the nail with a brush, the time until the color stopped being applied even when pressed with tissue paper was measured.

[Criteria for evaluation of time until drying]
Evaluation was carried out on a 3-grade scale in the following evaluation, and judgment was made.
(judgment): (score)
◎: 5 minutes or more and less than 10 minutes ○: 10 minutes or more and less than 15 minutes ×: 15 minutes or more

(Evaluation method: evaluation of changes in appearance)
A special panelist actually used each sample and evaluated the change in appearance. After applying an appropriate amount of the sample to the nail with a brush, changes in the appearance of the nail were observed according to the characteristics of each sample, and the period until the appearance changed was measured. Specifically, in Example 1, immediately after the film was dried and formed, the nail was soaked in hot water at 40°C to remove the film, and the appearance of the nail was evaluated until the coloration of the nail disappeared. . For Comparative Example 1 (water-based nail polish) and Comparative Example 2 (solvent-based nail polish), changes in the appearance of the coating were observed when the colored coating was dried. In both experiments, the subjects were asked to carry out daily activities, including normal hand washing and simple washing work, during the period of use. The hot water used hereafter refers to hot water of about 40°C.

[Appearance change evaluation criteria]
It was judged by the following evaluation.
◯: After 1 day from the start, the beautiful appearance of coloring and uniform coating was maintained.
x: After 1 day from the start, it was not possible to maintain the beautiful appearance of the coloring and uniform coating.

(Evaluation method: nail damage evaluation)
After applying an appropriate amount of each sample to the nail with a brush, the film was removed according to the properties of each sample. In Example 1, the coating was removed by soaking in hot water immediately after drying to form the coating. Comparative Example 1 (water-based nail polish) was applied in the morning and washes off before going to bed, so that a film was formed by drying after application, and after 8 hours, the film was removed by soaking in hot water. . In Comparative Example 2 (solvent-based nail polish), the film was removed with a commercially available nail polish remover 24 hours after the application in order to compare actual usage conditions assuming one-day use. Sensory evaluation of nail damage was performed for each test segment. The nail polish remover used was a treatment nail remover manufactured by Naris Cosmetics.

[Evaluation criteria for nail damage]
(judgment): (score)
○: No damage to nails ×: Damage to nails (whitening and roughness of nails were observed)

(Evaluation method: Pigmentation)
After applying an appropriate amount of each sample to the nail with a brush, the film was removed according to the characteristics of each sample. The coloration of the nail was confirmed and the presence or absence of pigmentation was determined by the following method.
In Example 1, the coating was removed by soaking in hot water immediately after drying to form the coating. After removing the film, 24 hours later, the surface of the nail was wiped with acetone, and the presence or absence of coloring was confirmed. Comparative Example 1 (water-based nail polish) was applied in the morning and washes off before going to bed, so that a film was formed by drying after application, and after 8 hours, the film was removed by soaking in hot water. After 16 hours from the removal of the film, the surface of the nail was wiped with acetone to confirm the presence or absence of coloring. In Comparative Example 2 (solvent-based nail polish), after drying and forming a film, the film was removed with a commercially available nail polish remover after 24 hours. After confirming that the nail polish remover had evaporated, the surface of the nail was wiped off with acetone, and the presence or absence of coloring was confirmed.

[Evaluation Criteria for Pigmentation]
It was judged by the following evaluation.
(judgment): (score)
○: When the nail was wiped off with acetone, the coloration disappeared from the nail.
x: Coloring was observed on the nail even after the nail surface was wiped off with acetone.

＊１：Ｊポバール ＶＰ－２０ＰＥ：日本酢酸ビ・ポバール社製
＊２：ビニゾール １０１２ＪＣ （４５％（スチレン／アクリル酸アルキル）コポリマーアンモニウム水分散物）：大同化成工業社製

*1: J Poval VP-20PE: manufactured by Nippon Acetate Bi-Poval *2: Vinizol 1012JC (45% (styrene/alkyl acrylate) copolymer ammonium aqueous dispersion): manufactured by Daido Kasei Kogyo Co., Ltd.

As a result of Table 1, the nail dyeing composition of the present invention can be dried quickly, and even though the coloring period is maintained for a certain period of time, damage to the nails and pigmentation do not occur. It was confirmed that it was sufficient. On the other hand, in Comparative Example 1 (water-based nail polish), the color does not remain after 8 hours of application. It was inferior to Example 1 in terms of the ability to retain the appearance, such that the coating peeled off within 8 hours even when no work was done. Comparative Example 2 (solvent-based nail polish) has poor usability because it takes a long time to dry. was observed, and damage to nails was also observed. From the above, it can be seen that the product of the present invention is extremely superior to nail make-up agents currently in the mainstream, and can provide a novel nail dyeing composition.

<Experiment 2>
Examples 1 to 16 and Comparative Examples 3 to 7 shown in Table 2 below were comparatively evaluated with respect to drying time, coloring period, and pigmentation.

(Evaluation method: Evaluation of time until drying)
After an appropriate amount of the sample was applied to the nail with a brush, the time until the color stopped being applied even when pressed with tissue paper was measured. Indicates the actual measured time.

[Evaluation Criteria for Time to Dry]
Evaluation was carried out on a 3-grade scale in the following evaluation, and judgment was made.
(judgment): (score)
◎: 5 minutes or more and less than 10 minutes ○: 10 minutes or more and less than 15 minutes ×: 15 minutes or more

(Evaluation method: Evaluation of coloring period)
An appropriate amount of the sample was applied to the nail with a brush and then dried. After drying, the nail was soaked in hot water to remove the film, and the period during which the entire nail was colored was measured. Specifically, in Examples 1 to 16 and Comparative Examples 3 to 6, the starting time was the time when the coating was removed by soaking in hot water immediately after the coating was formed by drying, and the period until the coloration of the nail disappeared. was measured. Since Comparative Example 7 did not dry, it was washed off with hot water 15 minutes after application.

[Evaluation criteria for coloring period]
It was judged by the following evaluation.
◯: One day after the start, uniform coloring was maintained.
x: One day after the start, uniform coloring was not maintained.

(Evaluation method: evaluation of pigmentation)
For each sample, an expert panelist applied an appropriate amount of the sample to the nail with a brush and then dried it. After drying, the film was removed by soaking in hot water. The coloration of the nail was confirmed and the presence or absence of pigmentation was determined by the following method.
In Examples 1 to 16 and Comparative Examples 3 to 6, the coating was removed by soaking in hot water immediately after drying to form the coating. Since Comparative Example 7 was not dried, it was washed with hot water 15 minutes after application, and then dried. After removing the film, 24 hours later, the surface of the nail was wiped with acetone, and the presence or absence of coloring was confirmed.

[Evaluation Criteria for Pigmentation]
It was judged by the following evaluation.
(judgment): (score)
○: When the nail was wiped off with acetone, the coloration disappeared from the nail.
x: Coloring was observed on the nail even after the nail surface was wiped off with acetone.

The formulations shown in Table 2 below were prepared and confirmed for each evaluation item. Each sample was prepared in the same manner as in Example 1. Table 2 shows the results.

＊１：Ｊポバール ＶＰ－２０ＰＥ：日本酢酸ビ・ポバール社製
＊２：ビニゾール １０１２ＪＣ （４５％（スチレン／アクリル酸アルキル）コポリマーアンモニウム水分散物）大同化成工業社製

*1: J Poval VP-20PE: manufactured by Nippon Acetate Bi-Poval *2: Vinizol 1012JC (45% (styrene/alkyl acrylate) copolymer ammonium aqueous dispersion) manufactured by Daido Kasei Kogyo Co., Ltd.

In the results shown in Table 2, the drying time was the longest in Comparative Example 7, and even 30 minutes after application, the color adhered when pressed with tissue paper. The dryness was too slow to be used as a manicure. This is probably because the film-forming agent was not mixed and the coloring agent was not fixed. In other words, since there are many liquid components such as non-volatile benzyl alcohol, color transfer occurs because it exists on the nail surface as a colored liquid in which the dye is dissolved. In the case of Example 8, in which an equivalent amount of benzyl alcohol was blended, the non-volatile components and the dye could be fixed in the film after the volatile components evaporated. Therefore, color transfer to the tissue disappeared after 12 minutes. Examples 1 to 16 and Comparative Examples 3 to 6 were dried in 5 minutes or more and less than 15 minutes, and thus had good usability.

As for the coloring period, since Comparative Example 3 uses a pigment obtained by turning red No. 106, which is a water-soluble dye, into a lake, the nails were not colored. In Comparative Example 4, since the amount of the dye was small, no coloring was observed on the nails. In Comparative Example 6, since the aromatic alcohol was not blended, the dye was not sufficiently fixed and the color faded in less than one day. In Examples 1 to 16 and Comparative Examples 5 and 7, the coloring of the nails could be maintained for one day or more, which was good.

As for pigmentation, in Comparative Example 5, since the amount of the dye compounded was large, the coloring of the nails was strong. In order to check whether the color remained on the nail according to the aforementioned evaluation method for pigmentation, even after wiping off the nail surface with acetone, the coloration could not be completely removed. Further, the nails were still colored after 10 days, confirming that the nails were pigmented. In other words, when the amount of pigment is too much, it tends to cause pigmentation. Examples 1-16 and Comparative Examples 3-4, 6 and 7 showed no pigmentation.

In addition, regarding the damage to nails in each of the samples in Table 2, since all the samples naturally lose their coloring in normal use, there is no need to remove them with nail polish remover, etc., and there is no particular damage to nails. rice field.

From the results of Experiments 1 and 2 above, the product of the present invention has a water or ethanol-soluble dye content of 0.005 to 1.0% by mass, an aromatic alcohol, a water-based film-forming agent, and water. It turns out that there is It can be seen that the water-based nail polish and solvent-based nail polish had problems in terms of usability, nail damage, and pigmentation.

<Prescription example>
A composition of each formulation was prepared by a conventional method. In any formulation, the effect of the present invention was exhibited without any problem.

<Nail dye (1)>
1. Red No. 218 (dye) 0.05% by mass
2. Red No. 202 (pigment) 0.05% by mass
3. Blue No. 1 (dye) 0.1% by mass
4. Benzyl alcohol 5.0% by mass
5. Polyvinyl alcohol *1 2.0% by mass
6. Alkyl acrylate/styrene copolymer emulsion *2 50.0% by mass
7. Ethanol 15.0% by mass
8. Methylparaben 0.3% by mass
9. Polysorbate 20 1.0% by mass
10.1,3-butylene glycol 1.0 mass%
11. Dipropylene glycol 1.0% by mass
12. Glycerin 1.0% by mass
13. Hydrolyzed keratin liquid 0.1% by mass
14. Hydrolyzed silk 0.1% by mass
15. Water-soluble collagen 0.1% by mass
16. Serine 0.1% by mass
17. Arginine 0.1% by mass
18. Retinol 0.1% by mass
19. Perfume 0.2% by mass
20. Water remaining total 100.0% by mass

<Nail dye (2)>
1. Red No. 218 (dye) 0.05% by mass
2. Titanium oxide (inorganic pigment) 0.1% by mass
3. Benzyl alcohol 3.0% by mass
4. Polyvinyl alcohol *1 5.0% by mass
5. Alkyl acrylate copolymer emulsion *3 50.0% by mass
6. Ethanol 15.0% by mass
7. Methylparaben 0.3% by mass
8. Polysorbate 20 1.0% by mass
9. Trimethylglycine 1.0% by mass
10. Trehalose 1.0% by mass
11. Squalane 0.1% by mass
12. Avocado oil 0.1% by mass
13. Olive oil 0.1% by mass
14. Macadamia nut oil 0.1% by mass
15. Olive oil 0.1% by mass
16. Argania spinosa kernel oil 0.1% by mass
17. Meadowfoam oil 0.1% by mass
18. Horse oil 0.1% by mass
19. Sunflower oil 0.1% by mass
20. Water remaining total 100.0% by mass

<Nail dye (3)>
1. Red No. 223 (dye) 1.0% by mass
2. Benzyl alcohol 2.0% by mass
3. Polyvinylpyrrolidone *4 5.0% by mass
4. Alkyl acrylate copolymer emulsion *3 50.0% by mass
5. Ethanol 5.0% by mass
6. Methylparaben 0.3% by mass
7. Poly(oxyethylene/oxypropylene) methylpolysiloxane copolymer 1.0% by mass
8. Orange oil 1.0% by mass
9. Water remaining total 100.0% by mass

*1: J Poval VP-20PE: Nippon Acetate Bi-Poval *2: Vinizol 1012JC (45% (styrene/alkyl acrylate) copolymer ammonium aqueous dispersion) Daido Kasei *3: Yodozol GH810F (46%) Alkyl acrylate copolymer ammonium aqueous dispersion) Japan NSC Co., Ltd. * 4: Luviscol K-90: BASF Japan Co., Ltd.

Claims (5)

The following components (A) to ( E )
(A) 0.005% by mass to 1.0% by mass of a dye soluble in water and/or a dye soluble in ethanol
(B) aromatic alcohol (C) aqueous film-forming agent (D) water
(E) ethanol
A nail dyeing composition for dyeing the nail itself, containing 2. The nail dyeing composition according to claim 1, wherein component (A) is one or two selected from Red No. 218 and Red No. 223. 3. A nail dyeing composition according to claim 1 or 2, wherein component (B) is benzyl alcohol. The nail dyeing composition according to any one of claims 1 to 3, wherein component (C) is polyvinyl alcohol. The following components (A) to ( E )
(A) 0.005% by mass to 1.0% by mass of a dye soluble in water and/or a dye soluble in ethanol
(B) aromatic alcohol (C) aqueous film-forming agent (D) water
(E) ethanol
A nail dyeing method comprising applying a nail dyeing composition containing to the nail and drying the nail, and then removing the film formed on the nail.