Nail-coating remover

Abstract

Provided is a nail-coating remover which contains 10% by mass or less of acetone, 10-30% by mass of a polyvinylpyrrolidone (A), 50-85% by mass of a combination of at least one oxygen-containing low-molecular-weight organic solvent (B1) that is selected from the group consisting of 1,3-dioxolane, ethyl acetate and monoglyme, and dimethyl carbonate (B2), wherein the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 10 / 90 to 50 / 50.

Description

Nail polish remover

[0001] The present invention relates to a nail-coating remover for removing nail enamel, gel nails, and the like, and more particularly to a gel-type nail-coating remover.

[0002] Nail enamel removers (hereinafter also referred to as "removers") used to remove nail enamel applied to the surface of fingernails, toenails, or artificial nails are generally in liquid form. When the remover is in liquid form, the remover must be soaked into absorbent cotton and placed on the nail, and the finger must be wrapped in aluminum foil to prevent the organic solvent, such as acetone, from quickly evaporating. This causes the problem that not only the nail but also the skin is degreased, causing rough skin.

[0003] In contrast, gel-type removers containing thickeners are also known (see, for example, Patent Document 1). Gel-type removers do not drip when applied to the nails and can be applied precisely to the nails, making them easier to handle than liquid removers. However, like liquid removers, the gel-type remover described in Patent Document 1 still requires the fingers to be wrapped in aluminum foil because the organic solvent, such as acetone, evaporates immediately after application. This poses a problem: the recipient cannot use their fingers or perform other tasks during the nail enamel removal process. To address this issue, the present applicant developed a remover containing a specific thermoplastic resin and a specific organic solvent with a boiling point of 40 to 130°C (see Patent Document 2). This remover has excellent film-forming properties, allowing the recipient to move their fingers and perform other tasks during the nail enamel removal process.

[0004] On the other hand, many common nail enamel removers contain acetone (boiling point 56°C) because it has good nail enamel stripping properties (see, for example, Patent Document 1). However, acetone often causes damage to the nails and the skin around the nail. Furthermore, it has a strong odor that is unpopular with consumers. To solve these problems, so-called acetone-free nail enamel removers have been proposed.

[0005] Patent No. 5484624 Patent No. 7080502

[0006] However, while conventional acetone-free nail enamel removers reduce damage to the nails and the skin around the nails, they have the problem of being significantly inferior in nail enamel stripping (light removal). Furthermore, there is a demand for an acetone-free nail enamel remover that is excellent in film-forming properties. Therefore, the problem that the present invention aims to solve is to provide a nail enamel remover that contains no more than a specified amount of acetone, has excellent stripping properties for nail enamel coatings, is easy to remove, and has excellent film-forming properties and application properties.

[0007] As a result of extensive investigations, the present inventors have found that the above-mentioned problems can be solved by employing a predetermined amount of polyvinylpyrrolidone (A) as a thermoplastic resin, using a combination of predetermined amounts of at least one oxygen-containing low-molecular-weight organic solvent (B1) selected from the group consisting of 1,3-dioxolane, ethyl acetate, and monoglyme and dimethyl carbonate (B2), and adjusting the ratio of the two to a specific range, thereby completing the present invention.

[0008] That is, the present invention relates to the following: <1> A nail enamel remover having an acetone content of 10% by mass or less, containing 10 to 30% by mass of polyvinylpyrrolidone (A), and containing a combination of at least one oxygen-containing low-molecular-weight organic solvent (B1) selected from the group consisting of 1,3-dioxolane, ethyl acetate, and monoglyme and dimethyl carbonate (B2) in an amount of 50 to 85% by mass, wherein the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 10 / 90 to 50 / 50. <2> The nail enamel remover according to <1> above, further containing fumed silica. <3> The nail enamel remover according to <1> above, further containing ethanol. <4> The nail enamel remover according to any one of <1> to <3> above, wherein the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to dimethyl carbonate (B2) is 15 / 85 to 45 / 55. <5> The nail enamel remover according to any one of <1> to <4> above, wherein the acetone content is substantially 0 mass%. <6> The nail enamel remover according to any one of <1> to <5> above, which is in the form of a gel.

[0009] The nail enamel remover of the present invention is substantially free of acetone, and therefore avoids the damage to the skin and unpleasant odor caused by acetone, while at the same time exhibiting sufficient peeling and removal properties for nail enamel. The nail enamel remover of the present invention has an acetone content limited to a predetermined amount or less, which prevents the damage to the skin and unpleasant odor caused by acetone, and further has excellent peeling properties for the nail enamel coating film, good removal workability, and excellent film-forming properties and application properties.

[0010] Hereinafter, a mode for carrying out the present invention (hereinafter simply referred to as "the present embodiment") will be described in detail. The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out by appropriately modifying it within the scope of its gist. In this specification, the expression "XX to YY" means "XX or more and YY or less."

[0011] In this specification, the term "nail enamel remover" refers to a remover that can remove nail enamel from both non-light-curing nail cosmetics such as nail enamel and light-curing nail cosmetics such as soft gel nails. However, in the case of gel nails, the main purpose is to remove the base coat.

[0012] The nail enamel remover of the present invention has an acetone content of 10% by mass or less, contains 10 to 30% by mass of polyvinylpyrrolidone (A), and contains a combination of at least one oxygen-containing low-molecular-weight organic solvent (B1) selected from the group consisting of 1,3-dioxolane, ethyl acetate, and monoglyme and dimethyl carbonate (B2) in an amount of 50 to 85% by mass, and the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 10 / 90 to 50 / 50.

[0013] The reason why the effects of the present invention are achieved is unclear, but is presumed to be as follows. The thermoplastic resin polyvinylpyrrolidone (A) contained in the nail enamel remover of the present invention is dispersed in the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2), forming a three-dimensional network structure with a stable multilayer structure through interactions such as hydrogen bonding, resulting in a phenomenon known as thickening. Here, the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) on the air-side surface of the remover applied to the nail enamel volatilize, and the network structure of polyvinylpyrrolidone (A) forms a coating. The formation of the coating prevents the remover from dripping. Furthermore, the formation of the coating inhibits the evaporation of the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) from the air-side surface of the remover, and allows the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) to penetrate into the nail enamel from the nail-side surface of the remover, thereby efficiently removing the nail enamel. Furthermore, by suppressing volatilization on the air-side surface and penetrating the nail enamel onto the nail-side surface, the inside of the remover also changes from a high-viscosity liquid state to a rubbery solid state, improving workability by reducing adhesion of the remover to the remover tool used when removing the remover. In this case, it is presumed that by specifying the ratio of the oxygen-containing low-molecular-weight organic solvent (B1) to dimethyl carbonate (B2), the film formation of the polyvinylpyrrolidone (A), the suppression of volatilization, the penetration into the nail enamel, and the workability of removing the nail enamel are optimized.

[0014] <Acetone Content> The acetone content of the nail enamel remover of the present invention is 10% by mass or less. By restricting the amount of acetone in this way, the disadvantages of acetone, such as damage to human skin and its distinctive odor, can be improved. From this perspective, the acetone content is preferably 8% by mass or less, more preferably 6% by mass or less, even more preferably 4% by mass or less, and even more preferably 2% by mass or less, and particularly preferably substantially 0% by mass (acetone-free). Here, substantially 0% by mass means that the acetone content is below the detection limit of a common detection means.

[0015] <Polyvinylpyrrolidone (A)> The nail enamel remover of the present invention contains polyvinylpyrrolidone (A) as a thermoplastic resin. When the nail enamel remover of the present invention contains polyvinylpyrrolidone (A), the polyvinylpyrrolidone (A) forms a coating as the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) volatilize from the air-side surface of the remover applied to the nail enamel, suppressing further volatilization of the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) from the air-side surface of the remover, and allowing the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) to penetrate into the nail enamel from the nail-side surface of the remover, thereby enabling efficient removal of the nail enamel. Furthermore, the formation of a coating prevents the remover from dripping even when the finger is moved during the nail enamel removal process, making the nail enamel remover excellent in usability.

[0016] Commercially available polyvinylpyrrolidone products can be used, such as "Pitzcol (registered trademark)" manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., specifically "K-90" (K value: 92 to 96, weight average molecular weight: 1,200,000), "K-50" (K value: 48 to 52, weight average molecular weight: 250,000), and "K-30" (K value: 27 to 33, weight average molecular weight: 45,000). In addition, products manufactured by Ashland include "K-120 (K value: 114-130, weight average molecular weight: 2,100,000 to 3,000,000), "K-90" (K value: 85 to 90, weight average molecular weight: 1,000,000 to 1,700,000), "K-60" (K value: 50 to 62, weight average molecular weight: 390,000 to 470,000), and "K-30" (K value: 36 to 35, weight average molecular weight: 40,000 to 80,000). Further examples include "K90" (K value: 84 to 95) manufactured by Tokyo Chemical Industry Co., Ltd. The K value is a viscosity characteristic value correlated with molecular weight, and is calculated by applying the relative viscosity value (25 ° C.) measured by a capillary viscometer to the Fikentscher formula.

[0017] From the viewpoint of forming a coating, the weight-average molecular weight of polyvinylpyrrolidone is preferably 40 to 120, more preferably 50 to 110, in terms of K value (a viscosity characteristic value correlated with molecular weight). Specifically, from the viewpoint of achieving both film-forming properties and peelability, K-50, K-60, K-90, and the like are preferred.

[0018] The content of polyvinylpyrrolidone (A) in the nail enamel remover of the present invention is 10 to 30% by mass, and from the viewpoint of film formation, it is preferably 11% by mass or more, more preferably 12% by mass or more, and from the viewpoint of solubility in the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2), it is preferably 27% by mass or less, more preferably 25% by mass or less, and even more preferably 23% by mass or less. The content of polyvinylpyrrolidone (A) in the nail enamel remover of the present invention is preferably 11% by mass or more and 27% by mass or less, more preferably 12% by mass or more and 25% by mass or less, and even more preferably 12% by mass or more and 23% by mass or less.

[0019] <Oxygen-containing low-molecular-weight organic solvent (B1)> The oxygen-containing low-molecular-weight organic solvent (B1) contained in the nail enamel remover of the present invention is at least one selected from the group consisting of 1,3-dioxolane, ethyl acetate, and monoglyme. The boiling points of 1,3-dioxolane, ethyl acetate, and monoglyme (1,2-dimethoxyethane) are 75°C, 77°C, and 85°C, respectively.

[0020] The content of the oxygen-containing low-molecular-weight organic solvent (B1) in the nail enamel remover of the present invention is preferably 5% by mass or more, more preferably 8% by mass or more, and even more preferably 10% by mass or more, from the viewpoint of nail enamel removal performance, and is preferably 40% by mass or less, more preferably 35% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of film formation and workability during nail enamel removal. Furthermore, the content of the oxygen-containing low-molecular-weight organic solvent (B1) in the nail enamel remover of the present invention is preferably 5% by mass or more and 40% by mass or less, more preferably 8% by mass or more and 35% by mass or less, and even more preferably 10% by mass or more and 30% by mass or less.

[0021] <Dimethyl Carbonate (B2)> The nail enamel remover of the present invention contains dimethyl carbonate (B2). The boiling point of dimethyl carbonate is 90°C. The content of dimethyl carbonate (B2) in the nail enamel remover of the present invention is preferably 30% by mass or more, more preferably 35% by mass or more, and even more preferably 40% by mass or more. The upper limit is preferably 70% by mass or less, more preferably 65% ​​by mass or less, and even more preferably 60% by mass or less. The content of dimethyl carbonate (B2) in the nail enamel remover of the present invention is preferably 30% by mass or more and 70% by mass or less, more preferably 35% by mass or more and 65% by mass or less, and even more preferably 40% by mass or more and 60% by mass or less. The total content of the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) in the nail enamel remover of the present invention is 50 to 85% by mass, preferably 55 to 80% by mass, and more preferably 60 to 75% by mass. In the nail enamel remover of the present invention, the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 10 / 90 to 50 / 50, preferably 15 / 85 to 45 / 55, and more preferably 20 / 80 to 40 / 60. In the nail enamel remover of the present invention, it is understood that by specifying the total content (B1+B2) of the dimethyl carbonate (B2) and the oxygen-containing low-molecular-weight organic solvent (B1) and the mass ratio (B1 / B2), the film formation of the polyvinylpyrrolidone (A), the effect of inhibiting volatilization, the penetration into the nail enamel, and the workability during nail enamel removal are optimized.

[0022] <Other Components> The nail enamel remover of the present invention may contain components (other components) other than polyvinylpyrrolidone (A), the oxygen-containing low-molecular-weight organic solvent (B1), and dimethyl carbonate (B2), as long as the effects of the present invention are not impaired.

[0023] The nail enamel remover of the present invention may contain a lower monohydric alcohol as an auxiliary solvent for compatibilizing the polyvinylpyrrolidone (A) with the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2). The lower monohydric alcohol is preferably a monohydric alcohol having 1 to 4 carbon atoms. Specific examples of the lower monohydric alcohol include methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, n-pentanol, i-pentanol, n-hexanol, i-hexanol, and 2-ethylhexanol. Among these, methanol or ethanol is preferred, and ethanol is more preferred. From the viewpoint of compatibilizing the polyvinylpyrrolidone (A) with the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2), the content of the lower monohydric alcohol in the nail enamel remover of the present invention is preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 20% by mass or less. The lower limit is not particularly limited, but is preferably 3% by mass or more, more preferably 5% by mass or more, and even more preferably 8% by mass or more. The content of the lower monohydric alcohol in the nail enamel remover of the present invention is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and even more preferably 8% by mass or more and 20% by mass or less.

[0024] The nail enamel remover of the present invention may further contain fumed silica. The content of fumed silica in the nail enamel remover of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more. The upper limit is preferably 8% by mass or less, more preferably 6% by mass or less, and even more preferably 4% by mass or less. Furthermore, the content of fumed silica in the nail enamel remover of the present invention is preferably 1% by mass or more and 8% by mass or less, more preferably 2% by mass or more and 6% by mass or less, and even more preferably 3% by mass or more and 4% by mass or less.

[0025] The nail enamel remover of the present invention may contain a nail protective agent. Examples of nail protective agents include hydrocarbon oils such as petrolatum and squalane; vegetable oils such as jojoba oil and olive oil; fatty acids such as stearic acid and oleic acid; higher alcohols such as cetanol and oleyl alcohol; polyoxyethylene sorbitan fatty acid esters; glycols such as propylene glycol, 1,3-butylene glycol, isoprene glycol, and polyethylene glycol; and polyhydric alcohols such as glycerin. From the viewpoint of protecting the nails without inhibiting the effects of the present invention, the content of the nail protective agent in the nail enamel remover of the present invention is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less. The lower limit is not particularly limited, but is preferably 0.5% by mass or more. Furthermore, the content of the nail protective agent in the nail enamel remover of the present invention is preferably 0.5% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 5% by mass or less, and even more preferably 0.5% by mass or more and 3% by mass or less.

[0026] The nail enamel remover of the present invention may contain an antioxidant. The antioxidant is not particularly limited, but tocopherol acetate is preferred from the viewpoints of safety and availability. The content of the antioxidant in the nail enamel remover of the present invention is preferably 5% by mass or less, more preferably 3% by mass or less, so as not to inhibit the effects of the present invention and to prevent oxidation of the remover. The lower limit is not particularly limited, but is preferably 0.5% by mass or more. The content of the antioxidant in the nail enamel remover of the present invention is preferably 0.5% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 3% by mass or less.

[0027] The nail enamel remover of the present invention may contain water in an amount that does not inhibit the solubility of polyvinylpyrrolidone (A) or the volatility of the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2). The water content in the nail enamel remover of the present invention is preferably 10% by mass or less, more preferably 7% by mass or less.

[0028] <Nail enamel remover> The nail enamel remover of the present invention is preferably in the form of a gel from the viewpoint of forming a coating. The nail enamel remover of the present invention can effectively remove, in particular, the base coat portion of light-curing nail cosmetics such as soft gel nails. It can also effectively remove non-light-curing nail cosmetics such as nail enamel.

[0029] The present invention will be explained in more detail below with reference to examples, but the present invention is not limited to these examples in any way.

[0030] The compounds used in the examples are as follows: <Polyvinylpyrrolidone (A)> PVP: Polyvinylpyrrolidone PVP1: "Pitzcol K-90" (K value: 92-96, weight average molecular weight: 1,200,000), manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd. PVP2: "Pitzcol K-50" (K value: 48-52, weight average molecular weight: 250,000), manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.

[0031] <Oxygen-containing low-molecular-weight organic solvent (B1)> 1,3-dioxolane (boiling point: 75°C) Ethyl acetate (boiling point: 77°C) Monoglyme (boiling point: 85°C)

[0032] <Dimethyl carbonate (B2)> Dimethyl carbonate (boiling point: 90°C)

[0033] <Other ingredients> Ethanol, fumed silica ("AEROSIL R974", manufactured by Nippon Aerosil Co., Ltd.)

[0034] Examples 1 to 16, Comparative Examples 1 to 9 Each sample was placed in a container in the composition (mass ratio) shown in Tables 1 to 3 and stirred with a stirrer for a sufficient time until uniform, to prepare a nail enamel remover. The following evaluations were carried out for each remover obtained. The results are shown in Tables 1 to 3 below. In Tables 1 to 3, the "B1 / B2 mass ratio" is shown as the mass ratio of B1 or B2 when the total amount of the oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) is taken as 100 parts by mass.

[0035] [Evaluation Method] (1) Removability 1. Preparation of Gel Samples A 10 mm diameter circle was drawn on a pig's hoof, and approximately 40 mg of base gel was evenly applied within the circle. The applied gel was irradiated with an LED and cured. Approximately 10 mg of color gel (Shiny Gel Professional Color Gel 127 Pure Red (World Beauty Works)) was applied. The applied gel was irradiated with an LED and cured. Three types of gel samples were prepared using the base gels listed below. 2. Removability Test The color gel portion of the gel sample was scraped off with a file, and a polishing process was performed until the base coat portion was exposed. Approximately 90% of the color gel portion was removed from the gel sample by the polishing process. A remover was applied so that it came into contact with the base coat portion consisting of the cured gel after the polishing process. The sample was left in this state for 15 minutes, and the removability of the cured gel was then observed. (Base gel) "Shiny Gel Super Base" (manufactured by World Beauty Works) "Shiny Gel Power Base" (manufactured by World Beauty Works) "Paragel Clear Gel EX" (manufactured by Nail Select) (Rating) 8 All of the cured gel was peeled off 7 Between 90% and less than 100% of the cured gel was peeled off 6 Between 60% and less than 90% of the cured gel was peeled off 5 Between 40% and less than 60% of the cured gel was peeled off 4 Between 30% and less than 40% of the cured gel was peeled off 3 Between 10% and less than 30% of the cured gel was peeled off 2 The cured gel softened slightly and only less than 10% could be peeled off 1 The cured gel was not softened and was barely peelable

[0036] (2) Removal Workability Test Gel samples were polished in the same manner as in the peelability test. Remover was applied to the polished gel samples, and they were left to stand on a 35°C heater for 15 minutes. After that, the state of the remover film consisting of the remover and nail enamel when the remover and nail enamel were removed with a remover tool was compared.

[0037] 5: Almost no stickiness inside the remover film, and no adhesion to the remover tool; 4: Slight stickiness inside the remover film, and almost no adhesion to the remover tool; 3: Some stickiness remains inside the remover film, and some adhesion to the remover tool; 2: Some stickiness remains inside the remover film, and relatively much adhesion to the remover tool; 1: Significant stickiness remains inside the remover film, and considerable adhesion to the remover tool. (3) Film Formation Test: The gel sample was subjected to abrasion treatment in the same manner as in the peelability test. The remover was applied to the polished gel sample, and then left to stand for 1 minute, 5 minutes, and 15 minutes, after which the polyvinylpyrrolidone film formed on the air-side surface of the remover was evaluated by touch with the fingers. In the following evaluations, "strong film" means a film with sufficient thickness, and "weak film" means a film with a certain thickness. 5 A strong film is formed and does not adhere to fingers 4 A weak film is formed and does not adhere to fingers 3 A weak film is formed, but there is some adhesion to fingers 2 A weak film is formed, but there is adhesion to fingers 1 No film is formed, and there is adhesion to fingers

[0038] (4) Coating property (fluidity) test: The gel sample was polished in the same manner as in the peeling property test. After polishing the remover, the gel sample was visually inspected to see if it had fluidity when applied. Good: Fluidity present. Poor: No fluidity present.

[0039]

[0040]

[0041] As is clear from the results shown in Tables 1 and 2, in Comparative Examples 1 and 2, where the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) was less than 10 / 90, the strippability of the nail enamel remover was slightly inferior to that of the Examples. Furthermore, as shown in Table 2, when the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) exceeded 50 / 50, the removal workability was poor, and the film-forming ability 1 minute after application was also somewhat poor (Comparative Examples 3 to 5). In contrast, the nail enamel removers of the Examples had the amounts of the oxygen-containing low-molecular-weight organic solvent (B1) and the mass ratio (B1 / B2) thereof within appropriate ranges, and achieved good results in strippability, removal workability, film-forming ability, and application ability (Examples 1 to 9).

[0042]

[0043] As is clear from the results shown in Table 3, when the amount of thermoplastic resin polyvinylpyrrolidone (A) was too small, the peelability, removal workability, and film-forming properties were poor (Comparative Example 6). Conversely, when the amount of polyvinylpyrrolidone was too large, the application properties (fluidity) were poor, no film was formed, and other test results could not be obtained (Comparative Example 8), or the removal workability was poor (Comparative Example 9). Furthermore, when the total amount of oxygen-containing low-molecular-weight organic solvent (B1) and dimethyl carbonate (B2) was too small, the peelability was poor (Comparative Example 7). In contrast, the nail enamel removers of the examples had the amounts of polyvinylpyrrolidone (A), oxygen-containing low-molecular-weight organic solvent (B1), and dimethyl carbonate (B2) within the appropriate range, and achieved good results in peelability, removal workability, film-forming properties, and application properties (Examples 10 to 16).

Claims

1. The acetone content is 10% by mass or less, and Contains 10 to 30% by mass of polyvinylpyrrolidone (A), The solvent contains a combination of at least one oxygen-containing low-molecular-weight organic solvent (B1) selected from the group consisting of 1,3-dioxolane, ethyl acetate, and monoglyme and dimethyl carbonate (B2) in an amount of 50 to 85% by mass, A nail enamel remover, wherein the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 10 / 90 to 50 / 50.

2. 2. The nail enamel remover of claim 1, further comprising fumed silica.

3. The nail enamel remover according to claim 1, further comprising ethanol.

4. The nail enamel remover according to any one of claims 1 to 3, wherein the mass ratio (B1 / B2) of the oxygen-containing low-molecular-weight organic solvent (B1) to the dimethyl carbonate (B2) is 15 / 85 to 45 / 55.

5. The nail enamel remover according to any one of claims 1 to 3, wherein the acetone content is substantially 0% by mass.

6. The nail enamel remover according to any one of claims 1 to 3, which is in the form of a gel.