Sheet cosmetic

Abstract

To provide a sheet cosmetic which has superior cooling effect during wiping and also prolonged retention of cooling effect after wiping, while reducing skin irritation to a sufficient level during and after wiping.SOLUTION: The present invention provides a sheet cosmetic comprising a sheet base material and a cosmetic composition impregnated into the sheet base material, wherein the cosmetic composition contains component A: ethanol, component B: menthol, and component C: camphor.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a sheet cosmetic material. [Background technology]

[0002] Conventionally, sheet cosmetics obtained by impregnating a sheet substrate with a cosmetic composition have been widely used as cosmetics for wiping off dirt such as sweat and sebum, makeup stains, etc. Among these, attempts have been made to impart a cooling effect to sheet cosmetics intended for wiping off dirt such as sweat and sebum in order to achieve a refreshing feeling when used.

[0003] In sheet cosmetics that exert such a cooling sensation effect, a cosmetic composition that is impregnated into a sheet substrate contains lower alcohols such as ethanol that actually lower the surface temperature of the skin by utilizing the heat of vaporization, and cooling agents such as menthol that impart a sensory cooling sensation (see, for example, Patent Documents 1 and 2).

[0004] However, while these sheet cosmetics can exert an excellent cooling sensation effect, they have the problem that, depending on the blended amount of lower alcohol or cooling agent, they can give an undesirable strong irritating feeling to the skin during and after wiping. On the other hand, when an attempt is made to impart a cooling sensation to a range where a strong irritation is not felt on the skin, although a certain degree of cooling sensation can be imparted during wiping, there is also the problem that it is difficult to obtain a sustained cooling sensation effect after wiping.

[0005] Therefore, there has been a demand for the development of a sheet cosmetic that satisfies both the lack of irritation during and after wiping and the long-lasting cooling effect after wiping. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-158429 A [Patent Document 2] JP 2007-176850 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in view of the above-mentioned conventional techniques. That is, an object of the present invention is to provide a sheet cosmetic preparation that is excellent in both the cooling sensation effect during wiping and the sustained cooling sensation effect after wiping, while sufficiently reducing irritation to the skin during and after wiping. [Means for solving the problem]

[0008] That is, the present invention provides a sheet cosmetic comprising a sheet substrate and a cosmetic composition impregnated into the sheet substrate, the cosmetic composition comprising the following components A, B, and C: Component A: Ethanol Ingredient B: Menthol Ingredient C: Camphor

[0009] In 100% by mass of the cosmetic composition, it is preferable that the content of Component A is 30 to 50% by mass, the content of Component B is 0.2 to 1% by mass, and the content of Component C is 0.004 to 0.6% by mass.

[0010] It is preferable that the cosmetic composition further contains the following component D. Sugar alcohols

[0011] The impregnation amount of the cosmetic composition is preferably 200 to 600 parts by mass per 100 parts by mass of the sheet substrate. Effect of the Invention

[0012] By satisfying the above-mentioned constituent requirements, the sheet cosmetic of the present invention can impart an excellent cooling sensation effect when wiping off, and the cooling sensation effect is maintained even after wiping off, thereby exhibiting a remarkably excellent effect in both imparting and sustaining a cooling sensation effect. Furthermore, despite its excellent cooling sensation effect, the sheet cosmetic of the present invention also exhibits a remarkably excellent effect in terms of the lack of irritation, that is, it does not cause an irritating sensation to the skin during or after wiping off. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The sheet cosmetic of the present invention comprises at least a sheet substrate and a cosmetic composition impregnated in the sheet substrate. In this specification, the sheet substrate constituting the sheet cosmetic of the present invention may be referred to as the "sheet substrate of the present invention". The cosmetic composition constituting the sheet cosmetic of the present invention may be referred to as the "cosmetic composition of the present invention". The sheet cosmetic of the present invention may contain components other than the sheet substrate of the present invention and the cosmetic composition of the present invention.

[0014] [Cosmetic composition] The cosmetic composition constituting the sheet cosmetic of the present invention (the cosmetic composition of the present invention) contains at least ethanol, menthol and camphor. The cosmetic composition of the present invention preferably further contains a sugar alcohol. The cosmetic composition of the present invention is used by being impregnated into a sheet substrate.

[0015] In this specification, the ethanol may be referred to as "component A". The menthol may be referred to as "component B". The camphor may be referred to as "component C". Additionally, the sugar alcohol may be referred to as "component D".

[0016] The cosmetic composition of the present invention may contain components (other components) other than the above-mentioned Component A, Component B, Component C, and Component D. The above-mentioned Component A, Component B, Component C, Component D, and other components may be used alone or in appropriate combination of two or more.

[0017] [Component A] The component A is ethanol. In the present invention, by using the component A, the heat of vaporization generated by the volatilization of the component acts to provide an excellent cooling effect on the skin during and after wiping.

[0018] The content of Component A in the cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of imparting a cooling sensation effect and reducing irritation to the skin, it is usually preferably 30 to 50 mass%, more preferably 33 to 47 mass%, and even more preferably 35 to 45 mass% in 100 mass% of the composition. Note that the content of Component A is the amount converted into a pure content.

[0019] [Component B] The component B is menthol. In the present invention, by using the component B, it is possible to enhance the cooling effect while suppressing the irritation to the skin, and to further increase the duration of the cooling effect. Among the menthols, it is preferable to use l-menthol in the present invention.

[0020] In the present invention, a commercially available product can be used as the above-mentioned component B. The commercially available product of component B is not particularly limited as long as it exhibits the desired effect, even if it is a single raw material or a mixed raw material with other components.

[0021] The content of component B in the cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of enhancing the cooling sensation effect while suppressing irritation to the skin and further increasing the durability of the cooling sensation effect, it is usually preferably 0.2 to 1 mass %, more preferably 0.35 to 0.85 mass %, and even more preferably 0.4 to 0.7 mass % in 100 mass % of the composition. Note that the content of component B is the amount converted into a pure content.

[0022] [Component C] The component C is camphor. In the present invention, by using the component C, it is possible to further enhance the cooling sensation effect while suppressing the irritation to the skin, and to further increase the duration of the cooling sensation effect.

[0023] In the present invention, a commercially available product can be used as the above-mentioned component C. The commercially available product of component C may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0024] The content of component C in the cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of further enhancing the cooling sensation effect while suppressing irritation to the skin and further increasing the durability of the cooling sensation effect, it is usually preferably 0.004 to 0.6 mass%, more preferably 0.007 to 0.2 mass%, and even more preferably 0.01 to 0.07 mass% in 100 mass% of the composition. Note that the content of component C is the amount converted into a pure content.

[0025] In addition, in the cosmetic composition of the present invention, from the viewpoints of minimizing irritation to the skin, further enhancing the cooling sensation effect, and further increasing the durability of the cooling sensation effect, the mass ratio of the content of the above-mentioned component B to the above-mentioned component C (component B / component C) is preferably prepared to satisfy the range of 1 to 50, more preferably prepared to be in the range of 5 to 45, and even more preferably prepared to be in the range of 10 to 40.

[0026] Furthermore, from the viewpoints of minimizing the sensation of irritation to the skin, further enhancing the cooling sensation effect, and further increasing the durability of the cooling sensation effect, the total content of the above-mentioned component B and the content of the above-mentioned component C (component B + component C) is preferably 0.2 to 1.2 mass%, more preferably 0.3 to 1 mass%, and even more preferably 0.4 to 0.8 mass%, of 100 mass% of the composition.

[0027] [Component D] The cosmetic composition of the present invention preferably further contains a sugar alcohol as component D. By using the above component D, it becomes possible to further reduce the irritation to the skin without reducing the cooling sensation effect.

[0028] Specific examples of component D include glucose, maltose, sorbitol, maltitol, trehalose, erythritol, arabitol, ribitol, xylitol, galactitol, mannitol, sucrose, etc. These components D may be used alone or in appropriate combination of two or more.

[0029] Among these components D, from the viewpoint of further reducing the irritation to the skin without adversely affecting the cooling sensation effect, it is preferable to use at least one selected from sorbitol, trehalose, erythritol and xylitol, and it is more preferable to use sorbitol and / or xylitol.

[0030] In the present invention, a commercially available product can be used as the above-mentioned component D. The commercially available product of component D may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0031] The content of component D in the cosmetic composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of further reducing the irritation to the skin without reducing the cooling effect, it is usually preferably 0.05 to 2 mass%, more preferably 0.1 to 1.5 mass%, and even more preferably 0.15 to 1 mass% in 100 mass% of the composition. Note that the content of component D is the amount converted into a pure content.

[0032] [Other ingredients] In addition to the above-mentioned components, the cosmetic composition of the present invention may contain nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, higher alcohols, lower alcohols other than component A, cooling agents other than components B and C, polyhydric alcohols, water-soluble thickeners, fragrances, powders, colorants, antioxidants, preservatives, UV absorbers, inorganic pigments, pearlizing agents, vitamins, animal and plant extracts, sequestering agents, etc., depending on the purpose and use, as long as the effects of the present invention are not impaired. The above-mentioned other components may be used alone or in combination of two or more. The above-mentioned other components exclude those contained in the above-mentioned components A, B, C, and D.

[0033] The remainder of the cosmetic composition of the present invention is purified water. The content of purified water is not particularly limited, but from the viewpoint of suppressing a decrease in the cooling sensation effect due to wetness, it is preferably 40 to 75% by mass, and more preferably 45 to 70% by mass.

[0034] The properties of the cosmetic composition of the present invention are not particularly limited as long as the desired effects are sufficiently exhibited, and the composition may be in any form, such as a liquid, gel, emulsion, or cream. However, from the viewpoint of impregnating the sheet base material of the present invention described below and maximizing the effects of the present invention, it is desirable for the composition to be in a liquid form that allows easy impregnation into the sheet base material.

[0035] The method for producing the cosmetic composition of the present invention is not particularly limited, but may be, for example, a known method. Specifically, for example, the above-mentioned components are mixed and stirred using a paddle mixer, a dispersing mixer, or the like, but the present invention is not limited to these production methods.

[0036] [Sheet base material] The sheet substrate in the sheet cosmetic of the present invention (the sheet substrate of the present invention) is a sheet-like support that can be impregnated with the above-mentioned cosmetic composition of the present invention.

[0037] The material of the sheet substrate of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, and examples thereof include paper, woven fabric, nonwoven fabric, etc. The sheet substrate may be a laminate, a so-called laminate sheet, for example, a laminate made of woven fabric, a laminate made of nonwoven fabric, a laminate made of woven fabric and nonwoven fabric, etc. From the viewpoint of usability and ease of processing, the sheet substrate of the present invention is preferably a sheet substrate containing nonwoven fabric, and more preferably a nonwoven fabric.

[0038] The fibers constituting the woven fabric or nonwoven fabric are not particularly limited, and examples thereof include natural fibers, synthetic fibers, and semi-natural fibers. Specific examples of natural fibers include cotton, pulp, silk, cellulose, hemp, linters, and kapok. Specific examples of synthetic fibers include nylon fibers, polyester fibers (e.g., polyethylene terephthalate fibers, polybutylene terephthalate fibers), acrylic fibers, and polyolefin fibers (e.g., polypropylene fibers, polyethylene fibers). Specific examples of semi-natural fibers include rayon and acetate. These fibers may be used alone or in appropriate combination of two or more. Blended fibers consisting of two or more of the above fibers may also be used. The surface of the sheet substrate may be embossed.

[0039] The basis weight of the sheet substrate of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but is preferably 10 to 100 g / m 2 It is preferable that the thickness is 20 to 80 g / m 2 It is more preferable that the weight per unit area is 10 g / m 2 When the basis weight is 100 g / m or more, the cosmetic composition can be sufficiently impregnated. 2 If the thickness is not more than this, the feel on the skin during use, that is, the so-called touch comfort, can be improved.

[0040] [Sheet cosmetics] The sheet cosmetic of the present invention comprises the above-mentioned sheet base material and the above-mentioned cosmetic composition impregnated into the sheet base material.

[0041] The impregnated amount (mass ratio) of the cosmetic composition of the present invention impregnated in the sheet cosmetic of the present invention is not particularly limited as long as it does not irritate the skin and exhibits an excellent cooling sensation effect, but from the viewpoint of exhibiting the fresh feeling of use that is unique to sheet cosmetics, the impregnated amount of the cosmetic composition per 100 parts by mass of the sheet base material is preferably 200 to 700 parts by mass, and more preferably 300 to 600 parts by mass.

[0042] The shape of the sheet cosmetic of the present invention is a sheet. This not only makes it highly portable, but also allows it to provide an excellent feeling of use when used to wipe the skin. The planar shape of the sheet is not particularly limited as long as it fully provides the desired effect, and examples of the planar shape include polygons such as quadrangles (e.g., squares, rectangles, trapezoids), triangles, circles, ellipses, semicircles, and character shapes. Among these, quadrangles are preferred from the viewpoints of productivity and usability. In addition, the sheet cosmetic of the present invention may be molded with cuts, cutouts, uneven parts, etc.

[0043] The sheet cosmetic of the present invention can be produced by impregnating the above-mentioned sheet substrate with the cosmetic composition of the present invention. The production method is not particularly limited, but examples include a method of injecting the cosmetic composition of the present invention into the above-mentioned sheet substrate in a folded or overlapped state to impregnate it, a method of spraying the cosmetic composition of the present invention onto the above-mentioned sheet substrate, a method of impregnating the above-mentioned sheet substrate with the cosmetic composition of the present invention using a printing method, and a method of immersing the above-mentioned sheet substrate in the cosmetic composition of the present invention.

[0044] [Sheet cosmetic products] From the viewpoints of portability when going out and ease of removal when used, i.e., so-called ease of handling, the sheet cosmetic of the present invention is preferably stored in a packaging container to form a sheet cosmetic product. Such a sheet cosmetic product may be in a form in which each sheet of the sheet cosmetic is individually packaged, or in a form in which multiple sheets of the sheet cosmetic are stored in the same packaging container.

[0045] When multiple sheets of the sheet cosmetic material of the present invention are stored in the same packaging container, the number of sheets of the sheet cosmetic material of the present invention is not particularly limited, but is preferably 2 or more, and more preferably 5 or more from the viewpoint of being able to take out and use it many times. On the other hand, from the viewpoint of excellent portability and not taking up space when carried, the upper limit of the number of sheets of the sheet cosmetic material stored in one packaging container is preferably 50 or less. In addition, the sheet cosmetic material of the present invention is preferably stored in a packaging container folded in half, rolled in three, folded in three outwards (Z-fold), gate fold, right-angle fold in four, rolled in four, folded in four outwards, 5Z-fold, accordion fold, or the like.

[0046] The material of the packaging container is not particularly limited, and examples thereof include resins such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), and metals such as aluminum. The packaging container is preferably made of a material in which a metal (particularly aluminum) layer and a resin layer are layered (for example, laminated or vapor-deposited), which is lightweight and has an excellent volatilization prevention effect.

[0047] The sheet cosmetic of the present invention is used for wiping the skin. The area to be wiped with the sheet cosmetic of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, and examples thereof include the face (forehead, eyes, corners of the eyes, cheeks, mouth, etc.), arms, elbows, backs of the hands, fingertips, feet, knees, heels, neck, armpits, and back. That is, the sheet cosmetic of the present invention can be suitably used as a face wipe sheet cosmetic or a body wipe sheet cosmetic. In particular, the sheet cosmetic of the present invention not only reduces the irritation to the skin and can impart an excellent cooling effect, but also has a significantly excellent cooling effect that lasts longer, so it is most desirable to use it as a face wipe sheet cosmetic. The sheet cosmetic of the present invention may be any of cosmetics, quasi-drugs, medicines, and miscellaneous goods. EXAMPLES

[0048] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. The amounts of ingredients are expressed in "mass %" unless otherwise specified, and the amounts of ingredients in the tables are all values ​​converted to pure contents. In addition, all evaluations were performed at a constant temperature (25±2°C).

[0049] (Sample preparation 1) Cosmetic compositions of Examples 1 to 8 and Comparative Examples 1 to 5 were prepared in a conventional manner according to the compositions shown in Tables 1 and 2. Next, a folded sheet substrate (material: rayon / thermal fusion fiber, sheet size: 15 cm x 10 cm, basis weight: 60 g / m 2 ) were stacked and placed in a packaging container (sealable packaging bag), and the prepared cosmetic composition was poured into the packaging container to impregnate the sheet substrate, thereby producing a sheet cosmetic. The packaging container was then sealed to produce a sheet cosmetic product, which was then subjected to the following evaluations. The results are shown in Tables 1 and 2. The mass ratio (parts by mass) of the impregnated amount of the cosmetic composition relative to 100 parts by mass of the sheet substrate in each of the produced sheet cosmetics is as shown in Tables 1 and 2.

[0050] (Test Example 1: Evaluation when wiping) A usage test was carried out in which one sheet cosmetic was taken out from each of the sheet cosmetic products obtained in the Examples and Comparative Examples, and the subject was asked to wipe the entire face, focusing on the eye area, for 30 seconds. Sensory evaluation was conducted on the "cool feeling" and "stimulating feeling" during wiping, and scores were assigned according to the following evaluation points of 1 to 5. The evaluation was carried out by five expert evaluators, and the average score of each evaluator was used to determine the judging criteria below.

[0051] The evaluation criteria for "refreshing sensation" were as follows: the more refreshing sensation felt when wiping, the higher the score. The evaluation criteria for "irritation" were as follows: the less irritation felt when wiping, the higher the score.

[0052] <Evaluation criteria> 5 points: very good 4 points: Good 3 points: Average 2 points: Defective 1 point: Very poor

[0053] <Judgment criteria> ◎:Average 4.0 or more ○: Average 3.0 or more and less than 4.0 △: Average 2.0 or more and less than 3.0 ×: Average less than 2.0

[0054] (Test Example 2: Evaluation after wiping) Evaluation of Test Example 1: Sensory evaluation was performed for "cooling sensation" and "irritation" after 5 minutes, and scores were assigned according to the evaluation criteria and judgments were made according to the criteria in the same manner as in Test Example 1. The evaluation criteria for "cooling sensation" were as follows: the higher the continuing cooling sensation felt after wiping, the higher the score. The evaluation criteria for "irritation" were as follows: the lower the irritation felt after wiping, the higher the score.

[0055] [Table 1]

[0056] [Table 2]

[0057] The results shown in Tables 1 and 2 show that the sheet cosmetic materials of the present invention obtained in each Example, compared to those obtained in each Comparative Example, are not only capable of imparting an excellent cooling sensation effect during wiping, but also exhibit excellent durability of the cooling sensation effect. It is also clear that the sheet cosmetic material of the present invention, despite its excellent cooling sensation effect, does not cause irritation to the skin during or after wiping.

[0058] In contrast, Comparative Examples 1 to 5, which do not contain the essential components of the present invention, do not fully exhibit the unique effect of the present invention, that is, the effect of imparting an excellent and long-lasting cooling effect without irritation. As is clear from these results, it can be said that the present invention can maximize both of the unique effects of "long-lasting cooling effect" and "no irritation" only by containing the essential components.

Claims

1. A sheet cosmetic comprising a sheet substrate and a cosmetic composition impregnated in the sheet substrate, The cosmetic composition is a sheet cosmetic comprising the following components A, B and C: Component A: Ethanol Ingredient B: Menthol Component C: Camphor

2. 2. The sheet cosmetic according to claim 1, wherein, in 100% by mass of the cosmetic composition, the content of the component A is 30 to 50% by mass, the content of the component B is 0.2 to 1% by mass, and the content of the component C is 0.004 to 0.6% by mass.

3. The sheet cosmetic according to claim 1 or 2, wherein the cosmetic composition further comprises the following Component D: Component D: Sugar alcohol

4. 3. The sheet cosmetic according to claim 1, wherein the impregnation amount of the cosmetic composition per 100 parts by mass of the sheet substrate is 200 to 700 parts by mass.

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