Facial sheet mask

Abstract

To provide a technique for giving a preferable cooling sensation to the skin and suppressing irritation by using a sheet-like cosmetic.SOLUTION: Provided is a facial sheet mask in which a sheet base material is impregnated with a composition comprising menthol in amount of 0.001 mass% to 0.008 mass% as component (A) and water as component (B).SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a facial sheet mask. [Background technology]

[0002] Patent Document 1 (JP Patent Publication No. 2004-131388) describes a technique relating to sheet-type cosmetics. The document describes a technique for solving the problem of providing an external skin preparation that dramatically enhances the cooling sensation, and the cooling sensation is sustained, and also dramatically enhances the penetration sensation of the whitening agent, the whitening effect, etc. (paragraph 0005), and describes a nonwoven fabric-impregnated cosmetic preparation (mask) containing 0.0001 to 0.10 mass % of menthyl lactate and a whitening agent (claims 1 and 3). The document also evaluates the sustained cooling sensation after the mask is applied and then removed (paragraph 0030). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-131388 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present inventors have studied the technology described in the above Patent Document 1 and found that there is room for improvement in terms of obtaining a pleasant cooling sensation and suppressing the sensation of irritation when applying a sheet-type cosmetic preparation. Therefore, the present invention provides a technology for imparting a pleasant cooling sensation to the skin while suppressing the sensation of irritation using a sheet-like cosmetic material. [Means for solving the problem]

[0005] According to the present invention, A facial sheet mask is provided in which a sheet substrate is impregnated with a composition containing the following components (A) and (B): (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water

[0006] According to the present invention, There is provided an aqueous composition which contains the following components (A) and (B) and is used as the composition of the facial sheet mask of the present invention. (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water

[0007] According to the present invention, there is provided a package in which the facial sheet mask of the present invention is contained within a packaging material.

[0008] Further, according to the present invention, There is provided a method for imparting a cooling sensation to the face, comprising applying the facial sheet mask of the present invention to facial skin. Effect of the Invention

[0009] According to the present invention, a technology can be provided that uses a sheet-like cosmetic material to provide a pleasant cooling sensation to the skin while suppressing any irritating sensation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described. Each component contained in the composition may be contained alone or in combination of two or more kinds. In addition, in this specification, unless otherwise specified, "~" indicating a numerical range indicates from above to below, and both the upper limit and the lower limit are included.

[0011] (Facial sheet mask) In this embodiment, the facial sheet mask (hereinafter also simply referred to as a "sheet mask") is specifically applied to the skin of the face, and is specifically used to impart a cooling sensation to the face. The sheet mask is a sheet substrate impregnated with a composition containing the following components (A) and (B). (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water

[0012] In the present embodiment, a sheet mask is prepared by impregnating a sheet substrate with a composition containing a specific amount of component (A) together with component (B), thereby making it possible to suppress the sensation of irritation while providing a desirable cooling sensation when applied to the face. Each component will now be described in more detail. First, the composition will be described.

[0013] (composition) The composition to be impregnated into the sheet substrate is specifically a cosmetic composition. The composition may have any properties as long as it can be impregnated into the sheet substrate, and is preferably liquid at 25°C. The composition is preferably an aqueous composition, specifically, an aqueous composition containing water in an amount of 50% by mass or more based on the total composition.

[0014] (Component (A)) Component (A) is menthol. From the viewpoint of improving the balance between a preferable cooling sensation and suppression of irritation sensation when the sheet mask is applied to facial skin, component (A) is preferably 1-menthol.

[0015] From the viewpoint of improving the cooling sensation, the content of component (A) in the composition is 0.001% by mass or more, preferably 0.002% by mass or more, and more preferably 0.004% by mass or more, based on the total mass of the composition. In addition, from the viewpoint of suppressing irritation, the content of component (A) in the composition is 0.008 mass% or less, preferably 0.007 mass% or less, more preferably 0.006 mass% or less, and even more preferably 0.005 mass% or less, based on the total composition.

[0016] (Component (B)) Component (B) is water. The content of component (B) in the composition can be, for example, the remainder excluding components other than component (B) in the composition.

[0017] In addition, from the viewpoint of improving the solubility of the composition, the content of component (B) in the composition is preferably 50 mass% or more, more preferably 60 mass% or more, even more preferably 70 mass% or more, still more preferably 80 mass% or more, especially preferably 90 mass% or more, and especially preferably 95 mass% or more, based on the entire composition. Furthermore, from the viewpoint of improving the feeling of use, the content of component (B) in the composition is 99.999% by mass or less, preferably 99% by mass or less, more preferably 98.5% by mass or less, and even more preferably 98% by mass or less, based on the total mass of the composition.

[0018] The composition may also contain components other than components (A) and (B). (Polyhydric alcohol) The composition may further include a polyhydric alcohol. Examples of the polyhydric alcohol include polyhydric alcohols having from 2 to 8 carbon atoms and polymers thereof. Specific examples of polyhydric alcohols having 2 to 8 carbon atoms include one or more selected from the group consisting of ethylene glycol, diethylene glycol, glycerin, 1,3-propanediol, propylene glycol, dipropylene glycol, 1,3-butylene glycol (1,3-BG), isoprene glycol, sorbitol, and polymers thereof. The molecular weight of the polyhydric alcohol is, for example, 200 or less, preferably 150 or less, even more preferably 100 or less, and, for example, 50 or more.

[0019] From the viewpoint of improving the feeling during use, the polyhydric alcohol preferably contains one or more compounds selected from the group consisting of glycerin, 1,3-butylene glycol, and dipropylene glycol, and more preferably contains 1,3-butylene glycol.

[0020] From the viewpoint of improving the effect of suppressing the sensation of irritation, the content of the polyhydric alcohol in the composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, even more preferably 1.5% by mass or more, and especially preferably 1.8% by mass or more, based on the total mass of the composition. In addition, from the viewpoint of suppressing stickiness, the content of polyhydric alcohol in the composition is preferably 20 mass% or less, more preferably 10 mass% or less, even more preferably 8 mass% or less, even more preferably 5 mass% or less, and especially preferably 3 mass% or less, based on the entire composition.

[0021] (Menthol derivatives) The composition may further comprise a menthol derivative. Examples of the menthol derivative include one or more compounds selected from the group consisting of menthyl acetate, menthyl lactate, 1-menthyl glyceryl ether, and menthyl pyrrolidone carboxylic acid. From the viewpoint of improving the feeling when used, the menthol derivative is preferably menthyl lactate.

[0022] When the composition contains a menthol derivative, the content of the menthol derivative in the composition is, from the viewpoint of improving the cooling sensation, 0.0003% by mass or more, more preferably 0.0005% by mass or more, and even more preferably 0.0008% by mass or more. From the viewpoint of suppressing the sensation of irritation, the content of the menthol derivative in the composition is preferably 0.01% by mass or less, more preferably 0.005% by mass or less, even more preferably 0.003% by mass or less, and even more preferably 0.002% by mass or less, based on the total amount of the composition.

[0023] In addition, the mass ratio of menthol, i.e., component (A), to the menthol derivative (component (A) / menthol derivative) is preferably 0.5 or more from the viewpoint of providing a cooling sensation immediately after putting the mask on the face and maintaining the cooling sensation. From the viewpoint of suppressing the sensation of irritation, the above mass ratio (component (A) / menthol derivative) is preferably 20 or less, more preferably 10 or less, and even more preferably 4 or less.

[0024] The composition may also contain components other than those described above. For example, in addition to the above-mentioned components, the composition may contain an appropriate selection of components used in ordinary lotions, such as salts, fragrances, pigments, antioxidants, ultraviolet absorbers, vitamins, metal chelating agents, sebum suppressants, powders, astringents, skin softeners, surfactants, oils, etc., within the scope that does not impair the effects of the present invention.

[0025] Among these components, surfactants can be used, for example, as solubilizers for active ingredients. Specific examples of surfactants include nonionic surfactants, anionic surfactants, amphoteric surfactants, and cationic surfactants.

[0026] Examples of nonionic surfactants include one or more selected from the group consisting of polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil; polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tetraoleate; polyoxyethylene glycerin fatty acid esters such as polyoxyethylene glyceryl monoisostearate and polyoxyethylene glyceryl triisostearate; polyoxyethylene alkyl ethers such as polyoxyethylene octyldodecyl ether, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether and polyoxyethylene stearyl ether; polyoxyethylene alkyl phenyl ethers such as polyoxyethylene nonylphenyl ether; polyglycerin alkyl ethers; polyglycerin fatty acid esters; and sucrose fatty acid esters.

[0027] Examples of the anionic surfactant include one or more selected from the group consisting of polyoxyethylene alkyl sulfates such as sodium polyoxyethylene lauryl ether sulfate; polyoxyethylene alkyl ether phosphates such as sodium polyoxyethylene lauryl ether phosphate and sodium polyoxyethylene cetyl ether phosphate; alkyl sulfates; alkyl phosphates; and fatty acid salts.

[0028] The amphoteric surfactant may, for example, be at least one selected from the group consisting of alkyl betaines and alkyl amide betaines.

[0029] Examples of cationic surfactants include one or more selected from the group consisting of di-long chain alkyl quaternary ammonium salts, mono-long chain alkyl quaternary ammonium salts, di-long chain alkyl polyoxyethylene quaternary ammonium salts, bis(hydroxyalkyl) quaternary ammonium salts, and quaternary ammonium salts having an amide / ester bond. Here, the number of carbon atoms in the long chain alkyl is specifically 8 or more, and may be, for example, 26 or less.

[0030] When the composition contains a surfactant, the content of the surfactant in the composition is, for example, more than 0 mass%, preferably 0.05 mass% or more, and for example, 10 mass% or less, preferably 5 mass% or less, based on the total composition.

[0031] Next, the sheet base material will be described. (Sheet base material) In this embodiment, the sheet substrate constituting the sheet mask is not limited, and is a sheet-like support that can be impregnated with the composition.The sheet substrate is preferably a woven fabric or a nonwoven fabric.The sheet substrate may be a laminate (i.e., a laminated sheet), for example, a woven fabric laminate, a nonwoven fabric laminate, or a woven fabric and a nonwoven fabric laminate. The sheet substrate is preferably a sheet substrate containing a nonwoven fabric, more preferably a nonwoven fabric, from the viewpoints of improving the feeling of use, ease of processing, etc. Examples of the nonwoven fabric include spunbond nonwoven fabric, spunlace nonwoven fabric, thermal bond nonwoven fabric, needle punch nonwoven fabric, and stitch bond nonwoven fabric.

[0032] The fibers constituting the woven fabric or nonwoven fabric are not limited, and examples thereof include natural fibers, synthetic fibers, and semi-natural fibers. Examples of the fiber material include lyocell, cupra, rayon, acetate, acrylic, polyester, polyethylene, polypropylene, polyurethane, polyamide, cotton, pulp, and blends thereof. Other examples include sheets in which at least one of pulp, rayon, and cotton is reinforced with a thermoplastic resin such as polyethylene, polypropylene, or polyethylene terephthalate.

[0033] From the viewpoint of improving liquid retention, the sheet substrate is preferably a nonwoven fabric containing hydrophilic fibers, and more preferably a nonwoven fabric made of hydrophilic fibers. From a similar viewpoint, when the sheet substrate is a nonwoven fabric containing hydrophilic fibers and hydrophobic fibers, the mass ratio of the hydrophobic fiber content to the hydrophilic fiber content in the nonwoven fabric (hydrophobic fiber / hydrophilic fiber) is preferably 0 / 100 to 30 / 70.

[0034] Examples of hydrophilic fiber materials include cotton, pulp, hemp, rayon, etc. Among these, from the viewpoints of low price, good availability on the market, good adhesion to the skin and improved skin feel, and of obtaining a preferable firmness when the nonwoven fabric is impregnated with the composition, the hydrophilic fiber material includes one or more types selected from the group consisting of cotton, pulp, and rayon, more preferably includes one or two types selected from the group consisting of cotton and rayon, even more preferably includes cotton, and even more preferably is cotton.

[0035] From the viewpoint of improving the moist feeling on the skin, the content of hydrophilic fibers in the nonwoven fabric is preferably 70% by mass or more, more preferably 80% by mass or more, even more preferably 90% by mass or more, and even more preferably 95% by mass or more, based on the total mass of the nonwoven fabric. The content of hydrophilic fibers in the nonwoven fabric is specifically 100% by mass or less, and may be, for example, 99% by mass or less, based on the entire nonwoven fabric.

[0036] Examples of materials for hydrophobic fibers include polyolefins such as polyethylene (PE) and polypropylene (PP); polyesters such as polyethylene terephthalate; polyamides such as nylon; polyacrylonitrile; polyvinyl alcohol; and synthetic fibers such as polyurethane fibers. From the viewpoint of improving the strength of the nonwoven fabric, the hydrophobic fibers preferably contain polyolefin, more preferably contain at least one of PE and PP, and further preferably contain PE and PP.

[0037] The content of hydrophobic fibers in the nonwoven fabric is specifically 0% by mass or more based on the entire nonwoven fabric, and from the viewpoint of imparting a preferable firmness to the sheet mask, it is preferably 1% by mass or more, and more preferably 2% by mass or more. From the viewpoint of improving the moist feeling of the skin, the content of hydrophobic fibers in the nonwoven fabric is preferably 30 mass % or less, more preferably 20 mass % or less, even more preferably 10 mass % or less, and even more preferably 5 mass % or less, based on the total mass of the nonwoven fabric.

[0038] The sheet substrate may be embossed. The embossing process is not limited, and examples thereof include a method of pushing up the back surface to make it float (so that the back surface is recessed) and a method of applying a special ink to the front surface to form convex portions (so that the back surface is not recessed).

[0039] The sheet substrate can be manufactured by a known manufacturing method depending on the type of woven fabric, nonwoven fabric, etc. Also, a commercially available product can be used as the sheet substrate. Specific examples of commercially available sheet substrates include "COT ACE CO80S / A02" manufactured by Unitika Ltd., "COT ACE CO50S / A06" manufactured by Unitika Ltd., "COT ACE CO100S / A01" manufactured by Unitika Ltd., "ESCOTT CO80R / A02" manufactured by Unitika Ltd., and "PT-50" manufactured by Yamato Boseki Co., Ltd.

[0040] The basis weight of the sheet substrate is preferably 50 g / m from the viewpoint of improving liquid retention. 2 and more preferably 60 g / m 2 More preferably, 70 g / m 2 That's all. From the viewpoint of improving adhesion, the basis weight of the sheet substrate is preferably 120 g / m 2 More preferably, it is 110 g / m or less. 2 Less than 90 g / m, more preferably 2 The following is the result. The basis weight of the sheet substrate is determined according to JIS L 1913, by cutting the nonwoven fabric into a certain area, measuring its mass (g), and dividing this by 1 m 2 This can be calculated by converting it into mass.

[0041] The thickness of the sheet substrate is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.3 mm or more, from the viewpoints of improving the feel of the sheet and suppressing dripping. From the viewpoint of improving the feel of the sheet and suppressing dripping, the thickness of the sheet substrate is preferably 1.5 mm or less, and more preferably 0.7 mm or less. Here, the thickness of the sheet substrate is 20 gf / cm 2 It is obtained by measuring the load with a dial gauge.

[0042] Next, a method for producing the sheet mask will be described. A method for producing a sheet mask includes, for example, a step of preparing a composition, a step of preparing a sheet substrate, and a step of impregnating the sheet substrate with the composition.

[0043] In the step of preparing the composition, for example, the composition can be prepared by the following procedure: A solid component is added to an aqueous phase and dissolved by heating. After dissolution, the solid component is cooled, and other components are added and stirred to dissolve uniformly to obtain the composition.

[0044] In the step of impregnating the sheet substrate with the composition, for example, the sheet substrate can be immersed in the composition in a container such as an aluminum pouch.

[0045] From the viewpoint of improving adhesion to the skin, the impregnation rate of the composition is preferably 500% by mass or more, more preferably 550% by mass or more, even more preferably 600% by mass or more, and still more preferably 650% by mass or more, based on the mass of the sheet substrate. In addition, from the viewpoint of suppressing dripping from the sheet substrate, the impregnation rate of the composition is preferably 1000 mass % or less, more preferably 900 mass % or less, even more preferably 800 mass % or less, and even more preferably 750 mass % or less, based on the mass of the sheet substrate.

[0046] (packaging) In this embodiment, the package is, for example, a package in which the sheet mask of this embodiment is housed, and is preferably sealed. There are no restrictions on the material of the packaging body, and it can be, for example, a laminated film in which a barrier layer such as an aluminum sheet (aluminum foil) or a silica vapor deposition film is sandwiched between the layers and covered on both sides with synthetic resin film layers made of, for example, polyethylene, polyethylene terephthalate, polypropylene, polyester, polyamide, polyvinyl chloride, etc. Furthermore, there is no limitation on the shape of the package, and it can be, for example, a pillow bag, a gusset bag, a pouch, a box, a bottle, a jar, a tray container, or the like. One packaging material may contain one sheet mask, or two or more sheet masks. The sheet mask is stored, for example, in a folded or rolled state.

[0047] Next, a method of using the sheet mask will be described. The method of using the sheet mask includes, for example, applying the sheet mask to facial skin, and more specifically, attaching the sheet mask to facial skin. The sheet mask may be applied to any part of the face, such as around the eyes, forehead, or cheeks, and may cover at least one of these areas.

[0048] By using the sheet mask of the present embodiment, for example, it is possible to impart a desirable cooling sensation to the facial skin while suitably suppressing irritation to the skin. Furthermore, by using the sheet mask of the present embodiment, it is possible to improve the balance between providing a cooling sensation to the facial skin, sustaining the cooling sensation, suppressing the sensation of irritation, and the adhesion of the sheet when applying the sheet mask, for example.

[0049] Although the embodiments of the present invention have been described above, these are merely examples of the present invention, and various configurations other than those described above can also be adopted. EXAMPLES

[0050] (Examples 1 to 14, Comparative Examples 1 and 2) The compositions of each example were prepared according to the formulations shown in Tables 1 and 2, and the sheet substrates were impregnated with the compositions to obtain sheet masks of each example. In Tables 1 and 2, the amount of each component is the active amount (unit: mass %).

[0051] (Method of preparing the composition) Menthol (and menthyl lactate) was added to 1,3-BG, and the mixture was stirred to dissolve uniformly. Purified water was then added thereto, and the mixture was stirred to dissolve uniformly, to obtain the composition of each example.

[0052] (Sheet mask manufacturing method) In an aluminum pouch, the nonwoven fabric (sheet substrate) of each example shown in Tables 1 and 2 was immersed in the composition obtained in each example to thoroughly soak in the composition, and then the composition was spread to obtain a sheet mask. The impregnation rate of the composition is shown in Tables 1 and 2. The nonwoven fabrics used in each example are as follows: Nonwoven fabric 1: COT ACE CO80S / A02, manufactured by Unitika Ltd., 100% cotton, basis weight 80g / m 2 , thickness 0.42mm Nonwoven fabric 2: COT ACE CO50S / A06, manufactured by Unitika Ltd., cotton / rayon=70 / 30, basis weight 50g / m 2 , thickness 0.39mm Nonwoven fabric 3: COT ACE CO100S / A01, manufactured by Unitika Ltd., cotton / rayon=70 / 30, basis weight 120g / m 2 , thickness 0.51mm Nonwoven fabric 4: Escot CO80R / A02, manufactured by Unitika Co., Ltd., cotton / rayon=70 / 30, basis weight 80g / m 2 , thickness 0.40mm Nonwoven fabric 5: PT-50, Yamatobo Co., Ltd., rayon / PP PE=80 / 20, basis weight 50g / m 2 , thickness 0.36mm

[0053] (Evaluation method) The sheet mask was applied to the entire cheek for 15 minutes. With the sheet mask applied, sensory evaluation was performed on "cooling sensation (cheeks)," "duration of cooling sensation," "suppression of irritation," and "adhesion of the sheet" according to the following criteria. The "cooling sensation (cheeks)" was evaluated immediately after the sheet mask was applied to the face. The "suppression of irritation" was evaluated 15 minutes after the sheet mask was applied to the face (immediately before the sheet mask was peeled off). The "suppression of irritation" was evaluated 5 minutes after the sheet mask was applied to the face (based on the knowledge that the irritation of menthol is felt strongly about 5 minutes after application). The evaluation value is the average value of two expert panelists. For each item, an evaluation value of 2.5 points or more was considered to be a pass.

[0054] (Cooling sensation (cheeks)) 1: I don't feel it 2: I feel it a little 3: Feel 4: Feels somewhat strong 5: I feel strongly

[0055] (Long-lasting cooling sensation) 1: Not persistent 2: Lasts a little 3: Persist 4: Somewhat long-lasting 5: Long-lasting

[0056] (Suppression of irritation) 1: I feel a strong sense of irritation 2: Somewhat strong stimulating sensation 3: Almost no irritation 4: No irritation 5: No irritation at all

[0057] (Sheet adhesion) 1: No adhesion 2: Slightly loose fit 3: Close contact 4: Slightly tight adhesion 5: Adhere firmly

[0058] [Table 1]

[0059] [Table 2]

[0060] As can be seen from Tables 1 and 2, in each Example, the sheet mask had an excellent balance of the effects of providing a cooling sensation to the facial skin, sustaining the cooling sensation, suppressing irritation, and providing a good adhesion to the skin.

Claims

1. A facial sheet mask comprising a sheet substrate impregnated with a composition containing the following components (A) and (B): (A) Menthol: 0.003% by mass or more and 0.008% by mass or less (B) Water 90% by mass or more

2. A facial sheet mask in which a sheet substrate is impregnated with a composition containing the following components (A) and (B) (excluding facial sheet masks impregnated with a composition containing one or more of xanthan gum, gellan gum, and carrageenan). (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water 90% by mass or more

3. A facial sheet mask comprising a sheet substrate impregnated with a composition containing the following components (A), (B) and (C): (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water (C) Menthol derivative: 0.0003% by mass or more and 0.003% by mass or less

4. A facial sheet mask as described in claim 2 or 3, wherein the content of component (A) is 0.003 mass% or more and 0.008 mass% or less relative to the total composition.

5. The sheet substrate has a basis weight of 50 g / m ２ 120g / m or more ２ 5. The facial sheet mask according to claim 1, wherein:

6. the sheet substrate is a nonwoven fabric containing hydrophilic fibers and hydrophobic fibers, 6. The facial sheet mask according to claim 1, wherein a mass ratio of the content of the hydrophobic fibers to the content of the hydrophilic fibers in the nonwoven fabric (hydrophobic fibers / hydrophilic fibers) is 0 / 100 to 30 / 70.

7. 7. The facial sheet mask according to claim 1, wherein an impregnation rate of the composition into the sheet substrate is from 500% by mass to 1000% by mass.

8. The facial sheet mask according to claim 1 , which is for imparting a cooling sensation to the face.

9. An aqueous composition comprising the following components (A) and (B), which is used as the composition to be impregnated into the sheet substrate of the facial sheet mask described in claim 1. (A) Menthol: 0.003% by mass or more and 0.008% by mass or less (B) Water 90% by mass or more

10. An aqueous composition (excluding compositions containing one or more of xanthan gum, gellan gum, and carrageenan), comprising the following components (A) and (B) and used as the composition to be impregnated into the sheet substrate of the facial sheet mask described in claim 2: (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water 90% by mass or more

11. An aqueous composition comprising the following components (A), (B) and (C), which is used as the composition to be impregnated into the sheet substrate of the facial sheet mask described in claim 3. (A) Menthol: 0.001% by mass or more and 0.008% by mass or less (B) Water (C) Menthol derivative: 0.0003% by mass or more and 0.003% by mass or less

Images