Sheet-type mask gel composition, mask sheet containing the same, and method for preparing the mask sheet

Abstract

Provided are a sheet-type mask gel composition, a mask sheet comprising the same, and a method for preparing the mask sheet. The sheet-type mask gel composition includes an emulsifying composition, a polyol, and a thickening agent. The emulsifying composition includes: "at least one selected from the group consisting of fats, oils, waxes, and combinations thereof"; "a surfactant"; and "a polyol".

Description

Technical Field

[0001] This description relates to a sheet-type mask gel composition, a mask sheet containing the same, and a method for preparing the mask sheet. Background Art

[0002] The fundamental role of human skin is to protect multiple parts of the body from external stimuli. However, presenting a clean, shiny, translucent, smooth, and healthy skin through beauty is also an important factor that skin can embody by its very existence. As mentioned above, in skin beauty, especially exposed areas such as the face or neck are factors that can be actively presented to the outside, so there is a trend of a sharp increase in the demand for beauty products such as mask sheets.

[0003] As described above, cosmetic mask sheets are prepared by adding lotion or functional ingredients to a base sheet, and have effects such as relieving skin tension, moisturizing the skin, enhancing elasticity, delaying wrinkles, removing waste and adsorbed pollutants on the skin surface, removing aged cutin, removing excess sebum, enhancing smoothness, providing a psychological stabilizing effect, and supplying nutrient components. Since it meets the desires of humans who want to maintain clean and healthy skin, the market for mask sheets is gradually growing, and with the emergence of skin damage problems caused by environmental pollution, the market size has recently grown further rapidly.

[0004] In particular, recently, hydrogel mask sheets with a three-dimensional hydrophilic polymer network structure have been very popular in order to improve water retention. However, hydrogel mask sheets are not suitable for delivering liposoluble active ingredients due to the aqueous phase, and contain a large amount of water, which has the disadvantage of being vulnerable to microbial contamination. In particular, the gel adhesion is low and it is not easy to adhere to the skin, resulting in a weak problem of delivering active ingredients to the skin. In particular, recently, with the development of the layering beauty method or layered makeup method, as an alternative to simply attaching a mask sheet to the bare skin, a makeup method in which a water-soluble / liposoluble composition such as cream or essence is first applied to the bare skin and then a mask sheet is attached is gradually becoming popular. When the existing mask sheets are attached to the skin coated with cream or essence, the adhesion is greatly reduced. In this regard, it is no exaggeration to say that almost all currently commercially available mask sheets are not suitable for use in the layering beauty method. Further, when the mask sheet is immediately attached to the skin after opening it, there is no problem. However, after a certain period of time, when the mask sheet is attached to the skin, all the water in the mask sheet has evaporated, and there may be a problem that the active ingredients contained in the mask sheet cannot be delivered to the skin. Moreover, most currently commercially available mask sheets become dry immediately when placed at room temperature for a while, so they cannot fully perform the function of a mask sheet.

[0005] In addition, when impregnating a high content of lipids, oils, waxes, etc. into the mask sheet in order to sufficiently deliver active ingredients to the skin, the lipids, oils, waxes, etc. seep out to the outside during the process of the mask sheet flowing through, so in general mask sheets, only a small amount of lipids, oils, waxes, etc. that are active ingredients can be impregnated.

[0006] Therefore, it is required to develop a mask sheet with new components that can solve the above problems. SUMMARY OF THE INVENTION

[0007] TECHNICAL PROBLEM

[0008] According to an embodiment, provided is a sheet-type mask gel composition, a mask sheet including the same, and a method for preparing the mask sheet, which can smoothly impregnate a high content of lipids, oils, waxes as compared with existing mask sheets, have excellent adhesiveness, have excellent moisturizing maintenance efficacy after removing the mask sheet from the skin, and can also be used in a mask sheet lamination beauty method.

[0009] TECHNICAL SOLUTION

[0010] According to an embodiment, provided is a sheet-type mask gel composition, which includes an emulsifying composition, a polyol, and a thickener, and the emulsifying composition includes: "at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof"; "a surfactant"; and "a polyol".

[0011] The surfactant may include two or more fatty acids.

[0012] The surfactant including two or more fatty acids may include lecithin.

[0013] The emulsifying composition may further include a fatty alcohol.

[0014] The fatty alcohol may be a compound having 16 or 18 to 22 carbon atoms.

[0015] As an example, the emulsifying composition may include cetearyl alcohol and / or behenyl alcohol in the lecithin of the surfactant including two or more fatty acids.

[0016] The oil may have low compatibility with the polyol.

[0017] The oil having low compatibility with the polyol may include at least one selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils.

[0018] It may be that, relative to the total amount of the emulsified composition, the polyol contains 50% by weight to 80% by weight, at least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof contains 1% by weight to 40% by weight, and the surfactant contains 0.1% by weight to 20% by weight.

[0019] At least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof may contain a higher content than the surfactant.

[0020] The emulsified composition may have a lamellar structure.

[0021] It may be that the emulsified composition is diluted with water, and the water-diluted emulsified composition is composed of particles having an average particle size of 300 nm to 400 nm.

[0022] It may be that, relative to the total amount of the sheet-type facial mask gel composition, the polyol contains 49% by weight to 90% by weight, the emulsified composition contains 5% by weight to 50% by weight, and the thickener contains 1% by weight to 10% by weight.

[0023] The emulsified composition may contain a higher content than the thickener.

[0024] The polyol may include glycerol, 1,3-butanediol, propylene glycol, polyethylene glycol, dipropylene glycol, propanediol, or a combination thereof.

[0025] The thickener may include xanthan gum, hyaluronic acid, carboxymethyl cellulose, polyacrylate, carboxymethyl starch, carboxymethyl chitosan, carboxymethyl dextran, or a combination thereof.

[0026] The sheet-type facial mask gel composition may satisfy the following Mathematical Formula 1:

[0027]

Mathematical Formula 1

[0028] 100 - (B / A × 100) < 10

[0029] (A: the weight of the gel obtained by gelling the gel composition immediately after arbitrarily processing it into a size of 5 cm × 5 cm × 1 mm,

[0030] B: the weight of the gel immediately after drying it at 45°C for 60 minutes after the above-mentioned arbitrary processing).

[0031] When the sheet-type facial mask gel composition is applied to the skin of a mammal after applying a water-soluble or lipid-soluble composition, the sheet-type facial mask gel composition may have a higher adhesiveness than when it is directly and separately applied to the skin of a mammal alone.

[0032] The sheet-type mask gel composition may further include a substance for improving wrinkles, a substance for whitening, a substance for improving skin allergies, or a combination thereof.

[0033] The sheet-type mask gel composition may further include an inorganic substance.

[0034] The inorganic substance may include titanium dioxide, zinc oxide, sulfur, calamine, clay, or a combination thereof.

[0035] The inorganic substance may contain 0.01% by weight or more based on the total amount of the gel composition.

[0036] The sheet-type mask gel composition may have an adhesiveness of 30 g / cm 2 or more.

[0037] According to another embodiment, there is provided a mask sheet including the sheet-type mask gel composition. A support may be attached to either side of the mask sheet.

[0038] The support may be a regenerated fiber such as cotton or rayon; stretchable polyurethane; an ester material including acetate, wool, polyethylene terephthalate, etc.; a non-woven fabric or a woven fabric made of fibers of polyethylene, nylon, polypropylene, or a combination thereof; oriented polypropylene; cast polypropylene; high-density polyethylene; low-density polyethylene; linear low-density polyethylene; or a support of a non-woven fabric with the above materials laminated in film form, etc.

[0039] A release film may be attached to the other side of the mask sheet to which the support is attached.

[0040] Any release film or its laminate commonly used in transdermal dosage forms such as masks may be used. For example, a film of polypropylene, polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, etc., or a paper laminated with the mentioned materials may be used.

[0041] The mask sheet may be an eye mask sheet.

[0042] The mask sheet may perform functions such as anti-blue light, allergy care, sebum absorption, etc.

[0043] According to yet another other implementation example, a method for preparing a facial mask sheet is provided, which includes: emulsifying at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof, a surfactant, and a polyol to prepare an emulsified composition; after stirring the emulsified composition together with a polyol and a thickening agent, uniformly applying the stirred material onto a release film; after uniformly applying the stirred material onto the release film, heating and cooling to carry out gelation; and attaching a support to the gelled side of the stirred material to prepare a facial mask sheet.

[0044] The method for preparing the facial mask sheet may further include a step of aging the gel attached to the support.

[0045] The heating may be carried out at a temperature of 70°C to 120°C for 2 minutes to 30 minutes.

[0046] The step of stirring the emulsified composition together with a polyol and a thickening agent may be a step of mixing a polyol, a thickening agent, and "a substance for improving wrinkles, a substance for whitening, a substance for improving skin allergies, or a combination thereof" together with the emulsified composition.

[0047] Advantages of the Invention

[0048] According to the facial mask sheet of the present invention, even after it is removed, the moisturizing retention function for the skin is excellent. Even when impregnated with lipids, oils, waxes, etc. in a high content, during the circulation process, the lipids, oils, waxes, etc. are not likely to ooze out to the outside of the facial mask sheet. Moreover, even when the facial mask sheet is attached to the skin and the lipids, oils, waxes, etc. are released onto the skin, the adhesion of the facial mask sheet to the skin will not be significantly reduced. Therefore, there is no inconvenience such as the facial mask sheet falling off the skin during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a graph showing the particle sizes of the particles constituting the emulsified compositions of Preparation Examples 1 to 3;

[0050] Figure 2 As a polarized light photograph of the emulsified composition of Preparation Example 1, a lamellar structure can be confirmed;

[0051] Figure 3 As a polarized light photograph of the gel composition of Preparation Example 1, a lamellar structure can be confirmed;

[0052] Figure 4 As a polarized light photograph after heating the gel composition of Preparation Example 1, a lamellar structure can be confirmed;

[0053] Figure 5is a graph showing the moisture increase rate of the skin area where the mask sheet according to Example 1 was attached for 6 hours after removal after being attached to the skin;

[0054] Figure 6 is a graph showing the results of the drying weight loss test of the mask sheet sample of Example 1 and the hydrogel mask sheet of Comparative Example 3, respectively;

[0055] Figure 7 is a graph showing the blue light transmittance of Examples 3 to 5;

[0056] Figure 8 is a picture showing the shape of the eye mask according to one implementation example;

[0057] Figure 9 is a graph showing the change in the brightness of the fundus before and after using the eye mask according to one implementation example (quasi L represents the brightness level, having a value between black 0 - white 100, and the higher the value, the closer it is to white);

[0058] Figure 10 and Figure 11 are photos separately showing the change in the brightness of the fundus before and after using the eye mask according to one implementation example;

[0059] Figure 12 is a graph showing the change in the moisture content of the fundus before and after using the eye mask according to one implementation example;

[0060] Figure 13 and Figure 14 are photos separately showing before and 2 weeks after using the essence and the mask sheet according to one implementation example on the neck;

[0061] Figure 15 and Figure 16 are photos separately showing before and 2 weeks after using the mask sheet according to one implementation example on the neck. Detailed Implementation Modes

[0062] Hereinafter, examples of the present invention will be described in detail so that those with ordinary knowledge in the technical field to which the present invention pertains can easily implement it. However, the present invention can be implemented in various different forms and is not limited to the examples described herein.

[0063] The terms used in this specification are defined considering the functions in the present invention, and they may vary depending on the intention of the user, operator, convention, etc. Therefore, the definition should be based on the content throughout this specification that describes the "mask sheet" according to the present invention.

[0064] In this specification, when referring to parts such as layers, films, regions, plates, etc. being "above" other parts, it includes not only the case where they are "directly" above other parts, but also the case where there is another part in between. Conversely, when referring to a certain part being "directly" above other parts, it means that there is no other part in between.

[0065] In this specification, maintaining adhesiveness means that when a gel composition or a facial mask sheet, etc. is attached to the skin of mammals such as humans, the gel composition or the facial mask sheet does not fall off from the attached skin, and even if the gel composition or the facial mask sheet is attached to the skin for a certain period of time, such as more than 30 minutes, such as more than 1 hour, such as more than 2 hours, such as more than 3 hours, preferably more than 4 hours, such as more than 5 hours, such as more than 6 hours, such as more than 7 hours, such as more than 8 hours, such as more than 9 hours, such as more than 10 hours, such as more than 11 hours, such as more than 12 hours, such as more than 24 hours, the gel composition or the facial mask sheet does not fall off from the attached skin. Specifically, in this specification, maintaining adhesiveness means that when a gel composition or a facial mask sheet, etc. is attached (adhesion area 100%) to the skin of mammals such as humans, the gel composition or the facial mask sheet does not fall off from the attached skin, and even if the gel composition or the facial mask sheet is attached to the skin for more than 30 minutes, more specifically more than 4 hours, the adhesion area of the gel composition or the facial mask sheet, etc. remains more than 70%.

[0066] In this specification, blue light may refer to visible light in the blue range with a wavelength of 380 nm to 550 nm.

[0067] Hereinafter, a sheet-type facial mask gel composition according to an implementation example will be described.

[0068] In order to improve the problems of existing non-woven facial mask sheets, hydrogel facial mask sheets have been developed and used until now. However, since hydrogels contain a large amount of water, their physical properties are weak and there is a possibility of being contaminated by microorganisms. Therefore, there are many problems in preparing products using them.

[0069] Specifically, the hydrogel mask sheet is prepared by using a composition in which a hydrophilic polymer and other raw materials are added to water or a composition in which the hydrophilic polymer is mixed with an aqueous solution containing other raw materials. The composition usually forms a crosslinked structure. However, the durability of the crosslinked structure is weak, resulting in problems such as a decrease in the physical properties of the finally obtained mask sheet, especially the tension or tensile strength. In addition, in order to enhance the durability of the crosslinked structure, additives are additionally added. In this case, harmful effects on the skin may be caused by the additives, or it is often the case that the mask sheet cannot be prepared due to changes in the viscosity of the composition. Moreover, since the hydrogel mask sheet contains a large amount of water, there is always a concern about microbial contamination, and there is also a problem that the mask sheet dries quickly when placed at room temperature. For this reason, consumers' requirements for mask sheets that are differentiated from existing hydrogels have increased, which has become the current situation. Further, recently, the layered beauty method has attracted much attention. However, in addition to the hydrogel mask sheet, all existing mask sheets have physical properties that are not suitable for application in the layered beauty method. The layered beauty method refers to a makeup method in which multiple compositions or mask sheets are sequentially used on the skin over time. Therefore, the conventional general method of using a mask sheet is to directly use the mask sheet on the bare skin. However, according to the recent layered beauty method, after applying a composition (such as a cream or essence) of a water-soluble or fat-soluble component to the skin, and then attaching the mask sheet, the active ingredients in the mask sheet and the cream or essence together achieve a synergistic effect (for example, functional effects such as improving wrinkles and whitening in a shorter time). However, when using the layered beauty method, the mask sheet also needs to have excellent adhesiveness when used on the skin coated with the cream or essence. However, all currently known hydrogel mask sheets have physical properties of reduced adhesiveness when using the layered beauty method.

[0070] That is, currently, a variety of products (toners, lotions, creams, etc.) for skin beauty are widely used, and in the case where the demand for new customer experiences and beauty methods is continuously increasing, the existing hydrogel mask sheets with acrylic acid as the main component and containing a large amount of water are difficult to meet the new customer needs.

[0071] In addition, most commercially available mask sheet products (not hydrogels) that claim to have excellent adhesiveness are in the form of oily gel formulations using hydrophobic adhesive matrices or silicone-based silicone types. The mask sheets of these formulations only have excellent adhesiveness to the bare skin, but have insufficient adhesiveness to the skin after applying toner, lotion, cream, etc., and are thus prone to falling off and difficult to adhere for a long time. Therefore, they are limited in fulfilling the essential role of a mask sheet that needs to fully deliver active ingredients to the skin. Additionally, in the case of oily gel formulations, etc., hydrophilic components such as polyols are fully mixed during use, and over time, the oil is exuded due to these hydrophilic components such as polyols, resulting in a significant decrease in adhesiveness over time. Therefore, most of them have problems in terms of the sense of use. That is, most commercially available mask sheet products (not hydrogels) that claim to have excellent adhesiveness have excellent initial adhesiveness, rather than continuously maintaining excellent adhesiveness during use.

[0072] However, the sheet-type mask gel composition according to one implementation example uses polyols and a thickening agent as the matrix. Among them, after first preparing an emulsified composition, it is stirred together with the polyols and the thickening agent. Therefore, even if the gel composition is placed at room temperature, for example, at a temperature of 15°C to 45°C for 24 hours, it can maintain adhesiveness and the adhesiveness itself is very excellent, making it easy to impregnate active ingredients. Moreover, it can be used not only alone but also after using existing leave-on products (toner, lotion, cream, etc.). Additionally, different from the hydrogel formulation, it does not contain a large amount of water (or does not contain water at all), so there is no feeling of coldness when attached to the skin. Different from the oily gel formulation, it does not have a stuffy feeling and is comfortable, and can be produced at a low cost. It has the advantage of being able to impregnate both hydrophilic and hydrophobic active ingredients, and contains a large amount of polyols (for example, the polyols can account for 60% to 98% by weight, for example, 60% to 95% by weight, for example, 60% to 90% by weight relative to the total amount of the sheet-type mask gel composition). Therefore, it is easy to commercialize even without particularly using preservatives.

[0073] The sheet-type mask gel composition according to one implementation example contains an excessive amount of polyols and a thickening agent to ensure a moisturizing feeling and a soft feeling, and effectively deliver active ingredients. Additionally, the thickening agent may include a carboxyl group, and the carboxyl group in the thickening agent reacts with the hydroxyl group of the polyol, significantly reducing moisture during the preparation of the gel composition, and an insoluble gel can be formed. The gel has a very high adhesiveness and is easily attached to the skin, and has an excellent effect of delivering active ingredients to the skin.

[0074] In particular, since the sheet-type mask gel composition according to one implementation example includes an emulsified composition, it must include lipids, oils, waxes, or a combination thereof. While they exude from the mask sheet at skin temperature, they transfer active ingredients to the skin. At this time, the exuded lipids, oils, waxes, etc. move between the mask sheet and the skin, and it is predicted that the adhesion of the mask sheet may be reduced. Even so, the adhesion of the mask sheet according to one implementation example is very excellent.

[0075] On the one hand, lipids, oils, waxes, etc. are used to prepare the mask sheet, whereby active ingredients can be effectively transferred from the mask sheet to the skin through the lipids, oils, and / or waxes. Even so, during the circulation process, once the lipids, oils, and / or waxes exude, the quality of the mask sheet is reduced (problems such as the release film being contaminated due to the exuded oils, etc., or not being able to impregnate the required amount of efficacy ingredients until the consumer uses it). Therefore, the sheet-type mask gel composition impregnated with lipids, oils, and / or waxes requires excellent impregnation stability of lipids / oils / waxes during the circulation process. However, the fact is that the impregnation stability has not been effectively ensured so far. Therefore, most of the currently commercially available adhesive mask sheets containing oils, etc. only impregnate a very small amount (for example, less than 1% by weight relative to the total amount of the sheet-type mask gel composition) of the oils. In addition, only impregnating, or using ordinary emulsification techniques when preparing the adhesive sheet-type mask, a sheet-type mask gel composition containing a large amount of oil can also be prepared. However, in this case, since the average particle size of the gel emulsion particles is as large as the micron unit, the gel emulsion particles are trapped in the gel structure, and ultimately the gel emulsion particles have no effect on the skin and are meaningless for skin beauty.

[0076] In addition, when the oils, esters, and waxes are solids at room temperature, the temperature needs to be raised in the sheet-type mask gel composition in this article to be integrally mixed into the composition. However, when the temperature is raised, the composition crosslinks and hardens, so that a sheet type is not formed. At a low temperature, sufficient emulsification cannot be achieved, so that during the circulation process, it exudes from the mask sheet and reduces the stability. Therefore, it is difficult to provide a sheet-type mask gel composition containing an excessive amount (for example, 5% by weight, for example, 10% by weight or more relative to the total amount of the sheet-type mask gel composition) of oils, lipids, and waxes.

[0077] On this basis, the mixed components such as the impregnated oils, lipids, and / or waxes exude from the mask sheet at skin temperature, and the mixed components such as the oils, lipids, and / or waxes move between the mask sheet and the skin. At this time, the adhesion of most mask sheets is reduced, so the development of the sheet-type mask gel composition is not easy.

[0078] However, according to one implementation example, even when starting to deliver oils or the like, the adhesion force on the skin is not reduced, so there is no inconvenience such as the mask sheet falling off the skin during use. That is, the sheet-type mask gel composition according to one implementation example contains lipids, oils, and / or waxes that can effectively deliver active ingredients in the form of an emulsified composition without containing them themselves. Therefore, it can be excessively impregnated with the lipids, oils, and / or waxes (excellent impregnation stability), and during the circulation process, the lipids, oils, and / or waxes are not effectively released, and are only effectively released at the skin temperature after being attached to the skin. Even for the exuded lipids, oils, and / or waxes, the adhesive force is very excellent during the use of the mask sheet, and even after removing the mask sheet, the skin moisturizing power is maintained efficiently for a long time. This is possible because instead of using a thickening agent, a surfactant is used to emulsify the lipids, oils, and / or waxes, and after preparing the emulsified composition, a thickening agent or the like is added thereto for gelation to form a gel composition. That is, the emulsified composition may include: "at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof"; "a surfactant"; and "a polyol" (or the emulsified composition may be composed of "at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof", "a surfactant", and "a polyol").

[0079] For example, the surfactant may include two or more fatty acids.

[0080] When not using a surfactant with two or more fatty acids, for example, when using a surfactant with one fatty acid, the viscosity of the gel composition becomes low. In this case, the dosage form becomes unstable, so it may be difficult to prepare the mask sheet. In addition, the stability of the gel composition decreases, and at high temperatures, the lipids, oils, and / or waxes may easily exude, causing phase separation. For the above reasons, the active ingredients cannot be effectively delivered from the mask sheet to the skin, and even after removing the mask sheet, the duration of the skin moisturizing power may be short.

[0081] For example, the surfactant including two or more fatty acids may be lecithin.

[0082] The emulsified composition may further include a fatty alcohol, for example, a fatty alcohol having 16 to 22 carbon atoms, such as a fatty alcohol having 16 carbon atoms or a fatty alcohol having 18 to 22 carbon atoms (for example, a fatty alcohol having 16 carbon atoms, a fatty alcohol having 18 carbon atoms, a fatty alcohol having 22 carbon atoms, etc.).

[0083] For example, the emulsified composition may further include cetearyl alcohol, behenyl alcohol, or a combination thereof in the lecithin of the surfactant including two or more fatty acids.

[0084] For example, when the fatty acid is two or more surfactants, examples include Polyglyceryl-3 Methylglucose Distearate / Cetearyl Glucoside / Methyl Glucoside Sesquistearate / Butylene Glycol, Polyglyceryl-3 Methylglucose Distearate, Sorbitan Sesquioleate, Hydrogenated Lecithin, Hydrogenated Lecithin / C12-16 Alcohols / Palmitic Acid, Lecithin, Cetearyl Alcohol*Glyceryl Stearate*Stearic acid*Hydrogenated Lecithin*Polyglyceryl-3 Methylglucose Distearate, etc. However, it is not necessarily limited thereto.

[0085] As the fatty acid being two or more surfactants, it can be used alone or two or more can be used together. When using Lecithin and other alcohols (such as Cetearyl Alcohol, Behenyl Alcohol or a combination thereof, etc.) together as the fatty acid being two or more surfactants, the Lecithin can have a lower content than the other alcohols. For example, when Lecithin and others as the fatty acid being two or more surfactants include all of Cetearyl Alcohol and Behenyl Alcohol, the Cetearyl Alcohol can have a higher content than the Behenyl Alcohol. In this case, even if the emulsified composition reacts with the polyols, thickeners, etc. described later, its form will not be destroyed and can be stably maintained in the final composition.

[0086] As the lipids and waxes, examples include shea butter, Floraester 60, rice butter, etc. However, it is not necessarily limited thereto.

[0087] As the oil, an oil having low compatibility with the polyol such as glycerol is preferably used. When the oil has good compatibility with the polyol, it is not only difficult to prepare, but even if prepared, since it has good compatibility with the polyol, the oil is not likely to exude from the mask sheet, and it may be difficult to deliver the active ingredient to the skin. For example, the oil having low compatibility with the polyol may include at least one selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils, but is not necessarily limited thereto.

[0088] For example, as the oil, almond oil, avocado oil, beeswax, Brazil nut oil, castor oil, jojoba oil, mineral oil, olive oil, tocopherol, MCT oil (Medium Chain Triglyceride oil; medium chain triglyceride oil) having 6 to 12 carbon atoms, hydrogenated polyisobutene, hydrogenated polydecene, hydrogenated C6-14 polyolefin, squalane, isopropyl myristate, isopropyl palmitate, cetyl octanoate, decyl cocoate, polydimethylsiloxane, or a combination thereof can be cited, but is not necessarily limited thereto. For example, as specific examples of the MCT oil, caproic acid having 6 carbon atoms, caprylic acid having 8 carbon atoms, capric acid having 10 carbon atoms, lauric acid having 12 carbon atoms, or a combination thereof can be cited, but is not necessarily limited thereto.

[0089] For example, the emulsifying composition may include cetearyl alcohol and behenyl alcohol together with lecithin as a surfactant, and the surfactant, cetearyl alcohol, and behenyl alcohol may be contained in an amount of 0.1% by weight to 20% by weight based on the total amount of the emulsifying composition.

[0090] For example, based on the total amount of the emulsifying composition, the polyol may be contained in an amount of 50% by weight to 80% by weight, at least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof may be contained in an amount of 1% by weight to 40% by weight, and the surfactant may be contained in an amount of 0.1% by weight to 20% by weight.

[0091] For example, at least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof may be contained in a higher content than the surfactant.

[0092] For example, the emulsifying composition may have a lamellar (Maltese Cross) structure. Before the emulsifying composition is gelled by a thickener, when observed by polarized light, a lamellar structure is observed (when observed by polarized light, a shiny structure is observed, and this structure is the lamellar structure. Refer to Figure 2)。 Further, the lamellar structure can maintain the structure even when the emulsified composition is mixed with a polyol and a tackifier and gelled, or after gelation and then heated (refer to Figure 3 and Figure 4 ).

[0093] Generally, the lamellar structure has a structure similar to that of the skin cutin layer, so it strengthens the skin barrier and improves the skin moisturizing ability. In addition, it has high affinity for the skin and high skin cutin layer permeability, enabling active ingredients used for skin whitening or wrinkle improvement to reach the dermis layer, and can adjust the skin penetration time of the active ingredients and sustain their efficacy.

[0094] It can be that the emulsified composition is diluted with water, and the water-diluted emulsified composition is composed of particles with an average particle size of 300 nm to 400 nm. By observing the emulsified composition itself without being diluted with water through a microscope, a lamellar structure in the order of several micrometers is also observed. When it is diluted with an excessive amount of water, the emulsified composition is dispersed into particles with a bimolecular film structure, resulting in a smaller particle size. Therefore, when measuring the average particle size after diluting the emulsified composition with water, if the average particle size is in the range of 300 nm to 400 nm, it can be easily inferred that the emulsified composition has a lamellar structure. In addition, for an emulsified composition with a lamellar structure having the above-mentioned average particle size, even after mixing a polyol and a tackifier and then heating, the structure of the emulsified composition is not damaged and has excellent stability, and oils, fats, and / or waxes may not easily ooze out.

[0095] When using an emulsified composition with an average particle size of the particles constituting the emulsified composition exceeding 300 nm to 400 nm, compared with the case of using an emulsified composition composed of particles with an average particle size of 300 nm to 400 nm, the high-temperature stability of the gel composition decreases, and at high temperatures, the fats, oils, and / or waxes easily ooze out. Thus, when actually using a mask sheet, the amount of fats, oils, and / or waxes impregnated in the mask sheet is small and it is not easy to transfer the active ingredients. Moreover, after removing the mask sheet, moisture quickly removes from the skin, and dryness can be easily felt.

[0096] For example, it can be that in a sheet-type mask gel composition according to an embodiment, relative to the total amount of the sheet-type mask gel composition, the polyol contains 49% to 90% by weight, the emulsified composition contains 5% to 50% by weight, and the tackifier contains 1% to 10% by weight.

[0097] For example, the emulsified composition can contain a higher content than the tackifier.

[0098] The polyol imparts a moisturizing feeling and a soft feeling to the skin through multiple hydroxyl groups, and any common polyol compound can be used without particular limitation. For example, the polyol may include glycerol, 1,3-butanediol, propylene glycol, polyethylene glycol, dipropylene glycol, propane diol, or a combination thereof, but is not limited thereto.

[0099] The polyol may be contained in an excessive amount. For example, relative to the total amount of the sheet-type mask gel composition, it may be contained in an amount of 49% to 98% by weight, such as 49% to 95% by weight, such as 49% to 90% by weight. When the polyol is contained in this range, a moisturizing feeling and a soft feeling can be ensured while ensuring a refreshing feeling during use. For example, when the polyol is contained in an amount less than 49% by weight relative to the total amount of the sheet-type mask gel composition, there is a concern that the moisturizing feeling and the soft feeling may become lower. When it is contained in an amount exceeding 98% by weight, the moisturizing feeling and the soft feeling can be improved, but a sticky or stuffy feeling during use may be generated, so it is not preferred.

[0100] Any generally known thickening agent can be used without particular limitation. For example, the thickening agent may contain one or more carboxyl groups. The thickening agent can function to increase the viscosity of the sheet-type mask gel composition.

[0101] The thickening agent may include xanthan gum, hyaluronic acid, carboxymethyl cellulose, polyacrylate, carboxymethyl starch, carboxymethyl chitosan, carboxymethyl dextran, or a combination thereof, but is not limited thereto.

[0102] The thickening agent may be contained in an amount of 0.01% to 20% by weight relative to the total amount of the sheet-type mask gel composition, such as 1% to 15% by weight, such as 1% to 10% by weight. When the content of the thickening agent is within this range, the effect of increasing the viscosity of the gel composition can be excellent while the feeling during use is also excellent. For example, when the thickening agent is contained in an amount less than 0.01% by weight relative to the total amount of the sheet-type mask gel composition, the effect of increasing the viscosity of the gel composition may be weak. When it is contained in an amount exceeding 20% by weight, the viscosity of the gel composition may become excessively high, resulting in a reduced feeling during use or difficulty in filling, so it is not preferred.

[0103] The sheet-type mask gel composition according to one implementation example, or a mask sheet containing the same, contains a very small amount of moisture or no moisture at all. This is because in the gel composition, water is contained in a small amount or not at all, being less than 10% by weight, for example less than 5% by weight, relative to the total amount of the overall gel composition, and the moisture is further removed by the reaction of polyhydric alcohols and thickeners as the remaining components. As described above, by forming the gel composition using a small amount of water or no water at all, the gel composition according to one implementation example and the mask sheet containing the same can effectively deliver active ingredients through lipids, oils, and / or waxes, etc. In addition, since it contains almost (completely) no moisture, it is highly resistant to microbial contamination, has a higher adhesive force compared to hydrogels, etc., and thus can be easily attached to the skin, and has an excellent effect of delivering active ingredients to the skin.

[0104] For example, the sheet-type mask gel composition according to one implementation example may satisfy the following Mathematical Formula 1:

[0105]

Mathematical Formula 1

[0106] 100 - (B / A × 100) < 10

[0107] (A: The weight of the gel obtained by gelifying the gel composition just after arbitrarily processing it into a size of 5 cm × 5 cm × 1 mm,

[0108] B: The weight of the gel just after the above-mentioned arbitrary processing after drying at 45°C for 60 minutes).

[0109] In order to maintain the adhesive force of the gel composition and the mask sheet containing the same for a long time, it is important to maintain the initial components during attachment. However, in existing hydrogels or general mask sheets, etc., moisture volatilizes from the completed hydrogel or the mask sheet itself during attachment, resulting in a decrease in adhesive force, so they are not suitable for long-term use, and are even less suitable when used subsequently after using existing leave-on products.

[0110] However, during attachment, even if lipids, oils, and / or waxes exude and move onto the skin, the lipids, oils, and / or waxes are contained in the gel composition in the form of an emulsified composition constituting the gel composition in the sheet-type mask gel composition according to one implementation example, and the adhesive force can be well maintained. By comparing the initial weight just after removing the release film after removing the packaging of the gel composition or the mask sheet and exposing it to the outside with the weight after a certain period of time, and confirming the drying amount, it can be confirmed that the initial adhesive force is easily maintained.

[0111] Specifically, when the mathematical formula 1 is satisfied, the initial adhesive force is well maintained. Therefore, even when attached for a long time, such as 30 minutes or more, such as 1 hour or more, such as 2 hours or more, such as 3 hours or more, preferably 4 hours or more, such as 5 hours or more, such as 6 hours or more, such as 7 hours or more, such as 8 hours or more, such as 9 hours or more, such as 10 hours or more, such as 11 hours or more, such as 12 hours or more, such as 24 hours, it can be considered that the gel composition or the mask sheet almost maintains the same level of adhesion as before attachment.

[0112] Then, after applying a water-soluble or oil-soluble composition (such as existing rinse-free products, etc.) to the skin of a mammal with the gel composition or mask sheet that satisfies the mathematical formula 1, and then applying the sheet-type mask gel composition or attaching the mask sheet, compared with the case of directly applying or attaching the sheet-type mask gel composition or mask sheet alone to the skin of a mammal, it can have the same or higher adhesion at least at the level of 80% of the initial adhesive force (100%). As described above, when using existing rinse-free products, etc. and then using the gel composition or mask sheet, the adhesion of the gel composition or mask sheet becomes more excellent because the components in the composition of the gel composition or mask sheet hardly change even over time. That is, when other existing gel mask sheets are applied with other compositions at the adhesion part due to the application of rinse-free products, etc., the adhesion of the mask sheet itself decreases. On the contrary, according to one embodiment, compared with using the mask sheet alone, when using existing rinse-free products, etc. and then using the mask sheet, it has the characteristic of more excellent adhesion. When existing hydrogels or general mask sheets are removed from the packaging for use (for attachment to the skin) and exposed to the outside, the adhesion force varies due to rapid weight loss. With the addition of moisture in the rinse-free product, the existing mask sheet instead hinders the expression of the adhesion force. Therefore, when attaching a hydrogel or general mask sheet after using existing rinse-free products, etc., compared with using it alone, the adhesion force itself decreases significantly. Therefore, it is difficult to use it in the layered beauty method of applying a cosmetic (cosmetic) composition and then attaching a mask sheet, etc. For example, the sheet-type mask gel composition according to one embodiment or the mask sheet containing it can have 30 g / cm 2 or more, such as 30 g / cm 2 to 150 g / cm 2 、such as 60 g / cm 2 to 150 g / cm 2Adhesion. The adhesion is the adhesion when using the sheet-type mask gel composition alone or a mask sheet containing it. When using the sheet-type mask gel composition or a mask sheet containing it after using a leave-on product such as a cream, the adhesion can become higher. For example, when using the layered beauty method, the adhesion can be about 40 g / cm 2 to 60 g / cm 2 higher than that when used alone.

[0113] The adhesion of 30 g / cm 2 or more is a value higher than the adhesion of the existing hydrogel composition (about 20 g / cm 2 ). Therefore, it can be easily attached to the skin, and the effect of delivering the active ingredient to the skin is very excellent.

[0114] The adhesion of the sheet-type mask gel composition or a mask sheet containing it can be measured using a texture analyzer.

[0115] Specifically, after cutting the sample into a size of 3×3 cm, the mask sheet is fixed on the sample stage using double-sided tape. After using a 1 cm diameter probe to lower until a 10 g applied force is applied to the sample, wait for a 10-second contact time, and then lift the probe at a speed of 2 mm / sec. Record the maximum force measured at this time, thereby the adhesion of the sheet-type mask gel composition or a mask sheet containing it itself can be measured.

[0116] Then, after evenly applying 0.03 g of cream (Innisfree Jeju Orchid Enriched Cream) on the surface of the sample, measure the maximum force under the same conditions, thereby the adhesion of the sheet-type mask gel composition or a mask sheet containing it when using the layered beauty method can be measured.

[0117] On the one hand, as needed, the sheet-type mask gel composition according to an embodiment may further include a wrinkle-improving substance such as oleanolic acid, a whitening substance, a skin allergy-improving substance, or a combination thereof.

[0118] As a functional substance effective for wrinkle improvement, when the oleanolic acid is further included in the gel composition according to an embodiment, compared with the case of using other wrinkle-improving functional cosmetics containing oleanolic acid, the wrinkle improvement effect can be shown in a short time.

[0119] For example, when the sheet-type mask gel composition according to an embodiment includes a functional substance having a wrinkle-improving effect such as the oleanolic acid, the wrinkle improvement function can be very excellent.

[0120] As examples of substances that can be used as the wrinkle-improving substance, in addition to the oleanolic acid, retinol, retinol palmitate, polyethoxylated retinamide, adenosine, enzyme-treated red ginseng saponins, etc. can be cited. The preferred content range of the wrinkle-improving substance relative to the total amount of the composition is 0.001% by weight to 5.0% by weight. The types and contents of the wrinkle-improving substance are not limited to the examples.

[0121] As the whitening substance, paper mulberry extract, arbutin, oil-soluble licorice extract, niacinamide, α-bisabolol, vitamin C ethyl ether, ascorbyl glucoside, ascorbyl tetraisopalmitate, meirasolfu, tranexamic acid, etc. can be cited. The preferred content range of the whitening substance relative to the total amount of the composition is 0.001% by weight to 5.0% by weight. The types and contents of the whitening substance are not limited to the examples.

[0122] For example, niacinamide can be used as the whitening substance. The niacinamide can be contained in an amount of 0.01% by weight to 4.0% by weight, for example 0.05% by weight to 3.0% by weight, relative to the total amount of the composition, but is not limited thereto.

[0123] As the allergy-improving substance, asiaticoside, centella asiatica, β-sitosterol, allantoin, panthenol, tranexamic acid, urea, AHAs, BHAs, potassium glycyrrhizate, tea tree oil, sulfur, volcanic rock mud powder, etc. can be cited. The preferred content range of the allergy-improving substance relative to the total amount of the composition is 0.001% by weight to 20% by weight. The types and contents of the allergy-improving substance are not limited to the examples.

[0124] In addition, according to the purpose, the sheet-type mask gel composition may further include an absorption enhancer, etc.

[0125] For example, the sheet-type mask gel composition may further include inorganic substances. For example, the inorganic substances may include titanium dioxide, sulfur, zinc oxide, calamine, clay, etc. For example, when the inorganic substance contains titanium dioxide, a light-shielding effect, more specifically, a blue light-blocking effect, can be particularly achieved. At this time, the titanium dioxide may be water-dispersed titanium dioxide, but is not necessarily limited thereto.

[0126] Inorganic substances such as titanium dioxide may be contained in an amount of 0.01% by weight or more, for example, 0.01% to 1% by weight, for example, 0.1% to 1% by weight, for example, 0.5% to 1% by weight, for example, 0.6% by weight or more, for example, 0.6% to 1% by weight, for example, 0.7% by weight or more, for example, 0.7% to 1% by weight, based on the total amount of the gel composition. When the inorganic substances such as titanium dioxide are contained in the above content range, a mask sheet containing the gel composition according to an embodiment can effectively block blue light, thereby serving as a blue light-blocking patch. In particular, when the mask sheet is used as a local mask sheet, such as an eye mask, while effectively blocking blue light emitted from the display of an electronic device, it can seek to improve dark circles through its whitening function. Additionally, when the inorganic substances such as titanium dioxide are contained in an amount exceeding 2% by weight based on the total amount of the gel composition, the gel physical properties may be damaged.

[0127] Specifically, the mask sheet having blue light-blocking performance can be prepared by impregnating the gel composition on a yellow thin sheet. Since yellow is the complementary color of blue, it can selectively absorb blue light and is effective in reducing the light incident on the eyes.

[0128] Alternatively, the mask sheet having blue light-blocking performance can also be prepared by laminating the gel composition on a polyurethane support.

[0129] In addition, the sheet-type mask gel composition according to an embodiment may further include a skin conditioner. As a component that supplies nutritional ingredients to the skin, examples of the skin conditioner include panthenol, vitamins, niacinamide, adenosine, retinol, mequinol, and extracts such as aloe, green tea, ginseng, pine needles, mulberry leaves, lavender, etc., and their usage amounts are not particularly limited.

[0130] In addition, according to an embodiment, the sheet-type mask gel composition may further include any one or more of additives such as preservatives and fragrances (additives that can be additionally contained in a general cosmetic composition), and specific descriptions thereof are omitted.

[0131] Another embodiment includes a mask sheet containing the sheet-type mask gel composition.

[0132] The mask sheet can be obtained by the mask sheet preparation method described below.

[0133] The shape or thickness of the mask sheet can conform to the standards of commonly used mask sheets in the art and is not particularly limited. Additionally, additional substances such as capsules impregnated with cream can also be located on the skin contact surface of the mask sheet, and any components or matrices that can promote skin health can be included within the range where the effects of the sheet-type mask gel composition appear.

[0134] The mask sheet may have a support attached to either side of the mask sheet. The support can be used to reduce damage such as folding or tearing of the mask sheet and protect the skin contact surface of the mask sheet. The support can be a regenerated fiber such as cotton, rayon, etc.; stretchable polyurethane; an ester material containing acetate, wool, polyethylene terephthalate, etc.; a non-woven fabric or woven fabric made of fibers of polyethylene (PE), nylon, polypropylene (PP), or a combination thereof; oriented polypropylene (OPP); casting polypropylene (CPP); high density polyethylene (HDPE); low density polyethylene (LDPE); linear low density polyethylene (LLDPE); or the material laminated in the form of a film on a non-woven fabric support, etc., but is not necessarily limited thereto. Additionally, in order to impart an aesthetic sense and ensure the transparency of the product, the support can also be transparent.

[0135] The mask sheet may have a release film attached to the other side of the mask sheet with the support attached. Any release film or its laminate commonly used in transdermal dosage forms such as masks can be used. For example, films such as polypropylene, polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, etc., or papers laminated with the materials mentioned above can be used, but are not necessarily limited thereto.

[0136] According to yet another implementation example, a method for preparing the above-mentioned mask sheet is provided.

[0137] The method for preparing the mask sheet may include: (a) emulsifying at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof, a surfactant, and a polyol to prepare an emulsified composition; (b) stirring the emulsified composition together with a polyol and a thickening agent, and then uniformly applying the stirred material onto a release film; (c) heating and cooling the stirred material uniformly applied onto the release film to carry out gelation; and (d) attaching a support to the side where the stirred material has been gelated to prepare a mask sheet.

[0138] According to the method for preparing the mask sheet, at least one selected from the group consisting of lipids, oils, waxes, and combinations thereof is emulsified with a surfactant and a polyol. After preparing the emulsified composition, it is stirred together with a polyol and a thickener for gelation. Therefore, even when the lipids, oils, and / or waxes are impregnated in a high content, during the circulation process, the lipids, oils, and / or waxes are not easily exuded from the mask sheet, and the active ingredients can be effectively delivered to the skin. Moreover, the lipids, oils, and / or waxes are contained in the form of an emulsified composition. Therefore, even during the use of the mask sheet, if the lipids, oils, and / or waxes exude, the resulting reduction in the adhesiveness of the mask sheet is minimized, and thus there is no inconvenience during use.

[0139] After the mask sheet prepared by the above preparation method is attached to the skin, even after a long time, such as more than 30 minutes, such as more than 1 hour, such as more than 2 hours, such as more than 3 hours, such as more than 4 hours, such as more than 5 hours, such as more than 6 hours, such as more than 7 hours, such as more than 8 hours, such as more than 9 hours, such as more than 10 hours, such as more than 11 hours, such as more than 12 hours, such as 12 hours to 24 hours, it can maintain the adhesiveness. Moreover, after being removed, the moisturizing power in the skin can also be efficiently maintained for more than 6 hours, so it is difficult to feel a sense of dryness.

[0140] In order to adjust the physical properties, the method for preparing the mask sheet may further include a step of aging the gel attached to the support.

[0141] In the step (c), the heating can be carried out at a temperature of 70°C to 120°C for 2 minutes to 30 minutes.

[0142] In addition, in the step (b), the step of stirring the emulsified composition together with a polyol and a thickener may be a step of stirring an additive such as a substance for improving wrinkles, a substance for whitening, a substance for improving skin allergies, or a combination thereof together with the emulsified composition, the polyol, and the thickener as needed.

[0143] Hereinafter, the implementation examples of the above-mentioned present invention will be described in more detail by way of examples. However, the following examples are only for illustrative purposes and are not used to limit the scope of the present invention.

[0144] Preparation Example

[0145] Prepare the compositions according to Preparation Examples 1 to 6, Comparative Preparation Examples 1 to 3, and Reference Example 1 according to the components in Table 2 below. Specifically, after preparing the microemulsion composition according to the components in Table 1 below, add the microemulsion composition and a thickener (xanthan gum; Keltrol-F) to glycerol, and then stir at 7000 rpm for 3 minutes using a high-speed stirrer (T.K. Homomixer Mark II, PRIMIX) for gelation (Preparation Examples 1 to 3, Comparative Preparation Example 1, and Reference Example 1). In Preparation Examples 4 to 6, titanium dioxide and niacinamide were added together when adding the thickener.

[0146] In Comparative Preparation Example 2, instead of first preparing the microemulsion composition, the components used in Preparation Example A were mixed together with glycerol and a thickener, and then stirred at 7000 rpm for 3 minutes using a high-speed stirrer (T.K. Homomixer Mark II, PRIMIX) for gelation.

[0147] In Comparative Preparation Example 3, purified water, glycerol, a thickener, and High Gel 20D were mixed together at once, and then stirred at 7000 rpm for 3 minutes using a high-speed stirrer (T.K. Homomixer Mark II, PRIMIX) for gelation.

[0148]

Table 1

[0149] (Unit: wt%)

[0150]

[0151]

Table 2

[0152] (Unit: wt%)

[0153]

[0154] (In Table 2, High Gel 20D is a commercially available raw material obtained by mixing gelling polymers such as carrageenan and locust bean gum. Specifically, it includes 50 wt% of carrageenan, 20 wt% of locust bean gum, 10 wt% of agar, 10 wt% of guar gum, 5 wt% of glucose, and 5 wt% of potassium chloride.)

[0155] Example

[0156] (Example 1)

[0157] Prepare a viscous composition (liquid) according to Preparation Example 1, uniformly coat it on a release film, heat and cool the content coated on the release film, and then use a support on the other side without the release film attached. A facial mask sheet is obtained by this method.

[0158] (Example 2)

[0159] A mask sheet was prepared in the same manner as in Example 1, except that the viscous composition (liquid) according to Reference Example 1 was used instead of Preparation Example 1.

[0160] (Example 3)

[0161] The viscous composition (liquid) according to Preparation Example 4 was prepared, uniformly coated on a release film, and after heating and cooling the content coated on the release film, a support was used on the other side where the release film was not attached, and a mask sheet was prepared by this method.

[0162] (Example 4)

[0163] The viscous composition (liquid) according to Preparation Example 5 was prepared, uniformly coated on a release film, and after heating and cooling the content coated on the release film, a support was used on the other side where the release film was not attached, and a mask sheet was prepared by this method.

[0164] (Example 5)

[0165] The viscous composition (liquid) according to Preparation Example 6 was prepared, uniformly coated on a release film, and after heating and cooling the content coated on the release film, a support was used on the other side where the release film was not attached, and a mask sheet was prepared by this method.

[0166] (Comparative Example 1)

[0167] A mask sheet itself could not be prepared from the surfactant material, although it was the same as in Example 1 except that the viscous composition (liquid) according to Comparative Preparation Example 1 was used instead of Preparation Example 1.

[0168] (Comparative Example 2)

[0169] A mask sheet was prepared in the same manner as in Example 1, except that the viscous composition (liquid) according to Comparative Preparation Example 2 was used instead of Preparation Example 1.

[0170] (Comparative Example 3)

[0171] A mask sheet was prepared in the same manner as in Example 1, except that the viscous composition (liquid) according to Comparative Preparation Example 3 was used instead of Preparation Example 1.

[0172] Evaluation 1: Particle Size of the Fine Emulsion Composition

[0173] Using a Zetasizer (Zetasizer Nano ZS; nanoparticle size and zeta potential analyzer, Malvern Panalytical, UK), the average particle sizes according to Preparation Examples A to C were confirmed, and the results are shown inFigure 1 in

[0174] It can be confirmed that the emulsified composition constituting the gel composition according to one implementation example is composed of particles having an average particle size of 300 nm to 400 nm. Figure 1

[0175] Evaluation 2: Lamellar Structure

[0176] Using a polarized light microscope (DSX100, Olympus, Japan), it was confirmed whether a lamellar structure was observed in the emulsified compositions according to Preparation Examples A to E, and the results are shown in Table 3 below and Figures 2 to 4 in

[0177]

Table 3

[0178] Preparation Example A Preparation Example B Preparation Example C Preparation Example D Preparation Example E Lamellar Structure ○ ○ ○ × ×

[0179] ○: Lamellar structure observed

[0180] ×: No lamellar structure observed

[0181] From Table 3 above and Figures 2 to 4 it can be confirmed that a lamellar structure was observed in the emulsified composition constituting the gel composition according to one implementation example. Observation Figures 2 to 4 , it can be confirmed that circular lamellar structures of various sizes were observed in all regions. From Figure 3 it can be confirmed that plate-like thickeners were observed. From Figure 4 it can also be confirmed that crosslinked thickeners were observed.

[0182] Evaluation 3: Adhesion

[0183] After cutting the gel composition samples according to Preparation Example 1, Reference Example 1, and Comparative Preparation Example 2 into a size of 3 × 3 cm, the thin slices were fixed on the sample stage with double-sided tape. Then, a probe with a diameter of 1 cm was lowered until a force of 10 g (Applied force) was applied to the sample, and after waiting for a contact time of 10 seconds (Contact time), the probe was lifted at a speed of 2 mm / sec. The maximum force measured at this time was recorded to measure the adhesive force of the composition itself. After evenly applying 0.03 g of cream (innisfree Jeju Orchid Cream) on the sample, the adhesive force of the composition when using the layered beauty method was measured by the same method. After each of the above experiments was performed 3 times, the average value was taken, and the results are shown in Table 4 below.

[0184]

Table 4

[0185] (Unit: g / cm 2 ) ​

[0186]

[0187] S1: Use the gel composition alone

[0188] S2: Use the gel composition after using the cream

[0189] It can be confirmed from Table 4 above that the gel composition according to Preparation Example 1 is excellent both when used alone and when used after using the cream, compared with those of Reference Example 1 and Comparative Preparation Example 2. In particular, it can be confirmed that the cases of Preparation Example 1 and Reference Example 1 are also very suitable for the layered beauty method compared with that of Comparative Preparation Example 2.

[0190] Evaluation 4: Skin Moisture Increase Rate

[0191] After preparing the mask sheet according to Example 1, it was attached to the skin and removed after 24 hours, and then the skin moisture increase rate was further measured using a skin property analyzer (Miravex, Ireland) for 6 hours. The results are shown in Figure 5 as follows.

[0192] It can be confirmed from Figure 5 that the mask sheet according to one embodiment shows a moisture increase rate of 113% when attached for 6 hours, 133% when attached for 24 hours, and maintains the moisturizing power during the daytime (6 hours) after removal.

[0193] Evaluation 5: Drying Weight Loss Test

[0194] The mask sheets prepared in Example 1 and Comparative Example 3 were processed to a thickness of 1 mm, cut into a size of 5 cm × 5 cm, and then stored in a drying oven at 45°C for 60 minutes. The weights of the processed gels were measured just before putting them into the drying oven, and the weights reduced just after storing for 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, and 60 minutes, respectively. The results are shown in Table 5 below and Figure 6 as follows. In addition, the values calculated based on the following Mathematical Formula 1 are shown in Table 5 below.

[0195]

Table 5

[0196] (Unit: g)

[0197]

[0198] From Table 5 above and Figure 6It can be confirmed that even after 60 minutes, there is almost no change in weight for the gel composition according to an implementation example and the mask sheet containing the same. However, the hydrogel mask sheet of Comparative Example 3 loses approximately 74% of its initial weight after 60 minutes. From this, it can be confirmed that the mask sheet containing the gel composition according to an implementation example still maintains its initial adhesiveness.

[0199] Evaluation 6: Wrinkles Improvement Test

[0200] For 100% by weight of the composition of Preparation Example 1, 0.05% by weight of oleanolic acid, which is a wrinkle-functional ingredient, was added to prepare a viscous composition (liquid). The composition was uniformly coated on a release film. After heating and cooling the content coated on the release film, a support was used on the other side without the release film attached, and a mask sheet was prepared by this method.

[0201] The mask sheet was cut into a neck band shape and divided into two groups (Test Group 1 and Test Group 2) for use in the evaluation of the clinical efficacy of wrinkle improvement. The method for evaluating the clinical efficacy of wrinkle improvement is as described below, and the results are shown in Table 6 below and Figures 13 to 16 in.

[0202]

Evaluation Group

[0203] Test Group 1: Neck band

[0204] Test Group 2: Adenosine 0.04% essence + neck band

[0205]

Evaluation Method

[0206] 1) Test subjects: 10 men and women in their 20s to 40s

[0207] 2) Test time: Before use / After 2 weeks of use

[0208] 3) Test site: Neck

[0209] 4) Products used: Neck band, Neck band + essence

[0210] 5) Test items: Wrinkles

[0211] 6) Test method: After wiping the neck with a makeup remover tissue, measurements were taken after waiting for 15 minutes under constant temperature and humidity conditions.

[0212] 7) Method of using the test sample: Five subjects in the group using only the neck band (Test Group 1) and five subjects in the group using both adenosine 0.04% essence and the neck band (Test Group 2) each applied them to the neck before going to bed and removed them the next morning (the same procedure was carried out every day for 2 weeks).

[0213] 8) Measuring equipment: Primos lite (measuring neck skin roughness R a to measure neck wrinkles)

[0214] As shown in Table 6 below, it can be confirmed that in Test Group 2 where 0.04% adenosine essence and a neck band were used together, the neck wrinkles were significantly reduced during the two-week period compared to Test Group 1 where only the neck band was used. Thus, it can be understood that the facial mask sheet according to one embodiment is very suitable for the layered beauty method.

[0215]

Table 6

[0216] Test Group 1 Test Group 2 Before Use (Ra; μm) 41.32 33.60 After 2 Weeks of Use (Ra; μm) 38.26 27.04 Neck Wrinkle Reduction Rate (%) 7.40 19.52

[0217] Evaluation 7: Blue Light Blocking Test

[0218] The facial mask sheets prepared in Examples 3 to 5 were processed to a thickness of 1 mm, cut into a size of 5 cm × 5 cm, and then the transmittance was measured to confirm the blue light blocking performance. The results are shown in Figure 7 .

[0219] It can be confirmed from Figure 7 that the facial mask sheets according to Examples 3 to 5 have excellent blue light blocking performance.

[0220] Evaluation 8: Dark Circle Improvement and Moisture Increase Rate Test

[0221] The facial mask sheet prepared in Example 3 was processed to a thickness of 1 mm into the Figure 8 shape (processed into an eye mask), and then the fundus brightness and moisture content of 10 testers in their 20s to 30s were measured. Then, after adhering the eye mask to the fundus and going to bed, the eye mask was removed at 10 am the next day, and the fundus brightness and moisture content were immediately measured. The results are shown in Figures 9 to 12 .

[0222] It can be confirmed from Figures 9 to 12 that the eye mask according to Example 3 has the effect of improving dark circles. Furthermore, the moisture content also increases, so it also has a moisturizing effect.

[0223] The preferred embodiments of the present invention have been described in detail above. However, the scope of the rights of the present invention is not limited thereto. Various deformations and improvements made by those skilled in the art using the basic concepts of the present invention defined in the claims also fall within the scope of the rights of the present invention.

Claims

1. A facial mask sheet, the facial mask sheet comprising a sheet-shaped facial mask gel composition impregnated on a yellow thin sheet, satisfying the following Mathematical Formula 1: 100 - (B / A × 100) < 10 A is the weight of the gel obtained by gelling the gel composition just after being arbitrarily processed into a size of 5 cm × 5 cm × 1 mm, B is the weight of the gel just after being arbitrarily processed and then dried at 45°C for 60 minutes, The sheet-shaped facial mask gel composition comprises 5 wt% to 50 wt% of an emulsified composition having a lamellar structure, 49 wt% to 90 wt% of a polyol, 1 wt% to 10 wt% of a thickener, and 0.7 wt% to 1 wt% of water-dispersed titanium dioxide, and the total amount of the emulsified composition, the polyol, the thickener, and the water-dispersed titanium dioxide does not exceed 100% relative to the total amount of the sheet-shaped facial mask gel composition; The sheet-type mask gel composition has a higher adhesiveness when the water-soluble or fat-soluble composition is applied to the skin of mammals and then the sheet-type mask gel composition is applied, compared with the case where the sheet-type mask gel composition is directly and separately applied to the skin of mammals. The sheet-type mask gel composition has an adhesiveness of 30 g / cm 2 or more; The emulsified composition comprises: at least one selected from the group consisting of lipids, oils having low compatibility with the polyol, waxes, and combinations thereof; a surfactant; and a polyol, The emulsified composition further comprises a fatty alcohol having 16 or 18 to 22 carbon atoms; The emulsified composition further comprises lecithin, cetearyl alcohol, behenyl alcohol, or a combination thereof; The oils having low compatibility with the polyol include at least one selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils; The emulsified composition is diluted with water, and the water-diluted emulsified composition is composed of particles having an average particle size of 300 nm to 400 nm; The emulsified composition contains a higher content than the thickener.

2. The facial mask sheet according to claim 1, wherein, The facial mask sheet has a blue light blocking property.

3. The facial mask sheet according to claim 1, wherein, The facial mask sheet has a dark circle improving property.

4. The facial mask sheet according to claim 1, wherein, Relative to the total amount of the emulsified composition, the polyol in the emulsified composition contains 50 wt% to 80 wt%, at least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof contains 1 wt% to 40 wt%, The surfactant contains 0.1 wt% to 20 wt%.

5. The facial mask sheet according to claim 4, wherein, At least one selected from the group consisting of the lipids, oils, waxes, and combinations thereof contains a higher content than the surfactant.

6. The facial mask sheet according to claim 1, wherein, The polyol includes glycerol, 1,3-butanediol, propylene glycol, polyethylene glycol, dipropylene glycol, propane diol, or a combination thereof, The thickener includes xanthan gum, hyaluronic acid, carboxymethyl cellulose, polyacrylate, carboxymethyl starch, carboxymethyl chitosan, carboxymethyl dextran, or a combination thereof.

7. A method for preparing a facial mask sheet, comprising: Emulsifying at least one selected from the group consisting of lipids, oils having low compatibility with the polyol, waxes, and combinations thereof, a surfactant, and the polyol to prepare an emulsified composition having a lamellar structure; ​ The mask sheet includes a sheet-type mask gel composition. For the total amount of the sheet-type mask gel composition, after stirring 5 wt% to 50 wt% of the emulsifying composition, 49 wt% to 90 wt% of polyol, 1 wt% to 10 wt% of thickener, and 0.7 wt% to 1 wt% of water-dispersed titanium dioxide together, the step of uniformly coating the stirred mixture on a release film, wherein the total amount of the emulsifying composition, the polyol, the thickener, and the water-dispersed titanium dioxide does not exceed 100% relative to the total amount of the sheet-type mask gel composition; After uniformly coating the stirred mixture on the release film, heating and cooling are carried out for the gelation step; The step of attaching a support to the gelled side of the stirred mixture to prepare a mask sheet, and The step of impregnating the mask sheet in a yellow thin sheet; Wherein, the mask sheet satisfies the following Mathematical Formula 1: 【Mathematical Formula 1】 100 - (B / A × 100) < 10 A is the weight of the gel obtained by gelating the gel composition just after arbitrarily processing it into a size of 5 cm × 5 cm × 1 mm; B is the weight of the gel just after the above-mentioned arbitrary processing after drying at 45°C for 60 minutes; The mask sheet has a higher adhesive force when applied to the skin of a mammal after applying a water-soluble or fat-soluble composition to the skin of the mammal and then applying the mask sheet, compared to the case of directly applying the mask sheet alone to the skin of the mammal. The mask sheet has an adhesive force of 30 g / cm 2 or more; The emulsifying composition further includes a fatty alcohol having 16 or 18 to 22 carbon atoms; The emulsifying composition further includes lecithin, cetearyl alcohol, behenyl alcohol, or a combination thereof; Oils with low compatibility with the polyol include at least one selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils; The emulsifying composition is diluted with water, and the water-diluted emulsifying composition is composed of particles having an average particle size of 300 nm to 400 nm; The emulsifying composition contains a higher content than the thickener.

8. The method for preparing a mask sheet according to claim 7, Wherein, The method for preparing the mask sheet further includes a step of aging the gel attached to the support, The heating is carried out at a temperature of 70°C to 120°C for 2 minutes to 30 minutes, The step of stirring the emulsifying composition together with polyol, thickener, and water-dispersed titanium dioxide is, The step of stirring polyol, thickener, water-dispersed titanium dioxide, and a wrinkle-improving substance, a whitening substance, a skin allergy-improving substance, or a combination thereof together with the emulsifying composition.

9. The method for preparing a mask sheet according to claim 7, Wherein, The mask sheet has anti-blue light performance.

10. The method for preparing a mask sheet according to claim 7, Wherein, The mask sheet has dark circle-improving performance.

Images