Microcurrent stimulation mask pack

Abstract

The present invention relates to a microcurrent stimulation mask pack for continuously providing microcurrent stimulation to the skin without any power supply to enhance the penetration of functional cosmetics and help cell activation, thereby achieving the effects of improving skin texture, elasticity, and wrinkles.

Description

Microelectric stimulation mask pack

[0001] The present invention relates to a microelectric stimulation mask pack, and more specifically, to a microelectric stimulation mask pack that applies microelectric stimulation to the skin in a sustainable manner in the absence of an external power source.

[0002] Mask packs are widely used because they can conveniently and instantly deliver nutrients and moisture to the skin, such as the face, or remove impurities. Various types of mask packs are available on the market, varying depending on the material and form of the mask sheet, the type of cosmetic composition (such as serum) impregnated into the sheet, and the impregnation method. Recently, a wide variety of products have also emerged that apply microcurrents to the mask sheet to further enhance effects such as improving skin elasticity.

[0003] Microcurrent refers to a very weak current that takes the form most similar to the bioelectricity flowing in the human body. It has been proven that applying microelectric stimulation of a similar intensity to this bioelectricity (e.g., a current of about 1,000 μA or less) has effects such as wrinkle improvement, promotion of wound and fracture healing, improvement of muscle fatigue, reduction of inflammation, improvement of blood circulation, and reduction of abdominal fat.

[0004] Accordingly, the cosmetics industry is seeking to develop devices or mechanisms capable of separately supplying these microcurrents to the skin to further enhance the skin condition improvement effects, and the fields and methods of application are becoming increasingly diverse.

[0005] However, existing microcurrent mask packs are pointed out to have limitations, such as reduced user convenience due to the large and heavy separate power supply device (battery), the inability to charge depending on the usage environment or conditions, and the problem of the metal foil electrode easily detaching in the structure where the low-frequency stimulation part is formed with a metal foil electrode on a non-woven fabric.

[0006] [Prior Art Literature]

[0007] [Patent Literature]

[0008] (Patent Document 1) Patent Document 1. Korean Published Patent Application No. 10-2024-0025161

[0009] The present invention has been devised in consideration of the above-mentioned problems, and the objective of the present invention is to provide a mask pack capable of continuously supplying bio-microelectric stimulation to the skin without the application of an external power source, thereby providing cosmetic or medical effects such as skin improvement.

[0010] To achieve the above objective, the present invention provides a microelectric stimulation mask pack comprising (A) a support layer having a conductive layer formed on one surface and (B) a hydrogel layer in contact with the support layer; wherein the conductive layer is formed on the surface of the support layer that is in contact with the hydrogel layer, or on the surface opposite to the surface in contact with the hydrogel layer; and wherein, when the conductive layer is formed on the surface opposite to the surface in contact with the hydrogel layer, the conductive layer and the hydrogel layer are electrically connected.

[0011] A microelectric stimulation mask pack according to various embodiments of the present invention can provide continuous and effective microelectric stimulation to the skin without a separate power supply. Compared to conventional mask packs used to deliver active cosmetic ingredients to the skin, the microelectric stimulation mask pack of the present invention has the advantage of having a relatively simple structure, being easily manufactured at a low cost without the need for additional devices including an external power supply, and being immediately usable without separate pretreatment.

[0012] Figure 1 shows a microelectric stimulation mask pack according to the present invention.

[0013] FIG. 2 is an exploded perspective view showing a microelectric stimulation mask pack according to one embodiment of the present invention.

[0014] FIGS. 3a to 3c are cross-sectional views showing a hydrogel layer according to another embodiment of the present invention.

[0015] In order to fully understand the present invention, the operational advantages of the present invention, and the objectives achieved by the implementation of the present invention, reference must be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described therein.

[0016] The present invention will be described in detail below by explaining preferred embodiments of the invention with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components.

[0017] One aspect of the present invention relates to a microelectric stimulation mask pack comprising (A) a support layer having a conductive layer formed on one surface and (B) a hydrogel layer in contact with the support layer; wherein the conductive layer is formed on the surface of the support layer that is in contact with the hydrogel layer, or on the surface opposite to the surface in contact with the hydrogel layer; and wherein, when the conductive layer is formed on the surface opposite to the surface in contact with the hydrogel layer, the conductive layer and the hydrogel layer are electrically connected.

[0018] Human physical activity induces mechanical interactions between various materials, such as shoe soles and the ground or skin and clothing, and these interactions can transfer electric charges from one surface to another through contact, separation, or friction. Surface charge density induces a specific electric potential in the contact layer of a material; among physical activities, walking, in particular, can generate relatively high electric potentials due to short contact times and significant contact areas. If a portion of the contact layer in contact with the ground is separated from the ground, the contact layer exhibits a specific electric potential that is transmitted in all directions toward surrounding materials (human body, air, ground, etc.); conversely, if a portion of the contact layer remains attached to the ground, the potential of this contact layer is shielded by the induced charge of the ground. Consequently, low-frequency alternating potentials are generated in the contact layer according to the walking cycle; these alternating potentials polarize surrounding materials and dissipate in the form of an alternating electric field (AC field), which signifies energy loss resulting from human physical activity.

[0019] The present invention relates to a mask pack capable of implementing a Body-mediated Energy Loss Conversion (BELC) system that can convert energy loss caused by such alternating current potential into usable electricity through an energy transfer medium. When a user wearing the mask pack of the present invention engages in physical activity such as walking, dielectric polarization occurs in the user's body, which is transmitted to the hydrogel layer as an alternating current electric potential. At this time, a potential difference may occur between the hydrogel layer and the conductive layer; however, in the mask pack of the present invention, the hydrogel layer and the conductive layer are in contact with each other or are electrically connected, so the potential between the hydrogel layer and the conductive layer becomes substantially the same. This is because the conductive layer functions as a pool of free charges similar to ground, acting as a floating electrode or Free Charge Source (FCS) that is not grounded to the skin, thereby supplying free charges to the hydrogel layer acting as an Attached Electrode (AE).

[0020] Thus, the skin area to which the hydrogel layer is attached possesses a potential balanced with that of the conductive layer, while the adjacent skin area without the hydrogel layer possesses the potential transmitted to the original skin. Consequently, a potential difference arises between the skin area with the hydrogel layer and the adjacent skin area without it, leading to an electric field concentration. This potential difference and electric field concentration are generated in the form of alternating current due to the cycle of physical activity, such as walking (e.g., the gait cycle). This potential difference and electric field concentration induced in the skin in the form of alternating current stimulate the cells in the affected area and invigorate cellular activity, thereby producing cosmetic or medical effects such as increased ATP production.

[0021] In the present invention, the term "mask pack" encompasses all sheet-type products that can be attached to human skin to implement this BELC system and used for cosmetic purposes such as massage or medical purposes such as dressing, and the part of the human body to which it can be attached is not limited to the face. Therefore, in the present invention, any product in the form of a sheet that can be attached to human skin and used for cosmetic purposes such as massage or medical purposes such as dressing is included in the category of the mask pack of the present invention, and should be interpreted to include, without limitation, patches, pads, sheets, masks, stickers, etc.

[0022] According to one embodiment, the electrical connection between the conductive layer and the hydrogel layer is made by (i) a wire physically connecting the conductive layer and the hydrogel layer, (ii) a conductive composition impregnated in the support layer, or (iii) or both.

[0023] In the present invention, 'wire' may be any conductive material capable of electrical connection.

[0024] In the present invention, the term "conductive composition" refers to a composition comprising a conductive material. Examples of conductive materials include, but are not limited to, conductive ions, or conductive solid materials such as graphene or metals.

[0025] In the microelectric stimulation mask pack of the present invention, the conductive layer may be formed on the side of the support layer that contacts the hydrogel layer, or on the opposite side of the side that contacts the hydrogel layer. When formed on the contacting side, they may be electrically connected through direct contact, and when formed on the opposite side, the conductive layer and the hydrogel layer may be electrically connected by a wire or a conductive composition impregnated in the support layer to have the same potential.

[0026] Among these two arrangements, a configuration in which the hydrogel layer and the conductive layer are positioned on different sides with a support layer in between is preferable, because the hydrogel layer and the conductive layer perform the functions of an attached electrode and a floating electrode, respectively, more effectively, thereby increasing the potential difference generation and electric field concentration effects.

[0027] According to another embodiment, the conductive composition comprises a material selected from among a cosmetic, a functional active material for cosmetic use, a functional active material for medical use, a functional active material for health supplement use, and a combination of two or more of these.

[0028] In cases where the electrical connection between the conductive layer and the hydrogel layer is made by a conductive composition impregnated in the support layer, the conductive composition impregnated in the support layer must include a conductive material so as to balance the potential between the hydrogel layer and the conductive layer placed with the support layer in between. Any material known as a conductive material that is soluble or disperseable in the composition may be used as the conductive material in the present invention.

[0029] In addition to these conductive materials, the conductive composition may further include cosmetics, functional active materials for cosmetic use, functional active materials for medical use, functional active materials for health supplement use, and mixtures of two or more of these.

[0030] Alternatively, if a cosmetic, a functional active substance for beauty purposes, a functional active substance for medical purposes, a functional active substance for health supplement purposes, and a mixture of two or more of these can function as a conductive substance, the conductive composition may not contain a separate conductive substance.

[0031] In particular, when the support layer is impregnated with a composition containing a cosmetic, the cosmetic may act as an electrically conductive medium. Any active ingredient capable of exhibiting cosmetic activity on the skin may be included in the cosmetic of the present invention, and is not particularly limited. For example, the skin active ingredient may include cosmetic ingredients having effects such as wrinkle improvement, skin whitening, UV protection, anti-aging, moisturization, and increased elasticity, as well as drugs for the prevention and treatment of skin diseases; any ingredient capable of providing effective effects on the skin is not particularly limited. Specifically, it may be selected from the group consisting of retinol, retinyl palmitate, retinyl acetate, retinoic acid, coenzyme Q10, elastin, collagen, hyaluronic acid, ceramide, caffeine, chitosan, ascorbic acid, ascorbyl glucoside, alpha-bisabolol, tocopherol, tocopherol acetate, arbutin, niacinamide, adenosine, retinol acetate, vitamin A, vitamin D, vitamin E, and combinations thereof, but is not limited thereto.

[0032] In addition, the above cosmetic composition may further include various raw materials as additives, such as moisturizers, skin conditioning agents, emollients, nutrients, surfactants, whitening agents, anti-wrinkle agents, antioxidants, preservatives, preservatives, fragrances, colorants, pH adjusters, and extracts. Furthermore, the above cosmetic composition may additionally include one or more cosmetically acceptable carriers that are incorporated into general skin cosmetic compositions, and may appropriately incorporate, but are not limited to, conventional ingredients such as oils, water, surfactants, moisturizers, lower alcohols, thickeners, chelating agents, colorants, preservatives, and fragrances.

[0033] The above cosmetic composition may be prepared in the form of a solution, topical ointment, nourishing lotion, softening lotion, essence, oil, etc., and cosmetically acceptable carriers included in the above cosmetic composition may be selected and used in various ways depending on the formulation. For example, when the formulation of the above cosmetic composition is an ointment, paste, cream, or gel, animal oil, vegetable oil, wax, paraffin, starch, tracanth, cellulose derivative, polyethylene glycol, silicone, bentonite, silica, talc, zinc oxide, or a mixture thereof may be used as carrier components.

[0034] According to another embodiment, the hydrogel layer includes, in addition to the openings corresponding to the eyes and mouth and the nose for insertion, (i) one or more inner incisions formed only on the inner side, or (ii) one or more inner and outer incisions formed inwardly from the outer edge.

[0035] When the microelectric stimulation mask pack of the present invention is used on the face, the conductive layer, the support layer, and the hydrogel layer need to have holes corresponding to the eyes and mouth and an incision line for inserting the nose formed therein.

[0036] In addition, as previously discussed, the alternating current potential difference and electric field concentration generated in the mask pack of the present invention occur between the skin area to which the hydrogel layer is attached and an adjacent skin area not attached; therefore, it is advantageous to maximize the effect by increasing the boundary of the hydrogel layer under the condition of the same surface area. In this regard, it is necessary for the hydrogel layer of the microelectric stimulation mask pack according to the present invention to include one or more inner incisions or inner and outer incisions.

[0037] According to another embodiment, the inner or inner / outer cut may be a straight or curved cut line or a cut surface of a region. In this case, the inner cut may be formed in only one direction, formed in one direction and branched into two or more directions, or formed in two or more directions and merged together. Similarly, the inner / outer cut may be formed in only one direction (Fig. 3a), formed at one point of the outer edge and branched into two or more directions (Figs. 3b and 3c), or formed at two or more points of the outer edge and merged together.

[0038] In the present invention, when the incision is an incision surface and the incision surface is an inner incision formed only on the inner side of the hydrogel layer, the incision surface becomes an opening that penetrates the hydrogel layer, whereas when the incision is an incision surface and the incision surface is an inner-outer incision formed inwardly from the outer edge of the hydrogel layer, the incision surface becomes an incision surface representing an empty area.

[0039] In the present invention, the ‘opening’ is an aperture or perforation formed in a hydrogel layer, and can be pierced in a circular, elliptical, square shape, etc., and is not limited to a specific shape. Examples of the openings of the present invention include, but are not limited to, holes, slots, gaps, perforations, etc.

[0040] According to a preferred embodiment, when the hydrogel layer includes one or more inner incisions, the inner incisions are slot-shaped with a width and length of 0.5-50 mm and 10-200 mm, respectively, preferably 1-7 mm and 10-100 mm, respectively, and more preferably 2-6 mm and 20-70 mm, respectively. At this time, the total length of the perimeter of the plurality of slot-shaped inner incisions may be 5-900 mm, preferably 50-600 mm, and more preferably 100-500 mm.

[0041] In the present invention, in the slot-shaped inner cut portion, 'width' and 'length' respectively refer to the 'length of the short side' and the 'length of the long side' of the slot.

[0042] In the microelectric stimulation mask pack of the present invention, when the incision formed in the hydrogel layer is an inner incision formed only on the inner side, particularly when both of the two conditions are satisfied—① all of the multiple inner incisions are slot-shaped with a width and length of 1-7 mm and 10-100 mm, respectively, and ② the total length of the circumference of the multiple slot-shaped inner incisions is 50-600 mm—the potential difference and electric field concentration at the boundary surface of the incision are maximized, thereby strengthening the skin barrier function and protecting skin moisture, resulting in a skin moisturizing effect; however, it was confirmed that in the case of an opening that deviates from such shape and range, a significant skin moisturizing effect does not occur.

[0043] In particular, in the microelectric stimulation mask pack of the present invention, when the incision formed in the hydrogel layer is an inner incision formed only on the inner side, ① when a plurality of inner incisions are all slot-shaped with a width and length of 2-6 mm and 20-70 mm respectively, and ② when the total length of the circumference of the plurality of slot-shaped inner incisions is 100-500 mm, the hydrogel layer combined with microelectric stimulation significantly increases the expression of growth factors that promote wound healing, thereby exhibiting a self-healing promotion effect qualitatively different from existing products, and also, due to improved skin breathability through the incisions and local dispersion of microcurrent stimulation, a heterogeneous effect occurs in which the frequency of skin irritation and skin troubles is reduced by more than 70% compared to existing products even when the mask pack is attached for a long time of 12 hours or more, but it was confirmed that such an effect does not significantly occur when the shape and range are different.

[0044] According to another preferred embodiment, when the hydrogel layer includes one or more inner and outer incisions, the inner and outer incisions are in the form of incision surfaces, and the area of ​​the inner and outer incision surfaces is 5% to 60%, preferably 10% to 30%, and more preferably 15% to 25% relative to the area of ​​the hydrogel layer excluding the inner and outer incision surfaces. At this time, the total length of the perimeter of the plurality of inner and outer incisions may be 10-1,000 mm, preferably 50-600 mm, and more preferably 100-500 mm.

[0045]

[0046] In the microelectric stimulation mask pack of the present invention, when the incision formed in the hydrogel layer is an inner or outer incision formed inward from the outer edge, in particular, when all three conditions are satisfied—① the inner or outer incision is in the shape of an incision surface, ② the area of ​​the inner or outer incision surface is 10% to 30% relative to the area of ​​the hydrogel layer excluding the inner or outer incision surface, and ③ the total length of the circumference of the plurality of inner or outer incisions is 50-600mm—the potential difference and electric field concentration at the boundary surface of the incision are maximized, thereby strengthening the skin barrier function and protecting skin moisture, resulting in a skin moisturizing effect; however, it was confirmed that in the case of an opening that deviates from the shape and range above, no significant skin moisturizing effect occurs.

[0047] In particular, in the microelectric stimulation mask pack of the present invention, when the incision formed in the hydrogel layer is an inner or outer incision formed inward from the outer edge, ① the inner or outer incision is in the shape of an incision surface, ② the area of ​​the inner or outer incision surface is 15% to 25% relative to the area of ​​the hydrogel layer excluding the inner or outer incision surface, and ③ the total length of the perimeter of the plurality of inner or outer incisions is 100-500mm, not only is skin microvascular circulation promoted along the incision boundary and local inflammatory reactions significantly alleviated, but also, separate from the mere moisture protection effect, the skin penetration rate of cosmetic ingredients (e.g., hyaluronic acid, vitamin C) in the hydrogel combined with microelectric stimulation increases by more than three times compared to the conventional rate due to increased cell membrane permeability caused by electric field concentration, and additionally, heterogeneous effects occur in which the potential difference and electric field concentration are maximized at the boundary of the incision, thereby strengthening the skin barrier function and significantly suppressing skin moisture loss; however, if the shape and range deviate from these, such effects do not occur. It was confirmed that it did not occur significantly.

[0048] In another embodiment, one or more layers selected from the support layer and the conductive layer include an inner or inner / outer cut, and for manufacturing convenience, the inner or inner / outer cut included in one or more layers selected from the support layer and the conductive layer may be arranged inline at the same location as the inner or inner / outer cut formed in the hydrogel layer.

[0049] In various embodiments of the present invention, the support layer may be selected from fiber sheets, cellulose nonwoven fabrics, Tencel, cotton fabrics, Cupro, microfibers, rayon, silk, and combinations of two or more of these.

[0050] Among these, it is preferable that it be a fiber sheet, and it may include one or more selected from the group consisting of cotton, viscose rayon, nylon, polyethylene fiber, polypropylene fiber, polyester fiber, polyamide fiber, and polyurethane fiber.

[0051] In various embodiments of the present invention, the hydrogel layer may be selected from alginate, chitosan, starch, dextrin, gelatin, pectin, hyaluronic acid, soy protein, whey protein, carboxymethylcellulose, hydroxyethylcellulose, xanthan gum, guar gum, carrageenan, polyvinylpyrrolidone, carbopol, and combinations of two or more of these.

[0052] In various embodiments of the present invention, the conductive layer may be a conductive pattern layer formed in a patterned shape on the support layer.

[0053] That is, the conductive layer can be formed on the support layer in a patterned form to rapidly and continuously supply free electrons to the hydrogel layer as a free electron source. The conductive layer comprises a conductive material, and examples of the conductive material may include, but are not limited to, conductive graphene, Ag, Pt, Cu, and combinations of two or more of these.

[0054] In the present invention, it is sufficient for the conductive layer to be able to rapidly and continuously supply free electrons to the hydrogel layer, and it is not necessary for the conductive layers to be electrically connected to each other. That is, for example, in the case of a conductive layer formed in a patterned form on a support layer as described above, electrical connection between the conductive materials in the planar direction (within the same layer) is not essential, and it is sufficient for there to be only an electrical connection in the vertical direction (between the patterned conductive material and the hydrogel).

[0055] In addition, although the conductive pattern layer in FIG. 2 is shown as being separable from the support layer (110), the conductive layer, particularly the conductive pattern layer, may be formed directly on one side of the support layer through methods such as printing as needed.

[0056] The conductive pattern layer is not particularly limited as it may include various forms, such as being arranged to form a certain pattern or arranged alternately. Additionally, the conductive pattern layer may be formed by applying printing techniques such as screen printing, roll printing, or gravure printing.

[0057] The microelectric stimulation mask pack according to the present invention can be used to promote and maintain overall skin health. Furthermore, since the microelectric stimulation mask pack according to the present invention can be reused without the need to repeatedly purchase new mask packs simply by refilling the cosmetic material in the support layer, it can promote eco-friendly and sustainable consumption. In addition, since the cosmetic material can be easily refilled, personalized skin care is possible by allowing users to select and reuse various cosmetic materials suited to their skin condition without hassle.

[0058] The microelectric stimulation mask pack of the present invention activates the user's facial skin cells through stimulation by microcurrent, and allows functional cosmetic substances contained in the cosmetic composition impregnated in the support layer (110) of the mask pack of the present invention to be efficiently absorbed into the skin, thereby providing elastic skin. Furthermore, compared to conventional mask packs used to deliver active cosmetic ingredients to the skin, it has a relatively simple structure and requires no additional devices, so it can be easily manufactured at a low cost and can be used immediately without separate pretreatment.

[0059] The present invention is to be explained in more detail below through examples, etc.; however, the scope and content of the present invention shall not be interpreted as being narrowed or limited by the examples, etc. below. Furthermore, based on the disclosure of the present invention including the examples below, it is evident that a person skilled in the art can easily practice the present invention even without specific experimental results presented, and it is natural that such variations and modifications fall within the scope of the appended claims.

[0060] Furthermore, the experimental results presented below describe only the representative experimental results of the above examples and comparative examples, and the respective effects of various embodiments of the present invention not explicitly presented below will be described in detail in the relevant sections.

[0061] Examples

[0062] Example 1. Mask pack having an inner incision

[0063] In this embodiment, the mask pack used a viscose rayon fiber sheet with a thickness of 500 μm as a support layer. A grid-like conductive pattern (line width 30 μm, pattern spacing 30 μm) was manufactured on one surface of the support layer through a screen printing method.

[0064] A hydrogel composition was applied to the other surface of the above-mentioned support layer and cured for a certain period of time to complete the mask pack. The hydrogel solution is not particularly limited as long as it has a viscosity of 1000 cps, which is generally used in mask packs; however, in the present invention, 170 g of glycerin, 6 g of carrageenan, and 20 g of locust bean gum were mixed, and a solution in which 0.8 g of methylparaben and 0.3 g of propylparaben were dissolved in 30 g of glycerin was added to create a mixture, and 740 g of deionized water was added to the mixture and the temperature was raised to 85°C to prepare a gel solution. While maintaining the temperature, 20 g of hyaluronic acid, 2 g of sorbitan stearate, and 12.9 g of green tea extract were added to the gel solution to prepare the solution, and this was used.

[0065] As described above, after sterilizing the mask pack, the incision lines corresponding to the face, eyes, and nose were shaped using a cutting machine. Next, slot-shaped inner incisions with a width of 5mm and a length of 50mm were shaped using a cutting machine so that two were arranged vertically on each side, centered on the nose area (total circumference length 440mm).

[0066] Example 2. Mask pack having inner and outer incisions

[0067] In this embodiment, the mask pack used a viscose rayon fiber sheet with a thickness of 500 μm as a support layer. A grid-like conductive pattern (line width 30 μm, pattern spacing 30 μm) was manufactured on one surface of the support layer through a screen printing method.

[0068] A hydrogel composition was applied to the other surface of the above-mentioned support layer and cured for a certain period of time to complete the mask pack. The hydrogel solution is not particularly limited as long as it has a viscosity of 1000 cps, which is generally used in mask packs; however, in the present invention, 170 g of glycerin, 6 g of carrageenan, and 20 g of locust bean gum were mixed, and a solution in which 0.8 g of methylparaben and 0.3 g of propylparaben were dissolved in 30 g of glycerin was added to create a mixture, and 740 g of deionized water was added to the mixture and the temperature was raised to 85°C to prepare a gel solution. While maintaining the temperature, 20 g of hyaluronic acid, 2 g of sorbitan stearate, and 12.9 g of green tea extract were added to the gel solution to prepare the solution, and this was used.

[0069] As described above, after sterilizing the mask pack, the incision lines corresponding to the face, eyes, and nose were shaped using a cutting machine. Next, as shown in FIG. 3c, the shape was shaped using a cutting machine to provide one inner and one outer incision on the left and right sides, respectively, in the direction inward from the outer edge. The area of ​​the inner and outer incisions was designed to be 15% of the area of ​​the hydrogel layer, and the total circumference was designed to be 200 mm.

[0070] Comparative Example 1. Mask pack

[0071] In the above Example 1, a mask pack was manufactured in the same way except that the width and length of the inner incision were 8mm and 105mm, respectively.

[0072] Comparative Example 2. Mask pack

[0073] A mask pack was manufactured by making all parts identical except that the width and length of the inner incision in Example 1 were 0.9 mm and 9 mm, respectively.

[0074] Comparative Example 3. Mask pack

[0075] In the above Example 2, a mask pack was manufactured in the same way except that the area of ​​the inner and outer incisions and the total perimeter length were 32% and 610mm, respectively.

[0076] Comparative Example 4. Mask pack

[0077] In the above Example 2, a mask pack was manufactured in the same way except that the area of ​​the inner and outer incisions and the total perimeter length were 8% and 48mm, respectively.

[0078] Test Example: TWEL Evaluation

[0079] Transepidermal Water Loss (TWEL) was measured before and after applying the mask packs of Examples 1 and 2 and Comparative Examples 1 to 4 for up to 48 hours to 20 adult men and women. When the TWEL measured after removing the mask pack after applying it for 30 minutes was set to 100 (TWEL-0), the TWEL was measured 30 minutes, 1 hour, 6 hours, and 12 hours after removal, respectively (TWEL-0.5, TWEL-1, TWEL-6, TWEL-12).

[0080] As a result, in the case of Examples 1 and 2, although there were slight variations as TWEL-0.5, TWEL-1, TWEL-6, and TWEL-12, all TWEL-0.5, TWEL-1, TWEL-6, and TWEL-12 remained within ±1% of TWEL-0, so it was observed that there was substantially no skin moisture loss.

[0081] On the other hand, in Comparative Examples 1 to 4, it was observed that TWEL-12 was reduced by 35%, 49%, 62%, and 87%, respectively, compared to TWEL-0, confirming that a significant amount of skin moisture was lost, unlike in the Examples.

[0082] As such, it is obvious to those skilled in the art that the present invention is not limited to the described embodiments and can be modified and varied in various ways without departing from the spirit and scope of the invention. Accordingly, such modified or varied embodiments should be deemed to fall within the scope of the claims of the present invention.

[0083] [Explanation of the symbol]

[0084] 100 Mask Packs

[0085] 110 supporters

[0086] 120 hydrogel layers

[0087] 130 conductive layer (can also be directly formed on 120 via printing, etc.)

[0088] 140, 142a, 142b Hydrogel layer incision

[0089] 141a, 141b Support layer incision

[0090] 143a, 143b conductive incision

Claims

1. A microelectric stimulation mask pack comprising (A) a support layer having a conductive layer formed on one surface and (B) a hydrogel layer in contact with the support layer, The conductive layer is formed on the surface of the two sides of the support layer that is in contact with the hydrogel layer, or on the surface opposite to the surface that is in contact with the hydrogel layer, and A microelectric stimulation mask pack characterized in that, when the conductive layer is formed on the opposite side of the surface in contact with the hydrogel layer, the conductive layer and the hydrogel layer are electrically connected.

2. In claim 1, the electrical connection between the conductive layer and the hydrogel layer is It is formed by a wire physically connecting the conductive layer and the hydrogel layer, or A microelectric stimulation mask pack characterized by being formed by a conductive composition impregnated in the above-mentioned support layer.

3. A microelectric stimulation mask pack according to claim 2, characterized in that the conductive composition comprises a substance selected from among a cosmetic, a functional active substance for beauty use, a functional active substance for medical use, a functional active substance for health supplement use, and a combination of two or more of these.

4. In claim 1, the hydrogel layer In addition to the holes corresponding to the eyes and mouth and the incision line for inserting the nose, It includes one or more medial incisions formed only on the medial side, or A microelectric stimulation mask pack characterized by including one or more inner and outer incisions formed inwardly from the outer edge.

5. In paragraph 4, the inner or inner / outer incision is a straight or curved incision line, or an incision surface of a region, and The above-mentioned inner incision is formed in only one direction, is formed in one direction and then branches into two or more directions, or is formed in two or more directions and then merges together. A microelectric stimulation mask pack characterized in that the inner and outer incisions are formed in only one direction, are formed at one point on the outer edge and branch out in two or more directions, or are formed at two or more points on the outer edge and merge with each other.

6. In paragraph 5, the hydrogel layer comprises one or more internal incisions, and A microelectric stimulation mask pack characterized by the inner incision being in the form of a slot with a width of 1-7 mm and a length of 10-100 mm.

7. A microelectrode stimulation mask pack according to claim 6, characterized in that the total length of the circumference of a plurality of slot-shaped inner incisions is 50-600 mm.

8. In paragraph 5, the hydrogel layer comprises one or more internal incisions, and A microelectrode stimulation mask pack characterized by the inner incisions having a width and length of 2-6 mm and 20-70 mm, respectively, and the total length of the circumference of a plurality of slot-shaped inner incisions being 50-600 mm.

9. In paragraph 5, the hydrogel layer comprises one or more inner and outer incisions, and The above inner and outer incisions are in the shape of an incision surface, A microelectrode mask pack characterized in that the area of ​​the inner and outer cut surfaces is 10% to 30% relative to the area of ​​the hydrogel layer excluding the inner and outer cut surfaces.

10. A microelectrode stimulation mask pack according to claim 9, characterized in that the total length of the circumference of the plurality of inner and outer incisions is 50-600 mm.

11. In paragraph 5, the hydrogel layer comprises one or more inner and outer incisions, and The above inner and outer incisions are in the shape of an incision surface, A microelectrode stimulation mask pack characterized in that the area of ​​the inner and outer cut surfaces is 15% to 25% relative to the area of ​​the hydrogel layer excluding the inner and outer cut surfaces, and the total length of the circumference of the plurality of inner and outer cut portions is 100-500mm.

12. In paragraph 5, one or more layers selected from the support layer and the conductive layer include an inner or inner / outer cut portion, and A microelectric stimulation mask pack characterized in that an inner or inner / outer incision, comprising one or more layers selected from the support layer and the conductive layer, is arranged inline at the same location as an inner or inner / outer incision formed in the hydrogel layer.

13. A microelectric stimulation mask pack according to any one of claims 1 to 12, wherein the support layer is selected from a fiber sheet, a cellulose nonwoven fabric, Tencel, a cotton cloth, Cupro, a microfiber, a rayon, a silk, and a combination of two or more of these.

14. A microelectric stimulation mask pack according to any one of claims 1 to 12, wherein the hydrogel layer is selected from alginate, chitosan, starch, dextrin, gelatin, pectin, hyaluronic acid, soy protein, whey protein, carboxymethylcellulose, hydroxyethylcellulose, xanthan gum, guar gum, carrageenan, polyvinylpyrrolidone, carbopol, and combinations of two or more of these.

15. A microelectric stimulation mask pack according to any one of claims 1 to 12, wherein the conductive layer is a conductive pattern layer formed in a patterned form on the support layer.

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