Beauty treatment method

Abstract

To provide a beauty treatment method capable of suppressing damage to the stratum corneum, achieving a blood flow-promoting effect simply by pressing a protrusion tool against the skin, and not requiring actions such as significantly deforming or rubbing the skin.SOLUTION: The invention provides a beauty treatment method using a protrusion tool 1 having fine projections 3 protruding from a sheet base 2. The protrusion tool 1 comprises a thermoplastic resin. The tip diameter WA of the fine projections 3 is from 10 μm to 400 μm inclusive. The protrusion tool 1 is tapped against the skin.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a beauty method.

Background Art

[0002] Conventionally, a protrusion tool having a plurality of fine protrusions has been known (see Patent Documents 1 and 2). Patent Document 1 describes a skin-stimulating protrusion tool in which a plurality of fine protrusions are formed on the surface of a substrate. The skin-stimulating protrusion tool of this document is used in combination, for example, 1 to 4 times a week for 1 to 6 months, by attaching it to a part of the face for several hours. This document states that by attaching the skin-stimulating protrusion tool to a part of the face, it is possible to improve blood circulation not only in the part where the skin-stimulating protrusion tool is attached but also in the entire face and brighten the color tone of the entire face.

[0003] Patent Document 2 describes a skin-stimulating protrusion tool having fine hollow protrusions with a hollow interior on a base. The skin-stimulating protrusion tool of this document stimulates by pressing the fine protrusions against the skin or flesh. Also, the skin-stimulating protrusion tool of this document is used by fixing it to a part of the body where skin stimulation is desired, via an adhesive, for the purpose of relieving physical fatigue such as numbness in the limbs, low back pain, muscle pain, and stiff shoulders.

[0004] Also, separately from the skin-stimulating protrusion tool, a massage tool having a large number of protrusions is known. The massage tool has protrusions larger than the fine protrusions provided in the skin-stimulating protrusion tool, and by pressing the protrusions against the skin and kneading the affected area, etc., it gives a large deformation to the skin, promotes blood flow, and improves physical fatigue such as low back pain and muscle pain.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] The skin-stimulating protrusion tool of Patent Document 1 obtains a predetermined effect by piercing the skin with fine protrusions, and Patent Document 1 does not have the idea of applying non-invasively to the skin. In addition, the skin-stimulating protrusion tool of Patent Document 2 has not been studied from the viewpoint of promoting flare reaction and local blood flow. In addition, as described above, since the massaging tool is used by applying a large deformation to the skin, a large movement is required when using it, and it is not possible to promote blood flow with only a simple operation.

[0007] The present invention relates to a method of using a protrusion tool that does not require an operation of greatly deforming or rubbing the skin, can suppress damage to the stratum corneum, and can obtain a blood flow promoting effect by simply pressing the protrusion tool against the skin.

Means for Solving the Problems

[0008] The present invention relates to a method of using a protrusion tool having fine protrusions protruding from a sheet base. The present invention is preferably a beauty method using the protrusion tool. The protrusion tool preferably contains a thermoplastic resin. The tip diameter of the fine protrusion is preferably 10 μm or more and 400 μm or less. The present invention is preferably a method of using a protrusion tool, wherein the protrusion tool is pressed against the skin non-invasively or minimally invasively. The present invention is preferably a beauty method of tapping the protrusion tool on the skin.

[0009] The present invention also relates to a protrusion tool that is used by being pressed against the skin non-invasively or minimally invasively. The protrusion tool preferably contains a thermoplastic resin. The protrusion tool preferably has fine protrusions protruding from the sheet base. It is preferable that the tip diameter of the fine protrusion is 10 μm or more and 400 μm or less.

Advantages of the Invention

[0010] According to the method of using the protrusion tool of the present invention, damage to the stratum corneum can be suppressed, and a blood flow promoting effect can be obtained only by pressing the protrusion tool against the skin, and operations such as greatly deforming or rubbing the skin are not required.

Brief Description of the Drawings

[0011]

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DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, the beauty method (method of using the protrusion tool) of the present invention will be described with reference to an example of the protrusion tool 1 used in the method. The protrusion tool 1 used in the present invention has fine protrusions 3 protruding from the sheet base 2. The protrusion tool 1 used in the present invention typically has a flat sheet-like shape as a whole, and has a sheet base 2 and a plurality of fine protrusions 3 protruding from one surface of the sheet base 2. The protrusion tool 1 of a typical example has a square protrusion arrangement region in which a plurality of fine protrusions 3 are arranged in a state of being dispersed in the plane direction. The shape of the protrusion arrangement region is not limited to a square shape, and can be any shape such as a circular shape, an elliptical shape, a rectangular shape, a hexagonal shape, etc. The protrusion tool 1 has a first direction X and a second direction Y orthogonal thereto. Typically, the fine protrusions 3 in the protrusion tool 1 are arranged in a state of being dispersed in the first direction X and the second direction Y. More specifically, a plurality of fine protrusions 3 form a fine protrusion row 3L in which the fine protrusions 3 are arranged at intervals along the second direction Y, and a plurality of such fine protrusion rows 3L are provided. The plurality of fine protrusion rows 3L are arranged at intervals in the first direction X. The fine protrusions 3 constituting the fine protrusion rows 3L adjacent to each other in the first direction X have the same position in the second direction Y. The protrusion tool 1 may have only one fine protrusion row 3L. The protrusion tool 1 has a patch-like form. An example of the protrusion tool 1 having such a configuration is shown in FIG. 1.

[0013] The protrusion tool 1 preferably contains a thermoplastic resin. Specifically, it is preferable that the base material constituting the protrusion tool 1 contains a thermoplastic resin. Typically, it is preferably formed by plastically deforming a base material sheet containing a thermoplastic resin by heating. The heating method of the base material sheet may be a method of heating only a part of the base material sheet or a method of heating the entire base material sheet. As a method of heating only a part of the base material sheet and plastically deforming the base material sheet, there are methods such as inserting a processing needle while applying ultrasonic vibration to the planned position of forming fine protrusions on the base material sheet, and inserting a heated processing needle into the planned position of forming fine protrusions on the base material sheet. As a method of heating the entire base material sheet and plastically deforming the base material sheet, for example, while heating the entire base material sheet with a heating device such as a heater, a method of inserting a processing needle into the planned position of forming fine protrusions on the base material sheet can be mentioned. In these cases, the part other than the part that becomes the protrusion on the base material sheet becomes the sheet base 2. The protrusion tool 1 may have a main body portion containing a thermoplastic resin and having a plurality of fine protrusions 3 dispersed and arranged in the planar direction, and a portion other than the main body portion.

[0014] The fine protrusions of the protrusion tool used in the method of using the protrusion tool of the present invention have a tip diameter WA of 10 μm or more and 400 μm or less. When the tip diameter WA of the fine protrusion 3 is within the above range, when the protrusion tool 1 is pressed against the skin and the fine protrusion 3 is pressed against the skin, the fine protrusion 3 is less likely to damage the stratum corneum. From the viewpoint of making this effect more remarkable, it is preferable that the height H of the fine protrusion 3 is 200 μm or more and 2 mm or less.

[0015] By setting the tip diameter WA of the fine protrusions 3 to be equal to or greater than the aforementioned lower limit, when the protrusion device 1 is applied to the skin, damage to the stratum corneum of the skin can be suppressed. Also, by setting the tip diameter WA of the fine protrusions 3 to be equal to or less than the aforementioned upper limit, the blood flow of the skin can be promoted with a smaller pressing pressure on the skin, and a blood flow promoting effect can be obtained by simple operations such as sticking or pressing once or multiple times. Therefore, for example, when the protrusion device of the present invention is used on made-up skin, it is possible to improve blood flow simply by gently pressing from above the makeup without removing or disturbing the makeup. Further, by setting the height H of the fine protrusions 3 to be equal to or greater than the aforementioned lower limit, when the protrusion device 1 is applied to the skin, it is further possible to suppress a further reduction in the stimulation of the fine protrusions due to deformation of the skin, and more effectively stimulate the skin to further enhance the blood flow promoting effect. Also, by setting the height H of the fine protrusions 3 to be equal to or less than the aforementioned upper limit, it is possible to obtain an effect of further suppressing damage to the stratum corneum of the skin. The degree of the blood flow promoting effect can be determined by various known methods. For example, it is preferable to determine whether a flare reaction occurs in the skin, or to visualize the blood flow distribution with a laser speckle flowmeter (LSFG) for determination. Preferably, in the protrusion device 1 of the present invention, the virtual circle diameter of the fine protrusions 3 (hereinafter, also referred to as "tip curved diameter") WB is 100 μm or more and 1000 μm or less. By setting the tip curved diameter WB of the fine protrusions 3 to be equal to or greater than the aforementioned lower limit, when the protrusion device 1 is applied to the skin, the effect of suppressing damage to the stratum corneum of the skin can be further enhanced. Also, by setting the tip curved diameter WB of the fine protrusions 3 to be equal to or less than the aforementioned upper limit, the blood flow promoting effect can be further enhanced by simple operations such as sticking or pressing once or multiple times.

[0016] The tip diameter WA of the fine protrusions 3 can be measured by the following measurement method A, and the tip curved diameter WB can be measured by the following measurement method B. Figs. 5(a) and (d), (b) and (e), and (c) and (f) respectively show protrusions of the same shape. Fig. 5(a) is an example where the tip diameter WA and the tip curved diameter WB have the same numerical value. (b) is an example showing the tip shape in a state where the tip curved diameter WB is relatively large compared to the tip diameter WA. (c) is an example showing the tip shape in a state where the tip curved diameter WB is relatively small compared to the tip diameter WA. Figs. 5(d) and (e) are examples where the tip curved diameter WB is within the range described later.

[0017] <Measurement Method A for the Tip Diameter WA of the Fine Protrusion> The cross-section of the tip portion 3U of the fine protrusion 3 is observed as shown in Figs. 5(a) to (c) in a state of being magnified at a predetermined magnification using a scanning electron microscope (SEM) or a microscope. Next, as shown in Figs. 5(a) to (c), a virtual straight line ILa is extended along the straight line portion on one side 3a of the two side edges 3a and 3b, and a virtual straight line ILb is extended along the straight line portion on the other side 3b. Then, at the tip side, the position where one side 3a separates from the virtual straight line ILa is obtained as the first tip point 3a1, and the position where the other side 3b separates from the virtual straight line ILb is obtained as the second tip point 3b1. The length of the straight line connecting the first tip point 3a1 and the second tip point 3b1 thus obtained is measured. The measured length of this straight line is taken as the tip diameter WA of the fine protrusion 3. In the case where the side edges 3a and 3b, which are the sides of the fine protrusion 3 rising from the sheet base 2, are curves rather than straight lines, from the intersection of the horizontal line on the upper surface of the sheet base 2 and the vertical line passing through the center of the fine protrusion 3, the intersections where each virtual straight line extended 45° to the left and right with respect to this vertical line contacts the curve of the fine protrusion surface are taken as the left and right virtual two points, and the distance between these left and right virtual two points is taken as the tip diameter WA of the fine protrusion 3.

[0018] <Measurement Method B for the Tip Curved Diameter WB of the Fine Protrusion> The tip 3U of the fine protrusion 3 is observed in a state of being magnified at a predetermined magnification as shown in FIGS. 5(d) to 5(f) using an SEM or a microscope. Next, as shown in FIGS. 5(d) to 5(f), a virtual circle C is assumed along the outer surface shape of the tip. The virtual circle C is the largest among the virtual circles that contact the outer surface of the tip of the tip at at least three locations. The diameter of the virtual circle C assumed in this way is defined as the tip curvature diameter WB of the fine protrusion.

[0019] The height H of the fine protrusion 3 means the distance along the thickness direction Z of the sheet base 2 from the surface of the sheet base 2 on the side where the fine protrusion 3 protrudes to the tip of the fine protrusion 3, and can be measured by the following method. <Method for Measuring Height of Fine Protrusion> The fine protrusion 3 is observed in a state of being magnified at a predetermined magnification as shown in FIG. 3(b) using an SEM or a microscope. Next, as shown in FIG. 3(b), the distance along the thickness direction Z of the sheet base 2 from the surface of the sheet base 2 to the tip of the fine protrusion 3 is measured. The distance measured in this way is defined as the height H of the fine protrusion.

[0020] The protrusion tool 1 preferably includes an adhesive means so that the surface on which the fine protrusions 3 are arranged is fixed to the skin. Specifically, it is preferable that the protrusion tool 1 has an adhesive 4a on the surface on the side where the fine protrusions 3 protrude. The protrusion tool 1 can be used in the form of a patch that can be fixed to the skin via the adhesive 4a. The adhesive 4a is arranged at the peripheral edge of the surface of the sheet base 2 on the side where the fine protrusions 3 protrude. As the adhesive 4a, an adhesive generally used in the technical field of adhesive plasters or the like can be used. An example of this is shown in FIGS. 1 and 2.

[0021] In the method of using the present invention, the protrusion tool 1 is pressed against the skin in a non-invasive or minimally invasive manner. The skin generally has an epidermis including a stratum corneum and a dermis in order from the surface side toward the inside. "Minimally invasive" in the present invention means that when the protrusion tool is pressed against the skin, the epidermis is damaged but the dermis is not damaged. Also, "non-invasive" in the present invention means that the stratum corneum of the skin is not damaged even when the protrusion tool is pressed against the skin. From the viewpoint of further preventing damage to the stratum corneum, the method of the present invention is preferably non-invasive. The method of using the present invention is a method of using a protrusion tool for skin irritation. The skin irritation is preferably skin irritation for cosmetic purposes. That is, the method of using the present invention is preferably a method of using the protrusion tool 1 for cosmetic purposes. The method of use for cosmetic purposes does not include methods of operating, treating, or diagnosing a person. Examples of the cosmetic effects obtained by the method of using the present invention include whitening of the skin at the site where the protrusion tool 1 is pressed, improvement of skin spots, improvement of skin dullness and dark circles, improvement of skin wrinkles, improvement of skin sagging, promotion of skin turnover, and the like. Also, the method of using the protrusion tool of the present invention is preferably a method of applying skin irritation to the site where the protrusion tool 1 is pressed to cause the above cosmetic effects at the site.

[0022] The method of pressing the protrusion tool 1 against the skin is not particularly limited. For example, the protrusion tool 1 may be continuously pressed against the skin for a certain period of time, or the protrusion tool 1 may be pressed against the skin a plurality of times. Examples of the method of pressing the protrusion tool 1 against the skin a plurality of times (tapping) include a method of lightly tapping the protrusion tool 1 a plurality of times. Also, the protrusion tool 1 is attached to the roller 6a of the roller-type auxiliary tool 6 described later, and the roller 6a is rolled on the skin to lightly press the protrusion tool 1 against the skin.

[0023] In the method of using the present invention, when pressing the protrusion tool 1 against the skin, it is preferable to press with a pressure that does not damage the stratum corneum. By doing so, damage to the stratum corneum can be further suppressed. Also, it is preferable to press with a pressure that does not greatly deform the skin. By doing so, for example, blood flow under the skin can be promoted without removing or disturbing makeup on the made-up skin. From the viewpoint of making this effect more remarkable, the pressure for pressing the protrusion tool 1 against the skin is preferably 50 N / cm 2 Hereinafter, more preferably 40 N / cm 2 Hereinafter, even more preferably 30 N / cm 2 Or less.

[0024] Also, when pressing the protrusion tool 1 against the skin, it is preferable to cause a flare reaction in the skin by pressing the protrusion tool 1 against the skin. By doing so, the blood flow promoting effect can be surely achieved. From the viewpoint of making this effect more remarkable, the pressure for pressing the protrusion tool 1 against the skin is preferably 1 N / cm 2 Or more, more preferably 2 N / cm 2 Or more, even more preferably 5 N / cm 2 Or more. Also, from the viewpoint of further suppressing damage to the stratum corneum and surely achieving the blood flow promoting effect, the pressure for pressing the protrusion tool 1 against the skin is preferably 1 N / cm 2 Or more and 50 N / cm 2 Or less, more preferably 2 N / cm 2 Or more and 40 N / cm 2 Or less, even more preferably 5 N / cm 2 Or more and 30 N / cm 2 Or less. Here, 1 N / cm 2 Or more and 50 N / cm 2 Or less means the pressure that an ordinary person can lightly press with their hand.

[0025] The fine protrusion 3 of the protrusion member 1 is typically hollow inside when viewed in a longitudinal cross-section. Specifically, it is preferable that a hollow space is formed through the sheet base 2 and extends to the inside of the fine protrusion 3. In the protrusion member 1, the space inside the fine protrusion 3 is formed in a frustum of a cone shape. In this specification, "hollow" means a space in which the inside of the fine protrusion 3 is not substantially filled with the material forming the fine protrusion. Since the inside of the fine protrusion 3 of the protrusion member 1 of the first embodiment is hollow, it has the following advantages. For example, since various fillers can be arranged in the hollow portion inside the fine protrusion 3, it becomes possible to adjust the rigidity of the fine protrusion 3 according to the type of the filler, and it becomes possible to select the degree of skin irritation according to the symptoms and preferences. Further, if a functional material such as a magnetic material or a heat generating material is arranged inside the fine protrusion 3 as the filler, promotion of blood flow by the functional material can be expected, and skin can be efficiently stimulated. In addition, since the protrusion member 1 of the first embodiment has a hollow that forms an air layer inside the fine protrusion 3, it has a heat insulating effect and the heat capacity of the protrusion member 1 becomes small, so it is difficult to feel a cold sensation compared to a metal needle.

[0026] From the viewpoint of more surely achieving the effect of improving blood flow under the skin by gently pressing when the protrusion member 1 is pressed against the skin, the ratio WA / H of the tip diameter WA of the fine protrusion 3 to the height H of the fine protrusion 3 is preferably 0.005 or more, more preferably 0.01 or more, and still more preferably 0.1 or more. Also, from the viewpoint of obtaining a blood flow promoting effect by a simpler operation, the ratio WA / H is preferably 2 or less, more preferably 1 or less, and still more preferably 0.7 or less. Also, the ratio WA / H is preferably 0.005 or more and 2 or less, more preferably 0.01 or more and 1 or less, and still more preferably 0.1 or more and 0.7 or less (see FIGS. 3(b) and 4).

[0027] From the viewpoint of further suppressing damage to the stratum corneum and also suppressing pain, the tip diameter WA of the fine protrusion 3 is preferably 10 μm or more, more preferably 20 μm or more, and still more preferably 100 μm or more. Also, from the perspective of improving the blood flow promoting effect, the tip diameter WA is preferably 400 μm or less, and from the perspective of exciting a flare reaction on the skin and enabling the confirmation of the blood flow effect also in terms of appearance, it is more preferably 300 μm or less. Also, from the perspective of achieving both of these, the tip diameter WA is preferably 10 μm or more and 400 μm or less, more preferably 20 μm or more and 300 μm or less, and even more preferably 100 μm or more and 300 μm or less (see FIGS. 4(a) to (f)). Also, depending on the use of the protrusion tool 1, for example, when outdoors or when not wanting to change the skin color from above makeup, it may be preferable to obtain the blood flow promoting effect without exciting the flare reaction, as it is possible to obtain the blood flow promoting effect without causing an appearance change. From this perspective, the tip diameter WA is preferably 200 μm or more, and more preferably 250 μm or more and 400 μm or less.

[0028] Regarding the fine protrusion 3, from the perspective of further suppressing damage to the stratum corneum, the tip bending diameter WB measured by the above measurement method B is preferably 100 μm or more, and more preferably 120 μm or more. Also, from the perspective of improving the blood flow promoting effect, the tip bending diameter WB is preferably 1000 μm or less, and more preferably 750 μm or less. Also, from the perspective of achieving both of these, the tip bending diameter WB is preferably 100 μm or more and 1000 μm or less, and more preferably 120 μm or more and 750 μm or less.

[0029] Regarding the height H of the fine protrusion 3, from the perspective of improving the blood flow promoting effect, it is preferably 200 μm or more, more preferably 250 μm or more, and even more preferably 300 μm or more. Also, from the perspective of further suppressing damage to the stratum corneum, the height H is preferably 2000 μm or less, more preferably 1000 μm or less, and even more preferably 500 μm or less. Also, from the perspective of achieving both of these, the height H is preferably 200 μm or more and 2000 μm or less, more preferably 250 μm or more and 1000 μm or less, and even more preferably 300 μm or more and 500 mm or less (see FIG. 3(b)).

[0030] The thickness T of the sheet base 2 of the protrusion tool 1 is preferably 100 μm or more, more preferably 150 μm or more, and still more preferably 200 μm or more from the viewpoint of facilitating gripping the protrusion tool 1 with a finger or the like and making it easier to use the protrusion tool 1. Also, the thickness T is preferably 500 μm or less, more preferably 400 μm or less, and still more preferably 300 μm or less from the viewpoint of facilitating pressing the protrusion tool 1 against the skin. Also, the thickness T is preferably 100 μm or more and 500 μm or less, more preferably 150 μm or more and 400 μm or less, and still more preferably 200 μm or more and 300 μm or less (see Fig. 3(b)).

[0031] The thickness T of the sheet base 2 can be measured by the following method. <Method for Measuring the Height of Micro-Protrusions> The sheet base 2 of the protrusion tool 1 is observed in a state magnified at a predetermined magnification as shown in Fig. 3(b) using SEM or a microscope. Next, as shown in Fig. 3(b), the distance along the thickness direction Z of the sheet base from the surface on the side where the micro-protrusions protrude on the sheet base 2 to the surface on the opposite side is measured. The distance measured in this way is taken as the thickness T of the sheet base.

[0032] The protrusion tool 1 may have only one micro-protrusion 3 or may have a plurality of micro-protrusions 3. However, from the viewpoint of making the effect of obtaining a blood flow promoting effect simply in a wide range while suppressing damage to the stratum corneum more remarkable, it is preferable to have a plurality of micro-protrusions 3. The protrusion tool 1 preferably has a region where the number N of micro-protrusions 3 per 1 cm 2 is as follows when viewed in plan. The number N of micro-protrusions 3 is preferably 10 or more, more preferably 30 or more, and still more preferably 50 or more from the viewpoint of improving the blood flow promoting effect. Also, the number N of micro-protrusions 3 is preferably 500 or less, more preferably 400 or less, and still more preferably 300 or less from the viewpoint of further suppressing damage to the stratum corneum. Also, from the perspective of the compatibility of these, the number N of the fine protrusions 3 is preferably 10 or more and 500 or less, more preferably 30 or more and 400 or less, still more preferably 50 or more and 300 or less.

[0033] In the plan view of the protrusion tool 1, the number of fine protrusions 3 per 1 cm 2 can be measured by the following method. <1 cm 2 Measurement method of the number N of fine protrusions per The number N of the fine protrusions 3 can be measured by counting the number of fine protrusions 3 included in a square region of 1 cm square in the state where the protrusion tool 1 is viewed in plan. When the fine protrusions 3 exist so as to straddle the boundary of the region, and 50% or more of the area of the fine protrusion 3 is included in the region, the fine protrusion 3 is counted as being included in the region. In the case where the dimensions of the region where the fine protrusions 3 are formed are less than 1 cm in length and 1 cm in width, etc., the number N of the fine protrusions 3 is the total area (cm 2 ) of the protrusion arrangement region in which a plurality of fine protrusions 3 are arranged in a state of being dispersed in the planar direction, and the number (pieces) of the protrusions included in the region, and can also be obtained by the number of protrusions / area.

[0034] In the protrusion tool 1 used in the present invention, the fine protrusions 3 constituting the fine protrusion rows 3L adjacent to each other in the first direction X may or may not have the same position in the second direction Y. An example of the former is shown in FIG. 6(a), and an example of the latter is shown in FIG. 6(b). In the latter case, typically, the fine protrusion rows 3L adjacent to each other in the first direction X are out of phase in arranging the fine protrusions 3, and the fine protrusions 3 are arranged in a staggered pattern as a whole.

[0035] Hereinafter, a preferred first embodiment of the method for using the projection tool of the present invention will be described with reference to FIG. 4 by taking the case of using the projection tool 1 as an example. Specifically, since the projection tool 1, which has the adhesive 4a as an adhesion means, is adhered to the skin with the surface on which the fine projections 3 of the projection tool 1 protrude facing the skin, when the projection tool 1 is adhered to the skin, the projection tool 1 is fixed to the skin. The projection tool 1 may be pressed against the skin while being adhered to the skin, or the projection tool 1 may be pressed against the skin after being adhered to the skin. According to the usage method of the first embodiment, since the projection tool 1 is pressed against the skin in a non-invasive or minimally invasive manner, damage to the stratum corneum can be suppressed. Further, when the projection tool 1 is pressed against the skin, the fine projections 3 press against the skin, so that a blood flow promoting effect can be obtained at the portion where the fine projections 3 are pressed. In order to apply the projection tool 1 to the skin, for example, as shown in FIG. 4, it is only necessary to attach the projection tool 1 to the skin. Different from the conventional massaging tools, operations such as greatly deforming or rubbing the skin are unnecessary. At this time, from the viewpoint of obtaining a continuous effect, the sticking time is preferably 10 minutes or more, more preferably 20 minutes or more, and even more preferably 30 minutes or more. Also, from the viewpoint of not stimulating the skin more than necessary, the sticking time is preferably 12 hours or less, more preferably 9 hours or less, and even more preferably 6 hours or less. Also, from the viewpoint of achieving both of these, the sticking time is preferably 10 minutes or more and 12 hours or less, more preferably 20 minutes or more and 9 hours or less, and even more preferably 30 minutes or more and 6 hours or less. Thus, according to the usage method of the projection tool of the first embodiment, it is possible to obtain a blood flow promoting effect while suppressing damage to the stratum corneum, and there is no need to perform an operation of greatly deforming the skin.

[0036] Further, the projection member 1 may be provided with an adhesive sheet 4 having an adhesive 4a on a surface of the sheet base portion 2 of the projection member 1 opposite to the surface on which the fine projections 3 are arranged. The adhesive sheet 4 preferably includes an adhesive base sheet 4s having an area larger than the area of the sheet-shaped sheet base portion 2 and an adhesive 4a applied to the entire surface of one side of the adhesive base sheet 4s. An example of this is shown in FIG. 7. As the adhesive base sheet 4s, non-woven fabrics, films, etc. generally used in technical fields such as band-aids can be used. The projection member 1 shown in FIG. 7 can also be used by being attached to the skin, similarly to the projection member 1 shown in FIGS. 1 and 2.

[0037] Further, the projection member 1 preferably has either or both of non-water-soluble and non-oil-soluble properties. By doing so, when using the projection member 1 on the skin, it is possible to prevent the projection member 1 from dissolving due to sweat and sebum, and to maintain the shape of the projection member 1, so that the projection member 1 can be used stably for a long time.

[0038] Next, another embodiment of the method of using the projection member of the present invention will be described. Regarding these embodiments, only the points different from the embodiments described above will be described, and for the points not particularly described, the descriptions of the embodiments described above will be appropriately applied, and the same members are denoted by the same reference numerals. Examples of these are shown in FIGS. 8 and 9 and FIGS. 10 and 11. In FIG. 8, for the sake of convenience of explanation, the sizes of the projection member 1B and the fine projections 3 to be described later are shown greatly exaggerated, and in FIGS. 9 to 11, for the sake of convenience of explanation, the size of the fine projections 3 is greatly exaggerated.

[0039] The projection member used in the present invention preferably has a fixing portion for fixing to the user's finger. An example of a projection member having a fixing portion for fixing to the user's finger (hereinafter also referred to as "projection member 1B") will be described. The protrusion tool 1B has an adhesive 4a on the surface of the sheet base 2 opposite to the surface on which the fine protrusions 3 protrude, and the adhesive 4a serves as a fixing portion. The protrusion tool 1B shown in FIG. 8 can be attached to a finger or the like via the adhesive 4a. The surface of the adhesive 4a opposite to the sheet base 2 may be covered with a release sheet made of a film, non-woven fabric, paper, or the like before use of the protrusion tool 1B. This example is shown in FIG. 8.

[0040] The usage method of the protrusion tool 1B shown in FIG. 8 will be described. When the surface of the adhesive 4a opposite to the sheet base 2 is covered with a release sheet, the release sheet is peeled off to expose the surface of the adhesive 4a opposite to the sheet base 2. Then, as shown in FIG. 8, the protrusion tool 1 is fixed in a state where the surface opposite to the surface on which the fine protrusions 3 protrude faces the user's finger. Specifically, the protrusion tool 1 is attached to the user's finger via the adhesive 4a. Thereafter, the protrusion tool 1 is pressed against the skin. The skin against which the protrusion tool 1 is pressed may be the user's own or the skin of a person other than the user. According to the usage method for the second embodiment, since the protrusion tool 1B fixed to the finger can be pressed against the skin, the protrusion tool 1 can be easily pressed against an arbitrary location or tapped several times. Also, the pressing time, pressure, and number of times when pressing the protrusion tool 1 can be arbitrarily changed according to preferences and the desired effects. At this time, it is preferable to press multiple times. However, from the viewpoint of surely giving a stimulus to the skin each time, the pressing time per time is preferably 0.1 second or more, more preferably 0.5 second or more, and still more preferably 1 second or more. Also, from the viewpoint of efficiently giving multiple stimuli to the skin, the pressing time per time is preferably 30 seconds or less, more preferably 10 seconds or less, and still more preferably 5 seconds or less. Also, from the viewpoint of achieving both of these, the pressing time per time is preferably 0.1 second or more and 30 seconds or less, more preferably 0.5 second or more and 10 seconds or less, and still more preferably 1 second or more and 5 seconds or less.

[0041] As another example, the protrusion tool 1B has a notch 2s at the peripheral edge of the region where the fine protrusions 3 protrude on the sheet base 2, and the notch 2s serves as a fixing part. By inserting a finger or the like into the notch 2s, the protrusion tool 1B can be fixed in a state where the surface opposite to the surface where the fine protrusions 3 protrude faces the user's finger. This example is shown in Fig. 9(a).

[0042] As another example, another modified example of the protrusion tool 1B is shown. The protrusion tool 1B shown in Fig. 9(b) has a main body part 5 formed by the sheet base 2 having a cylindrical shape with one end closed. The main body part 5 is hollow inside, and a finger or the like can be inserted into the inside of the main body part 5. This protrusion tool 1B has a finger-sack-like form. In this protrusion tool 1B, the main body part 5 serves as a fixing part. By inserting a finger or the like into the inside of the main body part 5, the protrusion tool 1B can be fixed in a state where the surface opposite to the surface where the fine protrusions 3 protrude faces the user's finger. This example is shown in Fig. 9(b).

[0043] The protrusion tool used in the present invention is preferably fixed to a tapping aid. Hereinafter, the protrusion tool fixed to the tapping aid is also referred to as "protrusion tool 1C". The protrusion tool 1C is preferably used by being attached to the tapping aid. The tapping aid is an aid that facilitates the operation of repeatedly pressing the protrusion tool 1C lightly against the skin. It is preferable to use a roller-type aid 6 as an example of the tapping aid. From the viewpoint of making it easier to repeatedly perform the above operation, it is preferable for the tapping aid to include a rotatable roller 6a like the roller-type aid 6. The roller-type aid 6 preferably includes a rotatable roller 6a and a gripping part 6b that rotatably supports the roller 6a, and it is more preferable that the gripping part 6b can be gripped and operated with one hand. This example is shown in Fig. 10. The roller-type auxiliary tool 6 includes a gripping portion 6b that rotatably supports the roller 6a, thereby making it even easier to repeat the above operation. Further, by gripping the gripping portion 6b of the roller-type auxiliary tool 6 to which the protrusion tool 1C is fixed with one hand and performing an operation such as gently pressing the protrusion tool 1C against the skin, the operation can be easily performed over a wide area of the skin, and the protrusion tool 1C can also be easily pressed against any location.

[0044] The protrusion tool 1C is preferably attached to the roller 6a in a state where the surface opposite to the surface on which the fine protrusions 3 protrude is directed toward the surface of the roller 6a. As a means for attaching the protrusion tool 1C to the circumferential surface of the roller 6a, methods such as providing an adhesive layer 4a on the surface of the protrusion tool 1C opposite to the surface on which the fine protrusions 3 protrude or on the circumferential surface of the roller 6a, and a method of fixing the protrusion tool 1C with a pin or the like in a state where it is attached to the circumferential surface of the roller 6a can be mentioned. The protrusion tool 1C preferably has an adhesive layer 4a on the surface opposite to the surface on which the fine protrusions 3 protrude of the protrusion tool 1C as a fixing portion for fixing the protrusion tool 1C to the tap auxiliary tool. The adhesive layer provided on the circumferential surface of the protrusion tool 1C or the roller 6a is preferably covered and protected with a release sheet, and when fixing the protrusion tool 1C to the roller 6a, the release sheet is peeled off and used. The roller-type auxiliary tool 6 may include a roller having a polygonal cross-section instead of the roller 6a having a circular cross-section, and may also be used by rolling the roller 6a alone on the skin without having the gripping portion 6b. The roller having a polygonal cross-section has, for example, a triangular, quadrangular, pentagonal to octagonal, or nonagonal or higher cross-section. A single continuous protrusion tool 1C may be wound around a plurality of surfaces constituting the circumferential surface of the roller having a polygonal cross-section, or the protrusion tool 1C may be separately fixed to each of the plurality of surfaces. The axial direction of the roller 6a and the axial direction of the gripping portion 6b may coincide (see FIG. 10) or may intersect (see FIG. 11).

[0045] Next, matters common to the above-described embodiments will be described. The protrusion tools 1, 1B, and 1C of each of the above-described embodiments preferably contain a thermoplastic resin from the viewpoints of material handleability, improvement in the strength and workability of the protrusion tool, and ensuring hardness in the fine protrusions 3 to obtain a blood flow promoting effect. Examples of the thermoplastic resin include polyolefin, polyester, polyamide, polyamideimide, polyetheretherketone, polyetherimide, polyvinyl chloride, acrylic resin, polystyrene resin, etc., or combinations thereof. Examples of the polyolefin include polypropylene, polyethylene, etc. Examples of the polyester include polyethylene terephthalate, polyfatty acid ester, polylactic acid, polycaprolactone, polybutylene succinate, etc. Examples of the polyamide include nylon, etc. From the viewpoint of biodegradability, polyfatty acid ester is preferably used. Specific examples of the polyfatty acid ester include polylactic acid, polyglycolic acid, or combinations thereof. Either one of the sheet base 2 and the fine protrusions 3 in the protrusion tools 1, 1B, and 1C may contain a thermoplastic resin, or both the sheet base 2 and the fine protrusions 3 may contain a thermoplastic resin. It is preferable that both the sheet base 2 and the fine protrusions 3 contain a thermoplastic resin as the main constituent material. The main constituent material means that the mass of the thermoplastic resin is 50% or more of the total mass of the base sheet of the protrusion tool, and it is more preferable that the mass of the thermoplastic resin is 100%. The protrusion tools 1, 1B, and 1C may also be made of a resin other than the thermoplastic resin. The protrusion tools 1, 1B, and 1C may contain, in addition to the thermoplastic resin, a plasticizer, a coloring agent, a drug, a resin other than the thermoplastic resin, etc. Examples of the resin other than the thermoplastic resin include a thermosetting resin, a photocurable resin, etc.

[0046] The protrusion members 1, 1B, and 1C are used by being pressed against the skin, and are preferably used by being pressed for a certain period of time or multiple times. From the viewpoint of maintaining the blood flow promoting effect by the fine protrusions, unlike the protrusions made of hyaluronic acid described in Patent Document 1, when applied to the skin, it is preferably formed of a material that is not a material that dissolves in moisture such as sweat present on the skin.

[0047] The ratio of the mass of the thermoplastic resin contained in the protrusion members 1, 1B, and 1C to the total mass of the protrusion members 1, 1B, and 1C is preferably 50% or more, more preferably 60% or more, and still more preferably 70% or more. Also, the ratio of the mass of the thermoplastic resin is preferably 100% from the viewpoints of the handleability of the material, the strength and processability of the protrusion member, and ensuring hardness in the fine protrusions and improving the blood flow promoting effect, and is realistically 100% or less. Also, the ratio of the mass of the thermoplastic resin is preferably 50% or more and 100% or less, more preferably 60% or more and 100% or less, and still more preferably 70% or more and 100% or less.

[0048] Although the present invention has been described based on its preferred embodiments, the present invention is not limited to the above-described embodiments and can be appropriately changed. For example, in each of the above-described embodiments, the fine protrusion 3 was hollow inside, but the fine protrusion 3 may be solid.

[0049] Also, as long as the protrusion members 1, 1B, and 1C are used non-invasively or minimally invasively to the skin, in addition to the fine protrusions 3, they may have protrusions that do not satisfy either of the above (1) and (2). Among all the protrusions that the protrusion members 1, 1B, and 1C have, the ratio of the fine protrusions 3 is preferably 50% or more and 100% or less, more preferably 60% or more, and still more preferably 70% or more. Among all the protrusions that the protrusion members 1, 1B, and 1C have, the ratio of the fine protrusions 3 is most preferably 100%. In other words, it is most preferable that all the protrusions that the protrusion members 1, 1B, and 1C have are the fine protrusions 3.

[0050] Also, there are no particular restrictions on the arrangement pattern of the fine protrusions 3. For example, in the protrusion tools 1, 1B, and 1C, the fine protrusions 3 are arranged in an array (single or multiple rows), but in addition to the array shape, any arrangement such as an arrangement in which a plurality of fine protrusions 3 are arranged in an arbitrary shape such as a circle or a star may be used.

[0051] Regarding the above-described embodiments of the present invention, the following additional remarks are disclosed. <1> A method of using a protrusion tool having fine protrusions protruding from a sheet base, wherein the protrusion tool contains a thermoplastic resin, the tip diameter of the fine protrusion is 10 μm or more and 400 μm or less, and the protrusion tool is pressed against the skin in a non-invasive or minimally invasive manner, the method of using a protrusion tool for skin irritation.

[0052] <2> The method of using the protrusion tool according to <1>, wherein the height of the fine protrusion is 200 μm or more and 2 mm or less. <3> The method of using the protrusion tool according to <1> or <2>, wherein the skin irritation is skin irritation for cosmetic purposes. <4> The method of using the protrusion tool according to any one of <1> to <3>, wherein the tip diameter of the fine protrusion is 10 μm or more, preferably 20 μm or more, more preferably 100 μm or more. <5> The method of using the protrusion tool according to any one of <1> to <4>, wherein the tip diameter of the fine protrusion is 400 μm or less, preferably 300 μm or less.

[0053] <6> The method of using the protrusion tool according to any one of <1> to <5>, wherein the height of the fine protrusion is 200 μm or more, preferably 250 μm or more, more preferably 300 μm or more. <7> The method for using the projection tool according to any one of <1> to <6>, wherein the height of the fine projections is 2000 μm or less, preferably 1000 μm or less, more preferably 500 μm or less. <8> The method for using the projection tool according to any one of <1> to <7>, wherein the ratio of the mass of the thermoplastic resin contained in the projection tool to the total mass of the projection tool is 50% or more and 100% or less. <9> When pressing the projection tool against the skin, Press with a pressure that does not damage the stratum corneum. The method for using the projection tool according to any one of <1> to <8>.

[0054] <10> When pressing the projection tool against the skin, Preferably at 1 N / cm 2 or more and 50 N / cm 2 or less. The method for using the projection tool according to any one of <1> to <9>. <11> By pressing the projection tool against the skin, causing a flare reaction in the skin. The method for using the projection tool according to any one of <1> to <10>. <12> The method for using the projection tool according to any one of <1> to <11>, which has a plurality of the fine projections. <13> In the plan view of the projection tool, 1 cm 2 The method for using the projection tool according to any one of <1> to <12>, which has a region where the number of the fine projections per hit is 10 or more and 500 or less. <14> The method for using the projection tool according to <13>, wherein the number of the fine projections in the region is 10 or more, preferably 30 or more, more preferably 50 or more. <15> The method for using the projection tool according to <13> or <14>, wherein the number of the fine projections in the region is 500 or less, preferably 400 or less, more preferably 300 or less. <16> The method of using the protrusion tool according to any one of <1> to <15> above, wherein the ratio of the tip diameter of the fine protrusion to the height of the fine protrusion (tip diameter / height) is 0.005 or more and 2 or less. <17> The method of using the protrusion tool according to any one of <1> to <16> above, wherein the ratio of the tip diameter of the fine protrusion to the height of the fine protrusion (tip diameter / height) is 0.005 or more, preferably 0.01 or more, more preferably 0.1 or more. <18> The method of using the protrusion tool according to any one of <1> to <17> above, wherein the ratio of the tip diameter of the fine protrusion to the height of the fine protrusion (tip diameter / height) is 2 or less, preferably 1 or less, more preferably 0.7 or less.

[0055] <19> The method of using the protrusion tool according to any one of <1> to <18> above, wherein the protrusion tool is fixed to the circumferential surface of a rotatable roller with the surface opposite to the surface on which the fine protrusions protrude facing the roller side, and the roller is pressed against the skin. <20> The roller is provided at one end of a grip portion that can be gripped with one hand, The method of using the protrusion tool according to <19> above, wherein the grip portion is gripped and the roller is pressed against the skin. <21> The protrusion tool has a fixing portion for fixing the protrusion tool to a user's finger, The method of using the protrusion tool according to any one of <1> to <18> above, wherein the protrusion tool is fixed in a state where the surface opposite to the surface on which the fine protrusions protrude faces the user's finger, and is pressed against the skin. <22> The tip diameter of the fine protrusion is 400 μm or less, preferably 300 μm or less, When the protrusion tool is pressed against the skin, the pressing time per stroke is preferably 30 seconds or less, more preferably 10 seconds or less, still more preferably 5 seconds or less. The method of using the protrusion tool according to <21> above. <23> The method for using the projection device according to any one of <1> to <28>, wherein the projection device is attached to the skin with the surface on which the fine projections protrude facing the skin. <24> The method for using the projection device according to <23>, wherein the time for which the projection device is attached to the skin is 10 minutes or more, preferably 20 minutes or more, more preferably 30 minutes or more.

[0056] <25> A projection device for skin irritation that is used by pressing against the skin in a non-invasive or minimally invasive manner, comprising a thermoplastic resin, having fine projections protruding from a sheet-like base, a projection device, wherein the tip diameter of the fine projections is 10 μm or more and 400 μm or less. <26> The projection device according to <25>, wherein the height of the fine projections is 200 μm or more and 2 mm or less. <27> The projection device according to <25> or <26>, wherein the tip diameter of the fine projections is 50 μm or more, preferably 100 μm or more. <28> The projection device according to any one of <25> to <27>, having a plurality of the fine projections. <29> In the plan view of the projection device, 1 cm 2 The projection device according to any one of <25> to <28>, having a region where the number of the fine projections per hit is 10 or more and 500 or less. <30> The projection device according to any one of <25> to <29>, wherein the tip curvature diameter of the fine projections is 100 μm or more and 1000 μm or less, preferably 120 μm or more and 750 μm or less.

[0057] <31> The projection device according to any one of <25> to <29>, having a tap assist or a fixing portion for fixing to the finger of the user. <32> The projection tool according to any one of <25> to <30>, having an adhesive on the surface of the projection tool on which the fine projections protrude. <33> It is used by being attached to a tap assist tool. The tap assist tool has a roller to which the projection tool is attached and a gripping portion for gripping the tap assist tool. The projection tool according to any one of <25> to <30>, wherein the surface of the projection tool opposite to the surface on which the fine projections protrude is attached to the roller in a state facing the surface of the roller. <34> A beauty method using a projection tool having fine projections protruding from a sheet base, The projection tool contains a thermoplastic resin. The tip diameter of the fine projections is 10 μm or more and 400 μm or less. A beauty method of tapping the projection tool on the skin.

Example

[0058] Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to such examples. (Example 1) A projection tool having the same configuration as the projection tool 1B shown in FIG. 9(b) was manufactured. The dimensions of the fine projections of the projection tool in Example 1, the number of fine projections per 1 cm 2 are as shown in Table 1. The projection tool was formed by subjecting a base material sheet made of 100% polylactic acid, which is a thermoplastic resin, to projection formation processing with a processing needle to which ultrasonic vibration was applied. In Example 1, tapping was used as a method of pressing the projection tool against the skin. Specifically, the projection tool was fixed to the finger, and the skin was gently tapped 10 to 20 times in 10 seconds with a force that does not damage the stratum corneum. (Examples 2 and 3) A projection tool was manufactured in the same manner as in Example 1 except that the tip diameter of the fine projections was changed as shown in Table 1. In Examples 2 and 3, the same method as in Example 1 was used as a method of pressing the projection tool against the skin. (Example 4) A projection tool having the same configuration as the projection tool 1C shown in FIG. 10 was manufactured. It was formed in the same manner as in Example 1, except that the dimensions of the fine projections of the projection tool were as shown in Table 1. In Example 4, tapping was used as a method of pressing the projection tool against the skin. Specifically, the projection tool was fixed to a roller-type auxiliary tool, and the roller of the roller-type auxiliary tool to which the projection tool was fixed was pressed against the skin with a force that did not damage the stratum corneum for 30 seconds and rolled on the skin. (Example 5) A projection tool having the same configuration as the projection tool 1 shown in FIG. 1 was manufactured. It was formed in the same manner as in Example 1, except that the dimensions of the fine projections of the projection tool were as shown in Table 1. In Example 5, as a method of pressing the projection tool against the skin, a method of attaching the projection tool to the skin was used. Specifically, the projection tool was pressed against the skin with a force that did not damage the stratum corneum for 60 minutes and attached to the skin.

[0059] (Comparative Example 1) A projection tool was manufactured in the same manner as in Example 1, except that the tip diameter of the fine projection was changed as shown in Table 1. In Comparative Example 1, the same method as in Example 1 was used as a method of pressing the projection tool against the skin. (Comparative Example 2) The height of the fine projection was changed as shown in Table 1, and the method of pressing the projection tool against the skin was to tap the skin with a pressing force of 70 N / cm 2 10 to 20 times in 10 seconds. A projection tool was manufactured in the same manner as in Example 1. In Comparative Example 2, the same method as in Example 1 was used as a method of pressing the projection tool against the skin.

[0060] [Non-invasive evaluation] For Examples 1 to 5 and Comparative Examples 1 and 2, the non-invasiveness was evaluated by the following method. By the methods of Examples 1 to 5 and Comparative Examples 1 and 2 respectively, the projection tool was pressed against human excised skin (frozen skin TRANSKIN from BPI). Specifically, after thawing and conditioning the human excised skin at room temperature, with the side of the projection tool where the fine projections protrude facing the skin, the projection tool was pressed against the skin by the methods of Examples 1 to 5 and Comparative Examples 1 and 2 respectively. The skin with the projection tool pressed thereon was frozen with liquid nitrogen, then the projection tool was removed, and a cryomicrotome described below was used to cut in the thickness direction of the skin so as to pass through the portion where the tip of the fine projection of the projection tool pressed against the skin. The obtained sample cut surface was observed at -120 °C using a scanning electron microscope described below, and the non-invasiveness was evaluated according to the following criteria. The evaluation results are shown in Table 1. A: The stratum corneum is present substantially undamaged at the portion where the tip of the fine projection pressed. B: The stratum corneum is partially damaged at the portion where the tip of the fine projection pressed. C: The stratum corneum is not present at the portion where the tip of the fine projection pressed. The skin cutting was performed using a cryomicrotome (model number: EM FC7, manufactured by Leica Microsystems GmbH) controlled by a cryosystem device (manufactured by Quorum Technologies Ltd, model number: PP3010T). The observation of the cut surface was performed using a scanning electron microscope (model number: JSM-7600F, manufactured by JEOL Ltd.) equipped with a detector (LEI: Lower secondary Electron Image) and a cryosystem (PP3010T manufactured by Quorum).

[0061] 〔Evaluation of the duration and intensity of the flare reaction〕 For Examples 1 to 5 and Comparative Example 1, the duration and intensity of the flare reaction were evaluated by the following method. By the methods of Examples 1 to 5 and Comparative Example 1 respectively, the projection tool was pressed against the skin of the subject. Then, the portion where the projection tool was pressed was observed under a microscope at a magnification of 30 times, and the duration and intensity of the flare reaction were evaluated according to the following criteria. The evaluation results are shown in Table 1. <Evaluation Criteria for the Duration of the Flare Reaction> A: 30 minutes or more B: More than 15 minutes and less than 30 minutes C: Less than 15 minutes D: No flare reaction occurs <Evaluation Criteria for the Intensity of the Flare Reaction> A: There is a clear red (erythema) change on the skin. B: There is a faint red (erythema) change on the skin. C: There is no change in the skin color.

[0062] 〔Evaluation of the Blood Flow Promotion Effect〕 For Examples 1 to 5 and Comparative Example 1, the blood flow promotion effect was evaluated by the following method. According to the methods of Examples 1 to 5 and Comparative Example 1 respectively, the protrusion tool was pressed against the skin of the subject. Then, the area where the protrusion tool was pressed was observed by laser speckle flowgraphy (LSFG), and the blood flow promotion effect was evaluated according to the following criteria. The evaluation results are shown in Table 1. A: The change in MBR (blood flow volume) is 3 times or more compared to before pressing the protrusion tool B: The change in MBR is more than 2 times and less than 3 times compared to before pressing the protrusion tool C: The change in MBR exceeds 1 time and is less than 2 times compared to before pressing the protrusion tool D: There is no change in MBR compared to before pressing the protrusion tool

[0063]

Table 1

[0064] As shown in Table 1, in Comparative Example 1, the non-invasive evaluation is A, but the evaluations of the blood flow promoting effect, the intensity of the flare reaction, and the duration of the flare reaction are D or C. That is, it can be seen that Comparative Example 1 can obtain a result of suppressing the damage of the stratum corneum, while the blood flow promoting effect cannot be obtained. Further, in Comparative Example 2, the evaluations of the blood flow promoting effect, the intensity of the flare reaction, and the duration of the flare reaction are all A, but the non-invasive evaluation is C. That is, it can be seen that Comparative Example 2 can obtain the blood flow promoting effect, while the stratum corneum will be damaged. For Comparative Examples 1 and 2, in Examples 1 to 5, the non-invasive evaluation is A or B, and the evaluations of the blood flow promoting effect, the intensity of the flare reaction, and the duration of the flare reaction are A, B, or C. That is, it can be seen that Examples 1 to 5 can suppress the damage of the stratum corneum and can obtain the blood flow promoting effect.

Explanation of Reference Signs

[0065] 1, 1B, 1C protrusion tool 2 sheet base 3 fine protrusions H height of fine protrusion T thickness of base WA tip diameter of fine protrusion X first direction Y second direction

Claims

1. A beauty method using a protrusion tool having fine protrusions protruding from a sheet base, comprising: The protruding member includes a thermoplastic resin, The tip diameter of the fine protrusions is 10 μm or more and 400 μm or less, The cosmetic method comprises tapping the protruding tool onto the skin.

2. 2. The cosmetic method according to claim 1, for whitening the skin, improving skin blemishes, improving dullness or dark circles on the skin, improving skin wrinkles, improving sagging skin, or promoting skin turnover at the site where the protrusion tool is tapped.

3. The cosmetic method according to claim 1 or 2, wherein the protruding tool is tapped against the skin in a non-invasive or minimally invasive manner.

4. When tapping the protruding tool on the skin, The cosmetic method according to any one of claims 1 to 3, wherein tapping is performed with a pressure that does not damage the stratum corneum.

5. When tapping the protruding tool on the skin, 1 N / cm ２ More than 50N / cm ２ The cosmetic method according to any one of claims 1 to 4, wherein tapping is performed with the following pressure.

6. The tapping is performed by pressing the protruding tool against the skin multiple times, The cosmetic method according to any one of claims 1 to 5, wherein the pressing time per one time is from 0.1 seconds to 30 seconds.

7. In a plan view of the protruding tool, ２ The cosmetic method according to any one of claims 1 to 6, wherein the number of said microprotrusions per unit area is 30 or more.

8. The cosmetic method according to any one of claims 1 to 7, wherein the protruding tool is fixed to a tapping auxiliary tool.

9. The cosmetic method according to any one of claims 1 to 8, wherein the protrusion tool is fixed to the circumferential surface of a rotatable roller with a surface opposite to a surface from which the fine protrusions protrude facing the roller, and the roller is tapped against the skin.

10. The protruding member has a fixing portion for fixing the protruding member to a finger of a user, The cosmetic method according to any one of claims 1 to 9, wherein the protrusion tool is fixed in a state in which a surface opposite to a surface from which the fine protrusions protrude is opposed to a finger of a user, and the skin is tapped with the protrusion tool.

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