Massage cosmetic and method for manufacturing the same

Abstract

This invention provides a massage cosmetic and a method for manufacturing the same, which can be massaged into the skin by rubbing it with the hands or other means to promote blood circulation and relax muscles, thereby reducing skin swelling and providing a lifting effect. Furthermore, by appropriately washing away any oils such as wax remaining on the skin during showering after use, it is possible to achieve both the emollient effect of the oils and a reduction in stickiness. [Solution] The massage cosmetic of the present invention contains a soap base made of an alkali salt of a fatty acid, has a water content of 3% by mass or less of the total amount of ingredients, and the soap base is contained in the massage cosmetic as particles dispersed in an immiscible state from other ingredients, and functions as a scrub agent having a massage effect. The dispersed particles of the soap base have a cross-section in the short axis direction of one of the shapes of a circle, ellipse, or polygon, with a diameter, major axis, and average length of the long side or diagonal being 0.2 mm or more and less than 0.9 mm, and a length in the major axis direction of 3 mm or less.

Description

[[Technical Field]]

[0001] The present invention relates to a massage cosmetic for use in body massage and a method for producing the same. [[Background Art]]

[0002] Typical examples of body massage cosmetics include O / W-type and W / O-type creams, and balm-type cosmetics obtained by solidifying oil. The purpose of using these cosmetics is to improve skin complexion and impart a bright impression to skin that tends to be dull, through their function of supporting the physical effect of massage itself. Furthermore, effects such as loosening stiff muscles, lifting the skin, and reducing puffiness can also be expected. In particular, balm-type cosmetics with high oil content are said to be excellent in sliding properties on the skin, prevent evaporation of skin moisture due to the oil component, and have high emollient effects of retaining moisture and softening the skin.

[0003] In addition, in order to enhance the massage effect of balm-type cosmetics with high oil content, incorporating solid particle scrub components is expected to increase skin friction and improve blood flow. As solid particle scrub components commonly incorporated in cosmetics, there have been proposed components obtained by pulverizing fruit pits, naturally derived components such as crude salt, pigments, or cellulose fibers, metal soap scrubs such as calcium salts, magnesium salts, and zinc salts of fatty acids disclosed in Japanese Patent No. 3855477 entitled "Peeling Cosmetic", and further scrub agents of synthetic materials such as polyethylene beads and synthetic wax. Among these, due to the growing preference for natural products in recent years, there is a tendency that environmentally friendly components that are naturally derived and biodegradable after use are favored. [[Prior Art Documents]] [[Patent Documents]]

[0004] [[Patent Document 1]] Japanese Patent No. 3855477 [[Summary of the Invention]] [[Problems to be Solved by the Invention]]

[0005] However, balm-type body massage cosmetics have been criticized for leaving the skin feeling sticky after use due to their high oil content, requiring the extra step of washing off the oil with body soap or regular soap afterward. Furthermore, they can excessively remove the beneficial emollient effects on the skin.

[0006] Balm-type body massage cosmetics can contain solid granular scrubbing agents to enhance their massage effect. Among scrubbing agents, naturally derived scrubbing agents are environmentally friendly because they are biodegradable after use, but it has been difficult to significantly improve their massage effect due to the difficulty in adjusting their shape, hardness, and particle size. Furthermore, while metal soaps and synthetic resin scrubbing components can be expected to provide a high massage effect, they have not met the needs of the recent growing preference for natural products and increased environmental awareness.

[0007] Therefore, there was a strong demand for a novel body massage cosmetic that possessed environmentally friendly materials as an ingredient with the function of a scrub agent that could be expected to have a high massage effect, and that could achieve both emollient properties and a refreshing feeling after use by easily removing excess wax along with the scrub agent during showering after massage.

[0008] The present invention provides a massage cosmetic and a method for manufacturing the same, which not only promotes blood circulation and relaxes muscles by massaging the skin with the hands to reduce skin swelling and lift the skin, but also allows for the emollient effect of oils and other oils remaining on the skin to be adequately washed away in the shower after use, thereby achieving both the emollient effect of oils and a reduction in stickiness. [Means for solving the problem]

[0009] The inventors of the present invention conducted diligent research to solve the above problems and, as a result, discovered that by selecting a specific water-soluble soap base as an ingredient having the function of a scrubbing agent, and dispersing it in the form of particles of a certain size in a state of immiscibility with other ingredients in a body massage balm, a body massage cosmetic that exhibits the desired effects can be obtained, thus completing the present invention.

[0010] This invention involves incorporating water-soluble soap bases, such as sodium fatty acid salts or potassium fatty acid salts, into an oily body massage balm in the form of granules containing particles of a certain size. This process allows the soap bases to be dispersed in the body massage balm in an immiscible state. As a result, the water-soluble soap bases, acting as a scrubbing agent with expected massage effects, remove excess wax during showering after massage, thus achieving both emollient properties and a refreshing feeling after use. This has resulted in a novel body massage cosmetic. In other words, the present invention is as follows:

[0011] [1] The present invention provides a massage cosmetic comprising a soap base made of an alkali salt of a fatty acid, wherein the water content is 3% by mass or less of the total amount of components, characterized in that the soap base is contained in the massage cosmetic as columnar particles dispersed in an immiscible state with respect to other components.

[0012] [2] The present invention provides the massage cosmetic described in [1], characterized in that the columnar particles of the soap base dispersed in the massage cosmetic have a cross-section in the short axis direction that is one of the shapes selected from the group consisting of a circle, an ellipse, and a polygon, and the diameter of the circle, the major axis of the ellipse, and the length of the long side (one side) of the triangle or quadrilateral in the polygon, or the average length of the diagonals of a pentagon or more, are each 0.2 mm or more and less than 0.9 mm.

[0013] [3] The present invention provides the massage cosmetic described in [1] or [2] above, characterized in that the soap base particles contained in the massage cosmetic in a dispersed state have a length in the longitudinal direction of 3 mm or less.

[0014] [4] The present invention provides a massage cosmetic according to any one of [1] to [3] above, characterized in that the soap base is contained in an amount of 10 to 30% by mass relative to the total mass of the massage cosmetic.

[0015] [5] The present invention provides the soap base as component (A), and component (B): liquid oil at room temperature, component (C): solid oil or solid higher alcohol at room temperature, component (D): emulsifying surfactant, and component (E): cleansing surfactant in the following amounts relative to the total mass of the massage cosmetic, namely, Ingredients (A): The aforementioned soap base, 10-30% by mass Component (B): Room temperature liquid oil 35~65% by mass Ingredients (C): Room temperature solid oil or room temperature solid higher alcohol 3-10% by mass Ingredients (D): Emulsifying surfactant 0.3-3% by mass Ingredients (E): Cleansing surfactant 5-10% by mass The present invention provides a massage cosmetic containing any of the above [1] to [4].

[0016] [6] The present invention provides the massage cosmetic described in [5] above, which comprises, in addition to the components (A), (B), (C), (D), and (E) above, component (F): oily solvent in an amount of 4% by mass or less relative to the total mass of the massage cosmetic.

[0017] [7] In addition to the components (A), (B), (C), (D), and (E) described above, the present invention includes a component (G) different from component (A); a scrubbing agent, in an amount of 10% by mass or less relative to the total mass of the massage cosmetic, The massage cosmetic described in [5] above is characterized in that the component (G): scrubbing agent is at least one scrubbing agent selected from the group consisting of naturally derived scrubbing agents, divalent metal salt soap scrubbing agents, and synthetic resin scrubbing agents.

[0018] [8] In addition to the components (A), (B), (C), (D), (E), and (F) described above, the present invention includes a component (G) different from component (A); a scrubbing agent, in an amount of 10% by mass or less relative to the total mass of the massage cosmetic, The massage cosmetic described in [6] above is characterized in that the component (G): scrubbing agent is at least one scrubbing agent selected from the group consisting of naturally derived scrubbing agents, divalent metal salt soap scrubbing agents, and synthetic resin scrubbing agents.

[0019] [9] The present invention provides a method for manufacturing a massage cosmetic according to any one of the above [1] to [8], characterized in that the soap base is manufactured by a mechanical kneading method in which the soap base is kneaded using an extruder.

[0020]

[10] The present invention provides a method for producing a massage cosmetic as described in [9] above, characterized in that the soap base includes columnar particles produced by passing it through a screen mesh during kneading with an extruder, and the columnar particles are produced by crushing and cutting a rod-shaped soap base having a thickness of 0.2 mm or more and less than 0.9 mm to a length of 3 mm or less. [Effects of the Invention]

[0021] The massage cosmetic according to the present invention achieves elimination of skin puffiness and lifting by promoting blood circulation and relaxing muscles through massaging by rubbing the cosmetic onto the skin with hands or the like, due to the scrub effect of a soap base composed of an alkali salt of a fatty acid such as a sodium salt of a fatty acid or a potassium salt of a fatty acid. Furthermore, since the soap base composed of an alkali salt of a fatty acid is water-soluble, the cosmetic provides a refreshed feel due to the function of washing away excess wax by the foaming of the blended soap base during washing such as showering after massage, while enabling a moist skin feel to be obtained due to the emollient effect of the appropriately remaining oil content.

[0022] Furthermore, the massage cosmetic according to the present invention can be provided as an environmentally friendly massage cosmetic, since the soap base serving as the main scrub ingredient has excellent biodegradability and thus imposes a low burden on the environment.

[0023] In addition, in the method for producing a massage cosmetic according to the present invention, columnar particles of a soap base used as a scrub agent are produced by a "mechanical milling" production method using an extruder equipped with a screen mesh, so that columnar soap particles having an optimal shape and size for enhancing the massage effect can be produced efficiently with stable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] [Figure 1] It is a diagram showing the appearance of the massage cosmetic according to an embodiment of the present invention. [Figure 2] It is a diagram schematically showing any one of a circular shape, an elliptical shape, and a polygonal shape as a cross-section of soap base particles contained in a massage cosmetic according to an embodiment of the present invention. [Figure 3] It is a diagram showing an example of the production process of a soap base by "mechanical milling" as a process flow chart. MODE FOR CARRYING OUT THE INVENTION

[0025] Embodiments of the present invention will be described below. It goes without saying that the present invention is not limited to these embodiments.

[0026] The massage cosmetic according to the embodiment of the present invention is an oil used in a massage balm formulation to enhance the emollient effect, which is to prevent moisture evaporation from the skin, maintain moisture, and soften the skin, and is basically a cosmetic that does not contain water. However, as will be described later, the massage cosmetic may contain an emulsifying surfactant as one of its components, which emulsifies trace amounts of water contained by natural moisturizing ingredients, etc., for the purpose of improving the stability of the components in the cosmetic balm formulation. In that case, a small amount of water is inevitably contained in the massage cosmetic, but in the embodiment of the present invention, the water content of the massage cosmetic may be 3% by mass or less of the total amount of components for the following reasons. If the water content of the massage cosmetic exceeds 3% by mass, not only will the emollient effect not be sufficiently obtained, but as will be described later, it will also adversely affect the water-soluble soap base that functions as a scrubbing agent. This is because even a small amount of water promotes partial dissolution or disintegration of the columnar particles of the water-soluble soap base, and changes in the shape and particle size of the columnar particles become significant. In that case, even if the soap base particles are applied as a scrubbing agent, the scrubbing function will decrease, and a high massage effect will not be obtained.

[0027] The water content of massage cosmetics is measured by either the heat-drying method, which involves measuring the weight loss of water due to evaporation using a balance or differential thermal balance (TG), or by the Karl Fischer method (volumetric titration), which utilizes the principle of quantitative reaction between water and iodine and sulfur dioxide. The former method is usually used because it is simpler, while the latter method is used when measurement is difficult with the heat-drying method.

[0028] The massage cosmetic according to an embodiment of the present invention contains a soap base made of an alkali metal salt of a fatty acid as an ingredient that functions as a scrubbing agent, in order to obtain a high massage effect. Since these soap bases are water-soluble, they generally do not dissolve or miscible in oily massage cosmetics. Therefore, an oily massage cosmetic is produced by molding the soap base into columnar particles and mixing it with other ingredients in the form of granules containing the molded columnar particles. Figure 1 shows the appearance of the massage cosmetic according to an embodiment of the present invention. The massage cosmetic shown in Figure 1 is entirely milky white and opaque, and overlapping portions of the columnar particles of the soap base are also observed, making it difficult to distinguish individual columnar particles. However, the white soap base is observed as particles 1 dispersed in an immiscible state while maintaining the same shape and size (diameter and length) as the columnar particles contained in the granules. The columnar particles thus formed in a dispersed state in the massage cosmetic are used as a scrubbing agent that provides a high massage effect.

[0029] Furthermore, since the dispersed particles of the soap base are water-soluble, a moderate cleansing effect can be obtained when washing away oils such as wax that remain on the skin with a shower after using it for massage.

[0030] Furthermore, the soap base that is washed away and dissolved by the shower water is mostly broken down into water and carbon dioxide in a short period of time.

[0031] Thus, the water-soluble soap base particles contained in oil-based massage cosmetics not only possess both the function of a scrub agent that provides a high massage effect and the function of a cleanser when washing away oil, but they are also highly biodegradable, making them an environmentally friendly ingredient.

[0032] In contrast, metal soaps and synthetic resins made from divalent metal salts, which have traditionally been used as scrubbing agents, are poorly soluble or insoluble in water, and therefore do not function as oil-removing detergents, and are also inferior in terms of biodegradability. Furthermore, although many naturally derived scrubbing agents such as sugars, salts, plant seeds / waxes, pigments, or cellulose fibers are biodegradable, it is difficult to find materials that have the desired scrubbing effect, and it is also difficult to expect them to function as detergents for washing away oil.

[0033] Unlike the various conventional scrubbing agents mentioned above, this invention focuses on the action and effect of making water-soluble soap base particles function not only as a scrubbing agent but also as an oil-based cleansing agent in oily massage cosmetics, and is based on the unique technical concept of this invention.

[0034] The effect of scrub particles on the skin varies greatly depending on their shape and size (particle size). For example, fine particles gently exfoliate the skin's surface, effectively removing dead skin cells and dirt from pores. On the other hand, coarser particles have a stronger cleansing power and are useful for removing stubborn dirt and dead skin cells, but they can be harsher on the skin.

[0035] The massage cosmetic according to the embodiment of the present invention contains a water-soluble soap base that functions as a scrubbing agent in the form of columnar particles. As will be described later, the present invention employs a mechanical kneading method as the method for producing the soap base. In this method, in order to make the soap base fine, it is passed through a screen mesh having a desired opening diameter using an extruder to form an elongated rod shape, and then columnar particles are produced by crushing and cutting. Therefore, in the massage cosmetic according to the embodiment of the present invention, in order to achieve both a high massage effect and a reduction in the burden on the skin due to abrasion, the shape and size of the columnar particles are defined according to the properties and characteristics of the alkali salt, which is the raw material of the soap base. Here, the size of the columnar particles may be defined by the thickness (diameter or length of one side) and length.

[0036] <Shape and size of columnar particles in soap base> In the present invention, the shape of the cross-section in the short axis direction of the columnar particles of the soap base is not particularly limited and may be any one of a circle, an ellipse, or a polygon with three or more sides. The cross-section in the short axis direction is largely determined by the opening shape of the screen mesh, and one of a circle, ellipse, rectangle, or polygon with three or more sides is selected according to the opening shape. When a polygonal cross-sectional shape is selected among these, a square or a regular polygon with five or more sides is preferred because the screen mesh is easy to obtain and install, and the columnar particles can be efficiently manufactured by isotropic extrusion molding.

[0037] In this invention, the size of columnar particles is defined by two parameters: particle thickness (diameter) and length. Of these, the thickness (diameter) of the columnar particles cannot be uniformly defined because the shape of the cross-section in the direction of the short axis is either a circle, an ellipse, or a polygon. Therefore, it is defined as follows, depending on the shape of the cross-section in the direction of the short axis.

[0038] Figure 2 shows schematic diagrams of examples of the cross-sectional shapes of columnar particles of the soap base used in the present invention, focusing on one each of (a) a circle, (b) an ellipse, and polygons such as (c) a quadrilateral (rectangle) and (d) a hexagon. Figure 2 schematically shows the state in which columnar particles 2, 3, 4, and 5 come into contact with the skin 6 during massage. As shown in Figure 2, the main behavior of columnar particles 2, 3, 4, and 5 during massage is to be aligned along the direction of the massage force (i.e., parallel to the surface of the skin 6) and to move while sliding in the direction of the long axis of each columnar particle. When considering the part in which the columnar particles directly come into contact with the skin 6, in the case of a quadrilateral cross-sectional shape, it is common to see the state shown in Figure 2(c), for example, and it is unlikely that the columnar particles would move with the diagonals of the quadrilateral aligned perpendicular or oblique to the skin 6. Furthermore, in the case of polygons with five or more sides in the cross-section, as the number of sides increases, the shape approaches a circle or ellipse and becomes similar to them. Therefore, as shown in Figure 2(d), in the case of polygons, the parameter that defines the diameter (thickness) of the columnar particles is not the length of one side that forms the cross-sectional shape, but the average length of the diagonals.

[0039] In the present invention, as shown in Figure 2, when selecting a circle, ellipse, triangle, quadrilateral, or polygon with five or more sides as the cross-section in the short axis direction, the parameters that specify each shape are defined as the diameter a1, major axis b1, length of the major side c1, and average length of the diagonals d1 for each shape.

[0040] The columnar particles of the soap base included in this invention have a diameter a1, major axis b1, length of the long side c1, and average length d1 of the diagonals that are in the range of 0.2 mm or more and less than 0.9 mm, preferably in the range of 0.2 to 0.6 mm, and more preferably in the range of 0.3 to 0.5 mm. If any of the diameter a1, major axis b1, length of the long side c1, and average length d1 of the diagonals is 0.9 mm or more, it will put a greater burden on the skin when used for massage, causing an unpleasant feeling and reducing the feel of the cosmetic product. On the other hand, if each dimension is less than 0.2 mm, the burden on the skin will be reduced and the unpleasant feeling during massage will be suppressed, but the massage effect will not be sufficiently obtained.

[0041] If a square is selected as the preferred shape for the cross-section along the minor axis, then both the long side a1 and the short side will have the same dimensions. Also, if a regular polygon with five or more sides is selected as the shape for the cross-section along the minor axis, then the diagonals d1 will all be the same.

[0042] On the other hand, the columnar particles of the soap base contained in the massage cosmetic according to the embodiment of the present invention have a length in the long axis direction of 3 mm or less. If the length exceeds 3 mm, the burden on the skin becomes significant when used for massage. Furthermore, the presence of columnar particles longer than 3 mm reduces the dispersibility of the soap base in the massage cosmetic. This reduction in dispersibility induces segregation of the columnar particles, and the formation of clumps formed by the aggregation of multiple particles becomes significant. This causes increased discomfort and burden on the skin during massage. Also, the minimum length in the long axis direction of the columnar particles does not need to be particularly limited; any length that results in an aspect ratio (= (length in the long axis direction) / (diameter in the short axis direction)) of 1 or more is acceptable.

[0043] In this invention, the columnar particles of the soap base may contain fine columnar particles having a cross-sectional diameter, major axis, length of the long side, or average length of the diagonal less than 0.2 mm, or a length in the major axis direction less than 0.2 mm. Even if these fine columnar particles are included, if their content is small, they will only have a minor effect on the massage effect. The effect of coarse particles is dominant on the massage effect. Therefore, if coarse particles having a cross-sectional diameter, major axis, length of the long side, or average length of the diagonal between 0.2 mm and 0.9 mm, and a length in the major axis direction between 0.2 and 3 mm are included in a high proportion of all columnar particles, the function as a scrub agent will be sufficiently achieved. On the other hand, fine particles are not the main component for obtaining a high massage effect, but they contribute to skin polishing and dirt removal in the same way as coarse particles, and also function as a cleansing agent for washing away oil.

[0044] In the present invention, the proportion of fine particles in the total columnar particles is 10% or less, preferably 5% or less, relative to the total amount of columnar particles. When columnar particles of soap base are produced by a mechanical kneading method as in the present invention, the proportion of fine particles in the total columnar particles becomes smaller.

[0045] <Ingredients contained in massage cosmetics> The massage cosmetic according to an embodiment of the present invention contains soap base in an amount of 10 to 30% by mass relative to the total mass of the massage cosmetic. The soap base is prepared as a massage cosmetic by mixing or kneading with other components using granules containing columnar particles as a raw material. Here, the soap base is included in the massage cosmetic as columnar particles dispersed in the massage cosmetic in a state of immiscibility with the other components.

[0046] Furthermore, the massage cosmetic composition according to the embodiment of the present invention may contain the soap base as component (A), component (B): liquid oil at room temperature, component (C): solid oil or solid higher alcohol at room temperature, component (D): emulsifying surfactant, and component (E): cleansing surfactant. Additionally, component (F): oily solvent may be included as needed, and further, component (G): another scrubbing agent different from component (A) may be included.

[0047] The following describes each of the above components (A), (B), (C), (D), (E), (F), and (G).

[0048] In this invention, a numerical range defined using the symbol "~" includes the numbers at both ends (upper and lower limits) of "~". For example, "3~6" represents a range of 3 to 6. Furthermore, if there are multiple numerical ranges defined in steps, each number can form a numerical range in any combination. For example, if it is stated as "2~10, preferably 4~8", the numerical ranges "2~4", "2~8", "4~10", and "8~10" can be formed.

[0049] <Ingredients (A): Soap base> Component (A) used in the present invention is a soap base commonly used in machine-made soaps, and is an anionic surfactant represented by sodium fatty acid (Na) or potassium fatty acid (K). Typical long-chain fatty acids include C12 (lauric acid), C14 (myristic acid), C16 (palmitic acid), C18 (stearic acid), and C18f1 (oleic acid). Generally, soap bases are composed of these long-chain fatty acids alone or in mixtures thereof, along with salts such as sodium or potassium. Here, the fatty acid may be a mixture of long-chain fatty acids and various organic acids with lower molecular weights. In the present invention, potassium fatty acid is preferred because it is readily soluble in water and has low irritancy.

[0050] The component (A) in the solid body massage cosmetic of the present invention is 10 to 30% by mass, preferably 17 to 27% by mass, based on the total mass of the massage cosmetic. If the content of component (A) is less than 10% by mass, the scrubbing sensation during massage will be insufficient and the massage effect will be reduced. On the other hand, if the content of component (A) exceeds 30% by mass, the solidification of the product will be accelerated, making the whole product too hard and difficult to pick up when using it.

[0051] <Component (B): Room temperature liquid oil> The component (B) used in this invention is an oil used in massage balm formulations. The inclusion of oil reduces friction on the skin and improves glide, making massage easier. Furthermore, the oil used should preferably be a liquid oil that is easily absorbed by the skin, has high moisturizing properties, and is effective in combating dry skin.

[0052] The room-temperature liquid oils used are liquid at room temperature (5-35°C), and typical examples include natural triglycerides such as olive oil, jojoba oil, corn oil, and soybean oil, hydrocarbon oils such as squalane and liquid paraffin, as well as ester oils such as ethylhexyl palmitate and diisostearyl malate, and various essential oils.

[0053] The content of component (B) in the body massage cosmetic of the present invention is 35 to 65% by mass, preferably 52 to 60% by mass, based on the total mass of the massage cosmetic. If the content of component (B) is less than 35% by mass, the skin glide during massage may be insufficient, and the massage effect may be reduced. On the other hand, if the content of component (B) exceeds 65% by mass, the hardness of the product will decrease, and separation phenomena such as oil separation may occur in stability tests.

[0054] <Ingredients (C): Room temperature solid oil> Component (C) used in this invention is an oil that contributes to product stability and solidifies at room temperature (5-35°C). If the massage oil formulation is composed solely of the liquid oil component (B) at room temperature, it will not only result in a massage balm with low hardness, but will also easily cause problems with product stability, such as oil separation and scrubbing agent sedimentation. Therefore, it is desirable to include a solid oil component that has a suitable melting point above room temperature and solidifies at room temperature.

[0055] Examples of room-temperature solid oils used include higher alcohols such as behenyl alcohol, waxes such as beeswax, hydrogenated palm oil and other natural oils hardened by hydrogenation, and natural plant waxes such as shea butter and cocoa butter.

[0056] The content of component (C) in the massage cosmetic of the present invention is 3 to 10% by mass, preferably 4 to 6% by mass, relative to the total mass of the massage cosmetic. If the content of component (C) is less than 3% by mass, the product hardness decreases and stability deteriorates, such as separation of oil. On the other hand, if the content of component (C) exceeds 10% by mass, the hardness of the product increases, resulting in poor skin compatibility during use and poor skin glide during massage.

[0057] <Ingredient (D): Emulsifying surfactant> The component (D) used in this invention is a component that contributes to the stability of the product. Although water is not added to the massage cosmetic product in principle, it is added to emulsify the trace amounts of water contained in the product, such as natural moisturizing ingredients, and to enhance the stability in the balm formulation.

[0058] Examples of emulsifying surfactants used include esters such as glyceryl stearate and PEG-60 hydrogenated castor oil, and ethers such as laureth-50.

[0059] The content of component (D) in the solid body massage cosmetic of the present invention is 0.3 to 3.0% by mass, preferably 0.5 to 1.5% by mass, relative to the total mass of the massage cosmetic. If the content of component (D) is less than 0.3% by mass, the product stability of the massage cosmetic deteriorates significantly. On the other hand, even if the content of component (D) exceeds 3.0% by mass, it does not contribute much to improving product stability.

[0060] <Ingredient (E): Cleansing surfactant> A key feature of this invention is that it enhances the massage effect based on the scrubbing function of component (A), while simultaneously providing a cleansing effect during body washing after massage. Among these effects, component (E): a cleansing surfactant is used to assist in the cleansing effect. Component (E) is added to assist in the cleansing of oils (especially solid waxes) that cannot be sufficiently removed by the cleansing power of soap alone.

[0061] Examples of anionic surfactants that can be used include sodium lauryl sulfate, sodium olefin (C14-16) sulfonate, and sodium cocoyl methyl taurate. Amphoteric surfactants such as cocamidopropyl betaine may also be used.

[0062] The content of component (E) in the solid body massage cosmetic of the present invention is 5 to 10% by mass, preferably 7 to 10% by mass, relative to the total mass of the massage cosmetic. If the content of component (E) is less than 5% by mass, almost no cleansing effect is obtained during body washing. On the other hand, if the content of component (E) exceeds 10% by mass, the hardness of the product decreases significantly, leading to a decrease in the massage effect.

[0063] <Component (F): Oily solvent> Component (F) included in the solid body massage cosmetic of the present invention is added to improve the miscibility of components (B) and (C) and enhance the stability of the product.

[0064] Examples of oily solvents used include propanediol, polyethylene glycol such as PEG-4 to PEG-12, ester oils such as caprylic / capric triglyceride, cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, and diethylhexyl sebacate.

[0065] The content of component (F) is 4% by mass or less, preferably 0.5 to 4% by mass, and more preferably 1 to 2% by mass, relative to the total mass of the massage cosmetic containing the above-mentioned components (A), (B), (C), (D), and (E). If the content of component (F) exceeds 4% by mass, the hardness of the product decreases significantly, and the massage effect is greatly reduced.

[0066] <Ingredients (G): Other scrubbing ingredients> The massage cosmetic composition according to the embodiment of the present invention is characterized by a scrubbing function due to component (A) above, but there are various other scrubbing agents besides component (A) that have different textures. In addition to component (A) which has a scrubbing function, the massage cosmetic composition according to the embodiment of the present invention may also contain another scrubbing agent as component (G) to obtain a desired texture during massage.

[0067] Ingredient (G): Other scrubbing ingredients include, for example, hard substances made from crushed fruit kernels, soft substances derived from starches such as mannan and potatoes, naturally derived scrubbing agents such as cellulose acetate, metal soaps such as calcium, magnesium, and zinc salts of fatty acids that do not have cleansing properties, and synthetic resins whose hardness is changed by altering the degree of polymerization of the composition, such as polyethylene beads. Each of these scrubbing agents exhibits a different scrubbing effect, but all are insoluble in water, which is a major difference from ingredient (A). These scrubbing agents can be used as an auxiliary to the scrubbing agent in ingredient (A) to adjust the strength of the scrubbing sensation.

[0068] The content of component (G) in the solid body massage cosmetic of the present invention is 10% by mass or less, preferably 2 to 10% by mass, relative to the total mass of the massage cosmetic containing the above components (A), (B), (C), (D), (E), and (G), or relative to the total mass of the total amount of the massage cosmetic containing the above components (A), (B), (C), (D), (E), (F), and (G). If the content of component (G) exceeds 10% by mass, the hardness of the product increases significantly, leading to a substantial decrease in the massage feel.

[0069] <Other ingredients> In addition to components (A) to (G) of the present invention, other common additives used in cosmetics may be included as other components.

[0070] Other ingredients include, for example, humectants such as glycerin, gelling agents, post-use enhancers (e.g., lactic acid, apple, natural extracts derived from plants and animals), disinfectants, preservatives, colorants, fragrances, pigments, etc.

[0071] <Method for producing columnar particles of soap base> Figure 3 shows the method for producing the columnar particles of the soap base used in this invention. The columnar particles of soap base are manufactured using a "mechanical kneading" method, which offers excellent productivity and improves product quality. Figure 3 shows an example of the manufacturing process for columnar particles of soap base using the "mechanical kneading" method, as a process flowchart of steps S1 to S7. Figure 3 also shows specific examples of the equipment used in each step.

[0072] As shown in Figure 3, first, a soap base consisting of pre-adjusted alkali salts of fatty acids is put into a container (hopper) (step S1 in the figure), and after the other ingredients (e.g., pigments and fragrances) are added (step S2), it is mixed using a mixer or the like in the mixing step (step S3). Subsequently, the process proceeds to the kneading step, where each ingredient is kneaded (step S4). Furthermore, in the tight kneading step by vacuum extrusion, the mixture is thoroughly kneaded using a vacuum extruder or the like so that the mixture of each ingredient is uniform (step S5). In the vacuum extrusion step of S5, the kneaded soap base is extruded into a long, slender rod shape by passing it through a screen mesh having a mesh opening that is in the range of 0.2 mm or more and less than 0.9 mm, where the diameter a1, major axis b1, length of the long side c1, and average length d1 of the diagonals shown in Figure 2 are within that range. The extruded rod-shaped soap base is formed to any length of 3 mm or less using, for example, a crushing and cutting machine that has both crushing and cutting functions (step S6). This yields granules of columnar particles of soap base having a cross-section with a desired shape and diameter in the short axis direction and a desired length in the long axis direction. Subsequently, the granules containing the columnar particles of soap base are collected (step S7) and used as raw materials when manufacturing massage cosmetics. The columnar particles contained in the soap base granules are subject to quality checks of their shape and size (diameter or side length) by sampling inspection or other means as needed.

[0073] The method for producing the columnar particles of the soap base used in this invention is not limited to the steps shown in the example manufacturing process flowchart in Figure 3. For example, if a large amount of volatile components such as moisture remain in the soap base, a drying step may be added in the middle of the process. Also, the kneading steps S4 and S5 may be performed consecutively. Furthermore, in order to simplify the manufacturing process, the close kneading step in S5 may be performed using a conventional extruder instead of a vacuum extruder.

[0074] <Method for manufacturing massage cosmetics> A massage cosmetic according to an embodiment of the present invention can be prepared, for example, as follows.

[0075] Each of the above components (A) to (G) is blended in the desired amount relative to the total mass of the massage cosmetic, and then heated and dissolved. The heating temperature should be selected within the range of 50 to 150°C, such that no volatilization or degradation of each component occurs. After that, it is cooled to a temperature lower than the heating temperature (for example, 40°C or lower), filled into the desired container, and then left at room temperature for a predetermined time to obtain a solid massage cosmetic. Alternatively, the massage cosmetic may be obtained in a creamy, semi-solid state by adjusting the content of the above components (B), (C), and (F). The container should be covered with a lid or stopper as necessary.

[0076] Alternatively, the method described below may be used as another method for preparing massage cosmetics. (1) The above ingredients (B) to (E) are blended in the desired amount relative to the total mass of the massage cosmetic, and then heated and dissolved. If necessary, ingredient (F) is added. (2) Add granules containing columnar particles of soap base to each of the heated and melted components (B) to (E), and optionally (F), as component (A), in a desired amount relative to the total mass of the massage cosmetic, and mix uniformly with each of the components (B) to (E) or (B) to (F). If necessary, component (G) may be added together with component (A). (3) After uniformly mixing each component, remove air bubbles, pour into the desired container, and cool.

[0077] Even in massage cosmetics prepared in this manner, if necessary, quality checks may be performed on the shape and size (diameter and length) of the columnar soap base particles contained in the massage cosmetic by sampling inspection or other means. For a simple inspection of the shape and size of the columnar soap base particles, for example, the massage cosmetic itself, or a portion of the massage cosmetic taken out and spread on a plastic film, can be observed using a stereomicroscope or the like. Alternatively, the massage cosmetic may be dissolved in a solvent that does not dissolve it, such as a nearly nonpolar solvent such as dimethoxyethane, tetrahydrofuran, or hexane; a poorly soluble solvent such as isopropanol; silicone oil; mineral oil; or vegetable oil; and then only the columnar soap base particles that remain undissolved can be separated and examined using a stereomicroscope or electron microscope. [Examples]

[0078] The present invention will be described in more detail below with reference to examples and comparative examples. However, the present invention is not limited to the examples described below.

[0079] [Examples 1-5, Comparative Examples 1-2] In Examples 1-5 and Comparative Examples 1-2, the range of applicable thickness (diameter of the cross-section in the short axis direction or length of one side) for columnar particles of soap base that have a suitable feel when used as a scrubbing agent was investigated.

[0080] The following ingredients were used: • Ingredients (A): Potassium-containing soap base, product name "Pelican Soap Specification with NOF Corporation" (manufactured by NOF Corporation) • Ingredients (B): Corn oil, product name "Corn Salad Oil" (manufactured by Nippon Con Co., Ltd.) • Ingredients (C): Beeswax, Product name "Golden Brand Powder" (manufactured by Miki Chemical Industry Co., Ltd.) • Ingredient (D): Laureth-50, Product name "EMALEX 750" (manufactured by Nippon Emulsion Co., Ltd.) • Ingredients (E): Sodium olefin (C14-16) sulfonate, Product name: "K Liporan PJ-400CJ" (manufactured by Lion Specialty Chemicals Co., Ltd.) • Ingredients (F): Caprylic / Capric Triglyceride, Product Name: "M Fine Oil CCT-1" (Manufactured by Miyoshi Oil & Fat Co., Ltd.)

[0081] <Manufacturing of columnar particles for soap base> Using the above component (A), columnar particles of soap base with varying thicknesses were prepared by simulating the "mechanical kneading" method shown in Figure 3, using screen meshes with a square mesh opening shape and mesh opening sizes ranging from 20 to 80 mesh, divided into 10-mesh intervals.

[0082] First, ingredient (A) and fragrance were mixed and thoroughly mixed at room temperature. Then, the mixture was kneaded and extruded into a rod shape using a prototype mini-plodder equipped with a honeycomb-shaped screen mesh in a nozzle. At that time, the thickness of the soap base was changed by changing the type of screen mesh (different mesh sizes) installed inside the plotter. The rod-shaped soap base with the thickness adjusted in this way was cut to a length of 3 mm or less using a crushing and cutting machine to obtain soap base granules in which the soap base was contained as columnar particles.

[0083] <Manufacturing of scrub cosmetics> Using the obtained soap base granules, the raw materials for each component were mixed and stirred in a glass container at 70°C according to the mixing ratios listed in Table 1 below. After that, the mixture was cooled to 35°C, filled into jar containers, and stored at room temperature for 12 hours or more to solidify, thereby producing a massage cosmetic.

[0084] [Table 1]

[0085] Massage cosmetics prepared with the formulation ratios shown in Table 1 (Examples 1-5 and Comparative Examples 1-2) were evaluated using the following method.

[0086] <Evaluation Method> Ten women aged 22 to 39 served as panelists, and they evaluated the scrubbing sensation (skin feel, etc.) of the body massage cosmetic when used during actual bathing, according to the following criteria. (A) Texture against the skin 2 points: The massage effect is satisfying and the texture is pleasant on the skin. 1 point: The massage effect is somewhat weak on the skin. 0 points: I didn't feel any massage effect. (B) Criteria for evaluating skin feel ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0087] The evaluation results are shown in Table 2 below. In Table 2, "◎" and "〇" indicate a pass, "△" indicates a pass with caution, and "×" indicates a fail.

[0088] Furthermore, using a stereomicroscope, it was confirmed that the columnar particles of the soap base produced using screen meshes with mesh sizes of 20, 30, 40, 50, 60, 70, and 80 mesh each had a square cross-section in the short-axis direction, the thickness (length of one side of the cross-section in the short-axis direction) shown in Table 2 below, and a length in the long-axis direction of 3 mm or less.

[0089] Here, Comparative Examples 1 and 2 shown in Table 2 below are examples of massage cosmetics that received a "×" rating in the evaluation items and were therefore unsuccessful.

[0090] [Table 2]

[0091] As shown in Examples 1-5 of Table 2, by using a 30-70 mesh size for grinding the soap base and adjusting the diameter (thickness) of the columnar particles to between 0.2 mm and 0.9 mm (including measurement error), a moderate scrubbing sensation was obtained during use of the scrub cosmetic. Furthermore, it was found that using a 40-60 mesh size for grinding the soap base and adjusting the diameter (thickness) of the columnar particles to 0.3 mm-0.6 mm could further improve the scrubbing sensation.

[0092] [Examples 6-13, Comparative Examples 3-4] We focused particularly on the content of component (A) in the massage cosmetic according to the embodiments of the present invention and investigated the applicable range of its content. In Examples 6 to 13 and Comparative Examples 3 to 4, the investigation was conducted with component compositions that did not include other components such as moisturizers, fragrances, and post-use enhancers.

[0093] The raw materials used were (A), (B), (C), (D), (E), and (F) listed above, and the following was used as component (G). • Ingredients (G): Peach kernel, product name "PS Grit #60-80" (manufactured by Ichimaru Falcos Co., Ltd.)

[0094] <Manufacturing of columnar particles for soap base> Using the above component (A), columnar particles of soap base were produced in the same manner as in Example 3, simulating the "mechanical kneading" method shown in Figure 3. The screen mesh used had a square mesh opening shape and a mesh size of 50 mesh, the same as that used in Example 3.

[0095] <Method for preparing massage cosmetics> Massage cosmetics for Examples 6-13 and Comparative Examples 3-4 were obtained using the above-mentioned components (A)-(G) according to the mixing ratios shown in Table 3 below, in the same manner as for Examples 1-5 above. As component (A) shown in Table 3, as explained above, soap base granules containing columnar particles created using a 50-mesh screen were used. The obtained solid body massage cosmetics were evaluated using the following method.

[0096] <Evaluation Method> (1) Ease of removing from the jar container with fingers Ten women aged 22 to 39 served as panelists, and they evaluated the ease with which the bulk product could be dispensed from the container with their fingers when used as a body massage cosmetic during actual bathing, according to the following criteria. (A) Scoring criteria for each panelist 2 points: It can be easily removed from the jar container with your fingers and is easy to apply to the body. 1 point: It's a little difficult to get the product out of the jar with your fingers, and it's difficult to apply to the body. 0 points: Difficult to remove from the jar with fingers and cannot be applied to the body. (B) Criteria for evaluating ease of picking up with fingers ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0097] (2) Scrub sensation during use Ten women aged 22 to 39 served as panelists and evaluated the scrubbing sensation (friction on the skin, etc.) of the massage effect when using the body massage cosmetic during actual bathing, according to the following criteria. (A) Scoring criteria for each panelist Points 2: It gives a pleasant massage sensation on the skin. 1 point: The massage sensation is either a little too strong or a little too weak. 0 points: No massage effect on the skin. (B) Criteria for evaluating the scrubbing sensation during use ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0098] (3) Lathering when rinsing Ten women aged 22 to 39 served as panelists, and after using the body massage cosmetic during actual bathing, they evaluated the lathering ability when rinsing it off according to the following criteria. (A) Scoring criteria for each panelist 2 points: It lathered well and provided a satisfying cleansing experience. 1 point: It lathered up a bit, but the cleansing effect was insufficient. 0 points: I didn't feel any lathering, and there was no sense of cleansing. (B) Evaluation criteria for lathering during rinsing ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0099] (4) Moisturizing effect on the skin after use Ten women aged 22 to 39 served as panelists. After using the product as a body massage cosmetic during their actual bath, they washed off the product with a shower, and then evaluated the moisturizing effect on their skin 30 minutes after bathing according to the following criteria. (A) Scoring criteria for each panelist Points 2: After bathing, I feel my skin is thoroughly moisturized. 1 point: After bathing, I feel my skin is slightly more moisturized. 0 points: I don't feel any moisturizing effect on my skin after bathing. (B) Criteria for evaluating the moisturizing effect on the skin after use ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0100] (5) Overall evaluation Ten women aged 22 to 39 served as panelists, and after actually using the product, they evaluated whether they would be inclined to purchase it if it were commercialized as a body massage cosmetic, based on the following criteria. (A) Scoring criteria for each panelist 2 points: It can be highly regarded as a body massage cosmetic. 1 point: I would like to see more improvement as a body massage cosmetic. 0 points: Cannot be evaluated as a body massage cosmetic. (B) Overall evaluation criteria ◎: Total score of 18-20 points ○: Total score of 16-17 points △: Total score between 11 and 15 points ×: Total score is 10 points or less

[0101] The evaluation results are shown in Table 3 below. In Table 3, "◎" and "〇" indicate a pass, "△" indicates a pass with caution, and "×" indicates a fail. Here, Comparative Examples 3 and 4 shown in Table 3 below are examples of massage cosmetics that received an overall evaluation of "×" and were therefore unsuccessful.

[0102] [Table 3]

[0103] As can be seen from the evaluation results in Table 3, the ease with which the massage cosmetic can be dispensed by fingers is affected by the amount of ingredient A: potassium-containing soap base. When the amount of ingredient A in the massage cosmetic was low, it became softer (Comparative Example 3), and conversely, when it was high, it became hard (Comparative Example 4). In addition, the amount of ingredient (A) greatly affected the scrubbing sensation during use of the massage cosmetic. When the amount of ingredient (A) was low, the scrubbing sensation decreased, and when the amount of ingredient (A) was less than 10% by mass, the massage effect on the skin was significantly reduced (Comparative Example 3). On the other hand, when the amount of ingredient (A) was 30% by mass or more, although some scrubbing sensation could be obtained, the massage cosmetic became hard, and there was a limit to the improvement of the massage effect (see Example 13 and Comparative Example 4). In particular, Comparative Example 4, in which the amount of ingredient (A) exceeded 30% by mass, became extremely hard and could not be used as a massage cosmetic.

[0104] The amount of foam produced during rinsing decreased as the amount of ingredient (A) decreased, and when the amount of ingredient (A) was less than 10% by mass, evaluators commented that there was insufficient foaming. As shown in Table 3, Examples 7-13 had acceptable levels of foaming during rinsing. Although Example 6 had slightly less foaming during rinsing compared to Examples 7-13, it was confirmed to be at an acceptable level in terms of product quality.

[0105] Furthermore, the moisturizing effect after use tended to decrease when the content of component (A) was 30% by mass or higher. In particular, Comparative Example 4 had a higher content of component (A) than Example 13, resulting in an even greater decrease in moisturizing effect after use, and many evaluators commented that the potassium-containing soap removed too much oil. On the other hand, no significant difference was observed when the content of component (A) was less than 30% by mass.

[0106] Thus, based on the overall evaluation results shown in Table 3, Examples 6-13 met the passing or near-passing levels in terms of hardness, scrubbing sensation, lathering during rinsing, and moisturizing effect after use, by adjusting the content of component (A) within the range of 10-30% by mass. Therefore, they received high scores in the overall evaluation, and a high level of purchase intent was confirmed as a massage cosmetic with appropriate properties and excellent effects if commercialized.

[0107] Furthermore, the lathering effect during rinsing and the moisturizing effect after use are influenced not only by ingredient (A) but also by ingredients (B) to (E). Therefore, it is preferable to optimize the content of ingredients (B), (C), (D), and (E) within the ranges shown below. Component (B): Room temperature liquid oil 35~65% by mass Ingredients (C): Room temperature solid oil or room temperature solid higher alcohol 3-10% by mass Ingredients (D): Emulsifying surfactant 0.3-3% by mass Ingredients (E): Cleansing surfactant 5-10% by mass

[0108] Furthermore, the stability of the massage cosmetic is improved by the inclusion of ingredient (E), and the hardness and scrubbing sensation of the massage cosmetic are also affected by the inclusion of ingredient (G). Therefore, it is preferable to optimize the content of ingredients (F) and (G) within the ranges shown below. Ingredients (F): Oily solvent 4% by mass or less Ingredient (G): Other scrubbing agents different from ingredient (A) (10% by mass or less)

[0109] As described above, in the massage cosmetic according to the embodiment of the present invention, the soap base, which consists of an alkali salt of a fatty acid such as a sodium salt or potassium salt of a fatty acid, is water-soluble and therefore dispersed as columnar particles in an immiscible state with other components. Due to the scrubbing effect of these columnar particles of the soap base, when the massage cosmetic is rubbed onto the skin with the hands or other means to perform a massage, an appropriate firmness and scrubbing sensation can be felt. Furthermore, the cleansing effect of excess wax due to the lathering of the blended soap base and the emollient effect of the moderately remaining oil create good lathering when rinsing and a moderate moist feeling after use.

[0110] Furthermore, because the soap base, which is the main component of the scrub, has excellent biodegradability, it has a low environmental impact, making it possible to provide an environmentally friendly massage cosmetic.

[0111] Furthermore, the method for producing massage cosmetics according to the present invention involves manufacturing columnar soap base particles, which are used as a scrubbing agent, using a "mechanical kneading" method with an extruder equipped with a screen mesh. This makes it possible to efficiently and consistently produce columnar soap particles with the optimal shape and size for enhancing the massage effect.

[0112] The technical aspects of each embodiment, including the modified examples, may be combined and applied to other embodiments to form examples. [Explanation of Symbols]

[0113] 1. Particles dispersed in a non-miscible state in a massage cosmetic. 2,3,4,5 Columnar particles of soap base 6 Skin

Claims

1. A massage cosmetic containing a soap base made of an alkali salt of a fatty acid, wherein the water content is 3% by mass or less of the total amount of ingredients, A massage cosmetic characterized in that the soap base is contained in the massage cosmetic as columnar particles dispersed in a state incompatible with other components.

2. The massage cosmetic according to claim 1, wherein the columnar particles of the soap base dispersed in the massage cosmetic have a cross-section in the short axis direction that is one of the shapes selected from the group consisting of circles, ellipses, and polygons, and the diameter of the circle, the major axis of the ellipse, and the length of one side of a triangle or quadrilateral in the polygon, or the average length of the diagonals of a pentagon or more, are each 0.2 mm or more and less than 0.9 mm.

3. The massage cosmetic according to claim 2, characterized in that the columnar particles of the soap base dispersed in the massage cosmetic have a length in the longitudinal direction of 3 mm or less.

4. The massage cosmetic according to any one of 1 to 3, characterized in that the soap base is contained in an amount of 10 to 30% by mass relative to the total mass of the massage cosmetic.

5. The soap base is component (A), and component (B): liquid oil at room temperature, component (C): solid oil or solid higher alcohol at room temperature, component (D): emulsifying surfactant, and component (E): cleansing surfactant are added to the massage cosmetic in the following amounts relative to the total mass, i.e., Ingredient (A): The soap base, 10-30% by mass Component (B): Room temperature liquid oil 35-65% by mass Ingredients (C): Room temperature solid oil or room temperature solid higher alcohol 3-10% by mass Ingredient (D): Emulsifying surfactant 0.3-3% by mass Ingredient (E): Cleansing surfactant 5-10% by mass A massage cosmetic according to claim 4, comprising:

6. The massage cosmetic according to claim 5, further comprising, in addition to the aforementioned components (A), (B), (C), (D), and (E), component (F): oily solvent in an amount of 4% by mass or less relative to the total mass of the massage cosmetic.

7. In addition to the aforementioned components (A), (B), (C), (D), and (E), the massage cosmetic contains a component (G) different from component (A); a scrubbing agent, in an amount of 10% by mass or less relative to the total mass of the massage cosmetic. The massage cosmetic according to claim 5, characterized in that the aforementioned component (G): scrubbing agent is at least one scrubbing agent selected from the group consisting of naturally derived scrubbing agents, divalent metal salt soap scrubbing agents, and synthetic resin scrubbing agents.

8. In addition to the aforementioned components (A), (B), (C), (D), (E), and (F), the massage cosmetic contains a component (G) different from component (A); a scrubbing agent, in an amount of 10% by mass or less relative to the total mass of the massage cosmetic. The massage cosmetic according to claim 6, characterized in that the aforementioned component (G): scrubbing agent is at least one scrubbing agent selected from the group consisting of naturally derived scrubbing agents, divalent metal salt soap scrubbing agents, and synthetic resin scrubbing agents.

9. A method for producing a massage cosmetic according to any one of claims 1 to 3, A method for producing a massage cosmetic, characterized in that the soap base is produced by a mechanical kneading method using an extruder.

10. The soap base contains columnar particles produced by passing through a screen mesh during kneading by the extruder, and The method for producing a massage cosmetic according to claim 9, characterized in that the columnar particles are produced by crushing and cutting a rod-shaped soap base having a thickness of 0.2 mm or more and less than 0.9 mm to a length of 3 mm or less.

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