JP2021504406A - Skin cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quick and simple skin washing method. SOLUTION: (a) A step of mixing a composition containing water, a carbonate and / or a hydrogen carbonate and an acid in a container to obtain a mixed solution, wherein (i) the carbonate and the carbonate in the container and The mass ratio [(i) / (ii)] of the total content of hydrogen carbonate to (ii) water is 0.005 or more and 0.05 or less, and the ratio of water to the internal volume of the container is 0.3 or more and 0. .9 or less; (b) the step of closing the container containing the mixed solution; (c) the step of supersaturating carbonate in the container; and (d) releasing the mixed solution from the container to the skin A skin cleaning method, which has steps to apply to.

Description

The present invention relates to a simple and quick method of cleaning the skin.

Traditionally, bathing and showering have been widely used as a means of cleaning and relaxing the skin. For example, bath salts containing an extract of Umbelliferae senkyu and / or an extract of Asteraceae chamomile and an extract of Labiatae menta and / or an extract of Labiatae mannenro accelerate the effects of overloaded stress. A technique for removing umbelliferae and refreshing the mind and body is known (Patent Document 1).

On the other hand, when bathing, a carbon dioxide gas generating bath agent having a blood circulation promoting effect is used, and a relaxing effect, a refreshing effect, a fatigue recovery effect and the like are obtained (Patent Document 2). Further, as a cleaning technique using carbon dioxide gas, a technique for cleaning a local part such as the head or buttocks such as the scalp with a specific cleaning device is also known (Patent Document 3).

Japanese Unexamined Patent Publication No. 2005-29536 Japanese Unexamined Patent Publication No. 11-47221 Japanese Unexamined Patent Publication No. 2003-93262

The present invention
(A) A step of mixing a composition containing water with carbonate and / or bicarbonate and acid in a container to obtain a mixed solution, wherein (i) carbonate and bicarbonate in the container. The mass ratio of (ii) to water [(i) / (ii)] is 0.005 or more and 0.05 or less, and the ratio of water to the internal volume of the container is 0.7 or more and 0.9 or less;
(B) The step of closing the container containing the mixed solution;
(C) The step of supersaturating carbon dioxide in the container; and (d) the step of releasing the mixed solution from the container and applying it to the skin.
With respect to a skin cleansing method.

It is the schematic of the container in this invention. It is the schematic of the cap in this invention. It is a figure which shows the step (a). It is a figure which shows the step (c). It is a figure which shows the step (d). The sachet containing the composition (powder) inside is shown. An internal strainer that can be coupled inside the container is shown. The state of the immersion tube when the container is turned upside down is shown. It is a figure which shows the diameter and appearance of the spout of a cap, and the injection result of a mixed solution.

Due to different cultures and climates, skin cleansing and relaxing methods vary from country to country. For example, Japanese people like to take a bath or shower, but people in Southeast Asia prefer to take a bucket of water or a shower.

Detailed description of the invention

However, in recent years, an increasing number of people are busy and get up early in the morning to work late at night and enjoy hobbies and social activities until late at night. On the other hand, when washing the skin thoroughly by taking a bath or shower, it takes several tens of minutes including washing away the cleaning agent, drying, and soothing sweating. As described above, for busy people these days, a simple and quick means of skin washing and refreshing is desired instead of bathing and showering. A bath in the body may satisfy the desire to cleanse and refresh the skin in less time, but that method does not completely cleanse the skin and lasts a long, refreshing sensation. do not do.

In addition, conventional cleaning techniques using carbon dioxide are designed for local applications, but their structures are complex and require water supply equipment. Therefore, it cannot be a simple and quick skin cleansing or refreshing means, and a new cleansing method replacing the conventional method has been desired.

Therefore, the present invention is to provide a new method for simply cleaning the skin simply and quickly and without location restrictions (eg, inside or outside a building).
The present inventor has focused on a container containing water and a carbon dioxide generator containing a carbonate or a bicarbonate or an acid. The present inventor can quickly and easily body by mixing water in a container with a carbon dioxide generating agent, closing the container to generate supersaturated carbon dioxide in the container, and then injecting carbonated water from the container. It was found that washing with carbonated water, promotion of blood circulation and refreshment are possible.

According to the method of the present invention, an aqueous carbon dioxide-containing mixed solution is quickly and easily sprayed onto the skin to impart a cleansing effect, a refreshing effect, and the like.

The present invention includes the following steps (a), (b), (c) and (d).
(A) A step of mixing a composition containing water with carbonate and / or bicarbonate and acid in a container to obtain a mixed solution, wherein (i) carbonate and bicarbonate in the container. The mass ratio of (ii) to water [(i) / (ii)] is 0.005 or more and 0.05 or less, and the ratio of water to the internal volume of the container is 0.7 or more and 0.9 or less;
(B) The step of closing the container containing the mixed solution;
(C) The step of supersaturating carbon dioxide in the container; and (d) the step of releasing the mixed solution from the container and applying it to the skin.

Each step will be described below.

The skin cleansing method of the present invention comprises a container with a sealable cap, water, and a composition comprising carbonate and / or bicarbonate and acid (also referred to as a carbon dioxide generator). In the present invention, the skin is the whole body, or the scalp, face, neck, shoulders, chest, abdomen, waist, back, hips, hands, palms, arms, elbows, legs, knees, feet, toes, soles, heels, etc. Can include parts of the body that contain. Among them, the skin washing method of the present invention is preferably a body washing method.

The container is not particularly limited as long as it can contain a liquid such as water. The container may be a bottle, a jug, a jar, a tube or the like. The container is preferably pressure resistant. As the water, not only tap water but also deionized water and mineral water can be used. The container may be made of resin, glass, metal, or the like. The material of the container is preferably made of resin because it is lightweight, easily available, and easy to manufacture. Polyethylene-based bottles are more preferable, and for example, polyethylene terephthalate (PET) bottles as shown in FIG. 1 are even more preferable.

The content of the container is not particularly limited, but from the viewpoint of usability and shower time, the capacity that can be filled with water is preferably 300 mL or more and 3 L or less, and more preferably 350 mL or more and 2 L or less.

The size of the container can be changed according to the application and is not absolute. When the size of the container is 400 mL or more and 600 mL or less, the body diameter is preferably 50 to 135 mm, preferably 55 to 115 mm, and even more preferably 60 to 85 mm from the same viewpoint. The height is preferably 200 to 320 mm, more preferably 200 to 270 mm, still more preferably 200 to 240 mm. In the present invention, the maximum internal diameter of the container is defined to be the largest internal diameter of the plurality of horizontal cross-sectional diameters of the container when the container is upright.

Since the skin cleaning method of the present invention can be handled so easily that a woman, a child, or an elderly person can easily grasp the container, there is no physical trouble. For example, for women and children, the internal volume is preferably 300 mL or more and 1 L or less from the viewpoint of improving usability.

Further, due to such an appropriate size, a sufficient amount of carbon dioxide is generated by sufficiently mixing the carbonate and / or the hydrogen carbonate and the acid with water. When the container is of such a size, continuous cleaning and refreshing effects can be enjoyed when the mixed solution comes out of the container at an appropriate pressure.

The cap of the container makes it possible to seal and release the mixed solution in the container from the point of sealing the mixed solution in step (b) and the point of discharging the mixed solution from the container through the cap in step (d). be able to. The cap may be capable of sealing and discharging the mixed solution, such as a push-pull cap, a flip-up cap or a screw cap. Further, the cap may be provided with a spout. In one aspect of the cap, there are inner and outer spouts, and the mixed solution is ejected from the spout through the inner spout. It is preferable that the cap is provided with a function of adjusting the spout diameter. For example, a cap whose spout diameter can be adjusted by a screw type is preferable.

From the viewpoint of releasing the mixed solution containing carbon dioxide from the container and continuously exhibiting the cleaning effect, the refreshing effect, and possibly the blood circulation promoting effect, that is, the carbon dioxide-containing aqueous solution in step (d) (hereinafter, the mixed solution). The carbon dioxide-containing aqueous solution) is preferably a cap provided with a dipping tube (FIG. 2). Further, the immersion tube is preferably long enough to reach the bottom of the container.

In the method of the present invention, according to step (a), carbonate and / or bicarbonate is neutralized by acid to generate carbon dioxide. At that time, since the container is closed by step (b), the generated carbon dioxide is partially dissolved in water and partially gaseous together with the air in the headspace (the part other than the mixed solution in the container). Is. The carbon dioxide gas generated in the headspace puts pressure on the mixed solution.

However, in step (d), such pressure is reduced and the mixed solution is instantaneously discharged out of the container. For the purpose of instantaneous release, one effective method is to turn the container upside down before releasing the mixed solution, and another method is to use a container with a dipping tube. By using these methods, carbon dioxide is released through the tube, so that the effects of the present invention can be enjoyed to some extent.

Next, a composition containing a carbonate and / or a hydrogen carbonate and an acid (a composition that is a carbon dioxide generator) will be described.

The carbonate and / or bicarbonate used in the present invention is a component that generates carbon dioxide by neutralization with an acid described later. The generated carbon dioxide is water-soluble and gives a cleansing effect and a refreshing feeling when applied to the skin. Carbon dioxide is expected to have a blood circulation promoting effect.

Examples of the carbonate and / or hydrogen carbonate include one or more selected from sodium carbonate, sodium hydrogen carbonate, magnesium carbonate, calcium carbonate, potassium carbonate and the like. Among them, one or more selected from sodium carbonate and sodium hydrogen carbonate are preferable from the viewpoint of imparting better foamability.

As the acid, an organic acid is preferable from the viewpoint of ensuring storage stability. Examples of the organic acid include succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidonecarboxylic acid, salicylic acid, maleic acid, phthalic acid, glutaric acid, oxalic acid and the like. Can be used in one or more types. Among them, for the same reason, one or more selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid and salicylic acid are preferable, and succinic acid, fumaric acid and malic acid are preferable. , One or more selected from adipic acid, tartaric acid and citric acid are more preferable, and one or more selected from succinic acid, malic acid and fumaric acid are further preferable.

The total content of carbonate and bicarbonate in the composition is preferably 5% by mass or more and 80% by mass or less from the viewpoint of enhancing the carbon dioxide generation effect, the cleaning effect, the refreshing effect, and the blood circulation promoting effect. More preferably, it is 10% by mass or more and 60% by mass or less.

For the same reason as described above, the acid content is preferably 10% by mass or more and 80% by mass or less, and more preferably 15% by mass or more and 60% by mass or less.

In the composition, water-insoluble / sparingly soluble powder, refreshing agent, ultraviolet absorber, conditioning agent, essential oil, fragrance, excipient, binder, disintegrant, animal and plant extract, antibacterial agent, pigment, fragrance , Oily components, additives such as surfactants can be contained.

In the skin cleansing method of the present invention, the skin can be washed by continuously applying the carbon dioxide-containing mixed aqueous solution for a while even without a surfactant or in a small amount. Therefore, one of the embodiments of the present invention is such that the content of the surfactant is 2% by mass or less, preferably 1% by mass or less, based on the entire composition. This means that one aspect of the invention includes a method that is substantially free of surfactants.

Examples of the water-insoluble or sparingly soluble powder include silicone powder, bentonite, potassium aluminum sulfate, zinc phenol sulfonate and the like. The content of the water-insoluble powder is preferably 0.01% or more and 5% or less, more preferably 0.1% or more and 2% or less, from the viewpoint of obtaining a refreshing feeling and smoothness of the skin after showering. More preferably, it is 2% or more and 1% or less.

Examples of the refreshing agent include menthol, camphor, monomentyl glyceryl ether, menthol lactate and the like. The content of the refreshing agent in the composition is, for example, preferably 0.01% or more and 5% or less, and more preferably 0.01% or more and 0.1% or less in terms of mass ratio from the viewpoint of obtaining a cooling effect.

Conditioning agents include polyhydric alcohols for the purpose of moisturizing, controlling skin scales, and stimulating the removal of accumulated skin-derived scales. Typical polyhydric alcohols include polyalkylene glycols, more preferably alkylene glycols and derivatives thereof, such as propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1 , 3-butylene glycol, 1,2,6-hexanetriol, glycerolethoxylate, glycerolpropoxylate and mixtures thereof.

Examples of the ultraviolet absorber include paraaminobenzoic acid, octyl p-methoxycinnamate (2-ethylhexyl p-methoxycinnamate), glycerylmono-2-ethylhexanoyldiparamethoxycinnamate, and silylisopentyltrimethoxycinnamate. Trisiloxane and other cinnamic acid-based UV absorbers, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 2- (2) '-Hydroxy-5'-methylphenylbenzotriazole, 4-methoxy-4'-t-butyldibenzoylmethane, 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one, bis- Examples thereof include ethylhexyloxyphenol-methoxyphenyltriazine, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] 1,3,5-triazine, dimorpholinopyridadinone and the like.

Essential oils include, for example, amber oil, bergamot, cedarwood, chamomile oil, cinnamon oil, citronella oil, cypress oil, eucalyptus oil, geranium oil, ginger oil, grapefruit oil, honey oil, jasmine oil, lavender oil, lemon oil, lime oil. , Lemongrass oil, neroli oil, perilla oil, rose oil, rosemary oil, sandalwood oil, tangerine oil, tea tree oil, thyme oil, ylang ylang oil and the like.

Examples of the fragrance include, but are not limited to, aldehydes, ketones, esters and the like, in addition to the essential oils.

Examples of excipients include water-soluble binders. When the acid is coated with a water-soluble binder, the reaction in the packaging container is suppressed during storage before use, while carbon dioxide can be effectively generated during use.

As the water-soluble binder, at least one selected from the group consisting of polyethylene glycol, polypropylene glycol, polyoxyethylene alkyl ether and polyoxyethylene phenol ether is preferable, and at least one selected from the group consisting of polyethylene glycol and polypropylene glycol is more preferable. preferable.

The number average molecular weight of the water-soluble binder is preferably 4,000 or more and 20,000 or less, preferably 6,000 or more, by the GPC method using polystyrene as a standard from the viewpoint of achieving both viscosity adjustment and handleability during powdering. 13,000 or less is more preferable, and 7,000 or more and 9,000 or less is further preferable. As the water-soluble binder, a water / ethanol mixture can be used as the solvent to measure polyethylene glycol.

When the water-soluble binder is used, two or more kinds of water-soluble binders having different number average molecular weights can be combined.

The content ratio of the excipient to the acid (excipient / acid) is preferably 2% by mass or more and 20% by mass or less, and more preferably 5% by mass or more and 15% by mass or less from the viewpoint of improving the coating efficiency of the acid. Within the above range, the solubility in water is improved and the foamability is enhanced.

The additive is not limited to its original use, and may be used for other purposes depending on the purpose. For example, the fragrance may be used as a cooling agent, and for example, it has the effects of a fragrance and a cooling agent. Like the additive, it can be used for other purposes in addition to the original use.

Examples of the form of the composition include granules, powders, tablets, briquettes and the like from the viewpoint of rapidly disintegrating in water to generate carbon dioxide and improving the stability of carbonate or bicarbonate. Tablets are molded by a rotary tableting machine, a hydraulic tableting machine, an eccentric tableting machine, a briquetting machine, a compression molding machine, or the like.

Of these, tablets are preferable because they are easy to put in a container. The tablets can generate carbon dioxide in water after sinking towards the bottom of the container. The tablet can be dissolved in preferably 15 seconds or more and 120 seconds or less, more preferably 20 seconds or more and 90 seconds or less, and more preferably 25 seconds or more and 70 seconds or less. In order to make it last longer, it is also preferable to shake the container containing the mixed solution so as to insolubilize 10% or more and 30% or less, preferably 15% or more and 25% or less of the carbonate or hydrogen carbonate. After the start of release of the mixed solution, the flow rate gradually decreases. Nevertheless, if insoluble carbonate or bicarbonate (residue) remains in the water, for example, the container can be shaken again to regenerate carbon dioxide gas.

The average particle size of the tablets is preferably 1 mm or more and 12 mm or less, more preferably 1.5 mm or more and 11 mm or less, and further preferably 1.8 mm or more and 10 mm or less. The average particle size can be determined as the particle size distribution measured by JIS K 0069. The average height (thickness) is preferably 0.8 mm or more and 10 mm or less, more preferably 1.0 mm or more and 8 mm or less, and further preferably 2 mm or more and 7 mm or less. In the present invention, when the tablet is upright, the average particle size represents the largest size horizontally and the average height represents the tallest size vertically. The shape of the tablet is not limited to a specific one, and may be spherical / non-spherical, and / or symmetrical / asymmetric.

Here, the average particle size and the average tablet height (thickness) mean the average of the maximum diameter and the average of the maximum height (thickness) of the projected area.

From the viewpoint of quickly submerging the tablet in the bottom of water and dissolving it in water, the density of the tablet is not particularly limited as long as it is higher than the density of water (1.0 at 4 ° C.), preferably 1 or more, more preferably 1. It is larger, more preferably 1.1 or more and 2.5 or less. The density of a tablet can be calculated by measuring its weight and volume and then dividing the weight by volume.

When the average particle size and specific gravity of the tablet are in the above ranges, the tablet dissolves appropriately when the tablet and water are mixed to obtain a mixed solution. "Moderately soluble" means that most of the tablets are dissolved, but some remain undissolved. According to the method of the present invention, it is possible to continuously apply a constant amount of a carbon dioxide-containing aqueous solution to the skin. For this purpose, it is preferable that the tablets are not completely dissolved and some of them are present as granules in the mixed solution. That is, when the pressure becomes weak while applying the carbon dioxide-containing aqueous solution to the skin, the container is changed from the open state to the sealed state, and then the step of generating carbon dioxide again is taken to further generate carbon dioxide. Since carbon can be generated, a carbon dioxide-containing aqueous solution having a constant pressure can be continuously applied to the skin.

Powder is preferred from the standpoint of being quickly soluble in water. The time for dissolving the powder in water is, for example, preferably 1 second or more and 20 seconds or less, more preferably 5 seconds or more and 20 seconds or less, and further preferably 5 seconds or more and 10 seconds or less. The particle size contained in the powder is not limited, but is, for example, 0.01 mm or more and 12 mm or less. The average particle size can be determined as a particle size distribution as measured according to JIS K 0069. The apparent density can be measured according to JIS K 3362. Further, from the viewpoint of preventing the powder from caking, the anti-caking agent is preferably contained in the powder. Preferred anti-caking agents include MgO, SiO ₂ , Ca ₂ O ₄ Si, Mg ₃ Si ₄ O ₁₀ (OH) ₂ , talc, kaolin, bentonite and the like.

In fact, powders are preferred from the standpoint of rapid dissolution in water, but if they dissolve too quickly, the reaction of the carbonate and / or bicarbonate with the acid may be accelerated. As a result, the mixed solution overflows. From the standpoint of balancing the dissolution rate, the powder may be stored in sachets, which may be permeable or water soluble to delay the dissolution of the powder in water. The pouch containing the powder inside may be put into the container of step (a).

FIG. 6 shows an embodiment in which carbonate and / or bicarbonate and acid are encapsulated in a tetrahedral pouch 100 (as a plurality of powders 10). The material of the pouch 100 is not particularly limited as long as the dissolution of the composition in water is delayed, but the pouch is made of a mesh material, a filter paper, a non-woven fabric (for example, polyethylene), a water-soluble film (for example, polyvinyl alcohol), or the like. You can. In FIG. 6, the powder 10 is enlarged for ease of understanding. For example, the powder may be placed in a pouch prior to being placed in a container. The pouch prevents direct contact between water and powder and delays dissolution in water.

In another embodiment, the composition can be charged into an internal strainer. FIG. 7 shows an aspect of the internal strainer 20. The internal strainer 20 is provided with a plurality of meshes 22. The internal strainer 20 is configured to be attached to the container. For example, when the composition is a powder, the powder can be charged into an internal strainer provided in the container of step (a). The strainer structure delays the dissolution of the composition in water. In FIG. 7, the internal strainer 29 has a cap receiver 24 at the upper end. In FIG. 7, the cap receiver 20 is configured so that it can be connected to the cap via a screw structure. Additional or alternative, the cap receiver 20 is configured to be coupled to the spout via a screw so that the mixed solution can be easily discharged.

In step (a), a composition containing water and a carbonate or a bicarbonate or an acid is mixed in a container to obtain a mixed solution (FIG. 3). That is, water and the composition are mixed in a container. For example, (i) the composition is put into a container containing water, the composition is added to water and the mixed solution is immediately put into the container, (ii) water and the composition are simultaneously or This is done by charging the containers separately, or (iii) charging water into the container containing the composition. The amount of water charged into the container is not limited, but is within the internal volume of the container and is 300 mL or more and 3 L or less, preferably 350 mL or more and 2 L or less, and more preferably 350 mL or more and 1 L or less. In one embodiment, the amount of water in the container is preferably 300 mL or more and 3 L or less, and the container is preferably made of resin.

Here, the mass ratio [(i) / (ii)] of the total content of (i) carbonate and bicarbonate in the container to (ii) water is the point of obtaining a sufficiently high concentration carbon dioxide-containing aqueous solution. From the viewpoint of obtaining a sufficient injection force, 0.005 or more and 0.5 or less is preferable, 0.006 or more and 0.3 or less is more preferable, and 0.007 or more and 0.1 or less is further preferable. In the present invention, (i) the total content of carbonate and bicarbonate represents the amount introduced into water or the amount in the composition to be introduced.

The mass ratio of the composition (iii) to (ii) water in the container [(iii) / (ii)] is determined from the viewpoint of obtaining a sufficiently high concentration carbon dioxide-containing aqueous solution and obtaining a sufficient jetting force. It is preferably 0.007 or more and 0.08 or less, preferably 0.009 or more and 0.06 or less, and further preferably 0.01 or more and 0.05 or less.

The ratio (mass ratio) of water to the internal volume of the container is 0.3 from the point of obtaining a high-concentration carbon dioxide-containing aqueous solution and the point of generating a sufficient amount of carbon dioxide when the container is shaken in step (c). More than 0.9 or less is preferable, 0.5 or more and 0.9 or less is more preferable, and 0.7 or more and 0.9 or less is further preferable.

Carbon dioxide gas is generated in step (c) from the viewpoint of obtaining a high-concentration carbon dioxide gas-containing aqueous solution and generating a sufficient amount of carbon dioxide gas when the step of generating carbon dioxide in step (c) is performed. The ratio (mass ratio) of headspace to the carbon dioxide-containing aqueous solution after generation is preferably 0.1 or more and 2.3 or less, more preferably 0.1 or more and 1.0 or less, and 0.1 or more and 0. 4 or less is more preferable.

The temperature of the water used is preferably 20 ° C. or higher and 43 ° C. or lower from the viewpoint of the solubility of carbonate or bicarbonate and the refreshing feeling when sprayed onto the body. From the viewpoint of improving the refreshing effect, the temperature of the water used is preferably 20 ° C. or higher and 35 ° C. or lower, and preferably 25 ° C. or higher and 35 ° C. or lower. From the viewpoint of enhancing the thermal effect, the temperature is preferably 30 ° C. or higher and 42 ° C. or lower, more preferably 38 ° C. or higher and 42 ° C. or lower.

Step (b) is a step of closing the container containing the mixed solution. Specifically, the container can be sealed with the sealable cap.

Step (c) is a step of supersaturating carbon dioxide in the container. Examples of the step of generating carbon dioxide include means of allowing the container to stand still and shaking the container by hand. From the viewpoint of efficiently generating carbon dioxide in a short time, the container is mixed by shaking by hand. It is preferable to shake the solution (Fig. 4). By this step (c), a large amount of carbon dioxide can be generated in the mixed solution.

The number of times the container is shaken may vary depending on the object of the present invention. For example, if it is desired to obtain a strong pressure from a carbon dioxide-containing aqueous solution, the container may be shaken at high speed. Alternatively, if you want to apply for a long time, you can shake the container slowly. The rate can be determined by observing how much carbonate or bicarbonate is dissolved in water. If you want to make it last longer, it is preferable to shake the container so that preferably 70% to 90%, more preferably 75% to 85% of the carbonate or hydrogen carbonate is dissolved in water.

Step (d) is the step of discharging the mixed solution from the container and applying it to the body (FIG. 5). Specifically, since a large amount of carbon dioxide is generated inside the container, when the cap of the container is opened, the mixed solution extruded by gas pressure is vigorously ejected from the container. The liquid thus ejected can be applied to the body.

Here, the ejection time of the mixed solution is preferably 15 seconds or more and 3 minutes or less, more preferably 30 seconds or more and 2 minutes or less, and further preferably 45 seconds or more and 90 seconds or less, from the viewpoint of simple and short washing. To adjust the ejection time to this range, the ejection speed may be adjusted, and the ejection speed is the mass ratio of the above-mentioned carbonate or bicarbonate to water in the container, the ratio of water to the internal volume of the container, and the inside of the container. It is determined by the amount of water in the container and the inner and outer diameters of the spout of the container. The location of the spout is not limited, in one aspect the spout is provided on the container and in the other the spout is provided on the cap. The spout includes an external port and an internal port. The outer mouth is visible from the outside of the container, but the inner mouth is located on the opposite side of the outer mouth. The mixed solution will pass through the inner port and then eject from the outer port.

The number of spouts and the inner and outer diameters of each spout of the container are not limited. The number of spouts may be one or more, preferably 1 or more and 60 or less, and more preferably 1 or more and 40 or less. Another aspect of the number of spouts depends on the ratio of the outer diameter of the spout to the shower area diameter and the ratio of the total spout area to the shower area. Shower area is defined as the area of a single spout or multiple spouts arranged in a pattern with a fictitious circle drawn from the furthest position on the edge of the outermost spout to another spout. The ratio of the outer diameter of the spout to the shower area diameter is preferably 0.01 or more and 0.3 or less, more preferably 0.05 or more and 0.17 or less, of the total area of the spout and the shower area. The ratio is preferably 0.01 or more and 0.2 or less, and more preferably 0.03 or more and 0.1 or less. The inner diameter of the spout is preferably 0.01 mm or more and 5 mm or less, and more preferably 0.01 mm or more and 4 mm or less. The outer diameter of the spout is preferably 0.01 mm or more and 5 mm or less, and more preferably 0.1 mm or more and 4 mm or less.

The form of the spout is represented by the relationship between the outer spout from which the mixed solution is ejected and the spout on the inlet side connected to the spout side. That is, it may have a conical shape in which the diameter increases or decreases from the bottom to the top (from the bottom of the container toward the spout). Further, it may be vertically linear, or may be inclined from bottom to top or from top to bottom. Specifically, as shown in FIG. 9, one conical spout whose diameter increases from bottom to top, two to thirty straight spouts, and from bottom to top. Examples thereof include 2 to 30 sloping spouts.

By adjusting the inner diameter of the spout, the jet time of the mixed solution in the container can be adjusted. That is, when a sufficient amount of carbon dioxide is generated inside the bottle by the step of supersaturating carbon dioxide in the container of step (c), the injection time of the mixed solution can be shortened by reducing the inner diameter of the ejection port. It can be long enough. For example, when the mixed solution is 400 mL or more and 1 L or less, and the injection time is to be adjusted to 45 seconds or more and 2 minutes or less, the inner diameter of each ejection port can be set to 1 mm or more and 4 mm or less.

The shape of the spout is not particularly limited, such as circular, elliptical, or polygonal, but is preferably circular from the viewpoint of applying the mixed solution to a desired site at a constant ratio.

FIG. 8 shows the immersion tube inside the container when the container is turned upside down. In this embodiment, the immersion tube has a weight at the tip. When the container is turned upside down, the tip of the immersion tube is lowered so that the mixed solution continues to be discharged from the container despite the reduced volume. The immersion tube is preferably a flexible tube that is connected to a weight and easily bends when the container is turned upside down.

After step (d), steps (b) to (d) or steps (c) to (d) may be repeated.

The method of the present invention may also include a further step; step (e) squeezing the container to release the mixed solution. In addition, the method of the present invention can be further used before or after a conventional carbonate-free shower. The method of the present invention can include a method that does not include any other steps such as a rinsing step or a drying step.

By injecting a mixed solution containing a large amount of carbon dioxide onto the skin, the skin surface is washed, and a blood circulation promoting effect and a refreshing effect on the skin surface can be obtained. Moreover, these effects can be obtained by an extremely short time and easy operation. In addition, the method of the present invention can release a high content carbon dioxide mixture, which is a composition containing water and carbonate and / or bicarbonate prepared separately prior to use but at the time of use. Because it is mixed.

The method of the present invention can not only release a large amount of carbon dioxide mixture to the whole body, but also release a cooling agent, an ultraviolet absorber, a conditioning agent, an fragrance, etc. by using a composition containing these. can do. That is, the present invention can be used as a leave-on type cosmetic that does not require a step of rinsing with water.

The present invention further relates to a skin cleanser kit. The skin cleansing kit of the present invention can include containers, caps, carbonates and / or bicarbonates, as well as compositions containing acids, all of which have already been mentioned. The skin cleansing kit can be used in the skin cleansing method of the present invention.

With respect to the above embodiments, the present invention further discloses the following cleaning methods.
<1> (a) A step of mixing water with a composition containing a carbonate or a hydrogen carbonate and an acid in a container to obtain a mixed solution, wherein (i) a carbonate or a hydrogen carbonate and a container. (Ii) The mass ratio with water [(i) / (ii)] is 0.005 or more and 0.05 or less, and the ratio of water to the internal volume of the container is 0.7 or more and 0.9 or less;
(B) The step of closing the container containing the mixed solution;
(C) the step of generating carbon dioxide in the container; and (d) the step of releasing the mixed solution from the container and applying it to the skin.
A skin cleansing method that includes the steps of.

<2> The skin cleaning method according to <1>, wherein the container is preferably made of a resin, more preferably a polyethylene-based container, and further preferably made of polyethylene terephthalate (PET).

<3> The skin washing method according to <1> or <2>, wherein the content of the container is preferably 300 mL or more and 3 L or less, and more preferably 350 mL or more and 2 L or less.

<4> The maximum inner diameter of the container is preferably 50 mm or more and 135 mm or less, more preferably 55 mm or more and 115 mm or less, further preferably 60 mm or more and 85 mm or less, and / or the height of the container is preferably 200 mm or more and 320 mm or less, and 200 mm or more and 270 mm or less. The skin washing method according to any one of <1> to <3>, more preferably 200 mm or more and 240 mm or less.

<5> The skin washing method according to any one of <1> to <4>, wherein the container has a cap provided with a spout, and the cap can be sealed.

<6> The skin washing method according to any one of <1> to <5>, wherein the container further has a dipping tube having a length that reaches the bottom of the container.

<7> The skin cleaning method according to any one of <1> to <6>, wherein the immersion tube is a flexible tube with a weight that easily bends when the container is turned upside down.

<8> The acid is an organic acid, preferably one or more selected from the group consisting of succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid and salicylic acid. It is preferably one or more selected from the group consisting of succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid and citric acid, and more preferably one selected from the group consisting of succinic acid, fumaric acid and malic acid. The skin cleaning method according to any one of <1> to <7> described above.

<9> The total content of carbonate and bicarbonate is 5% by mass or more and 80% by mass or less, preferably 10% by mass or more and 60% by mass or less, and / or the acid content is 10% by mass or more. The skin cleaning method according to any one of <1> to <8>, which is 80% by mass or less, preferably 15% by mass or more and 60% by mass or less.

<10> The composition is further water-insoluble or sparingly soluble powder, refreshing agent, UV absorber, conditioning agent, essential oil, air freshener, excipient, binder, disintegrant, animal and plant extract, antibacterial agent, pigment, fragrance. The skin cleaning method according to any one of <1> to <9>, which contains one or more selected from an oily component and a surfactant.

<11> The skin cleansing method according to <10>, wherein the water-insoluble or sparingly soluble powder is selected from the group consisting of silicone powder, bentonite, potassium aluminum sulfate and zinc phenol sulfonate.

<12> The skin cleansing method according to <10>, wherein the refreshing agent is selected from the group consisting of menthol, camphor, monomentyl glyceryl ether and menthol lactate.

<13> Ultraviolet absorbers are paraaminobenzoic acid, octyl p-methoxycinnamate (2-ethylhexyl p-methoxycinnamate), glycerylmono-2-ethylhexanoyldiparamethoxycinnamate, silylisopentyltrimethoxycinnamatetri. Siloxane and other cinnamic acid-based UV absorbers, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 2- (2' -Hydroxy-5'-methylphenylbenzotriazole, 4-methoxy-4'-t-butyldibenzoylmethane, 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one, bis-ethylhexyl The skin according to <10>, which is selected from oxyphenol-methoxyphenyltriazine, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] 1,3,5-triazine, and dimorpholinopyridadinone. Cleaning method.

<14> Conditioning agents are propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1,3-butylene glycol, 1,2,6-hexanetriol, glycerol ethoxylate and glycerol. The skin cleaning method according to <10>, which is selected from the group consisting of propoxylate.

<15> Essential oils are amber oil, bergamot, cedar wood, chamomile oil, cinnamon oil, citronella oil, cypress oil, eucalyptus oil, geranium oil, ginger oil, grapefruit oil, honey oil, jasmine oil, lavender oil, lemon oil, lime oil. The skin cleaning method according to <10>, which is selected from lemongrass oil, neroli oil, perilla oil, rose oil, rosemary oil, sandalwood oil, tangerine oil, tea tree oil, thyme oil, and ylang ylang oil.

<16> The skin cleansing method according to any one of <1> to <15>, wherein the composition is a tablet.

<17> The skin washing method according to <16>, wherein the average particle size of the tablet is preferably 1 mm or more and 12 mm or less, more preferably 1.5 mm or more and 11 mm or less, and further preferably 1.8 mm or more and 10 mm or less. ..

<18> (i) The mass ratio of the total content of carbonate and bicarbonate to (ii) water [(i) / (ii)] is preferably 0.006 or more and 0.3 or less, more preferably. The skin washing method according to any one of <1> to <17>, which is 0.007 or more and 0.1 or less.

<19> The mass ratio of (iii) the composition to (ii) water in the container, [(iii) / (ii)] is preferably 0.007 or more and 0.08 or less, more preferably 0.009. The skin washing method according to any one of <1> to <18>, which is 0.06 or more, more preferably 0.01 or more and 0.05 or less.

<20> The ratio (volume ratio) of water to the internal volume of the container is preferably 0.3 or more and 0.9 or less, more preferably 0.5 or more and 0.9 or less, and further preferably 0.7 or more. The skin washing method according to any one of <1> to <19>, which is 0.9 or less.

<21> The temperature of the water used is preferably 20 ° C. or higher and 43 ° C. or lower, more preferably 20 ° C. or higher and 35 ° C. or lower, and further preferably 30 ° C. or higher and 43 ° C. or lower. <1> to <20> The skin washing method according to any one of the above.

<22> The ejection time of the mixed solution is preferably 15 seconds or more and 3 minutes or less, more preferably 30 seconds or more and 2 minutes or less, and further preferably 45 seconds or more and 90 seconds or less <1> to <21>. The skin cleaning method according to any one of the above.

<23> The item according to any one of <1> to <20>, wherein the container is provided with one or more spouts, preferably one or more and 60 or less spouts, and more preferably one or more and 40 or less spouts. Skin cleaning method.

<24> The inner diameter of the spout is preferably 0.01 mm or more and 5 mm or less, more preferably 0.1 mm or more and 4 mm or less, and / or the outer diameter of the spout is preferably 0.01 mm or more and 5 mm or less, more preferably. The skin washing method according to any one of <1> to <23>, which is 0.1 mm or more and 4 mm or less.

<25> The spout has a conical spout whose diameter increases from the bottom to the top, a vertically linear shape, or a shape inclined from the bottom to the top <1> to <24. > The skin cleaning method according to any one item.

<26> The skin washing method according to any one of <1> to <15>, wherein the composition is a powder and the powder is contained in a pouch before being put into a container.

<27> The skin washing method according to any one of <1> to <15>, wherein the composition is a powder and is placed in an internal strainer provided in a container.

The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
[Example 1]

Example 1
(1) Preparation of tablets Tablets A, B and C shown in Table 1 were mixed and compression-molded by a tablet manufacturing apparatus.

(2) When a PET bottle with a cap (bottle diameter: about 2.5 cm; bottle height: about 20.5 cm; bottle body diameter: about 6.6 cm) is prepared and filled with 400 mL of water. Allowed 123 mL of headspace. The cap is a screw-type recloseable mechanism, and the spout has a diameter of 1 mm or more and 4 mm or less (the shape of the diameter is linear, and the number of mouths is 6).

* Other components of the tablet A: _{glucose, PEG6000, MgO, Ca 2 O} 4 Si, silicates, sucrose fatty acid esters, glycine, flavor, and color * other components of the tablet _{B: Al 2 (SO 4)} 3 · 16H 2 O, menthol, tea extract, polyoxyethylene (capril / capric acid) glyceryl, ethanol, flavors and colorants * Other ingredients of tablet C: 0054 ₄ , dried NaSO ₄ , soybean oil, PEG (120), polyoxyethylene Polyoxypropylene EDTA, PVP, BHT, fragrances and colorants

(3) Evaluation (3-1) First discharge test The cap of the PET bottle was opened and 400 mL of water at 30 ° C. was added. Subsequently, the above composition (8 g for Examples 1-1, 1-2, 1-3, 4 g for Example 1-4, 30 g for Example 1-5) was added, and the PET bottle was displayed. It was closed with a cap of 3. The bottle was shaken 30 times with one hand with a swing width of 30 cm. When the bottle is opened, the carbon dioxide-containing aqueous solution is released, which eventually becomes the last drop in one discharge, regardless of the composition used for the next discharge. The volume and time of the first discharge were measured to determine the average volume flow rate.

(3-2) Evaluation of skin cleansing feeling The cap of the PET bottle was opened, and 400 mL of water at 30 ° C. was added. Subsequently, the above composition (8 g for Examples 1-1, 1-2, 1-3, 4 g for Examples 1-4, and 30 g for Examples 1-5) was added. The PET bottle was closed with the cap shown in Table 3. The bottle was shaken 30 times with one hand with a swing width of 30 cm. When the bottle was opened, a carbon dioxide-containing aqueous solution was released, which was placed on the arm of a professional panelist. The bottle was then resealed and shaken again 2-3 times. And the same application method was repeated until all the contents were exhausted. At the same time, the other arm was sprinkled with water. The five panelists who performed the above application performed a sensory evaluation of the feeling of washing by touching the skin after wiping their arms with a towel according to the following five evaluation criteria. The average score of the five panelists was determined.
5: Clear cleaning feeling / No stickiness at all 4: Cleaning feeling than when only water is applied / Not so sticky 3: Same as when only water is applied / Slightly sticky 2: Cleaning feeling Not obtained / sticky 1: No cleansing feeling / sticky

(3-3) Evaluation of the refreshing feeling of the skin The cap of the PET bottle was opened, and 400 mL of water at 30 ° C. was added. Subsequently, the above composition (8 g for Examples 1-1, 1-2, 1-3, 4 g for Examples 1-4, and 30 g for Examples 1-5) was added. The PET bottle was closed with the cap shown in Table 3. The bottle was shaken 30 times with one hand with a swing width of 30 cm, the bottle was opened, and the carbon dioxide-containing aqueous solution was released, which was hung on the arm of a professional panelist. The bottle was then resealed and shaken again 2-3 times. And the same application method was repeated until all the contents were exhausted. At the same time, the other arm was sprinkled with water. After wiping their arms with a towel, the five panelists who performed the above application performed a sensory evaluation of the refreshing feeling according to the following five evaluation criteria. The average score of the five panelists was determined.
5: There is a clear refreshing feeling 4: There is a refreshing feeling than when only water is applied 3: It is the same as when only water is applied 2: There is almost no refreshing feeling 1: There is no refreshing feeling at all Shown in 2. From the results in Table 2, this method is applicable to various compositions such as Examples 1-1, 1-2, 1-3, and carbonates such as Examples 1-1-1-5. It is shown that various mass ratios of salt and bicarbonate to water allow the desired discharge.

By using the above formulas, containers and caps, the method can be applied to the whole body and parts of the body such as chest, arms, shoulders, abdomen and legs for 14 seconds to over 1 minute and is clean. Gives a feeling and a refreshing feeling.
[Example 2]

A PET bottle with a cap (bottle diameter: about 2.5 cm; bottle height: about 20.5 cm; bottle body diameter: about 6.6 cm) was filled with 400 mL of water to prepare 123 mL of headspace. .. The cap was a screw-type resealing mechanism with a spout. The spout of the cap was changed as shown in # 1, # 2, and # 3 of FIG. 7, and the spouting state of the mixed solution from the spout of the mixed solution was verified using tablet B (see Table 3) in Table 1.

By this operation, the sweat on the arm was also washed away cleanly regardless of the mode of the cap. And I got a more refreshing feeling.
[Example 3]

(1) Composition Tablet C in Table 1 was used in this example.
(2) Equipment A PET bottle with a cap (bottle diameter about 2.5 cm, bottle height about 20.5 cm, bottle body diameter 6.6 cm) that produces 123 mL of headspace when filled with 400 mL of water was prepared. .. Cap # 2 in Table 3 was used. The immersion tube was connected to the cap of Example 2-5.

(3) First Discharge Test The test was carried out in the same manner as in Example 1 except that the bottle was shaken 30 to 60 times with one hand with a swing width of 10 to 30 cm. In Table 4, the "composition remaining in the mixed solution before ejection" indicates whether this method could be reused by sealing and shaking the bottle after the first ejection.

(4) Evaluation of skin cleansing feeling The test was carried out by the same method as described in Example 1 except that the bottle was shaken 30 to 60 times with one hand with a swing width of 10 to 30 cm.

(5) Evaluation of refreshing feeling The test was carried out in the same manner as in Example 1 except that the bottle was shaken 30 to 60 times with one hand with a swing width of 10 to 30 cm.

By this operation, the sweat on the arm was washed away, and a refreshing feeling was obtained. In addition, a slight redness of the skin, which was thought to be due to the blood flow promoting effect, occurred.
[Example 4]

(1) Method for comparison with the present invention Example 2-1 (see Table 4), (1) a general shower with water only for the same usage time, (2) the same amount as the mixed solution The mixed composition of the above was compared with the comparative method of bathing in a general instrument (bucket). The mixture was applied to the chest, arms, shoulders, abdomen and legs and then wiped with a towel. It was found that the amount of liquid in the present invention was smaller than the amount of liquid in the conventional method of using a bucket.

(2) Evaluation method The superiority or inferiority of the cleaning ability, flexibility during use, and portability by transporting the device from one place to another after performing the above-mentioned cleaning method by five evaluators. , From the best to the worst, the evaluation was made with the scores of "A", "B" and "C".
The conditions and results are shown in Table 5. It is clear that the present invention exerts an excellent effect on the comparative controls (1) and (2).

In another embodiment, the composition can be charged into an internal strainer. FIG. 7 shows an aspect of the internal strainer 20. The internal strainer 20 is provided with a plurality of meshes 22. The internal strainer 20 is configured to be attached to the container. For example, when the composition is a powder, the powder can be charged into an internal strainer provided in the container of step (a). The strainer structure delays the dissolution of the composition in water. In FIG. 7, the internal strainer 29 has a cap receiver 24 at the upper end. In FIG. 7, the cap receiver 20 is configured so that it can be connected to the cap via a screw structure. Additional or alternative, the cap receiver 24 is configured to be coupled to the spout via a screw so that the mixed solution can be easily discharged.

<7> The skin cleaning method according to <6> , wherein the immersion tube is a flexible tube with a weight that easily bends when the container is turned upside down.

<24> The inner diameter of the spout is preferably 0.01 mm or more and 5 mm or less, more preferably 0.1 mm or more and 4 mm or less, and / or the outer diameter of the spout is preferably 0.01 mm or more and 5 mm or less, more preferably. The skin washing method according to <5> or <23> , which is 0.1 mm or more and 4 mm or less.

<25> The spout has a conical spout whose diameter increases from the bottom to the top, a vertically linear shape, or a shape inclined from the bottom to the top <5>, <23. > Or the skin cleaning method according to any one of <24> .

Claims (9)

The step of mixing (a) water with a composition containing carbonate and / or bicarbonate and acid in a container to obtain a mixed solution, wherein the (i) carbonate and bicarbonate in the container The total content (ii) mass ratio to water [(i) / (ii)] is 0.005 or more and 0.05 or less, and the ratio of water to the internal volume of the container is 0.7 or more and 0.9 or less. is there;
(B) The step of closing the container containing the mixed solution;
(C) Supersaturating carbon dioxide in the container; and (d) Discharging the mixture from the container and applying it to the skin.
A skin cleansing method characterized by having. The skin cleansing method according to claim 1, wherein the composition further contains a water-insoluble or sparingly water-soluble powder. The skin cleansing method according to claim 1 or 2, wherein the composition further contains a refreshing agent, a conditioning agent, an essential oil and / or a fragrance. The skin according to any one of claims 1 to 3, wherein the container is a container with a cap capable of sealing and discharging the mixed solution inside, and step (d) is a step of discharging the mixed solution through the cap. Cleaning method. The skin washing method according to any one of claims 1 to 4, wherein step (c) is a step of shaking the container by hand or stirring the mixed solution. The skin washing method according to any one of claims 1 to 5, wherein the volume of water in the container is 400 mL to 2 L, and the container is made of resin. The skin cleansing method according to any one of claims 4 to 6, wherein the cap has a soaking tube having a length reaching the bottom of the container. The skin cleansing method according to any one of claims 1 to 7, wherein the composition is a solid selected from the group consisting of granules, powders, tablets and brisket. A skin cleanser kit containing a container, a cap, and a composition containing carbonate and / or bicarbonate and acid.