JP6985752B2 - Kit for external skin preparation - Google Patents

Description

The present invention is a kit for obtaining an effervescent skin external preparation, in which the first agent is a composition containing a carbon dioxide gas generating substance, a gelling agent and water, and the second agent is an acid, water and polyvalent. The present invention relates to a kit characterized by being a composition containing alcohol.

Since carbon dioxide has an effect of promoting blood circulation in the skin when it acts on the skin, various external skin preparations using carbon dioxide have been proposed. Most of these generate carbon dioxide gas by the reaction of acid and carbon dioxide gas generating substance. For example, in order to maintain the effect of the generated carbon dioxide gas, a method of mixing and using a water-containing viscous composition containing an acid, water and a thickener and a solid carbon dioxide gas generating substance immediately before use has been proposed. (Patent Document 1). In addition, a granular substance containing a substance that is hydrolyzed to produce an acid, a carbonate, a thickener, a gelling agent that gels with calcium ions, and a water-insoluble or sparingly water-soluble calcium salt is mixed with water immediately before use. A method to be used has been proposed (Patent Document 2). In addition, a method using a composition that gels with xyloglucan and a polyhydric alcohol has been proposed.

WO99 / 24043 WO2006 / 80398 Gazette Japanese Unexamined Patent Publication No. 2014-181192

However, when carbon dioxide gas is generated by the method described in Patent Document 1, it is difficult to uniformly mix the hydrous viscous composition and the solid carbon dioxide gas generating substance, and foaming due to carbon dioxide gas tends to be uneven, resulting in foaming. It takes time to start. Further, the method described in Patent Document 2 is troublesome for the user because it takes time and effort to measure water, and the viscosity and the amount of carbon dioxide gas generated at the time of use are not constant depending on the quality of the water used. , The effect will be different depending on the use. Further, in the method described in Patent Document 3, although it is easy to remove after use, it is difficult to obtain the effect of carbon dioxide gas because the composition has a high viscosity and is designed to easily gel.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a kit for obtaining an effervescent skin external preparation of constant quality, which is easily mixed uniformly at the time of mixing, carbon dioxide gas is generated evenly.

The present invention provides a kit for obtaining the following effervescent skin external preparation (hereinafter, also referred to as the kit of the present invention).
<1> A kit for obtaining an effervescent skin external preparation, which contains a carbon dioxide gas generating substance, an acid, a gelling agent, a polyhydric alcohol and water, and is either (A) or (B) below. A kit characterized by being in the form.
(A) A composition in which the first agent contains a carbon dioxide gas generating substance, a gelling agent and water, and the second agent contains an acid, water and a polyhydric alcohol.
(B) A composition in which the first agent contains an acid, a gelling agent and water, and the second agent contains a carbon dioxide gas generating substance, water and a polyhydric alcohol.
<2> The kit according to <1>, wherein the gelling agent of the first agent is tamarind gum.
<3> The kit according to any one of <1> or <2>, wherein the second agent is a liquid composition.
<4> The kit according to any one of <1> to <3>, wherein the viscosity of the first agent is 100 mPa · s or more.
<5> The kit according to any one of <1> to <4>, wherein the viscosity of the second agent is 20,000 mPa · s or less.

According to the present invention, it is possible to provide a kit that is easy for the user to mix uniformly at the time of mixing, carbon dioxide gas is generated evenly and immediately, the effect of carbon dioxide gas is easily obtained, and it is easy to remove after use. Further, by using the effervescent skin external preparation obtained by using the kit of the present invention as a pack agent, an effect of improving the skin condition, particularly a whitening effect in a short time can be obtained.

The present invention is a kit for obtaining an effervescent skin external preparation, which contains a carbon dioxide gas generating substance, an acid, a gelling agent, a polyhydric alcohol and water, and is either (A) or (B) below. The present invention relates to a kit characterized by being in the form of.
(A) A composition in which the first agent contains a carbon dioxide gas generating substance, a gelling agent and water, and the second agent contains an acid, water and a polyhydric alcohol.
(B) A composition in which the first agent contains an acid, a gelling agent and water, and the second agent contains a carbon dioxide gas generating substance, water and a polyhydric alcohol.

Then, in the kit of the present invention, the user can appropriately mix the first agent and the second agent at the time of use to cause foaming due to the generation of carbon dioxide gas, and apply the agent to the skin for use. The kit of the present invention has the characteristics that the storage stability is good and the user can easily handle it at the time of use by dividing it into the first agent and the second agent. In addition, by containing the gelling agent and the polyhydric alcohol, the effervescent skin external preparation can be gelled by the aggregation of the gelling agent by the dehydration action and the formation of a higher-order network by the hydrogen bond between the polyhydric alcohol and the gelling agent. Therefore, it can be easily removed after use. Hereinafter, each component contained in the kit of the present invention and the effervescent skin external preparation obtained by using the kit of the present invention and a method for producing the same will be described.

The kit of the present invention contains a carbon dioxide generating substance, an acid, a gelling agent, a polyhydric alcohol and water. Details of the present invention will be described below.

≪Carbon dioxide generating substances≫
As the carbon dioxide generating substance used in the present invention, various substances can be used without particular limitation. The carbon dioxide gas generating substance to be used is preferably in the form of a solid, and more preferably in the form of granules, fine granules or powder from the viewpoint of solubility in water or a moisturizer.

As the carbon dioxide generating substance, carbonates such as sodium carbonate, calcium carbonate, potassium carbonate, magnesium carbonate, sodium sesquicarbonate, ammonium hydrogencarbonate, potassium hydrogencarbonate, sodium hydrogencarbonate, lithium hydrogencarbonate, cesium hydrogencarbonate, magnesium hydrogencarbonate , Bicarbonates such as calcium hydrogen carbonate and the like, and one or more of these are used. Of these, sodium hydrogencarbonate is more preferable in that hydrogencarbonate can be preferably used and moderate foaming power can be realized.

The blending amount of the carbon dioxide generating substance is preferably 0.05 to 40% by mass, more preferably 0.1 to 35% by mass, and particularly preferably 0.5 to 30% by mass in the first agent or the second agent. .. Further, 0.01 to 30% by mass is preferable, 0.05 to 25% by mass is more preferable, and 0.1 to 20% by mass is particularly preferable in the effervescent skin external preparation.

≪Acid≫
The acid used in the present invention may be either an organic acid or an inorganic acid, and one or more of these may be used.

Organic acids include linear fatty acids such as formic acid, acetic acid, propionic acid, butyric acid and valeric acid or salts thereof, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid, maleic acid and phthalic acid. Dicarboxylic acids such as acid, isophthalic acid and terephthalic acid or salts thereof, acidic amino acids such as glutamic acid and aspartic acid or salts thereof, glycolic acid, malic acid, tartrate acid, citric acid, lactic acid, hydroxyacrylic acid, α-oxybutyric acid, glycerin Examples thereof include oxy acids such as acids, tartronic acid, salicylic acid, gallic acid, tropic acid, ascorbic acid and gluconic acid or salts thereof, and examples of the inorganic acid include inorganic acids such as phosphoric acid and sulfite or salts thereof. One or more of these can be used. Among them, citric acid or its salts, ascorbic acid or its salts, malic acid or its salts, succinic acid or its salts are preferable, and citric acid or its salts and ascorbin are preferable from the viewpoint of safety and solubility in a second agent. Acids or salts thereof are more preferred.

The blending amount of the acid is preferably 0.01 to 40% by mass, more preferably 0.05 to 35% by mass, and particularly preferably 0.1 to 30% by mass in the first agent or the second agent. Further, 0.001 to 30% by mass is preferable, 0.005 to 25% by mass is more preferable, and 0.01 to 20% by mass is particularly preferable in the effervescent skin external preparation.

≪Gelling agent≫
The gelling agent used in the present invention has a property of reacting with a polyhydric alcohol to gel. Specific examples of gelling agents that can be used include tamarind gum.

The blending amount of the gelling agent is preferably 0.01 to 40% by mass, more preferably 0.05 to 35% by mass, and particularly preferably 0.1 to 30% by mass in the first agent. Further, 0.001 to 30% by mass is preferable, 0.005 to 25% by mass is more preferable, and 0.01 to 20% by mass is particularly preferable in the effervescent skin external preparation.

≪Multivalent alcohol≫
The polyhydric alcohol used in the present invention is not particularly limited as long as it has two or more hydroxy groups in one molecule and can be used in ordinary cosmetics, external pharmaceuticals, non-pharmaceutical products, etc., for example. Polyglycerin such as glycerin, diglycerin, triglycerin, tetraglycerin, ethylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, 1,3-propanediol, erythritol , Sugar alcohols such as martitol, mannitol, sorbitol, xylitol, polyglycerin derivatives, saccharides such as sucrose and trehalose, and the like. Of the above-mentioned polyhydric alcohols, it is preferable to use at least one kind of polyhydric alcohol from the viewpoint of storage stability of the second agent, manufacturing cost, and alleviation of irritation to the skin at the time of use, and two or more kinds should be used. Is preferable. In particular, it is preferable to use at least one of glycerin, diglycerin, 1,3-butylene glycol, 1,4-butylene glycol, dipropylene glycol, and polyethylene glycol.

The blending amount of the polyhydric alcohol may be 10% by mass or more, preferably 30% by mass or more, and more preferably 30 to 99% by mass in the second agent. Further, the polyhydric alcohol is preferably blended in the first agent, and when blended, it may be 1% by mass or more, preferably 3 to 50% by mass, and more preferably 5 to 30% by mass. Further, the blending amount of the polyhydric alcohol may be 5% by mass or more in the effervescent skin external preparation, preferably 10 to 90% by mass, more preferably 20 to 80% by mass or more, and 30 to 70% by mass. Especially preferable. If the content of polyhydric alcohol in the effervescent skin external preparation is less than 5% by mass, not only is it difficult to gel during use, but also the effects on the skin such as the amount of diffused water and elasticity are reduced, and handling during use. Ease of mixing, for example, ease of mixing, ease of application, difficulty in dripping, and ease of removal are deteriorated.

≪Water≫
As the water used in the present invention, water that can be used in cosmetics, external medicines, non-pharmaceutical products, etc. can be used, but purified water, distilled water, membrane filtered water, ion-exchanged water, etc. are preferable. In the present invention, each of the first agent and the second agent may be blended in an amount of 0.1% by mass or more, preferably 0.5% by mass or more. Further, the water may be blended in an effervescent skin external preparation in an amount of 5% by mass or more, preferably 10 to 85% by mass, more preferably 20 to 80% by mass. If the amount of water is less than 5% by mass, problems such as difficulty in generating carbon dioxide gas when mixed and a decrease in the amount of carbon dioxide gas generated may occur, and as a result, a sufficient blood circulation promoting action may be obtained. become unable.

In the present invention, the compounding ratio (mass ratio) of polyvalent alcohol: water in the effervescent skin external preparation is not particularly limited, but is preferably 1: 0.05 to 20, more preferably 1: 0.1 to 1. It is 10, and particularly preferably 1: 0.5 to 5. If the mixing ratio of water to the polyhydric alcohol is less than 0.05, it takes time to dissolve the carbon dioxide generating substance, acid, and thickener in the first agent and the second agent, resulting in higher production efficiency. Not only is it worse, but the rate of carbon dioxide generation due to the reaction between the first agent and the second agent is significantly reduced. Moreover, since the gelation rate after mixing the first agent and the second agent is high, gelation occurs before carbon dioxide gas is generated, and it becomes difficult to obtain the effect of carbon dioxide gas such as blood circulation promoting action. In addition, if the amount of water is more than 20 with respect to the polyhydric alcohol, gelation after mixing the first agent and the second agent is remarkably slowed down, which makes it difficult to peel off after use and makes it difficult for the user to use. ..

The first agent of the present invention preferably has a high viscosity. Specifically, the viscosity at 25 ° C. is preferably 100 mPa · s or more, more preferably 500 mPa · s or more, and particularly preferably 1,000 mPa · s or more. In the present invention, when the viscosity of the first agent is less than 100 mPa · s, the composition after mixing with the second agent tends to drip, which is not only difficult to use. It becomes difficult to obtain the effect of the external skin preparation.

It is more preferable that the second agent of the present invention has a low viscosity. Specifically, the viscosity at 25 ° C. is preferably 20,000 mPa · s or less, more preferably 10,000 mPa · s or less, and particularly preferably 5,000 mPa · s or less. Further, the second agent of the present invention is preferably liquid, preferably less than 0.2% by mass when containing a thickener, and more preferably substantially free of a thickener. .. Here, "substantially free of thickener" means that the thickener described later is not contained in the second agent. In the present invention, when the viscosity of the second agent exceeds 20,000 mPa · s, as is clear from Reference Examples 1 and 2, it is difficult to mix the mixture with the first agent, resulting in uneven mixing. Unevenness is likely to occur in foaming.

In the present invention, it is preferable that the viscosity of the first agent is 100 mPa · s or more and the viscosity of the second agent is 20,000 mPa · s or less. More preferably, the viscosity of the first agent is 500 mPa · s or more and the viscosity of the second agent is 10,000 mPa · s or less, and more preferably the viscosity of the first agent is 1,000 mPa · s or more and The viscosity of the second agent is 5,000 mPa · s or less. By setting the viscosities of the first agent and the second agent within the above range, it is possible to achieve both the gelling ability of the effervescent skin external preparation and the effect of carbon dioxide on the skin in a well-balanced manner. In particular, as is clear from the examples described later, the skin condition such as moistness, elasticity, brightness, redness, smoothness, smoothness, and tightness of the skin is improved, and it is easy to mix, apply, and drip during use. Since it is difficult and can be easily peeled off after use, it is easy for the user to handle.

<External skin agent>
The effervescent skin external preparation produced using the kit of the present invention has other active ingredients, a thickener, a moisturizer, and an antiseptic in addition to the ingredients contained in the first agent and the second agent, depending on the use and purpose. Surfactants such as agents, pH regulators, fats and oils, fragrances, colorants, antioxidants, antibacterial and antifungal agents, alcohols, nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, etc. , Inorganic salts, lubricants, solvents, and more than one of the ingredients normally used for external skin preparations can be used. In this case, the component to be added can be used for either the first agent or the second agent, or may be used for either agent.

Hereinafter, representative components other than acids, carbon dioxide generating substances, gelling agents, thickeners, and polyhydric alcohols contained in the effervescent skin external preparation produced by using the kit of the present invention will be described. Further explanation will be given.

The active ingredient used in the present invention is not particularly limited, and drugs, plants and the like used in cosmetics, external medicines, quasi-drugs and the like can be used depending on the purpose. Representative examples include glycyrrhizic acid and its derivatives and their salts, glycyrrhizic acid and its derivatives and their salts, mephenamic acid, phenylbutazone, indomethacin, ibprofen, ketoprofen, allantin, guaiazlen, pantenol, etc. Anti-inflammatory agents such as allantin, ascorbic acid and its derivatives and their salts, cysteine and its derivatives and their salts, glabridin, glabrene, liquoritin, isoliquilithin, placenta, hydroquinone and its derivatives, resorcin and its derivatives, glutathione and other whitening agents , Anti-fat leaking agents such as sulfur and thiantolol, bactericidal agents such as salicylic acid and Oubaku extract, tocopherols and their derivatives, plant components such as licorice, aloe and tea leaves, hormones such as estradiol and the like. When using plant components, the whole plant, leaves (leaf blades, petioles, etc.), fruits (mature, immature, etc.), seeds, flowers (petals, ovary, etc.), stems, rhizomes, roots, bulbs, etc. Can be used as it is by cutting, crushing, crushing, squeezing and extracting, or dried or powdered from these treated products. The active ingredient used in the present invention can be used for both the first agent and the second agent.

When the extract is used in the present invention, the solvent used for the extraction is, for example, water; methanol, ethanol, propanol, butanol, ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, hexylene glycol. , Glycerin, methyl acetate, ethyl acetate, isopropyl acetate, ethyl ether, acetone and other organic solvents can be mentioned. These can be used alone or in combination of two or more. From the viewpoint of safety and the like, it is preferable to use water, ethanol, 1,3-butylene glycol, or a mixed solvent thereof, which are harmless to the human body, as the extraction solvent. The extraction may be performed as long as it is below the boiling point of the extraction solvent, and the extraction time can be appropriately changed depending on the extraction temperature.

The thickener used in the present invention is not particularly limited as long as it is a water-soluble component that can be used in cosmetics, external medicines, quasi-drugs, etc. Polymers, viscous minerals, etc. can be used. The thickener can be used as either the first agent or the second agent, but it is preferably used as the first agent.

Synthetic polymers include carboxyvinyl polymers, polyvinyl alcohol, acrylic acid / alkyl methacrylate copolymers, acrylic acid / alkyl acrylate cross polymers, polyacrylic acid, polyacrylamide, polyalkylacrylamide / polyacrylamide copolymers, carboxymethyl cellulose, cations. Examples thereof include hydrophilic synthetic polymers such as acrylamide and Pluronic.

Examples of the semi-synthetic polymer include carboxymethyl cellulose or salts thereof, propyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, sulfonated cellulose derivative and the like. Other semi-synthetic polymers include propylene glycol alginate, ethylene glycol alginate, dextrin fatty acid ester, gelatin fatty acid ester, gelatin fatty acid amide and the like.

Natural polymers include polysaccharides and their derivatives such as xanthan gum, succinoglycan, carrageenan, guar gum, locust bean gum, celluloses, galactan, arabic gum, tragant gum, agar, agarose, mannan, curdlan, alginic acid or itss. Examples thereof include salts, gum arabic, pectin, quinceed, starch, algae colloid, chondroitin sulfate or salts thereof, chitosan and derivatives thereof. Other natural polymers include nucleic acids or salts thereof, ribonucleic acids or salts thereof, casein, collagen, gelatin, albumin, fibroin, elastin, keratin, sericin and other water-soluble proteins, hyaluronic acid or salts thereof, chondroitin sulfate and the like. Examples include mucopolysaccharide.

Examples of clay minerals include laponite, bentonite, smectite kaolinite, and montmorillonite.

Among the above thickeners, those having high solubility or dispersibility can be uniformly dissolved or dispersed without causing lumps in the thickener, and the skin caused by the undissolved component or the undispersed component. It is preferable because it can alleviate the feeling of roughness.

Examples of such thickeners include carboxyvinyl polymers, carboxymethyl cellulose or salts thereof, polyvinyl alcohol, sodium polyacrylic acid, alginic acid / alkyl methacrylate copolymers, xanthan gum, succinoglycans, carrageenan, guar gum, and locusts. Bean gum, celluloses, galactan, arabic gum, tragant gum, agar, mannan, curdran, alginic acid or its salts, collagen, gelatin, albumin and the like can be mentioned, and carboxymethyl cellulose or its salts, xanthan gum, carrageenan and albumin are used. Is preferable. The thickener may be used alone or in combination of two or more.

Examples of the surfactant used in the present invention include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants. As the surfactant, either a synthetic surfactant or a natural surfactant can be used, but from the viewpoint of skin safety, the natural surfactant is preferable. The term "natural surfactant" as used herein refers to a substance having a surface-active effect mainly derived from animals or plants, and specific examples thereof include phospholipids such as lecithin, glycolipids, lanolin, cholesterol, saponin, and ceramide. Examples thereof include sphingolipids such as pectin, glycyrrhizinate, bile acids, and plant-extracted amino acid-based surfactants. Among them, it is preferable to contain an extract containing phospholipid, saponin, sphingolipid, pectin, and glycyrrhizate, and it is particularly preferable to contain an extract containing saponin. As the extract containing saponin, it is preferable to use a plant-derived extract. Examples of plants containing saponin include soybean, azuki, green bean, spinach, sugar cane, grape, kikyo, licorice, senega, kiraya, mukuroji, saponin, otane carrot, hechima, tea seed, enju, liliaceae, and yam. Plants, chimo (common bean), Bakumondou (wheat gate winter), etc. can be mentioned. In the present invention, as an extract containing saponin, it is preferable to contain an extract of one or more plants selected from soybean, adzuki bean, licorice, Sapindaceae, and loofah among these plants, and in particular, an extract of Sapindaceae. Is preferably contained.

The natural surfactant can be used in combination with a thickener to keep bubbles longer.

<Usage form of effervescent skin external preparation>
When used to obtain an effervescent skin external preparation, the kit of the present invention causes effervescence by carbon dioxide gas by mixing an appropriate amount of the first agent and the second agent in a container. The first agent and the second agent are preferably mixed at a ratio of 1: 0.1 to 1:30, and more preferably at a ratio of 1: 0.5 to 1:10.

As a method for storing the kit of the present invention, a method for storing cosmetics, external medicines, quasi-drugs and the like can be used, and there is no particular limitation. The shape of the storage container to be used can be appropriately selected depending on the intended purpose, and examples thereof include a cup shape, a tube shape, a bag shape, a bottle shape, a stick shape, a pump shape, a jar shape, and a canned shape. Further, as the material constituting the storage container, for example, plastic, glass, aluminum, paper, various polymers and the like can be used alone or by selecting two or more kinds, but the material is not limited thereto.

Specific examples of the container include an aluminum stick whose inner surface is laminated with polyethylene terephthalate, a storage container such as an aluminum bag, a stand pouch with a chuck, and a polyethylene terephthalate inner surface in terms of airtightness, storage stability of contents, manufacturing cost, and the like. A storage container made of polyethylene terephthalate whose lid is heat-sealed with an aluminum film or the like laminated with the above is preferable.

<Use of effervescent skin external preparation>
The effervescent skin external preparation obtained by using the kit of the present invention promotes an increase in skin blood flow, and whitens, improves skin quality, improves freckles, rejuvenates the skin, tightens the skin, partially thins the skin, and relieves the skin. Cleanse, condition the skin, condition the skin, keep the skin healthy, prevent rough skin, tighten the skin, moisturize the skin, keep the skin moisturized and oily, keep the skin soft, Protects the skin, prevents the skin from drying out, softens the skin, gives the skin a suppleness, gives the skin a gloss, smoothes the skin, prevents stains and buckwheat caused by sunburn, and notices fine wrinkles due to dryness. Not only cosmetics aimed at eliminating, but also rough skin, rough skin, rash, rash, cracks, cracks, acne prevention, oily skin, prevention of shavings, prevention of sunburn stains and freckles, sunburn・ The purpose is to prevent burning after snow burning, to tighten the skin, to clean the skin, to condition the skin, to keep the skin healthy, to moisturize the skin, to protect the skin, to prevent the skin from drying out, etc. , Cosmetics, non-pharmaceutical products, pharmaceuticals and other pharmaceutical products can be suitably used. The external skin preparation of the present invention is preferably used as cosmetics and quasi-drugs, and more preferably used as cosmetics such as milky lotions, creams, packs and peeling agents, and medicated cosmetics. In particular, it is preferable to use it as a facial mask because it has a good feeling of use and a high skin condition improving effect can be easily obtained in a short time.

When the effervescent skin external preparation obtained by using the kit of the present invention is used as a pack agent, it may be applied to a thickness of 0.2 mm or more, preferably 0.5 mm or more so as to cover a desired site. By applying to a thickness of 0.2 mm or more, the effect of improving the skin condition by carbon dioxide can be obtained. The usage time may be 1 minute or longer, preferably 3 minutes or longer, and more preferably 5 minutes or longer. After the application is completed, it may be wiped off, rinsed with water or the like, or both.

Hereinafter, the present invention will be described in more detail with reference to examples, but the scope of the present invention is not limited to these examples. In each of the following Examples and Reference Examples, commercially available raw materials were used unless otherwise specified.

<Manufacturing of effervescent skin external preparation>
The kit of the present invention was produced according to the composition shown in Table 1.

Examples 1-8, Reference Examples 1-3
[First agent]
Purified water was added to the beaker, then the raw materials described in the first agent were added and stirred to obtain the first agent.
[Second agent]
Purified water was added to the beaker, then the raw material described in the second agent was added and stirred to obtain the second agent.

<Characteristic evaluation of effervescent skin external preparation>
The characteristics of the effervescent skin external preparations obtained in Examples 1 to 3 and Reference Examples 1 to 3 were evaluated according to the following procedure.
[Evaluation example 1. Evaluation of second agent viscosity]
In the second agent shown in Table 1, the viscosities of Examples 1 to 8 and Reference Examples 1 to 3 at 25 ° C. were measured using a viscometer (RVT type manufactured by Brookfield). Table 2 shows the viscosity results of the first agent, and Table 3 shows the viscosity measurement results of the second agent.

[Evaluation example 2. Skin condition measurement before and after use]
Effervescent skin external preparations were prepared using the kits of the present invention obtained in Examples 1 to 8 and Reference Examples 1 to 3, and the water content of the stratum corneum (measurement) before and after the use of the obtained effervescent skin external preparations. Equipment: SKION-200EX), water evaporation amount (measurement equipment: TewameterTM300), color difference (measurement equipment: color difference meter) and elasticity (measurement equipment: Cutometer MPA580) were measured.
The inside of the forearm of the subjects (two females in their thirties) was washed with a cleanser and rested for 15 minutes in the measurement room. Next, the measurement before using the effervescent skin external preparation was performed. Next, the effervescent skin external preparation, which was a 2: 1 mixture of the first agent and the second agent, was applied to the measurement site and allowed to stand for 10 minutes. Next, the effervescent external skin preparation was removed and wiped off with a lightly moistened cloth. After 15 minutes had passed after washing, the measurement was performed after using the effervescent skin external preparation. The subject spent a rest in the measurement room during the measurement.
Table 4 shows the results of skin condition measurement after use. Table 4 shows the measurement results of the water content of the stratum corneum, the water evaporation amount, the color difference and the elasticity. Table 4 shows the comparative values with 1 before the use of the effervescent skin external preparation. The larger the value, the better the skin is moisturized, the smaller the value, the better the barrier function, and the larger the value, the whiter the color. It indicates that the skin has become firmer, and the larger the value, the better the elasticity of the skin.

[Evaluation example 3. Evaluation of usability of effervescent skin external preparation]
Effervescent skin external preparations were prepared using the kits of the present invention obtained in Examples 1 to 8 and Reference Examples 1 to 3, and the table shows the time and after use of the obtained effervescent skin external preparations. 5. The items shown in Table 6 were evaluated.
First, the inside of the forearm of the subjects (two females in their thirties) was washed with a cleanser and spent 15 minutes at rest. Next, the effervescent skin external preparation, which was a 2: 1 mixture of the first agent and the second agent, was applied to the measurement site and allowed to stand for 10 minutes. Next, the effervescent external skin preparation was removed and wiped off with a lightly moistened cloth. After that, questionnaires were conducted on 8 items in Table 5 and 7 items in Table 6. The questionnaire was evaluated on a scale of 1 (very bad) to 7 (very good) for the following items, and the average score was calculated. The subject spent a rest in the measurement room during the measurement.

From Table 2, in Examples 1 to 8, the viscosity of the first agent is 500 mPa · s or more, and the viscosity of the second agent is 20,000 mPa · s or less. On the other hand, in Reference Examples 1 and 2, the viscosity of the first agent is 500 mPa · s or more, but the viscosity of the second agent is 20,000 mPa · s or more, and in Reference Example 3, the viscosity of the first agent is 500 mPa · s. Below, it can be seen that the viscosity of the second agent is 20,000 mPa · s or less.
From Table 4, the skin condition after use is as follows: Example 7> Example 5> Example 8> Example 6> Example 3> Example 4> Example 2> Example 1> Reference Good results were obtained in the order of Example 1> Reference Example 2> Reference Example 3, and the amount of water evaporation was Example 7> Example 3> Example 5> Example 4> Example 2> Example 6> Example 8. > Example 1> Reference Example 3> Reference Example 2> Reference Example 1 gives good results, and the color difference is Example 6> Example 8> Example 7> Example 5> Example 4> Example 3. > Example 2> Example 1> Reference Example 2> Reference Example 1> Reference Example 3 in this order, good results were obtained, and the elasticity was shown in Example 6> Example 8> Example 4> Example 5> Example 7. Good results were obtained in the order of> Example 3> Example 1> Example 2> Reference Example 1> Reference Example 3> Reference Example 2. That is, it was found that Examples 1 to 8 are more effective in improving the condition after use than Reference Examples 1 to 3, and in particular, Examples 3 to 8 in which two or more kinds of polyhydric alcohols are mixed with the second agent are described. It can be seen that the effect is high, that is, the skin is kept fresh, the barrier function is set, and the skin becomes white and firm.
Further, from Table 5, it can be seen that the effervescent skin external preparation obtained by using the kit of the present invention is highly evaluated at the time of use as compared with Reference Examples 1 to 3. In particular, it can be seen that it is easy to mix when mixing the first agent and the second agent, it is easy to apply after mixing, it is hard to drip, and it is easy to peel off after use.
In addition, from Table 6, it is easy for the user to confirm the moist feeling, elasticity, brightening of the skin, redness of the skin, smoothness of the skin, smoothness, and tightness after use. It can be seen that it is easy to use and has a high effect on the skin.
From the above results, it can be seen that the effervescent skin external preparation obtained by using the kit of the present invention is easy for the user to use and has a high effect on the skin.

Specific prescription examples of the kit of the present invention are shown below. Both the first agent and the second agent can be produced by the same production method as that of Example 1 or by a general cosmetic production method.

Example 9

The effervescent skin external preparation kit was prepared in the same manner as in Example 1 according to the formulations shown in Table 7. The effervescent skin external preparation can be obtained by mixing the first agent and the second agent of the obtained kit in a ratio of 1: 1.

Example 10

The effervescent skin external preparation kit was prepared in the same manner as in Example 1 according to the formulations shown in Table 8. By mixing the first agent and the second agent of the obtained kit in a ratio of 3: 1, an effervescent skin external preparation can be obtained.

Example 11

The effervescent skin external preparation kit was prepared in the same manner as in Example 1 according to the formulations shown in Table 9. The effervescent skin external preparation can be obtained by mixing the first agent and the second agent of the obtained kit in a ratio of 1: 1.

Example 12

The effervescent skin external preparation kit was prepared in the same manner as in Example 1 according to the formulations shown in Table 10. The effervescent skin external preparation can be obtained by mixing the first agent and the second agent of the obtained kit in a ratio of 2: 1.

As is clear from the above studies, the kit of the present invention is easy to mix uniformly, and has the effect of evenly generating carbon dioxide gas during use. Furthermore, it can be seen that the use of the effervescent skin external preparation obtained by using the kit of the present invention has the effect of keeping the skin fresh, having a barrier function, and obtaining white and firm skin.

Claims (1)

A kit for obtaining an effervescent skin external preparation, which contains a carbon dioxide gas generating substance, an acid, a gelling agent, a polyhydric alcohol and water, and has a viscosity of the first agent of 5200 to 430300 mPa · s, and a second agent. A kit characterized in that the viscosity of the agent is 2740 mPa · s or less in either form (A) or (B).
(A) The first agent is a composition containing a carbon dioxide generating substance, a gelling agent and water, and the second agent is a liquid composition containing an acid, water and a polyhydric alcohol and not containing a thickener. ..
(B) The first agent is a composition containing an acid, a gelling agent and water, and the second agent is a liquid composition containing a carbon dioxide gas generating substance, water and a polyhydric alcohol and not containing a thickener. ..