JP2013213013A - Foamable skin external preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foamable skin external preparation capable of satisfying all the two effects of the increase in a skin blood flow and the rise in a corneum moisture content on a high order.SOLUTION: A foamable skin external preparation being a two agent type is composed of a viscous composition and acid granules, and the viscous composition and the acid granules are mixed upon use. The viscous composition at least includes a carbonate, a pine bark extract, an ice plant extract and a soybean ceramide extract, and the acid granules at least include an acid substance reacted with the carbonate and producing foaming.

Description

  The present invention relates to a two-part foaming skin external preparation in which carbonate and acid are mixed at the time of use.

  Conventionally, for the purpose of beauty, a gel type foaming skin external preparation (carbonic acid gel pack) that is used by mixing carbonate and acid in the presence of water and generating carbon dioxide gas has been proposed (for example, Patent Document 1). However, the existing carbonic acid gel pack has a problem that the effect of increasing the skin blood flow is not always sufficient.

  On the other hand, it is known that proanthocyanidins contained in the pine bark extract have an effect of improving skin blood flow (see, for example, Patent Document 2). It is not clear whether the pine bark extract can be blended with the carbonic acid gel pack to achieve the desired effect, and further whether the desired performance as the carbonic acid gel pack can be obtained.

  Furthermore, there is a need to effectively increase the “amount of stratum corneum moisture” resulting from freshness of the skin in the foamable external preparation for skin. However, the existing carbonic acid gel pack has a problem that the effect of increasing the stratum corneum moisture content is not always sufficient.

  Therefore, at present, there is a strong demand for prompt provision of an external preparation for foaming skin that can achieve both the high effects of the two effects of increasing skin blood flow and increasing stratum corneum moisture.

Japanese Patent No. 4659980 JP 2004-123622 A

  An object of the present invention is to solve the conventional problems and achieve the following objects. That is, an object of the present invention is to provide an effervescent skin external preparation capable of achieving both the high effects of the two effects of increasing the skin blood flow rate and increasing the stratum corneum moisture content.

  In order to solve the above-mentioned problems, the present inventors have made extensive studies and as a result, obtained the following findings. That is, a two-part foaming skin external preparation comprising a viscous composition and acidic granules and mixing the viscous composition and acidic granules at the time of use, wherein the viscous composition comprises carbonate, pine bark When using an effervescent skin external preparation containing at least an extract, an ice plant extract, and a soybean ceramide extract, and the acidic granules contain at least an acidic substance that reacts with the carbonate to cause foaming, It has been found that the two effects of an increase in blood flow and an increase in stratum corneum moisture can be achieved at a high order.

The present invention is based on the above knowledge, and means for solving the above problems are as follows. That is,
<1> A two-part foaming skin external preparation comprising a viscous composition and acidic granules, wherein the viscous composition and acidic granules are mixed at the time of use, wherein the viscous composition comprises carbonate, pine A foaming skin external application comprising at least a bark extract, an ice plant extract, and a soybean ceramide extract, wherein the acidic granule contains at least an acidic substance that reacts with the carbonate to cause foaming. It is an agent.
<2> The foamable skin external preparation according to <1>, wherein a mixing mass ratio of the viscous composition and acidic granules (viscous composition: acidic granules) in use is 10: 1 to 20: 1. .
<3> The carbonate content in the viscous composition is 1% by mass or more and 5% by mass or less, the content of the pine bark extract is more than 0 and 0.15% by mass or less, and the ice plant extract is contained. The foamable skin external preparation according to any one of <1> to <2>, wherein the amount is more than 0 and 0.15% by mass or less, and the content of the soybean ceramide extract is more than 0 and 0.15% by mass or less. It is.
<4> The foamable external preparation for skin according to any one of <1> to <3>, wherein the viscosity of the viscous composition is 45,000 mPa · s to 135,000 mPa · s when measured at a shear rate of 5 rpm. It is.
<5> The foamable skin external preparation according to any one of <1> to <4>, wherein the acidic granule is produced by extrusion granulation.

  ADVANTAGE OF THE INVENTION According to this invention, the said various problems in the past can be solved, and the foamable skin external preparation which can make compatible the two effects of the increase in skin blood flow rate and a raise of a stratum corneum water content in higher order can be provided. .

(Foamable external preparation for skin)
The foamable skin external preparation of the present invention is a two-part foamable skin external preparation in which a viscous composition and acidic granules are mixed at the time of use, and may further contain other components as necessary.

<Viscous composition>
The viscous composition preferably contains at least a carbonate, a pine bark extract, an ice plant extract, and a soybean ceramide extract, and further contains a thickener and water.

-Carbonate-
The carbonate is not particularly limited as long as it is a carbonate that reacts with an acidic substance contained in the acidic granule to generate carbon dioxide, and can be appropriately selected according to the purpose. Ammonium, ammonium bicarbonate, potassium carbonate, potassium bicarbonate, potassium sesquicarbonate, sodium carbonate, sodium bicarbonate, sodium bicarbonate, sodium sesquicarbonate, lithium carbonate, lithium bicarbonate, lithium sesquicarbonate, cesium carbonate, cesium bicarbonate, Examples include cesium carbonate, magnesium carbonate, magnesium hydrogen carbonate, calcium hydrogen carbonate, magnesium carbonate hydroxide, and barium carbonate. These may be used individually by 1 type and may use 2 or more types together. Among these, sodium hydrogen carbonate is preferable.

  There is no restriction | limiting in particular as content with respect to the said viscous composition of the said carbonate, Although it can select suitably according to the objective, 1 mass% or more and 5 mass% or less are preferable. When the content is less than 1% by mass, the amount of carbonic acid generated is reduced, and the effect obtained by carbonation may not be sufficiently exhibited. When the content exceeds 5% by mass, the product appearance is precipitated over time. Not only will it get worse, it may make it difficult to work at the time of preparation.

-Pine bark extract-
The pine bark extract contains proanthocyanidins as an active ingredient. The proanthocyanidins are a group of compounds composed of a condensation polymer having a degree of polymerization of 2 or more having flavan-3-ol and / or flavan-3,4-diol as a structural unit, and as a powerful antioxidant produced by plants. Are known.

The pine bark extract is not particularly limited as long as it is an extract containing pine bark, and can be appropriately selected according to the purpose. For example, French pine ( Pinus Martina ), black pine ( Pinus thunbergii ) ), Japanese red pine (Pinus densiflora), Himekomatsu (Pinus parviflora), pine (Pinus parviflora), Korean pine (Pinus koraiensis), stone pine (Pinus pumila), Ryukyu pine (Pinus luchuensis), Utsukushimatsu (Pinus densiflora f. umbraculifera), Pinus palustris (Pinus palustris), white pine (Pinus bungeana , Like extracts containing bark of pine, such as larch (Larix kaempferi). Among these, an extract containing bark of French coastal pine is preferable.

  The extraction method of the pine bark is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a warm extraction method and a supercritical fluid extraction method. The extraction solvent is not particularly limited. And can be appropriately selected according to the purpose, for example, water such as warm water or hot water; methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, butane, acetone, hexane, cyclohexane , Propylene glycol, water-containing ethanol, water-containing propylene glycol, and other organic solvents that are acceptable for the production of foods or drugs; water, ethanol, and water-containing ethanol are preferred.

  The pine bark extract is not particularly limited and can be appropriately selected according to the purpose.For example, the extract obtained by the above extraction method is concentrated, eluted, dried, etc. by a known method, Although an extract prepared in a liquid form, a paste form, a powder, or the like may be used, it is preferable to use a commercially available pine bark extract manufactured by Toyo Shinyaku Co., Ltd.

  There is no restriction | limiting in particular as content with respect to the said viscous composition of the said pine bark extract, Although it can select suitably according to the objective, 0.2 mass% or less is preferable, and more than 0 0.15 mass% or less Is more preferable, and 0.01% by mass or more and 0.15% by mass or less is particularly preferable.

-Ice plant extract-
The ice plant is a plant called Mesembryanthema crystallinum , which belongs to the genus Mesembriantem, and “ice plant” is a Japanese name of this species. The ice plant is native to Europe, West Asia and Africa, and is a kind of halophyte with high salt tolerance having cells for sequestering salt in the epidermis.

  The ice plant extract is not particularly limited as long as it is an extract containing the ice plant, and can be appropriately selected according to the purpose. For example, Barafu (registered trademark: Nokendo Co., Ltd.), Crystal Extracts of ice plants such as Leaf (Registered Trademark: Nokendo Co., Ltd.), Puccina (Registered Trademark: Agri Corporation), Tubulina (Registered Trademark: Nihon Advanced Agri Corporation), Saltina, Siona and the like can be mentioned. Among these, the extract of Barafu (registered trademark: Nakkendo Co., Ltd.) is preferable.

  The ice plant extraction method is not particularly limited and may be appropriately selected according to the purpose. Examples thereof include a warm extraction method and a supercritical fluid extraction method. The extraction site is not particularly limited. However, the above-ground part (parts located above the ground surface (leaves, stems, etc.)) is preferable, and the extraction solvent is not particularly limited and is appropriately determined according to the purpose. For example, water such as warm water, hot water; methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, butane, acetone, hexane, cyclohexane, propylene glycol, water-containing ethanol, Organic solvents that are acceptable for the production of food or drugs such as water-containing propylene glycol; water, ethanol, water-containing ethanol Preferred.

  The ice plant extract is not particularly limited and can be appropriately selected according to the purpose.For example, the extract obtained by the extraction method is concentrated, eluted, dried, etc. by a known method, You may use the extract prepared in the liquid form, the paste form, the powder, etc.

  There is no restriction | limiting in particular as content with respect to the said viscous composition of the said ice plant extract, Although it can select suitably according to the objective, 0.2 mass% or less is preferable, and more than 0 0.15 mass% or less Is more preferable, and 0.01% by mass or more and 0.15% by mass or less is particularly preferable.

-Soybean ceramide extract-
The soy ceramide extract is not particularly limited as long as it is a soy extract containing a ceramide-like substance, and can be appropriately selected according to the purpose. , Soy ceramide extract using soybeans such as tamahomare, toyokomachi, oosuzu and toyosumume.

  There is no restriction | limiting in particular as a manufacturing method of the said soybean ceramide extract, According to the objective, it can select suitably, For example, the method etc. which extract and manufacture soybean ceramide with an extraction solvent are mentioned. There is no restriction | limiting in particular as said extraction solvent, According to the objective, it can select suitably, For example, water, such as warm water and hot water; Methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2- Examples include organic solvents acceptable for the production of foods or drugs such as butanol, butane, acetone, hexane, cyclohexane, propylene glycol, water-containing ethanol, water-containing propylene glycol, and the like. Among these, water, ethanol, and hydrous ethanol are preferable.

  The soybean ceramide extract is not particularly limited and can be appropriately selected according to the purpose.For example, the extract obtained by the above production method is concentrated, eluted, dried, etc. by a known method, An extract prepared in a liquid form, paste form, powder or the like may be used, but it is preferable to use soybean ceramide manufactured by Toyo Shinyaku Co., Ltd., which is a commercial product.

  There is no restriction | limiting in particular as content with respect to the said viscous composition of the said soybean ceramide extract, Although it can select suitably according to the objective, 0.2 mass% or less is preferable, and more than 0 0.15 mass% or less Is more preferable, and 0.01% by mass or more and 0.15% by mass or less is particularly preferable.

-Thickener-
The thickener is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include carrageenan and xanthan gum. These may be used individually by 1 type and may use 2 or more types together.

  There is no restriction | limiting in particular as total content which occupies for the said viscosity composition of the said thickener, Although it can select suitably according to the objective, 0.5 mass% or more is preferable. When the content of the thickener is less than 0.5% by mass, the viscosity of the viscous composition is lowered, and the gel pack of carbonic acid drips when applied to the skin, which may reduce the product value.

-Water-
The water is not particularly limited as long as it is usually used for cosmetics, pharmaceuticals, and the like, and can be appropriately selected according to the purpose. Examples thereof include distilled water, membrane filtered water, and ion-exchanged water. It is done. These may be used individually by 1 type and may use 2 or more types together.

  The total content of the water in the viscous composition is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 30% by mass or more, more preferably 50% by mass or more and 98% by mass or less. 60 mass% or more and 95 mass% or less is still more preferable. If the water content is less than 30% by mass, the viscosity of the viscous composition may be too high, resulting in lack of fluidity, flexibility, and the like. Therefore, the viscosity is lowered and the gel pack is dripped when applied to the skin, which may reduce the product value.

-Method for preparing viscous composition-
The method for preparing the viscous composition is not particularly limited and may be appropriately selected depending on the purpose. For example, the solution containing the carbonate and the water, and the pine bark extract and the ice plant extraction And a method of mixing a solution containing the product, the soybean ceramide extract and water.

  There is no restriction | limiting in particular as a shape of the said viscous composition, According to the objective, it can select suitably, For example, a gel form, a slurry form, etc. are mentioned. Among these, a gel shape is preferable in that it can ensure flexibility when used as an external preparation for skin (excellent feeling in use).

  The viscosity of the viscous composition is not particularly limited and may be appropriately selected depending on the intended purpose. The viscosity when measured at a shear rate of 5 rpm is preferably from 45,000 mPa · s to 135,000 mPa · s. 60,000 mPa · s to 120,000 mPa · s is more preferable. The viscosity can be calculated by measuring with a Brookfield viscometer at 25 ° C.

<Acid granules>
The acidic granule of the present invention is an acidic granule that is mixed with the viscous composition when the foamable skin external preparation is used, and includes at least an acidic substance and may include a granulating agent.

-Acidic substances-
The acidic substance is not particularly limited as long as it is an acidic substance that reacts with the carbonate to generate foam (carbon dioxide), and can be appropriately selected according to the purpose. For example, ascorbic acid, citric acid , Malic acid, succinic acid and the like. These may be used individually by 1 type and may use 2 or more types together. Among these, ascorbic acid and citric acid are preferable.

  There is no restriction | limiting in particular as content with respect to the said acidic granule of the said acidic substance, Although it can select suitably according to the objective, 45 mass% or more is preferable at the point of foaming amount, 65 mass% or more and 85 mass%. The following is more preferable.

-Granulating agent-
There is no restriction | limiting in particular as said granulating agent, According to the objective, it can select suitably, For example, powders, such as lactose, powdered sugar, starch, etc. are mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, lactose is preferable.

  There is no restriction | limiting in particular as content with respect to the said acidic granule of the said granulating agent, Although it can select suitably according to the objective, 55 mass% or less is preferable at the point of foaming amount, 15 mass% or more and 35 mass% % Or less is more preferable.

-Method for producing acidic granules-
There is no restriction | limiting in particular as a manufacturing method of the said acidic granule, According to the objective, it can select suitably, For example, the method etc. which mix the said acidic substance and the said granulating agent, and manufacture by extrusion granulation etc. are mentioned. It is done.

  The shape of the acidic granule is not particularly limited and can be appropriately selected according to the bulk density, fluidity, moldability, and the like. For example, it is not only granular, but also powder, fine particles, and irregular shapes. , Planar shape, multi-faceted shape, spherical shape, drop shape, fibrous shape, cylindrical shape, and the like.

<Other ingredients>
The other component is not particularly limited as long as it is a component used in cosmetics and the like, and can be appropriately selected according to the purpose. For example, a surfactant, a pH adjuster, an antiseptic, a fragrance, and a moisturizer. , Ultraviolet absorbers, dyes, antioxidants and the like. These may be used individually by 1 type and may use 2 or more types together.

<Usage form of effervescent skin external preparation>
There is no restriction | limiting in particular as a usage form of the said foamable skin external preparation, According to the objective, it can select suitably, For example, the said viscous composition and the said acidic granule are mixed and foamed at the time of use, and skin The form etc. which are used by making it apply to are mentioned.

  The mixing mass ratio between the viscous composition and the acidic granules (viscous composition: acidic granules) at the time of using the foamable skin external preparation is not particularly limited and can be appropriately selected according to the purpose. From the viewpoint of mixing (dispersibility), 10: 1 to 20: 1 is preferable.

  The method for mixing the viscous composition and the acidic granule in the foamable external preparation for skin is not particularly limited and can be appropriately selected according to the purpose.For example, using a spatula, a spatula, a palm, Examples thereof include a method of mixing in a container such as glass and plastic, a method of mixing on the skin such as the palm, and the like, and a method of mixing to such an extent that the acidic granules (powder) do not disappear visually is preferable.

  There is no restriction | limiting in particular as the usage method of the said foamable skin external preparation, Although it can select suitably according to the objective, The method etc. which leave it for 1 to 30 minutes after applying to skin etc. are preferable. Since the foamable skin external preparation continues to stay on the skin without dripping down, when used at home instead of a salon, etc., while applying the foamable skin external preparation to the skin, etc. Simple daily operations can be performed.

  The storage form of the viscous composition and the acidic granules in the foamable external preparation for skin is not particularly limited as long as the viscous composition and the acidic granules are stored in a non-contact state, depending on the purpose. Although it can select suitably, the form which preserve | saves the said viscous composition and the said acidic granule in each storage container in the sealed state is preferable.

There is no restriction | limiting in particular as a shape of the storage container of the said viscous composition and the said acidic granule in the said foamable skin external preparation, According to the objective, it can select suitably, Cup shape, tube shape, bag shape, bottle shape , Stick shape, pump shape and the like.
There is no restriction | limiting in particular as a magnitude | size of the storage container of the said viscous composition in the said effervescent skin external preparation, and the said acidic granule, According to the objective, it can select suitably.
Examples of the material for the storage container for the viscous composition and the acidic granules in the foamable external preparation for skin include plastics, glass, aluminum, paper, and various polymers. These may be used individually by 1 type and may use 2 or more types together.

  Specific examples of the storage container for the viscous composition and the acidic granules in the foamable external preparation for skin are not particularly limited and may be appropriately selected depending on the intended purpose. However, hermeticity, storage stability of contents Storage container made of polyethylene terephthalate such as aluminum stick laminated on inner surface with polyethylene terephthalate, aluminum back, etc. in terms of production cost, etc .; Storage made of polyethylene terephthalate with lid sealed with aluminum film laminated on inner surface with polyethylene terephthalate Containers are preferred.

<Use of foaming skin external preparation>
The effervescent skin external preparation of the present invention can achieve the two effects of increasing skin blood flow and increasing stratum corneum water content at a higher order, such as lotions, emulsions, creams, packs, peeling agents, etc. It can be suitably used not only for cosmetics but also for quasi-drugs such as hair agents, cleaning agents, bathing agents, and pharmaceuticals.

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

(Example 1: Preparation of foamable skin external preparation 1)
According to the composition shown in Table 1-1, a foamable skin external preparation 1 was produced.
The viscous composition was prepared by dissolving a thickener (carrageenan, xanthan gum) having the composition described in Table 1-1 in warm water and cooling to room temperature, and then adding the carbonate having the composition described in Table 1-1 to this solution. A solution prepared by dissolving a pine bark extract, an ice plant extract, and a soybean ceramide extract with water was prepared.
The acidic granule is obtained by dispersing an acidic substance having the composition shown in Table 1-1 and a granulating agent in 3% by mass to 5% by mass of water-containing ethanol, and then extruding granulator (manufactured by Hata Plant). Granular grains were obtained. In addition, the viscous composition and acidic granule in an effervescent skin external preparation were mixed with a spatula until the viscous composition and acidic granule were visually mixed evenly just before use. Table 1-2 shows the names of commercial products used for each component.

(Comparative Example 1: Preparation of comparative foaming skin external preparation 1)
In Example 1, comparative foamable skin external preparation 1 was produced in the same manner as Example 1 except that the ice plant extract and the soybean ceramide extract were not used. In addition, the viscous composition and acidic granule in an effervescent skin external preparation were mixed with a spatula until the viscous composition and acidic granule were visually mixed evenly just before use. The composition of the viscous composition and acidic granule of Comparative Example 1 is shown in Table 1-1, and the commercial product names of the components used are shown in Table 1-2.

(Comparative Example 2: Preparation of comparative foaming skin external preparation 2)
In Example 1, comparative foamable skin external preparation 2 was produced in the same manner as in Example 1 except that the pine bark extract, ice plant extract, and soybean ceramide extract were not used. In addition, the viscous composition and acidic granule in an effervescent skin external preparation were mixed with a spatula until the viscous composition and acidic granule were visually mixed evenly just before use. The composition of the viscous composition and acidic granule of Comparative Example 2 is shown in Table 1-1, and the commercial product names of the components used are shown in Table 1-2.

(Test Example 1: Measurement of skin blood flow)
In Test Example 1, a test was performed to compare the increase in skin blood flow using the foamable external preparation for skin prepared in Examples and Comparative Examples. The measurement method and measurement result of skin blood flow are shown below.

-Measurement method-
Measurement item: Skin blood flow measurement device: Laser Doppler blood flow imaging device
(PeriScan PIM3, manufactured by PERIMED)
Subjects: 4 females in their 20s (average age 26.3 ± 4.1 years)
Measurement site: Middle finger application amount on the left hand: Appropriate amount (amount covering the entire palm of the left hand)
Test article: Foamable skin external preparation 1 (Example 1)
: Comparative foaming skin external preparation 1 (Comparative Example 1)
: Comparative foaming skin external preparation 2 (Comparative Example 2)
Measurement procedure:
(1) The forearm was washed with a face wash.
(2) In a sealed room, rest and acclimatize for 15 minutes.
(3) The blood flow rate of the middle finger of the left hand before application was measured.
(4) The test product was applied to the entire palm of the left hand with a spatula and rested for 20 minutes in the applied state.
(5) After the application time, the test product was removed with a spatula so as not to irritate the finger as much as possible, and the blood flow volume of the middle finger on the left hand after application was measured.

-Measurement results-
The measurement results of Test Example 1 are shown in Table 2.

  In addition, since the temperature of the applied reagent product was low, the blood flow after application was lower in each measurement than before application. Then, the change value of the foamable skin external preparation 1 and the comparative foamable skin external preparation 1 was examined on the basis of the change value before and after the application of the comparative foamable skin external preparation 2 as a control. As a result, it was shown that the blood flow rate was increased to +41.5 in the foamable skin external preparation 1, and +6.9 in the comparative foamable skin external preparation 1, compared to the comparative foamable skin external preparation 2 as a control. It was. From the above, it was found from Test Example 1 that the skin blood flow rate was significantly increased by using the foamable skin external preparation of the present invention.

(Test Example 2: Measurement of stratum corneum moisture content)
In Test Example 2, a test for comparing the increase in the amount of moisture in the stratum corneum was performed using the foamable skin external preparations produced in Examples and Comparative Examples. The measurement method and measurement result of the stratum corneum moisture content are shown below.

-Measurement method-
Measurement item: stratum corneum moisture measuring device: SKICON-200EX
Subjects: 4 females in their 20s (average age 26.3 ± 4.1 years)
Measurement site: 4 cm × 4 cm range inside the left forearm Application amount: appropriate amount (amount covering 4 cm × 4 cm range)
Test article: Foamable skin external preparation 1 (Example 1)
: Comparative foaming skin external preparation 1 (Comparative Example 1)
: Comparative foaming skin external preparation 2 (Comparative Example 2)
Measurement procedure:
(1) The forearm was washed with a face wash.
(2) In a sealed room, rest and acclimatize for 15 minutes.
(3) The moisture content inside the left forearm (4 cm × 4 cm) before application was measured.
(4) The test product was applied to the inside of the left forearm (4 cm × 4 cm) with a spatula, and rested for 20 minutes in the applied state.
(5) After completion of the application time, the test product was removed with a spatula so that the skin was not stimulated as much as possible, and the inner left forearm (4 cm × 4 cm) was washed with water.
(6) After washing, the sample was acclimated for 15 minutes, and the water content after application (inner left forearm) was measured.
* Moisture content: If the value was not stable during the measurement, it was measured at least 7 times (odd times). In addition, the average value of the median values (values at five points excluding the upper limit value and the lower limit value when measured 7 times) excluding the upper limit value and the lower limit value of the obtained measurement values is the measured value. It was.

-Measurement results-
The measurement results of Test Example 2 are shown in Table 3.

  From Test Example 2, it was found that the moisture content of the stratum corneum was significantly increased by using the foamable skin external preparation of the present invention.

  Compared to the comparative effervescent skin external preparation 1 containing carbonate and pine bark extract, the effervescent skin external preparation 1 of the present invention further containing an ice plant extract and soybean ceramide extract is more stratum corneum. The effect of increasing the amount of water was remarkably excellent. Moreover, in the foamable skin external preparation 1 of the present invention, an unexpected result was obtained that the effect of increasing the skin blood flow rate was more remarkable than that of the comparative foamable skin external preparation 1. The effervescent skin external preparation 1 of the present invention is capable of achieving the two effects of increasing the skin blood flow rate and increasing the stratum corneum water content at a higher order, which is a remarkable advantage that cannot be achieved by the comparative effervescent skin external preparation 1. Had the effect.

  Since the foamable external preparation for skin of the present invention can achieve the two effects of increasing the skin blood flow and increasing the stratum corneum water content at a high order, only cosmetics such as lotions, emulsions, creams, packs, peeling agents, etc. In addition, it can be suitably used for any of quasi-drugs such as hair preparations, cleaning agents, bath preparations, and pharmaceuticals.

Claims (5)

A two-part foaming skin external preparation comprising a viscous composition and acidic granules, wherein the viscous composition and acidic granules are mixed at the time of use,
The viscous composition contains at least a carbonate, a pine bark extract, an ice plant extract, and a soybean ceramide extract,
The foamable external preparation for skin, wherein the acidic granule contains at least an acidic substance that reacts with the carbonate to cause foaming.   The foamable skin external preparation according to claim 1, wherein a mixing mass ratio of the viscous composition and acidic granules (viscous composition: acidic granules) in use is 10: 1 to 20: 1. In viscous compositions,
The carbonate content is 1% by mass or more and 5% by mass or less,
The content of the pine bark extract is more than 0 and 0.15% by mass or less,
The content of the ice plant extract is more than 0 and 0.15% by mass or less,
The foamable skin external preparation according to any one of claims 1 to 2, wherein the content of the soybean ceramide extract is more than 0 and 0.15% by mass or less.   The foamable skin external preparation according to any one of claims 1 to 3, wherein the viscosity of the viscous composition when measured at a shear rate of 5 rpm is from 45,000 mPa · s to 135,000 mPa · s.   The foamable external preparation for skin according to any one of claims 1 to 4, wherein the acidic granules are produced by extrusion granulation.