JP2016193890A - Effervescent external preparation for skin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide effervescent external preparations for skin that quickly form a moderately viscous gel, have a high visual effect due to a quick generation of carbonic acid gas, and have a good feeling of use due to the cracking feeling of carbonic acid gas even when applying to the skin, in effervescent external preparation for skin which is mixed at the time of use to generate carbonic acid gas.SOLUTION: An effervescent external preparation for skin which is mixed at the time of use and generates carbonic acid gas comprises absorptive resin particles, is separated into a first agent containing at least basic carbonate and a second agent containing an acidic substance, and is mixed at the time of use to be prepared.SELECTED DRAWING: None

Description

  The present invention relates to a foamable external preparation for skin that generates carbon dioxide by mixing at the time of use. A gel is easily formed when mixed with an aqueous solvent, and carbon dioxide is rapidly generated. The present invention relates to an effervescent skin external preparation that is excellent in sustainability of carbon dioxide gas supply and has a high actual effect because of its good cracking feeling (feeling of falling out after generation of bubbles, a feeling of popping) and its sustainability.

  Conventionally, carbon dioxide gas has been known to have a beauty and medical effect by improving blood circulation and activating metabolism, and is used in cosmetics such as bathing agents or packs and masks. Many of these generate carbon dioxide by the reaction of an acidic substance and a carbon dioxide generating substance in an aqueous solvent, but there is also a visual effect. Has been. From the viewpoint of maintaining the generated carbon dioxide in the external preparation for skin for a long time, a technique for imparting viscosity to the external preparation for skin has been studied. Examples include those containing a molecular thickener (for example, see Patent Documents 1 to 3), and those using a coating of a polyvalent metal salt of alginic acid (for example, see Patent Document 4).

  However, those using minerals are viscous substances that easily escape gas, and carbon dioxide cannot be retained for a long time, and a rough feel remains. In addition, when using a water-soluble polymer as a thickener, lumps occur during mixing and it takes time for gelation, and when swollen in advance, the generation of carbon dioxide gas is slow and the visual presentation effect is low. Since water-soluble polymer gels are easily affected by stress, heat, and the like, dripping may occur when used as a skin external preparation. In addition, those using a coating of a polyvalent metal salt of alginic acid are not only slow in generating carbon dioxide gas, but also are viscous substances that trap air bubbles, resulting in a lack of cracking feeling and a feeling of use that is prickly. There was no real feeling that carbon dioxide gas was being supplied, and the visual production was not satisfactory.

JP 2007-262083 A Japanese Patent No. 5039243 JP 2009-91365 A JP 2003-089615 A

  Therefore, in the present invention, in the foamable external preparation for skin that is mixed at the time of use to generate carbon dioxide, a gel with an appropriate viscosity is quickly formed, and since the carbon dioxide is generated quickly, the visual effect is high and applied to the skin. At the same time, it is an object of the present invention to provide an effervescent skin external preparation having a good feeling of use due to the cracking feeling of carbon dioxide gas.

  In such a situation, the present inventor has conducted extensive research to solve the above problems, and as a result, the foamable external preparation for generating carbon dioxide can contain the water-absorbing resin particles to solve the above problems. The headline and the present invention were completed. Furthermore, it has been found that a foaming skin external preparation having both an actual effect and good usability can be obtained by maintaining an appropriate cracking feeling of carbon dioxide gas.

  That is, the present invention is a foamable skin external preparation containing water-absorbing resin particles and generating carbon dioxide gas by mixing at the time of use, comprising at least a first agent containing a basic carbonate and an acidic substance The present invention relates to a foamable external preparation for skin that is separated into a second agent and is prepared by mixing at the time of use.

  In the present invention, mixing at the time of use is easy, and a gel having an appropriate viscosity is quickly formed. In addition, since carbon dioxide is generated quickly, the visual effect is high, the cracking feeling and its sustainability are felt well, and the feeling of use is also excellent, and the actual effect as a carbon dioxide foaming skin external preparation is also high. is there. Therefore, it is highly practical as an errand mixed type carbonic acid pack.

Hereinafter, the present invention will be described in detail.
Foaming in the foamable external preparation of the present invention is to generate carbon dioxide gas by reacting an acidic substance with a basic carbonate in an aqueous solvent. In the present invention, “cracking feeling” refers to a state in which foaming gradually occurs in a viscous liquid such as cracking foam, and the foam formed by the foaming makes a sound and spontaneously breaks. It can produce an exhilarating feeling or the like depending on the touch and the interestingness of the sound.

The acidic substance used in the present invention may be any of an organic acid, an inorganic acid, a salt thereof, or a derivative thereof that dissolves in water and exhibits acidity, and one or more of these are used.
Organic acids include linear fatty acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid, maleic acid, phthalic acid, isophthalic acid Acids, dicarboxylic acids such as terephthalic acid, acidic amino acids such as glutamic acid and aspartic acid, glycolic acid, malic acid, tartaric acid, citric acid, lactic acid, hydroxyacrylic acid, α-oxybutyric acid, glyceric acid, tartronic acid, salicylic acid, gallic acid And oxyacids such as tropic acid, ascorbic acid and gluconic acid. Of these, citric acid, ascorbic acid, malic acid, and succinic acid are preferable from the viewpoints of safety and solubility in water.
Examples of the inorganic acid include phosphoric acid, hydrochloric acid, sulfuric acid, nitric acid and the like. Of these, phosphoric acid and hydrochloric acid are preferable from the viewpoint of safety and solubility in water.

  The content of the acidic substance in the present invention is preferably 0.05 to 1.5% by mass (hereinafter abbreviated as%), more preferably 0.1 to 1%, based on the entire external preparation for skin. Within this range, a sufficient amount of carbon dioxide gas is generated to give a feeling of cracking, and gel formation is not hindered, so that a foamable skin external preparation excellent in usability and actual effect can be obtained.

Although it does not specifically limit as basic carbonate used for this invention, Powdery forms, such as a granular form and a powder form, are preferable among a solid form from a soluble viewpoint.
Basic carbonates include carbonates such as sodium carbonate, calcium carbonate, potassium carbonate, magnesium carbonate, sodium sesquicarbonate, ammonium hydrogen carbonate, potassium hydrogen carbonate, sodium hydrogen carbonate, lithium hydrogen carbonate, cesium hydrogen carbonate, magnesium hydrogen carbonate And bicarbonates such as calcium bicarbonate, and one or more of these are used. Among these, hydrogencarbonate is preferably used, and sodium hydrogencarbonate is more preferable in that a moderate cracking feeling can be realized.

  The content of the basic carbonate in the present invention is preferably 0.05 to 3%, more preferably 0.2 to 2% with respect to the whole external preparation for skin. Within this range, a sufficient amount of carbon dioxide gas is generated to give a feeling of cracking, and gel formation is not hindered, so that a foamable skin external preparation excellent in usability and actual effect can be obtained.

  The aqueous solvent used in the present invention is not particularly limited as long as it contains at least water, and is not particularly limited, and is ordinary water, purified water, hot spring water, deep water, lavender water, rose water, orange flower. Examples thereof include water-distilled water derived from plants such as water, and one or more of them can be used. In addition to water, polyhydric alcohols such as 1,3-butylene glycol, dipropylene glycol, glycerin, propylene glycol, and polypropylene glycol, or polymers thereof, sugar alcohols such as sorbitol, maltitol, and glucose, and aqueous components such as lower alcohols Can be used.

  The content of the aqueous solvent in the present invention is preferably from 70 to 97.5%, more preferably from 75 to 95%, still more preferably from 80 to 95%, based on the entire external preparation for skin. Within this range, the generation of carbon dioxide gas and the formation of gel are performed quickly, and there is no dripping and good usability, and a foamable skin external preparation with a fresh feeling of use can be obtained.

  The water-absorbing resin particles used in the present invention are water-insoluble and highly water-absorbing resin particles, and have the property of instantly absorbing and swelling when in contact with water. A water absorption rate of about 400 to 1000 times its own weight is preferable, and it is preferable to use after adjusting the particle size to about 0.05 to 0.5 mm. In the present invention, the water-absorbent resin particles are mixed with an aqueous solvent to incorporate water into the crosslinked structure of the particles to form a gel. At the same time, the free acid salt and carbonate start to react, so carbon dioxide gas. Since the gel is a viscous material having an appropriate air escape structure, the generated gas is released to the outside of the gel while staying for a certain time, and a cracking feeling can be produced. On the other hand, a gel made of a water-soluble polymer or a coating of a polyvalent metal salt of alginic acid keeps bubbles in the gel structure, so that a cracking feeling cannot be obtained.

  The composition of the water-absorbent resin particles is not particularly limited, and preferred examples include cross-linked sodium polyacrylate and sodium starch acrylate graft copolymer. Examples of the cross-linked sodium polyacrylate include, for example, Sunfresh ST- 500DC and ST-500MPS (both manufactured by Sanyo Chemical Co., Ltd.) are available as commercial products. Examples of sodium starch acrylate graft copolymers include Sunfresh ST-100 and ST-100MPS (both manufactured by Sanyo Chemical Co., Ltd.). Is available as a commercial product. These water-absorbent resin particles can be used alone or in combination of two or more as required.

The content of the water-absorbent resin particles in the present invention is preferably 1.5 to 5% with respect to the entire external preparation for skin. If it is this range, a carbon dioxide gas will generate | occur | produce rapidly at the time of mixing, the sustainability of the cracking feeling is favorable, and sufficient effect is acquired also in use feelings, such as no dripping.
Moreover, as content of water with respect to a water-absorbent resin particle, 15-65 times amount is preferable, and if it is this range, the gel formation which is excellent in usability without dripping will be possible.

  In addition, the foamable external preparation of the present invention includes, as necessary, water-soluble polymers, oils, powders as components that are usually blended in cosmetics in addition to the above components, as long as the effects of the present invention are not impaired. Body, surfactant, moisturizer, saccharides, UV absorber, antioxidant, anti-fading agent, preservative, medicinal ingredients, stabilizers, pigments, fragrances, etc. should be added as appropriate to give various effects. Can do.

  The water-soluble polymer used in the present invention is not particularly limited as long as it is usually used in cosmetics, and the content thereof is not particularly limited, but it is difficult to cause lumps during mixing, and dripping during use. Is less than 0.5%, more preferably less than 0.2%, and even more preferably from the viewpoint of the resistance to generation of carbon dioxide, the speed of generation of carbon dioxide gas, and the sustainability of the feeling of cracking. Is less than 0.05%.

  The foamable skin external preparation of the present invention is not limited in the form of the composition for preparation as long as it generates carbon dioxide by mixing at the time of use and contains water-absorbent resin particles, but the effect of the present application From the viewpoint of exhibiting, it is preferable that water and the water-absorbent resin particles are mixed at the time of use. Preparation of the effervescent skin external preparation of the present invention is not particularly limited, it is a mixing action that is possible to the general consumer at home, etc., for example, put the composition for preparation in a container, if necessary It is possible by adding water and mixing manually with a spatula or the like.

  As the composition for the preparation, for example, at least a first agent containing a basic carbonate and a second agent containing an acidic substance are provided in a separated form, and the first agent or the second agent A form containing water-absorbing resin particles in at least one of the agents is preferred. An appropriate amount of water may be added when preparing the foamable skin external preparation, and the water may preferably be included in one of the first agent or the second agent that does not contain the water-absorbent resin particles. From the viewpoint of carbon dioxide generation rate and handling, a form separated into at least a first agent containing basic carbonate and water-absorbing resin particles and a second agent containing at least an acidic substance and water is preferable. In addition, the acidic substance, the basic carbonate, and the water-absorbing resin particles may be separated from each other, and may be mixed at the time of use including water.

  Although the manufacturing method of the composition for preparation is not particularly limited, for example, the powdered composition only needs to be able to uniformly mix the powdered acidic substance, basic carbonate, and water-absorbing resin particles with a mixer or the like. Moreover, a liquid composition melt | dissolves or disperse | distributes an acidic substance and purified water, for example in containers, such as a beaker. At this time, if necessary, purified water may be heated to promote dissolution. Moreover, you may add the component mix | blended with the appropriate normal cosmetics etc. to these as needed.

  The method for using the foamable external preparation for skin of the present invention is not particularly limited. For example, the powdery first agent and the liquid second agent are put in a container, and these are manually mixed with a spatula or the like. The aspect etc. which apply | coat to are taken.

Hereinafter, the present invention will be described in detail with reference to examples. Note that these do not limit the present invention.
Examples 1 to 8 and Comparative Examples 1 to 7: Two-pack carbonic acid packs Two-pack carbonic acid packs having the composition shown in Table 1 were prepared by the following production method, and for each sample, “carbon dioxide generation rate”, “ "Gel formation" and "sustainability of cracking feeling" were evaluated by the following evaluation methods, and the results are also shown in Table 1.

(Production method)
A. Ingredients (1) to (7) were uniformly mixed with a food processor to obtain agent A.
B. Ingredients (8) to (19) were mixed and dissolved uniformly to obtain agent B.
C. In the preparation of the carbonated pack, at the time of use, the A agent and the B agent were put into a 100 ml beaker and uniformly mixed by hand using a spatula.

(Evaluation Method 1) “Generation rate of carbon dioxide”
About the carbonic acid packs of the examples and comparative examples, the time until carbon dioxide gas is generated after mixing the two agents A and B (the bubbles formed by the gas may spontaneously break up while making a sound. Time until visually confirmed) was measured and judged according to the following criteria.
(Criteria)
(Judgment): (Evaluation)
○: Less than 2 minutes △: More than 2 minutes and less than 5 minutes ×: More than 5 minutes

(Evaluation Method 2) “Gel Formation”
About the carbonic acid pack of an Example and a comparative example, A and B two agents were mixed words, and time until it formed uniform gel (a grade which does not sag even if it apply | coats to a face) was determined in accordance with the following reference | standard.
(Criteria)
(Judgment): (Evaluation)
○: A uniform gel is formed immediately after mixing words. Δ: It takes 2 minutes or more to form a uniform gel, or the viscosity of the gel is low.

(Evaluation method 3) "Sustainability of cracking feeling"
Examples and Comparative Examples Carbonate packs were subjected to a use test by 20 panelists specializing in cosmetics evaluation. After each sample was mixed by each panel, the panel was used for 15 minutes on the forearm, and the sustainability of the cracking feeling during use (the persistence of the feeling of carbon dioxide gasping) was evaluated in five levels according to the following absolute evaluation criteria. The average value was calculated from the total score of all the panels of each sample, and judged according to the following three-step criteria.
(Absolute evaluation criteria)
(Score): (Evaluation)
5 points: Good 4 points: Slightly good 3 points: Normal 2 points: Slightly bad 1 point: Bad (three-step criteria)
(Judgment): (Average score)
○: Over 4 points △: Over 4 points 4 points or less ×: 2 points or less

(result)
As shown in Table 1, Examples 1 to 8 were excellent in all items of “carbon dioxide generation rate”, “gel formation”, and “sustainability of cracking feeling” during use. On the other hand, Comparative Example 1 containing no water-absorbent resin particles has no viscosity, so that carbon dioxide is generated quickly but is not persistent, and falls even when applied to the skin. Comparative Examples 2 and 3 using the water-soluble polymer described in place of the water-absorbent resin particles do not swell uniformly only by hand mixing with a spatula. Since carbon dioxide was not obtained, carbon dioxide was generated quickly but was not persistent. Comparative Example 4 using xanthan gum instead of the water-absorbent resin particles did not swell sufficiently only by hand mixing with a spatula and had low viscosity, resulting in inferior results in all items. In Comparative Example 5 in which the acrylic acid / alkyl acrylate (C10-30) copolymer was contained in a swollen state in advance, an acidic substance was dissolved in the water-soluble polymer, so that the reaction with the basic carbonate was delayed. As the reaction progressed, the viscosity of the carbonic acid salt was lost as the reaction proceeded, and the cracking sensation did not last long. In Comparative Example 7 containing xanthan gum that had been swollen in advance, the generation of carbonic acid was similarly slowed down, and there were bubbles in the gel structure. The cracking feeling was not obtained.

Example 9: Impregnated sheet type carbonate pack (component)
(A agent) (%)
1. Sodium bicarbonate 1
2. Acrylic acid Na cross polymer (Note 1) 1
3. Sodium acrylate grafted starch (Note 2) 1
4). Nonwoven fabric (B agent)
5. PPG-9 Diglyceryl 2
6). Dipropylene glycol 10
7). Glycerin 8
8). Ascorbic acid 2-glucoside 1
9. Purified water remaining amount 10. PEG-8 3
11. PEG-60 hydrogenated castor oil 0.1
12 Ethanol 1
13. Pentaerythrityl tetraoctanoate 0.5
14 Fragrance 0.5
15. l-Menthol 0.1
16. Di (C12-15) Palace-8 Phosphate 0.1

(Production method)
A: Components (1) to (3) are uniformly mixed and dispersed.
B: A was applied to component (4) to obtain agent A.
C: Components (5) to (9) are uniformly dissolved.
D: Components (10) to (16) are uniformly dissolved.
E: D was uniformly mixed and dispersed in C and emulsified to obtain B agent.
F: The preparation of the impregnated sheet type carbonic acid pack was obtained by impregnating A into B agent at the time of use.

(result)
The impregnated sheet type carbonate pack of Example 9 was excellent in all items of “carbon dioxide gas generation rate”, “gel formation”, “cracking feeling”, and “carbon dioxide gas sustainability”.

Example 10: Carbonated pack (component)
(A agent) (%)
1. Sodium carbonate 1
2. Silica 0.2
3. Sodium acrylate graft starch (Note 2) 2
(B agent)
4). Polyoxyethylene glyceryl (26E.O.) 5
5. Diglycerin 0.1
6). Dipropylene glycol 10
7). Glycerin 8
8). Salicylic acid 0.5
9. Purified water remaining amount 10. PEG-8 3
11. Polyoxyethylene polyoxypropylene cetyl ether (20E.O.) (8P.O.) 0.1
12.1.3-Butylene glycol 5
13. Squalane 0.5

(Production method)
A: Components (1) to (3) are uniformly mixed and dispersed.
B: Components (4) to (9) are uniformly dissolved.
C: Components (10) to (13) are uniformly dissolved.
D: C was uniformly mixed and dispersed in B and emulsified to obtain B agent.
E: Carbonate packs were prepared by swelling agent A into agent B at the time of use.

(result)
Example 10 The carbonic acid pack was excellent in all items of “carbon dioxide generation rate”, “gel formation”, “cracking feeling”, and “sustainability of carbon dioxide”.

Example 11: Carbonated pack (component)
(A agent) (%)
1. Sodium carbonate 1
2. Glycerin 2
3. Dipropylene glycol 10
4). Ethanol 8
5. Fragrance 0.1
6). Purified water remaining amount (B agent)
7). Acrylic acid Na cross polymer (Note 1) 1
8). Sodium dihydrogen phosphate 0.5
9. (Vinyl methicone / methicone silsesquioxane) cross polymer 3

(Production method)
A: Components (1) to (6) are uniformly mixed and dissolved.
B: Components (7) to (9) are uniformly dispersed.
C: Carbonate packs were prepared by swelling agent A with agent B at the time of use.

(result)
Example 11 The carbonic acid pack was excellent in all items of “carbon dioxide generation rate”, “gel formation”, “cracking feeling”, and “sustainability of carbon dioxide”.

Example 12: Carbonated pack (component)
(A agent) (%)
1. Sodium carbonate 1
2. Glycerin 2
3. Dipropylene glycol 10
4). Solveste tetraoleate-30 3
5. Purified water remaining amount (B agent)
6). Isododecane 5
7). Apricot seeds 1
8). Glycerin 5
9. Mineral oil 1
10. N-acetyl L-glutamic acid 1
(C agent)
11. Acrylic acid Na cross polymer (Note 1) 1
12 Sodium acrylate grafted starch (Note 2) 1
13. Dextrin 5

(Production method)
A: Components (1) to (5) are uniformly mixed and dispersed.
B: Components (6) to (10) are uniformly mixed and dispersed.
C: Components (11) to (13) are uniformly dispersed.
D: Carbonate packs were prepared by swelling agent A with agent B and agent C at the time of use.

(result)
Example 12 The carbonic acid pack was excellent in all items of “carbon dioxide generation rate”, “gel formation”, “cracking feeling”, and “sustainability of carbon dioxide”.

Claims (5)

A foamable external preparation for skin that contains water-absorbent resin particles and generates carbon dioxide by mixing at the time of use, and includes a first agent containing at least a basic carbonate and a second agent containing an acidic substance. An effervescent skin external preparation that is separated and prepared by mixing at the time of use.   2. The foamable skin external preparation according to claim 1, wherein the water absorbent resin particles are contained in at least one of the first agent and the second agent.   The foamable external preparation for skin is separated into a first agent containing at least basic carbonate and water-absorbing resin particles and a second agent containing at least an acidic substance, and is prepared by mixing at the time of use. The foamable external preparation for skin according to claim 1 or 2, wherein the preparation is external.   The foamable skin external preparation according to any one of claims 1 to 3, wherein the water-absorbent resin particles are at least one selected from a crosslinked sodium polyacrylate and a starch sodium acrylate graft copolymer.   The foamable skin external preparation according to any one of claims 1 to 4, wherein the water-absorbent resin particles absorb water 400 to 1000 times its own weight.