JPH078779B2 - Effervescent cosmetics - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a foaming cosmetic composition that activates the skin by the blood circulation promoting action of carbon dioxide gas and is excellent in gas retention, stability over time, sensory characteristics and skin safety. Regarding

(Prior Art) Conventionally, cosmetics containing carbon dioxide gas for the purpose of promoting blood circulation have been proposed. For example, Japanese Unexamined Patent Publication No. 59-141512 proposes "a cosmetic characterized in that carbon dioxide is mixed with an aqueous cosmetic and sealed in a pressure-resistant container". However, these cosmetics have a drawback that the cost is high because the container has to be pressure resistant.

DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies in view of the above circumstances, and as a result, the foaming cosmetic composition having the specific composition described below is a two-pack type and thus has excellent stability over time, and has a carbonate and water solubility. The second agent, which is a polymer coated with polyethylene glycol, and the first, which is an acidic substance
It was found that carbon dioxide gas bubbles are gradually generated when the agent is mixed at the time of use, and stable bubbles are generated due to the viscosity of the water-soluble polymer and / or clay mineral, and the carbon dioxide gas retention property is enhanced. The invention was completed.

(Object of the Invention) An object of the present invention is to provide an effervescent cosmetic excellent in gas retention, stability over time, sensory characteristics and the like.

(Structure of the Invention) That is, in the present invention, an aqueous solution obtained by dissolving an acidic substance in water is used as a first agent, and a water-soluble polymer and / or a clay mineral and a carbonate are coated with room temperature solid polyethylene glycol. This is a ready-to-use mixing type effervescent cosmetic containing the solidified product as the second agent.

(Detailed Description of Configuration) As the acidic substance in the present invention, a water-soluble substance is used, and for example, formic acid, acetic acid, propionic acid, butyric acid,
Linear fatty acids such as valeric acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid,
Dicarboxylic acids such as maleic acid, phthalic acid, isophthalic acid, and terephthalic acid; acidic amino acids such as glutamic acid and aspartic acid; organic acids such as oxyacids such as glycolic acid, malic acid, tartaric acid, and citric acid. Examples thereof include inorganic acids such as phosphoric acid, potassium dihydrogen phosphate, sodium dihydrogen phosphate, sodium sulfite, potassium sulfite and the like, or salts thereof. In the present invention, one kind or two or more kinds thereof are applied, and citric acid and tartaric acid are particularly preferable.

The water to be blended in the present invention is purified water that is usually used,
Deionized purified water or distilled water treated with an ion exchange resin is applied.

To prepare an aqueous solution of an acidic substance, an acid may be added to water and appropriately stirred and heated. The acid concentration is 0.5-10% by weight.
(Hereinafter abbreviated as wt%).

The carbonate used in the second agent is solid at room temperature, such as sodium hydrogen carbonate, sodium carbonate,
Examples thereof include sodium sesquicarbonate, potassium hydrogencarbonate, potassium carbonate, potassium sesquicarbonate, ammonium hydrogencarbonate, ammonium carbonate, ammonium sesquicarbonate, and one or more of these are applied. Particularly in the present invention, sodium hydrogen carbonate is preferable.

The ratio of carbonate in the second agent is 10.0 to 90.0 wt%. If it is less than 10.0 wt%, the foamability is not sufficient, and it is 90.0 wt.
If it exceeds%, the appearance of the foam (texture) and the gas retention will be poor.

As the water-soluble polymer used in the second agent, natural polymers, semi-synthetic polymers and synthetic polymers are applied.

Among natural polymers, polysaccharides and their derivatives include
For example, alginic acid and its salts, gum arabic, pectin, quinseed, tragacanth, xanthene gum, corn starch, potato starch, arge colloid, hyaluronic acid and its salts, chondroitin sulfate and its salts, chito acid and its derivatives, dextrin and the like. Can be mentioned. Examples of other natural polymers include nucleic acids and salts thereof, ribonucleic acids and salts thereof, gelatin, collagen, silk fibroin and the like.

Among the semi-synthetic polymers, examples of the cellulose derivative include carboxymethyl cellulose and salts thereof, methyl cellulose, ethyl cellulose, propyl cellulose,
Examples thereof include hydroxymethyl cellulose. Other semi-synthetic polymers include propylene glycol alginate, ethylene glycol alginate,
Dextrin fatty acid ester, gelatin fatty acid ester, gelatin fatty acid amide, etc. are also used.

Synthetic polymers include vinyl-based polymers and acrylic-based polymers. Examples of vinyl-based polymers include carboxyvinyl polymer, polyvinyl alcohol, polyvinylpyrrolidone, polyvinylpyrrolidone vinyl acetate copolymer, and acrylic-based polymers. Examples thereof include polyacrylic acid and salts thereof, acrylic resin alkanolamine solution, and acrylic acid ester polymer. In addition, as other synthetic polymers, polypropylene glycol,
Examples thereof include polybutylene glycol and polyglycerin.

As the clay mineral, bentonite, kaolinite, laponite, synthetic bentonite, montmorillonite, etc. can be applied.

In the present invention, one or more of these water-soluble polymers and clay minerals are applied, particularly sodium acrylate,
Sodium alginate, xanthene gum, montmorillonite and the like are suitable.

The proportion of the water-soluble polymer and / or clay mineral in the second agent is 1.0 to 50 wt%. If it is less than 1.0 wt%, the thickening is not sufficient, and if it exceeds 50 wt%, a sticky feeling appears and the organoleptic properties deteriorate.

The polyethylene glycol which is solid at room temperature used in the present invention has a molecular weight of 1000 or more, and usually has a molecular weight of 1000 to 10,000, preferably 2000 to 6000.

The polyethylene glycol in the second agent is 5.0 to 50.
It is 0 wt%. If it is less than 5.0 wt%, the reaction will be too fast,
The foam does not have enough hold, and if it exceeds 50.0 wt%, the generation of foam is too slow.

Various methods are used to prepare the second agent of the present invention, for example, a kneading granulation method by adding a water-soluble polymer and a carbonate to polyethylene glycol melted at a melting point or higher and cooling the mixture. A fluidized granulation method in which a polyethylene glycol aqueous solution is sprayed on a water-soluble polymer and carbonate to evaporate water can be used.

The particle size of the second agent thus obtained is 0.01 to 1 mm. If it is less than 0.01 mm, the reaction is too fast, and if it is more than 1 mm, the second agent is felt as a foreign substance during use, which is not preferable.

The weight ratio of the first agent to the second agent is 100: 1 to 1: 1. Particularly, it is preferable to mix the first agent and the second agent so that the mixed solution after the reaction has a pH of 4.5 to 6.5.

To use the effervescent cosmetic, the first agent is placed in a container, the second agent is added, and the mixture is stirred for several tens of seconds and then used as appropriate.

Perfumes, colorants, preservatives, surfactants, oily components and the like can be appropriately added within the range that achieves the object of the present invention.

In addition, the foamable cosmetics, lotion, essence,
It can be applied to milk, packs, soaps, etc.

(Examples) The present invention will be described in detail below with reference to examples and comparative examples.

Incidentally, as described in Examples, foamability test, aging stability test,
The methods of gas retention test, sensory property and skin safety test are as follows.

(1) Foaming test 5g of sample is a transparent glass cylinder (diameter 5cm, height 50c
m) and mix by shaking for 30 seconds with a touch mixer at room temperature, and measure the height of the foam after 1 minute.

(2) Day-to-day stability test Samples of one agent and two agents are stored in an unsealed state at 45 ° C for 1 month, and then the foamability test is performed again.

(3) Gas retention test 5g of sample is a transparent glass cylinder (diameter 5cm, height 50c
m) and shake with a touch mixer for 30 seconds at room temperature to measure the height of the foam after 30 minutes.

(3) Sensory characteristics and skin fluff safety test The samples were evaluated by 20 female subjects, and the appearance of the foam (texture), stickiness, viscosity, and skin fluff safety were evaluated. The test results are shown by the number of subjects who responded to each item that the appearance (texture) of the foam was good, the feeling of stickiness was low, and the viscosity was just good and the skin irritation was felt.

Examples 1 to 11 [Effervescent Essence] Effervescent essences having the compositions shown in Table 1 were prepared and the above-mentioned tests were carried out.

[Preparation method]

<First agent> Add citric acid to water, stir, and mix uniformly. If citric acid is difficult to dissolve, it is heated appropriately.

<Second agent> At about 80 ° C, polyethylene glycol (molecular weight 4000) is dissolved, and when heated, sodium hydrogen carbonate and sodium alginate are added, and the mixture is uniformly mixed and then cooled to room temperature to obtain a polyethylene glycol-coated powder. did.

〔Characteristic〕

As shown in Table 1, the effervescent essence of the present invention is excellent in effervescence, gas retention, and stability over time, and is excellent in all tests such as sensory characteristics. It was clear.

Comparative Examples 1 to 3 [Effervescent Essence] Effervescent essences having the compositions shown in Table 2 were prepared, the above-mentioned tests were carried out, and the characteristics are shown in the lower row.

[Preparation method]

<First Agent> (Comparative Examples 1 to 3) Citric acid is added to water and stirred to uniformly mix and dissolve.
If citric acid is difficult to dissolve, warm it appropriately.

<Second Agent> (Comparative Example 1) Polyethylene glycol (molecular weight 4000), sodium hydrogen carbonate, and sodium alginate are uniformly mixed at room temperature,
It was made into powder.

(Comparative Example 2) Sodium hydrogencarbonate and sodium alginate were uniformly mixed at room temperature to obtain a powder.

(Comparative Example 3) Polyethylene glycol (molecular weight 4000) was dissolved at about 80 ° C, and sodium hydrogencarbonate was added with heating and uniformly mixed, and then cooled to room temperature to obtain a powder.

〔Characteristic〕

As shown in Table 2, Comparative Example 1 in which sodium hydrogen carbonate and sodium alginate were simply mixed without coating with polyethylene glycol during preparation of the second agent had a better foaming property than Example 2. It was extremely inferior in gas retention and inferior in stability over time.

Comparative Example 2 in which polyethylene glycol was not used also showed similar characteristics.

In Comparative Example 3 in which the water-soluble polymer was not mixed with the second agent, the foamability and stability over time were good, but the gas retention was significantly poor, the appearance (texture) of the foam was poor, and the viscosity was insufficient. Was there.

Comparative Examples 4 to 10 [One-component foaming essence] As shown in the composition of Table 3, one-component foaming essence to be used by dissolving in water at the time of use was prepared. Mixed. The various tests described above were carried out, and the characteristics are shown in the lower row.

[Preparation method]

(Comparative Examples 4 and 5) Polyethylene glycol (molecular weight 4000) was dissolved at about 80 ° C., sodium hydrogencarbonate, citric acid, and sodium alginate were added while heating, and the mixture was uniformly mixed and cooled to room temperature to obtain a powder. .

(Comparative Example 6) Polyethylene glycol was dissolved at about 80 ° C, and when heated, sodium hydrogencarbonate and citric acid were added and uniformly mixed, and then cooled to room temperature to obtain a powder.

(Comparative Example 7) At room temperature, sodium hydrogen carbonate, citric acid, and sodium alginate were uniformly mixed to obtain a powder.

Comparative Example 8 Sodium hydrogencarbonate, citric acid, sodium alginate, and polyethylene glycol (molecular weight 4000) were uniformly mixed at room temperature to obtain a powder.

(Comparative Example 9) Polyethylene glycol (molecular weight 4000) was dissolved at about 80 ° C, and when heated, sodium alginate and sodium hydrogen carbonate were added and uniformly mixed, then cooled to room temperature, and citric acid was added and uniformly mixed. , And powder.

(Comparative Example 10) (1) Polyethylene glycol (molecular weight 40
A part of (00) was dissolved, and sodium alginate and sodium hydrogencarbonate were added while heating and mixed uniformly, and then cooled to room temperature to obtain a powder.

(2) The rest of polyethylene glycol was dissolved at about 80 ° C., citric acid was added while hot and mixed uniformly, and then cooled to room temperature to obtain a powder.

(2) was added to (1) and mixed uniformly.

〔Characteristic〕

As shown in Table 3, Comparative Examples 4 and 8 to 10 having almost the same composition as Example 2 except for water were as good as Example 2 in the foamability and gas retention test, but The stability over time was extremely poor.

In Comparative Example 5 in which the compounding ratio was changed, Comparative Example 6 except for sodium alginate, and Comparative Example 7 in which polyethylene glycol was removed, the improvement in aging stability was not achieved.

Example 12 [Effervescent cream] An effervescent cream having the following composition was prepared, and a second effervescent cream was prepared before use.
Five times the amount of the first agent was mixed with the agent and the above-mentioned tests were carried out.

〔composition〕

 <First agent> (wt%) Citric acid 8.0 Water 92.0 <Second agent> (wt%) Polyethylene glycol (molecular weight 6000) 18.0 Sodium hydrogen carbonate 50.0 Liquid paraffin 15.0 POE sorbitan monooleate (20E.O.) 3.0 Sorbitan Sesquioleate 2.0 Montmorillonite 12.0 [Preparation method] <First agent> Add citric acid to water and uniformly mix and dissolve.

<Second agent> Polyethylene glycol (molecular weight 6000), liquid paraffin, POE sorbitan monooleate (20E at about 80 ° C)
O) and sorbitan sesquioleate are dissolved, and when heated, sodium hydrogen carbonate and montmorillonite are added and uniformly mixed, and then cooled to room temperature to obtain a powder.

〔Characteristic〕

It was excellent in foamability and gas retention, and when used, carbon dioxide gas bubbles were suitable to stimulate skin fluff and were also excellent in sensory characteristic tests. The characteristics did not change with the passage of time.

Example 13 [Foamable soap] A foamable soap having the following composition was prepared, and 5 times the amount (weight) of the first agent was mixed with the second agent at the time of use, and the above-mentioned tests were carried out.

〔composition〕

<First agent> (wt%) Tartaric acid 5.0 Glycerin 10.0 Water 58.0 <Second agent> (wt%) Sodium N-acylglutamate 50.0 Sodium hydrogen carbonate 30.0 Carboxymethylcellulose 3.0 Polyethylene glycol (molecular weight 4000) 15.0 Synthetic bentonite 2.0 [Preparation method] <First agent> Tartaric acid is added to water and mixed and dissolved uniformly, and then glycerin is added and mixed uniformly.

<Second agent> Polyethylene glycol (molecular weight 4000) is dissolved at about 80 ° C, and when heated, sodium hydrogen carbonate, carboxymethyl cellulose and synthetic bentonite are added and uniformly mixed, cooled to room temperature, and sodium N-acylglutamate is added. And uniformly mix to make a powder.

〔Characteristic〕

It has excellent foamability, gas retention, and stability over time,
Sensually, carbon dioxide gas stimulated the pores comfortably and was excellent in detergency.

(Effects of the Invention) As described above, the foaming cosmetic composition of the present invention has a foaming property,
It is obvious to provide a skin cosmetic which is excellent in gas retention and stability over time, and is also excellent in sensory properties and skin safety.

Claims (1)

[Claims] 1. A solid product obtained by coating an aqueous solution obtained by dissolving an acidic substance in water as a first agent, a water-soluble polymer and / or a clay mineral and a carbonate with a room temperature solid polyethylene glycol. Mixing type effervescent cosmetic when used as 2 agents.