JPS6143102A - Cosmetic - Google Patents

Abstract

PURPOSE:A safe cosmetic, capable of preventing generation of an unpleasant smell and an itch, and composed of a microbicide incorporated with carbon dioxide having a vasodilative action or a substance capable of generating carbon dioxide. CONSTITUTION:A cosmetic such as a lotion, milky lotion, hair lotion and rinse, prepared by incorporating carbon dioxide gas of >=60ppm concentration into a cosmetic composition containing a microbicide such as thymol, resorcin and trichlorocarbanilide (the content to be incorporated is preferably 0.001-5wt%) by such as enclosing the high pressure gas into a pressure vessel containing the cosmetic composition, or prepared by supporting both a carbonate such as sodium carbonate and an acid such as fumaric acid on a carrier in the absence of water, and further supporting said microbicide-containing cosmetic composition on the carrier together, whereby the carbon dioxide can be generated by adding water thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to cosmetics, and more particularly to cosmetics containing a bactericide and carbon dioxide gas.

[Conventional technology]

Recent cosmetic concerns regarding the skin and scalp include unpleasant odors and itching. These are caused by various bacteria present on the skin and scalp decomposing sebum, and the decomposition products and sebum products themselves emit an unpleasant odor, and the decomposition products and metabolites stimulate irritation and cause itching. I'm doing it. Therefore, many attempts have been made to prevent the growth of various bacteria existing on the skin and scalp using appropriate drugs, thereby reducing the amount of sebum decomposition products and metabolites caused by bacteria, thereby preventing the unpleasant odor and itching on the scalp. .

For example, cosmetics containing various fungicides have been used.

However, these known fungicides often cause side effects when used for a long period of time, and if the amount added is reduced, they become ineffective, and no satisfactory results have been obtained in terms of efficacy and practicality. .

[Problem that the invention seeks to solve]

Therefore, it has been desired to develop a safe cosmetic containing a bactericide that can prevent unpleasant odors and itchiness.

[Means for solving problems]

The present inventors have conducted various studies on improving the action of bactericidal agents, and as a result, it has been found that the drug has both bactericidal and vasodilatory effects, and is clinically used as a carbon dioxide gas bath for rehabilitation. The present invention was completed based on the discovery that the combined use of carbon dioxide gas or a substance that generates carbon dioxide greatly increases the effectiveness of the disinfectant compared to using it alone.

That is, the present invention provides a cosmetic product characterized in that a cosmetic composition containing a bactericide is blended with carbon dioxide gas or a carbon dioxide gas generating substance.

Examples of the cosmetics of the present invention include the following.

(2) A cosmetic composition containing a conventionally known refreshing agent is placed in a pressure-resistant container, and high-pressure carbon dioxide gas is blown into the container, or a carbon dioxide gas generating source such as carbonate and acid or dry ice is added and the container is sealed.

When using this cosmetic, the contents are discharged and applied to the area to be applied.

(2) Carbonate and acid are supported on a single carrier such as nonwoven fabric, cloth, paper, etc. in the substantial absence of water.

Furthermore, a known cosmetic composition containing a bactericide is also supported on this carrier.

When using this cosmetic, apply it to the area to be applied.

Water is supplied to the cosmetic by placing a steamed towel on top of the cosmetic or adding water to cause the carbonate to react with the acid to generate carbon dioxide gas.

(2) Support the carbonate and acid on two different carriers. One or both of these carriers can be loaded with a known cosmetic composition containing a bactericide, as in (2), or can be made to retain moisture.

When using this cosmetic, it is applied in layers to the area to be applied, and if necessary (if the cosmetic does not contain water), water is supplied in the same manner as in (2) to generate carbon dioxide gas.

The fungicides used in the present invention include salicylic acid, sodium salicylate, roseoxybenzoic acid and its esters, isopropylmethylphenol, orthophenylphenol, cresol, thymolresorcinol, photosensitizer 10
1. Photosensitive element 201, Photosensitive element 301, Photosensitive element 401, Lysozyme chloride, Chlorhexicine hydrochloride, Chlorhexicine gluconate, Trichlorocarbanilide, Hexachloro 7
ene, 2,2'-dithiobis-pyridine-i, i'
-dioxide and its magnesium sulfate trihydrate, cinquebis(2-birisolthio) -1,1'-dioxide, [l-imidazolyl] -(1-(4'-chloro)
phenoxy]-3-zomethyl-butan-2-one, l-
Examples include monoethanolamine salt of hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-(IH)-pyridone, among which thymol, resorcin and trichlorocarbanilide is particularly preferred. This selficide is used by blending it with a solvent such as water or water-lower alcohol. It is preferable that the bactericidal agent be blended in the cosmetic composition of the present invention in an amount of 0.001 to 51% by weight (hereinafter simply expressed as %).

If it is less than 0.001%, sufficient effect cannot be obtained, and if it is less than 5%
Containing any of the above ingredients gives an unpleasant irritation to the scalp, which is undesirable.

On the other hand, it is known that the carbon dioxide gas used in (2) exists as CO2 molecules when the pH of the solution in which it is dissolved is hostile, exhibits a vasodilatory effect, and exhibits a percutaneous absorption promoting effect. Therefore, the liquid properties of the cosmetics of the present invention are pH 7 or less,
In particular, it is preferable to adjust the pH to 4.5 to 6.5. Note that the pH of cosmetics becomes even more acidic when carbon dioxide gas is injected and dissolved into the cosmetic composition, but the final pH
What is necessary is just to adjust H so that it falls within the above range. As the pH adjuster, organic acids such as citric acid, tartaric acid, and lactic acid or their salts, phosphoric acid or its salts, and solid acids such as acid clay are preferably used.

Further, examples of the carbonate used in the present invention include sodium bicarbonate, sodium carbonate, sodium sesquicarbonate, potassium bicarbonate, potassium carbonate, potassium sesquicarbonate, ammonium bicarbonate salt, ammonium carbonate salt, ammonium sesquicarbonate salt, etc. These can be used alone or in combination of two or more.

Further, as the acid, both organic acids and inorganic acids can be used, but water-soluble and solid acids are preferred. Examples of organic acids include straight chain fatty acids such as formic acid, acetic acid, propionic acid, butyric acid, and valeric acid; oxalic acid, malonic acid, co/·phosphoric acid, glutaric acid,
Dicarboxylic acids such as adipic acid, pimelic acid, fumaric acid, maleic acid, phthalic acid, isophthalic acid, terephthalic acid;
Acidic amino acids such as glutamic acid and aspartic acid; glycolic acid, lactic acid, hydroxyacrylic acid, α-oxybutyric acid, glyceric acid, tartronic acid, malic acid, tartaric acid,
Oxyacids such as citric acid, salicylic acid (o, m, p), gallic acid, mandelic acid, trono (acid, ascorbic acid, gluconic acid); cinnamic acid, benzoic acid, phenylacetic acid, nicotinic acid, kainic acid, nruvic acid, pyrrolidone carboxylic acid,
Examples include trimellitic acid, benzenesulfonic acid, toluenesulfonic acid, and acid salts of these organic acids. Examples of inorganic acids include phosphoric acid, potassium dihydrogen phosphate, sodium dihydrogen phosphate, sodium sulfite, potassium sulfite, sodium pyrosulfite (sodium metabisulfite), potassium pyrosulfite (potassium metabisulfite), acidic Examples include sodium xametaphosphate, acidic potassium hexametaphosphate, acidic sodium pyrophosphate, acidic potassium pyrophosphate, and sulfamic acid. Among these, aliphatic dicarboxylic acids such as succinic acid, fumaric acid, phosphoric acid, and acid salts thereof are preferred.

In the present invention, it is preferable to adjust the pH of the carbon dioxide gas generating atmosphere to 4 to 7 by adjusting the amounts of these carbonates and acids. For example, when used in combination with a cosmetic composition containing a known bactericide, the amounts of carbonate and acid are preferably 1 to 20% by weight, particularly 2 to 10% by weight of the total composition. Further, the carbon dioxide concentration in the cosmetic composition of the present invention is preferably 60 ppm or more, otherwise sufficient effects will not be achieved.

In order to incorporate carbon dioxide gas into the cosmetics in aspect (2), the cosmetics are placed in a pressure-resistant container and high-pressure gas is sealed therein, or the cosmetic is impregnated with carbonate such as sodium bicarbonate in the pressure-resistant container. A method of adding a pH adjuster to the container to generate carbon dioxide gas and immediately sealing the container, or a method of placing a dry ice fret in the container and sealing it is adopted, but in particular, a method of enclosing high-pressure gas is adopted. The method is preferred.

When this is done, part of the carbon dioxide gas is dissolved and blended into the cosmetic, and part of it is present in the container as a gas. In the present invention, it is important that carbon dioxide gas be dissolved and blended into the cosmetic, and it is preferable that the concentration of carbon dioxide gas is 60 ppm or more. The effect of preventing unpleasant odor and itchiness on the scalp cannot be expected, and the effects of the present invention cannot be obtained. The amount of carbon dioxide gas blended can be adjusted by the injection (injection) of carbon dioxide gas, and generally the pressure in the container is 356°C.
It is preferable to set the temperature to 0-f+humidity temperature 1.2 to 8 Yu/d (gauge pressure).

Further, the pressure-resistant container used in the present invention must be capable of withstanding the above-mentioned pressure and keeping the cosmetic in a sealed state until it is used after preparation; for example, a metal container made of aluminum, tin, etc. Synthetic resin containers such as acetal resin and polycarbonate resin, and glass containers are used.

On the other hand, if the diameter of the discharge nozzle is small, the filling liquid is sprayed in the form of mist, and if the diameter is large, the filling liquid is sprayed in the form of foam or liquid. Although the spray form also varies depending on the internal pressure of the can, the diameter of the discharge nozzle of an aerosol spray container is generally 0.3 mx or less, and when this is applied to the cosmetic of the present invention, carbon dioxide gas is sprayed in the form of a mist. Since it scatters quickly, sufficient effect cannot be obtained. In order to further enhance the effects of the present invention, it is necessary to increase the residence time of carbon dioxide gas in the cosmetic, so the cosmetic of the present invention can be applied directly to the scalp in foam or liquid form without adhering to the hair. , preferably foamed on the scalp. For this reason, it is preferable that the diameter of the discharge nozzle is 0.3 to 1.5 m and the length is 1 to 15 crn. Furthermore, in order to prevent the amount of dissolved carbon dioxide gas from decreasing due to a decrease in the internal pressure of the can during use, and to maintain a constant injection condition, a mini cylinder of carbon dioxide gas is built into the container. It is preferable to combine it with an aerosol injection device such as that disclosed in Japanese Patent Application Laid-Open No. 57-153752 which supplies fresh carbon dioxide gas. In this way, the carbon dioxide concentration can be maintained constant from the beginning of use until the end of use.

In addition to the above-mentioned essential ingredients, ingredients used in ordinary cosmetics, such as oily bases, emollients, gelling agents, various emulsifiers, fragrances, etc.
Preservatives such as parahydroxybenzoic acid ester, antioxidants such as butylhydroxyanisole, coloring agents such as dyes,
Wetting agents such as propylene glycol, film agents, thickeners, blood circulation promoters, vitamins, etc. can be appropriately blended.

〔effect〕

The cosmetic of the present invention obtained on paper has an excellent bactericidal effect.

〔Example〕

Next, the present invention will be explained with reference to Examples.

Example 1 A hair tonic having the composition shown in Table 1 was prepared, and its effectiveness in preventing scalp odor and itchiness was evaluated. In the evaluation, 10 subjects who had thoroughly washed their hair used the present invention product and the comparative product Hair Artonic for 3 days without washing their hair. The subjects themselves performed a sensory evaluation of itching. The evaluation was performed on an absolute basis based on the following criteria.

Scalp odor l+2) Not at all, (+1) Not at all, (0) Neither, (-1)
Slight smell, (-2) Smell, Itchy scalp l+2) Not felt at all, (+1) Hardly smelled, (0) Can't say either, (-1) Slightly smelled, (-2) Sensed . 1. The results are shown in Table 2.

(Composition) Table 1 (Preparation method) Bactericide and pH adjuster e Add to a 50% v/v ethanol aqueous solution and stir and mix thoroughly. Fill this into a pressure container and blow carbon dioxide gas into it.

〔result〕

Table 2 The numbers in the table indicate the average values of 10 people.

From the results of this evaluation, it is clear that the product of the present invention containing carbon dioxide gas and a bactericide causes almost no scalp odor or itching compared to the comparative product.

Example 2 Hair tonic: (Composition) ■Ethanol 50.0 (chi)■Carbon dioxide gas i.

■Resorcinol 0.1■Polyoxyethylene hydrogenated castor oil (2oE, o,) 0.5■
Lactic acid 0.133
■Sodium lactate 0.3■Fragrance
Appropriate amount ■Water Remainder (manufacturing method) Mix ■, ■~■ at room temperature, put in a pressure-resistant container, attach multiple injection devices, seal, and fill with ■ to make a product. The obtained hair tonic was excellent in preventing scalp odor and itching.

Example 3 Skin lotion: (composition) ■ Ethanol 10.0 (%) ■ Carbon dioxide 1.0 ■ Trichlorocarbani IJ)" 0.1 ■ Acetic acid d-
α-Tocopherol 0.05 ■ Lactic acid 0.133 ■ Sodium lactate 0.3 ■ Polyoxyethylene hydrogenated castor oil (20E, O,) 0.5 ■ Fragrance
Appropriate amount ■Water Remainder (manufacturing method) Mix ■, ■~■ at room temperature, put in a pressure-resistant container, attach an injection device, seal, and fill with ■ to make a product.

The obtained skin lotion was excellent in preventing unpleasant odor from underarms and sweat.

Example 4 Shampoo: (Composition) ■Carbon dioxide 1.0■
Thymol o, i ■ Lactic acid
o, iaa ■ Sodium lactate
o, 3■Fragrance, appropriate amount■Water, balance (H method) ■, ■, ■~■ are mixed at room temperature, placed in a pressure-resistant container, attached with an injection device, sealed, and filled with ■ to obtain a product. The resulting shampoo was excellent in preventing scalp odor and itching.

Example 5 Hair rinse: (Composition) ■ Distearyldimethylammonium chloride 2
．． o (% ■ stearyl alcohol
i.

■Carbon dioxide i,
.

■Resorcinol o
, i■ lactic acid o, iaa
■Sodium lactate 0.3■
Fragrance Appropriate amount ■Water Remainder (manufacturing method) Heat and mix ■, ■, ■, ■ at 7θ℃, and add here ■, ■,
Mix and dissolve (2) and add heated to 70°C to emulsify, return to room temperature, place in a pressure-resistant container, tightly seal with an injection device, and fill (2) to produce a product. The obtained hair rinse was excellent in preventing scalp odor and itching.

that's all

Claims (1)

[Scope of Claims] 1. A cosmetic product comprising a cosmetic composition containing a bactericide and a carbon dioxide gas or a carbon dioxide gas generating substance added thereto. 2. The cosmetic according to claim 1, wherein the amount of the bactericide is 0.001 to 5% by weight. 3. The cosmetic according to claim 1, which contains carbon dioxide in an amount of 60 ppm or more.