JPS59141512A - Cosmetic - Google Patents

Abstract

PURPOSE:A cosmetic, obtained by incorporating an aqueous cosmetic with gaseous carbon dioxide, and sealing up the resultant cosmetic in a pressure resistant container, and capable of exhibiting the vasodilator action in use and giving stimulus to the skin in use and further comfortable feeling of use. CONSTITUTION:A cosmetic obtained by incorporating gaseous carbon dioxide (preferably 60ppm or more) in a cosmetic with a relatively high moisture content, e.g. a toilet water, emulsion, hair lotion or shampoo, etc. adjusting the pH to 7 or below, particularly 5-6.5, and sealing up the resultant cosmetic in a pressure resistant container. The gaseous carbon dioxide is incorporated by putting the cosmetic in the pressure resistance container, and sealing up high- pressure gaseous carbon dioxide therein or putting a cosmetic containing a carbonate in the pressure resistant container, and adding a pH adjuster thereto to evolve and seal up gaseous carbon dioxide therein, etc. Preferably, the high- pressure gaseous carbon dioxide is sealed up therein. The pressure in the container is preferably kept at 1.2-8kg/cm<2> (gauge pressure) at 35 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cosmetic containing carbon dioxide gas that gives a pleasant sensation of stimulation to the skin when used.

Carbon dioxide gas has been known to have a vasodilatory effect, and has been clinically used as a carbon dioxide gas bath for rehabilitation.

Therefore, the present inventor focused on incorporating carbon dioxide gas into cosmetics and conducted various studies. As a result, it was found that when all carbon dioxide gas is incorporated into aqueous cosmetics, not only does it have a vasodilatory effect upon use, but also
Is it irritating to the skin? The present invention has been completed based on the discovery that a comfortable feeling of use can be obtained.

Specifically, the present invention provides a cosmetic composition in which carbon dioxide gas is blended into an aqueous cosmetic composition and the mixture is sealed in a pressure-resistant container.

In the present invention, examples of aqueous cosmetics that can contain carbon dioxide include cosmetics with a relatively high water content, such as lotions, milky lotions, hair lotions, hair tonics, and shampoos. J.S. et al.

By the way, carbon dioxide gas depends on the pH of the solution in which it is dissolved.
It is known that when CO is acidic, it exists as a CO molecule and exhibits a vasodilatory effect. Therefore, it is preferable to adjust the liquid properties of the cosmetic composition of the present invention to a pH of 7 or lower, particularly a pH of 5 to 6.5. In addition, the pH of water-based cosmetics is carbon dioxide gas -1
) If E is injected into the aqueous solution and dissolved in the aqueous solution, the acidity will become even stronger, but the final pH may be adjusted to fall within the above range. As the pH adjusting agent, for example, M functionals such as citric acid and tartaric acid or salts thereof, or phosphoric acid or salts thereof are preferably used.

To incorporate carbon dioxide gas into an all-aqueous cosmetic, place the aqueous cosmetic in a pressure-resistant container and completely enclose the high-pressure gas; place the aqueous cosmetic containing carbonate such as sodium bicarbonate in the pressure-resistant container; Methods such as adding a pR regulator to generate all carbon dioxide gas and immediately sealing the container, or placing dry ice pellets in a container and sealing the container are adopted, but the method of sealing in high-pressure gas is particularly preferred. .

When this is done, part of the carbon dioxide gas is dissolved and blended into the aqueous cosmetic, and part of it is present in the container as a gas. In the present invention, it is important that carbon dioxide is dissolved in the aqueous cosmetic, and it is preferable that the carbon dioxide concentration is 69 ppm or more. No expansion effect can be expected, and the effects of the present invention cannot be obtained.

The amount of carbon dioxide gas blended can be adjusted by changing the amount of carbon dioxide gas injected (injected), and generally the pressure in the container is 35
It is preferred that the temperature is 1.2 to 8 to 97♂ (gauge pressure).

In addition, the pressure-resistant container used in the present invention must be able to withstand the above-mentioned pressure and keep the cosmetic in a sealed state until it is used after preparation. Synthetic resin containers such as acetal resin and polycarbonate resin, and glass containers are used. ,
Moreover, this container is preferably of a size suitable for one-time use.

The cosmetics of the present invention can be used in the same manner as conventional cosmetics by opening the container.

At this time, the carbon dioxide gas present in the container in gaseous form evaporates, but the carbon dioxide gas dissolved in the water-based makeup is
A significant decrease is not observed until about 30 minutes after opening the container, and the effects of the present invention are fully exerted if used during that time.

Since the cosmetic composition of the present invention contains all carbon dioxide gas, it improves blood circulation in the skin due to the vasodilatory effect of carbon dioxide gas, and provides a pleasant irritating feeling due to its foaming effect. Furthermore,
Since the pH of the cosmetic itself is slightly acidic, it has a favorable effect on the skin, which is close to the pH of the skin.

Next, description will be given with reference to test examples and examples.

Test Example 1 Lotion 1 with the following composition (placed in a lIJk pressure-resistant container, sealed after pressurizing 0.01 f' of carbon dioxide into the container (product of the present invention) and one without carbon dioxide (comparison product)) were given to women. 1
0 people used the product and evaluated the feeling of use based on the following evaluation criteria. The results are shown in Table 1.

Composition Glycerin 5.0 (wt%)
Propylene glycol 4.0 Polyoxyethylene lauryl ether t2Q addition) 0.
5 Ethanol 10.0 Fragrance
0.1 Preservative Appropriate amount Needle 100 Evaluation criteria 5: Comfortable irritation 4: Slightly comfortable irritation 3: No irritation or irritation but neither comfortable nor unpleasant 2: Slightly unpleasant irritation 1: Unpleasant irritation Table 1 Test Example 2 Hair lotion 51 having the following composition was filled into a pressure-resistant container, and the container was sealed after pressurizing 0.025 fi of carbon dioxide gas (product of the present invention) and carbon dioxide gas was not mixed. 1 Comparative Product) was used by 10 men, and the feeling of use was evaluated based on the same evaluation criteria as in Test Example 1. All results are shown in Table 2.

Composition Ethanol (95% 349.5 (wt%) Purified water
49.6 L-menthol 0.2 Capsicum tincture 0.5 Glycerin 1.2 Fragrance 1.5 Coloring agent Total amount 100.0 From the results of Test Example 1 and Test Example 2 in Table 2, the product of the present invention is different from the conventional product. In comparison, it can be seen that it has a comfortable stimulation sensation when used.

Example 1 A pressure-resistant container was filled with liquid 10111ti having the following composition,
After pressurizing 0.01 fi of carbon dioxide gas into the container, the container is sealed and used as a cosmetic.

Composition Glycerin 5.0 (by weight) Propylene glycol 4.0 Polyoxyethylene lauryl ether 120Ko3 0.5
Ethanol lO・0 fragrance
0.1 Preservative Appropriate amount Example 2 Composition Ethanol (95% 1 49.5 + wt% purified water 47.1 L-menthol 0.2 Capsicum tincture 0.5 Glycerin 1.2 Fragrance 1.5 Pigment Appropriate amount total 100 .0 Dissolve all music products and fragrances in 95% ethanol.Add purified water to this to obtain a cloudy liquid.Next, add 3~5F of talc to the solution to adsorb the precipitates and make a clear liquid. .

Furthermore, this is colored with an appropriate amount of dye.

Take 5 rnl 2 of the solution, fill it in a pressure-resistant container, press-inject 0.025 ff of carbon dioxide gas, and seal it to obtain a hair lotion.

that's all

Claims (1)

[Scope of Claims] 1. A cosmetic comprising a water-based cosmetic mixed with carbon dioxide gas and sealed in a pressure-resistant container. 2. The cosmetic according to claim 1, which has a pH of 7 or less. 3. The cosmetic according to claim 1, which contains carbon dioxide in an amount of 60 ppm or more.