JP2003342160A - External preparation for skin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop an external preparation for the skin free from irritation and unpleasant odor, excellent in storage property and antimicrobial properties and increasing a moisture-retaining property and a heat-insulating property. <P>SOLUTION: The external preparation for skin is obtained by dissolving seaweed in an aqueous solution of a monovalent alkali to provide paste and neutralizing the paste. The monovalent alkali is preferably sodium carbonate. Oil, mineral water, an essential oil and/or a clay mineral may be added thereto. The sodium concentration is preferably 1.4-2.1 and the oil is preferably contained in an amount of 2-10% based on total amount. The external preparation for skin may be used as a pack cosmetic. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention applies to the skin to
The present invention relates to a skin external preparation such as a pack cosmetic that improves moisturizing properties.

[0002]

2. Description of the Related Art Conventionally, a fungo pack containing sea mud as a main component and an algo pack containing seaweed as a main component are applied to the skin, and after leaving for a certain period of time, the skin is rinsed off to provide a moisturizing function to dry skin. It has been attempted to prevent aging of the skin, promote metabolism, and cleanse the skin by increasing or removing excess sebum for oily skin.

However, conventional algo packs containing seaweed as a main component have a problem that they are highly irritating and irritating to some people, and the aroma of seaweed is so strong that some people do not like them, which causes an unpleasant odor and relaxes. There were problems that the effect that could be produced was lost, that mold easily grew and storage stability was poor. Therefore, the present inventors have solved these various problems, and as a result of repeated studies on a pack agent that further enhances the original effect of the pack, as a result,
Finally, the present invention has been achieved.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides an external preparation for skin which has no irritating or unpleasant odor to the skin, is excellent in preservability and antibacterial property, and can enhance the moisturizing and heat retaining properties of the skin. The purpose is to develop.

[0005]

The external preparation for skin according to the first aspect of the present invention is characterized in that seaweed is dissolved in a monovalent alkaline aqueous solution to form a paste and neutralized. . According to this structure, the moisturizing property is excellent and the irritation can be suppressed.

The external preparation for skin according to the second aspect of the present invention is characterized in that the monovalent alkali is sodium carbonate. According to this structure, the dissolution rate is faster than that of other monovalent alkaline aqueous solution.

The external preparation for skin according to the third aspect of the present invention is characterized by containing an oil.
According to this structure, there is no irritation or unpleasant odor, and the moisturizing property is improved.

The external preparation for skin according to a fourth aspect of the present invention is characterized by containing mineral water. With this structure, the antibacterial property is excellent and the moisturizing property of the skin is enhanced.

[0009] Of the present invention, the external preparation for skin according to the invention of claim 5 is characterized by containing an essential oil.

The external preparation for skin according to the invention of claim 6 of the present invention is characterized in that a clay mineral is added. According to this structure, it is possible to further improve the moisturizing property of the skin and to impart the heat retaining effect by emitting far infrared rays.

The external preparation for skin according to claim 7 of the present invention comprises mineral water and oil, has a sodium concentration of 1.4 to 2.1% and an oil content of 2 to 10%. And With this configuration,
It is possible to suppress skin irritation and unpleasant odor, and to enhance the moisturizing and heat retaining properties of the skin.

The external skin preparation according to the invention of claim 8 is a pack cosmetic. According to this structure, the moisturizing property and heat retaining property of the skin can be enhanced and the skin can be smoothed only by applying and washing with water after a few minutes.

Examples of seaweed include brown algae, red algae, and green algae. Seaweeds rich in alginic acid are preferable, and kelp and wakame are preferable. The kelp can increase the moisturizing property of the skin and suppress the release of histamine in the skin cells.

Examples of the mineral water include seawater and artificial seawater, but seawater, more preferably deep layer water, is preferable. Thereby, the moisturizing property can be maintained, and the mineral water components manganese and iodine can impart antibacterial activity.

Examples of the oil include olive oil, sesame oil, squalane, jojoba oil, etc. Olive oil is preferable from the viewpoint of price and safety to the skin. The mixing ratio is 2 with respect to the total amount of seaweed and mineral water.
10% is preferable. The addition of oil can impart skin lipid maintenance, antioxidant action, and antibacterial activity.
Also, it is desirable to add vitamin E to the oil to prevent oxidation. Vitamin E can be added in any proportion,
About 1% is desirable with respect to the amount of oil.

Examples of the essential oil include lavender, rosemary, chamomile, ginger and the like, and each aroma can be selected according to the preference of the user and the desired effect. In addition, the essential oil can enhance antibacterial activity and antiviral activity.

Examples of the clay mineral include diatomaceous earth, kaolin, magnesia clinker, montmorillonite, bentonite, tourmaline, etc., and diatomaceous earth is preferable. By adding a clay mineral, it is possible to impart functions and effects such as deodorization, metabolism promotion, and far infrared ray emitting action.

Examples of the external preparation for skin of the present invention include ointments, cosmetics for face or whole body packs, and the like.
The pack cosmetic can be prepared, for example, as follows. First, after washing kelp with water and draining it, alkali treatment with sodium carbonate or potassium carbonate to adjust the pH to 9-10, add water, and use a high-speed cutter for 30-40 minutes.
Cut and agitate. At this time, the final temperature of the kelp paste is about 80 to 85 ° C. After eluting alginic acid in this way, add acid such as lactic acid to neutralize the pH.
Adjust to 5.2 to 6.1. The unneutralized kelp paste has a pH of about 10 and adversely affects the skin, so it is adjusted to have the same weak acidity as the skin. Next, add mineral water such as concentrated deep water, add oil such as olive oil, add vitamin E as an antioxidant, essential oil according to taste and use, and add diatomaceous earth to improve moisturizing and heat retaining properties. Then, it can be prepared by uniformly mixing.

[0019]

EXAMPLES The present invention will be described in detail below based on examples. The invention is not limited to these examples.

EXAMPLE 1 Wet kelp (4.5 kg dry matter) and dry kelp (1.3 kg dry matter) combined 5.8 kg kelp (Macomb) and 0.7 kg sodium carbonate
And, mix 53.5 kg of water, cut with a high speed cutter for 30 minutes,
It was stirred. The final temperature of the kelp paste at this time was 81 ° C. Next, 1.8 kg of 50% lactic acid was added to adjust the pH to 5.7.
Next, 15.5kg of deep-sea water (concentrated cold water of the Sea of Japan in Toyama Bay) concentrated to 5 times was added to the neutralized kelp paste, 3.0kg of olive oil containing 30g of vitamin E, and 80g of ginger oil were evenly added in order. The mixture was mixed, dispensed, placed in a pack container, sealed, and then sterilized by heating at 85 ° C. for 1 hour to produce a seaweed pack cosmetic for thalassotherapy. Sodium carbonate is used to dissolve kelp, and cutting with a high speed cutter and stirring are used to accelerate dissolution. The neutralized kelp paste may be put in the pack container as it is without adding anything, and similarly treated to obtain a product.

Example 2 5.8 kg of kelp (Macomb), which is a combination of wet kelp (4.5 kg of dry matter) and dry kelp (1.3 kg of dry matter), and 0.7 kg of sodium carbonate
And, mix 53.5 kg of water, cut for 40 minutes with a high speed cutter,
It was stirred. The final temperature of the kelp paste at this time was 85 ° C. Next, 1.8 kg of 50% lactic acid was added to adjust the pH to 6.0.
Next, 15.5 kg of deep sea water (cool water unique to the Sea of Japan in Toyama Bay) concentrated to 5 times, 3.0 kg of olive oil containing 30 g of vitamin E, 80 g of ginger oil, and 4 kg of diatomaceous earth calcined at 800 ° C. were sequentially added. The mixture was uniformly mixed, dispensed, placed in a pack and sealed, and then heated at 85 ° C. for 1 hour for sterilization to produce a diatomaceous earth-containing seaweed pack cosmetic for thalassotherapy.

The present inventor has conducted similar experiments using, for example, potassium carbonate and sodium hydroxide as the monovalent alkali instead of sodium carbonate, and confirmed that the paste-like form is obtained in this case as well. There is.

Reference Example 1 A conventional algo pack containing seaweed as a main component and a seaweed pack of the present invention (neutralized kelp paste to which deep sea water, olive oil, and ginger oil were added) were compared, and the test subjects were compared. A questionnaire survey was conducted to evaluate skin irritation, scent, and touch. The results are shown in Table 1. As a result, it was shown that the product of the present invention is far better than the conventional product in terms of storability, functionality, heat retention, etc. of the product itself and the feeling of use of the subject.

[0024]

[Table 1]

Reference Example 2 A conventional algo pack containing seaweed as a main component and a seaweed pack of the present invention (a product in which neutralized kelp paste was directly put in a pack container) were compared and a questionnaire survey was conducted on the subjects. Then, the skin irritation, scent, and touch were evaluated. The results are shown in Table 2. As a result, the shelf life of the product itself, functionality, heat retention, etc.
The product of the present invention was shown to be far better than the conventional product.

[0026]

[Table 2]

Test Example 1 Four seaweed packs were prepared based on the four formulations shown in Table 3. Using 13 healthy adults as subjects, the keratinous skin on both flexion sides of the forearm was removed, and markings were made at 4 locations. Next, as a pre-measurement, the skin moisture content was measured using a skin moisture meter beauty sensor manufactured by Integral. The skin water content was indicated by a skin water content score by the measuring method of the device. Next, each of the four types of seaweed packs that have been left standing at room temperature is applied to each of the four marked skins, and then applied.
Immediately after the seaweed pack was wiped off after leaving still for 5 minutes, after being wiped off and left for 5 minutes (after leaving 10 minutes after application), the skin water content was measured. Further, the measurement portion (the portion where the seaweed pack was wiped off) was washed with water, and then the skin water content was measured again. Each measurement was repeated 3 times. Washing with water was performed in order to remove residual components of the seaweed pack that may be attached to the measurement portion.

Immediately after pre-measurement and wiping (indicated as front-immediately after in the figure), after standing for 5 minutes after pre-measurement and wiping (before-5 minutes), after pre-measurement and after washing (before-after washing), The skin moisture content score indicated by the difference in skin moisture content is shown in FIG. As a result of performing a t-test corresponding to the two groups, the statistical analysis was “deep water + kelp (neutralized kelp paste) + olive 4
% Has a significantly higher skin moisture content score immediately after and after washing with water than “kelp + water”, and “kelp + water + olive 4%”
Immediately after that, the skin moisture content score was significantly higher immediately after 5 minutes and after washing with water. Therefore, "deep water +
It was shown that the moisturizing property of “kelp + olive 4%” is extremely high. Further, “deep water + kelp” was equivalent to “kelp + water” after 5 minutes, but the skin moisture content score was high after washing with water. “Kombu + water + olive 4%” had a higher skin water content score immediately after “5 minutes” and “after washing with water” than “kombu + water”. From this test result, it was confirmed that deep water and olive have a moisturizing effect. In addition, in order to confirm the presence or absence of the moisturizing effect of the deep sea water, the same amount of water was added to the water without deep sea water (“kelp + water” etc.).

[0029]

[Table 3]

With respect to the pack of "deep water + kelp + olive 4%", not only the forearm but also the face was tested. 9 healthy adults (3 men, 6 women, age 25-
50 years old, average 34 ± 7 years old), the above pack was applied on the face before going to bed at night, and the top of the pack was applied with Saran wrap 15
Cover for minutes. After that, wash your face with hot water. This series of actions is repeated for 3 consecutive days. This test was conducted between September 21 and September 30, 2002. After the start of the test, the presence or absence of a skin rash or rash on the face was visually confirmed every morning, and no skin rash or rash was observed in all 9 people for 3 days. In addition, every morning, when asked about the moisturizing feeling, all 9 people felt that the skin was moisturized as compared to when sleeping without packing.

Test Example 2 Based on the formulation shown in Table 4, the sodium concentration of the conventional product was
The skin irritation was evaluated for two kinds of kelp packs, which were made of 2.5% algopack and kelp as the main components and had sodium concentrations of 2.5% and 2.8%. In addition, kelp (neutralized kelp paste)
In the case of only, the skin irritation was significantly lower than that of the conventional product, and is not shown in FIG. Therefore, in order to make an accurate comparison with the conventional product, NaCl was added to the kelp to adjust the sodium concentration to the same level or higher, and the evaluation was performed this time. Argopack is composed of red algae, Lithotamnu and Laminaria as main components, and is made into a paste form by adding twice the amount of deep water. On the other hand, since the kelp pack was mainly composed of mackerel and water was used, the sodium concentration was set to 2.5% and 2.8% by adding sodium chloride. Twelve healthy adults were used as subjects, and the keratinous skin on both flexion sides of the forearm was removed, and markings were made at three locations.

Next, the three types of packs left at room temperature were
Apply to each of the 3 marked skins, leave it for 5 minutes, wash it with water, and check if the skin was tingling with a stimulating sensation of 4 points, with a skin irritation score of 0.5 points (tingling sensation). Was answered. The results are shown in Fig. 2. As a result of Friedman's test, "2.5% N
“Argopack” had the highest skin irritation, and “2.5% Na kelp pack” had significantly lower skin irritation than the other packs. Therefore, even if the same sodium concentration was used, it was shown that the skin irritation was lower in the case of using Macombus than in the red algae containing Argopack as the main component.

[0033]

[Table 4]

Test Example 3 Based on the formulation shown in Table 5, Argopack having a sodium concentration of 1.7% and kelp were the main components, and the sodium concentration was
The skin irritation of two kinds of kelp packs prepared with 2.5% and 2.1% was evaluated. Argopack is composed of red algae, Lithotamnu and Laminaria as main components, and is made into a paste form by adding twice the amount of water. On the other hand, the kelp pack contained mackerel as the main component, and the sodium concentration was set to 2.5% and 2.1% by adding sodium chloride. Eleven healthy adults were used as subjects, and the keratinous skin on both flexion sides of the forearm was removed, and markings were made at three locations.

Next, the three types of packs left at room temperature were
Apply to each of the 3 marked skins, leave it for 5 minutes, wash it with water, and check if the skin was tingling with a stimulating sensation of 4 points, with a skin irritation score of 0.5 points (tingling sensation). Was answered. The results are shown in Fig. 3. As a result of Friedman's test, "1.7% N
The "a algo pack" had the highest skin irritation, and the "2.1% Na kelp pack" had significantly lower skin irritation than the other packs. Therefore, the skin irritation was lower and the sodium concentration was higher when Macombus was used than the red alga, which is the main ingredient of Argopack.
It was shown that the skin irritation was suppressed even at 2.1%. Therefore, the following test was conducted using deep water and adding olive oil in order to suppress skin irritation.

[0036]

[Table 5]

Test Example 4 Four kinds of seaweed packs were prepared based on the four formulations shown in Table 6 and their skin irritation was evaluated. Using 13 healthy adults as subjects, the keratinous skin on both flexion sides of the forearm was removed, and markings were made at 4 locations. Next, each of the four types of seaweed packs left standing at room temperature was applied to each of the four marked skins, left standing for 5 minutes, and then washed with water to determine whether the skin was the most tingling. As points, the subjects were asked to respond with a skin irritation score (scratching sensation) in increments of 0.5. The results are shown in Fig. 4. As a result of Friedman's test, "deep water + kelp + olive 4%" had significantly lower skin irritation than other seaweed packs.

Therefore, compared to "deep water + kelp", addition of 4% of olive oil significantly suppressed the skin irritation, and it was shown that all the subjects did not feel any irritation at all. Therefore, it is shown that the addition of olive oil can eliminate the skin irritation even if deep water that increases skin irritation is used, and the advantage of deep water can be utilized in the pack without the problem of skin irritation. Became. Furthermore, it was also shown that the addition of diatomaceous earth did not enhance the irritation compared to the original "deep water + kelp".

Test Example 5 Four kinds of seaweed packs were prepared based on the four formulations shown in Table 6, and the skin moisture content score was measured in the same manner as in Test Example 1. The results are shown in Fig. 5. As a result of performing a paired t-test between the two groups, "deep water + kelp + olive 4% +
"Diatomaceous earth 5%" has the highest skin moisture content score after 5 minutes of washing with water, and also has a significantly higher skin moisture content score than "deep water + kelp".
After 5 minutes, “%” had a significantly higher skin moisture content score than “deep water + kelp”. It was shown that the addition of diatomaceous earth enhances the moisturizing property. Even if deep water was added to the pack, Test Example 4 showed that the addition of olive oil suppressed the skin irritation, but the moisturizing property was further improved, and the addition of diatomaceous earth further increased the moisturizing property. Was shown to increase.

[0040]

[Table 6]

In the formulations shown in Table 6, only the oil blending ratio was changed, and the other conditions were tested under the same conditions. It was found that when the blending ratio of the oil was higher than 10%, the skin became slimy and discomfort appeared. In addition to this finding, the effect of suppressing the skin irritation by the addition of olive oil (found in Test Example 4) and the improvement of the moisturizing property (found in Test Example 5) were taken into consideration, and the oil as a whole was judged. It is thought that it is desirable to be 2 to 10%.

Test Example 6 Three kinds of seaweed packs were prepared based on the three formulations shown in Table 7, and the skin moisture content score was measured in the same manner as in Test Example 1. The results are shown in Fig. 6. As a result of performing a paired t-test between the two groups, "sodium concentration 1.4%" or more had a significantly higher skin moisture score after washing with water than "sodium concentration 1.2%".

[0043]

[Table 7]

In Test Example 3, it was found that "2.1% Na kelp pack" had lower skin irritation than "2.5% Na kelp pack". Therefore, considering Test Examples 3 and 6, in order to improve the moisturizing property and suppress the skin irritation,
A sodium concentration of 1.4% to 2.1% is desirable.

[0045]

According to the first and second aspects of the present invention, irritation and unpleasant odors can be suppressed, the storability is excellent, and the moisturizing and heat retaining properties of the skin can be enhanced. According to the invention of claim 2, the dissolution rate of seaweed is increased.

According to the third aspect of the present invention, the moisturizing property, antibacterial property and preservability of the skin can be improved, irritation to the skin can be suppressed, and unpleasant odor can be suppressed.

According to the fourth aspect of the present invention, it is excellent in antibacterial property, storability and skin moisturizing property.

According to the invention described in claim 5 of the present invention, by adding an essential oil according to the case, it is possible to enjoy a scent of choice, reduce stress and relax.

According to the invention described in claim 6 of the present invention, it is possible to enhance the moisturizing property and to impart the heat retaining property by emitting far infrared rays of the clay mineral, and to obtain the sauna effect. Also, unpleasant odor can be suppressed.

According to the invention described in claim 7 of the present invention, it is possible to further suppress skin irritation and unpleasant odor, and to enhance the moisturizing property and heat retaining property of the skin.

According to the invention of claim 8 of the present invention, by using a pack cosmetic, it is possible to enhance the moisturizing property and heat retaining property of the skin by a simple method, to relax, and also to achieve the stress relieving effect. .

[Brief description of drawings]

FIG. 1 is a diagram showing a moisturizing property of a seaweed pack cosmetic according to the present invention.

FIG. 2 is a diagram showing the degree of skin irritation of a conventional pack cosmetic mainly composed of algopack and kelp.

FIG. 3 is a diagram showing skin irritation levels of Argopack and kelp pack cosmetics having other sodium concentrations.

FIG. 4 is a diagram showing the degree of skin irritation of a seaweed pack cosmetic according to the present invention.

FIG. 5 is a diagram showing the moisturizing properties of a diatomaceous earth-containing seaweed pack cosmetic according to the present invention.

FIG. 6 is a diagram showing the moisturizing property with respect to changes in sodium concentration.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Feng Xu             Toyama Prefecture Toyama City Futakucho 5-6-4 Panamezo             3 No. 2 No. 204 (72) Inventor Yasuhiro Funatsu             1-22-1 Horikawa Koizumicho, Toyama City, Toyama Prefecture (72) Inventor Kaoru Motoe             7-4-1 Shimizucho, Toyama City, Toyama Prefecture (72) Inventor Takashi Takano             53 Aramachi, Kurobe City, Toyama Prefecture F-term (reference) 4C083 AA021 AA022 AA111 AA112                       AA121 AA122 AA162 AB051                       AB052 AB172 AB311 AB312                       AB441 AB442 AC302 BB13                       CC07 DD22 EE06 EE07 EE10                       EE12

Claims (8)

[Claims] 1. An external preparation for skin, comprising seaweed dissolved in a monovalent alkaline aqueous solution to form a paste and neutralized. 2. The external preparation for skin according to claim 1, wherein the monovalent alkali is sodium carbonate. 3. The external preparation for skin according to claim 1 or 2, which contains oil. 4. The external preparation for skin according to claim 1, 2 or 3, wherein mineral water is blended. 5. The external preparation for skin according to claim 1, wherein the essential oil is blended. 6. The external preparation for skin according to claim 1, wherein a clay mineral is added. 7. Mineral water and oil are mixed, the sodium concentration is 1.4-2.1%, and the oil is 2-1 of the total.
The external preparation for skin according to claim 1, 2, 5 or 6, which is 0%. 8. The external preparation for skin according to any one of claims 1 to 7, which is a pack cosmetic.