Cosmetic and method for producing cosmetic

Abstract

To provide a cosmetic for improving moisture retaining power and a method for producing a cosmetic without requiring steps such as temperature adjustment, filtration and purification.SOLUTION: There is provided a cosmetic mainly composed of a water component, wherein the water component contains hot spring water containing sodium ions, potassium ions, magnesium ions and calcium ions, is hypotonic, and has a salt concentration of 0.1% or more and less than 0.9%. In addition, there is provided a method for producing a cosmetic which comprises: a hot spring water filling step of filling sterile hot spring water into a sterilized container through piping and filling only the hot spring water as the water component without being exposed to outside air; a chelating agent addition step of adding and stirring a chelating agent within 5 minutes after filling the hot spring water; and a humectant addition step of adding and stirring a humectant to the hot spring water.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a cosmetic product and a method for producing the cosmetic product. [Background technology]

[0002] As an example of a cosmetic containing ingredients derived from hot springs, Patent Document 1 discloses a cosmetic characterized by having as its main ingredients moor hot spring water and white crane reishi mushroom, white crane reishi mushroom extract, or white crane reishi mushroom extract powder.

[0003] Furthermore, as described in Non-Patent Document 1, the importance of natural moisturizing factors (NMFs) contained in the skin is recognized in improving the skin's moisturizing ability. Part of the composition of these NMFs contains specific electrolytes such as sodium ions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-239146 [Non-patent literature]

[0005] [Non-Patent Document 1] Toshiyuki Takemura, "Effectiveness of Moisturizing Preparations - Moisturizing Mechanism of the Stratum Corneum", Pharmacia, Vol. 28, No. 1, 1992, 61-65 Summary of the Invention [Problem to be solved by the invention]

[0006] The technology disclosed in Patent Document 1 promotes the improvement of the skin's moisturizing ability by adding and mixing specific moisturizers such as Hakutsuru Reishi, Hakutsuru Reishi extract, or Hakutsuru Reishi extract powder to hot spring water.

[0007] However, although Patent Document 1 mentions that the moisturizer described therein contains sodium ions, it makes no specific mention of NMF. Furthermore, there is no mention of the effect of specific electrolytes contained in hot spring water on skin moisturizing, or of the osmotic pressure of hot spring water. Furthermore, the specific moisturizer described in Patent Document 1 contains natural products, and requires processes such as extraction of active ingredients from raw materials, filtration, and purification and concentration for sterilization of bacteria and viruses. This poses the problem of labor-intensive manufacturing and high manufacturing costs.

[0008] Non-Patent Document 1 only explains the skin's moisturizing mechanism, and does not explain cosmetics containing hot spring water as an ingredient.

[0009] Therefore, the inventors of the present invention have attempted to solve the problem of improving moisturizing power by a means different from that of the prior art. Specifically, they have focused on the fact that the electrolytes contained in hot spring water constitute part of the skin's natural moisturizing factors (NMF), that they are similar to the electrolytes contained in human body fluids, and that hot spring water has hypotonic properties.

[0010] The present invention has been made in consideration of the above points, and aims to provide a cosmetic that improves moisturizing power by focusing on the electrolytes contained in hot spring water and the osmotic pressure of hot spring water. Another aim of the present invention is to provide a method for producing a cosmetic that can maintain hygienic conditions without requiring steps such as temperature control treatment, filtration, or purification. [Means for solving the problem]

[0011] The cosmetic of the present invention comprises: A cosmetic composition containing water as a main component, The cosmetic preparation is characterized in that the water component includes hot spring water containing sodium ions, potassium ions, magnesium ions, and calcium ions, the water component is hypotonic, and the salt concentration is 0.1% or more and less than 0.9%.

[0012] The cosmetic of the present invention can provide a cosmetic with excellent moisturizing power. This is because the cations (sodium ions, potassium ions, magnesium ions, calcium ions) contained in the hot spring water of the present invention are ionic components that constitute part of the NMF, and the NMF helps to retain moisture in the stratum corneum. Furthermore, the water components containing the hot spring water are hypotonic, and when the salt concentration is 0.1% or more, a predetermined amount of sodium ions is contained. When the salt concentration is less than 0.9%, the salt concentration is lower than that of body fluids, and the skin easily absorbs moisture due to osmotic pressure, thereby improving moisturizing power.

[0013] Preferred examples of the cosmetic of the present invention are: Hot spring water is characterized by containing 78% to 92% sodium ions when the total concentration of sodium ions, potassium ions, magnesium ions, and calcium ions is taken as 100%.

[0014] A preferred example of the cosmetic of the present invention contains cations that constitute human body fluids, and the proportion of these cations is similar to the proportion of cations in human body fluids, particularly extracellular fluid, making it possible to reduce the load when the cosmetic is applied and penetrates into the capillaries.

[0015] Preferred examples of the cosmetic of the present invention are: It is characterized in that the water component further contains metasilicic acid.

[0016] According to a preferred example of the cosmetic of the present invention, It contains metasilicic acid, which promotes skin metabolism and regulates moisturizing ceramides, further improving moisturizing power.

[0017] Preferred examples of the cosmetic of the present invention are: The water component is ultra-hard water.

[0018] According to a preferred example of the cosmetic of the present invention, It is rich in calcium, which promotes metabolism and activates moisturizing ingredients in skin cells, and magnesium, which helps restore skin barrier function, thereby improving moisturizing power.

[0019] Preferred examples of the cosmetic of the present invention are: The pH of the water component is 7.1 to 7.4.

[0020] According to a preferred example of the cosmetic of the present invention, The pH of the water component contained in the cosmetic is 7.1 to 7.4, which is close to the normal pH range of blood, 7.35 to 7.45, so the load on the blood vessels when it penetrates can be reduced.

[0021] Preferred examples of the cosmetic of the present invention are: The oxidation-reduction potential of the water component is -80 mV to +270 mV.

[0022] According to a preferred example of the cosmetic of the present invention, The water component has a pH range of 7.1 to 7.4 and an oxidation-reduction potential of -80 mV to +270 mV, which prevents oxidation of the skin and improves moisturizing power compared to using only purified water, which has an oxidation-reduction potential of approximately 500 mV, which is used in general cosmetics.

[0023] Preferred examples of the cosmetic of the present invention are: It is characterized in that a chelating agent is added to the water component.

[0024] According to a preferred example of the cosmetic of the present invention, discoloration and precipitation caused by metal ions can be suppressed, thereby preventing deterioration in product quality and improving storage stability such as appearance.

[0025] Preferred examples of the cosmetic of the present invention are: It is characterized by the addition of a moisturizing agent to the water component.

[0026] In a preferred example of the cosmetic of the present invention, the addition of a moisturizing agent further improves the moisturizing power and improves the feel in use, such as the ability to blend well with the skin.

[0027] The method for producing a cosmetic of the present invention comprises the steps of: The method for producing the above cosmetic product, a hot spring water filling step of filling a sterilized container with sterile hot spring water through a pipe without exposing the container to outside air, and filling the container with only the hot spring water as the water component; a chelating agent addition step of adding and stirring a chelating agent within 5 minutes after filling the hot spring water; a moisturizing agent addition step of adding a moisturizing agent to the hot spring water and stirring the water; The present invention is characterized in that it includes:

[0028] The method for producing a cosmetic of the present invention comprises the steps of: The method for producing the above cosmetic product, an additive preparation step in which a chelating agent and a moisturizing agent are placed in a sterilized container and stirred as needed; a hot spring water filling step of filling the container with sterile hot spring water through a pipe without exposing it to outside air, stirring the water, and filling the container with only the hot spring water as the water component; The present invention is characterized in that it includes:

[0029] According to these methods for producing cosmetics of the present invention, cosmetics that can be maintained in hygienic conditions can be produced without, in principle, requiring steps such as temperature control treatment, filtration, and purification. [Effects of the Invention]

[0030] As described above, the cosmetic preparation according to the present invention can provide a cosmetic preparation that improves moisturizing power by focusing on the electrolytes contained in hot spring water and the osmotic pressure of hot spring water. Furthermore, it can provide a method for producing a cosmetic preparation that can maintain hygienic conditions without requiring steps such as temperature control treatment, filtration, or purification. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a table showing analytical data of hot spring water contained in the cosmetic of the present invention. [Figure 2] (A) A table showing the electrolytes (cations) contained in extracellular fluid. (B) A table showing the electrolytes (sodium ions, potassium ions, magnesium ions, calcium ions) contained in hot spring water. (C) A table showing the ratios of sodium ions, potassium ions, magnesium ions, and calcium ions contained in extracellular fluid and hot spring water. [Figure 3] FIG. 1 is a process diagram of a method for producing a cosmetic according to a first embodiment of the present invention. [Figure 4] FIG. 3 is a process diagram of a cosmetic manufacturing method according to a second embodiment of the present invention. [Figure 5] 1 is a table showing the ratio of hot spring water to purified water and analytical data. [Figure 6] 1 is a table showing the formulation and moisturizing power evaluation results of the cosmetic of the present invention. [Figure 7] 1 is a table showing the results of evaluation of bacteria in hot spring water used in the cosmetic of the present invention and in cosmetics produced by the cosmetic production method of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] Hereinafter, embodiments of the cosmetic and the method for producing the cosmetic of the present invention will be described in detail with reference to the accompanying drawings.

[0033] [Cosmetics] The hot spring water contained in the water component, which is the main component of the cosmetic according to this embodiment, contains sodium ions, potassium ions, magnesium ions, and calcium ions. For example, it is preferable to use hot spring water from near No. 604, Matsunoki, Nagashima-cho, Kuwana City, Mie Prefecture, with a spring quality as shown in Figure 1. In the cosmetic according to this embodiment, "hot spring water" refers to hot spring water from near No. 604, Matsunoki, Nagashima-cho, Kuwana City, Mie Prefecture, or a mixture of this hot spring water and purified water. However, other hot spring waters can also be used as long as their components are similar to those of the above-mentioned water component. Note that other raw materials that make up the cosmetic may also contain water, but this water is not considered to be a water component.

[0034] As shown in Figure 1, hot spring water contains sodium ions (Na + ) is 2240mg, 97.43mval, 77.94mval%, potassium ion (K + ) is 23.0mg, 0.59mval, 0.47mval%, magnesium ion (Mg 2+ ) is 50.1mg, 4.12mval, 3.30mval%, calcium ion (Ca 2+ ) is contained in the hot spring water at 444.1 mg, 22.16 mval, and 17.73 mval%. "mval" is a unit of electrolyte concentration, and is the number of equivalents of electrolyte dissolved in 1 kg of hot spring water. "mval%" is the ratio of the mval values ​​of cations and anions to the sum of their respective values.

[0035] Furthermore, when the total concentration of sodium ions, potassium ions, magnesium ions, and calcium ions is taken as 100%, the hot spring water preferably contains sodium ions at a ratio of 78.4% to 91.6%. As for other ions, it is preferable that the hot spring water contains potassium ions at a ratio of 0.5 to 3.2%, magnesium ions at a ratio of 1.9 to 3.3%, and calcium ions at a ratio of 3.2 to 17.8%.

[0036] The reason for the above ratio is as follows: Body fluids are divided into extracellular fluid and intracellular fluid, and extracellular fluid in particular fills the spaces between cells and communicates with the blood through the capillary walls. Therefore, it is considered preferable that the electrolyte ratio of hot spring water, or the water components as a whole, be similar to the electrolyte ratio of the extracellular fluid, which will be explained below. This is because it is possible to reduce the load when penetrating into the capillaries.

[0037] The electrolytes (cations) in extracellular fluid are shown in Figure 2(A) (Sugi Haruo et al., Human Functional Physiology, 2nd Revised Edition, Nanzando, 1991). Here, "mEq / L" is a unit of electrolyte concentration, and is the number of equivalents of an electrolyte dissolved in 1 L of solution. If the total concentration of sodium ions, potassium ions, magnesium ions, and calcium ions is set to 100%, and their ratios are calculated, it is found that sodium ions, which play an important role in regulating the osmotic pressure of body fluids, account for the highest proportion at 91.6% (Figure 2(C)). Therefore, it is preferable that hot spring water used in cosmetics also have a higher proportion of sodium ions than the other cations mentioned above.

[0038] Figure 2(B) shows an excerpt from Figure 1 for the sodium ions, potassium ions, magnesium ions, and calcium ions contained in hot spring water. As mentioned above, "mval" is the equivalent number of electrolytes dissolved in 1 kg of hot spring water. Although the unit notation is different, the density of hot spring water is approximately 1 g / cm 3 Therefore, in this case, "mval" and the above-mentioned "mEq / L" have substantially the same meaning and can be compared. Therefore, when the total concentration of these sodium ions, potassium ions, magnesium ions, and calcium ions is taken as 100%, the ratio is calculated and it is found that the hot spring water of this embodiment also has a higher proportion of sodium ions than the other cations mentioned above, at 78.4% (FIG. 2(C)). From the above, the lower limit of sodium ions was set to 78.4% and the upper limit to 91.6%. The same calculations were made for the other ions. For convenience, the above ratios will be expressed as "%".

[0039] The hot spring water used should be hypotonic. Here, "hypotonic" refers to hot spring water in which the amount of dissolved substances (excluding gaseous substances) per 1 kg is less than 8000 mg / kg, according to the Guidelines for Mineral Spring Analysis. More preferably, the amount is 7121 mg / kg or more but less than 8000 mg / kg. The water components used should be such that the amount of dissolved substances (excluding gaseous substances) per 1 kg of water components is 1780 mg / kg or more but less than 8000 mg / kg.

[0040] The salinity of hot spring water is preferably less than 0.9%, which is the salinity of body fluids. More preferably, it is 0.6% or more and less than 0.9% (the lower limit of the salinity is the salinity shown in FIG. 5 rounded to one decimal place; the same applies below). The salinity of the water component is preferably 0.1% or more and less than 0.9%. A salinity of 0.1% or more results in the inclusion of a predetermined amount of sodium ions, and a salinity of less than 0.9% is lower than the salinity of body fluids, allowing the skin to more easily absorb moisture due to the difference in osmotic pressure. Furthermore, it is preferable that the water component contains 24.36 mval to 97.43 mval of sodium ions, 0.15 mval to 0.59 mval of potassium ions, 1.03 mval to 4.12 mval of magnesium ions, and 5.54 mval to 22.16 mval of calcium ions per kg of water component.

[0041] Preferably, the hot spring water further contains metasilicic acid. This is because metasilicic acid promotes skin metabolism and regulates moisturizing ceramides, thereby improving moisturizing power. The amount of metasilicic acid contained in the hot spring water is 71.7 mg, which is preferably 50 mg or more, as stipulated in Article 2 of the Hot Springs Act. In this embodiment, the water component preferably contains 17.9 mg to 71.7 mg.

[0042] The hot spring water is preferably ultra-hard water. According to the Ministry of Health, Labor and Welfare, "ultra-hard water" refers to water in which the amount of calcium ions and magnesium ions converted into the corresponding amount of calcium carbonate (CaCO3) is 180 mg / L or more. The hardness of this hot spring water is 1315.7 mg / L. In this embodiment, the water preferably contains 328.9 mg / L to 1315.7 mg / L of water components. This results in an abundance of calcium and magnesium, which can improve moisturizing power.

[0043] The pH of hot spring water is 7.3 to 7.4. In this embodiment, the pH of the water component is preferably 7.1 to 7.4. The normal pH range of blood is 7.35 to 7.45, and a pH closer to that of blood can reduce the load on the capillaries when the water penetrates the capillaries.

[0044] Furthermore, the redox potential of hot spring water is -80 mV at a pH of 7.4. The redox potential of the water components in this embodiment is preferably -80 mV to +270 mV at a pH of 7.1 to 7.4. This is because, compared to purified water used in general cosmetics, which has a redox potential of approximately 500 mV, the water components used have reducing power, which can prevent skin oxidation and improve moisturizing power.

[0045] The above-mentioned values ​​for the amount of dissolved substances (excluding gaseous substances), mVal value of cations, salinity, amount of metasilicic acid, hardness, pH, and redox potential are based on the values ​​for Components 1 to 3 shown in Figures 1 and 5. As will be described later, among Components 1 to 4 shown in Figure 5, 1 had the highest moisturizing effect, followed by 2 and 3, and 4 had the lowest effect (Figure 6). For this reason, it can be said that the values ​​for Components 1 to 3 are preferred, those for Components 1 and 2 are more preferred, and those for Component 1 are most preferred.

[0046] A chelating agent is preferably added to the cosmetic composition according to this embodiment. Common chelating agents, such as ethylenediaminetetraacetic acid (EDTA), etidronic acid, edetic acid, citric acid, and their sodium salts, may be used alone or in combination. In this embodiment, citric acid and sodium citrate are used. This combination can adjust the pH of the cosmetic composition as a whole while providing a chelating effect that can inhibit precipitation derived from metal ions. Furthermore, depending on the blending ratio, if the cosmetic composition is to be applied to the skin with reduced irritation, it can be adjusted to a neutral or weakly acidic pH to approach the skin's pH. Alternatively, if the cosmetic composition is to be applied to the skin with reduced irritation, such as when considering the load on the capillaries when penetrating the skin or to soften hardened keratin on the skin surface, it can be adjusted to a weakly basic pH. Therefore, if the load on the capillaries is to be reduced, the pH is adjusted to 7.1 to 7.4. If the cosmetic composition is to be applied with reduced irritation to the skin, the pH is adjusted to 6.0 to 7.0, preferably 6.0 to 6.8.

[0047] It is preferable to add a moisturizing agent to the cosmetic composition according to this embodiment. Common moisturizing agents such as 1,2-hexanediol, 1,3-butylene glycol, dipropylene glycol, glycerin, and urea may be used alone or in combination. In this embodiment, glycerin and urea are used. This combination has been used in a wide variety of cosmetic compositions and has a proven track record, and is expected to ensure quality and safety, improve usability, and further enhance moisturizing power.

[0048] Although not particularly limited, in this embodiment, the water component consisting of hot spring water and purified water is 94.99 to 100 mass% (however, the hot spring water in the water component is 25 to 100 mass% when the water component is 100 mass%), and the chelating agents citric acid 0 to 0.01 mass% and sodium citrate 0 to 1 mass% are contained, and the moisturizing agents glycerin 0 to 3 mass% and urea 0 to 1 mass% are contained. This is because if the hot spring water in the water component is less than 25 mass%, the moisturizing power may not be fully exerted. Furthermore, when hot spring water containing iron ions is used as in this embodiment, it is recommended to add a chelating agent because the iron ions may oxidize and turn brown, causing hot spring sediment. Furthermore, it is recommended to add a moisturizing agent to improve the feel when used.

[0049] Next, the method for producing the cosmetic of the present invention will be described in detail with reference to the accompanying drawings.

[0050] [Cosmetic manufacturing method] [First embodiment] The method for producing a cosmetic according to this embodiment will be described below. As shown in Fig. 3, the method includes a hot spring water filling step S101, a chelating agent adding step S102, and a moisturizing agent adding step S103.

[0051] The hot spring water filling process S101 is a process of filling a sterilized container with sterile hot spring water. Here, "sterile" and "sterile state" refer to a general bacterial count of 0 CFU / mL and a negative coliform count, as shown in Figure 7. This was measured using the testing method specified in the "Notice on Partial Revision of Hot Spring Usage Standards" (No. 075001002, dated October 1, 2007). In the manufacturing method of this embodiment, only hot spring water from near 604 Matsunoki, Nagashima-cho, Kuwana City, Mie Prefecture is used as the "water component." Purified water is not used. Note that other raw materials that make up the cosmetic product may contain water, but this water is not considered a water component. The hot spring water is pumped from 1,500 meters underground using a submersible pump. At this time, the hot spring water temperature is 49°C (air temperature: 12°C). This hot spring water is filled into a sterilized container through piping without being exposed to outside air. "Keeping the water out of contact with the outside air" means that the hot spring water is not exposed to the air from the submersible pump to the outlet of the piping. This maintains a hygienic condition and prevents oxidation of the hot spring water. Valves are installed in the piping, and the hot spring water is filled into the container by adjusting the valves.

[0052] Because the hot spring water of this embodiment contains natural gases such as methane gas (gas:water ratio 1:11, gas flow rate 20 L / min), when the hot spring water is filled into the container through the pipe, the gases contained in the hot spring water and the steam generated by the hot spring water are released into the container. Therefore, the hot spring water accumulating at the bottom of the container is isolated from the atmosphere by the gases, and the hot spring water is substantially isolated from the outside air while filling the container. Furthermore, even after filling the container with hot spring water, gases are released for a while. Therefore, by promptly performing the chelating agent addition step S102 and the humectant addition step S103, or by placing an appropriate lid on the container, the hot spring water can be kept substantially isolated from the outside air. Furthermore, the natural gas in the hot spring water of this embodiment has a gas specific gravity of 0.63. However, even if hot spring water containing carbon dioxide, which has a gas specific gravity of 1 or higher, is used, the liquid surface is covered with carbon dioxide, and thus the hot spring water is substantially isolated from the outside air while filling the container. However, to prevent oxidation, the atmosphere inside the container can be purged with an inert gas.

[0053] The chelating agent addition step S102 is a step of adding and stirring a chelating agent within a predetermined time period. The chelating agent is preferably added and stirred within 5 minutes after filling the hot spring water in the hot spring water filling step S101. If the time exceeds 5 minutes, the chelating agent may oxidize and turn brown, potentially producing hot spring precipitates derived from iron ions. More preferably, the chelating agent is added and stirred within 1 minute after filling the hot spring water. A general stirrer can be used for this stirring. Alternatively, the sealed container may be vibrated (the same applies to the moisturizing agent addition step and other embodiments described below).

[0054] The moisturizing agent addition step S103 is a step of adding a moisturizing agent to the hot spring water and stirring the mixture. To increase the dissolution efficiency of the moisturizing agent, it is preferable to add the moisturizing agent and stir the mixture before the hot spring water reaches a temperature of 45° C. The chelating agent addition step S102 and the moisturizing agent addition step S103 may be performed simultaneously, or their orders may be reversed.

[0055] According to this embodiment, the chelating agent and moisturizing agent can be mixed in stages while checking their dissolution, and the hot spring water filling step S101, the chelating agent addition step S102, and the moisturizing agent addition step S103 can be carried out simultaneously. [Second embodiment] The method for producing cosmetics according to this embodiment will be described. As shown in Figure 4, the method includes an additive preparation step S201 and a hot spring water filling step S101. Here, the meanings of terms such as "sterile," "sterile state," "water components," and "not exposed to the outside air" are the same as those explained in the first embodiment.

[0056] The additive preparation step S201 is a step in which a chelating agent and a humectant are added to a sterilized container in advance and stirred as necessary. The chelating agent and humectant can also be added simultaneously. For example, in this embodiment, citric acid and sodium citrate are used as chelating agents, and glycerin and urea are used as humectants. To improve stirring efficiency, the order in which the ingredients are added may be changed depending on the mixed state of the ingredients, such as by first adding liquid glycerin to the container and then adding the other ingredients while stirring. Alternatively, in the subsequent hot spring water filling step S101, the ingredients may be mixed as a whole in anticipation of dissolution. The hot spring water filling step S101 is the same step as described in the first embodiment, so a detailed description will be omitted.

[0057] According to this embodiment, the hot spring water reacts with the chelating agent immediately after being filled, so the condition in the chelating agent addition step S102 of the first embodiment that the chelating agent be added "within 5 minutes after being filled with hot spring water" can be omitted. Also, in the moisturizing agent addition step S103 of the first embodiment, the hot spring water can be stirred without worrying about a drop in temperature. [Example]

[0058] As shown in Figure 5, components 1 to 3 were prepared by varying the ratio of hot spring water to purified water. Component 4 was made of purified water only. (Component 2 was made of hot spring water:purified water = 1:1, and component 3 was made of hot spring water:purified water = 1:3.) The hot spring water used was from near 604 Matsunoki, Nagashima-cho, Kuwana City, Mie Prefecture, and has the spring quality shown in Figure 1. The analytical data in Figure 1 was measured by an analytical institution (Japan Water Treatment Co., Ltd.) in accordance with the Ministry of the Environment's Mineral Spring Analysis Guidelines (measurement equipment and measurement error, etc., follow the analytical institution's instructions). The purified water used was Furukawa Chemical Co., Ltd., product number 02-101.

[0059] [Dissolved matter (excluding gaseous matter), mval value of cations, salinity, metasilicic acid, hardness] The mval values ​​of dissolved substances (excluding gaseous substances) and cations in Figure 5 (Na+ , K. + , Mg 2+ , Ca 2+ ), salinity, amount of metasilicic acid, and hardness values ​​are based on the analysis data of the hot spring water shown in Figure 1, or calculated from that analysis data. The salinity was calculated by converting the amount of sodium ions into the amount of salt. The hardness was calculated from the amounts of magnesium ions and calcium ions.

[0060] [pH, redox potential] The pH in FIG. 5 was measured at a temperature of 25° C. using a handheld pH meter (manufactured by Sato Keiryoki Seisakusho Co., Ltd., model number: SK-629pHII) (II represents the Roman numeral "2"). The oxidation-reduction potential in FIG. 5 was measured at a temperature of 25° C. using a digital ORP meter (manufactured by Mother Tools Co., Ltd., model number: YK-23RP).

[0061] [Moisturizing rating] Next, using components 1 to 4 of the water component, cosmetics of Examples 1 to 4 and Comparative Examples 1 and 2 were prepared according to the formulations shown in FIG. The moisturizing properties of the prepared cosmetic were evaluated on four subjects (three women and one man). The test was conducted at 25°C by applying 1.0 mL of the cosmetic to the entire face of each subject using a spray bottle, and the moisture content of the area below the cheekbones was measured three minutes later using a moisture checker (manufactured by Scalar Corporation, model number: MY-808S). The evaluation results are shown in Figure 6.

[0062] The moisturizing evaluation results of Example 1 and Comparative Example 1, and Example 2 and Comparative Example 2 in Figure 6 show that when the water component is hot spring water, the moisturizing power is higher than when the water component is purified water, regardless of individual differences. Furthermore, when Example 1 and Comparative Example 2 are compared, the results show that hot spring water alone has approximately the same moisturizing power as purified water containing moisturizing agents, etc. Furthermore, the results of Examples 2 to 4, in which the blend ratio of purified water and hot spring water was changed, also show that the moisturizing power tends to increase as the ratio of hot spring water increases.

[0063] [Bacteria testing] The cosmetic obtained by the manufacturing method of the first embodiment for the hot spring water and Example 2 in Figure 6 was collected in a 1000 mL container, sealed, and stored, and then analyzed by an analytical institution (Mie Prefecture Environmental Conservation Corporation, a general incorporated association) using the testing method specified in the "Partial Amendment to Hot Spring Usage Standards (Notice)" No. 075001002 of the Environmental Protection Agency of Japan, dated October 1, 2007. The evaluation results are shown in Figure 7.

[0064] The results of the bacterial test in Figure 7 show that the hot spring water is in a sterile state. Furthermore, for the cosmetic obtained by the manufacturing method of the first embodiment, two days after manufacturing, the general bacteria count was 15 CFU / mL and the coliform bacteria count was negative, and three months after manufacturing, the general bacteria count was 43 CFU / mL and the coliform bacteria count was negative, demonstrating that a hygienic state has been maintained. Incidentally, the standard values ​​for item testing for drinking mineral springs (Notice No. 075001002, October 1, 2007, "Regarding Partial Revision of Hot Spring Usage Standards") are 100 CFU / mL or less for general bacteria and no detectable coliform bacteria.

[0065] As explained above, the cosmetic of this embodiment contains hot spring water, which contains water as the main component and sodium ions, potassium ions, magnesium ions, and calcium ions. Furthermore, when the water component is hypotonic and the above-mentioned electrolytes, particularly sodium ions, are present at a predetermined concentration or higher, moisturizing power can be improved. This is thought to be due to the osmotic pressure of the hot spring water, as well as the fact that the sodium ions, potassium ions, magnesium ions, and calcium ions contained in the hot spring water are ionic components that make up part of the NMF. Furthermore, these cations are the same ions as those contained in human body fluids. It is believed that applying a cosmetic containing these cations to the skin regulates the electrolyte concentration in the capillaries under the skin due to osmotic pressure, improving vascular condition, thereby allowing essential nutrients and moisture to be distributed to the skin, thereby improving moisturizing power.

[0066] Furthermore, according to the cosmetic production method of this embodiment, temperature control is not required by utilizing the temperature of the hot spring water. Furthermore, by adding a chelating agent to suppress hot spring precipitation, processes such as filtration and purification are not required. Furthermore, a hygienic state can be maintained for a long period of time without the addition of preservatives, etc. This reduces the production cost of the cosmetic. Furthermore, a low redox potential can be maintained even after many days have passed since production. For example, the value of a product opened one month ago was 31 mV, while the value of an unopened product left unopened for four months was 45 mV. These factors are believed to be responsible for maintaining a hygienic state and a low redox potential, as the cosmetic production method of this embodiment fills the container with hot spring water without exposing it to outside air through a piping system, and because gases, etc., released from the hot spring water prevent the hot spring water from coming into contact with outside air even during filling.

[0067] The above-described cosmetic preparations and cosmetic preparation manufacturing methods are merely examples of the present invention, and their configurations can be modified as appropriate without departing from the spirit of the invention. For example, cosmetic emulsions and the like can be manufactured by adding oil components, emulsifiers, and the like to the cosmetic preparations according to this embodiment and the cosmetic preparations manufactured by the manufacturing method of this embodiment. In this case, the cosmetic preparations according to this embodiment are used as ingredients for the cosmetic emulsion.

Claims

1. A cosmetic composition containing water as a main component, The cosmetic preparation is characterized in that the water component includes hot spring water containing sodium ions, potassium ions, magnesium ions, and calcium ions, the water component is hypotonic, and the salt concentration is 0.1% or more and less than 0.9%.

2. 2. The cosmetic preparation according to claim 1, wherein the hot spring water contains 78% to 92% sodium ions when the total concentration of sodium ions, potassium ions, magnesium ions, and calcium ions is taken as 100%.

3. 3. The cosmetic preparation according to claim 1, further comprising metasilicic acid in the water component.

4. 3. The cosmetic preparation according to claim 1, wherein the water component is ultra-hard water.

5. 3. The cosmetic preparation according to claim 1, wherein the pH of the water component is 7.1 to 7.

4.

6. 6. The cosmetic according to claim 5, wherein the oxidation-reduction potential of the water component is −80 mV to +270 mV.

7. 3. The cosmetic preparation according to claim 1, wherein a chelating agent is added to the water component.

8. 8. The cosmetic according to claim 7, wherein a moisturizing agent is added to the water component.

9. A method for producing the cosmetic according to claim 8, a hot spring water filling step of filling a sterilized container with sterile hot spring water through a pipe without exposing the container to outside air, and filling the container with only the hot spring water as the water component; a chelating agent addition step of adding and stirring a chelating agent within 5 minutes after filling the hot spring water; a moisturizing agent addition step of adding a moisturizing agent to the hot spring water and stirring the water; A method for producing a cosmetic, comprising:

10. A method for producing the cosmetic according to claim 8, an additive preparation step in which a chelating agent and a moisturizing agent are placed in a sterilized container and stirred as needed; a hot spring water filling step of filling the container with sterile hot spring water through a pipe without exposing it to outside air, stirring the water, and filling the container with only the hot spring water as the water component; A method for producing a cosmetic, comprising:

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