JP6719934B2 - Transparent to translucent cosmetics - Google Patents

Description

The present invention relates to a transparent to translucent cosmetic composition containing a humus extract, an α-hydroxy acid or a salt thereof, and a chelating agent derived from an aminocarboxylic acid and a specific surfactant, and more specifically, to prevent precipitation of precipitation. In addition, the present invention relates to a cosmetic that has both a feeling of use and stability of the preparation.

Cosmetics contain various ingredients with the expectation of efficacy and effects. Among them, transparent to translucent cosmetics are visually recognizable, such as being colored in appearance depending on the components they contain or becoming cloudy in the emulsified state, but on the other hand, precipitation or transparency over time It is likely to affect the stability of the formulation such as changes. A technique of containing a chelating agent or an α-hydroxy acid is known to suppress the generation of precipitates with the passage of time, but this may sometimes affect the feeling of use such as stickiness.
Therefore, various techniques using a surfactant have been studied for the purpose of dispersing or solubilizing such components. On the other hand, in order to improve the feeling of use such as stickiness, a technique for suppressing stickiness of cosmetic ingredients and surfactants by containing an oil agent is known, but it may affect the change in transparency over time. ..

There is a humus extract, which is one of the beauty ingredients. This is because ground plants, plants such as macro/microalgae (broadly defined), seafood and other inorganic substances are deposited on the bottom of the sea, marshes, ponds and lakes, and these are raised on the surface of the earth, and on the surface of the forest. Plants (in a broad sense) such as deposited ones and deposits containing them have been decomposed and organized by anaerobic microorganisms over a long period of time. Techniques related to this are known (see Patent Documents 1 and 2). Further, this humus soil extract is known to have sterilizing effects and hair damage reducing effects (see Patent Documents 3 and 4), but there are still many unclear points.

As described above, since the humus extract has various compositional components, it is possible to include it in a transparent to translucent cosmetic composition, but the stability of the formulation such as the occurrence of precipitation or change in transparency over time and It is difficult to solve these problems at the same time because many effects such as stickiness affect the usability of the preparation.

JP, 2000-136140, A JP, 2006-181460, A JP, 2003-267821, A JP, 2010-270063, A

Therefore, even if the humus extract is contained, it is an object to provide a transparent to translucent cosmetic composition which has excellent stability of the formulation such as no precipitation over time and no change in transparency, and is excellent in non-stickiness. And

As a result of intensive studies, the inventors of the present invention settled a humus soil extract by combining an α-hydroxy acid or a salt thereof and a chelating agent derived from an aminocarboxylic acid with a specific surfactant. It has been found that a transparent to translucent cosmetic composition in which the precipitation of the above can be prevented and also the usability and stability of the preparation can be realized. Further, it was found that not only cosmetics having better stability in the pH range of pH 4 to 7 can be obtained, but also better stability can be obtained with polyoxyethylene alkyl ether phosphoric acid or a salt thereof. The present invention has been completed based on the findings.

That is, the present invention relates to a component (a) humus extract, a component (b) an α-hydroxy acid or a salt thereof, a component (c) a chelating agent derived from an aminocarboxylic acid, and a component (d) a polyoxyethylene isostearate cured castor. It is intended to provide a transparent to translucent cosmetic which is characterized by containing oil or polyoxyethylene polyoxypropylene fatty acid ether.

Furthermore, in the components (b), (c), and (d), the content mass ratio (d)/[(b)+(c)] is 0.25 to 5, It is provided.

Further, the present invention provides a cosmetic in which the component (b) has two or more carboxyl groups in the molecule and the pH at 20° C. is 4 to 7.

Further, the present invention provides a cosmetic containing polyoxyethylene alkyl ether phosphoric acid or a salt thereof as the component (e).

INDUSTRIAL APPLICABILITY The present invention can provide a good transparent to translucent cosmetic composition without impairing the usability of the preparation such as stability of the preparation such as occurrence of precipitation or change in transparency over time and stickiness.

Hereinafter, the present invention will be described in detail. In addition, in this specification, when using-to represent a numerical range, the range shall include the numerical values at both ends.

The component (a) used in the present invention is a humus soil extract. Here, humus soil means that ground plants, plants (broadly defined) such as macro/microalgae, seafood and other inorganic substances are deposited on the bottom of the sea, marshes, ponds and lakes, or those that rise above the surface of the earth, or Plants (in a broad sense), such as those deposited on the surface of forests, and sediments containing these have been decomposed and organized by anaerobic microorganisms over a long period of time. The humus soil extract is obtained by bringing the humus soil into contact with an extraction solvent by an extraction means to obtain a component having an action effect on astringent and collecting the component. Furthermore, in order to remove unnecessary substances and sterilize, it is preferable to perform filtration means. The humus extract thus obtained may be diluted, concentrated or dried, or may be separated or purified to remove impurities, if necessary. The form of the humus soil extract is not particularly limited, and examples thereof include solid, semi-solid, and liquid forms. Specific examples thereof include solutions, suspensions, concentrated solutions, emulsions, slurries, powders, granules and solids.

As the humus soil of the humus soil extract used in the present invention, any humus soil can be used regardless of the place of origin or the state. Specifically, as the humus, it is possible to use, for example, those originating from forests, rivers, lakes, oceans, etc. Plants such as microalgae (in a broad sense) and sediments containing the same have been decomposed, synthesized, and organized by anaerobic microorganisms. Of these, humus soil originating from marine sediments, more preferably humus soil originating from the Japanese archipelago, in which oceanic sediments have risen, and humus soil originating from Kyushu is more preferred. .. The degree of humus of the humus is not particularly limited, but humus progresses and humic acid, which is a high molecular organic compound, is preferably contained. An example of a method for producing a suitable humus soil extract includes obtaining an humus soil extract by adding an extraction solvent to the humus soil, mixing and stirring the mixture, and separating the active ingredient.

Examples of the extraction means include solid-liquid extraction, liquid-liquid extraction, dipping, brewing, leaching, reflux extraction, supercritical fluid extraction, ultrasonic extraction, microwave extraction, and mixed stirring. You may combine these suitably. The separation means is not particularly limited, but examples thereof include filtration separation means and centrifugal separation means. You may use these individually or in combination. Examples of the filtration/separation means include natural filtration, vacuum filtration, and pressure filtration. At this time, a filter medium such as a cellulose filter, a glass fiber filter or a membrane filter is used, and if necessary, a filter aid such as Celite, gravel or activated carbon is used. The pore size is not particularly limited, but is preferably 0.1 to 1 μm, for example. You may combine these suitably.

In addition, there is no particular limitation on the presence or absence of the method of drying or pretreatment of the humus soil prior to the extraction and the method, and there is no particular limitation on the extraction means such as the ratio of the humus soil to the solvent and the extraction time.

The extraction solvent is not particularly limited, and either a polar solvent or a non-polar solvent may be used. Examples of this extraction solvent include water (water containing minerals such as hot spring water and deep sea water, purified water, etc.); linear, branched or cyclic alcohols; ketones such as acetone and methyl ethyl ketone; methyl acetate , Esters such as ethyl acetate; chain and cyclic ethers such as tetrahydrofuran and diethyl ether; polyethers such as polyethylene glycol; hydrocarbons such as squalane, hexane, cyclohexane and petroleum ether; aromatic hydrocarbons such as toluene Examples thereof include halogenated hydrocarbons such as dichloromethane, chloroform and dichloroethane; and supercritical carbon dioxide. In addition, you may use these individually or as a mixed solvent which combined 2 or more types. Further, the organic solvent is preferably water-soluble.

Among the extraction solvents, one or more kinds selected from water, alcohols, ketones and supercritical carbon dioxide are preferable. Among them, one or more selected from water and alcohols are preferable, and examples thereof include water, alcohols, and a mixed liquid of water and alcohols.

Here, the alcohols may be either monohydric or polyhydric alcohols, examples of the monohydric alcohols include methanol, ethanol and propanol, and examples of the polyhydric alcohols include ethylene glycol. , Propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, glycerin, diglycerin and dipropylene glycol. Among the alcohols, for example, lower alcohols having 1 to 5 carbon atoms such as ethanol and 1,3-butylene glycol are preferable, lower monohydric alcohols are preferable, and ethanol is further preferable.

Among these, a mixed liquid of water and hydroalcohol is more preferable. Specifically, an aqueous solution containing 0 to 90% by volume of alcohols is suitable, preferably 0 to 70% by volume, more preferably 0 to 50% by volume, still more preferably 0 to 20% by volume. ..

The amount of the solvent used is not particularly limited, but is preferably 100 to 1000 L, more preferably 200 to 600 L, and extraction efficiency of the humus component with respect to 100 kg of humus (dry state), for example. Also, it is preferable in terms of work efficiency.

The extraction period is not particularly limited, but is preferably 1 day to 3 years, more preferably 10 to 180 days. The mixing and stirring of the humus soil and the extraction solvent at this time is not particularly limited, but may be performed for about 0.5 to 48 hours, for example. As a result, the humus soil and the extraction solvent come into contact with each other, and the active ingredient is easily extracted. Further, the mixing and stirring may be performed continuously or discontinuously.
For example, from the viewpoint of extraction efficiency, it is preferable that after mixing and stirring, further mixing and stirring for a certain period of time, mixing and stirring for a certain period of time, and then allowing to stand or aging for standing. It is preferable that the humus soil is allowed to settle by leaving it after mixing and stirring, which is advantageous for separation. For example, within the extraction period (for example, 1 day to 3 years), the mixture is stirred continuously or discontinuously; after 1 to 24 hours of mixing and stirring, the mixture is left to stand for 1 to 60 days (preferably 20 to 40 days); 1 After mixing and stirring for -24 hours, subsequently mixing and stirring for 1 to 20 days (preferably 3 to 9 days), and then leaving to stand for 1 day to 3 years (preferably 6 months to 2 years).

The extraction temperature is not particularly limited and is preferably low temperature to high temperature (for example, about 0 to 100°C), more preferably low temperature (for example, about 0 to 9°C) to normal temperature (for example, about 10 to 40°C). It is preferable that the humus is not thermally denatured.

Examples of the drying of the humus soil prior to extraction include sun drying, natural drying, wind drying, heat drying, freeze drying, and the like, and it is preferable that the humus soil is not thermally denatured. At this time, it is desirable to dry the humus soil to such an extent that it can be finely pulverized, and pulverization is preferable because the extraction efficiency of the humus soil is improved.

The humus soil extract contains constituents (humic substances, etc.) peculiar to humus soil such as fulvic acid and humic acid, and fatty acids, organic acids, amino acids, proteins and minerals. The humus soil extract is preferably filtered using a sterilization filter, since the humus soil is not thermally denatured and insoluble substances are removed.

The humus extract has a humic substance of at least 100 mg/L or more, preferably 100 to 1000 mg/L, more preferably 200 to 700 mg/L, in terms of solid content concentration of 0.5 mass% aqueous solution. It is preferably contained in an amount of 350 to 650 mg/L. Here, the humic substance (humic substance) refers to, for example, a polymer substance produced by decomposing and condensing plant components in soil. Here, the humic substance is a value when measured by the method described in the humus measurement method of the mineral spring test method (sanitary test method, commentary 2002, Japan Pharmaceutical Association). The details of the test method are as follows.

Accurately take a sample VmL (containing about 20 mg or more as humus), suction-filter using a 0.45 μm pore size membrane filter (dry with a desiccator (silica gel) in advance and weigh it), and wash with a small amount of water. After that, the filtrate and the washing solution are combined, 10 mL of HCl is added, and the mixture is stirred well, and left to stand overnight. This is filtered with a membrane filter. At the time of filtration, the supernatant is first suction-filtered gently, and finally the precipitation part is added. After filtering, wash the precipitate thoroughly with water. The filtrate is usually somewhat colored. Coloring is remarkable when the amount of fulvic acid is large. After filtration, remove the filter part, wrap in paraffin paper, and dry in a desiccator (silica gel) until a constant weight is reached (leave overnight). Subtract the weight of the membrane filter to determine the amount of humus and calculate the content in the sample. Since humus contains ash, transfer the membrane filter to a crucible, add a small amount of methyl alcohol to burn, then ash to obtain ash, and subtract from the weight.

Humic substance (humus) (mg/L)=((A−B)−C)/D×100

A: Weight of filter part (mg)
B: Weight of membrane filter (mg)
C: Weight of ash (mg)
D: Sampling amount (ml)

Here, fulvic acid refers to an amorphous polymeric organic acid that does not precipitate by acid, among humic substances that are the final products of plants that are decomposed by microorganisms, and is a chelate that adsorbs and releases heavy metals and the like. It has an action. Humic acid is one of humic substances that is alkali-soluble and precipitates in an acidic region. Although the detailed chemical structure is unknown, it is a condensate of a polyhydric phenol type aromatic compound and a nitrogen-containing compound, and is said to have a phenolic hydroxyl group and a carboxyl group.

In the humus soil extract, fulvic acid is preferably 1 to 20 mg/L, more preferably 5 to 15 mg/L, and further preferably 5 to 13 mg/L when converted to an aqueous solution having a solid content of 0.5% by mass. L, and more preferably 8 to 13 mg/L. Similarly, in the humus extract, humic acid is preferably 0.1 to 15 mg/L, more preferably 1 to 10 mg/L, and even more preferably, when converted into a 0.5% by mass solid content aqueous solution. 2 to 8 mg/L, and more preferably 5 to 8 mg/L.

The mixing ratio of fulvic acid:humic acid at this time is not particularly limited, but is preferably 1:10 to 10:1, and more preferably 1:8 to 8:1. The method for quantifying humic acid and fulvic acid is described in "Soil Science and Plant Nutrition, 38, 23-30 (Kuwatsuka S et al. 1992); Soil Science and Plant Nutrition, 40, 601-608 (Watanabe A. et al. 1994); Humic Substances Research, Vol. 1, pp. 18-28 (Watanabe A. et al. 2004)" and the like. When the quantitative value differs depending on the measuring method, it is preferable to adopt the measuring method having a higher quantitative value of fulvic acid.

The content of the humus soil extract is not particularly limited, but from the viewpoint of occurrence of precipitation and suppression of stickiness, 0.0001 to 1 mass% as solid content concentration in the total amount of the cosmetic (hereinafter, mass% is simply referred to as " %)), preferably 0.0001 to 0.1% in terms of effectiveness.

The component (b) α-hydroxy acid or a salt thereof used in the present invention is a carboxylic acid having a hydroxy group at the α-position or a salt thereof. Since it has a chelating effect in addition to the effect of adjusting the pH, it is possible to suppress the precipitation of humic substances contained in the humus extract.
The α-hydroxy acid or its salt of the component (b) used in the present invention is not particularly limited, and an α-hydroxy acid or its salt used in ordinary cosmetics can be arbitrarily used. For example, α-hydroxy-isobutyric acid, α-hydroxyisocaproic acid, α-hydroxy-n-caproic acid, α-hydroxy-isocaprylic acid, α-hydroxy-n-caprylic acid, α-hydroxy-n-capric acid, Examples thereof include α-hydroxystearic acid, malic acid, citric acid, tartaric acid, glycolic acid, lactic acid, and the like, more preferably malic acid, citric acid, tartaric acid, glycolic acid, and lactic acid, and salts thereof may be used. These may be used alone or in combination of two or more. Among these, in particular, α-hydroxy acids having two or more carboxyl groups in the molecule or salts thereof (malic acid, citric acid, etc.) are more preferable from the viewpoint of the effect of suppressing precipitation.

The component (b) may be in the form of a salt or may be neutralized with an alkali in advance, and further, in the production process, the form of the salt neutralized by adding an alkali. It is also possible to

The salt is not particularly limited, and examples thereof include salts of monovalent metals such as sodium and potassium, salts of polyvalent metals such as calcium, magnesium, aluminum and zinc, or ammonia, monoethanolamine, diethanolamine and triethanolamine. And organic salts such as basic amino acids such as arginine and lysine. Of these, one kind may be used, or two or more kinds selected from the above group may be mixed and used. From the viewpoint of stabilization, sodium salt or potassium salt is particularly preferable.

The content of the α-hydroxy acid or the salt thereof as the component (b) used in the present invention is not particularly limited, but from the viewpoint of the effect of suppressing precipitation and the feeling of use, 0.01 to 1% in the total amount of the cosmetic. Is preferable, and 0.1 to 0.5% is more preferable.

The chelating agent derived from the aminocarboxylic acid of the component (c) used in the present invention is a compound having a substituted amino group and a carboxylic acid group, and in the present invention, the humic substance contained in the humus extract is used. Precipitation can be suppressed. A chelating agent derived from an aminocarboxylic acid is preferable because the chelating agent derived from a phosphonic acid promotes the occurrence of precipitation by interacting with a low-solubility polymer substance contained in humic substances.

The chelating agent derived from the aminocarboxylic acid of the component (c) used in the present invention has a chelating effect characterized by having an aminocarboxylic acid skeleton, and is not particularly limited, but is used for ordinary cosmetics. A chelating agent derived from an aminocarboxylic acid can be optionally used. For example, ethylenediamine tetraacetic acid, 1,3-propanediamine tetraacetic acid, trans-1,2-diaminocyclohexane-N,N,N',N'-4 acetic acid, diethylenetriamine pentaacetic acid, glycol ether diamine tetraacetic acid, triethylenetetramine. 6-acetic acid, glutamic acid diacetic acid, hydroxyethylimino diacetic acid, hydroxyethylethylenediamine triacetic acid, ethylenediamine-N',N-disuccinic acid and the like may be mentioned, and they may be used alone or in combination of two or more. May be. Among these, especially, ethylenediamine tetraacetic acid, 1,3-propanediamine tetraacetic acid, trans-1,2-diaminocyclohexane-N,N,N',N'-4 acetic acid, glycol ether diamine tetraacetic acid, glutamic acid diacetic acid, Hydroxyethyliminodiacetic acid is preferred. Furthermore, ethylenediaminetetraacetic acid, 1,3-propanediaminetetraacetic acid and trans-1,2-diaminocyclohexane-N,N,N',N'-4acetic acid are preferable.

The content of the chelating agent derived from the aminocarboxylic acid of the component (c) used in the present invention is not particularly limited, but from the viewpoint of the effect of suppressing precipitation and the feeling of use, 0.01 to 0. 5% is preferable, and 0.05 to 0.25% is more preferable.

The component (d) isostearic acid polyoxyethylene hydrogenated castor oil or polyoxyethylene polyoxypropylene fatty acid ether used in the present invention is a nonionic surfactant, and is a humic substance contained in the humus extract. It can aid dispersion and suppress precipitation. Also, stickiness becomes stronger as the humic substances associate with each other even if they do not reach the level up to precipitation.Thus, the stickiness is reduced by improving the dispersibility of humin and preventing precipitation. It is possible to improve the usability.

The polyoxyethylene (POE) in isostearic acid polyoxyethylene hydrogenated castor oil is preferably in the range of 10 to 100, more preferably in the range of 15 to 60. The polyoxyethylene (POE) in the polyoxyethylene polyoxypropylene fatty acid ether is preferably in the range of 1-60, more preferably in the range of 3-40. The polyoxypropylene (POP) is preferably in the range of 1-40, more preferably 3-20. The content ratio of these POE and POP is preferably 1:40 to 20:1. Further, the fatty acid as the component preferably has 8 to 30 carbon atoms, and more preferably 10 to 24 carbon atoms. The fatty acid may be saturated or unsaturated, and may be linear or branched. Although not particularly limited, as the type of fatty acid used in the polyoxyethylene polyoxypropylene fatty acid ether, a branched fatty acid weakens the association of humic substances and is therefore more preferable from the viewpoint of the effect of suppressing precipitation.

More specifically, polyoxyethylene hydrogenated castor oil isostearate, polyoxyethylene hydrogenated castor oil triisostearate, polyoxyethylene polyoxypropylene fatty acid ether=polyoxyethylene polyoxypropylene decyl ether, polyoxyethylene polyoxy Propylene cetyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether, polyoxyethylene polyoxypropylene isodecyl ether, polyoxyethylene polyoxypropylene tridecyl ether, polyoxyethylene polyoxypropylene behenyl ether, polyoxyethylene polyoxypropylene Examples thereof include palmityl ether, polyoxyethylene polyoxypropylene lauryl ether, and polyoxyethylene polyoxypropylene stearyl ether. One kind may be used alone, or two or more kinds may be used in combination.
By using two or more kinds in combination, it is possible to realize a cosmetic having excellent formulation stability in which the transparency is less likely to change while the occurrence of precipitation is further suppressed. The hydrogenated castor oil used here is hydrogenated castor oil, and is also called hydrogenated castor oil.

In addition, although not particularly limited, in order to improve the dispersibility of the humic substances contained in the humus extract and suppress precipitation, it is preferable that the humic substance is hydrophilic and has high dispersibility in an aqueous system, and the HLB is 7 The above is more preferable.

Further, the component (d) used in the present invention, isostearic acid polyoxyethylene hydrogenated castor oil or polyoxyethylene polyoxypropylene fatty acid ether, is a dispersion of humic substances contained in the soil extract by containing two or more kinds. Is preferred, and the effect of suppressing precipitation can be further improved, which is preferable.

The content of the component (d) isostearic acid polyoxyethylene hydrogenated castor oil or polyoxyethylene polyoxypropylene fatty acid ether used in the present invention is not particularly limited, but from the viewpoint of the effect of suppressing precipitation and the feeling of use, cosmetic The total amount of the material is preferably 0.01 to 0.5%, more preferably 0.05 to 0.25%.

In the present invention, it helps disperse the humic substances contained in the humus extract, more effectively suppresses precipitation, and realizes a cosmetic composition having excellent formulation stability in which transparency is less likely to change. For this purpose, the content mass ratio (d)/[(b)+(c)] of the component (d) to the components (b) and (c) is preferably 0.25 to 5, It is more preferably in the range of 3 to 3. Within this range, precipitates in the preparation can be effectively suppressed, change in transparency of the preparation can be suppressed, and stabilization can be effectively performed.

The pH of the transparent to translucent cosmetic composition of the present invention at 25°C is not particularly limited, but is preferably 4 to 7 from the viewpoint of the effect of suppressing precipitation. Furthermore, pH 4.5-6.5 is preferable. The pH is adjusted by appropriately adding a pH adjusting agent so that the final pH of the cosmetic composition falls within the above range. The pH adjuster is not particularly limited, and may include the component (b) of the present invention, and examples thereof include acid substances such as lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, and dl-malic acid. , Potassium carbonate, sodium hydrogen carbonate, ammonium hydrogen carbonate, sodium hydroxide, potassium hydroxide, triethanolamine, monoethanolamine and the like, and one or more of them can be used. Further, the adjusting method is not particularly limited, and may be dissolved in an aqueous phase containing a humus extract in the step of producing a cosmetic or an aqueous phase added after adding the humus extract, or in advance. It may be directly added to the cosmetic without being dissolved in the aqueous phase. In addition, after manufacturing the cosmetic, it may be added while confirming the pH. These combinations are arbitrary, but more preferably citric acid, succinic acid, malic acid or an alkali metal salt thereof.

The component (e) polyoxyethylene alkyl ether phosphoric acid or a salt thereof used in the present invention is a surfactant having a phosphoric acid group, which assists dispersion of humic substances contained in the humus extract, and precipitates. Precipitation can be suppressed. Further, by suppressing the aggregation of the oily component dispersed in the cosmetic, it is possible to suppress the change in turbidity of the appearance over time and improve the stability of the cosmetic.
The polyoxyethylene alkyl ether phosphoric acid or salt thereof as the component (e) used in the present invention is not particularly limited, but the number of alkyl groups contained may be 1 to 3. Further, the fatty acid as the component preferably has 8 to 22 carbon atoms, and more preferably 10 to 18 carbon atoms. The fatty acid may be saturated or unsaturated, and may be linear or branched. The polyoxyethylene (POE) chain is preferably in the range of 1 to 20, more preferably in the range of 2 to 12. For example, polyoxyethylene lauryl ether phosphoric acid, polyoxyethylene myristyl ether phosphoric acid, polyoxyethylene cetyl ether phosphoric acid, polyoxyethylene stearyl ether phosphoric acid, polyoxyethylene oleyl ether phosphoric acid, polyoxyethylene behenyl ether phosphoric acid, Examples thereof include polyoxyethylene alkyl (10-15) ether phosphoric acid, polyoxyethylene dialkyl (12-15) ether phosphoric acid, polyoxyethylene tricetyl ether phosphoric acid, polyoxyethylene tristearyl ether phosphoric acid, and the like. They may be used in a dissociated state, may be used alone or in combination of two or more.

The content of the component (e) is not particularly limited, but from the viewpoint of cosmetic stability, it is preferably 0.001 to 0.5%, and 0.01 to 0.1% based on the total amount of the cosmetic. Is more preferable, and 0.02 to 0.05% is even more preferable.

TECHNICAL FIELD The present invention relates to a cosmetic containing a humus soil extract in a stable manner. Here, the cosmetic is not particularly limited, but it can be said that it is particularly effective to use it in a transparent to translucent cosmetic so that the effect can be realized when precipitation or the like occurs.
The terms transparent to translucent in the present invention can be defined as follows. That is, when the transmittance of light having a wavelength of 700 nm is measured with a spectrophotometer using a cell having an optical path length of 10 mm, the transmittance is 75% or more when the transmittance of purified water is 100%. Refers to. The spectrophotometer for measuring the transmittance is measured using "UV-2500PC UV-VIS RED CORDING SPECTROPHOTOMETER" (manufactured by SHIMADZU).

In the present invention, in addition to the above-mentioned essential components, water, alcohols, surfactants, oily components, water-soluble polymers, moisturizing agents are components that are usually contained in cosmetics, as long as the effects of the present invention are not impaired. Ingredients, ultraviolet absorbers, antioxidants, metal chelating agents, preservatives, powders, dyes, fragrances, various agents and the like can be optionally contained within a range that does not impair the effects of the present invention. Examples of such components include the following.

The water is not particularly limited as long as it is water normally used for producing cosmetics, and water derived from plants such as ordinary water, purified water, hot spring water, deep water, lavender water, rose water, and orange flower water is used. Distilled water and the like can be mentioned, and one kind or two or more kinds can be used.

Examples of the water-soluble polymer include gum arabic, tragacanth, galactan, carob gum, guar gum, cationized guar gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), starch (rice, corn, potato, wheat), arge colloid ( Plant-based polymers such as brown algae extract), microbial-based polymers such as dextran, succinoglucan and pullulan, animal-based polymers such as collagen, casein, albumin and gelatin, starch-based polymers such as carboxymethyl starch and methyl hydroxypropyl starch Polymers, methyl cellulose, nitrocellulose, ethyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, cationized hydroxyethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder and other cellulosic polymers, sodium alginate, Alginic acid-based polymers such as propylene glycol alginate, polyvinyl methyl ether, carboxyvinyl polymers (CARBOPOL (trade name), etc.), vinyl polymers such as alkyl-modified carboxyvinyl polymers (PEMULEN (trade name), etc.), polyoxyethylene -Based polymers, polyoxyethylene-polyoxypropylene copolymer-based polymers, acrylic polymers such as sodium polyacrylate, polyethyl acrylate and polyacrylamide, organic water-soluble polymers such as polyethyleneimine and cationic polymers, bentonite Inorganic water-soluble polymers such as aluminum magnesium silicate, laponite, hectorite, and silicic acid anhydride can be used, and one kind or two or more kinds can be used.

Examples of the moisturizing component include sugars, amino acids and their derivatives, peptides, plant extracts, and the like, and one or more kinds can be used.

Examples of sugars include sorbitol, erythritol, maltose, maltitol, xylitol, xylose, trehalose, inositol, glucose, mannitol, pentaerythritol, fructose, sucrose and its esters, dextrin and its derivatives, honey, and brown sugar extract. ..

Examples of amino acids include glycine, alanine, valine, isoleucine, serine, threonine, aspartic acid, glutamic acid, asparagine, glutamine, lysine, hydroxylysine, arginine, cystine, cysteine, acetylcysteine, methionine, phenylalanine, tyrosine, proline, hydroxy. Examples include proline, ortinin, citrulline, theanine, creatine, creatinine and the like.

Examples of the amino acid derivative include glutathione, pyrrolidonecarboxylic acid, N-lauroyl-L-glutamic acid di(phytosteryl-2-octyldodecyl), N-lauroyl-L-glutamic acid di(cholesteryl-behenyloctyldodecyl), N-lauroyl-L. -Di(glutamic acid octyldodecyl), N-lauroyl-L-glutamic acid di(phytosteryl behenyl-2-octyldodecyl), N-lauroyl-L-glutamic acid di(2-octyldodecyl), N-acylglutamate lysine condensation Things etc. are mentioned.

Peptides may be derived from animals, fish, shellfish, or plants. Specifically, collagen and its derivatives or hydrolysates thereof, elastin and its derivatives or hydrolysates thereof, keratin and its derivatives or them. , A wheat protein and its derivatives or their hydrolysates, a soybean protein and its derivatives or their hydrolysates, and the like.

As the plant extract, for example, psyllium, laurel, konjac, peony, senburi, birch, sage, loquat, carrot, aloe, mallow, iris, grape, yokuinin, loofah, lily, saffron, senkyu, ginger, hypericum, Ononis, Examples include garlic, capsicum, chimpanzee, touki, seaweed and the like, which are appropriately extracted with water or an organic solvent.

Examples of the antioxidant include ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole and the like.

Examples of antiseptics include benzoic acid, salicylic acid, carboxylic acid, sorbic acid, paraoxybenzoic acid ester, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizer, and phenoxyethanol.

The method for producing the transparent to translucent cosmetic composition of the present invention is not particularly limited and may be prepared by a conventional method. For example, it can be prepared by adding and mixing the component (d), which has been heated, if necessary, to the one obtained by dissolving the components (a) to (c) in water.

The transparent to translucent cosmetics of the present invention can be applied to lotions, beauty essences, massages, pack cosmetics and the like. Examples of its usage include a method of using it with hands and fingers, a method of impregnating it with a non-woven fabric, and the like. Moreover, the property can be implemented as a cosmetic having various properties such as gel and liquid.

The present invention will be further described with reference to examples. These do not limit the present invention in any way.
[Production Example 1: Production 1 of humus extract]
The corroded soil collected from the ground (soil near the coast of Kyushu) was dried and then finely pulverized. 5 kg of this pulverized product and 20 liters of purified water were mixed and stirred for 2 hours, further stirred at room temperature (about 10 to 30° C.) for 7 days, and allowed to stand for 20 days. After standing still, the mixture was filtered using a membrane filter (pore size 0.45 μm) to obtain a humus soil extract aqueous solution (stock solution). At this time, pH (20° C.) was 3.0. The dry extract content (extract content concentration) was 0.4% by mass. The total amount of humic substances contained in this stock solution was 350 mg/L (when converted to an aqueous solution of 5 g of dry extract/1 L of water, 438 mg/L), and the contents of humic acid and fulvic acid were 4 mg/L and 6.7 mg/L (5 mg/L and 8.4 mg/L, respectively, when converted to an aqueous solution of 5 g of dried extract/1 L of water). In the following examples, the dried extract was used as it was.

The method for quantifying humic acid and fulvic acid is described in the above reference Soil Science and Plant Nutrition, 38, 23-30 (Kuwatsuka S et al. 1992); Soil Science and
Plant Nutrition, Vol. 40, pp. 601-608 (Watanabe A. et al. 1994); Humic Substances Reseacrh, Vol. 1, pp. 18-28 (Watanabe A. et al. 2004).

Example 1 (lotion)
Invention products 1 to 17 and comparative products 1 to 4
A lotion was prepared by the composition shown in Tables 1 to 3 and the following production method, and by the method shown below, <1> formulation stability (no precipitation), <2> formulation stability (no change in transparency). , <3> Evaluation of good usability (no stickiness) was performed. The results are also shown in Tables 1 to 3.

<1> Formulation stability (no precipitation)
Each sample was placed in a glass bottle and stored for 1 month in a thermostatic chamber that cycles at 20°C and 40°C for 12 hours. After that, the state of precipitation of the sample taken out from the constant temperature bath was visually observed and judged according to the following criteria.
[Evaluation criteria]
⊚: No precipitation was observed at all ∘: A slight dusty precipitation was observed, but only small particles with a size of 1 mm or less.
Δ: Dust-like precipitate was observed, and a large size of 1 mm or more was also generated.
X: Dust-like precipitation of 3 mm or more is recognized.

<2> Formulation stability (no change in transparency)
Each sample was placed in a glass bottle and stored in a constant temperature bath at 50°C, and the transmittance of the sample after 1 month and the sample stored at 5°C were measured with a spectrophotometer at a wavelength of 700 nm. The difference was judged according to the following criteria.
[Evaluation criteria]
⊚: Transmittance difference is less than 5% ◯: Transmittance difference is 5% or more and less than 10% Δ: Transmittance difference is 10% or more and less than 15% ×: Transmittance difference is 15% or more

<3> Good usability (no stickiness)
Each sample was evaluated by the 5 evaluation specialist panels according to the following criteria, and the evaluations corresponding to the average evaluation value are described.

Evaluation criteria for good usability (non-stickiness) 3 Feels less sticky 2 Feels slightly sticky 1 Feels sticky 0 Feels sticky strongly

Evaluation criteria for goodness of use (non-stickiness) ◎: 3.0 or less and greater than 2.5 ◯: 2.5 or less and greater than 2.0 Δ: 2.0 or less and greater than 1.0 ×: 1.0 or less to 0.0 or more

(Manufacturing method)
A. Components (1) to (15) are uniformly dissolved.
B. Ingredients (16) to (23) are heated to dissolve uniformly and added to A with stirring.
C. B was uniformly stirred to obtain a lotion.

As is clear from the results of Tables 1 to 3, the lotions of the products 1 to 17 of the present invention were excellent in the effect of suppressing the generation of precipitation, and the transparency and feel of use of the preparation were also good. Inventive products 1, 11 and 12 having a proper content ratio are more suitable than the present invention product 10 having a small content ratio of the component (d) with respect to the components (b) and (c) or the present invention product 13 having a large content ratio. It was a better result. Among the α-hydroxy acids or the salts thereof of the component (b), the invention products 1 and 2 having two or more carboxyl groups in the molecule are more excellent in precipitation generation than the invention product 3 having two or more carboxyl groups. A suppressive effect was obtained. Further, the present invention products 1 and 14 in which the pH is in the range of 4 to 7 are better than the present invention product 15 having a pH of 4 or less and the present invention product 16 having a pH of 7 or more. Met. Furthermore, the product 7 of the present invention to which the polyoxyethylene alkyl ether phosphoric acid or the salt thereof as the component (e) was added was more excellent in the stability of the preparation. In Example 5 containing two or more specific surfactants of the component (d), better results were obtained.
On the other hand, Comparative product 1 containing no component (b), Comparative product 2 containing an acid that is not an α-hydroxy acid, Comparative product 3 containing no aminocarboxylic acid-derived chelating agent of component (c), Component ( Comparative product 4, which used a surfactant of a different type from d), was inferior in formulation stability because precipitation occurred and transparency also changed.

Example 2 Beauty Serum A beauty essence was prepared with the following composition and production method.
(Composition) (%)
(1) Alkyl acid/alkyl methacrylate copolymer (Note 3) 0.16
(2) Xanthan gum 0.1
(3) 1,3-butylene glycol 15.0
(4) Purified water remaining (5) Glycerin 5.0
(6) Polyethylene glycol 400 1.0
(7) Citric acid 0.075
(8) Na citrate 0.15
(9) Potassium hydroxide 0.07
(10) Disodium edetate 0.02
(11) Purified water 15.0
(12) Triglyceryl 2-ethylhexanoate (Note 4) 0.1
(13) Astaxanthin (Note 5) 0.02
(14) Methyl paraoxybenzoate 0.1
(15) Dipropylene glycol 5.0
(16) Isostearic acid POE (50) hydrogenated castor oil (Note 6) 0.2
(17) 0.5% aqueous solution of humus extract of Production Example 0.1

(Note 3) CARBOPOL1382 (manufactured by LUBRIZOL)
(Note 4) MYRITOL GTEH (manufactured by BASF)
(Note 5) Astaxanthin-5c (Oryza Yuka Co., Ltd.)
(Note 6) EMALEX RWIS-150 (manufactured by Nippon Emulsion Co., Ltd.)

(Manufacturing method)
A. The components (1) to (4) are heated to 80° C. and mixed uniformly.
B. Components (5) to (11) are uniformly dissolved, added to A while stirring, and then cooled.
C. While stirring B, the components (12) to (16) which are heated and uniformly dissolved are added.
D. Ingredient (17) was added and mixed uniformly to obtain a serum.

The beauty essence of Example 2 obtained as described above had a pH of 6.5 (20° C.), and had excellent formulation stability and feeling of use.

Example 3 Sheet-like pack cosmetic A sheet-like pack cosmetic was prepared by the composition and production method shown below.
(Composition) (%)
(1) 0.5% aqueous solution of humus extract of Production Example 3.0
(2) Dipropylene glycol 5.0
(3) Ethanol 15.0
(4) Polyethylene glycol 20000 1.0
(5) Glycosyltrehalose 1.0
(6) Citric acid 0.05
(7) Disodium edetate 0.02
(8) Sodium hydroxide 0.04
(9) Purified water Remaining amount (10) Preservative Suitable amount (11) Ceramide 2 0.001
(12) Phospholipid/phytosterol mixture (Note 7) 0.02
(13) 1,3-butylene glycol 0.2
(14) Polyoxyethylene polyoxypropylene lauryl ether (Note 8) 0.1
(15) POE(8) alkyl ether phosphoric acid 0.02
(Note 7) PHYTOCOMPO-PP (Nippon Seika Co., Ltd.)
(Note 8) Nonion AP-13P (manufactured by NOF CORPORATION)

(Manufacturing method)
A. The components (2) to (10) are heated to 70° C. and uniformly dissolved.
B. Ingredients (11) to (15) are heated to 70°C to uniformly dissolve them, and added to A while stirring.
C. After cooling B with stirring, component (1) is added and mixed homogeneously.
D. A sheet was impregnated with the bulk prepared in C to obtain a sheet-shaped pack cosmetic.

The sheet-like pack cosmetic of Example 3 obtained as described above had a pH of 6 (20° C.) and good formulation stability and usability.

Claims (5)

The following components (a) to ( e );
(A) Humus soil extract (b) α-hydroxy acid or salt thereof (c) Aminocarboxylic acid-derived chelating agent (d) Isostearate polyoxyethylene hydrogenated castor oil or polyoxyethylene polyoxypropylene alkyl ether ( e ) A transparent to translucent cosmetic, comprising polyoxyethylene alkyl ether phosphoric acid or a salt thereof . The content mass ratio (d)/[(b)+(c)] of the components (b), (c), and (d) is in the range of 0.25 to 5. 1. The transparent to translucent cosmetic composition according to 1. The transparent to translucent cosmetic according to claim 1 or 2, wherein the component (b) has two or more carboxyl groups in the molecule. PH at 20 degreeC is 4-7, The transparent-translucent cosmetics in any one of the said Claims 1-3 characterized by the above-mentioned. The transparent to translucent cosmetic composition according to any one of claims 1 to 6 , wherein the cosmetic composition contains two or more kinds of the component (d).