JP6693725B2 - Transparent cosmetics - Google Patents

Description

  The present invention relates to transparent cosmetics.

  In recent years, ascorbic acid and its derivatives have been confirmed to be safe, and are widely used as components of cosmetics and pharmaceuticals as components that suppress the production of melanin and exhibit an excellent whitening effect.

  However, ascorbic acid and its derivatives may become sticky when dissolved in water, impairing the refreshing feeling and the fresh image of the transparent cosmetic composition. Also, ascorbic acid and its derivatives are prone to oxidation, so when incorporated into cosmetics that have a transparent or translucent appearance, such as lotions and beauty essences, coloration (yellowing) will occur over time, and the formulation should be stable. Was sometimes difficult.

  Therefore, in order to suppress stickiness due to ascorbic acid and its derivative and obtain good transparency in appearance, in Patent Document 1, a water-soluble polyether-modified dimethylpolysiloxane is blended with a water-soluble ascorbic acid derivative, and It has been proposed to suppress the content of the oil agent to a small amount (0.1% by mass or less).

  On the other hand, in recent years, it has a high moisturizing effect by retaining water, can be easily blended in cosmetics and external skin preparations using water as a medium, and is obtained from dicarboxylic acid and polyglycerin as an oil agent with no problem in touch and safety. Oligomer ester is developed, and lotion using the oligomer ester has been developed (see Patent Documents 2 and 3).

JP 2000-290128 JP JP 2010-059117 JP Japanese Patent Laid-Open No. 2007-137847

  However, as in Patent Document 1, even if an attempt is made to suppress the sticky feeling derived from ascorbic acid and its derivative by blending a water-soluble polyether-modified dimethylpolysiloxane, white turbidity or discoloration easily occurs over time, and there is room for improvement. there were. In addition, if a large amount of a surfactant is added to solubilize it in order to improve the transparency over time, on the contrary, a sticky feeling derived from the surfactant becomes strongly felt, and the skin familiarity deteriorates. There was a problem. Furthermore, since it contains no oil agent or contains only a small amount, even if a moisturizing sensation is felt by the aqueous component in the transparent cosmetic immediately after application, the evaporation of the aqueous component from the application part over time There was also a problem that the moisturizing feeling was hard to be maintained.

  Therefore, the present invention has good transparency of the appearance, excellent stability at high temperature and low temperature, maintains the moisture content of the stratum corneum for a long time after application, has a good sustainability of moisturizing effect, and is not sticky or irritating. The present invention relates to a transparent cosmetic product which has a good skin familiarity and an excellent usability.

  The present inventor has studied the incorporation of an oligomeric ester having solubility in water in a transparent cosmetic containing ascorbic acid or a derivative thereof, but turbidity occurs at high temperatures, and the moisturizing effect is sufficiently durable. It turns out that it doesn't improve. Therefore, as a result of further study by the present inventor, polyalkylene glycol, which showed a decrease in low-temperature stability when used in combination with an oligomer ester, was further blended in a transparent cosmetic composition containing the above-mentioned ascorbic acid and its derivative and an oligomer ester. As a result, it was found that, surprisingly, a transparent cosmetic having good transparency and excellent stability at high temperature and low temperature is obtained, and the durability of the moisturizing effect after application is remarkably improved. Furthermore, they have found that this transparent cosmetic has no stickiness or irritation and has a good skin compatibility, and completed the present invention.

That is, the present invention provides a transparent cosmetic containing the following components (A) to (C).
(A) Oligomer ester composed of dicarboxylic acid and polyglycerin having an average degree of polymerization of 2 or more and 15 or less 0.008% by mass or more and 1.1% by mass or less based on the total amount of transparent cosmetics
(B) Ascorbic acid or its water-soluble derivative
(C) Polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less

  INDUSTRIAL APPLICABILITY The transparent cosmetic composition of the present invention is highly transparent in appearance, excellent in high temperature and low temperature stability, excellent in sustaining a moisturizing effect after application, has no stickiness and irritation, and has good skin compatibility.

  Hereinafter, the configuration of the present invention will be described in detail.

  The transparent cosmetic of the present invention is a cosmetic excellent in transparency in appearance. In addition, the transparency in the specification of the present application means that the cosmetic is a transparent glass bottle (glass lightweight standard bottle (No. 6K), full capacity: 61.5 mL, dimensions: outer diameter 40.5 mm, height 74 mm, inner diameter 24.7 mm). mm, outside diameter 29.5 mm), and the 8-point character (black character on a white background) on a piece of paper placed closely behind the glass bottle can be read.

[Component (A): Oligomer ester composed of dicarboxylic acid and polyglycerin having an average degree of polymerization of 2 or more and 15 or less]
The component (A) used in the present invention is an oligomer ester composed of a dicarboxylic acid and polyglycerol having an average degree of polymerization of 2 or more and 15 or less.

  The divalent carboxylic acid is not particularly limited as long as it is a divalent carboxylic acid containing any of a straight chain, a branched chain and a cyclic structure, but from the viewpoint of improving the easiness of synthesis and the moisturizing effect, the divalent carboxylic acid. The carbon number of the acid is preferably 2 or more, more preferably 8 or more, further preferably 12 or more, more preferably 14 or more, preferably 26 or less, more preferably 24 or less, further preferably 22 or less, further It is preferably 20 or less. From the same viewpoint, an aliphatic divalent carboxylic acid is preferable. Specific divalent carboxylic acids having 2 to 26 carbon atoms include, for example, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, 2,4-diethylpentanedioic acid, undecanedioic acid, dodecanedioic acid. , Tridecanedioic acid, tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, 8-ethyloctadecanedioic acid, eicosanedioic acid, dimethyleicosanedioic acid, cyclohexanedicarboxylic acid and the like. Any of these divalent carboxylic acids can be used alone, or two or more kinds can be appropriately combined and used.

  Among these divalent carboxylic acids, a linear or branched divalent carboxylic acid having 14 or more and 22 or less carbon atoms is preferable, and a straight chain having 14 or more and 20 or less carbon atoms is preferable from the viewpoint of obtaining a light feeling in use as an oil agent. More preferred are chain dicarboxylic acids. Specifically, from the above viewpoint, one or two selected from tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, 8-ethyloctadecanedioic acid, eicosanedioic acid and dimethyleicosanedioic acid. One or more kinds are preferable, and one kind or two kinds selected from tetradecanedioic acid and eicosanedioic acid is more preferable.

  As the polyglycerin forming an ester with a dicarboxylic acid, polyglycerin having an average degree of polymerization of 2 or more and 15 or less calculated from a hydroxyl value is used. The average degree of polymerization of polyglycerin is preferably 8 or more, more preferably 9 or more, and preferably 15 or less, more preferably 12 or less, from the viewpoint of good solubility with an aqueous component. Among them, those containing polyglycerin having an average degree of polymerization of 10 are preferable.

  As a method for producing an oligomeric ester of a divalent carboxylic acid and polyglycerin, the method described in JP2007-137847A can be mentioned. The degree of polymerization of the oligomer ester of the present invention can be adjusted by adjusting the charging ratio of the dicarboxylic acid and polyglycerin. From the viewpoint that the viscosity of the oligomer ester is not too high and the stickiness is suppressed, the amount of the divalent carboxylic acid relative to 1 molar equivalent of polyglycerin is preferably 0.3 molar equivalent or more, more preferably 0.7 molar equivalent or more, and preferably Is 1.5 molar equivalents or less, more preferably 1.2 molar equivalents or less.

  A preferred example of these oligomeric esters is an oligomeric ester composed of tetradecanedioic acid and / or eicosanedioic acid and polyglycerin having an average degree of polymerization of 10: (eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 Is mentioned. This oligomer ester is commercially available as "Neosolue-Aqua" and "Neosolue-Aqua S" (manufactured by Nippon Seika Co., Ltd.).

  From the viewpoint of improving the moisturizing effect, the content of the component (A) in the transparent cosmetic is 0.008 mass% or more, preferably 0.02 mass% or more, more preferably 0.03 mass% or more, 0.05 mass% or more. Is more preferable. In addition, from the viewpoint of improving high temperature and low temperature stability and good skin familiarity, it is 1.1% by mass or less, preferably 0.8% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.2% by mass or less. The specific range of the content of the component (A) in the transparent cosmetic is 0.008 to 1.1 mass%, preferably 0.02 to 0.8 mass%, more preferably 0.03 to 0.5 mass%, 0.05 to 0.2 mass%. Is more preferable.

[Component (B): Ascorbic acid or its water-soluble derivative]
The component (B) used in the present invention is ascorbic acid or its water-soluble derivative. As ascorbic acid or a water-soluble derivative thereof, L-ascorbic acid or a salt thereof, L-ascorbic acid phosphoric acid ester salt, L-ascorbic acid sulfuric acid ester salt, L-ascorbic acid glycoside, L-ascorbic acid alkyl ether, etc. Is mentioned.

  Examples of the salt-forming base include alkali metals or alkaline earth metals such as sodium, potassium, magnesium, calcium and barium, amines such as ammonium, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, triisopropanol. Alkanol amines such as amines can be mentioned.

  Specifically, L-ascorbic acid and its sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, triisopropane Noleamine salt; L-ascorbic acid-2-phosphate sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, Triisopropanol amine salt; L-ascorbic acid-2-sulfate sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine Monoisopropanolamine salt, tri isopropane alkanolamine salt; L-ascorbic acid -2-O-glucoside; 3-O-ethyl ascorbic acid and the like.

  Among these, L-ascorbic acid-2-O-glucoside, ascorbate, 3-O-ethylascorbine is not sticky even when blended into transparent cosmetics, and from the viewpoint of providing a familiar feel to the skin. One or more selected from acids are preferable, and it is preferable that L-ascorbic acid-2-O-glucoside is contained from the viewpoint of further excellent stability. Any of these ascorbic acids or water-soluble derivatives thereof can be used alone or in combination of two or more kinds.

  The content of the component (B) in the transparent cosmetic composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, further preferably 0.8% by mass or more, and 1.5% by mass or more from the viewpoint of obtaining a whitening effect. Is more preferable. In addition, from the viewpoint of obtaining no stickiness and a good feel on the skin, 5% by mass or less is preferable, 3% by mass or less is more preferable, 2.5% by mass or less is further preferable, and 2.2% by mass or less is further preferable. The specific range of the content of the component (B) in the transparent cosmetic is preferably 0.1 to 5% by mass, more preferably 0.5 to 3% by mass, further preferably 0.8 to 2.5% by mass, and 1.5 to 2.2% by mass. % Is more preferable.

[Component (C): polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less]
The component (C) used in the present invention is a polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less. The polyalkylene glycol has a number average molecular weight of 600 or more and 200,000 or less and is not particularly limited as long as it is usually used in cosmetics. From the viewpoint of improving the familiarity to the skin and the non-stickiness, the number average molecular weight of the polyalkylene glycol is 600 or more, preferably 700 or more, more preferably 800 or more, and 200,000 or less, It is preferably 100,000 or less, more preferably 50,000 or less, still more preferably 30,000 or less, still more preferably 10,000 or less, still more preferably 5,000 or less, still more preferably 2,000 or less.

  From the same viewpoint, the number of carbon atoms of the alkylene group in the polyalkylene glycol of the component (C) is preferably 2 to 6, more preferably 2 to 4, and specific alkylene groups include an ethylene group and a propylene group. Is preferred, and an ethylene group is more preferred.

(Number average molecular weight of polyalkylene glycol)
The number average molecular weight of polyalkylene glycol can be calculated by measuring the molecular weight distribution by gel permeation chromatography as shown below.

(1) Preparation of sample solution Polyalkylene glycol is dissolved in tetrahydrofuran so that the concentration becomes 0.5 g / 100 mL. Then, this solution is filtered using a fluororesin filter "DISMIC-25JP" (manufactured by Advantech) having a mesh of 0.45 µm to remove insoluble components, to obtain a sample solution.

(2) Measurement of molecular weight distribution Tetrahydrofuran is caused to flow at a flow rate of 1 mL per minute using the following apparatus, and the column is stabilized in a constant temperature bath at 40 ° C. Inject 100 μL of the sample solution into it and perform the measurement. The molecular weight of the sample is calculated based on a calibration curve prepared in advance. The calibration curve at this time, several types of monodisperse polystyrene (2.63 × 10 ³ , Tosoh Co., 2.06 × 10 ⁴ , 1.02 × 10 ⁵ , GL Sciences 2.10 × 10 ³ , 7.00 × 10 ³ , 5.04 × 10 ⁴ ) is used as a standard sample.
Measuring device: HLC-8220 GPC (manufactured by Tosoh Corporation)
Analytical column: GMH _XL + G3000H _XL (manufactured by Tosoh Corporation)

  As the component (C), a commercially available product can be used, and for example, PEG # 1000, PEG # 1500, PEG # 4000 (all manufactured by NOF Corporation) can be used. Any of these components (C) can be used alone or in combination of two or more.

  The content of the component (C) in the transparent cosmetic composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, further preferably from the viewpoint of improving moisturizing feeling and good skin familiarity, and nonstickiness. It is 0.2% by mass or more, preferably 5% by mass or less, more preferably 2.5% by mass or less, still more preferably 1.5% by mass or less. The specific range of the content of the component (C) in the transparent cosmetic is preferably 0.01 to 5% by mass, more preferably 0.1 to 2.5% by mass, and even more preferably 0.2 to 1.5% by mass.

  The content mass ratio [(C) / (A)] of the component (C) to the component (A) is preferably 0.45 or more, and 0.7 or more, from the viewpoint of improving low temperature stability, moisturizing property, non-greasiness, and skin familiarity. Is more preferable, 1.4 or more is further preferable, 2 or more is further preferable, and 3 or more is further preferable. Further, it is preferably 60 or less, more preferably 40 or less, further preferably 20 or less, further preferably 15 or less, further preferably 12 or less. As a specific range of the content mass ratio [(C) / (A)], 0.45 to 60 is preferable, 0.7 to 40 is more preferable, 1.4 to 20 is further preferable, 2 to 15 is further preferable, and 3 to 12 is More preferable.

[Component (D): polyhydric alcohol]
The transparent cosmetic of the present invention preferably further contains a polyhydric alcohol as the component (D) from the viewpoints of improving the moisturizing property and improving the familiarity with the skin. Examples of the polyhydric alcohol include polyhydric alcohols having 2 to 4 valences, monosaccharides, disaccharides and sugar alcohols thereof. Among them, monosaccharides and disaccharides are preferred from the viewpoint of improving skin familiarity and moisturizing properties. One or more types selected from saccharides and these sugar alcohols (hereinafter sometimes collectively referred to as saccharides) are preferable.

  Specific examples of monosaccharides include tetroses such as D-erythrulose, D-erythrose and D-threose; aldoses such as D-arabinose, L-arabinose, D-xylose, D-lyxose, L-lyxose and D-ribose. Pentoses; ketopentoses such as D-xylulose, L-xylulose, D-ribulose, L-ribulose; aldohexoses such as D-galactose, L-galactose, D-glucose, D-talose, D-mannose; L- Ketohexoses such as sorbose, D-tagatose, D-psicose and D-fructose; branched sugars such as D-apiose and D-hammerose. Specific examples of the disaccharide, xylobiose, agarobiose, carabiose, maltose, isomaltose, sophorose, cellobiose, trehalose, neotrehalose, isotrehalose, inulobiose, vicyanose, isoprimeverose, sambubiose, primeverose, sorabiose, melibiose, melibose. Examples thereof include lycobiose, epicellobiose, sucrose, turanose, maltulose, lactulose, epigentibiose, robinobiose, silanobiose, and rutinose. Examples of sugar alcohols include erythritol, D-arabitol, xylitol, D-ribitol, galactitol, D-glucitol, D-mannitol, maltitol, sorbitol and the like.

  Of these, one or more selected from maltose, maltitol, D-mannitol, sorbitol, trehalose and xylitol are preferable from the viewpoint of improving skin familiarity and moisturizing property, and maltose, maltitol, D -One or more selected from mannitol and sorbitol are more preferred, and one or two selected from maltitol and sorbitol are more preferred. Further, it is more preferable to contain maltitol and sorbitol as the sugar.

  Further, from the viewpoints of the durability of moisturizing effect, the effect of suppressing sticky feeling and squeaky feeling, it is preferable to contain a polyhydric alcohol having 2 to 4 valences (excluding the saccharides) together with the saccharides.

  Examples of the dihydric alcohol include 1,3-butylene glycol, propylene glycol, 1,3-propanediol, 1,2-propanediol and dipropylene glycol, and examples of the trihydric alcohol include glycerin and trimethylolpropane. Examples of the tetrahydric alcohol include diglycerin and the like.

  Of these, one or more selected from 1,3-butylene glycol, propylene glycol, dipropylene glycol, glycerin and diglycerin, from the viewpoint of improving moisturizing effect, good skin familiarity and lack of squeaky feeling. Is preferred, and one or more selected from 1,3-butylene glycol, dipropylene glycol and glycerin is more preferred, and one or two selected from 1,3-butylene glycol, dipropylene glycol and glycerin. The above is more preferable. Further, it is more preferable to contain three kinds of 1,3-butylene glycol, dipropylene glycol and glycerin as the dihydric to tetrahydric polyhydric alcohol.

  Any of these polyhydric alcohols as the component (D) can be used alone or in combination of two or more kinds. The content of the component (D) in the transparent cosmetic is preferably 5% by mass or more, more preferably 8% by mass or more, further preferably 12% by mass or more, from the viewpoint of suppressing irritation and stickiness. It is preferably 30% by mass or less, more preferably 25% by mass or less, still more preferably 20% by mass or less.

  The content of the saccharide in the component (D) is preferably 1% by mass or more, more preferably 1.5% by mass or more, further preferably 2% by mass or more, from the viewpoint of improving the appearance transparency and the moisture retention and suppressing the stickiness. Further, it is preferably 10% by mass or less, more preferably 8% by mass or less, still more preferably 5% by mass or less.

  The content mass ratio of the saccharide and the polyhydric alcohol having a valence of 2 to 4 (excluding the saccharide) in the component (D) improves the moisturizing effect, the goodness of familiarity to the skin, and from the viewpoint of suppressing squeaky feeling and stickiness, 1: 2 to 1: 6 are preferred, 1: 2.5 to 1: 5 are more preferred, and 1: 3 to 1: 4 are even more preferred.

[Component (E): monohydric alcohol having 1 to 3 carbon atoms]
The transparent cosmetic composition of the present invention preferably further contains a monohydric alcohol having 1 to 3 carbon atoms as the component (E) from the viewpoint of good skin familiarity during application and suppression of stickiness. Examples of the monohydric alcohol having 1 to 3 carbon atoms include methyl alcohol, ethyl alcohol, propyl alcohol and isopropyl alcohol. From the same viewpoint, the component (E) is preferably a saturated monohydric alcohol having 1 to 3 carbon atoms, and more preferably ethyl alcohol. Any of these may be used alone or in combination of two or more.

  The content of the component (E) in the transparent cosmetic composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and further preferably 1% by mass or more from the viewpoint of improving non-greasiness and good skin familiarity. From the viewpoint of reducing skin irritation, it is preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less. As a concrete range of content of ingredient (E) in transparent cosmetics, 0.1-15 mass% is preferred, 0.5-10 mass% is more preferred, and 1-8 mass% is still more preferred.

[Component (F): Polysaccharide]
The transparent cosmetic composition of the present invention preferably further contains a polysaccharide as a component (F). Specific examples of the polysaccharides include guar gum, locust bean gum, queens seed, carrageenan, galactan, gum arabic, tragacanth, pectin, xanthan gum, dextrin, succinoglucan, curdlan, hyaluronic acid and / or its salt, and chondroitin sulfate. And / or natural polysaccharides such as salts thereof; methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, cationized cellulose, alginic acid and / or its salts, propylene glycol alginate, soluble starch, carboxymethyl starch. And synthetic or semi-synthetic polysaccharides such as methyl starch.

  Examples of bases that form salts of hyaluronic acid, chondroitin sulfate, and alginic acid include alkali metals or alkaline earth metals such as sodium, potassium, magnesium, calcium, barium; ammonia; monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine. , And alkanolamines such as triisopropananolamine. From the viewpoint of suppressing skin irritation and stickiness, one or two kinds selected from sodium and potassium are preferable.

  Any of these polysaccharides may be used alone or in combination of two or more. Of these, one or two or more selected from hyaluronic acid or a salt thereof, carrageenan and xanthan gum are preferable from the viewpoint of non-greasiness and good skin familiarity, and at least two selected from these are contained. Is more preferable.

  The content of the component (F) in the transparent cosmetic composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, and further preferably 0.01% by mass or more from the viewpoint of improving high temperature and low temperature stability and suppressing stickiness. It is preferably 1% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less. The specific range of the content of the component (F) in the transparent cosmetic is preferably 0.001 to 1% by mass, more preferably 0.005 to 0.5% by mass, and further preferably 0.01 to 0.3% by mass.

[Component (G): Water]
The transparent cosmetic of the present invention preferably further contains water as the component (G). The content of the component (G) in the transparent cosmetic composition is preferably 60% by mass or more, more preferably 65% by mass or more, and 70% by mass from the viewpoint of improving low-temperature and high-temperature stability, moisturizing feeling, and fresh feeling. The above is more preferable, 90% by mass or less is preferable, 85% by mass or less is more preferable, and 80% by mass or less is further preferable. The specific range of the content of the component (G) in the transparent cosmetic is preferably 60 to 90% by mass, more preferably 65 to 85% by mass, and even more preferably 70 to 80% by mass.

[Other ingredients]
The transparent cosmetic of the present invention, as long as the effect of the present invention is not impaired, further oily components other than the component (A), surfactants, fluorine compounds, resins, thickeners other than the component (F) , Antibacterial agents, antiseptics, fragrances, moisturizers other than components (C) and (D), salts, solvents other than components (E) and (G), antioxidants, chelating agents, neutralizing agents, pH Components such as regulators, insect repellents, and physiologically active components other than component (B) can be used.

  When the transparent cosmetic of the present invention contains an oily component other than the component (A), the total content of the oily component containing the component (A) in the transparent cosmetic is preferably 5% by mass or less, It is preferably 3% by mass or less, more preferably 1% by mass or less, further preferably 0.8% by mass or less, further preferably 0.5% by mass or less. Within this range, stability at high temperature and low temperature is excellent, stickiness due to an oily component is eliminated, and a refreshing feeling of use is obtained.

  Here, the oily component is a total of components including the above component (A) that are easily dissolved in oil components such as fats and oils (triglycerides), ester oils, hydrocarbons, higher alcohols having 5 or more carbon atoms, silicone oils, fluorine oils and the like. is there.

[Use]
The transparent cosmetic composition of the present invention can be used as a cosmetic composition without particular limitation, but since it has a high appearance transparency and a good application feeling on the skin, it is used as a skin cosmetic composition (including a scalp cosmetic composition). It can be used as a cosmetic for applying to skin in general including scalp, preferably skin excluding scalp, and more preferably to any of face, body, limbs and the like. Examples of the dosage form include a lotion, an aqueous essence, a pack, an aqueous gel, and the like, and a sheet agent, a spray agent, and a mousse agent can also be used.

[Production method]
The transparent cosmetic of the present invention can be manufactured by a predetermined procedure depending on the form. For example, when the transparent cosmetic of the present invention contains the components (A) to (G), the production method thereof includes a step of mixing the components (A) to (G) together. Good.

  Further, the method for producing a transparent cosmetic of the present invention, part of the component (A) and component (G), preferably 50 ℃ or more, more preferably 55 ℃ or more, also preferably 90 ℃ or less, more preferably Is heated at 85 ° C or lower and stirred, and the aqueous phase containing the rest of component (B), component (C), component (D), component (E), component (F) and component (G) is added. It may include the step 2 of stirring, the step 3 of mixing the preparation of the step 1, and the preparation of the step 2 and stirring.

  The component (G) used in step 1 may be an amount capable of dissolving the component (A) during heating, and it is preferable to use 5 to 30 times the mass of the component (A).

  In step 2, from the viewpoint of enhancing the dispersibility of component (C) in the aqueous phase, component (C) is dissolved by heating at 40 to 70 ° C in advance, and component (B), component (D), and component (E) ), Component (F) and the rest of component (G).

  Furthermore, when the transparent cosmetic of the present invention contains an oily component other than the component (A), the production method thereof is: component (B), component (C), component (D), component (E), component ( Step 1 of heating the aqueous phase containing F) and the component (G) at 50 ° C. or higher, more preferably 55 ° C. or higher, preferably 90 ° C. or lower, more preferably 85 ° C. or lower, and component (A 2) and an oily component other than component (A) are heated and stirred at preferably 50 ° C. or higher, more preferably 55 ° C. or higher, preferably 90 ° C. or lower, more preferably 85 ° C. or lower, and preparation of Step 1 It may include a step 3 in which the product and the preparation of the step 2 are mixed and stirred to emulsify.

  Hereinafter, the present invention will be described in detail based on Examples and Comparative Examples. First, the test methods used in Examples and Comparative Examples will be described below.

[Stability evaluation]
50 mL of each sample was placed in a glass bottle (glass lightweight standard bottle (No. 6K)) and sealed, and stored in a thermostat at 45 ° C or 0 ° C for 1 month. Visual appearance of samples immediately after sealing (immediately after manufacturing), samples stored in a constant temperature bath at 45 ° C for 1 month (after high temperature storage), and samples stored at 0 ° C for 1 month (after low temperature storage) The confirmation and the offensive odor were confirmed and evaluated according to the following stability evaluation criteria. In addition, when the sample isolate | separated and the deposit or those deposits are seen, stability evaluation was not performed and it described with "-".

(Stability evaluation criteria)
A: The 8-point character (black character on a white background) written on a piece of paper placed closely behind the glass bottle can be clearly read (transparent).
B: 8-point characters (black characters on a white background) written on a piece of paper placed closely behind the glass bottle can be read (translucent)
C: Unable to read 8-point characters written on a piece of paper placed closely behind the glass bottle (cloudiness)
▼: Discoloration or offensive odor is seen in the sample (added after evaluation of A, B, C)

[Moisture retention evaluation (horny layer water content)]
A fixed amount (1 μL / 1 cm ² ) of each sample used in Examples and Comparative Examples was uniformly applied to the upper arm of the evaluation panel of 10 persons, and the amount of keratin water before application, 1 hour after application, and 7 hours after application. Was measured using Skicon-200 (manufactured by IBS Co., Ltd.) based on the method of Tagami et al., And evaluated according to the following moisturizing evaluation criteria by the number of persons whose numerical value after coating increased compared with that before coating.

(Moisture retention evaluation standard)
A: The number of people whose post-application value increased compared to before application was 8 or more B: The number of people whose post-application numerical value increased compared to before application was 6 or 7 C: Compared with before application The number of people whose number increased after application was 4 or 5 D: The number of people whose number after application increased compared to before application was less than 4

[Usage evaluation]
Ten adult female evaluation panelists use each sample and evaluate according to the following evaluation criteria regarding non-greasiness, good skin familiarity, persistent moisturizing effect, and presence of irritation, and the average score is calculated. Indicated.

(Evaluation criteria)
・ No stickiness 5 points: No stickiness 4 points: Slight stickiness 3 points: Some stickiness 2 points: Stickiness 1 point: Very strong stickiness

・ Good skin familiarity 5 points: Very good skin familiarity 4 points: Good familiarity with the skin 3 points: Fairly good skin familiarity 2 points: Poor familiarity with the skin 1 point: Very badly familiar with the skin

・ Persistence of moisturizing effect 5 points: Very long lasting effect of moisturizing effect 4 points: High lasting feeling of moisturizing effect 3 points: Moderately high lasting feeling of moisturizing effect 2 points: Low lasting feeling of moisturizing effect 1 Point: Moisturizing effect lasts very little

・ Existence of irritation 5 points: No irritation (itch, tingling, tingling) 4 points: Slight irritation 3 points: Some irritation 2 points: Weak irritation 1 point: Strong irritation

Examples 1-14, Comparative Examples 1-8
Cosmetics were prepared with the compositions shown in Tables 1 and 2 and the above test was carried out. The contents in Tables 1 and 2 are the actual contents (indicated as pure content) of the components shown in the tables.

[Preparation method]
1. Components 1 to 3 and a part of component 27 (20 times the mass of component 1) are stirred and mixed while heating at 60 ° C. to obtain a composition A.
2. Composition B is obtained by stirring and mixing components 8 to 10 heated and dissolved at 60 ° C., components 4 to 7, 11 to 26 and the remaining component 27 at room temperature (25 ° C.).
3. Composition A was added to composition B, and the mixture was further uniformly stirred for 10 minutes using a homogenizer (5000 rpm) to obtain a cosmetic.

* 1: NeoSolue-Aqua, manufactured by Nippon Seika Co., Ltd. (glycerin 40% by mass solution, values in the table are pure contents)
* 2: NeoSolue-MP, manufactured by Nippon Seika Co., Ltd.
* 3: AA2G, manufactured by Hayashibara
* 4: VC ethyl, manufactured by Nippon Seika Co., Ltd.
* 5: NIKKOL VC-SS, manufactured by Nikko Chemicals
* 6: FCH-120, manufactured by Kikkoman Biochemifa
* 7: Licorice extract, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 8: ALARIANE, made by Biotech Marine

From Table 1 and Table 2, the transparent cosmetics of Examples 1 to 14 containing the component (A), the component (B) and the component (C) have good stability at high and low temperatures, and Immediately after 7 hours, an excellent heat retaining effect was exhibited, and the feeling of use (non-greasyness, good skin familiarity and non-irritation) was also good.
On the other hand, in Comparative Example 1 in which the component (A) was not blended, the moisturizing effect was remarkably low in persistence, and the non-greasiness and the good skin conformability were not sufficient. In Comparative Example 2 in which an oily component having hydrophilicity other than the component (A) was blended, the moisturizing effect was extremely low in sustainability. Further, in Comparative Example 3 in which an oily agent having a light feel was blended, the solubilization was not completed immediately after the production, and the stability, the moisturizing effect, and the feeling in use were all inferior. In Comparative Example 4 in which the component (B) was not blended, the high temperature stability was poor and the moisturizing effect persistence was poor. In Comparative Example 5 in which the component (C) was not blended, the moisturizing effect was not long-lasting, and the feeling of use (non-greasy, good skin familiarity) was poor. Also, in Comparative Example 6 in which liquid polyethylene glycol was used instead of the component (C), almost the same result was obtained. In Comparative Example 7 in which the content of the component (A) was small, the moisturizing effect was inferior in persistence and the stickiness became strong. On the contrary, in Comparative Example 8 in which the content of the component (A) was large, the stability was lowered at high temperature, the stickiness was felt, and the skin familiarity was poor.

  Hereinafter, formulation examples of the present invention will be described. Both formulations have the effects of the present invention and are excellent as transparent cosmetics.

Prescription example 1 (lotion)
Ingredient content (% by mass)
(A) (Eicosanedioic acid / tetradecanedioic acid) Polyglyceryl-10 (* 1) 0.5
(B) L-ascorbic acid-2-O-glucoside (* 3) 2.0
(C) Polyethylene glycol 4000 0.5
(D) Maltitol 2.0
(D) Sorbitol 1.5
(F) Xanthan gum 0.04
(F) Sodium hyaluronate (* 6) 0.01
(E) Ethanol 5.0
(D) Glycerin 6.4
(D) Dipropylene glycol 3.0
(D) 1,3-butylene glycol 3.0
Polyoxyethylene (60) hydrogenated castor oil 0.1
Citric acid 0.01
Sodium citrate 0.09
Disodium edetate 0.02
Potassium hydroxide 0.4
Phenoxyethanol 0.2
N-methyl-L-serine 0.1
Ectoine (* 9) 0.1
Clove extract (* 10) 0.1
Time extract (* 11) 0.1
Apple extract (* 12) 0.1
Prune extract (* 13) 0.1
Carrot extract (* 14) 0.1
Coltsfoot extract (* 15) 0.1
Brown alga extract (* 16) 0.1
Licorice extract (* 7) 0.1
Purified water Remaining amount

* 1, * 3, * 6, * 7 are the same as Tables 1 and 2.
* 9: RONACARE ECTOIN, manufactured by Merck
* 10: Falco Rex Clove EX, manufactured by Ichimaru Falcos
* 11: Tachijakoso extract BG, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 12: Apple extract BG-J, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 13: Prune extract WC, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 14: Carrot extract K, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 15: Coltsfoot extract BG-J, Maruzen Pharmaceutical Co., Ltd.
* 16: LAMINAINE MARINE BG, manufactured by Biotech Marine

Prescription example 2 (lotion)
Ingredient content (% by mass)
(A) (Eicosanedioic acid / tetradecanedioic acid) Polyglyceryl-10 (* 1) 0.1
(B) L-ascorbic acid sulfate disodium 0.5
(C) Polyethylene glycol 1000 0.5
(D) Maltitol 3
(D) Sorbitol 2
(D) 1,3-butylene glycol 3
(D) Glycerin 4
(D) Dipropylene glycol 8
(F) Hydroxypropyl methylcellulose 0.1
(F) Sodium hyaluronate (* 6) 0.01
(E) Ethanol 1
Polyoxyethylene (60) hydrogenated castor oil 0.1
Polyoxyethylene coconut oil fatty acid sorbitan (20.EO) 0.05
Citric acid 0.03
Sodium citrate 0.07
Disodium edetate 0.02
Potassium hydroxide 0.05
Phenoxyethanol 0.2
Clove extract 0.1
Brown alga extract (* 16) 0.1
Licorice extract (* 7) 0.1
Glycine 0.01
Proline 0.01
Alanine 0.01
Purified water Remaining amount

* 1, * 6, * 7 are the same as Tables 1 and 2.

Claims (3)

A transparent cosmetic containing the following components (A) to (E) and (G).
(A) Oligomer ester composed of dicarboxylic acid and polyglycerin having an average degree of polymerization of 2 or more and 15 or less 0.008% by mass or more and 1.1% by mass or less based on the total amount of the transparent cosmetic
(B) Ascorbic acid or its water-soluble derivative 0.1 mass% or more and 5 mass% or less based on the total amount of the transparent cosmetics
(C) Polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less 0.01% by mass or more and 5% by mass or less based on the total amount of transparent cosmetics
(D) Polyhydric alcohol (excluding polyalkylene glycol) 12% by mass or more and 30% by mass or less based on the total amount of transparent cosmetics
(E) Monohydric alcohol having 1 to 3 carbon atoms 0.1% by mass or more and 15% by mass or less based on the total amount of the transparent cosmetic
(G) 60% by mass or more and 85 % by mass or less based on the total amount of water-transparent cosmetic   The transparent cosmetic composition according to claim 1, wherein a mass ratio [(C) / (A)] of the component (C) to the component (A) is 0.45 or more and 60 or less.   The transparent cosmetic composition according to claim 1 or 2, further comprising (F) a polysaccharide.