JP2017081879A - Transparent cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent cosmetic which has good transparency, excellent in high temperature and low temperature stability, has good sustainability of moisturizing effect after application, is free of stickiness and irritation, has good familiarity to a skin, and is excellent in use feeling.SOLUTION: The present invention relates to the transparent cosmetic containing the following components (A) to (C): (A) 0.008 mass% or more and 1.1 mass% or less of oligomer ester comprising a divalent carboxylic acid, and a polyglycerol having an average polymerization degree of 2 or more and 15 or less, based on the total amount of the transparent cosmetic; (B) an ascorbic acid or a water-soluble derivative thereof; and (C) a polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less.SELECTED DRAWING: None

Description

  The present invention relates to a transparent cosmetic.

  In recent years, ascorbic acid and its derivatives have been widely used as components of cosmetics and pharmaceuticals as a component that has been confirmed to be safe, suppresses the production of melanin, and exhibits an excellent whitening effect.

  However, ascorbic acid and its derivatives may cause stickiness when dissolved in water, and may impair the refreshing feeling and fresh image on the appearance of the transparent cosmetic. In addition, ascorbic acid and its derivatives are easily oxidized, so when blended into cosmetics with a transparent or translucent appearance, such as lotions, cosmetics, etc., coloration with time (yellowing) will occur and blend stably. There were cases where it was difficult.

  Therefore, in order to suppress stickiness due to ascorbic acid and its derivatives and obtain good transparency in appearance, Patent Document 1 contains a water-soluble polyether-modified dimethylpolysiloxane together 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 been obtained from dicarboxylic acid and polyglycerin as an oil agent that has a high moisturizing effect due to moisture retention, can be easily blended into cosmetics and external skin preparations using water as a medium, and has no problem in touch and safety. Oligomer esters have been developed, and lotions using the oligomer esters have been developed (see Patent Documents 2 and 3).

JP 2000-290128 A JP 2010-059117 A JP 2007-137847

  However, as described in Patent Document 1, even if an attempt is made to suppress the sticky feeling derived from ascorbic acid and its derivatives by blending a water-soluble polyether-modified dimethylpolysiloxane, it tends to cause white turbidity and discoloration over time, leaving room for improvement. there were. In addition, when a large amount of surfactant is blended and solubilized to improve transparency over time, on the contrary, a sticky feeling derived from the surfactant can be strongly felt, resulting in a decrease in skin familiarity. There was a problem. Furthermore, since it contains no oil or contains only a small amount, even if a moisturizing sensation is felt immediately after application due to the aqueous component in the transparent cosmetic, the transpiration of the aqueous component from the application part over time. There was also a problem that the moisturizing feeling was difficult to maintain.

  Therefore, the present invention has good appearance transparency, excellent high-temperature and low-temperature stability, maintains the stratum corneum moisture content for a long time after application, has a good moisturizing effect, and has a sticky and irritating feeling. The present invention also relates to a transparent cosmetic that is familiar to the skin and excellent in usability.

  The present inventor has studied to mix an oligomer ester having solubility in water in a transparent cosmetic containing ascorbic acid or a derivative thereof. However, turbidity occurs at a high temperature, and the sustainability of the moisturizing effect is sufficient. It was found that it was not improved. Therefore, as a result of further investigations, the present inventors have further blended polyalkylene glycol, which has been found to have low temperature stability when used in combination with oligomer esters, into the aforementioned transparent cosmetic containing ascorbic acid and its derivatives and oligomer esters. As a result, it was surprisingly found that a transparent cosmetic having excellent transparency and excellent stability at high and low temperatures was obtained, and the durability of the moisturizing effect after application was significantly improved. Further, the present inventors have found that this transparent cosmetic has no stickiness or irritation and is well-familiar with the skin, and has 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 divalent carboxylic acid and polyglycerin having an average polymerization degree 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 derivatives
(C) polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less

  The transparent cosmetic of the present invention has high appearance transparency, high temperature and low temperature stability, excellent durability of the moisturizing effect after application, no stickiness or irritation, and good skin familiarity.

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

  The transparent cosmetic of the present invention is a cosmetic excellent in appearance transparency. In addition, the transparency in the present specification means that the cosmetic is a transparent glass bottle (glass lightweight standard bottle (No. 6K), full capacity: 61.5 mL, dimensions: body outer diameter 40.5 mm, height 74 mm, mouth inner diameter 24.7 It represents a state where 8-point characters (black characters on a white background) can be read on a piece of paper placed in close contact with the back of the glass bottle.

[Component (A): Oligomer ester composed of divalent carboxylic acid and polyglycerin having an average degree of polymerization of 2 to 15]
The component (A) used in the present invention is an oligomer ester composed of a divalent carboxylic acid and a 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 either a straight chain, a branched chain, or a cyclic structure. However, from the viewpoint of improving the ease of synthesis and the moisturizing effect, The number of carbon atoms of the acid is preferably 2 or more, more preferably 8 or more, still more preferably 12 or more, still more preferably 14 or more, preferably 26 or less, more preferably 24 or less, still more preferably 22 or less, Preferably it is 20 or less. From the same viewpoint, an aliphatic divalent carboxylic acid is preferable. Specific examples of the divalent carboxylic acid 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, and dodecanedioic acid. , Tridecanedioic acid, tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, 8-ethyloctadecanedioic acid, eicosanedioic acid, dimethyleicosanedioic acid, cyclohexanedicarboxylic acid and the like. These divalent carboxylic acids can be used alone or in combination of two or more.

  Among these divalent carboxylic acids, a straight 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 as an oil agent. More preferred are chain divalent carboxylic acids. Specifically, from the above viewpoint, one or two selected from tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, 8-ethyloctadecanedioic acid, eicosane diacid and dimethyleicosane diacid One or more species are preferred, and one or two species selected from tetradecanedioic acid and eicosanedioic acid are more preferred.

  In addition, as the polyglycerin forming the ester with the divalent carboxylic acid, polyglycerin having an average degree of polymerization of 2 to 15 calculated from the hydroxyl value is used. The average degree of polymerization of polyglycerol 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 these, those containing polyglycerin having an average degree of polymerization of 10 are preferable.

  Examples of the method for producing an oligomeric ester of a divalent carboxylic acid and polyglycerin include the method described in JP-A-2007-137847. The degree of polymerization of the oligomer ester of the present invention can be prepared by the charging ratio of divalent carboxylic acid and polyglycerol. From the viewpoint of suppressing stickiness without the viscosity of the oligomer ester being too high, the amount of the divalent carboxylic acid relative to 1 molar equivalent of polyglycerol is preferably 0.3 molar equivalents or more, more preferably 0.7 molar equivalents or more, and preferably Is 1.5 molar equivalents or less, more preferably 1.2 molar equivalents or less.

  Preferable examples of these oligomer esters include (eicosane diacid / tetradecanedioic acid) polyglyceryl-10 which is an oligomer ester composed of tetradecanedioic acid and / or eicosane diacid and polyglycerin having an average polymerization degree of 10. Is mentioned. These oligomer esters are commercially available as “Neosolue-Aqua” and “Neosolue-Aqua S” (manufactured by Nippon Seika Co., Ltd.).

  The content of the component (A) in the transparent cosmetic is 0.008% by mass or more, preferably 0.02% by mass or more, more preferably 0.03% by mass or more, and more preferably 0.05% by mass or more from the viewpoint of improving the moisturizing effect. Is more preferable. Further, 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, and further 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% by mass, preferably 0.02 to 0.8% by mass, more preferably 0.03 to 0.5% by mass, and 0.05 to 0.2% by mass. Is more preferable.

[Component (B): Ascorbic acid or a water-soluble derivative thereof]
Component (B) used in the present invention is ascorbic acid or a water-soluble derivative thereof. Ascorbic acid or water-soluble derivatives thereof include L-ascorbic acid or a salt thereof, L-ascorbic acid phosphate, L-ascorbic acid sulfate, L-ascorbic acid glycoside, L-ascorbic acid alkyl ether, etc. Is mentioned.

  Bases that form salts include alkali metals or alkaline earth metals such as sodium, potassium, magnesium, calcium and barium, amines such as ammonium, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, triisopropanol Examples include alkanolamines such as amines.

  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 Noramine salt; sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt of L-ascorbic acid-2-phosphate, Triisopropanololamine salt; sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine of L-ascorbic acid-2-sulfuric acid Monoisopropanolamine salt, tri isopropane alkanolamine salt; L-ascorbic acid -2-O-glucoside; 3-O-ethyl ascorbic acid and the like.

  Of these, L-ascorbic acid-2-O-glucoside, ascorbate, 3-O-ethylascorbine are not sticky even when blended into transparent cosmetics, and provide a skin-friendly feel. One or more selected from acids are preferred, and L-ascorbic acid-2-O-glucoside is preferably 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.

  The content of the component (B) in the transparent cosmetic is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 0.8% by mass or more, and more preferably 1.5% by mass or more from the viewpoint of obtaining a whitening effect. Is more preferable. Moreover, from the viewpoint of obtaining a non-sticky and comfortable skin feel, it is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 2.5% by mass or less, and further preferably 2.2% by mass or less. 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, still more 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 to 200,000]
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 is not particularly limited as long as it has a number average molecular weight of 600 or more and 200,000 or less and is usually used in cosmetics. From the viewpoint of improving the skin familiarity and 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, Preferably it is 100,000 or less, More preferably, it is 50,000 or less, More preferably, it is 30,000 or less, More preferably, it is 10,000 or less, More preferably, it is 5,000 or less, More preferably, it is 2,000 or less.

  The number of carbon atoms of the alkylene group in the polyalkylene glycol of component (C) is preferably 2 to 6 and more preferably 2 to 4 from the same viewpoint. Specific examples of the alkylene group include an ethylene group and a propylene group. Are preferable, and an ethylene group is more preferable.

(Number average molecular weight of polyalkylene glycol)
The number average molecular weight of the 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 is 0.5 g / 100 mL. Next, the solution is filtered using a fluororesin filter “DISMIC-25JP” (manufactured by Advantech Co., Ltd.) having a mesh of 0.45 μm to remove insoluble components to obtain a sample solution.

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

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

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

  The 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, moisture retention, non-stickiness, and skin familiarity. Is more preferably 1.4 or more, further preferably 2 or more, and further preferably 3 or more. Moreover, 60 or less is preferable, 40 or less is more preferable, 20 or less is more preferable, 15 or less is further more preferable, and 12 or less is still more preferable. The specific range of the content mass ratio [(C) / (A)] is preferably 0.45 to 60, more preferably 0.7 to 40, still more preferably 1.4 to 20, still more preferably 2 to 15, and 3 to 12 Further preferred.

[Component (D): Polyhydric alcohol]
The transparent cosmetic of the present invention preferably further contains a polyhydric alcohol as component (D) from the viewpoint of improving moisture retention and improving skin familiarity. Examples of the polyhydric alcohol include divalent to tetravalent polyhydric alcohols, monosaccharides, disaccharides, and sugar sugars thereof. Among these, monosaccharides, disaccharides, and the like from the viewpoint of improving skin familiarity and moisture retention. One or more selected from saccharides and these sugar alcohols (hereinafter sometimes collectively referred to as saccharides) are preferred.

  Specific examples of monosaccharides include tetroses such as D-erythrulose, D-erythrose, and D-threose; aldos 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-hamamelose. Specific examples of disaccharides include xylobiose, agarobiose, carabiose, maltose, isomaltose, sophorose, cellobiose, trehalose, neotrehalose, isotrehalose, inulobiose, vicyanose, isoprimebellose, sambibiose, primebellose, melabiose, melibiose, Examples thereof include lycobiose, epicellobiose, sucrose, turanose, maltulose, lactulose, epigentibose, robinobiose, silanobiose, and rutinose. Examples of the sugar alcohol include erythritol, D-arabitol, xylitol, D-ribitol, galactitol, D-glucitol, D-mannitol, maltitol, sorbitol and the like.

  Of these, from the viewpoint of improving skin familiarity and improving moisture retention, one or more selected from maltose, maltitol, D-mannitol, sorbitol, trehalose and xylitol are preferable, and maltose, maltitol, D -One or more selected from mannitol and sorbitol are more preferable, and one or two selected from maltitol and sorbitol are more preferable. Moreover, it is more preferable that maltitol and sorbitol are included as sugars.

  Furthermore, it is preferable to contain a 2-4 valent polyhydric alcohol (except the said saccharide) with saccharides from a viewpoint of the sustainability of a moisturizing effect, a sticky feeling, and the suppression effect of a squeaky feeling.

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

  Of these, one or more selected from 1,3-butylene glycol, propylene glycol, dipropylene glycol, glycerin and diglycerin from the viewpoint of improving the moisturizing effect, good skin familiarity, and squeakiness 1 or 2 or more selected from 1,3-butylene glycol, dipropylene glycol and glycerin is more preferable, 1 or 2 selected from 1,3-butylene glycol, dipropylene glycol and glycerin The above is more preferable. Further, it is more preferable to include three kinds of 1,3-butylene glycol, dipropylene glycol and glycerin as the divalent to tetravalent polyhydric alcohol.

  These polyhydric alcohols of component (D) can be used alone or in combination of two or more. The content of the component (D) in the transparent cosmetic is preferably 5% by mass or more, more preferably 8% by mass or more, and further preferably 12% by mass or more, from the viewpoint of suppressing irritation and stickiness. Preferably it is 30 mass% or less, More preferably, it is 25 mass% or less, More preferably, it is 20 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 appearance transparency, moisture retention, and suppressing stickiness. Moreover, 10 mass% or less is preferable, 8 mass% or less is more preferable, and 5 mass% or less is still more preferable.

  The content ratio of the saccharide and the divalent to tetravalent polyhydric alcohol (excluding saccharide) in the component (D) improves the moisturizing effect and the skin familiarity, and suppresses the squeaky feeling and stickiness. 2 to 1: 6 is preferable, 1: 2.5 to 1: 5 is more preferable, and 1: 3 to 1: 4 is still more preferable.

[Component (E): Monohydric alcohol having 1 to 3 carbon atoms]
The transparent cosmetic 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 at the time of 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, component (E) is preferably a saturated monohydric alcohol having 1 to 3 carbon atoms, more preferably ethyl alcohol. Any of these may be used alone or in combinations of two or more.

  The content of the component (E) in the transparent cosmetic 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 the non-stickiness 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, and still more preferably 8% by mass or less. The specific range of the content of the component (E) in the transparent cosmetic is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass, and still more preferably 1 to 8% by mass.

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

  Bases for forming hyaluronic acid, chondroitin sulfate, alginic acid salts include alkali metals or alkaline earth metals such as sodium, potassium, magnesium, calcium, barium; ammonia; monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine And alkanolamines such as triisopropanolanolamine, and from the viewpoint of suppressing skin irritation and stickiness, one or two selected from sodium and potassium are preferred.

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

  The content of the component (F) in the transparent cosmetic is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, and further more 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, and 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 still more preferably 0.01 to 0.3% by mass.

[Ingredient (G): Water]
The transparent cosmetic composition of the present invention preferably further contains water as component (G). The content of the component (G) in the transparent cosmetic is preferably 60% by mass or more, more preferably 65% by mass or more, and 70% by mass from the viewpoint of improving low 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 more 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 still more preferably 70 to 80% by mass.

[Other ingredients]
In the transparent cosmetic of the present invention, an oily component other than the component (A), a surfactant, a fluorine compound, a resin, and a thickener other than the component (F) as long as the effects of the present invention are not impaired. , Antibacterial agents, antiseptics, perfumes, moisturizers other than component (C) and component (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 oily component other than the component (A) is blended in the transparent cosmetic of the present invention, the total content of the oily component including the component (A) in the transparent cosmetic is preferably 5% by mass or less. Preferably it is 3 mass% or less, More preferably, it is 1 mass% or less, More preferably, it is 0.8 mass% or less, More preferably, it is 0.5 mass% or less. If it is the said range, it is excellent in high temperature and low temperature stability, there is no stickiness by an oil-based component, and a refreshing feeling of use is obtained.

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

[Usage]
The transparent cosmetic composition of the present invention can be used as a cosmetic composition without any particular limitation. However, since it has a high appearance transparency and a good feel when applied to the skin, it is used as a skin cosmetic composition (including a scalp cosmetic composition). It can be used as a cosmetic for application to any skin including scalp, preferably skin excluding the scalp, more preferably face, body, limbs and the like. Examples of the dosage form include lotions, aqueous essences, packs, aqueous gels, and the like, and can also be used as sheet agents, spray agents, and mousse agents.

[Production method]
The transparent cosmetic of the present invention can be produced 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 includes a step of mixing the components (A) to (G) together. Also good.

  In the method for producing a transparent cosmetic of the present invention, the component (A) and a part of the component (G) are preferably 50 ° C. or higher, more preferably 55 ° C. or higher, and preferably 90 ° C. or lower, more preferably. Is a step 1 of heating and stirring at 85 ° C. or less and an aqueous phase containing the remainder of component (B), component (C), component (D), component (E), component (F) and component (G). The step 2 of stirring, the preparation of the step 1 and the preparation of the step 2 may be mixed and the step 3 of stirring may be included.

  The component (G) used in the step 1 may be an amount that can dissolve the component (A) at the time of heating, and is preferably 5 to 30 times the amount 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), component (E ), An aqueous phase containing the remainder of component (F) and component (G).

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

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

[Stability evaluation]
Each sample was sealed by putting 50 mL into a glass bottle (glass lightweight standard bottle (No. 6K)) and stored at 45 ° C. or 0 ° C. for 1 month in a thermostatic bath. Visual appearance of samples immediately after sealing (immediately after manufacture), samples after storage for 1 month at 45 ° C in a thermostatic chamber (after storage at high temperature), and samples after storage for 1 month at 0 ° C (after storage at low temperature) Confirmation and odor confirmation were performed, and evaluation was performed according to the following stability evaluation criteria. In addition, when the deposit which those samples have isolate | separated or those deposits are seen, stability evaluation was not performed but it described as "-".

(Stability evaluation criteria)
A: 8-point characters (black characters on a white background) written on a piece of paper placed in close contact with the back of 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 in close contact with the back of the glass bottle can be read (translucent)
C: 8-point characters written on a piece of paper placed in close contact with the back of the glass bottle cannot be read (white turbidity)
▼: Discoloration or nasty smell is seen in the sample (added after evaluation of A, B, C)

[Moisture retention evaluation (moisture layer moisture content)]
Apply a certain amount (1μL / 1cm ² ) of each sample used in the examples and comparative examples to the upper arm of 10 evaluation panelists, and apply keratin moisture before application, 1 hour after application, and 7 hours after application. Was measured using Skicon-200 (manufactured by IBS) 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 application increased compared with before application.

(Moisturizing evaluation criteria)
A: Number of people whose numerical value after application increased compared to before application is 8 or more B: Number of persons whose numerical value after application increased compared to before application is 6 or 7 C: Compared with before application The number of people who increased after application was 4 or 5 D: The number of people who increased after application compared to before application was less than 4

[Usage evaluation]
Each panel was evaluated by 10 adult female panelists who evaluated each sample according to the following criteria for non-stickiness, good skin familiarity, long-lasting moisturizing effect, and presence of irritation. Indicated.

(Evaluation criteria)
・ No stickiness 5 points: No stickiness 4 points: Feels slightly sticky 3 points: Feels slightly sticky 2 points: Feels sticky 1 point: Feels very strong stickiness

・ Skin familiarity 5 points: Skin familiarity is very good 4 points: Skin familiarity is good 3 points: Skin familiarity is slightly good 2 points: Skin familiarity is bad 1 point: Skin familiarity is very bad

・ Sustained moisturizing effect 5 points: Extremely high moisturizing effect 4 points: High moisturizing effect 3 points: Slightly moisturizing effect 2 points: Low moisturizing effect 1 Point: Very low moisturizing effect

・ Stimulus presence 5 points: No irritation (itch, tingling, tingling) 4 points: Slight irritation 3 points: Slight irritation 2 points: Weak irritation 1 point: Strong irritation

Examples 1-14, Comparative Examples 1-8
Cosmetics were prepared with the compositions described in Tables 1 and 2, and the above tests were performed. In addition, content in Table 1 and 2 is real content (pure part display) of the component as described in a table | surface.

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

* 1: NeoSolue-Aqua, manufactured by Nippon Seika Co., Ltd. (40% by weight glycerin solution, the values in the table are purely displayed)
* 2: NeoSolue-MP, manufactured by Nippon Seika Co., Ltd.
* 3: AA2G, Hayashibara
* 4: VC ethyl, 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 (Alarian Esculenta extract), manufactured by Biotech Marine

From Table 1 and Table 2, the transparent cosmetics of Examples 1 to 14 containing component (A), component (B) and component (C) have good stability at high and low temperatures, and are coated. The heat-retaining effect was excellent from immediately after to 7 hours, and the feeling of use (no stickiness, good skin familiarity and no irritation) was also good.
On the other hand, in the comparative example 1 which does not mix | blend a component (A), the sustainability of a moisturizing effect was remarkably low, and also the non-stickiness and the skin familiarity were not enough. In Comparative Example 2 in which an oily component having hydrophilicity other than the component (A) was blended, the durability of the moisturizing effect was extremely low. Further, in Comparative Example 3 in which a light-feel oil was blended, it was not completely solubilized immediately after production, and all of stability, moisturizing effect and feeling of use were inferior. In Comparative Example 4 in which the component (B) was not blended, the high temperature stability was poor and the moisture retention effect was poor. In the comparative example 5 which does not mix | blend a component (C), the sustainability of the moisturizing effect was low, and the usability | use_condition (the non-stickiness and the skin familiarity) were also inferior. Further, Comparative Example 6 in which liquid polyethylene glycol was used in place of component (C) showed almost the same result. In Comparative Example 7 in which the content of the component (A) is small, the durability of the moisturizing effect is inferior and stickiness is felt strongly. 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 was not familiar.

  Hereinafter, formulation examples of the present invention will be described. Any formulation has the effects of the present invention and is excellent as a transparent cosmetic.

Formulation Example 1 (Lotion)
Component Content (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
Edetate disodium 0.02
Potassium hydroxide 0.4
Phenoxyethanol 0.2
N-methyl-L-serine 0.1
Ectoin (* 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
Fuquidan Popo Extract (* 15) 0.1
Brown algae extract (* 16) 0.1
Licorice extract (* 7) 0.1
Purified water remaining

* 1, * 3, * 6, * 7 are the same as Tables 1 and 2.
* 9: RONACARE ECTOIN, manufactured by Merck
* 10: Falco Rex Chouji EX, manufactured by Ichimaru Falcos
* 11: Tachi musk 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: Fukidan popo extract BG-J, manufactured by Maruzen Pharmaceutical Co., Ltd.
* 16: LAMINAINE MARINE BG, manufactured by Biotech Marine

Formulation Example 2 (Lotion)
Component Content (mass%)
(A) (Eicosanedioic acid / Tetradecanedioic acid) Polyglyceryl-10 (* 1) 0.1
(B) L-ascorbic acid sulfate disodium salt 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 palm oil fatty acid sorbitan (20.EO) 0.05
Citric acid 0.03
Sodium citrate 0.07
Edetate disodium 0.02
Potassium hydroxide 0.05
Phenoxyethanol 0.2
Clove extract 0.1
Brown algae extract (* 16) 0.1
Licorice extract (* 7) 0.1
Glycine 0.01
Proline 0.01
Alanine 0.01
Purified water remaining

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

Claims (5)

A transparent cosmetic comprising the following components (A) to (C).
(A) Oligomer ester composed of divalent carboxylic acid and polyglycerin having an average polymerization degree 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 derivatives
(C) polyalkylene glycol having a number average molecular weight of 600 or more and 200,000 or less   2. The transparent cosmetic according to claim 1, wherein the content ratio [(C) / (A)] of the component (C) to the component (A) is 0.45 or more and 60 or less.   The transparent cosmetic according to claim 1 or 2, further comprising (D) a polyhydric alcohol in an amount of 5% by mass to 30% by mass with respect to the total amount of the transparent cosmetic.   The transparent cosmetic according to any one of claims 1 to 3, further comprising (E) a monohydric alcohol having 1 to 3 carbon atoms.   The transparent cosmetic according to any one of claims 1 to 4, further comprising (F) a polysaccharide.