JP2018062485A - External composition, and cosmetics prepared therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external composition that can prevent its appearance colored with an inorganic pigment from discoloring over time, while containing a high concentration of ascorbic acids, and cosmetics prepared therewith.SOLUTION: An external composition contains the following (A)-(C), with the content of (A) being 2 wt.% or more of the whole composition: (A) at least one selected from the group consisting of ascorbic acids, ascorbic acid derivatives, and salts thereof; (B) an inorganic pigment; (C) a sorbitan fatty acid ester that is solid at normal temperature.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composition for external use and a cosmetic using the same, and in particular, discoloration of an appearance color toned with an inorganic pigment over time can be suppressed while blending a high concentration of ascorbic acid. The present invention relates to a composition for external use and a cosmetic using the composition.

  Until now, ascorbic acids are widely known as substances having a whitening effect, and various cosmetics such as lotions, emulsions, creams, foundations and the like containing ascorbic acids have been proposed. On the other hand, ascorbic acids are known to be low in stability and denatured by temperature and light. To improve this, high stabilization of ascorbic acids, stabilizers that stabilize ascorbic acids, etc. Has been studied. For example, cosmetics containing ascorbic acids containing specific stabilizers have been proposed (Patent Document 1).

  In addition, it is known that ascorbic acids have a high concentration, their cosmetic and whitening effects are also enhanced. Recently, cosmetics containing high concentrations of ascorbic acids have also been proposed (Patent Document 2).

Japanese Patent Laying-Open No. 2005-068115 JP 2010-120879 A

  However, when such a high concentration of ascorbic acid is blended into a cosmetic composition containing an inorganic pigment such as a foundation, there is a problem that the skin color coating color and the appearance color toned by the inorganic pigment change over time. It was.

  The present invention has been made in view of such circumstances, and a composition for external use that can suppress discoloration of an appearance color toned with an inorganic pigment over time while blending a high concentration of ascorbic acid, and the same The purpose is to provide cosmetics using.

In order to achieve the above object, the present invention provides an external composition containing the following (A) to (C), wherein the content of (A) is 2% by weight or more of the entire external composition. The composition is the first gist.
(A) At least one selected from the group consisting of ascorbic acid, ascorbic acid derivatives, and salts thereof.
(B) Inorganic pigment.
(C) Sorbitan fatty acid ester which is solid at normal temperature.

  Moreover, this invention makes it 2nd summary that said (A) is water-soluble, and also said (A) is L-ascorbic acid glucoside, L-ascorbic acid-2-phosphate magnesium. It is a third gist that it is at least one selected from the group consisting of a salt, 2-glyceryl ascorbic acid, 3-glyceryl ascorbic acid, and 3-O-ethylascorbic acid. And said (B) is at least 1 sort (s) of a titanium oxide and an iron oxide as a 4th summary, Content of the said (B) is 1-20 weight% of the said external composition whole. This is the fifth gist. Moreover, said (C) is at least 1 sort (s) chosen from the group which consists of sorbitan stearate, sorbitan sesquistearate, and sorbitan tristearate, The content of said (C) is made into the 6th summary. The seventh gist is that the content is 0.1 to 10% by weight of the whole composition for external use. Further, the eighth aspect is that the external composition further contains water and is a W / O type emulsion. And the cosmetics which consist of these external compositions are made into the 9th summary.

  That is, the present inventor has long studied to increase the stability of ascorbic acids in order to obtain makeup cosmetics containing high concentrations of ascorbic acids with high needs. When ascorbic acids were blended, it was impossible to solve the problem that the appearance color toned with the inorganic pigment changed over time. Therefore, as a result of repeated studies from another viewpoint and intensive studies, it was found that discoloration can be remarkably improved by blending a solid sorbitan fatty acid ester as a surfactant, and the present invention has been achieved.

  The external composition of the present invention is an external composition containing the above (A) to (C), and the content of (A) is 2% by weight or more of the entire external composition. While blending the ascorbic acid, discoloration of the appearance color toned with the inorganic pigment over time can be suppressed.

  Moreover, when the above (A) is water-soluble, the feel of the composition for external use is improved.

  Furthermore, (A) is a group consisting of L-ascorbic acid glucoside, L-ascorbic acid-2-phosphate magnesium salt, 2-glyceryl ascorbic acid, 3-glyceryl ascorbic acid, and 3-O-ethylascorbic acid When it is at least one selected from the above, it will be excellent in the temporal stability of the composition for external use.

  And when said (B) is at least 1 sort (s) of a titanium oxide and iron oxide, it comes to be excellent in the toning property of an external composition.

  Further, when the content of (B) is 1 to 20% by weight of the entire external composition, the external composition can be more effectively toned.

  Furthermore, when (C) is at least one selected from the group consisting of sorbitan stearate, sorbitan sesquistearate, and sorbitan tristearate, the temporal stability of the composition for external use becomes more excellent.

  When the content of (C) is 0.1 to 10% by weight of the entire external composition, the temporal stability of the external composition is further improved.

  Further, if the composition is for external use and further contains water, and is a W / O type emulsion, it will be excellent in skin familiarity.

Example / comparative example A photograph showing a state in which black artificial leather was applied to a sample stored at 4 ° C. for 2 weeks (4 ° C. × 2 W) and that stored at 50 ° C. for 2 weeks (50 ° C. × 2 W). is there. It is the graph which showed the result of the color difference measurement test of an Example and a comparative example.

  Next, embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments.

<External composition>
The composition for external use of this invention contains the following (A)-(C).
(A) At least one selected from the group consisting of ascorbic acid, ascorbic acid derivatives, and salts thereof (hereinafter sometimes abbreviated as “alcorbic acids”).
(B) Inorganic pigment.
(C) Sorbitan fatty acid ester that is solid at room temperature (hereinafter, sometimes abbreviated as “solid sorbitan fatty acid ester”).
Hereinafter, each said component which comprises an external composition is demonstrated in order.

  Here, the composition for external use means a composition that is directly applied to the skin, such as an external medicine, an external quasi-drug, and a cosmetic.

[Ascorbic acids (A)]
Ascorbic acid (A) used by this invention means at least 1 sort (s) chosen from the group which consists of ascorbic acid, an ascorbic acid derivative, and those salts as above-mentioned.

  Specifically, ascorbic acid includes L-ascorbic acid, and ascorbic acid derivatives include, for example, L-ascorbic acid glucoside, L-ascorbic acid-2-phosphate ester, L-ascorbic acid-3- Examples thereof include L-ascorbic acid monoesters such as phosphate ester, L-ascorbic acid-6-phosphate ester, L-ascorbic acid-2-polyphosphate ester, and L-ascorbic acid-2-sulfate ester.

  In addition, ascorbic acid salts include sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, and triisopropanolamine salt. Etc. Examples of salts of ascorbic acid derivatives include sodium salt, potassium salt, magnesium salt, calcium salt, barium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, and triisopropanolamine salt. Is mentioned.

  Among these, it is preferable to use L-ascorbic acid, L-ascorbic acid-2-phosphate magnesium salt, L-ascorbic acid-2-phosphate sodium salt, L-ascorbic acid glucoside, and particularly L-ascorbic acid. Acid glucoside, L-ascorbic acid-2-phosphate magnesium salt, and L-ascorbic acid-2-phosphate sodium salt are preferably used.

  Moreover, although ascorbic acid (A) may be an oil-soluble thing, it is preferable from the point of tactile sense that it is water-soluble. Examples of oil-soluble ascorbic acids include ascorbyl tetra-2-hexyldecanoate and ascorbyl dipalmitate. Examples of water-soluble ascorbic acids include L-ascorbic acid and L-ascorbic acid-2-phosphoric acid. Acid ester sodium salt, L-ascorbic acid glucoside, 2-glyceryl ascorbic acid, 3-glyceryl ascorbic acid, 3-O-ethylascorbic acid and the like can be mentioned.

  Furthermore, from the point of stability over time of the composition for external use, L-ascorbic acid glucoside, L-ascorbic acid-2-phosphate magnesium salt, 2-glyceryl ascorbic acid, 3-glyceryl ascorbic acid, and 3-O— It is preferably at least one selected from the group consisting of ethyl ascorbic acid.

  The amount of ascorbic acid (A) is 2% by weight or more of the entire composition for external use, and there is no particular upper limit, but it is usually about 10% by weight. Since the effects of the present invention are exhibited when the ascorbic acid (A) has a high content of 2% by weight or more, the feature of the present invention is recognized in this respect.

  Further, ascorbic acids (A) can be used alone or in combination of two or more, but when used in combination of two or more, the amount of “ascorbic acid (A) is 2% by weight or more of the total composition for external use” "" Means that the total amount of ascorbic acids (A) is 2% by weight or more of the total composition for external use.

[Inorganic pigment (B)]
As the inorganic pigment (B), known pigments used as cosmetics can be used, for example, zinc oxide, iron oxide, titanium oxide, zirconium oxide, cerium oxide, chromium oxide, zinc silicate, silicic acid. Examples include inorganic compounds such as titanium, anhydrous silicic acid, cerium silicate, and hydrous silicic acid, aluminum hydroxide, mica, bentonite, talc, kaolin, manganese violet, carbon black, bitumen, ultramarine, bengara, etc. It is particularly preferable to use iron or titanium oxide.
These may be used alone or in combination of two or more.

  The average particle diameter (median diameter) of the inorganic pigment (B) is usually preferably 0.01 to 1 μm from the viewpoint of color tone. The average particle diameter can be measured using a dynamic light scattering DLS particle diameter measuring apparatus.

  In addition, these inorganic pigments (B) are, for example, surface treated with silicone treatment, amino acid treatment, fatty acid treatment, ester treatment, phospholipid treatment, fluorine treatment, silica treatment, triethoxycaprylylsilane treatment from the viewpoint of dispersibility. It is preferable to process, and these processes may combine 2 or more types. Of these, silicone treatment, amino acid treatment, silicone / amino acid treatment, and triethoxycaprylylsilane treatment are more preferred. In addition, the inorganic pigment (B) may be combined with polyamide, polyethylene, polystyrene, nylon, or the like.

  The content of the inorganic pigment (B) is preferably 1 to 40% by weight of the whole composition for external use from the viewpoint of toning, and further 1 to 20% by weight, particularly 5 to 20% by weight. Is preferred.

  The inorganic pigment (B) can also be used as an ultraviolet scattering agent. When emphasizing the effect as an ultraviolet scattering agent as well as a pigment, it is 0.1 to 50% by weight, more preferably 0.1 to 30% by weight, particularly 0.5 to 20% by weight of the whole composition for external use. Is preferable from the viewpoint of the ultraviolet scattering effect, the feeling of use, and the preparation stability.

[Solid sorbitan fatty acid ester (C)]
As described above, the solid sorbitan fatty acid ester (C) refers to a sorbitan fatty acid ester that is solid at room temperature, and the solid at room temperature refers to a solid state in a normal state (1 atm, 25 ° C.).

Examples of the solid sorbitan fatty acid ester (C) include sorbitan stearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan palmitate, and the like. Among them, sorbitan stearate, sorbitan sesquistearate, tristearate, and the like. It is preferable to use acid sorbitan.
These may be used alone or in combination of two or more.

  The solid sorbitan fatty acid ester (C) preferably has an HLB value of 1 to 7, more preferably 2 to 5. When the HLB value is within this range, it is suitable for obtaining the stability of the emulsion system.

  Here, the HLB value can be obtained by the Griffin equation (Atlas method).

  The content of the solid sorbitan fatty acid ester (C) is preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight, based on the entire composition for external use, from the viewpoint of stability over time of the composition for external use. .

  In addition, the blending ratio (A / C) of the (A) to the solid sorbitan fatty acid ester (C) is 10/90 to 90/10, more preferably 30/70 to 80/20, by weight ratio. It is preferable from the point of compatibility of A) and (C).

  The solid sorbitan fatty acid ester (C) functions as a surfactant of the composition for external use of the present invention, and is used as a main component of the surfactant. Here, the main component means a component that greatly affects the properties of the surfactant, and the content of the component is usually 10% by weight or more of the entire surfactant, and further 20% by weight or more. In particular, it is preferably 30% by weight or more, and includes the case where the whole consists of only the main component.

[Other ingredients]
In addition to the above (A) to (C), the composition for external use of the present invention has a surfactant other than (C), an ultraviolet protective agent other than (B), a moisturizing component, a multi-component, depending on various purposes. Monohydric alcohol, anti-inflammatory agent, astringent component, vitamins, peptide or derivative thereof, amino acid or derivative thereof, antibacterial component, keratin soft component, cell activation component, anti-aging component, blood circulation promoting component, whitening component, water, etc. Other components may be included as long as the effects of the present invention are not impaired.
These may be used alone or in combination of two or more.

  As the surfactant other than the above (C), any of a nonionic surfactant, an anionic surfactant, a cationic surfactant, and an amphoteric surfactant can be used. These may be used alone or in combination of two or more.

  Nonionic surfactants include, for example, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monostearate, diglycerol sorbitan penta-2-ethylhexylate, and diglycerol sorbitan tetra-2-ethylhexylate. Sorbitan fatty acid esters; glyceryl monostearate and glyceryl fatty acid esters such as glyceryl monostearate malate; polyglyceryl monostearate, polyglyceryl monoisostearate, polyglyceryl diisostearate, polyglyceryl monolaurate, polyglyceryl monooleate, monomyristine Polyglycerol fatty acid esters such as polyglyceryl acid; propylene glycol such as propylene glycol monostearate Fatty acid esters; polyoxyethylene hydrogenated castor oil 40 (HCO-40), polyoxyethylene hydrogenated castor oil 50 (HCO-50), polyoxyethylene hydrogenated castor oil 60 (HCO-60), and polyoxyethylene hydrogenated castor oil Hydrogenated castor oil derivatives such as polyoxyethylene hydrogenated castor oil such as 80 (HCO-80); polyoxyethylene (20) sorbitan monolaurate (polysorbate 20), polyoxyethylene (20) sorbitan monostearate (polysorbate 60) ), Polyoxyethylene (20) sorbitan monooleate (polysorbate 80), and polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene (20) sorbitan isostearate; polyoxyethylene monococonut oil fatty acid glycerides Glycerin alkyl ethers; alkyl glucosides; polyoxyethylene lauryl ethers, polyoxyethylene cetyl ethers, polyoxyethylene stearyl ethers, polyoxyethylene oleyl ethers, polyoxyalkylene alkyl ethers such as polyoxyethylene behenyl ethers; and poly Examples thereof include silicone surfactants such as oxyethylene / methylpolysiloxane copolymer, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, and PEG-9 polydimethylsiloxyethyl dimethicone.

  Examples of the anionic surfactant include glycerophospholipids such as lecithin (including hydrogenated lecithin), polyoxyalkylene alkyl (or alkenyl) ether sulfate, alkyl (or alkenyl) sulfate, higher fatty acid salt, Examples include ether carboxylate, amide ether carboxylate, alkyl phosphate ester salt, N-acyl amino acid salt, polyoxyalkylene fatty acid amide ether sulfate, acylated isethionate, and acylated taurate. As the cationic surfactant, for example, an alkylene oxide may be added, and mono- or di-long alkyl quaternary ammonium salts having a linear or branched long-chain alkyl group may be mentioned. Examples of amphoteric surfactants include carbobetaine, sulfobetaine, imidazolinium betaine, and amide betaine.

  Examples of the ultraviolet protective agent include an ultraviolet absorber and an ultraviolet scattering agent. Since the inorganic pigment (B) may be used as an ultraviolet scattering agent, an ultraviolet ray other than (B) as an optional component. The protective agent mainly means an ultraviolet absorber. And as an ultraviolet protective agent other than (B), it is preferable to use an oil-soluble ultraviolet absorber.

  The oil-soluble ultraviolet absorber is an ultraviolet absorber that does not dissolve in water and is a component having an ultraviolet protection effect. As the oil-soluble ultraviolet absorber, a commercially available one can be used, or it can be produced by a known method.

Examples of the oil-soluble ultraviolet absorber include 2,4-bis-{[4- (2-ethyl-hexyloxy) -2-hydroxy] -phenyl} -6- (4-methoxyphenyl) -1,3. , 5-triazine, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, 2- [4- (diethylamino) -2-hydroxybenzoyl] hexyl benzoate Examples include, but are not limited to, ester, 2-ethylhexyl paramethoxycinnamate, 4-tert-butyl-4′-methoxy-dibenzoylmethane, octocrylene, and polysilicone-15. Of these, 2-ethylhexyl paramethoxycinnamate and polysilicone-15 are preferred.
The oil-soluble ultraviolet absorbers can be used alone or in combination of two or more.

  The content of the oil-soluble ultraviolet absorber is 0.1 to 20% by weight, more preferably 0.1 to 10% by weight, particularly 0.5 It is preferably 10 to 10% by weight.

  Examples of the moisturizing component include diglycerin trehalose; high molecular compounds such as sodium hyaluronate, heparin-like substance, sodium chondroitin sulfate, collagen, elastin, keratin, chitin, chitosan; amino acids such as glycine, aspartic acid, arginine; Natural moisturizing factors such as sodium, urea and sodium pyrrolidone carboxylate; lipids such as ceramide, cholesterol and phospholipid; plant extract extracts such as chamomile extract, hamamelis extract, tea extract and perilla extract.

  As said polyhydric alcohol, a C2-C10 thing is preferable, for example, For example, glycerol, diglycerol, triglycerol, propylene glycol, dipropylene glycol, ethylene glycol, diethylene glycol, isoprene glycol, 1,3-butylene glycol Sorbitol, xylitol, erythritol, mannitol, pentanediol, hexanediol, octanediol, decanediol, neopentyl glycol and the like.

  Among these, glycerin, diglycerin, triglycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, ethylene glycol, diethylene glycol, isoprene glycol, sorbitol, xylitol, erythritol, mannitol, pentanediol, hexanediol, octanediol Glycerin, diglycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, diethylene glycol, isoprene glycol, sorbitol, xylitol, erythritol, mannitol, pentanediol, and hexanediol are more preferable.

  Examples of the anti-inflammatory agent include glycyrrhetinic acid, glycyrrhizic acid derivatives, azulene, components derived from plants (eg, Comfrey), tocopherol acetate, allantoin, aminocaproic acid, and hydrocortisone.

  Examples of the astringent component include zinc sulfate, aluminum chloride, zinc sulfocolate and tannic acid.

  Examples of the vitamins include vitamin E such as dl-α-tocopherol, dl-α-tocopherol acetate, dl-α-tocopherol succinate, dl-α-tocopherol calcium succinate; riboflavin, flavin mononucleotide, flavin Vitamin B2 such as adenine dinucleotide, riboflavin butyrate, riboflavin tetrabutyrate, riboflavin 5'-phosphate sodium, riboflavin tetranicotinate; nicotinic acid, nicotinic acid dl-α-tocopherol, benzyl nicotinate, nicotinic acid Nicotinic acids such as methyl, nicotinic acid β-butoxyethyl, nicotinic acid 1- (4-methylphenyl) ethyl, nicotinic acid amide; methyl hesperidin, ergocalciferol, cholecalciferol Vitamins D such as phylloquinone and farnoquinone; γ-oryzanol, dibenzoylthiamine, dibenzoylthiamine hydrochloride; thiamine hydrochloride, thiamine cetyl hydrochloride, thiamine thiocyanate, thiamine lauryl hydrochloride, thiamine nitrate, Thiamine monophosphate, thiamine lysine salt, thiamine triphosphate, thiamine monophosphate phosphate, thiamine monophosphate, thiamine diphosphate, thiamine diphosphate hydrochloride, thiamine triphosphate, thiamine triphosphate monophosphate Vitamin B1 such as salt; vitamin B6 such as pyridoxine hydrochloride, pyridoxine acetate, pyridoxal hydrochloride, 5'-phosphate pyridoxal, pyridoxamine hydrochloride; cyanocobalamin, hydroxocobalamin, de Vitamin B12 such as oxyadenosylcobalamin; folic acid such as folic acid, pteroylglutamic acid; pantothenic acid, calcium pantothenate, pantothenyl alcohol (panthenol), D-panthecin, D-panthetin, coenzyme A, pantothen Examples include pantothenic acids such as ethyl ether; biotins such as biotin and biocytin; vitamin-like agents such as carnitine, ferulic acid, α-lipoic acid and orotic acid.

  Examples of the peptide or derivative thereof include keratin-degrading peptide, hydrolyzed keratin, collagen, fish-derived collagen, atelocollagen, gelatin, elastin, elastin-degrading peptide, collagen-degrading peptide, hydrolyzed collagen, hydroxypropylammonium chloride hydrolyzed collagen, Elastin degrading peptide, conchiolin degrading peptide, hydrolyzed conchiolin, silk proteolytic peptide, hydrolyzed silk, lauroyl hydrolyzed silk sodium, soy proteolytic peptide, hydrolyzed soy protein, wheat protein, wheat proteolytic peptide, hydrolyzed wheat protein, Casein degrading peptides, acylated peptides (palmitoyl oligopeptides, palmitoyl pentapeptides, palmitoyl tetrapeptides, etc.) and the like can be mentioned.

  Examples of the amino acids or derivatives thereof include betaine (trimethylglycine), proline, hydroxyproline, arginine, lysine, serine, glycine, alanine, phenylalanine, β-alanine, threonine, glutamic acid, glutamine, asparagine, aspartic acid, cysteine, Examples include cystine, methionine, leucine, isoleucine, valine, histidine, taurine, γ-aminobutyric acid, γ-amino-β-hydroxybutyric acid, carnitine, carnosine, and creatine.

  Examples of the antibacterial component include chlorhexidine, salicylic acid, benzalkonium chloride, acrinol, ethanol, benzethonium chloride, cresol, gluconic acid and derivatives thereof, popidone iodine, potassium iodide, iodine, isopropylmethylphenol, triclocarban, triclosan, photosensitive Element 101, Photosensitive element 201, Alkyldiaminoglycine hydrochloride, Pyroctoolamine, Miconazole and the like.

  Examples of the keratin soft component include lactic acid, salicylic acid, salicylic acid glycolic acid, gluconic acid, citric acid, malic acid, fruit acid, phytic acid, urea, sulfur and the like.

  Examples of the cell activation component include amino acids such as γ-aminobutyric acid and ε-aminocaproic acid; vitamins such as retinol, thiamine, riboflavin, pyridoxine hydrochloride and pantothenic acids; α-hydroxy acids such as glycolic acid and lactic acid Tannins, flavonoids, saponins, photosensitizer 301 and the like.

  Examples of the anti-aging component include pangamic acid, kinetin, ursolic acid, turmeric extract, sphingosine derivative, silicon, silicic acid, N-methyl-L-serine, mevalonolactone, and the like.

  Examples of the blood circulation promoting component include plants (for example, ginseng, ashitaba, arnica, ginkgo, fennel, entomop, Dutch oak, chamomile, roman chamomile, carrot, gentian, burdock, rice, hawthorn, shiitake, ginger, and hawthorn. , Spider, cucumber, thyme, thyme, clove, chimney, pepper, toki, tonin, spruce, carrot, garlic, butcher bloom, grape, button, maronier, melissa, yuzu, yokuinin, ryokcha, rosemary, rosehip, peach, Apricot, walnut, corn) component: acetylcholine, ictamol, cantalis tincture, gamma-oryzanol, cephalanthin, torazoline, tocopherol nicotinate, glucosi Hesperidin, and the like.

  Examples of the whitening component include tocopherol, tranexamic acid, arbutin, 4-alkylresorcinol, salts thereof, 4-methoxysalicylic acid, hydroquinone, kojic acid, placenta extract, and plant components having a whitening effect. (For example, extracts such as Abou, Yukinoshita, and Aloe).

  When the above water is further contained, the composition for external use is preferably an emulsion, which may be either a W / O type emulsion or an O / W type emulsion, and is particularly a W / O type emulsion. Is preferable because it is excellent in skin conformability.

<Method for producing composition for external use>
The method for producing the external composition of the present invention is not particularly limited, and various components (the above-mentioned other components and the like) necessary for producing an ordinary external composition are appropriately selected in addition to (A) to (C). , And can be produced by a conventional method.

<Formulation>
Examples of the preparation form of the external composition used in the present invention include pharmaceuticals, quasi-drugs, and cosmetics. In this case, the essential ingredients and the other components described above are used as pharmaceuticals, quasi-drugs. Or it can mix with a base or a carrier normally used for cosmetics, and the additive mentioned later as needed according to a conventional method, and it can be set as the composition of these formulation forms.

  Furthermore, as the base or carrier, fats and oils such as palm oil, olive oil, rice bran oil and shea butter; hydrocarbons such as petrolatum and liquid paraffin; waxes such as jojoba oil, beeswax, candelilla wax and lanolin; cetanol , Cetostearyl alcohol, stearyl alcohol, behenyl alcohol, octyldodecanol, isostearyl alcohol, phytosterol, cholesterol and other higher alcohols; dimethicone, cyclopentasiloxane, decamethylcyclopentasiloxane, methylphenylpolysiloxane and other cyclic silicones, modified silicones, etc. Silicone derivatives; cellulose derivatives such as ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose; polyvinylpyrrolidone; carrageenan; polyvinyl Polyethylene glycol; Dioxane; Butylene glycol adipic acid polyester; Diisopropyl adipate, cetyl ethylhexanoate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, cetyl palmitate, glyceryl tri-2-ethylhexanoate, triisostearin Esters such as polyglyceryl-2 acid, isononyl isononanoate, pentaerythritol tetra-2-ethylhexanoate, diisostearyl malate; polysaccharides such as dextrin, maltodextrin, dextrin palmitate; carboxyvinyl polymer, alkyl-modified carboxy Vinyl polymers such as vinyl polymers; clay minerals such as disteardimonium hectorite and stearalkonium hectorite; Diethylene glycol ethers such as monoethyl ether; Nord, lower alcohols such as isopropanol, water and the like. When the composition for external use of the present invention contains a polyhydric alcohol, the polyhydric alcohol may also serve as a base or a carrier.

  The bases or carriers described above can be used singly or in combination of two or more, and the amount used thereof is appropriately selected from a range known to those skilled in the art.

  The content of the base or carrier is usually 10 to 95% by weight, preferably 20 to 95% by weight, more preferably 50 to 95% by weight, based on the total composition for external use.

〔Additive〕
In the composition for external use of the present invention, known additives to be added to pharmaceuticals, quasi drugs or cosmetics within a range not impairing the effects of the present invention, for example, stabilizers, antioxidants, (B) Coloring agents other than the above, pearl luster imparting agents, dispersants, chelating agents, pH adjusters, preservatives, thickeners, irritation reducing agents, fragrances and the like can be added. These additives can be used alone or in combination of two or more.

  Examples of the stabilizer include sodium polyacrylate, dibutylhydroxytoluene, butylhydroxyanisole and the like.

  Examples of the antioxidant include dibutylhydroxytoluene, butylhydroxyanisole, sorbic acid, sodium sulfite, erythorbic acid, and L-cysteine hydrochloride.

  Examples of the colorant other than the above (B) include, for example, organic dyes Red 201, Red 202, Red 204, Red 205, Red 206, Red 207, Red 218, Red 226, Yellow 4 No. 5 aluminum lake, yellow No. 5 aluminum lake, yellow No. 203 aluminum lake, yellow No. 401, blue No. 1 aluminum lake, blue No. 404, orange No. 203, natural pigments and the like.

  Examples of the pearl luster imparting agent include ethylene glycol distearate, ethylene glycol monostearate, triethylene glycol distearate, and nylon powder.

  Examples of the dispersant include sodium pyrophosphate, sodium hexametaphosphate, polyvinyl alcohol, polyvinyl pyrrolidone, methyl vinyl ether / maleic anhydride crosslinked copolymer, and organic acid.

  Examples of the chelating agent include EDTA · disodium salt and citric acid.

  Examples of the pH adjuster include inorganic acids (hydrochloric acid, sulfuric acid, sodium hydrogenphosphate hydrate, etc.), organic acids (lactic acid, sodium lactate, citric acid, sodium citrate, succinic acid, sodium succinate, etc.), An inorganic base (potassium hydroxide, sodium hydroxide, etc.), an organic base (triethanolamine, diisopropanolamine, triisopropanolamine, etc.) etc. are mentioned.

  Examples of the preservative include benzoic acid, sodium benzoate, dehydroacetic acid, sodium dehydroacetate, parabens such as propylparaben and methylparaben, phenoxyethanol, 1,2-pentanediol and the like.

  Examples of the thickener include cellulose-based thickeners such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, carboxyethylcellulose, guar gum, pectin, pullulan, gelatin, locust bean Gum, carrageenan, agar, xanthan gum, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, alkyl methacrylate copolymer, polyethylene glycol, alginic acid, propylene glycol alginate, macrogol, chondroitin sulfate sodium, hyaluronic acid, sodium hyaluronate, (Hydroxyethyl acrylate / acryloyl Methyl taurine Na) copolymer, and (ammonium acryloyldimethyltaurate / vinyl pyrrolidone) copolymers and the like.

  Examples of the irritation reducing agent include licorice extract, sodium alginate, gum arabic, and polyvinylpyrrolidone.

  The content of the additive is usually 0.01 to 20% by weight, preferably 0.05 to 15% by weight, more preferably 0.1 to 12% by weight, based on the total composition for external use.

  Examples of the preparation form of the external composition of the present invention include pharmaceuticals, quasi-drugs, and cosmetics as described above, and among them, the sunscreen cosmetics can be used to suppress discoloration of inorganic pigments. It is preferably used for cosmetics such as makeup cosmetics.

<Sunscreen cosmetics>
The external composition of the present invention can be used as an external composition for sunscreen. The external composition for sunscreen can be suitably used as an external preparation for protecting skin and hair from ultraviolet rays, preventing sunburn and the like. The application amount and usage of the sunscreen external composition to the skin are not particularly limited, and it can be used by applying, for example, applying an appropriate amount to the skin several times a day. Moreover, it can have a function as a makeup base.

<Makeup cosmetics>
The composition for external use of the present invention includes, for example, cosmetics for face makeup such as foundations and makeup bases; lip cosmetics such as lipsticks, lip balms, knitted red, lip gloss, lip liners; eye colors, eye liners, eye shadows Further, it can be used for point makeup cosmetics such as mascara, eyebrow, cheek color, face color, etc. Among them, it can be preferably used for cosmetics for face makeup, particularly foundations. Here, the foundation includes known ones, and is not particularly limited. For example, a powder foundation, a liquid foundation, a cream foundation, an emulsion foundation, a loose foundation, a stick foundation, a spray foundation, and the like are preferably exemplified. . From the viewpoint of suppressing the discoloration of the appearance color toned with the inorganic pigment over time, which is an effect of the present invention, the external composition of the present invention is more preferably used in a cosmetic for makeup.

  EXAMPLES Hereinafter, although an Example demonstrates this invention together with a comparative example in detail, this invention is not limited at all by these.

[Examples 1 to 3, Comparative Examples 1 to 5]
The composition for external use having the composition shown in Table 1 below is uniformly mixed at room temperature (25 ° C.), and then stirred with a homomixer and sufficiently uniformly mixed, so that the W / O type of Examples and Comparative Examples is used. A formulation consisting of an emulsion was obtained.
More specifically, the aqueous phase (L-ascorbic acid 2-glucoside, 1,3-butylene glycol, water) is first adjusted with sodium hydroxide so as to have a pH of 6.3, and the aqueous phase α Got. Next, the aqueous phase α was added to the heated and cooled oil phase as necessary, and the mixture was stirred and uniformly mixed with a homomixer.

<Test Example 1: Color difference measurement>
The prepared compositions for external use in Examples and Comparative Examples were filled in 30 mL glass vials, respectively, stored at 4 ° C. for 2 weeks (4 ° C. × 2 W) and stored at 50 ° C. for 2 weeks (50 ° C. × 2 W). FIG. 1 shows a photograph in which the same amount was applied to black artificial leather having an area and the application state was photographed. Further, the surface of the black artificial leather was measured with a color difference meter (Konica Minolta, CM-5), and the color difference (ΔE * ab) between the 4 ° C. product and the 50 ° C. product was calculated. The calculated color difference results are shown in Table 2 below, and FIG. 2 is a graph showing the color difference results. In Table 2, L * represents lightness, and a * and b * represent chromaticity indicating hue and saturation.

  In FIG. 1, the coating colors of all of Comparative Examples 1 to 4 stored at 50 ° C. for 2 weeks were dark and deteriorated, whereas none of Examples 1 to 3 was discolored. On the other hand, in Comparative Example 5, no discoloration is observed, but this is a composition for external use that does not contain ascorbic acid (A). From this, it is inorganic when it does not contain ascorbic acid (A). It can be seen that the problem of discoloration of the pigment does not occur. Therefore, it can be seen that Examples 1 to 3 were able to remarkably suppress the discoloration that normally occurs when the ascorbic acids (A) are highly contained.

From the color difference (ΔE * ab) results of the 4 ° C. product and the 50 ° C. product shown in Table 2 and FIG. 2, there is almost no color difference in Examples 1 to 3, and discoloration is suppressed, while Comparative Example 1 It can be seen that all of -4 have a color difference exceeding 10 and are greatly discolored.
In addition, although the mechanism which can suppress discoloration remarkably in this way is not exactly known, the compatibility of (A) and (C) which is an essential component of the present invention has a great influence on the color difference. It is guessed.
This discoloration is a problem that particularly impairs the characteristics of the product, especially in makeup cosmetics such as foundations and makeup bases. In Examples 1 to 3 of the present invention, this discoloration is suppressed, so that the cosmetics for makeup are used. It turns out to be very useful.

  Below, the formulation example (formulation example) of the composition for external use of this invention is shown.

  Since the composition for external use of the present invention can suppress discoloration of the appearance color toned with the inorganic pigment over time while blending high concentrations of ascorbic acids, it can be used for pharmaceuticals, quasi drugs, and cosmetics, particularly Very useful for makeup cosmetics.

Claims (9)

It is an external composition containing the following (A)-(C), Comprising: The external composition whose content of (A) is 2 weight% or more of the whole external composition.
(A) At least one selected from the group consisting of ascorbic acid, ascorbic acid derivatives, and salts thereof.
(B) Inorganic pigment.
(C) Sorbitan fatty acid ester which is solid at normal temperature.   The composition for external use according to claim 1, wherein (A) is water-soluble.   (A) is selected from the group consisting of L-ascorbic acid glucoside, L-ascorbic acid-2-phosphate magnesium salt, 2-glyceryl ascorbic acid, 3-glyceryl ascorbic acid, and 3-O-ethylascorbic acid The composition for external use according to claim 1 or 2, which is at least one selected from the above.   The said external composition as described in any one of Claims 1-3 whose said (B) is at least 1 sort (s) of a titanium oxide and an iron oxide.   The external composition as described in any one of Claims 1-4 whose content of the said (B) is 1 to 20 weight% of the said external composition whole.   The composition for external use according to any one of claims 1 to 5, wherein (C) is at least one selected from the group consisting of sorbitan stearate, sorbitan sesquistearate, and sorbitan tristearate.   The external composition according to any one of claims 1 to 6, wherein the content of (C) is 0.1 to 10% by weight of the entire external composition.   Furthermore, it is an external composition containing water, Comprising: The external composition as described in any one of Claims 1-7 which is a W / O type emulsion.   Cosmetics consisting of the composition for external use as described in any one of Claims 1-8.