JP2017105825A - Skin Care Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin care cosmetic, that is, an antipollution cosmetic, which can effectively protect the skin from various external stimuli including not only air pollutants or an acidic liquid but also ultraviolet rays.SOLUTION: There is provided a skin care cosmetic which comprises (A) 0.001 to 10 mass% of magnesium aluminometasilicate and (B) 1 to 40 mass% of octyl methoxycinnamate and/or hexyl diethylaminohydroxybenzoylbenzoate as an ultraviolet protective agent. There is provided a sunscreen cosmetic, especially an antipollution sunscreen cosmetic which further preferably comprises at least one selected from (C) a porous powder, (D) citric acid (a salt thereof) and (E) an antioxidant.SELECTED DRAWING: None

Description

  The present invention relates to a skin care cosmetic capable of preventing or suppressing damage to the skin due to external stimuli such as air pollutants and ultraviolet rays. More specifically, the present invention relates to a skin care cosmetic that not only has an ultraviolet protection ability but also can effectively adsorb air pollutants and has an excellent pH buffering ability.

The skin and hair are constantly exposed to external stimuli and are subject to various damages from the external environment. In particular, air pollutants such as microparticulate matter and acid liquids such as acid rain, which have recently attracted attention, are known to adversely affect the skin by adhering to the skin. Further, it has been elucidated that ultraviolet rays such as UVA and UVB damage skin and cause skin aging.
In order to protect the skin from these external stimuli, it is considered that substances that can cause damage do not adhere to the skin and / or the adverse effects due to the attached irritation causing substances are mitigated (antioxidation or neutralization). It is done.

  As a so-called “anti-pollution cosmetic”, which has a function for protecting the skin as described above, conventionally, a cosmetic has been proposed in which an oil-based coating agent is blended to cover the skin closely. However, although it is effective in terms of preventing irritation causing substances from adhering to the skin, it is unclear whether or not it is effective against all irritation causing substances because the skin is covered with a tight film and the feeling of use is poor. there were.

Patent Document 1 describes a composition (cosmetics) for protecting skin or hair from heavy metals contained in air pollutants, and that a chelating agent that chelates heavy metals and sphingolipid are blended. It is a feature.
Patent Document 2 describes a skin / hair protecting agent containing an extract of a plant belonging to the genus Orchidaceae, and intends to alleviate the adverse effects of stimulating substances based on the antioxidant action of the extract. .

  In this way, cosmetics intended to protect the skin by capturing irritating substances such as air pollutants and suppressing oxidative action have also been proposed, but their effects are limited. In addition, no cosmetic has been known in the past that has a function of suppressing stimulation by ultraviolet rays.

JP 2004-244423 A JP 2004-262894 A

  Therefore, an object of the present invention is to provide a skin care cosmetic that can effectively protect the skin from various external stimuli including ultraviolet rays as well as air pollutants and acidic liquids, that is, an anti-poration cosmetic.

  In order to solve the above-mentioned problems, the present inventors have conducted extensive studies, and as a result, magnesium aluminate metasilicate is not only excellent in adsorbing air pollutants but also has a pH buffering ability to neutralize acidic substances. In addition, the present inventors have found that it can be combined with various UV protection agents in a stable manner, and have completed the present invention.

  That is, the present invention provides a skin care cosmetic comprising (A) magnesium aluminate metasilicate and (B) an ultraviolet protective agent.

  Since the skin care cosmetic of the present invention is blended with magnesium aluminate metasilicate, it effectively adsorbs air pollutants by its adsorption ability and does not reach the skin. It can neutralize and reduce the skin damage caused by these external stimuli. Moreover, since the ultraviolet protective agent is mix | blended in combination with magnesium aluminate metasilicate, the damage by an ultraviolet-ray can also be suppressed simultaneously.

Below, the skin care cosmetics of this invention are demonstrated in detail.
The skin care cosmetic of the present invention contains (A) magnesium aluminate metasilicate.
The magnesium aluminate metasilicate used in the present invention is preferably an amorphous substance having no crystal form, and is generally used in the form of granules or powder. Since it is an amorphous structure, it cannot be represented accurately by a chemical structural formula, but can be represented by the following general formula (1) for convenience.
Al ₂ O ₃ .MgO.1.7SiO ₂ .xH ₂ O (1)

Granules or powders of magnesium aluminate metasilicate have a very large specific surface area (at least 100 m ² / g, generally 250 to 300 m ² / g), so that they are excellent in water absorption and oil absorption while neutralizing acidic substances. It has the feature of having ability.
In the present invention, commercially available magnesium aluminate metasilicate can also be used, and examples thereof include Neusilin (registered trademark) manufactured by Fuji Chemical Industry Co., Ltd.

  The magnesium aluminate metasilicate used in the present invention may be in the form of granules or powder, and the shape and particle size are not particularly limited, but are usually 20, 30, 40 or 50 μm or more, 2,000, 1, Spherical powders or granules having a particle size of 000 or 800 μm or less are preferred.

  The blending amount of magnesium aluminate metasilicate in the skin care cosmetic of the present invention is not particularly limited, but is usually 0.001, 0.005, 0.008 or 0.01% by mass or more, preferably 10% by mass. Hereinafter, it is more preferably 5% by mass or less, and further preferably 3% by mass or less. For example, it can mix | blend in 0.001-10 mass%, 0.05-5 mass%, or 0.01-3 mass%. If the blending amount is less than 0.001% by mass, the effect of blending magnesium aluminate silicate becomes difficult to obtain, and if the blending amount exceeds 10% by mass, good usability may be impaired.

  The skin care cosmetic of the present invention contains (B) an ultraviolet protective agent in addition to (A) magnesium aluminate metasilicate. The ultraviolet protective agent in the present invention is composed of either or both of an ultraviolet absorber and an ultraviolet scattering agent.

The ultraviolet absorber that can constitute the ultraviolet protective agent is not particularly limited, and can be selected from those usually used in cosmetics and the like.
Specific examples of the ultraviolet absorber include, for example, paraaminobenzoic acid (PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester, N, N-dimethyl PABA ethyl ester, Benzoic acid ultraviolet absorbers such as N, N-dimethyl PABA butyl ester and diethylaminohydroxybenzoyl hexyl benzoate; Anthranilic acid ultraviolet absorbers such as homomenthyl-N-acetylanthranilate; Amyl salicylate, menthyl salicylate, homomentyl salicylate , Salicylic acid UV absorbers such as octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate; octylcinnamate, ethyl-4-isopropyl Pilcinnamate, methyl-2,5-diisopropylcinnamate, ethyl-2,4-diisopropylcinnamate, methyl-2,4-diisopropylcinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, Isoamyl-p-methoxycinnamate, octyl-p-methoxycinnamate [= 2-ethylhexyl-p-methoxycinnamate], 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α -Cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-diparamethoxycinnamate, 3,4,5-trimethoxycinnamic acid 3 -Methyl-4- [methylbi Cinnamic acid UV absorbers such as bis (trimethylsiloxy) silyl] butyl; 2-phenyl-5-methylbenzoxazole, 2,2′-hydroxy-5-methylphenylbenzotriazole, 2- (2′-hydroxy) -5'-t-octylphenyl) benzotriazole, 2- (2'-hydroxy-5'-methylphenylbenzotriazole), dibenzalazine, dianisoylmethane, 4-tert-butyl-4'-methoxydibenzoylmethane, 4- (1,1-dimethylethyl) -4′-methoxydibenzoylmethane, 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one, octocrylene [= 2-cyano-3,3- Diphenyl-2-propenoic acid-2-ethylhexyl ester], polysilicon-15 [= dimethicodiethylbenzal Malonate], di- (2-ethylhexyl) -4′-methoxybenzalmalonate, and the like.

The ultraviolet scattering agent that can constitute the ultraviolet protective agent is not particularly limited, and can be selected from those usually used in cosmetics and the like.
For example, metal oxide powders such as titanium oxide and zinc oxide are preferably used.
By blending a combination of an ultraviolet absorber and an ultraviolet scattering agent, the ultraviolet protection effect can be improved over a wide wavelength region.

  The blending amount of the UV protective agent in the skin care cosmetic of the present invention (total blending amount of UV absorber and UV scattering agent) is usually 40% by mass or less, preferably 35% by mass or less, more preferably 30% by mass or less. is there. Although the minimum of the compounding quantity of a ultraviolet protective agent is not specifically limited, Usually, it is 1, 1.5 or 2 mass% or more. For example, 1-40 mass%, 1.5-35 mass%, or 2-30 mass% etc. can be mix | blended. If the blending amount is less than 1% by mass, sufficient UV protection ability may not be obtained, and if it exceeds 40% by mass, a good feeling in use may be impaired.

  The skin care cosmetic of the present invention contains (A) magnesium aluminate metasilicate so that it can effectively adsorb air pollutants and the like, and neutralizes the attached acidic liquid based on its pH buffering capacity. be able to. Since the skin care cosmetic of the present invention further contains (B) an ultraviolet protective agent, the skin can be effectively protected from ultraviolet rays. Conventionally, cosmetics having such functions have not been known.

The skin care cosmetic of the present invention preferably contains the following components in addition to the essential components (A) and (B).
(C) Porous powder By adding a porous powder having adsorptivity to the skin care cosmetic of the present invention, (A) the contaminant adsorbing function of the cosmetic of the present invention based on magnesium aluminate metasilicate is further enhanced. Can do.
The porous powder that can be blended in the present invention is not particularly limited as long as it can be blended in cosmetics and the like, and specific examples thereof include clay minerals such as silica, cellulose, zeolite, and bentonite.

The shape and average particle size of the porous powder are not particularly limited, but it is usually preferable to blend a spherical powder of about 1 to 100 μm from the viewpoint of usability and the like.
When the porous powder is blended, the blending amount is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 10% by mass or less. More preferably, it is 5 mass% or less, More preferably, it is 3 mass% or less. For example, it can mix | blend in 0.01-10 mass%, 0.05-5 mass%, or 0.1-3 mass%.

(D) Citric acid (salt)
By blending citric acid (salt) having buffering capacity into the skin care cosmetic of the present invention, the pH buffering capacity of the present invention based on (A) magnesium aluminate metasilicate can be further enhanced.

Citric acid / citrate forms a pH buffer system and functions to adjust the pH of the cosmetic. Typical examples of the citrate include sodium salt and potassium salt.
When citric acid (salt) is blended, the blending amount is preferably 0.01% by mass or more, more preferably 0.015% by mass or more, further preferably 0.2% by mass or more, and preferably 5% by mass. % Or less, more preferably 3% by mass or less, and further preferably 1% by mass or less. For example, it can mix | blend in 0.01-5 mass%, 0.01-3 mass%, or 0.01-1 mass%.

(E) Antioxidant The skin care cosmetic of the present invention can prevent skin damage caused by air pollutants and acidic liquids based on the adsorption ability and pH buffering ability of (A) magnesium aluminate metasilicate. By blending, the effect of preventing damage caused by an oxidizing substance is improved.
Antioxidants used in the present invention include sulfur-containing compounds such as thiotaurine, hypotaurine, glutathione, cysteine and cystine, α-tocopherol and its derivatives, black tea extract, green tea extract, thyme extract, and peach extract. Mention may be made of extracts.

  Sulfur-containing compounds such as thiotaurine and α-tocopherol may be blended in the form of a salt and are not particularly limited, but alkali metal salts such as sodium salt, potassium salt, lithium salt, magnesium salt, calcium salt, etc. Examples thereof include alkaline earth metal salts, ammonium salts and amino acid salts.

  When the antioxidant is blended, the blending amount is preferably 0.001% by mass or more, more preferably 0.0015% by mass or more, further preferably 0.02% by mass or more, and preferably 1% by mass or less. More preferably, it is 0.5 mass% or less, More preferably, it is 0.1 mass% or less. For example, it can mix | blend in 0.001-1 mass%, 0.001-0.5 mass%, or 0.001-0.1 mass%.

  The skin care cosmetics of the present invention can be provided in any form such as aqueous cosmetics (including microemulsions), oil-in-water emulsified cosmetics, water-in-oil emulsified cosmetics, and oily cosmetics. And you may contain the other arbitrary component which can be normally mix | blended with the cosmetics provided with these forms in the range which does not impair the effect of this invention.

  Examples of optional components that can be blended include, but are not limited to, oily components, surfactants, humectants, thickeners, alcohols, powder components, organically modified clay minerals, aqueous components, and various drugs.

  Examples of the oil component include camellia oil, macadamia nut oil, olive oil, castor oil, safflower oil, soybean oil, tea seed oil, cocoa butter, coconut oil, hydrogenated palm oil, palm oil, owl, hydrogenated castor oil, beeswax, Natural oils such as candelilla wax, carnauba wax, lanolin, liquid lanolin, jojoba wax, hard lanolin, polyoxyethylene lanolin alcohol ether, polyoxyethylene cholesterol ether, liquid paraffin, ozokerite, squalene, paraffin, ceresin, petrolatum, microcrystalline wax, etc. Hydrocarbon oils, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexylate, dipenta Synthetic oil components such as lithitol fatty acid ester, pentaerythritol tetra-2-ethylhexylate, glycerin tri-2-ethylhexylate, trimethylolpropane triisostearate, cetyl-2-ethylhexanoate, castor oil fatty acid methyl ester, dimethylpoly Form a chain polysiloxane such as siloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, cyclic polysiloxane such as decamethylpolysiloxane, dodecamethylpolysiloxane, tetramethyltetrahydrogenpolysiloxane, and three-dimensional network structure And silicones such as silicone resin and silicone rubber.

  Examples of the lipophilic nonionic surfactant include sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, penta-2-ethylhexyl acid Fatty acid esters of sorbitan such as diglycerol sorbitan, glycerol monostearate, glycerol oleate pyroglutamate, glycerol or polyglycerol fatty acid esters such as malate ester of glycerol monostearate, propylene glycol such as propylene glycol monostearate Fatty acid esters, hydrogenated castor oil derivatives, glycerin alkyl ethers and the like.

  Examples of the hydrophilic nonionic surfactant include polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monostearate, polyoxyethylene sorbit monolaurate, polyoxyethylene Fatty acid esters of polyoxyethylene sorbit such as sorbit monooleate, polyoxyethylene sorbite monostearate, polyoxyethylene glycerin monostearate, polyoxyethylene glycerin monoisostearate, polyoxyethylene glycerin triisostearate Polyoxyethylene fatty acid ester such as polyoxyethylene glycerin fatty acid ester, polyoxyethylene monooleate, polyoxyethylene distearate , Polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, polyoxyethylene stearyl ether, polyoxyethylene (2-octyldodecyl) ether, polyoxyethylene cholestanol ether, polyoxyethylene octyl Polyoxyethylene alkylphenyl ethers such as phenyl ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene dinonyl phenyl ether, pluronic surfactants such as pluronic, (polyoxyethylene polyoxypropylene) cetyl ether, (poly Oxyethylene polyoxypropylene) 2-decyl tetradecyl ether, (polyoxyethylene polyoxypropylene) butyl ether, hydrogenated Norin, polyoxyethylene polyoxypropylene alkyl ethers such as polyoxyethylene polyoxypropylene and glycerin ether, polyoxyethylene such as Tetronic or polyoxypropylene and ethylenediamine condensates, polyoxyethylene castor oil, poly Oxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil monoisostearate, polyoxyethylene hydrogenated castor oil triisostearate, polyoxyethylene hydrogenated castor oil monopyroglutamate monoisostearate, polyoxyethylene hydrogenated castor oil maleate, etc. Of polyoxyethylene castor oil or polyoxyethylene hydrogenated castor oil, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc. Alkanolamide, fatty acid ester of polyoxyethylene propylene glycol, alkylamine of polyoxyethylene, fatty acid amide of polyoxyethylene, fatty acid ester of sucrose, polyoxyethylene nonylphenol and formaldehyde condensate, alkylethoxydimethylamine oxide, Examples include trioleyl phosphate.

  Examples of the anionic surfactant include fatty acid soaps such as sodium laurate and sodium palmitate, salts of higher alkyl sulfates such as sodium lauryl sulfate and potassium lauryl sulfate, salts of polyoxyethylene lauryl sulfate and triethanolamine, Salts of alkyl ether sulfates such as sodium polyoxyethylene lauryl sulfate, N-acyl sarcosine acids such as sodium lauroyl sarcosine, N-myristoyl-N-methyl taurate sodium, coconut oil fatty acid methyl tauride sodium, lauryl methyl tauride sodium, etc. Higher fatty acid amide sulfonates, polyoxyethylene oleyl ether sodium phosphate, polyoxyethylene stearyl ether sodium phosphate and other phosphate ester salts, di-2-ethyl Sodium hexylsulfosuccinate, monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sulfosuccinates such as sodium lauryl polypropylene glycol sulfosuccinate, alkylbenzene sulfonates such as sodium dodecylbenzenesulfonate, triethanolamine dodecylbenzene, N -Sodium salt of lauroyl glutamate, N-acyl glutamic acid such as disodium N-stearoyl glutamate, sulfate of higher fatty acid ester such as hydrogenated coconut oil fatty acid sodium glycerol sulfate, carboxylate of polyoxyethylene alkyl ether, α-olefin Sulfonate, sulfonate of higher fatty acid ester, salt of secondary alcohol sulfate, higher fatty acid alkylol Examples include amide sulfate salts, sodium lauroyl monoethanolamide sodium succinate, N-palmitoyl aspartate ditriethanolamine, and palm oil fatty acid collagen hydrolyzed alkali salts.

  Examples of the cationic surfactant include alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, dialkyldimethylammonium salts such as distearyldimethylammonium chloride, poly (N, N′-dimethyl-3, chloride), and the like. 5-methylenepiperidinium), alkyl pyridinium salts such as cetylpyridinium chloride, alkyl quaternary ammonium salts, alkyl dimethyl benzyl ammonium salts, alkyl isoquinolinium salts, dialkyl morpholinium salts, polyoxyethylene alkyl amines, alkyl amines Salt, fatty acid derivative of polyamine, fatty acid derivative of amyl alcohol, benzalkonium chloride, benzethonium chloride, cationic polymer, β-N, N-dimethyl-N-acrylate of acrylic acid Ruan ammonio ethyl chloride-vinyl pyrrolidone copolymer, and the like.

  Examples of amphoteric surfactants include 2-undecyl-N, N, N-tris (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxydi Imidazoline-based amphoteric surfactants such as sodium, betaine-based amphoteric surfactants such as 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine, sulfobetaine Etc.

  Examples of the humectant include polyhydric alcohols such as ethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, glycerin, erythritol, trimethylolpropane, pentaerythritol, sorbitol, maltitol, diglycerin, and polyethylene glycol. Cholesteryl-12-hydroxystearate, sodium lactate, dl-pyrrolidone carboxylate, urea, diglycerin ethylene oxide / propylene oxide adduct and the like.

  Examples of thickeners include gum arabic, carrageenan, gum tragacanth, quince seed (quince), casein, sodium caseinate, dextrin, gelatin, sodium alginate, methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, Examples include sodium polyacrylate, carboxyvinyl polymer, guar gum, and xanthan gum.

  Examples of the higher alcohol include lauryl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, monostearyl glycerol ether (batyl alcohol), lanolin alcohol, cholesterol, phytosterol, isostearyl alcohol, octyldodecanol, and the like. Can be mentioned.

  Examples of the powder component include talc, kaolin, mica, sericite (sericite), phlogopite, synthetic mica, magnesium carbonate, calcium carbonate, aluminum silicate, silica, zeolite, barium sulfate, and calcined calcium sulfate (baked gypsum). , Calcium phosphate, fluorine apatite, hydroxyapatite, ceramic powder, metal soap (zinc myristate, calcium palmitate, aluminum stearate, etc.), inorganic powder such as boron nitride, polyamide resin powder (nylon powder), polyethylene powder, polymethacrylic acid Examples thereof include organic powders such as methyl powder, polystyrene powder, styrene-acrylic acid copolymer powder, polymethylsilsesquioxane powder, and cellulose powder. Moreover, as a synthetic resin emulsion, an acrylic resin emulsion, a polyvinyl acetate resin emulsion, etc. are mentioned, for example.

  As the organically modified clay mineral, a material obtained by adding a quaternary ammonium salt compound to a natural or synthetic smectite clay mineral such as bentonite by an ion exchange reaction is preferable. The organically modified clay mineral is not particularly limited as long as it is pharmaceutically acceptable, and examples thereof include dimethylammonium hectorite, benzyldimethylstearylammonium hectorite, distearyldimethylammonium chloride-treated aluminum magnesium silicate, and the like. Commercially available products include dimethyl distearyl ammonium hectorite sold under the name “Benton 38VCG” by Elementis and benzyldimethylstearyl ammonium hectorite sold under the name “Benton 27VCG” from Elementis. Preferably exemplified. In particular, when a water-in-oil emulsified cosmetic is used, the uniformity of the emulsion can be improved by blending an organically modified clay mineral.

  In addition to the above, disodium edetate, trisodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, sequestering agents such as gluconic acid, caffeine, tannin, verapamil, tranexamic acid and its derivatives, various Herbal medicine, tocopherol acetate, glycyrrhizic acid and its derivatives or salts thereof, other whitening agents such as ascorbic acid, magnesium phosphate, kojic acid, sugars such as glucose, fructose, mannose, sucrose, trehalose, etc. can do.

  The skin care cosmetic of the present invention is not particularly limited, but is preferably provided in the form of a cream, ointment, gel, lotion, emulsion or the like.

  The present invention will be described in further detail with reference to the following examples. The blending amount means mass% unless otherwise specified.

Example 1: Air pollutant adsorption effect A sample was prepared according to the formulation shown in Table 1 below.

A pseudo air pollutant (dispersion) having the following composition was mixed with each sample at 5% by mass and allowed to stand for 15 minutes.
・ Pseudo air pollutants: carbon black (1% by mass) + cetyl octoate (99% by mass)

The results of observing the appearance of the sample immediately after adding the pseudo air pollutant and after standing for 15 minutes were evaluated according to the following criteria. At the same time, the UV protection effect of each sample was measured and evaluated according to the following criteria. The results are also shown in Table 2.
・ Evaluation criteria Adsorption effect:
After standing for 15 minutes, carbon black settled and a transparent layer was seen: A
No sedimentation or clear layer of carbon black is seen: B
UV protection effect:
Absorbance of 1 or more at a wavelength of 300 nm: A
Absorbance at a wavelength of 300 nm is less than 1: B

  As is apparent from the results shown in Table 2, each sample containing the same amount of UV protection agent (UV absorber) has a sufficient UV protection ability. However, in Comparative Example 2 in which (vinyl dimethicone / methicone silsesquioxane) crosspolymer is blended as a powder component and in Comparative Example 3 in which no powder component is blended, carbon black which is a pseudo air pollutant can be adsorbed and precipitated. On the other hand, in Example 1 and Comparative Example 1 in which magnesium aluminate metasilicate or silica was blended, the carbon black settled to form a transparent layer.

Example 2: pH buffer effect A sample was prepared with the same formulation as in Table 1. A pseudo air pollutant similar to that in Example 1 was mixed with each sample, and an acidic solution (1.1% by mass citric acid aqueous solution) was further added 9 times (mass) of each sample, and then the pH of each sample was added. Was measured. The final composition of each sample after adding the acidic solution is as shown in Table 3 below.

In addition, the example whose pH value fluctuation | variation when adding an acidic solution was less than 1.0 was evaluated as "A", and the example which fluctuated 1.0 or more was evaluated as "B".

As shown in Table 3, only Example 2 containing magnesium aluminate metasilicate maintained a pH close to neutrality even when an acidic solution was added (showing buffer capacity), but no powder was added. In Comparative Example 4 and Comparative Examples 5 and 6 in which other powders were blended, acidification by an acidic solution could not be prevented.
That is, it was confirmed that only cosmetics containing a combination of magnesium aluminate metasilicate and a UV protection agent have all the effects of adsorption of air pollutants, pH buffering and UV protection.

Example 3: Formulation example (sunscreen cream)
Compounding ingredients Compounding amount (% by mass)
(1) Hydrophobized fine particle zinc oxide 20
(2) Hydrophobized fine particle titanium oxide 2
(3) Ethylhexyl methoxycinnamate 7
(4) Decamethylcyclopentasiloxane 10
(5) Isopropyl myristate 5
(6) Mineral oil 1
(7) Isostearic acid 2
(8) Methylsiloxane network polymer 5
(9) Polyether-modified silicone 4
(10) Organically modified bentonite 2
(11) Remaining ion exchange water (12) Glycerin 2.5
(13) 1,3-butylene glycol 5
(14) Alcohol 5
(15) Phenoxyethanol 0.5
(16) Citric acid 0.3
(17) Sodium citrate 0.2
(18) Magnesium aluminate metasilicate 0.1
(19) Cellulose powder 1.0
(20) Green tea extract 0.1

Production method:
(1) to (10) were mixed and dispersed. Thereafter, the aqueous phases (11) to (20) dissolved and mixed were added and mixed to obtain the intended sunscreen cream.
The obtained sunscreen cream had all the adsorbing ability of air pollutants, pH buffering ability and UV protection ability.

Example 4: Formulation example (sunscreen lotion (two-layer type))
Compounding ingredients Compounding amount (% by mass)
(1) Decamethylcyclopentasiloxane 20
(2) Isohexadecane 10
(3) Dimethylpolysiloxane 5
(4) Polyether-modified silicone 2
(5) Magnesium aluminate metasilicate 1
(6) Octocrylene 3
(7) Ethylhexyl methoxycinnamate 5
(8) Hydrophobized fine particles of zinc oxide 12
(9) Hydrophobized fine particle titanium oxide 5
(10) Polymethylmethacrylate spherical powder 3
(11) Cross-linked silicone / reticular silicone block copolymer 3
(12) α-Tocopherol 0.1
(13) Residual amount of ion-exchanged water (14) 2-amino-2-methyl-1,3-propanediol 1
(15) Phenylbenzimidazolesulfonic acid 2
(16) Glycerin 2
(17) 1,3-butylene glycol 3
(18) Paraben 0.2
(19) Citric acid 0.3
(20) Sodium citrate 0.1
(21) Silica 0.5

Production method:
(1) to (12) were mixed and dispersed. Thereafter, the aqueous phases (13) to (21) mixed and dissolved were added and mixed to obtain the desired sunscreen lotion.
The obtained sunscreen lotion had all the adsorption ability of air pollutants, pH buffering ability and UV protection ability.

Claims (6)

Skin care makeup comprising (A) 0.001-10% by weight magnesium aluminate metasilicate and (B) 1-40% by weight octyl methoxycinnamate and / or hexyl diethylaminohydroxybenzoyl benzoate Fee. The cosmetic according to claim 1, further comprising (C) a porous powder. The cosmetic according to claim 1 or 2, further comprising (D) citric acid (salt). (E) The cosmetic according to any one of claims 1 to 3, further comprising an antioxidant. The cosmetic according to claim 1, wherein the cosmetic is a sunscreen cosmetic. The cosmetic according to claim 1, wherein the cosmetic is an anti-pollution sunscreen cosmetic.