Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/27—Zinc; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
  • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

• the present invention relates to an aerosol-type cosmetic that is discharged in foamy form.
• UV protective cosmetics In recent years, various formulations of UV protective cosmetics have been developed. Among them, foaming aerosol type cosmetics are characterized by the fact that they do not drip easily when applied to the palm of the hand and provide a light feel when spread out. popular with general consumers. They are those in which a composition containing an ultraviolet absorber or ultraviolet scattering agent is filled in a pump foam container or an aerosol container together with high-pressure liquefied petroleum gas (LPG) to form foam.
• LPG liquefied petroleum gas
• An object of the present invention is to provide a foaming aerosol type cosmetic that can
• the present inventors have made intensive studies and found that a stock solution that is a water-in-oil emulsified composition using a specific polyether-modified silicone containing finely divided metal oxides whose surfaces have been subjected to a hydrophobizing treatment, and an injection A foaming aerosol-type cosmetic that is excellent in powder redispersibility even when left standing for a long period of time, as well as excellent foam retention and spreadability can be obtained by combining an aerosol with an agent. , completed the present invention.
• a foaming aerosol type cosmetic comprising a stock solution, which is a water-in-oil emulsion composition containing the following components (A) to (D), and a propellant.
• the ratio of the stock solution to the propellant is 85:15 to 98:2 [1].
• Foaming aerosol type cosmetics [3] The foaming aerosol type cosmetic according to [1] or [2], wherein the content of component (B) in the stock solution is 30 to 55% by mass.
• the foaming aerosol-type cosmetic of the present invention even if it is left standing for a long period of time, solidification of the fine particle metal oxide is unlikely to occur and it is excellent in redispersibility, so that it can be stored and used for a long period of time.
• the foamy aerosol-type cosmetic of the present invention does not aggregate powder even when a large amount of finely divided metal oxide is blended, so it forms soft and fine bubbles, spreads smoothly, and evenly coats the cosmetic film. Excellent in sex. Furthermore, it has both good foam retention and spreadability, and is excellent in usability. Therefore, it is useful as a sunscreen cosmetic or make-up cosmetic having a high UV protection effect.
• X to Y includes X and Y and means “X or more and Y or less”.
• Component (A) fine particle metal oxide surface-hydrophobized
• the component (A) used in the present invention is obtained by coating the surface of fine metal oxide particles with a hydrophobizing agent to improve the dispersibility in the oil phase.
• the fine particle metal oxide that can be surface-hydrophobized is not particularly limited as long as it is commonly used in cosmetics, etc.
• examples include zinc oxide, titanium oxide, oxide Cerium, zirconium oxide, iron oxide and the like can be mentioned.
• zinc oxide, titanium oxide, and cerium oxide from the viewpoint of high UV blocking effect by absorbing, scattering, reflecting, and quenching a wide range of UV rays.
• Zinc oxide and/or titanium oxide are more preferable, and zinc oxide is even more preferable.
• the shape of the fine metal oxide particles is not particularly limited, but examples thereof include granular, spherical, spindle-shaped, dendritic, and balloon-shaped. , from the viewpoint of UV protection effect and water resistance, it is preferably granular, spherical, or spindle-shaped.
• the particle size of the fine particle metal oxide is not particularly limited, but the average particle size is preferably 1 nm to 300 nm, more preferably 5 nm to 100 nm, from the viewpoints of reducing whitening, UV protection and water resistance. More preferably, it is 10 nm to 50 nm.
• the average particle size is measured as the volume average particle size (D50) using a laser scattering particle size distribution analyzer (manufactured by HORIBA).
• the surface hydrophobizing agent of component (A) is not particularly limited as long as it is commonly used in cosmetics and the like.
• examples include silicone treating agents, fluorine treating agents, organic titanate treating agents, Fatty acid treating agents, acyl amino acid treating agents and the like can be mentioned.
• silicone treatment agents and organic titanate treatment agents are preferred.
• silicone treatment agents include linear silicones such as low polymerization degree dimethylpolysiloxane, high polymerization degree dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, amino-modified silicones, alkyl-modified silicones, and alkoxy-modified silicones.
• modified silicones such as trimethylsiloxysilicate and acrylic-silicone graft copolymers, silicone resins, silicone rubbers, partially or fully crosslinked organopolysiloxanes, silylating agents, silane coupling agents, and the like.
• silane coupling agents One or more selected from these can be used. Among them, it is preferable to use silane coupling agents.
• trialkoxyalkylsilanes are preferred.
• a trialkoxyalkylsilane is a compound in which three alkoxy groups and one alkyl group are bonded to a silicon atom, and the alkoxy groups chemically modify the powder surface by reacting with hydroxyl groups on the powder surface. is a compound.
• the alkoxy group in the trialkoxyalkylsilane is preferably an alkoxy group having 1 to 3 carbon atoms, such as a methoxy group, an ethoxy group and a propoxy group.
• the alkyl group in the trialkoxyalkylsilane is preferably an alkyl group having 6 to 18 carbon atoms, and preferably includes a hexyl group, an octyl group, a decyl group and an octadecyl group.
• Such trialkoxyalkylsilanes are specifically trimethoxyhexylsilane, trimethoxyoctylsilane, trimethoxydecylsilane, trimethoxyoctadecylsilane, triethoxyhexylsilane, triethoxyoctylsilane, triethoxydecylsilane, tri and ethoxyoctadecylsilane.
• one or more selected from trimethoxyoctylsilane and triethoxyoctylsilane is more preferable from the viewpoint of usability such as stability over time and spreadability without creaking.
• organic titanate treating agents include long-chain carboxylic acid-type, pyrophosphate-type, phosphorous acid-type, amino acid-type alkyl titanates, etc., and alkyl titanates having an alkyl group of 8 to 24 carbon atoms are preferred.
• the alkyl titanates of long-chain carboxylic acid type include isopropyl triisostearoyl titanate, isopropyl trioctanoyl titanate, isopropyl dimethacryl isostearoyl titanate, isopropyl isostearoyl diacryl titanate, and diisostearoyl titanate.
• pyrophosphate-type alkyl titanates include tetraisopropylbis(dioctylphosphite) titanate, tetraoctylbis(ditridecylphosphite) titanate, tetra(2,2-diallyloxymethyl-1-butyl) bis(ditridecylphosphite) titanate and the like, and phosphite-type alkyl titanates include isopropyl tri(dioctylpyrophosphate) titanate, bis(dioctylpyrophosphate)oxyacetate titanate, bis(dioctylpyrophosphate)ethylene titanate and the like.
• amino acid-type alkyl titanates examples include isopropyl tri(N-amidoethyl/aminoethyl) titanate.
• alkyl titanates long-chain carboxylic acid-type alkyl titanates are preferable, and isopropyl triisostearoyl titanate is more preferable, from the viewpoint of stability over time, water resistance, and the like.
• the coating amount of the surface hydrophobizing agent in component (A) is not particularly limited, but from the viewpoint of water resistance and stability over time, the upper limit is , 60% by mass (hereinafter simply abbreviated as “%”) or less, more preferably 40% or less, even more preferably 20% or less, and the lower limit is 2% or more. It is preferably 5% or more, more preferably 10% or more.
• component (A) there are no particular restrictions on the method of surface treatment for component (A), and it can be produced by a generally known method.
• a surface treatment agent and powder particles to be treated are added to a solvent, stirred with a ball mill or the like, dried if necessary, washed with water, and filtered repeatedly to remove contaminants, followed by drying, By pulverizing, the desired surface-treated powder can be obtained.
• component (A) in the present invention is 10 to 20% in the undiluted solution that is the water-in-oil emulsion composition. If it exceeds, the stability over time and the spreadability may be deteriorated.
• Component (A) is preferably 12% or more, more preferably 13% or more, in the undiluted solution.
• Component (A) is preferably 18% or less, more preferably 17% or less, in the undiluted solution.
• Component (B) oil
• the component (B) oil used in the present invention is not particularly limited as long as it is commonly used in cosmetics and the like, and has properties such as solid, paste, and liquid, and physical properties such as polar and non-polar. Also, hydrocarbons, oils and fats, waxes, esters, fatty acids, silicone oils, fluorinated oils and the like can be mentioned regardless of the origin of vegetable oils, mineral oils, synthetic oils and the like.
• hydrocarbons such as isododecane, isohexadecane, light isoparaffin, liquid paraffin (mineral oil), squalane, squalene, ⁇ -olefin oligomer, polybutene, liquid isoparaffin, heavy liquid isoparaffin, polyisobutylene, and hydrogenated polyisobutene.
• Brainssica seed oil avocado oil, almond oil, apricot kernel oil, perilla oil, orange oil, olive oil, kiwi seed oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, safflower oil, sage oil, soybean oil, Tea seed oil, corn oil, rapeseed oil, evening primrose oil, camellia oil, persic oil, pearl barley oil, peanut oil, sunflower oil, grape seed oil, meadowfoam oil, rosemary oil, jojoba oil, macadamia nut oil, lavender oil, rose Fats and oils such as hip oil and mink oil; glyceryl tri-2-ethylhexanoate, isotridecyl isononanoate, isononyl isononanoate, cetyl 2-ethylhexanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, myristic acid Octyld
• Component (B) preferably contains an ester oil from the viewpoint of the solubility of the ultraviolet absorber described later and the feeling of use.
• an ester oil from the viewpoint of the solubility of the ultraviolet absorber described later and the feeling of use.
• propylene glycol dicaprate, alkyl benzoate (C12-15) It is more preferable to contain one or more selected from propylene glycol and cetyl 2-ethylhexanoate (capric acid).
• Component (B) may contain an oil-soluble ultraviolet absorber, and is not particularly limited as long as it is commonly used in cosmetics and the like, and may be solid, pasty, or liquid. .
• an oil-soluble ultraviolet absorber for example, 2-hydroxy-4-methoxybenzophenone, 2,4,6-trianilino-p-(carbo-2′-ethylhexyl-1′-oxy)-1,3,5-triazine, salicylic acid- 2-ethylhexyl, ethyl para-dihydroxypropylbenzoate, ethylhexyl methoxycinnamate, 4-tert-4'-methoxydibenzoylmethane, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester (diethylaminohydroxybenzoyl hexyl benzoate), Polysilicone-15, 2-ethylhexyl dimethoxybenzy
• ethylhexyl methoxycinnamate para-methoxycinnamate-2-ethylhexyl
• 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester 2,4-bis[ ⁇ 4- (2-ethylhexyloxy)-2-hydroxy ⁇ -phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine
• One or more selected from the group consisting of anilino]-1,3,5-triazine and 4-tert-butyl-4′-methoxydibenzoylmethane is more preferable.
• component (B) in the present invention is not particularly limited, but the lower limit is preferably 30% or more, more preferably 40% or more, in the stock solution that is the water-in-oil emulsion composition. Moreover, as an upper limit, 55% or less is preferable and 50% or less is more preferable. Within this range, the stability over time and spreadability are more excellent, which is more preferable.
• component (C) non-crosslinked polyether-modified silicone used in the present invention is a copolymer having at least an organopolysiloxane group and a hydrophilic group having a plurality of ether structures, and the organopolysiloxane group is It may be a graft copolymer having a hydrophilic group in a side chain as a main chain, or a linear block copolymer in which an organopolysiloxane group and a hydrophilic group are alternately bonded. does not contain a crosslinked structure.
• the organopolysiloxane group may be linear or may have a branched structure, and examples of the hydrophilic group include a polyoxyalkylene group and a polyglyceryl group.
• those having a linear organopolysiloxane group as a main chain include, specifically, polyoxyalkylene-modified organopolysiloxane (commercially available, for example, PEG10-dimethicone). KF-6017" manufactured by Shin-Etsu Chemical Co., Ltd.), polyoxyalkylene/alkyl co-modified organopolysiloxane (commercially available, for example, lauryl PEG/PPG-18/18 methicone "5200 Formulation Aid” manufactured by Dow Corning Toray) etc.
• polyoxyalkylene-modified organopolysiloxane commercially available, for example, PEG10-dimethicone
• KF-6017 manufactured by Shin-Etsu Chemical Co., Ltd.
• polyoxyalkylene/alkyl co-modified organopolysiloxane commercially available, for example, lauryl PEG/PPG-18/18 methicone "5200 Formulation Aid” manufactured by Dow Corning Toray
• a main chain having an organopolysiloxane group having a branched structure silicone branched polyether-modified silicone
• PEG-9 polydimethylsiloxyethyl dimethicone commercially available, for example, "KF- 6028” manufactured by Shin-Etsu Chemical Co., Ltd.
• lauryl PEG-9 polydimethylsiloxyethyl dimethicone commercially available, for example, "KF-6038” manufactured by Shin-Etsu Chemical Co., Ltd.
• block copolymer type examples include polyoxyethylene/butylene/dimethylpolysiloxane copolymer (commercially available, for example, "FZ-2250” manufactured by Dow Corning Toray Co., Ltd.), polyoxyethylene/poly Oxypropylene/butylene/dimethylpolysiloxane copolymer (commercially available products include “FZ-2233” manufactured by Dow Corning Toray Co., Ltd., and "SILWET 236-L” manufactured by Nihon Unicar Co., Ltd.).
• Component (C) may be used alone or in combination of two or more.
• the graft copolymer type is preferred, and the hydrophilic group is preferably a polyoxyalkylene chain, particularly polyoxyethylene. Chains are preferred, and non-crosslinked polyether-modified silicones with an oxyethylene degree of polymerization of 7-11 are particularly preferred.
• the organopolysiloxane group those having a branched structure are preferable, and it is more preferable to use both a linear structure and a branched structure.
• the average HLB of component (C) is preferably 1-7, more preferably 2.5-5.
• the HLB Hydrophilic-lipophilic Balance
• HLB "inorganic value (IV)/organic value (OV)” x 10 (Formula 1) (See Yoshio Koda, "Organic Conceptual Diagram -Basics and Applications-", pp. 11-17, Sankyo Publishing, 1984)
• the content of the component (C) in the present invention is not particularly limited. is preferred, and 0.2% or more is more preferred.
• the upper limit is preferably 3% or less, more preferably 2% or less, from the viewpoint of elongation and spreadability.
• Component (D) partially crosslinked polyether-modified silicone
• the component (D) cross-linked polyether-modified silicone used in the present invention is a polymer obtained by three-dimensionally cross-linking organopolysiloxane, and has a hydrophilic group such as a polyoxyalkylene group or a polyglycerin group in the molecule. It may be one in which a group is introduced, and one in which an organic group such as an alkyl group is co-modified.
• Component (D) is not particularly limited, but for example, partially crosslinked polyether-modified silicone such as (dimethicone/(PEG-10/15)) crosspolymer, partially crosslinked such as (PEG-15/lauryl dimethicone) crosspolymer, etc. type alkyl-polyether co-modified silicone, partially cross-linked polyglycerin-modified silicone such as (dimethicone/polyglycerin-3) crosspolymer, partially cross-linked alkyl-polyglycerin co-modified silicone such as (lauryl dimethicone/polyglycerin-3) crosspolymer Examples include modified silicones, and one or more of these can be used.
• Such component (D) is commercially available in the form of a mixture with silicone oil
• “KSG-210" solid content: 20-30%) is a mixture of partially crosslinked polyether-modified silicone and dimethylpolysiloxane.
• “KSG-310” solid content 25-35%
• “KSG-320” solid content 20-30%)
• “KSG-330” as a mixture of partially crosslinked alkyl-polyether co-modified silicone and oil agent (solid content 15-25%)
• KSG-340 solid content 25-35%
• KSG-710 solid content 20-30%) as a mixture of partially crosslinked polyglycerin-modified silicone and dimethylpolysiloxane
• KSG-810 solid content 25-35%
• “KSG-820” solid content 20-30%)
• “KSG-830” as a mixture of partially crosslinked alkyl-polyglycerin co-modified silicone and oil agent ” (solid content 15 to 25%)
• “KSG-840” solid content 25
• component (D) in the present invention is not particularly limited. The above is more preferable. Moreover, as an upper limit, 5% or less is preferable and 3% or less is more preferable. If the component (D) is within this range, it is preferable because it is possible to obtain a product that spreads more easily and has excellent stability over time and foam retention.
• the stock solution of the present invention is a water-in-oil emulsified composition
• an aqueous component such as water or a lower alcohol is added as a component constituting the aqueous phase in a quantitative amount that does not impair the effects of the present invention.
• component (C) surfactants other than component (D)
• powders other than component (A) water-soluble polymers, film-forming agents, antioxidants, pH adjusters, chelating agents, cosmetic ingredients, preservatives agents, fragrances, cooling agents, and the like.
• the aqueous component may be any component as long as it is water or a component soluble in water.
• examples include glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol and polyethylene glycol, glycerin, diglycerin and polyglycerin.
• glycerols such as sorbitol, maltitol, sugar alcohols such as glucose, lower alcohols such as ethanol, polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3BO) (8EO) (5PO), polyoxypropylene (9 ) glycerin derivatives such as diglyceryl;
• the method for producing the stock solution of the present invention is not particularly limited, and it is prepared by a conventional method.
• part of component (B) and component (A) are kneaded in advance using a roll mill, bead mill, or the like, and the remainder of component (B), component (C), and component (D) are added and mixed under heating.
• a water-in-oil type composition can be obtained by adding an aqueous component to the uniformly dispersed mixture and emulsifying it.
• the propellant used in the present invention contains a liquefied gas obtained by liquefying a gas that is gas at atmospheric pressure under high pressure.
• a gas that is gas at atmospheric pressure under high pressure.
• hydrocarbons having 2 to 5 carbon atoms include hydrocarbons having 2 to 5 carbon atoms and ethers such as dimethyl ether and diethyl ether.
• hydrocarbons having 2 to 5 carbon atoms include ethane, propane, n-butane, isobutane, n-pentane, isopentane, and neopentane.
• LPG liquefied petroleum gas
• propane and butane as main components is preferable, and it is preferable to use one adjusted to a pressure of 0.3 to 0.8 MPa at 20°C.
• the propellant of the present invention can contain carbon dioxide, nitrogen, argon, etc. within a range that does not impair the effects of the present invention.
• the filling ratio of the stock solution to the propellant in the foaming aerosol type cosmetic of the present invention is preferably 85:15 to 98:2, more preferably 90:10 to 96:4, in mass ratio. Within this range, the stability is excellent even when left standing for a long period of time, and the foam retention is also good, which is preferable.
• the filling method of the foaming aerosol type cosmetic of the present invention is not particularly limited, but a stock solution prepared by a conventional method is filled in a pressure-resistant container, an aerosol valve is fixed to the container, and a propellant is injected through the valve. . Furthermore, an aerosol product can be obtained by attaching an injection member according to the purpose to the aerosol valve.
• the foamy aerosol-type cosmetic of the present invention has an ultraviolet protection effect, so it can be applied as a makeup base, foundation, daytime serum, sunscreen, and the like.
• Examples 1 to 11 and Comparative Examples 1 to 3 Foaming aerosol-type sunscreens
• Foaming aerosol-type sunscreens having the compositions shown in Table 1 below were prepared by the following production method, and foam retention, stability over time, and elongation The spreadability was evaluated and judged according to the evaluation method and judgment criteria shown below, and the results are also shown in Table 1.
• KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)
• KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.)
• KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.): solid content 20 to 30%
• KSG-710 (manufactured by Shin-Etsu Chemical Co., Ltd.): solid content 20 to 30%
• KSG-310 (manufactured by Shin-Etsu Chemical Co., Ltd.): solid content 25 to 35%
• Rheopearl ISK2 (manufactured by Chiba Flour Milling Co., Ltd.)
• KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.)
• the foaming aerosol type sunscreens of Examples 1 to 11 are all excellent in foam retention and have good stability over time, so they are used in a fine foam state until the end. It was possible to do so, it spread smoothly, and it was excellent also in an ultraviolet protection effect.
• Comparative Example 1 in which the component (A) was excessive, was inferior in all evaluation items due to caking.
• Comparative Example 2 in which the component (C) was not blended, caused caking and was inferior in terms of foam retention and stability over time.
• Comparative Example 3 in which the component (D) was not blended was inferior in foam retention due to insufficient emulsifying power, and was also inferior in spreadability.
• Example 12 Non-chemical sunscreen (ingredient) (%) (1) Triethoxyoctylsilane-treated zinc oxide (Note 8) 20 (2) Stearic acid-treated titanium oxide (Note 9) 5 (3) Polyhydroxy stearic acid 0.3 (4) PEG-9 polydimethylsiloxyethyl dimethicone (Note 2) 0.2 (5) cetyl ethylhexanoate 15 (6) Dimethicone (6CS) 5 (7) Diphenyl dimethicone (Note 10) 5 (8) Diphenylsiloxyphenyl trimethicone (Note 11) 5 (9) PEG-10 dimethicone (Note 12) 0.7 (10) (Dimethicone/(PEG-10/15)) crosspolymer (Note 3) 1 (11) Talc 5 (12) Mica 1 (13) Ethanol 7 (14) Purified water remaining amount (15) Na chloride 0.3 (16) 1,3-butylene glycol 5 (17) Glycerin 1 (18) Dipropylene glyco
• A Uniformly mix and disperse components (7) to (10).
• B Components (1) to (6) are uniformly powder-dispersed.
• C Add B to A and mix and disperse uniformly.
• D Components (11) and (12) are added to C and uniformly mixed and dispersed.
• E Components (13) to (22) are uniformly mixed.
• F E is added to D and emulsified to obtain a water-in-oil emulsion composition.
• 10 parts of liquefied petroleum gas 0.4 MPa
• the non-chemical sunscreen of Example 12 had excellent stability over time, achieved both good foam retention and good spreadability, and had a uniform cosmetic film, as well as an excellent UV protection effect.
• Example 13 Base cosmetics (ingredients) (%) (1) Triethoxyoctylsilane (4%) treated zinc oxide (35 nm) 15 (2) PEG-9 polydimethylsiloxyethyl dimethicone (Note 2) 0.5 (3) cetyl ethylhexanoate 15 (4) Dimethicone (6CS) 5 (5) Diphenyl dimethicone (Note 10) 5 (6) Diphenylsiloxyphenyl trimethicone (Note 11) 5 (7) PEG-10 dimethicone (Note 12) 0.7 (8) (Dimethicone/(PEG-10/15)) crosspolymer (Note 10) 1 (9) Dimethicone (2%) treated talc 5 (10) Mica 1 (11) Ethanol 7 (12) Purified water remaining amount (13) Na chloride 0.3 (14) 1,3-butylene glycol 5 (15) Glycerin 1 (16) Phenoxyethanol 0.3 (17) Red 226 0.01 (18) Gunjo 0.05
• the base cosmetic of Example 13 was excellent in stability over time, had a uniform cosmetic film because it achieved both good foam retention and spreadability, and was also excellent in UV protection effect.

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