Topical skin composition

Abstract

To provide cosmetics that has sufficiently long-lasting effect and does not cause dryness after application.SOLUTION: An external composition for skin contains an (ethylene / propylene) copolymer, and an ester compound of polyhydroxy fatty acid and polyhydric alcohol and / or isostearyl glyceryl.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a topical skin composition containing a specific hydrocarbon oil agent and a fatty acid ester.

Background Art

[0002] Lipstick makeup can be broadly divided into two elements: a long-lasting effect in which color and gloss remain on the lips for a long time, and a secondary adhesion-free effect in which lipstick does not adhere to tableware such as coffee cups and straws (Non-Patent Document 1). Conventionally, in the field of lipsticks, research has been conducted to improve makeup retention from these two viewpoints. In particular, in order to improve the secondary adhesion-free effect, a lip cosmetic having a property of separating a silicone-based oil agent into the upper layer and an ester oil into the lower layer after application to the skin has been proposed (for example, Patent Documents 1 to 5).

[0003] Patent Document 1 describes a lip cosmetic containing a specific amount of glycerin monoisostearate, methylphenyl silicone, water and / or glycerin, and wax. Patent Document 2 describes a lip cosmetic containing a specific amount of hydrogenated polyisobutene, methylphenyl silicone, a lipophilic surfactant, and wax. Patent Document 3 describes a lip cosmetic containing a specific amount of a block-type alkylene oxide derivative, dimethyldiphenyl polysiloxane, diglyceryl diisostearate and / or diglyceryl triisostearate.

[0004] Further, Patent Document 4 discloses an oily cosmetic characterized by containing a polyhydric alcohol-modified silicone, an ester oil that is liquid at normal temperature, a coloring agent, an oil agent having a refractive index of 1.47 or more at 25°C, and a triglyceride having a melting point of 35 to 45°C and being solid at normal temperature. Further, Patent Document 4 describes that when the oil-based cosmetic is applied to the skin or lips, the polyhydric alcohol-modified silicone and the oil agent are phase-separated by the moisture in the skin and the moisture in the air, giving luster to the makeup film. The polyhydric alcohol-modified silicone increases its viscosity due to moisture, making the makeup film firm and improving the makeup persistence (paragraph 0006).

[0005] In addition, Patent Document 5 discloses a topical skin composition containing polyglyceryl isostearate, which has excellent water hydration film-forming ability and good makeup retention, and a silicone-based oil agent. Patent Document 6 discloses a topical skin composition that can maintain a stable gelled state by containing hydrogenated polyisobutene and a specific fatty acid polyglycerin, and has an excellent secondary adhesion resistance effect.

[0006] As a method for enhancing the secondary adhesion resistance effect of cosmetics, a method of blending both a volatile oil agent and a silicone-based oil agent has also been proposed. Patent Document 7 discloses a stick cosmetic having a secondary adhesion resistance effect, which is formulated with a silicone surfactant in combination with a volatile oil component.

[0007] In addition, in the case of oil-based lip cosmetics, in order to make the composition gently gel, a method of adding dextrin fatty acid ester (Leopal (registered trademark)) has been common (Patent Document 8).

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Patent Document 8

Non-Patent Document

[0009]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0010] Conventional cosmetics using phase separation of oil agents have characteristics such as a high anti-redeposition effect. However, since dextrin fatty acid ester or the like is used when hardening the composition, a large amount of highly polar oil agent must be blended at the same time, and the problems are that the composition easily falls off from the skin and is inferior in the long-lasting effect. In addition, cosmetics containing volatile oil agents and silicone-based oil agents are excellent in makeup retention such as anti-redeposition effect and long-lasting effect, but have problems such as a feeling of dryness after application.

[0011] In view of such a situation, an object of the present invention is to provide a topical composition for skin that is excellent in long-lasting effect and does not cause a feeling of dryness after application. Furthermore, an object of the present invention is to provide a topical composition for skin having stability over time of the formulation.

Means for Solving the Problems

[0012] The present invention for solving the above problems is a topical composition for skin containing an (ethylene / propylene) copolymer, an ester compound of a polyhydroxy fatty acid and a polyhydric alcohol, and / or isostearyl glyceryl. The skin external composition of the present invention has improved adhesion of the cosmetic film to the skin and is excellent in the long-lasting effect.

[0013] In a preferred form of the present invention, the ester compound is characterized by being polyglyceryl polyricinoleate. By including such an ester compound, the long-lasting effect is improved.

[0014] In a preferred form of the present invention, the ester compound is characterized by being an ester compound of polyhydroxy fatty acid and pentaerythritol. By including such an ester compound, the long-lasting effect is improved.

[0015] In a preferred form of the present invention, the ester compound is characterized by being an ester compound of polyhydroxystearic acid and polyethylene glycol. By including such an ester compound, the long-lasting effect is improved.

[0016] In a preferred form of the present invention, the mass ratio of the content of the (ethylene / propylene) copolymer to the content of the ester compound and / or the isostearyl glyceryl is 10:1 to 1:20. The skin external composition of the present invention in which the mass ratio of the (ethylene / propylene) copolymer to the ester compound and / or the isostearyl glyceryl is within the above range is particularly excellent in the long-lasting effect.

[0017] In a preferred form of the present invention, it includes a silicone-based oil agent having a unit structure represented by at least the following chemical formula (1) as a unit structure.

[0018] Chemical formula (1)

Chemical formula

[0019] The skin external composition of the present invention containing the silicone oil agent is excellent in the effect of reducing secondary adhesion.

[0020] In a preferred form of the present invention, it contains a silicone-based oil agent having a unit structure represented by the following chemical formula (2) and / or a unit structure represented by the following chemical formula (3).

[0021] Chemical formula (2)

Chemical formula

[0022] Chemical formula (3)

Chemical formula

[0023] The skin external composition of the present invention containing the silicone oil agent is excellent in the effect of reducing secondary adhesion.

[0024] In a preferred form of the present invention, the silicone-based oil agent is diphenyldimethylsilicone. The skin external composition of the present invention containing diphenyldimethylsilicone is excellent in the effect of reducing secondary adhesion.

[0025] In a preferred form of the present invention, it contains hydrogenated polyisobutene. By containing hydrogenated polyisobutene, a gel having good adhesiveness can be formed.

[0026] In a preferred form of the present invention, it contains a coloring material. The ester compound of polyhydroxy fatty acid and polyhydric alcohol, and isostearyl glyceryl contained in the skin external composition of the present invention can also hold the coloring material, so that color fading hardly occurs.

[0027] The skin external composition of the present invention is preferably a lip cosmetic.

Effects of the Invention

[0028] According to the present invention, it is possible to provide a topical skin composition that has no drying feeling after application and is excellent in long-lasting effect. Furthermore, it is possible to provide a topical skin composition having stability over time.

Mode for Carrying Out the Invention

[0029] Hereinafter, the viscosity of the components used in the present invention is represented by a numerical value obtained by a standard method (for example, measurement using a B-type viscometer (DIGITALVISMETRONVDA: manufactured by Shibaura Systems Co., Ltd.)) at 20°C and 1 atm.

[0030] The topical skin composition of the present invention contains an (ethylene / propylene) copolymer, an ester compound of a polyhydroxy fatty acid and a polyhydric alcohol (hereinafter, also simply referred to as an ester compound) and / or isostearyl glyceryl as essential components. By having these components, the topical skin composition of the present invention exhibits excellent adhesion to the skin and is excellent in long-lasting effect.

[0031] The (ethylene / propylene) copolymer used in the present invention is a low-polarity hydrocarbon-based oil agent. By having the (ethylene / propylene) copolymer, the adhesion of the composition to the skin is enhanced and the long-lasting effect is improved. Furthermore, by having the (ethylene / propylene) copolymer, the composition can be gelled at an appropriate viscosity to obtain a composition having an excellent feeling of use during application.

[0032] It is preferable to use a mixture in which the (ethylene / propylene) copolymer is mixed with an arbitrary solvent (hereinafter, simply referred to as an (ethylene / propylene) copolymer mixture). Examples of the arbitrary solvent include oil agents such as squalane, isododecane, and hydrogenated polyisobutene, and among them, it is preferable to use isododecane. Moreover, the appearance of the (ethylene / propylene) copolymer mixture is preferably transparent to translucent.

[0033] The content of any of the solvents is preferably 60 to 95% by mass, more preferably 70 to 95% by mass, based on the (ethylene / propylene) copolymer mixture.

[0034] The content of the (ethylene / propylene) copolymer is preferably 5 to 40% by mass, more preferably 5 to 30% by mass, based on the (ethylene / propylene) copolymer mixture. In the present invention, when simply described as "(ethylene / propylene) copolymer", it refers to the copolymer alone excluding the above solvent.

[0035] The viscosity of the (ethylene / propylene) copolymer mixture at 20°C is preferably 70,000 to 400,000 mPa·s, more preferably 150,000 to 380,000 mPa·s, and even more preferably 200,000 to 360,000 mPa·s.

[0036] Examples of commercially available products of such (ethylene / propylene) copolymer mixtures include "Creagel (registered trademark) Crystal ID", "Creagel (registered trademark) Crystal VS", "Creagel (registered trademark) Crystal DF5", etc. manufactured by The Innovation Company.

[0037] The content of the (ethylene / propylene) copolymer is preferably 0.01 to 24% by mass, more preferably 0.025 to 10% by mass, and even more preferably 0.05 to 6% by mass, based on the total amount of the topical skin composition. When used in the form of a (ethylene / propylene) copolymer mixture, the content of the (ethylene / propylene) copolymer mixture is preferably 0.2 to 60% by mass, more preferably 0.5 to 50% by mass, and even more preferably 1 to 30% by mass, based on the total amount of the topical skin composition. By setting the content of the (ethylene / propylene) copolymer within the above range, a topical skin composition having an especially excellent long-lasting effect can be obtained.

[0038] The ester compound used in the present invention is Polyhydroxy fatty acid an ester of a polyhydric alcohol. By blending such an ester compound, the skin external composition of the present invention becomes a composition excellent in a long-lasting effect.

[0039] The degree of polymerization of the hydroxy fatty acid of the polyhydroxy fatty acid constituting the ester compound is preferably 3 to 20, more preferably 3 to 10.

[0040] The hydroxy fatty acid may be unsaturated or saturated, and may also have a branched chain. The number of carbon atoms of the hydroxy fatty acid is preferably 12 to 24, more preferably 16 to 20. In addition, the total number of carbon atoms in the polyhydroxy fatty acid is preferably 24 to 216, more preferably 50 to 130. Examples of the hydroxy fatty acid preferably include hydroxystearic acid, ricinoleic acid (ricinol acid), etc.

[0041] The polyhydric alcohol constituting the ester compound may be a monomer or may form a polymer, but it is more preferable that a polymer is formed. The valence of the polyhydric alcohol is preferably 1 to 10, more preferably 2 to 6. Examples of such a polyhydric alcohol preferably include sugar alcohols, monomers or polymers of sugar alcohols. Specifically, glycerin, polyglycerin, pentaerythritol, dipentaerythritol, polyethylene glycol (PEG), polypropylene glycol (PPG), ethylene glycol, propylene glycol, etc. can be preferably exemplified. In addition, the degree of polymerization of polyglycerin is preferably 1 to 10, more preferably 2 to 8, and further preferably 3 to 6. The degree of polymerization of polyethylene glycol is preferably 3 to 150, more preferably 8 to 100, and further preferably 10 to 60.

[0042] In the topical skin composition of the present invention, it is preferable to use polyglyceryl polyricinoleate as the ester compound. Examples of polyglyceryl polyricinoleate include polyglyceryl polyricinoleate-3, polyglyceryl polyricinoleate-5, polyglyceryl polyricinoleate-6, polyglyceryl polyricinoleate-10, and polyglyceryl polyricinoleate-4, and more preferably, polyglyceryl polyricinoleate-5 can be exemplified. Commercially available products of polyglyceryl polyricinoleate-5 include "Sunsoft (registered trademark) No. 818R-C" manufactured by Sun Chemical Corporation, etc.

[0043] In the topical skin composition of the present invention, it is preferable to use an ester compound of polyhydroxy fatty acid and pentaerythritol as the ester compound.

[0044] Examples of the hydroxy fatty acid constituting the polyhydroxy fatty acid include hydroxystearic acid, hydroxy lauric acid, hydroxymyristic acid, hydroxypalmitic acid, etc., and among them, hydroxystearic acid is preferable. Pentaerythritol may be monopentapentaerythritol or a condensate of a plurality of pentaerythritols. Examples include monopentapentaerythritol, dipentaerythritol, tripentaerythritol, etc., and among them, monopentapentaerythritol or dipentaerythritol is preferable. In addition, the number of polyhydroxy fatty acid groups that form an ester bond with pentaerythritol and its condensate is not particularly limited, and it may be any number such as mono, di, tri, penta, hexa, etc.

[0045] Examples of the ester compound of polyhydroxy fatty acid and pentaerythritol include pentaerythrityl monopolyhydroxystearate, pentaerythrityl dipolyhydroxystearate, pentaerythrityl tripolyhydroxystearate, pentaerythrityl tetrapolyhydroxystearate, dipentaerythrityl monopolyhydroxystearate, dipentaerythrityl dipolyhydroxystearate, dipentaerythrityl tripolyhydroxystearate, dipentaerythrityl tetrapolyhydroxystearate, dipentaerythrityl pentapolyhydroxystearate, dipentaerythrityl hexahydroxystearate, etc., and particularly preferably, dipentaerythrityl tripolyhydroxystearate can be exemplified. Examples of commercially available dipentaerythrityl tripolyhydroxystearate include "Saracos (registered trademark) WO-6" manufactured by Nisshin OilliO Group, Ltd.

[0046] In the topical skin composition of the present invention, as the ester compound, it is preferable to use an ester compound of polyhydroxystearic acid and polyethylene glycol. As such an ester compound, it is preferable to use PEG-30 dipolyhydroxystearate. Examples of commercially available PEG-30 dipolyhydroxystearate include "Cithrol DPHS" manufactured by Croda Japan Co., Ltd.

[0047] The content of the ester compound is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass, and still more preferably 1 to 7% by mass based on the total amount of the topical skin composition.

[0048] The mass ratio of the (ethylene / propylene) copolymer to the ester compound is preferably 10:1 to 1:20, more preferably 10:1 to 1:10, and still more preferably 10:1 to 1:5.

[0049] Further, in one form of the topical skin composition of the present invention, isostearyl glyceryl is included together with the (ethylene / propylene) copolymer. Examples of commercially available isostearyl glyceryl include Penetol (registered trademark) GE-IS (manufactured by Kao Corporation) and the like.

[0050] The content of isostearyl glyceryl is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass, and still more preferably 1 to 7% by mass based on the total amount of the topical skin composition.

[0051] The mass ratio of the (ethylene / propylene) copolymer to isostearyl glyceryl is preferably 10:1 to 1:20, more preferably 10:1 to 1:10, and still more preferably 10:1 to 1:5.

[0052] It is preferable to use a silicone-based oil having a unit structure represented by the following chemical formula (1) in the topical skin composition of the present invention.

[0053] Chemical formula (1)

Chemical formula

[0054] In addition, the topical skin composition of the present invention preferably contains a silicone-based oil having a unit structure represented by the following chemical formula (2) and / or a unit structure represented by the following chemical formula (3).

[0055] Chemical formula (2)

Chemical formula

[0056] Chemical formula (3)

Chemical formula

[0057] Examples of such silicone-based oils include diphenylmethylsiloxyphenylmethylcon / phenylsilsesquioxane copolymer, diphenyldimethylsilicone, trimethylsiloxyphenyldimethylsilicone, dimethicone, etc. Particularly preferred examples include diphenyldimethylsilicone and trimethylsiloxyphenyldimethylsilicone.

[0058] The skin external composition of the present invention containing the silicone-based oil separates into an adherent layer containing hydrogenated polyisobutene and specific fatty acid polyglycerin and a surface layer containing the silicone-based oil after application to the skin. Therefore, it is possible to provide a skin external composition with good makeup retention having gloss on the film surface over time.

[0059] As the silicone-based oil, an oil with an IOB value of 0.1 or less that is liquid at 25°C, an oil with an average solubility parameter at 25°C of less than 7.0 (J / cm 3 )1 / 2, and an oil having no polar groups such as carboxyl groups, phosphate groups, and amino groups are preferred.

[0060] The viscosity of the silicone-based oil is preferably 60,000 mPa·s or less, more preferably 2,000 mPa·s or less at 20°C.

[0061] As such silicone-based oils, commercially available products such as PH-1560 (diphenylmethylsiloxyphenylmethylcon / phenylsilsesquioxane copolymer, Toray Dow Corning), silicone KF54 (diphenyldimethylsilicone, Shin-Etsu Silicone), silicone KF54HV (diphenyldimethylsilicone, Shin-Etsu Silicone), PDM1000 (trimethylsiloxyphenyldimethylsilicone, Asahi Kasei Wacker Silicone), silicone KF96-10 (dimethicone, Shin-Etsu Silicone) may be used.

[0062] In the present invention, the content of the silicone-based oil is preferably 1 to 65% by mass, more preferably 10 to 60% by mass, still more preferably 10 to 40% by mass, and particularly preferably 15 to 40% by mass. By setting the content of the silicone-based oil agent within the above range, a skin external composition having an excellent secondary adhesion resistance effect can be obtained.

[0063] (Ethylene / propylene) copolymer and the content mass ratio of the silicone-based oil agent are preferably 2:1 to 1:100, more preferably 1:1 to 1:50, and even more preferably 1:2 to 1:25.

[0064] The content mass ratio of the ester compound and the silicone-based oil agent is preferably 10:1 to 1:40, more preferably 5:1 to 1:30, and even more preferably 1:1 to 1:20.

[0065] The content mass ratio of isostearyl glyceryl and the silicone-based oil agent is preferably 10:1 to 1:40, more preferably 5:1 to 1:30, and even more preferably 1:1 to 1:20.

[0066] The skin external composition of the present invention preferably contains hydrogenated polyisobutene. In the present invention, hydrogenated polyisobutene with any degree of polymerization can be used, but hydrogenated polyisobutene having a high viscosity with a viscosity at 20°C of preferably 10000 mPa·s or more, more preferably 50000 mPa·s or more, even more preferably 100000 mPa·s or more, even more preferably 120000 mPa·s or more, and even more preferably 130000 mPa·s or more (hereinafter also referred to as highly viscous hydrogenated polyisobutene) is preferably used.

[0067] The upper limit of the viscosity of the highly viscous hydrogenated polyisobutene is not particularly limited, but the viscosity at 20°C is preferably 2000000 mPa·s or less, more preferably 1800000 mPa·s or less, even more preferably 1400000 mPa or less, and even more preferably 1200000 mPa·s or less.

[0068] By using the highly viscous hydrogenated polyisobutene within the above-described viscosity range, a gel that exhibits good adhesion can be formed, and a topical skin composition excellent in makeup retention can be provided.

[0069] The content of the highly viscous hydrogenated polyisobutene is preferably 0.01 to 40% by mass, more preferably 0.1 to 30% by mass, and still more preferably 1 to 20% by mass based on the total amount of the topical skin composition.

[0070] In addition to the highly viscous hydrogenated polyisobutene, it is preferable to also contain a low-viscosity volatile oil agent (hereinafter also simply referred to as a low-viscosity volatile oil agent) selected from a hydrogenated polyisobutene having a lower viscosity than this (hereinafter also referred to as a low-viscosity hydrogenated polyisobutene) and isododecane. The upper limit of the viscosity of the low-viscosity hydrogenated polyisobutene is not particularly limited, but the viscosity at 20°C is preferably 1000 mPa·s or less, more preferably 500 mPa·s or less, still more preferably 200 mPa·s or less, and still more preferably 100 mPa·s or less.

[0071] The lower limit of the viscosity of the low-viscosity hydrogenated polyisobutene at 20°C is preferably 10 mPa·s or more, more preferably 20 mPa·s or more, still more preferably 50 mPa·s or more, still more preferably 60 mPa·s or more, and still more preferably 70 mPa·s or more.

[0072] By containing the low-viscosity hydrogenated polyisobutene and / or isododecane within the above-described viscosity range in combination with the highly viscous hydrogenated polyisobutene, separation can be prevented, and a topical skin composition excellent in stability over time can be provided.

[0073] The content of the low-viscosity volatile oil agent selected from the low-viscosity hydrogenated polyisobutene and isododecane is preferably 1 to 50% by mass, more preferably 3 to 40% by mass, and still more preferably 5 to 35% by mass based on the total amount of the topical skin composition.

[0074] The content mass ratio of the highly viscous hydrogenated polyisobutene to the low viscous volatile oil agent is preferably 10:1 to 1:20, more preferably 5:1 to 1:10, and still more preferably 2:1 to 1:5.

[0075] (Ethylene / propylene) copolymer and the content mass ratio of the total amount of the highly viscous polyisobutene and the low viscous volatile oil agent is preferably 10:1 to 1:80, more preferably 5:1 to 1:4, and still more preferably 1:1 to 1:20.

[0076] The content mass ratio of the ester compound to the total amount of the highly viscous polyisobutene and the low viscous volatile oil agent is preferably 10:1 to 1:40, more preferably 5:1 to 1:30, and still more preferably 1:1 to 1:20. By setting the above content ratio, a skin external composition excellent in long-lasting effect and excellent in usability such as good elongation can be obtained.

[0077] The content mass ratio of isostearyl glyceryl to the total amount of the highly viscous polyisobutene and the low viscous volatile oil agent is preferably 10:1 to 1:40, more preferably 5:1 to 1:30, and still more preferably 1:1 to 1:20. By setting the above content ratio, a skin external composition excellent in long-lasting effect and excellent in usability such as good elongation can be obtained.

[0078] The skin external composition of the present invention is particularly preferably in an embodiment containing a coloring material. The content of the coloring material in the present invention is preferably 0.1 to 15% by mass based on the total amount of the skin external composition.

[0079] As the coloring material to be contained in the present invention, there is no particular limitation as long as it is a coloring material commonly used in cosmetics, and it may be in powder form or lake form, and may be any of inorganic pigments, organic pigments, and pearl pigments. Although not particularly limited, white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, and barium sulfate, colored inorganic pigments such as iron oxide, carbon black, titanium·titanium oxide sintered product, chromium oxide, chromium hydroxide, ultramarine blue, ultramarine, lithium cobalt titanate, and manganese violet, white extender powders such as talc, muscovite, phlogopite, biotite, synthetic mica, sericite, synthetic sericite, silicon dioxide, aluminum oxide, magnesium oxide, zirconium oxide, antimony oxide, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, barium sulfate, hydrotalcite, hydroxyapatite, and boron nitride, titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, iron oxide mica titanium, ultramarine-treated mica titanium, carmine-treated mica titanium, titanium oxide-coated synthetic phlogopite, titanium oxide-coated glass powder, titanium oxide·iron oxide-coated glass powder, bismuth oxychloride, fish scale foil, polyethylene terephthalate·aluminum·epoxy laminated powder, polyethylene terephthalate·polyolefin laminated film powder, polyethylene terephthalate·polymethyl methacrylate laminated film powder, etc. of shiny powders, organic pigment powders such as Red No. 201, Red No. 202, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, etc., dyes such as Red No. 223, Red No. 218, Orange No. 201, etc., organic pigment powders such as zirconium, barium, or aluminum lake of Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green No. 3, Blue No. 1, etc., composite powders obtained by coating organic or inorganic pigments on powders commonly used in cosmetics, metal powders such as aluminum powder, gold powder, and silver powder, composite powders such as fine particle titanium oxide-coated mica titanium, fine particle zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium oxide-containing silicon dioxide, zinc oxide-containing silicon dioxide, etc. These can be used alone or in combination of two or more kinds, or in a composite form.Alternatively, those surface-treated by a known method using a fluorine compound, a silicone compound, a metallic soap, a surfactant, lecithin, an amino acid, an oil agent, a hydrocarbon, etc. may also be used.

[0080] The topical composition for skin of the present invention can also contain optional components that are commonly used, as long as the effects of the present invention are not impaired. Such optional components include, for example, higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, myristyl alcohol, cetostearyl alcohol; oils such as synthetic ester oils such as cetyl isooctanoate, isopropyl myristate, hexadecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, ethylene glycol di-2-ethylhexanoate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate; fatty acid soaps (sodium laurate, sodium palmitate, etc., anionic surfactants such as potassium lauryl sulfate, alkyl sulfate triethanolamine ether; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy 2 sodium salt, etc.), betaine-based surfactants (alkyl betaine, amide betaine, sulfobetaine, etc., amphoteric surfactants such as acylmethyl taurine;Sorbitan fatty acid esters (such as sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (such as glycerin monostearate, etc.), propylene glycol fatty acid esters (such as propylene glycol monostearate, etc.), hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (such as POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbitol fatty acid esters (such as POE-sorbitol monolaurate, etc.), POE glycerin fatty acid esters (such as POE-glycerin monoisostearate, etc.), POE fatty acid esters (such as polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (such as POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (such as POE nonyl phenyl ether, etc.), Pluronic (registered trademark) types, POE·POP alkyl ethers (such as POE·POP2-decyltetradecyl ether, etc.), Tetronic types, POE castor oil·hydrogenated castor oil derivatives (such as POE castor oil, POE hydrogenated castor oil, etc.), sucrose fatty acid esters, nonionic surfactants such as alkyl glucosides; polyhydric alcohols such as polyethylene glycol, glycerin, erythritol, sorbitol, xylitol, maltitol, propylene glycol, 2,4-hexanediol, etc.; moisturizing components such as sodium pyrrolidone carboxylate, lactic acid, sodium lactate, etc.; para-aminobenzoic acid-based ultraviolet absorbers; anthranilic acid-based ultraviolet absorbers; salicylic acid-based ultraviolet absorbers; cinnamic acid-based ultraviolet absorbers; benzophenone-based ultraviolet absorbers; sugar-based ultraviolet absorbers; ultraviolet absorbers such as 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 4-methoxy-4'-t-butyldibenzoylmethane, etc.; lower alcohols such as ethanol, isopropanol, etc. Antibacterial agents such as phenoxyethanol; arginine, glutamic acid, water-soluble vitamins, etc.; plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, rose, etc. can be preferably exemplified.;

[0081] In the topical skin composition of the present invention, the blending amount of the polysaccharide fatty acid ester as a gelling agent is preferably 10% by mass or less, more preferably 5% by mass or less, and still more preferably not blended, based on the total amount of the topical skin composition. Thereby, it is preferable to minimize the blending of polar oil agents other than the above ester compounds. That is, the blending amount of polar oil agents other than the above ester compounds is preferably 50% by mass or less, more preferably 40% by mass or less, and still more preferably 30% by mass or less, based on the total amount of the topical skin composition. Examples of such polar oils include glyceryl tri(2-ethylhexanoate), diisostearyl malate, glyceryl diisostearate, diglyceryl triisostearate, glyceryl tri(caprylic / capric)ate, neopentyl glycol dicaprate, pentaerythrityl tetra(2-ethylhexanoate), diethylhexyl sebacate, octyldodecanol, trimethylolpropane tri(2-ethylhexanoate), oxy stearyl oxy stearate, pentaerythrityl tetra(ethylhexanoate / benzoate), pentaerythrityl tetraoctanoate, castor oil, diisopropyl sebacate, pentaerythrityl tetraoctanoate, trimethylolpropane triisostearate, di(isostearyl / phytosteryl) dimer dilinoleate, dimer dilinoleyl diisostearate, dimer dilinoleyl dimer dilinoleate, (polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer, cetyl ethylhexanoate, and the like. By setting the polar oil agent to the above blending amount, the topical skin composition of the present invention can exhibit an excellent lasting effect.

[0082] Examples of the polysaccharide fatty acid ester of the gelling agent that is preferably excluded from the present invention include dextrin palmitate, (palmitic acid / ethylhexanoic acid) dextrin, dextrin myristate, and inulin stearate.

[0083] The topical skin composition of the present invention preferably has a form in which the specific volatile silicone-based oil agent described below is not blended. From the viewpoint of enhancing the stability over time of the topical skin composition, a form not containing cyclopentasiloxane is preferred. From the viewpoint of enhancing the anti-secondary adhesion effect of the topical skin composition, a form not containing triethylhexanoin is preferred. When blending the above-mentioned volatile silicone-based oil, it is preferably 20% by mass or less, more preferably 10% by mass or less, and still more preferably 5% by mass or less based on the total amount of the topical skin composition. By setting the content of the volatile silicone-based oil within the above range, the stability over time of the topical skin composition of the present invention can be enhanced.

[0084] The topical skin composition of the present invention can be produced by stirring and mixing an (ethylene / propylene) copolymer, an ester compound of a polyhydroxy fatty acid and a polyhydric alcohol and / or isostearyl glyceryl with an arbitrary oil, coloring material, powder, etc. That is, it can be obtained by adding the ester compound and / or isostearyl glyceryl, an arbitrary oil, coloring material, and powder to a mixture of an (ethylene / propylene) copolymer mixed with an arbitrary solvent, and stirring and mixing until the components are uniformly dispersed.

[0085] The topical skin composition of the present invention is preferably applied to lip cosmetics. Examples of lip cosmetics include lip gloss, lipstick (including both liquid and solid forms), and lip cream. The lip cosmetic of the present invention has no drying feeling after application, and further has an excellent long-lasting effect and stability over time of the formulation.

Example

[0086] <Test Example 1> Evaluation of Liquid-Type Lipstick The oil, coloring material, and powder shown in Table 1 below were mixed and stirred and mixed until uniformly dispersed to prepare liquid-type lipsticks of Examples 1 to 5 and Comparative Examples 1 to 4. In the examples and comparative examples, polyglyceryl-5 polyricinoleate or dipentaerythrityl tripolyhydroxystearate was used as the ester compound.

[0087]

Table 1

[0088] Regarding the liquid-type lipsticks of Examples 1 to 5 and Comparative Examples 1 to 4 prepared in this manner, the long-lasting effect of the formulation, the lack of dry feeling after application (dry resistance), and the stability of the formulation over time were evaluated according to the following criteria. The results are shown in Table 1.

[0089] (Long-lasting effect) The prepared lipstick was applied to the arm, and the coated surface was measured using a colorimeter (Spectrophotometer CM-600d manufactured by Konica Minolta Inc.) (1). After spraying an appropriate amount of pure water on the coated surface of (1), a uniform constant load was applied to the coated surface and tissue-off was performed (2). After measuring the color of the coated surface of (2), olive oil was applied and tissue-off was performed in the same procedure as (2), and the coated surface was measured again (3). From the data of (1) to (3), the color difference ΔE was calculated, and the scores of relative evaluations visually made by multiple experienced evaluators were represented by ◎ to ×. ◎··· Color residue is clearly visible visually, and ΔE is 4.0 or less. 〇··· Slight color fading is felt visually, and ΔE is 5.0 to 7.0. △··· Considerable color fading is felt visually, and ΔE is 8.0 or more. ×··· Color residue cannot be confirmed visually, and there is no need to take ΔE. (Dry resistance) The prepared lipstick was applied to the lips, and the dry feeling after 2 hours was evaluated by multiple experienced evaluators. To compare with market products that feel dry, market products were applied to half of the lips, and the prepared lipstick was applied to the other half. ◎··· No dry feeling is felt at all, there is a sense of protection for the lips, and the applied lipstick remains well. The appearance of the lips also does not feel dry. 〇··· No dry feeling is felt, there is a sense of protection for the lips, but the applied lipstick has become thinner overall. The appearance of the lips also does not feel dry. △···It is difficult to feel dryness. The applied lipstick leaves a film only on part of the lips, giving the impression that the lipstick is applied, but no sense of protection for the lips is felt. The appearance of the lips shows a slight sense of dryness. ×···Feels dry, has no sense of protection for the lips, and gives a feeling as if the skin on the lip surface is cracking. The applied lipstick has disappeared. Also, the appearance shows a sense of dryness. (Stability of the formulation over time) The prepared liquid-type lipstick was observed by a plurality of experienced evaluators, and the stability of the formulation over time was evaluated according to the following criteria. ◎···No separation of the formulation is observed even over time. 〇···Slight separation of the formulation is observed as time passes. △···Separation of the formulation is observed as time passes. ×···Separation is always observed immediately after preparation.

[0090] As shown in Examples 1 to 5 of Table 1, it was found that by using a combination of an (ethylene / propylene) copolymer and an ester compound, excellent long-lasting effects, dryness resistance, and stability of the formulation over time can be achieved.

[0091] On the other hand, Comparative Example 1, which did not contain either the (ethylene / propylene) copolymer or the ester compound, but instead contained a relatively large amount of dextrin palmitate (a gelling agent composed of a polysaccharide fatty acid ester) and a polar oil agent, was excellent in the long-lasting effect but inferior in dryness resistance and stability of the formulation over time.

[0092] Comparative Example 2 is a lipstick containing dextrin palmitate instead of the (ethylene / propylene) copolymer of Example 1. When comparing Example 1 and Comparative Example 2, Comparative Example 2 was inferior to Example 1 in terms of the long-lasting effect and stability of the formulation over time. Comparative Example 4, which further added a phenol-modified silicone to Comparative Example 2, showed even worse results in terms of dryness resistance and stability of the formulation.

[0093] Comparative Example 3 is a lipstick containing an (ethylene / propylene) copolymer and no ester compound. Comparing Examples 1 to 5 with Comparative Example 3, it was revealed that by simultaneously blending an (ethylene / propylene) copolymer and an ester compound, a more excellent long-lasting effect, drying resistance, and formulation stability can be exhibited.

[0094] <Test Example 2> Evaluation of the secondary adhesion resistance effect of liquid-type lipstick Regarding the liquid-type lipstick having a long-lasting effect, the silicone oil agent shown in Table 2 below was further added, and the secondary adhesion resistance effect was evaluated. That is, according to the composition shown in Table 2 below, Examples 6 to 10 were prepared in the same procedure as in Test Example 1. Regarding the obtained liquid-type lipstick, the secondary adhesion resistance effect was evaluated according to the following evaluation criteria.

[0095] (Secondary adhesion resistance effect) Using a doctor plate (2ML), the prepared lipstick was applied to a bio-plate. After leaving it to stand at room temperature for one minute, an acrylic white board of about 500 g was placed on the applied surface of the bio-plate, and the degree of color transfer of the lipstick was visually evaluated. 1... Color transfer is seen on the entire surface of the acrylic white board. 2... Color transfer is seen on a part of the acrylic white board. 3... No color transfer is seen on the acrylic white board, or only a very slight color transfer is seen.

[0096]

Table 2

[0097] As shown in Table 2, Examples 6 to 10 containing diphenyldimethylsilicone or trimethylsiloxysiloxyphenyldimethylsilicone showed an excellent secondary adhesion resistance effect. In particular, Examples 3 and 4 in which the content of diphenyldimethylsilicone or trimethylsiloxysiloxyphenyldimethylsilicone is 30% by mass or more showed a particularly excellent secondary adhesion resistance effect. On the other hand, it was revealed that Example 12 containing 5% by mass of diphenyldimethylsilicone or trimethylsiloxyphenyldimethylsilicone and Example 13 not containing diphenyldimethylsilicone were inferior in the anti-redeposition effect.

[0098] Also, it was revealed that even in the form containing diphenyldimethylsilicone or trimethylsiloxyphenyldimethylsilicone, when a large amount of triethylhexanoin was contained, it was inferior in the anti-redeposition effect compared to Example 11. Therefore, it was found that it is preferable from the viewpoint of the anti-redeposition effect to contain diphenyldimethylsilicone or trimethylsiloxyphenyldimethylsilicone and to contain as little triethylhexanoin as possible.

Industrial Applicability

[0099] The skin-external composition of the present invention can be applied to lip cosmetics.

Claims

1. (Ethylene / propylene) copolymer, As the ester compound, polyglyceryl-5 polyricinoleate and / or dipentaerythrityl tripolyhydroxystearate, A silicone-based oil having a unit structure represented by the following chemical formula (1), a unit structure represented by the following chemical formula (2) and / or a unit structure represented by the following chemical formula (3), The mass ratio of the content of the (ethylene / propylene) copolymer to the content of the ester compound is 10:1 to 1:5, The mass ratio of the content of the (ethylene / propylene) copolymer to the content of the silicone-based oil is 1:2 to 1:25, The content of the silicone-based oil is 15 to 40% by mass, The ester compound is 0.1 to 15% by mass based on the total amount of the topical composition for skin, A topical composition for skin to be applied to the skin or lips. Chemical formula (1) 【Chemical Formula 1】 Chemical formula (2) 【Chemical 2】 Chemical formula (3) 【Chemical Formula 3】

2. The topical composition for skin according to claim 1, wherein the mass ratio of the content of the ester compound to the content of the silicone-based oil is 10:1 to 1:

40.

3. The topical composition for skin according to claim 1 or 2, wherein the silicone-based oil is diphenyldimethylsilicone.

4. The topical composition for skin according to any one of claims 1 to 3, comprising hydrogenated polyisobutene having a viscosity at 20°C of 10,000 mPa·s or more and 2,000,000 mPa·s or less.

5. Hydrogenated polyisobutene having a viscosity at 20°C of 10,000 mPa·s or more and 2,000,000 mPa·s or less, Isododecane and / or hydrogenated polyisobutene having a viscosity at 20°C of 10 mPa·s or more and 1000 mPa·s or less, The topical composition for skin according to any one of claims 1 to 4, characterized by comprising the same.

6. The topical composition for skin according to any one of claims 1 to 5, characterized by containing a coloring material.

7. A liquid lip cosmetic, the topical composition for skin according to any one of claims 1 to 6.

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