JP2019167325A - External composition for skin - Google Patents

Abstract

To provide a cosmetic product that contains an oil solution of a composition having a gelation effect and has excellent makeup durability.SOLUTION: An external composition for skin contains hydrogenated polyisobutene and fatty acid polyglycerol, wherein the fatty acid polyglycerol is ester of fatty acid having 12 or more carbon atoms and polyglycerol with a degree of polymerization 5 or more.SELECTED DRAWING: None

Description

  The present invention relates to an external composition for skin containing an oil.

There are two types of lipstick makeup: a long lasting effect that leaves color and shine on the lips for a long time, and a secondary adhesion-less effect that prevents lipstick from sticking to coffee cups and straws. There are two elements (Non-Patent Document 1). Conventionally, in the field of lipsticks, research has been carried out to improve makeup feeling from these two viewpoints.
In particular, in order to improve the secondary adhesion-less effect, lip cosmetics have been proposed that have the property of separating the silicone oil into the upper layer and the ester oil into the lower layer after application to the skin.

Lip cosmetics having the property of causing phase separation after application to the skin are disclosed in Patent Documents 1 to 4, for example.
Patent Document 1 describes a lip cosmetic containing a specific amount of glyceryl monoisostearate, methylphenyl silicone, water and / or glycerin and wax.
Patent Document 2 describes a lip cosmetic containing specific amounts of hydrogenated polyisobutene, methylphenyl silicone, a lipophilic surfactant and a wax.
Patent Document 3 describes a cosmetic for lips containing a specific amount of a block-type alkylene oxide derivative, dimethyldiphenylpolysiloxane, diglyceryl diisostearate and / or diglyceryl triisostearate.

Patent Document 4 discloses polyhydric alcohol-modified silicone, room temperature liquid ester oil, colorant, oil having a refractive index of 1.47 or more at 25 ° C., and triglyceryl solid at room temperature at a melting point of 35 to 45 ° C. Oily cosmetics characterized by containing are disclosed.
And, in Patent Document 4, when the oily cosmetic is applied to the skin and lips, the polyhydric alcohol-modified silicone and the oil agent are phase-separated by the moisture of the skin and moisture in the air to give the gloss to the makeup film, It is described that the polyhydric alcohol-modified silicone is increased in viscosity by moisture and the decorative film is strengthened, and the makeup sustainability is improved (paragraph 0006).

  Patent Document 5 discloses an external composition for skin containing polyglyceryl isostearate and a silicone-based oil agent, which are excellent in hydration film-forming ability and have good makeup.

  While these cosmetics have the advantageous effect of causing phase separation after application to the skin, they are difficult to provide as a gel-like stable composition because of the combination of special oils. . The technique described in Patent Document 6 solves this problem by adding a gelling agent to the composition.

WO2010 / 113156 pamphlet JP 2011-140481 A JP 2011-42610 A JP 2014-181218 A JP 2017-114786 A WO2014 / 066943 pamphlet

Japan Cosmetic Technology Society (2003). “Cosmetics Dictionary”, P137-138, Maruzen Co., Ltd.

The problem to be solved by the present invention is to provide a cosmetic material that contains an oil agent having a gelling effect and is excellent in makeup.
Another object of the present invention is to provide a technique for improving the secondary adhesion-less effect of an oily solid cosmetic containing wax.

The present invention for solving the above-mentioned problems includes a hydrogenated polyisobutene and a fatty acid polyglycerin, wherein the fatty acid polyglycerin is an ester of a fatty acid having 12 or more carbon atoms and a polyglycerol having a polymerization degree of 5 or more. It is a composition.
The external composition for skin of the present invention is excellent in makeup.

  In the preferable form of this invention, content of water is 1 mass% or less. The external composition for skin of the present invention having a water content in the above range is excellent in ease of handling.

  In the preferable form of this invention, a silicone type oil agent is included. By including a silicone-based oil agent, it is possible to obtain an even better makeup-enhancing effect.

  In a preferred embodiment of the present invention, the silicone oil agent has at least a unit structure represented by the following chemical formula (1) as a unit structure.

Chemical formula (1)

  The composition for external use of the skin of the present invention containing the silicone oil is excellent in the long lasting effect and the moisturizing effect.

  In a preferred embodiment of the present invention, the silicone oil agent has a unit structure represented by the following chemical formula (2) and / or a unit structure represented by the following chemical formula (3).

Chemical formula (2)

Chemical formula (3)

  The composition for external use of the skin of the present invention containing the silicone-based oil is excellent in the long lasting effect and the moisturizing effect.

In a preferred embodiment of the present invention, the silicone oil is diphenyl dimethicone.
The external composition for skin according to the present invention containing diphenyldimethicone is excellent in a long lasting effect and a moisturizing effect.

In the preferable form of this invention, it has a coloring material.
Since the hydrogenated polyisobutene and fatty acid polyglycerin contained in the composition for external use of the present invention can also carry a coloring material, color fading and color transfer are unlikely to occur.

Preferred forms of the invention include vegetable and / or animal waxes and synthetic waxes.
The external composition for skin according to the present invention containing these waxes is particularly excellent in the effect of preventing secondary adhesion.

In a preferred embodiment of the present invention, the hydrogenated polyisobutene and the fatty acid polyglycerin form a gel when mixed at a mass ratio of 1: 1.
The external composition for skin of this form is excellent in the effect of preventing secondary adhesion.

In a preferred form of the invention, a vegetable wax is included.
The composition for external use of the skin of the present invention containing a vegetable wax is excellent in the effect of preventing secondary adhesion, good touch and moldability.

In a preferred embodiment of the present invention, the vegetable wax is one or more selected from the group consisting of carnauba wax, candelilla wax and beeswax.
The external composition for skin of the present invention in a form containing these vegetable waxes is particularly excellent in the effect of preventing secondary adhesion.

In a preferred embodiment of the present invention, the synthetic wax is one or more selected from the group consisting of polyethylene wax, polypropylene wax and polyethylene / polypropylene copolymer wax.
The external composition for skin according to the present invention containing these synthetic waxes is particularly excellent in moldability.

  The present invention can provide an external composition for skin having an excellent makeup. Moreover, in the preferable form of this invention, the composition for external skins excellent in the secondary adhesion-less effect can be provided.

  The composition for external use of the skin of the present invention contains hydrogenated polyisobutene, fatty acid polyglycerin which is an ester of a fatty acid having 12 or more carbon atoms and a degree of polymerization of 5 or more (hereinafter also referred to as a specific fatty acid polyglycerin) as essential components. . Since these two kinds of components are gelled when mixed, the composition for external use of the skin of the present invention exhibits excellent adhesion to the skin and is excellent in makeup.

In the present invention, any degree of polymerization of hydrogenated polyisobutene can be used.
In the present invention, the viscosity at 20 ° C. is preferably 10000 mpa · s or more, more preferably 50000 mpa · s or more, further preferably 100000 mpa · s or more, further preferably 120,000 mpa · s or more, and further preferably 130,000 mpa · s or more. It is preferable to use high-viscosity hydrogenated polyisobutene (hereinafter also referred to as high-viscosity hydrogenated polyisobutene).

  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, still more preferably 1400000 mpa · s or less, more preferably 1200,000 mpa · s or less. is there.

  By using the highly viscous hydrogenated polyisobutene having the above-mentioned viscosity range, it is possible to form a gel exhibiting good adhesion when combined with a specific fatty acid polyglycerin, and to provide an excellent composition for external use for makeup. Can be provided.

  The content of the highly viscous hydrogenated polyisobutene is preferably 0.01 to 30% by mass, more preferably 0.1 to 20% by mass, further preferably 1 to 15% by mass, further preferably 1 to 10% by mass, Preferably it is 1-5 mass%.

Further, in addition to the highly viscous hydrogenated polyisobutene, it is preferable to contain a hydrogenated polyisobutene having a lower viscosity (hereinafter also referred to as a low viscosity hydrogenated polyisobutene).
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, further preferably 200 mpa · s or less, more preferably 100 mpa · s. It is as follows.

  The lower limit of the viscosity of the low-viscosity hydrogenated polyisobutene is preferably 10 mpa · s or more, more preferably 20 mpa · s or more, more preferably 50 mpa · s or more, further preferably 60 mpa · s or more, and further preferably 70 mpa · s or more at 20 ° C. -It is more than s.

  Separation can be prevented by containing the low-viscosity hydrogenated polyisobutene in the above-described viscosity range in combination with the high-viscosity hydrogenated polyisobutene, and a composition for external use on the skin excellent in stability and moldability can be provided.

  The viscosity is a numerical value obtained by a conventional method (for example, measurement using a B-type viscometer (DIGITAL VISMETRON VDA: manufactured by Shibaura System Co., Ltd.)) at 20 ° C. and 1 atm.

  The content of the low-viscosity hydrogenated polyisobutene is more preferably 1 to 50% by mass, further preferably 5 to 40% by mass, further preferably 10 to 30% by mass, and further preferably 15 to 25% by mass.

  The mass ratio of the highly viscous hydrogenated polyisobutene and the low viscosity hydrogenated polyisobutene is preferably 1: 100 to 10: 1, more preferably 1:50 to 1: 1, still more preferably 1:20 to 1: 5, Preferably it is 1: 15-1: 7.

  The fatty acid constituting the specific fatty acid polyglycerin may have 12 or more carbon atoms, and may be unsaturated or saturated. The upper limit of the carbon number of the fatty acid constituting the specific fatty acid polyglycerin is preferably 30 or less, more preferably 25 or less, and still more preferably 20 or less.

  The degree of polymerization of the polyglycerin constituting the specific fatty acid polyglycerin may be 5 or more, and the upper limit thereof is preferably 40, more preferably 30, still more preferably 20, still more preferably 15, and still more preferably 12.

  The number of fatty acid groups of the specific fatty acid polyglycerin is not particularly limited, but is preferably 10 or less, more preferably 7 or less, still more preferably 5 or less, and even more preferably 3 or less.

  Specific fatty acid polyglycerin includes polyglyceryl triisostearate-10, polyglyceryl stearate-10, polyglyceryl myristate-5, polyglyceryl trimyristate-5, polyglyceryl stearate, polyglyceryl laurate-5, polyglyceryl trilaurate-5 , Polyglyceryl-10 myristate, polyglyceryl-10 oleate, polyglyceryl-10 dioleate, polyglyceryl-10 diisostearate.

  In particular, polyglyceryl triisostearate-10, polyglyceryl-5 laurate, polyglyceryl-5 trimyristate, polyglyceryl-10 oleate, polyglyceryl-5 dioleate, polyglyceryl-5 trioleate, and polyglyceryl-10 trilaurate can be preferably exemplified. Further, polyglyceryl-10 triisostearate and polyglyceryl-5 laurate can be preferably exemplified.

  Content of specific fatty acid polyglycerol becomes like this. Preferably it is 0.1-40 mass%, More preferably, it is 1-30 mass%, More preferably, it is 5-20 mass%, More preferably, it is 7-15 mass%.

  The content ratio by mass of the specific fatty acid polyglycerin and the hydrogenated polyisobutene is preferably 1: 100 to 10: 1, more preferably 1:50 to 1: 1, still more preferably 1:20 to 1: 3, still more preferably. 1:15 to 1: 5.

  Among the hydrogenated polyisobutenes, the mass ratio of the highly viscous hydrogenated polyisobutene and the specific fatty acid polyglycerol is preferably 10: 1 to 1: 100, more preferably 5: 1 to 1:20, and more preferably 1: 1. 1:10, more preferably 1: 2 to 1: 8.

  When the low-viscosity hydrogenated polyisobutene is contained, the mass ratio of the specific fatty acid polyglycerol and the low-viscosity hydrogenated polyisobutene is preferably 5: 1 to 1:50, more preferably 2: 1 to 1:10, Preferably it is 1: 1 to 1: 5.

It is preferable that the external composition for skin of this invention contains a silicone type oil agent.
The external composition for skin of the present invention containing a silicone-based oil agent is separated into a layer that adheres to the skin containing hydrogenated polyisobutene and a specific fatty acid polyglycerin after application to the skin, and a surface layer that contains a silicone-based oil agent. Therefore, it is possible to provide a composition for external use with good makeup that has a gloss on the coating surface over time.
Moreover, if it is set as the form containing a color material in addition to a silicone type oil agent, since a color material will be taken in into the layer which adhere | attaches on skin, a color fading and color transfer can be prevented effectively.

The color material may be any color material that is usually used in lip cosmetics. It may be an inorganic pigment, an organic pigment, or a pearl agent.
The content of the color material is preferably 1 to 15% by mass.

  As the silicone oil, any of chain silicones such as dimethylpolysiloxane and methylphenylpolysiloxane and cyclic silicones such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane can be used. In particular, it is preferable to use a silicone-based oil having at least a unit structure represented by the following chemical formula (1) as a unit structure.

Chemical formula (1)

  Moreover, in more preferable embodiment of this invention, it is preferable to include the silicone type oil agent which has a unit structure represented by following Chemical formula (2) and / or a unit structure represented by following Chemical formula (3).

Chemical formula (2)

Chemical formula (3)

  Preferred examples of such silicone oils include diphenylmethylsiloxyphenyl methicone / phenylsilsesquioxane crosspolymer, diphenyl dimethicone, trimethylsiloxyphenyl dimethicone, dimethicone and the like, and particularly preferred is diphenyl dimethicone. it can.

Examples of silicone oils include oils having an IOB value of 0.1 or less that are liquid at 25 ° C., oil agents having an average solubility parameter at 25 ° C. of less than 7.0 (J / cm ³ ) 1/2, and carboxyl An oil agent having no polar group such as a group, a phosphate group, or an amino group is preferred.

The viscosity of the silicone-based oil is preferably 60000 mpa · s or less, more preferably 2000 mpa · s or less at 20 ° C.
The viscosity is a numerical value obtained by a conventional method (for example, measurement using a B-type viscometer (DIGITAL VISMETRON VDA: manufactured by Shibaura System Co., Ltd.)) at 25 ° C. and 1 atm.

  Such silicone oils include PH-1560 (diphenylmethylsiloxyphenylmethicone / phenylsilsesquioxane crosspolymer, Toray Dow Corning), silicone KF54 (diphenyldimethicone, Shin-Etsu Silicone), silicone KF54HV (diphenyldimethicone). , Shin-Etsu Silicone), PDM1000 (trimethylsiloxyphenyl dimethicone, Asahi Kasei Wacker Silicone), silicone KF96-10 (dimethicone, Shin-Etsu Silicone) may be used.

In the present invention, the content of the silicone oil is preferably 10 to 85% by mass, more preferably 15 to 80% by mass, further preferably 20 to 75% by mass, further preferably 25 to 70% by mass, and further preferably 30. It is -65 mass%.
By setting the content of the silicone-based oil in the above range, the makeup of the external composition for skin can be further improved.

In the form containing the silicone oil, the mass ratio of the silicone oil to the hydrogenated polyisobutene and the specific fatty acid polyglycerol is preferably 100: 1 to 1: 100, more preferably 10: 1 to 1:10, Preferably it is 5: 1 to 1: 5, more preferably 3: 1 to 1: 2, more preferably 2: 1 to 1: 1.

By setting the amount ratio of the silicone-based oil agent and polyglyceryl isostearate within the above range, the makeup of the external composition for skin can be further improved.

  In the present invention, it is preferable to contain a wax. Examples of the wax include hydrocarbon waxes such as ozokerite, ceresin, paraffin, petrolatum, Fischer-Tropsch wax, and microcrystalline wax; plants such as carnauba wax, candelilla wax, rice wax, sunflower wax, hydrogenated jojoba oil, and moscow Animal waxes such as beeswax and whale wax; Synthetic waxes such as silicone wax, fluorine wax, polyethylene wax and synthetic beeswax; fatty acids, higher alcohols and derivatives thereof.

  The content of the wax is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, and further preferably 5 to 15% by mass.

  In particular, it is preferable to include a combination of a wax derived from a living organism such as a vegetable wax or an animal wax and a synthetic wax. As a result, a composition for external use having a particularly excellent secondary adhesion-less effect can be provided.

As the biological wax combined with the synthetic wax, a vegetable wax can be preferably exemplified, and in particular, candelilla wax, carnauba wax and beeswax can be more suitably exemplified.
These may be used alone or in combination of two or more.

Examples of the synthetic wax combined with the biological wax include polyethylene wax, polypropylene wax, and polyethylene / polypropylene copolymer wax.
These may be used alone or in combination of two or more.

  In this case, the content ratio of the biological wax and the synthetic wax is preferably 1: 100 to 50: 1, more preferably 1:20 to 10: 1, still more preferably 1:10 to 5: 1, and still more preferably. 1: 5 to 1: 1, more preferably 1: 3 to 1: 1.

  In the form containing a wax, it is preferable that the hydrogenated polyisobutene and the specific fatty acid polyglycerin contained in the composition for external use in skin form a combination that forms a gel when mixed at a mass ratio of 1: 1. An external composition for skin containing such a combination of hydrogenated polyisobutene and specific fatty acid polyglycerin is particularly excellent in the effect of preventing secondary adhesion. Here, whether or not to form a gel can be evaluated according to the method described in Test Examples described later.

  The external composition for skin of the present invention can also contain any commonly used optional component 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; cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol Higher alcohols such as octyldodecanol, myristyl alcohol and cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate , Ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerine tri-2-ethylhexanoate Oils such as synthetic ester oils such as trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentane erythritol tetra-2-ethylhexanoate; fatty acid soap (sodium laurate, palmitic acid) Sodium), anionic surfactants such as potassium lauryl sulfate, alkylethanol triethanolamine ether; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants ( 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), acylmethyl taurine, etc. Amphoteric surfactants: sorbitan fatty acid esters (such as sorbitan monostearate and sorbitan sesquioleate), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), and cured castor Oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbite monolaurate, etc.), POE glycerin fatty acid esters ( POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (PO E2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil・ Nonionic surfactants such as hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.), sucrose fatty acid ester, alkyl glucoside; polyethylene glycol, glycerin, erythritol, sorbitol, xylitol, maltitol, propylene glycol, Polyhydric alcohols such as 2,4-hexanediol; moisturizing ingredients such as sodium pyrrolidonecarboxylate, lactic acid, and sodium lactate; paraaminobenzoic acid ultraviolet absorbers; anthranilic acid ultraviolet absorbers; salicyl -Based UV absorbers; cinnamic acid-based UV absorbers; benzophenone-based UV absorbers; sugar-based UV absorbers; 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 4-methoxy-4'- UV absorbers such as t-butyldibenzoylmethane; lower alcohols such as ethanol and isopropanol; antibacterial agents such as phenoxyethanol; arginine, glutamic acid, water-soluble vitamins, etc .; aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, Preferred examples include plant extracts such as rose.

The external composition for skin of the present invention is preferably applied to lip cosmetics. Examples of the lip cosmetic include lip gloss, lipstick (including both liquid and solid), and lip balm. In particular, the composition for external use of the skin of the present invention containing wax is preferably applied to a cosmetic product for solid lips.
The lip cosmetic of the present invention is excellent in a secondary adhesion-less effect, a long lasting effect, and a moisturizing effect.

<Test Example 1> Gelation test (1)
Hydrogenated polyisobutene (20 ° C. viscosity: 133800 mpa · s, 20 ° C. viscosity: 1104000) and various oil agents were mixed at a ratio of 1: 1 to evaluate whether or not a gel was formed. Moreover, about the mixture which formed the gel, this was left still at room temperature for 6 hours, and it was evaluated whether the form of the gel was maintained. The results are shown in Tables 1 and 2. In addition, when it was in the state which does not show fluidity | liquidity when it inclines at 90 degrees in the state with which the mixture was filled in the screw tube, it evaluated that it was a form of the gel.

  As shown in Tables 1 and 2, a fatty acid having 12 or more carbon atoms and a fatty acid polyglycerol which is an ester of polyglycerol having a polymerization degree of 5 or more formed a gel when mixed with hydrogenated polyisobutene.

<Test Example 2> Gelation test (2)
Polyglyceryl triisostearate-10 and the oil agents listed in Table 3 were mixed at a ratio of 1: 1, and this mixture was allowed to stand at room temperature for 6 hours to evaluate whether or not the gel form was maintained. Table 3 shows the results.

  As shown in Table 3, when mixed with polyglyceryl-10 triisostearate, the majority of oils did not form gels, while hydrogenated polyisobutene formed gels.

  As a result of Test Examples 1 and 2, the composition for external use on skin containing a fatty acid having 12 or more carbon atoms, a fatty acid polyglycerin which is an ester of polyglycerin having a polymerization degree of 5 or more, and hydrogenated polyisobutene are 2 It indicates that the component forms a gel and is excellent in adhesion to the skin and exhibits a good makeup.

<Test Example 2> Evaluation of solid cosmetic (1)
An oily solid cosmetic material having the formulation shown in Table 3 was prepared by the following method. First, the component (a) was heated and dissolved at 105 ° C. to 110 ° C., and the component (b) was added thereto and stirred at 100 ° C. to 105 ° C. for dissolution. After confirming the dissolution of component (b), component (c) was added and stirred at 100 ° C to 105 ° C. When stirring was completed uniformly, defoaming was performed at 112 ° C., and this was filled in a container to prepare oily solid cosmetics of Examples 1 to 9 and Comparative Examples 1 to 3.

The prepared oily solid cosmetics were evaluated for secondary adhesion-less effect and feel (good elongation) moldability by the following methods. The results are shown in Table 4.
(Secondary adhesion-less effect)
An appropriate amount of oily solid cosmetic was applied to the inner side of the upper arm, one minute after application, the finger was pressed against the application surface, the pressed finger was further pressed against the white plate, and two-step evaluation was performed using the amount of attached pigment as an index. In the case where a good secondary adhesion-less effect was observed, the evaluation was ○, and otherwise, the evaluation was ×.
(Feel)
An experienced evaluator was allowed to apply an oily solid cosmetic to his / her own skin, and evaluated the easiness of stretching in a two-step evaluation of ○ and ×.
(Moldability)
A prepared evaluator was allowed to observe the prepared oily solid cosmetic, and a rating of x was given when separation was observed, and a rating of ◯ was given when separation was not observed.

As shown in Table 4, it was found that the use of a bio-derived (plant-based) wax and a synthetic wax in combination is preferable from the viewpoint of the secondary adhesion-less effect and the moldability required for the solid cosmetic.
Moreover, when the polyglyceryl-2 triisostearate which does not apply to the conditions of carbon number 12 or more of fatty acid and the polymerization degree 5 or more of polyglycerol was included, it was inferior to a moldability and a secondary adhesion-less effect.

<Test Example 3> Evaluation of solid cosmetic (2)
In place of the polyglyceryl triisostearate included in Example 1 described above, an oily cosmetic containing the fatty acid polyglyceryl shown in Table 5 was prepared in the same manner as in Test Example 2. About the prepared oil-based solid cosmetic, the secondary adhesion-less effect was evaluated. The evaluation method is the same as in Test Example 2 except that the four-step evaluation of 、, ○, Δ, and × is made.

  From the results of Tables 4 and 5, in the case of oily solid cosmetics containing wax, fatty acid polyglycerin which is an ester of fatty acid having a carbon number of 12 or more, polyglycerin having a polymerization degree of 5 or more, and hydrogenated polyisobutene. It has been found that inclusion in combination and inclusion of a combination of biologically derived (vegetable) wax and synthetic wax as waxes are preferable from the viewpoints of moldability and secondary adhesion-less effect.

The present invention can be applied to lipsticks.

Claims (12)

An external composition for skin comprising hydrogenated polyisobutene and fatty acid polyglycerol, wherein the fatty acid polyglycerol is an ester of a fatty acid having 12 or more carbon atoms and a polyglycerol having a polymerization degree of 5 or more. The external composition for skin according to claim 1, wherein the water content is 1% by mass or less. The external composition for skin according to claim 1 or 2, comprising a silicone-based oil. The external composition for skin according to claim 3, wherein the silicone-based oil agent has at least a unit structure represented by the following chemical formula (1) as a unit structure.
Chemical formula (1)
The composition for external use on skin according to claim 4, wherein the silicone-based oil agent has a unit structure represented by the following chemical formula (2) and / or a unit structure represented by the following chemical formula (3).
Chemical formula (2)
Chemical formula (3)
The external composition for skin according to any one of claims 3 to 5, wherein the silicone oil is diphenyldimethicone. It has a coloring material, The composition for external use of a skin as described in any one of Claims 3-6 characterized by the above-mentioned. The external composition for skin according to any one of claims 1 to 7, comprising a vegetable wax and / or an animal wax, and a synthetic wax. The external composition for skin according to claim 8, wherein the hydrogenated polyisobutene and the fatty acid polyglycerin form a gel when mixed at a mass ratio of 1: 1. The composition for external use of the skin according to claim 9, comprising a vegetable wax. The external composition for skin according to claim 10, wherein the vegetable wax is one or more selected from the group consisting of carnauba wax, candelilla wax and beeswax. The skin external application according to any one of claims 9 to 11, wherein the synthetic wax is one or more selected from the group consisting of polyethylene wax, polypropylene wax and polyethylene-polypropylene copolymer wax. Composition.