Multiphase oily solid cosmetic

Abstract

The present invention addresses the problem of providing a polyphase oil-based solid cosmetic that has a transparent phase and has excellent aesthetic properties as a cosmetic.　The present invention provides a polyphase oil-based solid cosmetic that has a transparent first phase and a transparent second phase that are mutually adjacent, wherein the first phase contains a component (A) amino acid–based gelling agent and a first oil agent, and the second phase contains a component (B) dextrin fatty acid ester, a component (C) pigment, and a second oil agent.

Description

Technical Field

[0001] The present invention relates to a multiphase oily solid cosmetic.

Background Art

[0002] Oily solid cosmetics are widely used in lip cosmetics, eye colors, fragrance compositions, etc. Cosmetics are used for the purpose of imparting various color tones and textures to the skin. In particular, makeup cosmetics are required not only for makeup effects such as gloss, transparency, and good coloring, and functionality such as being difficult to reattach, but also for the beauty and functionality of the appearance of the cosmetics themselves, which lead to the enjoyment of makeup. Many cosmetic technologies characterized by the beauty of appearance or the enjoyment of use have been proposed so far. For example, there are technologies for providing a transparent oily solid cosmetic using hydroxystearic acid as a solidifying agent (Patent Document 1), and a technology for providing a rod-shaped preparation for lips that exhibits sufficient transparency with an N-acyl amino acid derivative, a polyamide resin, and a liquid oil component (Patent Document 2). In addition, taking advantage of the characteristics of such transparent oily solid cosmetics, a cosmetic (Patent Document 3) has been proposed in which a second oily solid composition having a high dropping point is scattered in a first oily solid composition having transparency.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, there is room for improvement in the transparency and aesthetic properties of oil-based solid cosmetics. Therefore, the main object of the present invention is to obtain a multiphase oil-based solid cosmetic having a transparent phase and high aesthetic properties as a cosmetic.

Means for Solving the Problems

[0005] As a result of intensive studies, the present inventors have found that the above problems can be solved by using a transparent first phase containing specific components and a transparent second phase containing specific components and a dye, and have completed the present invention.

[0006] That is, the present invention has a transparent first phase and a transparent second phase in contact with each other, the first phase contains component (A) an amino acid-based gelling agent and a first oil, and the second phase contains component (B) dextrin fatty acid ester, component (C) a dye, and a second oil, and provides a multiphase oil-based solid cosmetic. The component (A) may include one or more selected from dibutyl lauroyl glutamide and dibutyl ethylhexanoyl glutamide. The first oil may include one or more selected from diisostearyl malate, tritridecyl trimellitate, and polyglyceryl-2 triisostearate. The second oil may include one or more selected from diisostearyl malate, tritridecyl trimellitate, and polyglyceryl-2 triisostearate. The second phase may contain 0.05 to 0.3% by mass of the component (C). The multiphase oil-based solid cosmetic may be in the form of a two-layer stick with the first phase as the outer layer and the second phase as the inner layer.

Effects of the Invention

[0007] According to the present invention, a multiphase oil-based solid cosmetic having a transparent phase and high aesthetic properties as a cosmetic can be obtained.

Embodiments for Carrying Out the Invention

[0008] The present invention will be described in detail below. In this specification, "~" means a range including the numerical values before and after it. The multiphase oil-based solid cosmetic of the present invention has a transparent first phase and a transparent second phase in contact with each other. The first phase contains component (A) an amino acid-based gelling agent and a first oil agent, and the second phase contains component (B) dextrin fatty acid ester, component (C) a dye, and a second oil agent.

[0009] (First phase) The amino acid-based gelling agent (component (A)) contained in the first phase has an amide bond in the molecule and solidifies the oil agent. Any amino acid-based gelling agent that is usually used in cosmetics can be used without particular limitation as long as it can solidify the oil agent into a transparent state to form an oil-based solid cosmetic. Examples of component (A) include dibutyl lauroyl glutamide, dibutyl ethylhexanoyl glutamide, (bisdialkyl (C14-18) amide (ethylenediamine / hydrogenated dimer dilinoleic acid) copolymer, etc. Component (A) preferably contains one or more selected from dibutyl lauroyl glutamide and dibutyl ethylhexanoyl glutamide, and more preferably contains dibutyl lauroyl glutamide and dibutyl ethylhexanoyl glutamide. Commercially available products of dibutyl lauroyl glutamide include, for example, amino acid-based oil gelling agent GP-1 (manufactured by Ajinomoto Co., Inc.). Commercially available products of dibutyl ethylhexanoyl glutamide include, for example, amino acid-based oil gelling agent EB-21 (manufactured by Ajinomoto Co., Inc.).

[0010] The lower limit of the content of component (A) is preferably 1% by mass (hereinafter simply abbreviated as %) or more, more preferably 3% or more in the first phase. The upper limit of the content of component (A) is preferably 10% or less, more preferably 7% or less in the first phase. Within this range, the first phase can have better transparency and formability to solidify the oil agent (especially formability in a three-dimensional shape such as a stick shape).

[0011] Examples of the first oil agent included in the first phase include, for example, liquid oils of animal, vegetable, synthetic oil, etc. origin; hydrocarbons such as volatile oils; fats and oils; hardened oils; ester oils; fatty acids; higher alcohols; silicone oils; fluorine-based oils; lanolin derivatives; etc. Specifically, for example, hydrocarbons such as liquid paraffin, squalane, polyisobutylene, polybutene; fats and oils such as olive oil, castor oil, mink oil, macadamia nut oil; esters such as jojoba oil, cetyl 2-ethylhexanoate, isostearyl lactate, octyldodecyl lactate, oleyl lactate, stearyl lactate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, pentaerythritol rosinate, neopentyl glycol dioctanoate, cholesterol fatty acid ester, phytosterol fatty acid ester; fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid; silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, trimethylsiloxysilicic acid, highly polymerized methylphenylpolysiloxane, crosslinked methylpolysiloxane, polyoxy-modified organopolysiloxane, crosslinked polyether-modified methylpolysiloxane, methacryl-modified polysiloxane, stearyl-modified methylpolysiloxane, oleyl-modified methylpolysiloxane, behenyl-modified methylpolysiloxane, polyvinylpyrrolidone-modified methylpolysiloxane, highly polymerized dimethylpolysiloxane, polyoxyalkylene·alkylmethylpolysiloxane·methylpolysiloxane copolymer, alkoxy-modified polysiloxane, crosslinked organopolysiloxane, fluorine-modified polysiloxane; fluorine-based oil agents such as perfluorodecane, perfluorooctane, perfluoropolyether; lanolin derivatives such as lanolin, lanolin acetate, isopropyl lanolin fatty acid, lanolin alcohol; etc. One or more of these can be used.In the present invention, as the first oil agent contained in the first phase, one or more selected from diisostearyl malate, tritridecyl trimellitate, and polyglyceryl-2 triisostearate are preferable, and one or more selected from diisostearyl malate and tritridecyl trimellitate are more preferable. The content of the first oil agent in the first phase is preferably 85% or more, more preferably 93% or more, and even more preferably 99% or more. When it is within this range, the transparency and moldability of the first phase can be made more excellent. When the first oil agent contains solid oil and / or paste-like oil, in order to enhance transparency, the total content of the solid oil and the paste-like oil is preferably less than 5%, more preferably less than 1%, and even more preferably 0% in the first phase. That is, in order to enhance transparency, it is particularly preferable that the first oil agent does not contain solid oil and paste-like oil.

[0012] The upper limit value of the hardness of the first phase is preferably 400 or less, more preferably 300 or less, and even more preferably 200 or less. The lower limit value of the hardness of the first phase is preferably 50 or more, more preferably 80 or more, and even more preferably 100 or more.

[0013] The hardness was measured as the resistance value when the melted cosmetic was filled into a jar container, allowed to stand at 25°C for 12 hours to solidify, and then a 2 mm needle was inserted at 6 cm / min using a 3 mmφ adapter with a FUDOH rheometer RTC2002D (manufactured by Rheotech).

[0014] (Second phase) Component (B) dextrin fatty acid ester contained in the second phase has a functional group in which a hydroxy group in the dextrin molecule is ester-bonded to a fatty acid. As long as it is usually used in cosmetics, it is not particularly limited and can be used. Component (B) can solidify the oil agent. Examples of component (B) include dextrin palmitate, dextrin myristate, (palmitic acid·2-ethylhexanoic acid) dextrin, etc. Component (B) preferably contains dextrin palmitate and / or (palmitic acid·2-ethylhexanoic acid) dextrin. Commercially available products of dextrin palmitate include, for example, Leopal KL2 (manufactured by Chiba Flour Milling Co., Ltd.), etc. Commercially available products of (palmitic acid·2-ethylhexanoic acid) dextrin include, for example, Leopal TL2, Leopal TT2 (manufactured by Chiba Flour Milling Co., Ltd.), etc.

[0015] The lower limit of the content of component (B) is preferably 13.5% or more, more preferably 17.5% or more in the second phase. The upper limit of the content of component (B) is preferably 25% or less, more preferably 20% or less in the second phase. Within this range, the multiphase oily solid cosmetic of the present invention can have more excellent formability, stability under high-temperature environments, smooth usability, and transparency.

[0016] Component (C) dye contained in the second phase can be used without particular limitation as long as it is usually used in cosmetics. Component (C) preferably contains a fluoran-based oil-soluble dye. Examples of the fluoran-based oil-soluble dye include Red No. 218 and Red No. 223, etc. Commercially available products of component (C) include, for example, TPP Red No. 218 and TPP Red No. 223 (both manufactured by Kuisekika Co., Ltd.), etc.

[0017] The lower limit of the content of component (C) in the second phase is preferably 0.05% or more, more preferably 0.1% or more. The upper limit of the content of component (C) in the second phase is preferably 0.3% or less, more preferably 0.2% or less. When it is within this range, the multiphase oily solid cosmetic of the present invention has a more excellent coloring cosmetic effect, that is, the coloring of the dye when applied to the skin or lips is more excellent. Further, when it is within the above range, the multiphase oily solid cosmetic of the present invention has more excellent transparency.

[0018] Examples of the second oil agent contained in the second phase include the oil agents exemplified as the first oil agent contained in the first phase. The second oil agent contained in the second phase may be the same as or different from the first oil agent contained in the first phase. The second oil agent contained in the second phase is preferably at least one selected from distearyl malate, tritridecyl trimellitate, and diglyceryl-2 triisostearate, and more preferably at least one selected from distearyl malate and tritridecyl trimellitate. When these oil agents are used, the coloring of component (C) dye in the second phase can be more effectively suppressed. Therefore, these oil agents are preferably used for a multiphase oily solid cosmetic having a colorless and transparent appearance and exhibiting coloring only when applied to the skin or lips.

[0019] The second phase is preferably softer and more adherent than the first phase. That is, the hardness of the second phase is preferably lower than the hardness of the first phase. The upper limit of the hardness of the second phase is preferably 100 or less, more preferably 70 or less, and even more preferably 55 or less. The lower limit of the hardness of the second phase is preferably 10 or more, more preferably 20 or more.

[0020] (Multiphase oily solid cosmetic) The multiphase oily solid cosmetic of the present invention has a first phase and a second phase, and the first phase and the second phase are combined so as to be in contact with each other. The first phase and the second phase are each an oily solid cosmetic. The multiphase oily solid cosmetic of the present invention may have phases other than the first phase and the second phase, or may have only the first phase and the second phase. Examples of the shape of each phase include those in which each phase has a layer structure, those in which each phase is arranged regularly or randomly, and those in which the other phase is dispersed in either phase. Preferably, each phase has a layer structure. Also, the number of the first phase and the second phase is not limited, and each can be one or two or more. The multiphase oily solid cosmetic of the present invention is preferably a two-layer oily solid cosmetic in which one first phase and one second phase form a layer structure.

[0021] Both the first phase and the second phase are transparent, and the multiphase oily solid cosmetic of the present invention combining these is transparent unless it has other opaque phases. The first phase and the second phase may be colored as long as they are transparent. Here, in the present invention, being transparent means that a sample with a thickness of 12.5 mm melt-filled in a glass cell with a length of 12.5 mm × a width of 12.5 mm × a depth of 45 mm is placed on white paper with a black line drawn in a thickness of 1.5 points, and the black line can be clearly seen from above with a thickness of 12.5 mm. When both the first phase and the second phase are colorless and transparent, and the multiphase oily solid cosmetic of the present invention has no other colored and / or opaque phases, the multiphase oily solid cosmetic of the present invention is colorless and transparent. The colorless and transparent multiphase oily solid cosmetic can be a cosmetic having excellent aesthetic properties and high functionality that starts to be colored only when applied to the skin or lips. That is, the cosmetic may be such that the color development of the component (C) dye in the second phase is suppressed, it has a colorless and transparent appearance, and the component (C) dye develops color when attached to the skin or lips.

[0022] The multiphase oily solid cosmetic of the present invention may be formed into a three-dimensional shape. Particularly, when the three-dimensional shape is a stick shape, either the first phase or the second phase can be formed into a cylindrical shape with a hollow inside (outer layer), and the other phase (inner layer) can be accommodated in the hollow to form a two-layer stick shape. In this case, it is preferable to use the first phase as the outer layer and the second phase as the inner layer because of excellent shape retention. Further, the mass ratio (first phase: second phase) of the first phase and the second phase in the multiphase oily solid cosmetic is preferably 2:8 to 8:2, more preferably 3:7 to 7:3, and even more preferably 4:6 to 6:4.

[0023] Here, when the multiphase oily solid cosmetic of the present invention is formed into a two-layer stick shape with the first phase as the outer layer and the second phase as the inner layer, there may be a case where the second phase as the inner layer protrudes under high-temperature conditions due to their differences, resulting in poor stability. For the two-layer stick-shaped multiphase oily solid cosmetic, the hardness of the second phase is preferably 10 or more. When the hardness of the second phase is 10 or more, it can be a cosmetic with excellent shape retention of the stick shape and excellent mold release property from the mold during molding. Further, for the two-layer stick-shaped multiphase oily solid cosmetic, the hardness of the second phase is more preferably 25 or more. When the hardness of the second phase is 25 or more, it is possible to obtain a more stable multiphase oily solid cosmetic in which the inner layer is less likely to protrude even under high-temperature conditions.

[0024] In addition to the components (A) to (C) and the oil agent, each of the first phase and the second phase can contain known components such as powder, surfactant, aqueous component, ultraviolet absorber, humectant, antioxidant, cosmetic ingredient, preservative, pigment, and fragrance within a range that does not impair the effects of the present invention.

[0025] The powder is not particularly limited by its shape such as spherical, plate-like, needle-like, etc.; particle size such as aerosol, fine particle, pigment grade, etc.; particle structure such as porous, non-porous, etc., as long as it is a powder generally used in cosmetics. Examples of the powder include inorganic powders, lustrous powders, organic powders, pigment powders, metal powders, composite powders, etc. Specifically exemplified powders include white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, barium sulfate; colored inorganic pigments such as iron oxide, carbon black, titanium·titanium oxide sintered product, chromium oxide, chromium hydroxide, ultramarine blue, lapis lazuli; white extender powders such as talc, muscovite, phlogopite, biotite, lepidolite, synthetic mica, sericite, synthetic sericite, kaolin, silicon carbide, bentonite, smectite, anhydrous silicic acid, aluminum oxide, magnesium oxide, zirconium oxide, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride; lustrous powders such as titanium dioxide-coated mica, titanium dioxide-coated bismuth oxychloride, iron oxide mica titanium, ultramarine-treated mica titanium, carmine-treated mica titanium, bismuth oxychloride, fish scale foil, polyethylene terephthalate·aluminum·epoxy laminate powder, polyethylene terephthalate·polyolefin laminate film powder, polyethylene terephthalate·polymethyl methacrylate laminate film powder; synthetic resins such as polyamide-based resins, polyethylene-based resins, polyacrylic-based resins, polyester-based resins, fluorine-based resins, cellulose-based resins, polystyrene-based resins, styrene-acrylic copolymer resins; organic high molecular resin powders such as polypropylene-based resins, urethane resins; organic low molecular powders such as zinc stearate, N-acyl lysine; natural organic powders such as silk powder, cellulose powder; 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;Organic pigment powders such as zirconium, barium or aluminum lakes, etc., including Black No. 401, Brown No. 201, Purple No. 401, Cyan No. 1, Cyan No. 2, Cyan No. 203, Cyan No. 205, Green No. 3, Green No. 201, Green No. 204, Green No. 205, Green No. 401, Green No. 402, Yellow No. 4, Yellow No. 5, Yellow No. 202(1), Yellow No. 202(2), Yellow No. 203, Yellow No. 402, Yellow No. 403(1), Yellow No. 406, Yellow No. 407, Orange No. 205, Orange No. 402, Red No. 2, Red No. 3, Red No. 102, Red No. 104(1), Red No. 105(1), Red No. 106, Red No. 227, Red No. 230(1), Red No. 231, Red No. 401, Red No. 502, Red No. 503, Red No. 504, Red No. 506, etc.; metal powders such as aluminum powder, gold powder, silver powder, etc.; 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. One or more of these powders may be used as the above-mentioned powder. The above-mentioned powder may be surface-treated by a known method using a fluorine-based compound, a silicone-based compound, a metal soap, lecithin, hydrogenated lecithin, collagen, a hydrocarbon, a higher fatty acid, a higher alcohol, an ester, a wax, a rosin, a surfactant, etc. as required. The above-mentioned powder may be compounded. In order to enhance the transparency of the cosmetic, it is preferable that neither the first phase nor the second phase contains or substantially contains the above-mentioned powder. Substantially not containing means that the content of the powder in the first phase and / or the second phase is preferably 1% or less, more preferably 0.5% or less, and even more preferably 0.1% or less. The content of the powder in the first phase and the content of the powder in the second phase may be the same or different.;

[0026] The surfactant is not particularly limited as long as it is a surfactant generally used in cosmetics. As the surfactant, a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, or the like can be used. Examples of the surfactant include glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, polyoxyethylene hydrogenated castor oil, polyoxyalkylene alkyl copolymerized organopolysiloxane, polyether-modified organopolysiloxane, lecithin, and the like.

[0027] As the aqueous component, any component soluble in water may be used. Examples of the aqueous component include, in addition to water, alcohols such as ethyl alcohol; glycols such as propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, dipropylene glycol, and polyethylene glycol; glycerols such as glycerin, diglycerin, and polyglycerin; plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose; and the like.

[0028] Examples of the ultraviolet absorber include ultraviolet absorbers such as benzophenone-based, PABA-based, cinnamic acid-based, and salicylic acid-based ultraviolet absorbers, and 4-tert-butyl-4'-methoxydibenzoylmethane, oxybenzone, and the like. Examples of the humectant include proteins, mucopolysaccharides, collagen, elastin, keratin, and the like. Examples of the antioxidant include α-tocopherol, ascorbic acid, and the like. Examples of the cosmetic ingredient include vitamins, anti-inflammatory agents, crude drugs, and the like. Examples of the preservative include paraoxybenzoic acid esters, phenoxyethanol, and the like.

[0029] The multiphase oily solid cosmetic of the present invention is mainly composed of an oil agent. The multiphase oily solid cosmetic is, for example, lipstick, lip cream, blusher, eye color, concealer, base, hair coloring agent, etc., and preferably lipstick.

[0030] The method for producing the multiphase oily solid cosmetic of the present invention is not particularly limited. For example, the multiphase oily solid cosmetic can be obtained as follows. Component (A), the first oil agent and other components as required are heated to a temperature equal to or higher than the melting point of component (A) and kneaded to prepare the first phase. Component (B), component (C), the second oil agent and other components as required are heated to a temperature equal to or higher than the melting point of component (B) and kneaded to prepare the second phase. The first phase is filled into a container provided with a partition, cooled to room temperature, and then the partition is removed and the second phase is filled into the void portion and cooled and solidified. Thereby, a multiphase oily solid cosmetic is obtained. In another aspect, component (A), the first oil agent and other components as required are heated to a temperature equal to or higher than the melting point of component (A) and kneaded to prepare the first phase. Component (B), component (C), the second oil agent and other components as required are heated to a temperature equal to or higher than the melting point of component (B) and kneaded to prepare the second phase. A mold for the inner layer (hereinafter referred to as the inner layer mold) is fixed to a stick type, the first phase is filled into the outer layer side (between the stick type and the inner layer mold) in the stick type, cooled and solidified, and then the inner layer mold is removed, and the second phase is filled into the void portion and cooled and solidified. Thereby, a two-layer stick-shaped multiphase oily solid cosmetic is obtained.

[0031] When the multiphase oily solid cosmetic of the present invention is in a two-layer stick shape, the diameter of the cosmetic is preferably 9 to 30 mm, more preferably 11 to 20 mm. When it is within this range, the usability becomes more excellent. The diameter of the inner layer is preferably 4 to 20 mm, more preferably 5 to 10 mm, because the aesthetic property and shape retention property of the cosmetic can be made more excellent. The cross-sectional area of the inner layer is preferably 10 to 50%, more preferably 20 to 40% of the cross-sectional area of the stick-shaped multiphase oily solid cosmetic, because the aesthetic property and usability of the cosmetic can be made more excellent.

Examples

[0032] The present invention will be described in detail below with reference to examples. These do not limit the present invention in any way.

[0033] Example 1: Stick-shaped lipsticks 1 to 14 [Preparation of Oil-based Solid Composition] The first phase of the components and contents shown in Table 1 and the second phase of the components and contents shown in Table 2 were prepared by the following method, and the transparency of the appearance, visual confirmation of coloring, and measurement of hardness were carried out. Regarding the transparency of the appearance, a 12.5 mm thick sample melt-filled in a glass cell with a length of 12.5 mm × width of 12.5 mm × depth of 45 mm was placed on a white paper with a 1.5-point thick black line drawn on it. Those where the black line could be clearly seen from above the 12.5 mm thickness were evaluated as transparent, and the others were evaluated as opaque. All of the compositions of the first phase in Table 1 and the compositions of the second phase in Table 2 were transparent. Hardness was measured as the resistance value when the melted above composition was filled in a jar container, allowed to stand at 25 °C for 12 hours to solidify, and then a 2 mm needle was inserted at 6 cm / min using a 3 mmφ adapter with a FUDOH rheometer RTC2002D (manufactured by Rheotech).

[0034]

Table 1

[0035] ※1: Amino acid-based oil gelling agent GP-1 (manufactured by Ajinomoto Co., Inc.) ※2: Amino acid-based oil gelling agent EB-21 (manufactured by Ajinomoto Co., Inc.) ※3: Nomcoat HP-30 (manufactured by Nisshin Oillio Group Co., Ltd.) ※4: DOCADIT TM 13 N (manufactured by Nisshin Oillio Group Co., Ltd.) ※5: TPP Red No. 218 (manufactured by Kisuika Kasei Co., Ltd.) ※6: PEMULEN TR-2 (manufactured by Lubrizol Corporation)

[0036] (Manufacturing Method) A. Components (1) to (5) were uniformly dissolved at 130 °C. B. Components (6) to (8) were added to A and uniformly mixed.

[0037]

Table 2

[0038] ※7: Leopal KL2 (manufactured by Chiba Flour Milling Co., Ltd.) ※8: 12 - Hydroxystearic acid (manufactured by Ito Oil Co., Ltd.) ※9: AEROSIL R976S (manufactured by Nippon Aerosil Co., Ltd.)

[0039] A. Components (1) to (5) were uniformly dissolved at 90°C. B. Components (6) to (9) were added to A and uniformly mixed.

[0040] [Manufacture of Stick Lipstick] Using the obtained compositions of the first phase and the second phase, according to Table 3, stick lipsticks were manufactured by the following procedure. An inner layer mold with a bottom area of 0.6 cm 2 × height 4 cm was fixed inside a rod-shaped mold (stick mold) with a void of diameter 1.2 cm × height 4 cm inside. The first phase was melted at a temperature of 130°C or higher and filled up to the height of the mold on the outer layer side inside the stick mold (between the stick mold and the inner layer mold). After the first phase solidified, the inner layer mold was removed, and the second phase melted at a temperature of 90°C or higher was filled into the void part and cooled and solidified. The first phase and the second phase removed from the mold were loaded into a container. Thereby, lipsticks 1 to 14 in a two-layer stick shape with a transparent appearance, having the first phase as the outer layer and the second phase as the inner layer, were obtained. Lipsticks 1 to 14 obtained were evaluated by the following evaluation method, and the evaluation results are shown in Table 3.

[0041]

Table 3

[0042] (Evaluation Method) I. Usability Ten professional panelists evaluated the usability (whether it has a smooth usability) of each lipstick in Table 3. Specifically, when applying to the lips, it was evaluated whether the inner layer and the outer layer adhered to the lips smoothly and uniformly. Evaluation was made on a 7-point scale according to the following absolute evaluation criteria, scores were given, and for each lipstick, the average value was calculated from the total scores of all panelists, and judgment was made according to the following judgment criteria.

[0043] Absolute evaluation criteria (Score): (Evaluation) 6: Very good 5: Good 4: Slightly good 3: Normal 2: Slightly bad 1: Bad 0: Very bad Judgment criteria (Judgment): (Average score) A: Exceeding 4.5 points: Very good B: Exceeding 3 points and below 4.5 points: Good C: 3 points or below: Bad

[0044] II. Filling formability (release property) When removing from the mold during molding, it was visually confirmed whether there was peeling on the top surface of the inner layer of the lipstick. Those without obvious peeling were evaluated as A, and those with obvious peeling were evaluated as B.

[0045] III. High-temperature stability (protrusion of the inner layer) After storing at 50°C for 1 week, it was visually confirmed whether there was protrusion of the inner layer. Those without protrusion of 0.5 mm or more were evaluated as A, and those with protrusion of 0.5 mm or more were evaluated as B.

[0046] IV. High-temperature stability (shrinkage of the inner layer) After storing at 50°C for 1 week, it was visually confirmed whether there was shrinkage in the inner layer. Those without obvious gaps between the outer layer and the inner layer were evaluated as A, and those with obvious gaps between the outer layer and the inner layer were evaluated as B.

[0047] As is clear from the results in Table 3, all of Lipsticks 1 to 14 were transparent and had high aesthetic properties. In particular, Lipsticks 1, 2, 4, and 5 had a high aesthetic appearance of being colorless and transparent, a smooth feeling in use, and a makeup effect by dyes, and were lipsticks with high stability in the high-temperature region. Lipstick 8 with a low hardness inner layer had protrusions in the inner layer. Also, Lipstick 9 with a low hardness inner layer sometimes could not maintain its shape during application. Lipstick 7 with high hardness in both the inner and outer layers had slightly inferior adhesion during use. Lipsticks 1 - 11 and 13 had a colorless and transparent inner layer and outer layer, and the whole lipstick was colorless and transparent, beautiful, and had high aesthetic value. Furthermore, Lipsticks 1 - 11 and 13 vividly developed the dye only when applied to the lips and had excellent makeup effects with the dye.

[0048] Example 2: Stick - shaped Tint Cheek First Phase (Outer Layer) Component (%) (1) Dibutyl Lauroyl Glutamide ※1 8 (2) Dibutyl Ethylhexanoyl Glutamide ※2 2 (3) Diisostearyl Malate 50 (4) Hydrogenated Polydecene Remainder (5) Tritridecyl Trimellitate 20 (6) Phenoxyethanol 0.2 (7) Echinacea Extract 0.1 (8) Raspberry Extract 0.1 Second Phase (Inner Layer) Component (%) (1) Dextrin Palmitate 15 (2) (Palmitic Acid·2 - Ethylhexanoic Acid) Dextrin 5 (3) Diisostearyl Malate 30 (4) Tritridecyl Trimellitate 20 (5) Diglyceryl Triisostearate Remainder (6) Phenoxyethanol 0.1 (7) Red No. 218 0.1 (8) Fragrance 0.2

[0049] (Manufacturing Method) First Phase A. Components (1) - (8) were uniformly dissolved at 130 °C. Second Phase Components (1) to (5) were uniformly dissolved at 90°C. To A, components (6) to (8) were added and uniformly mixed. Stick-shaped tint cheek A rod-shaped inner layer mold was fixed inside a rod-shaped mold (stick mold) with a gap inside. The first phase was melted at a temperature of 130°C or higher and filled up to the height of the mold on the outer layer side (between the stick mold and the inner layer mold) inside the stick mold. After the first phase solidified, the inner layer mold was removed, and the second phase melted at a temperature of 90°C or higher was filled into the gap portion and cooled to solidify. The first phase and the second phase removed from the mold were loaded into a container. Thereby, a stick-shaped tint cheek with a transparent appearance having the first phase as the outer layer and the second phase as the inner layer was obtained. The mass ratio of the first phase to the second phase (first phase: second phase) in the stick-shaped tint cheek was 3:7.

[0050] The obtained stick-shaped tint cheek had a colorless and transparent outer layer and inner layer, and was excellent in smooth usability, makeup effect by dyes, filling moldability, high-temperature stability, and aesthetic property.

[0051] Example 3: Tint lip cream First phase (outer layer) Component (%) (1) Dibutyl lauroyl glutamide ※1 4 (2) Dibutyl ethylhexanoyl glutamide ※2 1 (3) Diisostearyl malate 40 (4) Hydrogenated polydecene balance (5) Tritridecyl trimellitate 20 (6) Polyglyceryl-10 octylate 20 (7) Methylphenyl polysiloxane 5 (8) Ethylhexyl glycerin 0.2 Second phase (inner layer) Component (%) (1) Dextrin palmitate 10 (2) (Palmitic acid·2-ethylhexanoic acid) dextrin 5 (3) Diisostearyl malate 20 (4) Trilauryl Trimellitate 20 (5) Ethylhexyl Paramethoxycinnamate 20 (6) Diglyceryl Triisostearate balance (7) Polybutene※10 20 (8) Ethylhexylglycerin 0.1 (9) Red No. 218 0.1 (10) DL-α-Tocopheryl Acetate 0.5 (11) Fragrance 0.2 ※10: Purified Polybutene 100F (manufactured by Nippon Natural Products Co., Ltd.)

[0052] (Manufacturing Method) First Phase A. Components (1) to (8) were uniformly dissolved at 130°C. Second Phase A. Components (1) to (7) were uniformly dissolved at 90°C. B. Components (8) to (11) were added to A and uniformly mixed. Tint Lip Cream A star-shaped inner mold was fixed in the center of a resin dish. The first phase was melted at a temperature of 130°C or higher and filled to the height of the resin dish on the outer layer side inside the resin dish (between the outer edge of the resin dish and the inner mold). After the first phase solidified, the inner mold was removed, and the second phase melted at a temperature of 90°C or higher was filled into the void part and cooled and solidified. The first phase and the second phase removed from the mold were loaded into a container. As a result, a tint lip cream with a transparent appearance having the first phase as the outer layer and the second phase as the inner layer was obtained. The mass ratio of the first phase to the second phase (first phase: second phase) in the tint lip cream was 4:6.

[0053] The obtained tint lip cream had a colorless and transparent outer layer and inner layer, and was excellent in smooth usability, makeup effect by dyes, filling moldability, high-temperature stability, and aesthetic property.

[0054] Example 4: Stick Tint Eye Color First Phase (Outer Layer) Component (%) (1) Dibutyl Lauroyl Glutamide 5 (2) Polyglyceryl-10 Isostearate 20 (3) Diglyceryl Triisostearate balance (4) Decyl Tetradecanol 10 (5) Hydrogenated Polydecene 50 (6) Polyethylene Terephthalate · Poly(methyl methacrylate) laminated film powder 3 (7) Phenoxyethanol 0.2 Second Phase (Inner Layer) Ingredient (%) (1) Dextrin Palmitate 10 (2) (Palmitic acid·2-ethylhexanoic acid) dextrin 5 (3) Diisostearyl Malate 10 (4) Tritridecyl Trimellitate 20 (5) Ethylhexyl Paramethoxycinnamate 20 (6) Triethylhexanoin balance (7) Polybutene※10 20 (8) Polyethylene Terephthalate · Poly(methyl methacrylate) laminated film powder 5 (9) Phenoxyethanol 0.1 (10) Oil-soluble Rosemary 0.1 (11) Red No. 218 0.1 (12) Fragrance 0.2

[0055] (Manufacturing Method) First Phase A. Ingredients (1) to (5) were uniformly dissolved at 130°C. B. Ingredients (6) and (7) were added to A and uniformly mixed. Second Phase A. Ingredients (1) to (3) were uniformly dissolved at 90°C. B. Ingredients (4) to (12) were added to A and uniformly mixed. Stick Tint Eye Color A rod-shaped inner layer mold was fixed inside a rod-shaped mold (stick type) with a gap inside. The first phase was melted at a temperature of 130 °C or higher and filled up to the height of the mold on the outer layer side of the stick type (between the stick side and the inner layer mold). After the first phase solidified, the inner layer mold was removed, and the second phase melted at a temperature of 90 °C or higher was filled into the gap portion and cooled to solidify. The first phase and the second phase removed from the mold were loaded into a container. As a result, a stick tint eye color with a transparent appearance having the first phase as the outer layer and the second phase as the inner layer was obtained. The mass ratio of the first phase to the second phase (first phase: second phase) in the stick tint eye color was 6:4.

[0056] The obtained stick tint eye color had a colorless and transparent outer layer and inner layer, and was excellent in smooth usability, makeup effect by dyes, filling moldability, high-temperature stability, and aesthetic property.

[0057] Example 5: Hair Wax First Phase Composition (%) (1) Dibutyl lauroyl glutamide ※1 8 (2) Dibutyl ethylhexanoyl glutamide ※2 2 (3) Diisostearyl malate 50 (4) Hydrogenated polydecene balance (5) Tritridecyl trimellitate 20 (6) Phenoxyethanol 0.2 (7) Cysteine 0.1 Second Phase Composition (%) (1) Dextrin palmitate 15 (2) Diisostearyl malate 30 (3) Tritridecyl trimellitate 20 (4) Diglyceryl triisostearate balance (5) Phenoxyethanol 0.1 (6) Red No. 218 0.1 (7) Fragrance 0.2 Third Phase Composition (%) (1) Dextrin palmitate 15 (2) Diisostearyl malate 30 (3) Tritridecyl trimellitate 20 (4) Diglyceryl triisostearate balance (5) Phenoxyethanol 0.1 (6) Bengal - Titanium oxide - coated glass powder 0.5 (7) Red No. 223 0.05 (8) Fragrance 0.2

[0058] (Manufacturing method) First phase A. Components (1) to (5) were uniformly dissolved at 130 °C. B. Components (6) and (7) were added to A and uniformly mixed. Second phase (red transparent) A. Components (1) to (5) were uniformly dissolved at 90 °C. B. Components (6) and (7) were added to A and uniformly mixed. Third phase (colorless transparent) A. Components (1) to (5) were uniformly dissolved at 90 °C. B. Components (6) to (8) were added to A and uniformly mixed. Hair wax Two partition plates were fixed in parallel inside the jar container so that the inside of the jar container was divided into three compartments. The first phase was dissolved at a temperature of 130 °C or higher and filled to the height of the jar container in the central compartment of the three compartments. After the first phase solidified, the two partition plates were removed, and one of the gaps at both ends was filled with the second phase (red transparent) dissolved at a temperature of 90 °C or higher. The other gap was filled with the third phase (colorless transparent) dissolved at a temperature of 90 °C or higher. The second phase and the third phase were cooled and solidified to obtain a hair wax with a transparent appearance. The mass ratio of the first phase, the second phase, and the third phase in the hair wax (first phase: second phase: third phase) was 2:2:3.

[0059] The obtained hair wax had a colorless and transparent first phase and third phase, and a red - transparent second phase, and was excellent in smooth usability, cosmetic effect, filling formability, high - temperature stability, and aesthetic property.

Claims

1. having a transparent first phase and a transparent second phase that are in contact with each other, wherein the first phase contains component (A) an amino acid-based gelling agent and a first oil agent, and the second phase contains component (B) a dextrin fatty acid ester, component (C) a dye, and a second oil agent, and is a multiphase oily solid cosmetic, wherein the content of component (B) is 13.5 to 25% by mass, and the multiphase oily solid cosmetic is in the form of a two-layer stick with the first phase as the outer layer and the second phase as the inner layer.

2. The multiphase oily solid cosmetic according to claim 1, wherein component (A) includes one or more selected from dibutyllauroylglutamide and dibutylethylhexanoylglutamide.

3. The multiphase oily solid cosmetic according to claim 1 or 2, wherein the first oil agent includes one or more selected from diisostearyl malate, tritridecyl trimellitate, and polyglyceryl-2 triisostearate.

4. The multiphase oily solid cosmetic according to any one of claims 1 to 3, wherein the second oil agent includes one or more selected from diisostearyl malate, tritridecyl trimellitate, and polyglyceryl-2 triisostearate.

5. The multiphase oily solid cosmetic according to any one of claims 1 to 4, wherein the second phase contains component (C) in an amount of 0.05 to 0.3% by mass.

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