Cosmetic

Abstract

Provided is a cosmetic which suppresses fading of an organic pigment in a cosmetic in which titanium dioxide particles and the organic pigment are used together, and which has excellent fading resistance. The cosmetic contains the following components: (a) an organic pigment; (b) titanium dioxide particles; the present invention relates to an oil-in-oil composition comprising (a) an oil-in-oil composition, (c) 4-tert-butyl-4 '-methoxybenzoylmethane, (d) a phospholipid and / or a hydride thereof, and (e) an oil component, the ratio of the content of component (d) to the content of component (c) being less than 1.0.

Description

Technical Field

[0001] The present invention relates to cosmetics. Background Art

[0002] In cosmetics, such as makeup cosmetics, various pigments are usually blended for the purpose of exerting their beauty effects.

[0003] However, these pigments are very unstable to ultraviolet rays and oxidation, and there are problems such as the color tone of the cosmetics changing and being damaged, and the quality of the cosmetics being reduced. In particular, red organic pigments, which are often used in cosmetics such as lipsticks and eye shadows, fade significantly, and this fading has a great impact on the color tone of the cosmetics.

[0004] Therefore, in cosmetics containing organic pigments, it is strongly desired to improve the light fastness, that is, the fading resistance, of organic pigments, especially red organic pigments.

[0005] To address such a problem, for example, Patent Document 1 discloses a color cosmetic containing an organic pigment, wherein 4-tert-butyl-4′-methoxybenzoylmethane, calcium stearate, and phospholipid and / or a hydrogenated product thereof are blended.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2005-200378 Summary of the invention

[0009] Problems to be solved by the invention

[0010] Titanium dioxide particles are often mixed into cosmetics such as lipstick and eye shadow as white pigment or ultraviolet scattering agent.

[0011] The present inventors have found that, in a cosmetic material in which an organic pigment, particularly Red No. 104 (1), is blended with titanium dioxide particles, Red No. 104 (1) significantly fades.

[0012] The present invention aims to improve the above situation and has an object to provide a cosmetic which suppresses the fading of an organic pigment in a cosmetic using titanium dioxide particles and an organic pigment together, that is, provides a cosmetic which has excellent fading resistance.

[0013] Means for solving problems

[0014] The present invention for achieving the above-mentioned object is as follows.

[0015] <Scheme 1>

[0016] A cosmetic comprising the following ingredients:

[0017] (a) organic pigments;

[0018] (b) titanium dioxide particles;

[0019] (c) 4-tert-butyl-4'-methoxybenzoylmethane;

[0020] (d) phospholipids and / or hydrogenated forms thereof; and

[0021] (e) Oil content,

[0022] The ratio of the content of the component (d) to the content of the component (c) is less than 1.0.

[0023] <Scheme 2>

[0024] According to the cosmetic of embodiment 1, the organic pigment includes Red No. 104 (1).

[0025] <Scheme 3>

[0026] In the cosmetic according to aspect 1 or 2, the above ratio is 0.5 or less.

[0027] <Scheme 4>

[0028] The cosmetic according to any one of aspects 1 to 3, wherein the content of the 4-tert-butyl-4'-methoxybenzoylmethane is 0.1 to 10% by mass.

[0029] <Scheme 5>

[0030] The cosmetic according to any one of aspects 1 to 4, wherein the content of the phospholipid and / or its hydrogenated product is 0.01 to 5.0% by mass.

[0031] <Scheme 6>

[0032] The cosmetic according to any one of aspects 1 to 5, wherein the content of the titanium dioxide particles is 0.1 to 20% by mass.

[0033] <Scheme 7>

[0034] The cosmetic according to any one of aspects 1 to 6, wherein the content of the organic pigment is 0.001 to 20% by mass.

[0035] <Scheme 8>

[0036] The cosmetic according to any one of aspects 1 to 7, wherein the oil component has an apparent iodine value of 6.0 to 30.0.

[0037] <Scheme 9>

[0038] The cosmetic according to any one of aspects 1 to 8, which is an oil-based cosmetic.

[0039] <Scheme 10>

[0040] The cosmetic according to any one of aspects 1 to 9, which is a lip cosmetic.

[0041] Effects of the Invention

[0042] According to the present invention, discoloration of an organic pigment in a cosmetic material using titanium dioxide particles and an organic pigment together can be suppressed. DETAILED DESCRIPTION

[0043] Hereinafter, embodiments of the present invention will be described in detail. It should be noted that the present invention is not limited to the following embodiments, and various modifications can be made within the scope of the spirit of the invention.

[0044] 《Makeup Materials》

[0045] The cosmetic of the present invention is the following cosmetic,

[0046] It contains the following ingredients:

[0047] (a) organic pigments;

[0048] (b) titanium dioxide particles;

[0049] (c) 4-tert-butyl-4'-methoxybenzoylmethane;

[0050] (d) phospholipids and / or hydrogenated forms thereof; and

[0051] (e) Oil content,

[0052] The ratio of the content of the component (d) to the content of the component (c) is less than 1.0.

[0053] Although not limited by theory, it is speculated that the discoloration of the organic pigment when titanium dioxide particles are used together with the organic pigment is based on the following mechanism. That is, it is believed that the titanium dioxide particles in the cosmetic are irradiated with light to generate free radicals, and then the organic pigment such as Red No. 104 (1) is attacked by the free radicals and discolors.

[0054] In order to solve the fading problem, the present inventors have found that by including 4-tert-butyl-4'-methoxybenzoylmethane and phospholipids and / or their hydrogenated products as specific components in the cosmetic of the present invention at a specific mass content ratio, the fading of organic pigments such as Red No. 104 (1) can be suppressed.

[0055] Although not limited by theory, it is considered that free radicals from titanium dioxide particles are transferred by 4-tert-butyl-4'-methoxybenzoylmethane, and the phospholipids and / or their hydrides deactivate the transferred free radicals, thereby suppressing the fading of organic pigments such as Red No. 104 (1).

[0056] Furthermore, through further in-depth studies by the present inventors, it was found that when the ratio of the content of component (d) (phospholipid and / or its hydride) to the content of component (c) (4-tert-butyl-4'-methoxybenzoylmethane) is less than 1.0, fading of organic pigments such as Red No. 104 (1) can be particularly suppressed. When the ratio is 1.0 or more, that is, when the content of phospholipid and / or its hydride is the same as or greater than the content of 4-tert-butyl-4'-methoxybenzoylmethane, it is presumed that the content of 4-tert-butyl-4'-methoxybenzoylmethane is relatively too small, so that the transfer of free radicals from titanium dioxide particles is not sufficiently performed, and / or the content of phospholipid and / or its hydride is relatively too large, thereby causing some influence on nearby organic pigments such as Red No. 104 (1) when the free radicals are deactivated, thereby promoting fading.

[0057] It should be noted that in the present invention, "the ratio of the content of phospholipids and / or their hydrides to the content of 4-tert-butyl-4'-methoxybenzoylmethane" can be calculated by the formula "mass content of phospholipids and / or their hydrides / mass content of 4-tert-butyl-4'-methoxybenzoylmethane". When component (d) contains two or more phospholipids and / or their hydrides, their total mass content is used for calculation.

[0058] In the cosmetic of the present invention, the ratio of the content of phospholipids and / or its hydride to the content of 4-tert-butyl-4'-methoxybenzoylmethane is less than 1.0, and more specifically, it can be 0.95 or less, 0.90 or less, 0.85 or less, 0.80 or less, 0.75 or less, 0.70 or less, 0.65 or less, 0.60 or less, 0.55 or less, 0.50 or less, 0.45 or less, 0.40 or less, 0.35 or less, 0.30 or less, 0.25 or less, 0.20 or less, 0.15 or less, 0.10 or less, 0.09 or less, 0.08 or less, 0.07 or less, 0.06 or less, 0.05 or less, or 0.04 or less. In addition, the lower limit of the ratio is not particularly limited as long as it exceeds 0, and for example, it can be 0.01 or more, 0.02 or more, 0.03 or more, or 0.04 or more.

[0059] Hereinafter, each component that can be contained in the cosmetic of the present invention will be described in detail.

[0060] 〈Ingredient (a) Organic pigment〉

[0061] The organic pigment that can be contained in the cosmetic of the present invention is not particularly limited, and may be any of those that can be used in general cosmetics. More specifically, for example, red 201, red 202, red 204, red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401, blue 404, red 3, red 104 (1), red 106, red 227, red 230, red 401, red 505, orange 205, yellow 4, yellow 5, yellow 202, yellow 203, green 3, and blue 1 may be mentioned. The cosmetic of the present invention may contain one or more of these organic pigments. In particular, when a red organic pigment, especially red 104 (1), is contained, the effect of the present invention is more remarkable. Here, Red No. 104 (1) (or simply referred to as "Red No. 104") is a colorant that can color a pink color, and is also referred to as "fluorescent pink B".

[0062] In the cosmetic of the present invention, the content of the organic pigment is not particularly limited, and for example, it may be 0.001% by mass or more, 0.005% by mass or more, 0.01% by mass or more, 0.05% by mass or more, 0.10% by mass or more, 0.50% by mass or more, 1.0% by mass or more, 1.1% by mass or more, 1.2% by mass or more, 1.3% by mass or more, 1.4% by mass or more, 1.5% by mass or more, 1.6% by mass or more, 1.7% by mass or more, 1.8% by mass or more, 1.9% by mass or more, 2.0% by mass or more, 2.1% by mass or more, 2.2% by mass or more, 2.3% by mass or more, 2.4% by mass or more, or 2.5% by mass or more, relative to the entire cosmetic. In addition, it may be 20% by mass or less, 15% by mass or less, 10% by mass or less, or 5.0% by mass or less.

[0063] <Component (b) Titanium dioxide particles>

[0064] The titanium dioxide particles that can be contained in the cosmetic of the present invention are not particularly limited and may be those commonly used in cosmetics, for example, titanium dioxide particles used as an inorganic pigment (eg, white pigment) or an ultraviolet scattering agent.

[0065] In the present invention, the titanium dioxide particles may be used as they are or may be treated to be hydrophobic. Therefore, at least a portion of the surface of the titanium dioxide particles may be coated with other materials such as silicone.

[0066] In the cosmetic of the present invention, the content of the titanium dioxide particles (it should be noted that, when the titanium dioxide particles are coated, the weight of the coating material is included in the content of the titanium dioxide particles) is not particularly limited, and for example, it may be 0.01% by mass or more, 0.05% by mass or more, 0.10% by mass or more, 0.50% by mass or more, 1.0% by mass or more, 1.1% by mass or more, 1.2% by mass or more, 1.3% by mass or more, 1.4% by mass or more, 1.5% by mass or more, 1.6% by mass or more, 1.7% by mass or more, 1.8% by mass or more, 1.9% by mass or more, 2.0% by mass or more, 2.1% by mass or more, 2.2% by mass or more, 2.3% by mass or more, 2.4% by mass or more, or 2.5% by mass or more, relative to the entire cosmetic. In addition, it may be 20% by mass or less, 15% by mass or less, 10% by mass or less, or 5.0% by mass or less.

[0067] When the titanium dioxide particles are coated with a coating material that is an organic material and / or an inorganic material, the coating amount of the coating material is generally within 20% by mass of the entire titanium dioxide particles.

[0068] <Component (c) 4-tert-butyl-4'-methoxybenzoylmethane>

[0069] 4-tert-Butyl-4'-methoxybenzoylmethane is a dibenzoylmethane derivative represented by the following structural formula (I), and is commonly used in basic cosmetics and color cosmetics as an oil-soluble ultraviolet absorber:

[0070]

[0071] This 4-tert-butyl-4'-methoxybenzoylmethane is commercially available, and in the present invention, for example, a commercially available product such as Parsol 1789 (manufactured by Givandan) can be used.

[0072] In the cosmetic of the present invention, the content of 4-tert-butyl-4'-methoxybenzoylmethane is not particularly limited. For example, from the viewpoint that the effect of the present invention is better utilized, the content of the 4-tert-butyl-4'-methoxybenzoylmethane can be 0.1 mass %, 0.2 mass %, 0.3 mass %, 0.4 mass %, 0.5 mass %, 0.6 mass %, 0.7 mass %, 0.8 mass %, 0.9 mass %, 1.0 mass %, 1.1 mass %, 1.2 mass %, 1.3 mass %, 1.4 mass %, 1.5 mass %, 1.6 mass %, 1.7 mass %, 1.8 mass %, 1.9 mass %, 2.0 mass %, 2.1 mass %, 2.2 mass %, 2.3 mass %, 2.4 mass %, or 2.5 mass %. In addition, from the viewpoint of safety and usability, the content of 4-tert-butyl-4'-methoxybenzoylmethane can be 10% by mass or less, 9.5% by mass or less, 9.0% by mass or less, 8.5% by mass or less, 8.0% by mass or less, 7.5% by mass or less, 7.0% by mass or less, 6.5% by mass or less, 6.0% by mass or less, 5.5% by mass or less, 5.0% by mass or less, 4.5% by mass or less, 4.0% by mass or less, 3.5% by mass or less, 3.0% by mass or less, or 2.5% by mass or less relative to the entire cosmetic.

[0073] <Component (d) phospholipids and / or hydrogenated products thereof>

[0074] In the present invention, phospholipids and / or their hydrides can be natural or synthetic phospholipids or their hydrides. In addition, phospholipids can be substances used as raw materials of cosmetics, such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidic acid, phosphatidylglycerol, or their lysates, etc.

[0075] The phospholipids and / or hydrogenated products thereof that can be contained in the cosmetic of the present invention are not particularly limited, and examples thereof include natural phospholipid-containing substances extracted from plants such as soybeans, corn, rapeseed, or microorganisms, substances that have been hydrogenated, and phospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidic acid, phosphatidylglycerol, etc., obtained by synthesis or separated or fractionated from nature, or a mixture of one or more thereof.

[0076] In addition, the phospholipids and / or their hydrogenated products used in the present invention may preferably contain 10% by mass or more of phosphatidylethanolamine, more preferably 15% by mass or more, and further preferably 18% by mass or more. For example, soybean lecithin, particularly Biosis LP-20H (phosphatidylethanolamine content 18 to 25% by mass) commercially available from Nissin OILIO as hydrogenated soybean lecithin, may be suitably used in the present invention.

[0077] In the cosmetic of the present invention, the content of the phospholipid and / or its hydrogenated product is not particularly limited, but from the viewpoint of better exerting the effect of the present invention, it can be 0.01% by mass or more, 0.02% by mass or more, 0.03% by mass or more, 0.04% by mass or more, 0.05% by mass or more, 0.06% by mass or more, 0.07% by mass or more, 0.08% by mass or more, 0.09% by mass or more, 0.10% by mass or more, 0.11% by mass or more, 0.12% by mass or more, 0.13% by mass or more, 0.14% by mass or more, 0.15% by mass or more, 0.16% by mass or more, 0.17% by mass or more, 0.18% by mass or more, 0.19% by mass or more, or 0.20% by mass or more relative to the entire cosmetic. In addition, from the viewpoint of usability, the content of phospholipids and / or their hydrides can be 5.0 mass % or less, 4.0 mass % or less, 3.0 mass % or less, 2.0 mass % or less, 1.0 mass % or less, 0.9 mass % or less, 0.8 mass % or less, 0.7 mass % or less, 0.6 mass % or less, or 0.5 mass % or less relative to the entire cosmetic. It should be noted that in the present invention, when the cosmetic of the present invention includes both phospholipids and their hydrides, "the content of phospholipids and / or their hydrides" refers to their total content.

[0078] 〈Ingredient (e) Oil〉

[0079] The oil component that can be contained in the cosmetic of the present invention is not particularly limited, and can be a substance that can be used in a common cosmetic, such as a vegetable oil or a synthetic oil. In addition, as its properties, it can be, for example, solid, semi-solid, liquid, volatile. More specifically, as the oil component, for example, hydrocarbon oils, greases, waxes / waxes, hardened oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, oily gelling agents, polar oils, etc. can be cited, but are not limited to these. The oil component can be used alone or in combination of two or more.

[0080] Examples of the hydrocarbon oil include liquid paraffin, heavy liquid isoparaffin, α-olefin oligomers, squalane, petrolatum, polyisobutene, hydrogenated polyisobutene, polybutene, hydrogenated polybutene, polydecene, and hydrogenated polydecene.

[0081] Examples of the oils and fats include olive oil, castor oil, jojoba oil, macadamia oil, and the like.

[0082] Examples of the wax / waxes include paraffin wax, ceresin wax, microcrystalline wax, polyethylene wax, montan wax, Fischer-Tropsch wax, carnauba wax, candelilla wax, wood wax, and beeswax.

[0083] Examples of fatty acids include stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, and oleic acid.

[0084] Examples of the higher alcohols include stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, and octyldodecanol.

[0085] Examples of the silicones include low-polymerization degree dimethyl polysiloxane, high-polymerization degree dimethyl polysiloxane, methylphenyl polysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether-modified polysiloxane, polyoxyalkylene / alkylmethyl polysiloxane / methyl polysiloxane copolymer, alkoxy-modified polysiloxane, crosslinked organopolysiloxane, and fluorine-modified polysiloxane.

[0086] Examples of the fluorine-based oils include perfluorodecane, perfluorooctane, and perfluoropolyether.

[0087] Examples of the oil-based gelling agents include sucrose fatty acid esters, starch fatty acid esters, 12-hydroxystearate aluminum, calcium stearate, and the like.

[0088] As polar oils, for example, polar oils having an IOB of 0.10 or more, 0.15 or more, 0.20 or more, 0.22 or more, or 0.24 or more can be cited. There is no particular limitation on the upper limit of IOB, and for example, it can be 0.50 or less, 0.45 or less, or 0.40 or less. Here, the so-called IOB value is an abbreviation of Inorganic / Organic Balance, and is a value representing the ratio of the inorganic value to the organic value, and becomes an index representing the degree of polarity of an organic compound. Specifically, the IOB value is represented as IOB value = inorganic value / organic value. Regarding the "inorganic value" and "organic value", for example, by setting the "inorganic value" corresponding to various atoms or functional groups in a molecule in a manner such that the "organic value" for one carbon atom is 20 and the "inorganic value" for one hydroxyl group is 100, and by accumulating the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound, the IOB value of the organic compound can be calculated (see, for example, Yoshio Koda, "Organic Concept Map - Fundamentals and Applications", pp. 11-17, Sankyo Publishing, 1984).

[0089] Examples of such polar oils include neopentyl glycol dicaprate, glyceryl tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, tri(caprylic acid / capric acid)glyceryl, diethylhexyl sebacate, octyldodecanol, glyceryl diisostearate, diglyceryl triisostearate, diisostearyl malate, trimethylolpropane tri-2-ethylhexanoate, hydroxystearyl hydroxystearate, pentaerythritol tetra(ethylhexanoic acid / benzoic acid), glyceryl tricaprylate, pentaerythritol tetracaprylate, dipentaerythritol hexahydroxystearate, castor oil, diisopropyl sebacate, pentaerythritol tetracaprylate, and trimethylolpropane triisostearate.

[0090] Among the above oil components, from the viewpoint of further transferring free radicals from titanium dioxide particles, it is particularly preferred to include an oil component that can dissolve 4-tert-butyl-4'-methoxybenzoylmethane. For example, the oil component preferably includes at least one selected from hydrogenated polyisobutene, microcrystalline wax, polyethylene wax, octyldodecanol, diisostearyl malate, and neopentyl glycol dicaprate.

[0091] In addition, in the present invention, the apparent iodine value of the oil component may be 6.0 to 30.0. Here, as a measure of the unsaturated portion contained in the oil component, the "apparent iodine value of the oil component" is used. The larger the apparent iodine value of the oil component, the greater the proportion of the unsaturated portion relative to the entire cosmetic.

[0092] It should be noted that, when the cosmetic contains only one kind of oil component, the "apparent iodine value of the oil component" is the product of the iodine value of the oil component and the weight ratio of the oil component to the whole cosmetic. For example, when the cosmetic contains only oil component A as the oil component, if the iodine value of oil component A is set to "a" and the content ratio of oil component A to the whole cosmetic is set to "x mass %", the "apparent iodine value of the oil component" of the cosmetic can be calculated by the following formula (1):

[0093] Apparent iodine value of oil = a×x%…(1)

[0094] In addition, when the cosmetic contains two or more oil components, the "apparent iodine value of the oil component" is a value obtained by adding the product of the iodine value of each oil component and the weight ratio of the oil component to the entire cosmetic to all the oil components. For example, when the cosmetic contains two different oil components A and B, if the iodine value of the oil component A is set to "a", and the content of the oil component A to the entire cosmetic is set to "x mass %, and the iodine value of the oil component B is set to "b", and the content of the oil component B to the entire cosmetic is set to "y mass %, then the "apparent iodine value of the oil component" of the cosmetic can be calculated by the following formula (2):

[0095] Apparent iodine value of oil = a×x%+b×y%…(2)

[0096] The iodine value of each oil component is the number of grams of iodine (I2) that can be added to 100 g of an oil component sample, and can be measured by a test in accordance with Japanese Industrial Standard (JIS) K0070:1992.

[0097] In the present invention, "saturated oil" can be defined as an oil having an iodine value of 5.0 or less, and "unsaturated oil" can be defined as an oil having an iodine value of more than 5.0.

[0098] In the cosmetic of the present invention, the content of the oil component is not particularly limited and can be appropriately set according to the dosage form of the cosmetic as the target. For example, the content of the oil component can be 1.0 mass % or more, 5.0 mass % or more, 10 mass % or more, 20 mass % or more, 30 mass % or more, 40 mass % or more, 50 mass % or more, 60 mass % or more, 70 mass % or more, 80 mass % or more, or 90 mass % or more, and can be 99 mass % or less, 95 mass % or less, or 90 mass % or less relative to the entire cosmetic.

[0099] 〈Other optional ingredients〉

[0100] The cosmetic of the present invention may further contain one or more other optional components in addition to the above-mentioned components, unless the effects of the present invention are impaired.

[0101] In the present invention, as other arbitrary components, for example surfactant, water, wetting agent, macromolecular, thickening agent, epidermal agent, ultraviolet light absorber, metal ion blocking agent, lower alcohol, polyol, sugar, amino acid, organic amine, macromolecular emulsion, pH adjusting agent, skin nutrition agent, vitamin, antioxidant, antioxidant auxiliary agent, spices etc. can be enumerated, but are not limited to these.As long as the effect of the present invention is not damaged, just can suitably mix other arbitrary components, according to the type of the cosmetic material as target, manufacture by ordinary method.In addition, except above-mentioned organic pigment, as long as the effect of the present invention is not damaged, just can comprise other arbitrary colorant that common cosmetic material uses.

[0102] 〈Dosage forms and uses of cosmetics〉

[0103] The cosmetic of the present invention is not particularly limited to its dosage form, and any dosage form such as an oily type, an emulsified type, or a powder type can be cited. Among these dosage forms, the oily type, in particular, the fading of organic pigments is prone to become a problem, so the cosmetic of the present invention is preferably an oily cosmetic. It should be noted that the so-called oily cosmetic refers to a cosmetic with an oily agent or an oil-soluble compound as a liquid, semi-solid, or solid state as a continuous phase.

[0104] In addition, the use of the cosmetic of the present invention is not particularly limited, but it is preferably used as a lip cosmetic, for example.

[0105] Examples of lip cosmetics include lipsticks, lip glosses, lip care creams, lip balms, and lip primers. Among them, lipsticks and lip balms are particularly preferred.

[0106] Furthermore, the cosmetic of the present invention can also be used as, for example, foundation, blush, eye shadow, eyeliner, mascara, eyebrow pencil, nail polish, nail care, etc.

[0107] Example

[0108] The present invention will be described in further detail below with reference to Examples, but the present invention is not limited thereto. In addition, the blending amount is expressed in mass % unless otherwise specified.

[0109] 《Examples 1 to 6 and Comparative Examples 1 to 11》

[0110] Based on the constituent components and respective blending amounts shown in Table 1 below, lipstick samples of Examples 1 to 6 and Comparative Examples 1 to 11 were prepared.

[0111] (Evaluation method for fading)

[0112] Each of the prepared samples was subjected to a xenon fading meter (manufactured by Suga Testing Instruments Co., Ltd.) at 25°C and 120 MJ / m 2 The samples were irradiated for 30 hours, and the color difference (ΔE) of each sample before and after the irradiation was measured. The fading of the organic pigment of each sample was evaluated, and the evaluation results are shown in Table 1.

[0113] More specifically, the color difference (ΔE1) of Comparative Example 1 was used as a reference, and the color differences of the other samples (Examples 1 to 6 and Comparative Examples 2 to 11) were set as “ΔE x ", the "fading inhibition rate" of other samples was calculated by the following formula. In addition, the larger the value of the "fading inhibition rate", the less the sample fades, that is, the better the fading resistance.

[0114] The fading inhibition rate of the sample = [(ΔE1-ΔE x ) / ΔE1]×100%

[0115]

[0116] As is clear from Table 1, the samples of Examples 1 to 6 in which the ratio of the content of phospholipids and / or their hydrogenated products to the content of 4-tert-butyl-4'-methoxybenzoylmethane is less than 1.0 have a higher fading inhibition rate than the comparative example. This means that the samples of Examples 1 to 6 are excellent in fading resistance.

[0117] Furthermore, it is found that Comparative Example 11 is a sample blended with "calcium stearate" described in Patent Document 1, but because the ratio of the content of phospholipids and / or its hydrogenated product to the content of 4-tert-butyl-4'-methoxybenzoylmethane is 1.0, the fading resistance is poor.

[0118] 《Reference Examples 1 and 2》

[0119] In order to verify the fading of organic pigments caused by titanium dioxide particles, lipstick samples of Reference Examples 1 and 2 were prepared based on the components and compounding amounts shown in Table 2. In the same manner as the above-mentioned evaluation method, the fading of the samples of Reference Examples 1 and 2 was evaluated with Comparative Example 1 as a reference, and the results are shown in Table 2. In addition, for comparison, the results of Comparative Example 9 are also shown in Table 2.

[0120]

[0121] As can be seen from Table 2, Reference Examples 1 and 2 not containing titanium dioxide particles have a greater fading inhibition rate than Comparative Examples 1 and 9, which are the same except that titanium dioxide particles are contained, respectively, that is, the fading of the organic pigment is less.

[0122] Therefore, it is suggested that in a cosmetic material in which titanium dioxide particles and an organic pigment are used together, the discoloration of the organic pigment is caused by the presence of the titanium dioxide particles.

[0123] 《Reference Examples 3 to 12》

[0124] It is known that 4-tert-butyl-4'-methoxybenzoylmethane can be used as an ultraviolet absorber. Therefore, in Table 3, together with the fading inhibition effect of 4-tert-butyl-4'-methoxybenzoylmethane alone, the fading inhibition effect when other ultraviolet absorbers are used instead of 4-tert-butyl-4'-methoxybenzoylmethane is verified.

[0125] More specifically, lipstick samples of Reference Examples 3 to 12 were prepared based on the components and blending amounts shown in Table 3. The samples of Reference Examples 3 to 12 were evaluated for discoloration using Comparative Example 1 as a reference in the same manner as the above-mentioned evaluation method. The results are shown in Table 3.

[0126]

[0127] In Table 3, a negative value of the fading inhibition rate means that the fading inhibition effect is poorer than that of Comparative Example 1, that is, fading progresses. As is clear from Table 3, Reference Example 3 containing 4-tert-butyl-4'-methoxybenzoylmethane has a significantly superior fading inhibition effect compared to Reference Examples 4 to 12 containing other ultraviolet absorbers. This suggests that the fading inhibition effect brought about by 4-tert-butyl-4'-methoxybenzoylmethane is not just an effect as an ultraviolet absorber.

[0128] However, even Reference Example 3 containing 4-tert-butyl-4'-methoxybenzoylmethane has room for further improvement in the fading inhibition effect. In contrast, as shown in Table 1, Examples 1 to 6 also have excellent fading inhibition effects compared to Reference Example 3.

[0129] Prescription Examples

[0130] Hereinafter, the formulation examples of the cosmetic of the present invention will be described by way of example, but the present invention is not limited to these examples.

[0131] (Table 4 Prescription Examples)

[0132]

[0133] ※1: This is a dispersion of Red 104 (1) at 50% by mass in oil.

[0134] It should be noted that the iodine value of the oil is approximately 0.

[0135] ※2: This is a dispersion of 65% silicone-treated titanium oxide in oil.

[0136] The actual composition of silicone-treated titanium dioxide is calculated.

[0137] The iodine value of the oil in which titanium oxide is dispersed is about 0.

[0138] ※3: ブイシスLP-2OH (manufactured by Nisshin Sairy Co., Ltd.).

Claims

1. A cosmetic comprising the following ingredients: (a) organic pigments; (b) titanium dioxide particles; (c) 4-tert-butyl-4'-methoxybenzoylmethane; (d) phospholipids and / or hydrogenated forms thereof; and (e) Oil content, The ratio of the content of the component (d) to the content of the component (c) is less than 1.

0.

2. The cosmetic according to claim 1, wherein the organic pigment comprises Red No. 104 (1).

3. The cosmetic according to claim 1 or 2, wherein the ratio is 0.5 or less. 4 . The cosmetic according to claim 1 , wherein the content of 4-tert-butyl-4′-methoxybenzoylmethane is 0.1 to 10% by mass. 5 . The cosmetic according to claim 1 , wherein the content of the phospholipid and / or its hydrogenated product is 0.01 to 5.0% by mass. 6 . The cosmetic according to claim 1 , wherein the content of the titanium dioxide particles is 0.1 to 20% by mass.

7. The cosmetic according to claim 1 or 2, wherein the content of the organic pigment is 0.001 to 20% by mass.

8. The cosmetic according to claim 1 or 2, wherein the apparent iodine value of the oil component is 6.0 to 30.

0.

9. The cosmetic according to claim 1 or 2, which is an oily cosmetic.

10. The cosmetic according to claim 1 or 2, which is a lip cosmetic.

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