Iron oxide pigment for cosmetic compositions and cosmetic composition containing iron oxide pigment

Abstract

The present invention provides an iron oxide pigment for incorporating into cosmetic compositions, which exhibits large a and / or b values ​​and saturation even in low lightness regions, and also has high coloring power. An iron oxide pigment for cosmetic compositions, having an elemental content of Fe of 680 g / kg or more and 702 g / kg or less, an FeO content of 30 g / kg or less, an Fe2O3 content of 939 g / kg or more, and a total content of FeO and Fe2O3 of 968 g / kg or more, and is composed of a spinel structure or a spinel structure and a corundum structure.

Description

Technology Field

[0001] The present invention relates to an iron oxide pigment for cosmetic compositions and a cosmetic composition containing the iron oxide pigment. The iron oxide pigment of the present invention is particularly suitable for use in cosmetic compositions primarily for skin that are dark in color. Background Technology

[0002] Currently, significant changes are taking place in the environment surrounding cosmetics. In the past, the countries and regions with the economic power to purchase industrially produced cosmetics were limited, and the cosmetics demanded by the market were tailored to the physical characteristics and values ​​of the major populations in those countries and regions. However, recently, due to changes in the global economy and the demographic structures of various countries, the number of countries and regions with economic power has expanded to an unprecedented level, leading to a demand for a diverse range of cosmetics that did not exist before. In the field of skin cosmetics, there is a growing demand for products tailored to skin with low brightness—so-called dark-colored skin—which had not been prioritized until now.

[0003] Pigments with iron oxide as the main component are widely used as pigments for cosmetics because they possess various colors such as red, yellow, and black through oxidation and reduction, have excellent coloring power, and pose little harm to the human body, and the field of skin cosmetics is no exception. An example in Japanese Patent Publication No. 2014-101298 (Patent Document 1) describes preparing an aqueous dispersion for brown cosmetics by appropriately combining red iron oxide or yellow iron oxide with carbon black, and also manufacturing a pen-type eyeliner using said dispersion. Patent Document 1 describes that by using a specific fine-particle iron oxide as the iron oxide, no separation or sedimentation of the pigment over time is observed, and clogging of the pen-type container does not occur. However, when brown is reproduced by mixing pigments of various shades as in Patent Document 1, the components usually separate during storage due to differences in the physical properties of each pigment (hereinafter this phenomenon is described as "color separation"), making it difficult to use as a cosmetic. Furthermore, Patent Document 1 does not describe the coloring power of the pigments.

[0004] Japanese Patent Publication No. Hei 2-145506 (Patent Document 2) describes a brown-based liquid cosmetic composition consisting of at least black iron oxide oxidized by an oxidizing agent and water, and describes that by using the black iron oxide oxidized to a desired brown color as a coloring agent for the liquid cosmetic composition, color separation does not occur. Patent Document 2 describes using this brown-based liquid cosmetic composition in eyeliners, etc.

[0005] On the other hand, when used as a cosmetic for the skin, strict control of color is required compared to when used as an eyeliner, etc. While cosmetic for the skin needs to produce a vivid and healthy appearance, if there is a large difference in color from the surrounding skin, it may give an unnatural impression due to light reflection. In conventional cosmetic products, subtle color has been adjusted by incorporating color adjusters. When the desired color was in a high brightness range, color adjustment was possible through the incorporation of color adjusters. However, in low brightness ranges such as dark-colored skin, the saturation is also low, so it was difficult to adjust subtle color by incorporating color adjusters, and it was also difficult to produce vividness.

[0006] Furthermore, since skin cosmetics are applied over a wide area, texture and usability are strongly required. In this case, if the coloring power of the iron oxide pigment is low, the pigment must be incorporated in large quantities into the cosmetic composition; consequently, the user experiences a powdery texture when using the product, and it also becomes difficult to spread the product over a wide area.

[0007] For skin cosmetics tailored to dark colors, it is desirable that the saturation be high even in low lightness areas, and that the pigment contained therein has high coloring power. The brown liquid cosmetic of Literature 2 does not mention the saturation in low lightness areas and the coloring power of the pigment. Prior art literature

[0008] Japanese Published Patent Application No. 2014-101298 Japanese Published Patent Application No. Hei 2-145506 The problem to be solved

[0009] The present invention provides an iron oxide pigment for cosmetic compositions that exhibits high saturation even in low lightness areas and has high coloring power. An iron oxide pigment having the above characteristics is particularly suitable for use in cosmetic compositions for skin that match dark colors. means of solving the problem

[0010] The inventors, after carefully examining the composition of an iron oxide pigment to be incorporated into a cosmetic composition, discovered that an iron oxide pigment having a spinel structure or a spinel structure and a corundum structure, in which the content of Fe element is 680 g / kg or more and 702 g / kg or less, the content of FeO is 30 g / kg or less, the content of Fe2O3 is 939 g / kg or more, and the total content of FeO and Fe2O3 is 968 g / kg or more, exhibits high saturation even in a low lightness range when incorporated into a cosmetic composition, and also has high coloring power of the pigment.

[0011] The iron oxide pigment for the cosmetic composition and the cosmetic composition of the present invention include, but are not limited to, the following.

[0012] [1]

[0013] An iron oxide pigment for cosmetic compositions having a spinel structure or a spinel structure and a corundum structure, wherein the content of Fe element is 680 g / kg or more and 702 g / kg or less, the content of FeO is 30 g / kg or less, the content of Fe2O3 is 939 g / kg or more, and the total content of FeO and Fe2O3 is 968 g / kg or more.

[0014] [2]

[0015] An iron oxide pigment as described in [1], wherein Pb is 10 mg / kg or less, As is 3 mg / kg or less, Hg is 1 mg / kg or less, Cd is 1 mg / kg or less, Zn is 100 mg / kg or less, Ba is 50 mg / kg or less, Cr is 100 mg / kg or less, Cu is 50 mg / kg or less, and Ni is 200 mg / kg or less.

[0016] [3]

[0017] In X-ray diffraction measurements, the integrated intensity of the diffraction lines of the (311) plane of the spinel structure iron oxide appearing at a diffraction angle of 35.10° or more and 36.10° or less is 100.00, and the integrated intensity of the diffraction lines of the (104) plane of the corundum structure iron oxide appearing at a diffraction angle of 32.60° or more and 33.60° or less is 10.0 or less, the iron oxide pigment described in [1] or [2].

[0018] [4]

[0019] An iron oxide pigment described in any one of [1] to [3], having an average shortening length of primary particles of 50 nm or more and 500 nm or less.

[0020] [5]

[0021] BET specific surface area is 2.0 m² 2 / g or more 25.0 m 2 An iron oxide pigment described in any one of [1] to [4], having a volume density of 70 g / mL or less and a residue of 1.0 g / kg or less when passed through a sieve with a mesh size of 45 μm.

[0022] [6]

[0023] An iron oxide pigment described in any one of [1] to [5], having an oil absorption capacity of 20 g / 100 g or more and 50 g / 100 g or less.

[0024] [7]

[0025] A cosmetic composition containing an iron oxide pigment as described in any one of [1] to [6].

[0026] [8]

[0027] Cosmetic composition described in [7], which is a cosmetic for the skin.

[0028] [9]

[0029] A cosmetic composition described in [7] or [8], which is a liquid cosmetic.

[0030]

[10]

[0031] A cosmetic composition described in [7] or [8], which is a solid cosmetic.

[0032]

[11]

[0033] A cosmetic composition described in [7] or [8], which is a gel-like cosmetic.

[0034]

[12]

[0035] A cosmetic composition described in any one of [7] to

[11] used for the purpose of reproducing a dark color. Effects of the invention

[0036] When incorporated into a cosmetic composition, the iron oxide pigment of the present invention exhibits large a and / or b values ​​and saturation even in low lightness regions. Furthermore, it has high coloring power. Due to these characteristics, it can be said that it is particularly suitable for use as a coloring agent in skin cosmetics tailored for dark-colored skin. In addition, when incorporated into a cosmetic composition, the iron oxide pigment of the present invention possesses a smooth texture and usability that allows for easy application over a wide area.

[0037] In addition, the cosmetic composition obtained by incorporating the iron oxide pigment of the present invention has characteristics such as being easy to manufacture and having a low health risk to the user. Brief explanation of the drawing

[0038] Figure 1 shows the X-ray diffraction measurement results of an iron oxide pigment for the formulation of a cosmetic composition of the present invention. Figure 2 shows the relationship between the lightness and the a value of a cosmetic composition obtained according to the present invention. Figure 3 shows the relationship between the lightness and the b value of a cosmetic composition obtained according to the present invention. Figure 4 shows the relationship between lightness and saturation of a cosmetic composition obtained according to the present invention. Specific details for implementing the invention

[0039] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention must have an elemental Fe content of 680 g / kg or more and 702 g / kg or less. Additionally, the content of FeO must be 30 g / kg or less, the content of Fe2O3 must be 939 g / kg or more, and the total content of FeO and Fe2O3 must be 968 g / kg or more. In the present invention, in order to exhibit a brownish color with high saturation, it is necessary that the content of the elemental Fe, FeO, and Fe2O3 be within the above ranges. If the content of FeO is greater than 30 g / kg or the content of elemental Fe is greater than 702 g / kg, the cosmetic composition having the pigment will have a dark color with low saturation. In addition, if the content of Fe element in the pigment is less than 680 g / kg, if the content of Fe2O3 is less than 939 g / kg, or if the total content of FeO and Fe2O3 is less than 962 g / kg, the resulting cosmetic composition has a dull color tone and also has reduced saturation. More preferably, the content of Fe element is 680 g / kg or more and 701 g / kg or less, the content of FeO is 20 g / kg or less, the content of Fe2O3 is 950 g / kg or more, and the total content of FeO and Fe2O3 is 970 g / kg or more.

[0040] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention preferably has a spinel structure or has both a spinel structure and a corundum structure. When having both a spinel structure and a corundum structure, it is preferable that the intensity of the diffraction line originating from the corundum structure obtained when X-ray diffraction measurement is performed is small. Specifically, when the integrated intensity of the diffraction line of the (311) plane of the spinel structure iron oxide appearing at a diffraction angle of 35.10° or more and 36.10° or less is set to 100.00, it is preferable that the integrated intensity of the diffraction line of the (104) plane of the corundum structure iron oxide appearing at a diffraction angle of 32.60° or more and 33.60° or less is 10.0 or less. If the diffraction line intensity of the corundum structure is large, the brightness of the resulting cosmetic composition increases, making it difficult to achieve the desired color. More preferably, the integrated intensity of the diffraction lines originating from the corundum structure is 7.0 or less, and even more preferably 5.0 or less.

[0041] It is preferable that the iron oxide pigment to be incorporated into the cosmetic composition of the present invention has a low content of heavy metals. Specifically, it is preferable that the Pb contained in the pigment be 10 mg / kg or less, As be 3 mg / kg or less, Hg be 1 mg / kg or less, Cd be 1 mg / kg or less, Zn be 100 mg / kg or less, Ba be 50 mg / kg or less, Cr be 100 mg / kg or less, Cu be 50 mg / kg or less, and Ni be 200 mg / kg or less. By reducing the content of heavy metal oxides or salts, light scattering or absorption by oxides or salts can be suppressed, thereby preventing a decrease in color saturation. Furthermore, from the perspective of use as a cosmetic, it is desirable that the content of heavy metals be low. In particular, recently, consumers have been scrutinizing the safety of cosmetics strictly, and regulations on heavy metal content are being strengthened in many countries. By keeping the heavy metal content low, risks such as the review of sales plans accompanying stricter regulations or claims from consumers can be avoided. More preferably, the heavy metal content is such that Pb is 2 mg / kg or less, As is 2 mg / kg or less, Hg is 1 mg / kg or less, Cd is 1 mg / kg or less, Zn is 20 mg / kg or less, Ba is 5 mg / kg or less, Cr is 20 mg / kg or less, Cu is 10 mg / kg or less, and Ni is 5 mg / kg or less.

[0042] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention preferably has an average short axis length of primary particles of 50 nm or more and 500 nm or less. If the average short axis length is 50 nm or more, the saturation tends to increase, and if the average short axis length is 500 nm or less, the coloring power tends to increase. More preferably, the average short axis length is 100 nm or more and 350 nm or less, and even more preferably, it is 100 nm or more and 300 nm or less. In addition, the long axis length is not limited. The ratio of the average long axis length to the average short axis length is not particularly limited, but a ratio of about 1 to 200 is generally used.

[0043] The average short axis length and average long axis length of the primary particles of the iron oxide pigment can be obtained by, for example, using a transmission electron microscope to observe about 100 to 500 primary particles of the pigment and calculating the average value.

[0044] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention has a specific surface area measured by the BET method (hereinafter referred to as "BET specific surface area") of 2.0 m² 2 / g or more 25.0 m 2 It is desirable that it is / g or less. BET specific surface area is 2.0 m² 2 If it is greater than / g, the staining power tends to increase, and also, the BET specific surface area is 25.0 m² 2 If it is / g or less, the formation of aggregates is suppressed, making it easier to obtain a uniform texture. More preferably, the BET specific surface area is 3.0 m². 2 / g or more 20.0 m 2 / g or less, and more preferably 4.0 m 2 / g or more 15.0 m 2 / g or less, and even more preferably 5.0 m 2 / g or more 14.0 m 2 It is less than / g.

[0045] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention preferably has a bulk density of 70 g / mL or less. If the bulk density is 70 g / mL or less, the saturation is likely to increase. Preferably, the bulk density is 10 g / mL or more and 67 g / mL or less, more preferably 10 g / mL or more and 65 g / mL or less, and even more preferably 15 g / mL or more and 45 g / mL or less.

[0046] The bulk density can be measured by a method conforming to JIS K 5101-12-1, for example, as described in the section of the examples.

[0047] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention preferably has a residue of 1.0 g / kg or less when passed through a sieve with a mesh size of 45 μm. If the sieve residue is 1.0 g / kg or less, there are fewer lumps of pigment, making it easier to reduce the unpleasant stinging sensation when using the cosmetic composition. More preferably, the sieve residue is 0.5 g / kg or less, and even more preferably 0.3 g / kg or less.

[0048] The above sieve residue can be measured by a method conforming to JIS K 5101-14-1, for example, as described in the example column.

[0049] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention preferably has an oil absorption capacity of 20 g / 100 g or more and 50 g / 100 g or less. If the oil absorption capacity is 50 g / 100 g or less, the oiliness of the cosmetic composition is reduced, making it easier to reduce the unpleasant sensation caused by oiliness when using the cosmetic composition. In addition, if the oil absorption capacity is 20 g / 100 g or more, the cosmetic composition can suppress the removal of makeup by sebum. More preferably, it is 25 g / 100 g or more and 45 g / 100 g or less.

[0050] The amount of oil absorbed can be measured by a method conforming to JIS K 5101-13-2, for example, as described in the section of the examples.

[0051] The method for preparing an iron oxide pigment to be incorporated into the cosmetic composition of the present invention is not particularly limited. Generally, it can be prepared by a method of dehydrating and reducing yellow iron oxide and further oxidizing it, or by oxidizing black iron oxide.

[0052] Here, yellow iron oxide is composed of iron oxide called goethite, generally represented by the chemical formula α-FeOOH. Although there are differences depending on the observer or environment, it generally exhibits a color close to the yellow or yellow of the JIS common name. Black iron oxide is composed of iron oxide called magnetite, generally represented by the chemical formula Fe3O4. Although there are differences depending on the observer or environment, it generally exhibits a color close to the black of the JIS common name.

[0053] Yellow iron oxide or black iron oxide can be synthesized using known techniques. For example, yellow iron oxide can be produced by maintaining an aqueous solution of a divalent iron salt at a constant temperature in the range of 20°C to 65°C, neutralizing it with an alkali, oxidizing it with an oxygen-containing gas, and then stirring and aging it; mixing this with an aqueous solution of a divalent iron salt, adding an alkali to neutralize it, oxidizing it with an oxygen-containing gas, filtering, and drying. Additionally, black iron oxide can be produced by generating a precipitate of ferrous hydroxide through a neutralization reaction between an aqueous solution of a divalent iron salt and an alkali hydroxide, and then oxidizing it by blowing air while controlling the pH and temperature of the aqueous solution. In these manufacturing methods, the composition and particle size of the iron oxide particles obtained can be controlled by controlling the pH of the aqueous solution or the oxidation time.

[0054] When obtaining an iron oxide pigment to be incorporated into the cosmetic composition of the present invention from yellow iron oxide, it can be obtained by dehydrating, reducing, and further oxidizing. As an example, a method may be used in which yellow iron oxide is dehydrated, the product is reduced, and then oxidized. For example, although not limited thereto, an iron oxide pigment suitable for the present invention can be obtained by calcining yellow iron oxide in air at 200°C, calcining the product in a hydrogen atmosphere at 300°C, and then calcining it in air at 200°C. Calcination is generally performed using a kiln, and it is preferable to calcin while rotating the kiln. Furthermore, reduction is not limited to a hydrogen atmosphere; organic materials may be used, or other reducing gases may be used.

[0055] When obtaining an iron oxide pigment to be incorporated into the cosmetic composition of the present invention from black iron oxide, it can be obtained by oxidizing the black iron oxide. Specifically, an iron oxide pigment suitable for the present invention can be obtained by calcining black iron oxide in air. There are no limitations on the number of calcinations or the time, and calcination may be performed in multiple stages. Furthermore, the temperature may be changed during this process.

[0056] In addition, the oxidation of black iron oxide may be carried out in water. Specifically, this can be achieved by dispersing black iron oxide particles in water and then bringing them into contact with air or by adding an oxidizing agent. The method of bringing them into contact with air is not particularly limited, but blowing air into the reaction vessel is a common method. The oxidizing agent is not particularly limited, and hydrogen peroxide, for example, can be preferably used. The liquid temperature is not limited, but generally, a temperature of 60°C or higher is industrially desirable because the oxidation rate increases, and a temperature of 90°C or lower is also desirable in terms of safety because boiling does not occur.

[0057] The iron oxide pigment to be incorporated into the cosmetic composition of the present invention may be obtained by a method other than the above method. For example, the iron oxide pigment for the cosmetic composition of the present invention can be manufactured by referring to the method described in Japanese Patent Publication No. Hei 11-092148, which separates and recovers maghemite (γ-Fe2O3) by heating and oxidizing an iron material and then peeling the iron oxide off the iron material. In addition, the iron oxide pigment for the cosmetic composition of the present invention can be manufactured by referring to the method described in Japanese Patent Publication No. 2000-336496, which applies voltage to an electrolyte containing iron ions to oxidize a precipitated material and further heats it to obtain maghemite ultrafine particles. However, manufacturing methods that do not involve yellow iron oxide or black iron oxide generally require special equipment or environments, and tend to result in higher costs.

[0058] For iron oxide pigments to be incorporated into the cosmetic composition of the present invention, for example, to improve dispersion stability and durability in a dispersion medium when preparing the cosmetic composition, a coating layer of inorganic material, such as a hydrated oxide or oxide of a metal such as aluminum, silicon, zinc, titanium, zirconium, iron, cerium, and tin, may be added to at least a portion of the surface of the pigment particles. In addition, metal salts other than those mentioned above may be used as the inorganic coating. Furthermore, an organic coating layer may be added to at least a portion of the particle surface to perform surface modification, such as hydrophobic treatment. Examples of organic coatings include silicon compounds such as dimethylpolysiloxane and methylhydrogenpolysiloxane; coupling agents such as silane-based, aluminum-based, titanium-based, and zirconium-based compounds; fluorine compounds such as perfluoroalkyl phosphate compounds; hydrocarbons; lecithin; amino acids; polyethylene; wax; metal soaps; etc. These treatments may be performed in combination, and there is no particular restriction on the order of the treatments.

[0059] It is preferable that the iron oxide pigment to be incorporated into the cosmetic composition of the present invention be washed or purified after manufacturing, within the scope of common sense of a person manufacturing materials to be incorporated into the cosmetic composition. If impurities remain in the iron oxide pigment, there is a possibility that it may affect the function as a cosmetic.

[0060] The cosmetic composition of the present invention can be prepared by combining other materials necessary for the cosmetic composition with an iron oxide pigment having the above characteristics. The method of preparing the cosmetic composition is not particularly limited. For example, it can be prepared by mixing the iron oxide pigment with other components and forming it into a desired formulation, such as a liquid, solid, or gel form, as described below. For example, in the case of a solid cosmetic composition, drying, molding, etc., may be performed as necessary after mixing each component. The apparatus used for mixing, drying, molding, etc., is not particularly limited.

[0061] The cosmetic composition of the present invention preferably contains the iron oxide pigment of the present invention having the above characteristics in an amount of 0.1 g / kg or more and 500 g / kg or less. If the amount of iron oxide pigment is 500 g / kg or less, it prevents the cosmetic composition from having a powdery texture, making it easier to spread over a wide area. More preferably, it is 0.1 g / kg or more and 450 g / kg or less, even more preferably 0.1 g / kg or more and 400 g / kg or less, and even more preferably 0.1 g / kg or more and 300.0 g / kg or less.

[0062] The cosmetic composition of the present invention may use only the iron oxide pigment of the present invention as a coloring agent, or may adjust the color by adding other pigments within a quantitative and qualitative range that does not impair the effects of the present invention. Inorganic pigments that can be used in combination include titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, ultramarine, indigo, Bengala, cerium oxide, talc, muscovite, synthetic mica, phlogopite, biotite, synthetic fluorinated phlogopite, titanium mica, mica-like iron oxide, sericite, zeolite, kaolin, bentonite, clay, silica, anhydrous silica, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium sulfate, magnesium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, boron nitride, bismuth oxychloride, alumina, zirconium oxide, magnesium oxide, calamine, hydroxyapatite, and complexes thereof. Likewise, organic pigments that can be used in combination include silicone powder, silicone elastic powder, polyurethane powder, cellulose powder, nylon powder, urethane powder, silk powder, PMMA powder, starch, polyethylene powder, polystyrene powder, carbon black, tar dyes, natural dyes, metal soaps such as zinc stearate, and composites thereof. When a pigment other than the iron oxide pigment of the present invention is added to the cosmetic composition of the present invention, among the above, red iron oxide, yellow iron oxide, and / or black iron oxide are preferred as the pigment to be added from the view of preventing color separation.

[0063] In addition, red iron oxide is composed of iron oxide called hematite, which is generally represented by the chemical formula α-Fe2O3. Although there are differences depending on the observer or environment, it generally exhibits a color close to the red or red of the JIS common name.

[0064] In the cosmetic composition containing the iron oxide pigment of the present invention, other ingredients other than the pigment may be incorporated within a quantitative and qualitative range that does not impair the effects of the present invention, depending on the purpose. For example, one or more of oily ingredients, colorants, pH adjusters, moisturizers, thickeners, surfactants, dispersants, stabilizers, preservatives, antioxidants, metal chelators, astringents, anti-inflammatory agents, UV absorbers, fragrances, abrasives, etc., may be appropriately incorporated. In particular, it is desirable to incorporate plate-like compounds represented by mica, as this improves the slipperiness of the cosmetic composition.

[0065] (Uses of cosmetics)

[0066] The cosmetic composition containing the iron oxide pigment of the present invention exhibits large a and / or b values ​​and saturation even in low lightness areas, and also has high coloring power of the pigment, making it particularly suitable for use as a skin cosmetic tailored to dark colors. Even when used as a skin cosmetic tailored to dark colors, the cosmetic composition of the present invention can produce a healthy appearance with vivid color and give a natural impression. Furthermore, in this specification, "vividness" has the same meaning as "high saturation." In addition, it is possible to reproduce dark colors with a single pigment that could not be reproduced conventionally without mixing two or more types of iron oxide pigments, and in that case, it can be used as a skin cosmetic without color separation. Moreover, even when reproducing dark colors by mixing other pigments in addition to the pigment of the present invention, the type of other pigments mixed can be reduced due to the characteristic that the pigment of the present invention exhibits high saturation even in low lightness areas, and in that case, it can be made into a cosmetic composition that does not easily separate colors.

[0067] Furthermore, because the iron oxide pigment of the present invention has high coloring power, it is possible to obtain a cosmetic composition exhibiting a desired color tone with a smaller content than conventional pigments, thereby increasing the freedom of formulation. By incorporating a color tone adjuster, the iron oxide pigment of the present invention makes it possible to adjust subtle color tones even within dark colors, allowing for the expression of a wide range of colors. Additionally, the cosmetic composition of the present invention can be used as a skin cosmetic tailored to colors other than dark. By using the iron oxide pigment of the present invention, the cosmetic composition can be provided with a smooth texture and ease of application over a wide area.

[0068] Furthermore, "dark-colored skin" generally refers to skin with a dark or deep hue. While the impression given by a person's skin color is greatly influenced by the observer, environment, and psychological effects, this specification defines terms solely for the purpose of clarifying the scope of a preferred embodiment of the present invention. Therefore, skin exhibiting a color tone in which the value of L (lightness) in the Lab color space is 30 or less when reflected light is evaluated by a colorimeter is defined as "dark-colored skin." Additionally, the above numerical range has no social significance. Whether an individual's skin corresponds to dark-colored skin is by no means a basis for making any judgment about that individual.

[0069] The cosmetic composition of the present invention can be used as a cosmetic other than a cosmetic for the skin. The cosmetic composition of the present invention can be used as a substitute for brown-based cosmetic compositions that have been used in the past.

[0070] (Cosmetic formulation)

[0071] Liquid cosmetics are one of the embodiments of the cosmetic composition of the present invention. As a formulation, it may be in any state such as an aqueous dispersion, an oily dispersion, or a lotion, and may be, for example, makeup cosmetics such as a makeup base, control color, sunscreen, eyeshadow, eyeliner, mascara, cheek color, and nail polish, skin care cosmetics, hair care cosmetics, permanent hair dye, semi-permanent hair dye, primary hair dye, nail cosmetics, etc.

[0072] A solid cosmetic composition is one of the embodiments of the cosmetic composition of the present invention. The formulation may be in any state such as a powder, a powder solid, a paste, or an oily solid, and may be used as, for example, a makeup cosmetic, skin care cosmetic, hair care cosmetic, etc., such as a makeup base, foundation, loose powder, blush, concealer, eyebrow, face powder, control color, mascara, cheek color, body powder, pressed powder, perfume powder, baby powder, etc. Additionally, it may be used as a cosmetic that does not necessarily require the addition of color, such as a facial cleansing powder, soap, or powdered bath additive.

[0073] A gel-type cosmetic is one of the embodiments of the cosmetic composition of the present invention. The formulation may be in any state such as a cream, emulsion, oily liquid, or paste, and may be used as, for example, makeup cosmetics such as a makeup base, control color, sunscreen, lipstick, eyeshadow, eyeliner, mascara, lip cream, lip color, lip gloss, nail polish, skin care cosmetics, hair care cosmetics, etc. In addition, it may be used in cosmetics where adding color is not essential, for example, shampoo, conditioner, body shampoo, facial cleansing foam, peel-off pack, toothpaste, etc.

[0074] Examples

[0075] The present invention will be specifically described below by way of examples, but the following examples are merely for illustrative purposes and the scope of the invention is not limited by them.

[0076] In addition, in the mixing operations described in the examples and comparative examples, the rotation speed is appropriately adjusted to ensure that the entire mixture is uniformly mixed and that droplets do not scatter to the surroundings, taking into account properties related to the behavior during mixing, such as the amount or viscosity of the mixture and the volume of the device used. Also, in cases where the same effect can be obtained by using a product from any company that is a commercially available product, such as sodium hexametaphosphate, the names of the manufacturers and distributors are omitted.

[0077] [Example 1]

[0078] Yellow iron oxide (LL-100HP, manufactured by Titan Industry) synthesized by a known method was calcined in air at 380°C for 1 hour, the product was calcined in a hydrogen atmosphere at 320°C for 4.5 hours, additionally calcined in air at 250°C for 8 hours, and air-cooled to obtain iron oxide pigment A.

[0079] [Example 2]

[0080] Black iron oxide ABL-209HP (manufactured by Titan Industry), synthesized by a known method, was first calcined in air at 80°C for 4 hours, then calcined at 120°C for 4 hours, then calcined at 160°C for 4 hours, and finally calcined at 200°C for 4 hours, and air-cooled to obtain iron oxide pigment B.

[0081] [Example 3]

[0082] Iron oxide pigment C was obtained by performing the same operation as in Example 2 on black iron oxide BL-100HP (manufactured by Titan Industry) synthesized by the known method.

[0083] [Comparative Example 1]

[0084] 500 g / kg of commercially available yellow iron oxide LL-100HP (manufactured by Titan Industry, elemental Fe content 622 g / kg, FeO content 0 g / kg, Fe2O3 content 887 g / kg) and 500 g / kg of red iron oxide R-516HP (manufactured by Titan Industry, elemental Fe content 695 g / kg, FeO content 0 g / kg, Fe2O3 content 994 g / kg) were uniformly mixed to form mixed pigment 1. The elemental Fe content of the obtained mixed pigment 1 was 659 g / kg, the FeO content was 0 g / kg, and the Fe2O3 content was 941 g / kg.

[0085] [Comparative Example 2]

[0086] 750 g / kg of commercially available yellow iron oxide LL-100HP, 150 g / kg of red iron oxide R-516HP, and 100 g / kg of black iron oxide BL-100HP (manufactured by Titan Industry, elemental Fe content 707 g / kg, FeO content 220 g / kg, Fe2O3 content 780 g / kg) were uniformly mixed to form mixed pigment 2. The elemental Fe content of the obtained mixed pigment 2 was 641 g / kg, the FeO content was 22 g / kg, the Fe2O3 content was 892 g / kg, and the total content of FeO, Fe2O3, and FeO was 914 g / kg.

[0087] [Evaluation Items and Evaluation Methods]

[0088] The following items were evaluated for the iron oxide pigments of Examples 1 to 3 and the mixed pigments of the Comparative Example.

[0089] [Content of element Fe in iron oxide pigment]

[0090] It was evaluated according to the method based on JIS K 5109. 15 mL of hydrochloric acid was added to 0.3 g of a well-dried iron oxide pigment sample, and the mixture was heated to concentrate it to approximately 5 mL. While heating, a stannous chloride solution was quietly added dropwise; when the liquid became colorless, an additional 2 drops were added, and the mixture was rapidly cooled with running water. 10 mL of a saturated mercuric chloride solution was added and left for 5 minutes, then 20 mL of mixed acid was added, followed by pure water to make the liquid volume 50 mL. 5 drops of an aqueous sodium diphenylamine tetrasulfonate solution with a concentration of 2 g / kg were added, and the mixture was titrated with a 0.05 mol / L potassium dichromate solution, with the point at which the color changed from green to purple being the endpoint. If the amount of 0.05 mol / L potassium dichromate solution used is c (mL), the content of elemental Fe (g / kg) in the pigment is 18.62×c. The results are shown in Table 1.

[0091] [FeO content, Fe2O3 content]

[0092] It was evaluated using a method based on JIS K 5109.

[0093] 1) FeO content

[0094] 0.4 g of a well-dried iron oxide pigment sample was mixed with 35 mL of distilled water and 15 mL of concentrated sulfuric acid, heated to dissolve, and cooled to room temperature with running water. 150 mL of pure water, 10 mL of phosphoric acid, and 5 drops of an aqueous solution of sodium diphenylamine tetrasulfonate with a concentration of 2 g / kg were added, and the mixture was titrated with a 0.05 mol / L potassium dichromate solution, with the endpoint set as the point at which the color changed from pale green to purple. If the amount of 0.05 mol / L potassium dichromate solution used is denoted as a (mL), the FeO content (g / kg) in the pigment is 17.96 × a.

[0095] 2) Fe2O3 content

[0096] 15 mL of hydrochloric acid was added to 0.4 g of a well-dried iron oxide pigment sample, and the mixture was heated to concentrate the volume to approximately 5 mL. While heating, a tin(II) chloride solution was quietly added dropwise; when the liquid became colorless, an additional 2 drops were added, and the mixture was rapidly cooled with running water. 10 mL of a saturated mercuric chloride solution was added and left for 5 minutes, then 20 mL of mixed acid and pure water were added to bring the liquid volume to 120 mL. 5 drops of an aqueous sodium diphenylamine tetrasulfonate solution with a concentration of 2 g / kg were added, and the solution was titrated with a 0.05 mol / L potassium dichromate solution, with the endpoint set when the color changed from green to purple. If the amount of the 0.05 mol / L potassium dichromate solution used is denoted as b (mL), the Fe2O3 content (g / kg) is 19.96 × (ba). The results are shown in Table 1.

[0097] Pb, As, Hg, and Cd were analyzed by ICP-MS after dissolving the iron oxide pigment samples in sulfuric acid. Zn, Ba, Cr, Cu, and Ni were analyzed by ICP after dissolving the samples in hydrochloric acid. The results are shown in Table 2.

[0098] [Ratio of X-ray diffraction line intensities between corundum and spinel structures]

[0099] X-ray diffraction measurements were performed using the powder method with the RINT-TTR III X-ray diffraction apparatus manufactured by Rigaku Co., Ltd. After grinding the iron oxide pigment sample in a mortar and pestle, it was packed into a cell in an amount of approximately 0.7 g ± 0.2 g. The onset angle was 5.0000°, the end angle was 70.0000°, the sampling width was 0.0100°, the scan speed was 5.0000° / min, the diverging slit was 0.5°, the scattering slit was 0.5°, the receiving slit width was 0.15 mm, and the characteristic X-ray was set to 0.15418 nm using copper as the cathode. The obtained X-ray diffraction pattern was smoothed, background processed, and peak detected using the analysis software MDI JADE7 manufactured by Material Data Co., Ltd. The results of the X-ray diffraction measurements are shown in Figure 1. The ratio of the integrated intensity of the diffraction lines of the corundum structure appearing in the range from 32.60° to 33.60° was calculated when the integrated intensity of the diffraction lines of the spinel structure appearing in the range from 35.10° to 36.10° was set to 100.00 (in this specification, this ratio is also referred to as the “ratio of X-ray diffraction line intensities of the corundum structure and the spinel structure”). In addition, if no peak was detected in the range from 32.60° to 33.60°, it was set to 0.00. The results are shown in Table 3.

[0100] [Average short length of primary particles of iron oxide pigment]

[0101] Measurements were taken using a transmission electron microscope (JEM-1400plus) manufactured by Nihon Electronics. The observation magnification was set to 30,000x (10,000x observation magnification of the transmission electron microscope × 3x printing magnification). The short axis lengths of approximately 300 primary particles within the field of view were evaluated using the image analysis software ImageJ. The average value of the short axis lengths of the approximately 300 particles was calculated and taken as the average short axis length. The results are shown in Table 3.

[0102] [BET Specific Surface Area]

[0103] Measurements were performed using the BET single-point method with a Gemini VII2390 manufactured by MICROMETORITICS. The results are shown in Table 3.

[0104] [Volume Density]

[0105] The evaluation was performed according to the method based on JIS K 5101-12-1. A funnel and a sieve with a mesh size of 45 μm were placed on a funnel holder equipped with a powder tester manufactured by Hosokawa Micron. A sample of iron oxide pigment equivalent to one tablespoon with a volume of 15 mL was placed on the sieve, and the sample was dispersed and dropped evenly across the entire surface of the sieve using a stiff-bristle brush, and collected in a tray under the funnel holder. This operation was repeated until the sample piled high in the tray. Next, the peaks were scraped off with a spatula, and the mass of the contents in the tray was weighed. If the mass of the contents is denoted as d (g), the bulk density (g / mL) is d / 30. The results are shown in Table 3.

[0106] [Sieve residue]

[0107] Evaluation was performed according to the method based on JIS K 5101-14-1. 1.00 g of the iron oxide pigment sample was dispersed in a 0.5 g / kg aqueous solution of sodium hexametaphosphate and passed through a sieve with a mesh size of 45 μm. The sieve was washed with a small amount of flowing water, additionally washed with a small amount of ethanol, dried at 105 ℃ for 1 hour, and the mass of the sample remaining on the sieve was measured to calculate the proportion of the sample remaining on the sieve. The results are shown in Table 3.

[0108] [Oil absorption]

[0109] 2 g of the iron oxide pigment sample was spread on a glass plate, and small amounts of boiled linseed oil were dropped onto the center of the sample. Each time, the entire sample was mixed with a spatula to knead the sample and the boiled linseed oil. The endpoint was set at the point when the entire sample became a uniform putty-like mass. If the amount of boiled linseed oil used is e (mL), the oil absorption amount (g / 100 g) is 46.75 × e. The results are shown in Table 3.

[0110] [a value, b value and saturation]

[0111] For iron oxide pigments A to C and mixed pigment 1, 250 g / kg of each pigment was substituted with black iron oxide BL-100HP to prepare a powder with reduced lightness. Archidia (registered trademark) 4250 manufactured by DIC Co., Ltd. (834 g / kg), xylene (156 g / kg), and butane-2-one=oxime (10 g / kg) were mixed to form Solvent 1. 0.5 g of each powder was placed on the bottom plate of a Huber Muller manufactured by Toyo Seiki Seisakusho Co., Ltd., 1 mL of Solvent 1 was added dropwise, and a load of 667 N was applied to knead until the entire mixture became a uniform paste. Additionally, 2 mL of Solvent 1 was added and mixed. The obtained slurry was applied to a test paper and left undisturbed for 30 minutes. Afterward, it was baked in air at 130°C for 30 minutes, and the L, a, and b values ​​of the baked film were measured using a Suga Testing Machinery SM-7 type color tester (hereinafter referred to as the "color tester"). The L, a, and b values ​​were measured in the same manner for pigments in which 500 g / kg and 750 g / kg of each pigment were substituted with black iron oxide. The obtained results are shown in Figures 2 and 3. If the obtained a and b values ​​are denoted as a1 and b1, respectively, the chroma C is calculated using the following formula:

[0112]

[0113] The obtained results are shown in Fig. 4.

[0114] [Coloring Power]

[0115] For iron oxide pigments A to C and mixed pigment 2, 0.125 g of each pigment was mixed with 0.375 g of titanium oxide to prepare a mixed powder. Meanwhile, 834 g / kg of Archidia (registered trademark) 4250 manufactured by DIC Co., Ltd., 156 g / kg of xylene, and 10 g / kg of butane-2-one=oxime were mixed to make Solvent 1. 0.5 g of each powder was placed on the bottom plate of a Huber Muller manufactured by Toyo Seiki Seisakusho Co., Ltd., 1 mL of Solvent 1 was added dropwise, and a load of 667 N was applied to knead until the entire mixture became a uniform paste. Additionally, 2 mL of Solvent 1 was added and mixed. The obtained slurry was applied to a test paper and left undisturbed for 30 minutes. Afterward, it was baked in air at 130°C for 30 minutes, and the L, a, and b values ​​of the baked film were measured using a color tester. The color difference ΔE between the measured L, a, and b values ​​and white (L = 100, a = 0, b = 0) was defined as the coloring power. If the measured L, a, and b values ​​are denoted as L2, a2, and b2, respectively, the coloring power ΔE is calculated using the following formula:

[0116]

[0117] The results are shown in Table 4.

[0118]

[0119]

[0120]

[0121]

[0122] From FIG. 1, it can be seen that the iron oxide pigments of Examples 1 to 3 have a spinel structure or have a spinel structure and a corundum structure. Also, from FIG. 2 and FIG. 3, it can be seen that iron oxide pigment A of Example 1 has a larger b value compared to mixed pigment 1 of Comparative Example 1 when compared at the same lightness (L value). Such iron oxide pigments have the advantage of being easy to mix yellow-based colors, especially in the low lightness range. Also, it can be seen that iron oxide pigments B and C of Examples 2 and 3 both have larger a and b values ​​compared to mixed pigment 1. Such iron oxide pigments have the advantage of being easy to mix a wide range of colors in the low lightness range. Additionally, from FIG. 4, it can be seen that the iron oxide pigment used in one of the examples also exhibits greater saturation compared to mixed pigment 1 when compared at the same lightness (L value).

[0123] From the above results, it can be seen that the iron oxide pigment of the present invention has high a and / or b values ​​in the low lightness region, high saturation, and high coloring power. A cosmetic composition incorporating the iron oxide pigment of the present invention can be said to be suitable for use as a skin cosmetic tailored to dark colors.

[0124] Cosmetic compositions for the skin are one of the main aspects of the present invention. Examples of formulations are shown below.

[0125] [Prescription Example]

[0126] Formula 1 Light Beige Powder Foundation

[0127] Ingredient mixing ratio (g / kg)

[0128] (1) Iron oxide pigment A 9.4

[0129] (2) Black iron oxide pigment (BL-100HP manufactured by Titan Industry; in the following formulation examples, BL-100HP is used as the black iron oxide) 0.6

[0130] (3) Mica (Topi Industrial Manufacturing PDM-1000) 490

[0131] (4) Talc (Asada Flour Milling Co., Ltd. JA-46R) 300

[0132] (5) Titanium oxide (C-50R manufactured by Ishihara Sangyo Co., Ltd.) 100

[0133] (6) Emulsion {mixture of Crodaran SWL (manufactured by Croda Corporation), Phytosqualane (manufactured by Iwase Cospa Co., Ltd.), ODO (manufactured by Nissin Oilio Group Co., Ltd.), TIO (manufactured by Nissin Oilio Group Co., Ltd.), and KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.) in a ratio of 4:4:3:3:6} 100

[0134] (quite)

[0135] (1) and (2) were manually mixed in advance, and the mixed pigments (3) to (6) were uniformly mixed using a Mitsui Miike Chemical Engineering FM-10B (hereinafter referred to as "Henschel Mixer"). The mixture was ground with a hammer mill, filled into a mold, and compression molded to obtain the desired light beige powder foundation. The obtained light beige powder foundation had a smooth texture. Importantly, it provided a healthy appearance with vivid color while also having a natural finish.

[0136] Formula 2 Beige Brown Powder Foundation

[0137] Ingredient mixing ratio (g / kg)

[0138] (1) Iron oxide pigment B 248

[0139] (2) Black iron oxide 16

[0140] (3) Mica (Topi Industrial Manufacturing PDM-1000) 264

[0141] (4) Sericite 352

[0142] (5) Dimethicone 120

[0143] (quite)

[0144] (1) and (2) were mixed manually in advance, and the mixed pigment and (3) to (5) were uniformly mixed using a Henschel mixer. The mixture was ground with a hammer mill, filled into a mold, and compression molded to obtain the desired beige-brown powder foundation. The obtained beige-brown powder foundation had a smooth texture. Importantly, it provided a natural finish while giving a healthy appearance with vivid color.

[0145] Formula 3 Dark Brown Powder Foundation

[0146] Ingredient mixing ratio (g / kg)

[0147] (1) Iron oxide pigment C 300

[0148] (2) 300 black iron oxide

[0149] (3) Mica (Topi Industrial Manufacturing PDM-1000) 300

[0150] (4) Emulsion {mixture of Crodaran SWL (manufactured by Croda Corporation), Phytosqualane (manufactured by Iwase Cospa Co., Ltd.), ODO (manufactured by Nissin Oilio Group Co., Ltd.), TIO (manufactured by Nissin Oilio Group Co., Ltd.), and KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.) in a ratio of 4:4:3:3:6} 100

[0151] (quite)

[0152] (1) and (2) were mixed manually in advance, and the mixed pigment was uniformly mixed with (3) and (4) using a Henschel mixer. The mixture was ground with a hammer mill, filled into a mold, and compression molded to obtain the desired dark brown powder foundation. The obtained dark brown powder foundation had a smooth texture. Importantly, it provided a natural finish while giving a healthy appearance with vivid color.

[0153] Prescription 4 Stick Foundation

[0154] Ingredient mixing ratio (g / kg)

[0155] (1) Cyclopentasiloxane 300

[0156] (2) Ethylhexyl methoxycinnamate 50

[0157] (3) Diisostearyl malate 40

[0158] (4) Candelilla wax 60

[0159] (5) Hydrogenated jojoba ester 40

[0160] (6) Cetyldimethicone copolyol 20

[0161] (7) Sorbitan sesquiisostearate 5

[0162] (8) Hydrogendimethicone-treated iron oxide pigment A 25

[0163] (9) Hydrogendimethicone-treated titanium oxide 83

[0164] (10) Hydrogendimethicone treated talc 60

[0165] (11) Methyl methacrylate crosspolymer (M-305 manufactured by Matsumoto Yuji Pharmaceutical) 40

[0166] (12) Residual purified water

[0167] (13) Sodium citrate 3

[0168] (14) Propanediol 30

[0169] (15) Glycerin 20

[0170] (quite)

[0171] The powder parts (8) to (11) were mixed in advance using a Henschel mixer. The oil phase parts (1) to (7) were weighed into a container capable of holding the total amount and heated to melt. The aqueous phase parts (12) to (15) were weighed into another container and heated to melt. The powder part was added to the oil phase to disperse it uniformly, the aqueous phase was added to emulsify it, and after degassing, the bulk was poured into a mold and slowly cooled to room temperature to obtain the desired stick foundation. The obtained stick foundation had excellent adhesion and a clean feel. Importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0172] Formula 5 W / O Emulsion Foundation

[0173] Ingredient mixing ratio (g / kg)

[0174] (1) PEG-10 dimethicone 20

[0175] (2) Polyricinoleic acid polyglyceryl-10 5

[0176] (3) Neopentyl glycol dicapric acid 30

[0177] (4) Squalane 10

[0178] (5) Pentaerythrityl tetraoctanoate 20

[0179] (6) Inulin stearate 10

[0180] (7) Ethylhexyl methoxycinnamate 40

[0181] (8) Cyclopentasiloxane residue

[0182] (9) Hydrogendimethicone-treated titanium oxide 77

[0183] (10) Hydrogendimethicone treated talc 57

[0184] (11) Hydrogendimethicone-treated iron oxide pigment C 27

[0185] (12) 380g purified water

[0186] (13) 1,3-butylene glycol 60

[0187] (14) Glycerin 10

[0188] (15) Sodium chloride 10

[0189] (16) Phenoxyethanol 5

[0190] (quite)

[0191] Powdered parts (9) to (11), which had been mixed by stirring with a Henschel mixer beforehand, were added to oil phases (1) to (8) and uniformly dispersed using a stirrer. Water phases (12) to (16) were heated and melted in another container. Water phases were added to the oil phases in which the powdered parts were dispersed, emulsified, and then cooled to room temperature to obtain the desired W / O emulsion foundation. The obtained W / O emulsion foundation had good spreadability and a clean feel. Importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0192] Formula 6 O / W Emulsion Foundation

[0193] Ingredient mixing ratio (g / kg)

[0194] (1) Stearic acid 10

[0195] (2) Isostearic acid 3

[0196] (3) Cetyl ethylhexanoate 40

[0197] (4) Liquid paraffin 70cs 110

[0198] (5) Steares-10 20

[0199] (6) Cetyl alcohol 15

[0200] (7) 50 triethoxycaprylsilane-treated talc

[0201] (8) Triethoxycaprylsilane-treated iron oxide pigment A 27

[0202] (9) Triethoxycaprylsilane-treated titanium oxide 75

[0203] (10) Triethanolamine 12

[0204] (11) Propanediol 50

[0205] (12) Xanthan Gum 2

[0206] (13) Residual purified water

[0207] (14) Phenoxyethanol 5

[0208] (quite)

[0209] Mixed and ground (7) to (9) were added to (1) to (6) heated and melted at 85°C and uniformly dispersed. Mixtures (10) to (14) heated to 85°C were slowly added to this to perform emulsification, and after stirring and cooling to room temperature, the mixture was filled into a suitable container to obtain the desired O / W emulsion foundation. The obtained O / W emulsion foundation had good spreadability and a clean feel. Importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0210] Prescription 7 2-Way Cake Foundation

[0211] Ingredient mixing ratio (g / kg)

[0212] (1) Dimethicone processed talc residue

[0213] (2) Dimethicone-treated titanium oxide 100

[0214] (3) Dimethicone-treated mica 200

[0215] (4) Dimethicone-treated sericite 360

[0216] (5) 100g nylon powder

[0217] (6) Dimethicon-treated red iron oxide (Titan Industry manufactured R-516HP; in the following formulations as well, red iron oxide used is R-516HP) 2

[0218] (7) Dimethicone-treated iron oxide pigment B 27

[0219] (8) Dimethicone 1000cs 60

[0220] (9) Isotridecyl isononanate 30

[0221] (10) Squalane 30

[0222] (11) Tocopherol 1

[0223] (12) 1,3-butylene glycol 10

[0224] (quite)

[0225] (1) to (7) were mixed with a Henschel mixer, and (8) to (12) that had been heated and melted were mixed into the mixture. Then, the mixture was crushed with an atomizer and press-molded into an aluminum plate to obtain the desired 2-way foundation. The obtained 2-way foundation had a smooth and fresh feel. Importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0226] Prescription 8 Oil-based Cake Foundation

[0227] Ingredient mixing ratio (g / kg)

[0228] (1) Dimethicone processed talc residue

[0229] (2) Dimethicone-treated titanium oxide 130

[0230] (3) Dimethicone-treated sericite 280

[0231] (4) Dimethicone-treated iron oxide pigment A 27

[0232] (5) Dimethicone-treated black iron oxide 1

[0233] (6) Candelilla lead 10

[0234] (7) Carnauba lead 10

[0235] (8) Ceresin 15

[0236] (9) Cyclopentasiloxane 140

[0237] (10) Isononil isononil acid 250

[0238] (11) Polyglyceryl diisostearate 20

[0239] (12) Ethylhexyl methoxycinnamate 30

[0240] (quite)

[0241] The powder parts (1) to (5) were mixed with a Henschel mixer and uniformly ground. The oil phase parts (6) to (12) were heated and melted, and the powder part was added and uniformly stirred. After degassing, the bulk was poured into a tray and cooled slowly to room temperature to obtain the desired oil-based cake foundation. The obtained oil-based cake foundation had no oily shine and had a smooth feel. Importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0242] Prescription 9 Blusher

[0243] Ingredient mixing ratio (g / kg)

[0244] (1) 250 talc treated with triethoxycaprylsilane

[0245] (2) Triethoxycaprylsilane-treated sericite residue

[0246] (3) Stearic acid-treated fine titanium oxide (STV-455 manufactured by Titanium Industry) 30

[0247] (4) Triethoxycaprylsilane-treated titanium oxide 18

[0248] (5) Triethoxycaprylsilane-treated black iron oxide 0.5

[0249] (6) Triethoxycaprylsilane-treated red iron oxide 2

[0250] (7) Triethoxycaprylsilane-treated iron oxide pigment B 8

[0251] (8) Ethylhexyl methoxycinnamate 30

[0252] (9) Ethylhexyl palmitate 50

[0253] (10) Appropriate amount of preservative

[0254] (11) An appropriate amount of antioxidant

[0255] (quite)

[0256] (1) to (7) were mixed with a Henschel mixer, and (8) to (11) that had been heated and melted were mixed into the mixture, and then ground with an atomizer. This was press-molded into an aluminum plate to obtain the desired blusher. The obtained blusher had excellent usability. And importantly, it gave the user a healthy appearance with vivid color while providing a natural finish.

[0257] Prescription 10 Loose Powder

[0258] Ingredient mixing ratio (g / kg)

[0259] (1) Talc residue

[0260] (2) Pigment-grade titanium oxide 10

[0261] (3) Amihof (Registered Trademark) LL 30

[0262] (4) PMMA (Matsumoto Microsphere S-100, 10 µm product manufactured by Matsumoto Yuji Pharmaceutical Co., Ltd.) 80

[0263] (5) Appropriate amount of preservative

[0264] (6) Iron oxide pigment B 10

[0265] (7) Squalane 10

[0266] (8) Appropriate amount of preservative

[0267] (9) Appropriate amount of antioxidant

[0268] (10) Appropriate amount of flavoring

[0269] (quite)

[0270] After mixing and grinding (1) to (7), the mixture was transferred to a LAB.MIXER LM-110T manufactured by HANIL Electric.Co., Lid, and (8) to (10) were added and stirred to make it uniform. The resulting mixture was ground using a sample mill TASM-1 manufactured by Tokyo Atomizer Manufacturer and filled to obtain loose powder. The resulting loose powder gave the user a healthy appearance with vivid color while having a natural finish.

[0271] Cosmetic compositions in liquid form are also one of the embodiments of the present invention. Examples of formulations are shown below.

[0272] Prescription 11 Water-based Eyeliner

[0273] Ingredient mixing ratio (g / kg)

[0274] (1) 50 black iron oxide

[0275] (2) Iron oxide pigment C 25

[0276] (3) Residual purified water

[0277] (4) Decaglyceryl lauric acid 10

[0278] (5) 60 glycerin

[0279] (6) 100 g / kg aqueous solution of carboxymethylcellulose 180

[0280] (7) Phenoxyethanol 5

[0281] (8) Pentylene glycol 10

[0282] (9) Vinyl acetate resin emulsion (Vinibran (registered trademark) GV-5651 manufactured by Nissin Chemical Industry) 450

[0283] (quite)

[0284] (1) to (3) were weighed, and (1) and (2) were finely dispersed in (3) using a bead mill. (4) to (8) were weighed in another container, and the pigment part was added at 70°C and dispersed uniformly, then cooled to room temperature and (9) was added to obtain the desired water-based eyeliner. The obtained water-based eyeliner had a vivid brown color and excellent usability.

[0285] Prescription 12 Nail Enamel

[0286] Ingredient mixing ratio (g / kg)

[0287] (1) Nitrocellulose (viscosity 1 / 2 sec) 100

[0288] (2) Modified alkyd resin 100

[0289] (3) Acetyl tributyl citric acid 50

[0290] (4) Ethyl acetate 200

[0291] (5) 50 ethanol

[0292] (6) Toluene residue

[0293] (7) Iron oxide pigment A 90

[0294] (8) Organic modified montmorillonite 30

[0295] (quite)

[0296] (7) was mixed with a portion of (2) and (3) and kneaded well. The remainder of (2) and (3), (1), (4) to (6) and (8) were added to this, and mixed until uniform to obtain the desired nail enamel. The obtained nail enamel exhibited a vivid color and excellent opacity.

[0297] Prescription Example 13 1st hair dye

[0298] Ingredient mixing ratio (g / kg)

[0299] (1) Iron oxide particles A 50

[0300] (2) Red No. 202 10

[0301] (3) Polyvinyl alcohol 500 5

[0302] (4) Triethanolamine 6

[0303] (5) Ethyl acetate residue

[0304] (quite)

[0305] (3) to (5) were stirred with a Henschel mixer, and when the ingredients became uniform, (1) and (2) were added and further stirred until the whole mixture became uniform to obtain the desired first hair dye. The obtained first hair dye had a vivid brown color and was not stiff.

[0306] Cosmetic compositions in a solid form are also one of the embodiments of the present invention. Examples of formulations are shown below.

[0307] Prescription Example 14 Press-type eyeshadow

[0308] Ingredient mixing ratio (g / kg)

[0309] (1) Iron oxide pigment C 270

[0310] (2) Sericite residue

[0311] (3) Talc 149

[0312] (4) Titanium mica (Manufactured by BASF: Flamenco Super Pearl 120C) 200

[0313] (5) Methylparaben 1

[0314] (6) Dimethicone 1000cs 70

[0315] (7) Diisostearyl malate 30

[0316] (8) A suitable amount of isopropyl alcohol

[0317] (quite)

[0318] (1) to (5) were mixed and ground. Then, (6) and (7) mixed in another container were added and stirred to make them uniform. The adjusted mixture was dispersed in (8) to achieve a suitable viscosity, and this was compressed and filled into a suitable gold dish using a slurry filler. It was dried at 40°C for 12 hours to obtain the desired press-type eyeshadow. The obtained product exhibited vivid color, excellent adhesion, and a smooth feel when used.

[0319] Prescription 15 Eyebrow Pencil

[0320] Ingredient mixing ratio (g / kg)

[0321] (1) Black iron oxide 160

[0322] (2) Iron oxide pigment C 25

[0323] (3) Titanium oxide 45

[0324] (4) Talc residue

[0325] (5) 150 kaolin

[0326] (6) 200 wood wax

[0327] (7) 100% stearic acid

[0328] (8) 50 beeswax

[0329] (9) 50g hardened castor oil

[0330] (10) 30 Vaseline

[0331] (11) Lanolin 30

[0332] (12) Squalane 30

[0333] (13) Appropriate amount of preservative

[0334] (14) An appropriate amount of antioxidant

[0335] (quite)

[0336] Mixed and ground (1) to (5) were added to heated and melted (6) to (14), uniformly kneaded using a three-roll mill, formed into a core, and fitted into a wooden frame to form a pencil shape, thereby obtaining the desired eyebrow pencil. The obtained eyebrow pencil exhibited vivid color and had a smooth feel when used.

[0337] Formula 16 Pressed Eyebrow

[0338] Ingredient mixing ratio (g / kg)

[0339] (1) Titanium oxide 140

[0340] (2) Black iron oxide 140

[0341] (3) Iron oxide pigment C 25

[0342] (4) County Office 5

[0343] (5) My car remaining

[0344] (6) Talc 100

[0345] (7) 100g Lanolin Wax

[0346] (8) Liquid paraffin 40

[0347] (9) Glycerin stearate 10

[0348] (10) Appropriate amount of preservative

[0349] (11) An appropriate amount of antioxidant

[0350] (quite)

[0351] Mixed and ground (1) to (6) were mixed with heated and melted (7) to (11) until uniform, and then compression molded to obtain the desired pressed eyebrow. The obtained pressed eyebrow exhibited vivid color and excellent colorability.

[0352] Formula 17 Pressed Powder

[0353] Ingredient mixing ratio (g / kg)

[0354] (1) Hydrogendimethicone-treated talc residue

[0355] (2) Methyl methacrylate crosspolymer (M-305 manufactured by Matsumoto Yuji Pharmaceutical) 100

[0356] (3) Hydrogendimethicone-treated sericite 500

[0357] (4) Silica (AGC SI Tech manufactured Sunspear (registered trademark) NP-30) 60

[0358] (5) Hydrogendimethicone-treated titanium oxide 55

[0359] (6) Hydrogendimethicone-treated black iron oxide 0.5

[0360] (7) Hydrogendimethicone-treated red iron oxide 0.5

[0361] (8) Hydrogen dimethicone treated iron oxide pigment B 10

[0362] (9) Ethylhexyl methoxycinnamate 30

[0363] (10) Squalane 20

[0364] (11) Appropriate amount of preservative

[0365] (12) A suitable amount of antioxidant

[0366] (quite)

[0367] The powder parts (1) to (8) were mixed and ground, transferred to a Henschel mixer, and the oil phase parts (9) to (12) were added and stirred and mixed to become uniform. Then, the mixture was ground using an atomizer. This was press-molded into an aluminum plate to obtain the desired pressed powder. The obtained pressed powder exhibited a vivid color, excellent adhesion, and a cleaner feel when used.

[0368] Cosmetic compositions in the form of a gel are also one of the embodiments of the present invention. Examples of formulations are shown below.

[0369] Prescription 18 Cream Eyeshadow

[0370] Ingredient mixing ratio (g / kg)

[0371] (1) Talc 100

[0372] (2) Kaolin 50

[0373] (3) Iron oxide pigment C 45

[0374] (4) 30% stearic acid

[0375] (5) Isopropyl myristate 80

[0376] (6) Liquid paraffin 70cs 50

[0377] (7) Propylene glycol lauric acid 30

[0378] (8) 0.5 tocopherol

[0379] (9) Residual purified water

[0380] (10) 50g concentrated glycerin

[0381] (11) 1,3-butylene glycol 10

[0382] (12) Methylparaben 2

[0383] (13) Triethanolamine 12

[0384] (14) EDTA-3Na 0.5

[0385] (quite)

[0386] Mixed and ground (1) to (3) were added to (9) to (15) and stirred and mixed. To this, (4) to (8) that had been heated and melted at 70°C to 80°C were added to emulsify, and the mixture was stirred and cooled to obtain the desired cream eyeshadow. The obtained cream eyeshadow exhibited vivid color and had excellent adhesion with smooth application.

[0387] Prescription 19 Oil-based Eyeliner

[0388] Ingredient mixing ratio (g / kg)

[0389] (1) Dextrin isostearic acid (Mikufilma (Registered Trademark) HVY, manufactured by Chiba Milling) 50

[0390] (2) Microcrystalline wax 50

[0391] (3) 100g dextrin palmitate

[0392] (4) Diisostearyl malate 100

[0393] (5) Isododecane residue

[0394] (6) Dimethicone-treated black iron oxide 245

[0395] (7) Dimethicone-treated iron oxide pigment B 25

[0396] (8) My car 200

[0397] (quite)

[0398] (1) to (5) were weighed and heated and mixed until uniform. Additionally, the mixed and ground (6) to (8) were added and heated and mixed until uniform, then cooled to 40°C, filled into a suitable container, and cooled to room temperature to obtain the desired oil-based eyeliner. The obtained oil-based eyeliner exhibited vivid color and excellent spreadability.

[0399] Formula 20 Emulsion Mascara

[0400] Ingredient mixing ratio (g / kg)

[0401] (1) Residual purified water

[0402] (2) Polyvinylpyrrolidone 20

[0403] (3) Propanediol 20

[0404] (4) 100% aqueous solution of cationic cellulose

[0405] (5) Bentonite 5

[0406] (6) Triethanolamine 17

[0407] (7) Methylparaben 2

[0408] (8) Talc 40

[0409] (9) Black iron oxide 90

[0410] (10) Iron oxide pigment C 25

[0411] (11) Carnauba wax 55

[0412] (12) Beeswax 90

[0413] (13) Stearic acid 20

[0414] (14) Self-emulsifying glyceryl stearate 20

[0415] (15) Propylene glycol stearate 20

[0416] (16) Hydrogenated polyisobutene 20

[0417] (17) Cyclopentasiloxane 40

[0418] (18) Acrylic acid resin emulsion (Daito Chemical Industry, Daitosol (registered trademark) 5000AD) 200

[0419] (quite)

[0420] (1) to (7) were mixed with (8) to (10) by stirring in a Henschel mixer beforehand, and then uniformly dispersed with a stirrer. (11) to (17) were added to the mixture to emulsify it, then cooled to 40°C, (18) was added, and then cooled to room temperature to obtain the desired emulsion mascara. The obtained emulsion mascara had a vivid color and excellent usability.

[0421] Prescription 21 Oil-based Mascara

[0422] Ingredient mixing ratio (g / kg)

[0423] (1) Hydrogenated polyisobutene 20

[0424] (2) Isododecane residue

[0425] (3) 50 dextrin isostearic acid

[0426] (4) 150 dextrin palmitate

[0427] (5) Microcrystalline wax 20

[0428] (6) Polyethylene wax 30

[0429] (7) Propylparaben 1

[0430] (8) Talc 60

[0431] (9) Black iron oxide 55

[0432] (10) Iron oxide pigment B 10

[0433] (11) Dimethylsilylated silica 5

[0434] (12) Nylon fiber (Cosmetic manufacturing 5D-8MM) 10

[0435] (quite)

[0436] In the heated and melted (1) to (7), the pre-mixed and ground (8) to (10) and (11) were mixed. After cooling, (12) was uniformly dispersed to obtain an oil-based mascara. The obtained oil-based mascara exhibited vivid color and had excellent adhesion and usability.

[0437] Prescription 22 Lipstick

[0438] Ingredient mixing ratio (g / kg)

[0439] (1) Ceresin 100

[0440] (2) Microcrystalline wax 32

[0441] (3) 50 paraffin

[0442] (4) Pentaerythrityl tetraisosteariate 200

[0443] (5) Diisostearyl malate 150

[0444] (6) Hydrogenated polydecene 100

[0445] (7) 100g Vaseline

[0446] (8) Triisostearate polyglyceryl-2 residue

[0447] (9) Simethicone 1

[0448] (10) Propylparaben 1

[0449] (11) Red No. 202 4

[0450] (12) Iron oxide pigment A 18

[0451] (13) Titanium oxide 3

[0452] (14) Silica 10

[0453] (quite)

[0454] (1) to (14) were weighed and heated and mixed. After uniformly dispersing with a 3-bone roll, the mixture was further heated and uniformly stirred. After degassing, the heated mixture was poured into a mold and rapidly cooled. It was mounted in a suitable container to obtain the desired lipstick. The obtained lipstick exhibited a unique color with a vivid reddish tint.

[0455] Prescription 23 Lip Color

[0456] Ingredient mixing ratio (g / kg)

[0457] (1) (palmitic acid / ethylhexanoic acid)dextrin 50

[0458] (2) Pentaerythrityl tetraisosteariate 120

[0459] (3) Hydrogenated polydecene 100

[0460] (4) Triisostearate polyglyceryl-2 residue

[0461] (5) Hydrogenated pentaerythrityl rosinate 100

[0462] (6) Octyldodecyl isostearate 100

[0463] (7) (behenic acid / eicosanic acid)glyceryl 20

[0464] (8) Dimethylsilylated silica 10

[0465] (9) Propylparaben 1

[0466] (10) Hydrogenated polyisobutene 350

[0467] (11) Silicon-treated iron oxide pigment B 10

[0468] (12) Red No. 202 4

[0469] (quite)

[0470] (1) to (12) were heated and mixed until uniform. After degassing, the mixture was filled into a suitable container and cooled to room temperature to obtain the desired lip color. The obtained lip color exhibited a unique shade with a vivid reddish tint.

[0471] Prescription 24 Lip Gloss

[0472] Ingredient mixing ratio (g / kg)

[0473] (1) 100 dextrin palmitate

[0474] (2) Diisostearyl malate 450

[0475] (3) Liquid paraffin residue

[0476] (4) Preservative 1

[0477] (5) Antioxidant 1

[0478] (6) Iron oxide pigment A 5

[0479] (7) Red No. 202 1

[0480] (quite)

[0481] (1) to (5) were heated to 85°C to dissolve them uniformly, and (6) to (7) were added and dispersed uniformly. The mixture was filled into a container at high temperature and rapidly cooled to room temperature to obtain the desired lip gloss. The obtained lip gloss exhibited a unique color tone with a vivid red tint.

[0482] Washing the face or wiping away dirt from the body, and using it as toothpaste are also modes of use of the cosmetic composition of the present invention.

[0483] Prescription 25 Body Shampoo

[0484] Ingredient mixing ratio (g / kg)

[0485] (1) 115 lauric acid

[0486] (2) Myristic acid 77

[0487] (3) Palmitic acid 48

[0488] (4) Potassium hydroxide (purity 480 g / kg) 122

[0489] (5) Lauryl hydroxysulfo betaine 100

[0490] (6) Cocamidomonoethanolamide 10

[0491] (7) Ethylene glycol distearate 20

[0492] (8) Residual purified water

[0493] (9) EDTA-4Na 1

[0494] (10) Iron oxide pigment B 10

[0495] (11) Talc 4

[0496] (quite)

[0497] (1) to (3) were heated to 70°C to 80°C and dissolved. Then, (4) was slowly added to carry out saponification. When saponification was finished, the remaining (5) to (9) were added and stirred until homogeneous. Cooled to 40°C, mixed and ground (10) and (11) were added to this, and the mixture was cooled to room temperature while stirring to obtain the desired body shampoo. The obtained body shampoo exhibited a vivid brown color.

[0498] Prescription 26 Facial Cleansing Foam

[0499] Ingredient mixing ratio (g / kg)

[0500] (1) 170 stearic acid

[0501] (2) Myristic acid 70

[0502] (3) 30 lauric acid

[0503] (4) Potassium hydroxide (purity 480 g / kg) 120

[0504] (5) Diisostearic acid PEG-60 Glyceryl 30

[0505] (6) Glyceryl stearate 20

[0506] (7) 80 sorbitol

[0507] (8) PEG1500 100

[0508] (9) Cocamidopropyl Betaine 50

[0509] (10) 180 glycerin

[0510] (11) EDTA-4Na 1

[0511] (12) Residual purified water

[0512] (13) Pentylene glycol 15

[0513] (14) Iron oxide pigment C 3

[0514] (15) Talc 6

[0515] (quite)

[0516] (1) to (3) were heated to 70°C to 80°C and dissolved. Then, (4) was slowly added to carry out saponification. When saponification was finished, the remaining (5) to (13) were added and stirred until uniform. Cooled to 40°C, mixed and ground (14) and (15) were added to this, and the mixture was cooled to room temperature while stirring to obtain the desired facial cleansing foam. The obtained facial cleansing foam exhibited a vivid brown color.

[0517] Prescription 27 Facial Cleansing Powder

[0518] Ingredient mixing ratio (g / kg)

[0519] (1) Iron oxide pigment A3

[0520] (2) Talc 200

[0521] (3) 50 lauric acid

[0522] (4) Mannitol residue

[0523] (5) Potassium myristate 300

[0524] (6) Glucose 100

[0525] (7) Potassium myristoyl glutamate 20

[0526] (8) Sodium cocoylmethyltaurine 30

[0527] (9) Betaine 10

[0528] (10) Tanakura Clay (Registered Trademark) 50

[0529] (11) Guar hydroxypropyltrimonium chloride 5

[0530] (12) Pentylene glycol 10

[0531] (quite)

[0532] (1) to (12) were uniformly mixed using a Henschel mixer to obtain the desired facial cleansing powder. The obtained facial cleansing powder exhibited a vivid brown color.

[0533] Prescription 28 solid soap

[0534] Ingredient mixing ratio (g / kg)

[0535] (1) Fatty acid alkali metal salt 945

[0536] (Lauric acid 380 g / kg, myristic acid 370 g / kg, palmitic acid 150 g / kg, stearic acid 100 g / kg)

[0537] (Potassium : Sodium = 1 : 5)

[0538] (2) Cocamidopropyl Betaine 30

[0539] (3) 20 glycerin

[0540] (4) Iron oxide pigment A 5

[0541] (quite)

[0542] (1) was heated and melted, (2) to (4) were added and mixed, and further homogenized using three rolls. Subsequently, the obtained mixture was kneaded and pressurized with an extruder to be extruded into a rod shape, and then molded with a molding machine to obtain the desired solid soap. The obtained solid soap exhibited a vivid brown color.

[0543] Prescription 29 Powdered Bath Additive

[0544] Ingredient mixing ratio (g / kg)

[0545] (1) Sodium sulfate 860

[0546] (2) Residual sodium bicarbonate

[0547] (3) Sodium glutamate 20

[0548] (4) Silica (manufactured by AGC SI Tech, Sunspear (registered trademark) H-52) 10

[0549] (5) Iron oxide pigment A 5

[0550] (6) Vanillyl butyl ether 2

[0551] (7) Chili extract 1

[0552] (quite)

[0553] (1) to (7) were uniformly mixed using a Henschel mixer to obtain the desired powdered bath product. When the obtained powdered bath product was used, the bathtub exhibited a vivid brown color.

[0554] Prescription 30 Peel-Off Pack

[0555] Ingredient mixing ratio (g / kg)

[0556] (1) PEG1500 80

[0557] (2) PEG / PPG-25 / 30 copolymer 60

[0558] (3) Xanthan Gum 2

[0559] (4) Sodium citrate 3

[0560] (5) Citric acid 1

[0561] (6) Residual purified water

[0562] (7) 100g polyvinyl alcohol

[0563] (8) Polysorbate-80 2

[0564] (9) Silica (AGC SI Tech manufactured Sunspear (registered trademark) H-51) 40

[0565] (10) Talc 80

[0566] (11) Iron oxide pigment C 10

[0567] (12) Alkyl acrylate copolymer emulsion 50

[0568] (13) Methylparaben 2

[0569] (14) 80 ethanol

[0570] (quite)

[0571] Mixed and ground (9) to (11) were added to heated and melted (1) to (8), uniformly dispersed, and then cooled to 40°C. Subsequently, (12) to (14) were added and stirred and cooled to room temperature to prepare the desired peel-off pack. The obtained peel-off pack exhibited a unique vivid color.

[0572] Prescription 31 toothpaste

[0573] Ingredient mixing ratio (g / kg)

[0574] (1) Calcium carbonate 290

[0575] (2) Iron oxide pigment A 5

[0576] (3) Red No. 202 5

[0577] (4) Sorbitol liquid 35

[0578] (5) Glycerin 35

[0579] (6) 30 guar gum

[0580] (7) 600g distilled water

[0581] (quite)

[0582] (1) to (3) were weighed and added to (7), and stirred for 5 minutes using a special equipment manufacturer's ROBOMICS fMODEL. (4) to (6) were added while stirring, and stirring was stopped when the viscosity of the mixture increased. The resulting toothpaste had a vivid color and possessed sufficient viscosity to be placed in a tube and sufficient fluidity for the abrasive to enter the gaps between teeth.

Claims

Claim 1 An iron oxide pigment for cosmetic compositions having a spinel structure or a spinel structure and a corundum structure, wherein the content of Fe element is 680 g / kg or more and 702 g / kg or less, the content of FeO is 30 g / kg or less, the content of Fe2O3 is 939 g / kg or more, and the total content of FeO and Fe2O3 is 968 g / kg or more. Claim 2 An iron oxide pigment according to claim 1, wherein Pb is 10 mg / kg or less, As is 3 mg / kg or less, Hg is 1 mg / kg or less, Cd is 1 mg / kg or less, Zn is 100 mg / kg or less, Ba is 50 mg / kg or less, Cr is 100 mg / kg or less, Cu is 50 mg / kg or less, and Ni is 200 mg / kg or less. Claim 3 In claim 1, an iron oxide pigment in which, when the integrated intensity of the diffraction line of the (311) plane of the spinel structure iron oxide appearing at a diffraction angle of 35.10° or more and 36.10° or less is set to 100.00, the integrated intensity of the diffraction line of the (104) plane of the corundum structure iron oxide appearing at a diffraction angle of 32.60° or more and 33.60° or less is 10.0 or less. Claim 4 An iron oxide pigment according to any one of claims 1 to 3, wherein the average shorten length of the primary particles is 50 nm or more and 500 nm or less. Claim 5 In any one of claims 1 to 3, the BET specific surface area is 2.0 m² 2 / g or more 25.0 m 2 An iron oxide pigment having a density of 1.0 g / kg or less, a bulk density of 70 g / mL or less, and a residue of 1.0 g / kg or less when passed through a sieve with a mesh size of 45 μm. Claim 6 An iron oxide pigment according to any one of claims 1 to 3, having an oil absorption capacity of 20 g / 100 g or more and 50 g / 100 g or less. Claim 7 A cosmetic composition containing an iron oxide pigment described in any one of claims 1 to 3. Claim 8 In claim 7, a cosmetic composition that is a cosmetic for the skin. Claim 9 In claim 7, a cosmetic composition that is a liquid cosmetic. Claim 10 In claim 7, a cosmetic composition that is a solid cosmetic. Claim 11 In claim 7, a cosmetic composition that is a gel-like cosmetic. Claim 12 A cosmetic composition used for the purpose of reproducing a dark color, according to claim 7.

Images