Powder cosmetics

Abstract

The objective of the present invention is to provide a powder cosmetic composition with excellent resistance to sebum. [Solution] A powder cosmetic containing (A) 50-90% by mass of porous silica and (B) 10-32% by mass of non-volatile oil.

Description

Technical Field

[0001] The present invention relates to powder cosmetics.

Background Art

[0002] Powder cosmetics are preferred in order to correct uneven skin color, spots, etc. and impart a uniform and beautiful skin appearance, and / or to absorb sebum and sweat to improve the durability of makeup and prevent makeup collapse, and / or to suppress a thick coating feeling and achieve a natural finish.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] One of the functions desired in cosmetics is sebum resistance. The purpose of the present application is to provide a powder cosmetic with high sebum resistance.

Means for Solving the Problems

[0005] As a result of intensive studies to solve the above problems, the present inventors have found that a powder cosmetic excellent in sebum resistance can be obtained by using a predetermined amount of porous silica and a non-volatile oil, and have completed the present invention.

[0006] The present invention relates to, but is not limited to, the following [Invention 1] to [Invention 5]. [Invention 1] (A) 50 to 90% by mass of porous silica, and (B) 10 to 32% by mass of a non-volatile oil A powder cosmetic containing the same. [Invention 2] The powder cosmetic according to Invention 1, containing silicone oil as the non-volatile oil. [Invention 3] The powder cosmetic composition according to Invention 1, wherein the content of luminous powder or plate-like extender pigment is 0 to 10% by mass. [Invention 4] The powder cosmetic composition according to Invention 1, wherein the content of water and volatile organic solvents is 0 to 2.0% by mass. [Invention 5] The powder cosmetic composition according to Invention 1, wherein the surfactant content is 0 to 2.0% by mass. [Invention 6] A powder cosmetic composition according to any one of inventions 1 to 5, wherein the form is loose powder. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide powder cosmetics, particularly loose powder cosmetics, that have excellent resistance to sebum. [Modes for carrying out the invention]

[0008] While various alternative forms of the present invention are possible, this specification details specific embodiments of the invention. However, the detail of specific embodiments described herein is not intended to limit the invention to specific embodiments, and the invention encompasses all alternative forms that fall within the true spirit and scope of the invention as defined in the claims. In this specification, the terms “greater than or equal to” and “less than or equal to” used with numerical values ​​can be understood not only as a range of values ​​that include the numerical value, but also as a range of values ​​that do not include the numerical value; in other words, these terms can be interpreted as “greater than” and “less than,” respectively. Similarly, expressions that enclose two numerical values ​​with the symbol “~” may mean a range of values ​​that include both numbers, or a range of values ​​that do not include one or both of the numbers.

[0009] Powder cosmetics Powder cosmetics refer to cosmetics in powder form, and are further classified into loose powder and pressed powder (solid powder cosmetics) based on their shape. Loose powder is a type of powder cosmetic designed for excellent dispersibility and even application to the skin. It is commonly used as a face powder and also as an eye makeup powder. Pressed powder is a powdered cosmetic product that has been compressed into a solid form, making it convenient to carry and use. It is commonly used as a face powder and also as an eye makeup powder.

[0010] The powder cosmetic composition of the present invention contains porous silica and a non-volatile oil.

[0011] Porous silica The powder cosmetic of the present invention contains porous silica. Porous silica refers to silica having numerous pores on its surface and inside. Typically, the porous silica is in powder form, and its shape is not particularly limited, but it is preferably spherical. Its specific surface area is also not particularly limited, but it is preferably 150 to 1000 m² / g, and 200 m² / g. 2 / g or more, 250m 2 / g or more, or 300m 2 It is also acceptable to have a value of / g or more, 900m 2 / g or less, 800m 2 / g or less, or 700m 2 It may be less than / g. In this specification, specific surface area means BET specific surface area and is measured in accordance with JIS Z 8830:2001. Preferred porous silica includes, for example, Sunsphere® H-31, H-32, H-33, H-51, H-52, H-53, H-121, H-122, H-201, L-31, L-51, D-200L, and D-300L.

[0012] In this specification, "spherical" is a concept that the particle shape is not limited to a perfect sphere and includes substantially spherical ones. That is, the ratio of the longest axis length to the shortest axis length (aspect ratio) of the particles may generally be in the range of 1 to 4 on average, preferably in the range of 1 to 2, 1 to 1.6, or 1 to 1.4. The aspect ratio can be calculated, for example, as the number average of the aspect ratios of the selected particles by arbitrarily selecting 50 particles from a micrograph obtained by an optical microscope or an electron microscope and measuring the longest axis and the shortest axis of each.

[0013] The median particle size (D50) of the porous silica used in the present invention is usually in the range of 1.0 to 300 μm, preferably in the range of 1.0 to 100 μm, 2.0 to 50 μm, or 3.0 to 30 μm. Here, the average particle size (D50) means the median diameter measured by the laser diffraction method in accordance with JIS R 1629, and can be measured, for example, using a laser diffraction / scattering particle size distribution measuring device.

[0014] The content of the porous silica (when multiple are contained, the total amount; the same shall apply hereinafter) is 50% by mass or more based on the total amount of the cosmetic, and may be 55% by mass or more, 60% by mass or more, or 65% by mass or more. Also, the content may be 90% by mass or less, 85% by mass or less, 80% by mass or less, 75% by mass or less, or 70% by mass or less.

[0015] Non-volatile oil The powdery cosmetic of the present invention contains a non-volatile oil. In the present application, "non-volatile oil" means an oil with low volatility under normal pressure, preferably a hydrocarbon oil, an ester oil, and a silicone oil having a melting point of 20 °C or lower and a boiling point of 260 °C or higher under normal pressure. The non-volatile oil contained in the powdery cosmetic of the present invention is not particularly limited as long as it is acceptable in cosmetics. Examples thereof include, but are not limited to, the following substances: Linear or branched hydrocarbon oils such as mineral oil, petrolatum, and squalane; Glyceryl tri(caprylate / caprate), triethylhexanoin, paramethoxy Ester oils such as ethylhexyl caffeate, olive oil, jojoba seed oil, etc.; Silicone oils such as dimethylpolysiloxane (dimethicone), dimethiconol, etc.; Fluorine oils such as fluoropolyethers; Liposoluble phenolic compounds such as tocopherol; In one aspect, the powdered cosmetic of the present invention contains silicone oil as the non-volatile oil. In another aspect, the powdered cosmetic of the present invention contains dimethicone as the non-volatile oil.

[0016] The content of the non-volatile oil (when a plurality are contained, the total amount thereof; the same applies hereinafter) is 10% by mass or more with respect to the total amount of the cosmetic, and may be 15% by mass or more or 20% by mass or more. Also, the content may be 32% by mass or less, 30% by mass or less, 27% by mass or less, 25% by mass or less, or 20% by mass or less.

[0017] In one aspect, the powdered cosmetic of the present invention contains 10% by mass or more, or 15% by mass of silicone oil as the non-volatile oil. In another aspect, the powdered cosmetic of the present invention contains 10% by mass or more, or 15% by mass of dimethicone as the non-volatile oil.

[0018] The total amount of porous silica and non-volatile oil is not particularly limited as long as each content satisfies the requirements of the present invention, but is preferably 55% by mass or more, 60% by mass or more, 65% by mass or more, 70% by mass or more, 75% by mass or more, 80% by mass or more, or 85% by mass or more with respect to the total amount of the cosmetic. Also, the total amount is preferably 98% by mass or less, 96% by mass or less, or 90% by mass or less.

[0019] The ratio of the content of porous silica to the content of non-volatile oil is not particularly limited, but is preferably 1.6 or more, 1.7 or more, 1.8 or more, 1.9 or more, 2.0 or more, 2.3 or more, 2.5 or more, or 3.0 or more. Also, the ratio is preferably 9.0 or less, 7.0 or less, 5.0 or less, 4.0 or less, or 3.5 or less.

[0020] Additive Examples of additives include texture modifiers, pigments, water, organic solvents, surfactants, volatile oils, fibers, thickeners such as dimethylstearylammonium hectorite, gelling agents such as dextrin palmitate, anti-caking agents, emulsifiers, dispersants, stabilizers, humectants, viscosity modifiers such as propylene carbonate, solidifying agents such as beeswax and ceresin, binders, bulking agents such as talc, opacifiers, lubricants, UV scattering agents, UV absorbing agents, pH adjusters, antioxidants, antibacterial agents, preservatives, skincare agents, lubricants, astringents, emollients, polishing agents, glossing agents, defoaming agents, water-repellent coating agents such as trimethylsiloxysilicate, and protective agents. However, there are no particular restrictions as long as the types and amounts are permissible under the regulations for powder cosmetics. Additives with two or more overlapping uses or effects may be included.

[0021] Below, we will discuss some of the above components in more detail.

[0022] Feel-improved powder In one embodiment, the powder cosmetic composition of the present invention contains 0 to 30% by mass of a texture-improving powder. Texture-improving powders refer to powders that give a smooth, dry feel when cosmetics are applied to the skin, and in this specification, porous silica is excluded. Examples of texture-improving powders are: Silicone-based powders such as dimethicone crosspolymer, (dimethicone / vinyl dimethicone) crosspolymer, and silicone elastomers; Organic powders such as nylon-12, polymethyl (meth)acrylate, polyethylene, and spherical cellulose powder; Fluorine-based powders such as polytetrafluoroethylene These are some examples.

[0023] In this specification, the descriptions of content, "0 to xx% by mass" or "xx% by mass or less," mean that a certain component is not present or is present in a quantity greater than 0% but less than or equal to xx% by mass.

[0024] The content of the texture-improving powder is preferably 0-20% by mass, 0-15% by mass, or 4.0-15% by mass.

[0025] Luminous powder or plate-like pigment In one embodiment, the powder cosmetic composition of the present invention contains 0 to 10% by mass of a luminous powder or a plate-like extender pigment. Luminous powders refer to powders that reflect light and give a shine, and examples include titanium oxide coated mica (titanium mica), iron oxide coated mica (pearl red, pearl gold, etc.), glass flakes, alumina flakes, and metal powders (aluminum powder, copper powder, etc.). Plate-like pigments are powders (pigments) that have little to no coloring power but are added to supplement volume or surface properties. Examples include mica, sericite, synthetic fluorophlogopite (synthetic mica), talc, kaolin, and boron nitride.

[0026] The content of the luminous powder or plate-like extender pigment is preferably 0-10% by mass, 0-5.0% by mass, 0-3.0% by mass, 0-2.0% by mass, 0-1.0% by mass, or 0-0.50% by mass.

[0027] Volatile oils In one embodiment, the powder cosmetic composition of the present invention contains 0 to 2.0% by mass of volatile oil. Preferably, it is 0 to 1.0% by mass, 0 to 0.50% by mass, 0 to 0.10% by mass, or 0 to 0.050% by mass. In this specification, volatile oil means hydrocarbon oil or silicone oil having a boiling point of 60°C or higher and less than 260°C at atmospheric pressure.

[0028] surfactants In one embodiment, the powder cosmetic composition of the present invention contains 0 to 2.0% by mass of a surfactant. Preferably, it is 0 to 1.0% by mass, 0 to 0.50% by mass, 0 to 0.10% by mass, or 0 to 0.050% by mass.

[0029] Water or volatile organic solvent In one embodiment, the powder cosmetic composition of the present invention contains 0 to 2.0% by mass of water or a volatile organic solvent. Preferably, it is 0 to 1.0% by mass, 0 to 0.50% by mass, 0 to 0.10% by mass, or 0 to 0.050% by mass. When both water and a volatile organic solvent are contained, it is preferable that their total amount be within the above numerical range. When two or more volatile organic solvents are contained, it is preferable that the total amount of both (including water if it is also contained) be within the above numerical range. When both a volatile oil and a volatile organic solvent other than a volatile oil are contained, it is preferable that the total amount of both (including water if it is also contained) be within the above numerical range.

[0030] The powder cosmetic composition of the present invention can be applied to all kinds of powder cosmetics, such as powder foundation, face powder, body powder, blush, eye color, and powder eyebrow. Furthermore, there are no restrictions on the manufacturing method or filling method.

[0031] The powder cosmetic composition of the present invention may be in the form of either loose powder or pressed powder, but is preferably loose powder.

[0032] In one embodiment, the powder cosmetic composition of the present invention exhibits excellent resistance to sebum. Sebum resistance can be evaluated, for example, by the amount of artificial sebum absorbed, and can be evaluated using the evaluation method shown in the examples. An oil absorption amount of 40g or more per 100g of sample is preferred, 50g or more is more preferred, 60g or more is even more preferred, and 70g or more is particularly preferred.

[0033] In one embodiment, the powder cosmetic composition of the present invention exhibits excellent "smoothness." "Smoothness" refers to the dry, light, smooth, and non-sticky feeling experienced when applied to or touched on the skin. For example, this can be evaluated by the method described in the examples below.

[0034] In one embodiment, the powder cosmetic composition of the present invention is excellent in its lack of dryness. "Dryness" refers to the feeling of tightness or dryness that occurs when moisture and oil are removed from the skin after application. For example, this can be evaluated by the method described in the examples below.

[0035] In one embodiment, the powder cosmetic composition of the present invention is excellent in its lack of a "gritty" feeling. "Gritty" refers to the sensation of the powder rubbing against the skin surface when applied, resulting in poor glide and a feeling of tightness. For example, this can be evaluated by the method described in the examples below.

[0036] In one embodiment, the powder cosmetic composition of the present invention exhibits excellent spreadability. "Spreadability" refers to the property of the powder spreading evenly and smoothly when applied to the skin. For example, this can be evaluated by the method described in the examples below.

[0037] Manufacturing method The powder cosmetic composition of the present invention can be manufactured according to conventional formulations in accordance with the common technical knowledge of those skilled in the art. The method and order of blending each component are arbitrary and in accordance with the common technical knowledge of those skilled in the art. [Examples]

[0038] The present invention will be further described below with specific examples, but the present invention is not limited to these. Unless otherwise specified, the amounts are given in mass percent. The test methods used in the present invention are as follows.

[0039] Examples 1 to 16 of the powder cosmetic composition were manufactured according to the manufacturing method described below, using the formulations shown in Table 1. The formulation amounts are shown in mass percent. Examples 1 to 14 are examples of the present invention, and Examples 15 to 16 are comparative examples.

[0040] Manufacturing method The raw materials for component X were mixed in a Henschel mixer, the raw materials for component Y were added to this mixture, and the mixture was further mixed and ground. This mixture was then filled into a container to obtain a loose powder.

[0041] The manufactured powder cosmetics were evaluated. The evaluation results are shown in the table.

[0042] Formation of loose powder Three experts skilled in the art observed the sample's appearance with the naked eye and reached a unified conclusion that it was in the form of a loose powder (a fine, free-flowing powder).

[0043] Sebum resistance As an indicator of sebum resistance, the oil absorption capacity of artificial sebum (20% by mass of oleic acid, 40% by mass of squalane, and 40% by mass of triethylhexanoin) was used. The oil absorption capacity was determined by referring to JIS K 5101-13-1 (Pigment Test Methods - Part 13: Oil Absorption Capacity - Section 1: Refined Linseed Oil Method) and expressed as mass (g) per 100g of sample.

[0044] Smooth and silky feel Three experts in the art evaluated the smoothness of the sample when it was used, using the following five-point scale. 5. Very good 4. Good 3. Normal 2. Bad 1. Very bad Next, the final evaluation of the sample was determined based on the sum of the evaluation scores from the three individuals and the evaluation criteria described below. ◎ 12 points or more 〇 9 points or more but less than 12 points △ 6 points or more but less than 9 points × Less than 6 points

[0045] feeling of dryness Similarly, three persons skilled in the art judged the lack of dryness when using the sample, evaluating it on a 5-point scale. The final evaluation of the sample was determined based on the total score and the evaluation criteria described above.

[0046] Squeaky feeling Similarly, three persons skilled in the art judged the absence of a squeaky feeling when using the sample, evaluating it on a 5-point scale. The final evaluation of the sample was determined based on the total score and the evaluation criteria described above.

[0047] stretch Similarly, the elongation of the sample when used was judged by three persons skilled in the art and evaluated on a 5-point scale. The final evaluation of the sample was determined based on the total score and the evaluation criteria described above.

[0048] [Table 1]

[0049] From this table, for example, the following can be said, but the present invention is not limited thereto. Examples containing 50% or more by mass of porous silica and 32% or less by mass of non-volatile oil (such as Example 11) differed from Example 15 in that they had the form of loose powder. Examples containing 30% by mass or less of non-volatile oil (e.g., Example 11) had the form of a loose powder and exhibited superior sebum resistance compared to Example 3. Examples containing 27% by mass or less of non-volatile oil (e.g., Example 8) had the form of a loose powder and exhibited superior sebum resistance compared to Example 11. The embodiments of the present invention (e.g., Example 14) exhibited superior sebum resistance compared to Example 16, which contained talc (TALCLEAR LH) instead of porous silica (Sunsphere H-121, Sunsphere H-51). Example 6, which contained 10% or more by mass of non-volatile oil, was superior in several performance aspects compared to Example 14, which did not contain such oil. Example 5, which contains 15% by mass of KF-96A-6T (dimethicone) as a non-volatile oil, was superior in terms of lack of dryness compared to Examples 1, 2, and 4, which contain the same amount of other non-volatile oils. Example 12, which contains 20% by mass of KF-96A-6T as a non-volatile oil, was superior in terms of lack of dryness compared to Example 10, which contains the same amount of CARNATION (mineral oil). Powder cosmetics containing 15% by mass or more of KF-96A-6T (dimethicone) as a non-volatile oil (Examples 5 and 6, etc.) were superior to Example 8, which contained 10% by mass of KF-96A-6T, in terms of smoothness and lack of a squeaky feeling. [Industrial applicability]

[0050] The powder cosmetic composition of the present invention is useful as a powder foundation, face powder, eye makeup cosmetic, hair powder, etc., and can be widely used in the cosmetics industry.

Claims

1. (A) 50 to 90% by mass of porous silica, and (B) 10-32% by mass of non-volatile oil Powder cosmetics containing [ingredient].

2. The powder cosmetic composition according to claim 1, further comprising silicone oil as the non-volatile oil.

3. The powder cosmetic composition according to claim 1, wherein the content of luminous powder or plate-like extender pigment is 0 to 10% by mass.

4. The powder cosmetic composition according to claim 1, wherein the content of water and volatile organic solvents is 0 to 2.0% by mass.

5. The powder cosmetic composition according to claim 1, wherein the surfactant content is 0 to 2.0% by mass.

6. A powder cosmetic composition according to any one of claims 1 to 5, wherein the form is loose powder.

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