cosmetics

Abstract

To provide cosmetics that have reduced stickiness in use feeling while being free of plastic and feature a good feeling in use.SOLUTION: Cosmetics comprising the following (A)-(C): (A) niacin amide; (B) metal oxide fine particles; and (C) one or more selected from spherical silica, spherical cellulose, and spherical borosilicate particles.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cosmetic preparation. [Background technology]

[0002] Skin develops age spots, wrinkles, sagging, pigmentation, and other conditions due to internal factors such as aging and stress, as well as external factors such as ultraviolet rays and dry air. In particular, morphological changes such as wrinkles and sagging significantly affect the skin's appearance, and many people desire to improve these changes. Many drugs have been proposed to prevent and improve these conditions. Among these, niacinamide is known to be highly safe and to have anti-aging effects for skin (see, for example, Patent Documents 1 and 2). However, it is known that products containing large amounts of niacinamide have undesirable textures, such as a sticky feeling, and although efforts have been made to improve these conditions (see, for example, Patent Document 3), they have not yet achieved fully satisfactory results. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-130135 [Patent Document 2] Japanese Patent Application Publication No. 10-001414 [Patent Document 3] Special Publication No. 2003-502435 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a cosmetic that is plastic-free and yet has improved stickiness in use, and has a good feel in use. [Means for solving the problem]

[0005] The present invention provides the following cosmetic preparation. (1) A cosmetic preparation containing the following (A) to (C): (A) Niacinamide (B) Particulate metal oxide (C) One or more selected from spherical silica, spherical cellulose, and spherical borosilicate particles (2) 2. The cosmetic preparation according to claim 1, further comprising (D) panthenol. [Effects of the Invention]

[0006] The cosmetic of the present invention is plastic-free, yet has improved stickiness during use and exhibits the effect of providing a good feel during use. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, an embodiment of the present invention will be described.

[0008] [Niacinamide] Niacinamide used in the present invention is a water-soluble vitamin belonging to the vitamin B group, and is also called nicotinamide.

[0009] The niacinamide used in the present invention is not particularly limited in terms of raw materials, production method, purification method, etc., as long as it is one that is normally used in cosmetics.

[0010] The amount of niacinamide blended into the cosmetic of the present invention is 0.001 to 20% by mass, preferably 0.01 to 15% by mass, and more preferably 0.1 to 10% by mass, based on the total amount of the cosmetic.

[0011] [Fine particle metal oxide] In the present invention, microparticles refer to particles having an average particle diameter in the range of approximately 10 nm to 200 nm. The average particle diameter is a volume-based average particle diameter and can be measured using a laser diffraction / scattering particle size distribution analyzer. Examples of microparticle metal oxides that can be incorporated into the cosmetic of the present invention include microparticle titanium oxide, microparticle zinc oxide, microparticle zirconium oxide, and microparticle cerium oxide. Because of their excellent ultraviolet scattering effect, one or two types selected from microparticle titanium oxide and microparticle zinc oxide are preferred, with microparticle zinc oxide being particularly preferred due to its excellent UVA blocking effect. Furthermore, the shape of the microparticle metal oxide is not particularly limited, and it may be treated to be hydrophilic or hydrophobic.

[0012] The fine titanium dioxide particles can be any type that is commonly used in cosmetics. There are no particular limitations on the shape of the fine titanium dioxide particles. Furthermore, the particle size of the fine titanium dioxide particles is preferably, for example, an average primary particle size of 100 nm or less, more preferably 80 nm or less. The lower limit of the average particle size of the fine titanium dioxide particles is not particularly limited, but is usually about 30 nm. The fine titanium dioxide particles can be produced by standard methods such as the sulfuric acid method or the chlorine method, and commercially available products can also be used. Examples of commercially available fine titanium dioxide particles include the SIV series, TTO-55 series, and TTO-S series (all manufactured by Ishihara Sangyo Kaisha), as well as MT-100TV, MT-500V, and MT-01 (all manufactured by Teika Corporation).

[0013] Titanium dioxide microparticles can be used after its surface is hydrophilized or hydrophobized as required.Hydrophilic treatment means can be exemplified by surface treatment such as polyhydric alcohol treatment (e.g., glycerin), hyaluronic acid treatment, etc.In addition, hydrophobic treatment means can be exemplified by surface treatment such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, urethane resin treatment, fatty acid treatment, etc.

[0014] Although fine particle titanium dioxide and / or surface-treated fine particle titanium dioxide can be blended directly into cosmetics, if necessary, they can be used after being coated on the surface of other powders such as talc, mica, sericite, and other plate-like powders, silica, spherical powders, etc. By coating plate-like or spherical powders with fine particle titanium dioxide, the aggregation of the fine particle titanium dioxide is reduced, resulting in a high UV protection effect. Furthermore, by coating plate-like or spherical powders with fine particle titanium dioxide, the rough feeling that is characteristic of fine particle titanium dioxide in use is reduced, resulting in a cosmetic product with a good feel in use.

[0015] The fine particle titanium dioxide and / or its surface-treated fine particle titanium dioxide can be blended directly into cosmetics as a powder, but it can also be used after being dispersed in advance in an oil such as silicone oil or hydrocarbon oil, or in an aqueous component.

[0016] The fine particle zinc oxide can be any type that is commonly used in cosmetics. The shape of the fine particle zinc oxide is not particularly limited. In addition, commercially available fine particle zinc oxide products include FINEX-25, FINEX-30, and FINEX-50 (all manufactured by Sakai Chemical Industry Co., Ltd.), MZ-300, and MZ-500 (all manufactured by Teika Corporation), etc.

[0017] The zinc oxide microparticles can be used after the surface is hydrophilized or hydrophobized as required.Hydrophilic treatment means can be exemplified by surface treatment such as polyhydric alcohol treatment such as glycerin, hyaluronic acid treatment, etc.In addition, hydrophobic treatment means can be exemplified by surface treatment such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, urethane resin treatment, fatty acid treatment, etc.Among them, fatty acid treatment is preferred, and isostearic acid treatment is particularly preferred.

[0018] The fine particle zinc oxide and / or its surface-treated fine particle zinc oxide can be blended directly into cosmetics, but if necessary, it can be used in the form of a coating on the surface of other powders such as talc, mica, sericite, etc., or silica, spherical powder, etc.

[0019] The fine particle zinc oxide and / or its surface-treated fine particle zinc oxide powder can be blended directly into cosmetics, but it can also be dispersed in advance in an oil such as silicone oil or hydrocarbon oil, or in an aqueous component.

[0020] The above-mentioned fine particle metal oxides may be used alone or in combination of two or more. The blending amount of the fine particle metal oxide in the present invention is preferably 0.1 to 30 mass% based on the total amount of the cosmetic. When the fine particle metal oxide is 0.1 mass% or more, the ultraviolet ray blocking effect of the fine particle metal oxide can be expected to be enhanced. When the fine particle metal oxide is 30 mass% or less, the feel during use can be made more favorable.

[0021] The cosmetic of the present invention is preferably plastic-free from the viewpoint of global environmental conservation, and contains one or more types selected from spherical silica, spherical cellulose, and spherical borosilicate particles.

[0022] [Spherical silica] The spherical silica blended in the cosmetic of the present invention is also known as silicic anhydride or silicon dioxide, and preferably has an average particle size measured by microscopy of 1 to 50 μm. The spherical silica may be porous, hollow, or non-porous. Commercially available spherical silica products include Godball E-6C, E-16C, D-11C, D-25C, D11-796C, E2-824C, Godball E-90C, ST Powder G-MG, and ST Powder G-MY (all manufactured by Suzuki Oil & Fat Industries Co., Ltd.), Sunsphere NP-30, H-31, H-32, H-51, H-52, H-121, H-201, L-31, L-51, NP-30, NP-100, and NP-200 (all manufactured by AGC Si-Tech Co., Ltd.), Silica Microbead P-500 and P-4000 (all manufactured by JGC Catalysts and Chemicals Co., Ltd.), and Silica Beads SB-150, SB-300, SB-700, SB-705, and SBNP-810 (all manufactured by Miyoshi Chemicals Co., Ltd.).

[0023] When spherical silica is blended in the present invention, the blending amount is preferably 5 to 30% by mass relative to the total amount of the cosmetic. If the blending amount is less than 5% by mass, a good feeling during use may not be obtained.

[0024] [Spherical cellulose] The spherical cellulose incorporated in the cosmetic of the present invention preferably has an average particle size of 1 to 50 μm as measured by microscopy. The spherical cellulose may be crystalline cellulose itself, or a cellulose derivative such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, or hydroxypropylmethyl cellulose. Commercially available products include CELLULOBEADSD-10 and CELLULOBEADSUSF (both manufactured by Daito Chemical Industry Co., Ltd.).

[0025] In the present invention, when spherical cellulose is blended, the blending amount is preferably 0.1 to 40 mass % of the total amount of the cosmetic, and more preferably 0.5 to 30 mass %.

[0026] In the present invention, the spherical silica and spherical cellulose may be surface-treated with a hydrophobic treatment agent. Examples of hydrophobic treatments include the following treatments, which can be used alone or in combination of two or more types, but are not limited to these. (1) Treatment using silicones such as methylhydrogenpolysiloxane (Shin-Etsu Chemical Co., Ltd., trade name: Silicon KF99P), methylhydrogenpolysiloxane-dimethylpolysiloxane copolymer (Shin-Etsu Chemical Co., Ltd., trade name: Silicon KF-9901), dimethylpolysiloxane, branched silicone-based (ethoxy-functional) treatment agents described in JP 2001-72891 A (Shin-Etsu Chemical Co., Ltd., trade name: KF9908, KF9909), and acrylic silicone treatment agent described in WO 2004 / 091563 (Shin-Etsu Chemical Co., Ltd., trade name: KP574). (2) Treatment using an alkylalkoxysilane compound such as octyltriethoxysilane (trade name: DYNASILANOCTEO, manufactured by EVONIKDEGUSSA), hexyltrimethoxysilane, or octadecyltriethoxysilane. (3) Treatment with fatty acids such as palmitic acid and stearic acid. (4) Alkyl sugar treatment such as dextrin palmitate in which some of the hydroxyl groups of dextrin are alkyl esterified; metal soap treatment using alkali metal salts or alkaline earth metal salts of fatty acids. (5) Treatment with amino acids such as N-lauroyl-L-lysine, glutamic acid or its alkali salts, and acylated amino acids. (6) Fluorine treatment using perfluoroalkyl phosphate diethanolamine salt, perfluoroalkyl phosphate, perfluorohexylethyltriethoxysilane, perfluorooctylethyltriethoxysilane, copolymers containing functional groups with perfluoroalkyl chain lengths of C4 to C6, etc. (7) Treatment with a quaternary ammonium salt such as distearyldimethylammonium chloride.

[0027] [Spherical borosilicate particles] The spherical borosilicate particles incorporated into the cosmetic of the present invention preferably have an average particle size of 0.1 to 20 μm. A size of 1 to 20 μm is particularly preferred, more preferably 5 to 15 μm, and even more preferably 7 to 13 μm. The average particle size of the spherical borosilicate particles can be measured as the number-average average particle size according to the shape of the powder particles using microscopy. The borosilicate in the spherical borosilicate particles may be an alkali metal salt such as Na or K, an alkaline earth metal salt such as Mg or Ca, an Al salt, or a combination of these salts. Preferred are sodium borosilicate, calcium borosilicate, aluminum borosilicate, (Ca / Na) borosilicate, and (Ca / Al) borosilicate, with (Ca / Na) borosilicate being more preferred. The spherical borosilicate particles may be hollow or solid, or a combination of these may be used; however, solid borosilicate is preferred. The spherical borosilicate particles are labeled in cosmetics (INCI names) as borosilicate (Ca / Na) (CALCIUM SODIUM BOROSILICATE), borosilicate (Ca / Al) (CALCIUM ALUMINUM BOROSILICATE), etc., but any name may be used in the present invention, with borosilicate (Ca / Na) being more preferred. The spherical borosilicate particles may be used as is, or may be subjected to a hydrophilic or hydrophobic treatment.

[0028] In the present invention, when spherical borosilicate particles are blended, the blending amount is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, based on the total amount of the cosmetic.

[0029] [Panthenol] The panthenol used in the present invention is a precursor of D-pantothenic acid (vitamin B5), and there are no particular limitations on the raw materials, production method, purification method, etc., as long as it is one that is commonly used in cosmetics.

[0030] In the present invention, when panthenol is blended into the cosmetic, the blending amount is preferably 0.01 to 5 mass %, more preferably 0.05 to 5 mass %, and most preferably 0.3 to 1 mass %, relative to the total amount of the cosmetic.

[0031] The use of the cosmetic of the present invention is not particularly limited, but in view of its effects, it can be suitably used in makeup cosmetics such as foundations, base cosmetics, and sunscreen cosmetics.

[0032] In addition to the above-mentioned components, the cosmetic of the present invention may contain optional components used in ordinary cosmetics and quasi-drugs to the extent that the effects of the present invention are not impaired. Specific examples of such optional components include ultraviolet absorbers, ultraviolet scattering agents, oils, surfactants, thickeners, preservatives, fragrances, colorants, moisturizers, antioxidants, anti-inflammatory agents, and antibacterial agents.

[0033] The formulation of the cosmetic of the present invention is not particularly limited, and may be any formulation such as water-based, oil-based, or emulsion-type.

[0034] The cosmetic of the present invention can be prepared by a conventional method. [Example]

[0035] The present invention will be described in more detail below with reference to examples, but the scope of the present invention is not limited thereto. In the following examples, the blending amounts are expressed in mass % unless otherwise specified.

[0036] [Usability evaluation] Four sensory evaluation specialists independently used the cosmetics according to the Examples and Comparative Examples and conducted the following evaluations by consensus.

[0037] [Evaluation criteria] Stickiness No stickiness:◎ Almost no stickiness: 〇 Slightly sticky: △ Sticky: ×

[0038] Cosmetics serving as examples of the present invention and comparative examples were prepared according to the formulations shown in Table 1 by conventional methods.

[0039] [Table 1]

[0040] As shown in Table 1, the cosmetic composition of the present invention was free of microplastics, yet had a good feel when used, with improved stickiness.

Claims

1. A water-based or emulsion-type (excluding water-in-oil type) cosmetic preparation containing the following (A) to (D): (A) Niacinamide: 5% by mass or more (B) Fine particle metal oxide having an average particle size of 10 to 200 nm (C) Spherical silica, spherical cellulose, and spherical borosilicate particles (D) Panthenol

2. 2. The cosmetic according to claim 1, wherein the content of (D) panthenol is 0.3 to 1% by mass.

3. A cosmetic preparation according to claim 1 or 2, wherein (B) contains fine particle zinc oxide having an average particle diameter of 10 to 200 nm.

4. A cosmetic described in any one of claims 1 to 3, wherein (B) is 6.5 mass% or more of the total mass of the cosmetic.

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