JP7656324B2 - Solid powder cosmetics - Google Patents

Description

The present invention relates to solid powder cosmetics such as powder foundations.

Patent Document 1 (JP 2009-155332 A) describes an invention for a sunscreen cosmetic which comprises a pressure-disintegrating spherical powder obtained by mixing plate-like hydroxyapatite having an average particle size of 1 to 100 μm and a specific surface area of 1 to 100 ^m2 /g with a hydrophilic polymer and spray-drying the mixture, and an inorganic ultraviolet shielding agent (claims).
The hydrophilic polymers described herein include combinations of water-soluble polymers selected from the group consisting of gum arabic, tragacanth gum, galactan, guar gum, carrageenan, xanthan gum, pectin, agar, gelatin, quince seed, dextran, dextrin, pullulan, carboxymethyl starch, collagen, casein, cellulose, methylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, sodium alginate, carboxyvinyl polymer, and sodium hyaluronate, and water-insoluble polymers selected from the group consisting of crystalline cellulose powder, starch powder, partially pregelatinized starch powder, silk powder, chitosan powder, alkyl polyacrylate, and nylon powder (claims).
Product forms such as makeup base, sunscreen, and foundation are described (paragraph number 0034).

Patent Document 2 (JP 2020-180088 A) describes an external skin preparation containing (A) and (B). (A): one or more selected from boron nitride, barium sulfate, acylamino acid powder, glittering powder, spherical silica, spherical calcium carbonate, spherical cellulose, spherical starch, spherical modified starch, and spherical silk (B): spherical glass beads having an average particle size of 0.1 to 20 μm. The invention is described (claims).
From Example 1 and Comparative Example 1 (Table 1) and the like, it has been evaluated that the Example has a better dry feeling and makeup retention, depending on whether or not glass beads are used.

Patent Document 3 (JP Patent Publication 8-12527 A) describes an invention of a cosmetic preparation comprising at least one type of powder selected from the group consisting of spherical calcium carbonate, spherical calcium carbonate-apatite complexes, and silicone-treated spherical calcium carbonate-apatite complexes (claims).
The spherical calcium carbonate-apatite complex is described as being a spherical precipitated calcium carbonate whose surface is coated with apatite (claims).
The cosmetic preparation is described in the form of a powder foundation, etc. (Examples 1 and 2).

JP 2009-155332 A JP 2020-180088 A Japanese Patent Application Publication No. 8-12527

The objective of the present invention is to provide a solid powder cosmetic that spreads well when applied and feels good on the skin even without the inclusion of plastic beads, and also has a good translucent feel after application.

The present invention contains (A) spherical cellulose and (B) spherical calcium carbonate having apatite attached to its surface, and does not contain glass beads.
The total content of the (A) component and the (B) component is 5 to 30 mass %,
In the total amount of the (A) component and the (B) component, the content of the (A) component is 30 to 95 mass%, and the content of the (B) component is 5 to 70 mass%,
However, when the content of the component (A) is 30 to 70% by mass and the content of the component (B) is 70 to 30% by mass, the total content of the components (A) and (B) is 5 to 15% by mass.

The solid powder cosmetic of the present invention spreads well when applied and feels good on the skin (adheres well to the skin), and has a good sense of transparency after application (giving an impression similar to that of bare skin even after application of makeup).

Component (A) is spherical cellulose. Component (A) can preferably be cellulose or cellulose acetate.

The average particle size of component (A) is preferably 3 μm to 10 μm, and more preferably 4 μm to 8 μm.

The spherical cellulose is preferably a true sphere, and the term "true sphere" means that the cellulose is roughly circular when projected from any direction, and the minimum particle size is 80% or more, more preferably 90% or more, of the maximum particle size.

Component (B) is spherical calcium carbonate having apatite attached to its surface.
The component (B) is a known compound, and for example, those described in paragraphs 0006 to 0019 of JP-A-8-12527 can be used.
The average particle size of component (B) is preferably from 5 μm to 15 μm, and more preferably from 8 μm to 12 μm.

The total content of components (A) and (B) in the solid powder cosmetic of the present invention is 5 to 30% by mass, preferably 6 to 28% by mass, and more preferably 8 to 25% by mass.

In the total amount of component (A) and component (B) (total 100% by mass),
The content of the (A) component is 30 to 95 mass%, preferably 40 to 95 mass%, and more preferably 45 to 95 mass%,
The content of the component (B) is from 5 to 70% by mass, preferably from 5 to 60% by mass, and more preferably from 5 to 55% by mass.
However, when the content of the component (A) is 30 to 70 mass % and the content of the component (B) is 70 to 30 mass %, the total content of the components (A) and (B) is 5 to 15 mass %.

The solid powder cosmetic preparation of the present invention may further contain, as component (C), a powder mixture containing finely divided titanium dioxide having an average particle size of 0.01 to 0.20 μm.
Other powder components contained in the powder mixture of component (C) include metal oxide powders such as titanium oxide, iron oxide, fine particle iron oxide, zinc oxide, fine particle zinc oxide, and cerium oxide, and may also be composites of these metal oxide powders with silica, aluminum hydroxide, aluminum oxide, magnesium stearate, etc.
The powder mixture of component (C) may be a mixture in which it is premixed with a powder having a larger average particle size than the fine particle titanium dioxide. Examples of powders having a larger average particle size include talc, mica, sericite, synthetic fluorophlogopite, (fluoride/hydroxide/oxide)/(Mg/K/silicon), etc., and among these, those containing talc are preferred.
When component (C) is a powder mixture containing fine particle titanium dioxide and talc, the content of fine particle titanium dioxide in component (C) is preferably 20 to 40 mass%, more preferably 25 to 35 mass%, and the content of talc is preferably 60 to 75 mass%, more preferably 65 to 70 mass%.

The solid powder cosmetic preparation of the present invention may further contain, as component (D), glycerin or a glycerin condensate and an ester of a higher fatty acid that is liquid at room temperature (10 to 30° C.).
As component (D), a mixture of a mono-, di-, or triester of isostearic acid and glycerin is preferred.
The content of component (D) in the solid powder cosmetic is preferably 1 to 5% by mass.

The solid powder cosmetic of the present invention may further contain, as component (E), a higher alcohol having 14 or more carbon atoms that is liquid at room temperature (10 to 30° C.).
The content of component (E) in the solid powder cosmetic is preferably 3 to 8% by mass.

The solid powder cosmetic of the present invention may contain other known cosmetic ingredients as described below within the scope of not impairing the effects of the present invention, but does not contain glass beads. The glass beads are used in cosmetics, and include, for example, those described in Patent Document 2 (JP 2020-180088 A).
Inorganic powders such as talc, mica, kaolin, synthetic fluorophlogopite, (fluoride/hydroxide/oxide)/(Mg/K/silicon), silicic anhydride, hydrated silicic acid, alumina, aluminum hydroxide, zirconia, zinc oxide, cerium oxide, gunjou, and Prussian blue (excluding component (C)),
Lauroyl lysine, nylon-6, (HDI/trimethylol hexyllactone) crosspolymer, (HDI/PPG/polycaprolactone) crosspolymer, polymethyl methacrylate, polyalkyl acrylate, methyl methacrylate crosspolymer, (butyl acrylate/glycol dimethacrylate) crosspolymer, (methyl methacrylate/glycol dimethacrylate) crosspolymer, polymethylsilsesquioxane, (vinyl dimethicone/methicone silsesquioxane) crosspolymer, (diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane) crosspolymer, polysilicone-1 crosspolymer, polysilicone-22, organic powders such as metal soaps,
Moisturizing agents such as glycerin, propylene glycol, sorbitol, polyethylene glycol, dipropylene glycol, 1,3-butylene glycol, diglycerin, ethylhexylglycerin, pentanediol, hexanediol, caprylyl glycol, mannitol, POE methylglycoside, biopolymers, and sucrose;
Emollient ingredients such as mineral oil, petrolatum, paraffin wax, ceresin, polyethylene, hydrogenated polyisobutene, hydrogenated polydecene, synthetic wax, squalane, esters of higher fatty acids and higher alcohols, and oils and fats.
Preservatives and disinfectants such as methylparaben, ethylparaben, phenoxyethanol, sodium dehydroacetate, and isopropylmethylphenol,
Surfactants such as esters of fatty acids and sucrose,
Ascorbyl dipalmitate, magnesium ascorbyl phosphate and other salts, ascorbyl glucoside, tocopherol, tocopherol acetate, retinol palmitate, nicotinamide, vitamins such as biotin and their derivatives, amino acids and their derivatives,
pH adjusters such as potassium hydroxide, sodium hydroxide, magnesium sulfate, triethanolamine, aminomethylpropanol, aminomethylpropanediol, citric acid, sodium citrate, lactic acid, and sodium lactate;
UV absorbers such as ethylhexyl methoxycinnamate, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, octocrylene, and bisethylhexyloxyphenol methoxyphenyl triazine, antioxidants, fragrances, preservatives, chelating agents, and antioxidants.

The average particle size of the ingredients contained in the solid powder cosmetic of the present invention can be determined by determining the particle size distribution using a laser diffraction particle size distribution analyzer SALD-2100 (Shimadzu Corporation), and the particle size at 50% of the cumulative volume can be regarded as the average particle size.

The solid powder cosmetic of the present invention can be made into a powder makeup cosmetic including a powder foundation, pressed powder, solid face powder, blusher, powder eye shadow, powder eyebrow, and powder eyeliner.

<Ingredients used>
(A) Component Spherical cellulose: GE-800 (Toshiko Pigment Co., Ltd.), average particle size 6.0 μm
(B) Ingredient: Spherical calcium carbonate with apatite attached to the surface: Apacal 10 (New Lime Co., Ltd.) Average particle size: 10 μm
Component (C) Powder mixture containing fine titanium oxide: Mixture of talc, fine titanium oxide, magnesium stearate, and aluminum hydroxide (fine titanium oxide 28% by mass, talc 68% by mass): TC-30N (Miyoshi Kasei Co., Ltd.)
(D) Component Glycerin or glycerin condensate and higher fatty acid ester: Glyceryl isostearate, HR Oil NG (Natural Mimatsu Co., Ltd.)
Component (E) Higher alcohol having 14 or more carbon atoms: octyldodecanol (other components)
Glass beads: COVABEAD CRYSTAL (SENSIENT)

Examples 1 to 6
(How to adjust)
The components (A), (B), (C), colorant, and filler were mixed uniformly in a Henschel mixer, and then the mixture of the components (D), (E), and liquid components was added and mixed. The resulting mixture was pulverized in an atomizer. Then, it was pressed into a metal plate.
The obtained solid powder cosmetic compositions were evaluated for the following items. The results are shown in Table 1.

(1) Spreadability and Unevenness of Application The usability (spreadability and unevenness of application on the skin) when using a cosmetic puff without moistening it with water was evaluated according to the following criteria.
5: Very good spread and no unevenness in application 4: Good spread and almost no unevenness in application 3: Normal spread and unevenness in application 2: Poor spread and unevenness in application 1: Very bad spread and unevenness in application

(2) Adhesion The usability (adhesion to the skin) of a cosmetic puff when used without being wetted with water was evaluated according to the following criteria.
5: Very good adhesion to skin 4: Good adhesion to skin 3: Average adhesion to skin 2: Poor adhesion to skin 1: Very poor adhesion to skin

(3) Softness and Moisture Feeling The softness and moist feel of a cosmetic puff when used without being wetted with water was evaluated according to the following criteria.
5: Very good softness and moistness 4: Good softness and moistness 3: Average softness and moistness 2: Poor softness and moistness 1: Very poor softness and moistness

(4) Transparency Transparency (a feeling that gives an impression similar to bare skin even after makeup is applied) when a cosmetic puff is used without being wetted with water was evaluated according to the following criteria.
5: Very transparent (looks like bare skin)
4: Good transparency 3: Average transparency 2: Poor transparency 1: Very poor transparency

(5) Coverage (good coverage makes uneven skin tone less noticeable after application and helps correct uneven skin tone)
5: Very good coverage 4: Good coverage 3: Average coverage 2: Poor coverage 1: Very poor coverage

As is clear from Table 1, the solid powder cosmetics of Examples 1 to 6 spread well when applied (spreadability/unevenness), felt good on the skin (adherence), and had good transparency. Results were equal to or better than those of products containing plastic beads.

Comparative Examples 1 to 16
Solid powder cosmetic preparations were obtained in the same manner as in Examples 1 to 6, and then similar evaluations were carried out. The results are shown in Table 2.

As is clear from Table 2, the comparative examples that did not contain component (A) or component (B), the comparative examples that did not contain both component (A) and component (B), and comparative examples 4 to 6 that did not satisfy the contents of component (A) and component (B) were largely evaluated as being unfavorable.
Furthermore, comparing Example 6 in Table 1 with Comparative Example 4 in Table 2, when the content of component (A) was 30 to 70 mass% and the content of component (B) was 70 to 30 mass%, when the total content of components (A) and (B) exceeded 15 mass%, many evaluations were negative.

Example 7, Comparative Examples 17 and 18
Solid powder cosmetic preparations were obtained in the same manner as in Examples 1 to 6, and then similar evaluations were carried out, except that the glass beads were mixed together with component (A), component (C), the colorant, and the filler.
The results are shown in Table 2.

Comparative Examples 17 and 18, which contained glass beads, were inferior in particular to Example 8 in terms of "spread/unevenness" and "transparency". This is thought to be because the inclusion of glass beads inhibited the improving effect of the combination of components (A) and (B) on "spread/unevenness" and "transparency".
In addition, compared to Example 7, Comparative Example 17 was inferior in "adhesion" and Comparative Example 18 did not improve in "adhesion" either. Therefore, it is considered that at least glass beads are not a component that improves "adhesion".

The solid powder cosmetic of the present invention can be used as a powder makeup cosmetic, including powder foundation, pressed powder, solid face powder, blusher, powder eye shadow, powder eyebrow, and powder eyeliner.

Claims (4)

(A) contains spherical cellulose and (B) spherical calcium carbonate having apatite attached to its surface, but does not contain glass beads;
In the solid powder cosmetic preparation, the content of the component (A) is 5 to 14% by mass, and the total content of the component (A) and the component (B) is 6 to 30% by mass,
In the total amount of the component (A) and the component (B), the content of the component (A) is 45 to 95 mass %, and the content of the component (B) is 5 to 55 mass %,
However, when the content of the component (A) is 45 to 70% by mass and the content of the component (B) is 55 to 30% by mass, the total content of the components (A) and (B) is 6 to 15% by mass. The solid powder cosmetic according to claim 1, wherein the average particle size of the spherical cellulose of component (A) is 3 μm to 10 μm. The solid powder cosmetic according to claim 1 or 2, wherein the average particle size of the spherical calcium carbonate with apatite attached to the surface of component (B) is 5 μm to 15 μm. 4. The solid powder cosmetic according to claim 1 , which is a powder makeup cosmetic comprising a powder foundation, a pressed powder, a solid face powder, a blusher, a powder eye shadow, a powder eyebrow, or a powder eyeliner.