Oily solid lip cosmetic containing scrub

Abstract

This invention provides a scrub-containing oily solid lip cosmetic that reduces the roughness, discomfort, and unpleasant sensation caused by scrubbing agents, while maintaining good exfoliation properties and a pleasant feel. [Solution] A scrub-containing oily solid lip cosmetic comprising (A) a scrub agent consisting of sugars and (B) a flexible spherical powder, wherein the content of component (A) is 2.0% to 4.0% by mass of the total cosmetic composition, and the mass ratio (A):(B) of component (A) to component (B) is 1:2 to 1:3.

Description

Technical Field

[0001] The present invention relates to a scrub-containing oily solid lip cosmetic.

Background Art

[0002] For lip cosmetics aimed at lip care, saccharides are blended from the viewpoint of safety. Among lip cosmetics, cosmetics containing a scrub agent are used to remove the thin skin of chapped lips.

[0003] Patent Document 1 discloses a cosmetic containing xylose and glucose in a predetermined ratio.

[0004] Patent Document 2 discloses a composition for removing lip thin skin containing a scrub agent having a predetermined particle size.

[0005] Patent Document 3 discloses an oily cosmetic containing pigment-containing particles and a water-soluble scrub agent having a predetermined particle diameter.

[0006] Patent Document 4 discloses an oily cosmetic containing dextrin fatty acid ester, fumed silica, a scrub agent, and an oil agent that is liquid at 25°C.

[0007] However, cosmetics containing a scrub agent have a strong irritation to the lips, and it has been a problem that a rough feeling, discomfort, and a sense of incongruity are likely to occur when applying the cosmetics on the lips.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

[0009] This invention provides a scrub-containing oily solid lip cosmetic that reduces the roughness, discomfort, and unfamiliar feeling caused by scrubbing agents, while providing good exfoliation and a pleasant feel. [Means for solving the problem]

[0010] The present invention relates to a scrub-containing oily solid lip cosmetic containing (A) a scrub agent made of sugars [hereinafter referred to as component (A)] and (B) a flexible spherical powder [hereinafter referred to as component (B)], wherein the content of component (A) is 2.0% to 4.0% by mass of the total cosmetic composition, and the mass ratio (A):(B) of component (A) to component (B) is 1:2 to 1:3. [Effects of the Invention]

[0011] The present invention provides a scrub-containing oily solid lip cosmetic that reduces the roughness, discomfort, and unpleasant sensation caused by the scrubbing agent, while achieving both exfoliation and a good user experience. [Modes for carrying out the invention]

[0012] Component (A) of the present invention is a scrubbing agent composed of sugars. From the viewpoint of low irritation to the skin, high safety, and no problem even if ingested, the scrubbing agent uses a powder composed of sugars, but it may also contain powders other than sugars. Examples of sugars include monosaccharides that cannot be further hydrolyzed, disaccharides in which two monosaccharides are linked together, polysaccharides which produce many monosaccharides when hydrolyzed, and sugar alcohols in which hydrogen is added to the carbonyl group of a sugar.

[0013] Examples of monosaccharides include glucose, fructose, xylose, mannose, and galactose; examples of polysaccharides include sucrose; and examples of sugar alcohols include mannitol. Among these, glucose is particularly preferred.

[0014] The average particle size of component (A) is 20 to 70 μm, and preferably 30 to 50 μm, from the viewpoint of scrubbing properties.

[0015] The average particle size of component (A) was calculated by dispersing component (A) in oil, taking photographs under a microscope, and measuring the Ferret diameter (the distance between two parallel lines when the particle is sandwiched between two parallel lines in a certain direction) of each particle from the captured images.

[0016] From the viewpoint of user experience, the content of ingredient (A) is 2.0 to 4.0% by mass of the total cosmetic product, and preferably 2.5 to 3.5% by mass.

[0017] Component (B) of the present invention is a flexible spherical powder. Examples of flexible spherical powders include urethane-based crosspolymers and silicone-based crosspolymers, and one type or two or more types may be used.

[0018] Flexibility is defined as a pressure of 10 MPa or less required to deform a single particle of the sample by 10% in diameter. A microcompression strength tester (MCT-W500, manufactured by Shimadzu Corporation) was used to measure the pressure.

[0019] Examples of urethane-based crosspolymers include (HDI / trimethylolhexyllactone) crosspolymer, (IPDI / poly(1,4-butanediol)-14) crosspolymer, and (HDI / PPG / polycaprolactone) crosspolymer, and one or more types can be selected.

[0020] The urethane-based crosspolymer is preferably spherical, meaning that it is roughly circular when viewed from any direction, and the minimum particle size is 80% or more, more preferably 90% or more, of the maximum particle size.

[0021] From the perspective of long-term stability, it is preferable to use (HDI / trimethylolhexyl lactone) cross-polymer as the urethane-based cross-polymer.

[0022] As the urethane-based cross-polymer, product names such as "D-400", "D-800", "CS-400", etc. sold by Toagosei Co., Ltd. can be used.

[0023] The urethane-based cross-polymer is preferably coated with silica.

[0024] Examples of the silicone-based cross-polymer include (dimethicone / vinyl dimethicone) cross-polymer, (vinyl dimethicone / methicone silsesquioxane) cross-polymer, (diphenyldimethicone / vinyl diphenyldimethicone / silsesquioxane) cross-polymer, etc., and one or more of them can be selected.

[0025] The silicone-based cross-polymer is preferably spherical, and the spherical shape means that it shows a substantially circular shape when projected from any direction, and the minimum value of the particle diameter is 80% or more, more preferably 90% or more of the maximum value.

[0026] From the perspective of long-term stability, it is preferable to use (vinyl dimethicone / methicone silsesquioxane) cross-polymer as the silicone-based cross-polymer.

[0027] As the silicone-based cross-polymer, product names such as "KMP-598", "KSP-100", "KSP-101", "KSP-105", "KSP-300", etc. sold by Shin-Etsu Chemical Co., Ltd. can be used.

[0028] From the perspective of scrubbability, the average particle diameter of component (B) is 4.5 to 18 μm, and preferably 12 to 18 μm.

[0029] The average particle size of component (B) can be determined by calculating 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 used as the average particle size.

[0030] From the viewpoint of exfoliating properties and storage stability, the content of component (B) is preferably 4.0 to 16.0% by mass, and more preferably 4.0 to 12.0% by mass, of the total cosmetic composition.

[0031] The mass ratio (A):(B) of component (A) to component (B) is preferably 1:2 to 1:3, more preferably 1:2.1 to 1:2.9, and even more preferably 1:2.2 to 1:2.4, from the viewpoint of scrubbing properties and usability.

[0032] The present invention's scrub-containing oily solid lip cosmetic composition contains, in addition to components (A) and (B), inorganic powders such as talc, mica, kaolin, synthetic fluorophlogopite, (fluoride / hydroxylated / oxidized) / (Mg / K / silicon), anhydrous silicic acid, hydrated silicic acid, alumina, aluminum hydroxide, zirconia, zinc oxide, cerium oxide, ultramarine, and Prussian blue, to the extent that they do not impair the effects of the present invention, lauroyl lysine, nylon-6, (HDI / PPG / polycaprolactone) crosspolymer, polymethyl methacrylate, alkyl polyacrylate, methyl methacrylate crosspolymer, (butyl acrylate / glycol dimethacrylate) crosspolymer, (methyl methacrylate / glycol dimethacrylate) crosspolymer, polymethylsilsesquioxane, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, and polysilicone-1, to the extent that they do not impair the effects of the present invention. Organic powders such as crosspolymers, polysilicone-22, metal soaps, glycerin, propylene glycol, sorbitol, polyethylene glycol, dipropylene glycol, 1,3-Butylene glycol, diglycerin, ethylhexylglycerin, pentanediol, hexanediol, caprylyl glycol, mannitol, POE methyl glycoside, biopolymers, sucrose and other humectants, cellulose, mineral oil, petrolatum, paraffin wax, ceresin, polyethylene, hydrogenated polyisobutene, hydrogenated polydecene, synthetic wax, squalane, esters of higher fatty acids and higher alcohols, oils and fats and other emollient components, methylparaben, ethylparaben, phenoxyethanol, sodium dehydroacetate, isopropylmethylphenol and other preservatives and disinfectants, esters of fatty acids and glycerin or glycerin polymers, esters of fatty acids and sucrose and other surfactants, ascorbic acid dipalmitate, magnesium ascorbyl phosphate and It may also contain other known cosmetic ingredients such as other salts, vitamins and their derivatives such as ascorbyl glucoside, tocopherol, tocopherol acetate, retinyl palmitate, nicotinamide, and biotin, 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 bis-ethylhexyloxyphenol methoxyphenyl triazine, antioxidants, fragrances, preservatives, chelating agents, antioxidants, and colorants such as pigments. [Examples]

[0033] Ingredient (A) • Glucose (average particle size 43 μm): Product name "TDA-C", manufactured by San-ei Sugar Refining Co., Ltd. Ingredient (B) • (HDI / Trimethylol Hexyllactone) Silica-Coated Crosspolymer (Pressure required for 10% deformation of a single particle diameter: 1.9 MPa): Product name "D-400", manufactured by Toshoku Pigment Co., Ltd. • Dimethicone-based crosspolymer (pressure required for a 10% deformation in the diameter of a single particle: 2.0 MPa): Product name "KSP-101", manufactured by Shin-Etsu Silicone Co., Ltd.

[0034] Comparison component (A') • Glucose (average particle size 15 μm): Product name "TDA-C", manufactured by San-ei Sugar Refining Co., Ltd. • Silica (average particle size 9 μm): Product name "Silica Microbead P-1500", manufactured by JGC Catalysts & Chemicals Co., Ltd. Comparison component (B') • Nylon fine powder (pressure required for a single particle to deform by 10% in diameter: 16.0 MPa): Product name "Nylon Powder 2002", manufactured by Arkema Corporation.

[0035] others • Candelilla wax: Product name "High Melting Point Candelilla Wax FR-100", manufactured by Nippon Natural Products Co., Ltd. • Synthetic wax: Product name "LIPWAX PZ80-20", manufactured by Nippon Natural Products Co., Ltd. • Microcrystalline wax: Product name "Refined Microcrystalline Wax", manufactured by Nikko Rica Co., Ltd. • Beeswax: Product name "Beeswax", manufactured by Miki Chemical Industry Co., Ltd. • Hydrogenated castor oil isostearate: Product name "Castride MIS-P", manufactured by National Mimatsu Co., Ltd. • Hydrogenated castor oil dimer dilinoleate: Product name "Lisocusta DA-L", manufactured by Higher Alcohol Industry Co., Ltd. • Hexyldecyl isostearate: Product name "ICIS", manufactured by Higher Alcohol Industry Co., Ltd. • Polyglyceryl-2 triisostearate: Product name "Cossmall 43V", Nisshin Oillio Group Co., Ltd. • Diisostearyl malate: Product name "Cosmol 222", manufactured by Nisshin Oillio Group Ltd. • Hydrogenated polyisobutene: Product name "Pearlream EX", manufactured by NOF Corporation. • Ethylhexyl palmitate: Product name "IOP", manufactured by Nikko Chemicals Co., Ltd. • Squalane: Product name "Olive Squalane", manufactured by Higher Alcohol Industry Co., Ltd. • Colorants Product names: UNIPURE RED LC3029, UNIPURE REDLC328, UNIPURE RED LC3079, UNIPURE RED LC383C, manufactured by Sensient Cosmetic Technologies. Product name: "C19-6619 SunCROMA D&C Red6 Sodium Salt,Soft-Tex FD&C Yellow 5 Al Lake C69-7724, Soft-TexFD&C Blue 1 Al Lake C39-7733, C43-1810 SunCROMA Ultramarine Bluet" Manufactured by Sun Chemical Corporation Product name: "C19-6619 SunCROMA D&C Red6 Sodium Salt,Soft-Tex FD&C Yellow 5 Al Lake C69-7724, Soft-TexFD&C Blue 1 Al Lake C39-7733, C43-1810 SunCROMA Ultramarine Bluet" Manufactured by Sun Chemical Corporation Product names: "TAROX Synthetic Iron Oxide R516-HP, TAROX Synthetic Iron Oxide LL100-HP, TAROX Synthetic Iron Oxide BL100-HP, TAROX Synthetic Iron Oxide R800-HP, TAROX Synthetic Iron Oxide R110-P" Manufactured by Titanium Industry Co., Ltd. • Tocopherol: "Tocopherol 100" manufactured by Nisshin Oillio Group, Ltd., and "d-δ-Tocopherol" manufactured by Tama Biochemical Co., Ltd.

[0036] Examples and Comparative Examples Ingredients other than those listed in Table 1 (A) and (B) were heated and melted at 90-100°C using a paddle mixer until transparent. Then, ingredients (A) and (B) from Table 1 were added and mixed, and the mixture was uniformly mixed using a three-roller mixer to prepare a molten cosmetic composition. The composition obtained in the previous step was heated to 80-100°C, degassed while stirring using a vacuum degasser, and then filled into a container or molded to obtain a scrub-containing oily solid lip cosmetic.

[0037] (1) The effect of scraping off the thin skin of the lips. Five female panelists evaluating cosmetics applied the cosmetic samples (Examples and Comparative Examples) to their lips using their usual application methods and evaluated them. The sensation of scraping off the thin layer of skin was evaluated based on the following criteria. The evaluation results were the average of the five panelists.

[0038] 5: I was able to remove the thin layer of skin with 2-3 applications. 4: I was able to remove the thin layer of skin with 4-5 applications. 3: It was necessary to apply the cream more than five times to remove the thin layer of skin. 2: More than 10 applications were required to scrape off the thin layer of skin. 1: It was not possible to scrape off the thin layer of skin.

[0039] (2) Smoothness during use Five female panelists evaluating cosmetics applied the cosmetic samples (Examples and Comparative Examples) to their lips using their everyday application methods and evaluated them. They assessed whether the product could be applied smoothly without any grittiness or discomfort, according to the following criteria. The evaluation results were based on the average of the five panelists.

[0040] 5: It was possible to apply it smoothly without feeling any roughness or discomfort. 4: Although it felt slightly rough and a little strange, it was able to be applied smoothly. 3: It felt rough and had an unpleasant texture, causing some discomfort during application. 2: I felt a rough texture and discomfort, and experienced unpleasant sensations during application. 1: I felt a strong roughness and discomfort, and experienced pain when applying it.

[0041] (3) Makeup longevity The cosmetic products of the examples and comparative examples were applied to the forearms of five female panelists evaluating cosmetics, using the same pressure as when applying to the lips, with an amplitude of approximately 3.0 cm, in three back-and-forth motions. Then, a tissue was placed on the applied area and lightly pressed with three fingers, and a fresh side of the tissue was used to lightly press again. The applied surface was then visually observed after removing the tissue, and the color retention on the applied surface was evaluated according to the following criteria. The evaluation results were taken as the average value of the five panelists.

[0042] 5: Compared to before application, there was no impression that the color had become lighter. 4: The color has become slightly lighter compared to before application. 3: The color has become lighter compared to before application. 2: Compared to before application, the color became lighter, and the outline where the cosmetic was applied became less defined. 1: Compared to before application, only a small amount of color remained.

[0043] (4) Stability over time (appearance) The cosmetic compositions obtained in the examples and comparative examples were filled into stick-shaped cosmetic containers (approximately 4.0 g capacity) with a diameter of approximately 11.8 mm and a height of approximately 45.0 mm using a beaker to obtain stick-shaped cosmetic products. The cosmetic products were placed in a constant temperature bath for a cycle test. The bath was set to 0°C and left to stand for 12 hours, then the bath was set to 40°C and left to stand for another 12 hours. This cycle test was performed for one month (approximately 30 cycles), with one cycle per day. The appearance of the cosmetic products after the test was visually observed and evaluated according to the following criteria. The evaluation results were the average values ​​of five panelists.

[0044] 5: No change 4: There is slight oil seepage on the surface. 3: Oil droplets are seeping out onto the surface. 2: There is oil seepage on the surface and slight melting on the surface. 1: Oil droplets seeping from the surface, surface melting present.

[0045] [Table 1]

[0046] The results in Table 1 show that the cosmetics of Examples 1 to 14, in which the mass ratio (A):(B) is within the range of 1:2 to 1:3, are superior in all aspects, including scrubbing properties, smoothness during use, makeup longevity, and appearance stability.

[0047] [Table 2]

[0048] On the other hand, the results in Table 2 show that the cosmetics of Comparative Examples 1 to 11 are inferior in at least one of the following aspects: scrubbing properties, smoothness during use, makeup longevity, or appearance stability. In Comparative Examples 1, 3, and 5, where the mass ratio (A):(B) exceeds 1:3 (meaning the content of (B) is more than three times that of (A)), the cosmetics are less likely to scrape off the thin skin of the lips. In comparative examples 2, 4, and 6, where the mass ratio (A):(B) was less than 1:2 (meaning the content of (B) was less than twice that of (A)), the cosmetics caused some discomfort upon application. The cosmetic composition in Comparative Example 7, which uses nylon powder in addition to organic powder, has a rough and unpleasant texture when applied, and does not provide a smooth feel. Comparative Example 8, which contained less than 2.0% by mass of component (A), was less effective at removing the thin skin on the lips, while Comparative Example 9, which contained more than 4.0% by mass of component (A), caused some discomfort upon application. Comparative Example 10, a cosmetic product using glucose with a particle size of less than 20 μm as a scrubbing agent, is less effective at scraping off the thin skin of the lips. The cosmetic product in Comparative Example 11, which used silica as a scrubbing agent, not only failed to provide smoothness but also had poor staying power. [Industrial applicability]

[0049] The scrub-containing oily solid lip cosmetic of the present invention can be used in lipsticks and other lip products.

Claims

1. (A) A scrubbing agent consisting of sugars [hereinafter referred to as component (A)], and (B) Contains a flexible spherical powder [hereinafter referred to as component (B)], The content of ingredient (A) is 2.0% to 4.0% by mass of the total cosmetic product. A scrub-containing oily solid lip cosmetic in which the mass ratio (A):(B) of component (A) to component (B) is 1:2 to 1:

3.

2. The scrub-containing oily solid lip cosmetic according to claim 1, wherein the content of component (A) is 2.5% to 3.5% by mass of the total cosmetic composition.

3. The scrub-containing oily solid lip cosmetic composition according to claim 1, wherein component (A) is glucose.

4. The scrub-containing oily solid lip cosmetic composition according to claim 1, wherein the average particle size (ferret diameter) of component (A) is 20 to 70 μm.

5. The scrub-containing oily solid lip cosmetic composition according to claim 1, wherein the pressure required to deform one particle of component (B) by 10% in diameter is 10 MPa or less.

6. The scrub-containing oily solid lip cosmetic according to claim 1, wherein the content of component (B) is 4.0% by mass to 16.0% by mass of the total cosmetic composition.

7. The scrub-containing oily solid lip cosmetic composition according to claim 1, wherein component (B) is one or more selected from urethane-based crosspolymers or silicone-based crosspolymers.

8. The scrub-containing oily solid lip cosmetic according to claim 7, wherein component (B) is (HDI / trimethylol hexyllactone) crosspolymer.

9. The scrub-containing oily solid lip cosmetic according to claim 7, wherein component (B) is a urethane-based crosspolymer coated with silica.

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