JP2023091549A - Labial cosmetic - Google Patents

Abstract

To provide a labial cosmetic that develops a fresh color even when applied to dull lips, giving a beautiful natural finish.SOLUTION: A labial cosmetic contains following components (A), (B) and (C): (A) plate-like particles coated with Lithol rubine BCA of 0.01-15 mass%; (B) Lithol rubine BCA of 0.001-5 mass%, excluding (A); and (C) paste oil with a melting point of 33-60°C of 0.5-18 mass%, including paste oil with a melting point of 33-55°C of 75 mass% or more.SELECTED DRAWING: None

Description

The present invention relates to a lip cosmetic.

Lip cosmetics are required to have excellent color development and a beautiful finish when applied to the lips.
For example, in Patent Document 1, a plate-like powder coated with Red No. 202, and a lip cosmetic containing Red No. 202 other than this, liquid hydrocarbon oil and liquid higher alcohol, have a color immediately after application. It is described that it suppresses the conspicuousness of unevenness and gives a uniform finish.
Further, in Patent Document 2, a plate-like powder coated with a pigment selected from Yellow No. 4 and Blue No. 1, a pigment selected from Yellow No. 4 and Blue No. 1 other than this, and Red No. 202 It is described that a lip cosmetic containing coated plate-like powder and an oil provides a uniform finish of color and gloss immediately after application, and maintains vividness.

JP 2019-26597 A JP 2020-125255 A

On the other hand, the beauty of lips is related to shape, wrinkles, color, etc., and these factors are related to color development and finish when applied. Of these, the lip color, particularly the dullness of the lips, greatly affects the coloring of the lipstick, and conventional lip cosmetics have the problem that vivid coloring cannot be obtained when applied to dull lips.
Here, the dullness of the lips is considered to be a state in which the lips have a low chroma color or a low lightness color. It is generally believed that one of the causes of this dullness of the lips is that redness decreases with age and blood flow decreases.

The present inventors combined a plate-like powder coated with Red No. 202 and a colorant of Red No. 202, and further combined use of a specific paste oil, and found that even when applied to dull lips, , It was found that a lip cosmetic having a beautiful and natural finish with vivid color development can be obtained.

The present invention provides the following components (A), (B) and (C):
(A) Plate-like powder coated with Red No. 202 0.01 to 15% by mass,
(B) Red No. 202 0.001 to 5% by mass, excluding component (A),
(C) 0.5 to 18% by mass of paste oil with a melting point of 33 to 60°C containing 75% by mass or more of a paste oil with a melting point of 33 to 55°C
It relates to a lip cosmetic containing

The lip cosmetic of the present invention provides vivid color development, a beautiful and natural finish even on dull lips, and the vivid color development lasts for a long time.

Component (A) used in the present invention is plate-like powder coated with Red No. 202.
Red No. 202 is used as a coloring pigment in ordinary cosmetics, and its general name is "Resol Rubin BCA." Red No. 202 may be dispersed in barium sulfate to improve color development, or may be added with rosin as a dispersing agent.
Plate powder substrates include talc, silica, sericite, mica, synthetic phlogopite, glass, kaolin, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, alumina, titanium oxide, iron oxide, etc. natural or synthetic inorganic powders.
Among them, talc, mica, synthetic phlogopite, and glass are preferred, and mica and synthetic phlogopite are more preferred.
A composite powder obtained by coating the surface of the plate-like powder with a metal oxide such as titanium dioxide, iron oxide, or silicic anhydride can also be used. Specific examples of the composite powder include titanium mica, iron oxide-coated mica, iron oxide-coated mica titanium, titanium oxide-coated synthetic phlogopite, iron oxide-coated synthetic phlogopite, iron oxide/titanium oxide-coated synthetic phlogopite, and titanium oxide-coated glass powder, iron oxide-coated glass powder, iron oxide/titanium oxide-coated glass powder, titanium oxide-coated alumina, iron oxide-coated alumina, iron oxide/titanium oxide-coated alumina, titanium oxide/silicic anhydride-coated mica, etc.; Titanium and titanium oxide-coated synthetic phlogopite are preferred.

The shape of the plate-like powder is preferably flaky, and the average particle size should be such that even on dull lips, the lipstick color vividly develops, continues to develop, and gives a beautiful and natural finish. , preferably 5 to 100 μm, more preferably 5 to 60 μm. The aspect ratio is preferably 15-200, more preferably 20-100.
In the present invention, the average particle size is measured by electron microscopic observation and a particle size distribution analyzer based on a laser diffraction/scattering method. Specifically, in the case of laser diffraction / scattering method, ethanol is used as a dispersion medium, measured with a laser diffraction scattering particle size distribution analyzer (eg, LA-920 manufactured by Horiba, Ltd.), and the 50% median diameter is the average particle diameter. and For the thickness, the difference from the reference surface is measured with an atomic force microscope, and the arithmetic mean is taken as the average thickness.
Also, the aspect ratio is calculated from the ratio of the average particle size to the average thickness, and is defined by aspect ratio=average particle size/average thickness.

The coating amount of Red No. 202 on the plate-like powder is the total amount of component (A) from the viewpoint of vividly developing the lipstick color even on dull lips, maintaining the color development, and imparting a beautiful and natural finish. Among them, 0.5 to 30% by mass is preferable, 1 to 25% by mass is more preferable, and 2 to 17% by mass is even more preferable. The content of Red No. 202 in the total amount of component (A) is described below as the coating amount of Red No. 202.

Examples of such plate-like powder include Cellini Red (manufactured by BASF, mica titanium substrate, 6 to 48 μm, coated with 13% by mass of Red No. 202), C91-1231 INTENZA Razzled Rose (manufactured by DIC, mica titanium substrate, 10 to 60 μm, coated with 10% by mass of Red No. 202), C91-1232 INTENZA Haute Pink (manufactured by DIC, mica titanium substrate, 10 to 60 μm, coated with 10% by mass of Red No. 202), C91-1233 INTENZA Electric Coral (manufactured by DIC, mica titanium substrate, 10 to 60 μm, coated with 12% by mass of Red No. 202), C91-1234 INTENZA Magentitude (manufactured by DIC, mica titanium substrate, 10 to 60 μm, coated with 5% by mass of Red No. 202) ), C91-4232 INTENZA Cerise (manufactured by DIC, titanium oxide-coated synthetic phlogopite substrate, 10 to 60 μm, coated with 10% by mass of red No. 202), C91-4234 INTENZA Tourmalink (manufactured by DIC, titanium oxide-coated synthetic phlogopite substrate, 10-60 μm, coated with 5% by weight of Red No. 202).

Component (A) can be used alone or in combination of two or more, and the content is such that even on dull lips, the lipstick color develops vividly, the color development lasts, and a beautiful and natural finish is imparted. Therefore, it is 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 1% by mass or more in the entire composition. In addition, it is 15% by mass or less, preferably 13% by mass or less, more preferably 12% by mass or less from the same viewpoint. The content of component (A) is 0.01 to 15% by mass, preferably 0.1 to 13% by mass, more preferably 1 to 12% by mass in the total composition.

Component (B), Red No. 202, is used as a coloring pigment, has the general name of "Lisol Rubin BCA", and is also used as a coating agent for Component (A). Red No. 202 may be dispersed in barium sulfate to improve color development, or may be added with rosin as a dispersing agent.
By using the component (B) in combination with the component (A), even if the lips are dull, the lipstick color vividly develops, the color development lasts, and a beautiful and natural finish can be imparted.
Red No. 202 can be used as it is, or can be used after hydrophobization or hydrophilization.
Component (A) may also be subjected to hydrophobization treatment or hydrophilization treatment in the same manner as component (B).

The hydrophobizing treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders, and includes fluorine compounds, silicone compounds, metal soaps, amino acid compounds, lecithin, alkylsilanes, oils, organic titanates, and the like. A dry treatment, a wet treatment, or the like may be performed using a surface treatment agent.
Specific examples of surface treatment agents include fluorine-based compounds such as perfluoropolyethers, perfluoroalkyl phosphates, perfluoroalkylalkoxysilanes, and fluorine-modified silicones; Silicone compounds such as terminal or both terminal trialkoxy group-modified organopolysiloxanes, crosslinked silicones, silicone resins, fluorine-modified silicone resins, and acrylic-modified silicones; aluminum stearate, aluminum myristate, zinc stearate, magnesium stearate, etc. Metallic soap; amino acid compounds such as lauroyllysine, proline, hydroxyproline, alanine, glycine, sarcosine, glutamic acid, aspartic acid, lysine and their derivatives; lecithin, hydrogenated lecithin; methyltrimethoxysilane, ethyltrimethoxysilane, hexyl Alkylsilanes such as trimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane and triethoxycaprylylsilane; oils such as polyisobutylene, waxes and oils; organic titanates such as isopropyltriisostearoyl titanate;

Moreover, the hydrophilization treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders.
For example, gum arabic, tragacanth, arabinogalactan, locust bean gum (carob gum), guar gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), starch (rice, corn, potato, wheat), algaecolloid, tranto gum, plant-based polymers such as locust bean gum; microbial-based polymers such as xanthan gum, dextran, succinoglucan and pullulan; animal-based polymers such as collagen, casein, albumin, deoxyribonucleic acid (DNA) and salts thereof; carboxymethyl starch , starch-based polymers such as methylhydroxypropyl starch; Polymer; Alginic acid-based polymers such as sodium alginate and propylene glycol alginate; Vinyl-based polymers such as polyvinyl methyl ether, polyvinylpyrrolidone and carboxyvinyl polymer; Polyoxyethylene-based polymers such as polyethylene glycol and polyethylene glycol silane; Oxyethylene-polyoxypropylene copolymer-based polymers; acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylic acid amide; and inorganic silicic acid compounds such as silica.

The hydrophobizing treatment and hydrophilizing treatment can be carried out according to usual methods. From the viewpoint of improving dispersibility in oil, treatment with an amino acid compound, alkylsilane, or organic titanate is preferable, and treatment with lauroyllysine or isopropyltriisostearoyl titanate is more preferable.
The amount of hydrophobization treatment and hydrophilization treatment is preferably 0.1 to 15% by mass, more preferably 3 to 12% by mass, relative to the amount of Red No. 202 from the viewpoint of improving dispersibility in a solvent. .

The content of component (B) does not include the amount of Red No. 202 used as a coating material in component (A).
The content of component (B) is 0.001% by mass or more in the total composition, from the viewpoint of providing a vivid lipstick color, long-lasting color development, and a beautiful and natural finish even on dull lips. , preferably 0.01% by mass or more, more preferably 0.05% by mass or more, 5% by mass or less, preferably 3% by mass or less, and more preferably 1% by mass or less. The content of component (B) is 0.001 to 5% by mass, preferably 0.01 to 3% by mass, more preferably 0.05 to 1% by mass in the total composition.

In the present invention, the mass ratio (A)/(B) of component (A) to component (B) is such that even on dull lips, the lipstick color develops vividly, the color development lasts, and the finish is beautiful and natural. is preferably 10 or more, more preferably 15 or more, still more preferably 25 or more, preferably 100 or less, more preferably 80 or less, and even more preferably 65 or less. The mass ratio (A)/(B) of component (A) to component (B) is preferably 10-100, more preferably 15-80, and even more preferably 25-65.

The component (C) used in the present invention is a paste oil with a melting point of 33-60°C containing 75% by mass or more of a paste oil with a melting point of 33-55°C.
In the present invention, the melting point is measured by the method described in Method 3 of General Test Methods for Cosmetic Ingredients. Specifically, the sample is gradually heated to 90 to 92° C. while stirring to melt, the heating is stopped, and the sample is allowed to cool to a temperature 8 to 10° C. higher than the melting point. Next, after cooling the thermometer (the thermometer for the melting point of petrolatum specified in Japanese Industrial Standard B7410) to 5°C, remove the moisture with filter paper, insert half of the mercury ball into the sample, remove it immediately, and keep it vertical. Allow to cool, and when the adhering sample becomes turbid, immerse in water at a temperature of 16°C or less for 5 minutes. Next, insert the thermometer into the test tube and fix the thermometer with a cork so that the distance between the lower end of the thermometer and the bottom of the test tube is 15 mm. This test tube is placed in a 500 mL beaker containing water at about 16°C, and the bottom of the test tube is fixed at a distance of 15 mm from the bottom of the beaker. Heat in increments of 2°C. Then, the heating is continued so that the temperature rises by 1° C. per minute, and the temperature is measured when one drop of the sample leaves the thermometer. This test is performed three times, and when the difference in the measured values is less than 1°C, the average value is taken.

The paste oil of component (C) is not limited as long as it is used in ordinary cosmetics. 54°C), hexa(behenate/benzoate/ethylhexanoate) dipentaerythrityl (52°C), cholesteryl hydroxystearate (52°C), tetra(hydroxystearate/isostearate) dipentaerythrityl (50°C), hydrogenated palm oil (47°C), dipentaerythrityl hexahydroxystearate (45°C), tri(caprylic/capric/myristate/stearate) glyceryl (40°C), hexa(hydroxystearic/stearic/rosin) dipentaerythrityl (37) ° C), phytosteryl oleate (33 ° C), glyceryl (ethylhexanoate/stearate/adipate) (31 ° C), di(octyldodecyl/phytosteryl/behenyl lauroyl glutamate) (33 ° C), dimer dilinoleate (phytosteryl /isostearyl/cetyl/stearyl/behenyl) (34°C), dimer dilinoleyl bis(behenyl/isostearyl/phytosteryl) dimer dilinoleate (38°C), hard lanolin (49°C), reduced lanolin (45°C) , bisdiglyceryl polyacyl adipate-2 (39° C.) and the like (melting point in parenthesis).

The paste oil of component (C) has a melting point of 33 to 55 in component (C) from the viewpoint of vividly developing a lipstick color even on dull lips, sustaining the color development, and imparting a beautiful and natural finish. °C paste oil in an amount of 75% by mass or more, preferably 80% by mass or more, and more preferably 90% by mass or more.

The content of component (C) is 0.5% by mass or more in the total composition, from the viewpoint of providing a vivid lipstick color, long-lasting color development, and a beautiful and natural finish even on dull lips. is preferably 1% by mass or more, more preferably 2% by mass or more, and is 18% by mass or less, preferably 16% by mass or less, and more preferably 14% by mass or less. The content of component (C) is 0.5 to 18% by mass, preferably 1 to 16% by mass, more preferably 2 to 14% by mass in the total composition.

The lip cosmetic of the present invention can further contain an oil that is liquid at 25°C.
Here, the term "liquid at 25°C" means that the substance has fluidity at 25°C and a melting point of 32°C or less.
Oil agents that are liquid at 25° C. include those used in ordinary cosmetics, such as hydrocarbon oils, ester oils, and higher alcohols.
Examples of hydrocarbon oils that are liquid at 25°C include linear or branched liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, hydrogenated polyisobutene, mineral oil, polybutene, polyisobutene, hydrogenated polydecene, squalane, squalene, and the like. of hydrocarbon oils.
Among these, hydrogenated polyisobutene and hydrogenated polydecene are preferred, and hydrogenated polyisobutene is included, from the viewpoint of vividly developing lipstick color, maintaining color development, and imparting a beautiful and natural finish even on dull lips. is more preferred.

Ester oils that are liquid at 25°C include, for example, isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate, isostearyl myristate, and octyldodecyl ricinoleate. , diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, ethylhexyl methoxycinnamate, tocopheryl acetate, propylene carbonate, diisostearyl malate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diisostearic acid Diglyceryl, propanediol diisostearate, glyceryl monoisostearate monomyristate, glyceryl triisostearate, di (caprylic/caprylic) propanediol, tri (caprylic/capric) glyceryl, triethylhexanoin, tri-2- Trimethylolpropane ethylhexanoate, trimethylolpropane triisostearate, pentaerythrityl tetraoctanoate, pentaerythrityl tetraethylhexanoate, pentaerythritol tetraisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl triisostearate -2, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octacaprylate, (isostaric acid/sebacic acid) ditrimethylolpropane oligoester, dipentaerythrityl tripolyhydroxystearate, di(phytosteryl/octyldodecyl) lauroyl glutamate, trehalose isostearate ester oils such as dipentaerythrityl tetraisostearate, dipentaerythrityl pentaisostearate, ethylhexyl hydroxystearate, phytosterol fatty acid ester, cholesterol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester; avocado oil, macadamia nut oil, olive oil, rapeseed oil, Vegetable oils such as sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil, jojoba oil, sunflower oil, camellia oil and corn oil.

Among these, octyldodecyl myristate, diisostearyl malate, and neopentyl dicaprate are selected from the viewpoint of providing a vivid color, long-lasting color, and a beautiful and natural finish even on dull lips. Glycol, isotridecyl isononanoate, isononyl isononanoate, dipentaerythrityl tetraisostearate, di(phytosteryl/octyldodecyl) lauroyl glutamate, ethylhexyl methoxycinnamate, caprylic/capric triglyceryl, polyglyceryl-2 diisostarate, hydroxystearic acid Ethylhexyl and propylene carbonate are preferred, and diisostearyl malate, isotridecyl isononanoate, dipentaerythrityl tetraisostearate, caprylic/capric triglyceryl, and polyglyceryl-2 diisostarate are more preferred.

Higher alcohols that are liquid at 25° C. are preferably higher alcohols having a branched structure and having 16 to 24 carbon atoms, such as decyltetradecanol, octyldodecanol, isostearyl alcohol, hexyldecanol, and oleyl alcohol.
Among these, it is preferable that the lipstick contains at least octyldodecanol from the viewpoint of providing a vivid lipstick color, sustained color development, and a beautiful and natural finish even on dull lips.

One or more oils that are liquid at 25° C. can be used. It is preferably 55% by mass or more, more preferably 60% by mass or more, further preferably 65% by mass or more, and preferably 90% by mass or less, more preferably 87% by mass or less, and 85% by mass or less. More preferred. The content of the oil that is liquid at 25° C. is preferably 55 to 90% by mass, more preferably 60 to 87% by mass, and even more preferably 65 to 85% by mass in the total composition.

The lip cosmetic of the present invention can further contain a wax that is solid at 25°C. Here, the term "solid at 25°C" means that the substance is solid at 25°C and has a melting point of 61°C or higher. In addition, from the viewpoint of ease of heat dissolution at the time of blending, the melting point is preferably 140° C. or lower, more preferably 120° C. or lower, and even more preferably 110° C. or lower.
Examples of such waxes include mineral waxes such as ozokerite and ceresin; petroleum waxes such as paraffin, microcrystalline wax and petrolatum; synthetic hydrocarbon waxes such as Fischer-Tropsch wax, polyethylene wax and synthetic wax; carnauba wax and candelilla. Plant waxes such as wax, rice wax, wood wax, sunflower wax and hydrogenated jojoba oil; Animal waxes such as beeswax and whale wax; Synthetic waxes other than hydrocarbons such as silicone wax, fluorinated wax and synthetic beeswax; fatty acids, higher alcohols and derivatives thereof. Among these, paraffin, microcrystalline wax, and synthetic wax are preferably contained from the viewpoint of suppressing oil seepage and imparting appropriate hardness, moisture, and coating film durability.

One or more waxes that are solid at 25°C can be used. It is preferably 4% by mass or more, more preferably 5% by mass or more, further preferably 6% by mass or more, preferably 20% by mass or less, more preferably 18% by mass or less, and further 15% by mass or less. preferable. The content of wax that is solid at 25° C. is preferably 4 to 20% by mass, more preferably 5 to 18% by mass, and even more preferably 6 to 15% by mass in the total composition.

The lip cosmetic of the present invention can further contain color pigments other than components (A) and (B).
The coloring pigment is not limited as long as it is used in ordinary cosmetics, and examples include titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine blue, chromium oxide, chromium hydroxide, and the like. Metal oxides; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; , Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow Synthetic organic pigments such as No. 401, Blue No. 1 and Blue No. 404; and natural organic pigments such as β-carotene, caramel and paprika pigments.
Similar to components (A) and (B), these color pigments can also be used after being subjected to hydrophobic treatment or hydrophilic treatment.

One or more of these color pigments can be used, and the content is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and 0.1% by mass or more in the total composition. is more preferably 10% by mass or less, more preferably 7% by mass or less, and even more preferably 5% by mass or less. In addition, the content of color pigments other than components (A) and (B) is preferably 0.001 to 10% by mass, more preferably 0.01 to 7% by mass, and 0.1 to 5% by mass in the total composition. % is more preferred.

The lip cosmetic of the present invention can further contain a pearl pigment.
As the pearl pigment, any one that is used in ordinary cosmetics may be used. , silicon oxide, Prussian blue, chromium oxide, chromium hydroxide, gold, silver, carmine, or coated with a coloring agent such as an organic pigment.

In addition to the above ingredients, the lip cosmetic of the present invention contains ingredients that are used in ordinary cosmetics, such as powders other than those described above, oils other than those described above, waxes other than those described above, as long as the effects of the present invention are not impaired. Surfactants, lower alcohols, polyhydric alcohols, polymer compounds, ultraviolet absorbers, antioxidants, fragrances, preservatives, moisturizers, thickeners, water and the like can be contained.

The lip cosmetic of the present invention can be produced by a conventional method, for example, by heating and dissolving the base materials other than the coloring material, uniformly mixing, adding the coloring material, and further mixing. can be manufactured.
In addition, the lip cosmetic of the present invention can be obtained in solid or non-solid form, with solid form being preferred. It can be lipstick, lip balm, lip gloss, lip liner, and the like.

The lip cosmetic of the present invention, in particular, has a variable scattering coefficient between 600 nm and 700 nm. When the light is absorbed by the pigment, it is converted into heat energy, so the amount of light decreases. When the light is scattered, the light hits the pigment and changes its traveling direction, but the amount of light does not decrease. Therefore, dull lip colors tend to have lower overall reflectance than non-dull lip colors, so by "changing the scattering coefficient" in a specific wavelength range, This makes it possible to give vivid colors and a beautiful and natural finish.

Examples 1-10, Comparative Examples 1-5 (stick lipstick)
A stick lipstick (solid form) having the composition shown in Table 1 was produced, and vivid color development on dull lips, beautiful finish on dull lips, natural finish on dull lips, and vividness after 2 hours of application were evaluated. In addition, the reflectance (600 nm to 700 nm/550 nm to 590 nm) of the matte lip finish and the scattering coefficient (600 nm to 700 nm/550 nm to 590 nm) of the lipstick coating were measured. The results are also shown in Table 1.

(Production method)
A total amount of 300 g was blended using a 1 L container with a diameter of 130 mm and a disper blade with a diameter of 30 mm (rotation speed was 2500 r/min in the entire process). First, a base raw material containing component (C) and other oily components (other than component (A) and component (B) and other powdery component-containing colorants) is heated to 105° C., and the temperature is maintained. Uniformly mixed for 5 minutes. Next, a colorant containing components (A) and (B) and other powder components was added and mixed uniformly for an additional 2 minutes. After defoaming, it was cooled to room temperature and solidified. A required amount was cut out from this lipstick bulk, heated and melted at 100° C. using a microwave oven, poured into a mold, cooled and solidified to obtain a stick lipstick.

(Evaluation method)
(1) Vivid color on dull lips:
Each stick lipstick was applied to one subject with dull lips, and 10 expert panelists visually evaluated the finished color development according to the following criteria. The results were shown as the total score of 10 expert panelists.
5; Very vivid color develops on dull lips.
4; Vivid color develops on dull lips.
3; Slightly vivid color develops on dull lips.
2; Not very vivid color develops on dull lips.
1; No bright color develops on dull lips.

(2) Beautiful finish with dull lips:
Each stick lipstick was applied to one subject with dull lips, and 10 expert panelists visually evaluated the beauty of the finish according to the following criteria. The results were shown as the total score of 10 expert panelists.
5; Very beautiful finish with dull lips.
4; Beautifully finished with dull lips.
3; Slightly beautiful finish with dull lips.
2; The lips are dull and the finish is not very beautiful.
1; The lips are dull and do not have a beautiful finish.

(3) Natural finish with dull lips:
Each stick lipstick was applied to one subject with dull lips, and 10 expert panelists visually evaluated the naturalness of the finish according to the following criteria. The results were shown as the total score of 10 expert panelists.
5; Very natural finish with dull lips.
4; Natural finish with dull lips.
3; Slightly natural finish with dull lips.
2; Dull lips do not give a very natural finish.
1; The lips are dull and do not look natural.

(4) Vividness 2 hours after application:
Two hours after each stick lipstick was applied to one subject with dull lips, 10 expert panelists visually evaluated the finished color development according to the following criteria. The results were shown as the total score of 10 expert panelists.
5; Very vivid color development lasts for 2 hours after application on dull lips.
4; Vivid color development persists on dull lips for 2 hours after application.
3; Slightly vivid color development persists on dull lips for 2 hours after application.
2; 2 hours after application, dull lips do not retain bright color.
1; Bright color development does not last for dull lips for 2 hours after application.

(5) Reflectance for a dull lip finish:
One subject with dull lips applied each stick lipstick. Using the lips as a subject, using the white light source described in JP 2019-25292, and using a hyperspectral imaging device (product name "hyperspectral camera NH-7", manufactured by Eva Japan) as an imaging device, The reflectance was measured and the average value for each wavelength was obtained.
The results showed (1) reflectance from 550 to 590 nm, (2) reflectance from 600 to 700 nm, (2)/(1).
A larger value of (2)/(1) indicates a brighter finish.

(6) Scattering coefficient of lipstick coating film Each lipstick paste was applied onto a polyester transparent film using a coater having a thickness of 25 μm. Using a three-dimensional goniospectrophotometric colorimetry system GCMS-4B (manufactured by Murakami Color Research Laboratory), the reflectance of the coating film overlaid on the white substrate and the black substrate was measured. The measurement conditions were an incident angle of 45° and a light receiving angle of 0°. The scattering coefficient is calculated using the Kubelka-Munk theory, using the formula described in "Kubelka-Munk theory and its application" (Shikizai, 42, 1969, p.472-473), and for each wavelength. An average value was obtained.
The results showed (1) scattering coefficient from 550-590 nm, (2) scattering coefficient from 600-700 nm, (2)/(1).
A larger value of (2)/(1) indicates a brighter lipstick coating.

Claims (3)

The following components (A), (B) and (C):
(A) Plate-like powder coated with Red No. 202 0.01 to 15% by mass,
(B) Red No. 202 0.001 to 5% by mass, excluding component (A),
(C) 0.5 to 18% by mass of paste oil with a melting point of 33 to 60°C containing 75% by mass or more of a paste oil with a melting point of 33 to 55°C
A lip cosmetic containing The lip cosmetic composition according to claim 1, wherein the mass ratio (A)/(B) of component (A) to component (B) is 10-100. 3. The lip cosmetic according to claim 1, wherein component (C) contains 80% by mass or more of paste oil having a melting point of 33 to 55°C.