A stick-type solid lipstick, makeup kit, and beauty method that use a water-based cosmetic as a base.

A two-layer stick-type solid lipstick, combined with a water-based cosmetic, addresses the issue of long-lasting lip color and skin-beautification without drying, using oil-soluble ascorbic acid ester, vitamin E derivatives, and palmitoyl tripeptide to enhance adhesion and longevity.

JP2026059608APending Publication Date: 2026-04-07NARISU COSMETIC CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-26
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing lipsticks fail to provide long-lasting lip color improvement without drying out the lips and lack a skin-beautifying effect.

Method used

A two-layer stick-type solid lipstick with an inner core and outer layer, using oil-soluble ascorbic acid ester, vitamin E derivatives, and palmitoyl tripeptide, combined with a water-based cosmetic that thickens upon application to enhance adhesion and longevity.

Benefits of technology

The lipstick maintains moisture on the lips, ensuring long-lasting lip color and skin-beautifying effects without drying, while providing a luxurious sensory experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a lip cosmetic composition that does not burden the lips, has excellent lip color improvement effects, and also has excellent long-lasting effects. [Solution] A lipstick that is applied to the lips as a base coat, Component A: One or more selected from oil-soluble ascorbic acid ester, vitamin E and / or its derivatives, and palmitoyl tripeptide, Component B: Polyether-modified silicone A lipstick containing the above, further comprising a two-layer stick-shaped solid lipstick molded with an oily composition as the inner core and a solid oily composition as the outer layer. [Effects] The invented beauty method and two-layer stick-type solid lipstick provide a lip color improvement effect, and the lipstick's appearance and skin-beautifying effects last for a long time.
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Description

Technical Field

[0001] The present invention relates to a stick-shaped lipstick, a stick-shaped solid lipstick that can be used in combination with an aqueous cosmetic as a base, a makeup kit combining the aqueous cosmetic as its base and the stick-shaped solid lipstick, and a beauty method using them.

Background Art

[0002] A stick-shaped solid lipstick is suitable for convenient use and carrying. It not only helps with a beautiful appearance, but also has excellent soft and luxurious sensory properties when applied, its moisturizing and decorative effects last long, and it is required to continuously give a beauty effect to the lips themselves while applying. For example, Patent Document 1 discloses a product that has the effect of improving the color of the lips by applying lipstick. Also, Patent Document 2 discloses a product that is excellent in terms of usability and finish and has good makeup retention.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, Patent Document 1 did not offer particularly outstanding longevity for lipstick, so the intended lip color-improving effect could not be fully realized. Furthermore, while Patent Document 2 was groundbreaking in that it used the moisture of the lips themselves to extend the lipstick's lifespan, it could put a strain on the lips by causing them to lose moisture, and it could not be said to provide a skin-beautifying effect to the lips themselves. In other words, there was a need for a lip cosmetic composition that would not burden the lips, would have excellent lip color-improving effects, and would also have excellent long-lasting effects. [Means for solving the problem]

[0005] This invention is comprised of the following discoveries and technologies.

[0006] [Invention 1] A lipstick that is applied to the lips as a base coat, Component A: One or more selected from oil-soluble ascorbic acid ester, vitamin E and / or its derivatives, and palmitoyl tripeptide, Component B: Polyether-modified silicone A lipstick containing, moreover A two-layer stick-type solid lipstick, molded with an oily composition as the inner core and a solid oily composition as the outer layer.

[0007] [Invention 2] The inner core having a surface hardness of 3N or more and less than 7N, The invention described in Invention 1 is characterized by being covered with the outer layer having a surface hardness of 7N or more and less than 20N. A two-layered stick-type solid lipstick.

[0008] [Invention 3] A makeup kit comprising at least an aqueous cosmetic and a two-layer stick-type solid lipstick as described in Invention 1 or Invention 2, A makeup kit characterized by applying an aqueous cosmetic and a two-layer stick-type solid lipstick described in Invention 1 or Invention 2 in layers.

[0009] [Invention 4] The aqueous cosmetic composition The makeup kit according to Invention 3, characterized in that it contains component C: a water-soluble ascorbic acid derivative.

[0010] [Invention 5] A beauty method comprising applying the aqueous cosmetic to the lips immediately before applying a stick-type solid lipstick. [Effects of the Invention]

[0011] The present invention provides a beauty method and a two-layer stick-type solid lipstick that improves lip color, and the lipstick's appearance and skin-beautifying effects last for a long time. [Modes for carrying out the invention]

[0012] The present invention will be described in detail below. In this invention, when the blending amount is expressed as "%", it means mass percent. Also, in this invention, when numerical values ​​are connected by "~" to indicate a range, unless otherwise specified such as "less than ○○", the values ​​at both ends of the range are included.

[0013] Researchers have been diligently working to develop a stick-type solid lipstick that provides a skin-beautifying effect to the lips and has excellent makeup-lasting properties. They discovered that this problem can be solved by applying an aqueous cosmetic containing water and skin-beautifying ingredients to the lips before applying the lipstick, and then using a stick-type solid lipstick that contains even more skin-beautifying ingredients and an ingredient that thickens (gels) with the water in the aqueous cosmetic to provide a long-lasting makeup effect.

[0014] The water contained in the aqueous cosmetic applied as a base before applying the stick-type solid lipstick of this invention and the polyether-modified silicone contained in the lipstick applied afterward come into contact, causing the viscosity to increase (gel formation), which strongly adheres the lipstick to the lips. The lipstick thickens (gels) due to the sufficient moisture contained in the water-based cosmetic applied beforehand as a base. This prevents the lipstick from stripping moisture from the lips themselves, does not burden the lips, and is excellent at maintaining the beauty of the look immediately after application for a long time. Until now, the idea of using a water-based cosmetic as a base for an oil-based lipstick has been avoided due to the differences in the two properties and has not been achievable by ordinary technical common sense. However, as described above, the technology of the present application can obtain the effect of improving the lip color and the makeup persistence effect only when a water-based cosmetic and a specific lipstick are used in combination.

[0015] In addition, the active ingredients that improve the lip color can be retained on the lips and above the lips for a long time. For example, the effect of improving the lip color can be enhanced by combining palmitoyl tripeptide and an ester of ascorbic acid used as a whitening ingredient, vitamin E and / or its derivatives used as a blood circulation promoter. Patent Document 1 recognizes the effect of improving the lip color of the beauty ingredients contained in the lipstick. Surprisingly, it has been found that the use of the water-based cosmetic described in the present application as a base further enhances the actual feeling of the effect.

[0016] However, since the stick-shaped solid lipstick is composed of an oil-based component and is hydrophobic, it is not easy to uniformly apply the oil-based component to the lips in a hydrophilic state that is sufficiently wet with water in advance. Even when a water-based cosmetic is used before applying the lipstick, the inventor further intensively studied for the purpose of obtaining the same uniform coating property as when using a general stick-shaped solid lipstick.

[0017] As a result, it was found that the problem can be achieved with a soft oil-based composition. However, when commercializing, it is necessary to maintain market quality (quality standards that allow users to use the stick-shaped solid lipstick until the end without breaking, quality standards that allow users to continue using it for three years), and it is necessary to develop a lipstick by setting quality standards such as surface hardness standards. Although a soft oil-based composition can uniformly apply the oil-based component to the lips in a hydrophilic state that is sufficiently wet with water in advance, on the other hand, it cannot maintain market quality. The inventors continued their research and discovered that by using a molding technique for a multi-layered stick-shaped solid lipstick, which has an oil-soluble composition with a hardness of 1 to 75 g as the inner core and a solid oily composition containing solid and liquid oils as the outer layer, it is possible to provide a soft oily composition in the form of a stick-shaped solid lipstick that can be applied to lips that have been pre-moistened with water while maintaining quality, thus solving the problem of the present invention.

[0018] The "two-layer stick-type solid lipstick" of this application only needs to satisfy the objective of providing a soft, oily composition in the form of a stick-type solid lipstick that can be applied to lips that have been pre-moistened with water. For example, it is acceptable if a structure with three or more layers can achieve the same effect.

[0019] Furthermore, as an example of an embodiment, this application relates to a stick-type solid lipstick having a two-layer structure in which an oily composition with a surface hardness of 3N or more and less than 7N is used as the inner core, and the outer layer is covered with an oily composition with a surface hardness of 7N or more and less than 20N.

[0020] The surface hardness values ​​used as an indicator of the softness of the stick-type solid lipstick were obtained using the following measurement method. In other words, the surface hardness of the inner core and outer layer of the two-layer stick-type solid lipstick of this application were also measured using the following method. For surface hardness measurement, a FUDOH rheometer RT-2020ND-D manufactured by Rheotec Co., Ltd. was used. The adapter used was a toothed push rod A (long axis 15 mm, short axis 5 mm), and the peak stress value (in N) was expressed when the push rod was inserted 3 mm from above (3 mm after the toothed push rod contacted the surface as detected by the sensor) at a speed of 30 mm / min. into the surface of the sample molded in a plastic dish. The sample was poured into a 5mm deep plastic container at 90°C, allowed to stand at room temperature for 3 minutes, and then cooled to -10°C for 5 minutes. After curing, the sample was incubated in a 20°C incubator for 24 hours before measurement.

[0021] The oil-soluble ascorbic acid ester, which is component A used in the present invention, can be, for example, oil-soluble ascorbic acid derivatives such as tetra-2-hexyldecanoate ascorbyl, L-ascorbic acid monostearate, and L-ascorbic acid dipalmitate. Commercially available products such as Nikko VC-IP (manufactured by Nikko Chemicals Co., Ltd.) can be used.

[0022] The amount of oil-soluble ascorbic acid ester included is preferably 0.1 to 10.0% of the total lipstick composition, and more preferably 0.5 to 5.0%.

[0023] Similarly, examples of vitamin E and / or its derivatives used as component A include tocopherol acetate and tocopherol nicotinate. Commercially available products include E-Mix D (manufactured by Eisai Co., Ltd.).

[0024] The amount of vitamin E and / or its derivatives included in the total lipstick composition is preferably 0.1 to 10.0%, and more preferably 0.5 to 5.0%.

[0025] Similarly, palmitoyl tripeptides used as component A include synthetic peptides such as palmitoyl-glycyl-histidine-lysine. Commercially available products include MaxiLip (manufactured by Sederma). Palmitoyl peptides increase lip volume, create a defined contour, and have excellent moisturizing effects.

[0026] The amount of palmitoyl tripeptide included in the total lipstick composition is preferably 0.0001 to 1.0%, more preferably 0.001 to 0.1%, but is not limited thereto.

[0027] In the present invention, when synthetic palmitoyl tripeptide and oil-soluble ascorbic acid ester are used in combination with vitamin E and / or its derivatives, the effect of improving lip color is significantly enhanced.

[0028] For the polyether-modified silicone component B, examples include those with a silicone main chain and polyoxyethylene groups in the side chains (for example, "KF-6017" manufactured by Shin-Etsu Chemical Co., Ltd., which is PEG10-dimethicone), and polyoxyalkylene alkyl-comodified organopolysiloxanes (for example, "5200 Formulation Aid" manufactured by Toray Dow Corning, which is lauryl PEG / PPG-18 / 18 methicone). Furthermore, examples of silicones with branched organopolysiloxane groups as the main chain and polyoxyalkylene groups grafted onto it (silicone-branched polyether-modified silicones) include PEG-9 polydimethylsiloxyethyl dimethicone (commercially available, for example, "KF-6028" manufactured by Shin-Etsu Chemical Co., Ltd.), lauryl PEG-9 polydimethylsiloxyethyl dimethicone (commercially available, for example, "KF-6038" manufactured by Shin-Etsu Chemical Co., Ltd.), and cetyl PEG-9 polydimethylsiloxyethyl dimethicone. Component B can be used alone or in combination of two or more types. It is preferable that its content in the total lipstick composition be 0.1% or more, more preferably 0.5% or more, even more preferably 1% or more, and from the viewpoint of not hindering the luxurious sensory aspect, it is preferable to be 20% or less, and even more preferably 10% or less. In other words, 1-10% is the most preferable.

[0029] The amounts of components A and B in the total lipstick composition are described above. It is preferable to incorporate them at the same concentration in both the inner core and the outer layer, but the effects of this invention can still be achieved even if they are only included in the inner core. For example, it is acceptable if the concentrations in the inner core and the outer layer are different.

[0030] The C component included in the aqueous cosmetic applied to the lips beforehand is a water-soluble ascorbic acid derivative. Examples include ascorbic acid glucoside, magnesium ascorbic acid phosphate, and sodium ascorbic acid phosphate. Commercially available products such as AS-G (manufactured by Hayashibara Biochemical Laboratories) can be used.

[0031] The amount of water-soluble ascorbic acid derivative included is preferably 0.1 to 10.0% of the total aqueous cosmetic composition, and more preferably 0.5 to 5.0%.

[0032] The above-mentioned aqueous cosmetic composition may contain aqueous components other than water, and is not particularly limited, but may contain components generally found in aqueous cosmetic compositions. For example, one or more types of polyols or water-soluble humectants may be appropriately combined and blended. Furthermore, the present invention is valid even if the water-based cosmetic consists only of water.

[0033] Other ingredients can be used in combination with the stick-type solid lipstick of the present invention. While not particularly limited, trimethylsiloxysilicate, which generally provides a long-lasting makeup effect, can also be included.

[0034] Furthermore, non-volatile oils commonly used in lipsticks can be used. For example, linear or branched hydrocarbon oils such as liquid paraffin, light isoparaffin, mineral oil, polybutene, polyisobutene, hydrogenated polyisobutene, hydrogenated polydecene, and squalane; vegetable oils such as macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil, jojoba oil, sunflower oil, and camellia oil; animal oils such as liquid lanolin; isopropyl myristate, octyldodecyl myristate, and isostearin Isopropyl acid, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate, isostearyl myrithrate, octyldodecyl ricinoleate, octyl hydroxystearate, ethylhexyl palmitate, cetyl ethylhexanoate, octyl methoxycinnamate, propylene carbonate, propylene glycol dicaprylate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, propanediol diisostearate, mo Glyceryl monomyristate diisostearate, propanediol dicaprate / caprylate, glyceryl tri(caprylate / caprate), glyceryl tri-2-ethylhexanoate, triethylhexanoin, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, dipentaerythrityl tetraoctanoate, pentaerythrityl tetraethylhexanoate, polyglyceryl-6 octacaprylate, ditrimethiastriyl isostearate / sebacate Fatty acid esters such as tyrolpropane oligoester tripolyhydroxystearate dipentaerythrityl, lauroyl glutamate di(phytosteryl / octyldodecyl), lauroyl glutamate di(phytosteryl / behenyl / octyldodecyl), ethylhexyl hydroxystearate, phytosterol fatty acid esters, cholesterol fatty acid esters, polyglycerol fatty acid esters, pentaerythritol fatty acid esters, etc.; higher alcohols such as octyldodecanol;Silicone oils such as diphenyl dimethicone, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher alcohol-modified organopolysiloxane, and trimethylpentaphenyltrisiloxane; fluorine oils such as fluoropolyethers and perfluoroalkyl ether silicones; trilanolin fatty acid glyceryl, petrolatum, branched or hydroxylated fatty acid cholesteryl, dipentaerythrityl fatty acid ester, hexa(hydroxystearate / stearate / rosinate)dipentaerythrityl, tetra(hydroxystearate / isostearate)dipenta Examples of liquid, cream, and paste-type oils include erythrityl, pentaerythrityl tetraisostearate, hydrogenated castor oil isostearate, hydrogenated castor oil monohydroxystearate, caprylic / caprine / myristic / stearic acid triglyceride, hydrogenated castor oil dimer dilinoleate, phytosteryl dimer dilinoleate, bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, phytosteryl oleate, and di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate.

[0035] One method for manufacturing the two-layer stick-type solid lipstick of the present invention is to heat, melt, and pour the oily component constituting the outer layer into a mold in which the inner core portion has been pre-filled into a rod-shaped mold, allow it to cool and solidify, then remove the mold for the inner core portion, heat, melt, and pour the oily composition that will form the inner core portion into the resulting void, allow it to cool and solidify. By changing the thickness of the rod-shaped mold inserted into the inner core portion, the composition ratio of the inner core portion to the outer layer portion can be adjusted.

[0036] To achieve the above effects, it is desirable that sufficient moisture remains on the lips when applying lipstick. In other words, it is desirable that the water-based cosmetic base be applied within 5 minutes, more preferably within 1 minute, immediately before applying lipstick. When a water-based cosmetic was not used as a base, no significant makeup-lasting effect was observed, and with a base that did not contain an ascorbic acid derivative, no lip color improvement effect exceeding that of Patent Document 1 was observed.

[0037] In the present invention, "aqueous cosmetic composition" refers to a composition containing 83% or more water that thickens (gels) when mixed with component B in the lipstick when the lipstick of this invention is applied in layers. The amount of water is preferably 85% or more, and even more preferably 90% or more. The term "thickening" (gelling) used here does not refer to something that is felt during use, but rather to a theoretical phenomenon, as described by this researcher. In this way, the aqueous cosmetic thickens (gels) and acts as a binder between the oily composition and the lips, allowing the oily composition to remain on the lips for a long time while retaining moisture, thereby enhancing the long-lasting effect of the cosmetic.

[0038] In the present invention, "oil-based composition" means a composition consisting of oil-based components and substantially free of water. In this case, "substantially free of water" means a composition that does not affect the thickening (gelling) properties when applied in layers to the aqueous cosmetic composition of this application, and it is acceptable if it contains 3.0% or less of water and / or aqueous components, as long as this does not pose a problem for implementing the present invention. [Examples]

[0039] The present invention will be described in more detail below with reference to examples. However, the present invention is not limited to these examples. First, the following experiment was conducted as a preliminary test. In this preliminary test stage, usability was not a concern (it was not important that the lipstick was in a two-layer stick form), so the single oil composition shown in the examples was used as the lipstick for the test. • We investigated the effect of applying water-based cosmetics on "1: Makeup longevity." • The effects of components A and C on "2: Lip color improvement effect" were confirmed. As data to support the idea of ​​creating a two-layer lipstick, we examined the effect of lipstick surface hardness on "3: Lipstick application." From this point onward, taking into account the results of the preliminary tests, we conducted the main test using a two-layer stick lipstick. We confirmed that even in a two-layer stick lipstick with a soft surface hardness lipstick core, good "3: lipstick application" can be obtained, similar to a single oil-based composition. At the same time, we examined the effect of the amount of component B on "lipstick application." ("4: Lipstick Application") ("4: Examination of the amount of ingredient B to be included") • We examined the effect of the amount of ingredient B on the "feel" of the product. ("4: Luxurious feel of lipstick") ("4: Examination of the amount of ingredient B") We confirmed that even in a two-layer stick lipstick with a soft surface lipstick core, a good "1: makeup longevity effect" can be obtained, similar to that of a single oil-based composition. At the same time, we examined the effect of the amount of component B on the "makeup longevity effect." ("4: Makeup Longevity Effect of Lipstick") ("4: Examination of the Amount of Component B") • We investigated the effect of the amount of water added to water-based cosmetics on the amount of lipstick that adheres after application. ("5: Examination of the amount of water added to water-based cosmetics")

[0040] <1: Makeup-lasting effect: Confirmation of the makeup-lasting effect when water or an aqueous cosmetic containing water and ascorbic acid derivative is applied before using lipstick> A comparative experiment was conducted to assess the longevity of lipstick when the lips were coated with the aqueous cosmetic shown in Table 1 or water alone before applying lipstick, and when nothing was applied as a comparative example. After the lips were sufficiently moistened with the aqueous cosmetic or water, or when nothing was applied, the lipstick shown in Table 3, Study 4 was applied, and the longevity of each was evaluated. The evaluation method involved five expert panelists actually applying the samples and evaluating the state of the lipstick from immediately after application to 3 hours later, including lunch, according to the following criteria. The results are expressed as the total score of the five panelists and are listed in the same Table 1. A total score of 15 or higher was judged to indicate good longevity, and a score of 10 or lower was judged to indicate poor longevity. 4: The color and lipstick are all still there. 3: The color, the lipstick, is almost completely gone. 2: Some color and lipstick remain. 1: The color, the lipstick, is gone.

[0041] <Manufacturing method> (Example 1) Add pre-dissolved components b, c, d, and e to group a, stir until dissolved, then add f and mix uniformly before removing.

[0042] [Table 1]

[0043] <Result> As is clear from the results in Table 1, when an aqueous cosmetic containing an ascorbic acid derivative, which is an embodiment of the present invention, or water was applied, and then the lipstick shown in Table 3, Study 4 was applied, the makeup's staying power was clearly improved compared to when nothing was applied. Furthermore, no negative comments such as dryness were received after removing the makeup.

[0044] <2: Lip color improvement effect: Confirmation of the lip color improvement effect when a stick lipstick containing the active ingredient oil-soluble ascorbic acid ester, vitamin E and / or its derivatives, palmitoyl peptide, and polyether-modified silicone, which thickens (gels) with the water in the aqueous cosmetic and provides a long-lasting makeup effect and color transfer prevention effect, is applied to the lips as a base after applying an aqueous cosmetic containing the active ingredient ascorbic acid derivative to the lips, and while the base is still wet.> (Sensory evaluation) The aqueous cosmetic products shown in Table 2 were applied to the lips, and after 1 minute, the stick-type lipstick shown in Table 3, Study 4 was applied to evaluate the effect on improving lip color. For the evaluation method, five expert panelists actually applied the samples and evaluated the lip color before use and 5 weeks after use. In Comparative Example 1, no water-based cosmetic was used; instead, lipstick was applied directly to the lips.

[0045] The sensory evaluation criteria were as follows, and the results are shown in Table 2. The results are shown as the average of 5 participants. 1. The color of the lips has turned reddish-brown. 2. My lips have become darker in color. 3. The color of the lips doesn't change much. 4. The color of my lips has become lighter. 5. My lips have turned a bright pink color.

[0046] (Color measurement evaluation) Furthermore, the lip color of five expert panelists was measured before using the sample and after 5 weeks of use. The color measurement method was as follows.

[0047] Measuring instrument: Spectrophotometer CM-700d (manufactured by Konica Minolta) Measurement conditions: After cleaning the lip surface with a cleaning agent, L*a*b* (JIS Z 8729) was measured.

[0048] The change in the a* value (Δa*) indicating redness in L*a*b* was evaluated, and the color measurement results of the lips are shown in Table 2. The evaluation criteria are as follows. ◎: Δa* is 0.5 or greater. ○: Δa* is 0.2 or greater and less than 0.5. △: Δa* is greater than or equal to 0 and less than 0.2. ×: Δa* is less than 0.

[0049] (Lipstick manufacturing method described in Table 3, Examination 4) Groups a, b, and c were heated, stirred, and dissolved, then d was added and the mixture was uniformly mixed using a three-roll mill. The mixture was then reheated, f was added, and stirred. The mixture was then poured into a lipstick mold with a diameter of 12 mm and cooled to form the final product. The removed lipstick was then placed into a container to obtain the finished product.

[0050] [Table 2]

[0051] [Table 3]

[0052] <Result> As is clear from the results in Table 2, by continuously using for 5 weeks a lotion containing component C, an ascorbic acid derivative, and a lipstick containing component A, an oil-soluble ascorbic acid ester, vitamin E and / or its derivative, and palmitoyl tripeptide, and simultaneously thickening (gelling) with the lotion components and containing component B, a polyether-modified silicone, which provides a long-lasting makeup effect and prevents color transfer, a remarkable lip beautification method, makeup method, combination, and formulation that surpasses Technical Document 1 in improving lip color was achieved.

[0053] <3: Lipstick application: Check that the lipstick is suitable for application to lips that have been sufficiently moisturized with lotion beforehand.> We confirmed whether the stick lipstick could be applied after thoroughly moistening the lips with water beforehand. The formulation examples we examined are shown in Table 3.

[0054] The evaluation method involved having five expert panelists thoroughly moisten their lips with water, then applying lipstick samples, and evaluating the degree of lipstick application. The evaluation criteria were as follows, and the total scores from the five participants are shown in Table 3, indicating the evaluation of sensory perception.

[0055] 4. The color and lipstick are applied properly. 3: The color, the lipstick, is almost completely applied. 2: The color, or lipstick, is not applied sufficiently. 1: The color, or rather, the lipstick, is barely applied.

[0056] (Surface hardness) Furthermore, the surface hardness, which represents the hardness of the samples in Table 3, was measured.

[0057] The surface hardness was measured using the method described above. Note that the data represents the average of four data points for each category.

[0058] <Result> As is clear from the results in Table 3, unless the surface hardness is less than 7N, lipstick cannot be adequately applied to moistened lips.

[0059] However, although we were able to mold this soft, stick-shaped lipstick, we were unable to maintain its quality, including its break resistance.

[0060] Next, the inventor created a lipstick using Study 4 (shown in Table 3) as the inner core and Study 1 as the outer layer, and re-examined its sensory properties (adhesion, luxurious feel) and makeup longevity. At the same time, a detailed examination of the amount of component B was conducted.

[0061] <4: Create a two-layer lipstick and examine its sensuality (adhesion, luxurious feel) and longevity. Simultaneously, examine the amount of ingredient B to include.> Two-layer lipsticks were created using the oily composition described in Table 4 as the inner core and the solid oily composition described in Table 3, Study 1 as the outer layer. Five expert panelists applied the aqueous cosmetic from Table 1, Example 1, to their lips, and then applied each lipstick within one minute. They were then asked to evaluate the sensory properties (adhesion, luxurious feel) and the longevity of the makeup. In this context, a luxurious feel refers to a non-sticky, smooth, and easily spreadable texture.

[0062] The evaluation criteria for sensory perception were as follows, and the total scores for the five participants are shown in Table 4, indicating the evaluation of sensory perception.

[0063] 4. The color and lipstick are applied properly. 3: The color, the lipstick, is almost completely applied. 2: The color, or lipstick, is not applied sufficiently. 1: The color, or rather, the lipstick, is barely applied.

[0064] The evaluation criteria for sensory perception (luxurious feel) were as follows, and Table 4 shows the total scores from the five participants, indicating the evaluation of sensory perception (luxurious feel). 4: It's not sticky at all and spreads very smoothly. 3: It feels a little sticky, but spreads smoothly. 2: It feels sticky and doesn't spread smoothly. 1: It feels very sticky and doesn't spread smoothly at all.

[0065] The makeup longevity evaluation method involved five expert panelists applying samples and evaluating the lipstick's condition from immediately after application to three hours later, including lunch, according to the following criteria. The results are expressed as the total score from the five panelists and are listed in Table 4. A total score of 15 or higher was considered long-lasting, while a score of 10 or lower was considered not long-lasting. 4: The color and lipstick are all still there. 3: The color, the lipstick, is almost completely gone. 2: Some color and lipstick remain. 1: The color, the lipstick, is gone.

[0066] <Method for manufacturing lipstick using the oily composition described in Table 4 as the inner core and the solid oily substance described in Table 3 Study 1 as the outer layer> Groups a, b, and c were heated, stirred, and dissolved, then d was added and the mixture was uniformly mixed using a three-roll mill. The mixture was then reheated, f was added, and stirred to obtain the solid oil composition shown in Table 3, Study 1, which forms the outer layer. Subsequently, the solid oily composition was heated, melted, and poured into a mold in which the inner core portion had been pre-filled into a rod-shaped mold. After cooling and solidifying, the mold for the inner core portion was removed, and the oily composition shown in Table 4 was heated, melted, and poured into the resulting void using the same manufacturing method as the solid oily composition described above. This was then cooled and solidified to obtain a two-layer lipstick. Upon inspection after removal, the mass ratio of the inner core portion to the outer layer was found to be 85:15.

[0067] [Table 4]

[0068] <Result> • Sensual (with) As is clear from the results, the sensory evaluation (adhesion) of the two-layer lipstick, in which the oily composition of Study 4 was used as the inner core and the solid oily composition of Study 1 as the outer layer, was excellent, similar to the results in Table 3, which evaluated only the oily composition of Study 4. • Sensual (luxurious feel) As is clear from the results, the product containing 10% of component B received a low sensory evaluation (for luxurious feel), and the product containing 20% ​​received an even lower evaluation. • Makeup-lasting effect As is clear from the results, it was confirmed that the makeup-lasting effect was low when component B was less than 1%, and high when it was 1% or more.

[0069] <5: Amount of lipstick adhering after application: Examination of the amount of water in the aqueous cosmetic product> Water-based cosmetics as described in Table 5 were prepared and applied to the lips of five expert panelists. Within one minute, they were then asked to apply lipstick (inner core: Table 3 Study 4, outer layer: Table 3 Study 1) and rate the amount of lipstick that adhered after application. The evaluation criteria were as follows, and the total scores of the five panelists are shown in Table 5.

[0070] 4. The color and lipstick are applied properly. 3: The color, the lipstick, is almost completely applied. 2: The color, or lipstick, is not applied sufficiently. 1: The color, or rather, the lipstick, is barely applied.

[0071] [Table 5]

[0072] <Result> As is clear from the results, it was confirmed that a water content of 82.76% did not result in sufficient lipstick application, and at 72.76%, it was almost impossible to apply any lipstick at all. [Industrial applicability]

[0073] This invention makes it possible to provide the market with a lip cosmetic composition that does not burden the lips, has excellent lip color improvement effects, and has excellent long-lasting effects, through a novel discovery of using an aqueous cosmetic in combination with a two-layer stick-type solid lipstick.

Claims

1. A lipstick that is applied to the lips as a base coat, Component A: One or more selected from oil-soluble ascorbic acid ester, vitamin E and / or its derivatives, and palmitoyl tripeptide, Component B: Polyether-modified silicone A lipstick containing, moreover A two-layered stick-shaped solid lipstick, molded with an oily composition as the inner core and a solid oily composition as the outer layer.

2. The inner core having a surface hardness of 3N or more and less than 7N, The two-layer stick-shaped solid lipstick according to claim 1, characterized in that it is covered with the outer layer having a surface hardness of 7N or more and less than 20N.

3. A makeup kit comprising at least an aqueous cosmetic and a two-layer stick-type solid lipstick as described in claim 1 or claim 2, A makeup kit characterized by applying a water-based cosmetic and a two-layer stick-type solid lipstick as described in claim 1 or claim 2.

4. The aqueous cosmetic composition The makeup kit according to claim 3, characterized in that it contains component C: a water-soluble ascorbic acid derivative.

5. A beauty method in which a water-based cosmetic is applied to the lips immediately before applying a stick-type solid lipstick.

Citation Information

Patent Citations

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  • Lipstick composition

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    JP2008105951A