Lip cosmetics

Abstract

To provide labial cosmetics that ensure long-lasting makeup and achieve a good use experience.SOLUTION: Labial cosmetics contain (A) a specific nonionic surfactant: 1 mass% or more relative to the total amount of the cosmetics, (B) a volatile oil: 15 mass% or more relative to the total amount of the cosmetics, and (C) an oil-soluble coating agent: 12 mass% or less relative to the total amount of the cosmetics.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to a cosmetic product for the lips. [Background technology]

[0002] Wearing masks has become commonplace for the purpose of preventing infections such as viruses and for allergy relief from pollen, creating a demand for lip cosmetics that do not easily adhere to masks and have good staying power. As an example of a lip cosmetic that does not easily adhere, a cosmetic containing a blocked alkylene oxide derivative and dimethyldiphenylpolysiloxane has been proposed (for example, Patent Document 1).

[0003] Oil-based cosmetics are a common type of cosmetic formulation used in eye shadows, eyeliners, lipsticks, and the like. To improve the longevity of oil-based cosmetics, it has been suggested to incorporate film-forming agents (for example, Patent Document 2). However, high concentrations of film-forming agents can cause tightness, dryness, and, over time, lead to flaking. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2011-42610 [Patent Document 2] Japanese Patent Publication No. 2009-057308 [Overview of the Initiative]

[0005] The inventors have surprisingly discovered that by using a lip cosmetic containing a specific combination of a particular nonionic surfactant and a volatile oil in a certain amount or more, it is possible to achieve long-lasting makeup and excellent usability without incorporating a high concentration of film-forming agents. This invention is based on these findings.

[0006] The present invention provides the following: [1] A lip cosmetic, (A) 1% by mass or more of a nonionic surfactant selected from the group consisting of polyoxyethylene fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene octyldodecyl ethers, alkyl phosphate esters, polyoxyethylene glyceryl stearate, polyoxyethylene sorbitan fatty acid esters, glycerin fatty acid esters, alkylene oxide derivatives, and based on the total amount of the cosmetic, (B) Volatile oils in an amount of 15% by mass or more relative to the total amount of cosmetics It includes, (C) A lip cosmetic in which the amount of oil-soluble film-forming agent is 12% by mass or less of the total amount of the cosmetic. [2] The cosmetic composition according to [1], wherein component (A) is selected from the group consisting of alkylene oxide derivatives and glycerin fatty acid esters. [3] The cosmetic composition according to [1] or [2], wherein component (A) is a blocked alkylene oxide derivative represented by the following formula (I). R 1 O-[(AO) l (EO) m (AO) n -R 2 (I) (In the formula, AO is an oxyalkylene group with 3 to 4 carbon atoms. EO is an oxyethylene group, l, m, and n are the average number of moles added, where 1 ≤ m ≤ 70 and 1 ≤ l + n ≤ 70. The proportion of oxyethylene groups to the total number of oxyalkylene groups with 3 to 4 carbon atoms and oxyethylene groups is 20 to 80% by mass. R 1 and R 2 (Each of these is independently a hydrocarbon group with 1 to 4 carbon atoms or a hydrogen atom.) [4] The cosmetic composition according to any one of claims [1] to [3], wherein the amount of component (A) is 5 to 30% by mass of the total amount of the cosmetic composition. [5](C) The cosmetic composition according to any one of [1] to [4], wherein the oil-soluble film-forming agent is selected from the group consisting of urethane-based film-forming agents, acrylic-based film-forming agents, vinyl-based film-forming agents, and silicone-based film-forming agents. [6](C) The cosmetic composition according to any one of [1] to [5], wherein the amount of oil-soluble film-forming agent blended is 0 to 5% by mass relative to the total amount of the cosmetic composition. [7](D) A cosmetic composition according to any one of [1] to [6], wherein the amount of water is 0 to 20% by mass. [8](E) A cosmetic composition according to any one of [1] to [7], further comprising a non-volatile oil. [9](F) A cosmetic composition according to any one of [1] to [8], further comprising a colorant.

[0007] According to the present invention, it is possible to provide a lip cosmetic that has good staying power and achieves a superior feel. Specific description of the invention

[0008] The present invention relates to a lip cosmetic (hereinafter sometimes referred to as "cosmetic") comprising (A) 1% by mass or more of a nonionic surfactant relative to the total amount of the cosmetic, and (B) 15% by mass or more of a volatile oil relative to the total amount of the cosmetic, wherein (C) the amount of an oil-soluble film-forming agent is 12% by mass or less relative to the total amount of the cosmetic.

[0009] (A) Nonionic surfactant The cosmetic composition according to the present invention comprises (A) a nonionic surfactant selected from the group consisting of polyoxyethylene fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene octyldodecyl ethers, alkyl phosphate esters, polyoxyethylene glyceryl stearate, polyoxyethylene sorbitan fatty acid esters, glycerin fatty acid esters, and alkylene oxide derivatives, in an amount of 1% by mass or more based on the total amount of the cosmetic composition (hereinafter sometimes referred to as component (A). The same applies to other components. Component (A) is preferably selected from the group consisting of alkylene oxide derivatives and glycerin fatty acid esters, and more preferably is an alkylene oxide derivative.

[0010] Examples of polyoxyethylene fatty acid esters include PEG-6 distearate and PEG-20 stearate. Examples of polyethylene glycol fatty acid esters include PEG-8 diisostearate and PEG-12 diisostearate. Examples of polyoxyethylene alkyl ethers include Steareth-4 and Oleth-5. Examples of polyoxyethylene polyhydric alcohol fatty acid esters include PEG-20 glyceryl triisostearate and PEG-20 glyceryl triisostearate. Examples of polyoxyethylene hydrogenated castor oil include PEG-20 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and PEG-100 hydrogenated castor oil. Examples of polyoxyethylene octyldodecyl ethers include octyldodeceth-16 and octyldodeceth-20. Examples of alkyl phosphate esters include tri(C12-15)pareth-10 phosphate. Examples of polyoxyethylene glyceryl stearate include PEG-5 glyceryl stearate. Examples of polyoxyethylene sorbitan fatty acid esters include polysorbate 60. Examples of glycerin fatty acid esters include polyglyceryl-5 triisostearate, polyglyceryl-10 diisostearate, and polyglyceryl-2 diisostearate. Examples of alkylene oxide derivatives include PEG / poly-1,2-butanediol-52 / 32 dimethyl ether.

[0011] The alkylene oxide derivative is preferably a block-type alkylene oxide derivative, more preferably a block-type alkylene oxide derivative represented by the following formula (I). R 1 O-[(AO) l (EO) m (AO) n -R 2 (I) In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, preferably an oxypropylene group, oxybutylene group, oxyisobutylene group, oxytrimethylene group, or oxytetramethylene group, and more preferably an oxypropylene group or oxybutylene group. EO is an oxyethylene group. l, m and n are each an average addition mole number, 1≦m≦70 (preferably 5≦m≦55), 1≦l+n≦70 (preferably 5≦l+n≦60), the proportion of oxyethylene groups relative to the total of oxyalkylene groups having 3 to 4 carbon atoms and oxyethylene groups is 20 to 80% by mass. R 1 and R 2 are each independently a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, preferably a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, or tert-butyl group, and more preferably a methyl group or an ethyl group.

[0012] While not bound by theory, it is believed that the inclusion of component (A) causes the cosmetic, after being applied to the lips, to react with water evaporating from the lips or moisture within the mask, forming a flexible film. This flexible film is presumed to contain gel-like components derived from the ingredients in the cosmetic. This film is thought to improve the longevity of the makeup and enhance usability, such as the feeling of moisture over time. (A) One or more components may be included. The amount of component (A) is 1% by mass or more, preferably 1 to 30% by mass, more preferably 3 to 30%, and even more preferably 7 to 15% by mass, relative to the total amount of the cosmetic.

[0013] (B) Volatile oils The cosmetic composition according to the present invention comprises (B) a volatile oil. In the present invention, (B) the volatile oil refers to an oil having a boiling point of less than 300°C at 1 atmosphere, and is preferably a volatile oil that is fluid at room temperature (25°C). Component (B) is preferably selected from the group consisting of isoparaffinic hydrocarbon oils and silicone oils with low boiling points (boiling point of 260°C or less at normal pressure). Examples of low-boiling point isoparaffinic hydrocarbon oils include isododecane and isohexadecane. Low boiling point silicone oils include cyclic dimethylpolysiloxanes with 4 to 6 silicon atoms, and chain-like dimethylpolysiloxanes with 2 to 5 silicon atoms. Specifically, these include cyclic silicone oils such as cyclopentasiloxane, hexamethylcyclotrisiloxane, octamethyltetracyclosiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, as well as linear or branched silicone oils with a viscosity of less than 5 cs (for example, dimethicone (viscosity less than 5 cs)).

[0014] (B) One or more components may be included. The amount of (B) component is 15% by mass or more, preferably 20-80% by mass, and more preferably 25-60% by mass, based on the total amount of the cosmetic. This amount of (B) component provides a fresh feeling when applied and a feeling of adhesion to the lips after application.

[0015] (C) Oil-soluble coating agent The cosmetic composition according to the present invention may contain (C) an oil-soluble film-forming agent. Component (C) is preferably selected from the group consisting of urethane-based coating agents, acrylic-based coating agents, vinyl-based coating agents, and silicone-based coating agents. Examples of urethane-based coating agents include polyurethane-10, polyurethane-24, and (polyurethane-24 / methyl methacrylate) crosspolymer. Examples of acrylic coating agents include ethyl polyacrylate, methyl polyacrylate, sodium polyacrylate, polyethyl acrylate, polyacrylamide, and (acrylates / polytrimethylsiloxy methacrylate) copolymer. Examples of vinyl-based coating agents include (vinylpyrrolidone / eicosene) copolymer, polyvinyl alcohol, and (vinylpyrrolidone / vinyl acetate (VA)) copolymer. Examples of silicone-based coating agents include trimethylsiloxysilicate, silicone-modified pullulan, (trimethylsiloxysilicate / dimethiconol) crosspolymer, and tri(trimethylsiloxy)silylpropylcarbamate pullulan.

[0016] Oil-soluble film-forming agents are generally incorporated into makeup cosmetics, such as lip cosmetics, to prevent makeup from smudging and to improve its longevity. However, if the amount of oil-soluble film-forming agent is too high, it can cause tightness and dryness, and may also cause flaking over time. Here, "flaking" typically refers to eraser-like particles that form when skin is rubbed after applying cosmetics containing a relatively large amount of powder or polymer components. In this invention, even when the amount of oil-soluble film-forming agent is small, a flexible film can be formed by component (A), thus improving the longevity of cosmetics, such as color retention, over time. In order to suppress the deterioration of usability and the generation of flaking as described above, it is preferable that the amount of component (C) is small or not included in this invention. (C) One or more components may be included. The amount of component (C) is 12% by mass or less of the total amount of the cosmetic, preferably 0 to 5% by mass, more preferably 0 to 1% by mass, even more preferably 0 to 0.1% by mass, and most preferably 0% by mass.

[0017] (D)Water The cosmetic composition according to the present invention may further contain (D) water. As the water, water used for cosmetics, quasi-drugs, etc., can be used, for example, purified water, ion-exchanged water, tap water, etc. The amount of water added is preferably 0 to 20% by mass, more preferably 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass, relative to the total amount of the cosmetic composition according to the present invention.

[0018] (E) Non-volatile oils The cosmetic composition according to the present invention may further contain (E) a non-volatile oil. In the present invention, (E) a non-volatile oil refers to an oil having a boiling point of 300°C or higher at 1 atmosphere. Component (E) is preferably selected from the group consisting of non-volatile silicone oil, non-volatile hydrocarbon oil, and non-volatile ester oil, and more preferably selected from the group consisting of non-volatile hydrocarbon oil and non-volatile ester oil.

[0019] Examples of non-volatile silicone oils include dimethicone, diphenyldimethicone, and diphenylsiloxyphenyltrimethicone.

[0020] Examples of non-volatile hydrocarbon oils include α-olefin oligomers, squalane, hydrogenated polydecene, hydrogenated polyisobutene, and petrolatum, with hydrogenated polyisobutene having a boiling point of 300°C or higher at 1 atmosphere being preferred.

[0021] Examples of non-volatile ester oils include diisostearyl malate, pentaerythrityl tetraethylhexanoate, glyceryl diisostearate, dipentaerythrityl hexahydroxystearate, (polyglyceryl-2 isostearate / dimer dilinoleate) copolymer, dimer dilinoleyl dimer dilinoleate, (phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, and (bis(lauroyl glutamate / lauroyl sarcosine) dimer dilinoleyl).

[0022] (E) One or more components may be included. The amount of component (E) is preferably 5 to 80% by mass, and more preferably 10 to 60% by mass, relative to the total amount of the cosmetic.

[0023] (F) Color material The cosmetic composition according to the present invention may further contain (F) a colorant. Examples of component (F) include water-soluble dyes, inorganic pigments, organic pigments, and the like.

[0024] Examples of water-soluble dyes include Red No. 227, Yellow No. 4, Yellow No. 5, Blue No. 1, and Red No. 230(1). Examples of inorganic pigments include inorganic powders such as talc, kaolin, mica, sericite, muscovite, biotite, phlogopite, synthetic mica, silica, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluorapatite, hydroxyapatite, and ceramic powder; inorganic white pigments such as titanium dioxide and zinc oxide; inorganic red pigments such as iron oxide (red iron oxide) and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and ochre; inorganic black pigments such as black iron oxide, carbon, and lower-order titanium oxide; inorganic purple pigments such as mango violet and cobalt violet; inorganic green pigments such as chromium oxide, chromium hydroxide, and cobalt titanate; inorganic blue pigments such as ultramarine and Prussian blue; and pearl pigments such as titanium dioxide-coated mica, titanium dioxide-coated bismuth oxychloride, titanium dioxide-coated talc, colored titanium dioxide-coated mica, bismuth oxychloride, and fish scale foil. Examples of organic pigments include zirconium, barium, and aluminum lake, such as Red 202, Red 205, Red 220, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, Blue 404, Red 3, Red 104, Red 227, Red 401, Orange 205, Yellow 4, Yellow 202, Green 3, and Blue 1.

[0025] (F) One or more components may be included. The amount of component (F) is preferably 0.01 to 10% by mass, and more preferably 0.03 to 5% by mass, relative to the total amount of the cosmetic.

[0026] In addition to the above-mentioned components, the present invention includes, in addition to the above-mentioned components, components commonly used in cosmetics and pharmaceuticals, such as humectants, antioxidants, preservatives, alcohols, oil-phase thickeners, aqueous-phase thickeners, powder components, fragrances, UV absorbers, pharmaceuticals, extracts, waxes, etc., and one or more of these can be blended as long as they achieve the effects of the present invention.

[0027] The cosmetic composition according to the present invention can be applied to liquid lipsticks such as lip gloss, solid lipsticks, lip serums, lip concealers, and the like. The cosmetic composition of the present invention can be manufactured according to conventional methods. [Examples]

[0028] The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the content is expressed as mass % of the total amount.

[0029] [Examples 101, 201-203, and Comparative Examples 101-106, 201-203] Cosmetics for Examples 101, 201-203 and Comparative Examples 101-106, 201-203 were prepared using the formulations shown in Tables 1 and 2. The values ​​in the tables represent mass percent. [Table 1] [Table 2] In the table, (*1): "KF-96L-1.5cs" (Shin-Etsu Chemical Co., Ltd.), kinematic viscosity (25℃) 1.5 mm 2 / s (*2): "Deodorizing Polybutene-P" (Nikko Rica Co., Ltd.), number average molecular weight approximately 1,000, viscosity 15,000~21,000 mPa·s

[0030] "Moisture retention over time" The cosmetic preparation described above was applied to the lips, and the "moisture level over time" from immediately after application to 4 hours later was evaluated according to the following criteria. A: More than four out of five members of the expert panel responded that they felt a sense of moisture. B: Two to three out of five members of the expert panel responded that they felt a sense of moisture. C: Less than one out of five expert panel members reported feeling moisturized.

[0031] "Color retention over time" The cosmetic preparations described above were applied to the lips and visually inspected after 4 hours, and evaluated according to the following criteria. A: It is uniform. B: Partial separation was confirmed. C: Separation confirmed.

[0032] "No crumbling over time" The cosmetic preparations described above were applied to the lips, and the "lack of flaking over time" from immediately after application to 4 hours later was evaluated according to the following criteria. A: More than four out of five members of the expert panel responded that there was no crumbly texture. B: Two to three out of five expert panel members responded that there was no crumbly texture. C: One or fewer out of five expert panel members responded that they did not experience any flaking or tearing.

[0033] "Non-sticky" The cosmetic preparations described above were applied to the lips, and the "non-stickiness" immediately after application was evaluated according to the following criteria. A: More than four out of five members of the expert panel responded that there was no stickiness. B: Two to three out of five expert panel members responded that it was not sticky. C: One or fewer out of five expert panel members responded that there was no stickiness.

[0034] "Stability over time" The cosmetic preparations described above were stored in a 50°C constant temperature bath for four weeks, and their condition was visually observed and evaluated according to the following criteria. A: No oil separation or water release was observed. B: A slight oily surface was observed. C: Oil separation and detachment were observed.

Claims

1. Lip cosmetic, (A) 5 to 30% by mass of nonionic surfactant relative to the total amount of cosmetic product and (B) Volatile oils in an amount of 15% by mass or more relative to the total amount of cosmetics It includes, (C) A lip cosmetic in which the amount of oil-soluble film-forming agent is 0 to 5% by mass relative to the total amount of the cosmetic, (A) A cosmetic product in which component (A) is a block-type alkylene oxide derivative represented by the following formula (I). R 1 O-[(AO) l (EO) m (AO) n -R 2 (I) (In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms. EO is an oxyethylene group, l, m, and n are the average number of moles added, where 1 ≤ m ≤ 70 and 1 ≤ l + n ≤ 70. The proportion of oxyethylene groups to the total number of oxyalkylene groups with 3 to 4 carbon atoms and oxyethylene groups is 20 to 80% by mass. R1 and R2 are each independently a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom.

2. (C) The cosmetic composition according to claim 1, wherein the oil-soluble film-forming agent is selected from the group consisting of urethane-based film-forming agents, acrylic-based film-forming agents, vinyl-based film-forming agents, and silicone-based film-forming agents.

3. (D) The cosmetic composition according to claim 1 or 2, wherein the amount of water is 0 to 20% by mass.

4. (E) The cosmetic composition according to claim 1 or 2, further comprising a non-volatile oil.

5. (F) The cosmetic composition according to claim 1 or 2, further comprising a colorant.

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