Hair styling cosmetics and hair styling methods

Abstract

The present invention provides a hair styling cosmetic that, after application to styled hair bundles, prevents the bundles from losing their shape, resulting in a natural-looking bundle, while also improving the durability of the hair bundle shape even under high humidity conditions. [Solution] A hair styling cosmetic comprising a liquid hair styling composition contained in a liquid dispensing container, wherein the hair styling composition contains the following components: (A) 2.0% to 10% by mass of a film-forming polymer, (B) a monohydric alcohol having 2 to 4 carbon atoms, a water content of 5% by mass or less, and a viscosity of 20 mPa·s or less at 25°C.

Description

Technical Field

[0001] The present invention relates to hair cosmetics and hair styling methods.

Background Art

[0002] Recently, hair styling methods using high-temperature heating appliances such as hair irons have become widespread. For example, hair styles are popular in which hair styling is performed, such as curling a thin hair bundle such as a strand of hair pulled out from gathered hair or a wisp of hair around the face with a high-temperature heating appliance such as a hair iron while maintaining a natural bundled feeling, or shaping it into another form.

[0003] In addition, hair bundles shaped using a high-temperature heating appliance such as a hair iron are likely to lose their shape when exposed to a high-humidity environment. Therefore, in order to maintain the shape of the hair bundle, a mist-shaped hair styling agent such as a hair spray or hair mist is sprayed onto the hair bundle. However, mist-shaped hair styling agents such as hair sprays and hair mists tend to collapse the shape of thin hair bundles because of the wind pressure caused by spraying during application.

[0004] On the other hand, a hair styling method is known in which a hair oil, hair lotion, or cream-shaped hair styling agent is directly applied to the hair with fingers. For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-275291) discloses a hair styling cosmetic that is aqueous-based, has a low viscosity, is excellent in hair styling power and restyling power, is not sticky, is smooth, and is excellent in the lightness of the finish. A gel-shaped or cream-shaped hair styling agent containing a film-forming polymer and a monohydric to tetrahydric alcohol is disclosed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the present inventors have found that when hair styling products such as gels and creams described in Patent Document 1 are used on hair bundles that have already been styled, the styled shape is disrupted during application, and after application, the individual hairs in the bundle tend to stick together over a wide area, forming thick bundles that look unnatural. Furthermore, conventional hair styling products described in Patent Document 1 still have room for improvement in terms of maintaining the shape of styled hair bundles even under high humidity conditions.

[0007] Therefore, the present invention provides a hair styling cosmetic that, when applied to styled hair bundles, prevents the styled hair bundles from collapsing, gives the hair bundles a natural appearance after application, and improves the persistence of the hair bundles' shape even under high humidity conditions. [Means for solving the problem]

[0008] According to the present invention, A hair styling cosmetic comprising a liquid hair styling composition contained in a liquid dispensing container, The aforementioned hair styling composition comprises the following components; (A) Film-forming polymer: 2.0% by mass or more and 10% by mass or less, (B) Monohydric alcohols with 2 to 4 carbon atoms, It contains, A hair styling cosmetic is provided, having a water content of 5% by mass or less and a viscosity of 20 mPa·s or less at 25°C.

[0009] Furthermore, according to the present invention, A hair styling method using the hair styling cosmetic described in claim 1 or 2, A hair styling method is provided, comprising the following steps 1 and 2 in order. (Step 1) The process of shaping the hair into the desired form. (Step 2) Dispense the hair styling composition from the hair styling cosmetic according to claim 1 or 2, take it on your finger, and apply it to your hair. [Effects of the Invention]

[0010] According to the present invention, it is possible to obtain a hair styling cosmetic that, even when applied to shaped hair bundles, does not easily cause the shape of the hair bundles to collapse after application, gives the hair bundles a natural appearance after application, and improves the persistence of the shape of the hair bundles even under high humidity conditions. [Modes for carrying out the invention]

[0011] The embodiments of the present invention will be described below with specific examples of each component. In this embodiment, each component may be included individually or in combination of two or more.

[0012] The definitions of the terms used in this specification are as follows: • "Hair": Primarily refers to human head hair, but also includes hair that has been detached from a human head. • "Natural hair bundle": A state where each individual hair within a bundle is separated, creating gaps, and the other side of the bundle is visible through these gaps. • "Unnatural hair bundles": Hairs within a bundle are tightly packed together over a wide area, with no gaps, making the bundle so thick and dense that you cannot see through it (it looks like a single thick line). • "Thin hair bundles": Hair bundles with a diameter of 5mm or less when bundled together as densely as possible. • "Liquid": A substance with a viscosity of 100 mPa·s or less at 25°C. • "Dispensing in liquid form": This refers to a liquid substance that is dispensed without undergoing any change in form during dispensing. Examples of substances that change form from liquid include foam, mist, and gel. • "Liquid Dispensing Container": A container configured to dispense liquid contents while maintaining their liquid state. • "Headwear products": This refers to items such as hair wigs, hairpieces, weaving, hair extensions, braided hair, hair accessories, and doll hair. • "Fibers for headwear products": This refers to fibers used in the "headwear products" mentioned above, but does not include hair.

[0013] <Hair styling cosmetics> The hair styling cosmetic of this embodiment is a hair styling cosmetic in which a liquid hair styling composition is contained in a liquid dispensing container, wherein the hair styling composition contains the following components: (A) 2.0% to 10% by mass of a film-forming polymer, and (B) a monohydric alcohol having 2 to 4 carbon atoms, with a water content of 5% by mass or less, and a viscosity of 20 mPa·s or less at 25°C.

[0014] According to the hair styling cosmetic of this embodiment, when the hair styling composition is applied to a styled hair bundle, the shape of the hair bundle is less likely to collapse after application, the hair bundle looks natural after application, and the durability of the hair bundle's shape after application is improved, even under high humidity conditions. In particular, when the hair styling composition of this embodiment is applied to hair bundles that have been styled with a hair iron, such as some strands of hair pulled out from an updo or stray hairs around the face, the styled shape of the thin hair bundle is less likely to collapse after application, the natural appearance is effectively maintained, and the shape of the thin hair bundle can be maintained even under high humidity conditions.

[0015] The mechanism by which this effect is achieved is not clear, but it is speculated to be as follows: The hair styling composition of this embodiment contains (A) 0.5% to 10% by mass of a film-forming polymer, and (B) a monohydric alcohol having 2 to 4 carbon atoms, with water content of 5% by mass or less, a viscosity of 20 mPa·s or less at 25°C, and is dispensed in liquid form. Therefore, in the hair styling cosmetics of the present embodiment, when applying the hair styling composition to a tuft of hair, a small amount of a liquid with appropriate viscosity can be taken on the finger, and even when applied to a shaped thin tuft of hair, it can be quickly and uniformly applied easily without losing its shape. Furthermore, since the stickiness generated until the solvent contained in the hair styling composition completely volatilizes occurs only for a very short time, it is possible to suppress the hair in the tuft from adhering to each other in a wide range due to the stickiness of the hair styling composition and becoming dense due to the movement of the finger during the application of the hair styling composition, and it is also possible to reduce the curling from stretching or the shape collapsing when the hair is pulled by the finger in the shaped tuft of hair. As a result, it is considered that the shape of the shaped thin tuft of hair can be maintained without being disrupted, and the appearance of the tuft of hair can be kept natural, and furthermore, the shape of the tuft of hair can be sustained even under high humidity due to the moisture resistance of the film-forming polymer.

[0016] On the other hand, since the hair styling composition described in Patent Document 1 has a relatively long solvent volatilization time, the stickiness obtained by the volatilization of the solvent persists for a long time. Therefore, while applying the hair styling composition described in Patent Document 1 to the hair of a shaped tuft of hair, strong stickiness persists for a long time, and the hair in the tuft adheres to each other in a wide range and becomes dense according to the movement of the finger, and also, when pulled by the finger or the like, the curling stretches or the shape is deformed, and then it remains fixed in the deformed state, so the shape after hair styling is likely to collapse and the appearance also tends to become an unnatural bundled state.

[0017] [Hair styling composition] The details of the hair styling composition will be described.

[0018] (Component (A)) Component (A) is a film-forming polymer and is intended to be a polymer used to form a film on the hair surface and fix the shape of a shaped tuft of hair.

[0019] The film-forming polymer is not particularly limited as long as it is a film-forming polymer commonly used in hair cosmetics. Examples include silicone-based graft polymers, urethane-based polymer compounds, polyvinylpyrrolidone-based polymer compounds, anionic vinyl ether-based polymer compounds, anionic polyvinyl acetate-based polymer compounds, anionic (meth)acrylic-based polymer compounds, amphoteric (meth)acrylic-based polymer compounds, nonionic (meth)acrylic-based polymer compounds, cationic (meth)acrylic-based polymer compounds, and maleimide-based polymer compounds. Of these, anionic (meth)acrylic-based polymer compounds, amphoteric (meth)acrylic-based polymer compounds, nonionic (meth)acrylic-based polymer compounds, cationic (meth)acrylic-based polymer compounds, and maleimide-based polymer compounds are preferred.

[0020] If component (A) is cationic, it is preferable to further neutralize the charge of the hair styling composition of this embodiment with an acid from the viewpoint of improving shape retention under high humidity and ease of washing out the hair styling composition. The acid may be an organic acid or an inorganic acid, and may be monovalent, divalent, or trivalent. Examples of inorganic acids include phosphoric acid and hydrochloric acid. Examples of monovalent organic acids include glycolic acid, lactic acid, mandelic acid, glyceric acid, pyrrolidone carboxylic acid, and gluconic acid. Examples of divalent organic acids include tartaric acid and malic acid. Examples of trivalent organic acids include citric acid, of which lactic acid and malic acid are preferred, and lactic acid is more preferred.

[0021] If component (A) is anionic, it is preferable to further neutralize the charge using a base from the viewpoint of improving shape retention under high humidity and ease of washing of the hair styling composition. The base may be an organic base or an inorganic base, and may be monovalent, divalent, or trivalent. Examples of inorganic bases include sodium hydroxide and potassium hydroxide. Examples of organic bases include ammonia, AMP (2-amino-2-methyl-1-propanol), AMPD (2-amino-2-methyl-1,3-propanediol), monoethanolamine, and triethanolamine. Of these, AMP and AMPD (2-amino-2-methyl-1,3-propanediol) are preferred, and AMP is more preferred.

[0022] In particular, from the perspective of preventing the shape of the hair bundles from collapsing during application, and from the perspective of creating natural-looking hair bundles while improving the persistence of the styled hair bundles even under high humidity, ingredient (A) is (acrylates / alkyl(C1-18) acrylate / alkyl(C1-8) acrylamide) copolymer, (acrylamide / DMAPA acrylate / methoxyPEG methacrylate) copolymer, (acrylates / diacetone acrylamide) copolymer, (vinyl methyl ether / ethyl maleate) copolymer, (octylacrylamide / acrylates / methacrylate It is preferable that the copolymer is one or more selected from (ethylaminoethyl) copolymer and (ethyl betaine methacrylate / acrylates) copolymer, and more preferably one or more selected from (acrylamide / DMAPA acrylate / methoxyPEG methacrylate) copolymer, (acrylates / alkyl(C1-18) acrylate / alkyl(C1-8) acrylamide) copolymer, (acrylates / diacetone acrylamide) copolymer, and (vinyl methyl ether / ethyl maleate) copolymer. Among these, (acrylamide / DMAPA acrylate / methoxyPEG methacrylate) copolymer and (acrylates / alkyl(C1-18) acrylate / alkyl(C1-8) acrylamide) copolymer are even more preferred from the viewpoint of improving the persistence of the hair bundle shape even under high humidity, and (acrylamide / DMAPA acrylate / methoxyPEG methacrylate) copolymer is even more preferred. Furthermore, from the viewpoint of natural-looking hair bundles, (acrylates / diacetone acrylamide) copolymer is even more preferred.

[0023] From the viewpoint of improving shape retention under high humidity, the content of component (A) is 2.0% by mass or more, preferably 2.5% by mass or more, more preferably 3.0% by mass or more, even more preferably 4% by mass or more, and even more preferably 5% by mass or more, based on the total amount of the hair styling composition. The content of component (A) is 10% by mass or less, preferably 9.5% by mass or less, more preferably 9.0% by mass or less, even more preferably 8% by mass or less, and even more preferably 7% by mass or less, based on the total amount of the hair styling composition, from the viewpoint of preventing the shape of the hair bundles shaped during application from collapsing and improving the balance between the naturalness of the hair bundles after application and the shape retention under high humidity.

[0024] (Component (B)) Component (B) is a monohydric alcohol having 2 to 4 carbon atoms, and serves as a solvent for the hair styling composition. Component (B) is specifically one or more of the following: methyl alcohol (methanol), ethyl alcohol (ethanol), n-propyl alcohol (1-propyl alcohol), and n-butanol (1-butanol). Among these, ethyl alcohol (ethanol) is preferred because it evaporates quickly and provides a good balance between natural hair bundles and shape retention.

[0025] The content of component (B) is preferably 90% by mass or more, more preferably 92% by mass or more, and even more preferably 93% by mass or more, based on the total amount of the hair styling composition, from the viewpoint of preventing the shape of the hair bundles formed during application from collapsing and from making it easier to obtain natural-looking hair bundles after application. From the viewpoint of improving the persistence of the hair bundle shape, the content of component (B) is preferably 99% by mass or less, more preferably 97% by mass or less, and even more preferably 95% by mass or less, based on the total amount of the hair styling composition.

[0026] In the hair styling composition, the mass ratio of component (B) to component (A) ((B) / (A)) is preferably 5 or more, more preferably 10 or more, even more preferably 12 or more, and even more preferably 14 or more, from the viewpoint of making it easier to obtain natural-looking hair bundles after application. In the hair styling composition, the mass ratio of component (B) to component (A) ((B) / (A)) is preferably 50 or less, more preferably 40 or less, even more preferably 35 or less, even more preferably 25 or less, even more preferably 20 or less, and even more preferably 18 or less, from the viewpoint of improving the persistence of the hair bundle shape.

[0027] The hair styling composition may consist of components (A) and (B), or may further contain other components.

[0028] ((C)Water) The hair styling composition may further contain (C) water. The content of component (C) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more, relative to the total amount of the hair styling composition, from the viewpoint of preventing the shape of the hair bundles from collapsing when applied and from the viewpoint of obtaining a good balance between natural hair bundles and the persistence of the shape. From the viewpoint of increasing volatility, preventing the shaped hair bundles from collapsing, and improving the natural appearance of the hair bundles after application, the content of component (C) is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.75% by mass or less, relative to the total amount of the hair styling composition.

[0029] The mass ratio of component (A) to component (C) ((A) / (C)) is preferably 0.5 or higher, more preferably 1 or higher, even more preferably 2 or higher, even more preferably 5 or higher, and even more preferably 8 or higher, from the viewpoint of preventing the shape of the hair bundles formed during application from collapsing and making it easier to obtain natural-looking hair bundles. Furthermore, the above mass ratio ((A) / (C)) is preferably 30 or less, more preferably 25 or less, even more preferably 20 or less, and even more preferably 15 or less, from the viewpoint of preventing the shape of the hair bundles formed during application from collapsing and improving the persistence of the shape of the hair bundles.

[0030] The mass ratio of component (B) to component (C) ((B) / (C)) is preferably 15 or more, more preferably 25 or more, even more preferably 50 or more, even more preferably 100 or more, even more preferably 150 or more, and even more preferably 170 or more, from the viewpoint of preventing the shape of the hair bundles formed during application from collapsing and making it easier to obtain natural-looking hair bundles. Furthermore, the above mass ratio ((B) / (C)) is preferably 300 or less, more preferably 250 or less, even more preferably 200 or less, even more preferably 195 or less, and even more preferably 192 or less, from the viewpoint of preventing the shape of the hair bundles formed during application from collapsing and improving the persistence of the shape of the hair bundles.

[0031] (others) In addition to the above ingredients, other ingredients commonly used in hair styling compositions may be added as needed. Such ingredients include, for example, fragrances and pigments to enhance the product's value, and preservatives and antioxidants to prevent deterioration of the hair styling composition over time. Furthermore, if necessary, humidity control agents, curing agents, antistatic agents, defoaming agents, dispersants, thickeners, UV absorbers, colored dyes, dye fixatives, propellants, etc., may also be added.

[0032] On the other hand, the hair styling composition of this embodiment is preferably substantially free of silicone compounds and non-silicone oils, from the viewpoint of creating natural-looking hair bundles while improving the persistence of the styled hair bundle shape even under high humidity conditions. In this specification, "substantially not containing" in a hair cosmetic composition means that the content is 1% by mass or less, more preferably 0.1% by mass or less, and more preferably 0.01% by mass or less.

[0033] Examples of the above-mentioned silicone compounds include modified silicones such as dimethicone, dimethiconol, amino-modified silicones, polyether-modified silicones, phenyl-modified silicones, oxazoline-modified silicones, and acrylic-modified silicones. Examples of non-silicone oils include hydrocarbon oils such as hydrogenated polyisobutene and isododecane, and ester oils such as glyceryl stearate, glyceryl oleate, glyceryl caprylate, PG stearate, sorbitan stearate, sorbitan oleate, sorbitan sesquioleate, sorbitan sesquiisostearate, sorbitan coconut fatty acid, sorbitan palmitate, sorbitan tristearate, sorbitan trioleate, polysorbate 21, polysorbate 40, polysorbate 60, polysorbate 65, polysorbate 80, and polysorbate. 85 PEG-20 sorbitan cocoate, PEG-6 sorbitan stearate, PEG-6 sorbitan oleate, PEG-160 sorbitan triisostearate, isopropyl myristate, isopropyl palmitate, cetyl ethylhexanoate, triethylhexanoin, octyldodecyl myristate, ethylhexyl stearate, butyl stearate, myristyl myristate, stearyl stearate, cholesteryl isostearate, caprylic / capric triglyceride, tricaprylin, isononyl isononanoate, iso Isotridecyl nonanoate, ethylhexyl palmitate, cetyl ethylhexanoate, neopentyl glycol diethylhexanoate, neopentyl glycol dicaprate, triethylhexanoin, caprylic / capric triglyceride, triisostearin, trimethylolpropane triisostearate, pentaerythrityl tetraethylhexanoate, pentaerythrityl tetraisostearate, polyglyceryl-2 tetraisostearate, dicaprylic / capric propanediol, polyglyceryl-6 octacaprylate, octacaprylate Chilldodecyl, Diisostearyl Malate, Polyglyceryl-2 Isostearate, Polyglyceryl-2 Diisostearate, Polyglyceryl-2 Triisostearate, Dipentaerythrityl Tripolyhydroxystearate, Dipentaerythrityl Pentaisostearate, Ethylhexyl Hydroxystearate, Polyhydroxystearic Acid, Cholesteryl Hydroxystearate, Hexa(Hydroxystearate / Stearate / Rosinate)Dipentaerythrityl, Tetra(Hydroxystearate / Isostearate)DipentaerythritylExamples include dipentaerythrityl hexahydroxystearate, glyceryl (ethylhexanoate / stearate / adipate), glyceryl tri(caprylate / caprate / myristicate / stearate), polyglyceryl-10 stearate, polyglyceryl-10 distearate, polyglyceryl-10 oleate, polyglyceryl-2 oleate, polyglyceryl-10 dioleate, polyglyceryl-2 sesquicaprylate, PEG-20 glyceryl isostearate, and PEG-20 glyceryl triisostearate.

[0034] (viscosity) The hair styling composition of this embodiment has a viscosity of 20 mPa·s or less at 25°C, preferably 15 mPa·s or less, and more preferably 10 mPa·s or less. This makes it easy to dispense a predetermined amount of the hair styling composition from a liquid dispensing container, makes it easy to apply the hair styling composition uniformly to the entire thin strand of hair, suppresses adhesion and density over a wide area due to the viscosity of the hair styling composition, and makes it less likely for the shape of the hair strand to collapse when the hair is pulled with fingers. As a result, the shape of the hair strand is less likely to collapse when applied, and the hair strand remains natural even after application, while improving the durability of the styled hair strand shape even under high humidity conditions. On the other hand, the lower limit of viscosity at 25°C mentioned above is not particularly limited, but may be set to 0.5 mPa·s or higher.

[0035] Viscosity is measured at 25°C using a B-type viscometer. The rotor and rotation speed used during measurement should be selected according to the viscosity, following the instructions in the measuring instrument's manual. Viscosity can be adjusted by the content of component (A), other optional components, etc. For example, a TVB10M viscometer (manufactured by Toki Sangyo Co., Ltd.) can be used as a type B viscometer and measured under the following conditions. (1) When viscosity is less than 20 mPa·s Rotor: L / Adp, 30rpm, 60sec (2) When the viscosity is 20 mPa·s or more and less than 50 mPa·s Rotor: L / Adp, 12rpm, 60sec (3) When the viscosity is 50 mPa·s or more and less than 100 mPa·s Rotor: L / Adp, 6rpm, 60sec (4) Viscosity of 100 mPa·s or higher Rotor: M-1, 6rpm, 60sec

[0036] (Vapor pressure) The vapor pressure of the hair styling composition of this embodiment at 25°C is preferably 7.9 kPa or less, from the viewpoint of preventing the styled hair bundles from losing their shape and from the viewpoint of improving the balance between the naturalness of the hair bundles after application and the shape retention under high humidity. On the other hand, the vapor pressure of the hair styling composition at 25°C is preferably 7.0 kPa or higher, preferably 7.2 kPa or higher, and more preferably 7.5 kPa or higher, from the viewpoint of obtaining good volatility and shortening the stickiness of the hair styling composition so that the shape of the hair bundles formed during application is less likely to collapse. As a result, the hair styling composition can be easily applied to thin hair bundles, and more natural-looking hair bundles can be obtained.

[0037] The vapor pressure can be calculated by applying the following formula. Vapor pressure (kPa) = Vapor pressure of component (B) (kPa) × Mole fraction of component (B) + Vapor pressure of water (3.7kPa) × Mole fraction of water

[0038] [Liquid dispensing container] The liquid-dispensing container is configured to contain the above-mentioned liquid hair styling composition and to dispense the hair styling composition in liquid form. In other words, it dispenses the hair styling composition without changing its form to foam, mist, etc. Furthermore, the liquid-dispensing container in this invention is a type of non-aerosol container and is not a so-called aerosol container that releases the hair styling composition to the outside of the container in the form of mist, foam, etc., by the pressure of vaporized liquefied gas or compressed gas. In this embodiment, by using a liquid-dispensing container, it becomes easy to take an appropriate amount of the liquid hair styling composition onto the fingers, and the appropriate amount can be applied uniformly to the entire hair bundle, thereby realizing the effects of the present invention.

[0039] The liquid dispensing container is configured to dispense a quantitative amount of hair styling composition. From the viewpoint of making it easy to take an appropriate amount of liquid hair styling composition onto one's fingers, and from the viewpoint of making it easy to apply an appropriate amount of hair styling composition to thin strands of hair, the dispensing amount is preferably 0.01g or more and 0.05g or less per dispensed, and more preferably 0.015g or more and 0.04g or less.

[0040] Liquid dispensing containers can take the form of a pump or a tube, but a tube is preferred because it fits comfortably in the hand, is highly portable, and allows for easy dispensing of an appropriate amount of hair styling composition onto the fingers.

[0041] <Hair styling methods> Next, I will explain one example of a hair styling method. The hair styling method of this embodiment is a hair styling cosmetic in which a liquid hair styling composition is contained in a liquid dispensing container, wherein the hair styling composition contains the following components: (A) 2.0% to 10% by mass of a film-forming polymer, (B) a monohydric alcohol having 2 to 4 carbon atoms, has a water content of 5% by mass or less, and has a viscosity of 20 mPa·s or less at 25°C, and comprises the following steps 1 and 2 in order. (Step 1) The process of shaping the hair into the desired form. (Step 2) Dispense the hair styling composition from the hair styling cosmetic, take it on your finger, and apply it to your hair.

[0042] This allows the styled hair to maintain its shape well, resulting in a natural-looking hair bundle, while also improving the durability of the styled hair bundle's shape even under high humidity conditions. The following explains the details of each step.

[0043] (Process 1) First, the hair is shaped into the desired form. Known methods can be used to style the hair, such as using combs, brushes, curlers, hair ties, and hairpins, and / or high-temperature heating devices such as hair dryers and hair irons to set curls or other shapes in the hair. In order to firmly set the shape in the hair, it is preferable to use a high-temperature heating device such as a hair iron to set the desired shape, it is more preferable to heat the hair to 120°C to 240°C to set the desired shape, and it is even more preferable to heat the hair to 140°C to 180°C to set the desired shape. Hair shaping may be applied to the entire head of hair or to a portion of it. For example, the entire head of hair may be styled, and then a thin section of hair may be pulled out and shaped. Before performing step 1, it is optional to apply a known hair styling composition or hair cosmetic composition to the washed hair.

[0044] (Process 2) Next, the hair styling composition is dispensed from the hair styling cosmetic and taken onto the fingers, then applied to the hair. Preferably, the amount of hair styling composition dispensed per application is 0.01g to 0.05g, more preferably 0.015g to 0.04g. This allows for the application of an appropriate amount of the hair styling composition to fine strands of hair, such as strands pulled out from a bun or loose hairs around the face. This prevents the hair bundles from falling apart after application, resulting in a good balance between natural-looking hair bundles and lasting shape. Furthermore, applying with fingers makes it easier to apply the appropriate amount accurately and without disturbing the shape of delicate, fine hair bundles, compared to using tools such as combs.

[0045] The method of application to the hair should be the same as usual, so as not to disrupt the hair's shape. For example, to lightly cover the surface of the styled hair, take some hair styling composition on your fingers, lightly pinch a strand of hair between your index finger and thumb, and spread it by sliding your fingers towards the ends of the hair while holding the strand in place. Alternatively, you can lightly pinch multiple points on a strand of hair between your index finger and thumb to apply the hair styling composition to the strand. Furthermore, when applying hair styling compositions, it is best to avoid pulling the hair strands too hard. Furthermore, the hair styling composition may be applied to the entire hair bundle or to only a portion of the hair bundle.

[0046] Furthermore, the hair styling composition of this embodiment is highly volatile and therefore dries quickly. Thus, after step 2, natural drying is sufficient. Additionally, because natural drying is possible without using a hairdryer, the shape of the thin hair strands to which the styling composition has been applied is less likely to be further disrupted by the air pressure of a hairdryer.

[0047] Furthermore, while the hair styling cosmetic of this embodiment is preferably applied to hair, it may also be used, for example, on fibers for headwear products.

[0048] For headwear products, either natural or synthetic fibers may be used, but natural fibers are preferred. Natural fibers refer to fibers extracted from natural animals and plants (excluding human hair), or fibers artificially manufactured using proteins, polysaccharides, etc. as raw materials. Of these, animal hair, or fibers artificially manufactured using proteins or polysaccharides such as keratin, collagen, casein, as well as proteins derived from soybeans, peanuts, corn, silk, etc., are preferred. Regenerated protein fibers made from keratin, collagen, casein, soy protein, peanut protein, corn protein, silk protein (e.g., silk fibroin) are more preferred. Regenerated protein fibers such as regenerated collagen fibers made from collagen, and regenerated silk fibers made from silk fibroin are even more preferred, and regenerated collagen fibers are even more preferred. Regenerated collagen fibers can be manufactured using known technologies. The composition of regenerated collagen fibers may be less than 100% collagen, and may include natural polymers, synthetic polymers, additives, etc., for quality improvement. Furthermore, regenerated collagen fibers may be post-processed or post-treated. The form of regenerated collagen fibers is preferably filament. Filaments are generally taken from bobbins or boxes. Alternatively, filaments that come out of the drying process during the manufacturing process of regenerated collagen fibers can be used directly.

[0049] Examples of synthetic fibers include fibers that mainly consist of synthetic resin. From the viewpoint of ease of manufacturing synthetic fibers and obtaining a texture similar to that of hair, the synthetic resin is preferably a thermoplastic resin, and more preferably one or more selected from the group consisting of polyester resin, polyamide resin, polyimide resin, polyamide-imide resin, vinyl chloride resin, polycarbonate resin, polyphenylene sulfide resin, and modacrylic resin (a copolymer of acrylonitrile and vinyl chloride). In this context, "main component" refers to a component in which the synthetic resin content in the synthetic fiber is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, and even more preferably 90% by mass or more, and is 100% by mass or less. In addition to the synthetic resin mentioned above, synthetic fibers may also contain various other components such as flame retardants, flame retardant additives, light or heat stabilizers, fluorescent agents, antioxidants, antistatic agents, and ultraviolet absorbers.

[0050] The embodiments of the present invention have been described above, but these are merely examples, and various other configurations can also be adopted. [Examples]

[0051] Next, the present invention will be described in detail with reference to examples, but the content of the present invention is not limited to these examples.

[0052] <Examples and Comparative Examples> Hair styling compositions with the compositions shown in Table 1 were prepared by conventional methods, filled into HAT tubes (Yoshino Kogyo Co., Ltd., U-7405), and sealed using caps (Yoshino Kogyo Co., Ltd., W-3773), inner stoppers (Yoshino Kogyo Co., Ltd., M-8916, hole diameter 1φ), and inner stopper valves (Yoshino Kogyo Co., Ltd., A-9216) to obtain the hair styling cosmetics for the examples and comparative examples. Table 1 shows the viscosity at 25°C and the vapor pressure at 25°C for each hair styling composition. Viscosity was measured using a TVB10M viscometer (manufactured by Toki Sangyo Co., Ltd.) under the following conditions. (1) When viscosity is less than 20 mPa·s Rotor: L / Adp, 30rpm, 60sec (2) When the viscosity is 20 mPa·s or more and less than 50 mPa·s Rotor: L / Adp, 12rpm, 60sec (3) When the viscosity is 50 mPa·s or more and less than 100 mPa·s Rotor: L / Adp, 6rpm, 60sec (4) When the viscosity is 100 mPa·s or more but less than 200 mPa·s Rotor: M-1, 30 rpm, 60 sec (5) When the viscosity is 200 mPa·s or higher Rotor: M-1, 6rpm, 60sec

[0053] Next, the following were measured and evaluated according to the methods and criteria described below: "naturalness of the hair bundles (whether they were tightly packed or airy)", "shape retention rate of the hair bundles (%)", and "shape retention rate of the hair bundles under high humidity (%)". The results are shown in Table 1.

[0054] <Measurement and Evaluation> (1) Preparation of hair bundles for evaluation Using untreated, straight Japanese hair, a hair bundle weighing 0.3g, 23cm in length, and with a diameter of 1mm when the hair was tightly bundled into a circular shape was created. This hair bundle was wet with 40°C tap water for 30 seconds, then washed with the following plain shampoo, and rinsed with 40°C tap water for 30 seconds. Next, the following plain conditioner was applied, rinsed with 40°C tap water for 30 seconds, towel-dried, and then dried with warm air for 5 minutes using a hair dryer (Tescom Electric Co., Ltd., NB1903) while combing. Finally, it was conditioned in a laboratory atmosphere (25°C, 65%RH) for 60 minutes.

[0055] (Plain Shampoo) (Percentage by Mass) Emal 227 (manufactured by Kao Corporation) (*A) 47.2 Aminone C-11S (manufactured by Kao Corporation) (*i) 2.50 Sodium benzoate 1.10 Sodium chloride 1.20 Ion-exchanged water 86.6 (Total) 100 *A: Sodium laureth sulfate (27% by mass of effective content) *I: Cocamide methyl MEA

[0056] (Plain Rinse) (Mass %) Cortamin E-80K (manufactured by Kao Corporation) (*U) 2.22 Calcol 6870 (manufactured by Kao Corporation) (*E) 1.78 Propylene glycol 1.00 Phenoxyethanol 0.30 Ion-exchanged water 94.7 (Total) 100 *U: Stearoxypropyltrimonium chloride (45% by mass of active ingredient) *E: Cetanol

[0057] (2) Styling of hair bundles for evaluation After wrapping the evaluation hair strands around a curling iron (Tresutopia, model number F3467, iron diameter φ25mm) heated to 180°C (measured value at the heating element of the iron), they were held in place for 20 seconds to impart a curl shape to the hair strands.

[0058] (3) Measurement of the "percentage of hair bundle shape retention immediately after application of the hair styling product composition" When the evaluation hair bundles, to which the curl shape was added as described in (2) above, were suspended by fixing the roots, the length from the roots to the tips of the evaluation hair bundles was measured and defined as L0 (cm). Next, one drop (0.02 g) of the hair styling cosmetic from the examples and comparative examples was placed on the pad of the index finger, and while holding the base of the hair bundle for evaluation between the index finger and thumb, the product was applied by sliding the finger towards the ends of the hair at a speed of 5 cm / second. This procedure was repeated three times, applying a total of 0.06 g to the hair bundle for evaluation, after which the hair bundle was suspended and dried for 30 minutes under laboratory conditions (25°C, 65% RH). The length of the hair bundle used for evaluation was measured from the root to the tip, and this length was defined as L1 (cm). Using the evaluation hair bundle length of 23 cm, the "shape retention rate of the hair bundle immediately after styling" was calculated by applying it to the following formula (1), and the average of N=3 trials is shown in Table 1. Hair bundle shape retention rate (%) = (23-L1) / (23-L0) × 100 ... Equation (1)

[0059] (4) Evaluation of the "naturalness of hair strands immediately after application of hair styling product composition" The hair bundles for which the above "(3) Hair bundle shape retention rate (%)" measurement was performed were evaluated by a panel of five experts who agreed to follow the procedure and criteria below. The condition of the hair in the middle section of the hair bundles for which the above "(3) Hair bundle shape retention rate (%)" measurement was performed was visually observed from a distance of 50 cm from the hair bundle and evaluated according to the following criteria. The average evaluation of the five people is recorded in Table 1. ·standard 4: The hairs in the evaluation bundle appear to be individual strands rather than forming thin bundles, and the back of the hair is visible through the gaps between each hair throughout the entire middle section of the bundle. 3: The hairs in the evaluation strand appear to be divided into four or more thinner strands, and the back is visible through the gaps between each thinner strand throughout the entire middle section of the strand. 2: The hair in the evaluation strand appears to be divided into 2-3 thin strands, and in a portion of the middle section of the strand, the back is visible through the gaps between each thin strand. 1: All the hairs in the evaluation bundle are tightly packed together from root to tip, forming a single strand, and the back of the hair bundle is not visible from almost the entire middle section (it appears as a single thick line).

[0060] (5) Measurement of "Shape retention rate of hair bundles under high humidity conditions (%)" The evaluation hair bundles, for which the above "(3) Hair bundle shape retention rate (%)" measurement was performed, were suspended in an environment of 25°C and 90% RH, with the roots fixed, and left to stand for 30 minutes. The length from the root to the tip of the evaluation hair bundle was measured immediately afterward and defined as L2 (cm). Using a 23cm evaluation hair bundle, the hair bundle shape retention rate (%) under high humidity conditions was calculated using the following formula (2), and the average of N=3 trials is shown in Table 1. Hair bundle shape retention rate (%) under high humidity = (23-L2) / (23-L1) × 100 ... Equation (2)

[0061] [Table 1]

[0062] *1 N-tert-butylacrylamide / ethyl acrylate / N,N-dimethylaminopropylacrylamide / polyethylene glycol methacrylate copolymer <55 / 20 / 15 / 10> (mass ratio) with a weight-average molecular weight of approximately 250,000 and a glass transition temperature (Tg) of 61°C. *2 Plus size L-9909B manufactured by Go-o Chemical Industry Co., Ltd. *3 Plus size L-9540B manufactured by Go-o Chemical Industry Co., Ltd. *4 Ashland Japan Co., Ltd. Gantlets ES-225 *5 Nurion Japan Co., Ltd. Unformer 28-4910 *6 Osaka Organic Chemical Industry Co., Ltd. Yukaformer SM *7 Osaka Organic Chemical Industry Co., Ltd. Yukaformer 301

[0063] (6) Examples of prescriptions The hair styling compositions shown below were prepared by conventional methods, filled into HAT tubes (Yoshino Kogyo Co., Ltd., U-7405), and sealed using caps (Yoshino Kogyo Co., Ltd., W-3773), inner stoppers (Yoshino Kogyo Co., Ltd., M-8916, hole diameter 1φ), and inner stopper valves (Yoshino Kogyo Co., Ltd., A-9216) to obtain the hair styling cosmetics for the examples and comparative examples.

[0064] <Prescription Example 1> (Acrylamide / DMAPA Acrylate / MethoxyPEG Methacrylate) Copolymer*1 5.0% by mass (Acrylates / Alkyl(C1-18) Acrylate / Alkyl(C1-8) Acrylamide) Copolymer AMP*2 1.0% by mass Lactic acid 0.3% by mass Ethanol 93.2% by mass Water 0.5% by mass (Total) 100% by mass

[0065] <Prescription Example 2> (Acrylates / Alkyl(C1-18) Acrylate / Alkyl(C1-8) Acrylamide) Copolymer AMP*2 3.0% by mass (Acrylates / Diacetone Acrylamide) Copolymer AMP*3 3.0% by mass Ethanol 93.5% by mass Water 0.5% by mass (Total) 100% by mass

[0066] <Prescription Example 3> (Acrylates / Diacetone Acrylamide) Copolymer AMP*3 3.0% by mass (Ethyl betaine methacrylate / acrylates) copolymer*6 3.0% by mass Ethanol 93.5% by mass Water 0.5% by mass (Total) 100% by mass

[0067] <Prescription Example 4> (Acrylates / Alkyl(C1-18) Acrylate / Alkyl(C1-8) Acrylamide) Copolymer AMP*2 3.0% by mass (Acrylates / Diacetone Acrylamide) Copolymer AMP*3 3.0% by mass (Ethyl betaine methacrylate / acrylates) copolymer*6 3.0% by mass Ethanol 90.5% by mass Water 0.5% by mass (Total) 100% by mass

Claims

1. A hair styling cosmetic comprising a liquid hair styling composition contained in a liquid dispensing container, The aforementioned hair styling composition comprises the following components: (A) Film-forming polymer: 2.0% by mass or more and 10% by mass or less (B) Monohydric alcohols with 2 to 4 carbon atoms, It contains, A hair styling cosmetic having a water content of 5% by mass or less and a viscosity of 20 mPa·s or less at 25°C.

2. The hair styling cosmetic according to claim 1, wherein component (A) is one or more selected from anionic (meth)acrylic polymer compounds, amphoteric (meth)acrylic polymer compounds, nonionic (meth)acrylic polymer compounds, cationic (meth)acrylic polymer compounds, and maleimide polymer compounds.

3. The hair styling cosmetic according to claim 1 or 2, wherein the vapor pressure of the hair styling composition at 25°C is 7.9 kPa or less.

4. The hair styling cosmetic according to claim 1 or 2, wherein component (A) is one or more selected from (acrylates / alkyl (C1-18) acrylate / alkyl (C1-8) acrylamide) copolymer, (acrylamide / DMAPA acrylate / methoxyPEG methacrylate) copolymer, (acrylates / diacetone acrylamide) copolymer, (vinyl methyl ether / ethyl maleate) copolymer, (octylacrylamide / acrylates / butylaminoethyl methacrylate) copolymer, and (ethyl betaine methacrylate / acrylates) copolymer.

5. The hair styling cosmetic according to claim 1 or 2, wherein the content of component (B) is 90% by mass or more.

6. The hair styling cosmetic according to claim 1 or 2, wherein the liquid dispensing container is in the form of a tube.

7. The hair styling cosmetic according to claim 1 or 2, wherein the liquid dispensing container is configured to dispense a quantitative amount of the hair styling composition.

8. The hair styling cosmetic according to claim 1 or 2, wherein the liquid dispensing container is configured to dispense 0.01 g or more and 0.05 g or less of the hair styling composition per dispensing.

9. A hair styling method using the hair styling cosmetic described in claim 1 or 2, A hair styling method comprising the following steps 1 and 2 in order. (Step 1) A process of shaping the hair into the desired form. (Step 2) The step of dispensing the hair styling composition from the hair styling cosmetic according to claim 1 or 2, taking it on a finger, and applying it to the hair.

10. The hair styling method according to claim 9, wherein in step 2, the amount of hair styling composition dispensed is 0.01 g or more and 0.05 g or less per discharge.

11. The hair styling method according to claim 9, wherein in step 1, the hair is heated to a temperature of 120°C or higher and 240°C or lower to form a desired shape.

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