Non-aqueous hair composition and hair treatment method

Abstract

To provide a non-aqueous hair composition that provides good manageability when drying hair and a moist feeling after drying, and a hair treatment method using the composition. [Solution] The non-aqueous hair composition contains (A) a kinematic viscosity at 37.8°C of 1.38 mm² or more by mass of 15% or more. 2 / s or more 13.0mm 2 The composition contains (B) hydrocarbons with an organic value of less than 500, (C) volatile acyclic silicones and / or isododecane, (D) highly polymerized methylpolysiloxanes and / or highly polymerized dimethiconol, and (A) compounds having ester bonds with an organic value of less than 500. The hair treatment method involves using the above non-aqueous hair composition.

Description

[Technical Field]

[0001] The present invention relates to a non-aqueous hair composition and a hair treatment method using the composition. [Background technology]

[0002] Treatment with a non-aqueous hair composition suitable as a leave-in treatment can impart a different feel to the hair compared to aqueous treatments. Volatile cyclic silicones are known as a common ingredient incorporated into non-aqueous hair compositions, but their supply is sometimes a concern due to the increasing global demand for cosmetics. Under these circumstances, there is a need to reduce the amount of volatile cyclic silicones used. As one solution to this, Patent Document 1 proposes a leave-in non-aqueous hair oil containing predetermined amounts of dimethicone, dimethiconol, and isododecane, and substantially free of cyclic silicones. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2018-100244 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] Volatile hydrocarbons are considered potential alternatives to volatile cyclic silicones, and isododecane, a type of volatile hydrocarbon, is a suitable and inexpensive candidate. However, it has become clear that when isododecane is included, it can sometimes make hair that has been treated with a non-aqueous hair composition difficult to comb through when drying.

[0005] Furthermore, there are cases where a moist feeling when touching the hair is desired, and in addition to improving the ease of combing during hair drying as described above, a non-aqueous hair composition that provides excellent moist feeling after drying is desirable.

[0006] In view of the above circumstances, the present invention aims to provide a non-aqueous hair composition that provides good manageability when drying hair and a moist feeling after drying, and a hair treatment method using the composition. [Means for solving the problem]

[0007] As a result of the inventors' diligent research on non-aqueous hair compositions, (A) the kinematic viscosity at 37.8°C is 1.38 mm 2 / s or more 13.0mm 2 It was found that a non-aqueous hair composition containing (B) a hydrocarbon with a value of 15% or less, (C) a volatile acyclic silicone and / or isododecane, and (A) a highly polymerized methylpolysiloxane and / or highly polymerized dimethiconol, with an amount of component (A) of 15% by mass or more, results in smoother hair texture when the hair is dried after application of the composition. Furthermore, it was found that a non-aqueous hair composition further containing (D) a compound having an ester bond with an organic value of less than 500 maintains the same or better level of smoothness while improving the moisturizing effect on the hair after drying.

[0008] The present invention includes the following [1] to

[13] . [1] A non-aqueous hair composition comprising the following components (A), (B), (C), and (D), wherein the amount of component (A) is 15% by mass or more. (A) Kinematic viscosity at 37.8℃ is 1.38 mm 2 / s or more 13.0mm 2 hydrocarbons less than / s (B) Volatile acyclic silicones and / or isododecanes (C) Highly polymerized methylpolysiloxane and / or highly polymerized dimethiconol (D) Compounds having ester bonds with an organic value of less than 500

[0009] [2] The non-aqueous hair composition according to [1], wherein a compound having an ester bond with an organic value of 100 or more and 490 or less and an inorganic value of 40 or more and 350 or less is blended as the component (D). If it is the composition of the present invention [2], it is excellent in the moist feeling of hair.

[0010] [3] The non-aqueous hair composition according to [1] or [2], wherein an ester oil is blended as the component (D).

[0011] [4] The non-aqueous hair composition according to any one of [1] to [3], wherein the blending amount of the volatile cyclic silicone is less than 5% by mass or not blended. If it is the composition of the present invention [4], the blending amount of the volatile cyclic silicone with supply instability can be suppressed.

[0012] [5] The non-aqueous hair composition according to any one of [1] to [4], wherein a hydrocarbon having a kinematic viscosity at 37.8 °C of 10.0 mm 2 / s or less is blended as the component (A). If it is the composition of the present invention [5], the hair will feel better when passing through the fingers during the process of applying and drying this composition.

[0013] [6] The non-aqueous hair composition according to any one of [1] to [5], wherein light fluid isoparaffin is blended as the component (A).

[0014] [7] The non-aqueous hair composition according to [6], wherein the blending amount of the light fluid isoparaffin exceeds 10% by mass. According to the non-aqueous hair composition of the present invention [7], the hair will feel better when passing through the fingers during the process of applying and drying this composition.

[0015] [8] The non-aqueous hair composition according to any one of [1] to [7], wherein 10% by mass or more of a volatile acyclic silicone is blended as the component (B). According to the non-aqueous hair composition of the present invention [8], the hair will feel better when passing through the fingers during the process of applying and drying this composition.

[0016] [9] The non-aqueous hair composition according to any one of [1] to [8], in which isododecane less than 35% by mass is blended as the component (B). According to the non-aqueous hair composition of the invention [9], the feel of the hair when passing through the fingers during the process of applying and then drying this composition becomes better.

[0017]

[10] The non-aqueous hair composition according to any one of [1] to [9], in which the blending amount of the component (C) is less than 15% by mass. According to the non-aqueous hair composition of the invention

[10] , the feel of the hair when passing through the fingers during the process of applying and then drying this composition becomes better.

[0018]

[11] The non-aqueous hair composition according to any one of [1] to

[10] , in which highly polymerized methylpolysiloxane less than 10% by mass is blended as the component (C). According to the non-aqueous hair composition of the invention

[11] , the feel of the hair when passing through the fingers during the process of applying and then drying this composition becomes better.

[0019]

[12] The non-aqueous hair composition according to any one of [1] to

[11] , in which amino-modified silicone is blended. According to the non-aqueous hair composition of the invention

[12] , the feel of the hair when passing through the fingers during the process of applying and then drying this composition becomes better.

[0020]

[13] A hair treatment method using the non-aqueous hair composition according to any one of [1] to

[12] .

Effects of the Invention

[0021] According to the non-aqueous hair composition of the present invention, the feel of the hair when passing through the fingers during the process of applying and then drying the composition, and the moist feeling of the hair after drying are good.

[0022] Also, according to the hair treatment method of the present invention, the feel of the hair when passing through the fingers during the process of applying and then drying the non-aqueous hair composition, and the moist feeling of the hair after drying are good.

Modes for Carrying Out the Invention

[0023] Based on the embodiments of the present invention, the present invention will be described below. The non-aqueous hair composition according to this embodiment contains the following components (A), (B), (C), and (D), and is a non-aqueous hair composition in which the following component (A) is in a predetermined blending amount. Further, as an optional component, components blended in known non-aqueous hair compositions may be blended in the non-aqueous hair composition according to this embodiment. (A) Hydrocarbon having a predetermined kinematic viscosity (B) Volatile acyclic silicone and / or isododecane (C) Highly polymerized methylpolysiloxane and / or highly polymerized dimethiconol (D) Compound having an ester bond with an organic value of less than 500

[0024] Although the composition of this embodiment is non-aqueous, this "non-aqueous" means that the external phase of the composition does not have an oil phase or an aqueous phase. And since separation of the aqueous phase and the oil phase and turbidity of the composition are likely to occur when water is blended, it is preferable not to blend water. When water is blended, the blending amount is preferably less than 3.0% by mass, more preferably less than 1.0% by mass, still more preferably less than 0.5% by mass, even more preferably less than 0.1% by mass, and even more preferably less than 0.05% by mass.

[0025] (Component (A) Hydrocarbon having a predetermined kinematic viscosity) The hydrocarbon blended as component (A) in the non-aqueous hair composition of this embodiment has a kinematic viscosity at 37.8 °C of 1.38 mm 2 / s or more and 13.0 mm 2 / s or less. This kinematic viscosity is preferably 1.40 mm 2 / s or more and 10.0 mm 2 / s or less, more preferably 1.40 mm 2 / s or more and 8.0 mm 2 / s or less, and even more preferably 1.40 mm 2 / s or more and 5.0 mm 2 / s or less. If component (A) has a kinematic viscosity of 1.40 mm 2 / s or more, the smoothness of the hair after drying will be good, and 10.0 mm 2If the component (A) is less than or equal to / s, the hair will feel smoother to the touch when drying, and the hair will be softer, smoother, and more moisturized after drying.

[0026] The hydrocarbon component (A) should preferably have a flash point of 50°C or higher, 55°C or higher, 60°C or higher, 70°C or higher, or 80°C or higher. Furthermore, for good manageability when drying hair, as well as the softness, smoothness, and moisture of the hair after drying, the flash point of the hydrocarbon component (A) should preferably be 110°C or lower, preferably 100°C or lower, and more preferably 95°C or lower. The flash point should be measured by a known and suitable method. For example, Japanese Industrial Standard JIS K 2265 discloses that the Tag closure method is suitable when the flash point range is 93°C or lower, and that the Cleveland open method is suitable when the flash point range exceeds 79°C.

[0027] Component (A) is preferably one or more hydrocarbons selected from known hydrocarbons. Examples of known hydrocarbons for component (A) include light isoparaffins, light liquid isoparaffins, undecane / tridecane, and (C13-15) alkanes. The amount of component (A) in the non-aqueous hair composition of this embodiment is 15% by mass or more. To improve the moist feeling of the hair after drying, 20% by mass or more is good, 25% by mass or more is preferred, 30% by mass or more is more preferred, 35% by mass or more is even more preferred, and 40% by mass or more is even more preferred. Furthermore, to improve the ease of combing the hair when drying, and the softness and smoothness of the hair after drying, the amount of component (A) is preferably 80% by mass or less, preferably 70% by mass or less, more preferably 60% by mass or less, and even more preferably 55% by mass or less.

[0028] Light liquid isoparaffin is inexpensive among the components (A) and is therefore suitable for inclusion in the non-aqueous hair composition of this embodiment. In the non-aqueous hair composition of this embodiment, the amount of light liquid isoparaffin to be included should be more than 10% by mass, preferably more than 20% by mass, more preferably more than 30% by mass, and even more preferably more than 40% by mass, in order to improve the moist feeling of the hair after drying. Furthermore, the amount of light liquid isoparaffin to be included should be 80% by mass or less, preferably 70% by mass or less, more preferably 60% by mass or less, and even more preferably 55% by mass or less, in order to improve the ease of combing the hair when drying, and the softness and smoothness of the hair after drying.

[0029] (Component (B) Volatile acyclic silicone and / or isododecane) The non-aqueous hair composition of this embodiment contains component (B), which is a volatile acyclic silicone, isododecane, or a volatile acyclic silicone and isododecane. The non-aqueous hair composition of this embodiment may contain either a volatile acyclic silicone or isododecane, but it may also contain no volatile acyclic silicone or no isododecane. By including a highly volatile component (B), the hair to which the non-aqueous hair composition of this embodiment has been applied dries more easily.

[0030] The volatile acyclic silicone component (B) does not have a cyclic skeleton in its molecular structure, unlike volatile acyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Furthermore, the kinematic viscosity of the above volatile acyclic silicone at 25°C is 3.0 mm². 2 The temperature is less than / s, and to make hair drying easier, use 2.5mm. 2 / s or less is preferable, 2.0mm 2 Preferably less than / s (the lower limit of kinematic viscosity is set to, for example, 1.0 mm) 2 It should be at least / s.

[0031] When incorporating volatile acyclic silicone as component (B), it is preferable to incorporate one or more types selected from known volatile acyclic silicones. Examples of such volatile acyclic silicones include linear dimethylpolysiloxanes such as trisiloxane, branched silicones such as methyl trimethicone, and silicones having alkyl groups as side chains such as ethyl methicone. When incorporating volatile acyclic silicone as component (B) in the non-aqueous hair composition of this embodiment, the amount of volatile acyclic silicone in the composition is preferably 10% by mass or more and 85% by mass or less, more preferably 15% by mass or more and 70% by mass or less, more preferably 20% by mass or more and 60% by mass or less, and even more preferably 30% by mass or more and 50% by mass or less. If the amount of volatile acyclic silicone is 10% by mass or more, it is suitable for improving the manageability of the hair when drying, as well as the softness and smoothness of the hair after drying. If it is 85% by mass or less, it is suitable for reducing the cost of the non-aqueous hair composition. Furthermore, if isododecane is included as component (B), the amount of the above-mentioned volatile acyclic silicone may be 10% by mass or less, 5% by mass or less, 3% by mass or less, or 1% by mass or less.

[0032] In the non-aqueous hair composition of this embodiment, when isododecane, which is component (B), is incorporated, an amount of 3% by mass or more and less than 35% by mass is preferable, 5% by mass or more and less than 25% by mass is preferable, and 10% by mass or more and less than 15% by mass is more preferable. If the amount of isododecane is 3% by mass or more, it is suitable for easy drying of hair, and if it is less than 35% by mass, it is suitable for improving the manageability of the hair when drying, as well as the softness, smoothness, and moistness of the hair after drying. If a volatile acyclic silicone is incorporated as component (B), the amount of isododecane may be less than 3% by mass, less than 1% by mass, less than 0.5% by mass, or less than 0.1% by mass.

[0033] (Component (C) Highly polymerized methylpolysiloxane and / or highly polymerized dimethiconol) The non-aqueous hair composition of this embodiment contains component (C), which is high polymer methylpolysiloxane, high polymer dimethiconol, or high polymer methylpolysiloxane and high polymer dimethiconol. The non-aqueous hair composition of this embodiment may be composed of either high polymer methylpolysiloxane or high polymer dimethiconol, but it may also be composed of no high polymer methylpolysiloxane or no high polymer dimethiconol. The inclusion of component (C) is suitable for improving the manageability of the hair when drying, as well as the softness, smoothness, and moisturizing effect of the hair after drying.

[0034] The amount of component (C) in the non-aqueous hair composition of this embodiment is preferably 1% by mass or more and less than 15% by mass, and more preferably 2% by mass or more and less than 10% by mass. When the amount of component (C) is 1% by mass or more and less than 15% by mass, it is suitable for improving the manageability of the hair when drying, as well as the softness, smoothness, and moistness of the hair after drying.

[0035] The highly polymerized methylpolysiloxane, which is component (C), is a linear polymer with an average degree of polymerization of 650 or more, with siloxane bonds as its backbone. It is preferable to incorporate one or more types selected from known highly polymerized methylpolysiloxanes as component (C). The amount of the highly polymerized methylpolysiloxane in the non-aqueous hair composition according to this embodiment is preferably 1% by mass or more and less than 15% by mass, 2% by mass or more and less than 10% by mass, or 3% by mass or more and less than 5% by mass. If the amount of component (C) is 1% by mass or more and less than 15% by mass, it is suitable for improving the manageability of the hair when drying, as well as the softness, smoothness, and moistness of the hair after drying.

[0036] The high polymerized dimethiconol, which is component (C), is a linear polymer with an average degree of polymerization of 650 or more, with a siloxane bond having a hydroxyl group at the terminal as its backbone. It is preferable to incorporate one or more types of known high polymerized dimethiconols as component (C). The amount of the high polymerized dimethiconol incorporated in the non-aqueous hair composition according to this embodiment is preferably 1% by mass or more and less than 15% by mass, 2% by mass or more and less than 10% by mass, or 3% by mass or more and less than 5% by mass. If the amount of component (C) is 1% by mass or more and less than 15% by mass, it is suitable for improving the manageability of the hair when drying, as well as the softness, smoothness, and moistness of the hair after drying.

[0037] (Component (D): Compounds having ester bonds with an organic value of less than 500) The non-aqueous hair composition of this embodiment contains a compound having an ester bond, which is component (D), and has an organic value of less than 500. The inclusion of component (D) is suitable for improving the moist feeling of hair after drying. Here, the organic value and the inorganic value described later are values ​​that can be determined from the chemical structure. The method for calculating them is publicly known at "https: / / www.nihon-emulsion.co.jp / tech / organic.html" and other sources.

[0038] In the non-aqueous hair composition of this embodiment, the amount of component (D) is preferably 0.01% by mass or more and less than 10% by mass, more preferably 0.05% by mass or more and less than 7.5% by mass, and more preferably 0.1% by mass or more and less than 5.0% by mass. If the amount of component (C) is 0.01% by mass or more, it is suitable for improving the moist feeling of the hair after drying, and if it is less than 10% by mass, it is suitable from the viewpoint of smoothness.

[0039] From the viewpoint of the moist feeling of hair after drying, component (D) is preferably one with an organic value of 100 to 490 and an inorganic value of 40 to 350, more preferably one with an organic value of 200 to 460 and an inorganic value of 40 to 250, and even more preferably one with an organic value of 250 to 450 and an inorganic value of 50 to 200.

[0040] It is preferable to incorporate one or more compounds having an ester bond and an organic value of less than 500, selected from among the components used in known non-aqueous hair compositions, into the non-aqueous hair composition of this embodiment as component (D). Examples of component (D) include ester oils, nonionic surfactants, and ultraviolet absorbers.

[0041] The ester oil described above as component (D) is an ester obtained by synthesis with an organic value of less than 500, and is classified as an ester oil in the field of non-aqueous hair compositions. Examples of such ester oils include adipic acid esters such as diisobutyl adipate (OV260, IV120; "OV" means organic value, and "IV" means inorganic value), diisopropyl adipate (OV220, IV120), diethoxyethyl adipate (OV280, IV160), dioctyl adipate (OV420, IV120), and dibutyl adipate (OV280, IV120); diethyl acetyl aspartate (OV200, IV320), diethyl acetyl aspartate ( Acetyl aspartate esters such as OV200, IV320; benzoic acid esters such as alkyl benzoate (C12-C15) (OV410, IV75; OV and IV are average values ​​for alkyl groups with 12, 13, 14, and 15 carbon atoms); isostearate esters such as isopropyl isostearate (OV400, IV60) and hexyl isostearate (OV470, IV60); isotridecyl isononanoate (OV400, IV60) and ethylhexyl isononanoate (OV330, IV60) Isononanoate esters such as; ethylhexanoate esters such as cetyl ethylhexanoate (OV470, IV60), cetearyl ethylhexanoate (OV490, IV60), hexyldecyl ethylhexanoate (OV460, IV60); oleate esters such as ethyl oleate (OV400, IV62); citrate esters such as isopropyl citrate (OV160, IV460), triethyl citrate (OV230, IV280); diethylhexyl succinate (OV380, IV120), succinate Succinate esters such as diethoxyethyl acid (OV240, IV270); diethylhexanoate esters such as glycol diethylhexanoate (OV340, IV120); dieopentanoate esters such as methylpentanediol dieopentanoate (OV270, IV120); diheptanoate esters such as neopentyl glycol diheptanoate (OV360, IV120); stearate esters such as ethyl stearate (OV400, IV60) and butyl stearate (OV440, IV60);Sebacate esters such as diisopropyl sebacate (OV300, IV120) and diethyl sebacate (OV280, IV120); neopentanoate esters such as isostearyl neopentanoate (OV430, IV60), isodecyl neopentanoate (OV270, IV60), octyldodecyl neopentanoate (OV470, IV60), tridecyl neopentanoate (OV340, IV60), and myristyl neopentanoate (OV360, IV60); ascorbyl palmitate (OV440, IV482), isopropyl palmitate (OV370, IV60), palmitate Examples include palmitic acid esters such as ethylhexyl palmate (OV470, IV60) and glycol palmitate (OV360, IV160); propionic acid esters such as arachidyl propionate (OV460, IV60); pelargonic acid esters such as ethylhexyl pelargonate (OV330, IV60); myristic acid esters such as isopropyl myristate (OV330, IV60), decyl myristate (OV480, IV60), and butyl myristate (OV360, IV60); and lauric acid esters such as hexyl laurate (OV360, IV60).

[0042] In the non-aqueous hair composition of this embodiment, it is preferable to include one or more ester oils selected from ester oils as component (D). When ester oil is included as component (D) in the non-aqueous hair composition of this embodiment, the amount of ester oil in the composition is preferably 0.01% by mass or more and less than 10% by mass, preferably 0.05% by mass or more and less than 7.5% by mass, and preferably 0.1% by mass or more and less than 5.0% by mass. If the amount of component (C) is 0.01% by mass or more, it is suitable for improving the moist feeling of the hair after drying, and if it is less than 10% by mass, it is suitable from the viewpoint of a smooth feel of the hair.

[0043] The nonionic surfactant as component (D) may be one or more types selected from known nonionic surfactants having an organic value of less than 500. Examples of such nonionic surfactants include PEG-3 isostearate (OV470, IV310), PG oleate (OV420, IV162), glyceryl oleate (OV420, IV262), sorbitan oleate (OV480, IV392), polyglyceryl-2 oleate (OV480, IV382), PEG-2 stearate (OV440, IV235), sorbitan palmitate (OV440, IV390), glyceryl myristate (OV340, IV260), glyceryl laurate (OV300, IV260), sucrose laurate (OV480, IV1005), and sorbitan laurate (OV360, IV445).

[0044] The UV absorber as component (D) may be one or more UV absorbers selected from known UV absorbers having an organic value of less than 500. Examples of such UV absorbers include ethylhexyl salicylate (OV290, IV175), diethylamino hydroxybenzoyl hexyl benzoate (OV480, IV325), and ethylhexyl methoxycinnamate (OV350, IV75).

[0045] (optional ingredient) The non-aqueous hair composition of this embodiment may contain components that are used in known non-aqueous hair compositions as optional components. However, due to supply concerns, it is preferable to avoid including volatile cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, or to limit their amount. The amount of volatile cyclic silicone in the non-aqueous hair composition of this embodiment is preferably less than 5% by mass, more preferably less than 3% by mass, more preferably less than 1% by mass, even more preferably less than 0.1% by mass, and even more preferably less than 0.05% by mass.

[0046] Furthermore, for highly hygroscopic components such as ethanol, it is preferable to avoid their inclusion or limit their amount in order to suppress the separation of the aqueous and oil phases. The amount of ethanol in the non-aqueous hair composition of this embodiment is preferably less than 3% by mass, more preferably less than 1% by mass, more preferably less than 0.5% by mass, even more preferably less than 0.1% by mass, and even more preferably less than 0.01% by mass.

[0047] Optional components that can be incorporated into the non-aqueous hair composition of this embodiment include, for example, nonionic surfactants, cationic surfactants, anionic surfactants, amphoteric surfactants, higher alcohols, hydrocarbons, waxes, ester oils, vegetable oils, silicones, polymer compounds, UV absorbers, preservatives, chelating agents, fragrances, and colorants (any optional component other than those corresponding to components (A), (B), (C), and (D)).

[0048] When silicone is included as an optional ingredient, the inclusion of amino-modified silicone is suitable for improving the manageability of the hair during the drying process, as well as the softness and moisturizing effect of the hair after drying. This amino-modified silicone may be one or more selected from known amino-modified silicones, such as aminoethylaminopropylsiloxane-dimethylsiloxane copolymer and aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer. The amount of amino-modified silicone in the non-aqueous hair composition of this embodiment is preferably 0.05% by mass or more and 1.5% by mass or less, preferably 0.1% by mass or more and 1.0% by mass or less, and more preferably 0.1% by mass or more and 0.5% by mass or less.

[0049] (Dosage form) The dosage form of the non-aqueous hair composition of this embodiment is not particularly limited and may be, for example, liquid, cream, or mist.

[0050] (viscosity) The viscosity of the non-aqueous hair composition of this embodiment is preferably 50 mPa·s or more and less than 5000 mPa·s, more preferably 100 mPa·s or more and less than 3000 mPa·s, more preferably 150 mPa·s or more and less than 1000 mPa·s, even more preferably 200 mPa·s or more and less than 800 mPa·s, and even more preferably 200 mPa·s or more and less than 600 mPa·s. A viscosity of 50 mPa·s or more is suitable for handling when applying the non-aqueous hair composition of this embodiment by hand, and a viscosity of less than 5000 mPa·s is suitable for penetration into the hair. The viscosity of the non-aqueous hair composition in this embodiment was measured using a rheometer (for example, a HAAKE Rheo Stress 6000 rheometer) at a temperature of 25°C, with a cone plate sensor diameter of 35 mm, a cone plate sensor tilt angle of 2°, and a shear rate dγ / dt of 36 s. -1 This is the value measured in steady-state flow curve mode under these conditions.

[0051] (Application) The non-aqueous hair composition of this embodiment is used as a hair treatment composition and is preferably used as a leave-in treatment. When using it, it is suitable for hair with a history of chemical treatment (such as oxidative dyeing, bleaching, or hair straightening) and hair without such treatment history. For example, after washing the hair and drying it with a towel, the non-aqueous hair composition of this embodiment is sprayed or applied by hand, and then dried with warm air as needed. [Examples]

[0052] The present invention will be described in detail below based on examples, but the present invention should not be interpreted as being limited based on the description of these examples.

[0053] Non-aqueous hair compositions were prepared as examples, comparative examples, and reference examples, and these compositions were evaluated during and after the hair treatment process. Details are as follows.

[0054] (Non-aqueous hair composition) Non-aqueous hair compositions with the components and proportions listed in Tables 1-8 below were prepared as examples, comparative examples, and reference examples. The component used in this preparation was NOF Corporation's "Pearlream 4" (light liquid isoparaffin (kinematic viscosity 3.1 mm)). 2 / s·37.8℃, flash point 96℃), NOF Corporation's "Pearlream 3" (light isoparaffin (kinematic viscosity 1.4mm) 2 / s·37.8℃, flash point 61℃), Idemitsu Kosan Co., Ltd.'s "IP Solvent 2028" (light liquid isoparaffin, kinematic viscosity 2.6 mm) 2 / s·37.8℃, flash point 86℃), BASF Japan's "Cetiol Ultimate" (undecane / tridecane (flash point 74℃)), Nikko Chemicals' "NEOSSANCE HEMISQUALANE" ((C13-15) alkane (flash point 110℃)), MORESCO's "Moresco White P-70" (liquid paraffin (kinematic viscosity 13.5mm) 2 / s·37.8℃, flash point 130℃ or higher), LANXESS Distribution's "PUROLAN IDD" (isododecane (kinematic viscosity 1.35mm) 2 / s·37.8℃, flash point 45℃), KCC's "Sera Sence SF 1.5" (decamethyltetrasiloxane (1.5mm) 2 / s·25℃)), Dow Toray's "DOWSIL BY 25-320" (containing 20% ​​high polymer methylpolysiloxane and 80% light liquid isoparaffin), Dow Toray's "DOWSIL SH200C FLUID 5cSt" (dimethylpolysiloxane (5mm 2 The ingredients are Momentive Performance Materials' "XF42-C0330" (aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer), isodecyl neopentanoate, diethoxyethyl succinate, C12-15 alkyl benzoate, PEG-2 stearate, ethylhexyl palmitate, dioctyl sebacate, and glyceryl stearate.

[0055] (Hair treatment) After wetting the hair strands with running water, the hair cleansing composition was rubbed in, lathered while combing with fingers, and then rinsed off with running water. Next, the hair strands were immersed in a mixture of hair cleansing composition and water in a mass ratio of 1:20, and ultrasonic cleaning was performed for 30 minutes. After that, the hair cleansing composition was thoroughly rinsed off the hair strands with running water. Then, 0.2g of any of the compositions from the Examples, Comparative Examples, and Reference Examples was applied to the wet hair strands, which had only been towel-dried, and the hair was dried with a hairdryer.

[0056] The details of the hair bundles and hair cleansing compositions used in the hair treatment are as follows: Hair bundles: Hair bundles created by bundling one end of hair collected from Japanese women. Each hair bundle is approximately 35 cm long and weighs approximately 10 g. Hair cleansing composition: 10% by mass aqueous solution of Kao Corporation's "Emal 227HP" sodium laureth sulfate-containing product.

[0057] (evaluation) Five evaluators conducted sensory evaluations of the Examples and Comparative Examples for "smoothness during drying" and "moisture after drying," while the Reference Example was evaluated solely for "smoothness during drying." The evaluation of "smoothness during drying" assessed how easily the hair strands could be combed through during the drying process with a hairdryer. The evaluation of "moisture after drying" assessed the moist feel of the hair strands after the hair treatment process, which involved drying with a hairdryer. For these evaluations, each evaluator assigned a score to their evaluation scale, and the average of these scores was used as the final evaluation.

[0058] As will be explained later based on Tables 1 to 8 below, in the following examples and comparative examples, it can be confirmed that the addition of ingredient (D) improves the "moisture after drying" while maintaining the degree of "smoothness after drying" compared to when ingredient (D) is not included. In addition, in the reference example, it can be confirmed that the configuration of the present invention other than ingredient (D) improves the "smoothness after drying."

[0059] Table 1 below shows the components, amounts, and evaluation results of the compositions for Examples 1a-1e and Comparative Examples 1a-1c. The evaluation scale used by the evaluators to determine the average score is as follows, with Comparative Example 1a as the baseline. Much better than the standard: 3 points Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0060] [Table 1]

[0061] In Table 1, Examples 1a to 1e, which contained component (D) with an organic value of less than 500, tended to have a better moist feel after drying than Comparative Examples 1a to 1c, which did not contain component (D). Furthermore, the smoothness of the hair after drying in Examples 1a to 1e was equal to or better than that of Comparative Example 1a.

[0062] Table 2 below shows the components, amounts, and evaluation results of the compositions for Examples 2a-2c and Comparative Examples 2a-2b. The evaluation scale used by the evaluators to determine the average score was as follows, with Comparative Example 2a as the baseline. Much better than the standard: 3 points Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0063] [Table 2]

[0064] In Table 2, Examples 2a-2c, which contained component (D) with an organic value of less than 500, tended to have a better moist feel after drying than Comparative Examples 2a-2b, which did not contain component (D). Furthermore, the smoothness of the hair after drying in Examples 2a-2c was equal to or better than that of Comparative Example 2a.

[0065] Table 3 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 1a to 1f. The evaluation scale used by the evaluators to determine the average score is as follows, with Reference Example 1e as the standard. Much better than the standard: 3 points Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0066] [Table 3]

[0067] Table 3 shows that Reference Examples 1a to 1d, which contain components (A), (B), and (C) and have a concentration of 15% by mass or more of component (A), exhibited superior smoothness when dry compared to Reference Examples 1e to 1f, which contain less than 15% by mass of component (A). Furthermore, Reference Examples 1e to 1f, which contain hydrocarbons other than component (A) (liquid paraffin or isododecane), exhibited inferior smoothness when dry compared to Reference Examples 1a to 1d, indicating that increasing the concentration of component (A) is advantageous in terms of smoothness when dry.

[0068] Table 4 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 2a and 2b. The evaluation scale used by the evaluators to determine the average score is as follows, with Reference Example 2b as the standard. Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0069] [Table 4]

[0070] Table 4 shows that Reference Example 2a, which contains components (A), (B), and (C) and has a concentration of component (A) of 15% by mass or more, exhibited superior smoothness when dry compared to Reference Example 2b, which has a concentration of component (A) of less than 15% by mass.

[0071] Table 5 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 3a to 3b. The evaluation scale used by the evaluators, which forms the basis of the average score evaluation results, is as follows. Of the two examples, 3a and 3b, the best is: 3 points Second best among Reference Examples 3a and 3b: 1 point

[0072] [Table 5]

[0073] Table 5 shows that Reference Example 3a received a better evaluation than Reference Example 3b, confirming that the inclusion of decamethyltetrasiloxane, a volatile acyclic silicone, is suitable for improving finger-feel during drying.

[0074] Table 6 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 4a to 4c. The evaluation scale used by the evaluators, which forms the basis of the average score evaluation results, is as follows. Of the examples 4a-4c, the best is: 3 points Second best among the reference examples 4a-4c: 2 points Third best among the reference examples 4a-4c: 1 point

[0075] [Table 6]

[0076] In the comparison of Reference Examples 4a-4b and 4c in Table 6, it can be confirmed that reducing the amount of component (A) was optimal for improving the smoothness of the hair when dry. Furthermore, in the comparison of Reference Examples 3a-3b and 3c, it can be confirmed that increasing the amount of component (B) was optimal for improving the smoothness of the hair when dry.

[0077] Table 7 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 5a to 5b. The evaluation scale used by the evaluators to determine the average score is as follows, with Reference Example 5b as the standard. Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0078] [Table 7]

[0079] Table 7 confirms that, from the viewpoint of smoothness after drying, the amount of high polymerized methylpolysiloxane, which is component (C), is preferably less than 10% by mass.

[0080] Table 8 below shows the components, amounts, and evaluation results of the compositions related to Reference Examples 6a to 6d. The evaluation scale used by the evaluators to determine the average score is as follows, with Reference Example 6b as the standard. Much better than the standard: 3 points Exceeding the standard: 2 points Standard or equivalent: 1 point Below average: 0 points

[0081] [Table 8]

[0082] Table 8 confirms that the inclusion of amino-modified silicone (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer) was suitable for improving the smoothness of the hair after drying.

Claims

1. A non-aqueous hair composition comprising the following components (A), (B), (C), and (D), wherein the amount of component (A) is 15% by mass or more. (A) Kinematic viscosity at 37.8°C is 1.38 mm ２ / s or more 13.0mm ２ hydrocarbons below / s (B) Volatile acyclic silicones and / or isododecanes (C) Highly polymerized methylpolysiloxane and / or highly polymerized dimethiconol (D) Compounds having an ester bond and having an organic value of less than 500

2. The non-aqueous hair composition according to claim 1, wherein the component (D) is a compound having an ester bond with an organic value of 100 to 490 and an inorganic value of 40 to 350.

3. The non-aqueous hair composition according to claim 1, wherein the aforementioned component (D) is an ester oil.

4. The non-aqueous hair composition according to claim 1, wherein the amount of volatile cyclic silicone is less than 5% by mass or is not included.

5. The aforementioned component (A) has a kinematic viscosity of 10.0 mm at 37.8°C. ２ The non-aqueous hair composition according to claim 4, comprising hydrocarbons of / s or less.

6. The non-aqueous hair composition according to claim 4, wherein the component (A) is a light liquid isoparaffin.

7. The non-aqueous hair composition according to claim 6, wherein the amount of the light liquid isoparaffin is greater than 10% by mass.

8. The non-aqueous hair composition according to claim 4, wherein the component (B) contains 10% by mass or more of a volatile acyclic silicone.

9. The non-aqueous hair composition according to claim 4, wherein the component (B) contains less than 35% by mass of isododecane.

10. The non-aqueous hair composition according to claim 4, wherein the amount of component (C) is less than 15% by mass.

11. The non-aqueous hair composition according to claim 10, wherein the aforementioned component (C) contains less than 10% by mass of highly polymerized methylpolysiloxane.

12. The non-aqueous hair composition according to claim 4, comprising an amino-modified silicone.

13. A hair treatment method using the non-aqueous hair composition described in claim 4.

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