Hair oil composition

Abstract

Provided is a hair oil composition comprising (A) 0.5 mass% to 20 mass% inclusive of isoparaffin having an average number of carbon atoms of 50 to 250 inclusive, (B) 10 mass% to 50 mass% inclusive of isoparaffin having an average number of carbon atoms of 20 to 24 inclusive, (C) 20 mass% to 60 mass% inclusive of a volatile oil agent having a kinematic viscosity of 20 mm2 / s or less at 25°C; and (D) 5 mass% to 40 mass% inclusive of an ester oil that is in a liquid form at 25°C, wherein the ratio of the mass of the component (A) to the mass of the component (B), ((A) / (B)), is 1 / 20 to 3 / 2 inclusive.

Description

Hair oil composition

[0001] This invention relates to a hair oil composition that is applied to the hair and left on.

[0002] Hair is subjected to various types of damage on a daily basis, including dryness, UV rays, heat from hair dryers and irons, and friction from brushing. Furthermore, coloring and perming can exacerbate this damage. Leave-in hair cosmetics, such as hair oils, are used to protect hair from these external stimuli and to care for damaged hair.

[0003] For example, Patent Document 1 describes a hair cosmetic containing a high-molecular-weight silicone, a volatile hydrocarbon oil, a cholesterol derivative, and a low-viscosity silicone oil. According to the same document, this hair cosmetic provides excellent spreadability, smoothness, and a flexible feel when applied to the hair, does not leave any stickiness on the hair, and provides a smooth feel, softness, and moderate manageability (sufficient hold) to the hair after application.

[0004] Furthermore, Patent Document 2 describes an oily hair cosmetic containing predetermined amounts of hydrocarbon oil or silicone oil with a flash point of 100°C or less, hydrocarbon oil with a flash point of 170°C or higher, and Crambe abyssinica seed oil. The same document states that this oily hair cosmetic can suppress stickiness after application while providing the hair with manageability, smoothness, and excellent shine.

[0005] Furthermore, Patent Document 3 describes a hair cosmetic containing tocopherol or its ester, a higher alcohol, silicone, and a volatile oil. According to the same document, this hair cosmetic provides good separation of hair strands when dry, and gives the finished product moisture, softness, and shine while suppressing stickiness, and the effects are long-lasting.

[0006] Japanese Patent Publication No. 2007-223930, Japanese Patent Publication No. 2020-193152, Japanese Patent Publication No. 2022-32172

[0007] However, while the hair cosmetics described in these patent documents are easily absorbed by the hair, provide excellent shine, and suppress stickiness, they sometimes lacked the durability of shine and non-stickiness under high humidity conditions such as the rainy season and summer. In view of the above problems, the present invention aims to provide a hair oil composition that is easily absorbed by the hair, provides excellent shine, suppresses stickiness, and also exhibits excellent durability of shine and non-stickiness even under high humidity conditions such as the rainy season and summer.

[0008] In order to solve the above problems, the inventors conducted diligent research and found that the above problems could be solved by combining two specific types of isoparaffin, a specific volatile oil, and an ester oil that is liquid at 25°C in specific mass ratios, thus completing the present invention.

[0009] In other words, the present invention provides (A) 0.5% to 20% by mass of isoparaffin having an average carbon number of 50 to 250, (B) 10% to 50% by mass of isoparaffin having an average carbon number of 20 to 24, and (C) a kinematic viscosity of 20 mm at 25°C. ２ The hair oil composition contains 20% to 60% by mass of a volatile oil agent with a concentration of 0.5% or less / s, and 5% to 40% by mass of an ester oil that is liquid at 25°C, with a mass ratio of component (A) to component (B) ((A) / (B)) of 1 / 20 to 3 / 2.

[0010] The hair oil composition of the present invention is easily absorbed by the hair, provides excellent shine, and suppresses stickiness, while also maintaining excellent shine and non-stickiness even under high humidity conditions such as the rainy season and summer.

[0011] Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the embodiments described in this specification, and various modifications can be made without departing from the gist of the present invention. Each upper limit value and each lower limit value described step by step in this specification can be the upper limit value or the lower limit value of an arbitrarily combined numerical range. Also, the values explicitly shown in this specification or the values derived from the description in this specification can also be the upper limit value or the lower limit value of a numerical range. For example, if there is a description such as "numerical values of an arithmetic progression with a common difference of 1 within the range of 1 or more and 5 or less", not only the explicitly described 1 and 5, but also 2, 3, and 4 derived from this description can be the upper limit value or the lower limit value of the numerical range. Each numerical value described in this specification is interpreted by rounding the numerical value in the first decimal place in the case of an integer value. Also, in the case of a decimal value (including a pure decimal and a mixed decimal), the numerical value in the (n + 1)-th decimal place is rounded for the numerical value in the n-th decimal place and interpreted. For example, in the case of 5.1, the numerical value in the second decimal place, and in the case of 0.10, the numerical value in the third decimal place are rounded and interpreted respectively.

[0012] <Hair oil composition> The hair oil composition of the present invention contains component (A), component (B), component (C), and component (D). Hereinafter, each component will be described.

[0013] [Component (A)] Component (A) used in the present invention is an isoparaffin having an average carbon number of 50 or more and 250 or less. This isoparaffin is a mixture of long-chain hydrocarbons having side chains, and is usually obtained by hydrogenating a polymer of isobutene and n-butene. Examples of such components include those generally classified as "heavy liquid isoparaffin" in the cosmetic field.

[0014] The upper limit of the average carbon number of the isoparaffin is 250, preferably 230, more preferably 210, and particularly preferably 190. The lower limit is 50, preferably 60, more preferably 70, and particularly preferably 80. The range of the average carbon number of the isoparaffin is composed of combinations of numerical values of an arithmetic progression with a tolerance of 10 within the range of 50 or more and 250 or less. For example, 50 or more and 250 or less, 60 or more and 230 or less, 70 or more and 210 or less, 80 or more and 190 or less can be mentioned. If the average carbon number is less than 50, the gloss of the hair and the persistence of the gloss may be inferior. On the other hand, if the average carbon number exceeds 250, the ease of application and the non-greasy feeling of the hair may be inferior.

[0015] The average carbon number in this specification is a numerical value derived using gel permeation chromatography (GPC). For example, it can be measured under the following conditions. [Measurement conditions] Apparatus: HLC-8220GPC manufactured by Tosoh Corporation Column: Shodex (registered trademark) GPC LF-804 manufactured by Resonac Co., Ltd. Standard substance: Polystyrene Eluent: THF (tetrahydrofuran) Flow rate: 1.0 ml / min Column temperature: 40 °C Detector: RI (differential refractive index detector)

[0016] The isoparaffin of component (A) preferably has an upper limit of kinematic viscosity at 98 °C of 10000 mm ２ / s, more preferably 7500 mm ２ / s, and particularly preferably 5000 mm ２ / s. The lower limit of the kinematic viscosity at 98 °C is preferably 100 mm ２ / s, more preferably 300 mm ２ / s, and particularly preferably 800 mm ２ / s. The range of the kinematic viscosity at 98 °C is composed of combinations of numerical values of an arithmetic progression with a tolerance of 100 mm ２ / s or more and 10000 mm ２ / s or less, and is composed of combinations of an arithmetic progression with a tolerance of 100 mm ２ / s. For example, 100 mm ２ / s or more and 10000 mm ２ / s or less, 300 mm２ 7500 mm or more per second ２ 800 mm or less, per second ２ 5000 mm or more per second ２ include those of less than per second

[0017] In this specification, the kinematic viscosity of isoparaffin and the following volatile oil agents is a value measured by a method conforming to JIS K 2283:2000. For example, at the measurement temperature, it can be measured using an automatic viscosity measuring device (VMC-252 type) (manufactured by離合社 Co., Ltd.) with an Ubbelohde viscometer (viscometer number 2).

[0018] Specific products of component (A) include "Pearl Ream 18" (average carbon number 72, kinematic viscosity (mm ２ / s, 98 °C) = 300), "Pearl Ream 24" (average carbon number 96, kinematic viscosity (mm ２ / s, 98 °C) = 800), "Pearl Ream 46" (average carbon number 184, kinematic viscosity (mm ２ / s, 98 °C) = 4700) (all manufactured by NOF Corporation), etc. As component (A), one or more selected from these isoparaffins with different average carbon numbers can be used. Note that "Pearl Ream" is a registered trademark of NOF Corporation.

[0019] The content of the above component (A) has an upper limit value of 20% by mass, preferably 15% by mass, more preferably 10% by mass, a lower limit value of 0.5% by mass, preferably 1% by mass, and more preferably 3% by mass, based on the total amount of the hair oil composition (100% by mass, the same applies hereinafter). The range of the content of component (A) is composed of combinations of numerical values in an arithmetic progression with a tolerance of 0.1% by mass within the range of 0.5% by mass or more and 20% by mass or less based on the total amount of the hair oil composition. For example, 0.5% by mass or more and 20% by mass or less, 1% by mass or more and 15% by mass or less, 3% by mass or more and 10% by mass or less can be mentioned. If the content of component (A) is less than 0.5% by mass, the gloss of the hair and the persistence of the gloss may be inferior. If it exceeds 20% by mass, the ease of spreading during application, the lack of stickiness of the hair, and the persistence of the lack of stickiness may be inferior.

[0020] [Component (B)] Component (B) used in the present invention is an isoparaffin having an average carbon number of 20 or more and 24 or less. This isoparaffin is a mixture of medium-chain hydrocarbons having side chains, and is usually obtained by hydrogenating a polymer of isobutene and n-butene. Examples of such components include those generally classified as "liquid isoparaffins" in the cosmetics field.

[0021] If the average carbon number is less than 20, volatility increases, which can result in poor non-greasy hair and reduced persistence of that non-greasy feeling. On the other hand, if the average carbon number exceeds 24, it can result in poorer application and reduced non-greasy hair.

[0022] The isoparaffin in component (B) has an upper limit of kinematic viscosity of 100 mm at 37°C. ２ It is preferable that it be / s, and 75 mm ２ It is more preferable that it be / s, 50 mm ２ It is particularly preferable that the kinematic viscosity at 37°C be 8 mm. ２ It is preferable that it be / s, 9 mm ２ It is more preferable that it be / s, 10 mm ２ It is particularly preferable that the kinematic viscosity is / s. The range of kinematic viscosity at 37°C is 8 mm ２ / s or more 100mm ２ Tolerance of 1 mm within the range of / s or less ２ It is constructed by combining numerical values ​​in an arithmetic progression of / s, for example, 8 mm ２ / s or more 100mm ２ / s or less, 9mm ２ / s or more 75mm ２ / s or less, 10mm ２ / s or more 50mm ２ Examples include those below / s.

[0023] As a specific product of component (B), "Pearlream EX" (average carbon number 20, kinematic viscosity (mm) ２ ( / s, 37℃) = 11), "Pearlream 6" (average carbon number 24, kinematic viscosity (mm) ２Examples include ( / s, 37°C) = 20) (both manufactured by NOF Corporation). As component (B), one or more types selected from these isoparaffins with different average carbon numbers can be used.

[0024] The content of component (B) described above has an upper limit of 50% by mass, preferably 45% by mass, more preferably 40% by mass, and a lower limit of 10% by mass, preferably 15% by mass, and more preferably 20% by mass, relative to the total amount of the hair oil composition. The range of the content of component (B) is composed of a combination of arithmetic progression values ​​with a tolerance of 1% by mass, within the range of 10% by mass or more and 50% by mass or less, relative to the total amount of the hair oil composition. Examples include 10% by mass or more and 50% by mass or less, 15% by mass or more and 45% by mass or less, and 20% by mass or more and 40% by mass or less. If the content of component (B) is less than 10% by mass, the non-greasy feeling of the hair and the persistence of the non-greasy feeling may be poor, and if it exceeds 50% by mass, the ease of application and the persistence of the shine may be poor.

[0025] [Component (C)] Component (C) used in this invention has a kinematic viscosity of 20 mm at 25°C. ２ A volatile oil agent with a viscosity of 15 mmHg or less is used, for example, at least one compound selected from the group consisting of volatile silicone oils and volatile hydrocarbon oils. From the viewpoint of having the property of rapidly volatilizing and drying on the hair, the kinematic viscosity at 25°C is 15 mmHg. ２ Preferably less than / s, and 10 mm ２ / s or less is more preferable, and 5 mm ２ A value of less than or equal to / s is particularly preferred. The lower limit of the kinematic viscosity at 25°C is preferably 0.5 mm. ２ / s, more preferably 1.0 mm ２ It is / s. The range of kinematic viscosity at 25°C is, for example, 0.5 mm. ２ / s or more 20mm ２ / s or less, 0.5mm ２ / s or more 15mm ２ / s or less, 0.5mm ２ / s or more 10mm ２ / s or less, 0.5mm ２ / s or more 5mm ２ / s or less, 1.0mm２ / s or more 5mm ２ Examples include those below / s.

[0026] Examples of such volatile silicone oils include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane (hereinafter sometimes referred to as cyclopentasiloxane), dodecamethylcyclohexasiloxane, and methyl trimethicone. Examples of volatile hydrocarbon oils include hydrogenated polyisobutene, isododecane, and isohexadecane. Among these, decamethylcyclopentasiloxane, hydrogenated polyisobutene, and isododecane are preferred. One or more selected from these can be used.

[0027] The content of component (C) described above has an upper limit of 60% by mass, preferably 55% by mass, more preferably 50% by mass, and a lower limit of 20% by mass, preferably 25% by mass, and more preferably 30% by mass, relative to the total amount of the hair oil composition. The range of the content of component (C) is composed of a combination of arithmetic progression values ​​with a tolerance of 1% by mass, within the range of 20% by mass or more and 60% by mass or less, relative to the total amount of the hair oil composition. Examples include 20% by mass or more and 60% by mass or less, 25% by mass or more and 55% by mass or less, and 30% by mass or more and 50% by mass or less. If the content of component (C) is less than 20% by mass, the ease of application and the lack of stickiness on the hair may be inferior, and if it exceeds 60% by mass, the shine of the hair may be inferior.

[0028] [Component (D)] Component (D) used in the present invention is an ester oil that is liquid at 25°C. "Liquid at 25°C" means that the pour point is 25°C or lower, and the pour point is evaluated at temperatures measured in 1°C increments in accordance with JIS K 2269:1987. The lower limit of the pour point is -65°C.

[0029] Examples of ester oils that are liquid at 25°C include triglycerides and fatty acid monoesters.

[0030] Triglycerides include vegetable oils and synthetic oils. Examples of vegetable oils include camellia oil, olive oil, avocado oil, meadowfoam oil, macadamia nut oil, coconut oil, sunflower oil, and sesame oil. Examples of synthetic oils include glyceryl triisostearate, glyceryl triisopalmitate, glyceryl tri-2-ethylhexanoate, and glyceryl tri(caprylic / capric acid). Among these, vegetable oils are preferred, olive oil and camellia oil are more preferred, and olive oil is particularly preferred.

[0031] As fatty acid monoesters, ester oils of a linear or branched saturated or unsaturated fatty acid having 8 to 18 carbon atoms and a linear or branched saturated or unsaturated alcohol having 2 to 18 carbon atoms are preferred. The number of carbon atoms in the linear or branched saturated or unsaturated fatty acid is more preferably 12 to 16. The number of carbon atoms in the linear or branched saturated or unsaturated alcohol is more preferably 2 to 10, and particularly preferably 2 to 4. As fatty acid monoesters, isopropyl myristate, isopropyl palmitate, cetyl 2-ethylhexanoate, isononyl isononanoate, and ethyl oleate are more preferred, with isopropyl myristate being particularly preferred. One or more selected from these can be used.

[0032] The content of component (D) described above has an upper limit of 40% by mass, preferably 35% by mass, more preferably 30% by mass, and a lower limit of 5% by mass, preferably 10% by mass, and more preferably 15% by mass, relative to the total amount of the hair oil composition. The range of the content of component (D) is composed of a combination of arithmetic progression values ​​with a tolerance of 1% by mass, within the range of 5% by mass or more and 40% by mass or less, relative to the total amount of the hair oil composition. Examples include 5% by mass or more and 40% by mass or less, 10% by mass or more and 35% by mass or less, and 15% by mass or more and 30% by mass or less. If the content of component (D) is less than 5% by mass, the ease of application and the shine of the hair may be inferior, and if it exceeds 40% by mass, the non-greasy feeling of the hair may be inferior.

[0033] In the present invention, the mass ratio of component (A) to component (B) ((A) / (B)) has an upper limit of 3 / 2, preferably 6 / 5, more preferably 1 / 1, and a lower limit of 1 / 20, preferably 1 / 9, and more preferably 1 / 4. The range of the mass ratio ((A) / (B)) is constructed by combining numerical values ​​in an arithmetic progression with a tolerance of 1 / 180 within the range of 1 / 20 to 3 / 2, for example, 1 / 20 to 3 / 2, 1 / 9 to 6 / 5, and 1 / 4 to 1 / 1. If the mass ratio ((A) / (B)) is less than 1 / 20, the persistence of shine may be poor, and if it exceeds 3 / 2, the non-stickiness of the hair and the persistence of non-stickiness may be poor.

[0034] [Other Ingredients] The hair oil composition of the present invention is prepared by using the above-mentioned ingredients (A), (B), (C), and (D) as essential ingredients, and adding additives such as fragrances and acid value inhibitors as needed. In addition to these ingredients (A) through (D) and additives, other ingredients commonly used in hair oil compositions may also be added as needed, as long as they do not impair the effects of the present invention.

[0035] Other components as described above include, for example, nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene sorbitan fatty acid esters, and glycerin fatty acid esters; cationic surfactants such as stearyltrimethylammonium chloride and alkyltrimethylammonium chloride; higher alcohols such as cetanol and stearyl alcohol; humectants such as glycerin, propylene glycol, butylene glycol, dipropylene glycol, and glycosyl trehalose; higher fatty acids such as stearic acid, behenic acid, oleic acid, isostearic acid, and 2-ethylhexanoic acid; and other components such as UV absorbers, preservatives, sugars, fragrances, colorants, antioxidants, and various chemicals. The content of other components (including additives such as fragrances and acid value inhibitors) excluding components (A) through (D) may be set according to the amount normally used in hair cosmetics, depending on the purpose, but is preferably 5% by mass or less, and more preferably 3% by mass or less, based on the total amount of the hair oil composition. The content of other components (including additives such as fragrances and acid value inhibitors) may be 0% by mass.

[0036] The hair oil composition of the present invention can be prepared by mixing and stirring various components using conventional methods.

[0037] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited in any way to these examples.

[0038] <Examples 1-6, Comparative Examples 1-6> [Preparation of Hair Oil Compositions] The hair oil compositions of Examples 1-6 and Comparative Examples 1-6 were prepared by mixing components (A), (B), (C), and (D) shown in Tables 1 and 2 at 25°C. Commercially available cosmetic products were used for each component in Tables 1 and 2. The product names of *1 to *7 in Tables 1 and 2 are shown below.

[0039] Furthermore, the kinematic viscosity (mm) of component C1 (cyclopentasiloxane) ２ The kinematic viscosity (mm²) of component C2 (isododecane) is 4.0 (at 25°C). ２The pour point (at s, 25°C) is approximately 1.4. The pour point of component D1 (olive oil) is between 0°C and 6°C, and the pour point of component D2 (isopropyl myristate) is between 3°C and 9°C. The content of each component in Tables 1 and 2 is shown in mass percent.

[0040] *1: "Pearlream 18" (NOF Corporation): Average carbon number 72, kinematic viscosity (mm²) ２ / s, 98℃) = 300 *2: "Pearlream 24" (NOF Co., Ltd.): Average carbon number 96, kinematic viscosity (mm) ２ / s, 98℃) = 800 *3: "Pearlream 46" (NOF Co., Ltd.): Average carbon number 184, kinematic viscosity (mm²) ２ ( / s, 98℃) = 4700 *4: "Pearlream EX" (NOF Co., Ltd.): Average carbon number 20, kinematic viscosity (mm²) ２ / s, 37℃) = 11 *5: "Pearlream 6" (NOF Co., Ltd.): Average carbon number 24, kinematic viscosity (mm ２ / s, 37℃) = 20 *6: "Pearl Ream 3" (NOF Co., Ltd.): Kinematic viscosity (mm) ２ / s, 25℃) = 2.9 *7: "Pearlream 4" (NOF Co., Ltd.): Kinematic viscosity (mm) ２ ( / s, 25℃) = 6.9

[0041] [Hair Pretreatment Method] A bundle of healthy black hair (human black hair (roots aligned), product number: BS-B3A, 10g, 30cm, Beaulux Co., Ltd.) was washed with 2g of a 25% by mass sodium polyoxyethylene lauryl ether sulfate aqueous solution and rinsed thoroughly with 40°C tap water. After towel drying, it was dried with a hairdryer.

[0042] [Evaluation Test] Using hair strands that had undergone the above pretreatment, each hair oil composition was evaluated as follows. Prior to the evaluation test, each panelist was trained in a preliminary evaluation test to ensure that their evaluation levels for each score were roughly consistent, thus preventing any discrepancies in evaluation criteria among the panelists.

[0043] (1) Ease of application Ten panelists (5 men, 5 women, aged 25-45) took an appropriate amount of the hair oil composition in their palms and applied it evenly to the hair strands that had undergone the above pretreatment. At this time, the ease of application was evaluated according to the following absolute evaluation criteria. The total score of each panelist's evaluation was calculated, and based on that total score, it was evaluated in three stages, "A", "B", and "C", according to the following evaluation criteria. An evaluation of "A" or "B" was considered a pass.

[0044] <Absolute Evaluation Criteria> (Score): (Evaluation) 2: When felt easy to get used to 1: When felt somewhat easy to get used to 0: When felt difficult to get used to <Three-level evaluation based on total score> A: Total score of 14-20 points B: Total score of 7-13 points C: Total score of 6 points or less

[0045] (2) Shine and non-greasy hair Ten panelists (5 men, 5 women, aged 25-45) took an appropriate amount of the hair oil composition in their palms, applied it evenly to the hair strands that had undergone the above pretreatment, dried them with a hairdryer, and evaluated the shine and non-greasy hair according to the following absolute evaluation criteria. The total score from each panelist was calculated, and based on that total score, the hair was evaluated in three stages, "A", "B", and "C", according to the following evaluation criteria. An evaluation of "A" or "B" was considered a pass.

[0046] (Shine) <Absolute Evaluation Criteria> (Score): (Evaluation) 2: When you feel that the hair has been given shine 1: When you feel that the hair has been given a slight shine 0: When you feel that the hair has not been given shine <Three-level evaluation based on the total score> A: Total score of 14-20 points B: Total score of 7-13 points C: Total score of 6 points or less

[0047] (Lack of stickiness) <Absolute evaluation criteria> (Score): (Evaluation) 2: When hair feels not sticky 1: When hair feels slightly sticky 0: When hair feels sticky <Three-level evaluation based on total score> A: Total score of 14-20 points B: Total score of 7-13 points C: Total score of 6 points or less

[0048] (3) Long-lasting shine and non-greasy texture. An appropriate amount of the hair oil composition was taken into the palm of the hand and applied to the hair strands that had undergone the above pretreatment, spreading it evenly, and then dried with a hairdryer. After storing these hair strands at 25°C and 80% RH for 12 hours, 10 panelists (5 men and 5 women, aged 25-45) evaluated the shine and non-greasy texture of the hair according to the following absolute evaluation criteria. The total score from each panelist was calculated, and based on that total score, the hair was evaluated in three stages: "A", "B", and "C", according to the following evaluation criteria. An evaluation of "A" or "B" was considered a pass.

[0049] (Longevity of Shine) <Absolute Evaluation Criteria> (Score): (Evaluation) 2: When you feel your hair is shiny 1: When you feel your hair is slightly shiny 0: When you feel your hair is not shiny <Three-level evaluation based on total score> A: Total score of 14-20 points B: Total score of 7-13 points C: Total score of 6 points or less

[0050] (Duration of non-greasy feeling) <Absolute evaluation criteria> (Score): (Evaluation) 2: When hair feels non-greasy 1: When hair feels slightly greasy 0: When hair feels greasy <Three-level evaluation based on total score> A: Total score of 14-20 points B: Total score of 7-13 points C: Total score of 6 points or less

[0051]

[0052]

[0053] The hair oil compositions of Examples 1 to 6 exhibited good applicability, hair shine and non-greasy properties, and the longevity of shine and non-greasy properties.

[0054] In contrast, Comparative Examples 1 to 6 did not achieve sufficient performance. Comparative Example 1 did not contain component (A), resulting in insufficient hair shine and the persistence of shine. Comparative Example 2 did not contain component (B), resulting in insufficient non-greasy hair and the persistence of non-greasy hair. Comparative Example 3 did not contain component (C), resulting in insufficient ease of application, non-greasy hair, and the persistence of non-greasy hair. Comparative Example 4 did not contain component (D), resulting in insufficient ease of application, hair shine, and the persistence of shine. Comparative Example 5 had too small a mass ratio of component (A) to component (B), resulting in insufficient shine persistence. In Comparative Example 6, the mass ratio of component (A) to component (B) ((A) / (B)) was too large, resulting in insufficient non-greasy hair and poor retention of that non-greasy feeling.

[0055] Next, an example of a formulation of the hair oil composition of the present invention is shown. This example of a hair oil composition was also evaluated using the five criteria described above, and it exhibited excellent effects in terms of ease of application, shine and non-greasy feel of the hair, and the persistence of shine and non-greasy feel. The symbols of the components used in Tables 1 and 2 are indicated in parentheses.

[0056] [Example Formulation: Hair Oil] (Ingredients) (Mass %) 1. Isoparaffin (Kinematic viscosity: 6.9 mm) ２ / s, 25℃) (C4) 40.0 2. Isoparaffin with an average of 24 carbon atoms (B2) 14.0 3. Isoparaffin with an average of 20 carbon atoms (B1) 10.0 4. Isoparaffin with an average of 96 carbon atoms (A2) 8.0 5. Olive oil (D1) 8.0 6. Isopropyl myristate (D2) 8.0 7. Dimethicone (kinematic viscosity: 20 mm) ２ / s, 25℃) (C) 6.0 8. Dimethicone (kinematic viscosity: 1000 mm) ２( / s, 25℃) 4.0 9. Antioxidant (appropriate amount) 10. Fragrance (appropriate amount) Total 100.0

Claims

1. (A) 0.5% to 20% by mass of isoparaffin with an average carbon number of 50 to 250, (B) 10% to 50% by mass of isoparaffin with an average carbon number of 20 to 24, (C) kinematic viscosity at 25°C is 20 mm ２ A hair oil composition comprising (D) 20% by mass or more and 60% by mass or less of a volatile oil agent with a concentration of 0.5% by mass or less and (B) 5% by mass or more and 40% by mass or less of an ester oil that is liquid at 25°C, wherein the mass ratio of component (A) to component (B) ((A) / (B)) is 1 / 20 or more and 3 / 2 or less.

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