Oil-based solid cosmetics

Abstract

To provide an oily solid cosmetic which has setting power and a matte feel when applied to the hair, causes no surface cracks, has excellent high-temperature stability and excellent removability and causes no stickiness on the hair or skin.SOLUTION: There is provided an oily solid cosmetic which has setting power and a matte feel when applied to the hair, causes no surface cracks, has excellent high-temperature stability and excellent removability and causes no stickiness on the hair or skin, wherein the oily solid cosmetic comprises (A) one or more selected from glyceryl tristearate, glyceryl trimyristate or glyceryl tripalmitate, (B) one or more selected from octyldodecyl myristate, isocetyl myristate or caprylyl laurate, (C) a polyglycerol fatty acid ester and (D) one or more selected from waxes having a melting point of 60°C or more or a hydrogenated vegetable oil in which the content of the component (A) is 6 to 25 mass% and the content of the component (B) is 15 to 45 mass%.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oily solid cosmetic preparation. [Background technology]

[0002] In recent years, with the popularity of hair coloring and perm agents, hair has become more frequently damaged, leading to a growing demand for hair damage repair. Damaged hair can be significantly improved by using cosmetics to replenish oil and provide smoothness and flexibility. In particular, oil-based cosmetics such as hair oil and hair balm are excellent at repairing damaged hair because they can contain a large amount of oil.

[0003] In recent years, many consumers have been suffering from dry skin, and the demand for moisturizing skin has been increasing. Dry skin can be significantly improved by using cosmetics to replenish oils in the skin, prevent moisture loss, and protect it. In particular, oil-based cosmetics such as body oils, body balms, and lip balms are excellent at moisturizing the skin because they can contain a large amount of oil.

[0004] Furthermore, oil-based cosmetics are available in various forms, such as solid, paste, and liquid, and solid cosmetics are attracting attention as hair and skin cosmetics because they are convenient to carry and do not leak from containers.

[0005] In terms of feel when used on hair and skin, a non-sticky, refreshing feel is preferred, and in addition, in light of recent hairstyle trends, when used on hair, the setting power and matte finish are highly preferred.

[0006] However, in order to achieve a non-sticky and refreshing feel when used, it is necessary to incorporate a large amount of liquid oil. As a result, when stored under high temperature conditions, there are problems in which the liquid oil appears as oil droplets on the surface of the oil-based solid cosmetic, and when the oil-based solid cosmetic is filled into a jar and solidifies during the cooling process, there are cases in which cracks occur on the surface of the oil-based solid cosmetic due to shrinkage.

[0007] In order to solve the above problems, Patent Document 1 discloses an oil-based solid cosmetic composition that contains one or more selected from ester oils that are liquid at 25°C, polyglycerol fatty acid esters, waxes with a melting point of 60°C or higher, and hydrogenated vegetable oils, and that is free from surface cracks, has excellent high-temperature stability, is easy to remove, and does not leave sticky hair or skin. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent Publication No. 2021-130632 Summary of the Invention [Problem to be solved by the invention]

[0009] However, the oily solid cosmetic composition of Patent Document 1 does not currently provide the setting power and matte finish that have been desired in recent years when applied to hair.

[0010] As a result of intensive research into how to solve the above-mentioned problems, the present inventors have found that an oily solid cosmetic composition containing (A) one or more selected from glyceryl tristearate, glyceryl trimyristate, and glyceryl tripalmitate, (B) one or more selected from octyldodecyl myristate, isocetyl myristate, and caprylyl laurate, (C) a polyglycerol fatty acid ester, and (D) one or more selected from waxes or hydrogenated vegetable oils having a melting point of 60°C or higher, wherein the content of component (A) is 6 to 25% by mass and the content of component (B) is 15 to 45% by mass, can solve the above-mentioned problems, and have thus completed the present invention. [Effects of the Invention]

[0011] The present invention can provide an oily solid cosmetic that has setting power and a matte finish when applied to hair, is free from surface cracks, has excellent high-temperature stability and ease of removal, and is free from stickiness on hair and skin. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described in detail below. Note that the units indicating the contents are all % by mass unless otherwise specified.

[0013] In the present invention, the term "setting power" refers to the ease with which a hairstyle with movement can be created when an oily solid cosmetic is applied to hair.

[0014] In the present invention, the term "matt feeling" refers to the lack of shine of hair when an oily solid cosmetic is applied to the hair.

[0015] In the present invention, "cracking" refers to the appearance of cracks or gaps on the surface due to shrinkage of the oily solid cosmetic when the oily solid cosmetic is filled into a container and cooled to solidify.

[0016] In the present invention, "high-temperature stability" refers to the state in which no oil droplets are formed on the surface of an oil-based solid cosmetic when the oil-based solid cosmetic is filled into a container, cooled, and solidified, and then stored at 50°C.

[0017] In the present invention, "ease of removal" refers to an oily solid cosmetic that is neither too soft nor too hard and can be removed smoothly when scooped up with fingers.

[0018] The oil-based solid cosmetic preparation according to the present invention contains (A) one or more selected from glyceryl tristearate, glyceryl trimyristate, and glyceryl tripalmitate from the viewpoints of strong setting power, matte finish, absence of surface cracking, and high-temperature stability.

[0019] The content of the component (A) used in the present invention is 6 to 25%, preferably 7 to 20%, and more preferably 8 to 15%. If the component (A) is less than 6%, the setting strength, matte finish, lack of surface cracking, and high-temperature stability will be impaired. If the component (A) is more than 25%, the lack of surface cracking, high-temperature stability, and ease of removal will be impaired.

[0020] The oily solid cosmetic according to the present invention contains (B) one or more selected from octyldodecyl myristate, isocetyl myristate, and caprylyl laurate, from the viewpoints of preventing surface cracking and high-temperature stability.

[0021] The content of the component (B) used in the present invention is 15 to 45%, preferably 25 to 35%. If the content of the component (B) is less than 15% or more than 45%, the absence of surface cracks and high-temperature stability will be impaired.

[0022] The oily solid cosmetic according to the present invention contains (C) a polyglycerol fatty acid ester from the viewpoints of preventing surface cracking and achieving high temperature stability.

[0023] The polyglycerol fatty acid ester of component (C) used in the present invention is not particularly limited, but examples thereof include polyglyceryl-10 laurate, polyglyceryl-6 myristate, polyglyceryl-10 myristate, polyglyceryl-2 stearate, polyglyceryl-4 stearate, polyglyceryl-6 stearate, polyglyceryl-10 stearate, polyglyceryl-6 tristearate, polyglyceryl-10 tristearate, polyglyceryl-6 pentastearate, polyglyceryl-10 pentastearate, polyglyceryl-10 decastearate, polyglyceryl-10 isostearate, polyglyceryl-10 pentaisostearate, polyglyceryl-10 oleate, polyglyceryl-10 pentaoleate, and polyglyceryl-10 dodecabehenate, and the like, and the polyglyceryl-10 dodecabehenate may be contained in one or more types. Of these, polyglyceryl-10 pentastearate, polyglyceryl-10 tristearate, and polyglyceryl-6 stearate are preferred, with polyglyceryl-10 pentastearate being more preferred, from the viewpoint of the absence of surface cracks and high-temperature stability.

[0024] The content of the component (C) used in the present invention is preferably 0.1 to 8%, more preferably 0.2 to 4%, and even more preferably 0.5 to 2%. If the component (C) is less than 0.1%, the surface cracking and high-temperature stability may be impaired. If the component (A) is more than 8%, the ease of removal may be impaired.

[0025] The oily solid cosmetic according to the present invention contains (D) one or more waxes or hydrogenated vegetable oils having a melting point of 60°C or higher, from the viewpoints of setting power, matte finish, and high-temperature stability.

[0026] The waxes having a melting point of 60°C or higher used in the present invention as component (D) are not particularly limited, and examples thereof include sunflower seed wax, candelilla wax, rice bran wax, carnauba wax, snow wax, etc., and one or more of these may be contained. Of these, sunflower seed wax is preferred from the viewpoint of high-temperature stability.

[0027] Commercially available waxes having a melting point of 60°C or higher as the component (D) used in the present invention include refined sunflower wax (manufactured by Yokoseki Yushi Kogyo Co., Ltd., melting point 76°C), deodorized refined candelilla wax (manufactured by Cerarica NODA Co., Ltd., melting point 68-72°C), and TOWAX-4F3 (manufactured by Toa Kasei Co., Ltd., melting point 68-73°C).

[0028] The hydrogenated vegetable oil having a melting point of 60°C or higher as component (D) used in the present invention is not particularly limited, and examples thereof include hydrogenated castor oil, hydrogenated rapeseed oil, hydrogenated soybean oil, hydrogenated jojoba oil, etc., and one or more of these may be contained. Of these, hydrogenated castor oil is preferred from the viewpoint of ease of removal.

[0029] Examples of commercially available hydrogenated vegetable oils having a melting point of 60°C or higher as component (D) used in the present invention include hydrogenated castor oil A (manufactured by Ito Oil Mills, melting point 84 to 87°C).

[0030] The content of the component (D) used in the present invention is preferably 1 to 12%, more preferably 1.5 to 8%, and even more preferably 2 to 6%. If the component (D) is less than 1%, the setting strength, matte finish, and high-temperature stability may be impaired. If the component (D) is more than 12%, the ease of removal may be impaired.

[0031] In addition to the essential ingredients, the oily solid cosmetic preparation of the present invention may contain at least one selected from various ingredients used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., such as other surfactants, oily ingredients other than the above-mentioned components (A), (B), (C), and (D), moisturizers, thickeners, chelating agents, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, stabilizers, antioxidants, plant extracts, herbal extracts, vitamins, preservatives, colorants, pigments, powders, pH adjusters, ultraviolet absorbers, fragrances, etc. However, the ingredients are not limited to these examples.

[0032] The needle penetration hardness of the oily solid cosmetic preparation of the present invention is not particularly limited, but is preferably 10 to 80 g. If the needle penetration hardness is less than 10 g, the preparation may be too soft and may not be easily removable. If the needle penetration hardness is more than 80 g, the preparation may be too hard and may not be easily removable.

[0033] The penetration hardness in the present invention is determined by dissolving an oily solid cosmetic product prepared by a conventional method, filling 38 g into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.), leaving it to stand at 20°C for 24 hours, and then using a creep meter (model: Leoner RE-3305S, manufactured by Yamaden Co., Ltd.), a 2 mm diameter jig is inserted 32 mm at a speed of 1 mm / sec, and the average resistance load measured at 10 mm, 20 mm, and 30 mm is measured.

[0034] The oily solid cosmetic of the present invention can be used as a leave-on hair cosmetic and a leave-on skin cosmetic.

[0035] The container in which the oily solid cosmetic of the present invention is filled is not particularly limited, but it is preferable to fill it in a jar-type container.

[0036] The material of the container into which the oily solid cosmetic of the present invention is filled is not particularly limited, but aluminum containers, glass containers, PP containers, PE containers, PET containers, etc. are preferred.

[0037] The oily solid cosmetic composition of the present invention can be used by scooping it directly from the filled container with fingers and then applying it to hair or skin as is or after spreading it on the hands. [Example]

[0038] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0039] In the evaluation tests shown in this specification, the components contained in the oily solid cosmetic preparations and the results of various experiments carried out while varying their contents are shown below. Note that the units showing the contents of each component in the oily solid cosmetic preparations are all % by mass, and these were prepared using conventional methods.

[0040] In the evaluation tests shown in this specification, the following were evaluated: "strength of setting power," "matt feeling," "absence of surface cracking," "high temperature stability," "ease of removal," "absence of stickiness on hair," and "absence of stickiness on skin."

[0041] [Setting power] 38 g of the obtained oily solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, 0.3 g was divided into three portions and spread on the hands, and then applied to the hair of a hair test doll ("Cutting Mannequin No. 775N" manufactured by Beaulux Co., Ltd.) to evaluate the ease of creating dynamic hairstyles.

[0042] (Evaluation method) Ten panelists used oil-based solid cosmetics and conducted a sensory evaluation of the "setting power." Each panelist rated the products on a five-point scale: 5 points (very good), 4 points (better), 3 points (good), 2 points (poor), and 1 point (very poor). The average score was calculated and then judged according to the following criteria.

[0043] (Average score criteria) 4.0 points or above: 5 3.5 points or more and less than 4.0 points: 4 3.0 points or more and less than 3.5 points: 3 2.0 points or more and less than 3.0 points: 2 Below 2.0 points: 1 [Matte finish] 38 g of the obtained oily solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, 0.3 g was divided into three portions and spread on the hands, and then applied to the hair of a hair test doll ("Cut Mannequin No. 775N" manufactured by Beaulux Co., Ltd.), and the lack of shine of the hair was subjected to a sensory evaluation.

[0044] (Evaluation method) Ten panelists used oil-based solid cosmetics and conducted a sensory evaluation of the "matt feeling." Each panelist rated the results on a five-point scale: 5 points (very good), 4 points (better), 3 points (good), 2 points (bad), and 1 point (very bad). The average score was calculated and then judged according to the following criteria.

[0045] (Average score criteria) 4.0 points or above: 5 3.5 points or more and less than 4.0 points: 4 3.0 points or more and less than 3.5 points: 3 2.0 points or more and less than 3.0 points: 2 Below 2.0 points: 1

[0046] [Absence of surface cracks] 38 g of the obtained oil-based solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, the appearance was visually observed and evaluated for the presence of cracks on the surface of the oil-based solid cosmetic.

[0047] (Judgment criteria) ○: No cracks △: There are slight cracks ×: There is a large crack

[0048] [High temperature stability] 38 g of the obtained oily solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.), left to stand at 25°C for 24 hours, and then left to stand at 50°C for 1 month, and the presence or absence of oil droplets on the surface was evaluated. An incubator with a refrigerator (model: MIR-554-PJ, manufactured by Panasonic Healthcare Co., Ltd.) was used.

[0049] (Judgment criteria) ○: No oil droplets △: A few oil droplets ×: There are a lot of oil droplets

[0050] [Ease of removal] 38 g of the obtained oil-based solid cosmetic was filled into a glass container (Chamaru 50: manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, a sensory evaluation of the ease of removal was conducted by taking into account the softness, hardness, and smoothness when scooping with the index finger.

[0051] (Evaluation method) Ten panelists used oil-based solid cosmetics and conducted a sensory evaluation of their "ease of removal." Each panelist rated the products on a five-point scale: 5 points (very good), 4 points (better), 3 points (good), 2 points (bad), and 1 point (very bad). The average score was calculated, and then judged according to the following criteria.

[0052] (Average score criteria) 4.0 points or above: 5 3.5 points or more and less than 4.0 points: 4 3.0 points or more and less than 3.5 points: 3 2.0 points or more and less than 3.0 points: 2 Below 2.0 points: 1

[0053] [Non-sticky hair] 38 g of the obtained oily solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, 0.3 g was divided into three portions and spread on the hands, and then applied to the hair of a hair test doll ("Cutting Mannequin No. 775N" manufactured by Beaulux Co., Ltd.), and the non-stickiness of the hair was evaluated by sensory evaluation. (Evaluation method) Ten panelists used oily solid cosmetics and conducted a sensory evaluation of "non-stickiness of hair." Each panelist rated the products on a five-point scale: 5 points (very good), 4 points (better), 3 points (good), 2 points (bad), and 1 point (very bad). The average score was calculated, and the results were judged according to the following criteria.

[0054] (Average score criteria) 4.0 points or above: 5 3.5 points or more and less than 4.0 points: 4 3.0 points or more and less than 3.5 points: 3 2.0 points or more and less than 3.0 points: 2 Below 2.0 points: 1

[0055] [Non-sticky skin] 38 g of the obtained oily solid cosmetic was filled into a glass container (Chamaru 50, manufactured by Asai Glass Co., Ltd.) and left to stand at 25°C for 24 hours. After that, 0.05 g was taken and spread evenly on both hands, and a sensory evaluation was performed to determine whether the cosmetic felt sticky on the skin.

[0056] (Evaluation method) Ten panelists used oil-based solid cosmetics and conducted a sensory evaluation of "non-stickiness on the skin." Each panelist rated the product on a five-point scale: 5 points (very good), 4 points (better), 3 points (good), 2 points (bad), and 1 point (very bad). The average score was calculated and then judged according to the following criteria.

[0057] (Average score criteria) 4.0 points or above: 5 3.5 points or more and less than 4.0 points: 4 3.0 points or more and less than 3.5 points: 3 2.0 points or more and less than 3.0 points: 2 Below 2.0 points: 1

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] [Table 4]

[0062] Examples 1 to 36 shown in Tables 1, 2, 3 and 4 showed good results in terms of "setting power," "matt finish," "absence of surface cracking," "high temperature stability," "ease of removal," "absence of stickiness on hair," and "absence of stickiness on skin."

[0063] Examples 37, 38 and 39 of oily solid cosmetics are described below.

[0064] The oily solid cosmetic preparations obtained in the following Examples 37, 38, and 39 achieved favorable results in terms of "setting power," "matt feeling," "absence of surface cracking," "high-temperature stability," "ease of removal," "absence of stickiness on hair," and "absence of stickiness on skin."

[0065] Example 37 Element Content (%) (A) Glyceryl tristearate 10.00 (B) Octyldodecyl myristate 30.57 (C) Polyglyceryl-10 Pentastearate 0.80 (D) Sunflower Seed Wax 3.80 (D) Candelilla wax 0.70 (D) Rice bran wax 0.16 Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 23.98 Caprylic / Capric Triglyceride 19.10 Methylheptyl palmitate 10.00 Tocopherol 0.02 Paraffin 0.14 γ-docosalactone 0.01 Tremella fuciformis extract 0.01 Phenoxyethanol 0.01 BG 0.01 Peach kernel oil 0.10 Peach Fruit Extract 0.01 Peach juice 0.01 Peach Leaf Extract 0.01 Fragrance 0.55 water 0.01 Total 100.00 Penetration hardness: 36.2g

[0066] Example 38 Element Content (%) (A) Glyceryl tristearate 25.00 (B) Octyldodecyl myristate 29.55 (C) Polyglyceryl-10 Pentastearate 0.80 (D) Sunflower Seed Wax 3.90 (D) Candelilla wax 1.67 (D) Rice bran wax 0.38 Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 6.50 Caprylic / Capric Triglyceride 19.00 Methylheptyl palmitate 10.00 Tocopherol 0.10 Paraffin 0.34 Orange peel oil 2.50 Olive oil 0.01 γ-docosalactone 0.01 BG 0.01 Shea butter 0.01 Sage Leaf Extract 0.01 Fragrance 0.20 water 0.01 Total 100.00 Penetration hardness: 104.8g

[0067] Example 39 Element Content (%) (A) Glyceryl tristearate 10.00 (B) Caprylyl Laurate 30.33 (C) Polyglyceryl-10 Pentastearate 0.70 (D) Sunflower Seed Wax 3.80 (D) Candelilla wax 0.70 (D) Rice bran wax 0.16 Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 23.98 Caprylic / Capric Triglyceride 19.00 Methylheptyl palmitate 10.00 Tocopherol 0.10 Paraffin 0.14 β-carotene 0.01 BG 0.01 (C12-14) Palace-3 0.01 Shea butter 0.01 Arnica flower extract 0.01 Dill Seed Extract 0.01 Cucumber Fruit Extract 0.01 Olive oil 0.10 English: English: English: English: English: English: English: English: English: English: English: Ivy leaf / stem extract 0.01 Sambucus Nigra Flower Extract 0.01 Mallow flower extract 0.01 Parietaria extract 0.01 Corn oil 0.01 Peppermint oil 0.01 Lemon fruit oil 0.01 Horse chestnut extract 0.01 Licorice leaf extract 0.01 Cowberry juice 0.01 Sage Leaf Extract 0.01 Fragrance 0.80 water 0.01 Total 100.00 Penetration hardness: 27.5g [Industrial Applicability]

[0068] According to the present invention, an oily solid cosmetic composition was obtained which has setting power and a matte finish when applied to hair, is free from surface cracks, has excellent high-temperature stability and ease of removal, and is not sticky on hair or skin.

Claims

1. (A) one or more selected from glyceryl tristearate, glyceryl trimyristate, and glyceryl tripalmitate (B) one or more selected from octyldodecyl myristate, isocetyl myristate, and caprylyl laurate (C) Polyglycerol fatty acid ester (D) One or more waxes or hydrogenated vegetable oils having a melting point of 60°C or higher wherein the content of the component (A) is 6 to 25% by mass and the content of the component (B) is 15 to 45% by mass.

2. 2. The oily solid cosmetic preparation according to claim 1, wherein the component (C) is one or more selected from polyglyceryl-10 pentastearate, polyglyceryl-10 tristearate, and polyglyceryl-6 stearate.

3. 3. The oily solid cosmetic according to claim 1, wherein the content of component (C) is 0.1 to 8% by mass.

4. 2. The oily solid cosmetic according to claim 1, wherein the component (D) is one or more selected from sunflower seed wax, candelilla wax, and hydrogenated castor oil.

5. 5. The oily solid cosmetic according to claim 1, wherein the content of the component (D) is 1 to 12% by mass.

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