Hair cosmetic

Abstract

To provide a hair cosmetic that delivers a favorable melting feel in the palm, offers natural hair cohesion and gloss, and ensures easy rinsing and high stability at 50°C.SOLUTION: A hair cosmetic contains: (A) wax; (B) ester oil that is liquid at 25°C; (C) PEG-20 glyceryl triisostearate; and (D) polyoxyethylene alkyl ether. Therein: a content of the component (A) is 1-12 mass%; a content of the component (B) is 20-70 mass%; a content of the component (C) is 0.5-7 mass%; and a content of the component (D) is 1-10 mass%. This achieves a hair cosmetic that delivers a favorable melting feel in a palm, offers natural hair cohesion and gloss, and ensures easy rinsing and high stability at 50°C.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a hair cosmetic, and more particularly to a hair cosmetic which melts smoothly in the palm of the hand, imparts natural manageability and shine, and has good wash-off properties and stability at 50°C. [Background technology]

[0002] In recent years, consumers have been suffering from various hair-related problems, such as poor manageability and lack of shine, due to damage to hair caused by coloring and permanent treatments. To solve these problems, consumers use various hair cosmetics such as hair balms, hair oils, hair creams, and hair milks. Among these hair cosmetics, hair balms are in demand among consumers because they give natural manageability and shine without being too stiff or thick.

[0003] Conventionally, hair balms contain a large amount of oily ingredients such as liquid oils such as ester oils, silicone oils, and vegetable oils, paste oils such as petrolatum and fats, and solid oils such as waxes. When the amount of these oily ingredients is increased, it can give hair manageability and shine. However, when the amount of these oily ingredients is increased, there are problems such as poor washing off of hair cosmetics that adhere to the hands, and stability problems such as oil droplets on the surface of the hair balm and separation.

[0004] Regarding the stability mentioned above, if hair balm is left in a hot place such as outdoors or inside a car during the summer, oil droplets are likely to form on the surface of the hair balm and it is likely to separate, so stability at high temperatures, particularly at 40 to 50°C, is required.

[0005] In response to these issues, Patent Document 1 discloses that a hair balm containing a wax that is solid at 25°C, a volatile oil that volatilizes at 25°C, a liquid oil that is liquid at 25°C, water, a nonionic surfactant that is liquid at 25°C, and a dimer dilinoleic acid ester can improve the ability to form hair bundles, the stiffness of hair bundles, the feeling of melting in the palm of the hand, wash-off, and stability at 45°C. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2019-131529 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in Patent Document 1, although the melting feeling in the palm, washing off, and stability at 45°C are improved, the hair bundles are formed, and furthermore, the hair bundles are stiff and prickly, making it difficult to create a hairstyle that is not too stiff and naturally manageable. Also, no consideration is given to the glossiness. [Means for solving the problem]

[0008] As a result of intensive research, the present inventors have found that by providing a hair cosmetic composition comprising (A) waxes, (B) an ester oil that is liquid at 25°C, (C) PEG-20 glyceryl triisostearate, and (D) a polyoxyethylene alkyl ether, in which the content of component (A) is 1 to 12% by mass, the content of component (B) is 20 to 70% by mass, the content of component (C) is 0.5 to 7% by mass, and the content of component (D) is 1 to 10% by mass, it is possible to obtain a hair cosmetic composition that melts well in the palm of the hand, imparts natural manageability and shine to hair, and has good washability and stability at 50°C, and have thus completed the present invention. Effect of the Invention

[0009] The present invention provides a hair cosmetic which melts smoothly in the palm of the hand, imparts natural manageability and shine to hair, and has good washability and stability at 50°C. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. Note that the units showing the contents are all mass % unless otherwise specified.

[0011] In the present invention, the "feeling of melting in the palm of the hand" refers to the state in which the hair cosmetic composition melts when spread on the palm of the hand.

[0012] Regarding the aforementioned "meltability in the palm of the hand," hair balms generally contain a large amount of oily ingredients. Consumers spread the hair balm on their palms, warm it with body heat, and then apply it to their hair after the oily ingredients have spread and soaked into the palms. Therefore, the "meltability in the palm of the hand" is an important factor in using hair balms appropriately.

[0013] In the present invention, "wash-off" refers to the ease with which the hair cosmetic product can be washed off when the hair cosmetic product remaining on the palm of the hand is taken in the hand, spread on the palm, applied to the hair, and then washed off with water at 40°C.

[0014] The present invention contains (A) waxes from the viewpoints of natural cohesion and stability at 50°C.

[0015] The component (A) used in the present invention is not particularly limited, but examples thereof include candelilla wax, carnauba wax, sunflower seed wax, white beeswax, rice bran wax, and the like, and one or more of these may be contained.

[0016] Of the component (A) used in the present invention, from the viewpoint of improving natural hold, candelilla wax, carnauba wax, and sunflower seed wax are preferred, and of these, candelilla wax is more preferred.

[0017] The content of the (A) component used in the present invention is 1 to 12%, preferably 2 to 10%, and more preferably 3 to 8%. If the (A) component is less than 1%, natural hold is not obtained and stability at 50° C. is poor. If the (A) component is more than 12%, natural hold is not obtained and melting feeling in the palm and wash-off are poor.

[0018] The present invention contains (B) an ester oil that is liquid at 25°C from the viewpoint of the feeling of melting on the palm and the glossy feeling.

[0019] The component (B) used in the present invention is not particularly limited, and examples thereof include tri(caprylic / capric acid)glyceryl (molecular weight 471 to 555), octyldodecyl myristate (molecular weight 509), triglyceryl 2-ethylhexanoate (molecular weight 471), diisostearyl malate (molecular weight 639), oleyl oleate (molecular weight 533), decyl oleate (molecular weight 423), octyldodecyl oleate (molecular weight 563), 2-ethylhexyl hydroxystearate (molecular weight 413), isopropyl myristate (molecular weight 270), methylheptyl palmitate (molecular weight 271), and the like. 369), 2-ethylhexyl palmitate (molecular weight 369), di-2-ethylhexyl succinate (molecular weight 343), cetyl ethylhexanoate (molecular weight 369), isopropyl isostearate (molecular weight 327), cetyl isooctanoate (molecular weight 369), isononyl isononanoate (molecular weight 284), isodecyl isononanoate (molecular weight 299), isotridecyl isononanoate (molecular weight 341), hexyl laurate (molecular weight 284), octyldodecyl lactate (molecular weight 371), isostearyl pivalate (molecular weight 355), and the like can be included, and one or more of these can be contained.

[0020] The molecular weight of the component (B) used in the present invention is preferably 400 to 700 from the viewpoint of improving gloss.

[0021] The content of the (B) component used in the present invention is 20 to 70%, preferably 30 to 64%, and more preferably 38 to 56%. If the (B) component is less than 20%, the feeling of melting in the palm of the hand is poor and a glossy feeling is not obtained. If the (B) component is more than 70%, the wash-off and stability at 50°C are poor.

[0022] The present invention contains (C) PEG-20 glyceryl triisostearate from the viewpoints of gloss and washability.

[0023] Examples of the component (C) used in the present invention include NIKKOL TGI-20 (manufactured by Nikko Chemicals Co., Ltd.), M Fine Oil ISG-20T (manufactured by Miyoshi Oil Co., Ltd.), UNIOX GT-20IS (manufactured by NOF Corporation), and CITHROL 10GTIS (manufactured by Croda Japan Co., Ltd.).

[0024] The content of the (C) component used in the present invention is 0.5 to 7%, preferably 1 to 7%, and more preferably 1.5 to 7%. If the (C) component is less than 0.5%, the glossy feeling is not obtained and the wash-off is poor. If the (C) component is more than 7%, the stability at 50°C is poor.

[0025] From the viewpoint of stability at 50°C, the present invention contains (D) a polyoxyethylene alkyl ether.

[0026] Examples of the component (D) used in the present invention include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene behenyl ether, polyoxyethylene alkyl (C12-14) ether, polyoxyethylene oleyl ether, polyoxyethylene isostearyl ether, and the like, and one or more of these may be contained.

[0027] The alkyl group of the component (D) used in the present invention preferably has 12 to 22 carbon atoms.

[0028] The average number of moles (EO) of polyoxyethylene added in the component (D) used in the present invention is preferably 6 to 15, and more preferably 6 to 10, from the viewpoint of improving the melting sensation in the palm of the hand.

[0029] The component (D) used in the present invention is preferably polyoxyethylene cetyl ether (6 E.O.), polyoxyethylene cetyl ether (7 E.O.), polyoxyethylene cetyl ether (10 E.O.), polyoxyethylene lauryl ether (9 E.O.), polyoxyethylene stearyl ether (7 E.O.), polyoxyethylene behenyl ether (10 E.O.), polyoxyethylene cetyl ether (15 E.O.), or polyoxyethylene cetyl ether (20 E.O.), and among these, polyoxyethylene cetyl ether (6 E.O.), polyoxyethylene cetyl ether (7 E.O.), polyoxyethylene cetyl ether (10 E.O.), polyoxyethylene lauryl ether (9 E.O.), polyoxyethylene stearyl ether (7 E.O.), or polyoxyethylene behenyl ether (10 E.O.) are more preferred.

[0030] The content of the (D) component used in the present invention is 1 to 10%, preferably 1 to 8%, and more preferably 1 to 6%. If the (D) component is less than 1%, the stability at 50° C. is poor. If the (D) component is more than 10%, the melting sensation in the palm of the hand is poor.

[0031] The total content of the oily components used in the present invention is preferably 42 to 92%, more preferably 52 to 86%, and even more preferably 60 to 78%.

[0032] The present invention may contain water.

[0033] The content of water used in the present invention is preferably 7 to 58%, more preferably 13 to 48%, and further preferably 21 to 40%.

[0034] In addition to the essential components, the hair cosmetic of the present invention may contain at least one selected from various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., such as oily components other than the components (A) and (B), polymers, moisturizing agents, surfactants other than the components (C) and (D), chelating agents, protein derivatives, hydrolyzed proteins, stabilizers, antioxidants, plant extracts, vitamins, preservatives, colorants, pigments, powders, ultraviolet absorbers, fragrances, etc., within the range that does not impair the effects, however, the components are not limited to these examples.

[0035] The hardness of the hair cosmetic composition of the present invention at 20° C. is preferably from 5 to 500 g.

[0036] The hardness of the hair cosmetic of the present invention at 20°C was measured by filling 120 g of the hair cosmetic obtained by conventional preparation into a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.), leaving it to stand at 20°C for one day to adjust the temperature, and then measuring the peak stress value (unit: g) when a 15 mm diameter adapter was inserted 30 mm at a speed of 60 mm / min using a creep meter (model: RE3305S, manufactured by Yamaden Co., Ltd.).

[0037] The pH of the hair cosmetic composition of the present invention containing water at 20°C is preferably 4 to 10.

[0038] The pH of the hair cosmetic composition of the present invention at 20°C was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after the hair cosmetic composition obtained by a conventional method was left to stand at 20°C for one day and the temperature was adjusted.

[0039] The hair cosmetic composition of the present invention can be prepared and used in the form of a solid, cream or paste.

[0040] The hair cosmetic composition of the present invention can be filled into a container such as a jar container, a tube container, or a container with a pump-type dispenser and then used. EXAMPLES

[0041] The present invention will be described in more detail below by way of examples, but these are not intended to limit the present invention in any way.

[0042] In the evaluation tests shown in the present specification, the components and their contents in the hair cosmetics were varied. The units showing the contents of each component are all mass %, and these were prepared by conventional methods.

[0043] In the evaluation test methods shown in this specification, "meltability in the palm of the hand," "natural hold," "luster," "wash-off," and "stability at 50°C" were evaluated by the following methods.

[0044] "Melts in the palm of your hand" A panel of 15 experts evaluated the melting sensation in the palm of the hand of the hair cosmetics obtained in the Examples and Comparative Examples. The evaluation test involved placing 2 g of the hair cosmetics obtained in the Examples and Comparative Examples, which had been adjusted to 20°C, in the palm of the hand, and sensorily evaluating the melting sensation of the hair cosmetics in the palm when spread on the palm. <Evaluation criteria> 5: More than 13 out of 15 people felt that the powder melted well in the palm of their hand. 4: Between 10 and 12 out of 15 people felt that the cream melted well in the palm of their hand. 3: Between 7 and 9 out of 15 people felt that the cream melted well in the palm of their hand. 2: Between 4 and 6 out of 15 people felt that the cream melted well in the palm of their hand. 1: Less than 3 out of 15 people felt that the powder melted well in the palm of their hand.

[0045] "Natural unity" A panel of 15 experts conducted an evaluation test of the natural manageability of the hair cosmetics obtained in the Examples and Comparative Examples. The evaluation test consisted of applying 2 g of the hair cosmetics obtained in the Examples and Comparative Examples, which had been adjusted to 20°C, evenly to the entire hair under conditions of room temperature of 20°C and humidity of 60%, and evaluating the natural manageability of the hair by sensory evaluation. <Evaluation criteria> 5: More than 13 out of 15 people felt that there was a natural cohesion. 4: I felt that there was a natural unity between 10 and 12 people out of 15. 3: I felt that between 7 and 9 out of 15 people had a natural sense of unity. 2: I felt that a group of between 4 and 6 out of 15 people had a natural sense of unity. 1:30 out of 15 people felt that there was natural cohesion.

[0046] "Shiny feel" A panel of 15 experts evaluated the glossiness of the hair cosmetics obtained in the Examples and Comparative Examples. The evaluation test consisted of applying 2 g of the hair cosmetics obtained in the Examples and Comparative Examples, which had been adjusted to 20°C, evenly to the entire hair under conditions of room temperature of 20°C and humidity of 60%, and evaluating the glossiness by sensory evaluation. <Evaluation criteria> 5: More than 13 out of 15 people felt that it had a glossy look. 4:10 to 12 out of 15 people felt that the product had a glossy finish. 3: Between 7 and 9 out of 15 people felt that the product had a glossy finish. 2: Between 4 and 6 out of 15 people felt that the product had a glossy finish. 1: Fewer than 3 out of 15 people felt that it had a glossy finish.

[0047] "Wash off" A panel of 15 experts conducted an evaluation test of the wash-off of the hair cosmetics obtained in the Examples and Comparative Examples. The evaluation test consisted of applying 2 g of the hair cosmetics obtained in the Examples and Comparative Examples, which had been adjusted to 20°C, evenly to the entire hair under conditions of room temperature of 20°C and humidity of 60%, and then sensuously evaluating the wash-off when the hair cosmetics remaining on the palms were washed off with water at 40°C. <Evaluation criteria> 5: More than 13 out of 15 people felt that it washed off easily. 4: Between 10 and 12 out of 15 people felt that it washed off easily. 3: Between 7 and 9 out of 15 people felt that it washed off easily. 2: Between 4 and 6 out of 15 people felt that it washed off easily. 1: Fewer than 3 out of 15 people felt that it washed off easily.

[0048] "Stability at 50℃" The hair cosmetics obtained in the Examples and Comparative Examples were subjected to a stability evaluation test at 50° C. In the evaluation test, 120 g of the hair cosmetics obtained in the Examples and Comparative Examples were placed in a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and stored in a thermostatic chamber at 50° C. for 30 days, and the hair cosmetics removed from the thermostatic chamber were evaluated by visual observation. <Evaluation criteria> ◯: No oil droplets were observed on the surface of the hair cosmetic composition, and no separation was observed. ×: Oil droplets are observed on the surface of the hair cosmetic composition, or separation is observed.

[0049] [Table 1]

[0050] [Table 2]

[0051] [Table 3]

[0052] [Table 4]

[0053] [Table 5]

[0054] [Table 6]

[0055] [Table 7]

[0056] From Examples 1 to 36 shown in Tables 1 to 7, good results were obtained in terms of melting feeling in the palm, natural hold, glossiness, wash-off, and stability at 50°C.

[0057] Hair cosmetic compositions according to Examples 37 and 38 are described below.

[0058] The hair cosmetics obtained in Examples 37 and 38 gave good results in terms of the feel when melting in the palm of the hand, natural manageability, shine, washability, and stability at 50°C.

[0059] <Example 37> Component Content (mass%) (A) Candelilla wax ※1 6.00 (B) Tri(caprylic / capric acid)glyceryl*2 46.00 (C) PEG-20 glyceryl triisostearate *3 2.00 (D) Polyoxyethylene cetyl ether (7E.O.) 2.00 Hydrogenated castor oil dimer dilinoleate 8.00 Polyoxyethylene sorbitan monostearate (20E.O.) 2.00 Self-emulsifying glyceryl monostearate 2.00 Stearic acid 2.00 Phenoxyethanol 0.10 Glycerin Mono 2-Ethylhexyl Ether 0.20 1,3-Butylene glycol 6.00 Methyl parahydroxybenzoate 0.30 Carboxyvinyl polymer 0.20 Potassium hydroxide 0.35 Fragrance 0.30 Purified water 22.55 Total 100.00 Hardness (20℃): 60g pH(20℃):7.7

[0060] <Example 38> Component Content (mass%) (A) Candelilla wax *1 3.00 (B) Tri(caprylic / capric acid)glyceryl*2 38.00 (C) PEG-20 glyceryl triisostearate *3 2.00 (D) Polyoxyethylene cetyl ether (7E.O.) 2.00 Dilinoleic acid di(phytosteryl / isostearyl / cetyl) 16.00 Stearyl / Behenyl) Polyoxyethylene sorbitan monostearate (20E.O.) 2.00 Self-emulsifying glyceryl monostearate 2.00 Stearic acid 2.00 Glyceryl Tristearate 3.00 Phenoxyethanol 0.10 Glycerin Mono 2-Ethylhexyl Ether 0.20 1,3-Butylene glycol 6.00 Methyl parahydroxybenzoate 0.30 Carboxyvinyl polymer 0.20 Potassium hydroxide 0.35 Fragrance 0.30 Purified water 22.55 Total 100.00 Hardness (20℃): 200g pH(20℃):7.9

[0061] The commercially available raw materials of component (A) *1, component (B) *2, and component (C) *3 used in Examples 37 and 38 are shown below. *1: TOWAX4F2 (manufactured by Toa Kasei Co., Ltd.) *2: ODO (manufactured by Nisshin Oillio Group, Ltd.) *3: NIKKOL TGI-20 (manufactured by Nikko Chemicals Co., Ltd.) [Industrial Applicability]

[0062] According to the present invention, it is possible to obtain a hair cosmetic composition which melts well in the palm of the hand, imparts natural manageability and shine to the hair, and has good washability and stability at 50°C.

Claims

1. (A) Waxes (B) Ester oil that is liquid at 25°C (C) PEG-20 glyceryl triisostearate (D) Polyoxyethylene alkyl ether The hair cosmetic composition comprises the above-mentioned components (A) and (B), and the content of the component (B) is 1 to 12% by mass, 20 to 70% by mass, 0.5 to 7% by mass, and 1 to 10% by mass of the above-mentioned component (C).

2. 2. The hair cosmetic composition according to claim 1, wherein the component (A) is one or more waxes selected from the group consisting of candelilla wax, carnauba wax and sunflower seed wax.

3. 2. The hair cosmetic composition according to claim 1, wherein the molecular weight of the component (B) is 400 to 700.

4. 2. The hair cosmetic composition according to claim 1, wherein the component (B) is one or more selected from the group consisting of caprylic / capric triglyceride, octyldodecyl myristate, glyceryl tri-2-ethylhexanoate, and diisostearyl malate.

5. 2. The hair cosmetic composition according to claim 1, wherein the average number of moles (EO) of polyoxyethylene added in the component (D) is 6 to 15.

Images