Hair cosmetics

Abstract

To provide a hair cosmetic having an effect of enhancing conditioning properties and glossiness of hair by using a combination of two or more of specific polyglycerol fatty acid esters.SOLUTION: There is provided a stable hair cosmetic having excellent conditioning properties and glossiness which comprises the following components (a) to (d) as essential components in which the mass ratio of the component (b) to the component (a) is set to 0.1 to 1: (a) a polyglycerol fatty acid ester in which a fatty acid is ester bonded to 50 to 200% of (n) of the average degree of polymerization (n) of polyglycerol, (b) a polyglycerol fatty acid ester in which a fatty acid is ester bonded to 10 to less than 50% of (n) of the average degree of polymerization (n) of polyglycerol, (c) oils and fats and (d) water.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a hair cosmetic having an effect of enhancing the conditioning property and glossiness of hair by using two or more specific polyglycerol fatty acid esters in combination.

Background Art

[0002] Currently, clean beauty is popular in the global personal care market, and a natural concept including plant-based ingredients is becoming preferred. Generally, "clean" means that products and services should consider the health of humans and the environment. This means that it is necessary to consume things considering resources such as water and food, and the ecosystem of animals and plants. That is, it is necessary to make the ingredients constituting cosmetics as environmentally friendly as possible and to consider a waste-free usage method to suppress the environmental load.

[0003] In recent years, especially in the Japanese hair care market, natural-oriented concept products appealing "non-silicone" and "botanical" have been frequently launched on the market, and the concept has been accepted by many consumers. Furthermore, a number of personal care-oriented brands that allow consumers to select products according to their individual hair quality and concerns have been launched. Along with the improvement of the added value of hair care preparations, many products have become expensive. In particular, the demand for preparations such as hair treatments, scalp care for women, and hair colors has been increasing year by year.

[0004] Generally, to enhance the conditioning and moisturizing effects of hair, oil components such as silicone oil and vegetable oil are often used. These components adhere to the hair, improving its conditioning effect. Currently, many rely on hair treatments, hair milks, and hair oils that contain large amounts of oil components. Furthermore, with the rise of the natural concept, consumer psychology has shifted, and more consumers are preferring natural-looking hairstyles with a natural flow and manageability achieved through leave-in treatments such as hair milk and hair oil, rather than hairstyles that are stiffened with styling products.

[0005] Hair oils mainly come in two types: one is formulated with mostly volatile oils, which evaporate when heated by a hair dryer, leaving non-volatile oils such as high-polymer silicones, phenyl-modified silicones, amino-modified silicones, and vegetable oils on the hair surface, providing conditioning and shine; the other is formulated with mostly non-volatile oils, which, when used in small amounts, gives hair a bundled look and hold.

[0006] In recent years, with the rise of the natural concept, hair oils composed of highly biodegradable and renewable plant-based oils have been developed. For example, Patent Document 1 discloses a hair cosmetic containing dodecane or isododecane as a volatile hydrocarbon oil, plant-derived squalane as a non-drying plant oil, and a nonionic surfactant. It states that when this hair cosmetic is applied to the hair, it provides a natural shine and manageability without causing stickiness, and gives a light, smooth feel. However, simply combining volatile hydrocarbon oils, non-drying plant oils, and a nonionic surfactant at a concentration of 1% or less is not sufficient to provide adequate conditioning and gloss. From an environmental perspective, there is a need for a new formulation design that aligns with the natural concept, providing high conditioning properties like high-polymerization silicones and high gloss properties like phenyl-modified silicones without incorporating silicone oils, which have poor biodegradability. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2014-227365 [Overview of the project] [Problems that the invention aims to solve]

[0008] This invention provides a transparent solution that enhances the conditioning and glossiness of hair by using a combination of two or more specific polyglycerin fatty acid esters. Hair oil The objective is to provide this. [Means for solving the problem]

[0009] The inventors of this invention have diligently investigated the above problems and have found that by including (a) to (d) below as essential components and setting the mass ratio of component (b) to component (a), (b) / (a), to 0.1 to 1, a transparent and stable product with excellent conditioning and gloss properties can be produced. Hair oil I obtained it. (a) Polyglycerol fatty acid esters in which fatty acids are ester-bonded to the average degree of polymerization (n) of polyglycerol by 50-200% of (n). (b) Polyglycerol fatty acid esters in which fatty acids are esterified to less than 10-50% of the average degree of polymerization (n) of polyglycerol. (c)Oils and fats (d) water [Effects of the Invention]

[0010] According to the present invention, by having the above-mentioned formulation ingredients and formulation ratio, it is possible to achieve not only moistness and softness after drying the hair, but also improved gloss, and a stable product with a transparent appearance. Hair oil You can obtain this.

[0011] In the present invention, component (a) polyglycerol fatty acid ester is a polyglycerol fatty acid ester in which the fatty acid is ester-bonded to (n) at a rate of 50-200% relative to the average degree of polymerization (n) of polyglycerol, and more preferably, a polyglycerol fatty acid ester in which the fatty acid is ester-bonded to (n) at a rate of 100-200% relative to the average degree of polymerization (n) of polyglycerol. For example, in the case of polyglyceryl-2 tetraisostearate, the average degree of polymerization (n) of polyglycerin is 2, and the number of esterified fatty acids is 4. Therefore, the fatty acids relative to the average degree of polymerization (n) of polyglycerin are calculated as 4 / 2 = 200%. Furthermore, the fatty acid of the polyglycerin fatty acid ester is preferably isostearic acid or oleic acid, but is not limited to these.

[0012] Specifically, polyglyceryl-10 decacaprylate, polyglyceryl-10 decacaprate, polyglyceryl-10 decalaurate, polyglyceryl-10 decamyristate, polyglyceryl-10 decastearate, polyglyceryl-10 decaisostearate, polyglyceryl-10 decaoleate, polyglyceryl-10 decamacadamia nut fatty acid, polyglyceryl-10 pentacaprylate, polyglyceryl-10 pentacaprate, polyglyceryl-10 pentalaurate, and pentamyristate. Polyglyceryl-10 tetrastearate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentaoleate, polyglyceryl-10 pentamacadamiate, polyglyceryl-2 tetracaprylate, polyglyceryl-2 tetracaprate, polyglyceryl-2 tetralaurate, polyglyceryl-2 tetramyristate, polyglyceryl-2 tetrastearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 tetraoleate Polyglyceryl-2 Tetramacadamiate, Polyglyceryl-2 Tricaprylate, Polyglyceryl-2 Tricaprate, Polyglyceryl-2 Trilaurate, Polyglyceryl-2 Trimyristate, Polyglyceryl-2 Tristearate, Polyglyceryl-2 Triisostearate, Polyglyceryl-2 Trioleate, Polyglyceryl-2 Trimacadamiate, Polyglyceryl-2 Dicaprylate, Polyglyceryl-2 Dicaprate, Polyglyceryl-2 Dilaurate, Dimillyl Examples include polyglyceryl-2 stearate, polyglyceryl-2 distearate, polyglyceryl-2 diisostearate, polyglyceryl-2 dioleate, polyglyceryl-2 dimacadamiate fatty acid, polyglyceryl-2 caprylate, polyglyceryl-2 caprate, polyglyceryl-2 laurate, polyglyceryl-2 myristate, polyglyceryl-2 stearate, polyglyceryl-2 isostearate, polyglyceryl-2 oleate, and polyglyceryl-2 macadamiate fatty acid.

[0013] Preferably, polyglyceryl-10 decacaprylate, polyglyceryl-10 decacaprate, polyglyceryl-10 decalaurate, polyglyceryl-10 decamyristate, polyglyceryl-10 decastearate, polyglyceryl-10 decaisostearate, polyglyceryl-10 decaoleate, polyglyceryl-10 decamacadamia nut fatty acid, polyglyceryl-2 tetracaprylate, polyglyceryl-2 tetracaprate, polyglyceryl-2 tetralaurate, polyglyceryl-2 tetramyristate, polyglyceryl-2 tetrastearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 tetraoleate, polyglyceryl-2 tetramacadamia nut Polyglyceryl-2 triglycerides, polyglyceryl-2 tricaprylate, polyglyceryl-2 tricaprate, polyglyceryl-2 trilaurate, polyglyceryl-2 trimiristicate, polyglyceryl-2 tristearate, polyglyceryl-2 triisostearate, polyglyceryl-2 trioleate, polyglyceryl-2 trimamacadamiate, polyglyceryl-2 dicaprylate, polyglyceryl-2 dicaprate, polyglyceryl-2 dilaurate, polyglyceryl-2 dimyristate, polyglyceryl-2 distearate, polyglyceryl-2 diisostearate, polyglyceryl-2 dioleate, and polyglyceryl-2 dimacadamiate.

[0014] More preferably, these are polyglyceryl-10 decaisostearate, polyglyceryl-10 decaoleate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 tetraoleate, polyglyceryl-2 triisostearate, polyglyceryl-2 trioleate, polyglyceryl-2 diisostearate, and polyglyceryl-2 dioleate. These can be used individually or in combination of two or more, regardless of the average degree of polymerization of polyglycerin or the type of fatty acid. In the hair cosmetic composition of the present invention, the amount of component (a) is 0.1 to 20.0% by mass, preferably 0.5 to 10.0% by mass. The fatty acid of component (a) is preferably isostearic acid or oleic acid, which can achieve improved glossiness in addition to moisturizing and softening after hair drying, and result in a stable hair cosmetic composition with a transparent appearance.

[0015] In the present invention, component (b) polyglycerol fatty acid ester is a polyglycerol fatty acid ester in which the fatty acid is ester-bonded to the average degree of polymerization (n) of polyglycerol at a rate of 10 to less than 50% of (n), and more preferably, a polyglycerol fatty acid ester in which the fatty acid is ester-bonded to the average degree of polymerization (n) of polyglycerol at a rate of 10 to 20% of (n). For example, in the case of polyglyceryl-10 dicaprylate, the average degree of polymerization (n) of polyglycerin is 10, and the number of esterified fatty acids is 2. Therefore, the fatty acids relative to the average degree of polymerization (n) of polyglycerin are calculated to be 2 / 10 = 20%.

[0016] Specifically, for example, polyglyceryl-10 dicaprylate, polyglyceryl-10 dicaprate, polyglyceryl-10 dilaurate, polyglyceryl-10 dimyristate, polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, polyglyceryl-10 dioleate, polyglyceryl-10 dimacadamiate fatty acid, polyglyceryl-10 caprylate, polyglyceryl-10 caprate, polyglyceryl-10 laurate, polyglyceryl-10 myristate, polyglyceryl-10 stearate, polyglyceryl-10 isostearate, polyglyceryl-10 oleate, macadamia nut butter Examples include polyglyceryl-10 fatty acid, polyglyceryl-6 caprylate, polyglyceryl-6 caprate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 stearate, polyglyceryl-6 isostearate, polyglyceryl-6 oleate, polyglyceryl-6 macadamia nut fatty acid, polyglyceryl-4 caprylate, polyglyceryl-4 caprate, polyglyceryl-4 laurate, polyglyceryl-4 myristate, polyglyceryl-4 stearate, polyglyceryl-4 isostearate, polyglyceryl-4 oleate, and macadamia nut fatty acid polyglyceryl-4.

[0017] Preferably, polyglyceryl-10 dicaprylate, polyglyceryl-10 dicaprate, polyglyceryl-10 dilaurate, polyglyceryl-10 dimyristate, polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, polyglyceryl-10 dioleate, polyglyceryl-10 dimacadamiate fatty acid, polyglyceryl-10 caprylate, polyglyceryl-10 caprate, polyglyceryl-10 laurate, polyglyceryl myristate Polyglyceryl-10 stearate, polyglyceryl-10 isostearate, polyglyceryl-10 oleate, polyglyceryl-10 macadamia nut fatty acid, polyglyceryl-6 caprylate, polyglyceryl-6 caprate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 stearate, polyglyceryl-6 isostearate, polyglyceryl-6 oleate, and polyglyceryl-6 macadamia nut fatty acid.

[0018] More preferably, these are polyglyceryl-10 diisostearate, polyglyceryl-10 dioleate, polyglyceryl-10 isostearate, polyglyceryl-10 oleate, polyglyceryl-6 isostearate, and polyglyceryl-6 oleate. These can be used individually or in combination of two or more, regardless of the average degree of polymerization of polyglycerin or the type of fatty acid. This invention Hair oil In this formulation, the amount of component (b) is 0.1 to 20.0% by mass, preferably 0.5 to 10.0% by mass. The fatty acid of component (b) is preferably isostearic acid or oleic acid, which can achieve improved gloss in addition to moistness and softness after hair drying, and has a stable, transparent appearance. Hair oil You can obtain this.

[0019] This invention Hair oilIn this case, for the component (a) polyglyceryl fatty acid ester in which fatty acids are ester-bonded to the average degree of polymerization (n) of polyglycerol at 50 to 200% of (n), the mass ratio (b) / (a) of the component (b) polyglyceryl fatty acid ester in which fatty acids are ester-bonded to the average degree of polymerization (n) of polyglycerol at less than 10 to 50% of (n) is 0.1 to 1, preferably 0.2 to 0.5, more preferably 0.25 to 0.4. When the mass ratio (b) / (a) is less than 0.1, the proportion of the component (b) is small, so the glossiness on the hair surface is poor. When the mass ratio (b) / (a) exceeds 1, the proportion of the component (b) is large, so the feel after hair drying is poor. Specifically, it has poor finger combability and is sticky. By setting the mass ratio (b) / (a) of the component (a) and the component (b) to 0.1 to 1, the feel after hair drying can be improved. In the present invention's Hair oil in, the total amount (a)+(b) of the component (a) and the component (b) is 0.2% by mass or more and 20% by mass or less, preferably 1% by mass or more and 10% by mass or less.

[0020] The component (c) oil or fat in the present invention is not particularly limited. For example, natural essential oils such as rose oil and lavender oil, vegetable oils and animal fats such as olive oil and jojoba oil, ester oils such as methylheptyl laurate (product name: NIKKOL GS-HML, manufactured by Nikko Chemicals Co., Ltd.), hydrocarbons such as squalane (product name: NIKKOL Sugar Squalane, manufactured by Nikko Chemicals Co., Ltd.) and hydrogenated farnesene (product name: NEOSSANCE HEMISQUALANE HF, manufactured by Nikko Chemicals Co., Ltd.), volatile hydrocarbon oils such as isododecane and hydrogenated polyisobutene, fragrances, etc. Solid or semi-solid oils and fats such as shea butter and mango seed fat can be used by mixing and dissolving or heating and dissolving with other liquid oils. One or more of these can be used in combination. In the present invention's Hair oil in, the blending amount of the component (c) is 1.0 to 98.0% by mass, preferably 5.0 to 95.0% by mass.

[0021] The oils and fats in component (c) of the present invention result in different textures after hair drying depending on the type of oil or fat used. For example, volatile hydrocarbon oils such as hydrogenated polyisobutene and isododecane evaporate from the hair surface when heated with a hair dryer, thus enhancing the effects of other oils and fats and polyglycerin fatty acid esters. Vegetable oils such as avocado oil and sunflower oil, and hydrocarbon oils such as squalane and mineral oil are not volatile, so they can give hair a bundled look and hold. Compared to when no oil or fat is included, the texture after hair drying is better when oil or fat is included, allowing for the achievement of various textures with appropriate amounts of oil or fat.

[0022] In the present invention, component (c) oils and fats consist of 90% or more volatile oils. can be This formulation is suitable for providing conditioning and shine because, after the volatile oils are evaporated by heat from a hair dryer or similar device, components (a) and (b) remain uniformly on the hair surface. Furthermore, by actively incorporating renewable plant-derived ingredients other than volatile oils, it can be applied to the development of formulations that consider human and environmental health.

[0023] This invention Hair oil It is preferable that the product does not contain silicone oil. Although silicone oil is one of the versatile liquid oils that smooths the feel of hair after drying, restrictions on the use of cyclic silicone compounds (cyclotetrasiloxane, cyclopentasiloxane, cyclohexasiloxane) have been strengthened, and in the EU, the sale of "cosmetics that are washed off with water after use" has been banned. In the future, it is increasingly likely that other ingredients will be used as substitutes, therefore, the present invention Hair oil In this case, it is preferable to incorporate renewable plant-derived liquid oil.

[0024] The component (d) water in the present invention is not particularly limited and includes purified water, distilled water, ion-exchanged water, etc. The amount of component (d) in the hair cosmetic composition of the present invention is 0.01 to 95.0% by mass, preferably 0.2 to 90.0% by mass. Component (d) water of the present invention is included to suppress turbidity or precipitation caused by polyglycerol fatty acid esters in which fatty acids are ester-bonded to component (b) polyglycerol in an amount of less than 10-50% of (n) relative to the average degree of polymerization (n).

[0025] This invention Hair oil By using a combination of two or more specific polyglycerin fatty acid esters, it is possible to achieve not only increased moisture and softness after hair drying, but also improved shine.

[0026] Furthermore, the present invention Hair oil In addition, within the limits that do not impair the effects of the present invention, a highly versatile ingredient found in hair cosmetics such as hair treatments can be added. For example, lecithin derivatives such as hydrogenated lecithin (product name: NIKKOL Lesinol S-10M PLUS, manufactured by Nikko Chemicals Co., Ltd.), glycerin fatty acid esters such as glyceryl stearate (product name: NIKKOL MGS-AV, manufactured by Nikko Chemicals Co., Ltd.), sorbitan fatty acid esters such as sorbitan isostearate (product name: NIKKOL SI-10RV, manufactured by Nikko Chemicals Co., Ltd.), polyoxyethylene sorbitan fatty acid esters such as polysorbate 80 (product name: NIKKOL TO-10V, manufactured by Nikko Chemicals Co., Ltd.), polyoxyalkylene sterols such as PEG-30 phytosterol (product name: NIKKOL BPS-30, manufactured by Nikko Chemicals Co., Ltd.), polyoxyethylene alkyl ethers such as beheneth-30 (product name: NIKKOL BB-30, manufactured by Nikko Chemicals Co., Ltd.), cetyl phosphate (product name: NIKKOL It can contain monoalkyl phosphates such as Purephos α (manufactured by Nikko Chemicals Co., Ltd.), polyols such as glycerin and DPG, cationic polymers such as polyquaternium-10 and guar hydroxypropyltrimonium chloride, pH buffers such as citric acid and arginine, preservatives such as sodium benzoate and phenoxyethanol, hydrolyzed proteins, peptides, amino acids, vitamins, and UV absorbers.

[0027] Furthermore, the present invention Hair oilThis allows for the stable maintenance of a transparent appearance. In this invention, transparency means that the appearance of the sample the day after preparation is observed visually and is uniformly transparent without any clouding or precipitation. Furthermore, using a UV-Vis spectrophotometer (product name: Jasco V-650, manufactured by JASCO Corporation), a transmittance of 99.5% or higher is defined as "transparent" when measured at a fixed wavelength (620 nm) at room temperature.

[0028] The present invention will be further described below with reference to examples, but the present invention is not limited thereto. In the following examples, unless otherwise specified, the amount of the blending refers to mass %. [Examples]

[0029] 1. Sample preparation The inventions shown in Tables 1 and 2, Reference item A comparative sample was prepared, and each was evaluated. Phase A and Phase B are mixed uniformly, Phase B is added to Phase A and mixed uniformly, and the present invention is obtained. Reference item And used as a comparison product.

[0030] As component (a), polyglyceryl-10 decaisostearate (product name: NIKKOL Decaglyn 10-ISV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 decaoleate (product name: NIKKOL Decaglyn 10-OV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 pentaisostearate (product name: NIKKOL Hexaglyn 5-ISV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 pentaoleate (product name: NIKKOL Hexaglyn 5-OV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-2 triisostearate (product name: NIKKOL DGTIS, manufactured by Nikko Chemicals Co., Ltd.), and polyglyceryl-2 isostearate (product name: NIKKOL DGMIS, manufactured by Nikko Chemicals Co., Ltd.) were each incorporated into phase B.

[0031] As component (b), the following were added to phase A: polyglyceryl-10 isostearate (product name: NIKKOL Decaglyn 1-ISV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 oleate (product name: NIKKOL Decaglyn 1-OV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 diisostearate (product name: NIKKOL Decaglyn 2-ISV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 trioleate (product name: NIKKOL Decaglyn 3-OV, manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-6 oleate (product name: NIKKOL Hexaglyn 1-OV, manufactured by Nikko Chemicals Co., Ltd.), and polyglyceryl-4 oleate (product name: NIKKOL Tetraglyn 1-OV, manufactured by Nikko Chemicals Co., Ltd.).

[0032] As component (c), squalane (product name: NIKKOL Sugar Squalane, manufactured by Nikko Chemicals Co., Ltd.) and isododecane (product name: Permethyl 99A, manufactured by Nippon Koken Kogyo Co., Ltd.) were incorporated into phase B.

[0033] 2. Transparency Assessment The transparency of the sample prepared in step 1 above was evaluated. Solubility was assessed by visually observing the appearance of the solution the day after sample preparation. A uniformly transparent solution was marked with a circle (○), and a solution with turbidity or precipitation was marked with a cross (×). Furthermore, a UV-Vis spectrophotometer (product name: Jasco V-650, manufactured by JASCO Corporation) was used to measure the transmittance at a fixed wavelength (620 nm) at room temperature, and a transmittance of 99.5% or higher was considered "transparent". The results are shown in Tables 1 and 2.

[0034] 3. User experience evaluation The sample prepared in step 1 above was used to evaluate its usability. Based on evaluations by professional sensory evaluators, good results were marked with ○ and poor results with ×. The results are shown in Tables 1 and 2. Evaluation criteria: (1) Moisturizing feeling after hair drying (2) Softness of hair after drying (3) Shine after hair drying

[0035] 4.Results Tables 1 and 2 show that when the mass ratio of component (b) to component (a) is in the range of 0.1 to 1, excellent results were obtained in terms of transparency and usability.

[0036] [Table 1]

[0037] [Table 2] [Industrial applicability]

[0038] According to the present invention, by using a combination of two or more specific polyglycerin fatty acid esters, it is possible to achieve not only increased moisture and softness after hair drying, but also improved gloss. ru.

Claims

1. A hair oil characterized by containing the following (a) to (d) as essential components, having a mass ratio of component (b) to component (a) (b) / (a) of 0.1 to 1, having a total amount of component (a) and component (b) (a) + (b) of 1% to 10% by mass when the entire hair oil is considered as 100% by mass, and having a transparent appearance. (a) Polyglycerol fatty acid esters in which the fatty acid is selected from isostearic acid or oleic acid, and the fatty acid is esterified to 100-200% of the average degree of polymerization (n) of polyglycerol (n). (b) Polyglycerol fatty acid ester in which the fatty acid is selected from isostearic acid or oleic acid, and the fatty acid is esterified to 10-20% of the average degree of polymerization (n) of polyglycerol (n). (c) Oils and fats in which 90% or more are volatile oils (d) Water is 0.01 to 0.5% by mass

2. The hair oil according to claim 1, characterized in that it does not contain silicone oil.

Images