Cosmetic composition

Abstract

To provide a cosmetic composition that excels in an instant warming sensation felt immediately after use as well as prolonged warming sensation thereafter.SOLUTION: The present invention provides a cosmetic composition containing following components (A)-(E). A content of the component (A) is 40 mass% or more. A content of the component (B) is 10 mass% or more. The component (A): at least one selected from a group consisting of polyethylene glycol and polyethylene glycol derivatives. The component (B): a polyhydric alcohol excluding the component (A). The component (C): vanillyl alkyl ether. The component (D): an anionic surfactant. The component (E): an ampholytic surfactant.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic composition, and more specifically, to a cosmetic composition suitable for use on wet scalp. [Background technology]

[0002] One of the causes of skin troubles and poor health is poor circulation. One of the methods to improve poor circulation is to give a warm feeling. When blood circulation is poor due to poor circulation, it is easy to feel cold, but it is expected that giving a warm feeling will promote blood circulation. Cosmetic compositions that can give a warm feeling when used have also been developed. For example, Patent Document 1 proposes a cleansing agent consisting of at least one selected from the group consisting of propylene glycol, dipropylene glycol, and glycerin, and a specific nonionic surfactant. Patent Document 2 proposes a cosmetic containing a substance that generates heat and increases the temperature when in contact with water. Patent Document 3 proposes a skin cosmetic that contains a water-swelling clay mineral, a specific polyhydric alcohol, and a specific nonionic surfactant, and generates heat when mixed with water. Patent Document 4 proposes a gel-like cosmetic consisting of a specific amount of polyethylene glycol, and a specific amount of glycerin and carboxyvinyl polymer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-269719 A [Patent Document 2] Japanese Patent Application Publication No. 56-57711 [Patent Document 3] JP 2000-256160 A [Patent Document 4] Patent No. 3660560 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Documents 1 to 3 do not consider the duration of the warm sensation at all. Patent Document 4 considers the duration of the warm sensation, but according to the inventors' investigation, the effect is still insufficient. Moreover, none of the documents considers the immediate warm sensation felt immediately after use, for example within 1 to 2 seconds.

[0005] An object of the present invention is to provide a cosmetic composition which is excellent in both the immediate warming sensation felt immediately after use and the sustained warming sensation thereafter. [Means for solving the problem]

[0006] The present invention relates to Contains the following components (A) to (E), The content of the component (A) is 40% by mass or more, The present invention provides a cosmetic composition having a content of the component (B) of 10% by mass or more. (A) at least one selected from the group consisting of polyethylene glycol and polyethylene glycol derivatives (B) Polyhydric alcohol other than the component (A) (C) Vanillyl alkyl ether (D) Anionic surfactants (E) Amphoteric surfactant Effect of the Invention

[0007] According to the present invention, it is possible to provide a cosmetic composition that is excellent in both the immediate warming sensation that can be felt immediately after use and the sustained warming sensation thereafter. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The cosmetic composition according to the first aspect of the present invention comprises: Contains the following components (A) to (E), The content of the component (A) is 40% by mass or more, The content of the component (B) is 10% by mass or more. (A) at least one selected from the group consisting of polyethylene glycol and polyethylene glycol derivatives (B) Polyhydric alcohol other than the component (A) (C) Vanillyl alkyl ether (D) Anionic surfactants (E) Amphoteric surfactant

[0009] In the second aspect of the present invention, for example in the cosmetic composition according to the first aspect, the water content is 30% by mass or less.

[0010] In a third aspect of the present invention, for example in the cosmetic composition according to the first or second aspect, the content of the component (C) is from 0.0001% by mass to 1% by mass.

[0011] In a fourth aspect of the present invention, for example, the cosmetic composition according to any one of the first to third aspects is a cleanser composition.

[0012] Hereinafter, an embodiment of the present invention will be described. However, the following description is not intended to limit the present invention to a specific embodiment.

[0013] [Cosmetic composition] The cosmetic composition of the present embodiment contains the following components (A), (B), (C), (D) and (E). The content of component (A) is 40% by mass or more. The content of component (B) is 10% by mass or more. (A): At least one selected from the group consisting of polyethylene glycol and polyethylene glycol derivatives (B): Polyhydric alcohol excluding component (A) (C): Vanillyl alkyl ether (D): Anionic surfactant (E): Amphoteric surfactant

[0014] Ingredient (A) Component (A) is at least one selected from the group consisting of polyethylene glycol and polyethylene glycol derivatives. Component (A) can mainly contribute to improving an immediate warming sensation in cooperation with component (B). Component (A) can also contribute to a sustained warming sensation in cooperation with components (B) and (C).

[0015] Examples of polyethylene glycol (PEG) are PEG-4, PEG-6, PEG-8, PEG-12, PEG-20, PEG-6 / PEG-32, PEG-32, and PEG-40. However, PEG is not limited to the above examples. PEG is preferably PEG-4, PEG-6, PEG-8, PEG-12, or PEG-20, and more preferably PEG-8 or PEG-12. PEG-8 and PEG-12 are also suitable for improving sustained warmth. The cosmetic composition of the present embodiment may contain PEG-8, PEG-12, or PEG-12 as component (A).

[0016] The average molecular weight of PEG is, for example, 200 to 2000. The lower limit of the average molecular weight may be 300 or more, 400 or more, 500 or more, or even 600 or more. The upper limit of the average molecular weight may be 1500 or less, 1200 or less, 1000 or less, 900 or less, 800 or less, 700 or less, or even 600 or less. PEG having an average molecular weight of 400 or more, particularly 600 or more, is also suitable for improving sustained warmth.

[0017] Polyethylene glycol derivative (PEG derivative) refers to a compound containing ethylene oxide (-CH2CH2O-) as a repeating unit. However, surfactants are excluded from the PEG derivatives that may be component (A). Specific examples of PEG derivatives are PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, methyl gluceth-10, and methyl gluceth-20. The PEG derivative may be a compound listed in the cosmetic labeling name list.

[0018] The content of component (A) in the cosmetic composition is 40% by mass or more. The content may be 41% by mass or more, 42% by mass or more, 43% by mass or more, 44% by mass or more, 45% by mass or more, 46% by mass or more, 47% by mass or more, 48% by mass or more, 49% by mass or more, or even 50% by mass or more. The upper limit of the content may be, for example, 80% by mass or less, 75% by mass or less, 70% by mass or less, 68% by mass or less, 65% by mass or less, 63% by mass or less, 60% by mass or less, less than 60% by mass, 59% by mass or less, 58% by mass or less, 57% by mass or less, 56% by mass or less, 55% by mass or less, 54% by mass or less, 53% by mass or less, 52% by mass or less, 51% by mass or less, or even 50% by mass or less.

[0019] The cosmetic composition of the present embodiment may contain one or more types of component (A).

[0020] ·Component (B) Component (B) is a polyhydric alcohol other than component (A). Component (B) can mainly contribute to improving an immediate warming sensation in cooperation with component (A). Component (B) can also contribute to a sustained warming sensation in cooperation with components (A) and (C). Furthermore, when the cosmetic composition of the present embodiment is used as a cleansing composition, component (B) can also contribute to the smooth running of fingers during rinsing.

[0021] A polyhydric alcohol is a compound having two or more hydroxyl groups in one molecule. Examples of polyhydric alcohols that can be component (B) are propylene glycol (PG), glycerin, 1,3-butylene glycol, dipropylene glycol (DPG), diglycerin, and polyglycerin-10. The polyhydric alcohol is preferably PG or glycerin. Sugar alcohols may be excluded from the polyhydric alcohol.

[0022] The content of component (B) in the cosmetic composition is 10% by mass or more. The content may be 13% by mass or more, 15% by mass or more, 18% by mass or more, 20% by mass or more, 22% by mass or more, 24% by mass or more, 25% by mass or more, 26% by mass or more, 27% by mass or more, or even 28% by mass or more. The upper limit of the content may be, for example, less than 60% by mass, 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass or less, less than 38% by mass, 36% by mass or less, 35% by mass or less, 34% by mass or less, 33% by mass or less, or even 32% by mass or less.

[0023] The cosmetic composition of the present embodiment may contain one or more kinds of component (B). When two or more kinds of component (B) are contained, the contained component (B) may contain PG, or may contain PG and glycerin. A combination of component (B) containing PG, particularly a combination of component (B) containing PG and glycerin, is particularly suitable for improving an immediate warming sensation. When PG and glycerin are contained in component (B), the content ratio of PG to glycerin (by mass) may be 3:1 to 7:1, 3.5:1 to 6.5:1, 4:1 to 6:1, or even 4.5:1 to 5.5:1, expressed in terms of PG:glycerin. The content ratio of PG to glycerin being within the above range can particularly contribute to improving an immediate warming sensation.

[0024] The content of component (B) may be equal to or less than the content of component (A), or may be smaller than the content of component (A).

[0025] The content ratio (mass basis) of component (A) to component (B), expressed as component (A):component (B), may be 85:15 to 50:50, 80:20 to 55:45, 75:25 to 60:40, 70:30 to 60:40, or even 65:35 to 60:40. The content ratio (mass basis) of component (A) to component (B) may be 70:30 to 55:45.

[0026] ·Component (C) Component (C) is a vanillyl alkyl ether. Component (C) can mainly contribute to a sustained warm sensation.

[0027] Vanillyl alkyl ether is a compound represented by the following formula (1). R in formula (1) is an alkyl group. The number of carbon atoms of the alkyl group that can be R is, for example, 1 to 6, and may be 4 to 5. Examples of the alkyl group are a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, an n-pentyl group, and an n-hexyl group. The alkyl group is preferably an n-butyl group. Hereinafter, vanillyl alkyl ether having an n-butyl group as R will be referred to as "vanillyl butyl ether".

[0028] [ka]

[0029] The content of component (C) in the cosmetic composition is, for example, 0.0001% by mass or more and 5% by mass or less. The lower limit of the content may be 0.001% by mass or more, 0.003% by mass or more, 0.005% by mass or more, 0.008% by mass or more, 0.01% by mass or more, 0.03% by mass or more, 0.05% by mass or more, 0.08% by mass or more, or even 0.1% by mass or more. The upper limit of the content may be 3% by mass or less, 2% by mass or less, 1.5% by mass or less, 1.2% by mass or less, 1% by mass or less, 0.8% by mass or less, 0.6% by mass or less, 0.5% by mass or less, 0.3% by mass or less, 0.2% by mass or less, 0.1% by mass or less, 0.08% by mass or less, 0.05% by mass or less, or even 0.03% by mass or less.

[0030] The cosmetic composition of the present embodiment may contain one or more types of component (C).

[0031] ·Component (D) Component (D) is an anionic surfactant that can contribute to the cleansing action of the cosmetic composition.

[0032] Examples of anionic surfactants include amino acid surfactants, taurine surfactants, carboxylic acid surfactants, succinic acid surfactants, sulfonic acid surfactants, and sulfate ester surfactants. However, the anionic surfactants that can be component (D) are not limited to the above examples.

[0033] Examples of amino acid-based surfactants are glutamic acid-based surfactants, alanine-based surfactants, aspartic acid-based surfactants, and glycine-based surfactants.

[0034] Examples of glutamic acid surfactants are cocoyl glutamate, lauroyl glutamate, and myristoyl glutamate. Examples of alanine surfactants are cocoyl alanine salt, cocoyl methyl alanine salt, lauroyl methyl alanine salt, and myristoyl methyl alanine salt. Examples of aspartic acid surfactants are lauroyl aspartate and acyl (C12,14) aspartate. Examples of glycine surfactants are cocoyl glycine salt, lauroyl glycine salt, lauroyl sarcosine salt, and cocoyl sarcosine salt. Examples of each salt are sodium salt, potassium salt, and triethanolamine salt.

[0035] Examples of the taurine surfactant are cocoyl taurine salt, cocoyl methyl taurine salt, cocoyl methyl taurine salt, and caproyl methyl taurine salt, and a preferred example is cocoyl methyl taurine salt. Examples of each salt are sodium salt and potassium salt. Each salt may be a sodium salt.

[0036] An example of the carboxylic acid surfactant is an alkyl ether carboxylate. Examples of the alkyl ether carboxylate are sodium laureth-4 carboxylate, sodium laureth-5 carboxylate, sodium laureth-6 carboxylate, sodium laureth-13 carboxylate, sodium C12-13 pareth-8 carboxylate, and sodium C12-15 pareth-8 carboxylate, and a preferred example is sodium laureth-4 carboxylate. An example of the carboxylic acid is acetic acid.

[0037] An example of the succinic acid surfactant is polyoxyethylene sulfosuccinate. Examples of the respective salts are the sodium salt and the potassium salt.

[0038] Examples of sulfonic acid surfactants are α-olefin sulfonate and acyl isethionate. An example of α-olefin sulfonate is lauryl sulfate. Examples of acyl isethionate are lauroyl isethionate, lauroyl methyl isethionate, and cocoyl isethionate. Examples of each salt are sodium salt and potassium salt.

[0039] Examples of the sulfate surfactant include alkyl sulfate and alkyl ether sulfate. An example of the alkyl ether sulfate is sodium laureth sulfate.

[0040] In order to improve the smoothness of the detergent composition when rinsed off, glutamic acid surfactants, taurine surfactants, carboxylic acid surfactants, and sulfonic acid surfactants are particularly suitable.

[0041] The content of component (D) in the cosmetic composition is, for example, 0.1% by mass or more, and may be 0.5% by mass or more, 1% by mass or more, 3% by mass or more, 5% by mass or more, 6% by mass or more, 7% by mass or more, 8% by mass or more, 9% by mass or more, 10% by mass or more, 11% by mass or more, or even 12% by mass or more. The upper limit of the content is, for example, 25% by mass or less, and may be 22% by mass or less, 20% by mass or less, 19% by mass or less, 18% by mass or less, 17% by mass or less, 16% by mass or less, or even 15% by mass or less.

[0042] The cosmetic composition of the present embodiment may contain one or more types of component (D).

[0043] ·Component (E) Component (E) is an amphoteric surfactant. In the cosmetic composition of this embodiment, component (E) can mainly contribute to the cleansing action of the cosmetic composition.

[0044] Examples of amphoteric surfactants include betaine surfactants, sultaine (sulfobetaine) surfactants, hydroxysultaine surfactants, and imidazoline surfactants, although the amphoteric surfactants that may be component (E) are not limited to the above examples.

[0045] Examples of betaine surfactants include alkyl betaines, alkyl amino betaines, and alkyl amide betaines. The number of carbon atoms in the alkyl group in each betaine compound is, for example, 7 to 20, and may be 8 to 18, 10 to 18, or even 12 to 18. The alkyl group may be linear or branched. Betaine surfactants are particularly suitable for improving the cleaning action of cosmetic compositions and the smoothness of the skin when used as a cleansing composition.

[0046] An example of a sultaine surfactant is an alkyl sultaine. An example of a hydroxysultaine surfactant is an alkyl hydroxysultaine.

[0047] More specific examples of component (E) are lauryl betaine, coco betaine, stearyl betaine, oleyl betaine, cocohexadecyl dimethyl betaine, coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxymethyl betaine, cetyl dimethyl carboxymethyl betaine, lauryl amidopropyl betaine, coco amidopropyl betaine, myristamidopropyl betaine, coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl hydroxysultaine, cocamidopropyl hydroxysultaine, and lauramidopropyl hydroxysultaine.

[0048] The content of component (E) in the cosmetic composition is, for example, 0.1% by mass or more, and may be 0.3% by mass or more, 0.5% by mass or more, 0.6% by mass or more, 0.7% by mass or more, 0.8% by mass or more, 0.9% by mass or more, or even 1% by mass or more. The upper limit of the content is, for example, 10% by mass or less, and may be 8% by mass or less, 6% by mass or less, 5% by mass or less, 4% by mass or less, 3% by mass or less, 2% by mass or less, or even 1.5% by mass or less.

[0049] The cosmetic composition of the present embodiment may contain one or more types of component (E).

[0050] The cosmetic composition of the present embodiment may contain any component other than the above-mentioned components. The optional component may be a component contained in a known cosmetic composition.

[0051] Optional components may be appropriately blended, such as solvents, esters, higher fatty acids, fluorine compounds, silicones, nonionic surfactants, cationic polymers, cellulose derivatives, hydrolyzed peptides, vitamins, plant extracts, moisturizers, UV absorbers, antioxidants, preservatives, amino acids, fragrances, essential oils, pigments, pH stabilizers, chelating agents, solvents, anti-inflammatory agents, and gelling agents.

[0052] Examples of the solvent are water (purified water) and alcohols such as ethanol, isopropyl alcohol, and benzyl alcohol. When water is contained, the content of water is preferably 30% by mass or less, and may be less than 30% by mass, 29% by mass or less, 27% by mass or less, 25% by mass or less, 22% by mass or less, 20% by mass or less, 17% by mass or less, 15% by mass or less, 12% by mass or less, 10% by mass or less, 9% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, 5% by mass or less, 4% by mass or less, 3% by mass or less, 2% by mass or less, or even 1.5% by mass or less. The lower limit of the content is, for example, 0.1% by mass or more, and may be 0.3% by mass or more, 0.5% by mass or more, 0.8% by mass or more, 0.9% by mass or more, or even 1.0% by mass or more.

[0053] The cosmetic composition of the present embodiment may not substantially contain a cationic surfactant. Also, the cosmetic composition of the present embodiment may not substantially contain a silicone compound, in other words, may be a non-silicone composition. In this specification, "substantially not contained" means that the content is less than 0.5% by mass, preferably less than 0.3% by mass, less than 0.2% by mass, less than 0.1% by mass, less than 0.05% by mass, or even less than 0.01% by mass.

[0054] The cosmetic composition of the present embodiment is suitable for use on wet skin. However, the manner of use is not limited to the above example. For example, it may be used on wet hair. Use in a manner that contacts liquid water is particularly suitable for improving immediate warmth and sustained warmth.

[0055] The cosmetic composition of the present embodiment may be a skin cosmetic or a hair cosmetic.

[0056] The cosmetic composition of this embodiment can be foamed before use due to the inclusion of components (D) and (E). Foaming can be done by hand or a brush, or a dispenser capable of foaming can be used. In other words, the cosmetic composition of this embodiment may be a foamable composition, or a foamable composition that does not substantially contain a foaming agent. The cosmetic composition of this embodiment may also be a cleansing composition such as a shampoo composition. Shampoo compositions are usually applied to wet hair and scalp and foamed before use. However, the uses of the cosmetic composition of this embodiment are not limited to the above examples.

[0057] The cosmetic composition of the present embodiment can be prepared in various dosage forms. Examples of the dosage form include lotion, cream, gel, foam, mist, and spray. When preparing a foam (mousse) dosage form, a propellant may be blended. Examples of the propellant include liquefied petroleum gas (LPG), dimethyl ether (DME), hexane, and carbon dioxide gas.

[0058] Examples of product forms include in-bath treatments, out-bath treatments, shampoos, styling products, and scalp preparations. EXAMPLES

[0059] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.

[0060] [Cosmetic composition] Cosmetic compositions having the compositions shown in Tables 1A, 1B, 1C, and 2 below were prepared by mixing the respective components. The letters A to E in the "Components" column of each table correspond to components (A) to (E), respectively. The content of each component in each table is in mass %, and a blank space means that the component is not contained.

[0061] [Evaluation of cosmetic compositions] The following evaluations were carried out for each of the prepared compositions.

[0062] (Instant warmth) After thoroughly wetting the hair with warm water, each composition was taken in the hands and applied directly to the scalp. At that time, a sensory evaluation was performed to determine whether a warm sensation was felt quickly within 1 to 2 seconds after application (whether an immediate warm sensation was felt). The sensory evaluation was performed by 10 panelists. The evaluation criteria were as follows. 5: 9 or more panelists rated that they felt an immediate warmth 4: 7-8 panelists rated that they felt an immediate warmth 3: 5-6 panelists rated that they felt an immediate warmth 2: Three or four panelists rated that they felt an immediate warmth. 1: Two or fewer panelists rated the product as having an immediate warm sensation

[0063] (Sustained warmth) After thoroughly wetting the hair with warm water, each composition was applied directly to the scalp and spread over the entire scalp to create a lather. The lathered composition was used for washing for 2 minutes, and then rinsed with warm water. The water was thoroughly removed, towel-dried, and dried with a hair dryer. The warmth felt from the start of the above series of washing operations to the end of towel-drying and thereafter was subjected to a sensory evaluation. The sensory evaluation was carried out by 10 panelists. The evaluation criteria were as follows: 5: More than 9 panelists rated that they felt a warm sensation even after towel drying 4: 7-8 panelists felt a warm sensation even after towel drying 3: 5-6 panelists felt a warm sensation even after towel drying 2: Three to four panelists felt a warm sensation even after towel drying. 1: Two or fewer panelists felt a warm sensation even after towel drying

[0064] (Feeling good when rinsing) When evaluating the duration of the warming sensation, a sensory evaluation was also conducted on the ease with which the composition could be run through the skin when rinsed off with warm water after the cleansing operation. The sensory evaluation was conducted by 10 panelists. The evaluation criteria were as follows: 5: Nine or more panelists rated the product as "highly smooth to the touch." 4: 7-8 panelists rated it as "highly smooth to the touch" 3: Five or six panelists rated the product as being very smooth to the touch. 2: Three or four panelists rated the product as being very smooth to the touch. 1: Two or fewer panelists rated the product as "highly smooth to the touch"

[0065] The evaluation results of each composition are shown in Tables 1A to 1C and Table 2.

[0066] [Table 1A]

[0067] [Table 1B]

[0068] [Table 1C]

[0069] [Table 2]

[0070] As shown in Tables 1A to 1C and Table 2, the compositions of the examples were excellent in both the immediate warmth felt immediately after application to wet scalp, and the sustained warmth thereafter. [Industrial Applicability]

[0071] The cosmetic composition of the present invention can be used in various products including skin cosmetics and hair cosmetics. The cosmetic composition of the present invention may be a cleansing composition such as a shampoo composition.

Claims

1. Contains the following components (A) to (E): The content of the component (A) is 40% by mass or more, A cosmetic composition, wherein the content of the component (B) is 10% by mass or more. (A) at least one selected from the group consisting of polyethylene glycol and polyethylene glycol derivatives (B) Polyhydric alcohol other than the component (A) (C) Vanillyl alkyl ether (D) Anionic surfactant (E) Amphoteric surfactant

2. The cosmetic composition according to claim 1 , wherein the water content is 30% by mass or less.

3. The cosmetic composition according to claim 1, wherein the content of the component (C) is 0.0001% by mass or more and 1% by mass or less.

4. The cosmetic composition according to claim 1 , which is a cleansing composition.

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