JP5312869B2 - A transparent gel-like shaving composition. - Google Patents

Description

  The present invention relates to a transparent gel-like shaving composition.

  Conventionally, as a shaving agent, a shaving foam which uses a fatty acid as a base and forms bubbles with a propellant such as liquefied petroleum gas or forms bubbles with a pump-type container has been used (for example, Patent Document 1). See 2). These shaving foams can prevent dripping from the skin by making them foamy, but because they are foams, the contact ability between the cocoon and moisture is reduced and the steaming effect of the cocoon is inferior. For this reason, there is a problem in that the blade slip during shaving is poor and the shaving cannot be sufficiently performed, and the surface layer of the skin is damaged and congested, and the razor is irritated.

  In order to solve the problems of shaving foam, a gel-like shaving agent has been developed that contains a large amount of water and thickens to prevent dripping, soften the heel, and improve the slidability of the razor. (For example, see Patent Document 3). However, although such a shaving gel is excellent in the steaming effect of the eyelids at the time of application, there is a problem that clogging of the razor occurs during shaving and it is difficult to shave deeply.

  In order to solve the various problems of the above-described shaving foam and shaving gel, an attempt has been made to form the foam by applying it in a gel form and then foaming. For example, a non-aerosol shaving composition containing a potassium salt of a linear fatty acid, a specific active agent, and a specific water-soluble thickener (see, for example, Patent Document 4), polyethylene oxide and polyvinylpyrrolidone A post-foaming shaving gel composition (see, for example, Patent Document 5) and the like are proposed.

  However, in these attempts, when a fatty acid that is excellent in foaming is used as the foam-forming agent, there is a problem that precipitation due to the fatty acid occurs during low-temperature storage, resulting in poor formulation stability. In addition, these precipitations cause the formulation to become cloudy, have a transparent appearance, and are a factor that impairs the aesthetics of a high-quality gel preparation.

JP 2001-31540 A JP-A-9-48714 JP 2005-154316 A Japanese translation of PCT publication No. 8-508730 JP-T-2001-511150

  The present invention has been made in view of the above prior art, suppresses white turbidity during low-temperature storage, and has excellent formulation stability that persists in transparency, and also has excellent adhesion during application and sufficient steaming. A transparent gel-like shaving composition that is effective and can be shaved without clogging the razor by foaming after application, and can prevent razor loss such as congestion and tingling after shaving. The issue is to provide.

That is, the present invention
[1] Gel-like, comprising (A) a straight chain fatty acid, (B) a branched chain fatty acid, (C) an organic amine, (D) a cellulose-based thickener and (E) water, ) The linear fatty acid is a linear saturated fatty acid having 12 to 22 carbon atoms, the (A) linear fatty acid contains both myristic acid and palmitic acid, and the (B) branched chain fatty acid has a carbon number. 12-18 branched saturated fatty der is, the (B) branched chain fatty acid comprises at least one selected isolauric, isomyristic, isopalmitic, from the group of isostearic acid, transparent gel-like shaving In the composition for use, the content of the (A) linear fatty acid is 2% by weight or more and 20% by weight or less, and the content of the (B) branched fatty acid is 0.5% by weight or more and 18% by weight or less. Yes, the content of (C) organic amine is 3% by weight The content of the (D) cellulosic thickener is 0.5% by weight or more and 3% by weight or less, and the content of the (E) water is 20% by weight or more. 90 wt% or less der Ru transparent gel-like shaving composition,
[2 ] The transparent gel-like shaving composition as described in [1 ] above, wherein the weight content ratio of the component (A) and the component (B) is A: B = 4: 1 to 1: 4 object,
[ 3 ] The transparent component according to [1] or [2] , wherein the component (C) is triethanolamine, and the degree of neutralization with respect to the fatty acid is 1.3 to 1.7 equivalents. A gel shaving composition,
[ 4 ] The transparent gelled gel according to any one of [1] to [ 3 ], wherein the component (D) contains at least one selected from the group consisting of hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose. Shaving composition,
[5] Ri further (F) Na contain hydrocarbon oil, in the composition for the transparent gel-like shaving, the (F) content of the hydrocarbon oil is 0.1 wt% or more, with 5 wt% or less Oh Ru above [1] to the transparent gel-shaving composition according to any one of [4], and [6] above [1] composition transparent gel-like shaving according to any one of to [5] The present invention relates to a shaving method characterized in that an object is applied to the skin, foamed with a hand and / or a foaming brush, and then the shave is shaved.

  The transparent gel-like shaving composition of the present invention has the effect of suppressing the white turbidity caused by the fatty acid during low-temperature storage and having excellent formulation stability that the transparency is maintained. Moreover, since there is no dripping at the time of application | coating and it is excellent in adhesiveness, there exists an effect that sufficient steaming effect is acquired. Furthermore, it is excellent in foaming after application, and it is possible to shave the razor without clogging and to prevent razor loss such as congestion and tingling after shaving.

  The transparent gel-like shaving composition of the present invention contains (A) a straight chain fatty acid, (B) a branched chain fatty acid, (C) an organic amine, (D) a cellulosic thickener, and (E) water. Become.

As a linear fatty acid of (A) component, a C12-C22 saturated or unsaturated linear fatty acid is mentioned, for example. From the viewpoint of foaming after coating, a linear saturated fatty acid having 12 to 22 carbon atoms can be preferably used. Specific examples include lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, arachidic acid, and behenic acid. One of these components may be used alone, or two or more thereof may be used in appropriate combination. However, in the present invention, straight-chain fatty acid which is a component (A) include both the straight chain saturated fatty der is, myristic acid and palmitic acid having 12 to 22 carbon atoms.

  The content of the component (A) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 2% by weight or more is preferable in the composition from the viewpoint of foaming, more preferably 4% by weight. That's it. Moreover, from a transparency viewpoint, 20 weight% or less is preferable, More preferably, it is 18 weight% or less. From these viewpoints, the content of the component (A) is preferably 2 to 20% by weight, more preferably 4 to 18% by weight.

Examples of branched chain fatty acids include saturated or unsaturated branched chain fatty acids having 8 to 22 carbon atoms. From the viewpoint of foamability after application and preparation stability, branched chain saturated fatty acids having 8 to 22 carbon atoms can be preferably used. Specifically, isocaprilic acid, isoperargonic acid, isocaprinic acid, isoundacanoic acid, isolauric acid, isotridecylic acid, isomyristinic acid, isopentadecylic acid, isopalmitic acid, isomalgaric acid, isostearic acid, isonononadecanoic acid, isoarachidic acid, iso Examples include heneicosanoic acid and isobehenic acid. One of these components may be used alone, or two or more thereof may be used in appropriate combination. However, in this invention, the branched fatty acid which is (B) component is a C12-C18 branched saturated fatty acid. As a suitable component (B), it is preferable to use isolauric acid, isomyristic acid, isopalmitic acid, and isostearic acid, and it is more preferable to use isostearic acid. In the present invention, the branched fatty acid as the component (B) includes at least one selected from the group consisting of isolauric acid, isomyristic acid, isopalmitic acid, and isostearic acid.

  The content of the component (B) is not particularly limited as long as the desired effect is sufficiently imparted, but is usually preferably 0.5% by weight or more, more preferably 1 in the composition from the viewpoint of foaming. % By weight or more. Moreover, from a viewpoint of a usability | use_condition, 18 weight% or less is preferable, More preferably, it is 16 weight% or less. From these viewpoints, the content of the component (B) is preferably 0.5 to 18% by weight, more preferably 1 to 16% by weight.

  In the composition, the content ratio of the component (A) and the component (B) is preferably adjusted within a range of A: B = 4: 1 to 1: 4 as a weight ratio. Thereby, the cloudiness by the precipitation of the fatty acid at the time of low-temperature storage can be suppressed, and the outstanding formulation stability that transparency is maintained can be provided.

  Examples of the organic amine of component (C) include monoethanolamine, diethanolamine, triethanolamine, trimethylamine, and triethylamine. One of these components may be used alone, or two or more thereof may be used in appropriate combination. As a suitable component (C), it is preferable to use triethanolamine from the viewpoint of maintaining transparency during low-temperature storage.

  The content of the component (C) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 3% by weight or more is preferable in the composition from the viewpoint of transparency, and more preferably 4% by weight. % Or more. Moreover, from a viewpoint of a usability | use_condition, 34 weight% or less is preferable, More preferably, it is 32 weight% or less. From these viewpoints, the content of the component (C) is preferably 3 to 34% by weight, more preferably 4 to 32% by weight.

  The amount of the component (C) used for neutralizing the component (A) and the component (B) is not particularly limited as long as the fatty acid can be sufficiently converted into an organic amine salt, but the viewpoint of maintaining transparency. Therefore, it is preferable to neutralize by using 1.3 to 1.7 mol of component (C) with respect to 1 mol of fatty acid, and more preferably 1.4 to 1.6 mol. When the component (C) is less than 1.3 mol, neutralization is insufficient and white turbidity occurs at low temperatures, which is not preferable. Moreover, even when it is used in an amount of more than 1.7 mol, it is not preferable because an effect higher than the desired effect cannot be expected and there is a possibility of irritation.

  In addition, in order to contain the organic amine salt of a fatty acid in the transparent gel-like shaving composition of the present invention, a fatty acid and an organic amine may be blended in advance as an organic amine salt of a fatty acid, An organic amine may be blended to form an organic amine salt of a fatty acid in the composition.

  Examples of the cellulose thickener as component (D) include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose ethyl ether, carboxymethyl cellulose, cationized cellulose, and crystalline cellulose. it can. One of these components may be used alone, or two or more thereof may be used in appropriate combination. As a suitable component (D), methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, from the viewpoint of suppressing dripping and imparting excellent adhesion, and from the viewpoint of maintaining a transparent gel shape, Hydroxyethyl cellulose ethyl ether is preferably used, and among them, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose are more preferably used.

  The content of the component (D) is not particularly limited as long as the desired effect is sufficiently imparted. However, in general, from the viewpoint of suppressing dripping and providing an excellent adhesion feeling, the content of component (D) is 0. 5 weight% or more is preferable, More preferably, it is 1 weight% or more. Moreover, from a viewpoint of formulation stability, 3 weight% or less is preferable, More preferably, it is 2 weight% or less. From these viewpoints, the content of the component (C) is preferably 0.5 to 3% by weight, more preferably 1 to 2% by weight.

  The water of component (E) is not particularly limited as long as it can be used as a cosmetic raw material, but purified water is usually used. The content of water in the present invention is preferably adjusted in the range of 20 to 90% by weight, more preferably 30 to 85% by weight in the composition from the viewpoint of forming a transparent gel.

  In addition, the transparent gel-like shaving composition of the present invention can contain (F) a hydrocarbon oil from the viewpoint of further improving the formulation stability during low-temperature storage. Specific examples of the component (F) include liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, squalane, polybutene, and petrolatum. One of these components may be used alone, or two or more thereof may be used in appropriate combination. As a suitable (F) component, it is preferable to use liquid paraffin, squalane, and petroleum jelly from a viewpoint of formulation stability.

  The content of the component (F) is not particularly limited as long as the desired effect is sufficiently imparted. However, from the viewpoint of formulation stability, the content is preferably 0.1% by weight or more, more preferably. Is 0.5% by weight or more. Moreover, from a viewpoint of a usability | use_condition, 5 weight% or less is preferable, More preferably, it is 2 weight% or less. From these viewpoints, the content of the component (F) is preferably 0.1 to 5% by weight, more preferably 0.5 to 2% by weight.

  In the transparent gel-like shaving composition of the present invention, in addition to the above-described components, components usually used in cosmetics can be appropriately blended depending on the purpose as long as the effects of the present invention are not impaired. . For example, anionic surfactants other than fatty acid salts, cationic surfactants, nonionic surfactants, anionic water-soluble polymers, cationic water-soluble polymers, amphoteric water-soluble polymers, animal and plant derived fats and oils, Examples of extracts derived from animals and plants, moisturizers, refreshing agents, ultraviolet absorbers, anti-inflammatory agents, metal sequestering agents, vitamins, antioxidants, antiseptic / bactericidal agents, pH adjusters, antioxidants, coloring agents, various fragrances, etc. can do.

  Further, the method for using the transparent gel-like shaving composition of the present invention is not particularly limited, but the composition is applied to the skin in a gel-like form, and then using a hand and / or a foaming brush. A method of shaving the eyelid after foaming the applied composition can be preferably exemplified. As a result, it provides excellent adhesion when applied, provides a sufficient steaming effect, and can be shaved without clogging the razor by bubbling, preventing loss of razor such as congestion and tingling after shaving. can do.

  Although the foaming brush used will not be specifically limited if it is a brush which can foam a gel dosage form, The brush by which one side became a bunch of hair is mentioned. Specifically, a brush used for barber, a brush used for lathering soap at the front face, and the like can be exemplified. Moreover, the hair used as a hair bundle will not be specifically limited if it does not give physical irritation | stimulation with respect to skin, For example, hair, such as horse hair, pig hair, a chemical fiber, or these mixed hair, is illustrated. be able to.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. The blending amount represents “% by weight” unless otherwise specified. In the table, POE is an abbreviation for polyoxyethylene, and the number of moles of POE added is shown in parentheses.

(Sample preparation 1)
According to the composition described in Table 1 and Table 2, the transparent gel-like shaving compositions of Examples 1 to 5 and Comparative Examples 1 to 5 were respectively prepared according to conventional methods and subjected to the following evaluation. The results are shown in Table 1 and Table 2, respectively.

(Test Example 1: Evaluation of formulation stability (storage stability at low temperature))
Each sample of the example and the comparative example was sealed in a 50 mL transparent sample tube and stored in a thermostatic bath at −3 ° C. for 7 days. Subsequently, each sample was taken out from the thermostat, and the state of the system after being left for 6 hours under a constant temperature and humidity of 23 ° C. and a humidity of 60% was visually evaluated according to the following evaluation criteria.

<Evaluation criteria for formulation stability>
◎: No change immediately after production ○: Slight precipitation of fatty acid salt is observed, but when it is returned to room temperature, it becomes a transparent gel Δ: Precipitation of fatty acid salt is observed, white turbidity occurs, even if it is returned to room temperature No change in state ×: White turbidity occurs immediately after production, is not transparent, and does not reach evaluation

(Test Example 2: Evaluation of feeling during application)
About 20 male specialized panels who usually shave with a razor, each sample of Example and Comparative Example was applied, and about the dripping at the time of application, a feeling of adhesion, and the steaming effect after application The sensory evaluation was performed according to the following evaluation criteria.

<Evaluation criteria for adhesion>
◎: More than 16 out of 20 people answered that there was no dripping and excellent feeling of adhesion ○: 11 to 15 out of 20 people answered that there was no dripping and excellent feeling of adhesion Δ: 6 to 10 out of 20 people Answer: If there is no dripping and excellent adhesion feeling ×: 5 or less of 20 people answered that there is no dripping and excellent adhesion feeling

<Evaluation criteria for steaming effect>
◎: More than 16 out of 20 responded that the steaming effect was sufficient ○: 11-15 out of 20 responded that the steaming effect was sufficient △: 6-10 out of 20 were sufficiently steamed Answer that there is ×: 5 or less of 20 people answered that the steaming effect is sufficient

(Test Example 3: Evaluation of foaming)
After the evaluation of Test Example 2 with the panel, the coated sample was foamed using a foaming brush, and the foaming was subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for foaming>
A: Reply if 16 or more out of 20 were excellent in foaming ○: Reply if 11-15 out of 20 were excellent in foaming Δ: Reply if 6-10 out of 20 were excellent in foaming ×: 5 out of 20 Respondents who are excellent in foaming

(Test Example 4: Evaluation of shaving)
After the evaluation of Test Example 3, the panel was actually shaved with a razor, and the clogging of the razor was subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for shaving>
◎: More than 16 out of 20 responded that the razor was not clogged and could shave the shave ○: 11 to 15 out of 20 responded that the razor was not clogged and the sword could be shaved △: 20 6 to 10 people answered that they could shave their razors without clogging ×: 5 or less of 20 people answered that they could shave their razors without clogging razors

(Test Example 5: Evaluation of skin condition after shaving)
After the evaluation of Test Example 4 with the panel, the sample was rinsed with warm water, and the skin condition after shaving was subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for shaving>
◎: More than 16 out of 20 responded that they did not lose razor such as congestion or tingling feeling ○: 11-15 out of 20 responded that they did not lose razor such as congestion or tingling △: 6 to 20 out of 20 persons 10 respondents who have no razor loss such as congestion or tingling sensation ×: 5 or less of 20 respondents who have no razor losing feeling such as congestion or tingling

  From the results shown in Tables 1 and 2, the transparent gel-shaving composition obtained in each example is more stable in storage at low temperatures than those obtained in each Comparative Example. It turns out that it is excellent. Moreover, since it is excellent in the close_contact | adherence feeling at the time of application | coating and does not sag, it turns out that the sufficient steaming effect of the soot is acquired. In addition, it is excellent in foaming and can shave without clogging, and it can be seen that the skin after shaving does not lose razor such as congestion and tingling.

  Moreover, the composition for transparent gel shaving of Examples 6-9 shown below was used for the same test as the above. The content is% by weight.

(Example 6)
Myristic acid 4.5
Palmitic acid 3.5
Isolauric acid 1.0
Triethanolamine 8.5
Hydroxyethyl cellulose 1.0
Polyoxyethylene (20) oleyl ether 4.0
Polyoxyethylene (13) stearyl ether 2.0
Glycerin 2.0
Sorbit liquid 1.0
Liquid paraffin 0.8
Purified water 71.7
Total 100.0

(Example 7)
Myristic acid 2.5
Palmitic acid 1.5
Isomyristic acid 4.0
Triethanolamine 7.6
Hydroxyethyl cellulose 1.0
Polyoxyethylene (20) oleyl ether 4.0
Polyoxyethylene (13) stearyl ether 2.0
Glycerin 2.0
Sorbit liquid 1.0
Liquid paraffin 1.2
Purified water 73.2
Total 100.0

(Example 8)
Lauric acid 0.3
Myristic acid 2.8
Palmitic acid 1.9
Isopalmitic acid 3.0
Triethanolamine 7.3
Hydroxypropyl cellulose 2.0
Polyoxyethylene (20) oleyl ether 4.0
Polyoxyethylene (13) stearyl ether 2.0
Glycerin 2.0
Sorbit liquid 1.0
Squalane 0.5
Liquid paraffin 1.0
Purified water 72.2
Total 100.0

Example 9
Lauric acid 0.5
Myristic acid 3.5
Palmitic acid 3.0
Isostearic acid 2.0
Triethanolamine 8.1
Hydroxypropyl methylcellulose 1.0
Polyoxyethylene (20) oleyl ether 4.0
Polyoxyethylene (13) stearyl ether 2.0
Glycerin 2.0
Sorbit liquid 1.0
Liquid paraffin 0.5
Vaseline 0.5
Purified water 71.9
Total 100.0

  As a result of the test, all of Examples 6 to 9 were free from white turbidity due to fatty acids and excellent in storage stability at low temperatures. In addition, there is no dripping at the time of application, good adhesion, sufficient steaming effect is obtained, excellent foaming after application, it is possible to shave without clogging of the razor, and congestion and tingling after shaving It was intended to prevent razor loss such as feeling.

Claims (6)

Gel-like
(A) a linear fatty acid, (B) a branched chain fatty acid, (C) an organic amine, (D) a cellulose-based thickener, and (E) water.
The (A) linear fatty acid is a linear saturated fatty acid having 12 to 22 carbon atoms,
The (A) linear fatty acid contains both myristic acid and palmitic acid,
(B) the branched chain fatty acids, Ri branched chain saturated fatty der of 12 to 18 carbon atoms,
The (B) branched chain fatty acid contains at least one selected from the group of isolauric acid, isomyristic acid, isopalmitic acid, isostearic acid,
In the transparent gel-like shaving composition, the content of the (A) linear fatty acid is 2% by weight or more and 20% by weight or less, and the content of the (B) branched fatty acid is 0.5% by weight or more, 18% by weight or less, the content of (C) the organic amine is 3% by weight or more and 34% by weight or less, and the content of the (D) cellulosic thickener is 0.5% by weight or more, 3% or less. or less by weight%, the (E) a water content of 20 wt% or more, 90 wt% or less der Ru transparent gel-like shaving composition. The transparent gel-like shaving composition according to claim 1, wherein the weight content ratio of the component (A) to the component (B) is A: B = 4: 1 to 1: 4. (C) A component is a triethanolamine, Comprising: The neutralization degree with respect to a fatty acid is 1.3-1.7 equivalent, The composition for transparent gel-like shavings of Claim 1 or 2 characterized by the above-mentioned. object. The transparent gel-like shaving composition according to any one of claims 1 to 3 , wherein the component (D) contains at least one selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methylcellulose. Ri Na further contain (F) a hydrocarbon oil,
In a clear gel-like shaving composition, the (F) content of the hydrocarbon oil is 0.1 wt% or more, the transparent gel-like whiskers of any one of 5 wt% or less der Ru claims 1-4 Shaving composition. A shaving method, comprising: applying the transparent gel-like shaving composition according to any one of claims 1 to 5 to the skin, foaming with a hand and / or a foaming brush, and then shaving the eyelid.