JP2003034627A - Preshave cosmetics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a preshave cosmetics that dose not have a tendency to decrease viscosity with time and change in temperature. SOLUTION: The preshave cosmetics is a cream like preshave cosmetics containing 0.1-10 weight % of fatty oil, 2-8 weight % of carbon hydrogen, 0.5-8 weight % of fatty acid, 0.2-1.6 weight % of alkali that neutralizes the fatty acid, 0.1-2 weight % of oleophilic nonion surfactant, and 0.5-3 weight % of higher alcohol, and it is solved by the preshave cosmetics that further contains 0.2-4 weight % of insoluble powder having a particle size of 0.01-10 μm and 0.2-1 weight % of emulsified stabilizing agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preshave cosmetic composition, and more specifically, the present invention relates to a creamy preshave cosmetic composition containing no hydrophilic nonionic surfactant and containing an insoluble powder. More specifically, the present invention relates to a preshave cosmetic material used when shaving with a razor blade.

[0002]

2. Description of the Related Art Conventionally, a shaving agent has been used for shaving at a barber shop or at home in order to soften the beard and protect the skin. Various kinds of such shaving agents are commercially available, but as an example, it is packed in a can together with a shaving powder that is in powder form and melts in hot water when used and foamed with a brush, a propellant. There are shaving foam that is sprayed at the time of use and becomes foamy, or shaving cream that is creamy and used as it is, reducing the friction between the razor blade surface and the skin when shaving a beard It is effective in making it easier to shave. There are also pre-shave cosmetics such as pre-shaving lotions and pre-shaving creams for softening the beard sufficiently to make it easier to shave before using the shaving powder, shaving foam or shaving cream as described above. . If such a pre-shaving lotion or pre-shaving cream is applied to the face in advance, a steaming towel is put on the face and left for about 5 minutes, the beard can be softened. Then, the shaving powder, shaving foam or shaving cream as mentioned above is applied to the face to shave the beard.

On the other hand, in order to improve the feel of the skin when shaving and to prevent the damage to the skin, a preshave cosmetic as described above containing an insoluble powder has been developed. Examples of preshave cosmetics containing such an insoluble powder include, for example, Japanese Patent Publication No. 53-4357.
7, Japanese Patent Publication No. 51-19137, Japanese Patent Publication No. 2-28
9508, published patent 7-36331, published patent 7-
206640, JP-A-7-330540, JP-A-9-157143, JP-A-10-95720 and the like.

However, none of the above patents relates to an electric razor lotion or a lotion, and there is no disclosure about blending an insoluble powder into a cream used when shaving with a razor blade. Even when shaving with a razor blade, it is conventionally required to soften the beard and make it easier to shave with a razor, and to smooth the operation of the razor to improve the comfort of shaving. The fact that the insoluble powder was not mixed with the cream was that when the insoluble powder was mixed with the creamy preshave cosmetic,
The shaving comfort of the beard is certainly improved, but in general, when an insoluble powder is mixed in a solution, particularly an emulsion solution, the surface tension of the insoluble powder decreases, and the pre-shave cosmetics applied to the face run off the face. This is considered to be because it becomes easy and lacks practicality. Especially in the case of shaving creams and pre-shave cosmetics where the product is in the form of a cream and is used as it is, the viscosity of the product tends to decrease with the passage of time even if it is prescribed to have a desired viscosity at the time of shipment. . Also, in the case of creamy products, the viscosity is greatly affected by the ambient temperature, so care is taken to maintain the desired viscosity by adjusting the moisture content according to the season. If the consideration of the temperature control is insufficient, a remarkable decrease in viscosity will occur. And especially in barbershops, the use of shaving cream and preshave cosmetics whose viscosities have been lowered is disliked.

[0005]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a creamy pre-shave cosmetic which contains an insoluble powder and does not easily decrease in viscosity even when subjected to a lapse of time or a change in temperature.

[0006]

As a result of various studies to solve the above problems, the inventor of the present application has found that 0.1 to 10% by weight of fatty oil, 2 to 8% by weight of hydrocarbons, 0. 5-8 wt% fatty acid, 0.2-1.6 wt% alkali that neutralizes the fatty acid, 0.1-2 wt% lipophilic nonionic surfactant and 0.5-3 wt% higher. A creamy pre-shave cosmetic composition containing alcohols, wherein the pre-shave cosmetic composition further comprises 0.1 to 4% by weight and 0.2 to 1% by weight of insoluble powder having a particle size of 0.01 to 10 μm. It has been found to be solved by providing a preshave cosmetic characterized by containing an emulsion stabilizer. The present invention will be described in detail below.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Fatty Oil The preshave cosmetic composition of the present invention contains a fatty oil. This fatty oil is mixed and stirred with water and a surfactant described later to form an emulsion. The fatty oil used in the present invention is not particularly limited as long as it does not adversely affect the human body. Suitable fatty oils in the present invention include isostearyl myristate,
Dry oils such as linseed oil, eno oil, tung oil, hemp oil and soybean oil, sesame oil, rapeseed oil, cottonseed oil, rice oil, and semi-dry oils such as corn oil, olive oil, camellia oil, peanut oil and castor oil. Non-drying oil, fish oil such as sardine oil and herring oil, liver oil such as cod oil, shark oil and squid oil, marine animal oil such as whale oil and dolphin oil, freshwater animal oil such as crucian oil, carp oil and eel oil, and pupa oil And land-produced animal oil such as beef leg oil. The blending amount of this fatty oil is not particularly limited, but is preferably 0.1 to 10% by weight, more preferably 0.1 to 6% by weight, and most preferably 0.5 to 2% by weight. The preshave cosmetic composition of the present invention containing a fatty oil in the above range is in a creamy state with good spread, which enables comfortable shaving.

Hydrocarbons The preshave cosmetic composition of the present invention contains hydrocarbons such as liquid paraffin, petrolatum, squalane, paraffin wax, isoparaffin, ceresin, blistan, microcristan wax, squalane and vegetable squalane. . Among such hydrocarbons, liquid paraffin, squalane, and vegetable squalane are preferably used. The liquid paraffin is a hydrocarbon oil refined by washing a relatively light lubricating oil component such as a spindle oil fraction with sulfuric acid, and is composed of alkylnaphthenes. Squalane is a hydrocarbon oil stabilized by hydrogenating squalene, which is a hydrocarbon contained in deep-sea shark liver oil, and has a less oily feel than liquid hydrocarbon paraffin, which is the same hydrocarbon oil, and has a good feel. . Vegetable squalane is a hydrocarbon oil stabilized by hydrogenation of squalene in olive oil collected from olive fruits, and its raw material is different from that of squalane.
In the present invention, the blending amount of the hydrocarbons is not particularly limited, but the hydrocarbons are preferably contained in 2 to 8% by weight, more preferably 3 to 7% by weight, and most preferably 4 to 6% by weight. Has been.

Surfactant The preshave cosmetic composition of the present invention contains a surfactant in addition to the above fatty oil and hydrocarbons. By stirring and mixing this surfactant with fatty acids, hydrocarbons and water, an emulsion that can be easily applied to the skin can be obtained. In the present invention, the surfactant to be blended is not particularly limited, and as long as it does not cause a chemical reaction with other components of the preshave cosmetic composition of the present invention and has no adverse effect on the human body, a conventionally known surfactant. Can be used freely. Such suitable surfactants include polyoxyethylene sorbitan monostearate, polyoxyethylene oleyl ether, polyoxyethylene cetyl ether, polyoxyethylene sorbit tetraoleate, glyceryl monostearate, sorbitan monooleate, mono Examples thereof include sorbitan stearate. In the present invention, a lipophilic nonionic surfactant is preferably selected as the surfactant. Further, the blending amount of this surfactant is not particularly limited, but preferably 0.1 to 2% by weight, more preferably 0.4 to
1.5% by weight, optimally 0.3 to 0.7% by weight. A suitable emulsion can be obtained by blending the surfactant within the above range.

Higher Alcohol Further, the preshave cosmetic composition of the present invention contains a higher alcohol in addition to the above fatty oil, hydrocarbons and surfactant. By adding this higher alcohol, the preshave cosmetic composition of the present invention becomes creamy. The type of higher alcohol to be blended is not particularly limited, but examples of higher alcohols suitable for the present invention include hardened rapeseed alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol and myristyl alcohol.
In the present invention, the blending amount of the higher alcohol is not particularly limited, but this higher alcohol is preferably 0.5 to 5% by weight, more preferably 1 to 5% by weight in the preshave cosmetic of the present invention, and most preferably 1 to 5% by weight. Contains 1.2 to 3.5% by weight. By blending the higher alcohol in the above range, the preshave cosmetic composition of the present invention has an appropriate viscosity.

Insoluble Powder Further, the preshave cosmetic composition of the present invention further contains an insoluble powder. The preshave cosmetic composition of the present invention in which the insoluble powder is blended has good shaving comfort for the beard, and can be deeply shave without repeated shaving. The type of the insoluble powder to be blended in the present invention is not particularly limited, but it is preferable to selectively blend the insoluble powder that does not cause a decrease in viscosity of the preshave cosmetic. Examples of such insoluble powder include talc, kaolin, mica, zinc oxide, titanium oxide, magnesium oxide,
Examples thereof include silica, bentonite, alumina, magnesium stearate, zinc myristate, calcium carbonate, nylon, polyurethane, polyethylene, polypropylene, polystyrene, fluororesin, silicone resin and ceramics. These insoluble powders are blended in the preshave cosmetic composition of the present invention alone or in an appropriate combination.

The particle size of the insoluble powder is not particularly limited, but is preferably 0.1 to 10 μm, more preferably 0.1 to 1 μm.
It has become m.

In the present invention, the insoluble powder as exemplified above is optionally used, but among them, titanium oxide is preferably mixed. This titanium oxide is an ultrafine particle titanium oxide having an extremely small primary particle diameter of 0.01 to 0.03 μm, and when applied to the skin, it does not feel uncomfortable, does not interfere with the operation of the razor, and shaves smoothly. be able to. Further, as the insoluble powder, especially ceramic powder is also preferably used. This ceramic powder is obtained by sintering titanium, iron, lithium, cobalt, etc., and has a particle size of 10 μm.

The amount of the above-mentioned insoluble powder to be compounded is not particularly limited, but is preferably 0.1 to 1% by weight, and more preferably 0.2 to.
0.7 wt%, optimally 0.3 to 0.5 wt% is blended. The insoluble powder blended in the above range can provide a preshave cosmetic that is less likely to cause a decrease in viscosity with the passage of time and temperature changes.

Particularly, in the present invention, the weight ratio of the above-mentioned surfactant to the above-mentioned insoluble powder is 3 to 0.1: 1, further 2 to 0.2: 1, and optimally 1 to 0.5 :. It is preferably blended so as to be 1. As a result, it is possible to provide a preshave cosmetic that is less likely to cause a decrease in viscosity with the passage of time and temperature changes.

Since the above-mentioned insoluble powder easily aggregates, it is necessary to disperse the hydrocarbons well in advance by using a high-speed stirrer during production.

Fatty Acid Soap Component Further, the preshave cosmetic composition of the present invention further contains a fatty acid soap component. This fatty acid soap component is composed of a fatty acid and an alkali for neutralizing the fatty acid, and constitutes a fatty acid soap in the preshave cosmetics. By blending this fatty acid soap component, the beard tends to be softened. The total amount of fatty acid and alkali is not particularly limited, but preferably 0.2 to 20% by weight, more preferably 1 to 10% by weight, optimally 2 to 5% by weight. This allows the beard to be sufficiently softened to facilitate shaving.

Suitable fatty acids of the present invention include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, 12-hydroxystearic acid, isostearic acid, linoleic acid and ricinolenic acid. To be Among them, lauric acid, myristic acid, palmitic acid, stearic acid, behen (behenin)
Acids, oleic acid and isostearic acid are preferably used. In the present invention, these fatty acids are used alone or in appropriate combination.

The alkali suitable for the present invention includes
It is not particularly limited as long as it can neutralize the above fatty acids, but examples of suitable alkali include inorganic compounds such as potassium hydroxide and sodium hydroxide, L-arginine, aminomethylpropane, triethanolamine and basic compounds. Examples thereof include organic compounds such as amino acids.

In the present invention, the blending amount of the fatty acid soap component consisting of the above fatty acid and alkali is not particularly limited, but the blending amount of the fatty acid is preferably 0.1 to 20% by weight in the preshave cosmetic of the present invention, More preferably 1
10 wt%, optimally 2 to 5 wt% is blended. Also,
The amount of the alkali added is sufficient to neutralize the fatty acid. Suitably, the alkali is preferably 0.1 to 1% by weight, more preferably 0.1 to 0.6% by weight, optimally 0.2 to 0.4% by weight in the preshave cosmetic composition of the present invention.
It is compounded.

Optional Ingredients The preshave cosmetic composition of the present invention contains the above-mentioned components as essential components. The preshave cosmetic composition of the present invention is generally used in cosmetics in addition to the above-mentioned components. It is possible to optionally mix various components. Examples of such optional ingredients are listed below.

The preshave cosmetic of the present invention may further contain a moisturizer. Suitable humectants for the present invention include glycerin, 1,3-butylene glycol, sodium hyaluronate, urea, collagen, dipropylene glycol, propylene glycol and 1,2-pentanediol. By blending these moisturizers, it is possible to prevent the skin from drying after shaving.

The amount of the moisturizing agent contained in the preshave cosmetic composition of the present invention depends on the amount of the moisturizing agent to be blended, but the moisturizing agent is preferably 1 to 20% by weight, more preferably 3 to 10% by weight. %, Optimally 5 to 8% by weight. Specifically, for example, when glycerin is blended as a moisturizer, glycerin is preferably blended in an amount of 2 to 5% by weight. When sodium hyaluronate is added as a moisturizing agent, sodium hyaluronate is preferably added in an amount of 0.001 to 0.01% by weight. When urea is added as a moisturizer, the urea is preferably added in an amount of 0.5 to 4% by weight.

Botanical Moisturizers Further, the preshave cosmetic composition of the present invention further comprises coltsfoot, chamomile extract, mugwort extract, loofah extract,
You may further mix | blend the botanical moisturizer which consists of plant extracts, such as an aloe extract, a lavender extract, a birch extract, a rosemary extract, a kujin extract, a gall extract, a Japanese mustard extract, a horsetail extract, and a yeast extract. By blending these botanical moisturizers, it is possible to prevent the skin from drying after shaving.

When a vegetable moisturizer is added to the preshave cosmetic composition of the present invention, each of the vegetable moisturizers is preferably 0.01 to 3% by weight, more preferably 0.03 to 10% by weight.
2% by weight, optimally 0.05 to 1% by weight, is preferably blended. When a plurality of types of botanical moisturizers are combined and blended, the total content of these botanical moisturizers is preferably 0.05 to 5% by weight, further 0.1 to 1% by weight. %, Most preferably 0.5 to 1% by weight.

Other additives commonly used in cosmetics, for example, natural flavors such as orange oil, lavender oil and peppermint oil, and flavoring agents such as mixed flavors; tetrasodium edetate and tetrasodium hydroxyethanediphosphonate, etc. Chelating agents; preservatives such as methyl paraoxybenzoate, propyl paraoxybenzoate, sodium methyl paraoxybenzoate, sodium dehydroacetate, and phenoxyethanol can be optionally mixed.

Further, the preshave cosmetic of the present invention further contains an emulsion stabilizer so that the viscosity of the cream containing the insoluble powder can be maintained for a long period of time. The type of emulsion stabilizer blended in the present invention is not particularly limited,
As a suitable emulsion stabilizer, an emulsion stabilizer such as hydroxyethyl cellulose, hydroxypropyl cellulose, carboxyvinyl polymer, dextrin myristate, dextrin palmitate, starch / sodium acrylate graft copolymer and the like can be arbitrarily blended. . In the present invention, it is particularly preferable to use two kinds of these emulsion stabilizers. The starch-sodium acrylate graft copolymer is commercially available from Sanyo Kasei Co., Ltd. under the product name Sunfresh ST-100MPS.

The amount of the emulsion stabilizer blended in the preshave cosmetic composition of the present invention is preferably 0.01 to 3% by weight, more preferably 0.03 to 2% by weight, and most preferably 0.05 to 1% by weight.
Is preferred. A particularly preferred combination of emulsion stabilizers is 0.01 to 0.1% by weight starch-sodium acrylate graft copolymer and 0.1 to 0.3% by weight dextrin palmitate.

Further, in the present invention, the surfactant and the emulsion stabilizer are preferably blended in a weight ratio of 0.4 to 1: 1.

The preshave cosmetic composition of the present invention is prepared by mixing and stirring the respective components to be blended under heating, for example, a predetermined amount of fatty oil, surfactant, hydrocarbons, insoluble powder, moisturizing agent. About 80 agents and optional ingredients
What was heated and melted at 80 ℃ was heated to about 80 ℃ and gradually added with dissolved optional ingredients, stirring and mixing was continued for about 20 minutes, heating was stopped, and gradually cooled. When about 40 ° C. is reached, a vegetable moisturizer is added, and the mixture is cooled to room temperature with further stirring.

The preshave cosmetic composition of the present invention preferably has a pH of 7.0 to 8.5, more preferably 7.4.
.About.8.2, optimally 7.6 to 7.9.
The pH is adjusted, for example, by changing the blending amount of fatty acid and alkali. When the pH is adjusted within the above range, a product with a good emulsified state can be obtained.

The preshave cosmetic composition of the present invention has a viscosity of 6000 to 10000 mPa · s, and further 7000.
~ 9000 mPa · s, optimally 7700-8300 m
It is adjusted to be Pa · s. As a result, particularly good preshave cosmetics can be obtained when shaving with a razor blade.

Examples of the present invention will be shown below. The formulations shown below are examples of the present invention, and the present invention is not limited to these examples.

Example 1 Liquid paraffin 4 parts by weight Olive oil 1.0 parts by weight Vegetable squalane 0.1 parts by weight Dextrin palmitate 0.2 parts by weight Lipophilic glyceryl monostearate 0.3 parts by weight Hardened rapeseed oil 1. 5 parts by weight Titanium oxide 0.4 parts by weight Stearic acid 4.0 parts by weight Concentrated glycerin 4.0 parts by weight Potassium hydroxide 0.8 parts by weight Sodium hyaluronate 0.01 parts by weight Urea 2.5 parts by weight Horsetail extract 0. 1 part by weight Sanshishi extract 0.1 part by weight sodium chloride 0.2 part by weight tetrasodium hydroxyethanediphosphonate 0.3 part by weight methyl sodium paraoxybenzoate 0.4 part by weight Starch-sodium acrylate graft copolymer
0.02 parts by weight 1,2-pentanediol 1.0 part by weight Purified water 79 parts by weight

Example 2 Liquid paraffin 4 parts by weight Olive oil 1.0 parts by weight Vegetable squalane 0.1 parts by weight Dextrin palmitate 0.2 parts by weight Lipophilic glyceryl monostearate 0.3 parts by weight Hardened rapeseed oil 1. 5 parts by weight Titanium oxide 0.4 parts by weight Stearic acid 4.0 parts by weight Concentrated glycerin 4.0 parts by weight Potassium hydroxide 0.8 parts by weight Sodium hyaluronate 0.01 parts by weight Urea 2.5 parts by weight Horsetail extract 0. 1 part by weight Sanshishi extract 0.1 part by weight sodium chloride 0.2 part by weight tetrasodium hydroxyethanediphosphonate 0.3 part by weight methyl sodium paraoxybenzoate 0.4 part by weight hydroxyethyl cellulose 0.02 part by weight 1,2-pentane Diol 1.0 part by weight Purified water 79 parts by weight

Example 3 Liquid paraffin 4 parts by weight Olive oil 1.0 parts by weight Vegetable squalane 0.1 parts by weight Dextrin palmitate 0.2 parts by weight Lipophilic glyceryl monostearate 0.3 parts by weight Hardened rapeseed oil 1. 5 parts by weight Ceramic powder 0.4 parts by weight Stearic acid 4.0 parts by weight Concentrated glycerin 4.0 parts by weight Potassium hydroxide 0.8 parts by weight Sodium hyaluronate 0.01 parts by weight Urea 2.5 parts by weight Horsetail extract 0. 1 part by weight Sanshishi extract 0.1 part by weight sodium chloride 0.2 part by weight tetrasodium hydroxyethanediphosphonate 0.3 part by weight methyl sodium paraoxybenzoate 0.4 part by weight hydroxyethyl cellulose 0.02 part by weight 1,2-pentane Diol 1.0 part by weight Purified water 79 parts by weight

The following preshave cosmetics were prepared which were outside the scope of the present invention. Comparative Example 1 Liquid paraffin 4 parts by weight Olive oil 1.0 parts by weight Vegetable squalane 0.1 parts by weight Lipophilic glyceryl monostearate 0.3 parts by weight Hardened rapeseed oil 1.5 parts by weight Ceramic powder 0.4 parts by weight stearin Acid 4.0 parts by weight Concentrated glycerin 4.0 parts by weight Potassium hydroxide 0.8 parts by weight Sodium hyaluronate 0.01 parts by weight Urea 2.5 parts by weight Horsetail extract 0.1 parts by weight Sanshishi extract 0.1 parts by weight Sodium chloride 0.2 parts by weight tetrasodium hydroxyethanediphosphonate 0.3 parts by weight methyl sodium paraoxybenzoate 0.4 parts by weight 1,2-pentanediol 1.0 parts by weight Purified water 79 parts by weight

The preshaving agent of Examples 1 to 3 and the preshaving agent of Comparative Example 1 were used as a preshaving agent for shaving with a razor blade. As a result, the pre-shaving agent according to the present invention had an appropriate viscosity and could be comfortably shaving without dripping even when applied to the face, but the pre-shaving agent of the comparative example had an appropriate viscosity. It did not have sufficient viscosity and dripping from the face.

Continued front page    F-term (reference) 4C083 AA081 AA122 AB031 AB032                       AB102 AB171 AB211 AB212                       AB221 AB241 AB242 AB321                       AB431 AC011 AC022 AC071                       AC122 AC241 AC242 AC312                       AC421 AC422 AC682 AC892                       AD021 AD071 AD091 AD151                       AD242 AD281 AD282 AD332                       BB01 BB04 BB13 BB23 CC21                       DD31 EE10

Claims (5)

[Claims] 1. 0.1 to 10% by weight of fatty oil, 2 to 8% by weight of hydrocarbons, 0.5 to 8% by weight of fatty acid, 0.2 to 1.6% by weight of neutralizing the fatty acid. % Alkali, 0.
1-2% by weight of lipophilic nonionic surfactant and 0.5
A creamy pre-shave cosmetic composition containing ~ 3% by weight of higher alcohols, wherein the pre-shave cosmetic composition is
A preshave cosmetic composition further comprising 0.1 to 4% by weight of an insoluble powder having a particle size of 0.01 to 10 μm and 0.2 to 1% by weight of an emulsion stabilizer. 2. The insoluble powder is talc, kaolin,
Selected from the group consisting of mica, zinc oxide, titanium oxide, magnesium oxide, silica, bentonite, alumina, magnesium stearate, zinc myristate, calcium carbonate, nylon, polyurethane, polyethylene, polypropylene, polystyrene, fluororesins, silicone resins and ceramics The pre-shave cosmetic composition according to claim 1, wherein the pre-shave cosmetic composition is one kind or two or more kinds. 3. The surfactant is selected from the group consisting of lipophilic glyceryl monostearate, glyceryl monooleate and glyceryl monomyristate.
The preshave cosmetics according to claim 1 or 2, wherein the preshave cosmetics are of more than one type. 4. The emulsion stabilizer is two kinds selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl cellulose, carboxyvinyl polymer, dextrin myristate, dextrin palmitate, and starch-sodium acrylate graft copolymer. The preshave cosmetic composition according to any one of claims 1 to 3, characterized in that. 5. The preshave makeup according to claim 1, wherein the surfactant and the emulsion stabilizer are mixed in a weight ratio of 0.4 to 1: 1. Fee.