JP5279221B2 - Warm skin cosmetics - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warm-feeling skin cosmetic which exhibits a warm-feeling effect, can impart the sufficient warm-feeling to skin by the contact with the skin, is excellent in the stability with time and in use feeling, especially securing the stability for a long period of time even in the storage under a high temperature. <P>SOLUTION: This warm-feeling skin cosmetic is a creamy or gel-formed cosmetic developing the warm-feeling by the contact with the skin, and comprises a hydration heat-generating inorganic powdery material, a cationic polymer, an oil component, a non-ionic surfactant and a non-aqueous medium. The non-aqueous warm-feeling skin cosmetic is useful for a creamy base cosmetic, a skin-caring material, a facial wash, etc. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to warm skin cosmetics such as skin care creams and facial cleansers, which have excellent usability and moderate warm feeling when applied to the skin, and are excellent in durability during storage.

When a heat generating action is imparted to the cosmetic, effects such as a good feeling of use based on warmth, a blood circulation promoting effect, an improved cleaning action, and a medicinal effect can be expected. For this reason, various cosmetics having a warm feeling have been proposed.
Patent Document 1 proposes a method in which polyhydric alcohols that generate heat upon contact with water and skin stimulants such as pepper tincture and camphor are used in combination.
However, in the above method using only the heat of hydration reaction of polyhydric alcohols, the calorific value is insufficient.
Therefore, in Patent Document 2, etc., a cosmetic is proposed in which a hydrated exothermic inorganic powder that generates heat upon reaction with water such as zeolite, activated alumina, silica gel, etc. is combined with a non-aqueous medium.
In addition, as a technique for stabilizing such inorganic powder in a non-aqueous medium, for example, Patent Document 3 describes stabilization by adjusting the viscosity of a system using a thickener such as a polymer compound. Techniques to make it have been proposed.
However, the techniques listed in this document are not sufficient in stability. Therefore, Patent Document 4 proposes a technique of blending a carboxyvinyl polymer and / or a fatty acid soap in order to further improve the stability.
By utilizing the technique described in Patent Document 4, it has become possible to stabilize the product to the extent that it can be marketed. However, products using this technology are not always sufficiently stable at a high temperature of about 50 ° C., and further development of stabilization technology is desired.
Moreover, in order to further improve the feeling of use of cosmetics, it is usually desired to add an oil component. However, even when using thickeners such as polymer compounds described in Patent Documents 3 and 4, oil components, and nonionic surfactants used as normal emulsifiers for oil components, There is a tendency for the stability at to deteriorate.
JP 58-113113 A U.S. Pat. No. 3,250,680 JP 11-309365 A JP 2005-89365 A

  The subject of the present invention is that sufficient warmth is obtained by bringing it into contact with the skin, and it is excellent in stability over time and feeling in use. In particular, long-term stability can be ensured even in storage at high temperatures. It is providing the warm skin cosmetics which show a warm feeling effect | action.

As a result of intensive studies to solve the above problems, the present inventors have found that, instead of the thickener in the non-aqueous warm sensation described in Patent Documents 3 and 4, a cationic polymer, an oil The present invention has been completed by finding that a combination of a component and a nonionic surfactant can be combined to maintain a warm feeling and improve the feeling of use and stability at high temperatures.
That is, according to the present invention, a cream-like or gel-like cosmetic that produces a warm feeling upon contact with the skin, comprising a hydrated exothermic inorganic powder, a cationic polymer, an oil component, a nonionic interface There is provided a non-aqueous warm skin cosmetic comprising an active agent and a non-aqueous medium.

The warm skin cosmetic of the present invention comprises a hydrated exothermic inorganic powder, a cationic polymer, an oil component, a nonionic surfactant and a nonaqueous medium, and has a nonaqueous cream or gel form. Therefore, a good feeling of use and a warm feeling can be given by applying to skin. In addition, compared to conventional cosmetics having a warming effect, excellent stability is achieved by suppressing sedimentation of the hydrated exothermic inorganic powder and liquid separation of the preparation over a long period of time even at a high temperature of about 50 ° C. Can be shown.
Therefore, the warm skin cosmetics of the present invention are useful for various cosmetics such as creamy basic cosmetics, skin care materials, and facial cleansers.

Hereinafter, the present invention will be described in more detail.
The warm sensation skin cosmetic of the present invention is applied to the skin and brought into contact with the skin by massage or the like, so that the contained hydrated exothermic inorganic powder hydrates with moisture in the skin and the like. Shows a warm feeling. The viscosity of the warm skin cosmetic is usually preferably about 200,000 mPa · s to 500,000 mPa · s in order to prevent sedimentation or the like in the preparation of the hydrated exothermic inorganic powder and to suppress deterioration of the feeling of use.
In the warm skin cosmetics of the present invention, the non-aqueous system is not intended to exclude even trace amounts of water inevitably contained in each component used, and is usually less than 1% by weight in the warm skin cosmetics, In particular, even if it contains 0.1% by mass or less, further 0.01% by mass or less of water, it is included in the non-aqueous range in the present invention.

The heat of hydration of inorganic powder used in the present invention, for example, activated zeolite _{(M 2 / n O · Al} 2 O 3 · xSiO 2 · yH 2 O: M is a metal ion, n represents the valence, x, y is an arbitrary constant), magnesium sulfate, calcium sulfate, aluminum sulfate, ferrous sulfate, alum, anhydrous silicic acid, calcium chloride, magnesium chloride, zinc chloride, ferric chloride, sodium carbonate, potassium carbonate or these Inorganic powders selected from the group consisting of these are mentioned, and the use of activated zeolite is particularly preferred.
The activated zeolite is a zeolite adjusted to pH 10 or less, preferably pH 8.0 to 10.0, and is obtained by, for example, a method of treating the zeolite with an ion exchange resin or neutralizing with an acid. Can do. Moreover, a commercial item can also be used, for example, brand name "Zeoram A-4 LPH" (made by Tosoh Corporation) etc. are mentioned.
When the pH of the activated zeolite exceeds 10, there is a possibility that discoloration over time cannot be suppressed. Here, the pH of the activated zeolite means a value measured by adding 20 times the amount of water to the activated zeolite and mixing them.
The particle size of the activated zeolite can be appropriately selected according to the type of the target warm skin cosmetic, the viscosity thereof, and the like, but is usually preferably 50 μm or less in order to improve the feeling of use and heat generation.
The blending ratio of the hydrated exothermic inorganic powder can be appropriately selected according to the type of the target warm skin cosmetic. In order to obtain a sufficient warm feeling and not deteriorate the feeling of use, the amount is usually 5 to 40% by weight, particularly preferably 5 to 30% by weight, based on the total amount of warm skin cosmetics.

The cationic polymer used in the present invention is a component that maintains the stability of the hydrated exothermic inorganic powder in the preparation, particularly at a high temperature for a long period of time, and contributes to improving the feeling of use of the preparation. Examples thereof include polyquaternium already marketed for cosmetics and medical raw materials having a quaternary amino group, and cationic polymers derived from natural products.
Examples of polyquaternium include polyquaternium-5, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-16, polyquaternium-22, polyquaternium-28, polyquaternium-32, polyquaternium-33, polyquaternium-37, and polyquaternium-39. Polyquaternium-43, polyquaternium-44, polyquaternium-46, polyquaternium-47, polyquaternium-49, polyquaternium-51, polyquaternium-52, polyquaternium-53, polyquaternium-55, polyquaternium-57, polyquaternium-61, polyquaternium-61, polyquaternium-64, polyquaternium-64 65, polyquaternium-68 or a mixture of two or more of these. That.
Examples of the cationic polymer derived from a natural product include cationic cellulose such as o- (2-hydroxy-3- (trimethylammonio) propyl) hydroxyethylcellulose chloride; o- (2-hydroxy-3- (trimethyl chloride). Preferred examples include cationized guar gums such as ammonio) propyl) guar gum; cationized dextrans such as dextran chloride hydroxypropyltrimethylammonium ether; cationized tara gum such as caesarpinia spinosahydroxypropyltrimonium chloride or a mixture of two or more of these. .
The mixing ratio of the cationic polymer can be appropriately selected according to the type of the target warm skin cosmetic. In order to maintain the stability of the hydrated exothermic inorganic powder in the preparation, in particular, the stability at high temperatures for a long period of time and to improve the usability of the preparation sufficiently, On the other hand, it is 0.1-5.0 mass% normally, Preferably it is 0.3-3.0 mass%.

The oil component used in the present invention is a component that contributes to improving the feeling of use of warm skin cosmetics, and includes, for example, hydrocarbon liquid oils such as liquid paraffin and liquid isoparaffin; safflower oil, soybean oil , Evening primrose oil, grape seed oil, rosehip oil, cucumber nut oil, almond oil, sesame oil, wheat germ oil, corn oil, cottonseed oil, avocado oil, olive oil, camellia oil, persic oil, castor oil, peanut oil, hazelnut oil, macadamia nut Vegetable liquid oils such as oil, medofoam oil, jojoba oil; cetyl 2-ethylhexanoate, isopropyl myristate, isopropyl palmitate, isononyl isononanoate, 2-hexdecyl isostearate, isostearyl myristate, tri-2-ethylhexane Glyceryl acid, dialkyl carbonate, tri (caps Examples include ester oils such as ril / capric acid) glycerin and di (capryl / capric acid) propylene glycol, or a mixture of two or more of these.
The blending ratio of the oil component can be appropriately selected according to the type of the target warm skin cosmetic. In terms of the feeling of use and stability of the warm skin cosmetic, it is usually 0.2 to 5.0% by mass, preferably 0.3 to 3.0% by mass, based on the total amount of the warm skin cosmetic.

The nonionic surfactant used in the present invention is a component having an action of improving the dispersibility of the oil component and the like, for example, polyoxyethylene alkyl ether, polyoxyethylene-polyoxypropylene alkyl ether, fatty acid Examples include polyoxyethylene sorbitan, fatty acid polyglyceryl, or a mixture of two or more of these.
The blending ratio of the nonionic surfactant can be appropriately selected according to the type of the target warm skin cosmetic, the content ratio of the oil component, and the like. In terms of usability and stability, the amount is usually 0.05 to 1.0% by mass, preferably 0.1 to 0.5% by mass, based on the total amount of warm skin cosmetics. In particular, 20-30 mass parts is preferable with respect to 100 mass parts of the oil components.

The non-aqueous medium used in the present invention may be any non-aqueous medium that can dissolve or disperse each component, and examples thereof include polyhydric alcohols that generate heat by hydration. Specifically, for example, polyethylene glycol, glycerin, 1,3-butylene glycol, propylene glycol, 3-methyl-1,3-butanediol, or a mixture of two or more of these are preferable. Examples of the mixture include a mixture containing polyethylene glycol and 1,3-butylene glycol and containing at least one of glycerin, propylene glycol or 3-methyl-1,3-butanediol.
The blending ratio of the non-aqueous medium can be appropriately selected according to each component and the type of the non-aqueous medium so that the viscosity of the warm skin cosmetic is about 200,000 mPa · s to 500,000 mPa · s. It is 58-93 mass% normally with respect to skin cosmetics whole quantity, Preferably it is 68-92 mass%.

In the warm skin cosmetic of the present invention, in addition to the above-mentioned components, other components that can be generally used in cosmetics can be appropriately combined and blended within a range that does not impair the desired effects of the present invention.
Other components include an inorganic powder other than the exothermic inorganic powder, which exhibits a preparation stabilizing effect and a feeling of use improvement, such as silica, talc, kaolin, sericite, clay, silicon, silicon resin, and ceramic. Mica or a mixture of two or more of these may be included. In order to further improve the warmth, for example, a skin stimulant such as pepper tincture, ginger tincture, camphor, nonanoic acid vanillamide, methyl salicylate, glycol salicylate, benzyl nicotinate or a mixture of two or more thereof is contained. Can be made.
As other components, in addition to the above, for example, moisturizers, other surfactants, antioxidants, plant extracts, preservatives, fats and oils, alcohols, fungicides, fragrances, dyes, pigments, proteases, lipases Enzymes such as lysozyme chloride, papain and pancreatin can also be contained.
The mixing ratio when other components are contained can be appropriately selected according to the type and purpose. It is usually 5% by mass or less, preferably 3% by mass or less, based on the total amount of warm skin cosmetics.

  The warm skin cosmetic of the present invention can be produced according to a known method depending on the type. In order to improve the dispersibility and the like of each component, the above-described cationic polymer, oil component and nonionic surfactant used in the present invention are mixed in advance before mixing with other components. It is preferable. Commercial products in which the above-described cationic polymer, oil component and nonionic surfactant are mixed in advance can also be used. As the commercially available product, for example, trade name “Salcare SC96” (manufactured by Ciba Specialty Chemicals) is preferably exemplified.

Hereinafter, although an example and a comparative example explain the present invention still in detail, the present invention is not limited to these.
Examples 1-4 and Comparative Examples 1-4
Each component shown in Table 1 was mixed and prepared by a conventional method to produce a skin care cream. In addition, the brand name "Zeoram A-4 LPH" (made by Tosoh Corporation) was used for the activated zeolite. Polyquaternium-37, di (capryl / capric acid) PG (abbreviation of propylene glycol) and polyoxyethylene (6) polyoxypropylene (1) tridecyl ether are mixed and emulsified before mixing with other components. We used after letting. Various evaluation shown below was performed using each obtained skin care cream. The results are shown in Table 1.
<Warm feeling evaluation>
The obtained skin care cream was evaluated after being applied to the back of the hand and massaged by a panel of five people. The evaluation was based on an average score of 5 people, with 5 points indicating a very warm feeling, 3 points indicating a warm feeling, and 1 point indicating no warm feeling.
<Evaluation of use>
The obtained skin care cream was evaluated after being applied to the back of the hand and massaged by a panel of five people. Evaluation was based on an average score of 5 people, with 5 points for good feeling, 3 points for normal feeling, and 1 point for poor feeling.
<High temperature stability evaluation>
The obtained skin care cream was filled in a polyethylene tube and evaluated after being left in a thermostatic chamber at 50 ° C. for 4 weeks. In the evaluation, the case where there was no change in viscosity before and after standing and the separation did not occur was evaluated as “◯”, the viscosity decreased slightly, the case where the separation was slightly, Δ, the case where the viscosity was remarkably decreased, and the separation separated as “X”.

Examples 5-8 and Comparative Examples 5-8
Each component shown in Table 2 was mixed and prepared by a conventional method to produce a gel-like cleaning material. In addition, the brand name "Zeoram A-4 LPH" (made by Tosoh Corporation) was used for the activated zeolite. Polyquaternium-37, di (capryl / capric acid) PG and polyoxyethylene (6) polyoxypropylene (1) tridecyl ether were used after being mixed and emulsified before mixing with other components. Various evaluations shown below were performed using the obtained cleaning materials. The results are shown in Table 2.
<Warm feeling evaluation>
The obtained cleaning material was evaluated after being applied to the back of the hand and massaged by a panel of five people. The evaluation was based on an average score of 5 people, with 5 points indicating a very warm feeling, 3 points indicating a warm feeling, and 1 point indicating no warm feeling.
<Evaluation of use>
The obtained cleaning material was applied to the back of the hand by a panel of five people, massaged, and then washed with water for evaluation. Evaluation was based on an average score of 5 people, with 5 points for good feeling, 3 points for normal feeling, and 1 point for poor feeling.
<High temperature stability evaluation>
The obtained skin care cream was filled in a polyethylene tube and evaluated after being left in a thermostatic chamber at 50 ° C. for 4 weeks. In the evaluation, the case where there was no change in viscosity before and after standing and the separation did not occur was evaluated as “◯”, the viscosity decreased slightly, the case where the separation was slightly, Δ, the case where the viscosity was remarkably decreased, and the separation separated as “X”.

Claims (4)

A cream-like or gel-like cosmetic that produces a warm feeling upon contact with the skin, comprising a hydrated exothermic inorganic powder, a cationic polymer, an oil component, a nonionic surfactant, and a non-aqueous medium. see containing the cationic polymer, polyquaternium -5, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium -16, polyquaternium -22, polyquaternium -28, polyquaternium -32, polyquaternium -33, polyquaternium-37, Polyquaternium-39, Polyquaternium-43, Polyquaternium-44, Polyquaternium-46, Polyquaternium-47, Polyquaternium-49, Polyquaternium-51, Polyquaternium-52, Polyquaternium-53, Polyquaternium-55, Po A non-aqueous warm skin cosmetic characterized by being Liquaterium-57, Polyquaternium-61, Polyquaternium-64, Polyquaternium-65, Polyquaternium-68, or a mixture of two or more thereof . The warm skin cosmetic according to claim 1, wherein the cationic polymer is polyquaternium-37.   The warm skin cosmetic according to claim 1 or 2, wherein the non-aqueous medium contains a polyhydric alcohol.   Based on the total amount of warm skin cosmetics, the blending ratio of the hydrated exothermic inorganic powder is 5 to 40% by weight, the blending ratio of the cationic polymer is 0.1 to 5.0% by weight, and the content ratio of the oil component is The content ratio of 0.2 to 5.0 mass%, nonionic surfactant is 0.05 to 1.0 mass%, and the blending ratio of the non-aqueous medium is 58 to 93 mass%. The warm skin cosmetic according to any one of the above.