JP2022050173A - Antiperspirant composition - Google Patents

Abstract

To provide an antiperspirant composition wherein: even in the case of containing high-concentration ethanol, it protects the skin from getting unnatural whiteness after its application, and it also has excellent quick-dryability and stability.SOLUTION: An antiperspirant composition contains a component (A): chlorohydroxy aluminum, a component (B): ethanol, and a component (C): a tetraester of a C8-22 fatty acid and pentaerythritol. The content of the component (B) is 70-98 mass% and the content of the component (C) is 0.1-5 mass%.SELECTED DRAWING: None

Description

The present invention relates to an antiperspirant composition.

Body odor such as axillary odor is caused by the mixture of sweat and sebum, which are decomposed by indigenous bacteria on the skin. Therefore, in order to prevent body odor, it is effective to suppress sweat that causes odor, and an antiperspirant composition containing various antiperspirant components is used. As the antiperspirant composition, one containing chlorohydroxyaluminum as an antiperspirant component is known (for example, Patent Document 1).

International Publication No. 2013/081055

In an antiperspirant composition containing chlorhydroxyaluminum, which is an antiperspirant component, when ethanol is added at a high concentration for the purpose of improving quick-drying properties, a white residue is formed after the antiperspirant composition applied to the skin dries. There was a problem that the remaining phenomenon (so-called whitening) occurred. It is considered that this is due to the high volatilization rate of ethanol blended in high concentration and the lamination of chlorohydroxyaluminum. As a method of suppressing the whitening, it is conceivable to add an oil component. For example, if the oil content has a low IOB value, whitening can be suppressed by blending a small amount. However, in this case, in a system containing a high concentration of ethanol, the stability is poor and the oil content is separated.

Therefore, an object of the present invention is an antiperspirant composition which is less likely to cause whitening after being applied to the skin even when ethanol is blended in a high concentration, has excellent quick-drying properties, and has excellent composition stability. It is to provide things.

As a result of diligent studies to achieve the above object, the present inventors have found that component (A): chlorohydroxyaluminum, component (B): ethanol, and component (C): fatty acid having 8 to 22 carbon atoms and pentaerythritol. According to the antiperspirant composition containing the tetraester of the above, and the content ratios of the component (B) and the component (C) are within the specific ranges, the skin is blended even when ethanol is blended in a high concentration. It has been found that whitening is less likely to occur after application to, quick-drying is excellent, and the stability of the composition is excellent. The present invention has been completed based on these findings.

That is, the present invention contains the following component (A), the following component (B), and the following component (C), the content ratio of the component (B) is 70 to 98% by mass, and the content of the component (C) is contained. Provided is an antiperspirant composition having a proportion of 0.1 to 5% by mass.
Component (A): Chlorhydroxyaluminum Component (B): Ethanol Component (C): Tetra ester of fatty acid having 8 to 22 carbon atoms and pentaerythritol

The component (C) is preferably pentaerythrityl tetraethylhexanoate.

The antiperspirant composition is preferably a non-emulsifying composition.

The antiperspirant composition preferably does not contain a surfactant, or has a surfactant content of 1% by mass or less.

The antiperspirant composition of the present invention is less likely to cause whitening after being applied to the skin, is excellent in quick-drying property, and is excellent in stability of the composition even when ethanol is blended in a high concentration. In addition, since it is not necessary to add a large amount of oil in order to suppress whitening, it is possible to prevent stickiness from occurring on the skin after application.

The antiperspirant composition of the present invention contains at least chlorohydroxyaluminum, ethanol, and a tetraester of a fatty acid having 8 to 22 carbon atoms and pentaerythritol. In the present specification, chlorohydroxyaluminum is referred to as "component (A)", ethanol is referred to as "component (B)", and a tetraester of a fatty acid having 8 to 22 carbon atoms and pentaerythritol is referred to as "component (C)", respectively. May be referred to.

That is, the antiperspirant composition of the present invention contains at least the component (A), the component (B), and the component (C). The antiperspirant composition of the present invention may contain components other than the above components (A) to (C). Further, as each component contained in the antiperspirant composition of the present invention, for example, each component such as component (A), component (C), and other components may be used alone, or two. More than a seed may be used.

[Ingredient (A)]
The component (A) is chlorohydroxyaluminum. The component (A) is a component blended as an antiperspirant component and a component exhibiting a deodorant effect. As the component (A), only one kind may be used, or two or more kinds may be used.

The content ratio of the component (A) in the antiperspirant composition of the present invention is preferably 1 to 6% by mass, more preferably 2 to 6% by mass, based on 100% by mass of the antiperspirant composition of the present invention. It is 5% by mass, more preferably 3 to 5% by mass. When the content ratio is 1% by mass or more, the antiperspirant action of the antiperspirant composition is further improved. Further, when the component (A) is small, the problem of whitening is unlikely to occur. When the content ratio is 6% by mass or less, it is more excellent in the absence of whitening. The content ratio of the component (A) is the total of the content ratios of all the components (A) in the antiperspirant composition of the present invention.

[Component (B)]
The component (B) is ethanol. By using the component (B), it is possible to impart a quick-drying property and a refreshing feeling to the antiperspirant composition of the present invention. In addition, after applying the antiperspirant composition of the present invention to the skin, it has a stickiness suppressing action and a bactericidal action.

The content of the component (B) in the antiperspirant composition of the present invention is 70 to 98% by mass, preferably 75 to 96% by mass, based on 100% by mass of the antiperspirant composition of the present invention. More preferably, it is 80 to 95% by mass. When the content ratio is 70% by mass or more, the quick-drying property after application to the skin is excellent. In addition, it can give a refreshing feeling to the skin, and has excellent anti-stickiness and bactericidal effects.

[Component (C)]
The component (C) is a tetraester of a fatty acid having 8 to 22 carbon atoms and pentaerythritol. By blending the component (C), even when the component (B) is blended in a high concentration, the whitening of the component (A) is less likely to occur after application to the skin, and the precipitation of the component (A) Is suppressed, and the stability of the composition is excellent. As the component (C), only one kind may be used, or two or more kinds may be used.

Examples of the component (C) include pentaerythrityl tetraethylhexarate, pentaerythrityl tetraisostearate, pentaerythrityl tetramyristate, pentaerythrityl tetrastearate, and pentaerythrityl tetrabehenate. Of these, pentaerythrityl tetraethylcaproate is preferred.

The content ratio of the component (C) in the antiperspirant composition of the present invention is 0.1 to 5% by mass, preferably 0.3 to 3% by mass, based on 100% by mass of the antiperspirant composition of the present invention. It is 3% by mass, more preferably 0.3 to 1.5% by mass. When the content ratio is 0.1% by mass or more, whitening of the component (A) can be suppressed after application to the skin. When the content ratio is 5% by mass or less, the stickiness derived from the component (C) can be further suppressed. The content ratio of the above component (C) is the total of the content ratios of all the components (C) in the antiperspirant composition of the present invention.

[water]
The antiperspirant composition of the present invention preferably contains water. The water is not particularly limited, but purified water is preferable. From the viewpoint of quick-drying, the content of water in the antiperspirant composition of the present invention is preferably 0.1 to 28% by mass with respect to 100% by mass of the antiperspirant composition of the present invention. It is more preferably 1 to 15% by mass, still more preferably 3 to 10% by mass. It does not have to contain water.

The antiperspirant composition of the present invention may contain a thickener. Examples of the thickener include water-soluble polymers. Specific examples of the thickener include cellulosic thickeners such as hydroxyalkyl cellulose; acrylic thickeners such as carboxyvinyl polymers and alkyl-modified carboxyvinyl polymers; and gum-based thickeners such as xanthan gum and guar gum. Can be mentioned. Examples of the hydroxyalkyl cellulose include hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose and the like. As the thickener, only one kind may be used, or two or more kinds may be used.

When the antiperspirant composition of the present invention contains a thickener, the content ratio of the thickener in the antiperspirant composition of the present invention is 0 with respect to 100% by mass of the antiperspirant composition of the present invention. It is preferably 0.05 to 3% by mass, more preferably 0.1 to 2% by mass. The content ratio of the thickener is the total of the content ratios of all the thickeners in the antiperspirant composition of the present invention.

[Other ingredients]
The antiperspirant composition of the present invention may contain components (other components) other than the above-mentioned components such as the above-mentioned components (A) to (C). The above-mentioned other ingredients are not particularly limited, and examples thereof include ingredients usually used in cosmetics and quasi-drugs. Specifically, for example, lower alcohols other than the component (B); oily components other than the component (C); polyhydric alcohols; anti-inflammatory agents such as glycyrrhizinic acid and its salts; refreshing agents such as menthol; phosphoric acid and its thereof. Acids, citric acid and its salts, lactic acid and its salts, sodium hydroxide, triethanolamine and other pH regulators; fragrances; UV absorbers; antioxidants; preservatives; metal ion blockers; pigments; pigments; vitamins Amino acids; astringents; whitening agents; animal and plant extracts; neutralizing agents; bactericidal agents; antiperspirant components other than component (A); deodorants; acids; alkalis and the like. As each of the above other components, only one kind may be used, or two or more kinds may be used.

The antiperspirant component is, for example, a drug that suppresses the generation of sweat by converging the skin. Examples of the antiperspirant component other than the component (A) include aluminum chloride, aluminum potassium sulfate, aluminum sulfate, aluminum acetate, allantoinchlorhydroxyaluminum, zinc paraphenolsulfonate, and the like.

The bactericidal agent is, for example, an agent that suppresses the growth of indigenous skin flora that produces a substance that causes body odor. Examples of the bactericidal agent include isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, phenol, trichlorocarbanilide, chlorhexidine gluconate, triclosan, triclocarban, piroctone olamine, zincpyrythion, salicylic acid, and sorbic acid. , Chlorhexidine, etc.

Examples of the refreshing agent include menthol, menthol glyceryl ether, mentyl lactate, camphor, eucalyptus, and cilin.

The antiperspirant composition of the present invention preferably contains or substantially no surfactant. That is, the antiperspirant composition of the present invention does not contain a surfactant, or the content ratio of the surfactant in the antiperspirant composition of the present invention is 100% by mass of the antiperspirant composition of the present invention. On the other hand, it is preferably 1% by mass or less (preferably 0.5% by mass or less, more preferably 0.3% by mass or less). When the content ratio of the surfactant is 1% by mass or less, the stability of the composition is more excellent, and stickiness, sliminess and irritation to the skin at the time of application can be suppressed.

Examples of the surfactant include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

The antiperspirant composition of the present invention preferably contains, or substantially does not contain, a small amount of an oily component other than the component (C) from the viewpoint of further suppressing stickiness and being more excellent in stability. That is, the antiperspirant composition of the present invention does not contain an oily component other than the component (C), or the content ratio of the oily component other than the component (C) in the antiperspirant composition of the present invention is the present. It is preferably 2% by mass or less (preferably 1.5% by mass or less, more preferably 1% by mass or less) with respect to 100% by mass of the antiperspirant composition of the present invention.

The antiperspirant composition of the present invention is preferably a non-emulsifying composition (non-emulsifying type composition). When it is a non-emulsifying composition, quick-drying property and a refreshing feeling of use are further improved. In addition, the stickiness of the skin after application is less likely to occur, and the stability is also excellent.

The dosage form of the antiperspirant composition of the present invention is not particularly limited, and examples thereof include lotions, mists, sprays (aerosol type and non-aerosol type), tubes, sheets, roll-ons and the like. The antiperspirant composition of the present invention is preferably used as a roll-on dosage form. In the roll-on dosage form, the composition can be applied directly and uniformly to the object to be coated without having to attach the composition to the object to be applied by hand, and the coating property is excellent. For example, it is easy to directly apply the antiperspirant composition in the roll-on container to the skin such as the armpit. When the antiperspirant composition of the present invention is in the roll-on dosage form, it is filled in a roll-on container and used as a roll-on product. The roll-on product comprises a container capable of discharging the contents and the antiperspirant composition of the present invention filled in the container. The container is provided with a roll in the coating portion. The roll may be a cylindrical member or a spherical member.

The antiperspirant composition of the present invention is preferably used by being applied to the skin. Examples of the application portion when applied to the skin include the armpits, arms, feet, soles, neck, chest, trunk, buttocks, face, and hair.

The antiperspirant composition of the present invention is not particularly limited and can be produced by a known or conventional method. For example, a method of mixing each of the above components and stirring using a known stirring device such as a disper mixer or a paddle mixer to homogenize each component can be mentioned.

The antiperspirant composition of the present invention contains a fatty acid having 8 to 22 carbon atoms in a system containing a high concentration of ethanol [component (B)] and chlorhydroxyaluminum [component (A)] which is an antiperspirant component. It is presumed that by containing the tetraester [component (C)] with pentaerythritol in a specific content ratio, the precipitation of the component (A) is suppressed and the lamination of the component (A) is inhibited. It is possible to suppress the whitening of the component (A) on the skin. And, it does not inhibit the quick-drying property exhibited by containing the high concentration component (B). In addition, since it is not necessary to add a large amount of oil, it is possible to prevent stickiness from occurring on the skin after application.

Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. The blending amount shown in the table is the blending amount of each component (that is, the blending amount of the active ingredient in each raw material, so-called pure content), and is expressed in "mass%" unless otherwise specified. In addition, "-" in the table indicates that it was not blended.

Examples 1 to 15, Comparative Examples 1 to 17
Using each component (components (A) to (C)) and other components shown in the table, each antiperspirant composition of Examples and Comparative Examples was prepared by a conventional method.

(evaluation)
Each composition obtained in Examples and Comparative Examples was evaluated as follows. The evaluation results are shown in the table. In addition, "-" in the table indicates that the evaluation was not performed.

(1) No whitening of each composition obtained in Examples and Comparative Examples was dropped into the inner part of the forearm in an amount of about 0.15 g and dried with a dryer. The dropped portion of the composition after drying was visually observed, and the absence of whitening was judged according to the following criteria.
[criterion]
◎ (Good): No white residue is seen in the dripping part.
〇 (Available): A small amount of white residue can be seen in the dripping part.
× (defective): White residue is clearly seen in the dropped portion.

(2) Stability Each composition obtained in Examples and Comparative Examples was placed in a mayonnaise bottle and allowed to stand at 40 ° C. for 1 week. The state of the composition after standing was visually observed, and the stability was judged according to the following criteria.
[criterion]
〇 (Good): No separation between the aqueous phase and the oil phase was observed, and the condition is uniform.
× (defective): Separation of aqueous phase and oil phase is observed.

(3) Quick-drying About 0.05 g of each composition obtained in Examples and Comparative Examples was dropped onto the inner part of the forearm, and the dropping part was applied by reciprocating the hand. The quick-drying property was judged according to the following criteria based on the change in the feel until the composition felt that the composition was familiar to the skin without slipping due to the composition of the coated portion.
[criterion]
〇 (Good): It is felt that the composition has become familiar with the skin by 8 round trips.
× (Defective): At the time of 8 round trips, the slimy composition clearly remains, and it does not feel familiar.

As shown in the table, the antiperspirant composition (Example) of the present invention was evaluated to be excellent in quick-drying property and stability without causing whitening even though ethanol was blended in a high concentration. .. Further, after the evaluation of the quick-drying property of the whitening, the stickiness of the coated surface was evaluated, and it was evaluated that the stickiness was not felt. On the other hand, when other powders were used instead of chlorohydroxyaluminum (Comparative Examples 1 to 4), whitening occurred. When the content of ethanol was low (Comparative Example 5), the stability and quick-drying property were inferior. Further, when an ester oil other than the component (C) was used instead of pentaerythrityl tetraethylhexanoate (Comparative Examples 6 to 16) or when pentaerythrityl tetraethylhexanoate was not blended (Comparative Example 17), white. Floating occurred or was inferior in stability.

Further, a formulation example of the antiperspirant composition of the present invention is shown below.
Formulation Example 1 Deodorant Lotion, Deodorant Roll-On Chlorhydroxyaluminum 4.0% by Mass
Ethanol 80.0% by mass
Pentaerythrityl tetraethylcaproate 0.6% by mass
Isopropylmethylphenol 0.05% by mass
Salicylic acid 0.1% by mass
Lysozyme chloride 0.05% by mass
Benzalkonium chloride 0.02% by mass
Menthol 0.02% by mass
Phenoxyethanol 0.2% by mass
Sodium hyaluronate 0.01% by mass
Hydrolyzed collagen 0.1% by mass
Royal jelly extract 0.1% by mass
Artichoke extract 0.1% by mass
Phellodendron extract 0.1% by mass
Melissa extract 0.1% by mass
Peach extract 0.1% by mass
Blueberry extract 0.1% by mass
Aloe extract 0.1% by mass
Comfrey extract 0.1% by mass
Saxifraga extract 0.1% by mass
Soybean extract 0.1% by mass
Chimpi extract 0.1% by mass
Camomila extract 0.1% by mass
Cucumber extract 0.1% by mass
Peony extract 0.1% by mass
Hamamelis extract 0.1% by mass
Ginkgo extract 0.1% by mass
Hydrolyzed silk liquid 0.1% by mass
Hydrolyzed conchiolin solution 0.1% by mass
Sage extract 0.1% by mass
Total balance of purified water 100.0% by mass

Prescription Example 2 Deodorant Gel Chlorhydroxyaluminum 4.0% by mass
Ethanol 80.0% by mass
Pentaerythrityl tetraethylcaproate 0.6% by mass
Hydroxypropyl cellulose 0.2% by mass
Acrylic acid / alkyl methacrylate copolymer 0.05% by mass
Sodium acrylate / sodium acryloyldimethyltaurate copolymer
0.3% by mass
Xanthan gum 0.03% by mass
Polyacrylate crosspolymer-6 0.1% by mass
Carboxyvinyl polymer 0.6% by mass
Triethanolamine Appropriate amount of purified water Total balance 100.0% by mass

Claims (4)

It contains the following component (A), the following component (B), and the following component (C), the content ratio of the component (B) is 70 to 98% by mass, and the content ratio of the component (C) is 0.1 to. An antiperspirant composition in an amount of 5% by mass.
Component (A): Chlorhydroxyaluminum Component (B): Ethanol Component (C): Tetra ester of fatty acid having 8 to 22 carbon atoms and pentaerythritol The antiperspirant composition according to claim 1, wherein the component (C) is pentaerythrityl tetraethylhexanoate. The antiperspirant composition according to claim 1 or 2, which is a non-emulsifying composition. The antiperspirant composition according to any one of claims 1 to 3, which does not contain a surfactant or has a surfactant content of 1% by mass or less.