JP2003335626A - Sheetlike cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a sheetlike cosmetic without tingling as compared with use of a conventional preservative and safe even for users having sensitive skin. <P>SOLUTION: This sheetlike cosmetic is obtained by impregnating a sheet with a liquid composition containing a DL-pyrrolidonecarboxylic acid salt of ethyl-N-cocoyl-L-arginate. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a sheet cosmetic. More specifically, the present invention relates to a sheet-like cosmetic material which has a sufficient antiseptic property and has significantly improved safety and manufacturability.

[0002]

2. Description of the Related Art In recent years, with the expansion of the range of action of cosmetics users, the place and time at which makeup is performed are diversified.
Specifically, with the expansion of the range of women's social activities and the increasing opportunities to go out, the need for cosmetics on the go is rapidly increasing, and cosmetics are also required to be portable.

As one of the cosmetics that is convenient to carry, a sheet-shaped cosmetic for the purpose of moisturizing and cleaning, that is, a cosmetic sheet is used. The mainstream of these cosmetic sheets is an impregnated sheet type sheet-like cosmetic material, which is obtained by impregnating paper, non-woven fabric, woven fabric or the like with a liquid agent such as lotion or cleaning water.

As a stock solution to be impregnated into the impregnated sheet, a general liquid preparation such as an external preparation for skin is generally used. Preservatives such as paraben (paraoxybenzoic acid ester) and phenoxyethanol, which are usually used in cosmetics, are added to this liquid preparation in consideration of primary contamination during production.

[0005]

In many cases, the impregnated sheet type sheet-shaped cosmetic is brought into contact with the skin for a longer period of time than when the liquid preparation is directly applied to the skin. Therefore, the antiseptic-containing liquid preparation impregnated in the sheet is in contact with the skin for a relatively long time, so that irritation such as hot flashes and tingling often occurs.

As a countermeasure for this, there is a method of simply reducing the content of the preservative. However, although the irritation can be reduced, the preservative power is weakened against the primary contamination during the preparation of the preparation, and the quality deterioration due to the increase of bacteria during the preparation storage. There is a risk of causing undesired.

There is also a method of increasing the alcohol concentration in the stock solution of the formulation to ensure antiseptic power, but when used by a user who is sensitive to alcohol, irritation by alcohol may occur, which is not preferable.

The inventors of the present invention have conducted extensive studies in view of the above circumstances, and as a result, in an impregnated sheet type sheet cosmetic, N-coconut oil fatty acid acyl L-arginine ethyl D was added to the stock solution of the formulation.
When L-pyrrolidone carboxylate (hereinafter, also referred to as CAE) is blended, the antiseptic power at the time of production can be sufficiently secured,
A cosmetic impregnated sheet with excellent safety and manufacturability is obtained,
Moreover, they have found that they have little irritation even when used for a long time, and completed the present invention.

[0009] In a general stock solution containing a preservative for cosmetics, paraben (paraoxybenzoic acid ester), phenoxyethanol, etc., the preservative is present in the liquid even after impregnating the sheet, which causes skin irritation. It has become. However, in the present invention in which CAE is mixed in place of the conventional preservative, although it exhibits the antiseptic effect by being molecularly dispersed in the preparation in the same manner as the conventional antiseptic, the sheet is impregnated with a non-woven fabric or the like. Adsorbed to the sheet composed of the above, the effect on the skin disappears and the irritation unlike conventional preservatives is not felt.

Surprisingly, in the present invention, when the sheet is impregnated with the formulation stock solution containing CAE, the unevenness of immersion during the impregnation is remarkably reduced, and the productivity of the sheet-like cosmetic composition is greatly improved. .

[0011]

That is, the present invention is based on N
The present invention provides a sheet-shaped cosmetic, wherein a sheet is impregnated with a liquid composition containing coconut oil fatty acid acyl L-arginine ethyl DL-pyrrolidone carboxylate.

Further, the present invention provides the above-mentioned sheet-shaped cosmetic, wherein the liquid composition contains a humectant.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

N-coconut oil fatty acid acyl L used in the present invention
-Arginine ethyl DL-pyrrolidone carboxylate is a known cosmetic raw material, and is trade name CA from Ajinomoto Co., Inc.
Marketed in E. The amount to be added to the liquid composition (undiluted solution) is appropriately determined depending on the production conditions, but is usually 0.001 to 1.0% (mass percentage), preferably 0.003 to the total amount of the liquid composition. It is 0.1% (mass percentage).

The liquid composition is a stock solution of a preparation containing CAE and is a liquid composition such as a lotion for impregnating a sheet. It may be a CAE-containing aqueous solution in which CAE is simply dissolved in water in order to rehydrate the skin or remove hot flashes, or a cosmetic ingredient or drug used as a stock solution of a conventional impregnation sheet for cosmetics. It may be a formulated lotion, emulsion, or other external skin preparation. For example, CA
Liquid compositions containing E include humectants such as glycerin, butylene glycol, dipropylene glycol, buffers such as citric acid, sodium citrate, phosphoric acid and sodium phosphate, chelating agents such as EDTA, alcohols, emollients. An agent, a thickener, a surfactant, a pigment, a fragrance, etc. are preferably blended to form a stock solution for impregnation into a sheet cosmetic. The liquid composition may also be a liquid-type skin cleanser for keeping the skin clean and clean. The liquid composition used in the present invention can be used without particular limitation as long as it is a formulation stock solution used in conventional sheet cosmetics. That is, the liquid composition is not particularly limited as long as it can impregnate the sheet. CA for liquid compositions
It is an essential requirement that E is contained at the time of manufacturing the sheet cosmetic. Since CAE is contained in the drug substance stock solution, it is not necessary to substantially add a conventional preservative or alcohol.
Of course, it is also possible to mix them. It is also a great advantage that CAE can be used together with conventional antiseptics such as paraben, phenoxyethanol, and ethanol in a small blending amount so as not to cause irritation. Liquid composition is CA in water
It may be produced by mixing E and other compounding ingredients, and can be produced by a conventional method in the same manner as the conventional stock solution for impregnated cosmetic sheets.

As the sheet used for the sheet-like cosmetic, any non-woven fabric or woven fabric of natural fibers or synthetic fibers can be used. For example, cotton, pulp, rayon, polyester, polyethylene, polypropylene, polyurethane, acrylic, acetate, polyamide, and a combination of two or more of these. The size of the sheet is not limited. Also, the sheets may be multi-layered of different materials. Any cosmetic sheet used in conventional sheet cosmetics can be used without any particular problem.

The method for producing the sheet-shaped cosmetic of the present invention is not limited. An undiluted solution such as a lotion is prepared by a conventional method. Then, the sheet is impregnated with the stock solution of the formulation in the same manner as in the conventional method for producing a sheet-shaped cosmetic, and the sheet is manufactured by a conventional method.
When a sheet is impregnated with the CAE-containing undiluted solution, unevenness in immersion during impregnation is significantly reduced, and the productivity of the sheet-shaped cosmetic composition is significantly improved.

The sheet-shaped cosmetic composition of the present invention includes a cosmetic composition used for impregnating a sheet with a liquid composition such as a lotion and applying the sheet to the skin for a certain period of time or wiping the skin. It is a sheet. Also called a makeup sheet,
It is a sheet impregnated with simple water, lotion, and external skin preparation. A sheet impregnated with a lotion containing a moisturizer or a whitening agent is preferable. Liquid compositions include emulsified compositions such as emulsions that can be impregnated into sheets. It is also possible to apply cream or the like to the sheet. The sheet-shaped cosmetic material impregnated with the stock solution of the liquid composition, that is, the cosmetic sheet, is used by being stored in a pouch pack, a portable container, or the like so that the stock solution of the formulation does not evaporate.

[0019]

EXAMPLES The present invention will be described more specifically by way of examples. The present invention is not limited to the examples below. Unless otherwise specified, the blending amount represents% (mass percentage).

The amount adsorbed on the non-woven fabric and the amount remaining in the formulation stock solution were measured for the case where CAE was blended in the formulation stock solution (lotion: liquid composition) of the following formulation and where phenoxyethanol, which is a general-purpose preservative, was blended. . The measurement was quantified by liquid chromatography under the following conditions.

Under the following liquid chromatography (LC) conditions, CAE is separated into several peaks due to the distribution of alkyl groups in fatty acids, but the largest peak (retention time:
Approximately 12 minutes) was used for quantification by the absolute calibration curve method. Using the same lot of CAE as in the example, CAE 100 mg / 10
0 mL (50% acetonitrile aqueous solution) was appropriately diluted to prepare a standard solution of 10 to 120 ppm, and an absolute calibration curve was created. "LC conditions" Column: CAPCELL PAK SCX UG80 (Shiseido Co., Ltd .: 250 mm x 4.6 mm) Mobile phase: Water: Acetonitrile = 58:42 (0.1 M
Sodium perchlorate) Flow rate: 1.0 mL / min Column temperature: 40 ° C Detection wavelength: UV210 nm Injection volume: 20 μL

The non-woven fabric is 100% cotton with a basis weight of 40 g /
Using 100 m ² of non-woven fabric, 100 g of non-woven fabric was impregnated with 350 g of the stock solution of the formulation, enclosed in an aluminum pouch, and left at room temperature. After one week, phenoxyethanol and CAE contained in the drug substance stock solution obtained by squeezing the nonwoven fabric were quantified.

The formulation of the stock solution (lotion) is as follows. "Lotion" Glycerin 5.0% (mass percentage) 1,3-butylene glycol 5.0 Hydrogenated hydrogenated castor oil 0.3 Citric acid 0.01 Sodium citrate 0.04 CAE 0.01 Phenoxyethanol 0.3 Purified water residue

The results are shown in "Table 1".

[Table 1]

In Table 1, the quantitative value represents the value (%) quantified by liquid chromatography, and the coping value is the prescription value (CAE 0.01%, phenoxyethanol 0.3%) of the quantitative value. Indicates a ratio (%).
From the results in "Table 1", in the case of the formulation stock solution containing CAE, the CAE concentration in the formulation stock solution after impregnating the nonwoven fabric is extremely decreased. Therefore, C in the drug substance stock solution that adheres to the skin
Naturally, the action of AE is also reduced, and it is highly safe for the skin.

Next, a moisturizing lotion was produced by a conventional method according to the formulation shown in "Table 2". A sheet of cotton material (100% cotton, basis weight 40 g / m ² ) is folded in four and 10 sheets are stacked (total sheet weight 16 g), and 56 g of moisturizing lotion is dropped into the center of the sheet to impregnate it into an aluminum pouch. A sheet-shaped cosmetic was manufactured by enclosing it. The immersion unevenness at the time of impregnating the sheets was visually confirmed whether all of the above 10 sheets were impregnated with the moisturizing lotion. The immersion unevenness during the impregnation is the number of samples in which the impregnated state is insufficient among the 100 sheets manufactured as described above. In addition, the sheet-shaped cosmetics were actually tested by 20 panelists.

The results are shown in "Table 2". From this result CA
The cosmetic sheet of Example 2 containing E had no soaking unevenness during impregnation, which greatly contributes to the improvement of manufacturability. In addition, compared with the comparative example in which methylparaben or ethanol was blended, there was no sticking at the time of use. Example 2 shows that the combination of CAE and phenoxyethanol exhibits a favorable effect. When used in combination with CAE, the compounding amount of phenoxyethanol is 0 to 3 with respect to the total amount of the lotion.
% (Mass percentage) is preferred.

[0028]

[Table 2] * 1: Quantified as in Example 1.

Next, a moisturizing lotion was prepared by a conventional method according to the formulation shown in "Table 3". The sheet was impregnated in the same manner as in Example 2 to produce a sheet-shaped cosmetic composition and evaluated. The sheet material used was a 100% rayon sheet. The results are shown in "Table 3". From these results, the sheet-shaped cosmetic of Example 3 containing CAE has no unevenness in immersion during impregnation, which greatly contributes to the improvement of manufacturability. In addition, there is no burning when used. Example 3 shows that the combination of CAE and ethyl alcohol exhibits a favorable effect. When used in combination with CAE, the blending amount of ethyl alcohol is preferably 0 to 5% (mass percentage) based on the total amount of the lotion.

[0030]

[Table 3] * 1: Measured in the same manner as in Example 1.

Other examples of the sheet cosmetic of the present invention will be described below. The sheet-like cosmetics produced by impregnating the formulation stock solution having the following formulation by a conventional method are all excellent cosmetic sheets without the concern of uneven impregnation during production and scratching during use.

[0032] "Example 4: Skin-cleaning wipe-impregnated cosmetic sheet" Seat material: 100% rayon Lotion formulation: (1) Dipropylene glycol 7.0% (2) Polyethylene glycol 2.0 (3) Ethyl alcohol 10.0 (4) Oleyl alcohol 0.2 (5) Palmitic acid 0.1 (6) Sodium hydroxide 0.015 (7) N-coconut alkyl-β-aminopropion soda 0.02 (8) Sorbitan monooleate 0.2 (9) Tranexamic acid 1.0 (10) CAE 0.01 (11) Purified water Residue

[0033] "Example 5: Cosmetic sheet impregnated with wipe wipe for removing calluses" Sheet material: 55% pulp, 15% rayon, 10% polyester. Polyethylene 20% Lotion formulation: (1) Dipropylene glycol 2.0% (2) Dynamite glycerin 1.0 (3) Ethyl alcohol 8.0 (4) Sodium hexametaphosphate 0.01 (5) Oleic acid 0.1 (6) Potassium hydroxide 0.015 (7) 2-lauryl-N-carboxymethyl-N-hydroxyethyl-imidazo Linium betaine 0.01 (8) Loquat extract 0.1 (9) Trimethylglycine 1.0 (10) Citric acid 0.02 (11) Sodium citrate 0.05 (12) CAE 0.01 (13) Purified water Residue

[0034] "Examples 6 to 9: Whitening lotion-impregnated sheet cosmetics" -------------------------------------------------- --------------------- (Prescription) Example 6 Example 7 Example 8 Example 9 -------------------------------------------------- --------------------- L-ornithine hydrochloride 1.5 1.0 0.5 0.5 Ascorbic acid-0.5-- Tranexamic acid--0.5- Arbutin---0.5 Glycerin 5.0 5.0 5.0 5.0 5.0 Ethanol 55.0 55.0 55.0 55.0 Polyoxyethylene (60 mol)         Hydrogenated castor oil 2.0 2.0 2.0 2.0 CAE 0.03 0.03 0.03 0.03 Sodium hexametaphosphate Suitable amount Suitable amount Suitable amount Suitable amount Antioxidant Proper amount Proper amount Proper amount Proper amount Phenoxyethanol 0.3 0.3 0.3 0.3 Ion-exchanged water Residual Residual Residual -------------------------------------------------- --------------------- Sheet material: 100% cotton -------------------------------------------------- ---------------------

[0035] "Example 10: Emulsion impregnated cosmetic sheet" Sheet material: 55% pulp, 45% rayon Emulsion prescription Cetyl isooctanoate 1.0 Cyclomethicone 1.0 Acrylic acid / alkyl methacrylate copolymer 0.2 Carboxy vinyl polymer 0.05 Potassium hydroxide suitable amount Dipropylene glycol 5.0 Glycerin 3.0 Ethanol 7.0 Oat extract 0.1 Scutellaria extract 0.1 Dokudami extract 0.1 Aloe extract 0.1 Rose extract 0.1 CAE 0.1 Purified water residue

[0036] "Example 11: Emulsion impregnated cosmetic sheet" Sheet material: 100% cotton Emulsion prescription Squalane 1.0 Glyceryl trioctanoate 1.0 Dimethicone 0.2 Carboxy vinyl polymer 0.15 Potassium hydroxide suitable amount Glycerin 3.0 1,3-butylene glycol 5.0 Xylitol 1.0 Erythritol 1.0 Ethanol 8.0 Dipotassium glycyrrhizinate 0.05 CAE 1.0 Purified water residue

[0037] "Example 12: Whitening emulsion-impregnated cosmetic sheet" Sheet material: 80% rayon, 20% polyolefin Emulsion prescription Cetanol 2.2 Glyceryl monostearate 0.7 Polyoxyethylene glyceryl isostearate 0.6 Polyoxyethylene glycerin monostearate 0.3 Squalane 4.2 Jojoba oil 1.0 Macadamian nut oil 1.0 Safflower oil 0.2 Carboxy vinyl polymer 0.12 Potassium hydroxide suitable amount Glycerin 3.0 1,3-butylene glycol 5.0 Arbutin 3.0 CAE 1.0 Purified water residue

[0038] "Example 13: Cosmetic sheet impregnated with lotion" Seat material: 100% rayon Solubilized lotion formulation: (Alcohol phase)   95% ethyl alcohol 10.0   Polyoxyethylene hydrogenated castor oil 2.0   Propylene glycol 4.0   Oleyl alcohol 0.1   Lecithin 0.3 (Water phase)   Glycerin 5.0   Green tea extract 0.1   CAE 0.1   Ion-exchanged water residue   UV absorber suitable amount

[0039]

EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a sheet-like cosmetic composition which is capable of sufficiently preserving antiseptic properties during production and which is excellent in safety and manufacturability. That is, as compared with the case where the conventional preservative is used, a sheet-like cosmetic which is free from sticking can be obtained, and a sheet-like cosmetic that is safe for users with sensitive skin can be provided. Also, when a conventional preservative is used together, it is possible to reduce the blending amount so as not to cause sticking and to use it together. Further, it is possible to obtain a sheet-shaped cosmetic composition with less impregnation unevenness and high production efficiency.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeyuki Ogawa             2-2-1 Hayabuchi, Tsuzuki Ward, Yokohama City, Kanagawa Prefecture             Shiseido Research Center (Shin-Yokohama)             Within F-term (reference) 4C083 AA112 AA122 AB032 AB282                       AC022 AC082 AC102 AC122                       AC132 AC242 AC252 AC302                       AC392 AC422 AC432 AC442                       AC472 AC482 AC582 AC611                       AC612 AC622 AC712 AC902                       AD092 AD112 AD152 AD412                       AD532 AD642 CC04 CC23                       DD12

Claims (2)

[Claims] 1. A sheet-like cosmetic, wherein a sheet is impregnated with a liquid composition containing N-coconut oil fatty acid acyl L-arginine ethyl DL-pyrrolidone carboxylate. 2. The sheet-shaped cosmetic according to claim 1, wherein the liquid composition contains a moisturizer.