JP6759395B2 - Powdered skin cleanser - Google Patents

Description

The present invention relates to a powdered skin cleanser.

The powdered skin cleansing agent is prepared by mixing and crushing a cleansing agent and an inorganic powder or an organic powder serving as a builder, and is used for a cleansing pigment, a shampoo, a cleansing agent for a body, and the like. Since the powdered skin cleanser has less water than the liquid or gel, it is possible to add a component that is easily deactivated by water. In addition, it can be commercialized without adding preservatives and bactericides, and it is possible to provide products with higher safety.
However, when using powdered skin cleansing agent, it is necessary to take out the powdered skin cleansing agent from the container to the palm or sponge and whisk it, so if the powder is not cohesive, the powder will be scattered in places other than the intended place. It will scatter and become stressful for the user. That is, in powdered skin cleansing agents, basic performance such as foaming property (quickness of foaming, amount of foam), foam quality (fineness of foam, persistence of foam), and good skin feel during and after washing. In addition, there is a demand for development with added value of suppressing the scattering of powder.

By blending cationized dextran in the formulation, the applicant has high safety, improved solubility at the time of use, excellent foaming property, and also makes it rough when whipping with the palm of the hand. We have proposed a powdery skin cleansing agent that does not occur and has improved usability (Patent Document 1: Japanese Patent No. 471222). Further, N-acylglutamic acid or higher fatty acid salt, polyamino acid, and neutral amino acid are blended in a powdery cleaning composition having excellent foaming properties (Patent Document 2: Patent No. 4253687), N-acylglutamic acid. We have proposed a powdery cleaning agent containing a salt, branched glutamic acid having a cyclic structure, hydroxypropyl starch phosphoric acid, and polydextrose, which has excellent foam quality and foaming property (Patent Document 3: Patent No. 5662986).

Further, a powdered skin cleaning agent containing N-acylglutamate and fatty acid amide alkyldimethylamine oxide to improve the foaming speed and foam quality (Patent Document 4: Patent No. 5959232), N-acylglutamate and Powdered skin cleaning agent containing N-fatty acid acylaminoethyl-N-2-hydroxyethylglycine salt to improve foaming speed and foam quality (Patent Document 5: Japanese Patent No. 5952933), N-acylglutamate Proposed a powdery or granular skin cleaning agent containing a linear higher alcohol having 20 to 24 carbon atoms and having excellent foaming speed and a smooth feeling after washing (Patent Document 6: Patent No. 6054558). did.

However, there is a demand for further improvement in the performance of foaming speed, foam volume, and foam quality (fineness of foam and durability of foam).

On the other hand, as features other than foaming and foam quality, there is a demand for a powdered skin cleansing agent that does not have a taut feeling after being washed away, provides a natural moisturizing feeling as a skin feel, and suppresses powder scattering.
For example, by adding a specific amount of at least one excipient selected from sugars and clay minerals to a surfactant system composed of a fatty acid salt and an N-acylamino acid-based surfactant, hypoallergenic and good foam can be obtained. A powdery composition for body cleaning, which has good quality and a good skin feeling after cleaning, has no "foam" or "mamako" during use, and has good stability, has been proposed (Patent Document 7). : Japanese Patent No. 4834456).

In addition, N-acylaspartic acid or a salt thereof, which is excellent in foaming property and detergency during cleaning, usability during cleaning and after cleaning, and excellent in powder fluidity without scattering in powdered cleaning agent. A solid cleaning agent composition containing an N-acylaspartic acid-based surfactant as a main component has been proposed (Patent Document 8: JP-A-2005-325244).
However, further improvement in performance is required for quick foaming property, foam amount, foam quality, clean feeling after washing, tightness after towel drying, and powder scattering.

The present invention is a dosage form of a powdered skin cleanser, which further improves the performance of foaming speed, foam amount, and foam quality (fineness of texture and durability of foam), and does not feel taut after rinsing. The pursuit is to realize a powdered skin cleansing agent with added value such as a natural moisturizing feeling and suppression of powder scattering.

Japanese Patent No. 471222 Japanese Patent No. 4253687 Japanese Patent No. 5662986 Japanese Patent No. 5959232 Japanese Patent No. 5952933 Japanese Patent No. 6054558 Japanese Patent No. 4834456 Japanese Unexamined Patent Publication No. 2005-325244

The present invention is excellent in the speed of foaming, the amount of foam, and the quality of foam (fineness of texture and sustainability of foam), and a natural moisturizing feeling is obtained without feeling a taut feeling after washing, and powder scattering is suppressed. It is an object of the present invention to provide a powdered skin cleansing agent having added value such as being used.

The means for solving the problem of the present invention is as follows.
1. 1. The following components (A) to (E);
A powdered skin cleaning agent containing (A) N-acylglycine salt (B) N-acylglutamic acid (C) pullulan (D) dextrin (E) mannitol.
2. 2. 1. The mass ratio ((A) / (B)) of the component (A) to the component (B) is 1 or more and 5 or less. The powdered skin cleanser described in.
3. 3. The mass ratio (((A) + (B)) / (C)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (C) is 2. It is characterized in that it is 13 or less. Or 2. The powdered skin cleanser described in.
4. The mass ratio (((A) + (B)) / (D)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (D) is 2. It is characterized in that it is 13 or less. ~ 3. The powdered skin cleansing agent according to any one of the above items.
5. The mass ratio (((A) + (B)) / (E)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (E) is 1. It is characterized by being 4 or less. ~ 4. The powdered skin cleansing agent according to any one of the above items.

The powdered skin cleansing agent of the present invention has further improved foaming speed, foam amount, and foam quality (fineness and durability of foam) as compared with the conventional powdered skin cleansing agent, and has been washed away. A natural moisturizing sensation can be obtained without feeling any tension afterwards. The powdered skin cleanser needs to be whipped before use, but the powdered skin cleanser of the present invention has good powder cohesion and does not scatter, so that the user feels stress when taking out the used amount from the container. It can be foamed without foaming and is excellent from the viewpoint of user friendliness.

The powdered skin cleanser of the present invention contains the following components (A) to (E);
It is characterized by containing (A) N-acylglycine salt (B) N-acylglutamic acid (C) pullulan (D) dextrin (E) mannitol.

The powdered skin cleanser of the present invention can be whipped without stress because the powder does not scatter when the powder is taken out and whipped. In addition, a refreshing feeling of washing can be obtained, and a moisturizing feeling can be obtained without feeling a feeling of tension after towel drying.
It can be said that a clean and clean feeling is a skin feel that is not sticky, slimy, or rubbed. In the dosage form of powdered skin cleanser, stickiness or sliminess may be felt depending on the surfactant or moisturizer to be blended, but it is generally not considered to be a preferable feel. The powdered skin cleansing agent is required to have a clean and clean feeling without stickiness or sliminess, as a reminder of the feeling that the skin becomes smooth and beautiful after washing.
The feeling of tension can be said to be the feeling of pulling the skin because there is no moisture or oil in the skin and there is little moisture. In the dosage form of powdered skin cleansing agent, depending on the surfactant and moisturizer to be blended, a clean finish can be obtained, but the feeling of tension after towel drying causes a low evaluation from users. There is. The powdered skin cleansing agent is required to have both a clean feeling after washing and a moisturizing feeling after towel drying.

(A) N-Acylglycine salt The acyl group in the N-acylglycine salt used in the present invention includes an octanoyl group, a decanoyyl group, a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, an oleoil group, a linole oil group, and a coconut oil. Examples thereof include fatty acid acyl groups (coconut groups). Examples of the salt include alkali metal salts such as sodium and potassium, alkanolamine salts such as triethanolamine, and basic amino acid salts such as lysine and arginine. Although not particularly limited, N-coconut fatty acid acylglycine potassium is preferable.

(B) N-Acyl Glutamate The N-acyl glutamate used in the present invention includes N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, and N-oleoyl glutamate. And so on. In addition, as a mixture thereof, N- (coconut fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate, N-coconut oil fatty acid acyl glutamate, N-palm oil fatty acid acyl glutamate, N-hydrogenated beef tallow fatty acid acyl glutamate, etc. Can be mentioned. Examples of the salt include alkali metal salts such as sodium and potassium, alkanolamine salts such as triethanolamine, and basic amino acid salts such as lysine and arginine. Although not particularly limited, sodium N-lauroyl glutamate is preferable.

In the powdered skin cleaning agent of the present invention, the ratio of the total mass of (A) N-acylglycine salt and (B) N-acylglutamate A) to the total mass of the components (A) to (E) is 30% by mass. It is preferably 70% by mass or more, more preferably 40% by mass or more and 60% by mass or less, and further preferably 45% by mass or more and 55% by mass or less.
The mass ratio (N-acylglycine salt / N-acylglutamate, (A) / (B)) of (A) N-acylglycine salt and (B) N-acylglutamate used in the present invention is 1 or more. It is preferably 5 or less, more preferably 1 or more and 4 or less.

(C) Pullulan Pullulan is a water-soluble polysaccharide in which maltotriose is repeatedly linked in a chain with α-1,6 bonds, and has excellent water retention capacity, and is widely used in foods and cosmetics. The pullulan used in the present invention is already commercially available as a raw material for cosmetics and can be used without any limitation. In the present invention, the blending amount of pullulan is not particularly limited, but the total mass of (A) N-acylglycine salt and (B) N-acylglutamic acid salt and the mass ratio of (C) pullulan (( N-acylglycine salt + N-acylglutamate) / pullulan, ((A) + (B)) / (C)) is preferably 2 or more and 13 or less, and more preferably 3 or more and 10 or less.

(D) Dextrin The dextrin in the present invention represents a starch hydrolyzate obtained by hydrolyzing starch with an acid or an enzyme, and there are various dextrins having different molecular weights. In the present invention, when dextrin is blended, performances such as quick foaming property, amount of foam, and foam quality are improved. In the present invention, the amount of dextrin to be blended is not particularly limited, but the blending amount in which this effect can be expected is not particularly limited, but (A) N-acylglycine salt and (B) N. -The total mass of acylglutamic acid and the mass ratio of (D) dextrin ((N-acylglycine salt + N-acylglutamate) / dextrin, ((A) + (B)) / (D)) is 2 or more. It is preferably 13 or less, more preferably 3 or more and 10 or less.

(E) Mannitol Mannitol is a hexavalent sugar alcohol widely distributed in nature and is an isomer of sorbitol. While sorbitol is hygroscopic, mannitol is characterized by almost no hygroscopicity. The mannitol used in the present invention is already commercially available as a raw material for cosmetics and can be used without any limitation. In the present invention, by blending mannitol, the effect of improving the quick foaming property is exhibited. In the present invention, the blending amount of mannitol is not particularly limited, but the total mass of (A) N-acylglycine salt and (B) N-acylglutamic acid salt and the mass ratio of (E) mannitol (() N-acylglycine salt + N-acylglutamic acid) / mannitol, ((A) + (B)) / (E)) is preferably 1 or more and 4 or less, and more preferably 1 or more and 3 or less.

[Other ingredients]
The powdered skin detergent of the present invention contains an anionic surfactant other than N-acylglutamic acid and N-acylglycine salt, an amphoteric surfactant, a cationic surfactant, and a nonionic surfactant as surfactants. Can be done. Examples of anionic surfactants include higher fatty acid salts, N-acylalanine salts, N-acylmethyl taurine salts, N-acyl citeionates, monoalkyl phosphates, ether carboxylates, alkyl sulfonates, and sulfosuccinates. Examples thereof include fatty acid amide alkyldimethylamine oxides. Examples of the amphoteric surfactant include a carbobetaine type surfactant, a sulfobetaine type surfactant, an amide betaine type surfactant, an imidazoline type surfactant and the like.

The powdered skin cleaning agent of the present invention includes sugars, sugar alcohols, waxes, organic powders, inorganic powders, polymers, preservatives, sequestrants, UV absorbers, UV blockers, moisturizers, etc. It can contain fragrances, pH adjusters, desiccants and the like. In addition, the powdered skin cleansing agent of the present invention may contain other medicinal properties and physiologically active ingredients.

In addition to mannitol, sugars and sugar alcohols include glucose, sorbitol, mannose, galactose, galactitol, maltose, martitol, trehalose, erythrose, erythritol, xylitol, xylitol, sucrose, lactose, lactitol, and difractose anhydrate. Can be mentioned.

Examples of waxes include waxes such as rice wax, carnauba wax, and candelilla wax.
Examples of the organic powder include polyethylene powder, polystyrene powder, polymethyl (meth) acrylate powder, nylon powder, polyurethane powder, agar powder, cork powder, starch and the like.
Examples of the inorganic powder include talc, kaolin, silica, mica, zeolite, bentonite, titanium dioxide and the like.

In addition to pullulan and dextrin, polymers include gum arabic, tragacant gum, galactan, guar gum, carrageenan, pectin, xanthan gum, quince seed, dextran, cationized dextran, carboxymethyl starch, collagen, casein, gelatin methyl cellulose, and methyl hydroxypropyl. Examples thereof include cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, sodium alginate, and carboxyvinyl polymer.

Examples of the sequestrant include edetates such as disodium ethylenediaminetetraacetate, edetic acid, and sodium edetate.
Examples of medicinal and physiologically active ingredients include L-ascorbic acid, L-ascorbic acid phosphate ester, L-ascorbic acid monopalmitic acid ester, L-ascorbic acid dipalmitic acid ester, and L-ascorbic acid-2-glucoside. Vitamin C and other whitening agents such as glutathione and yukinoshita extract, skin activators such as royal jelly, blood circulation promoters such as capsaicin, zingeron, cantalistinki, ictamol, caffeine, tannic acid, γ-orizanol, glycyrrhizic acid derivatives , Glycyrrhetinic acid derivative, anti-inflammatory agent such as azulene, enzyme such as protease, maltose sucrose condensate of indigenous bacteria control agent, lysozyme chloride and the like.

The cleaning agent of the present invention is in powder form and can be used for cleaning the face, head and body.

As Examples 1 to 5 and Comparative Examples 1 to 8, each component was blended in the mass ratio shown in Table 1 to prepare a powdered skin cleanser. Each component used is as follows.
Cocoyl glycine potassium (Ajinomoto Co., Inc. "Amylite GCK-11")
Sodium lauroyl glutamate (Amino Surfact ALMS-P1 manufactured by Asahi Kasei Finechem Co., Ltd.)
Pullulan (Hayashibara Co., Ltd. "Pullulan fine powder for cosmetics")
Dextrin ("Nippon Pharmacopoeia Dextrin Amikol No. 10" manufactured by Nissho Chemical Co., Ltd.)
Mannitol ("Marine Crystal" manufactured by Mitsubishi Corporation Food Tech Co., Ltd.)
Pyroferrite ("Japanese Pharmacopoeia Kaolin" manufactured by Katsumitsuyama Mining Co., Ltd.)
Cornstarch ("Cornstarch ST-C" manufactured by Nissho Chemical Co., Ltd.)
Pyroferrite and cornstarch are used only for mass adjustment when preparing the composition ratio of the components, and do not affect the present invention.

The following 7 items of the prepared powdered skin cleanser: quick foaming property, foam volume, foam persistence, fineness of foam, clean feeling after washing, no feeling of tension after towel drying, and suppression of powder scattering. It was evaluated according to the criteria of. The results of each evaluation are shown in Table 1.
[Fast foaming]
50 mg of the prepared powdered skin cleaning agent was weighed into an IWAKI threaded test tube (TST-SCR16-125, test tube having an outer diameter of 16 mm and a length of 125 mm), 3 mL of purified water was added, and the test tube was shaken up and down 10 times. Immediately after, the height of the foam was measured, and the quick foaming property was evaluated according to the following criteria.
⊚: 6.0 cm or more ○: 5.5 cm or more and less than 6.0 cm Δ: 5.0 cm or more and less than 5.5 cm ×: less than 5.0 cm

[Amount of foam]
200 mL of a 1 wt% aqueous solution of the prepared powdered skin cleanser was weighed in a 1000 mL beaker, the amount of foam formed by the reverse stirring method (stirring time: 20 seconds x 3 times) was measured, and the amount of foam was evaluated according to the following criteria. ..
⊚: 650 mL or more ○: 600 mL or more and less than 650 mL Δ: 550 mL or more and less than 600 mL ×: less than 550 mL

[Foam persistence]
The amount of bubbles formed under the conditions used in the evaluation of the amount of bubbles after 1 hour was measured, and the duration of the bubbles was calculated by the following formula.
Persistence rate [%] = Amount of bubbles formed by the inversion stirring method after standing for 1 hour / Amount of bubbles immediately after being formed by the inversion stirring method × 100
Foam persistence was evaluated according to the following criteria.
⊚: Duration 95% or more ○: 90% or more and less than 95% Δ: 85% or more and less than 90% ×: Less than 85%

[Foam fineness]
Take 1 g of the prepared powdered skin cleanser, add about 2 to 3 mL of tap water, whisk for about 20 seconds by rubbing both hands, and add about 2 to 3 mL of tap water to firmly entrain air in the foam. I whisked. The total whipping operation time was 1 minute. One trained professional panelist visually evaluated the fineness of the foam formed by the whipping operation according to the following criteria.
◎: Very fine texture 〇: Slightly fine texture △: Slightly rough texture ×: Very rough texture

[Clean and clean feeling]
Take 1 g of the prepared powdered skin cleanser, add about 2 to 3 mL of tap water, whisk for about 20 seconds by rubbing both hands, and add about 2 to 3 mL of tap water to firmly entrain air in the foam. I whisked. The total whipping operation time was 1 minute.
The bubbles were washed away while rubbing both hands with running tap water, and the feel felt by the palm was evaluated until after all the bubbles had run off. One trained professional panelist evaluated according to the following criteria.
○: Not slimy and tight △: Slightly slimy but tight ×: Slimy and not tight

[No feeling of tension after towel drying]
Take 1 g of the prepared powdered skin cleanser, add about 2 to 3 mL of tap water, whisk for about 20 seconds by rubbing both hands, and add about 2 to 3 mL of tap water to firmly entrain air in the foam. I whisked. The total whipping operation time was 1 minute.
The bubbles were washed away while rubbing both hands with running tap water, and after all the bubbles had flowed off, the water remaining on the hands was removed by tapping lightly with a towel three times to evaluate the feel of the hands. One trained professional panelist evaluated according to the following criteria.
◎: Not taut and moisturizing 〇: Not taut and slightly moisturizing △: Slightly taut ×: Very taut

[Suppression of powder scattering]
10 g of the prepared powdered skin cleanser was placed in a plastic bag, and the scattering of the bulk when grasped by pinching with the thumb and index finger was evaluated. The evaluation was made according to the following criteria.
○: Bulk can be grasped firmly △: Bulk can be grasped, but slightly powdered ×: Bulk can not be grasped

[Evaluation results]

The powdered skin cleansing agents of Examples 1 to 5 containing (A) potassium cocoylglycine, (B) sodium lauroyl glutamate, (C) pullulan, (D) dextrin, and (E) mannitol are all quick-foaming and foamy. It was excellent in the amount, the durability of the foam, the fineness of the foam, the clean feeling of washing, the lack of tension after towel drying, and the suppression of powder scattering.

In Comparative Example 1 in which the mass was adjusted with (A) potassium cocoylglycine and (B) sodium lauroyl glutamate, the foaming property, foam persistence, foam fineness, and cleanliness were compared with Examples 1 to 5. It was inferior in the evaluation items of the feeling of washing and the scattering of powder. Further, in Comparative Example 2 in which the mass was adjusted with (A) cocoylglycine potassium excluding (B) sodium lauroyl glutamate, the evaluation items of quick foaming property and taut feeling after towel drying were higher than those of Examples 1 to 5. It was inferior.
Compared with Examples 1 to 5, in Comparative Example 3 containing cornstarch instead of (C) pullulan, the evaluation items of quick foaming property, fineness of foam, and powder scattering were excluding (C) pullulan (E). In Comparative Example 4 in which the mass was adjusted with mannitol, the evaluation items of quick foaming property, fineness of foam, clean feeling of washing, and scattering of powder were inferior.

Compared with Examples 1 to 5, Comparative Example 5 containing cornstarch instead of (D) dextrin had evaluation items of fast foaming property, foam amount, foam persistence, foam fineness, and clean finish. In Comparative Example 6 in which the mass was adjusted with (E) mannitol except for (D) dextrin, the evaluation items of fast foaming property, foam persistence, foam fineness, and clean wash feeling were inferior.
Compared with Examples 1 to 5, Comparative Example 7 containing cornstarch instead of (E) mannitol has quick foaming property, foam amount, foam persistence, fineness of foam, tightness after towel drying, and powder. Comparative Example 8 in which the evaluation items of scattering were adjusted with (C) pullulan and (D) dextrin except for (E) mannitol were inferior in the evaluation items of quick foaming property and powder scattering.

[Prescription example 1] Facial cleansing powder component content (mass%)
N-coconut oil fatty acid acylglycine potassium 20
Sodium lauroyl glutamate 5
Pullulan 5
Dextrin 5
Mannitol 15
Lauramide propylamine oxide 1
Stearic acid 1
Glucose 10
Agar powder 5
Charcoal 0.1
Talc residue

[Prescription example 2] Facial cleansing powder component content (mass%)
N-coconut oil fatty acid acylglycine potassium 30
N-coconut oil fatty acid sodium acyl glutamate 20
Pullulan 5
Dextrin 5
Mannitol 15
Potassium myristate 2
Cocamidopropylamine oxide 1
Maltitol 10
Cationated dextran-2 0.1
Behenyl alcohol 2
Talc residue

[Prescription example 3] Face wash powder
Ingredient content (mass%)
N-coconut oil fatty acid acylglycine potassium 30
Sodium lauroyl glutamate 5
Pullulan 5
Dextrin 5
Mannitol 20
Potassium myristate 2
Maltitol 10
Silica 5
Behenyl alcohol 3
Hydroxypropyl starch phosphate 2
Protease 0.1
Talc residue

Claims (5)

The following components (A) to (E);
It contains (A) N-acylglycine salt (B) N-acylglutamic acid (C) pullulan (D) dextrin (E) mannitol .
The ratio of the total mass of the components (A) and (B) to the total mass of the components (A) to (E) is 30% by mass or more and 70% by mass or less.
The acyl group of the component (A) is any one of an octanoyl group, a decanoyyl group, a lauroyl group, a myristoylation group, a palmitoyl group, a stearoyl group, an oleoil group, a linoleoyl group, and a cocoyl group.
The component (B) is N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, N-oleoyl glutamate, N- (coconut fatty acid / palm fatty acid / sunflower fatty acid) acyl. A powdered skin cleaning agent (provided to be granulated), which is one of glutamate, N-coconut oil fatty acid acyl glutamate, N-palm oil fatty acid acyl glutamate, and N-hydrogenated beef tallow fatty acid acyl glutamate. Excluding the used skin cleaning agent). The powdered skin cleansing agent according to claim 1, wherein the mass ratio ((A) / (B)) of the component (A) to the component (B) is 1 or more and 5 or less (however, granulated). Excluding skin cleansers). The mass ratio (((A) + (B)) / (C)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (C) is 2. The powdered skin cleansing agent according to claim 1 or 2, which is 13 or less (excluding the granulated skin cleansing agent). The mass ratio (((A) + (B)) / (D)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (D) is 2. The powdered skin cleansing agent according to any one of claims 1 to 3, which is 13 or less (however, excluding the granulated skin cleansing agent). The mass ratio (((A) + (B)) / (E)) of the total mass of the component (A) and the component (B) ((A) + (B)) to the mass of the component (E) is 1. The powdered skin cleansing agent according to any one of claims 1 to 4, which is 4 or less (excluding the granulated skin cleansing agent).