JP5952932B1 - Powder or granular skin cleansing composition - Google Patents

Abstract

Disclosed is a powdery or granular skin cleansing composition containing N-acyl glutamate, which provides a cleaning composition with improved foaming speed and foam quality. A powdery or granular skin cleansing composition comprising an N-acylglutamate and a fatty acid amidoalkyldimethylamine oxide. [Selection] Figure 1

Description

  The present invention relates to a powder or granular skin cleansing composition.

  Conventionally, a powder skin cleanser is prepared by mixing and pulverizing a cleaning agent and an inorganic powder or an organic powder to be a builder. It is prepared by granulation under optimum conditions. Compared to liquid and gel skin cleansers, powdered or granular skin cleansers do not contain moisture and can be used without preservatives or disinfectants. Products can be provided. However, powdered or granular skin cleansers have the disadvantage that when they are dissolved in water with a palm or sponge, they do not dissolve evenly, and a lump called “dama” or “mushroom” is formed. It was. In addition, it has been pointed out that the foaming property is inferior to liquid or gel-like skin cleansing agents. In particular, N-acyl glutamate, which is a cleaning component used in powdered skin cleansers or granular skin cleansers, is weakly acidic and causes little irritation to the skin. For this reason, while being frequently used as a highly safe cleaning component, it has been pointed out as a drawback that it is difficult to dissolve in water and is inferior in foaming properties when used as a powdery cleaning material.

The present applicant can improve the solubility of the powdery detergent containing N-acylglutamate at the time of use by incorporating cationized dextran in the formulation of the powdered skin detergent. A powdery skin cleanser that has excellent foaming properties and has improved usability without causing roughness when foaming with a palm or the like has been proposed (Patent Document 1: Japanese Patent No. 4712222).
In addition, a powdery detergent composition excellent in foaming in which N-acyl glutamate or higher fatty acid salt, polyamino acid, and neutral amino acid are blended has been proposed (Patent Document 2: Japanese Patent No. 4253687).
Furthermore, a powdery cleaning agent excellent in foam quality and foaming properties, which is a blend of N-acyl glutamate and a branched glucan having a cyclic structure, hydroxypropyl starch phosphate, and polydextrose (Patent Document 3: Patent) No. 5622986).
However, for powder skin cleansers and granular skin cleansers, further improvement in performance is required in terms of foaming speed and foam quality (foam feel).
On the other hand, the fatty acid amidoalkyldimethylamine oxide used in the present invention is supplied as an aqueous solution and blended in a liquid skin cleanser. There is no prior art in which fatty acid amidoalkyl dimethylamine oxide is powdered, and there are no examples of blending it into powdered skin cleansers or granular skin cleansers because it is difficult to powder.

Japanese Patent No. 4712222 Japanese Patent No. 4253687 Japanese Patent No. 5562986

  This invention makes it a subject to provide the cleaning composition which improved the speed of foaming and the foam quality in the powdery or granular skin cleaning composition which mix | blended N-acyl glutamate.

  The inventor of the present application, as a result of studying a number of combinations of foaming and foam quality of a powdered skin cleanser containing N-acylglutamate and other surfactants, Alternatively, the present invention has been completed by finding that the foaming and foam quality of the granular skin cleansing agent are remarkably improved.

The present invention has the following configuration.
(1) A powdery or granular skin cleansing composition comprising N-acyl glutamate and a fatty acid amidoalkyldimethylamine oxide.
(2) The skin cleansing composition as described in (1), wherein N-acyl glutamate and fatty acid amidoalkyldimethylamine oxide are blended in a mass ratio of 100: 1 to 1: 1.
(3) The skin cleansing composition according to either (1) or (2), wherein the fatty acid amidoalkyldimethylamine oxide is lauramidopropylamine oxide.
(4) A method for producing a powdery or granular skin cleansing composition, which comprises blending lyophilized powder of lauramidopropylamine oxide and N-acyl glutamate .

  According to the present invention, it is possible to provide a powdery or granular skin cleansing composition which forms foam with a fast foaming and excellent foam quality.

It is a graph which shows the result of the fall confirmation test of the surface tension by N-acyl glutamate and fatty acid amide alkyl dimethylamine oxide.

The present invention relates to a powdery or granular skin cleansing composition comprising N-acylglutamate and a fatty acid amidoalkyldimethylamine oxide.
Examples of the N-acyl glutamate used in the present invention include N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, N-oleoyl glutamate and the like. Moreover, N- (palm 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 and the like as a mixture thereof Is 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. N-acylglutamate is known as a cleansing ingredient that is less irritating to the skin. In the practice of the present invention, these N-acyl glutamic acids are all equivalent, but N- (palm fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate is particularly preferred in view of safety and usability.
The amount of N-acyl glutamate used in the present invention is preferably 1 to 99% by mass, more preferably 10 to 50% by mass, and particularly preferably 15 to 40% by mass in the powdery or granular skin cleansing composition. .

  The fatty acid amidoalkyldimethylamine oxide used in the present invention is a compound represented by Formula 1.

なお、式中のＲ₁は炭素数７〜１７のアルキル基、Ｒ₂は炭素数１〜５のアルキレン基をあらわす。

In the formula, R ₁ represents an alkyl group having 7 to 17 carbon atoms, and R ₂ represents an alkylene group having 1 to 5 carbon atoms.

R _{1 in} Formula 1 of the fatty acid amidoalkyldimethylamine oxide used in the present invention is an alkyl group having 7 to 17 carbon atoms, preferably an alkyl group having 9 to 13 carbon atoms. R ₂ is an alkylene group having 1 to 5 carbon atoms, preferably an alkylene group having 2 to 4 carbon atoms.
Fatty acid amidoalkyl dimethylamine oxide is weakly cationic (semipolar). In an acidic aqueous solution, it exhibits the properties of a cationic surfactant, and in a basic aqueous solution, it exhibits the behavior of a nonionic surfactant. Conventionally, it has been used as a kitchen detergent base, shampoo base, foam stabilizer, thickener, antistatic agent, and hair dyeing assistant. Fatty acid amidoalkyldimethylamine oxide is commercially available as a cosmetic raw material, and this commercially available product can be used in the present invention. For example, display name lauramidopropylamine oxide (compound name: lauramide amidopropyl dimethylamine oxide: trade name: “softazoline LAO-C” manufactured by Kawaken Fine Chemical Co., Ltd.), display name myristamidopropylamine oxide (compound name: myristin) Acid amidopropyldimethylamine oxide), a mixture of lauramidopropylamine oxide and myristamidopropylamine oxide (trade name: “AMMONYX LMDO” manufactured by Stepan), display name cocamidopropylamine oxide (compound name: palm oil fatty acid amidopropyldimethyl) Amine oxide: trade name: “AMMONYX CDOSPECIAL” manufactured by Stepan). However, since these fatty acid amidoalkyldimethylamine oxides are commercially available in the form of an aqueous solution, they must be pulverized by some means in order to be used in the present invention. In order to make powder, it is spray-dried or freeze-dried.
Thus, the fatty acid amidoalkyldimethylamine oxide can be made into a form suitable for the present invention only after being powdered. In the practice of the present invention, these fatty acid amidoalkyldimethylamine oxides are all equivalent, but lauramidopropylamine oxide is particularly preferred from the viewpoint of safety and usability.
The blended amount of the powdered fatty acid amidoalkyldimethylamine oxide used in the present invention is preferably 0.1 to 50% by mass, more preferably 0.5 to 10% by mass, and 0.5 to 4% by mass per composition. Particularly preferred.

  In the present invention, the blending ratio of N-acyl glutamate which is a cleaning component and fatty acid amide alkyl dimethylamine oxide is preferably 100: 1 to 1: 1, more preferably 80: 1 to 8: 1, and 50: 1 to 8: 1 is particularly preferred. With this blending ratio, when a powdery or granular cleaning composition is foamed for skin cleaning, it can be quickly foamed, and foamy foam suitable for face washing and the like is formed. It works effectively on washing and face washing.

In addition to N-acyl glutamate and fatty acid amide alkyl dimethylamine oxide, an anionic surfactant and an amphoteric surfactant that do not adversely affect the effect of the present invention are included in the skin cleansing composition of the present invention. , Cationic surfactants, and nonionic surfactants can be appropriately blended.
Anionic surfactants include higher fatty acid salts, N-acylalanine salts, N-acylmethyl taurate salts, N-acyl isethionate salts, N-acyl glycine salts, monoalkyl phosphates, ether carboxylates, alkyl sulfones. Acid salts, sulfosuccinates and the like. Examples of amphoteric surfactants include carbobetaine surfactants, sulfobetaine surfactants, amide betaine surfactants, and imidazoline surfactants.

  The powdery or granular skin cleansing composition of the present invention includes sugars, sugar alcohols, organic powders, inorganic powders, polymers, preservatives, sequestering agents, UV absorbers, UV blockers. , Humectants, fragrances, pH adjusters, desiccants, and the like. In addition, other medicinal ingredients and physiologically active ingredients can be contained.

  Examples of sugars and sugar alcohols include glucose, sorbitol, mannose, mannitol, galactose, galactitol, maltose, maltitol, trehalose, erythrose, erythritol, xylose, xylitol, sucrose, lactose, lactitol, difructose anhydride, etc. It is done.

Examples of the organic powder include polyethylene powder, polystyrene powder, polymethyl methacrylate powder, nylon powder, polyurethane powder, agar powder, cork powder, and starch.
Examples of the inorganic powder include talc, kaolin, silica, mica, zeolite, bentonite, and titanium dioxide.

Examples of polymers include gum arabic, gum tragacanth, galactan, guar gum, carrageenan, pectin, xanthan gum, quince seed, dextran, cationized dextran, pullulan, carboxymethyl starch, collagen, casein, gelatin , methylcellulose, methylhydroxypropylcellulose, hydroxy Examples thereof include ethyl cellulose, sodium carboxymethyl cellulose (CMC), hydroxypropyl methyl cellulose, sodium alginate, carboxyvinyl polymer (such as CARBOPOL).

  Examples of preservatives include methyl paraben and ethyl paraben.

Examples of the sequestering agent include edetates such as disodium ethylenediaminetetraacetate, edetic acid, and sodium edetate.
Medicinal components include vitamin C such as L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, L-ascorbic acid-2-glucoside, etc. , Glutathione, yukinoshita extract whitening agent, royal jelly, skin activator such as beech tree extract, capsaicin, gingerone, cantalis tincture, ictamol, caffeine, tannic acid γ-oryzanol blood circulation promoter, glycyrrhizic acid derivative , Glycyrrhetinic acid derivatives, anti-inflammatory agents such as azulene, maltose sucrose condensate of resident bacteria control agent, lysozyme chloride and the like.

In the present invention, the effects of the present invention can be further enhanced by further blending a polyamino acid. The polyamino acid is not particularly limited as long as it is a condensation polymer obtained by condensation polymerization of one or more amino acids having an amino group and a carboxyl group in the same molecule by an acid amide bond. Of the obtained polyamino acids, polyamino acids having a degree of polymerization of about 30 to 700 are preferably used in the present invention.
The polyamino acid preferably used in the present invention is a homopolymer obtained by condensation polymerization of one kind of amino acid, and examples of such polyamino acid include polylysine, polyornithine, polyglutamic acid and the like.

  In the present invention, the foamability can be enhanced by further adding a neutral amino acid. The neutral amino acids used in the present invention are aliphatic amino acids, monoaminomonocarboxylic acids glycine, alanine, valine, leucine, isoleucine, aliphatic amino acids, oxyamino acids serine, threonine, aliphatic amino acids Examples include sulfur-containing amino acids cysteine, cystine, methionine, amino acids with amide groups glutamine, asparagine, aromatic amino acids phenylalanine, tyrosine, amino acids with imino groups, proline, and oxyproline. It is done. Among the neutral amino acids, aliphatic amino acids and oxyamino acids serine and threonine are preferable, and serine is particularly preferable.

Moreover, in this invention, cyclic structure holding branched glucan, hydroxypropyl starch phosphate, polydextrose, etc. can be mix | blended. The cyclic structure-containing branched glucan used in the present invention is a compound in which a part of the branched glucan structure forms a ring, and can be produced by a production method described in JP2012-120471A. Specifically, a branching enzyme is allowed to act on a branched glucan, and then a 4-α-glucanotransferase is allowed to act, or a branching glucan is allowed to act on a 4-α-glucanotransferase, and then a branching enzyme is allowed to act. Alternatively, a branched glucan having a cyclic structure can be produced by allowing a branching enzyme and 4-α-glucanotransferase to act simultaneously on the branched glucan. Examples of the cyclic structure-containing branched glucan used in the present invention include “cluster dextrin” manufactured by Nippon Shokuhin Kako Co., Ltd.
Hydroxyalkyl starch phosphoric acid is obtained by phosphoric acid-crosslinked hydroxyalkyl starch. Hydroxyalkyl starch is obtained by reacting starch with an alkylene oxide such as ethylene oxide or propylene oxide. Examples of the hydroxyalkyl starch phosphate include hydroxypropyl starch phosphate manufactured by Akzo Nobel Co., Ltd., and trade name “STRUCTUREXL”.
Polydextrose is an indigestible water-soluble dietary fiber, and is obtained by reacting glucose, sorbitol, and citric acid. Commercially available products can be used as polydextrose, and examples thereof include a trade name “LITES ULTRA” manufactured by Danisco Japan Co., Ltd.

The skin cleansing composition of the present invention is in the form of powder or granules. The composition of the powder raw material was sieved beforehand by mixing by a conventional method the powder raw material to adjust the particle size can be prepared. In order to obtain a granular composition, it can be obtained by granulating the uniformly mixed powder composition while spraying with water or alcohol as a binder, and further sieving to adjust the particle size. .
The skin cleansing composition of the present invention can be used for washing the face and body after foaming while dissolving with water or hot water.

Hereinafter, the present invention will be further described with reference to Examples, Comparative Examples and Test Examples.
<Preparation of powdery skin cleansing composition>
1. Preparation of Powdered Fatty Acid Amide Alkyldimethylamine Oxide Fatty acid amidoalkyldimethylamine oxide is a surfactant developed for liquid shampoos and detergents, and only liquid solutions are commercially available. Therefore, in order to pulverize commercially available liquid fatty acid amidoalkyldimethylamine oxide, pulverization by lyophilization was attempted.
After obtaining a commercially available 30% aqueous solution of lauramidopropylamine oxide (trade name: “SOFTAZOLINE LAO-C” manufactured by Kawaken Fine Chemical Co., Ltd.) and freezing this solution using a methanol bath at −40 ° C. A lauramidopropylamine oxide powder was obtained by lyophilization using a freeze-dryer FDU-2100 (EYELA) for 24 hours under a reduced pressure of 15 Pa or less.

2. Preparation of Powdered Skin Cleansing Composition Similar to the compositions of Examples 1-4 of the present invention and Comparative Example 1 (prior art) not containing lauramidopropylamine oxide, semipolar lauramidopropylamine oxide Composition of Comparative Example 3 in which the semipolar surfactant lauramine oxide, which is said to have a surfactant activity, was blended, Comparative Example 2 in which the amphoteric surfactant sodium lauriminodiacetate and cocamidopropyl betaine were blended, and Comparative Example 4 Table 1 shows the composition of Comparative Example 5 in which all of the product, sodium acylglutamate was replaced with lauramidopropylamine oxide. Each powder component used for blending was sieved in advance to adjust the particle size, and the powder component was mixed to prepare a powdery skin cleansing composition. In addition, the lauramine oxide (brand name: "Amogen AOL" Daiichi Kogyo Seiyaku Co., Ltd. product) used for the comparative example used what pulverized the liquid commercial item using the freeze-drying apparatus.

<Evaluation test of powdery skin cleansing composition>
The powdery skin cleansing composition of Examples 1 to 4 blended with lauramidopropylamine oxide, the powdery skin cleansing composition of Comparative Example 1 without blending lauramidopropylamine oxide (product of the prior art), Laura Comparative Examples 2, 3 and 4 powdered skin cleansing compositions, in which N- (palm fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate sodium is all lauramidopropylamine About the composition for powdery skin washing | cleaning of the comparative example 5 substituted by oxide, the sensory evaluation test by the expert expert sensory expert (special panelist) was done about the following evaluation items.

1. Evaluation of the speed of foaming It evaluated by carrying out foaming operation by the following method by 10 expert panelists. Take 0.6 g of each powdery skin cleansing composition on the palm, add about 2 to 3 mL of tap water, whipping for about 30 seconds so that both hands are rubbed, and then whipping firmly so that air is involved in the foam I do.
Evaluation was based on the speed of foaming of the composition for skin cleaning of Comparative Example 1 (conventional product), and the following scores were assigned.
2 points: Foaming is fast.
1 point: The speed of foaming does not change.
0 point: Slow foaming.

The average value of the scores of 10 professional panelists was obtained, and the overall evaluation was made according to the following criteria.
○: 1.5 points or more and 2 points or less ×: Less than 1.5 points

2. Evaluation of fineness of foam texture In the evaluation of the above foaming, the fineness of the texture of the foam formed was evaluated simultaneously with the evaluation of the speed of foaming.
The evaluation is as follows. In the same manner as in the above test, the following score was given based on the fineness of the foam texture of the skin cleaning composition of Comparative Example 1 (conventional product).
2 points: Fine texture of bubbles.
1 point: The fineness of the foam does not change.
0 point: The texture of the foam is rough.

The average score of 10 professional panelists was obtained and comprehensively evaluated according to the following criteria.
○: 1.5 points or more and 2 points or less ×: Less than 1.5 points

3. Evaluation of amount of foam Similarly, the amount of foam formed was evaluated simultaneously with the evaluation of the speed of foaming by 10 expert panelists.
Evaluation was based on the amount of foam of the powdery skin cleaning composition of Comparative Example 1, and the following scores were assigned.
2 points: The amount of bubbles is large.
1 point: The amount of foam does not change.
0 point: The amount of foam is small.

The average score of 10 professional panelists was obtained and comprehensively evaluated according to the following criteria.
○: 1.5 points or more and 2 points or less ×: Less than 1.5 points

4). Evaluation results Table 1 below shows the overall evaluation results for each item.

  N- (palm fatty acid / palm fatty acid / sunflower fatty acid) The powdery skin cleansing compositions of Examples 1-4 in which lauramidopropylamine oxide was blended with sodium acylglutamate were all compared to the composition of Comparative Example 1. Obviously, the foaming was fast, the fineness of the foam texture and the amount of foam were excellent. The powdery skin cleansing compositions of Examples 1 to 4 are thought to exhibit performance suitable for face washing because foaming is fast and a large amount of foam is generated. Moreover, the texture of the foam formed was fine, elastic and excellent in the feeling on the skin.

The powdery skin cleansing composition of Comparative Example 2 containing lauriminopropylamine oxide instead of amphoteric surfactant, 2Na lauriminoacetic acid, was faster in foaming and foam texture than Examples 1-4. Was inferior in detail. In addition, the elasticity of the foam was low, and the feeling on the skin was poor.
In place of lauramidopropylamine oxide, the powdery skin cleansing composition of Comparative Example 3 containing lauramine oxide, which is a similar semipolar surfactant, is faster in foaming than Examples 1-4. It was inferior in the amount of foam. Since the comparative example 3 is inferior in foaming speed compared with Examples 1-4, it is thought that the quantity of the foam formed as a result decreased. Moreover, since there was little quantity of foam, the tactile feeling with respect to the skin at the time of use was inferior.

The powdery skin cleansing composition of Comparative Example 4 containing cocamidopropyl betaine, which is an amphoteric surfactant instead of lauramidopropylamine oxide, is highly deliquescent immediately after production, and therefore cannot maintain its powder state and cannot be solidified. As a result, the test method could not be evaluated.
N- (palm fatty acid / palm fatty acid / sunflower fatty acid) The powdery skin cleansing composition of Comparative Example 5 in which all of sodium acylglutamate was substituted with fatty acid amide alkyldimethylamine oxide was excellent in foaming speed. The fineness of the texture and the amount of foam were inferior.
In order to obtain the most preferable powdery skin cleansing composition from the evaluation tests of the speed of foaming, the quality of foam (fineness), and the amount of foam using the above Examples and Comparative Examples, acyl glutamate and fatty acid It has been found necessary to formulate a combination of amidoalkyldimethylamine oxide. Moreover, all the compositions of Examples 1 to 4 were able to be quickly foamed, and no splint remained.

<Surface tension reduction confirmation test using N-acyl glutamate and fatty acid amidoalkyldimethylamine oxide>
In order to confirm the effect on the surface tension by the combination of N-acyl glutamate and fatty acid amide alkyl dimethylamine oxide blended in the composition of the present invention, the following test was conducted.

1. Test method Using N- (palm fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate sodium as N-acyl glutamate and lauramide propylamine oxide as fatty acid amide alkyl dimethylamine oxide, an aqueous solution using these two components was prepared. . In order to make the content of the surfactant in the aqueous solution constant, 1% aqueous solutions of N- (palm fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate sodium and lauramidopropylamine oxide were prepared, respectively. Mix in a ratio of 8: 2, 6: 4, 5: 5, 4: 6, 2: 8.0: 10, and dilute this mixture with distilled water to a concentration of 0.01% by mass. Then, the surface tension of the aqueous solution was measured. The surface tension was measured by the Wilhelmy method (vertical plate method) using an automatic surface tension meter DY-300 (Kyowa Interface Science Co., Ltd.).

2. Results The measurement results of the surface tension are shown in FIG.
As shown in FIG. 1, when N- (coconut fatty acid / palm fatty acid / sunflower fatty acid) sodium acylglutamate as N-acylglutamate having a surfactant activity and lauramidopropylamine oxide as fatty acid amide alkyldimethylamine oxide are combined, N- (palm fatty acid / palm fatty acid / sunflower fatty acid) It was found that the surface tension of the aqueous solution was significantly reduced as compared with the case where sodium acylglutamate or lauramidopropylamine oxide alone was dissolved in water. By using N-acylglutamate and fatty acid amidoalkyldimethylamine oxide in combination, it is considered that the surface tension of the solution is lowered, that is, the surface free energy at the gas-liquid interface is lowered, so that bubbles are more efficiently generated.

Below, the prescription example of the face-washing cosmetics which has the structure of this invention is shown.

Formulation Example 1 Face Wash Powder
Ingredient Amount (% by mass)
Sodium N-lauroyl glutamate 20
Lauramidopropylamine oxide 20
Poly gamma sodium glutamate 0.02
L-serine 0.02
Mannitol 30
Glucose 10
Branched glucan with cyclic structure 3
Polydextrose 3
Talc residue

Formulation Example 2 Face Washing Powder Ingredients Amount (% by mass)
N-coconut oil fatty acid sodium acyl glutamate 30
Cocamidopropylamine oxide 10
Sodium N-lauroyl aspartate 10
Poly gamma sodium glutamate 4
L-serine 4
Mannitol 20
Glucose 10
Branched glucan with cyclic structure 1
Polydextrose 1
Talc residue

Formulation Example 3 Face Wash Powder Ingredients Amount (% by mass)
Sodium N-lauroyl glutamate 10
Potassium N-myristoyl glutamate 18
Lauramidopropylamine oxide 10
Potassium myristate 2
Sodium polyγ-glutamate 0.3
L-serine 0.3
Coconut oil fatty acid ethyl ester sodium sulfonate 10
Mannitol 10
Maltitol 10
O- [2-hydroxy-3- (trimethylammonio) propyl] chloride
Dextran 0.1
Agar powder 2
Dextrin powder 2
Hydroxypropyl starch phosphate 5
Talc residue

Claims (4)

  A powdery or granular skin cleansing composition comprising N-acyl glutamate and a fatty acid amidoalkyldimethylamine oxide.   The composition for skin cleansing according to claim 1, wherein N-acyl glutamate and fatty acid amidoalkyldimethylamine oxide are blended in a mass ratio of 100: 1 to 1: 1.   The skin cleansing composition according to claim 1 or 2, wherein the fatty acid amidoalkyldimethylamine oxide is lauramidopropylamine oxide. A method for producing a powdery or granular skin cleansing composition, which comprises blending a freeze-dried powder of lauramidopropylamine oxide and N-acylglutamate .

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