WO2020259934A1

WO2020259934A1 - Cleansing product with high viscosity

Info

Publication number: WO2020259934A1
Application number: PCT/EP2020/064354
Authority: WO
Inventors: Philipp Rübenhaus; Michael WÖHRMANN
Original assignee: Beiersdorf Ag
Priority date: 2019-06-24
Filing date: 2020-05-25
Publication date: 2020-12-30
Also published as: DE102019209058A1

Abstract

A cosmetic, highly-viscous cleansing product, containing an amino acid surfactant and an unbranched fatty alcohol that can be prepared in a crucible.

Description

High consistency cleaning product

The present invention describes a cleaning preparation which has such a high consistency that the preparation is suitable for removal from a crucible. Furthermore, the preparation is mild, so that the preparation is preferably intended for facial cleansing.

Cleansing products are designed to cleanse the skin and hair. After the cleaning process, the user ideally has a feeling of cleanliness, freshness and well-being. Man has always had the need to purify, i.e. Removing dirt from the skin or hair. The aim of the cleaning process is to remove dirt from the surface of the skin. The dirt film consists of solid or liquid components that have reached the skin from the outside. The film of dirt also includes excess skin lipids and dead body cells. With the help of surface-active ingredients in the cleaning compositions, the components of the

Dirt films in the wash liquor and are removed from the skin by the rinsing process. In addition to removing the film of dirt, however, surface lipids of the skin, for example barrier lipids, can also be dissolved to a limited extent by the surface-active substances in the cleaning preparations and removed during the rinsing process. The loss of skin lipids can lead to symptoms of dehydration and skin irritation. If products are intended for facial cleansing, this is all the more true since the facial skin is a sensitive skin and this is especially true of the eye area.

Various concepts are known for reducing the irritative effects of certain surfactants in cleaning preparations. One possibility is to choose particularly mild surfactants. Another possibility is the use of moisturizing ingredients in cleaning preparations. The absence of anionic soap-based surfactants also helps to reduce the irritation potential of cleaning preparations.

Over time, the cleaning processes have changed, as have the products that are used for cleaning. Nowadays, special cleaning products are often used ver such. B. for the body, for the hair, for the face, for the feet and others. The respective cleaning products are offered in different versions. Despite this multitude of different product forms, consumer surveys repeatedly express the desire for new, innovative product forms.

There was therefore a need to provide a cleansing preparation that is so mild that it can be used in the facial area and, on the other hand, to choose a product form for this cleansing preparation that is not customary.

A concept was developed to offer cleaning preparations in one pan. Usually cleaning preparations are offered in dispensers or tubes, but also in cans, then in the present case in aerosol form. In order to enable it to be removed from a dispenser or a tube, the preparation must have a certain flowability. This means that the viscosity must not be too high to allow easy removal from the tube / dispenser.

Different requirements apply to removal from a crucible. The preparation must be pasty for this. This property is usually determined using a consistency specification. It was therefore a matter of finding means that bring about the pasty properties of the cleaning preparation without adversely affecting the other properties, cleaning performance and mildness.

The StdT contains documents that include reveal various components that can have an impact on the consistency of a preparation.

EP 2682161 A2 describes that there are pH-sensitive amino acid surfactants which have a maximum viscosity in a certain pH range. Sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium cocoyl glutamate and sodium cocoylalanate are mentioned as pH-sensitive amino acid surfactants.

EP 2320862 A1 (WO 2011/025898 A1) discloses preparations for cleaning hair which contain amino acid surfactants with a certain structure, glyceryl ethers with a certain structure and fatty alcohols. These components are intended to help ensure that the foam develops quickly and has sufficient stability and creaminess.

In the document EP 3068368 A2 (WO 2015/071298 A2) cleaning preparations are described which can form a lamellar structure. These preparations are said to be good foam and also be stable in storage. These preparations contain an anionic surfactant of the glycinate type.

In none of these documents is a pasty preparation explicitly disclosed and there is also no disclosure of how a pasty preparation can be produced in a suitable manner.

Surprisingly, a pasty preparation could be obtained by

at least one amino acid surfactant, in particular an acylglycic acid and / or a physiologically acceptable salt thereof, in an amount of 2 to 20% by weight, based on the total weight of the preparation,

at least one thickener, in particular an acrylate-based thickener tel in an amount of 0.1 to 5.0 wt .-%, based on the total weight of the preparation and

at least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0 wt .-%, based on the total weight of the preparation in the preparation and

the pH of the preparation being between 4.0 and 9.0 and

wherein in the preparation the weight ratio of the at least one amino acid to the at least one fatty alcohol is 15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1.

The preparation is a cosmetic preparation and is intended for cleaning the skin, in particular facial skin. For this purpose, it is advantageous if the preparation is applied to the skin and, after a short exposure time (5 seconds to 5 minutes), is removed, preferably rinsed off with water.

The preparation is an aqueous preparation; It is advantageous if the preparation contains 50 to 80% by weight, in particular 60 to 70% by weight, of water. The preparation according to the invention contains at least one amino acid surfactant, which can be described with the following formula:

where Ri is a saturated or unsaturated, branched or unbranched alkyl radical,

R is a hydrogen atom or a methyl group,

R is a hydrogen atom, COO M ⁺ , CH COO M ⁺ or COOH,

n is a number between 0 and 2,

X is COO and

M is independently a hydrogen atom [H ⁺ ], Na ⁺ or K ⁺ .

It is preferred if the at least one amino acid surfactant is an acyl glycinate, more preferably a sodium cocoyl glycinate. Sodium cocoyl glycinate can be obtained, for example, from Clariant under the trade name Hostapon SG.

The at least one amino acid surfactant is contained in the preparation according to the invention in an amount of 2 to 20% by weight, preferably 3 to 15% by weight, more preferably 4 to 10% by weight, based on the total weight of the preparation.

The preparation according to the invention contains at least one thickener. Thickeners can also be called "hydrocolloids", a more precise description is the term "hydrophilic colloid". Hydrocolloids are macromolecules that have a largely linear shape and have intermolecular interaction forces that enable secondary and main valence bonds between the individual molecules and thus the formation of a network-like structure. Some of them are water-soluble natural or synthetic polymers that form gels or viscous solutions in aqueous systems. They increase the viscosity of the water by either binding water molecules (hydration) or by absorbing and enveloping the water in their interwoven macromolecules, while at the same time restricting the mobility of the water. Such soluble polymers represent a large group of chemically very different natural and synthetic polymers, the common feature of which is their solubility or swellability in water or aqueous media. A prerequisite for this is that these polymers have a sufficient number of hydrophilic ones for their solubility or swellability in water Own groups and are not overly networked. The hydrophilic groups can be non-ionic, anionic or cationic in nature.

The group of cosmetically and dermatologically relevant hydrocolloids can be divided into:

organic, natural compounds such as agar-agar, carrageenan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour, carob tree gum, starch, dextrins, gelatine, casein,

organic, modified natural substances, such as B. carboxymethyl cellulose and other cellulose ethers, hydroxyethyl and -propyl cellulose and the like,

organic, fully synthetic compounds, such as. B. polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, polyamides, inorganic compounds, such as. B. polysilicic acids, clay minerals such as montmorillonites, zeolites, silicas.

Hydrocolloids preferred according to the invention are organic, fully synthetic compounds, in particular polyacrylic and / or polymethacrylic compounds.

Polyacrylates can be homopolymers of acrylic acid, which are then referred to as carbomers. An advantageous carbomer can be obtained from Lubrizol Advanced Materials under the trade name Carbopol 980, for example.

Polyacrylates or polymethacrylates can also be copolymers which, in addition to acrylic acid and / or methacrylic acid, have been synthesized from other monomers. It is advantageous according to the invention if the further monomers are alkyl acrylates and / or alkyl methacrylates, particularly advantageous with alkyl radicals having 10 to 30 carbon atoms (C10-C30). Such a polymer is, for example, an Acrylates / C10-C30 Alkylcryate Crosspolymer (INCI name), which is available from Lubrizol Advanced Materials under the trade name Carbopol ETD 2020.

In the preparation according to the invention, the at least one thickener is present in an amount of 0.1 to 5.0% by weight, preferably 0.5 to 2.5% by weight, particularly preferably 0.5 to 1.5% by weight %, based on the total weight of the preparation.

The preparation according to the invention contains at least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0% by weight, preferably 0.5 to 2.0% by weight, based on the Total weight of the preparation. The fatty alcohols according to the invention can be described by the following formula:

R ₄ - OH

Where R _{4 is} an unbranched, saturated alkyl radical with 12 to 20 carbon atoms. It is preferred if the alkyl radical has 14 to 18 carbon atoms. It is particularly preferred if cetyl alcohol is contained. It is further particularly preferred if the fatty alcohol is only in the form of cetyl alcohol and no other fatty alcohols are contained.

The pH of the preparation according to the invention is between 4.0 and 9.0, preferably between 4.5 and 6.5. The pH value can be adjusted and kept stable with the agents customary in the technical field of cosmetics. According to the invention, however, it is preferred if a base is added first; it is particularly preferred if the base is added in two successive steps. It is preferred according to the invention if the base is an inorganic compound, particularly preferably sodium hydroxide and / or potassium hydroxide, more particularly preferably sodium hydroxide.

After adding the base, the pH value can be lowered again with an acid. It is preferred according to the invention if the acid is an organic acid, in particular citric acid is given.

It is advantageous if further surfactants are contained in the preparation according to the invention. These further surfactants can be selected from the group of anionic surfactants and / or the photeric surfactants, with the proviso that the at least one amino acid surfactant is not included in the group of further anionic surfactants.

Suitable further anionic surfactants can be selected from:

Carboxylic acids and derivatives such as

• Carboxylic acids and their salts, for example capric acid, lauric acid / salt, aluminum stearate, magnesium alkoxide and zinc undecylenate, stearic acid / salt, palmitic acid / salt, myristic acid / salt,

• Ester carboxylic acids, for example calcium stearoyl lactylate, laureth-6 citrate and sodium PEG-4 lauramide carboxylate,

• Ether carboxylic acids, for example sodium laureth-13-carboxylate and sodium PEG-6-cocamide carboxylate, Phosphoric acid esters and salts, such as DEA-Oleth-10-Phosphate and Dilaureth-Phosphate,

Sulfonic acids and salts such as

• acyl isethionates, e.g. Sodium / ammonium cocoyl isethionate, sodium lauryl methyl isethionate,

• alkylarylsulfonates,

• alkyl sulfonates, for example sodium coconut monoglyceride sulfate, sodium C12-14 olefin sulfonate, sodium lauryl sulfoacetate and magnesium PEG-3 cocamide sulfate,

• Sulfosuccinates, for example dioctyl sodium sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, disodium undecylenamido-MEA sulfosuccinate and PEG-5 lauryl citrate sulfosuccinate.

such as

Sulfuric acid ester, such as

• Alkyl ether sulfate with different degrees of ethoxylation and mixtures thereof, for example sodium, ammonium, magnesium, Ml PA, TIPA-Laureth-X-sulfate, sodium myreth-X-sulfate and sodium C12-13-pareth-X-sulfate , with X = 1-5 ethoxy groups.

• Alkyl sulfates, for example sodium, ammonium and TEA lauryl sulfate, sodium ammonium and TEA coconut sulfate.

According to the invention, it is further advantageous to select the further surfactants from the group of alkyl ether sulfates; it is particularly further advantageous to select lauryl ether sulfate.

According to the invention, it is particularly advantageous if the preparation according to the invention does not contain any soap-based surfactants. Soaps include the water-soluble sodium or potassium salts of saturated and unsaturated higher fatty acids were understood.

Suitable amphoteric surfactants can be selected from:

Acyl / dialkylethylenediamine, for example sodium acylamphoacetate, disodium acylamphodipropionate, disodium alkylamphodiacetate, disodium cocoamphodiacetate, disodium cocoamphomonoacetate, sodium acylamphohydroxypropylsulfonate, disodium acylamphodampiacetate and sodium,

N-alkylamino acids, for example aminopropylalkylglutamide, alkylaminopropionic acid, sodium alkylimidodipropionate and lauroamphocarboxyglycinate.

Alkyl betaines, for example coco betaine, Alkylamidopropyl betaine, for example cocoamidopropyl betaine,

Sultaines, for example lauryl hydroxy sultaine.

According to the invention, it is further advantageous to select the further surfactants from the group of the alkyl betaines; it is particularly further advantageous to select cocobetaines.

If further surfactants are contained in the preparation according to the invention, these are present with a total content of 2 to 11% by weight, preferably 2 to 8% by weight, based on the total weight of the preparation. It is advantageous if the other anionic surfactants with a content of 2 to 5 wt .-%, based on the total weight of the preparation and / or the amphoteric surfactants with a content of 2 to 6 wt .-%, based on the total weight of the preparation. The content of the at least one amino acid surfactant is not included in the total content of the further surfactants.

The preparation according to the invention can advantageously contain at least one preservative. Preservatives are those preserving substances that are approved for use in cosmetic products for Europe in accordance with the Cosmetics Regulation for Germany and Regulation (EC) No. 1223/2009 on cosmetic products.

The at least one preservative can advantageously be selected from the group phenoxyethanol, methyl paraben, ethyl paraben, benzoic acid and / or a physiological salt thereof, in particular sodium benzoate, sorbic acid and / or a physiological salt thereof, in particular sodium sorbate and / or salicylic acid and / or a physiological salt thereof, especially sodium salicylate.

If the preparation according to the invention contains preservatives, they are present with a total content of 1.0 to 4.0% by weight, preferably 1.5 to 2.0% by weight, based on the total weight of the preparation.

It is also advantageous according to the invention if one or more humectants are additionally incorporated into the preparation according to the invention. Humectants can, for example, give the skin moisture and / or help prevent moisture loss in the skin. The humectants are hygroscopic substances that can bind water. This water-binding capacity is based on hydrophilic groups such as hydroxyl groups, but also amine groups and carboxyl groups. Humectants are for example Glycerine, butylene glycol, propylene glycol, Biosaccaride Gum-1, ethylhexyloxyglycerine, pyrrolidonecarboxylic acid, urea, sorbitol, xylitol, aloe vera gel and others. According to the invention, the use of propylene glycol and / or glycerol is preferred.

If the preparation according to the invention also contains one or more humectants, the humectant (s) has a total content of 0.01 to 30% by weight, preferably 5 to 20% by weight, based on the total weight of the preparation tung, before.

In order to color the preparations according to the invention, at least one dye and / or color pigment can also be included. The dyes and pigments can be selected from the corresponding positive list of the Cosmetics Ordinance or the EC list of cosmetic colorants. In most cases, they are identical to the food coloring agents. Suitable color pigments are, for example, titanium dioxide, mica, iron oxides (e.g. Fe ₂ 0 ₃ , Fe ₃ 0 ₄ , FeO (OH)) and / or tin oxide. Suitable dyes are, for example, carmine, Prussian blue, chrome oxide green, ultramarine blue and / or manganese violet. It is advantageous to choose the dyes and / or color pigments from the Rowe Color Index, 3rd edition, Society of Dyers and Colourists, Bradford, England, 1971.

It is particularly advantageous to select the at least one dye from water-soluble or polar dyes:

Furthermore, it is particularly advantageous to select titanium dioxide (CI 77891) as a color pigment.

If the preparation according to the invention contains dyes and / or colored pigments, the total content of the at least one dye and / or the at least one colored pigment is in the range from 0.01 to 0.3% by weight, preferably from 0.05 to 0 To choose 2 wt .-%, based on the total weight of the preparation.

The preparation according to the invention can contain cosmetic auxiliaries such as are customarily used in such preparations, eg. B. preservatives, complexing agents, bactericides, perfumes, substances to increase foaming, fillers that improve the feel of the skin, fats, oils, waxes or other common ingredients of a cosmetic or dermatological formulation such as alcohols, foam stabilizers, electrolytes, organic solvents or silicone derivatives .

The preparation according to the invention can be produced by any method customary in the cosmetic industry and suitable for this form of preparation. However, it is advantageous if the preparation is made in the following way:

Place water in a suitable vessel, add the thickener (s) while stirring with a dissolver stirrer *, stir until the thickener (s) has swelled; Warming in a water bath with stirring to about 60 to 80 ° C, adding the fatty alcohol (polymer phase);

Adding the heated surfactant to the polymer phase (batch) at about 60 ° C; optionally, if several surfactants are included, adding the at least one amphoteric surfactant, then adding the at least one amino acid surfactant and adding the at least one further anionic surfactant;

Stir the batch for about 15 minutes in a water bath at 60 ° C; Remove from the water bath and cool to about 40 ° C while stirring; During cooling, addition, optionally addition of one or more dyes and / or perfume; Adjusting the pH with a base and / or an organic acid rule (batch II);

Filling the still warm batch (batch II) into suitable vessels, in particular crucibles, complete cooling in the appropriate vessel.

It is particularly advantageous if the preparation according to the invention is produced in the following way:

Place water in a suitable vessel, add the thickener (s) while stirring with a dissolver stirrer *, stir until the thickener (s) has swelled; Warming in a water bath with stirring to about 60 to 80 ° C, adding the fatty alcohol, (polymer phase).

Adding the heated surfactant to the polymer phase (batch) at about 60 ° C; If the preparation contains further surfactants, it is advantageous to add the amphoteric surfactant (for example coco-betaine) first, then the at least one amino acid surfactant (for example sodium cocoyl glycinate) and then the other anionic surfactant (for example sodium lauryl ether sulfate) admit;

Stir the batch for about 15 minutes in a water bath at 60 ° C; Remove from the water bath and cool to 40 ° C with stirring;

During cooling, adding, if desired, one or more dyes and the perfume; Adjustment of the pH with an organic acid (for example citric acid) in two steps, whereby first half of the acid is added, after 1 to 2 minutes the second half of the acid is then added (batch II).

Filling the still warm batch (batch II) into suitable vessels (especially crucibles), complete cooling in a suitable vessel.

* The dissolver stirrer can be, for example, a dissolver stirrer from IKA. The stirrer should have a speed of 50 to 2000 rpm, advantageously a stirrer should be selected for the manufacture of the pasty preparation according to the invention, which can move the stirrer at 400 to 1200 rpm.

In order to demonstrate the effect that both amino acid surfactants and fatty alcohol are important in order to achieve a pasty consistency, the following preparations were made and examined with regard to pH and consistency.

* Acrylates / C10-C30 Alkyl Acrylate Crosspolymer

** Cetyl Alcohol

The investigations show two things. On the one hand, amino acid surfactants, using the example of sodium cocoyl glycinate, have a thickening effect that is so pronounced that pasty preparations can be obtained. Furthermore, the results for amphoteric surfactants, using the example of coco-betaine and other anionic surfactants, in particular alkyl ether sulfates, using the example of sodium lauryl ether sulfate, show that these surfactants have no thickening effect. A further study was even carried out for sodium laureth sulfate, in which the pH value was gradually raised to 5.1; none of these preparations showed a thickening effect.

In addition, a combination of at least one amino acid surfactant (based on the example of sodium cocoyl glycinate) and at least one fatty alcohol (based on the example of cetyl alcohol) leads to a further thickening of the preparation, which can be read from even higher consistency values. It was also analyzed whether and what effect the amount of amino acid surfactant (e.g. sodium cocoyl glycinate) or fatty alcohol (e.g. cetyl alcohol) has on the consistency.

In a first experiment, the amount of fatty alcohol was varied and the amounts of all other components kept constant; the amount of water was varied to make up the example formulations to 100%. The preparations were examined for pH and consistency.

* Sodium Cocoylg ycinate

_** Acrylates / C10-C30 Alkyl Acrylate Crosspolymer

_** Cetyl Alcohol.

In a second experiment, the amount of amino acid surfactant was varied and the amounts of all other components kept constant; the amount of water was varied to make up the example formulations to 100%. The preparations were examined for pH and consistency.

* Sodium Cocoylg ycinate

_** Acrylates / C10-C30 Alkyl Acrylate Crosspolymer

_** Cetyl Alcohol.

The two studies show that both the amount of amino acid surfactant, using the example of sodium cocoyl glycinate, and also the amount of fatty alcohol have an effect in terms of show the thickening. The combination of amino acid surfactant (s) and fatty alcohol (s), both in a certain ratio, leads to such a thickening that pasty preparations can be obtained.

From these experiments it can be seen that a weight ratio of amino acid to fatty alcohol of 12: 1 to 3: 1, advantageously from 10: 1 to 5: 1, leads to satisfactory, namely sufficiently pasty, preparations.

In a further experiment it could be shown that there is an optimum consistency in relation to the amount of amino acid surfactant, namely with an amount of amino acid surfactants (using the example of sodium cocoyl glycinate) of about 5% by weight.

* Sodium Cocoylg ycinate

Acrylates / C10-C30 Alkyl Acrylate Crosspolymer

Cetyl alcohol.

These investigations show that with the combination of amino acid surfactant and fatty alcohol according to the invention such a thickening can be achieved, so that the preparation according to the invention can be made available in pasty form.

In the case of pasty preparations, it is advantageous to determine the consistency instead of the viscosity. The consistency measurements were carried out with a KO-82 consistometer. The consistency measurement device is a conventional spring balance dynamometer that has been optimized so that cosmetic samples can be measured. The dynamometer is a Kontaktor brand dynamometer.

The sample to be measured is filled into a 75 ml aluminum crucible and stored. The measurements are carried out at fixed intervals during storage. The sample to be measured in the aluminum crucible is placed in the holder.

The dynamometer is attached to the machine using the bracket provided. The indicator for determining the maximum consistency, a red pointer, is set to zero. The sensor initially points upwards.

The machine is started with the green button. The holder with the sample is now fixed accordingly. The measurement begins when the start button (white) is pressed. The dynamometer with the probe, which is immersed in the sample, rotates through 360 ° at a defined speed of 10 rpm. The force is now measured that is necessary for the probe to move once through the sample. The black pointer of the dynamometer shows the measured force in real time and the red pointer shows the maximum force applied during the measurement process.

Depending on the properties of the sample, different dynamometers with different scales are available.

The measured value on the scale corresponds to 1g / cN per unit.

As long as there are no disruptive factors such as air bubbles or strong instabilities, the accuracy of the measuring device is given with a measured value of ± 1 per scale unit. In the case of a dynamometer with a scale from 25 to 250, the scale being displayed in steps of 5, the result is thus given with a reproducibility of ± 5g / cN. Measurements are taken at a temperature of 25 ° C. The sample is stored in the same room, but at least in a room of the same temperature.

The pH was measured by means of a commercially available pH meter (for example the laboratory pH meter 766, Knick brand).

In order to be able to make a statement about the mildness of the preparation according to the invention, an example recipe was produced and distributed to 35 users who describe their skin as sensitive. The users used the named product once a day for 14 days. After this test period, a questionnaire had to be filled out. The users confirmed that the product according to the example formulation was very well tolerated; there was no reddening of the skin during the test period or thereafter, and no skin irritation was observed either. The present invention also relates to the use of a combination of at least one amino acid surfactant and at least one fatty alcohol for thickening a cosmetic cleaning preparation to a pasty consistency. Particularly advantageous is the use of a combination of at least one amino acid surfactant and at least one fatty alcohol for thickening a cosmetic cleaning preparation to a pasty consistency, the at least one amino acid surfactant being an acylglycic acid and / or a physiologically compatible salt thereof and in an amount of 2 to 20 wt .-%, based on the total weight of the preparation, is present, the least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms in an amount of 0.5 to 5.0 wt .-%, based on the Total weight of the preparation is present and that the weight ratio of amino acid surfactant to fatty alcohol is 15: 1 to 2: 1, preferably 12: 1 to 5: 1.

Examples:

The following examples are intended to illustrate the present invention without restricting it. The numerical values in the examples mean percentages by weight, based on the total weight of the respective preparations. The information relates to the respective active content.

Claims

1) Preserving cosmetic paste-like cleaning preparation

at least one thickener, in particular an acrylate-based thickener in an amount of 0.1 to 5.0% by weight, based on the total weight of the preparation and

at least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0% by weight, based on the total weight of the preparation

the pH of the preparation being between 4.0 and 9.0 and

where in the preparation the weight ratio of amino acid surfactant to fatty alcohol

15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1.

2) Preparation according to claim 1, characterized in that the preparation contains water, preferably with a content of 50 to 80 wt .-%, particularly preferably 60 to 70 wt .-%, based on the total weight of the preparation.

3) Preparation according to claim 1 and / or 2, characterized in that the amino acid surfactant is contained in an amount of 3 to 15 wt .-%, preferably 4 to 10 wt .-%, based on the total weight of the preparation and based on active salary.

4) Preparation according to at least one of the preceding claims, characterized in that the at least one acrylate-based thickener is a carbomer and / or an acrylates / C10-C30 alkyl acrylate cross-polymer.

5) Preparation according to at least one of the preceding claims, characterized in that at least one thickener with a content of 0.5 to

2.5% by weight, preferably 0.5 to 1.5% by weight, based on the total weight of the preparation. 6) Preparation according to at least one of the preceding claims, characterized in that the at least one fatty alcohol has a chain length of 14 to 18 carbon atoms, in particular that it contains cetyl alcohol and in particular that only cetyl alcohol is included.

7) Preparation according to at least one of the preceding claims, characterized in that the at least one fatty alcohol with a content of 1, 0 to

4.0% by weight, based on the total weight of the preparation, is present.

8) Preparation according to at least one of the preceding claims, characterized in that the pH is between 4.5 and 6.5.

9) Preparation according to at least one of the preceding claims, characterized in that the preparation contains one or more other (s) surfactant (s) selected from the group of anionic surfactants and / or amphoteric surfactants, with the proviso that the anionic surfactants are not amino acid surfactants.

10) Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant is an anionic surfactant, before given to an alkyl ether sulfate, particularly preferably sodium lauryl ether sulfate.

11) Preparation according to at least one of the preceding claims, characterized in that the preparation is soap-free.

12) Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant is an amphoteric surfactant, before given to an alkyl betaine, particularly preferably coco-betaine.

13) Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant with a total content of 2.0 to 11.0 wt .-%, based on the total weight of the preparation and the active content before.

14) Preparation according to at least one of the preceding claims, characterized in that it also contains at least one preservative, preferably selected from the group consisting of phenoxyethanol, methyl paraben, ethyl paraben and / or benzyl alcohol. 15) preparation according to at least one of the preceding claims, characterized in that the at least one preservative with a content of 1, 0 to 4.0 wt .-%, preferably 1, 5 to 2.0 wt .-%, based on the total weight of the preparation is available.

16) Process for the production of a pasty cleaning preparation, characterized by the following process steps:

Put water in a suitable vessel, add the thickener (s) while stirring with a dissolver stirrer, stir until the thickener (s) has swollen;

Warming in a water bath with stirring to about 60 to 80 ° C, adding the fatty alcohol (polymer phase);

Adding the heated surfactant (approx. 60 ° C.) to the polymer phase (batch); optionally, if several surfactants are included, adding the at least one more photonic surfactant, then adding the at least one amino acid surfactant and adding the at least one further anionic surfactant;

During cooling, adding, optionally adding one or more colorants and / or perfume; Adjusting the pH with a base and / or an organic acid (batch II);

Filling of the still warm batch (batch II) into suitable vessels, in particular crucibles, complete cooling in the suitable vessel.

17) Use of a combination of at least one amino acid surfactant and at least one fatty alcohol to thicken a cosmetic cleaning preparation to a pasty consistency.

18) Use according to claim 17, characterized in that

the at least one amino acid surfactant is an acylglycic acid and / or a physiologically compatible salt thereof and is present in an amount of 2 to 20% by weight, based on the total weight of the preparation,

the at least one unbranched fatty alcohol with a chain length of 12 to 20 carbon atoms is present in an amount of 0.5 to 5.0% by weight, based on the total weight of the preparation, and that The weight ratio of amino acid surfactant to fatty alcohol is 15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1.