WO2020078659A1

WO2020078659A1 - Cosmetic foam which is suitable for jar products and production of such cosmetic foam

Info

Publication number: WO2020078659A1
Application number: PCT/EP2019/075312
Authority: WO
Inventors: Kerstin Skubsch; Inken Neckermann; Christiane Meyer; Dominik Göddertz; Sven Madaus; Michele Pierre Rathsack; Svenja Lügger; Jens Donath
Original assignee: Beiersdorf Ag
Priority date: 2018-10-16
Filing date: 2019-09-20
Publication date: 2020-04-23
Also published as: EP3866749A1; DE102018217678A1

Abstract

The invention relates to a cosmetic foam containing a) an oil-in-water emulsion (O/W emulsion) containing aa) a wax combination of at least two waxes, the first wax having a melting point of 40-50 °C at 1.013 bar and the second wax having a melting point of over 50 °C at 1.013 bar, the wax having a melting point of 40-50 °C in a concentration of 4 to 10 wt% and the wax having a melting point of over 50 °C in a concentration of 1-8 wt%, in each case based on the total weight of the O/W emulsion, ab) up to 10 wt%, based on the total weight of the O/W emulsion, of one or more oils which are liquid at 20 °C and 1.013 bar, ac) 0.1 to 0.4 wt%, based on the total weight of the O/W emulsion on one or more emulsifiers, the O/W emulsion being free from polyethylene glycol and the ethers or esters thereof, polypropylene glycols and the ethers and esters thereof, surfactants, proteins, mineral oils and mineral waxes, silicone oils and silicone waxes, parabens, isothiazolinones and 3-iodopropargyl-N-butylcarbamate (IPBC), and b) 20-50 wt% of one or more propellant gases, and the production and filling process thereof.

Description

description

Cosmetic foam suitable for Tieqel products and their manufacture

The present invention relates to a cosmetic foam containing

a) containing an oil-in-water emulsion (O / W emulsion)

aa) a wax combination of at least two waxes, the first wax having a melting point of 40-50 ° C at 1,013 bar and the second wax having a melting point of over 50 ° C at 1,013 bar, the wax having a Melting point of 40-50 ° C in a concentration of 4 to 10 wt.% And the wax with a melting point of over 50 ° C in a concentration of 1-8 wt.% Each based on the total weight of the O / W emulsion is

ab) up to 10% by weight, based on the total weight of the O / W emulsion on one or more oils which are liquid at 20 ° C. and 1,013 bar,

ac) 0.1 to 0.4% by weight, based on the total weight of the O / W emulsion on one or more emulsifiers,

the O / W emulsion being free from polyethylene glycols and their ethers or esters, polypropylene glycols and their ethers and esters, surfactants, proteins, mineral oils and waxes, silicone oils and waxes, parabens, isothiazolinones and 3-iodopropargyl-A / butylcarbamate (IPBC),

such as

b) 20-50% by weight of one or more propellants

as well as its manufacturing and filling process.

The desire to look beautiful and attractive is inherently rooted in people. Even if the ideal of beauty has changed over time, the pursuit of a flawless appearance has always been the goal of people. The condition and appearance of the skin play an important part in creating a beautiful and attractive exterior.

In order for the skin to fully fulfill its biological functions, it needs regular cleaning and care. The cleaning of the skin serves to remove dirt, sweat and residues of dead skin particles, which form an ideal breeding ground for pathogens and parasites of all kinds. Skin care products mostly serve the

Moisturizing and regreasing the skin. Active ingredients are often added to them, which Regenerate skin and, for example, its premature aging (e.g. the emergence of

To prevent and reduce wrinkles).

Skin care products (like some skin cleansing products) usually consist of emulsions. Emulsions are generally understood to be heterogeneous systems which consist of two immiscible or only to a limited extent miscible liquids, which are usually referred to as phases and in which one of the two liquids is dispersed in the form of very fine droplets in the other liquid. When viewed externally and with the naked eye, emulsions appear homogeneous.

If the two liquids are water and oil and oil droplets are finely distributed in water, then it is an oil-in-water emulsion (O / W emulsion, e.g. milk). Of the

The basic character of an O / W emulsion is characterized by the water. A water-in-oil emulsion (W / O emulsion, e.g. butter) is the opposite principle, whereby the basic character is determined by the oil.

In addition to the "classic" application of applying emulsions to the skin directly from the storage container, there are also a smaller number of applications in which the emulsion is foamed for use on the skin. This is usually done when using a propellant. Foamed preparations are particularly popular with consumers due to their special sensory properties. These properties have long been known in the food sector (e.g. ice cream), where the incorporation of air or nitrogen creates particularly creamy, tender-melting sensory impressions.

In the cosmetics sector, foamed emulsions have a special feeling on the skin due to their foam consistency, which users perceive as being easier to distribute on the skin. It is a "lighter" and less sticky skin feeling.

Foamed cosmetic preparations are usually presented in the form of aerosol cans. Such products are relatively undemanding when compared to "permanent foams" because the foam only has to be stable for a relatively short time. However, they have the disadvantage that certain safety aspects must be taken into account during storage and manufacture, since they are a due to the excess pressure of the propellant gas

Represent a source of danger. In addition, in the case of overpressure systems, a relatively large amount of packaging waste arises after use and must then be disposed of. It was therefore the object of the present invention to develop a preparation which is already foamed in the packaging and which can be stored and presented in a crucible.

However, the large-scale production of preparations foamed in the crucible is anything but trivial, since the propellant gas must be incorporated into the recipe in a stable manner during the manufacturing process. As a rule, this requires the highest possible consistency so that the propellant gas does not escape again. On the other hand, the preparation must be so low-viscous that it is stirrable, flowable and fillable. The bottling is usually carried out in

industrial scale with the help of piston pumps. Due to their pressure fluctuations in the manufacturing process, a manufactured foam is quickly destroyed again.

Since foams are a multi-phase system, they need to be stabilized

surface-active substances. In order to produce well-foamed preparations with creamy sensors, polyethylene glycols,

Polypropylene glycols and derivatives (so-called PEG derivatives or PPG derivatives and / or surfactants (i.e. surface-active compounds with an HLB value greater than 10) are used.

Polyethylene glycols and polyethylene glycol derivatives (PEG derivatives) are compounds with an alcohol or acid function that are wholly or partially etherified or esterified with polyethylene glycols. The same applies to the polypropylene glycols. These PEG derivatives or PPG derivatives are increasingly undesirable for consumers, as they are used by some

Scientists are denied the harmlessness to health. Whether these concerns are scientifically justified can be left open in the context of the present invention. The fact is, however, that consumers are increasingly demanding cosmetics that are "PEG-free" or "PPG-free".

Consumers also have corresponding concerns about surfactants. The assignment to this connection class is made via the HLB value. From many

Compounds in this class of substances have a certain skin irritation potential. This is usually so large that surfactants are usually only used in so-called "rinse-off products" (e.g. shampoos, shower gels) that are rinsed off the skin shortly after use.

It was the object of the present invention to develop a sensorially attractive, long-term stable (ie also storage and transport lasting) cosmetic foam based on a foamed emulsion which is free of polyethylene glycols, Polypropylene glycols and their derivatives (PEG derivatives, PPG derivatives) and free of surfactants (whereby sodium cetearyl sulfate is by definition not counted among the surfactants).

Surfactants based on proteins represent an alternative to the glycol derivatives and surfactants known in the art for foam stabilization. Proteins, however, always carry the risk of causing allergic reactions in sensitive consumers. Since such risks should be avoided from the outset, only protein-free preparations were considered for the solution of the task.

In addition to the surface-active compounds, the composition of the oil phase of an emulsion also influences the stability of a cosmetic foam. According to the state of the art, the oil phase usually contains mineral oils (e.g. petroleum jelly, paraffin oils and waxes) and / or silicone oils to protect the foam from outgassing.

It is also disadvantageous in this case that consumers are increasingly rejecting the use of these substances for environmental and health reasons.

It was therefore the object of the present invention to develop a foam which is free from mineral oil products and silicone oils and waxes.

Due to the difficulties in the stable incorporation of propellant gases into the preparations for the formation of foams, products with low levels are almost exclusively on the market

Proportion of propellant gas (up to about 10% by volume), which are usually referred to as "mousse" or whipped cream. With such a low gas content, the foam bubbles are practically barely noticeable. In terms of their sensory properties, these products clearly lag behind foams with a higher gas content (greater than or equal to 20% by volume).

Last but not least, it is precisely with "permanent foam" products that it is necessary to safely preserve the preparation. Due to the large surface area of the foams, contamination by bacteria and fungi is a particular challenge. Parabens are usually used to preserve these products. However, this class of substances too (whether justified or not, can remain open within the scope of the present disclosure) has been discredited by the consumer.

It was therefore the object of the present invention to develop a cosmetic foam which is microbially stable without the use of parabens, isothiazolinones and 3-iodopropargyl / V-butyl carbamate (IPBC) (which have also come under scrutiny) for preservation. All in all, only a very limited number of raw materials that were unproblematic from the consumer's point of view were available to the specialist for the production of a stable, "crucible-compatible" cosmetic foam based on an emulsion, in order to quickly and sensibly distribute the skin in the skin to develop absorbent foam.

The objects are surprisingly achieved by a cosmetic foam containing a) an oil-in-water emulsion (O / W emulsion) containing aa) a wax combination of at least two waxes, the first wax having a melting point of 40-50 ° C. 1.013 bar and the second wax has a melting point of over 50 ° C. at 1.013 bar, the wax having a melting point of 40-50 ° C. in a concentration of 4 to 10% by weight and the wax having a Melting point of over 50 ° C is contained in a concentration of 1-8 wt.% Each based on the total weight of the O / W emulsion

such as

b) 20-50% by weight of one or more propellants.

Although the prior art knows EP1216682, EP1372577, DE 10058384, EP 104387, EP 1314416, WO 2006/103102, WO2015 / 097594, DE 10333710, EP1866362 and EP1337226, these documents could not point the way to the present invention.

It is advantageous according to the invention if the emulsion has a solid fat content at 40 ° C. of at least 40%, measured by means of DSC measurement.

It is preferred according to the invention if the emulsion has a solid fat content at 50 ° C. of at least 15%, measured by means of DSC measurement. It is also advantageous according to the invention if the density of the foam is 0.5 to 0.8 g / ml. This information refers to the condition at 20 ° C and 1,013 bar ambient pressure.

Advantageous embodiments of the present invention are also characterized in that the waxes with a melting point of over 50 ° C. at 1,013 bar are selected from the group of the compounds candellila wax, carnauba wax, cetearyl behenate,

Cetearyl alcohol, behenyl alcohol, stearyl alcohol, C18-38 alkyl hydroxystearoyl stearate, beeswax, lanolin alcohol, C18-36 fatty acid triglyceride, C20-40 alkyl stearate, Japan wax, glyceryl stearate, sunflower wax, myristic acid, hydrogenated vegetable oils, jojoba ester, hydrogenated olive oil.

It is preferred according to the invention if the following compounds are used as waxes with a melting point of more than 50 ° C. at 1,013 bar:

Cetearyl behenate, cetearyl alcohol, behenyl alcohol, stearyl alcohol.

The preferred use concentration according to the invention of the waxes with a melting point of over 50 ° C. at 1,013 bar is 2 to 5% by weight, based on the total weight of the O / W emulsion.

Advantageous embodiments of the present invention are also characterized in that the waxes with a melting point of 40-50 ° C. at 1,013 bar are selected from the group of the compounds cetyl palmitate, cetyl alcohol, hydrogenated plant glyceride,

Myristyl alcohol, hydrogenated coconut glyeride, shea butter, hydrogenated rapeseed oil.

It is preferred according to the invention if the following compounds are used as waxes with a melting point of 40-50 ° C. at 1,013 bar:

Cetyl palmitate, cetyl alcohol, hydrogenated plant glyceride, myristyl alcohol, hydrogenated

Cocosglyeride.

The preferred use concentration of the waxes according to the invention with a melting point of 40-50 ° C. at 1,013 bar is 5 to 7% by weight, based on the total weight of the O / W emulsion.

The preferred use concentration according to the invention for the sum of both waxes, i.e. The total wax combination is: 8 to 12% by weight, based on the total weight of the O / W emulsion.

For the purposes of the present invention, it is advantageous if the oils which are liquid at 20 ° C. and 1,013 bar are selected from the group of the compounds rapeseed oil, almond oil, jojoba oil, Olus oil, vegetable oil, decyl oleate, macadamia oil, argan oil, coconut oil, avocado oil, peach kernel oil, sunflower oil, shea butter ethyl ester, caprylic / capric triglycerides, squalane, octyldodecanol, propylheptyl caprylate olive oil, grape seed oil, coco-caprylylate / coco-caprylate-ethoxylate / coco-caprylate-ethoxylate Stearates, dicaprylyl ether, octyl cocoate.

It is preferred according to the invention if the following compounds are used as oils which are liquid at 20 ° C. and 1,013 bar: jojoba oil, olus oil, vegetable oil, decyl oleates, rapeseed oil, almond oil, coconut oil, caprylic / capric triglycerides, octyldodecanol, Octyl cocoate.

The preferred use concentration according to the invention for these oils is 3-6% by weight, based on the total weight of the O / W emulsion.

According to the invention, it is particularly preferred if all oils and waxes used are of vegetable origin.

Otherwise, the lipophilic phase can contain the usual components of an emulsion oil phase.

Advantageous embodiments of the present invention are characterized in that the emulsifiers are selected from the group of the compounds sodium stearoyl glutamate, sodium cetearyl sulfate, potassium cetyl sulfate, glyceryl stearate SE, glyceryl stearate citrate,

Polyglyceryl-3 methylglucose distearate,

It is preferred according to the invention if the following compounds are used as emulsifiers: sodium stearoyl glutamate, sodium cetearyl sulfate,

It is advantageous according to the invention if the aqueous phase of the emulsion also contains 3 to 20% by weight, based on the total weight of the emulsion, of glycerol in addition to water.

In addition to the usual components of an aqueous phase of a cosmetic emulsion, the aqueous phase can also contain a water-soluble dye.

Embodiments of the present invention which are advantageous according to the invention are characterized in that the propellant gas is selected from the group of air and nitrogen.

It is advantageous according to the invention if the preparation selects one or more active substances from the group of compounds of UV filters, glycyrrhetinic acid, urea, arctiin, alpha-lipoic acid, folic acid, phytoene, D-biotin, coenzyme Q10, hyaluronic acid, alpha-glucosyl rutin , Carnitine, carnosine, natural and / or synthetic isoflavonoids, flavonoids, creatine, creatinine, taurine, b-alanine, panthenol, magnolol, honokiol, polydocanol, Contains glyceryl glycose, tocopherol, tocopherol acetate, ascorbic acid, ascorbyl palmitate, sodium hyaluronate, caffeine and / or licochalcone A.

Advantageous embodiments of the present invention are also characterized in that the cosmetic foam is phenoxyethanol, propylene glycol, butylene glycol, 2-methylpropane-1,3-diol, ethylhexylglycerol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol and / or contains 1,2-decanediol. A combination of is preferred according to the invention

Ethylhexylglycerol and phenoxyethanol.

It is also advantageous for the invention if the foam is free from fatty acids, their ethers or esters and ethanol and does not use propane, butane, dimethyl ether or fluorine / chlorine hydrocarbons as the propellant. Also on cationic surfactants like

Cetrimonium chloride, cetrimonium bromide etc. should be avoided.

It is also advantageous according to the invention if the O / W emulsion contains at least two consistency agents selected from the group of the compounds sodium polyacrylate, C10-30 alkyl acrylate crosspolymer, carbomer, carragenan, xantham rubber, gelatin rubber, ammonium acryloyldimethyl taurate / VP copolymer, tapioca starch.

In such a case, the embodiments which are advantageous according to the invention are characterized in that the consistency adjusters are contained in a total amount of 0.5 to 4% by weight, based on the total weight of the O / W emulsion.

It is advantageous according to the invention if the aqueous phase of the O / W emulsion contains EDTA and / or its sodium salts and / or dyes.

Advantageous embodiments of the present invention are characterized in that the preparation one or more perfume substances selected from the group of the compounds compounds limonene, citral, linalool, alpha-isomethylionone, geraniol, citronellol, 2-isobutyl-4-hydroxy-4-methyltetrahydropyran, 2 -tet-pentylcyclohexyl acetate, 3-methyl-5-phenyl-1-pentanol, 7-acetyl-1, 1, 3,4,4,6-hexamethyltetralin, adipic acid diester, alpha-amylcinnamaldehyde, alpha-methylionone, amyl C, butylphenylmethyl propionalcinnamal, amyl salicylate, Amylcinnamylalkohol, anisyl alcohol, benzoin, benzyl alcohol, benzyl benzoate, benzyl cinnamate, benzyl salicylate, bergamot oil, bitter orange oil, Butylphenylmethylpropioal, Cardamom oil, cedrol, cinnamal, cinnamyl alcohol, Citronellylmethylcrotonat, lemon oil, coumarin, diethyl succinate, ethyl linalool, eugenol, ethylene, Evernia Furfuracea Extract , Evernia Prunastri Extract, Farnesol, Guaiac Wood Oil, Geraniol, Hexylcinnamal, Hexylsalicylate, Hydroxyci tronellal, lavender oil, lemon oil, linaylacetate, mandarin oil, menthyl PCA, Contains methylheptenone, nutmeg oil, rosemary oil, sweet orange oil, terpineol, thymol, tonka bean oil, triethyl citrate and / or vanillin.

According to the invention is also a crucible containing a cosmetic foam as described in more detail above.

According to the invention is also a method for producing and filling a cosmetic foam as described above, characterized in that

i) the emulsion is first produced in a mixing container

ii) is kept at a constant temperature in a storage container,

iii) the emulsion is transferred from the storage container into a gassing device in which the emulsion is gassed with mixing and under pressure,

iv) the fumigated emulsion is kept in a compensation tank under constant pressure and temperature,

v) the crucibles are then filled with the aid of a piston stroke system via a metering unit, the pressure equalizing with the ambient pressure being achieved by filling the crucible, the gas in the emulsion expanding as a result of the pressure drop which occurs.

For step i) it is advantageous according to the invention to use a Becomix mixer.

According to the invention, it is preferred not to apply the emulsion in step i) and ii)

Cool temperatures below the frothing temperature and in step ii)

To keep the foaming temperature. It is also preferred according to the invention to stir the emulsion only slightly in step ii) in order to avoid premature introduction of gas.

According to the invention, gassing in step iii) is preferably carried out with the aid of a dynamic foam generator. A rotor-stator system has e.g. from Hansa Mixer or HAAS-Mondomix as advantageous according to the invention. A temperature range from 35 ° C. to 50 ° C. is advantageously selected as the foaming temperature according to the invention, so that the heat generated by the friction of the foam generator may have to be dissipated by cooling. According to the invention, it is also advantageous to ensure a back pressure during the gassing and until the filling, so that the gas only expands in the crucible. According to the invention, a back pressure of 1.5 to 3 bar is advantageous. Furthermore, it is preferred according to the invention if the foam cools only after filling in the crucible.

Last but not least, according to the invention are foams which have been produced and filled using this method. Examples

The following examples are intended to illustrate the present invention without restricting it. Unless otherwise stated, all quantities, proportions and percentages are based on the weight and the total quantity or on the total weight of the preparations.

liquid at room temperature

Making the Bulk:

The cosmetic preparation is made using a homogenizer such as e.g. Get Becomix 125 CD by following these steps:

(I) The water phase is introduced and heated to 75 ° C.

(II) The fat phase is melted in a further kettle at 75 ° C

(III) The thickener is suspended in oil and added to the fat phase

(IV) The fat phase is added to the water phase, mixed and cooled to 65 ° C.

At 65 ° C the homogenization takes place by switching on the homogenizer

(V) After cooling the batch to the gassing temperature (35-50 ° C, depending on

Formulation), other temperature-sensitive components such as perfume substances or, if necessary, preservatives can be added and the batch can be gassed

Bulk fumigation:

The bulk is mixed using a homogenizer such as e.g. Becomix 125 CD manufactured and possibly transferred to a tempered storage container. The mass is fed to the fumigation unit (e.g. Hansa mixer) with the help of a pump

(I) The amount of gas is dosed based on the bulk density and gas density

(II) The foaming temperature is chosen so that part of the waxes in the

Formulation are already crystallized, but the formula is still fluid. It has proven to be advantageous if the fumigation unit is cooled if, for example, friction causes the temperature in the fumigation unit to rise, so that the temperature increase in the fumigation unit does not exceed 7 ° C.

(III) The mass flow is adjusted so that a uniformly fumigated mass is achieved.

(IV) In the fumigation unit, the mass is kept under pressure by means of a back pressure valve installed after the fumigation unit. According to the invention, a pressure of 1.4 to 4 bar in the gassing unit is advantageous.

^* liquid at room temperature

The bulk and foam are prepared as in Examples A-E.

Claims

1. Containing cosmetic foam

a) containing an oil-in-water emulsion (O / W emulsion)

the O / W emulsion being free from polyethylene glycols and their ethers or esters, polypropylene glycols and their ethers and esters, surfactants, proteins, mineral oils and waxes, silicone oils and waxes, parabens, isothiazolinones and 3-iodopropargyl / V-butyl carbamate (IPBC),

such as

b) 20-50% by weight of one or more propellants.

2. Cosmetic foam according to claim 1, characterized in that the emulsion has a solid fat content at 40 ° C of at least 40%, measured by means of DSC measurement.

3. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the density of the foam is 0.5 to 0.8 g / ml.

4. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the waxes with a melting point of over 50 ° C. at 1,013 bar are selected from the group of the candellila wax compounds,

Carnauba wax cetearyl behenate, cetearyl alcohol, behenyl alcohol, stearyl alcohol, C18-38 alkyl hydroxystearoyl stearate, beeswax, lanolin alcohol, C18-36

Fatty acid triglyceride, C20-40 alkyl stearate, Japanese wax, glyceryl stearate,

Sunflower wax, myristic acid, hydrogenated vegetable oils, jojoba esters, hydrogenated olive oil.

5. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the waxes with a melting point of 40-50 ° C. at 1,013 bar are selected from the group of the compounds cetyl palmitate, cetyl alcohol,

Hydrogenated plant glyceride, myristyl alcohol, hydrogenated coconut glyeride, shea butter, hydrogenated rapeseed oil.

6. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the oils which are liquid at 20 ° C. and 1,013 bar are selected from the group of the compounds rapeseed oil, almond oil, jojoba oil, olus oil, vegetable oil, decyl oleate, macadamia oil, argan oil, coconut oil, avocado oil, peach kernel oil,

Sunflower oil, shea butter ethyl ester, Caprylic / Capric T riglyceride, Squalane,

Octyldodecanol, propylheptyl caprylate olive oil, grape seed oil, coco-caprylate / caprate, decyl cocoate, coco-caprylate, ethylhexyl stearate, dicaprylyl ether, octyl cocoate.

7. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the emulsifiers are selected from the group of

Compounds sodium stearoyl glutamate, sodium cetearyl sulfate, potassium cetyl sulfate,

Glyceryl stearate SE, glyceryl stearate citrate, polyglyceryl-3 methylglucose distearate.

8. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the aqueous phase of the emulsion contains 3 to 20% by weight, based on the total weight of the emulsion, of glycerol.

9. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the propellant gas is selected from the group of air and nitrogen.

10. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the preparation one or more active ingredients selected from the group of compounds of UV filters, glycyrrhetic acid, urea, arctiin, alpha-lipoic acid, folic acid, phytoene, D-biotin, coenzyme Q10, hyaluronic acid, alpha-glucosylrutin, carnitine, carnosine , natural and / or synthetic isoflavonoids, flavonoids, creatine, creatinine, taurine, b-alanine, panthenol, magnolol, honokiol,

Polydocanol, glycerylglycose, tocopherol, tocopherol acetate, ascorbic acid,

Ascorbyl palmitate, sodium hyaluronate, caffeine and / or licochalcon A.

11. Cosmetic foam according to one of the preceding claims

characterized in that the preparation contains phenoxyethanol, propylene glycol, butylene glycol, 2-methylpropane-1,3-diol, ethylhexylglycerol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol and / or 1,2-decanediol.

12. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the foam is free of fatty acids, their ethers or esters and ethanol and as propellant no propane, butane, dimethyl ether or fluorine / chlorine

Hydrocarbons used.

13. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the O / W emulsion contains at least two consistency agents selected from the group of the compounds sodium polyacrylate, C10-30 alkyl acrylate crosspolymer, carbomer, carragenan, xanthan gum, gelatin gum, tapioca starch.

14. Cosmetic foam according to one of the preceding claims, characterized in that the consistency agents are contained in a total amount of 0.5 to 4% by weight, based on the total weight of the O / W emulsion.

15. Cosmetic foam according to one of the preceding claims, characterized

characterized in that the aqueous phase of the O / W emulsion contains EDTA and / or its sodium salts, and / or dyes.

16. A crucible containing a cosmetic foam according to one of the preceding

Expectations.

17. A method for producing and filling a cosmetic foam according to one of the preceding claims, characterized in that

i) the emulsion is first prepared in a mixing container, ii) it is kept at a constant temperature in a storage container,

iii) the emulsion is transferred from the storage container to a gassing device in which the emulsion is gassed with mixing and under pressure, iv) the gassed emulsion is kept in a compensation tank at constant pressure and temperature,