Hydrogen peroxide formulations in barrier films with a metallized layer

Description

[0001] The present invention lies in the field of cosmetics and relates to a product for the oxidative color change of keratin fibers, in particular human hair, which product comprises an oxidizing agent-containing composition packaged in a package. The oxidizing agent-containing composition contains at least one C 8 -C 30 alcohol and at least one non-ionic surfactant. The package is made from a special multilayer film composite system, the wall of which comprises at least two polymeric layers and a barrier layer. The barrier layer has a penetration barrier effect for gases and water vapor. The barrier layer comprises a metal.

[0002] Changing the color of keratin fibers, especially hair, represents an important area of modern cosmetics. This allows the appearance of the hair to be adapted to both current fashion trends and the individual's wishes. Professionals know various options for changing the color of hair. The use of direct dyes can temporarily alter the hair color. In this process, the fully formed pigments diffuse from the coloring agent into the hair fiber. Coloring with direct dyes is associated with minimal hair damage; however, a disadvantage is the short shelf life and the rapid washout of the colorings achieved with direct dyes.

[0003] If the consumer desires a long-lasting color result or a shade lighter than their original hair color, oxidative color-changing agents are typically used. For permanent, intense colorings with corresponding fastness properties, so-called oxidation dyes are used. Such dyes typically contain oxidation dye precursors, so-called developer components, and coupler components, which, under the influence of oxidizing agents—usually hydrogen peroxide—form the actual dyes. Oxidation dyes are characterized by excellent, long-lasting coloring results.

[0004] Oxidative color-changing agents are typically marketed as two-component products, consisting of two different preparations packaged separately in two separate containers and mixed together shortly before use. The first preparation is a formulation—usually acidic for stability reasons—that contains, for example, hydrogen peroxide as an oxidizing agent in concentrations of 1.5 to 12% by weight. The oxidizing agent formulation is usually in the form of an emulsion or dispersion and is usually supplied in a plastic bottle with a resealable outlet (developer bottle).

[0005] This oxidizing agent formulation is mixed with a second preparation before application. This second preparation is an alkaline formulation, often in the form of a cream or gel. If a color change is desired along with the lightening effect, it also contains at least one oxidation dye precursor. This second preparation can be provided, for example, in the form of a tube or a plastic or glass container.

[0006] In the conventional application described above, the second preparation, which contains the alkalizing agent and / or the oxidation dye precursors, is transferred from the tube or container into the developer bottle and then mixed with the hydrogen peroxide preparation already in the developer bottle by shaking. In this way, the application mixture is created in the developer bottle. Application to the hair is then carried out via a small spout or outlet opening on the top of the developer bottle. The spout or outlet opening is opened after shaking, and the application mixture can be dispensed by squeezing the flexible developer bottle.

[0007] The use of the developer bottle requires a certain amount of routine from the user, so some users prefer to prepare the application mixture in a mixing bowl and apply it using a brush.

[0008] When preparing the application mixture in a tray, both components—the first preparation containing the oxidizing agent and the second preparation containing alkalizing agent and / or oxidation dye precursors—are transferred completely into a tray or similar container and mixed there, for example, using a brush. The application mixture is then removed from the mixing tray using the brush. With this application method, the use of a bulky and expensive developer bottle is unnecessary, and the search for inexpensive and material-saving packaging forms for the oxidizing agent preparation is still ongoing.

[0009] In this context, packaging in the form of bags or pouches, which are usually made of plastic or metal foils, is a cost-effective form of packaging with low material consumption.

[0010] Such packaging can be produced, for example, by gluing or hot-pressing two superimposed plastic films together, with the bonding occurring along all edges of the films. The interior of the packaging (i.e., the plastic bag) created by the bonding can then be filled with the desired cosmetic preparation. The packaging can be opened by tearing or cutting open the plastic bag.

[0011] However, filling oxidizing agent preparations into such packaging is associated with problems caused by the reactivity of the oxidizing agent. Oxidizing agents are highly reactive substances that decompose in small amounts, releasing oxygen (i.e., gas), depending on storage conditions and the presence of corrosive contaminants.

[0012] The developer bottles known from the prior art are generally only filled to a maximum of half, usually only one-third, of their internal volume with the oxidizing agent composition. Developer bottles are generally made of polyethylene. Since polyethylene is permeable to both water vapor and other gases, little or no excess pressure builds up inside the developer bottle. Furthermore, developer bottles are usually equipped with sturdy, thick walls and a sturdy screw cap, so that the diffusion of water vapor or gases is reduced by the thickness of the walls, and a slight increase in pressure inside the bottle has no negative effects.

[0013] In contrast, pouch-shaped packaging is usually completely filled with the liquid preparation, and there is virtually no excess air space in the filled pouch. Furthermore, such packaging should be flexible, and upon opening (e.g., tearing or cutting), no uncontrolled release of the preparation should occur. For this reason, the development of excess pressure in the packaging of liquid preparations should be avoided wherever possible.

[0014] If an oxidizing agent composition is contained in such a package, the gas (oxygen) generated during storage can cause the package to expand. Since the edges of the package are usually only glued, excessive expansion can, in the worst case, lead to the package bursting. For these reasons, the choice of film material for the packaging is of great importance when storing compositions containing oxidizing agents.

[0015] Packaging made of pure plastic, such as polyethylene or polypropylene, is permeable to both water vapor and gases. Therefore, when a preparation containing an oxidizing agent is stored in polyethylene or polypropylene packaging, the packaging does not expand. However, due to the high permeability of the relatively thin packaging film to water vapor, the water content of the preparation decreases. If the preparation is stored in the packaging for several weeks to months, the water loss exceeds the maximum permitted for sufficient storage stability.

[0016] The production of suitable packaging for formulations containing hydrogen peroxide is a challenge. The oxygen and water vapor permeability properties described above must be adjusted to ensure sufficient storage stability. The film's layer thickness should be kept as low as possible for environmental protection and resource conservation reasons. Furthermore, the layer thickness naturally also influences production costs. Against this backdrop, thin layers are desirable, but they do not always guarantee sufficient mechanical strength. When different materials are combined in a multilayer film to meet a broad range of requirements, the manufacturability of the multilayer film must also be ensured.Certain materials cannot be combined with each other because the cohesion between layers is not always sufficient or because their processing temperatures can be so different that joint processing is difficult.

[0017] Finally, the film materials are particularly important when storing a multi-component system, as substances from the multi-component system can diffuse into the film and promote detachment of the layers that make up the film. The choice of components in a hydrogen peroxide-containing formulation therefore also influences the choice of packaging.

[0018] The object of the present application was to package hydrogen peroxide-containing formulations in such a way that the mechanical strength of the packaging is sufficiently high to enable safe storage, but that easy accessibility to the ingredients is ensured.

[0019] DE 102015223838 A1 relates to products for oxidative color change, comprising a sachet-shaped package containing an oxidizing agent preparation. The example section of DE 102015223838 A1 initially describes the production of a package made of film material, which is then filled with a cosmetic preparation.

[0020] Surprisingly, it has now been discovered that oxidizing agent-containing compositions can be packaged with low water vapor permeability, and swelling can be reduced by allowing a certain degree of oxygen permeability in the film. The films consist of a special film composite system and additionally feature a barrier layer. By reducing the water vapor permeability while maintaining a sufficiently high oxygen permeability, the tendency for swelling to occur due to oxygen formed from the hydrogen peroxide is reduced, and mechanical strength is increased over time.

[0021] The present invention relates to a cosmetic product for changing the natural colour of keratin fibres, in particular human hair, comprising (i) at least one packaging (VP) comprising at least one multilayer film (F) containing at least one first polymer layer (P1), at least one second polymer layer (P2) and at least one barrier layer (BS), and (ii) at least one cosmetic composition (KM) packaged in the packaging (VP) and containing: a) at least one oxidizing compound, b) at least one C 8 -C 30 alcohol, and c) at least one non-ionic surfactant, wherein the first polymer layer (P1) is formed from polyethylene terephthalate; the second polymer layer (P2) is formed from polyethylene; and the barrier layer (BS) is formed from metallized, oriented polypropylene.

[0022] Keratin fibers, keratin-containing fibers, or keratin fibers are understood to mean fur, wool, feathers, and especially human hair. Although the agents according to the invention are primarily suitable for lightening and coloring keratin fibers, in principle, there is nothing to prevent their use in other areas as well.

[0023] The product according to the invention is a product for the oxidative color change of keratin fibers, i.e., a product that is applied to the human head to achieve oxidative coloring, lightening, bleaching, or shading of the hair. Shading, in this context, is understood to mean coloring in which the color result is lighter than the original hair color. The fact that the product is intended to be used "to change the natural color" is intended to mean that the product either comprises only an oxidizing agent for bonding, or that the product comprises an oxidizing agent that is used with a coupler not belonging to the invention to achieve a color change, or that the product is used with a dye not belonging to the invention for further tinting.

[0024] Furthermore, the term "packaging" is understood according to the invention to mean packaging, which is preferably in the form of a sachet. A sachet is a small package in the form of a pocket or bag, which is often used for packaging cosmetics. The capacity of the packaging, in particular of the sachet, can be, for example, 5 to 1000 ml, preferably 10 to 200 ml, and particularly preferably 20 to 50 ml.

[0025] Furthermore, a multilayer film (F) in the context of the present invention is understood to mean a thin, flat, and windable web composed of the at least one polymer layer (P1) and the at least one polymer layer (P2). This multilayer film (F) forms the wall of the packaging (VP). The packaging additionally contains a barrier layer (BS), which specifically enables or reduces the passage of water vapor and other gases, such as oxygen.

[0026] The cosmetic product according to the invention comprises, as a first component, a packaging (VP) which comprises at least one multilayer film (F). This film contains at least a first polymer layer (P1), at least a second polymer layer (P2) and at least one barrier layer (BS). This multilayer film represents the wall or outer shell of the packaging. As described above, such packaging is usually produced by gluing, pressing or welding two superimposed pieces of film (wherein the packaging (VP) is simultaneously filled with the cosmetic composition (KM)), i.e. such packaging is sealed at all edges. This packaging can be opened, for example, by tearing or cutting.

[0027] The thickness of the multilayer film (F) determines the mechanical properties and strength of the films. It should be designed to ensure sufficient mechanical stability, but at the same time the film (F) - and thus the packaging (VP) made from the film - is flexible enough to allow complete removal of the cosmetic composition (KM) from the opened packaging (VP) by compression or squeezing. A film meets these requirements if the film (F) has a certain total thickness. Preferred embodiments of the present invention are therefore characterized in that the at least one multilayer film has a total thickness of 28 µm to 220 µm, preferably of 52 µm to 180 µm, more preferably of 80 µm to 140 µm. For the purposes of the present invention, the total thickness of the film (F) is understood to be the sum of the thicknesses of all individual layers of which the film (F) consists.

[0028] The arrangement of layers (P1), (P2), and (BS) within the multilayer film (F) can vary. Furthermore, it is also possible for the film (F) to comprise additional layers in addition to the previously mentioned layers. Furthermore, it is advantageous according to the invention if all previously mentioned layers are oriented parallel to the surfaces of the film (F), i.e., all layers have the same orientation. If the multilayer film (F) contains the three layers (P1), (P2), and (BS) described above, the following arrangements of the layers would be possible (viewed from the interior (in contact with the cosmetic composition (KM)) to the exterior): a) *Interior* - layer (P1) - layer (P2) - barrier layer (BS) - *outside*, b) *Interior* - layer (P1) - barrier layer (BS) - layer (P2) - *outside*, c) *Interior* - layer (P2) - layer (P1) - barrier layer (BS) - *outside*, d) *Interior* - layer (P2) - barrier layer (BS) - layer (P1) - *outside*, e) *Interior* - barrier layer (BS) - layer (P1) - layer (P2) - *outside*, f) *Interior* - barrier layer (BS) - layer (P2) - layer (P1) - *outside*.

[0029] According to the invention, however, it is preferred if the barrier layer (BS) is arranged between the first polymer layer (P1) and the second polymer layer (P2), with the second polymer layer (P2) being located on the outside of the packaging. In this case, the multilayer film (F) consists of three layers, with layer (P1) being innermost and in contact with the cosmetic composition (KM). Layer (P1) is in contact with the barrier layer (BS), and the barrier layer (BS) in turn is in contact with layer (P2). In this layer, layers (P1) and (P2) are not adjacent to one another, but are separated by the barrier layer (BS).The particular advantage of this arrangement is that the - often very thin - barrier layer (BS) is located neither on the inner nor on the outer surface of the multilayer film (F), but is protected towards the inside by the polymer layer (P1) and towards the outside by the polymer layer (P2). In this way, mechanical abrasion or mechanical destruction of the barrier layer (BS) can be avoided as best as possible with this arrangement. It is therefore advantageous within the scope of the present invention if the at least one multilayer film (F) contains the at least one barrier layer (BS) between the at least one first polymer layer (P1) and the at least one second polymer layer (P2).The use of such packaging has proven particularly advantageous in terms of increased storage stability, as this arrangement exhibits neither swelling nor delamination upon prolonged contact with an oxidizing agent-containing composition. In another preferred embodiment, the barrier layer (BS) is also arranged between the two polymer layers P1 and P2, but the first polymer layer (P1) is located on the outside of the packaging.

[0030] According to the invention, the outer side of the packaging (VP) is understood to be the side of the packaging that does not come into contact with the cosmetic composition (CM), but rather with the environment. The use of such packaging has proven particularly advantageous in terms of increased storage stability, since this arrangement exhibits neither swelling nor delamination upon prolonged contact with a composition containing an oxidizing agent.

[0031] According to the present invention, the at least one first polymer layer (P1) is formed from polyethylene terephthalate. The term "is formed" is understood according to the invention to mean that the polymer layer contains at least 70 wt. %, preferably at least 80 wt. %, more preferably at least 90 wt. %, in particular at least 99 wt. %, in each case based on the total weight of the polymer layer (P1), of the aforementioned compounds. Polyethylene terephthalate (PET) is a polymer from the group of polyesters. Polyethylene terephthalate can be produced, for example, by transesterification of dimethyl terephthalate with ethylene glycol at elevated temperatures. During this transesterification reaction, methanol is split off, which is then removed by distillation. The resulting bis(2-hydroxyethyl) terephthalate is converted to PET by polycondensation, which again produces ethylene glycol.Another method for producing polyethylene terephthalate is the direct polycondensation of ethylene glycol and terephthalic acid at high temperatures, with the resulting water being distilled off. Polyethylene terephthalate is characterized by particularly high mechanical strength. Using the PET layer as the outer layer offers the additional advantage that the layer underneath can be printed without the print being rubbed off. The PET layer is transparent and provides a mechanical protective layer for the printed layer.

[0032] According to a preferred embodiment of the present invention, the layer thickness of the first polymer layer (P1) is 4 µm to 50 µm, preferably 5 µm to 35 µm, more preferably 6 µm to 20 µm. The layer thickness of the PET layer used according to the preferred embodiment is associated with particular advantages, which are related to the general properties of PET. PET is characterized by high dimensional stability / stiffness. If PET with these layer thicknesses is selected as the first polymer layer (P1), this offers advantageous mechanical dimensional stability for the film. At the same time, the overall thickness of the film can be kept low, so that a film that conserves materials and resources can be provided.

[0033] Furthermore, the multilayer film (F) from which the packaging is produced comprises a second polymer layer (P2) made of a second polymeric material. In the context of the present invention, the at least one second polymer layer (P2) is formed from polyethylene. The term "is formed" is understood according to the invention to mean that the polymer layer contains at least 70 wt. %, preferably at least 80 wt. %, more preferably at least 90 wt. %, in particular at least 99 wt. %, in each case based on the total weight of the polymer layer (P2), of the aforementioned compounds.

[0034] According to the invention, the second polymeric material of the second layer (P2) of the multilayer film (F) is polyethylene. Polyolefins are polymers produced from alkenes such as ethylene, propylene, 1-butene, or isobutene by chain polymerization. Polyolefins are saturated hydrocarbons. They are semi-crystalline thermoplastics that are easy to process. They are characterized by good chemical resistance. Polyethylene and polypropylene are very widely used in film applications. According to the invention, polyethylene is used for the second layer (P2). Polyethylene is produced by polymerizing ethylene using various catalysts. For example, polyethylene can be produced by polymerizing ethylene in the gas phase or in suspension.The average relative molecular weight can be controlled, for example, by adjusting a specific hydrogen partial pressure during ethylene polymerization. Polyethylene can be processed, for example, by extrusion and stretch blow molding, or by compression molding, calendering, thermoforming, and cold forming.

[0035] The second polymer layer (P2) serves as a support layer. While polyethylene has the disadvantage of being permeable to oxygen and water vapor, it has the advantage of being cost-effective and, due to its low melting point—lower than that of polypropylene—easy and energy-efficient to process.

[0036] According to a preferred embodiment of the present invention, the second polymer layer (P2) has a specific layer thickness. According to the preferred embodiment, the second polymer layer (P2) has a layer thickness of from 20 µm to 150 µm, preferably from 30 µm to 110 µm, more preferably from 40 µm to 90 µm. Particularly preferably, the second polymer layer (P2) has a greater layer thickness than the first polymer layer (P1).

[0037] The polymer layers (P1) and (P2) of the multilayer film (F) comprise organic polymer materials, which generally have only an insufficient barrier effect against gases and water vapor. If the oxidizing agent-containing composition (KM) is packaged in a packaging (VP) made of a multilayer film (F) that only comprises the two organic polymer layers (P1) and (P2), water vapor can escape unhindered, so that the water content in the composition (KM) changes in an unacceptable manner during prolonged storage. In order to specifically minimize the uncontrolled escape of water vapor from the packaging (VP), the organic polymer layers (P1) and (P2) are therefore used in combination with a barrier layer (BS).

[0038] The barrier layer (BS) has a penetration barrier effect for gases and water vapor. According to the invention, this means that the barrier layer (BS) reduces and controls the permeation rate of water vapor and gases through the film. A film (F) according to the invention, which has a barrier layer (BS) in addition to layers (P1) and (P2), thus has reduced water vapor permeability and reduced gas permeability compared to a comparable film (with the same total thickness) that only has the two layers (P1) and (P2) but no barrier layer (BS).

[0039] According to the invention, the barrier layer (BS) is formed from metallized, oriented polypropylene. Polypropylene is also alternatively referred to as poly(1-methylethylene) and is a thermoplastic polymer belonging to the group of polyolefins. Polypropylene is produced by polymerizing propylene (propene) using various catalysts. For example, polypropylene can be produced by stereospecific polymerization of propylene in the gas phase or in suspension according to Giulio Natta. Polypropylenes according to the invention can be isotactic and thus highly crystalline, but also syndiotactic or amorphous. The average relative molar mass can be regulated, for example, by setting a specific hydrogen partial pressure during the polymerization of the propene. For example, polypropylene can have average relative molar masses of approximately 150,000 to 1,500,000 g / mol.Polypropylene can be processed, for example, by extrusion and stretch blow molding, or by pressing, calendering, thermoforming and cold forming.

[0040] Oriented polypropylene is understood by those skilled in the art to be a polypropylene film which, during production following an extrusion or calendering step, is stretched in the extrusion direction and / or at a 90° angle to the extrusion direction. The film is preferably stretched in both directions, i.e. films in which the barrier layer - or the entire film - is biaxially stretched, very particularly preferably simultaneously biaxially, are preferred. During the stretching step, the polymeric material is oriented. This is of great importance for the properties of the film layer, particularly in the case of polypropylenes, since the orientation step determines the shape of the crystalline domains of the polymeric material and thus the physical properties of the film.

[0041] The polypropylene film is metallized. Suitable metals include aluminum, magnesium, silicon, titanium, tin, and zirconium, especially aluminum. The metals are vapor-deposited onto the carrier film. According to a preferred embodiment of the present invention, the ratio of the layer thickness of metal to oriented polypropylene is from 1:1000 to 1:10, preferably from 1:500 to 1:50, more preferably from 1:200 to 1:100.

[0042] The production of films with barrier layers comprising inorganic material is known. The multilayer film (F) used according to the invention can also be produced by a process used in the prior art for the production of known films with barrier layers, as described, for example, in EP 1036813 A1, EP 2371539 A1, and EP 1541340 A1.

[0043] The barrier layer (BS) can also comprise a thin layer of inorganic-organic hybrid polymers. These polymers are known in the literature under the technical term ORMOCER polymers. A typical ORMOCER polymer can be produced, for example, by hydrolytic polycondensation of an organofunctional silane with an aluminum compound and optionally with an inorganic oxide component. Corresponding syntheses are disclosed, for example, in EP 0792846 B1, which is incorporated herein by reference. Inorganic-organic hybrid polymers (ORMOCER polymers) exhibit both inorganic and organic network structures. The formation of the inorganic silicate network structure can occur in the sol-gel process via the controlled hydrolysis and condensation of alkoxysilanes. By additionally incorporating metal alkoxides into the sol-gel process, the silicate network can be specifically modified.By polymerizing organofunctional groups introduced into the material by the organoalkoxylans, an additional organic network is formed. The ORMOCER polymers produced in this way can be applied to layers (P1) and / or (P2) using conventional application techniques (spraying, brushing, etc.).

[0044] The thicker the barrier layer (BS), the greater or stronger the barrier effect for gases and water vapor. The thickness of the barrier layer (BS) can therefore be selected depending on the desired barrier effect. According to a preferred embodiment of the present invention, the at least one barrier layer (BS) has a layer thickness of 4 µm to 25 µm, preferably 5 µm to 20 µm, more preferably 6 µm to 18 µm.

[0045] The material, structure, and layer thicknesses determine the permeability values of the film. The multilayer film (F) of the packaging of the cosmetic product according to the invention is characterized by advantageous properties with regard to oxygen permeability and water vapor permeability. The multilayer film exhibits an oxygen transmission rate (OTR) at 23°C and 50% relative humidity of 0.1 to 5 cc / m 2 < / d / bar, preferably 0.2 to 3.5 cc / m 2 < / d / bar, more preferably 0.5 to 2.5 cc / m 2 < / d / bar, and a water vapor permeability at 38°C and 100% relative humidity of 0.1 to 5 g / m 2 < d, preferably 0.2 to 3.5 g / m 2 < d, more preferably 0.5 to 2.5 g / m 2 < d.

[0046] According to the invention, the permeability values of the film (F) are advantageously adjusted. The film (F) thus imparts advantageous barrier properties to the packaging, in particular with regard to the permeability to water vapor ( English: Water Vapor Transmission Rate; WVTR; measured in the unit g / (m 2< d) or g / (m 2< 24h)) measured according to the method ASTM F 1249 at 38 °C ambient temperature and 100 % relative humidity, and for oxygen ( English: Oxygen Transmission Rate; OTR , measured in cm 3< / (m 2< d bar) or cm 3< / (m 2< 24h) - where cm 3< is synonymous with cc - at an atmospheric pressure of 1 bar) measured according to the ASTM D 3985 method at 23 °C ambient temperature and 50 % relative humidity.

[0047] In addition to the layers (P1), (P2), and (BS) described so far, the multilayer film (F) may additionally comprise one or more further layers. These further layers may be, for example, intermediate layers and / or adhesive layers. It is therefore preferred according to the invention for the at least one multilayer film (F) to additionally comprise at least one further layer selected from the group consisting of intermediate layers (SZ), adhesive layers (SK), and mixtures thereof.

[0048] For example, the films (F) can have additional interlayers (SZ) to increase mechanical stability. Interlayers can also prevent or minimize the permeation of polymers or residual monomers from a polymer layer into the cosmetic composition (CM).

[0049] To increase the bond strength, the films can also comprise one or more adhesive layers (SK) to reduce or prevent delamination (i.e. detachment or the formation of an air space) between two layers.

[0050] A particularly preferred product according to the invention is characterized in that the multilayer film (F) contains, in addition to the first polymer layer (P1), the second polymer layer (P2) and the barrier layer (BS), one or more further layers which are selected from intermediate layers (SZ) and / or adhesive layers (SK).

[0051] If the multilayer film (F) contains additional layers in addition to the layers (P1), (P2) and (BS), the following arrangements of the layers are possible (viewed from the interior (in contact with the cosmetic composition (KM)) to the exterior): a) *Interior* - layer (P1) - first adhesive layer (SK1) - layer (P2) - second adhesive layer (SK2) - barrier layer (BS) - *outside*, b) *Interior* - layer (P1) - adhesive layer (SK1) - layer (P2) - barrier layer (BS) - *outside*, c) *Interior* - layer (P1) - layer (P2) - second adhesive layer (SK2) - barrier layer (BS) - *outside*, d) *Interior* - barrier layer (BS) - first adhesive layer (SK1) - layer (P1) - second adhesive layer (SK2) - layer (P2) - *outside*, e) *Interior* - barrier layer (BS) - adhesive layer (SK) - layer (P1) - layer (P2) - *outside*, f) *Interior* - barrier layer (BS) - layer (S1) - adhesive layer (SK) - layer (P2) - *Outside*, g) *Inside* - layer (P1) - first adhesive layer (SK1) - barrier layer (BS) - second adhesive layer (SK2) - layer (P2) - *Outside*, h) *Inside* - layer (P1) - adhesive layer (SK) - barrier layer (BS) - layer (P2) - *Outside*,i) *Interior* - Layer (P1) - Barrier Layer (BS) - Adhesive Layer (SK) - Layer (P2) - *Exterior* ,

[0052] In any case, the film should be designed so that sufficient adhesive strength is provided between the films. According to a preferred embodiment of the present invention, the adhesive strength ( bond strength ) of the film is 0.1 to 10 N / 15 mm, preferably 1 to 8 N / 15 mm, more preferably 1.5 to 5 N / 15 mm. This is measured using the ASTM F-904 method. Adhesive strength is a physical measure of the adhesion force between the layers. The adhesive strength is based on the two layers of a film with the lowest adhesive strength between two layers of the same film. The adhesive strengths achieved according to the invention lead to advantageous mechanical stability over the storage life of the packaged cosmetic product.

[0053] The strength between two joined (sealed or sealed) films should also be sufficient. According to a preferred embodiment of the present invention, the seal seam strength ( seal strength ) of the packaging (VP) 10 to 40 N / 15mm, preferably 15 to 35 N / 15mm, more preferably 20 to 30 N / 15mm, under the conditions 150 °C, 2.54 cm (1") and 4 kg / cm 2< . The seal seam strength is measured according to the ASTM F-88 method under the conditions mentioned. The challenge with packaging is always to ensure the mechanical durability of the packaging while at the same time allowing easy accessibility to the contents for the user. Setting the seal seam strength to these values makes it possible to achieve both of these goals.

[0054] A seal seam is a seam used to seal the packaging. Typically, two films are placed on top of each other to seal the packaging, which are pressed together by a force perpendicular to the film surface. By heating the film in the area that is pressed together, parts of the pressed areas can fuse together, resulting in a welded seal. An adhesive can also be placed between the pressed films to strengthen the seam.

[0055] The product according to the invention comprises, as a second component, a cosmetic composition (KM) which is packaged in the packaging (VP) and which comprises at least one oxidizing agent, a linear C 8 to C 30 alcohol and a non-ionic surfactant.

[0056] The intended use of the product according to the invention is oxidative color change. For this purpose, as already described above, a cosmetic composition (CM) containing an oxidizing agent is usually mixed with a second preparation (B) prepared separately from (CM). In this way, the ready-to-use oxidative color-change agent is produced. Depending on whether the oxidative color change is intended to achieve bleaching, lightening, or coloring, preparation (B) can contain various ingredients. If pure lightening or bleaching is to be achieved, preparation (B) contains at least one alkalizing agent. If oxidative coloring is desired, preparation (B) often also contains oxidation dye precursors in addition to the alkalizing agent.In order to ensure that preparations (KM) and (B) can be mixed sufficiently quickly, both preparation (KM) and preparation (B) are usually flowable, aqueous or water-containing preparations.

[0057] According to the invention, the preparation (KM) is an aqueous preparation. The water content of the preparation (KM) can be, for example, 60 to 97 wt.%, preferably 75 to 93 wt.%, more preferably 78 to 91 wt.%, in particular 80 to 88.0 wt.%, based on the total weight of the preparation (KM). All weight data in wt.% refer to the total weight of water contained in the preparation (KM), which is related to the total weight of the preparation (KM).

[0058] The cosmetic composition (CM) contains, as its first essential ingredient a), at least one oxidizing agent. Certain oxidizing agents are preferably used here. Therefore, within the scope of the present invention, it is advantageous if the cosmetic composition (CM) contains at least one oxidizing compound selected from the group consisting of persulfates, chlorites, hydrogen peroxide, and addition products of hydrogen peroxide with urea, melamine, and sodium borate, in particular hydrogen peroxide. The use of hydrogen peroxide has proven particularly advantageous according to the invention.

[0059] The concentration of the oxidizing agent in the composition (KM) is determined, on the one hand, by legal requirements and, on the other hand, by the desired effect; preferably, 0.5 to 20.0 wt.% solutions in water are used. According to the invention, it is therefore preferred if the cosmetic composition (KM) contains the at least one oxidizing compound, in particular hydrogen peroxide, in a total amount of 0.5 to 20 wt.%, preferably 1.0 to 18 wt.%, more preferably 1.2 to 16 wt.%, in particular 1.5 to 15 wt.%, based on the total weight of the cosmetic composition (KM). The higher the content of oxidizing agent, in particular hydrogen peroxide, in the composition (KM), the greater the amount of gas produced upon partial decomposition of the oxidizing agent.Preparations containing oxidizing agents with higher concentrations are therefore much more difficult to package in a storage-stable manner than preparations with lower concentrations. The amount of hydrogen peroxide refers to 100% hydrogen peroxide.

[0060] In the course of the work leading to this invention, it was found that the product according to the invention is particularly suitable for the packaging and stable storage of highly concentrated hydrogen peroxide preparations (CM). Thus, packages according to the invention containing preparations (CM) with 9 to 12 wt.% hydrogen peroxide showed no volume changes (i.e., no swelling) and no unplanned openings (i.e., the packages did not burst), even after several weeks of storage at elevated temperatures.

[0061] The cosmetic composition (KM) contains, as a second essential ingredient b), at least one C 8 -C 30 alcohol. In this context, mixtures of linear C 16 -C 18 alcohols have proven particularly useful. Such mixtures, in combination with the further feature c) of the composition (KM), lead to excellent stabilization of the at least one oxidizing agent, in particular the hydrogen peroxide. It is therefore advantageous within the scope of the present invention if the cosmetic composition (KM) contains at least one C 10 -C 30 alcohol selected from the group consisting of linear C 10 -C 28 alcohols, linear C 12 -C 26 alcohols, linear C 14 -C 20 alcohols, linear C 14 -C 18 alcohols, and mixtures of the aforementioned alcohols, in particular a mixture of linear C 16 -C 18 alcohols.In the context of the present invention, the mixture of cetyl alcohol and stearyl alcohol known under the name cetearyl alcohol, in particular a mixture of 50% by weight of cetyl alcohol and 50% by weight of stearyl alcohol, based on the total weight of the mixture, has proven to be particularly advantageous.

[0062] The at least one C 8 -C 30 alcohol is preferably used in specific quantity ranges. Preferred embodiments of the present invention are therefore characterized in that the cosmetic composition (KM) contains the at least one C 8 -C 30 alcohol, in particular a mixture of linear C 16 -C 18 alcohols, in a total amount of 0.1 to 10 wt. %, preferably from 0.50 to 6.5 wt. %, more preferably from 1.0 to 6.0 wt. %, in particular from 1.5 to 5.0 wt. %, based on the total weight of the cosmetic composition (KM). The use of the above-mentioned total amounts of the at least one C 8 -C 30 alcohol, in particular the mixture of linear C 16 -C 18 alcohols, in combination with the other constituents of the cosmetic composition (KM), leads to particularly good stabilization of the oxidizing agent contained in this composition, in particular the hydrogen peroxide.

[0063] As a third essential component c), the cosmetic composition (CM) contains at least one nonionic surfactant. According to the invention, the term "nonionic surfactant" refers to amphiphilic (bifunctional) compounds that have at least one hydrophobic and at least one hydrophilic moiety. The hydrophobic radical is preferably a hydrocarbon chain with 8 to 28 carbon atoms, which can be saturated or unsaturated, linear or branched. This C8-C28 alkyl chain is particularly preferably linear. In contrast to anionic, cationic, zwitterionic, and amphiphilic surfactants, however, nonionic surfactants contain neither cationic nor anionic groups. Furthermore, these surfactants also lack any cationizable or anionizable groups, which can form cationic or anionic moieties depending on the pH.

[0064] The combination of fatty alcohol and nonionic surfactant achieves excellent dispersion of the components of the cosmetic composition (CM) and thus high storage stability. Furthermore, the use of such a combination leads to good dispersibility, especially miscibility, of the cosmetic composition (CM) with the preparation (B) containing the oxidation dye precursors.It is therefore preferred within the scope of the present invention if the cosmetic composition (KM) comprises at least one non-ionic surfactant selected from the group of (i) ethoxylated and / or propoxylated alcohols and carboxylic acids having 8 to 30 carbon atoms and 2 to 30 ethylene oxide and / or propylene oxide units per mole of alcohol, (ii) addition products of 30 to 50 moles of ethylene oxide with castor oil and hydrogenated castor oil, (iii) alkyl polyglucosides of the formula R 1< O-[G] p , in which R 1< represents an alkyl and / or alkenyl radical having 4 to 22 carbon atoms, G represents a sugar radical having 5 or 6 carbon atoms and p represents numbers from 1 to 10, (iv) monoethanolamides of carboxylic acids having 8 to 30 carbon atoms and (v) mixtures thereof, in particular addition products of 40 moles of ethylene oxide with hydrogenated castor oil. In the formula R 1< O-[G] p the index number p indicates the degree of oligomerization (DP), iethe distribution of mono- and oligoglucosides, and stands for a number between 1 and 10. While p in a given compound must always be an integer and can primarily assume the values p = 1 to 6, the value p for a specific alkyl oligoglucoside is an analytically determined calculated value which is usually a fractional number. According to the invention, preference is given to using alkyl and / or alkenyl oligoglucosides with an average degree of oligomerization p of 1.1 to 3.0. From an application point of view, preference is given to those alkyl and / or alkenyl oligoglucosides whose degree of oligomerization is less than 1.7 and in particular between 1.2 and 1.7. The alkyl or alkenyl radical R 1< can be derived from primary alcohols having 4 to 20, preferably 8 to 16, carbon atoms.According to the invention, alkyl oligoglucosides based on hydrogenated C 12 / 14 coconut alcohol with a DP of 1-3 are particularly preferred, as are commercially available, for example, under the INCI name "Coco-Glucoside." Nonionic surfactants particularly preferably used in the context of the present invention are addition products of 40 mol of ethylene oxide with hydrogenated castor oil, in particular the compound known under the INCI name PEG-40 Hydrogenated Castor Oil (CAS No.: 61788-85-0).

[0065] To ensure sufficient dispersion of all ingredients of the cosmetic agent (CM), the at least one nonionic surfactant is preferably used in specific total amounts. Preferred embodiments of the present invention are therefore characterized in that the cosmetic composition (CM) contains the at least one nonionic surfactant, in particular the mixture of linear C 16 -C 18 alcohols substituted with an average of 20 ethoxy groups, in a total amount of 0.1 to 5 wt. %, preferably 0.12 to 4.5 wt. %, preferably 0.25 to 4 wt. %, in particular 0.5 to 3.5 wt. %, based on the total weight of the cosmetic composition (CM).

[0066] The cosmetic composition (CM) may comprise at least one liquid cosmetic oil as a further component. Within the context of the present invention, the term "liquid cosmetic oils" refers to oils suitable for cosmetic use that are insoluble in water at 20°C, i.e., preferably less than 1% by weight of the oil, based on the total amount of the water-oil mixture, dissolves in water at 20°C. However, the cosmetic oil used according to the invention is neither a fragrance nor an essential oil. Preferably, paraffin oils are used as cosmetic oils within the context of the present invention. The use of cosmetic oils leads to increased stabilization of the oxidizing agent, in particular hydrogen peroxide.since, upon dispersion or emulsification with the cosmetic oil, it is surrounded by the latter and thus protected from decomposition as a result of the reaction with other components of the cosmetic composition (KM). Within the scope of the present invention, certain cosmetic oils are preferably used. It is therefore advantageous according to the invention if the cosmetic composition (KM) contains at least one liquid cosmetic oil selected from the group of (i) esters of linear or branched saturated or unsaturated C 2 -C 30 fatty alcohols with linear or branched saturated or unsaturated C 2 -C 30 fatty acids, which may be hydroxylated, (ii) C 8 -C 22 fatty alcohol esters of monohydric or polyhydric C 2 -C 7 hydroxycarboxylic acids, triethyl citrates, (iii) mono-, di- and triglycerides of linear or branched, saturated or unsaturated, optionally hydroxylated C 8 -C 30 fatty acids,(iv) dicarboxylic acid esters of linear or branched C 2 -C 10 alkanols, (v) symmetrical, asymmetrical or cyclic esters of carbonic acid with fatty alcohols, the esters of dimers of unsaturated C 12 -C 22 fatty acids with monohydric, linear, branched and cyclic C 2 -C 18 alkanols or C 2 -C 6 alkanols, (vi) benzoic acid esters of linear or branched C 8 -C 22 alkanols, such as benzoic acid C 12 -C 15 alkyl esters, isostearyl benzoate and octyldodecyl benzoate, (vii) synthetic hydrocarbons, such as polyisobutene and polydecenes, (viii) hydrocarbons, such as paraffins, and (ix) mixtures thereof, in particular liquid paraffin. In the context of the present invention, it has been found to be particularly advantageous if the liquid cosmetic oil used is paraffin oil, in particular the compound known under the INCI name Paraffinum Liquidqum (CAS No.: 8042-47-5),is used. Preferred paraffin oils according to the invention have dynamic viscosities at 20 °C of 20 to 150 mPa*s (measured according to DIN 51562-1 of 1999).

[0067] The at least one liquid cosmetic oil, in particular the at least one paraffin oil, is preferably present in the cosmetic compositions (KM) in specific total amounts. This achieves sufficient stabilization of the oxidizing agent, in particular the hydrogen peroxide. Preferred embodiments of the present invention are therefore characterized in that the cosmetic composition (KM) contains the at least one liquid cosmetic oil, in particular paraffin oil, in a total amount of 0.10 to 25 wt. %, preferably 2.0 to 24 wt. %, more preferably 4.0 to 22 wt. %, in particular 5.0 to 20 wt. %, based on the total weight of the cosmetic composition (KM).

[0068] In the course of the work leading to this invention, it has been found that the use of the aforementioned essential ingredients b) and c) ensures that the cosmetic composition (KM), which contains at least one oxidizing agent, can be packaged and stored in the special packaging (VP) without this packaging - which has a barrier layer with a penetration barrier effect for gases and water vapor - swelling or bursting.

[0069] In this context, a very specific combination of ingredients a) to c) of the cosmetic composition (CM) has proven advantageous. In a preferred embodiment, the product according to the invention is therefore characterized in that the cosmetic composition (CM) contains hydrogen peroxide, a mixture of linear C 16 -C 18 alcohols, and, as a nonionic surfactant, a mixture of linear C 16 -C 18 alcohols substituted with an average of 20 ethoxy groups.

[0070] To further optimize storage stability, the aforementioned compounds are preferably used in certain amounts in the preparation (CM). Particularly preferred embodiments are therefore characterized in that the cosmetic composition (CM) a) 1.5 to 15% by weight of hydrogen peroxide, b) 1 to 5% by weight of a mixture of linear C 16 -C 18 alcohols and c) 0.5 to 3.5% by weight of a mixture of linear C 16 -C 18 alcohols substituted by an average of 20 ethoxy groups, in each case based on the total weight of the cosmetic product (KM).

[0071] The cosmetic composition of the present invention may additionally contain at least one or more cationic surfactants. According to the invention, the term "cationic surfactant" refers to amphiphilic (bifunctional) compounds consisting of at least one hydrophobic and at least one hydrophilic molecular moiety. The hydrophobic radical is preferably a hydrocarbon chain having 8 to 28 carbon atoms, which may be saturated or unsaturated, linear or branched. This C8-C28 alkyl chain is particularly preferably linear. These surfactants also contain at least one cationic group, in particular an ammonium or alkylammonium group. Preference is given to using quaternary alkylammonium compounds, in particular tetraalkylammonium compounds having at least one C12- to C20-alkyl radical, with a physiologically acceptable anion, in particular a chloride.

[0072] Typical examples of these ingredients are Cetyl Trimethyl Ammonium Chloride, Steartrimonium Chloride, Behentrimonium Chloride, Stearamidopropyl Trimonium Chloride, Dioleylethyl Dimethyl Ammonium Methosulfate and Dioleylethyl Hydroxyethylmonium Methosulfate, especially Steartrimonium Chloride

[0073] The at least one cationic surfactant, in particular steartrimonium chloride, is preferably present in the cosmetic composition (KM) in specific total amounts. This ensures that the ready-to-use colorant can be applied to the hair in a stable dispersion. Preferred embodiments of the present invention are therefore characterized in that the cosmetic composition (KM) contains the at least one cationic surfactant in an amount of 0.01 to 2 wt. %, preferably in an amount of 0.05 to 1 wt. %, more preferably in an amount of 0.1 to 0.5 wt. %, in each case based on the total weight of the cosmetic composition.

[0074] The cosmetic composition (KM) preferably has an acidic pH to prevent or reduce decomposition of the oxidizing agent used, in particular the hydrogen peroxide. Therefore, within the scope of the present invention, it is preferred if the cosmetic composition (KM) has a pH (measured at 20°C) of pH 1.5 to pH 5.0, preferably of pH 2.0 to pH 4.7, preferably of pH 2.3 to pH 4.4, in particular of pH 2.5 to pH 4.

[0075] The preparation (CM) contained in the packaging (VP) contains the essential ingredients in an aqueous or aqueous-alcoholic carrier, which can be, for example, a cream, an emulsion, a gel, or a surfactant-containing foaming solution. To achieve the desired properties of these dosage forms, the preparation (CM) may also contain additional active ingredients, excipients, and additives.

[0076] The preparation (KM) may, for example, additionally contain one or more acids to stabilize the oxidizing agent used, in particular the hydrogen peroxide. It is therefore preferred within the scope of the present invention if the cosmetic composition (KM) additionally contains at least one acid selected from the group consisting of dipicolinic acid, citric acid, acetic acid, malic acid, lactic acid, tartaric acid, hydrochloric acid, phosphoric acid, pyrophosphoric acid and salts thereof, benzoic acid and salts thereof, 1-hydroxyethane-1,1-diphosphonic acid, ethylenediaminetetraacetic acid and salts thereof, sulfuric acid, and mixtures, in particular a mixture of dipicolinic acid, disodium pyrophosphate, benzoic acid and salts thereof, and 1-hydroxyethane-1,1-diphosphonic acid.

[0077] A particularly high degree of stabilization of the oxidizing agent, in particular hydrogen peroxide, is achieved when the aforementioned acids are used in specific amounts. It is therefore advantageous in this context if the at least one acid, in particular the mixture of dipicolinic acid, disodium pyrophosphate, benzoic acid and their salts, and 1-hydroxyethane-1,1-diphosphonic acid, is present in a total amount of 0.1 to 3.0 wt. %, preferably 0.5 to 2.5 wt. %, more preferably 0.8 to 2.0 wt. %, in particular 0.9 to 1.5 wt. %, based on the total weight of the cosmetic composition (CM).

[0078] The following tables list particularly preferred embodiments AF 1 to AF 32 of the cosmetic composition (KM) contained in the packaging (VP) (all data in wt.% unless otherwise stated). AF1 AF2 AF3 AF4 Oxidizing agent 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 alcohol 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 0,10 - 2,5 0,12 - 2,0 0,15 - 1,8 0,30 - 1,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF5 AF6 AF7 AF8 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 alcohol 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 0,5 - 3,5 0,5 - 3,5 0,5 - 3,5 0,30 - 4,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF9 AF10 AF11 AF12 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 0,10 - 2,5 0,12 - 2,0 0,15 - 1,8 0,30 - 1,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF13 AF14 AF15 AF16 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 0,5 - 3,5 0,5 - 3,5 0,5 - 3,5 0,30 - 4,5 Liquid cosmetic oil 0,10 - 25 2,0 - 24 4,0 - 22 5,0 - 20 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF17 AF18 AF19 AF20 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 5)< 0,10 - 2,5 0,12 - 2,0 0,15 - 1,8 0,30 - 1,5 Liquid cosmetic oil 0,10 - 25 2,0 - 24 4,0 - 22 5,0 - 20 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF21 AF22 AF23 AF24 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Non-ionic surfactant 5)< 0,5 - 3,5 0,5 - 3,5 0,5 - 3,5 0,30 - 4,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF25 AF26 AF27 AF28 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Cationic surfactant 4)< 0,10 - 3,0 0,12 - 2,5 0,15 - 2,0 0,20 - 1,5 Non-ionic surfactant 5)< 0,10 - 2,5 0,12 - 2,0 0,15 - 1,8 0,30 - 1,5 Liquid cosmetic oil 6)< 0,10 - 25 2,0 - 24 4,0 - 22 5,0 - 20 acid 0,1 - 3,0 0,5 - 2,5 0,8 - 2,0 0,9 - 1,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 AF29 AF30 AF31 AF32 Oxidizing agent 2)< 0,5 - 20 1,0 - 18 1,2 - 16 1,5 - 15 C 8 -C 30 -alcohol 3)< 0,10 - 7,0 0,50 - 6,5 1,0 - 6,0 1,5 - 5,0 Cationic surfactant 4)< 0,10 - 3,0 0,12 - 2,5 0,15 - 2,0 0,20 - 1,5 Non-ionic surfactant 5)< 0,5 - 3,5 0,5 - 3,5 0,5 - 3,5 0,30 - 4,5 Acid 7)< 0,1 - 3,0 0,5 - 2,5 0,8 - 2,0 0,9 - 1,5 Cosmetic carrier 1)< to 100 to 100 to 100 to 100 1)< aqueous or aqueous-alcoholic carrier 2)< hydrogen peroxide, amount calculated on 100% hydrogen peroxide, 3)< mixture of linear C 16 -C 18 alcohols, in particular cetearyl alcohol, 4)< quaternary ammonium compounds, in particular steartrimonium chloride, 5)< a mixture of linear C 16 -C 18 alcohols substituted with an average of 20 ethoxy groups, 6)< liquid paraffin, 7)< mixture of dipicolinic acid, disodium pyrophosphate, benzoic acid and their salts and 1-hydroxyethane-1,1-diphosphonic acid.

[0079] The previously described embodiments AF 1 to 32 are each packaged in packages (VP) having the following arrangement of the multilayer film (F) (viewed from the interior (in contact with the cosmetic composition (KM)) to the outside): a) *Interior* - layer (P1) - layer (P2) - barrier layer (BS) - *outside*, b) *Interior* - layer (P1) - barrier layer (BS) - layer (P2) - *outside*, c) *Interior* - layer (P2) - layer (P1) - barrier layer (BS) - *outside*, d) *Interior* - layer (P2) - barrier layer (BS) - layer (P1) - *outside*, e) *Interior* - barrier layer (BS) - layer (P1) - layer (P2) - *outside*, f) *Interior* - barrier layer (BS) - layer (P2) - layer (P1) - *outside*, g) *Interior* - layer (P1) - first adhesive layer (SK1) - layer (P2) - second adhesive layer (SK2) - barrier layer (BS) - *outside*, h) *Interior* - layer (P1) - adhesive layer (SK1) - layer (P2) - barrier layer (BS) - *outside*, i) *Interior* - layer (P1) - layer (P2) - second adhesive layer (SK2) - barrier layer (BS) - *outside*, j) *Interior* - barrier layer (BS) - first adhesive layer (SK1) - layer (P1) - second adhesive layer (SK2) - layer (P2) - *outside*,k) *Interior* - barrier layer (BS) - adhesive layer (SK) - layer (P1) - layer (P2) - *outside*, l) *Interior* - barrier layer (BS) - layer (S1) - adhesive layer (SK) - layer (P2) - *outside*, m) *Interior* - layer (P1) - first adhesive layer (SK1) - barrier layer (BS) - second adhesive layer (SK2) - layer (P2) - *outside*, n) *Interior* - layer (P1) - adhesive layer (SK) - barrier layer (BS) - layer (P2) - *outside*, o) *Interior* - layer (P1) - barrier layer (BS) - adhesive layer (SK) - layer (P2) - *outside*. ,

[0080] The inventive products obtainable in this way exhibit high storage stability and water loss during storage within acceptable limits. No swelling or delamination of the packaging (VP) was observed during storage of these cosmetic products according to the invention.

[0081] The product according to the invention is used for the purpose of oxidative color change. For this purpose, the preparation (KM) packaged in the packaging (VP), which is the oxidizing agent preparation, is mixed with at least one other preparation (B) to produce the ready-to-use color change agent. To prevent incompatibilities and to avoid premature reactions, the preparations (KM) and (B) are packaged separately.

[0082] A particularly preferred product according to the invention is characterized in that it comprises a preparation (B) formulated separately from the preparation (KM), wherein the preparation (B) contains at least one compound selected from oxidation dye precursors, direct dyes, alkalizing agents, and mixtures thereof. Preferred products of the present invention are therefore characterized in that they additionally comprise at least one second cosmetic composition (KM2) which contains at least one compound selected from oxidation dye precursors, direct dyes, alkalizing agents, and mixtures thereof and which is formulated separately from the cosmetic composition (KM).

[0083] If oxidative coloring is desired, preparation (B) contains at least one oxidation dye precursor. Oxidation dye precursors can be divided into developers and couplers, with developers usually being used in the form of their physiologically acceptable salts (e.g., in the form of their hydrochlorides, hydrobromides, hydrogen sulfates, or sulfates) due to their greater sensitivity to oxygen. Coupler components alone do not form any significant coloration during oxidative coloring, but always require the presence of developer components. Such agents preferably contain at least one oxidation dye precursor of the developer type and at least one oxidation dye precursor of the coupler type. Particularly suitable oxidation dye precursors of the developer type are selected from at least one compound from the group consisting of p-phenylenediamine, p-toluenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, 2-(1,2-Dihydroxyethyl)-p-phenylendiamin, N,N-Bis-(2-hydroxyethyl)-p-phenylendiamin, 2-Methoxymethyl-p-phenylendiamin, N-(4-Amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl)propyl]amin, N,N'-Bis-(2-hydroxyethyl)-N,N'-bis-(4-aminophenyl)-1,3-diamino-propan-2-ol, Bis-(2-hydroxy-5-aminophenyl)methan, 1,3-Bis-(2,5-diaminophenoxy)propan-2-ol, N,N'-Bis-(4-aminophenyl)-1,4-diazacycloheptan, 1,10-Bis-(2,5-diaminophenyl)-1,4,7,10-tetraoxadecan, p-Aminophenol, 4-Amino-3-methylphenol, 4-Amino-2-aminomethylphenol, 4-Amino-2-(1,2-dihydroxyethyl)phenol, 4-Amino-2-(diethylaminomethyl)phenol, 4,5-Diamino-1-(2-hydroxyethyl)pyrazol, 2,4,5,6-Tetraaminopyrimidin, 4-Hydroxy-2,5,6-triaminopyrimidin, 2-Hydroxy-4,5,6-triaminopyrimidin, 2,3-Diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-on sowie deren physiologisch verträglichen Salzen.,

[0084] Besonders geeignete Oxidationsfarbstoffvorprodukte vom Kuppler-Typ sind dabei ausgewählt aus der Gruppe, gebildet aus 3-Aminophenol, 5-Amino-2-methylphenol, 3-Amino-2-chlor-6-methylphenol, 2-Hydroxy-4-aminophenoxyethanol, 5-Amino-4-chlor-2-methylphenol, 5-(2-Hydroxyethyl)-amino-2-methylphenol, 2,4-Dichlor-3-aminophenol, 2-Aminophenol, 3-Phenylendiamin, 2-(2,4-Diaminophenoxy)ethanol, 1,3-Bis(2,4-diaminophenoxy)propan, 1-Methoxy-2-amino-4-(2-hydroxyethylamino)benzol, 1,3-Bis(2,4-diaminophenyl)propan, 2,6-Bis(2'-hydroxyethylamino)-1-methylbenzol, 2-({3-[(2-Hydroxyethyl)amino]-4-methoxy-5-methylphenyl}amino)ethanol, 2-({3-[(2-Hydroxyethyl)amino]-2-methoxy-5-methylphenyl}amino)ethanol, 2-({3-[(2-Hydroxyethyl)amino]-4,5-dimethylphenyl}amino)ethanol, 2-[3-Morpholin-4-ylphenyl)amino]ethanol, 3-Amino-4-(2-methoxy-ethoxy)-5-methylphenylamin, 1-Amino-3-bis-(2-hydroxyethyl)aminobenzol, Resorcin, 2-Methylresorcin, 4-Chlorresorcin, 1,2,4-Trihydroxybenzol, 2-Amino-3-hydroxypyridin,3-Amino-2-methylamino-6-methoxypyridine, 2,6-dihydroxy-3,4-dimethylpyridine, 3,5-diamino-2,6-dimethoxypyridine, 1-phenyl-3-methylpyrazol-5-one, 1-naphthol, 1,5-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 1,8-dihydroxynaphthalene, 4-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 4-hydroxyindoline, 6-hydroxyindoline, 7-hydroxyindoline or mixtures of these compounds or their physiologically acceptable salts.

[0085] In addition, preparation (B) may also contain one or more direct dyes. Suitable non-ionic direct dyes can be selected from the group consisting of HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1, HC Red 3, HC Red 7, HC Red 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, 1,4-Diamino-2-nitrobenzene, 2-Amino-4-nitrophenol, 1,4-Bis-(2-hydroxyethyl)-amino-2-nitrobenzene, 3-Nitro-4-(2-hydroxyethyl)aminophenol, 2-(2-Hydroxyethyl)amino-4,6-dinitrophenol, 4-[(2-Hydroxyethyl)amino]-3-nitro-1-methylbenzene, 1-amino-4-(2-hydroxyethyl)amino-5-chloro-2-nitrobenzene, 4-amino-3-nitrophenol, 1-(2'-Ureidoethyl)amino-4-nitrobenzene, 2-[(4-amino-2-nitrophenyl)amino]benzoic acid, 4-[(3-hydroxypropyl)amino]-3-nitrophenol, 4-nitro-o-phenylenediamine, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-4-nitrophenol.

[0086] Suitable anionic direct dyes can be selected from the group consisting of Acid Yellow 1, Yellow 10, Acid Yellow 23, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 52, Pigment Red 57:1, Acid Blue 7, Acid Green 50, Acid Violet 43, Acid Black 1, Acid Black 52, Bromophenol Blue and Tetrabromophenol Blue.

[0087] Suitable cationic substantive dyes are cationic triphenylmethane dyes, such as Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14, aromatic systems substituted with a quaternary nitrogen group, such as Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16 and Basic Brown 17, cationic anthraquinone dyes, such as HC Blue 16 (Bluequat B) and substantive dyes containing a heterocycle having at least one quaternary nitrogen atom, in particular Basic Yellow 87, Basic Orange 31 and Basic Red 51. The cationic substantive dyes marketed under the trademark Arianor are also suitable cationic substantive dyes according to the invention.

[0088] Dyeing processes on keratin fibers typically take place in an alkaline environment. However, to protect the keratin fibers and the skin as much as possible, setting an excessively high pH is undesirable. Therefore, it is preferred if the pH of agent (B) is between 7 and 11, especially between 8 and 10.5. The pH values within the meaning of the present invention are pH values measured at a temperature of 22°C.

[0089] Preparation (B) may contain at least one alkalizing agent. The alkalizing agents usable according to the invention for adjusting the preferred pH value can be selected from the group consisting of ammonia, alkanolamines, basic amino acids, and inorganic alkalizing agents such as (alkali earth) metal hydroxides, (alkali earth) metal metasilicates, (alkali earth) metal phosphates, and (alkali earth) metal hydrogenphosphates. Preferred inorganic alkalizing agents are magnesium carbonate, sodium hydroxide, potassium hydroxide, sodium silicate, and sodium metasilicate. Organic alkalizing agents usable according to the invention are preferably selected from monoethanolamine, 2-amino-2-methylpropanol, and triethanolamine. The basic amino acids usable as alkalizing agents according to the invention are preferably selected from the group consisting of arginine, lysine, ornithine, and histidine, particularly preferably arginine.However, in the course of the investigations relating to the present invention, it has been found that further preferred agents according to the invention are characterized in that they additionally contain an organic alkalizing agent. One embodiment of the first subject matter of the invention is characterized in that the agent additionally contains at least one alkalizing agent selected from the group consisting of ammonia, alkanolamines, and basic amino acids, in particular ammonia, monoethanolamine, and arginine or its compatible salts.

[0090] Preparation (B) may further contain additional active ingredients, excipients, and additives. For example, it may contain one or more fatty components from the group of C 12 -C 30 fatty alcohols, C 12 -C 30 fatty acid triglycerides, C 12 -C 30 fatty acid monoglycerides, C 12 -C 30 fatty acid diglycerides, and / or hydrocarbons.

[0091] Preferably, a surface-active substance can additionally be added to preparation (B), such surface-active substances being referred to as surfactants or emulsifiers depending on the field of application: they are preferably selected from anionic, zwitterionic, amphoteric and non-ionic surfactants and emulsifiers.

[0092] Preparation (B) preferably contains at least one anionic surfactant. Preferred anionic surfactants are fatty acids, alkyl sulfates, alkyl ether sulfates, and ether carboxylic acids with 10 to 20 carbon atoms in the alkyl group and up to 16 glycol ether groups in the molecule.

[0093] Furthermore, preparation (B) may additionally contain at least one zwitterionic surfactant. Preferred zwitterionic surfactants are betaines, N-alkyl-N,N-dimethylammonium glycinate, N-acylaminopropyl-N,N-dimethylammonium glycinate, and 2-alkyl-3-carboxymethyl-3-hydroxyethylimidazolines. A preferred zwitterionic surfactant is known by the INCI name Cocamidopropyl Betaine.

[0094] Furthermore, preparation (B) may contain at least one amphoteric surfactant. Preferred amphoteric surfactants are N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids, and alkylaminoacetic acids. Particularly preferred amphoteric surfactants are N-cocoalkylaminopropionate, cocoacylaminoethylaminopropionate, and C12-C18-acylsarcosine.

[0095] Furthermore, it has proven advantageous if preparation (B) contains additional non-ionic surfactants. Preferred non-ionic surfactants are alkyl polyglycosides and alkylene oxide addition products with fatty alcohols and fatty acids, each containing 2 to 30 moles of ethylene oxide per mole of fatty alcohol or fatty acid. Preparations with excellent properties are also obtained if they contain fatty acid esters of ethoxylated glycerol as non-ionic surfactants.

[0096] The nonionic, zwitterionic or amphoteric surfactants are used in proportions of 0.1 to 45 wt.%, preferably 1 to 30 wt.% and very particularly preferably 1 to 15 wt.%, based on the total weight of the preparation (B).

[0097] Preparation (B) may also contain at least one thickener. There are no fundamental restrictions regarding these thickeners. Both organic and purely inorganic thickeners can be used.Suitable thickeners are anionic, synthetic polymers, cationic, synthetic polymers, naturally occurring thickeners such as non-ionic guar gums, scleroglucan gums or xanthan gums, gum arabic, ghatti gum, karaya gum, tragacanth gum, carrageenan gum, agar-agar, locust bean gum, pectins, alginates, starch fractions and derivatives such as amylose, amylopectin and dextrins, as well as cellulose derivatives such as methylcellulose, carboxyalkylcelluloses and hydroxyalkylcelluloses, non-ionic, fully synthetic polymers such as polyvinyl alcohol or polyvinylpyrrolidinone; as well as inorganic thickeners, in particular layered silicates such as bentonite, especially smectites such as montmorillonite or hectorite.

[0098] Furthermore, the preparation (B) can contain further active ingredients, auxiliaries and additives, such as, for example, non-ionic polymers such as, for example, vinylpyrrolidinone / vinyl acrylate copolymers, polyvinylpyrrolidinone, vinylpyrrolidinone / vinyl acetate copolymers, polyethylene glycols and polysiloxanes; additional silicones such as volatile or non-volatile, straight-chain, branched or cyclic, crosslinked or non-crosslinked polyalkylsiloxanes (such as dimethicones or cyclomethicones), polyarylsiloxanes and / or polyalkylarylsiloxanes, in particular polysiloxanes with organofunctional groups, such as substituted or unsubstituted amines (amodimethicones), carboxyl, alkoxy and / or hydroxyl groups (dimethicone copolyols), linear polysiloxane(A)-polyoxyalkylene(B) block copolymers, grafted silicone polymers;cationic polymers such as quaternized cellulose ethers, polysiloxanes with quaternary groups, dimethyldiallylammonium chloride polymers, acrylamide-dimethyldiallylammonium chloride copolymers, diethyl sulfate-quaternized dimethylaminoethyl methacrylate-vinylpyrrolidinone copolymers, vinylpyrrolidinone-imidazolinium methochloride copolymers and quaternized polyvinyl alcohol; zwitterionic and amphoteric polymers; anionic polymers such as polyacrylic acids or cross-linked polyacrylic acids; structurants such as glucose, maleic acid and lactic acid, hair conditioning compounds such as phospholipids, for example lecithin and cephalins; perfume oils, dimethyl isosorbide and cyclodextrins; fiber structure-improving agents, in particular mono-, di- and oligosaccharides such as glucose, galactose, fructose, fructose and lactose; dyes for coloring the agent; Anti-dandruff agents such as piroctone olamine, zinc omadine, and climbazole; amino acids and oligopeptides;Protein hydrolysates of animal and / or plant origin, as well as in the form of their fatty acid condensation products or, where appropriate, anionically or cationically modified derivatives; fatty substances and vegetable oils; sunscreens and UV blockers; active ingredients such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidinonecarboxylic acids and their salts, and bisabolol; polyphenols, in particular hydroxycinnamic acids, 6,7-dihydroxycoumarins, hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones, and flavonols; ceramides or pseudoceramides; vitamins, provitamins, and vitamin precursors; plant extracts; fats and waxes such as fatty alcohols, beeswax, montan wax, and paraffins; Swelling and penetrating agents such as glycerin, propylene glycol monoethyl ether, carbonates, bicarbonates, guanidines, ureas, and primary, secondary, and tertiary phosphates; opacifiers such as latex, styrene / PVP, and styrene / acrylamide copolymers;Pearlescent agents such as ethylene glycol mono- and distearate and PEG-3 distearate as well as pigments.;

[0099] The skilled person will select these additional substances based on the desired properties of preparation (B) and the product according to the invention. Regarding further optional components and the amounts of these components used, reference is expressly made to the relevant manuals known to the skilled person. The additional active ingredients and excipients are preferably used in preparation (B) in amounts of 0.0001 to 25 wt.% each, in particular 0.0005 to 15 wt.%, each based on the total weight of preparation (B).

[0100] The following examples illustrate the present invention without, however, limiting it thereto: Examples:

[0101] A 100 nm thick layer of aluminum was vapor-deposited onto a 12 µm (micrometer) thick film layer of biaxially oriented polypropylene. The aluminum layer was then coated with approximately 3 g / m² of ORMOCER polymer and cured. A 70 µm (micrometer) thick layer of polyethylene was then applied to the ORMOCER layer. A packaging (VP) was produced from the film. The film is also coated with a 20 µm thick PET layer.

[0102] The following cosmetic compositions (CM) were used (all values in wt.%). Ingredients KM Potassium hydroxide (50%) 0,19 Sodium benzoate 0,04 Dipicolinic acid 0,10 Disodium pyrophosphate 0,10 1-Hydroxyethane-1,1-diphosphonic acid (60%) 0,25 Propanediol-1,2 1,0 Oxidizing agent 1)< 12 C 8 -C 30 -alcohol 2)< 3,40 Cationic surfactant 3)< 0,39 Non-ionic surfactant 4)< 1,0 Liquid cosmetic oil 5)< 0,3 Water to 100 1)< preferably hydrogen peroxide, calculated on 100% H 2 O 2 , 2)< preferably a mixture of linear C 14 -C 18 alcohols, in particular cetearyl alcohol, 3)< preferably an alkylammonium salt, in particular steartrimonium chloride, 4)< preferably an addition product of 40 mol of ethylene oxide with hydrogenated castor oil, in particular PEG-40 hydrogenated castor oil; or ceteareth-20, 2, 3, 4)< the ingredients can also be contained as a commercially available raw product (Emulgade ®< F) in the exemplary cosmetic composition (4.5 wt%). 5)< preferably paraffin oil Ingredients KM Potassium hydroxide (50%) 0,19 Sodium benzoate 0,04 Dipicolinic acid 0,10 Disodium pyrophosphate 0,10 1-Hydroxyethane-1,1-diphosphonic acid (60%) 0,25 Oxidizing agent 1)< 9,1 C 8 -C 30 -alcohol 2)< 3,40 Cationic surfactant 3)< 0,39 Non-ionic surfactant 4)< 1,0 Liquid cosmetic oil 5)< 0,3 Propanediol-1,2 1,0 Water to 100 1)< preferably hydrogen peroxide, calculated on 100% H 2 O 2 , 2)< preferably a mixture of linear C 14 -C 18 alcohols, in particular cetearyl alcohol, 3)< preferably an alkylammonium salt, in particular steartrimonium chloride, 4)< preferably an addition product of 40 mol of ethylene oxide with hydrogenated castor oil, in particular PEG-40 hydrogenated castor oil; or ceteareth-20, 5)< preferably paraffin oil

[0103] The cosmetic composition KM was filled into the previously described packaging (VP). The packaging was then stored for 24 weeks at 40 °C. The packaging did not swell or delaminate.

Claims

1. Cosmetic product for changing the natural colour of keratinous fibres, in particular human hair, comprising (i) at least one package (VP) comprising at least one multilayer film (F) containing at least one first polymer layer (P1), at least one second polymer layer (P2) and at least one barrier layer (BS), and (ii) at least one cosmetic composition (KM), which is packaged in the packaging (VP) and contains: a) at least one oxidising compound, b) at least one C8-C30alcohol, and c) at least one non-ionic surfactant, characterised in that the first polymer layer (P1) is formed from polyethylene terephthalate; the second polymer layer (P2) is formed from polyethylene; and the barrier layer (BS) is formed from metallised, oriented polypropylene.

2. Cosmetic product according to claim 1, characterised in that the first polymer layer (P1) has a layer thickness of from 4 µm to 50 µm, preferably from 5 µm to 35 µm, more preferably from 6 µm to 20 µm; the second polymer layer (P2) has a layer thickness of from 20 µm to 150 µm, preferably from 30 µm to 110 µm, more preferably from 40 µm to 90 µm; and / or the layer thickness of the barrier layer (BS) is from 4 µm to 20 µm, preferably from 5 µm to 18 µm, more preferably from 6 µm to 15 µm.

3. Cosmetic product according to claim 1 or claim 2, characterised in that the multilayer film (F) has an oxygen transmission rate (OTR) at 23 °C and 50 % relative humidity of 0.1 to 5 cc / m2 / d / bar, preferably of 0.2 to 3,5 cc / m2 / d / bar, more preferably from 0.5 to 2.5 cc / m2 / d / bar, and a water vapour permeability at 38 °C and 100 % relative humidity of from 0.1 to 5 g / m(2) d, preferably from 0.2 to 3.5 g / m(2) d, more preferably from 0.5 to 2.5 g / m(2) d.

4. Cosmetic product according to one of the preceding claims, characterised in that the adhesive strength of the film is 0.1 to 10 N / 15mm, preferably 1 to 8 N / 15mm, more preferably 1.5 to 5 N / 15mm; and / or characterised in that the seal seam strength of the packaging (VP) is 10 to 40 N / 15mm, preferably 15 to 35 N / 15mm, more preferably 20 to 30 N / 15mm, under the conditions 150 °C, 2.54 cm (1") and 4 kg / cm(2).

5. Cosmetic product according to one of the preceding claims, characterised in that the at least one multilayer film comprises the at least one barrier layer (BS) between the at least one first polymer layer (P1) and the at least one second polymer layer (P2).

6. Cosmetic product according to one of the preceding claims, characterised in that the first polymer layer (P1) forms the outer layer.

7. Cosmetic product according to one of the preceding claims, characterised in that the cosmetic composition (KM) has a pH value (measured at 20°C) of pH 1.5 to pH 5.0, preferably from pH 2.0 to pH 4.7, preferably from pH 2.3 to pH 4.4, in particular from pH 2.5 to pH 4.

8. Cosmetic product according to one of the preceding claims, characterised in that the cosmetic composition (KM) contains the at least one oxidising compound, in particular hydrogen peroxide, in a total amount of from 0.5 to 20% by weight, preferably from 1.0 to 18% by weight, preferably from 1.2 to 16% by weight, in particular from 1.5 to 15% by weight, based on the total weight of the cosmetic composition (KM).

9. Cosmetic product according to one of the preceding claims, characterised in that the cosmetic composition (KM) contains the at least one non-ionic surfactant, in particular the mixture of linear C16-C18alcohols substituted with an average of 20 ethoxy groups, in a total amount of 0.1 to 5 wt.%, preferably 0.12 to 4.5 wt.%, preferably 0.25 to 4 wt.%, in particular 0.5 to 3.5 wt.%, based on the total weight of the cosmetic composition (KM).% by weight, preferably from 0.12 to 4.5 % by weight, preferably from 0.25 to 4 % by weight, in particular from 0.5 to 3.5 % by weight, based on the total weight of the cosmetic composition (KM).

10. Cosmetic product according to one of the preceding claims, characterised in that the C8-C30alcohol is a mixture of linear C16-C18alcohols, which are present in a total amount of 0.1 to 10 wt.% by weight, preferably from 0.50 to 6.5 % by weight, preferably from 1.0 to 6.0 % by weight, in particular from 1.5 to 5.0 % by weight, based on the total weight of the cosmetic composition (KM), in the cosmetic composition (KM).