COSMETIC PRODUCT COMPRISING A FLEXIBLE CONTAINER AND AQUEOUS OXIDIZING COMPOSITION CONTAINED THEREIN - Patent application

Abstract

The present invention relates to a cosmetic product comprising a flexible container and an aqueous oxidizing composition A, having a pH in the range of 1 to 6, contained in the flexible container, the composition comprising a) one or more oxidizing agents, preferably hydrogen peroxide, and b) one or more xanthine compounds.

Description

[Technical field]

[0001] The present invention relates to a cosmetic product comprising a flexible container and an aqueous oxidizing composition contained in the flexible container, the aqueous oxidizing composition having a pH in the range of 1 to 6, the composition comprising a) one or more oxidizing agents, preferably hydrogen peroxide, and b) one or more xanthine compounds. [Background technology]

[0002] A crucial factor in combating climate change is reducing fossil fuel consumption and thus greenhouse gas emissions. The consumer goods industry is therefore implementing strategies to improve the sustainability of its products, providing solutions to reduce its own carbon footprint and that of its customers.

[0003] One measure is to reduce the mass of packaging, which leads to a smaller total mass of the product. Less material consumption not only saves natural resources during production, but also reduces emissions in the logistics chain.

[0004] However, not all types of products are suitable for filling into reduced-mass or natural-material-based packaging: for highly chemically active products, a safety margin is required to prevent premature leakage and destruction caused by degradation of the plastic polymer.

[0005] In WO 2021 / 084083, WO 2021 / 084085 and EP 3815673, the applicants disclose aqueous oxidizing compositions comprising a xanthine compound. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2021 / 084083 Brochure [Patent Document 2] International Publication No. 2021 / 084085 Brochure [Patent Document 3] European Patent Application Publication No. 3815673 Summary of the Invention [Problem to be solved by the invention]

[0007] However, there remains a practical need to develop products with reduced carbon footprints while still allowing for safe packaging. [Means for solving the problem]

[0008] A first object of the present invention is to provide a cosmetic product comprising a flexible container and an aqueous oxidizing composition A having a pH in the range of 1 to 6 contained in the flexible container, the composition being: a) one or more oxidizing agents, preferably hydrogen peroxide; b) the structure:

[0009] [ka] wherein R1, R2, and R3 are independently selected from H and CH3, and / or mixtures thereof.

[0010] A second object of the present invention is a method for making a cosmetic product having a flexible container filled with an aqueous oxidizing composition A, comprising the steps of: (i) forming a closed flexible container as defined above from a film material and fixing a dispensing means to or between the walls of the flexible container; (ii) filling a flexible container with aqueous oxidizing composition A as defined above by injecting the liquid composition into the flexible container through a dispensing means; (iii) sealing the flexible container by sealing the dispensing means, preferably with a removable lid; The method includes:

[0011] A third object of the present invention is to provide a cosmetic product as defined above, - an aqueous composition B having a pH in the range of 7 to 12 and comprising one or more oxidation dye precursors and / or oxidation dye couplers, a bleaching powder composition C comprising one or more persalts and / or peroxy salts and one or more alkalizing agents, - an aqueous lightening composition D, which comprises one or more alkalizing agents and has a pH in the range of 7 to 12; - an aqueous composition E having a pH in the range of 3 to 12, comprising one or more reducing agents and one or more alkalizing agents; and one or more compositions selected from the following: [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a side view of a flat-bottomed flexible container containing aqueous oxidizing composition A. [Diagram 2] FIG. 2 is a side view of a flexible container having a fastening means at the bottom and containing aqueous oxidizing composition A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The present inventors have unexpectedly found that xanthine maintains the stability of flexible containers filled with aqueous oxidizing composition A comprising hydrogen peroxide at room temperature and at elevated temperatures alike, thereby preventing premature breakage and leakage of the flexible container, maintaining the flexibility of the plastic material, and preventing the formation of discoloration on the plastic material.

[0014] flexible container The present invention relates to a cosmetic product comprising a flexible container (10, 20) and an aqueous oxidizing composition A having a pH in the range of 1 to 6 contained in the flexible container, the composition comprising: a) one or more oxidizing agents, preferably hydrogen peroxide; b) the structure:

[0015] [ka] The present invention relates to an article of manufacture comprising one or more compounds according to the formula: wherein R1, R2, and R3 are independently selected from H and CH3, and / or mixtures thereof.

[0016] From a flexibility standpoint, the flexible containers (10, 20) are preferably made of thin or deformable films classified by ASTM D6988. This standard method can also be used to determine the film or wall thickness of the flexible containers (10, 20).

[0017] From the perspective of plastic waste reduction, the flexible container (10, 20) is preferably a plastic pouch. Plastic pouches as a special form of flexible container (10, 20) have the lowest plastic consumption due to their low wall thickness. Therefore, plastic pouches are at a higher risk of leakage and breakage due to erosion of the plastic material. Premature leakage and breakage are prevented by the oxidizing composition claimed in this application, in particular by adding a compound according to group b) to the oxidizing composition.

[0018] From a handling standpoint, the flexible container (10, 20) has a bottom (11), a body (12), and a top, preferably the body (12) is made of one or more polymeric materials, preferably comprising low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or their recycled or bio-based counterparts, and / or mixtures thereof, and more preferably, the one or more polymeric materials comprises a mixture of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or recycled or bio-based polyethylene terephthalate (PET).

[0019] From the viewpoint of handling, it is further preferred that the flexible container (10) filled with liquid stands on its bottom (11), and preferably the bottom (11) is formed as a flat surface.

[0020] From the standpoint of container stability and container manufacturing, it is preferred that the flexible containers (10, 20) are made from one or more polymeric materials.

[0021] In one aspect of the invention, the flexible containers (10, 20) are preferably made of one or more polymeric materials including low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or their recycled or bio-based counterparts, and / or mixtures thereof.

[0022] Particularly preferred are one or more polymeric materials including blends of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or recycled or bio-based polyethylene terephthalate (PET).

[0023] In this embodiment, the body (12) of the flexible container (10, 20) preferably has a single layer wall comprising one or more of the polymeric materials defined above.

[0024] In another aspect of the invention, particularly when the flexible container (10, 20) is a pouch, the body (12) of the flexible container (10, 20) comprises one or more first inner layers of polymeric materials, one or more second outer layers of polymeric materials, and a barrier layer between the first inner layer and the second outer layer of polymeric materials, whereby the one or more first inner and second outer layers of polymeric materials may be the same or different materials, preferably, the one or more polymeric materials of the first inner and second outer layers comprise low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or their recycled or bio-based counterparts, and / or mixtures thereof, more preferably, the one or more polymeric materials comprise mixtures of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or recycled or bio-based polyethylene terephthalate (PET).

[0025] Premature failure and leakage of the first inner layer is prevented by the oxidizing composition of the invention, in particular by the addition of a compound according to group b), thus reducing the risk of the presence of plastic material of the inner layer in the composition, thereby improving user satisfaction and reducing the possibility of dissatisfaction with the product.

[0026] More preferably, the barrier layer of the flexible container (10, 20) is a SiOx or AlOx layer, which can be applied to reduce water evaporation during storage and improve peeling of the first and second layers during recycling of the packaging material.

[0027] From the standpoint of container stability, it is preferred that the average wall thickness of the flexible container (10, 20) is 30 μm or more, more preferably 50 μm or more, and even more preferably 75 μm or more.

[0028] In terms of container flexibility, it is preferred that the average wall thickness of the flexible container (10, 20) is 1500 μm or less, more preferably 800 μm or less, even more preferably 500 μm or less, and even more preferably 200 μm or less.

[0029] To achieve the above-mentioned effects, the average wall thickness of the flexible container (10, 20) is preferably in the range of 30 μm to 1500 μm, more preferably in the range of 30 μm to 800 μm, even more preferably in the range of 50 μm to 500 μm, and even more preferably in the range of 75 μm to 250 μm.

[0030] To measure the average wall thickness of the container, any suitable means can be used, for example optical methods based on the absorption of light, ultrasonic methods, microscopic measurements, magnetic measurements, preferably light microscopy and magnetic measurements.

[0031] A side view of a freestanding flexible container is shown in Figure 1. A side view of a flexible container having a fastening means is shown in Figure 2.

[0032] From a container manufacturing perspective, the liquid-filled flexible container (10, 20) preferably comprises a top (12, 22) extending from a bottom (11, 21) and one or more dispensing means (13, 23) located on the top (12, 22) of the flexible container (10, 20).

[0033] The tops (12, 22) of the flexible containers (10, 20) are made of a polymeric film that is glued, fused or heat sealed at its upper edge to an upright position to enclose the container air-tight and liquid-tight.

[0034] The dispensing means (13, 23) is preferably a valve that allows dispensing the appropriate amount of the aqueous oxidizing composition A contained in a flexible container. For example, the dispensing means (13, 23) is preferably a valve, which can optionally be closed with a removable lid. The removable lid can be screwed or plugged onto the dispensing means (13, 23).

[0035] From a product safety point of view, it is preferred that the dispensing means (13, 23) has an inner end and an outer end relative to the outside of the flexible container (10, 20), with the inner end of the dispensing means being within the flexible container and in contact with the aqueous oxidizing composition A when the container is tilted or inverted, and the outer end of the dispensing means extending outside the flexible container (10, 20) and secured by the wall of the flexible container (10, 20).

[0036] In one aspect of the invention, the flexible container 10 filled with liquid is freestanding on its bottom 11, which is preferably formed as a flat surface, which is particularly advantageous for easy storage of the flexible container 10.

[0037] In another aspect of the invention, a liquid-filled flexible container (20) is provided with a fastening means (24).

[0038] From the standpoint of easy liquid distribution, the fastening means (24) is preferably disposed at the bottom (22) of the liquid-filled flexible container (20) and is configured to fasten the container (20) bottom-up.

[0039] Particularly suitable are fastening means (24) such as one or more latches, one or more flaps, one or more through holes or one or more hooks. The advantage of these fastening means (24) is that the flexible container filled with liquid can be permanently placed bottom up and the dispensing means (23) can be positioned facing the user. This allows easy dispensing of liquid if the dispensing means (23) is equipped with an actuator configured to dispense liquid when needed by the user and to safely seal the dispensing means while not needed by the user.

[0040] From an environmental point of view, it is preferred that the flexible container is a reusable container. Within the meaning of the present invention, the term "reusable" refers to a container which, once empty, can be refilled with the aqueous oxidizing composition A.

[0041] Aqueous oxidizing composition A The flexible container of the present invention comprises an aqueous oxidizing composition A having a pH in the range of 1 to 6, the composition comprising: a) one or more oxidizing agents, preferably hydrogen peroxide; b) the structure:

[0042] [ka] wherein R1, R2, and R3 are independently selected from H and CH3, and / or mixtures thereof.

[0043] From the viewpoint of storage stability and safety of the composition, the pH of the composition is preferably 1.25 or higher, more preferably 1.5 or higher, and even more preferably 2 or higher.

[0044] From the viewpoint of storage stability of the composition, it is preferred that the pH of the composition is 5 or less, more preferably 4 or less, and even more preferably 3 or less.

[0045] In order to achieve the above-mentioned effects, the pH of the composition is preferably in the range of 1.25 to 5, more preferably in the range of 1.5 to 4, and even more preferably in the range of 2 to 3.

[0046] From the point of view of product performance, it is further preferred that the concentration of the compound according to a) is in the range of more than 1% by weight or more, more preferably 3% by weight or more, even more preferably 6% by weight or more, and still more preferably 9% by weight or more, calculated on the total weight of the composition.

[0047] From the viewpoint of product performance and user safety, it is further preferred that the concentration of the compound according to a) is not more than 20% by weight, more preferably not more than 15% by weight, even more preferably not more than 12% by weight, calculated on the total weight of the composition.

[0048] To achieve the above-mentioned effects, the concentration of the compound according to a) is preferably in the range of more than 1% by weight to 20% by weight, more preferably 3% by weight to 15% by weight, even more preferably 6% by weight to 12% by weight, and still more preferably 9% by weight to 12% by weight, calculated relative to the total weight of the composition.

[0049] Suitable xanthines and / or xanthine derivatives according to the structure of compound b) are - xanthines with R1=R2=R3=H, theobromine with R1=R3=CH3 and R2=H, theophylline, with R2=R3=CH3 and R1=H, and - Caffeine with R1=R2=R3=CH3 It is.

[0050] Mixtures of the above are also suitable.

[0051] From an economic point of view, it is preferred that at least one of the compounds according to b) is caffeine.

[0052] From the viewpoint of stabilization performance, it is further preferred that the total concentration of the compounds according to b) is 0.001% by weight or more, more preferably 0.01% by weight or more, even more preferably 0.02% by weight or more, and even more preferably 0.03% by weight or more, calculated relative to the total weight of the composition.

[0053] For economic reasons and from the standpoint of stabilizing performance, it is further preferred that the total concentration of the compounds according to b) is equal to or less than 0.5% by weight, more preferably equal to or less than 0.25% by weight, even more preferably equal to or less than 0.1% by weight, and even more preferably equal to or less than 0.08% by weight, calculated on the total weight of the composition.

[0054] To achieve the above-mentioned effects, the total concentration of the compounds according to b) is preferably in the range of 0.001% by mass to 0.5% by mass, preferably in the range of 0.01% by mass to 0.25% by mass, more preferably in the range of 0.02% by mass to 0.1% by mass, and even more preferably in the range of 0.03% by mass to 0.08% by mass, calculated relative to the total mass of the composition.

[0055] From the viewpoint of stabilizing performance, it is preferred that the mass ratio of compound a) to compound b) is 2 or more, more preferably 20 or more, even more preferably 37.5 or more, and even more preferably 100 or more.

[0056] From the viewpoint of stabilization performance, it is preferred that the mass ratio of compound a) to compound b) is 1,000 or less, more preferably 600 or less, even more preferably 400 or less, and even more preferably 150 or less.

[0057] To achieve the above-mentioned effects, the mass ratio of compound a) to compound b) is preferably in the range of 2 to 1,000, more preferably in the range of 20 to 600, even more preferably in the range of 37.5 to 400, and even more preferably in the range of 100 to 150.

[0058] Form of aqueous oxidizing composition A From the standpoint of cosmetic safety and ease of use for users, the composition of the present invention is preferably an emulsion, a thick gel, or a combination thereof.

[0059] Lipophilic compounds as compounds according to c) When the composition according to the invention is formulated as an emulsion and / or concentrated emulsion, it is preferred that the composition comprises one or more lipophilic compounds as compounds according to c).

[0060] From the viewpoint of cosmetic compatibility, preferably the compound according to c) is 12 ~C 22 Fatty alcohols, C3-C 22 Alcohol and C 12 ~C 22 Esters with fatty acids, C8~C 22 They are selected from fatty acids, vegetable oils, and / or silicones, and / or hydrocarbon-based products, and / or mixtures thereof.

[0061] Preferred C 12 ~C 22 The fatty alcohols are myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and cetearyl alcohol.

[0062] Suitable C3~C 22 Alcohol and C 12 ~C 22 The esters with fatty acids are isopropyl myristate, isopropyl palmitate, and myristyl myristate.

[0063] Suitable for C8~C 22 The fatty acids are oleic acid, linoleic acid, and palmitic acid.

[0064] Suitable vegetable oils are olive oil, almond oil, sunflower oil, and argan oil.

[0065] Suitable silicones are non-aminated and / or aminated silicones, the latter commonly known as amodimethicones.

[0066] From the viewpoint of forming a stable composition and from the viewpoint of user friendliness, it is preferred that the total concentration of the compounds according to c) is equal to or greater than 1% by weight, more preferably equal to or greater than 2% by weight, even more preferably equal to or greater than 3% by weight, calculated on the total weight of the composition.

[0067] With a view to forming a stable composition, it is preferred that the total concentration of the compounds according to c) is equal to or less than 20% by weight, more preferably equal to or less than 15% by weight, even more preferably equal to or less than 12% by weight, calculated relative to the total weight of the composition.

[0068] To achieve the above-mentioned effects, the total concentration of the compounds according to c) is in the range of 1% by weight to 20% by weight, preferably in the range of 2% by weight to 15% by weight, more preferably in the range of 3% by weight to 12% by weight, calculated relative to the total weight of the composition.

[0069] d) Surfactants as compounds according to From the standpoint of stabilizing the composition and improving wetting and mixing properties, the composition of the invention may further comprise one or more surfactants as compounds according to d), preferably selected from nonionic surfactants, anionic surfactants, cationic surfactants and / or amphoteric / zwitterionic surfactants, and / or mixtures thereof, more preferably selected from anionic surfactants.

[0070] Preferably, the anionic surfactant may be selected from ethoxylated or non-ethoxylated alkyl ether sulfate surfactants, alkyl sulfates, ethoxylated and / or non-ethoxylated alkyl carboxylates, ethoxylated or non-ethoxylated amino acid surfactants, and / or mixtures thereof, and / or salts thereof.

[0071] A suitable example is an alkyl group having an alkyl chain length of C 10 ~C22 and having a degree of ethoxylation of 1 to 50, or preferably an ethoxylated alkyl ether sulfate surfactant, or mixtures thereof, and / or salts thereof.

[0072] Suitable nonionic surfactants may be selected from alkyl polyglycosides, ethoxylated triglycerides, ethoxylated fatty alcohols, ethoxylated fatty acid esters, ethoxylated alkyl ethers, and / or mixtures thereof.

[0073] Suitable cationic surfactants are those with a carbon chain length of C 12 ~C 22 or tertiary amine groups and carbon chain lengths in the range of C 12 ~C 22 and at least one alkyl chain in the range, for example alkylamidoalkylamine surfactants, and / or salts thereof. Suitable examples are cetrimonium chloride and behentrimonium chloride.

[0074] Suitable amphoteric / zwitterionic surfactants are of the betaine type. Suitable compounds may be selected from alkyl betaines and / or alkyl amido betaines. A preferred compound selected from alkyl betaines is lauryl betaine. A preferred compound selected from alkyl amido betaines is cocamidopropyl betaine. The present disclosure also relates to salts of the compounds.

[0075] From the viewpoint of improving the wettability of keratin fibers, physical stability, and mixability with other compositions, the preferred concentration range of the surfactant is in the range of 0.1% by mass to 10% by mass, calculated based on the total mass of the composition.

[0076] Thickening Polymer From the viewpoint of cosmetic safety, it is further preferred that the composition according to the invention comprises one or more thickening polymers.

[0077] The compositions of the present invention comprise one or more thickening polymers selected from nonionic and / or anionic thickening polymers, and / or mixtures thereof.

[0078] Preferably, the thickening polymer is selected from polymers which, in water at 25°C, at a polymer concentration of 1% by weight, calculated on the total weight of the composition, result in an aqueous solution and / or dispersion having a pH of 1 to 6 with a viscosity of at least 1,000 mPa·s, as measured in a Brookfield viscometer, e.g. with a suitable spindle, at 25°C and 10 rpm for 1 minute.

[0079] Suitable nonionic thickening polymers are cellulose-based polymers. Suitable examples of cellulose-based polymers are methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethyl-methylcellulose, and alkylated hydroxylcelluloses, such as (C2-C8)-alkylcelluloses or cetyl hydroxyethylcellulose.

[0080] Suitable anionic thickening polymers are selected from naturally occurring anionic polymers and / or synthetic anionic polymers.

[0081] Preferably, the natural anionic polymers may be selected from xanthan gum, dehydroxanthan gum, hydroxypropyl xanthan gum, carboxymethylcellulose, and starch-based polymers such as vegetable starches and / or their synthetically modified derivatives, such as hydroxypropyl starch phosphate. Also suitable are alginic acid, sodium alginate, ammonium alginate, calcium alginate, gum arabic, and guar gum.

[0082] Suitable synthetic anionic polymers are associative thickening polymers, such as acrylates / steareth-30 methacrylate copolymers.

[0083] From the viewpoints of biodegradability and low environmental impact, the preferred thickening polymer for the composition of the present invention is a natural anionic polymer, more preferably xanthan gum and / or dehydroxanthan gum.

[0084] From the viewpoint of providing sufficient viscosity to the composition, the total concentration of the thickening polymers of the present invention is preferably at least 0.1% by weight, more preferably at least 0.25% by weight, more preferably at least 0.5% by weight, calculated relative to the total weight of the composition.

[0085] From the viewpoint of providing sufficient viscosity to the composition and from the viewpoint of cost of goods, preferably the total concentration of the thickening polymers of the present invention is equal to or less than 15% by weight, more preferably equal to or more than 12% by weight, even more preferably equal to or less than 10% by weight, calculated relative to the total weight of the composition.

[0086] In order to achieve the above-mentioned effects, the total concentration of the thickening polymer in the composition of the present invention, calculated relative to the total mass of the composition, is preferably in the range of 0.1 mass% to 15 mass%, preferably in the range of 0.25 mass% to 12 mass%, and more preferably in the range of 0.5 mass% to 10 mass%.

[0087] From the viewpoint of cosmetic safety, it is preferred that the composition of the present invention has a viscosity in the range of 1,000 Pas to 25,000 mPas, preferably 2,000 mPas to 20,000 mPas, more preferably 2,500 mPas to 17,500 mPas, determined by a cone and plate viscometer under atmospheric conditions at 25° C. A suitable viscometer is a Brookfield viscometer equipped with spindle #4.

[0088] Method for making a flexible container The present invention relates to a method for making a cosmetic product having a flexible container (10, 20) filled with an aqueous oxidizing composition A, comprising the steps of: (i) forming a closed flexible container as defined above from a film material and fixing a dispensing means (13, 23) to or between the walls of the flexible container; (ii) filling a flexible container with aqueous oxidizing composition A as defined above by injecting the liquid composition into the flexible container through a dispensing means (13, 23); (iii) sealing the flexible container by sealing the dispensing means (13, 23), preferably with a removable lid; The present invention also covers a method including the steps of:

[0089] The sealing step iii) is preferably a heat sealing or ultrasonic sealing step.

[0090] Kit of parts The present invention relates to a cosmetic product as defined above, - an aqueous composition B having a pH in the range of 7 to 12 and comprising one or more oxidation dye precursors and / or oxidation dye couplers, a bleaching powder composition C comprising one or more persalts and / or peroxy salts and one or more alkalizing agents, - an aqueous lightening composition D, which comprises one or more alkalizing agents and has a pH in the range of 7 to 12; - an aqueous composition E having a pH in the range of 3 to 12, comprising one or more reducing agents and one or more alkalizing agents; and one or more compositions selected from the group consisting of:

[0091] From the standpoint of customer convenience, it is preferred that the aforementioned compositions are packaged separately.

[0092] The following examples are intended to illustrate, but not limit, the present invention. EXAMPLES

[0093] Table 1 The following composition was prepared by dissolving caffeine as a compound according to b) in an aqueous composition of hydrogen peroxide under constant stirring.

[0094] [Table 1]

[0095] The compositions were prepared and stored for 2 months under controlled conditions at 50° C. 5 g pieces of the following plastic materials were immersed in 500 mL of the above oxidizing composition: 1: PP / Adflex: Polypropylene (80% w / w, PP Borealis RB 307 MO) and Adflex Q 300F (20% w / w), thickness 770 μm 2: HDPE / LDPE: LyondellBasell Hostalen ACP 5231 D (75% w / w) and Dow Chemical Dowlex 2045 G (25% w / w), thickness 960 μm 3: PET: Indorama Ramapet N1(S), thickness 570μm 4: Recycled polyethylene terephthalate (PET), thickness 250 μm

[0096] [Table 2] Roughness: 0 (very rough) to 5 (very smooth) Flexibility: 0 (no flexibility, material breaks) to 5 (complete flexibility) *: Strong deformation of the material, yellow stains

[0097] method In the examples in Table 1, five independent experts touched the plastic materials without knowing the material or the treatment group. They were asked to evaluate the roughness and flexibility of the materials and assign a score. Roughness was rated on a scale of 0 (very rough) to 5 (very smooth), and flexibility was rated on a scale of 0 (no flexibility, material breaks) to 5 (complete flexibility).

[0098] The values ​​reported are the modes of classification by experts.

[0099] In the example of Table 2, the evaluation was done by qualitative assessment of preserved plastic samples.

[0100] The following additional plastic materials were tested: 5: 100% LDPE, thickness 1.2mm 6: 100% HDPE, thickness 0.92mm

[0101] [Table 3]

Claims

1. A cosmetic product comprising a flexible container (10, 20) and an aqueous oxidizing composition A contained in said flexible container and having a pH in the range of 1 to 6, said composition comprising: a) one or more oxidizing agents, preferably hydrogen peroxide; b) a molecule having the following structure: 【Chemistry 1】 [In the formula, R １ , R ２ , and R ３ is H and CH ３ and / or mixtures thereof,

2. 2. The product according to claim 1, characterized in that said flexible container (10, 20) is a plastic pouch.

3. 3. The product according to any one of claims 1 and / or 2, characterized in that the flexible container (10, 20) has a bottom (11), a body (12) and a top, preferably the body (12) being made of one or more polymeric materials, preferably comprising low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET) and / or their recycled or bio-based counterparts and / or mixtures thereof, more preferably comprising a mixture of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET) and / or recycled or bio-based polyethylene terephthalate (PET).

4. 4. A product according to any one of claims 1 to 3, characterized in that the flexible container (10) filled with liquid is free-standing on a bottom (11), preferably the bottom (11) being formed as a flat surface.

5. 5. Product according to any one of claims 1 and / or 3 to 4, characterized in that the flexible container (10, 20) is made of one or more polymeric materials, preferably comprising low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET) and / or their recycled or bio-based counterparts and / or mixtures thereof, more preferably comprising a mixture of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET) and / or recycled or bio-based polyethylene terephthalate (PET).

6. 5. The product according to any one of claims 1 to 4, characterized in that the body (12) of the flexible container (10, 20) comprises a first inner layer of one or more polymeric materials, a second outer layer of one or more polymeric materials, and a barrier layer between the first inner layer and the second outer layer of the one or more polymeric materials, wherein the first inner layer and the second outer layer of the one or more polymeric materials may be the same or different materials, preferably, the polymeric materials of the first inner layer and the second outer layer comprise low density polyethylene (LDPE), high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or their recycled or bio-based counterparts, and / or mixtures thereof, more preferably, the one or more polymeric materials comprise mixtures of low density polyethylene (LDPE) and high density polyethylene (HDPE), polyethylene terephthalate (PET), and / or recycled or bio-based polyethylene terephthalate (PET).

7. 7. The article of claim 6, wherein the barrier layer is a SiOx layer or an AlOx layer.

8. 8. Product according to any one of claims 1 to 7, characterized in that the average wall thickness of the flexible container (10, 20), preferably the average wall thickness of the body (12) of the flexible container, is in the range of 30 μm to 1500 μm, preferably in the range of 30 μm to 800 μm, more preferably in the range of 50 μm to 500 μm, even more preferably in the range of 75 μm to 250 μm.

9. 9. A product according to any one of claims 1 to 8, characterized in that the flexible container (10, 20) filled with liquid is provided with one or more dispensing means (13, 23) located at the top of the flexible container (10, 20).

10. 10. The product according to any one of claims 1 to 9, characterized in that the flexible container (20) filled with liquid comprises a fastening means (24), preferably arranged on a bottom (22) of the flexible container (20) filled with liquid and configured to fasten the container (20) bottom-up, more preferably the fastening means (24) configured to fasten the container (20) bottom-up is one or more latches, one or more flaps, one or more through holes or one or more hooks.

11. 11. The product of any one of claims 1 to 10, characterized in that the flexible container is a reusable container.

12. 12. The product according to any one of claims 1 to 11, characterized in that the dispensing means (13, 23) has an inner end and an outer end relative to the outside of the flexible container (10, 20), the inner end of the dispensing means being within the flexible container and in contact with the aqueous oxidizing composition A when the container is tilted or inverted, and the outer end of the dispensing means being fixed by the wall of the flexible container (10, 20) such that it extends outside the flexible container (10, 20).

13. 13. A product according to any one of claims 9 and / or 12, characterised in that the dispensing means (13, 23) comprises an actuator arranged to open the dispensing means (13, 23) for dispensing the aqueous oxidizing composition A on demand of a user.

14. 14. Product according to any one of claims 1 to 13, characterized in that the concentration of compounds according to group a) in the oxidizing composition A is in the range from 1% to 20% by weight, preferably in the range from 3% to 15% by weight, more preferably in the range from 6% to 12% by weight and even more preferably in the range from 9% to 12% by weight, calculated relative to the total weight of the composition.

15. 15. A product according to any one of claims 1 to 14, characterized in that at least one of the compounds according to group b) of the oxidizing composition A is caffeine.

16. 16. Product according to any one of the preceding claims, characterized in that the total concentration of compounds according to group b) in the oxidizing composition A is in the range of 0.001% to 0.5% by weight, preferably in the range of 0.01% to 0.25% by weight, more preferably in the range of 0.02% to 0.1% by weight and even more preferably in the range of 0.03% to 0.08% by weight, calculated relative to the total weight of the composition.

17. The oxidizing composition A comprises one or more lipophilic compounds as compounds according to c), preferably the one or more compounds according to group c) are selected from the group １２ ~C ２２ Fatty alcohols, C ３ ~C ２２ Alcohol and C １２ ~C ２２ Esters with fatty acids, C ８ ~C ２２ 17. Product according to any one of claims 1 to 16, characterized in that it is selected from fatty acids, vegetable oils and / or silicone and / or hydrocarbon-based products, and / or mixtures thereof.

18. 18. Product according to any one of the preceding claims, characterized in that the concentration of compounds according to group c) of the oxidizing composition A is in the range from 1% to 20% by weight, preferably in the range from 2% to 15% by weight and more preferably in the range from 3% to 12% by weight, calculated relative to the total weight of composition A.

19. A method for making a cosmetic product having a flexible container (10, 20) filled with an aqueous oxidizing composition A, comprising the steps of: (i) forming a sealed flexible container according to any one of claims 1 to 18 from a film material and fixing a dispensing means (13, 23) to or between the walls of said flexible container; (ii) filling said flexible container with an aqueous oxidizing composition A according to any one of claims 1 to 18 by injecting the liquid composition into said flexible container through said dispensing means (13, 23); (iii) sealing the flexible container by sealing the dispensing means (13, 23), preferably with a removable lid; The method includes:

20. A cosmetic product according to any one of claims 1 to 18; an aqueous composition B having a pH in the range of from 7 to 12 and comprising one or more oxidative dye precursors and / or oxidative dye couplers, a bleaching powder composition C comprising one or more persalts and / or peroxy salts and one or more alkalizing agents, - an aqueous lightening composition D comprising one or more alkalizing agents and having a pH ranging from 7 to 12; - aqueous composition E having a pH in the range of 3 to 12, comprising one or more reducing agents and one or more alkalizing agents; and one or more compositions selected from the group consisting of:

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