Thickening agent for optimising the application properties of an oxidative hair lightening agent

Abstract

The present invention relates to a pourable hair treatment agent and to the use thereof for optimising the application properties of oxidative hair lightening agents, in particular bleaching powders and bleaching pastes, and to multi-component kits and methods for the lightening or the lightening dyeing of keratin fibres, in particular human hair, using the pourable hair treatment agent according to the invention.

Description

[0001] August 29, 2024

[0002] 2024P00158 WO

[0003] “Thickening agent to optimize the application properties of an oxidative hair lightening agent”

[0004] The present invention relates to a free-flowing hair treatment agent and its use for optimizing the application properties of oxidative hair lightening agents, in particular bleaching powders and bleaching pastes, as well as multi-component kits and methods for lightening or lightening the color of keratinous fibers, in particular human hair, using the free-flowing hair treatment agent according to the invention.

[0005] Lightening one's hair color has always been a desire for many consumers, as blonde hair is considered attractive and fashionable. Various bleaching agents with different levels of strength are available on the market for this purpose. The oxidizing agents contained in these products lighten the hair fiber by oxidatively destroying the hair's natural pigment, melanin. For a moderate bleaching effect, hydrogen peroxide—possibly with the addition of ammonia or other alkalizing agents—is sufficient as the oxidizing agent alone. To achieve a stronger bleaching effect, a mixture of hydrogen peroxide and at least one compound selected from persalts, particularly peroxodisulfate salts and / or peroxomonosulfate salts, is typically used.To enhance the bleaching effect, these products contain higher concentrations of hydrogen peroxide and persalts, especially persulfates. Dark, dark brown, or black hair can thus be lightened by 4 to 6 shades in one step.

[0006] Currently, "balayage," a method of selectively bleaching hair, is very trendy. With this technique, not all of the hair or large sections are bleached, but rather individual strands are exposed to the lightening agent and thus bleached. Unlike traditional highlighting methods, where the strands treated with the bleach are separated from the surrounding hair (which should not be bleached) by mechanical separators such as foils or a highlighting cap during the processing time, "balayage" requires no such mechanical separators. This saves time and materials, because after the strands are treated with the bleach, they don't need to be laboriously wrapped and then unwrapped after the processing time. The time-consuming process of pulling individual strands through the holes of a highlighting cap is also eliminated.To achieve a good balayage effect, it is essential to ensure that the ready-to-use bleaching mixture can be applied precisely. It is also important that the mixture does not wet the adjacent, untreated strands of hair, otherwise a defined color result with clearly distinguishable blonde highlights will not be achieved.

[0007] Conventional bleaching agents are designed as two-component products, consisting of an anhydrous component containing one or more persulfates as bleaching agents and significant amounts of alkalizing agents, and an aqueous hydrogen peroxide solution with approximately 2 to 12% hydrogen peroxide by weight. To activate the oxidizing agents, both components are mixed together immediately before application to the hair. The anhydrous persulfate component can be in powder, paste, granules, or tablet form and is typically formulated so that its application mixture with the hydrogen peroxide solution has a relatively low viscosity, allowing for easy and quick distribution over large areas of hair. However, this viscosity is too low for partial bleaching, such as balayage, and therefore less suitable.

[0008] Cosmetic products for the mass market are inexpensive when they can be produced in large quantities. In contrast, products for a specific application, such as the "balayage" technique in this case, tend to be more expensive to manufacture.

[0009] The present invention was therefore based on the objective of providing cost-effectively manufactured oxidative hair lightening agents whose application properties are optimized for the specific requirements of the “balayage” process, i.e., highlighting without the use of mechanical separating agents.

[0010] A further requirement for the oxidative hair lightening kit and process according to the invention was to damage the hair as little as possible despite the harsh chemical conditions prevailing during oxidative lightening, without impairing the quality of the lightening. The active ingredients used for this purpose should be as environmentally friendly as possible, obtained from sustainable raw material sources and / or, if applicable, biodegradable.

[0011] A further object of the present invention was to find oxidative hair lightening kits and hair lightening processes that are superior to prior art bleaching agents or lightening agents in terms of their bleaching performance. Furthermore, the bleaching agents should possess sufficiently high stability and not heat up excessively, even when applied to hair, particularly hair with a higher metal or heavy metal content. It was also an object of the present invention to provide oxidative hair lightening agents, in particular bleaching agents or agents for oxidative color change, that are optimally suited for application at the hair roots, i.e., near the scalp. The bleaching agent must be strong enough to effectively lighten undamaged, stable, and therefore particularly difficult-to-lighten root hair.On the other hand, the potential for skin irritation from the ready-to-use bleaching agent must be kept as low as possible, since when applying the product to the roots, at least small amounts of it will inevitably come into contact with the scalp. Therefore, the ready-to-use agent should develop a creamy, compact consistency and form a crust after application to the hair.

[0012] The tasks are solved by a free-flowing, anhydrous, and oxidant-free hair treatment product, which, in addition to a maximum of 7.0 wt% of additives and 0.1–5.0 wt% of a polysaccharide, consists essentially of one or more solid alkalizing agents and kaolin. Surprisingly, it was found that the use of such an additive in the production of a ready-to-use lightening agent for keratin fibers from a commercially available bleaching powder or paste and a hydrogen peroxide solution optimizes the application properties of the ready-to-use lightening agent for the specific requirements of the "balayage" technique.

[0013] By combining kaolin with the alkalizing agent, in particular with basic magnesium carbonate, also known as magnesium hydroxide carbonate, the application mixture obtained according to the invention becomes significantly more viscous than the standard lightening mixture and forms a kind of crust on the hair. This means that the outer layer of the application mixture dries on the hair, while the inner layer remains moist, thus optimally lightening the hair. The crust that forms ensures that no surrounding strands of hair are wetted and also lightened.

[0014] The additive according to the invention makes it possible to easily and individually adjust the conversion of cost-effectively produced bleaching agent platform formulations into a special product with optimized properties.

[0015] With a lower dosage of the additive, only the viscosity can be adjusted without the application mixture forming a crust. A crust-free thickening of the application mixture can be particularly advantageous for more precise application at the hairline.

[0016] Furthermore, it was surprisingly found that the subsequent addition of the kaolin / alkali additive achieves a significantly higher level of lightening than that achieved by directly combining kaolin, alkalizing agent, and persulfate. With a bleaching powder containing kaolin, alkalizing agent, and persulfate, only 7 levels of lift were achieved, whereas with the embodiment according to the invention, 9 levels of lift were achieved.

[0017] A first object of the present invention is a free-flowing hair treatment composition (V), comprising, in each case based on its weight,

[0018] - at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, in a total amount of 6.9–85 wt.%, preferably 10–80 wt.%, particularly preferably 15–75 wt.%, further particularly preferably 20–70 wt.%, extremely preferably 30–65 wt.%, further

[0019] - 10 - 93 wt.%, preferably 15 - 80 wt.%, particularly preferably 20 - 60 wt.%, further particularly preferably 23 - 50 wt.%, extremely preferably 25 - 35 wt.% kaolin, further

[0020] - at least one polysaccharide in a total amount of 0.1 - 5.0 wt.%, preferably 0.5 - 3.0 wt.%, particularly preferably 0.8 - 2.0 wt.%, extremely preferably 1.0 - 1.5 wt.%, furthermore

[0021] - 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% free water,

[0022] - other ingredients in a total quantity of 0 to a maximum of 7.0% by weight,

[0023] - the hair treatment product does not contain an oxidizing agent.

[0024] A second object of the present invention is a multi-component packaging unit (kit-of-parts) for lightening keratinous fibers, comprising at least three separately packaged components, of which i) the first component is a free-flowing hair treatment agent (V) as described above, ii) the second component (B) is an oxidative hair lightening agent comprising a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, each based on the weight of the oxidative hair lightening agent, and iii) the third component (Ox) is an oxidation composition comprising, each based on its weight, 50-96 Weight.-%, preferably 70-93 wt.%, particularly preferably 80-90 wt.%, water and 0.5-20 wt.% hydrogen peroxide and furthermore contains at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably present in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40) to each other.

[0025] A third object of the present invention is a method for lightening or lightening keratinous fibers, in particular human hair, in which a free-flowing hair treatment agent (V) as described above is mixed with an oxidative hair lightening agent (B) comprising a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, as well as mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and with an oxidation composition (Ox) which, in each case based on its weight, contains 50 to 96 wt.%, preferably 70 to 93 wt.%, particularly preferably 80 to 90 wt.% water. and 0.5 - 20 wt.-% hydrogen peroxide and further contains at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, this mixture is applied directly, preferably within 10 seconds to 15 minutes after its preparation, to the keratin-containing fibers and.

[0026] The solution is left on the fibers for 5 to 60 minutes, and the fibers are then rinsed with water and optionally washed with a surfactant-containing cleaning agent, wherein the components (V), (B) and (Ox) are preferably mixed together in a weight ratio (V) : (B) : (Ox) of (1-10) : (10 - 30) : (20 - 50), more preferably (3 - 7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

[0027] A fourth object of the present invention is an aqueous, ready-to-use composition for the oxidative lightening or lightening of keratin fibers, in particular hair, comprising three components which are mixed together before application to the keratin fibers, comprising i) a free-flowing hair treatment agent (V) as described above, ii) an oxidative hair lightening agent (B) comprising a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and iii) an oxidation composition (Ox) comprising, in each case based on its weight, 50 - 96 kg-%, preferably 70-93 wt%, particularly preferably 80-90 wt%, water and 0.5-20 wt% hydrogen peroxide, and furthermore contains at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably contained in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

[0028] A fifth object of the present invention is the use of a free-flowing hair treatment agent (V), as described above, for thickening an aqueous ready-to-use composition for the oxidative lightening or lightening of keratin fibers, in particular hair, comprising i) an oxidative hair lightening agent (B) containing a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and ii) an oxidation composition (Ox) comprising, in each case based on its weight, 50 to 96 wt.%, preferably 70 to 93 wt.%, particularly preferably 80 - 90 wt.%, water and 0.5 - 20 wt.containing -% hydrogen peroxide and further containing at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably contained in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

[0029] According to the invention, keratin-containing or keratinous fibers are understood to mean, in particular, human hair, but also fur, wool, and feathers. Similarly, the terms "hair treatment agent" and "hair treatment method" are to be understood, according to the invention, as referring to keratinous fibers in general, i.e., according to the invention, specifically human hair, but also fur, wool, and feathers.

[0030] The hydrogen peroxide-containing oxidation composition (Ox) and the persalt-containing oxidative hair lightening agent (B) are stored separately until use to prevent premature deactivation of the persalts. The oxidation composition (Ox), which comprises an aqueous solution of hydrogen peroxide, has an acidic pH to stabilize the hydrogen peroxide, specifically a pH of 1.5 to 5.5, and particularly 3 to 5, measured at 20°C.

[0031] However, for the melanin-degrading effect of the hydrogen peroxide and the bleaching effect on the keratinous fiber, it is advantageous if the application mixture according to the invention has an alkaline pH value in the range of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 - 10.5, and most preferably 9.5 - 10.0, each measured at 20°C.

[0032] To adjust the alkaline pH of the lightening application mixture, the oxidative hair lightening agents (B) used according to the invention contain, in addition to at least one per salt, at least one alkalizing agent that is solid at 20 °C and 1013 mbar in such a total amount that the application mixture has the desired alkaline pH.In addition to the hair treatment agent (V) according to the invention, the oxidative hair lightening agent (B) used according to the invention, and the hydrogen peroxide-containing oxidation composition (Ox) used according to the invention, a fourth composition (Alk) can be added to the application mixture or kit according to the invention, which contains, besides water, one or more alkalizing agents in such an amount that the application mixture has an alkaline pH value in the range of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 to 10.5, and most preferably 9.5 to 10.3, in each case measured at 20°C.

[0033] Adding oxidative dye precursors and / or direct dyes to an oxidative hair lightening agent allows the hair to be colored simultaneously. Such hair dyes are offered particularly for consumers with very dark, melanin-rich hair.

[0034] To prevent the pH of the application mixture according to the invention from being diluted into a less alkaline range by the addition of the hair treatment agent (V) according to the invention, the free-flowing hair treatment agent (V) also contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, in a total amount of 6.9–85 wt.%, based on the weight of the composition (V). Preferably, the total content of solid alkalizing agents is 10–80 wt.%, particularly preferably 15–75 wt.%, further preferably 20–70 wt.%, and most preferably 30–65 wt.%, in each case based on the weight of the composition (V).

[0035] According to the invention, a 1 wt% suspension of the hair treatment agent (V) preferably has a pH value in the range of 9 to 12, particularly preferably in the range of 9.5 to 11.5, more preferably from 10.0 to 11.4, and most preferably from 10.4 to 11.0, each measured at 20°C.

[0036] Preferred inorganic alkalizing agents for the hair treatment composition (V) according to the invention, which are solid at 20 °C and 1013 mbar, are selected from alkaline earth metal hydroxide carbonates, alkaline earth metal carbonates, alkaline earth metal hydroxides, sodium silicates, sodium metasilicates, wherein sodium silicates and sodium metasilicates with a molar SiO2 / Na2O ratio of > 2 are preferred, sodium silicates and sodium metasilicates with a molar SiO2 / Na2O ratio of 2.5-3.5 are particularly preferred, further selected from alkali metal hydroxides, (earth) alkali metal phosphates and (earth) alkali metal hydrogen phosphates as well as mixtures of these substances.For the hair treatment composition (V) according to the invention, particularly preferred inorganic alkalizing agents, which are solid at 20°C and 1013 mbar, are selected from alkaline earth metal hydroxide carbonates, alkaline earth metal carbonates, and alkaline earth metal hydroxides, as well as mixtures thereof, in particular selected from magnesium carbonate, magnesium hydroxide, and basic magnesium carbonates, which are also referred to as magnesium hydroxide carbonates. Particularly preferred magnesium hydroxide carbonates according to the invention are selected from those with the formula MgCOs ■ Mg(OH)₂ ■ 2 H₂O and those with the formula MgCOs ■ Mg(OH)₂. Magnesium hydroxide carbonate with the formula MgCOs ■ Mg(OH)₂ is particularly preferred according to the invention. Depending on the temperature chosen during the manufacturing process, so-called light basic magnesium carbonate or heavy basic magnesium carbonate is obtained. Heavy basic magnesium carbonate has a bulk density in the range of 350 - 450 g / l (grams per liter).Light basic magnesium carbonate has a bulk density in the range of 80–150 g / l. Light magnesium carbonate is precipitated at approximately 65°C, has smaller particles, and a lower bulk density. Heavy magnesium carbonate is precipitated at approximately 90°C and is more compact, therefore having a higher bulk density.

[0037] According to the invention, it may be particularly preferred to use a mixture of heavy basic magnesium carbonate and light basic magnesium carbonate in the brightening processes and in the aqueous ready-to-use composition according to the invention for the oxidative brightening or brightening dyeing of keratin fibers.

[0038] It was surprisingly discovered that the application properties of a conventional bleaching agent optimized for full-head application can be adapted to the specific requirements of the "balayage" technique by adding a hair treatment agent (V) as an additive to the application mixture. This additive contains, based on the weight of the additive (V), 10–93 wt.%, preferably 15–80 wt.%, particularly preferably 20–60 wt.%, further particularly preferably 23–50 wt.%, and most preferably 25–35 wt.%, kaolin. According to the invention, it is preferred that the kaolin used is purified and, in particular, of pharmaceutical grade. It is further preferred according to the invention that the kaolin used is calcined. It is further preferred according to the invention that the kaolin used is calcined and of pharmaceutical grade.

[0039] Furthermore, it was surprisingly discovered that the application properties of a conventional bleaching agent optimized for full-head application can be adapted to the specific requirements of the "balayage" technique by adding a hair treatment agent (V) as an additive to the application mixture. This additive contains, based on its weight (V), at least one polysaccharide in a total amount of 0.1–5.0 wt.%, preferably 0.5–3.0 wt.%, particularly preferably 0.8–2.0 wt.%, and most preferably 1.0–1.5 wt.%. While not bound by this theory, it is hypothesized that the polysaccharide content in the specified quantity ranges can further control the viscosity of the aqueous phase and optimize it in conjunction with the particulate phase of the additive (V) and the bleaching agent (B), comprising solid inorganic alkalizing agents and kaolin.

[0040] Preferred hair treatment compositions (V) according to the invention are characterized in that the at least one polysaccharide is selected from xanthan gum, cellulose, cellulose ethers of C1-C4 alcohols, cellulose esters, guar gum, alginic acids and their corresponding physiologically acceptable salts, alginates, agar-agar, agarose, karaya gum, locust bean gum, gum arabic, pectins, dextrans, and mixtures thereof. Particularly preferred hair treatment compositions (V) according to the invention are characterized in that the at least one polysaccharide is selected from xanthan gum, cellulose ethers of C1-C4 alcohols and cellulose esters, and mixtures thereof. Particularly preferred cellulose ethers of C1-C4 alcohols are selected from methylcellulose, ethylcellulose, hydroxyalkylcellulose, in particular hydroxyethylcellulose and methylhydroxyalkylcellulose, and mixtures thereof.Particularly preferred cellulose esters are selected from carboxymethyl celluloses, with sodium carboxymethyl cellulose, whose INCI name is Cellulose Gum, being particularly preferred. If the polysaccharides are or can be ionic, their physiologically acceptable salts are also preferably used. Preferably, mixtures of the aforementioned polysaccharides and their physiologically acceptable salts may be included.

[0041] Starches, starch fractions, and starch derivatives such as amylose, amylopectin, and dextrins can, in principle, also be included as polysaccharides. However, it has been found that starches, starch fractions, and starch derivatives exhibit less favorable effects within the scope of the present invention than other polysaccharides. Hair treatment compositions (V) preferred according to the invention are therefore characterized in that the at least one polysaccharide is not a starch, a starch fraction, or a starch derivative.

[0042] According to the invention, it has proven advantageous if the hair treatment product (V) is essentially anhydrous and is composed essentially of the at least one inorganic alkalizing agent and kaolin, and also contains 0.1–5.0 wt.% of polysaccharide(s), wherein further ingredients are present in a total amount of 0 to a maximum of 7.0 wt.%, based on the weight of the hair treatment product (V). These “further ingredients” are preferably selected from oils, complexing agents, sequestrants, in particular sodium hexametaphosphate, as well as hair conditioning agents and perfumes, and mixtures of these ingredients.

[0043] In a particularly preferred embodiment of the invention, the hair treatment agent (V) contains at least one oil in a total amount of 0.1 to 7 wt.%, preferably 0.2 to 5 wt.%, particularly preferably 0.5 to 4 wt.%, and most preferably 1.0 to 3.5 wt.%, in each case based on the weight of the hair treatment agent. It was surprisingly found that an oil content in the specified quantity ranges improves the application properties in balayage, in particular supporting the formation of a particularly smooth crust of the application mixture on the hair strands during the processing time. The oils preferred for use in the hair treatment agent (V) according to the invention are identical to those disclosed below as for dedusting powdered hair lightening agents (B) or as a carrier for paste-like hair lightening agents (B).

[0044] In a particularly preferred embodiment of the invention, the hair treatment agent (V) contains 0.1 to 2.0 wt.%, preferably 0.2 to 1.0 wt.%, particularly preferably 0.3 to 0.8 wt.%, and most preferably 0.4 to 0.6 wt.%, sodium hexametaphosphate, each based on the weight of the hair treatment agent. It was surprisingly found that an addition of sodium hexametaphosphate in the specified amounts advantageously regulates the heat generation in the application mixture at the beginning of the exposure time.

[0045] The free-flowing hair treatment agent (V) is preferably in the form of a powder or granules. It is a bulk material that can flow vertically. According to the invention, preferred hair treatment agents (V) are in the form of a powder and have a bulk density in the range of 150–450 grams / liter, preferably 200–300 g / liter. The bulk density is preferably determined according to EN ISO 60 (version 01 / 2000) or DIN ISO 697 (version 01 / 1984).

[0046] A second object of the present invention is a multi-component packaging unit (kit-of-parts) for lightening keratinous fibers, comprising at least three separately packaged components, of which i) the first component is a free-flowing hair treatment agent (V) as described above, ii) the second component (B) is an oxidative hair lightening agent comprising a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, as well as mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent.

[0047] The oxidative hair lightening agent (B) used according to the invention is a substantially anhydrous oxidizing agent preparation containing at least one inorganic salt of peroxosulfuric acid, which is hereinafter also referred to as persalt. The substantially anhydrous oxidative hair lightening agent (B) is preferably in powder form. However, it may also be preferred that the substantially anhydrous oxidative hair lightening agent (B) is in paste form, granular form, or in tablet form.

[0048] "Essentially anhydrous" means that the hair lightening agent (B), based on its weight, contains 0 to 10 wt.%, preferably 0.1 to 8 wt.%, and particularly preferably 0.5 to 5 wt.% water. This refers to the free water content. The content of molecularly bound water or water of crystallization that individual powder components may contain is not taken into account. The water content can be determined, for example, by Karl Fischer titration in accordance with ISO 4317 (version 2011-12).

[0049] Since chemical reactions occur when the oxidative hair lightening agent (B) is mixed with the aqueous hydrogen peroxide-containing composition, releasing gaseous oxygen, the ready-to-use bleaching agent swells more and more during the processing time on the hair. It changes from an initial cream consistency to a foamy, swollen consistency. Due to the coarse-pored foam texture, the ready-to-use bleaching agent of the state of the art does not adhere sufficiently to the hair fiber. This means that less ready-to-use bleaching agent, and therefore less bleaching agent, reaches the hair fiber. To minimize foam formation, it is recommended to keep the surfactant content in the bleaching agent as low as possible or to formulate the product without surfactants and emulsifiers.This can lead to a conflict of objectives, as ready-to-use bleaching agents are often formulated with a certain amount of oil and / or fat components to minimize hair damage during the harsh oxidative hair treatment. However, to make the oil and fat components miscible with the aqueous hydrogen peroxide-containing (Ox) composition, the addition of emulsifiers may sometimes be unavoidable. Certain silicone compounds can suppress foaming, but for reasons of environmental sustainability, the bleaching agents in question should be formulated without the addition of silicone compounds.

[0050] In addition to surfactants and emulsifiers, the thickening agents used in the anhydrous oxidative hair lightening agent (B) are primarily responsible for the foam formation. These thickening agents, which are essentially hydrophilic polymeric thickeners, cause the ready-to-use lightening mixture (B) to take on a cream-like consistency when mixed with the aqueous hydrogen peroxide-containing composition (Ox). This consistency allows the hair to be easily applied initially, but then solidifies on the hair during the processing time to prevent it from dripping off the hair or running onto the scalp.

[0051] Another requirement for the bleaching agents, kits, and procedures presented here was the avoidance of polymers containing acrylic acid, acrylamides, acrylic esters, methacrylic acid, methacrylamides, methacrylic esters, vinylpyrrolidones, vinyl acetate, vinyl alcohol, and / or styrenes as chain-forming monomers. Therefore, the hydrophilic polymeric thickeners should be based on natural raw materials.

[0052] Furthermore, when mixing the anhydrous oxidative hair lightening agent (B) with the hydrogen peroxide-containing oxidation composition (Ox), as little heat of reaction as possible should be generated to avoid thermal irritation of the scalp. Preliminary tests have shown that the heat generation can be influenced by the choice of chelating agent. However, the choice of thickening agent also plays a role.

[0053] To overcome the aforementioned technical problems associated with the heat generated by the reaction, it has proven advantageous within the scope of the present invention that the oxidative hair lightening agent (B) does not contain kaolin. Preferred multi-component packaging units (kits), ready-to-use oxidative lightening compositions, methods for the oxidative lightening of keratin fibers, and preferred uses of the hair treatment agent (V) according to the invention are therefore characterized in that the oxidative hair lightening agent (B) does not contain kaolin.

[0054] In order to overcome the aforementioned technical problems related to the heat of reaction that develops, it has proven advantageous within the scope of the present invention that the hair treatment agent (V) contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.In a further embodiment of the invention, it is preferred that the oxidative hair lightening agent (B) contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates having the formula MgCCh ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates having the formula MgCCh ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from light basic magnesium carbonate, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.

[0055] In a further embodiment of the invention, it is preferred that the hair treatment agent (V) contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from light basic magnesium carbonate.

[0056] In a further embodiment of the invention, it is preferred that both the hair treatment agent (V) and the oxidative hair lightening agent (B) each contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates with the formula MgCCh₂·Mg(OH)₂·2 H₂O and magnesium hydroxide carbonates with the formula MgCCh₂·Mg(OH)₂, as well as mixtures of these magnesium hydroxide carbonates, or more preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate. Particularly preferably, the hair treatment agent (V) contains heavy basic magnesium carbonate and the oxidative hair lightening agent (B) contains light basic magnesium carbonate.In another particularly preferred embodiment of the invention, the hair treatment agent (V) contains light basic magnesium carbonate and the oxidative hair lightening agent (B) contains heavy basic magnesium carbonate.

[0057] According to the invention, the terms "powder" or "powder-like" mean a free-flowing dosage form consisting of individual particles that is solid at 20 °C and 1013 mbar, with individual particles having particle sizes ranging from 0.1 pm to a maximum of 1.6 mm. The particle size distribution can preferably be determined by laser diffraction measurement according to ISO 13320-1 (2020).If necessary, the particles can be adapted in their particle size to the requirements of the hair treatment agent (V) or an oxidative hair lightening agent (B) used in powder form according to the invention by physical treatment, such as sieving, pressing, granulating or pelletizing, or by the addition of certain excipients, in order to enable, for example, better miscibility of the individual powder components or the miscibility of the compositions (V) and / or (B) with the hydrogen peroxide preparation (Ox) and optionally an aqueous alkalizing component (Alk).

[0058] Hair lightening agents (B) in powder form, preferably used according to the invention, have a bulk density in the range of 400 to 1000 g / l (grams / liter), preferably 450 to 900 g / l, and particularly preferably 550 to 820 g / l. Hair treatment agents (V) preferred according to the invention have a bulk density in the range of 250 to 1000 g / l (grams / liter), preferably 300 to 900 g / l, and particularly preferably 400 to 700 g / l. The bulk density is preferably determined according to EN ISO 60 (version 2023) or DIN ISO 697 (version 01 / 1984).

[0059] Unless otherwise stated, all temperature specifications refer to a pressure of 1013 mbar.

[0060] The oxidative hair lightening agent (B) preferably used according to the invention can also be in tablet form. For this purpose, a bleaching powder (B) used according to the invention is preferably pressed into a tablet. The oxidative hair lightening agent (B) preferably used according to the invention can also be in granular form. For this purpose, a bleaching powder (B) used according to the invention is preferably processed into granules.

[0061] According to the invention, the terms "paste" or "paste-like" are to be understood as a dosage form which, at 20 °C and 1013 mbar, has a viscosity in the range of 200,000 to 1,600,000 mPas, preferably 250,000 to 1,400,000 mPas, particularly preferably 300,000 to 1,000,000 mPas, and most preferably 400,000 to 750,000 mPas.

[0062] The paste viscosity is preferably determined using a Brookfield instrument; RVDV II+; spindle no. 96, 4 revolutions per minute, at 20°C.

[0063] The oxidative hair lightening agent (B) used according to the invention contains as its first essential component at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid and mixtures thereof.

[0064] Peroxosulfuric acids include peroxodisulfuric acid and peroxomonosulfuric acid (Caro's acid).

[0065] Preferably, the at least one inorganic salt of a peroxosulfuric acid is selected from ammonium peroxodisulfate, ammonium peroxomonosulfate, alkali metal peroxodisulfates, alkali metal peroxomonosulfates, and alkali metal hydrogen peroxomonosulfates. Potassium peroxodisulfate, sodium peroxodisulfate, ammonium peroxodisulfate, and potassium hydrogen peroxomonosulfate, as well as mixtures thereof, are particularly preferred. Furthermore, in the work on the present invention, it has proven particularly preferred if the oxidative hair lightening agent (B) used according to the invention contains at least two different peroxodisulfates. Preferred peroxodisulfate salts are potassium peroxodisulfate-ammonium peroxodisulfate mixtures, potassium peroxodisulfate-ammonium peroxodisulfate-sodium peroxodisulfate mixtures, and potassium peroxodisulfate-sodium peroxodisulfate mixtures.Particularly preferred are mixtures of potassium peroxodisulfate and ammonium peroxodisulfate; mixtures of potassium peroxodisulfate and ammonium peroxodisulfate with an excess of potassium peroxodisulfate, free of sodium peroxodisulfate, are extremely preferred. According to the invention, particularly preferred mixtures of potassium peroxodisulfate (KPS) and ammonium peroxodisulfate (APS), free of sodium peroxodisulfate, are those with a KPS / APS weight ratio in the range of 4:1 to 2:1, preferably 3.5:1 to 2.5:1, and particularly preferably 3.2:1 to 2.8:1.

[0066] According to the invention, preferably used oxidative hair lightening agents (B) contain at least one oxidizing agent selected from inorganic salts of peroxosulfuric acid and mixtures thereof, in a total amount of 5 - 85 wt.%, preferably 10 - 70 wt.%, particularly preferably 17 - 55 wt.%, and most preferably 22 - 45 wt.%, in each case based on the weight of the oxidative hair lightening agent (B).

[0067] Oxidative hair lightening agents (B) used according to the invention further contain at least one complexing agent, preferably in a total amount of 0.1 to 5.0 wt.%, preferably 0.5 to 3.0 wt.%, particularly preferably 1.0 to 2.5 wt.%, extraordinarily preferably 1.5 to 2.0 wt.%, in each case based on the weight of the agent (B).The at least one complexing agent is preferably selected from MGDA (methylglycine diacetic acid), the sodium salts of MGDA, in particular trisodium methylglycine diacetate, ethylenediaminetetraacetic acid (EDTA), the sodium salts of EDTA, in particular disodium ethylenediaminetetraacetic acid and tetrasodium ethylenediaminetetraacetate, glutamic acid central amino acid (GLDA), central amino acid diacetic acid (GLDA), the sodium salts of GLDA, in particular glutamic acid central amino acid (GLDA), / V diacetic acid tetrasodium salt, iminodisuccinic acid (IDS), the sodium salts of IDS, in particular tetrasodium iminodisuccinate, ethylenediaminedisuccinic acid (EDDS), in particular (S,S)-EDDS and meso-EDDS, the sodium salts of EDDS, in particular the sodium salts of (S,S)-EDDS and meso-EDDS, in particular the sodium salts of (S,S)-EDDS and meso-EDDS, and mixtures thereof Contains complexing agents.

[0068] According to the invention, oxidative hair lightening agents (B) that are particularly preferred are characterized in that they contain at least one amino acid selected from alpha-amino acids, beta-amino acids and the salts of an alpha-amino acid or beta-amino acid, as well as mixtures of these substances.

[0069] In a further particularly preferred embodiment, an oxidative hair lightening agent (B) preferably used according to the invention is characterized in that it contains at least one amino acid from the group consisting of arginine, lysine, histidine, serine, aspartic acid, glutamine, cysteine, methionine, tryptophan, alanine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, phenylalanine, proline, threonine, tyrosine, valine and taurine, the salts of the aforementioned amino acids and mixtures of these substances.

[0070] According to the invention, exceptionally preferred amino acids are selected from the group consisting of arginine, lysine, serine, the salts of the aforementioned amino acids and mixtures of these substances.

[0071] Hair lightening agents (B) used in an exceptionally preferred manner according to the invention are characterized in that they contain at least one amino acid selected from the group consisting of arginine, lysine, serine, the salts of the aforementioned amino acids and mixtures of these substances.

[0072] The present invention encompasses both the L-form and the D-form of an amino acid, as well as mixtures thereof. Within the scope of the present invention, both possible enantiomers can therefore be used as specific compounds or mixtures thereof, particularly as racemates. However, it is particularly advantageous to use the naturally occurring isomeric form, usually the L-configuration. Accordingly, a particularly preferred hair lightening agent (B) is characterized in that it contains at least one amino acid from the group consisting of L-arginine, L-lysine, L-serine, L-histidine, L-asparagine, L-glutamine, L-cysteine, L-methionine, L-tryptophan, L-alanine, L-aspartic acid, L-glutamic acid, glycine, L-isoleucine, L-leucine, L-phenylalanine, L-proline, L-threonine, L-tyrosine and L-valine and taurine, the salts of the aforementioned amino acids as well as mixtures of these substances.Further oxidative hair lightening agents (B) used particularly preferably according to the invention are characterized in that the at least one alpha-amino acid or beta-amino acid and / or its salt is contained in a total amount of 0.1 to 3.0 wt.%, preferably 0.2 to 2.0 wt.%, particularly preferably 0.3 to 1.0 wt.%, and most preferably 0.3 to 0.5 wt.%, converted to the mass of free amino acid, in each case based on the weight of the oxidative hair lightening agent (B).

[0073] According to the invention, the oxidative hair lightening agents (B) used in a highly preferred manner contain at least one amino acid selected from arginine, lysine, serine or at least one salt of these amino acids, in a total amount of 0.1 to 3.0 wt.%, preferably 0.2 to 2.0 wt.%, particularly preferably 0.3 to 1.0 wt.%, and most preferably 0.3 to 0.5 wt.%, based on the weight of the oxidative hair lightening agent (B).

[0074] Further oxidative hair lightening agents (B) preferably used according to the invention contain polyquaternium-4. Polyquaternium-4 is hydroxyethylcellulose quaternized with diallyldimethylammonium chloride (INCI: Polyquaternium-4). It was surprisingly found that polyquaternium-4 can further optimize the swelling behavior of oxidative hair lightening agents preferred according to the invention after mixing with an aqueous hydrogen peroxide preparation. Polyquaternium-4 is particularly preferably contained in a total amount of 0.01 to 3.0 wt.%, preferably 0.1 to 1.0 wt.%, particularly preferably 0.1 to 0.7 wt.%, and extremely preferably 0.3 to 0.5 wt.%, in each case based on the weight of the oxidative hair lightening agent (B).

[0075] For the melanin-degrading effect of hydrogen peroxide and the bleaching effect on the keratin fiber, it is advantageous if the application mixture of hydrogen peroxide solution and persalt-containing hair lightening agent has an alkaline pH value in the range of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 - 10.5, and most preferably 9.5 - 10.3, each measured at 20°C.

[0076] To adjust the alkaline pH of the lightening application mixture according to the invention, the oxidative hair lightening agents (B) preferably used can contain, in addition to the at least one persalt, at least one solid alkalizing agent in such a total amount that the application mixture consisting of the hair treatment agent (V) according to the invention, the oxidative hair lightening agent (B), and the hydrogen peroxide-containing composition (Ox) has the desired alkaline pH. Alternatively, a fourth composition can be added to the application mixture consisting of (V), (B), and (Ox), which, in addition to water, contains one or more alkalizing agents in such an amount that the application mixture has an alkaline pH in the range of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 to 10.5, and most preferably 9.5 to 10.3, in each case measured at 20°C.

[0077] Oxidative hair lightening agents (B) used preferably according to the invention are therefore characterized in that they contain at least one inorganic alkalizing agent that is solid at 20 °C and 1013 mbar. Oxidative hair lightening agents (B) used particularly preferably according to the invention contain at least one inorganic alkalizing agent that is solid at 20 °C and 1013 mbar in a total amount of 4–70 wt.%, preferably 10–60 wt.%, particularly preferably 15–50 wt.%, further particularly preferably 20–55 wt.%, and most preferably 30–40 wt.%, in each case based on the weight of the oxidative hair lightening agent (B).

[0078] Further oxidative hair lightening agents (B) preferably used according to the invention contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, including in a total amount of 0.1 to 50 wt.%, preferably 4 to 30 wt.%, particularly preferably 10 to 15 wt.%, in each case based on the weight of the oxidative hair lightening agent (B), at least one sodium silicate or sodium metasilicate with a molar SiO2 / Na2O ratio of > 2, preferably 2.5 to 3.5.

[0079] Further oxidative hair lightening agents (B) preferably used according to the invention contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, including in a total amount of 0.1 to 20 wt.%, preferably 1 to 15 wt.%, particularly preferably 3 to 10 wt.%, in each case based on the weight of the oxidative hair lightening agent (B), at least one sodium silicate or sodium metasilicate with a molar SiO2 / Na2O ratio of 0.9 to 1.1, preferably 1. Further oxidative hair lightening agents (B) preferably used according to the invention contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, including in a total amount of 0.1 to 40 wt.%, preferably 1 to 30 wt.%, particularly preferably 5 to 25 wt.%, extremely preferably 10 to 17 wt.%, in each case based on the weight of the agent (B), at least one alkaline earth metal hydroxide carbonate or one alkaline earth metal carbonate and mixtures thereof.

[0080] Preferred alkaline earth metal hydroxide carbonates according to the invention are magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)₂ ■ 2 H₂O and those with the formula MgCOs ■ Mg(OH)₂. Further oxidative hair lightening agents (B) preferably used according to the invention contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, including in a total amount of 0.1 to 40 wt.%, preferably 1 to 30 wt.%, particularly preferably 5 to 25 wt.%, and most preferably 10 to 17 wt.%, in each case based on the weight of the agent (B), at least one magnesium hydroxide carbonate, which is preferably selected from magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)₂ ■ 2 H₂O and magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)₂.

[0081] As optional alkalizing agents, further inorganic alkalizing agents, which are particularly preferred according to the invention and are solid at 20 °C and 1013 mbar, are selected from alkaline earth metal silicates, alkaline earth metal metasilicates, alkali metal hydroxides, alkaline earth metal hydroxides, (earth) alkali metal phosphates and (earth) alkali metal hydrogen phosphates as well as mixtures of these substances.

[0082] Particularly preferred inorganic alkalizing agents according to the invention, which are solid at 20°C and 1013 mbar, are mixtures of at least one sodium silicate or sodium metasilicate with a molar SiO2 / Na2O ratio of 0.9 to 1.1, preferably 1, and at least one magnesium hydroxide carbonate. Further particularly preferred inorganic alkalizing agents according to the invention, which are solid at 20°C and 1013 mbar, are mixtures of at least one sodium silicate or sodium metasilicate with a molar SiO2 / Na2O ratio of 0.9 to 1.1, preferably 1, at least one sodium silicate or sodium metasilicate with a molar SiO2 / Na2O ratio of > 2, preferably 2.5 to 3.5, and at least one magnesium hydroxide carbonate.

[0083] According to the invention, oxidative hair lightening agents (B) used particularly preferably contain, based on their weight, 0.1 to 20 wt.%, preferably 1 to 15 wt.%, particularly preferably 3 to 10 wt.% sodium silicates with a molar SiO2 / Na2O ratio of 0.9 to 1.1, preferably 1 and 0.1 to 40 wt.%, preferably 1 to 30 wt.%, particularly preferably 5 to 25 wt.%, extremely preferably 10 to 17 wt.% magnesium hydroxide carbonate as an inorganic alkalizing agent, solid at 20 °C and 1013 mbar.

[0084] Further oxidative hair lightening agents (B) preferably used according to the invention are characterized in that they do not contain a polymer comprising acrylic acid, acrylamides, acrylic esters, methacrylic acid, methacrylamides and / or methacryl esters as a chain-forming monomer. Such polymers can, in certain cases, adversely affect the heat generation in the ready-to-use bleaching agent.

[0085] For safety reasons, the oxidative hair lightening agents (B), which are supplied as bleaching powders, should be formulated so that they do not produce dust, or produce only minimal dust, during use, particularly before or while being mixed with the hydrogen peroxide-containing composition (Ox). Suitable dust-reducing agents include, in particular, oils mixed with the dust-generating components of the bleaching powder, with the total amount of oils being 0.2–20% by weight, based on the weight of the oxidative hair lightening agent (B) supplied as bleaching powder.

[0086] If more than 20% by weight of oil is used, a paste forms with the anhydrous powdered components. Oxidative hair lightening agents (B) used according to the invention, which are present as a bleaching paste, contain, based on their weight, at least one oil in a total amount of 20.1–80% by weight, preferably 35–65% by weight.

[0087] By carefully selecting the oils, the application properties of the oxidative hair lightening agent, as well as the entire ready-to-use lightening product, can be optimized. When selecting oils, it is also important to consider consumer demand for products containing as few synthetically produced ingredients as possible, and instead relying on naturally derived ones. Oils of mineral origin, such as mineral oils and paraffins, exhibit good application properties and are readily available at affordable prices. For the sake of the overall product's sustainability, oils from renewable raw material sources can preferably be used instead of oils of mineral origin. Surprisingly, it was discovered that certain oils can very favorably influence the swelling behavior of the oxidative hair lightening agent according to the invention after mixing with an aqueous hydrogen peroxide preparation.According to the invention, preferably used oxidative hair lightening agents (B) contain, based on their weight, at least one oil in a total amount of 0.2 - 80 wt.%, preferably 1 - 70 wt.%, particularly preferably 4 - 60 wt.%, and extraordinarily preferably 5 - 20 wt.%.

[0088] According to the invention, the at least one oil is preferably selected from mineral oils, branched fatty alcohols with 8 to 24 carbon atoms, dialkyl ethers with 6 to 18 carbon atoms in the alkyl groups, and mixtures of the aforementioned substances.

[0089] According to the invention, preferred branched fatty alcohols with 8 to 24 carbon atoms are 2-octyl-1-dodecanol, 2-hexyl-1-decanol, 2-ethyl-1-hexanol, and isostearyl alcohol, as well as mixtures thereof. 2-Octyl-1-dodecanol is particularly preferred.

[0090] According to the invention, preferred dialkyl ethers with 6 to 18 carbon atoms in the alkyl groups are di-n-alkyl ethers with a total of 12 to 36 carbon atoms, in particular 16 to 24 carbon atoms in the molecule, such as di-n-octyl ether, di-n-decyl ether, di-n-nonyl ether, di-n-undecyl ether, di-n-dodecyl ether, di-n-octadecyl ether, n-hexyl-n-octyl ether, n-octyl-n-decyl ether, n-decyl-n-undecyl ether, n-undecyl-n-dodecyl ether, and n-hexyl-n-undecyl ether. Also preferred are dialkyl ethers with branched alkyl groups, each with 6 to 18 carbon atoms, in particular with alkyl groups substituted with an ethyl group at the 2-position. Preferred branched-chain dialkyl ethers with 6 to 18 carbon atoms in the alkyl group are selected from di-(2-ethylhexyl) ether and di-(2-ethyldecyl) ether. Di-n-octyl ether (INCI: Dicaprylyl ether), which is commercially available, for example, under the name Cetiol® OE from BASF, is particularly preferred.

[0091] Oxidative hair lightening agents (B) used preferably according to the invention are characterized in that they contain, based on their weight, at least one oil selected from mineral oils, branched fatty alcohols with 8 - 24 carbon atoms, dialkyl ethers with 6 to 18 C atoms in the alkyl groups, as well as mixtures of the aforementioned substances, in a total amount of 0.2 - 80 wt.%, preferably 1 - 70 wt.%, particularly preferably 4 - 60 wt.%, extraordinarily preferably 5 - 20 wt.%.

[0092] According to the invention, the oxidative hair lightening agents (B) used with particular preference are characterized in that, based on their weight, they contain at least one oil selected from mineral oils, branched fatty alcohols with 8 - 24 carbon atoms, dialkyl ethers with 6 to 18 C atoms in the alkyl groups, as well as mixtures of the aforementioned substances, in a total amount of 0.2 - 10 wt.%, preferably 1 - 7 wt.%, particularly preferably 4 - 6 wt.%, and particularly preferably 4.5 - 5.5 wt.%.

[0093] Further oxidative hair lightening agents (B) used with particular preference according to the invention are characterized in that they contain, based on their weight, at least one oil selected from mineral oils and 2-octyl-1-dodecanol as well as mixtures of the aforementioned substances, in a total amount of 0.2 - 10 wt.%, preferably 1 - 7 wt.%, particularly preferably 4 - 6 wt.%, and particularly preferably 5 - 5.5 wt.%.

[0094] Further oxidative hair lightening agents (B) used with particular preference according to the invention are characterized in that they contain, based on their weight, at least one oil selected from mineral oils and di-n-octyl ether as well as mixtures of the aforementioned substances, in a total amount of 0.2 - 10 wt.%, preferably 1 - 7 wt.%, particularly preferably 4 - 6 wt.%, and particularly preferably 5 - 5.5 wt.%.

[0095] Furthermore, silicone oils are also suitable oils according to the invention, but are less preferred for reasons of sustainability. Ester oils can also be used, but are less preferred due to the potential risk of hydrolysis, or should only be present in small amounts of 0.1 to a maximum of 2% by weight, based on the weight of the oxidative hair lightening agent (B).

[0096] Furthermore, it was found that an alkali metal or alkaline earth metal salt of a C12-C24 monocarboxylic acid, which may be saturated or unsaturated, linear or branched, can very favorably influence the swelling behavior of the ready-to-use hair lightening agent according to the invention.

[0097] Further oxidative hair lightening agents (B) used with particular preference according to the invention are therefore characterized in that they contain at least one alkali metal or alkaline earth metal salt of a C12-C24 monocarboxylic acid, which may be saturated or unsaturated, linear or branched, wherein the C12-C24 monocarboxylic acid is preferably selected from lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, arachidic acid, gadoleic acid, behenic acid, erucic acid and brassidic acid as well as mixtures thereof, wherein stearic acid and palmitic acid as well as mixtures thereof are particularly preferred and wherein the potassium, magnesium and calcium salts of the C12-C24 monocarboxylic acid are particularly preferred.In this context, potassium stearate, potassium palmitate, magnesium stearate, magnesium palmitate, calcium stearate, calcium palmitate, and mixtures of these substances are particularly preferred, with calcium stearate and magnesium stearate being especially preferred, and calcium stearate being particularly preferred. Further oxidative hair lightening agents (B) used with particular preference according to the invention are therefore characterized in that they contain, based on their weight, at least one alkali metal or alkaline earth metal salt of a C12-C24 monocarboxylic acid, which may be saturated or unsaturated, linear or branched, in a total amount of 0.05–1 wt.%, preferably 0.2–0.6 wt.%, and particularly preferably 0.3–0.5 wt.%. Further oxidative hair lightening agents (B) used with particular preference according to the invention are characterized in that they contain, based on their weight, calcium stearate in a total amount of 0.05–1 wt.%, preferably 0.2–0.6 wt.%.-%, particularly preferably 0.3 - 0.5 wt.%. Further oxidative hair lightening agents (B) used with exceptional preference according to the invention are characterized in that they contain, based on their weight, magnesium stearate in a total amount of 0.05 - 1 wt.%, preferably 0.2 - 0.6 wt.%, particularly preferably 0.3 - 0.5 wt.%.

[0098] Surprisingly, it was found that sodium hexametaphosphate can very favorably influence the swelling behavior of the ready-to-use hair lightening agent according to the invention after mixing all components. Further oxidative hair lightening agents (B) used with particular preference according to the invention are therefore characterized in that they contain, based on their weight, 0.05–0.5 wt.%, preferably 0.2–0.4 wt.%, sodium hexametaphosphate.

[0099] In a further preferred embodiment, the oxidative hair lightening agent (B) used according to the invention further comprises at least one dicarboxylic acid with 2 to 10 carbon atoms, which is particularly preferably selected from succinic acid, oxalic acid, malonic acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid and fumaric acid and / or at least one salt of these acids as well as mixtures of these compounds, wherein the at least one dicarboxylic acid with 2 to 10 carbon atoms is most preferably selected from succinic acid, malic acid, malonic acid and maleic acid as well as their salts.

[0100] According to the invention, preferred salts of dicarboxylic acids with 2 to 10 carbon atoms are selected from the mono- and disalts of the anions of succinic acid, oxalic acid, malonic acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid and fumaric acid with alkali metal ions, alkaline earth metal ions and the ions of basic amino acids, such as arginine, lysine and histidine, in particular with lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0101] The succinic acid particularly preferred according to the invention has a melting point in the range of 185–187 °C at 1013 mbar, and is therefore a solid at 20 °C. Suitable salts of succinic acid according to the invention are selected from the succinates and hydrogen succinates of alkali metal ions, alkaline earth metal ions, and the ions of basic amino acids, such as arginine, lysine, and histidine, in particular lithium, sodium, potassium, magnesium, and calcium ions, or the succinates and hydrogen succinates of basic amino acids, such as arginine, lysine, and / or histidine, e.g., arginine succinate, as well as mixtures of these salts. The aforementioned salts of succinic acid may also contain bound water of crystallization, in particular sodium succinate hexahydrate, which is particularly preferred according to the invention.

[0102] The malic acid particularly preferred according to the invention is optically active. For cost reasons, racemic DL-malic acid is preferred. Suitable salts of malic acid according to the invention are selected from the malates and hydrogen malates of alkali metal ions, alkaline earth metal ions, and the ions of basic amino acids, such as arginine, lysine, and histidine, in particular lithium, sodium, potassium, magnesium, and calcium ions, as well as mixtures of these salts, especially disodium malate and dipotassium malate, but also calcium malate. The aforementioned suitable salts of malic acid according to the invention may contain bound water of crystallization, in particular disodium malate half-hydrate and disodium malate trihydrate.

[0103] According to the invention, suitable salts of the particularly preferred malonic acid are selected from the malates and hydrogen malates of alkali metal ions, alkaline earth metal ions and the ions of basic amino acids, such as arginine, lysine and histidine, in particular lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0104] According to the invention, suitable salts of the particularly preferred maleic acid are selected from the maleates and hydrogen maleates of alkali metal ions and alkaline earth metal ions, in particular lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0105] According to the invention, suitable salts of the preferred fumaric acid are selected from the fumarates and hydrogen fumarates of alkali metal ions and alkaline earth metal ions, in particular lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0106] Suitable salts of the preferred D-tartaric acid according to the invention are selected from the tartrates and hydrogen tartrates of alkali metal ions and alkaline earth metal ions, in particular of lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0107] According to the invention, suitable salts of the preferred L-tartaric acid are selected from the tartrates and hydrogen tartrates of alkali metal ions and alkaline earth metal ions, in particular of lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0108] According to the invention, suitable salts of the preferred meso-tartaric acid are selected from the tartrates and hydrogen tartrates of alkali metal ions and alkaline earth metal ions, in particular lithium, sodium, potassium, magnesium and calcium ions, as well as mixtures of these salts.

[0109] According to the invention, preferably used oxidative hair lightening agents (B) contain at least one dicarboxylic acid with 2 to 10 carbon atoms, preferably selected from succinic acid, oxalic acid, malonic acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid and fumaric acid and / or at least one salt of these acids, in a total amount of 0.2 to 4.0 wt.%, preferably 0.33 to 3.0 wt.%, particularly preferably 0.4 to 2.0 wt.%, and most preferably 0.5 to 1.0 wt.%, based on the weight of the oxidative hair lightening agent (B), converted to the mass of free dicarboxylic acid.

[0110] Further oxidative hair lightening agents (B) preferably used according to the invention contain succinic acid and / or at least one salt of succinic acid in a total amount of 0.2 to 4.0 wt.%, preferably 0.33 to 3.0 wt.%, particularly preferably 0.4 to 2.0 wt.%, and most preferably 0.5 to 1.0 wt.%, based on the weight of the oxidative hair lightening agent.

[0111] Further oxidative hair lightening agents (B) preferably used according to the invention contain malic acid and / or at least one salt of malic acid in a total amount of 0.2 to 4.0 wt.%, preferably 0.33 to 3.0 wt.%, particularly preferably 0.4 to 2.0 wt.%, and most preferably 0.5 to 1.0 wt.%, based on the weight of the oxidative hair lightening agent.

[0112] Further oxidative hair lightening agents (B) preferably used according to the invention contain malonic acid and / or at least one salt of malonic acid in a total amount of 0.2 to 4.0 wt.%, preferably 0.33 to 3.0 wt.%, particularly preferably 0.4 to 2.0 wt.%, and most preferably 0.5 to 1.0 wt.%, based on the weight of the oxidative hair lightening agent.

[0113] According to the invention, oxidative hair lightening agents (B) particularly preferably used further contain at least one or more hydrophilic thickeners, which are preferably selected from polysaccharides that may be chemically and / or physically modified. Compounds from the group of polysaccharides are particularly preferred as hydrophilic thickeners according to the invention, since the basic structures of the polysaccharides are of natural origin and biodegradable. Preferred hydrophilic polysaccharide thickeners are selected from celluloses, cellulose ethers of C1-C4 alcohols, cellulose esters, xanthan gum, guar gum, alginic acids (and their corresponding physiologically acceptable salts, the alginates), agar-agar (with the polysaccharide agarose present as the main component in agar-agar), karaya gum, locust bean gum, gum arabic, pectins, dextrans, and mixtures thereof.

[0114] Starches, starch fractions, and starch derivatives such as amylose, amylopectin, and dextrins can, in principle, also be included as polysaccharides. However, it has been found that, within the scope of the present invention, starches, starch fractions, and starch derivatives exhibit less favorable effects than other polysaccharides. Oxidative hair lightening agents (B) used according to the invention are therefore characterized in that they do not contain any polysaccharide selected from starches, starch fractions, and starch derivatives.

[0115] Preferred cellulose ethers of C1-C4 alcohols and cellulose esters according to the invention are selected from methylcelluloses, ethylcelluloses, hydroxyalkylcelluloses (such as hydroxyethylcellulose), methylhydroxyalkylcelluloses and carboxymethylcelluloses (such as sodium carboxymethylcellulose, whose INCI name is Cellulose Gum) as well as their physiologically acceptable salts.

[0116] In preferred embodiments, sodium carboxymethylcellulose (preferably sodium carboxymethylcellulose with the INCI name Cellulose Gum) is included as a hydrophilic thickener to ensure reliable viscosity adjustment and residue-free application to keratin fibers, while minimizing contact with the scalp. In a preferred embodiment, sodium carboxymethylcellulose may be the sole hydrophilic thickener. Combinations of sodium carboxymethylcellulose and xanthan gum (preferably xanthan gum with the INCI name Xanthan Gum) are particularly preferred. Combinations of xanthan gum, sodium carboxymethylcellulose, and guar gum with the INCI name Cyamopsis Tetragonoloba Gum are exceptionally preferred.

[0117] According to the invention, oxidative hair lightening agents (B) particularly preferably used contain at least one hydrophilic thickener, preferably selected from polysaccharides which may be chemically and / or physically modified, in a total amount of 0.1 to 5 wt.%, preferably 0.5 to 4 wt.%, more preferably 1 to 3.5 wt.% and most preferably 2.5 to 3.4 wt.%, in each case based on the weight of the oxidative hair lightening agent (B).

[0118] In a further preferred embodiment of the present invention, the oxidative hair lightening agent (B) used according to the invention contains, based on its weight, 0.01 to 0.5 wt.%, preferably 0.05 to 0.1 wt.%, sodium carboxymethylcellulose.

[0119] In a further preferred embodiment of the present invention, the oxidative hair lightening agent (B) used according to the invention contains, based on its weight, 0.1 to 3 wt.%, preferably 0.2 to 1.0 wt.%, and more preferably 0.25 to 0.5 wt.%, hydroxyethylcellulose. Furthermore, the oxidative hair lightening agents (B) preferably used according to the invention may contain at least one direct dye. These are dyes that adhere directly to the hair and do not require an oxidative process to form the color. For matting undesirable residual color impressions caused by melanin degradation products, particularly in the reddish or bluish range, certain direct dyes of complementary colors are particularly preferably included. Direct dyes are typically nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, or indophenols.Direct dyes can be anionic, cationic, or nonionic. The direct dyes are preferably present in an amount of 0.001 to 2% by weight, based on the weight of the oxidative hair lightening agent (B).

[0120] Preferred anionic direct dyes are the compounds known under the international names or trade names 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. Preferred cationic direct-drawing dyes are cationic triphenylmethane dyes, for example 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 direct-drawing 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 direct dyes marketed under the trademark Arianor are also preferred cationic direct dyes according to the invention. Nonionic direct dyes particularly suitable are nonionic nitro and quinone dyes and neutral azo dyes. Preferred nonionic direct dyes are those known by the international names or...Handelsnamen 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 10, HC Red 11 , HC Red 13, HC Red BN, HC Blue 2, HC Blue 1 1 , HC Blue 12, Disperse Blue 3, HC Violet 1 , Disperse Violet 1 , Disperse Violet 4, Disperse Black 9 bekannten Verbindungen, sowie 1 ,4-Diamino-2-nitrobenzol, 2-Amino-4-nitrophenol, 1 ,4-Bis-(2-hydroxyethyl)-amino-2-nitro- benzol, 3-Nitro-4-(2-hydroxyethyl)aminophenol, 2-(2-Hydroxyethyl)amino-4,6-dinitrophenol, 4-[(2- Hydroxyethyl) amino]-3-nitro-1 -methylbenzol, 1-Amino-4-(2-hydroxyethyl)amino-5-chlor-2-nitroben- zol, 4-Amino-3-nitrophenol, 1-(2'-Ureidoethyl)amino-4-nitrobenzol, 2-[(4-Amino-2-nitrophenyl)ami- no]-benzoesäure, 6-Nitro-1 ,2,3,4-tetrahydrochinoxalin, 2-Hydroxy-1 ,4-naphthochinon, Pikramin- säure und deren Salze, 2-Amino-6-chloro-4-nitrophenol, 4-Ethylamino-3-nitrobenzoesäure und 2-Chlor-6-ethylamino-4-nitrophenol.A combination of Tetrabromophenol Blue and Acid Red 92 is particularly preferred according to the invention.

[0121] The oxidation composition (Ox) used in the aforementioned brightening process according to the invention essentially contains water and hydrogen peroxide. The concentration of the hydrogen peroxide is determined on the one hand by legal requirements and on the other hand by the desired effect. It is 0.5–20 wt.%, preferably 3–12 wt.%, and particularly preferably 6–9 wt.% hydrogen peroxide (calculated as 100% H₂O₂), in each case based on the weight of the oxidation composition (Ox).

[0122] The oxidation composition (Ox) preferably has an acidic pH value, in particular a pH value in the range of 1.5 to 5.5, measured at 20°C, to stabilize the hydrogen peroxide. Complexing agents, preservatives, stabilizing agents and / or buffer substances are also preferably included to stabilize the hydrogen peroxide.

[0123] According to the invention, the oxidative hair lightening agent (B) is preferably composed such that the mixture with the hair treatment agent (V) according to the invention or preferred according to the invention and with the aforementioned oxidation composition (Ox), i.e. the ready-to-use lightening agent, in particular bleaching agent, has an alkaline pH value, preferably a pH value of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 - 10.5, extraordinarily preferably 9.5 - 10.0, in each case measured at 20 °C.

[0124] According to the invention, oxidation compositions (Ox) that are particularly preferred further contain at least one oil and / or at least one grease component with a melting point in the range of 23 - 110 °C, preferably in a total amount of 0.1 - 60 wt.%, particularly preferably 0.5 - 40 wt.%, and most preferably 2 - 24 wt.%, in each case based on the weight of the oxidation composition (Ox) that is preferred according to the invention.

[0125] The oils suitable for the oxidation compositions (Ox) preferably used according to the invention are largely the same oils disclosed above as suitable dedusting agents for bleaching powders (B) and as carrier oils for bleaching pastes (B).

[0126] In the oxidation compositions (Ox) preferably used according to the invention, the fatty components with a melting point in the range of 23 - 110 °C are selected from linear saturated 1-alkanols with 12 - 30 carbon atoms, preferably in a total amount of 0.1 - 8 wt. %, particularly preferably 3.0 to 6.0 wt. %, in each case based on the weight of the oxidation composition (Ox) used according to the invention.

[0127] Preferably, the at least one linear saturated 1-alkanol with 12-30 carbon atoms is selected from lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol, and behenyl alcohol, as well as from mixtures of these 1-alkanols, particularly preferably from cetyl alcohol, stearyl alcohol, and cetyl alcohol / stearyl alcohol mixtures.

[0128] According to the invention, oxidation compositions (Ox) preferably used further contain, based on their weight, at least one linear saturated 1-alkanol with 12-30 carbon atoms in a total amount of 0.1-8 wt.%, preferably in a total amount of 2-6 wt.%, wherein at least one 1-alkanol selected from cetyl alcohol, stearyl alcohol and cetyl alcohol / stearyl alcohol mixtures is included.

[0129] Further oxidation compositions (Ox) preferably used according to the invention contain at least one surfactant or at least one emulsifier, preferably in a total amount of 0.5 - 10 wt.%, preferably 1 - 5 wt.%, in each case based on the weight of the oxidation composition (Ox) used according to the invention.

[0130] Surfactants and emulsifiers as defined in this application are amphiphilic (bifunctional) compounds consisting of at least one hydrophobic and at least one hydrophilic molecular moiety. The hydrophobic moiety is preferably a hydrocarbon chain with 8-28 carbon atoms, which may be saturated or unsaturated, linear or branched. A linear C8-C28 alkyl chain is particularly preferred. Key properties of surfactants and emulsifiers include oriented absorption at interfaces, aggregation into micelles, and the formation of lyotropic phases.

[0131] According to the invention, anionic, nonionic, and cationic surfactants are particularly suitable. However, zwitterionic and amphoteric surfactants are also very suitable according to the invention.

[0132] In the compositions according to the invention, all anionic surfactants suitable for use on the human body can be used as anionic surfactants. These are characterized by a water-soluble anionic group, such as a carboxylate, sulfate, sulfonate, or phosphate group, and a lipophilic alkyl group with 8 to 30 carbon atoms. Additionally, the molecule may contain glycol or polyglycol ether groups, ester, ether, and amide groups, as well as hydroxyl groups. Examples of suitable anionic surfactants include linear and branched fatty acids with 8 to 30 carbon atoms (soaps), alkyl ether carboxylic acids, acyl sarcosides, acyltaurides, acyl isethionates, sulfosuccinic acid mono-, dialkyl esters and sulfosuccinic acid monoalkyl polyoxyethyl esters, linear alkanesulfonates, linear alpha-olefin sulfonates, alkyl sulfates and alkyl ether sulfates, as well as alkyl and / or alkenyl phosphates.Preferred anionic surfactants are alkyl sulfates, alkyl ether sulfates, and alkyl ether carboxylic acids, each with 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms in the alkyl group, and up to 12 glycol ether groups, preferably 2 to 6 glycol ether groups in the molecule. Examples of such surfactants are the compounds with the INCI names Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Sodium Myreth Sulfate, or Sodium Laureth Carboxylate.

[0133] Zwitterionic surfactants are surface-active compounds that contain at least one quaternary ammonium group and at least one carboxylate, sulfonate, or sulfate group in their molecule. Particularly suitable zwitterionic surfactants include the so-called betaines, such as N-alkyl-N,N-dimethylammonium glycinates (e.g., cocoalkyl-dimethylammonium glycinate), N-acyl-aminopropyl-N,N-dimethylammonium glycinates (e.g., cocoacylaminopropyl dimethylammonium glycinate), and 2-alkyl-3-carboxymethyl-3-hydroxyethylimidazolines, each with 8 to 18 carbon atoms in the alkyl or acyl group, as well as cocoacylaminoethylhydroxyethylcarboxymethyl glycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known under the INCI name cocamidopropyl betaine.

[0134] Amphoteric surfactants are defined as surface-active compounds that, in addition to a Cs-C24 alkyl or acyl group in the molecule, contain at least one free amino group and at least one -COOH or -SOsH group and are capable of forming internal salts. Examples of suitable amphoteric surfactants include N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycine, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids, and alkylaminoacetic acids, each with 8 to 24 carbon atoms in the alkyl group. Particularly preferred amphoteric surfactants are N-cocosalkylaminopropionate, cocosacylaminoethylaminopropionate, and Ci2-Ci8-acylsarcosine.

[0135] Non-ionic surfactants contain, as a hydrophilic group, e.g. a polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether groups. Examples of such compounds include addition products of 4 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear and branched fatty alcohols, fatty acids and alkylphenols, each with 8 to 20 carbon atoms in the alkyl group; ethoxylated mono-, di- and triglycerides, such as glycerol monolaurate + 20 ethylene oxide, and glycerol monostearate + 20 ethylene oxide; sorbitan fatty acid esters and addition products of ethylene oxide to sorbitan fatty acid esters, such as the polysorbates (Tween 20, Tween 21, Tween 60, Tween 61, Tween 81); addition products of ethylene oxide to fatty acid alkanolamides and fatty amines; and alkyl polyglycosides.Suitable non-ionic surfactants include, in particular, C8-C22 alkyl mono- and oligoglycosides and their ethoxylated analogues, as well as ethylene oxide adsorption products to saturated or unsaturated linear fatty alcohols with 2 to 30 moles of ethylene oxide per mole of fatty alcohol.

[0136] Further oxidation compositions preferably used according to the invention are characterized in that the at least one anionic surfactant is selected from alkyl sulfates, alkyl ether sulfates and alkyl ether carboxylic acids, each having 10 to 18 C atoms, preferably 12 to 14 C atoms in the alkyl group and up to 12, preferably 2 to 6 glycol ether groups, in the molecule.

[0137] Further oxidation compositions preferably used according to the invention are characterized in that they contain at least one nonionic surfactant selected from ethylene oxide reaction products to saturated or unsaturated linear fatty alcohols, each containing 2 to 30 moles of ethylene oxide per mole of fatty alcohol, and at least one anionic surfactant selected from alkyl sulfates, alkyl ether sulfates, and alkyl ether carboxylic acids, each having 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms in the alkyl group, and up to 12, preferably 2 to 6, glycol ether groups in the molecule. The weight ratio of all anionic surfactants to all nonionic surfactants is particularly preferably in the range of 5 to 50, preferably 10 to 30. In principle, all cationic surfactants suitable for use on the human body are suitable as cationic surfactants in the oxidation compositions (Ox) preferably used according to the invention.These are characterized by at least one water-soluble, cationic group, such as a quaternary ammonium group, or by at least one water-soluble, cationizable group, such as an amine group, and furthermore by at least one (lipophilic) alkyl group with 6 to 30 carbon atoms, or at least one (lipophilic) imidazole group, or at least one (lipophilic) imidazole alkyl group. Oxidation compositions (Ox) used particularly preferably according to the invention contain at least one cationic surfactant, which is preferably selected from quaternary ammonium compounds with at least one C8-C24 alkyl group, ester quats, and amidoamines, each with at least one C8-C24 acyl group, as well as mixtures thereof.Preferred quaternary ammonium compounds with at least one C8-C24 alkyl group are ammonium halides, particularly chlorides, and ammonium alkyl sulfates, such as methosulfates or ethosulfates, like C8-C24 alkyltrimethylammonium chlorides, C8-C24 dialkyldimethylammonium chlorides, and C8-C24 trialkylmethylammonium chlorides, e.g., cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylammonium chloride, lauryldimethylbenzylammonium chloride, and tricetylmethylammonium chloride, as well as the imidazolium compounds known under the INCI names Quaternium-27, Quaternium-83, Quaternium-87, and Quaternium-91. The alkyl chains of the surfactants mentioned above preferably have 8 to 24 carbon atoms.

[0138] Esterquats are cationic surfactants containing at least one ester group, at least one quaternary ammonium group as a structural element, and at least one C8-C24 alkyl or C8-C24 acyl group. Preferred esterquats are quaternary ester salts of fatty acids with triethanolamine, quaternary ester salts of fatty acids with diethanolalkylamines, and quaternary ester salts of fatty acids with 1,2-dihydroxypropyldialkylamines. N,N-Bis(2-palmitoyloxyethyl)dimethylammonium chloride, distearoylethyl dimonium methosulfate, and distearoylethyl hydroxyethylmonium methosulfate are preferred examples of such esterquats.

[0139] Alkylamidoamines are typically prepared by amidation of natural or synthetic C8-C24 fatty acids and fatty acid fractions with di-(C1-C3)alkylaminoamines. A particularly suitable compound from this group of substances according to the invention is stearamidopropyl dimethylamine.

[0140] According to the invention, oxidation compositions (Ox) that are particularly preferably used contain at least one cationic surfactant in a total amount of 0.01 - 5 wt.%, preferably 0.1 - 3 wt.%, particularly preferably 0.3 - 2 wt.%, in each case based on the weight of the oxidation composition (Ox) used according to the invention.

[0141] The ready-to-use mixtures of a hair treatment agent (V) according to the invention or a preferred one according to the invention, an oxidative hair lightening agent (B) with one of the aforementioned oxidation compositions (Ox) preferably have a viscosity in the range of 15,000 to 100,000 mPas, particularly preferably 20,000 to 85,000 mPas, in each case measured at 20°C with a Brookfield viscometer type DV-II+, spindle 5, at a speed of 4 revolutions / minute. A viscosity in this range allows the ready-to-use agent to be applied easily and, at the same time, has such flow properties that it guarantees a sufficiently long contact time at the site of action on the keratinous fibers. A multi-component packaging unit comprises several individual components that are packaged separately from one another, as well as a common packaging for these components, for example, a folding carton.The components are provided separately in different containers. Within the scope of the present invention, a container is understood to be an envelope in the form of a bottle, tube, can, bag, sachet, or similar envelope, which may be resealable. According to the invention, there are no limitations on the material used for the envelope. However, glass or plastic envelopes are preferred.

[0142] In addition, the packaging unit may include application aids such as combs, brushes or paintbrushes, personal protective clothing, especially disposable gloves, and instructions for use.

[0143] Preferably, the exposure time is 5 to 60 minutes, more preferably 5 to 50 minutes, and most preferably 10 to 45 minutes. During the exposure time of the agents on the fiber, it can be advantageous to support the whitening process by applying heat. An exposure phase at room temperature is also according to the invention. In particular, the temperature during the exposure time is between 20 °C and 40 °C, more preferably between 25 °C and 38 °C. The agents already produce good treatment results at physiologically tolerable temperatures below 45 °C.

[0144] After the bleaching process is complete, all components on the keratin fibers are rinsed out of the hair with water or a surfactant-containing cleanser. Commercially available shampoo can be used as a cleanser, although it is not necessary to use a cleanser and can be rinsed with tap water if the bleaching agent has a higher surfactant content.

[0145] The statements made regarding the means (V), (B) and (Ox) according to the invention and those preferred according to the invention also apply mutatis mutandis to the multi-component packaging units (kits of parts) according to the invention and those preferred according to the invention.

[0146] The statements made regarding the means (V), (B) and (Ox) according to the invention and those preferred according to the invention also apply mutatis mutandis to the methods according to the invention and those preferred according to the invention for brightening the keratinous fibers.

[0147] The statements made regarding the means (V), (B) and (Ox) according to the invention and the preferred means according to the invention also apply mutatis mutandis to the uses according to the invention and the preferred uses according to the invention.

[0148] In summary, the subject matter of the invention is described by the following points:

[0149] 1. Free-flowing hair treatment product (V), containing, each on a weight basis,

[0150] - at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, in a total amount of 6.9–85 wt.%, preferably 10–80 wt.%, particularly preferably 15–75 wt.%, further particularly preferably 20–70 wt.%, extremely preferably 30–65 wt.%, further

[0151] - 10-93 wt.%, preferably 15-80 wt.%, particularly preferably 20-60 wt.%, further particularly preferably 23-50 wt.%, extremely preferably 25-35 wt.%, kaolin, furthermore - at least one polysaccharide in a total amount of 0.1-5.0 wt.%, preferably 0.5-3.0 wt.%, particularly preferably 0.8-2.0 wt.%, extremely preferably 1.0-1.5 wt.%, furthermore

[0152] - 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% free water,

[0153] - other ingredients in a total quantity of 0 to a maximum of 7.0% by weight,

[0154] - wherein the hair treatment composition does not contain an oxidizing agent. Hair treatment composition according to point 1, characterized in that the at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, is selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from light basic magnesium carbonate, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.Hair treatment composition according to point 1 or 2, characterized in that the at least one polysaccharide is selected from xanthan gum, cellulose, cellulose ethers of C1-C4 alcohols, cellulose esters, guar gum, alginic acids and their corresponding physiologically acceptable salts, alginates, agar agar, agarose, karaya gum, locust bean gum, gum arabic, pectins, dextrans and mixtures thereof, preferably selected from xanthan gum, the cellulose ethers of C1-C4 alcohols, particularly preferably selected from methylcelluloses, ethylcelluloses, hydroxyalkylcelluloses, in particular hydroxyethylcellulose and methylhydroxyalkylcelluloses, cellulose esters, preferably carboxymethylcelluloses, particularly preferably sodium carboxymethylcellulose, the INCI name of which is cellulose gum, its physiologically acceptable salts; and mixtures thereof.Hair treatment composition according to any one of points 1-3, characterized in that the at least one polysaccharide is not starch, a starch fraction, or a starch derivative. Hair treatment composition according to any one of points 1-4, characterized in that the at least one further ingredient is selected from oils, complexing agents, sequestrants, in particular sodium hexametaphosphate, furthermore hair conditioning agents and perfumes, as well as mixtures of these further ingredients. Hair treatment composition according to point 5, characterized in that at least one oil is contained in a total amount of 0.1 to 7 wt.%, preferably 0.2 to 5 wt.%, particularly preferably 0.5 to 4 wt.%, and extremely preferably 1.0 to 3.5 wt.%, in each case based on the weight of the hair treatment composition. Hair treatment composition according to point 5 or 6, characterized in that 0.1 to 2.0 wt.%, preferably 0.2 to 1.0 wt.%, and particularly preferably 0.3 to 0.8 wt.%, is contained in a total amount of 0.1 to 2.0 wt.%, preferably 0.2 to 1.0 wt.%, and particularly preferably 0.3 to 0.8 wt.%.-%, most preferably 0.4 to 0.6 wt%, sodium hexametaphosphate, in each case based on the weight of the hair treatment agent. Multi-component packaging unit (kit-of-parts) for lightening keratinous fibers, containing at least three separately packaged components and characterized in that i) the first component (V) is a free-flowing hair treatment agent according to any one of points 1-7, ii) the second component (B) is an oxidative hair lightening agent, containing a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, as well as mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt%, preferably 0.1 to 8 wt%, particularly preferably 0.5 to 5 wt%.- % water, each based on the weight of the oxidative hair lightening agent, iii) the third component (Ox) is an oxidation composition which, each based on its weight, contains 50-96 wt.%, preferably 70-93 wt.%, particularly preferably 80-90 wt.% water and 0.5-20 wt.% hydrogen peroxide and furthermore at least one pH adjuster in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably in a weight-based ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40) are in relation to each other.A method for lightening or lightening keratinous fibers, in particular human hair, characterized in that a free-flowing hair treatment agent (V) according to any one of points 1-7 is mixed with an oxidative hair lightening agent (B) containing a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, as well as mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, each based on the weight of the oxidative hair lightening agent, and with an oxidation composition (Ox) which, each based on its weight, contains 50-96 wt.%, preferably 70-93 wt.%, particularly preferably 80-90 wt.% water and 0.5 - 20 wt.-% hydrogen peroxide and further contains at least one pH adjuster in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, this mixture is applied directly, preferably within 10 seconds to 15 minutes after its preparation, to the keratin-containing fibers and.

[0155] The solution is left on the fibers for 5 to 60 minutes, and the fibers are then rinsed with water and optionally washed with a surfactant-containing cleaning agent, wherein the components (V), (B) and (Ox) are preferably mixed together in a weight ratio (V) : (B) : (Ox) of (1-10) : (10 - 30) : (20 - 50), more preferably (3 - 7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).Aqueous ready-to-use composition for the oxidative lightening or lightening of keratin fibers, in particular hair, comprising three components which are mixed together before application to the keratin fibers, comprising i) a free-flowing hair treatment agent (V) according to any one of points 1-7, ii) an oxidative hair lightening agent (B) comprising a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and iii) an oxidation composition (Ox) comprising, in each case based on its weight, 50- 96 wt.%, preferably 70 - 93 wt.%, particularly preferably 80 - 90 wt.%.-%, water and 0.5 - 20 wt% hydrogen peroxide and further contains at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably present in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40). Composition according to point 10, characterized in that the mixture of the hair treatment agent (V) according to one of points 1-7, the oxidative hair lightening agent (B) and the oxidation composition (Ox), optionally after the addition of a fourth alkalizing component (Alk), has a pH value of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0 to 10.5, and most preferably 9.5 to 10.3, in each case measured at 20°C.Use of a free-flowing hair treatment agent (V) according to any one of points 1-7 for thickening an aqueous ready-to-use composition for the oxidative lightening or lightening of keratin fibers, in particular hair, comprising i) an oxidative hair lightening agent (B) containing a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and ii) an oxidizing composition (Ox) comprising, in each case based on its weight, 50-96 wt.%, preferably 70-93 wt.%, particularly preferably 80 - 90 wt.%, water and 0.5 - 20 wt.The composition contains -% hydrogen peroxide and further contains at least one pH adjuster in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B), and (Ox) are preferably present in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), and particularly preferably (4-6) : (18-22) : (30-40). The multi-component packaging unit (kit-of-parts) according to point 8, the process according to point 9, the aqueous ready-to-use composition according to point 10 or 11, or the use according to point 12, is characterized in that the oxidative hair lightening agent (B) does not contain kaolin.Multi-component packaging unit (kit-of-parts) according to point 8 or 13, process according to point 9 or 13, aqueous ready-to-use composition according to point 10, 11 or 13 or use according to point 12 or 13, characterized in that both the hair treatment agent (V) and the oxidative hair lightening agent (B) each contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates with the formula MgCOs ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.Kit according to point 8, 13 or 14, method according to point 9, 13 or 14, aqueous ready-to-use composition according to point 10, 11, 13 or 14 or use according to one of points 12 to 14, characterized in that the at least one oxidizing agent a) is contained in a total amount of 5 - 85 wt.%, preferably 10 - 70 wt.%, particularly preferably 17 - 55 wt.%, extraordinarily preferably 22 - 45 wt.%, in each case based on the weight of the oxidative hair lightening agent (B).Kit according to point 8 or 13 to 15, process according to point 9 or 13 to 15, aqueous ready-to-use composition according to point 10, 11 or 13 to 15 or use according to one of points 12 to 15, characterized in that the at least one oxidizing agent a) is selected from sodium peroxodisulfate, potassium peroxodisulfate, ammonium peroxodisulfate, sodium peroxomonosulfate, potassium peroxomonosulfate, ammonium peroxomonosulfate and mixtures of these compounds, preferably potassium peroxodisulfate-ammonium peroxodisulfate mixtures, potassium peroxodisulfate-ammonium peroxodisulfate-sodium peroxodisulfate mixtures and potassium peroxodisulfate-sodium peroxodisulfate mixtures, particularly preferably from potassium peroxodisulfate-ammonium peroxodisulfate mixtures, extraordinarily preferably from potassium peroxodisulfate-ammonium peroxodisulfate mixtures with an excess of potassium peroxodisulfate, that are free of sodium peroxodisulfate.Kit according to point 8 or 13 to 16, method according to point 9 or 13 to 16, aqueous ready-to-use composition according to point 10, 11 or 13 to 16 or use according to one of points 12 to 16, characterized in that the at least one complexing agent c) is contained in a total amount of 0.1 to 5.0 wt.%, preferably 0.5 to 3.0 wt.%, particularly preferably 1.0 to 2.5 wt.%, extremely preferably 1.5 to 2.0 wt.%, in each case based on the weight of the agent (B). Kit according to point 8 or 13 to 17, method according to point 9 or 13 to 17, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 17 or use according to one of points 12 to 17, characterized in that the agent (B) contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, including in a total amount of 0.1 to 40 wt.%, preferably 1 to 30 wt.%, particularly preferably 5 to 25 wt.%, most preferably 10 to 17 wt.%.-%, in each case based on the weight of the agent (B), at least one magnesium hydroxide carbonate, preferably selected from magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2. Kit according to one of points 8 or 13 to 18, process according to point 9 or 13 to 18, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 18 or use according to one of points 12 to 18, characterized in that the agent (B) contains at least one alpha-amino acid or beta-amino acid and / or its salt.Kit according to one of points 8 or 13 to 19, method according to point 9 or 13 to 19, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 19 or use according to one of points 12 to 19, characterized in that the agent (B) contains the at least one alpha-amino acid or beta-amino acid and / or its salt in a total amount, converted to the mass of free amino acid, of 0.1 to 3.0 wt.%, preferably 0.2 to 1.5 wt.%, particularly preferably 0.3 to 0.6 wt.%, extremely preferably 0.4 to 0.5 wt.%, in each case based on the weight of the agent (B).Kit according to one of points 8 or 13 to 20, method according to point 9 or 13 to 20, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 20 or use according to one of points 12 to 20, characterized in that the agent (B) contains at least one alpha-amino acid selected from serine, lysine, arginine, the salts of these amino acids and mixtures of the aforementioned substances, wherein mixtures of lysine and arginine are particularly preferred. Kit according to one of points 8 or 13 to 21, method according to point 98 or 13 to 21, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 21 or use according to one of points 12 to 21, characterized in that the agent (B) contains 0.01 to 3.0 wt.%, preferably 0.1 to 1.0 wt.%, particularly preferably 0.1 to 0.7 wt.%, extremely preferably 0.3 to 0.5 wt.%, polyquaternium-4, in each case based on the weight of agent (B).Kit according to one of points 8 or 13 to 22, method according to point 9 or 13 to 22, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 22 or use according to one of points 12 to 22, characterized in that the agent (B) contains at least one alkali metal or alkaline earth metal salt of a C12-C24 monocarboxylic acid, which may be saturated or unsaturated, linear or branched, wherein the C12-C24 monocarboxylic acid is preferably selected from lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, arachic acid, gadoleic acid, behenic acid, erucic acid and brassidic acid, and mixtures thereof, wherein stearic acid and palmitic acid, and mixtures thereof, are particularly preferred, and wherein the potassium, magnesium and calcium salts of the C12-C24 monocarboxylic acids are extremely preferred.Kit according to one of points 8 or 13 to 23, method according to point 9 or 13 to 23, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 23 or use according to one of points 12 to 23, characterized in that the agent (B), in each case based on its weight, contains at least one alkali metal or alkaline earth metal salt of a C12-C24 monocarboxylic acid, which may be saturated or unsaturated, linear or branched, in a total amount of 0.05 - 1 wt.%, preferably 0.2 - 0.6 wt.%, particularly preferably 0.3 - 0.5 wt.%. Kit according to one of points 8 or 13 to 24, method according to point 9 or 13 to 24, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 24 or use according to one of points 12 to 24, characterized in that the agent (B), in each case based on its weight, contains 0.05 - 0.5 wt.%, preferably 0.2 - 0.4 wt.% sodium hexametaphosphate.Kit according to one of points 8 or 13 to 25, method according to point 9 or 13 to 25, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 25 or use according to one of points 12 to 25, characterized in that the agent (B) further comprises at least one dicarboxylic acid with 2 to 10 carbon atoms, selected from succinic acid, oxalic acid, malonic acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid and fumaric acid, the salts of the aforementioned acids as well as mixtures of the aforementioned substances, wherein preferably the at least one dicarboxylic acid with 2 to 10 carbon atoms and / or its salt(s) in a total amount of 0.2 to 4.0 wt.%, preferably 0.33 to 3.0 wt.%, particularly preferably 0.5 to 2.0 wt.%, extremely preferably 0.7 - 1.0 wt.%.-% is contained, in each case converted to the undissociated acid and based on the weight of the agent (B). Kit according to one of points 8 or 13 to 26, process according to point 9 or 13 to 26, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 26 or use according to one of points 12 to 26, characterized in that the agent (B) contains at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, in a total amount of 4–70 wt.%, preferably 10–60 wt.%, particularly preferably 15–50 wt.%, further particularly preferably 20–55 wt.%, and most preferably 30–40 wt.%, in each case based on the weight of the agent (B).Kit according to one of points 8 or 13 to 27, method according to point 9 or 13 to 27, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 27 or use according to one of points 12 to 27, characterized in that the hair treatment agent (V) contains heavy basic magnesium carbonate and the oxidative hair lightening agent (B) contains light basic magnesium carbonate or the hair treatment agent (V) contains light basic magnesium carbonate and the oxidative hair lightening agent (B) contains heavy basic magnesium carbonate. 29.Kit according to one of points 8 or 13 to 28, method according to point 9 or 13 to 28, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 28 or use according to one of points 12 to 28, characterized in that the agent (B) contains at least one oil selected from mineral oils, branched fatty alcohols with 8 to 24 carbon atoms, dialkyl ethers with 6 to 18 carbon atoms in the alkyl groups, and mixtures of the aforementioned substances, in a total amount of 0.2 to 80 wt.%, preferably 1 to 70 wt.%, particularly preferably 4 to 60 wt.%, and most preferably 5 to 20 wt.%, in each case based on the weight of the agent (B).

[0156] 30. Kit according to one of points 8 or 13 to 29, method according to point 9 or 13 to 29, aqueous ready-to-use composition according to one of points 10, 11 or 13 to 29 or use according to one of points 12 to 29, characterized in that the agent (B) does not contain a polysaccharide selected from starches, starch fractions and starch derivatives.

[0157] The following examples illustrate the subject matter of the invention without limiting it thereto.

[0158] Experimental section

[0159] 1. Studies on its applicability in highlighting (balayage)

[0160] Table 1: Bleaching powder as an oxidative hair lightening agent used according to the invention (B)

[0161] (all quantities in wt.%)

[0162] Table 2: Developers containing oxidizing agents as oxidation compositions (Ox) used according to the invention (all quantities in wt.%)

[0163] Table 3: Free-flowing hair treatment agent (V), according to the invention (all quantities in wt.%)

[0164] The hair treatment agent (V) according to the invention, as shown in Table 3, has a bulk density in the range of 200 - 300 g / l.

[0165] A 1 wt% aqueous suspension of the hair treatment product (V) according to Table 3 has a pH value in the range of 10.40 - 11.40, measured at 20°C.

[0166] Performing the hair lightening procedure

[0167] For the lightening process according to the invention with the addition of the hair treatment agent (V), each of the bleaching powders from Table 1 was mixed in a mixing bowl with one of the hydrogen peroxide-containing oil-in-water emulsions according to Table 2 and the hair treatment agent (V) according to Table 3 in a weight ratio of 1 :4:7 (1 part by weight of hair treatment agent (V) and 4 parts by weight of bleaching powder and 7 parts by weight of H2O2 developer) to form a ready-to-use bleaching agent according to the invention.

[0168] For the non-inventive lightening process without the addition of the hair treatment agent (V), each of the bleaching powders from Table 1 was mixed with one of the hydrogen peroxide-containing oil-in-water emulsions according to Table 2 in a weight ratio of 1 :2 (1 part by weight of bleaching powder and 2 parts by weight of H2O2 developer) in a mixing bowl to produce a non-inventive ready-to-use bleaching agent.

[0169] The ready-to-use bleaching agents each had a viscosity in the range of 140,000 - 180,000 mPas, measured at 20°C.

[0170] Each ready-to-use bleaching agent was tested on a quarter of the head of hair on two people per bleaching powder. For this test, the test subject's hair was parted and divided into four application zones. The four different ready-to-use bleaching agents, each with developer #0x1 or #0x2, were applied to dry hair and rinsed out after a 45-minute processing time. The strands were then shampooed, followed by a 5-minute treatment with conditioner, which was also rinsed out, and finally dried.

[0171] Each test subject received a hair treatment according to the invention on one half of the head and a hair treatment not according to the invention on the other side of the head.

[0172] Table 4 summarizes the characteristics of the test subjects' hair:

[0173] Table 4: Hair characteristics of the test subjects

[0174] Test subject #1 was treated with the application mixtures, comprehensively #0x1.

[0175] Test subject #2 was treated with the application mixtures, comprehensively #0x2. During and after the completion of the lightening procedure, various criteria relating to handling and the lightening result were assessed on a rating scale from 1 to 5, where "5" is the best grade and "1" the worst grade.

[0176] Tables 5-1 to 5-4 summarize the evaluation for the two bleaching powders:

[0177] Table 5-1: White powder with additive (V), according to the invention Table 5-2: White powder without additive (V); not according to the invention

[0178] Table 5-3: blue powder with additive (V)

[0179] Table 5-4: blue powder without additive (V); not according to the invention

[0180] Only the application mixtures according to the invention with the additive according to Table 3 had a consistency and drying behavior that allowed precise application of the agent to the strands without the use of mechanical separating agents. The strands treated with the bleaching mixtures according to the invention could be laid down during the processing time without mechanical separating agents, without the bleaching mixture migrating to the untreated hair in a color-relevant quantity.

Claims

Patent claims 1. Free-flowing hair treatment product (V), containing, each based on its weight, - at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, in a total amount of 6.9–85 wt.%, preferably 10–80 wt.%, particularly preferably 15–75 wt.%, further particularly preferably 20–70 wt.%, extremely preferably 30–65 wt.%, further - 10 - 93 wt.%, preferably 15 - 80 wt.%, particularly preferably 20 - 60 wt.%, further particularly preferably 23 - 50 wt.%, extremely preferably 25 - 35 wt.% kaolin, further - at least one polysaccharide in a total amount of 0.1 - 5.0 wt.%, preferably 0.5 - 3.0 wt.%, particularly preferably 0.8 - 2.0 wt.%, extremely preferably 1.0 - 1.5 wt.%, furthermore - 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% free water, - other ingredients in a total quantity of 0 to a maximum of 7.0% by weight, - the hair treatment product does not contain an oxidizing agent.

2. Hair treatment composition according to claim 1, characterized in that the at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, is selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from light basic magnesium carbonate, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.

3. Hair treatment composition according to claim 1 or 2, characterized in that the at least one polysaccharide is selected from xanthan gum, cellulose, cellulose ethers of C1-C4 alcohols, cellulose esters, guar gum, alginic acids and their corresponding physiologically acceptable salts, alginates, agar agar, agarose, karaya gum, locust bean gum, gum arabic, pectins, dextrans and mixtures thereof, preferably selected from xanthan gum, the cellulose ethers of C1-C4 alcohols, particularly preferably selected from methylcelluloses, ethylcelluloses, hydroxyalkylcelluloses, in particular hydroxyethylcellulose and methylhydroxyalkylcelluloses, cellulose esters, preferably carboxymethylcelluloses, particularly preferably sodium carboxymethylcellulose, the INCI name of which is Cellulose Gum, their physiologically acceptable salts; and mixtures thereof.

4. Hair treatment composition according to one of claims 1-3, characterized in that the at least one polysaccharide is not starch, not a starch fraction, and not a starch derivative.

5. Hair treatment composition according to one of claims 1 - 4, characterized in that the at least one further ingredient is selected from oils, complexing agents, sequestrants, in particular sodium hexametaphosphate, furthermore hair conditioning agents and perfumes, as well as mixtures of these further ingredients.

6. Hair treatment composition according to claim 5, characterized in that at least one oil is contained in a total amount of 0.1 to 7 wt.%, preferably 0.2 to 5 wt.%, particularly preferably 0.5 to 4 wt.%, extraordinarily preferably 1.0 to 3.5 wt.%, in each case based on the weight of the hair treatment composition.

7. Hair treatment composition according to claim 5 or 6, characterized in that it contains 0.1 to 2.0 wt.%, preferably 0.2 to 1.0 wt.%, particularly preferably 0.3 to 0.8 wt.%, extraordinarily preferably 0.4 to 0.6 wt.%, sodium hexametaphosphate, in each case based on the weight of the hair treatment composition.

8. Multi-component packaging unit (kit-of-parts) for lightening keratinous fibers, comprising at least three separately packaged components, characterized in that i) the first component (V) is a free-flowing hair treatment agent according to any one of claims 1-7, ii) the second component (B) is an oxidative hair lightening agent comprising a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, each based on the weight of the oxidative hair lightening agent, iii) the third component (Ox) is an oxidation composition comprising, each based on its weight, 50- 96 wt.%, preferably 70 - 93 wt.%.-%, particularly preferably 80-90 wt.-% water and 0.5-20 wt.% hydrogen peroxide and furthermore contains at least one pH adjuster in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably present in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40) to each other.

9. A method for lightening or lightening keratinous fibers, in particular human hair, characterized in that a free-flowing hair treatment agent (V) according to any one of claims 1-7 is mixed with an oxidative hair lightening agent (B) comprising: a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, and mixtures of these salts; b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar; c) furthermore, at least one complexing agent; and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, each based on the weight of the oxidative hair lightening agent; and with an oxidation composition (Ox) which, each based on its weight, comprises 50-96 wt.%, preferably 70-93 wt.%, particularly preferably 80-90 wt.% water. wt.%, water and 0.5 - 20 wt.-% hydrogen peroxide and further contains at least one pH adjuster in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, this mixture is applied directly, preferably within 10 seconds to 15 minutes after its preparation, to the keratin-containing fibers and. The solution is left on the fibers for 5 to 60 minutes, and the fibers are then rinsed with water and optionally washed with a surfactant-containing cleaning agent, wherein the components (V), (B) and (Ox) are preferably mixed together in a weight ratio (V) : (B) : (Ox) of (1-10) : (10 - 30) : (20 - 50), more preferably (3 - 7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

10. Aqueous ready-to-use composition for the oxidative lightening or lightening of keratin fibers, in particular hair, comprising three components which are mixed together before application to the keratin fibers, comprising i) a free-flowing hair treatment agent (V) according to any one of claims 1-7, ii) an oxidative hair lightening agent (B) comprising a) at least one oxidizing agent selected from the inorganic salts of a peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and iii) an oxidation composition (Ox) comprising, in each case based on its weight, 50 - 96 wt.%, preferably 70 - 93 wt.%, particularly preferably 80 - 90 wt.%.-%, water and 0.5 - 20 wt% hydrogen peroxide and at least one pH adjuster. in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably contained in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

11. Composition according to claim 10, characterized in that the mixture of the hair treatment agent (V) according to one of claims 1-7, the oxidative hair lightening agent (B) and the oxidation composition (Ox), optionally after the addition of a fourth alkalizing component (Alk), has a pH value of 8.0 to 11.5, preferably in the range of 8.5 to 11.0, particularly preferably 9.0-10.5, and most preferably 9.5-10.3, each measured at 20°C.

12. Use of a free-flowing hair treatment agent (V) according to any one of claims 1-7 for thickening an aqueous ready-to-use composition for oxidative lightening or lightening of keratin fibers, in particular hair, comprising i) an oxidative hair lightening agent (B) containing a) at least one oxidizing agent selected from the inorganic salts of peroxosulfuric acid, and mixtures of these salts, b) at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, c) furthermore at least one complexing agent, and d) 0 to 10 wt.%, preferably 0.1 to 8 wt.%, particularly preferably 0.5 to 5 wt.% water, in each case based on the weight of the oxidative hair lightening agent, and ii) an oxidation composition (Ox) comprising, in each case based on its weight, 50-96 wt.%, preferably 70-93 wt.%, particularly preferably 80 - 90 wt.%, water and 0.5 - 20 wt.containing -% hydrogen peroxide and further containing at least one pH adjusting agent in such an amount that the oxidation composition has a pH value in the range of 1.5 to 5.5, measured at 20°C, wherein the components (V), (B) and (Ox) are preferably contained in a weight ratio (V) : (B) : (Ox) of (1-10) : (10-30) : (20-50), more preferably (3-7) : (15-25) : (25-45), particularly preferably (4-6) : (18-22) : (30-40).

13. Multi-component packaging unit (kit-of-parts) according to claim 8, method according to claim 9, aqueous ready-to-use composition according to claim 10 or 11 or use according to claim 12, characterized in that the oxidative hair lightening agent (B) does not contain kaolin.

14. Multi-component packaging unit (kit-of-parts) according to claim 8 or 13, method according to claim 9 or 13, aqueous ready-to-use composition according to one of claims 10, 11 or 13 or use according to claim 12 or 13, characterized in that both the hair treatment agent (V) and the oxidative hair lightening agent (B) each contain at least one inorganic alkalizing agent, solid at 20 °C and 1013 mbar, selected from magnesium hydroxide carbonates, preferably selected from magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 ■ 2 H2O and magnesium hydroxide carbonates having the formula MgCOs ■ Mg(OH)2 as well as mixtures of these magnesium hydroxide carbonates, or preferably selected from mixtures of heavy basic magnesium carbonate and light basic magnesium carbonate.

15. Multi-component packaging unit (kit-of-parts) according to claim 8, 13 or 14, method according to claim 9, 13 or 14, aqueous ready-to-use composition according to any one of claims 10, 11, 13 or 14 or use according to any one of claims 12 to 14, characterized in that the hair treatment agent (V) contains heavy basic magnesium carbonate and the oxidative hair lightening agent (B) contains light basic magnesium carbonate or the hair treatment agent (V) contains light basic magnesium carbonate and the oxidative hair lightening agent (B) contains heavy basic magnesium carbonate.

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