Method for dyeing keratin fibers, involving the process of applying an oxidative pre-treatment agent and a dyeing agent comprising silane and a pigment

Abstract

The invention relates to a method for dyeing keratinous fibers, in particular human hair, having the following steps: - applying a pre-treatment agent (V) onto the keratinous fibers, said pre-treatment agent (V-1) containing at least one oxidation agent from the group consisting of carbamide peroxide, potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate, and - applying a dyeing agent (F) onto the keratinous fibers, said dyeing agent containing (F-1) at least one organic a silicon compound of the group of silanes with one, two, or three silicon atoms and (F-2) at least one pigment.

Description

[0001] Henkel AG & Co. KGaA 2023P00097WO Process for coloring keratin fibers comprising the application of an oxidative pretreatment agent and a coloring agent with silane and pigment The present application relates to a cosmetic process for coloring keratin fibers, in particular human hair, which comprises the application of at least two different agents (V) and (F). The agent (V) is a pretreatment agent which contains at least one oxidizing agent in a cosmetic carrier. The coloring agent (F) contains at least one silane with one, two or three silicon atoms (F-1) and at least one pigment (F-2) in a cosmetic carrier. The modification of the shape and color of keratin material, in particular human hair, represents an important area of ​​modern cosmetics. The skilled person is familiar with various coloring systems for changing hair color, depending on the coloring requirements.For permanent, intensive colorings with good fastness properties and good gray coverage, oxidation dyes are typically used. These dyes contain oxidation dye precursors, so-called developer components and coupler components, which, under the influence of oxidizing agents such as hydrogen peroxide, form the actual dyes. Oxidation dyes are characterized by very long-lasting coloring results. When using direct dyes, the fully formed dyes diffuse from the dye into the hair fiber. Compared to oxidative hair coloring, the colors obtained with direct dyes are less durable and wash out more quickly. Colorations with direct dyes typically remain on the hair for between 5 and 20 washes.The use of color pigments is known for temporary color changes on hair and / or skin. Color pigments are generally understood to be insoluble, color-imparting substances. These are present undissolved in the form of small particles in the coloring formulation and are deposited only externally on the hair fibers and / or the skin surface. Therefore, they can usually be removed completely after a few washes with surfactant-containing cleansers. Various products of this type are available on the market under the name hair mascara. Coloring with pigments offers several key advantages. Because the pigments only attach themselves externally to the keratin fibers, especially the hair fibers, unwanted coloring can be removed quickly and easily without leaving any residue, thus offering the user the opportunity to return to their original hair color immediately and without great effort.This coloring process is therefore particularly attractive for consumers who do not wish to regularly recolor their hair. Despite these many advantages, the pigment-based coloring system still has some disadvantages, which are due to the pigments' limited penetration into the keratin material. Since the pigments do not diffuse into the keratin fibers, but rather merely deposit themselves on the outside of the fiber in the form of a shell or film, the washfastness of the colors produced with this system still requires improvement. Various studies have attempted to bond the pigment(s) more permanently to the surface of the hair using film-forming materials, usually polymers. The coloring processes described in EP 2168633 B1 utilize organosilicon compounds from the silane group, with the molecular structure of these silanes comprising at least one hydroxyl group and / or hydrolyzable group.Due to the presence of hydroxyl groups or hydrolyzable groups, silanes are reactive substances that hydrolyze, oligomerize, or polymerize in the presence of water. The oligomerization or polymerization of the silanes, initiated by the presence of water, ultimately leads to the formation of a film when applied to the keratin material, which fixes the color-providing compounds and thus produces very long-lasting colorations. However, a closer examination of the coloring processes disclosed in EP 2168633 B1 has shown that the colorations produced on hair using these agents or processes still require improvement. In particular, the color intensity and abrasion of the colorations from the hair still need to be optimized, and the durability, especially the washfastness of these colorations, also requires further improvement.Various studies have already been conducted to improve the washfastness of dyes produced with silanes and pigments, including investigating the effectiveness of various pretreatment agents. For example, WO 2022 / 184357 A1 attempted to improve washfastness by pretreating with an enzyme from the lipase group, and WO 2022 / 184337 A1 used a pretreatment agent containing hydrogen peroxide. However, further studies on WO 2022 / 184337 A1 revealed that the oxidative pretreatment, which was carried out here with an aqueous hydrogen peroxide solution, also resulted in hair lightening and damage. This can be particularly disadvantageous if the user resorts to pigment-based dyes because they want to avoid hair lightening and damage.The object of the present invention was to find a process for coloring keratin fibers such as hair, with which the pigments can be fixed to the hair in an extremely permanent manner. The colorants should deliver high color intensities and possess very good fastness properties, in particular, outstanding washfastness. Furthermore, an even and long-lasting color should be achieved both at the roots and at the ends of the hair, and the hair should be lightened and damaged as little as possible by the coloring process. Ideally, the hair should not be damaged at all by the application of the colorant. Furthermore, a uniform color result should be achieved across the entire length of the keratin fiber, regardless of the degree of damage.Surprisingly, it has now been found that the washfastness of dyed keratin fibers could be massively improved if the dyeing was carried out with a pigment and a silane and the keratin fibers were pretreated with at least one oxidizing agent from the group of carbamide peroxide and persulfates before application of the dye.A first aspect of the present invention is a method for coloring keratin fibers, in particular human hair, comprising the following steps: - applying a pretreatment agent (V) to the keratin fibers, wherein the pretreatment agent (V-1) contains at least one oxidizing agent from the group consisting of carbamide peroxide, potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate, and - applying a coloring agent (F) to the keratin fibers, wherein the coloring agent (F-1) contains at least one organic silicon compound from the group consisting of silanes having one, two, or three silicon atoms, and (F-2) contains at least one pigment. The work leading to this invention has shown that particularly intense and washfast color results could be achieved on hair when the hair was colored by successive application of the two agents (V) and (F).What was particularly surprising here was that the pretreatment (V) improved the washfastness of the colorant (F), but did not visibly lighten or damage the hair. The leveling of the color result was also greatly improved in this way. Keratin fibers Keratin fibers are understood to mean hair, wool and fur. Keratin fibers are most preferably understood to mean human hair. Coloring agents The term “coloring agent” is used in the context of this invention for the coloring of keratin fibers, in particular hair, brought about by the use of pigments. During this coloring, the pigments are deposited as color-imparting compounds in a homogeneous, uniform and smooth film on the surface of the keratin material. The film is formed by the silane(s).Pretreatment agent (V) Before applying the coloring agent (F), in the process according to the invention, the pretreatment agent (V) is applied to the keratin fibers, in particular the hair. The pretreatment agent described below is the ready-to-use pretreatment agent which can be applied directly to the keratin fibers or hair in the form in which it is present. Oxidizing agent (V-1) in the pretreatment agent (V) The pretreatment agent (V) contains at least one oxidizing agent (V-1) from the group consisting of carbamide peroxide, potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate. Carbamide peroxide is the adduct of hydrogen peroxide and urea, which is commercially available, for example, in the form of a white crystal powder. It is a water-soluble crystalline adduct which can be formed during the recrystallization of urea with 30% hydrogen peroxide solution.Carbamide peroxide is also referred to in the literature as urea-hydrogen peroxide adduct, urea peroxide, perhydrite, percarbamide, or urea peroxide. Carbamide peroxide has the molecular formula CH6N2O3 and bears the CAS number 124-43-6. Carbamide peroxide can be purchased commercially, for example, from Thermo Scientific. Ammonium peroxodisulfate, which can also be referred to as ammonium persulfate, refers to the persulfate with the molecular formula (NH4)2S2O8. Potassium peroxodisulfate, which can also be referred to as potassium persulfate, refers to the persulfate with the molecular formula K2S2O8. Sodium peroxodisulfate, which can also be referred to as sodium persulfate, refers to the persulfate with the molecular formula Na2S2O8.The process according to the invention is characterized in that the pretreatment agent (V) contains one or more oxidizing agents (V-1) from the group consisting of carbamide peroxide, potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate. During the work leading to this invention, it was found that a significant and effective improvement in washfastness could be achieved, particularly when a pretreatment agent (V) containing a combination of different oxidizing agents was used in the process according to the invention. Particularly good results were obtained when using a pretreatment agent (V) containing the combination of carbamide peroxide (V-11) and at least one peroxodisulfate (V-12) from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate, and sodium peroxodisulfate.Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) at least one peroxodisulfate from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate. Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) ammonium peroxodisulfate. Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) potassium peroxodisulfate.Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) sodium peroxodisulfate. Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) ammonium peroxodisulfate and potassium peroxodisulfate. Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) ammonium peroxodisulfate and sodium peroxodisulfate. Within the scope of a further particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) potassium peroxodisulfate and sodium peroxodisulfate.In another particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains (V-11) carbamide peroxide and (V-12) ammonium peroxodisulfate, potassium peroxodisulfate, and sodium peroxodisulfate. According to the invention, the oxidative cosmetic pretreatment agent can additionally contain at least one catalyst as an optional constituent, which activates the oxidation of the substrate, such as, for example, the melanin present in the keratin material. Such catalysts are, for example, metal ions, iodides, quinones, or certain enzymes. Suitable metal ions are, for example, Zn. 2+ , Cu 2+ , Fe 2+ , Fe 3+ , Mn 2+ , Mn 4+ , Li + , Mg 2+ , Ca 2+ and Al 3+ Zn 2+ , Cu 2+ and Mn 2+. The metal ions can in principle be used in the form of any physiologically acceptable salt or in the form of a complex compound. Preferred salts are acetates, sulfates, halides, lactates and tartrates. Suitable enzymes are, for example, peroxidases, which can significantly enhance the effect of small amounts of hydrogen peroxide. Furthermore, enzymes that generate small amounts of hydrogen peroxide in situ with the aid of atmospheric oxygen and thus biocatalytically activate the oxidation of the dye precursors are suitable according to the invention. Particularly suitable catalysts for the oxidation of dye precursors are the so-called 2-electron oxidoreductases in combination with the specific substrates, e.g. - pyranose oxidase and e.g.D-glucose or galactose, - glucose oxidase and D-glucose, - glycerol oxidase and glycerol, - pyruvate oxidase and pyruvic acid or their salts, - alcohol oxidase and alcohol (MeOH, EtOH), - lactate oxidase and lactic acid and their salts, - tyrosinase oxidase and tyrosine, - uricase and uric acid or their salts, - choline oxidase and choline, - amino acid oxidase and amino acids. By selecting the appropriate quantity ranges of oxidizing agent(s) (V-1) (or (V-11) and (V-12)) in the pretreatment agent (V), the extent of the influence that the pretreatment agent (V) has on the washfastness of the subsequently applied dye (F) can be specifically controlled. In this context, it has been shown that the higher the amount of oxidizing agent used in the pretreatment agent (V), the better the washfastness. On the other hand, however, the damage to the keratin material or the keratin fibers / hair also increases with the amount of oxidizing agent used.To achieve the optimal balance between these two effects, it has proven particularly preferable to use the oxidizing agent(s) in the pretreatment agent in very specific quantity ranges. The pretreatment agent (V) according to the invention preferably contains—based on the total weight of the pretreatment agent (V)—0.1 to 30.0 wt. %, preferably 3.0 to 25.0 wt. %, more preferably 6.0 to 20.0 wt. %, and very particularly preferably 8.0 to 17.0 wt. % of carbamide peroxide (V-11). The pretreatment agent (V) according to the invention preferably contains - based on the total weight of the pretreatment agent (V) - one or more peroxodisulfates from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate in a total amount of 0.1 to 40.0 wt.%, preferably 3.0 to 30 wt.%, more preferably 6.0 to 20.0 wt.% and most preferably 9.0 to 17.0 wt.%.Within the scope of a further very particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - contains (V-11) 0.1 to 30.0 wt.%, preferably 3.0 to 25.0 wt.%, more preferably 6.0 to 20.0 wt.% and most preferably 8.0 to 17.0 wt.% carbamide peroxide, and (V-12) one or more peroxodisulfates from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate in a total amount of 0.1 to 40.0 wt.%, preferably 3.0 to 30 wt.%, more preferably from 6.0 to 20.0 wt.% and most preferably from 9.0 to 17.0 wt.%. Cosmetic carrier of the pretreatment agent (V) The oxidizing agent(s) (V-1) (or (V-11) and (V-12)) are preferably contained in a cosmetic carrier in the pretreatment agent (V).In principle, various carriers are conceivable as cosmetic carriers for the pretreatment agent (V), such as, for example, an aqueous, alcoholic, or aqueous-alcoholic carrier. The carrier can also be a cream, emulsion, a paste, or even a surfactant-containing foaming solution, such as, for example, a shampoo, foam aerosol, a foam formulation, or other preparations suitable for application to the hair. Water is the most common solvent in cosmetic products; therefore, in principle, water can also be used as the main component as a cosmetic carrier. However, the work leading to this invention has shown that the nature of the cosmetic carrier in the pretreatment agent (V) can have a major influence on the lightening and damage associated with the use of the oxidizing agent(s).If, for example, the combination of carbamide peroxide (V-11) and peroxodisulfates (V-12) was used in pretreatment agents (V) with a very high water content, increased lightening and, associated with this, greater hair damage was observed. The improvement in the washfastness of the pigment coloration was indeed achieved with the process according to the invention, but the hair was also damaged more severely. Surprisingly, the hair damage could be massively reduced by using a cosmetic carrier with a higher solvent content. It is assumed that the presence of the solvent either slows down the dissolution or decomposition of the carbamide peroxide or inhibits the reaction of carbamide peroxide with persulfates to such an extent that the inner part (i.e. the cortex) of the hair is less oxidatively changed, while the surface orThe cuticle is nevertheless sufficiently modified so that pigment-containing films can adhere better there. It was also surprising that this approach reduced hair damage without compromising the washfastness of the dyes. Solvents from the group consisting of glycerin, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1-C6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate, and glycerol carbonate have proven particularly suitable.In a further preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) comprises at least one solvent from the group consisting of glycerol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1. -CContains 6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate, and glycerol carbonate. Glycerin is also known as 1,2,3-propanetriol and has the CAS number 56-81-5. Phenoxyethanol has the CAS number 122-99-6. 1,2-Propylene glycol is also known as 1,2-propanediol and has the CAS numbers 57-55-6 [(RS)-1,2-dihydroxypropane], 4254-14-2 [(R)-1,2-dihydroxypropane], and 4254-153 [(S)-1,2-dihydroxypropane]. 1,3-Propylene glycol is also known as 1,3-dihydroxypropane or 1,3-propanediol and has the CAS number 504-63-2. 1,2-Butylene glycol can also be referred to as 1,2-butanediol and has the CAS numbers 584-03-2 (racemate), 40348-66-1 ((R)-enantiomer), and 73522-17-5 ((S)-enantiomer). Dipropylene glycols (or oxydipropanols) form a group of substances derived from glycol ethers. The group of dipropylene glycols includes 1,2-oxydi-1-propanol with CAS No.108-61-2, ^^^ƍ-Oxydi-2-propanol with CAS No. 110-98-5 and 2-(2-Hydroxypropoxy)-1-propanol with CAS No. 106-62-7. The mixture of these three isomers has CAS No. 25265-71-8. Ethanol has CAS No. 64-17-5. Isopropanol is alternatively called 2-propanol and has CAS No. 67-63-0. Ethylene glycol is alternatively called 1,2-ethanediol and has CAS No. 107-21-1. Diethylene glycol monoethyl ether can also be called ethoxydiglycol or ethyldiglycol or 2-(2-ethoxyethoxy)ethanol and has CAS No. 111-90-0. Benzyl alcohol can also be referred to as phenylmethanol and has the CAS number 100-51-6. Dimethyl carbonate or dimethyl carbonate has the CAS number 616-38-6. Diethyl carbonate or diethyl carbonate has the CAS number 105-58-8.Propylene carbonate, or alternatively 4-methyl-1,3-dioxolan-2-one, is a clear, colorless, and highly mobile liquid with the CAS numbers 108-32-7 [(RS)-4-methyl-1,3-dioxolan-2-one], 51260-39-0 [(S)-4-methyl-1,3-dioxolan-2-one], and 16606-55-6 [(R)-4-methyl-1,3-dioxolan-2-one]. Glyceryl carbonate, or alternatively glycerol-1,2-carbonate, is formally the cyclic ester of carbonic acid with glycerol and has the CAS number 931-40-8. The solvent(s) are preferably used in the pretreatment agent (V) in amounts that are sufficiently high to slow down the dissolution or interaction of the carbamide peroxide and / or the persulfates, but on the other hand are so low that the product is not excessively polluted with solvents.The pretreatment agent (V) preferably contains - based on the total weight of the pretreatment agent (V) - one or more solvents from the group consisting of glycerol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1-C6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate and glycerol carbonate in a total amount of 3.0 to 80 wt.%, preferably from 5.0 to 60.0 wt.%, more preferably from 9.0 to 40.0 wt.% and most preferably from 12.0 to 25.0 wt.%.In a further very particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - contains one or more solvents from the group consisting of glycerol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1-C6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate and glycerol carbonate in a total amount of 3.0 to 80 wt.%, preferably from 5.0 to 60.0 wt.%, more preferably from 9.0 to 40.0 wt.% and very particularly preferably from 12.0 to 25.0 wt.%. Most preferably, the pretreatment agent (V) contains glycerin and 1,2-propylene glycol.Explicitly and particularly preferably, the pretreatment agent (V) contains – based on the total weight of the pretreatment agent (V) – 12.0 to 25.0 wt.% glycerol and 1.0 to 7.0 wt.% 1,2-propylene glycol. Instead of or in addition to the aforementioned solvents, the pretreatment agent (V) can also contain one or more polyalkylene glycols. The polyalkylene glycols reduce the polarity of the cosmetic carrier. With an increase in the proportion of polyalkylene glycol(s) in the pretreatment agent (V), a reduction in hair damage and lightening of the pretreated keratin fibers was also observed. In this way, with the subsequent application of the colorant (F), the washfastness and uniformity of the colorations could be improved without excessively damaging the keratin fibers and without lightening their original hair color. In this context, it is assumed that the dissolution of the carbamide peroxide orwhose reaction with the persulfates is also reduced by the polyalkylene glycols and the oxidizing agents thus react with a time delay or only with the surface of the keratin fiber. Polyalkylene glycols that are particularly suitable according to the invention are, for example, ethylene glycols of the formula (EG) (EG), where x is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100 and very particularly preferably an integer from 5 to 30. The ethylene glycols of the formula (EG) are protic substances with at least one hydroxyl group which, due to their repeating unit -CH2-CH2-O-, provided x is a value of at least 2, can also be referred to as polyethylene glycols. In the alkylene glycols of the formula (EG), x is an integer from 1 to 10,000. Depending on their chain length, polyethylene glycols are liquid or solid, water-soluble polymers.Polyethylene glycols with a molecular weight between 200 g / mol and 400 g / mol are non-volatile liquids at room temperature. PEG 600 has a melting range of 17 to 22 °C and thus a paste-like consistency. With molecular weights above 3000 g / mol, the PEGs are solid substances and are marketed as flakes or powders. The use of low-molecular-weight alkylene glycols (or polyethylene glycols) has proven particularly suitable for achieving the object of the invention. For low-molecular-weight alkylene glycols (or polyethylene glycols) within the meaning of the present invention, x represents an integer from 1 to 100, preferably an integer from 1 to 80, more preferably an integer from 2 to 60, even more preferably an integer from 3 to 40, even more preferably an integer from 4 to 20, and most preferably an integer from 6 to 15.A particularly preferred low-molecular-weight polyethylene glycol is, for example, PEG-8. PEG-8 comprises an average of 8 ethylene glycol units (x = 8), has an average molecular weight of 400 g / mol, and bears the CAS number 25322-68-3. PEG-8 is alternatively referred to as PEG 400 and is commercially available, for example, from APS. Other suitable low-molecular-weight polyethylene glycols include PEG-6, PEG-7, PEG-9, and PEG-10. Another suitable polyethylene glycol is, for example, PEG-32. PEG-32 comprises 32 ethylene glycol units (x = 32), has an average molecular weight of 1500 g / mol, and bears the CAS number 25322-68-3. PEG-32 is alternatively referred to as PEG 1500 and can be purchased commercially, for example, from Clariant.The polyalkylene glycol(s), in particular the polyethylene glycols of formula (EG), are preferably used in the pretreatment agent (V) in amounts that are sufficiently high to slow the dissolution or interaction of the carbamide peroxide, but at the same time are low enough that the product is not excessively polluted with solvents. The pretreatment agent (V) preferably contains—based on the total weight of the pretreatment agent (V)—one or more ethylene glycols of formula (EG) in a total amount of 1.0 to 80 wt.%, preferably 1.5 to 60.0 wt.%, more preferably 3.0 to 40.0 wt.%, and most preferably 4.5 to 10.0 wt.%.In a further very particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - contains one or more ethylene glycols of the formula (EG-V) in a total amount of 1.0 to 80.0 wt.%, preferably 1.5 to 60.0 wt.%, more preferably 3.0 to 40.0 wt.% and very particularly preferably 4.5 to 10.0 wt.%. (EG-V), where x is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100 and most preferably an integer from 5 to 30. Most preferably, the pretreatment agent (V) contains at least one solvent from the group described above and at least one polyethylene glycol of the formula (EG-V).In a further particularly preferred embodiment, the pretreatment agent (V) according to the invention contains - one or more solvents from the group consisting of glycerol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1-C6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate and glycerol carbonate, and - one or more ethylene glycols of the formula (EG-V) (EG-V) described above, where x is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100 and most preferably an integer from 5 to 30. In order to inhibit the decomposition of the oxidizing agents, especially carbamide peroxide,In order to stabilize the oxidizing agents, it has further proven to be very particularly preferred to set the water content in the pretreatment agent to a medium to low range. It is therefore particularly advantageous if the pretreatment agent (V) contains - based on the total weight of the pretreatment agent (V) - 5.0 to 70.0 wt.%, preferably 10.0 to 60.0 wt.%, more preferably 15.0 to 50.0 wt.% and very particularly preferably 20.0 to 40.0 wt.% water. In a further very particularly preferred embodiment, a process according to the invention is characterized in that the pretreatment agent (V) contains - based on the total weight of the pretreatment agent (V) 5.0 to 70.0 wt.%, preferably 10.0 to 60.0 wt.%, more preferably 15.0 to 50.0 wt.% and very particularly preferably 20.0 to 40.0 wt.% water.Colorant (F) Following the application of the pretreatment agent (V), the colorant (F) is then applied to the keratin material in the process according to the invention. The colorant (F) contains at least one organic silicon compound from the group of silanes with one, two, or three silicon atoms (F-1) and at least one pigment (F-2). Organic silicon compounds from the group of silanes (F1) in the colorant As the first ingredient (F-1) essential to the invention, the colorant contains at least one organic silicon compound from the group of silanes with one, two, or three silicon atoms. According to IUPAC rules, the term silane stands for a group of chemical compounds based on a silicon skeleton and hydrogen. In organic silanes, the hydrogen atoms are fully or partially replaced by organic groups such as (substituted) alkyl groups and / or alkoxy groups.In the organic silanes, some of the hydrogen atoms can also be replaced by hydroxyl groups. Particularly suitable silanes (F-1) are the silanes of the formula (I) R1R2N-L-Si(OR3)a(R4)b (I), where: - R1, R2 independently of one another represent a hydrogen atom or a C1-C6 alkyl group, - L represents a linear or branched, divalent C1-C20 alkylene group, - R3 represents a hydrogen atom or a C1-C6 alkyl group, - R4 represents a C1-C6 alkyl group, - a represents an integer from 1 to 3, and - b represents the integer 3 - a. In a further very particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I) and / or condensation products thereof, R1R2N-L-Si(OR3). a (R4) b(I), where - R1, R2 independently of one another represent a hydrogen atom or a C1-C6 alkyl group, - L represents a linear or branched, divalent C1-C20 alkylene group, - R3 represents a hydrogen atom or a C1-C6 alkyl group, - R4 represents a C1-C6 alkyl group, - a represents an integer from 1 to 3, and - b represents the integer 3 - a. The substituents R1, R2, R3, R4 and L in the compounds of formula (I) and (II) are exemplified below: Examples of a C1-C6 alkyl group are the groups methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl and t-butyl, n-pentyl and n-hexyl. Propyl, ethyl and methyl are preferred alkyl radicals. Examples of a C2-C6 alkenyl group are vinyl, allyl, but-2-enyl, but-3-enyl, and isobutenyl. Preferred C2-C6 alkenyl radicals are vinyl and allyl. Examples of a linear divalent C1-C 20 - Alkylene groups are, for example, the methylene group (-CH2-), the ethylene group (-CH2 -CH 2-), die Propylene group (-CH2-CH2-CH2-) and the butylene group (-CH2-CH2-CH2-CH2-). The propylene group (-CH2-CH2-CH2-) is particularly preferred. Starting with a chain length of 3 carbon atoms, divalent alkylene groups can also be branched. Examples of branched, divalent C3-C 20 - Alkylene groups are (-CH2-CH(CH3)-) and (-CH2-CH(CH3)-CH2-). In the organic silicon compounds of formula (I) R1R2N-L-Si(OR3) a (R4) b (I), the radicals R1 and R2 independently of one another represent a hydrogen atom or a C1-C6 alkyl group. Most preferably, the radicals R1 and R2 both represent a hydrogen atom. In the middle part of the organic silicon compound is the structural unit or linker -L-, which represents a linear or branched, divalent C1 -C 20 -alkylene group.A divalent C1-C20 alkylene group can alternatively also be defined as a divalent or divalent C1- C 20-alkylene group, which means that each group L can form two bonds. One bond is from the amino group R1R2N to the linker L, and the second bond is between the linker L and the silicon atom. Preferably, -L- represents a linear, divalent (i.e., divalent) C1-C 20 -Alkylene group. More preferably, -L- represents a linear divalent C1-C6-alkylene group. More preferably, -L- represents a methylene group (-CH2-), an ethylene group (-CH2-CH2-), a propylene group (-CH2-CH2-CH2-) or a butylene group (-CH2-CH2-CH2-CH2-). Most preferably, L represents a propylene group (-CH2-CH2-CH2-). The linear propylene group (-CH2-CH2-CH2-) can alternatively also be referred to as a propane-1,3-diyl group. The organic silicon compounds of the formula (I) R1R2N-L-Si(OR3)a(R4)b (I) each carry the silicon-containing group -Si(OR3) at one end. a (R4) b.In the terminal structural unit -Si(OR3)a(R4)b, the radical R3 represents a hydrogen atom or a C1-C6 alkyl group, and the radical R4 represents a C1-C6 alkyl group. Particularly preferably, R3 and R4 independently represent a methyl group or an ethyl group. Here, a represents an integer from 1 to 3, and b represents the integer 3 – a. If a represents the number 3, then b is 0. If a represents the number 2, then b is 1. If a represents the number 1, then b is 2. If the index number a represents the number 2 or 3, multiple OR3 units are present in the silane molecule of formula (I). In this case, the radical R3 in each of the OR3 units can be chosen independently of the other OR3 units. For example, if a stands for the number 3, the silane molecule comprises three OR3 units, of which, for example, one unit can represent a hydroxy group and two units can represent an ethoxy group.Particularly resistant films could be produced when the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I), in which, independently of one another, the radical R3 represents a hydrogen atom, a methyl group, or an ethyl group, and the radical R4 represents a methyl group or an ethyl group. When using the process for coloring human hair, colorations with the best washfastness properties could be obtained when the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I), in which, independently of one another, - the radical R3 represents a hydrogen atom, a methyl group, or an ethyl group, and - the radical R4 represents a methyl group or an ethyl group. Furthermore, colorations with the best washfastness properties could be obtained when the colorant (F) contains at least one organic silicon compound of the formula (I), in which the radical a represents the number 3.In this case, the radical b stands for the number 0. In a further preferred embodiment, the colorant (F) used in the process is characterized in that it contains at least one organic silicon compound (F-1) of the formula (I), where - R3 stands for a hydrogen atom, a methyl group or an ethyl group, and - R4 stands for a methyl group or an ethyl group, and - a stands for the number 3, and - b stands for the number 0. Organic silicon compounds of the formula (I) which are particularly suitable for achieving the object according to the invention are - (3-aminopropyl)triethoxysilane. - (3-Aminopropyl)trimethoxysilane - (2-Aminoethyl)triethoxysilane - (2-Aminoethyl)trimethoxysilane - (3-Dimethylaminopropyl)triethoxysilane - (3-Dimethylaminopropyl)trimethoxysilane 1-(3-Dimethylaminopropyl)silanetriol - (2-Dimethylaminoethyl)trimethoxysilane and 1-(2-Dimethylaminoethyl)silanetriol In a further preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I) which is selected from the group consisting of - (3-aminopropyl)triethoxysilane - (3-aminopropyl)trimethoxysilane - 1-(3-aminopropyl)silanetriol - (2-aminoethyl)triethoxysilane - (2-aminoethyl)trimethoxysilane - 1-(2-aminoethyl)silanetriol - (3-dimethylaminopropyl)triethoxysilane - (3-dimethylaminopropyl)trimethoxysilane - 1-(3-dimethylaminopropyl)silanetriol - (2-dimethylaminoethyl)triethoxysilane. - (2-dimethylaminoethyl)trimethoxysilane and / or their condensation products. The aforementioned organic silicon compounds of the formula (I) are commercially available. For example, (3-Aminopropyl)trimethoxysilane can be purchased from Sigma-Aldrich. (3-Aminopropyl)triethoxysilane is also commercially available from Sigma-Aldrich.In further dyeing experiments, it has been found to be particularly advantageous if the dyeing agent (F) used in the process additionally contained at least one organic silicon compound (F-1) of the formula (II) R5Si(OR6). k (R7) m (II). The organic silicon compound(s) of formula (II) can also be referred to as silanes of the alkylalkoxysilane or alkylhydroxysilane type, R5Si(OR6)k(R7)m (II), where - R5 represents a C1-C 18 -alkyl group, - R6 represents a hydrogen atom or a C1-C6-alkyl group, - R7 represents a C1-C6-alkyl group, - k represents an integer from 1 to 3, and - m represents the integer 3 - k. In a further preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (II) and / or condensation products thereof, R5Si(OR6)k(R7)m (II), where - R5 represents a C1-C 18-alkyl group, - R6 represents a hydrogen atom or a C1-C6-alkyl group, - R7 represents a C1-C6-alkyl group, - k represents an integer from 1 to 3, and - m represents the integer 3 – k. In the organic silicon compounds of the formula (II), the radical R5 represents a C1-C18-alkyl group. This C1-C18-alkyl group is saturated and can be linear or branched. Preferably, R5 represents a linear C1-C 18-Alkyl group. R5 preferably represents a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, an n-hexyl group, an n-octyl group, an n-dodecyl group, or an n-octadecyl group. R5 particularly preferably represents a methyl group, an ethyl group, an n-hexyl group, or an n-octyl group. In the organic silicon compounds of the formula (II), the radical R6 represents a hydrogen atom or a C1-C6 alkyl group. R6 particularly preferably represents a methyl group or an ethyl group. If the index number k represents the number 2 or 3, several OR6 units are present in the silane molecule of the formula (II). In this case, the radical R6 in each of the OR6 units can be selected independently of the other OR6 units. For example, if k represents the number 3, the silane molecule comprises three OR6 units, of which one unit can represent a hydroxy group and two units an ethoxy group.In the organic silicon compounds of form (II), the radical R7 represents a C1-C6 alkyl group. R7 particularly preferably represents a methyl group or an ethyl group. Furthermore, k represents an integer from 1 to 3, and m represents the integer 3 – k. If k represents the number 3, then m is 0. If k represents the number 2, then m is 1. If k represents the number 1, then m is 2. Particularly stable films, i.e. colorations with particularly good washfastness properties, could be obtained when a colorant (F) was used in the process which, in addition to the silane(s) (F-1) of formula (I), contained at least one organic silicon compound of formula (II) in which the radical k represents the number 3. In this case, the radical m represents the number 0. Organic silicon compounds of formula (II) which are particularly suitable for achieving the object according to the invention are - methyltrimethoxysilane. - Ethyltrimethoxysilane - Ethyltriethoxysilane - n-Octyltrimethoxysilane - n-octyltriethoxysilane - n-dodecyltrimethoxysilane and / or - n-Dodecyltriethoxysilane. n-octadecyltrimethoxysilane and / or n-octadecyltriethoxysilane. In a further preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (II) selected from the group consisting of: - methyltrimethoxysilane - methyltriethoxysilane - ethyltrimethoxysilane - ethyltriethoxysilane - propyltrimethoxysilane - propyltriethoxysilane - hexyltrimethoxysilane - hexyltriethoxysilane - octyltrimethoxysilane - octyltriethoxysilane - dodecyltrimethoxysilane, - dodecyltriethoxysilane, - octadecyltrimethoxysilane and - octadecyltriethoxysilane and / or their condensation products. It has been found to be preferred if the colorant (F) - based on the total weight of the colorant (F) - contained one or more organic silicon compounds of the formula (I) in a total amount of 0.1 to 20 wt.%, preferably 1 to 15 wt.% and particularly preferably 2 to 12 wt.%.It has been found to be preferred if the colorant (F) - based on the total weight of the colorant (F) - contained one or more organic silicon compounds of the formula (I) and the formula (II) in a total amount of 0.1 to 20 wt. %, preferably 1 to 15 wt. % and particularly preferably 2 to 12 wt. %. In a further particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) - based on the total weight of the colorant (F) - contains one or more organic silicon compounds (F-1) in a total amount of 0.1 to 20 wt. %, preferably 1 to 15 wt. % and particularly preferably 2 to 12 wt. %.In an explicitly particularly preferred embodiment, a method is characterized in that a coloring agent (F) is applied to the keratin fibers, which contains at least one organic silicon compound of the formula (I) selected from the group consisting of (3-aminopropyl)triethoxysilane and (3-aminopropyl)trimethoxysilane, and additionally contains at least one organic silicon compound of the formula (II) selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, hexyltrimethoxysilane and hexyltriethoxysilane. Oligomers and / or condensation products of the organosilicon compounds In the case of the previously described organic silicon compounds or silanes of the formulas (I) and (II), even the addition of small amounts of water leads to hydrolysis or oligomerization and / or polymerization. The extent of oligomerization orPolymerization depends on the amount of water that comes into contact with the silane(s) of formulas (I) or (II). The aim of the process according to the invention is that the formation of the colored film, i.e. the final polymerization starting from the silanes (F-1), takes place when the colorant (F) is already present on the keratin fibers. However, due to the high reactivity of the silanes (F-1), oligomerization or pre-condensation can already have taken place before the colorant (F) is applied, and the silanes can already be hydrolyzed, oligomerized or, to a small extent, polymerized in the colorant (F). For this reason, both the silanes of formulas (I) or (II) and their hydrolysis products, oligomers and / or condensation products can be present in the colorant (F). According to the invention, the term “silanes of formula (I) or(II)" also includes their hydrolysis products, oligomers, and / or condensation products. The corresponding hydrolysis products, oligomers, and / or condensation products are, for example, the following compounds: Hydrolysis of C1-C6-alkoxysilane of formula (I) with water (reaction scheme using the example of 3-aminopropyltriethoxysilane):. Depending on the amount of water used, the hydrolysis reaction can also take place several times per C1-C6 alkoxy silane used: Hydrolysis of C1-C6-alkoxysilane of formula (II) with water (reaction scheme using methyltrimethoxysilane as an example): OMe OMe CH 3Si OMe + H 2 O CH3 Si OH + MeOH OMe OMe Depending on the amount of water used, the hydrolysis reaction can also take place several times per C1-C6 alkoxy silane used: Possible condensation reactions are, for example (shown using the mixture (3-aminopropyl)triethoxysilane and methyltrimethoxysilane): and / or and / or and / or OMe OMe OMe OMe Si OH + Si OMe MeO Si O Si OMe + MeOHOMe OMe In the above exemplary reaction schemes, the condensation to form a dimer is shown in each case, however, further condensations to form oligomers with multiple silane atoms are also possible and preferred. A condensation product is understood to be a product formed by the reaction of at least two organic silicon compounds, each with at least one hydroxyl group or hydrolyzable group per molecule, with elimination of water and / or elimination of an alkanol. The condensation products can be, for example, dimers, but also trimers or oligomers, whereby the condensation products are in equilibrium with the monomers. Depending on the amount of water used or consumed in the hydrolysis, the equilibrium shifts from monomeric organic silicon compounds to condensation product. Particularly good results have been obtainedif organic silicon compounds of the formula (I) and (II) were used in the process. Since, as already described above, hydrolysis / condensation begins even with traces of moisture, the hydrolysis and / or condensation products of the organic silicon compounds (I) and (II) are also encompassed by this embodiment. Pigments (F-2) in the Colorant (F) As a second constituent essential to the invention, the colorant (F) used in the process according to the invention contains at least one pigment. Pigments in the sense of the present invention are understood to be color-imparting compounds which have a solubility in water at 25 °C of less than 0.5 g / L, preferably less than 0.1 g / L, even more preferably less than 0.05 g / L. The water solubility can be determined, for example, using the method described below: 0,5 g of the pigment are weighed into a beaker. A stir bar is added. Then, one liter of distilled water is added. This mixture is heated to 25 °C for one hour while stirring on a magnetic stirrer. If undissolved components of the pigment are still visible in the mixture after this period, the solubility of the pigment is below 0.5 g / L. If the pigment-water mixture cannot be visually assessed due to the high intensity of the possibly finely dispersed pigment, the mixture is filtered. If a portion of undissolved pigment remains on the filter paper, the solubility of the pigment is below 0.5 g / L. Suitable color pigments can be of inorganic and / or organic origin. In a preferred embodiment, a colorant (F) according to the invention is characterized in thatthat it contains at least one coloring compound (F-2) from the group of inorganic and / or organic pigments. In a preferred embodiment, a colorant (F) according to the invention is characterized in that it contains at least one inorganic and / or organic pigment (F-2). Preferred color pigments are selected from synthetic or natural inorganic pigments. Inorganic color pigments of natural origin can be produced, for example, from chalk, ochre, umber, green earth, burnt Terra di Siena, or graphite. Furthermore, black pigments such as iron oxide black, colored pigments such as ultramarine or iron oxide red, as well as fluorescent or phosphorescent pigments can be used as inorganic color pigments. Particularly suitable are colored metal oxides, hydroxides, and oxide hydrates, mixed-phase pigments, sulfur-containing silicates, silicates, metal sulfides, complex metal cyanides, metal sulfates,-chromates and / or -molybdates. Particularly preferred color pigments are black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and brown iron oxide (CI 77491), manganese violet (CI 77742), ultramarines (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), iron blue (ferric ferrocyanide, CI 77510), and / or carmine (cochineal). Colored pearlescent pigments that are also particularly preferred according to the invention are colored pearlescent pigments. These are usually based on mica and / or mica and can be coated with one or more metal oxides. Mica belongs to the phyllosilicates. The most important representatives of these silicates are muscovite, phlogopite, paragonite, biotite, lepidolite, and margarite. To produce pearlescent pigments in combination with metal oxides, mica, predominantly muscovite or phlogopite,coated with a metal oxide. As an alternative to natural mica, synthetic mica optionally coated with one or more metal oxides can also be used as a pearlescent pigment. Particularly preferred pearlescent pigments are based on natural or synthetic mica and are coated with one or more of the aforementioned metal oxides. The color of the respective pigments can be varied by varying the layer thickness of the metal oxide(s). In a further preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one inorganic pigment (F-2), which is preferably selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments, and / or colored pigments based on mica or mica.which are coated with at least one metal oxide and / or one metal oxychloride. In a further preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one pigment selected from mica-based pigments coated with one or more metal oxides from the group consisting of titanium dioxide (CI 77891), black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and / or brown iron oxide (CI 77491, CI 77499), manganese violet (CI 77742), ultramarines (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), chromium oxide (CI 77288) and / or iron blue (ferric ferrocyanide, CI 77510). Examples of particularly suitable colour pigments are commercially available under the trade names Rona®, Colorona®, Xirona®, Dichrona® and Timiron® from Merck, Ariabel® and Unipure® from Sensient,Prestige® von der Firma Eckart Cosmetic Colors und Sunshine® von der Firma Sunstar erhältlich. Ganz besonders bevorzugte Farbpigmente mit der Handelsbezeichnung Colorona® sind beispielsweise: Colorona Copper, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Passion Orange, Merck, Mica, CI 77491 (Iron Oxides), Alumina Colorona Patina Silver, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona RY, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 75470 (CARMINE) Colorona Oriental Beige, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Dark Blue, Merck, MICA, TITANIUM DIOXIDE, FERRIC FERROCYANIDE Colorona Chameleon, Merck, CI 77491 (IRON OXIDES), MICA Colorona Aborigine Amber, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Blackstar Blue, Merck, CI 77499 (IRON OXIDES), MICA Colorona Patagonian Purple, Merck, MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE), CI 77510 (FERRIC FERROCYANIDE) Colorona Red Brown, Merck,MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Russet, Merck, CI 77491 (TITANIUM DIOXIDE), MICA, CI 77891 (IRON OXIDES) Colorona Imperial Red, Merck, MICA, TITANIUM DIOXIDE (CI 77891), D&C RED NO.30 (CI 73360) Colorona Majestic Green, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 77288 (CHROMIUM OXIDE GREENS) Colorona Light Blue, Merck, MICA, TITANIUM DIOXIDE (CI 77891), FERRIC FERROCYANIDE (CI 77510) Colorona Red Gold, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Gold Plus MP 25, Merck, MICA, TITANIUM DIOXIDE (CI 77891), IRON OXIDES (CI 77491) Colorona Carmine Red, Merck, MICA, TITANIUM DIOXIDE, CARMINE Colorona Blackstar Green, Merck, MICA, CI 77499 (IRON OXIDES) Colorona Bordeaux, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze Fine, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Fine Gold MP 20, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Sienna Fine,Merck, CI 77491 (IRON OXIDES), MICA Colorona Sienna, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Precious Gold, Merck, Mica, CI 77891 (Titanium dioxide), Silica, CI 77491(Iron oxides), Tin oxide Colorona Sun Gold Sparkle MP 29, Merck, MICA, TITANIUM DIOXIDE, IRON OXIDES, MICA, CI 77891, CI 77491 (EU) Colorona Mica Black, Merck, CI 77499 (Iron oxides), Mica, CI 77891 (Titanium dioxide) Colorona Bright Gold, Merck, Mica, CI 77891 (Titanium dioxide), CI 77491(Iron oxides) Colorona Blackstar Gold, Merck, MICA, CI 77499 (IRON OXIDES) Weiterhin besonders bevorzugte Farbpigmente mit der Handelsbezeichnung Xirona® sind beispiels- weise: Xirona Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide Xirona Kiwi Rose, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Magic Mauve, Merck, Silica, CI 77891 (Titanium Dioxide),Tin oxide. In addition, particularly preferred color pigments with the trade name Unipure® are, for example: Unipure Red LC 381 EM, Sensient CI 77491 (Iron Oxides), Silica Unipure Black LC 989 EM, Sensient, CI 77499 (Iron Oxides), Silica Unipure Yellow LC 182 EM, Sensient, CI 77492 (Iron Oxides), Silica Within the scope of a further embodiment, the colorant (F) according to the invention can also contain one or more organic pigments. The organic pigments according to the invention are correspondingly insoluble, organic dyes or lakes which are selected, for example, from the group of nitroso-, nitro-, azo-, xanthene-, anthraquinone-, isoindolinone-, isoindoline-, quinacridone-, perinone-, perylene-, diketopyrrolopyrrole-, indigo-, Thioindido, dioxazine, and / or triarylmethane compounds. Particularly suitable organic pigments include, for example, carmine, quinacridone, phthalocyanine, sorghum,blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470. In a further particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) contains at least one organic pigment (F-2), which is preferably selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum,blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470. The organic pigment may also be a colored lake. For the purposes of the invention, the term colored lake refers to particles comprising a layer of absorbed dyes.wherein the unit comprising particles and dye is insoluble under the above-mentioned conditions. The particles can be, for example, inorganic substrates, which can be aluminum, silica, calcium borosilicate, calcium aluminum borosilicate, or even aluminum. Alizarin lake, for example, can be used as the colored lake. Due to their excellent light and temperature stability, the use of the aforementioned pigments in the colorant (F) of the process according to the invention is very particularly preferred. Furthermore, it is preferred if the pigments used have a specific particle size. It is therefore advantageous according to the invention if the at least one pigment has an average particle size D50 of 1.0 to 50 μm, preferably of 5.0 to 45 μm, more preferably of 10 to 40 μm, in particular of 14 to 30 μm.The average particle size D50 can be determined, for example, using dynamic light scattering (DLS). Pigments with a specific shape can also be used to color the keratin fibers. For example, a pigment based on a lamellar and / or lenticular substrate platelet can be used. Furthermore, coloring based on a substrate platelet that comprises a vacuum-metallized pigment is also possible. In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one pigment selected from the group of pigments based on a lamellar substrate platelet, pigments based on a lenticular substrate platelet, and vacuum-metallized pigments. The substrate platelets of this type have an average thickness of at most 50 nm, preferably less than 30 nm, particularly preferably at most 25 nm.for example, at most 20 nm. The average thickness of the substrate platelets is at least 1 nm, preferably at least 2.5 nm, particularly preferably at least 5 nm, for example at least 10 nm. Preferred ranges for the thickness of the substrate platelets are 2.5 to 50 nm, 5 to 50 nm, 10 to 50 nm; 2.5 to 30 nm, 5 to 30 nm, 10 to 30 nm; 2.5 to 25 nm, 5 to 25 nm, 10 to 25 nm, 2.5 to 20 nm, 5 to 20 nm and 10 to 20 nm. Each substrate platelet preferably has a thickness that is as uniform as possible. Due to the low thickness of the substrate platelets, the pigment has a particularly high hiding power. The substrate platelets are preferably monolithic in structure. Monolithic in this context means consisting of a single, closed unit without fractures, stratification, or inclusions, although structural changes may occur within the substrate platelets. The substrate platelets are preferably homogeneous,i.e., no concentration gradient occurs within the platelets. In particular, the substrate platelets are not layered and do not have any particles distributed therein. The size of the substrate platelet can be tailored to the respective application, in particular the desired effect on the keratin material. As a rule, the substrate platelets have an average largest diameter of approximately 2 to 200 μm, in particular approximately 5 to 100 μm. In a preferred embodiment, the aspect ratio, expressed as the ratio of the average size to the average thickness, is at least 80, preferably at least 200, more preferably at least 500, particularly preferably more than 750. The average size of the uncoated substrate platelets is understood to be the d50 value of the uncoated substrate platelets. The d50 value was, unless otherwise stated,Determined using a Sympatec Helos device with Quixel wet dispersion. For sample preparation, the sample to be tested was predispersed in isopropanol for 3 minutes. The substrate platelets can be made of any material that can be formed into platelets. They can be of natural origin or synthetically produced. Materials from which the substrate platelets can be constructed include metals and metal alloys, metal oxides, preferably aluminum oxide, inorganic compounds and minerals such as mica and (semi-)precious stones, as well as plastics. The substrate platelets are preferably made of metal (alloys). Any metal suitable for metallic luster pigments can be considered. Such metals include iron and steel, as well as all air- and water-resistant (semi-)metals such as platinum, zinc, chromium, molybdenum, and silicon.and their alloys such as aluminum bronze and brass. Preferred metals are aluminum, copper, silver, and gold. Preferred substrates are aluminum and brass.Aluminum substrate platelets are particularly preferred. Lamellar substrate platelets are characterized by an irregularly structured edge and are also referred to as "cornflakes" due to their appearance. Due to their irregular structure, pigments based on lamellar substrate platelets generate a high proportion of scattered light. Furthermore, pigments based on lamellar substrate platelets do not completely cover the existing color of a keratinous material, and effects analogous to natural graying can be achieved, for example. Lenticular (= lens-shaped) substrate platelets have a substantially regular, round edge and are also referred to as "silver dollars" due to their appearance. Due to their regular structure, the proportion of reflected light predominates in pigments based on lenticular substrate platelets. Vacuum metallized pigments (vacuum metallized pigments)VMPs can be obtained, for example, by releasing metals, metal alloys, or metal oxides from appropriately coated foils. They are characterized by a particularly low thickness of the substrate platelets in the range of 5 to 50 nm and by a particularly smooth surface with increased reflectivity. Substrate platelets comprising a vacuum-metallized pigment are also referred to in this application as VMP substrate platelets. VMP substrate platelets made of aluminum can be obtained, for example, by releasing aluminum from metallized foils. The substrate platelets made of metal or metal alloy can be passivated, for example, by anodizing (oxide layer) or chromating. Uncoated lamellar, lenticular, and / or VPM substrate platelets, in particular those made of metal or metal alloy,reflect the incident light to a high degree and produce a light-dark flop. These have proven to be particularly preferred for use in the colorant. Suitable pigments based on a lamellar substrate platelet include, for example, the pigments of the VISIONAIRE series from Eckart. Pigments based on a lenticular substrate platelet are available, for example, under the name Alegrace® Gorgeous from Schlenk Metallic Pigments GmbH. Pigments based on a substrate platelet comprising a vacuum-metallized pigment are available, for example, under the name Alegrace® Marvelous or Alegrace® Aurous from Schlenk Metallic Pigments GmbH. In a further particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) comprises at least one pigment (F-2) from the group consisting of inorganic pigments, organic pigments,Pigments based on a lamellar substrate platelet, pigments based on a lenticular substrate platelet, and / or vacuum-metallized pigments. The pigment(s) (F-2) represent(s) the second essential constituent of the colorant (F) according to the invention and are preferably used in the composition in certain quantity ranges. Particularly good results were obtained when the colorant—based on the total weight of the colorant—contained one or more pigments (F-2) in a total amount of 0.01 to 10.0 wt. %, preferably 0.1 to 5.0 wt. %, more preferably 0.2 to 2.5 wt. %, and most preferably 0.25 to 1.5 wt. %. In a further very particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) - based on the total weight of the colorant (F) - contains one or more pigments (F-2) in a total amount of 0.01 to 10.0% by weight, preferably 0.1 to 5.0% by weight,more preferably from 0.2 to 2.5 wt.% and most preferably from 0.25 to 1.5 wt.%. Direct dyes in the colorant (F) In principle, the colorants (F) used in the process according to the invention can also contain one or more direct dyes as optional components. Direct dyes are dyes that are absorbed directly onto the hair and do not require an oxidative process to develop the color. Direct dyes are typically nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, triarylmethane dyes or indophenols. The direct dyes within the meaning of the present invention have a solubility in water (760 mmHg) at 25°C of more than 0.5 g / L and are therefore not to be regarded as pigments. Preferably, the direct dyes according to the present invention have a solubility in water (760 mmHg) at 25 °C of more than 1,0 g / L. The essential advantage of the process according to the invention, however, is that the colorations achievable with the pigment-based colorant (F) are, on the one hand, very wash-stable, but, on the other hand, also possess very high shade stability and can be completely removed again with a suitable color stripping agent. This means that the fading of the color, provided it occurs to a reduced extent after several washes of the keratin material, occurs while retaining the color shade without any visible color shift. This shade stability can be observed even when the colorant (F) contains a mixture of pigments (F-2) of different colors. Without being bound to this theory, it is assumed in this context that the reason for the high stability of the color shade can be seen in the fact thatthat all pigments are deposited in the form of a film on the surface of the keratin material. In contrast to direct dyes, the pigments cannot diffuse into the keratin material, and also in contrast to direct dyes, the size or structure of a pigment cannot influence its depth of penetration into the keratin material. If a mixture of direct dyes of different colors is applied to the keratin material, these different dyes are usually based on different chromophoric structures and molecules of different sizes. Due to their structural differences, these different dyes can diffuse to different depths into the keratin material and are also washed out of the keratin material to different degrees during washing. This is particularly true for colorings in natural tones, which, for example, are achieved using a mixture of a yellow,a red and a blue direct dye, a color shift from brown to yellowish, reddish, or bluish can be observed over the course of several washes or shampoos. The colorations produced using the process according to the invention are based on a pigment-silane condensate film located on the surface of the keratin material. Washing tests have now shown that although repeated washes lead to a slight reduction in color intensity, no shift in color tone occurs. The dissolution of different colored pigments from the film during a hair wash is therefore much more uniform. The fact that this color shift does not occur when using the process according to the invention is a significant advantage over a coloring system based on direct dyes. For this reason, it is particularly preferredif the colorant (F) does not contain any direct dyes or contains them only in very small amounts. In a further, very particularly preferred embodiment, a process according to the invention is characterized in that the total amount of the direct dyes contained in the colorant (F) - based on the total weight of the colorant (F) - is below 0.1 wt.%, preferably below 0.05 wt.%, more preferably below 0.01 wt.% and most preferably below 0.001 wt.%. In other words, in a further very particularly preferred embodiment, a process according to the invention is characterized in that the total amount of the direct dyes contained in the colorant (F) - based on the total weight of the colorant (F) - is below 0.1 wt.%, preferably below 0.05 wt.%, more preferably below 0.01 wt.% and very particularly preferably below 0.001 wt.%, wherein the direct dyes are characterized in that they have a solubility in water (760 mmHg) at 25°C of more than 0.5 g / L. In a further, very particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) is free of direct dyes. Direct dyes can be divided into anionic, cationic, and nonionic direct dyes. Cationic direct dyes are, for example, Basic Blue 7, Basic Blue 26, HC Blue 16, Basic Violet 2 and Basic Violet 14, Basic Yellow 57, Basic Red 76, Basic Blue 16, Basic Blue 347 (Cationic Blue 347 / Dystar), HC Blue No.16, Basic Blue 99, Basic Brown 16, Basic Brown 17, Basic Yellow 57, Basic Yellow 87, Basic Orange 31,Basic Red 51 Basic Red 76. Examples of non-ionic direct dyes include non-ionic nitro and quinone dyes and neutral azo dyes. Examples of non-ionic direct dyes are the compounds known under the international names or trade names 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 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, as well as 1,4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1,4-bis-(2-hydroxyethyl)-amino-2-nitrobenzene, 3-nitro-4-(2-hydroxyethyl)-aminophenol, 2-(2-Hydroxyethyl)amino-4,6-dinitro-phenol, 4-[(2-Hydroxyethyl)amino]-3-nitro-1-methylbenzene, 1-amino-4-(2-hydroxyethyl)-amino-5-chloro-2-nitrobenzene, 4-amino-3-nitrophenol, 1-(2'-Ureidoethyl)amino-4-nitrobenzene,2-[(4-Amino-2-nitrophenyl)amino]benzoic acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid, and 2-chloro-6-ethylamino-4-nitrophenol. Anionic direct dyes are also known as acid dyes. Acid dyes are direct dyes that contain at least one carboxylic acid group (-COOH) and / or one sulfonic acid group (-SO3H). Depending on the pH value, the protonated forms (-COOH, -SO3H) of the carboxylic acid or sulfonic acid groups are in equilibrium with their deprotonated forms (-COO-, -SO3-). As the pH decreases, the proportion of protonated forms increases. If direct dyes are used in the form of their salts,The carboxylic acid groups or sulfonic acid groups are present in deprotonated form and are neutralized with corresponding stoichiometric equivalents of cations to maintain electroneutrality. Acid dyes according to the invention can also be used in the form of their sodium salts and / or their potassium salts. The acid dyes within the meaning of the present invention have a solubility in water (760 mmHg) at 25 °C of more than 0.5 g / L and are therefore not considered pigments. The acid dyes within the meaning of the present invention preferably have a solubility in water (760 mmHg) at 25 °C of more than 1.0 g / L. The alkaline earth metal salts (such as calcium salts and magnesium salts) or aluminum salts of acid dyes often have poorer solubility than the corresponding alkali metal salts. If the solubility of these salts is below 0.5 g / L (25 °C, 760 mmHg),These do not fall under the definition of a direct dye. A key characteristic of acid dyes is their ability to form anionic charges, with the carboxylic acid or sulfonic acid groups responsible for this being usually linked to various chromophoric systems. Suitable chromophoric systems can be found, for example, in the structures of nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes, rhodamine dyes, oxazine dyes, and / or indophenol dyes. Examples of acid dyes that can be mentioned are: Acid Yellow 1 (D&C Yellow 7, Citronin A, Ext. D&C Yellow No.7, Japan Yellow 403, CI 10316, COLIPA n° B001), Acid Yellow 3 (COLIPA n°: C 54, D&C Yellow Nº 10, Quinoline Yellow, E104, Food Yellow 13), Acid Yellow 9 (CI 13015), Acid Yellow 17 (CI 18965), Acid Yellow 23 (COLIPA n° C 29, Covacap Jaune W 1100 (LCW),Sicovit Tartrazine 85 E 102 (BASF), Tartrazine, Food Yellow 4, Japan Yellow 4, FD&C Yellow No. 5), Acid Yellow 36 (CI 13065), Acid Yellow 121 (CI 18690), Acid Orange 6 (CI 14270), Acid Orange 7 (2-Naphthol orange, Orange II, CI 15510, D&C Orange 4, COLIPA n° C015), Acid Orange 10 (C.I. 16230; Orange G sodium salt), Acid Orange 11 (CI 45370), Acid Orange 15 (CI 50120), Acid Orange 20 (CI 14600), Acid Orange 24 (BROWN 1;CI20170;KATSU201;nosodiumsalt;Brown No.201;RESORCIN BROWN;ACID ORANGE 24;Japan Brown 201;D & C Brown No.1), Acid Red 14 (C.I.14720), Acid Red 18 (E124, Red 18; CI 16255), Acid Red 27 (E 123, CI 16185, C-Rot 46, Echtrot D, FD&C Red Nr.2, Food Red 9, Naphtholrot S), Acid Red 33 (Red 33, Fuchsia Red, D&C Red 33, CI 17200), Acid Red 35 (CI C.I.18065), Acid Red 51 (CI 45430, Pyrosin B, Tetraiodfluorescein, Eosin J, Iodeosin), Acid Red 52 (CI 45100, Food Red 106, Solar Rhodamine B, Acid Rhodamine B, Red n° 106 Pontacyl Brilliant Pink), Acid Red 73 (CI CI 27290),Acid Red 87 (Eosin, CI 45380), Acid Red 92 (COLIPA n° C53, CI 45410), Acid Red 95 (CI 45425, Erythtosine,Simacid Erythrosine Y), Acid Red 184 (CI 15685), Acid Red 195, Acid Violet 43 (Jarocol Violet 43, Ext. D&C Violet n° 2, C.I.60730, COLIPA n° C063), Acid Violet 49 (CI 42640), Acid Violet 50 (CI 50325), Acid Blue 1 (Patent Blue, CI 42045), Acid Blue 3 (Patent Blau V, CI 42051), Acid Blue 7 (CI 42080), Acid Blue 104 (CI 42735), Acid Blue 9 (E 133, Patentblau AE, Amidoblau AE, Erioglaucin A, CI 42090, C.I. Food Blue 2), Acid Blue 62 (CI 62045), Acid Blue 74 (E 132, CI 73015), Acid Blue 80 (CI 61585), Acid Green 3 (CI 42085, Foodgreen1), Acid Green 5 (CI 42095), Acid Green 9 (C.I.42100), Acid Green 22 (C.I.42170), Acid Green 25 (CI 61570, Japan Green 201, D&C Green No.5), Acid Green 50 (Brillantsäuregrün BS, C.I.44090, Acid Brilliant Green BS, E 142), Acid Black 1 (Black n° 401, Naphthalene Black 10B, Amido Black 10B, CI 20470, COLIPA n° B15), Acid Black 52 (CI 15711),Food Yellow 8 (CI 14270), Food Blue 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11, D&C Red 21, D&C Red 27, D&C Red 33, D&C Violet 2, and / or D&C Brown 1. The water solubility of the direct dyes can be determined, for example, in the following way: 0.1 g of the direct dye is placed in a beaker. A stir bar is added. Then 100 ml of water is added. This mixture is heated to 25°C on a magnetic stirrer while stirring. It is stirred for 60 minutes. The aqueous mixture is then visually assessed. If undissolved residues remain, the amount of water is increased – for example, in 10 ml increments. Water is added until the used amount of dye has completely dissolved. If the dye-water mixture cannot be assessed visually due to the high intensity of the dye,The mixture is filtered. If a portion of undissolved dye remains on the filter paper, the solubility test is repeated using a larger amount of water. If 0.1 g of the anionic direct dye dissolves in 100 ml of water at 25 °C, the solubility of the dye is 1.0 g / L. Acid Yellow 1 is called 8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid disodium salt and has a water solubility of at least 40 g / L (25 °C). Acid Yellow 3 is a mixture of the sodium salts of mono- and disulfonic acids of 2-(2-quinolyl)-1H-indene-1,3(2H)-dione and has a water solubility of 20 g / L (25 °C). Acid Yellow 9 is the disodium salt of 8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid; its water solubility is above 40 g / L (25 °C). Acid Yellow 23 is the trisodium salt of 4,5-Dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylic acid and readily soluble in water at 25 °C. Acid Orange 7 is the sodium salt of 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate. Its water solubility is more than 7 g / L (25 °C). Acid Red 18 is the trisodium salt of 7-hydroxy-8-[(E)-(4-sulfonato-1-naphthyl)diazenyl)]-1,3-naphthalenedisulfonate and has a very high water solubility of more than 20 wt%. Acid Red 33 is the disodium salt of 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonate; its water solubility is 2.5 g / L (25 °C). Acid Red 92 is the disodium salt of 3,4,5,6-tetrachloro-2-(1,4,5,8-tetrabromo-6-hydroxy-3-oxoxanthen-9-yl)benzoic acid; its water solubility is stated to be greater than 10 g / L (25 °C). Acid Blue 9 is the disodium salt of 2-({4-[N-ethyl(3-sulfonatobenzyl]amino]phenyl}{4-[(N-ethyl(3-sulfonatobenzyl)imino]-2,5-cyclohexadien-1-ylidene}methyl)-benzenesulfonate and has a water solubility of more than 20 wt. % (25 °C). Cosmetic carrier of the colorant (F) The colorant (F) contains the silanes (F-1) and the pigments (F-2), particularly preferably in a cosmetic carrier. The colorant (F) is preferably formulated with a low water content or without water; therefore, this cosmetic carrier is preferably not water. Particularly suitable as cosmetic carriers are, for example, the compounds from the group consisting of poly-C1-C6-alkylene glycols, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerin, phenoxyethanol, and benzyl alcohol. Poly-C1-C6-alkylene glycols, especially polyethylene glycols, have shown particularly good suitability for this purpose. Within the scope of another particularly preferred embodiment, a process according to the invention is characterized in thatthat the colorant (F) contains at least one solvent from the group consisting of poly-C1-C6-alkylene glycols, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol, and benzyl alcohol, very particularly preferably from ethylene glycols. Suitable poly-C1-C6-alkylene glycols include, in particular, the polyethylene glycols described, for example, by the formula (AG) where p is an integer from 1 to 1000, preferably 1 to 100, particularly preferably 2 to 50. The alkylene glycols of the formula (AG) are protic substances having at least one hydroxyl group which, due to their repeating unit -CH2-CH2-O-, provided that p is a value of at least 2,can also be referred to as polyethylene glycols. In the alkylene glycols of the formula (AG), p stands for an integer from 1 to 10,000. In the course of the work leading to this invention, it has been found that these polyethylene glycols are particularly suitable for improving the fastness properties of the colorants and for optimally adjusting the viscosity of the agents. 1,2-Propylene glycol is alternatively also referred to as 1,2-propanediol and has the CAS numbers 57-55-6 [(RS)-1,2-dihydroxypropane], 4254-14-2 [(R)-1,2-dihydroxypropane] and 4254-153 [(S)-1,2-dihydroxypropane]. 1,3-Propylene glycol is alternatively also referred to as 1,3-dihydroxypropane or 1,3-propanediol and has the CAS number 504-63-2. 1,2-Butylene glycol can also be called 1,2-butanediol and has the CAS numbers 584-03-2 (racemate),40348-66-1 ((R)-enantiomer) and 73522-17-5 ((S)-enantiomer). Dipropylene glycols (or oxydipropanols) form a group of substances derived from glycol ethers. The group of dipropylene glycols includes oxydi-1-propanol (CAS No. 108-61-2), oxydi-2-propanol (CAS No. 110-98-5), and 2-(2-hydroxypropoxy)-1-propanol (CAS No. 106-62-7). The mixture of these three isomers has CAS No. 25265-71-8. Ethanol has CAS No. 64-17-5. Isopropanol is also known as 2-propanol and has the CAS No. 67-63-0. Ethylene glycol is also known as 1,2-ethanediol and has the CAS No. 107-21-1. Diethylene glycol monoethyl ether can also be known as ethoxydiglycol or ethyldiglycol or 2-(2-ethoxyethoxy)ethanol and has the CAS No. 111-90-0. Glycerin is also known as 1,2,3-Propanetriol is referred to as 3-propanetriol and has the CAS number 56-81-5. Phenoxyethanol has the CAS number 122-99-6. Benzyl alcohol can also be referred to as phenylmethanol and has the CAS number 100-51-6. All of the solvents described above are commercially available from various chemical suppliers such as Aldrich or Fluka. One solvent particularly suitable for the colorant (F) is ethylene glycol, which belongs to the group of poly-C1-C6-alkylene glycols and contains repeating -CH2-CH2-O units. Ethylene glycols are compounds of the formula (EG-F), (EG-F), where y is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100, and most preferably an integer from 5 to 30. If y is the number 1, the ethylene glycol of the formula (EG-F) is ethylene glycol itself, which is alternatively also referred to as 1,2-ethanediol and has the CAS number 107-21-1. The polyethylene glycols of the formula (EG-F) are protic substances with at least two hydroxyl groups, which, due to their repeat unit -CH2-CH2-O-, since y stands for a value of at least 2, can also be referred to as polyalkylene glycols or polyethylene glycols. In the alkylene glycols of the formula (EG-F), y is an integer from 1 to 10,000.In the course of the work leading to this invention, it has been found that these polyethylene glycols are particularly suitable for improving the fastness properties of the colorants and for optimally adjusting the viscosity of the agents. Depending on their chain length, polyethylene glycols are liquid or solid, water-soluble polymers. Polyethylene glycols with a molecular weight between 200 g / mol and 400 g / mol are non-volatile liquids at room temperature. PEG 600 has a melting range of 17 to 22 °C and thus a paste-like consistency. With molecular weights above 3000 g / mol, the PEGs are solid substances and are marketed as flakes or powder. The use of low molecular weight alkylene glycols (or polyethylene glycols) has proven particularly suitable for solving the problem according to the invention.Polyethylene glycols) in the sense of the present invention, y stands for an integer from 1 to 100, preferably for an integer from 1 to 80, more preferably for an integer from 2 to 60, even more preferably for an integer from 3 to 40, even more preferably for an integer from 4 to 20 and very particularly preferably for an integer from 6 to 15. In a further very particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one polyethylene glycol of the formula (EG-1). where y1 is an integer from 2 to 100, preferably an integer from 2 to 80, more preferably an integer from 2 to 60, even more preferably an integer from 3 to 40, even more preferably an integer from 4 to 20, and most preferably an integer from 6 to 15. A particularly preferred low-molecular-weight polyethylene glycol is, for example, PEG-8. PEG-8 comprises on average 8 ethylene glycol units (y1 = 8), has an average molecular weight of 400 g / mol, and has the CAS number 25322-68-3. PEG-8 is alternatively also referred to as PEG 400 and is commercially available, for example, from APS. Other suitable low-molecular-weight polyethylene glycols include PEG-6, PEG-7, PEG-9, and PEG-10. Another suitable polyethylene glycol is, for example, PEG-32. PEG-32 comprises 32 ethylene glycol units (y1 = 32), has an average molecular weight of 1500 g / mol and has the CAS number 25322-68-3.PEG-32 is also alternatively referred to as PEG 1500 and can be purchased commercially, for example, from Clariant. Furthermore, the use of high-molecular-weight polyethylene glycols has also proven highly suitable for solving the problem of the invention. High-molecular-weight polyethylene glycols within the meaning of the present invention can be represented by the formula (EG-2), where the index number Y2 represents an integer from 101 to 10,000. (EG-2).In the case of particularly suitable high-molecular-weight polyethylene glycols, y2 represents an integer from 101 to 1000, preferably an integer from 105 to 800, more preferably an integer from 107 to 600, even more preferably an integer from 109 to 400, and most preferably an integer from 110 to 200. In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one alkylene glycol of the formula (EG-2), (EG-2),where y2 stands for an integer from 101 to 1000, preferably an integer from 105 to 800, more preferably an integer from 107 to 600, even more preferably an integer from 109 to 400, and most preferably an integer from 110 to 200. A particularly suitable high-molecular-weight polyethylene glycol is, for example, PEG 6000, which can be obtained commercially from National Starch (China). The molecular weight of PEG 6000 is 6000 to 7500 g / mol, which corresponds to a y2 value of 136 to 171. Another suitable polyethylene glycol is PEG 12000, which is marketed commercially, for example, under the trade name Polyethylene Glycol 12000 S (or PEG 12000 S) by CG Chemicals. The molecular weight of PEG 12000 is given as 10500 to 15000 g / mol, corresponding to a y2 value of 238 to 341.Another highly suitable polyethylene glycol is PEG 20000, which is commercially available from Clariant under the trade name Polyglycol 20000 P or under the alternative name PEG-350. PEG 20000 has an average molecular weight of 20000 g / mol, corresponding to a y2 value of 454. The solvent(s) are preferably used in specific quantity ranges in the colorant (F). The colorant (F) preferably contains one or more solvents in a total amount of 10.0 to 99.0 wt. %, preferably 30.0 to 99.0 wt. %, more preferably 50.0 to 99.0 wt. %, and most preferably 70.0 to 99.0 wt. %, based on the total weight of the colorant (F).Within the scope of a further particularly preferred embodiment, a process according to the invention is therefore characterized in that the colorant (F) - based on the total weight of the colorant (F) - contains one or more solvents in a total amount of 10.0 to 99.0 wt. %, preferably 30.0 to 99.0 wt. %, more preferably 50.0 to 99.0 wt. % and very particularly preferably 70.0 to 99.0 wt. %. Within the scope of a further very particularly preferred embodiment, a process according to the invention is therefore characterized in that the colorant (F) contains one or more ethylene glycols of the formula (EG-F). where y is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100 and most preferably an integer from 5 to 30. In a very particularly preferred embodiment, a process according to the invention is characterized in that the colorant (F) - based on the total weight of the colorant (F) - contains one or more ethylene glycols of the formula (EG-F) in a total amount of 10.0 to 99.0 wt.%, preferably 30.0 to 99.0 wt.%, more preferably 50.0 to 99.0 wt.% and most preferably 70.0 to 99.0 wt.%, where y is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100, and most preferably an integer from 5 to 30. Further optional ingredients in the agents (V) and / or (F) In addition to the components already described which are essential to the invention, the pretreatment agent (V) and / or the colorant (F) may also contain further optional ingredients. Thus, the agents may also contain further active ingredients, auxiliaries, and additives, such as, for example, solvents, fatty components such as, for example, C8-C30 fatty alcohols, C8-C30 fatty acid triglycerides, C8-C 30 -Fatty acid monoglycerides, the C8-C 30-Fatty acid diglycerides and / or hydrocarbons; polymers; structuring agents such as glucose, maleic acid and lactic acid, hair conditioning compounds such as phospholipids, for example lecithin and cephalins; perfume oils, dimethyl isosorbide and cyclodextrins; fiber structure-improving agents, in particular mono-, di- and oligosaccharides such as glucose, galactose, fructose, fructose and lactose; dyes for coloring the product; anti-dandruff agents such as piroctone olamine, zinc omadine and climbazole; amino acids and oligopeptides; protein hydrolysates of animal and / or plant origin, as well as in the form of their fatty acid condensation products or optionally anionically or cationically modified derivatives; vegetable oils; light protectants and UV blockers; Active ingredients such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidinone carboxylic acids and their salts and bisabolol; polyphenols, especially hydroxycinnamic acids, 6,7-dihydroxycoumarins,Hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones and flavonols; ceramides or pseudoceramides; vitamins, provitamins and vitamin precursors; plant extracts; fats and waxes such as fatty alcohols, beeswax, montan wax and paraffins; swelling and penetrating agents such as glycerol, propylene glycol monoethyl ether, carbonates, hydrogen carbonates, guanidines, ureas and primary, secondary and tertiary phosphates; opacifiers such as latex, styrene / PVP and styrene / acrylamide copolymers; pearlescent agents such as ethylene glycol mono- and distearate and PEG-3 distearate; and propellants such as propane-butane mixtures, N2O, dimethyl ether,CO2 and air. The expert will select these additional substances according to the desired properties of the agent. Regarding further optional components and the amounts of these components used, reference is expressly made to the relevant manuals known to the expert. The additional active ingredients and auxiliaries are preferably used in the preparations according to the invention in amounts of 0.0001 to 25 wt.%, in particular 0.0005 to 15 wt.%, based on the total weight of the respective agent. Sequence of the process steps As already described above, the pretreatment agent (V) is applied before the application of the colorant (F). In this context, it has proven particularly preferred to apply the pretreatment agent (V) to the keratin materialto act for a certain period of time and then to rinse out again with water. Therefore, a method for coloring keratinic fibers, in particular human hair, comprising the following steps in the given order is particularly preferred: (1) applying the pretreatment agent (V) to the keratinic fibers, (2) allowing the pretreatment agent applied in step (1) to act on the keratinic fibers for a period of 2 to 45 minutes, preferably from 2 to 30 minutes and particularly preferably from 2 to 20 minutes, (3) rinsing out the pretreatment agent (V) with water, (4) applying the coloring agent (F) to the keratinic fibers, and (5) allowing the coloring agent applied in step (4) to act on the keratinic fibers for a period of 15 seconds to 45 minutes, preferably from 30 seconds to 30 minutes and particularly preferably from 1 to 15 minutes. In step (1) of the process according to the invention, a pretreatment agent (V),which contains at least one oxidizing agent from group (V-1), is applied to the hair. In the following step, the previously applied pretreatment agent (V) is allowed to act on the keratin fibers. In this context, various exposure times from 2 to 45 minutes, preferably from 2 to 30 minutes, and particularly preferably from 2 to 20 minutes are possible. After the pretreatment agent (V) has acted on the keratin fibers, it is finally rinsed out with water in step (3). The pretreatment agent (V) can either be washed out with water alone, i.e., without the aid of a shampoo, or the washing-out process can be assisted by the use of a shampoo. In principle, the user can now freely choose the period of time between the application of the two agents (V) and (F). However, it may be preferred that no further agents, such as other conditioners, are applied between the application of the two agents (V) and (F).Shampoos or styling agents are applied. For this reason, the maximum period between the application of the two agents (V) and (F) is particularly preferably limited to a maximum time interval of 24 hours. It has proven preferable if there is a maximum period of 24 hours, preferably a maximum of 12 hours, more preferably a maximum of 6 hours, and most preferably a maximum of 3 hours between the application of the pretreatment agent (V) and the colorant (F). Furthermore, it has also proven preferable if there is a maximum period of 24 hours, preferably a maximum of 12 hours, more preferably a maximum of 6 hours, and most preferably a maximum of 3 hours between the rinsing of the pretreatment agent (V) with water and the application of a colorant (F) to the keratin fibers. In a further preferred embodiment, a method according to the invention is characterized in thatthat between steps (3) and (4) there is a period of a maximum of 24 hours, preferably a maximum of 12 hours, more preferably a maximum of 6 hours and most preferably a maximum of 3 hours. In a further preferred embodiment, a method according to the invention is characterized in that step (4) takes place directly after step (3). Step (4) involves the application of the colorant. The action of the colorant (F) on the keratin fibers in step (5) can, for example, take place for a period of 15 seconds to 30 minutes, preferably for a period of 30 seconds to 15 minutes, particularly preferably for a period of 1 to 15 minutes. Production of the ready-to-use pretreatment agent by mixing two separately prepared preparations The pretreatment agent according to the invention described above is the ready-to-use pretreatment agent (V), which is in the form,in which it is present, can be applied directly to the keratin fibers or hair. As previously described, the pretreatment agent is characterized by its content of at least one oxidizing agent from group (V-1) and particularly preferably by its content of a combination of carbamide peroxide (V-11) and at least one persulfate (V-12) from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate, and sodium peroxodisulfate. In principle, both oxidizing agents from groups (V-1) and (V-2) can be packaged together in one agent and made available to the user in this form. For reasons of storage stability, however, it has proven particularly preferable if the carbamide peroxide (V-11) and the persulfates (V-12) are packaged in separate agents.so that the user must mix these two agents together shortly before use and thus prepare the ready-to-use pretreatment agent (V). As already described above, the pretreatment agent (V) is applied before the application of the coloring agent (F). In this context, it has proven particularly preferred to apply the pretreatment agent (V) to the keratin material, allow it to act for a certain period of time, and then rinse it out with water. Therefore, a method for coloring keratin fibers, in particular human hair, comprising the following steps is particularly preferred: (1) Providing a first agent containing carbamide peroxide, (2) Providing a second agent containing one or more peroxodisulfates from the group consisting of potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate, (3) Mixing the first and second agents,to produce a ready-to-use pretreatment agent (V), (4) applying the pretreatment agent (V) produced in step (3) to the keratin fibers, (5) allowing the pretreatment agent (V) applied in step (4) to act on the keratin fibers for a period of 2 to 45 minutes, preferably 2 to 30 minutes and particularly preferably 2 to 20 minutes, (6) optionally rinsing the pretreatment agent (V) with water, (7) applying the colorant (F) to the keratin fibers, and (8) allowing the colorant applied in step (7) to act on the keratin fibers. In steps (1) and (2) of the process, two initially separate agents are provided, the first agent containing carbamide peroxide and the second agent containing at least one peroxodisulfate from the group consisting of potassium peroxodisulfate, ammonium peroxodisulfate and sodium peroxodisulfate. The first remedy containing carbamide peroxide (V-1)is particularly preferably a liquid or flowable agent, most preferably a gel, which contains the previously described solvents and / or polyalkylene glycols. The second agent, which contains the peroxodisulfate(s) (V-2), is particularly preferably solid or paste-like. Shortly before use, these two agents are mixed together to produce the ready-to-use pretreatment agent (V). The mixing takes place in step (3) of the process. In step (4) of the process according to the invention, the ready-to-use pretreatment agent (V) is applied to keratin fibers or to the hair. In the subsequent step (5), the previously applied pretreatment agent (V) is allowed to act on the keratin fibers. In this context, various exposure times from 2 to 45 minutes are possible.preferably from 2 to 30 minutes and particularly preferably from 2 to 20 minutes. Following the action of the pretreatment agent (V) on the keratin fibers, this can finally be rinsed out with water in step (6). The pretreatment agent (V) can either be washed out with water alone, i.e. without the aid of a shampoo, or the washing-out process can be supported by the use of a shampoo. It has proven preferable if the pretreatment agent (V) is rinsed out of the keratin fibers or hair before the application of the colorant (F). In principle, the user can now freely choose the period of time between the application of the two agents (V) and (F). However, it may be preferable that no further agents, such as other conditioners or styling agents, are applied between the application of the two agents (V) and (F). For this reason, the maximum periodwhich lies between the application of the two agents (V) and (F), preferably limited to a time interval of a maximum of 24 hours. It has proven preferable if there is a period of a maximum of 24 hours, preferably a maximum of 12 hours, more preferably a maximum of 6 hours and most preferably a maximum of 3 hours between the application of the pretreatment agent (V) and the coloring agent (F) to the keratin fibers. Within the scope of a further very preferred embodiment, a method according to the invention is characterized in that the pretreatment agent (V) is applied before the coloring agent (F) and that there is a period of a maximum of 24 hours, preferably a maximum of 12 hours, between the application of the pretreatment agent (V) and the application of the coloring agent (F).more preferably a maximum of 6 hours and most preferably a maximum of 3 hours. Within the scope of a further preferred embodiment, a method according to the invention is characterized in that step (7) takes place directly after step (6) (provided the pretreatment agent is rinsed out) or that step (7) takes place directly after step (5) (provided the pretreatment agent is not rinsed out). The action of the colorant (F) on the keratin fibers in step (8) can, for example, be for a period of 15 seconds to 30 minutes, preferably for a period of 30 seconds to 15 minutes, particularly preferably for a period of 1 to 15 minutes,Application of the colorant as a rinse-off or leave-on application. After application or application and exposure of the colorant (F), it can be rinsed out again in a subsequent step. Rinsing can be carried out, for example, with or without the aid of a shampoo or conditioner. Particularly good results were obtained, however, when the coloring process according to the invention was designed as a leave-on process, i.e., in this case, the colorant (F) was not rinsed out immediately after application, but the keratin fibers still coated with the colorant (F) were dried. The drying of the keratin fibers can take place at room temperature or be assisted by an external heat source. After exposure in step (8), the colorant can be rinsed out in step (9).or the keratin fibers are dried without prior washing out of the colorant (F). Within the scope of a further particularly preferred embodiment, a method according to the invention is characterized by (9) washing out the colorant (F). Within the scope of a further particularly preferred embodiment, a method according to the invention is characterized by (9) drying the keratin fibers without prior washing out of the colorant (F) at a temperature of 40 °C to 210 °C, preferably from 45 °C to 190 °C, more preferably from 45 °C to 170 °C, even more preferably from 45 °C to 150 °C and most preferably from 45 °C to 100 °C. A drying heat treatment is understoodthat the keratin fibers are brought into contact with a heated device or this heated device is applied to or on the keratin material. Furthermore, the keratin fibers can also be brought into contact with warm / hot air for the heat treatment. The device used can be, for example, a hairdryer, a blow dryer, a heat cap, a straightening iron, a curling iron, or an infrared lamp. Within the scope of a particularly preferred embodiment, a method according to the invention is characterized in that the heat treatment is carried out with a device that is heated to a temperature of 40°C to 210°C, preferably from 45°C to 190°C, more preferably from 45°C to 170°C, even more preferably from 45°C to 100°C. Within the scope of a particularly preferred embodiment, a method according to the invention is characterized by drying the keratin fibers still coated with the colorant (F),Preferably, the keratin fibers still coated with the colorant (F) are dried under heat at a temperature of 40°C to 210°C, preferably from 40°C to 190°C, more preferably from 40°C to 170°C, even more preferably from 40°C to 100°C, and most preferably from 40°C to 80°C. For example, the keratin fibers or the hair can be treated with a hairdryer that blows warm or hot air onto the keratin material. This air is particularly preferably 45 to 100°C, or most preferably 40°C to 80°C. Alternatively, the keratin fibers or the hair can be held under an infrared lamp, which is particularly preferably set to a temperature of 40 to 100°C. For the purpose of heat treatment, hair can also be pressed between two appropriately tempered plates of a straightening iron.The plates can be moved simultaneously along the fiber. The plates of the straightening iron can, for example, be set to a temperature of up to 210 °C. The duration of the heat treatment can be adjusted to the selected temperature range. For example, a heat treatment can last from 5 seconds to 60 minutes, preferably from 15 seconds to 45 minutes, more preferably from 15 seconds to 30 minutes, and most preferably from 15 seconds to 15 minutes.

[0002] Examples 1. Pretreatment agent (V) The following formulations were prepared (all data in wt. %) unless otherwise stated): Agent (1-1) Agent (1-2) Gel with carbamide peroxide or hydrogen peroxide (wt. %) (wt. %) Glycerin 19.50 --- 1,2-Propanediol 5.00 --- Polyethylene glycol (MW = 380 – 420 g / mol, CAS No. 25322-68-3) 9.50 --- Disodium phosphate 1.20 1.20 Phosphoric acid (85% aqueous solution) 0.15 0.15 Sodium benzoate 0.04 0.04 Sodium hydroxide 0.60 0.60 HEDP (Etidronic acid, 60% aqueous solution) 0.50 0.50 Carbamide peroxide 17.00 --- Carbopol Ultrez 21 (Acrylates / C10-30 Alkyl Acrylate 1.5 1.5 Crosspolymer, Lubrizol) Hydrogen peroxide (50% aqueous solution) --- 23.2 Water (distilled) ad 100 ad 100 Agent (2) Persulfate Bleaching powder (wt.%) Sodium silicate / sodium disilicate (Britesil C 265, PQ Corporation) 36.00 CAS No.1344-09-8 Magnesium carbonate 9.80 Sodium hexametaphosphate 0.20 Tylose H 1000000 YP2 (Hydroxyethylcellulose, SE Tylose, Shin Etsu) 0.35 Cekol 50000 (Carboxymethylcellulose, sodium salt, CAS No. 9004-32-4, CP 2.00 Kelco) EDTA, disodium salt 1.6 Aerosil 50 (Evonic, hydrophilic fumed silica) 0.40 Ariabel Blue 300302 (Siliconic acid aluminum sodium salt, sulfurized 0.15 Pigment Blue 29) Potassium peroxodisulfate 32.00 Ammonium peroxodisulfate 10.00 Paraffinum Liquidum ad 100 2. Colorant (F) The following colorant was prepared (all values ​​in % by weight) Colorant (F) % by weight (3-Aminopropyl)triethoxysilane 3.0 Methyltriethoxysilane 6.0 Water 1.0 NaOH 0.01 Unipure Red LC 3079 (Pigment Red 7, CAS No. 5281-04-9) 1.0 PEG-8 (polyethylene glycol, molecular weight 400 g / mol) ad 100 3.Application to highlights The first ready-to-use pretreatment agent (V) was prepared by mixing 2 parts by weight of carbamide peroxide gel (agent (1-1)) and 1 part by weight of persulfate bleaching powder (agent (2)). This agent is referred to below as agent (V1). The second ready-to-use pretreatment agent (V) was prepared by mixing 2 parts by weight of the aqueous hydrogen peroxide gel (agent (1-2)) and 1 part by weight of persulfate bleaching powder (agent (2)). This agent is referred to below as agent (V2). The ready-to-use pretreatment agent (V) prepared in this way was applied to each strand of hair (Kerling). For this purpose, 4.0 g of pretreatment agent (V) per gram of hair was applied to the strands, massaged in, and left to work at room temperature for 15 minutes. The strands were then rinsed with water.Immediately afterward, the dye (F) was applied to the still-damp strands of hair (4.0 g of dye (F) per gram of hair) and massaged into each strand for 30 seconds. Another 4 g of water was added to the hair still coated with the dye, and the hair was massaged again. After a 5-minute exposure time, each strand of hair was rinsed under running water for 30 seconds and dried. Reference strands were treated directly with the dye (F) without the use of the pretreatment agent (V). Before applying the dye (F), the reference strand was only moistened with water, then the dye was applied according to the procedure described above. These strands were also visually assessed by a trained person under a daylight lamp. Following the dyeing, each dyed strand underwent ten manual hair washes.For each hair wash, the strand was moistened, then a commercially available shampoo (Schwarzkopf, Schauma 7 Kräuter) was massaged into the strand for 25 seconds (0.25 g of shampoo per gram of hair). The strand was then rinsed with lukewarm tap water for 30 seconds and dried. After 10 hair washes, each strand was visually assessed again under a daylight lamp. The hair strands were rated for their color intensity on a scale of 1 (very low color intensity) to 5 (very high color intensity). 1 Comparison = coloring without pre-treatment 2 Invention = successive application of pre-treatment product (V1) and colorant (F) 3 Comparison = successive application of pre-treatment product (V2) and colorant (F) 0 HW = color result directly after coloring Shade: red Number of hair washes (HW), color intensity Ex.(V) (F) 0 HW 10 HW 1 Comparison --- (F) 4 0 - 1 2 Invention (V1) (F) 5 4 3 Comparison (V2) (F) 5 4 5 = high intensity 1 = low intensity The strands dyed using the process according to the invention (V1) / (F) showed improved washfastness compared to the corresponding coloring without pretreatment (V). The pretreatment with percarbamide / persulfates (V1) / (F) improved the washfastness of the coloring to a similar extent as the pretreatment with hydrogen peroxide / persulfates (V2) / (F). 3. Measurement of hair damage To measure the hair damage associated with the pretreatment, the respective pretreatment agent (V1) or (V2) was applied to strands of hair (Kerling). For this purpose, 4.0 g of pretreatment agent (V) per gram of hair was applied to the strands, massaged in, and left to work at room temperature for 30 minutes. The strands were then rinsed with water and dried.The amount of cysteic acid present in the hair strand was then determined using quantitative NIR spectroscopy. The spectra were recorded using an MPA. TM FT -NIR spectrometer from Bruker Optik GmbH. The infrared range covers the wavenumber range of 12500 cm -1 up to 4000 cm -1 and is characteristic of overtone and combination vibrations of, for example, CH, OH, and NH groups. The measurements of the samples were carried out using the integrating sphere module at six different sample positions in diffuse reflection. For the analysis of the measured NIR spectra, the wavenumber range of 7300 cm -1 up to 4020 cm -1 The NIR spectra of cystine show in the wavenumber range of 6200 cm -1 up to 5500 cm -1characteristic absorption bands. If the hair changes due to more severe damage (ie the cysteic acid content in the hair increases), this affects the bands in the NIR spectrum that are characteristic of cysteic acid at 5020 cm -1 up to 4020 cm -1 The quantitative analysis of the NIR spectra was performed computer-aided. The NIR analysis value provides the amount of mol cysteic acid per 100 mol amino acid. The higher this cysteic acid value, the more severe the hair damage: Pretreatment agent (V1) Pretreatment agent (V2) 0.7 [mol cysteic acid / 100 mol amino acid] 2.6 [mol cysteic acid / 100 mol amino acid] Pretreatment with pretreatment agent (V1) was associated with reduced hair damage compared to pretreatment with (V2).

Claims

Patent claims 1. A method for coloring keratinic fibers, in particular human hair, comprising the following steps: - application of a pretreatment agent (V) to the keratinic fibers, wherein the pretreatment agent (V-1) contains at least one oxidizing agent from the group consisting of carbamide peroxide, potassium peroxodisulfate, ammonium peroxodisulfate and sodium peroxodisulfate, and - application of a coloring agent (F) to the keratinic fibers, wherein the coloring agent (F-1) contains at least one organic silicon compound from the group consisting of silanes having one, two or three silicon atoms, and (F-2) at least one pigment.

2. Process according to Claim 1, characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - contains (V-11) 0.1 to 30.0 wt.%, preferably 3.0 to 25.0 wt.%, more preferably 6.0 to 20.0 wt.% and very particularly preferably 8.0 to 17.0 wt.-% carbamide peroxide, and (V-12) one or more peroxodisulfates from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate in a total amount of 0.1 to 40.0 wt.%, preferably 3.0 to 30 wt.%, more preferably 6.0 to 20.0 wt.% and most preferably 9.0 to 17.0 wt.%.

3. The method according to one of claims 1 to 2, characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - one or more solvents from the group consisting of glycerol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, ethanol, isopropanol, dipropylene glycol, diethylene glycol monoethyl ether, phenoxyethanol, benzyl alcohol, poly-C1-C6-alkylene glycols, dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate and glycerol carbonate in a total amount of 3.0 to 80 wt.%, preferably 5.0 to 60.0 wt.%, more preferably 9.0 to 40.0 wt.-% and very particularly preferably from 12.0 to 25.0 wt.%.

4. Process according to one of claims 1 to 3, characterized in that the pretreatment agent (V) - based on the total weight of the pretreatment agent (V) - contains one or more ethylene glycols of the formula (EG-V) in a total amount of from 1.0 to 80.0 wt.%, preferably from 1.5 to 60.0 wt.%, more preferably from 3.0 to 40.0 wt.% and very particularly preferably from 4.5 to 10.0 wt.%. (EG-V), where x is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100, and most preferably an integer from 5 to 30.

5. The process according to any one of claims 1 to 4, characterized in that the pretreatment agent (V) contains, based on the total weight of the pretreatment agent (V), 5.0 to 70.0 wt.%, preferably 10.0 to 60.0 wt.%, more preferably 15.0 to 50.0 wt.%, and most preferably 20.0 to 40.0 wt.% water.Process according to one of claims 1 to 5, characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I) and / or condensation products thereof, R1R2N-L-Si(OR3)a(R4)b (I), where - R1, R2 independently of one another represent a hydrogen atom or a C1-C6 alkyl group, - L represents a linear or branched, divalent C1-C20 alkylene group, - R3 represents a hydrogen atom or a C1-C6 alkyl group, - R4 represents a C1-C6 alkyl group, - a represents an integer from 1 to 3, and - b represents the integer 3 - a.Process according to one of claims 1 to 6, characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (I) which is selected from the group consisting of - (3-aminopropyl)triethoxysilane - (3-aminopropyl)trimethoxysilane - 1-(3-aminopropyl)silanetriol - (2-aminoethyl)triethoxysilane - (2-aminoethyl)trimethoxysilane - 1-(2-aminoethyl)silanetriol - (3-dimethylaminopropyl)triethoxysilane. - (3-Dimethylaminopropyl)trimethoxysilane - 1-(3-Dimethylaminopropyl)silanetriol - (2-Dimethylaminoethyl)triethoxysilane. - (2-Dimethylaminoethyl)trimethoxysilane and / or their condensation products.

8. The process according to any one of claims 1 to 7, characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (II) and / or its condensation products, R5Si(OR6)k(R7)m (II), where - R5 represents a C1-C 18-alkyl group, - R6 represents a hydrogen atom or a C1-C6-alkyl group, - R7 represents a C1-C6-alkyl group, - k represents an integer from 1 to 3, and - m represents the integer 3 - k.

9. The method according to any one of claims 1 to 8, characterized in that the colorant (F) contains at least one organic silicon compound (F-1) of the formula (II) which is selected from the group consisting of - methyltrimethoxysilane - methyltriethoxysilane - ethyltrimethoxysilane - ethyltriethoxysilane - propyltrimethoxysilane - propyltriethoxysilane - hexyltrimethoxysilane - hexyltriethoxysilane - octyltrimethoxysilane - octyltriethoxysilane - dodecyltrimethoxysilane, - dodecyltriethoxysilane, - octadecyltrimethoxysilane and - octadecyltriethoxysilane and / or condensation products thereof.

10. Process according to one of claims 1 to 9, characterized in that the coloring agent (F) – based on the total weight of the coloring agent (F) – contains one or more organic Contains silicon compounds (F-1) in a total amount of 0.1 to 20 wt.%, preferably 1 to 15 wt.%, and particularly preferably 2 to 12 wt.%.

11. The process according to any one of claims 1 to 10, characterized in that the colorant (F) contains at least one pigment (F-2) from the group consisting of inorganic pigments, organic pigments, pigments based on a lamellar substrate platelet, pigments based on a lenticular substrate platelet, and / or vacuum-metallized pigments.

12. The process according to any one of claims 1 to 11, characterized in that the colorant (F)—based on the total weight of the colorant (F)—contains one or more pigments (F-2) in a total amount of 0.01 to 0.0 wt.%, preferably 0.1 to 5.0 wt.%, more preferably 0.2 to 2.5 wt.%, and most preferably 0.25 to 1.5 wt.%.Process according to one of claims 1 to 12, characterized in that the colorant (F) contains at least one solvent from the group consisting of poly-C1-C6-alkylene glycols, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol, and benzyl alcohol, very particularly preferably from ethylene glycols.

14. Process according to claim 13, characterized in that the colorant (F)—based on the total weight of the colorant (F)—contains one or more solvents in a total amount of 10.0 to 99.0 wt.%, preferably 30.0 to 99.0 wt.%, more preferably 50.0 to 99.0 wt.%, and very particularly preferably 70.0 to 99.0 wt.%.

15. The method according to any one of claims 1 to 14, characterized in that the colorant - based on the total weight of the colorant (F) - one or more ethylene glycols of the formula (EG-F) in a total amount of 10.0 to 99.0 wt.-%, preferably from 30.0 to 99.0 wt.%, more preferably from 50.0 to 99.0 wt.% and most preferably from 70.0 to 99.0 wt.%. where y is an integer from 1 to 10,000, preferably an integer from 2 to 500, more preferably an integer from 3 to 100 and most preferably an integer from 5 to 30.

16. The method according to any one of claims 1 to 15, comprising the following steps: (1) Providing a first agent containing carbamide peroxide, (2) Providing a second agent containing one or more peroxodisulfates from the group consisting of potassium peroxodisulfate, ammonium peroxodisulfate, and sodium peroxodisulfate, (3) Mixing the first and second agents to produce a ready-to-use pretreatment agent (V), (4) Applying the pretreatment agent (V) prepared in step (3) to the keratin fibers, (5) Allowing the pretreatment agent (V) applied in step (4) to act on the keratin fibers for a period of 2 to 45 minutes, preferably 2 to 30 minutes, and particularly preferably 2 to 20 minutes,(6) optionally rinsing the pretreatment agent (V) with water, (7) applying the coloring agent (F) to the keratin fibers, and (8) allowing the coloring agent applied in step (7) to act on the keratin fibers.

17. The method according to any one of claims 1 to 16, characterized in that the pretreatment agent (V) is applied before the coloring agent (F), and that a period of a maximum of 24 hours, preferably a maximum of 12 hours, more preferably a maximum of 6 hours, and most preferably a maximum of 3 hours, elapses between the application of the pretreatment agent (V) and the application of the coloring agent (F).

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