Abstract: The agent for coloring hair contains at least one indigoid vat dye, at least one cationic compound, and as reducing agent at least one compound which in a strongly alkaline medium forms an enediol. In the method of coloring hair the pre-reduced indigoid vat dye and the cationic compound are applied to the hair and allowed to act on the hair at a pH of 4 to 11, preferably under protection from atmospheric oxygen. Then the vat dye is re-oxidized with atmospheric oxygen or an oxidant, such as hydrogen peroxide.

Abstract: The present invention relates to agents comprising cationic azacyanine dyes of the formula (I) for coloring keratin fibers, such as, for example, wool, silk or furs and in particular human hair (where X1 is N—R1, O or S and X2 is N—R2, O or S), and to a method of coloring hair with varying degrees of damage.

Abstract: The present invention relates to the use of cationic azacyanine dyes of the formula (Ia) or (Ib) for coloring keratin fibers, and to a method of coloring hair with various degrees of damage.

Abstract: The present invention relates to agents containing cationic azacyanine dyes having formula (I) for dyeing fibers, such as, for example, keratin fibers, wool, silk or fleeces, and in particular human hair, as well as to new asymmetrical azacyanine dyes.

Abstract: The agent for dyeing hair has a pH of 4 to 11 and contains a reduced vat dye, which is obtained by reducing a vat dye, such as an anthrquinonoid dye, with a reducing agent compound that forms an enediol in an alkaline medium, preferably acetoin, monohydroxyacetone, and dihydroxyacetone. The method of dyeing hair includes pre-reducing the vat dye with the reducing agent compound at a pH of from 10 to 13 to form the reduced vat dye, providing an agent for dyeing the hair having a pH of from 4 to 11 and containing the reduced vat dye, allowing the agent to act on the hair while protecting the reduced vat dye in the agent from atmospheric oxygen, and then re-oxidizing with atmospheric oxygen or an oxidant.

Abstract: The present application has for an object a dye carrier composition containing oxidative and/or nonoxidative dyes as well as (a) at least one fatty alcohol with 14 to 60 carbon atoms, (b) at least one alkanolamide, (c) at least one fatty ester and (d) at least one anionic surfactant, the weight ratio of fatty alcohol (a) to alkanolamide (b) being equal to 1:4 to 4:1. Another object is the use of the aforesaid combination of components (a) to (d) for creating a nacreous luster effect in dye carrier compositions and in colorants for keratin fibers.

Abstract: The composition for dyeing fibers is obtained before use by mixing a first component A1, containing at least one enamine of the formula (I) with a second component A2, containing at least one carbonyl compound. A multi-component kit for dyeing and, later on, decolorizing fibers, and a method for temporarily dyeing hair with the composition for dyeing fibers and later removing the dyed hair color with a decolorizing component B containing a sulfite are also provided. The multi-component kit for dyeing and, later on, decolorizing fibers, separately contains the first component A1, the second component A2 and the decolorizing component B.

Abstract: The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: Dyeing agents for keratin fibers, containing the compounds of formula (I), and methods of dyeing hair with these dyeing agents are described.

Abstract: The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: Dyeing agents for keratin fibers, containing the compounds of formula (I), and methods of dyeing hair with these dyeing agents are described.

Abstract: The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: Dyeing agents for keratin fibers containing these compounds and methods of dyeing hair with the dyeing agents are described.

Abstract: The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: 1

Abstract: The object of the present invention are 4-nitro-2,1,3-benzoxadiazole derivatives and 4-nitro-2,1,3-benzthiadiazole derivatives of the general Formula (I) 1

Abstract: The object of the present invention are 4-nitro-2,1,3-benzoxadiazole derivatives and 4-nitro-2,1,3-benzthiadiazole derivatives of the general Formula (I) 1

Abstract: The object of the invention is a preparation for dyeing fibers, especially hair, which is prepared before use by mixing an acidic component (A1), containing at least an enamine of formula (I) or its acid addition salt of Formula (Ia) with an alkaline component (A2), containing at least one carbonyl compound and at least one primary amine, as well as a method for temporarily dyeing fibers, by means of which the coloration, obtained with the aforementioned dyeing preparation, is removed once again at any later time by a sulfite-containing decolorizing agent.

Abstract: The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: Dyeing agents for keratin fibers containing these compounds and methods of dyeing hair with the dyeing agents are described.

Abstract: The object of the present invention are 4-nitro-2,1,3-benzoxadiazole derivatives and 4-nitro-2,1,3-benzthiadiazole derivatives of the general Formula (I) 1

Abstract: The object of the invention is a preparation for dyeing fibers, especially hair, which is prepared before use by mixing an acidic component (A1), containing at least an enamine of formula (I) or its acid addition salt of Formula (Ia) 1

Abstract: The object of the invention is an agent for coloring fibers, which contains at least one aromatic aldehyde compound, at least one compound of formula (I) or (II) and an alkanolamine, in which R1 represents a C1 to C3 alkyl group, a C1 to C3 alkoxyalkyl group or a C1 to C3 hydroxyalkyl group and R2 represents hydrogen or a hydroxy group, a methoxy group, a halogen atom, an amino group or a dimethylamino group and A− represents an anion, such as chloride, bromide, sulfate, hydrogen sulfate, monomethyl sulfate, acetate, lactate or iodide; a method for coloring fibers using this agent, as well as a multicomponent kit for coloring and, later on, decolorizing fibers.