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: Agent for oxidative dyeing of keratin fibers based on developers and couplers and containing at least one aldehyde of general formula (I) or (II) as well as the use of the aldehydes of formula (I) or (II) for increasing the color intensity of oxidative colorants and/or for shortening the time of exposure to oxidative colorants.

Abstract: Agent for oxidative dyeing of keratin fibers based on developers and couplers and containing at least one aldehyde of general formula (I) or (II) 1

Abstract: The object of the invention is an agent for oxidatively dyeing keratin fibers, wherein it contains (a) at least one 4,5-diaminopyrazole derivative of Formula (I), (II) or (III) or its salt with organic or inorganic acids, as well as (b) at least one pyrazol-5-one derivative of the general formula (IV), (V) or (VI), or its salt with organic or inorganic acids,

Abstract: The object of the invention is an agent for oxidatively dyeing keratin fibers, wherein it contains (a) at least one 4,5-diaminopyrazole derivative of Formula (I), (II) or (III) or its salt with organic or inorganic acids, 1

Abstract: A multicomponent kit for coloring and later removing color from fibers is described, which consists of a first component and a second component. The first component includes a composition for oxidative dyeing of hair and the second component includes an aqueous or aqueous-alcoholic composition for reductive removal of color from dyed hair. The composition for reductive removal of color from hair has a pH of from 1.8 to 6 and is in the form of a gel, cream, emulsion, foam or solution. It contains from 1 to 50% by weight of one or more reductones, advantageously ascorbic and/or isoascorbic acid or salts thereof, and, in addition to the reductones, from 0.1 to 10% by weight of one or more thiols or a combination of from 0.1 to 10% by weight of one or more thiols and from 0.001 to 5% by weight of one or more sulfites. It also includes one or more pH adjusting agents and standard cosmetic additive ingredients.

Abstract: The method for decolorizing fibers includes applying a decolorizing composition according to the invention to dyed fibers and allowing the composition to act on the fibers for a sufficient time to remove dyed color from the dyed fibers. The decolorizing composition for fibers dyed with an oxidation hair dye composition and/or direct-dyeing hair dye compounds contains a combination of one or more .alpha.-oxo-carboxylic acids and/or physiologically compatible .alpha.-oxocarboxylic acid salts with at least one reductone, or with at least one reductone and at least one thiol compound, or with at least one reductone and at least one sulfite compound, or with at least one reductone and at least one thiol compound and at least one sulfite compound. A multi-part kit for repeatedly dyeing and subsequently decolorizing fibers, especially human hair, contains both a dye composition for dyeing the fibers and the above-described composition for reductive decolorizing of the dyed fibers.

Abstract: The composition for oxidative dyeing of keratin fibers has a pH of from 6 to 9.5 and contains a developer/coupler combination, an oxygen-oxidoreductase/substrate system and a peroxidase. The coupler substance includes a substituted m-phenylenediamine of formula I ##STR1## wherein R.sup.1 is a C.sub.1 - to C.sub.6 -alkoxy group, an unsubstituted alkyl group having from one to six carbon atoms, a C.sub.1 - to C.sub.6 -alkyl group substituted with a hydroxy group, a halogen atom or a C.sub.1 - to C.sub.6 -alkoxy group; and R.sup.2, R.sup.3 are each, independently of each other, a hydrogen atom, another unsubstituted C.sub.1 - to C.sub.6 -alkyl group, an unsubstituted C.sub.1 - to C.sub.6 -ether group having at most two oxygen atoms, another C.sub.1 - to C.sub.6 -alkyl group substituted with a hydroxy group, a halogen atom or a C.sub.1 - to C.sub.6 -alkoxy group substituent or an ether group substituted with a hydroxy group, a halogen atom or a C.sub.1 - to C.sub.