Abstract: The invention relates to a method for dyeing keratin fibers, especially human hair. The inventive method comprises the following steps: optionally applying a pretreatment agent M1 to the fiber, using a dye M2 on the fiber which is optionally mixed immediately before application to the fiber from a component M2a, containing at least one oxidative dye pre-product of the developer type and/or an indole and/or indole derivative and a component M2b, containing an oxidative dye and/or an enzyme. If desired, a third agent M3 is added to the individual agents M2a or M2b before mixing them or to the mixture M2, and said dye M2 is rinsed from the fiber after a period of 5–10 minutes. At least one of the agents M1, M2a, M2b or M3 contains a compound from the vitamin B6 group. The invention further relates to hair pretreatment agents, to agents for dyeing keratin fibers, to their packing in corresponding kits and to the use thereof.

Abstract: There are provided compositions for improving the washfastness and color intensity of colored fibers, especially keratin fibers, which comprise a) at least one sugar surfactant chosen from the group consisting of alkyl and alkenyl oligoglycosides or fatty acid N-alkylpolyhydroxyalkylamides and b) at least one fatty acid partial glyceride.

Abstract: Keratinic fibers are dyed with a two-component agent for tinting and/or dyeing keratinic fibers comprising a first preparation (A) comprising at least one direct-absorbing dye and/or at least one precursor of a nature-analogous dye, and a second preparation (B) containing at least one conditioning substance, wherein the two preparations are packaged separately from one another in the chambers of a two-chamber tube. The chamber openings in the tube are oriented in such a way that the contents of each of the chambers are emitted simultaneously into a common space.

Abstract: Keratinic fibers are colored by a two-component composition for coloring keratinous fibers comprising a first preparation (A) comprising at least one oxidation dye precursor and a second preparation (B) comprising at least one care component, wherein the two preparations are packaged separately from one another in the compartments of a two-compartment tube. The compartment openings in the tube are oriented in such a way that the contents of each of the chambers is emitted simultaneously into a common space.

Abstract: Keratinic fibers are colored by a two-component composition for coloring keratinous fibers comprising a first preparation (A) comprising at least one oxidation dye precursor and a second preparation (B) comprising at least one care component, wherein the two preparations are packaged separately from one another in the compartments of a two-compartment tube. The compartment openings in the tube are oriented in such a way that the contents of each of the compartments are emitted simultaneously into a common space.

Abstract: There are provided topical hair care compositions for improving the structure and strength of hair keratin and the fastness to washing of hair colors which contain vitamin B6 derivatives of the formula (1) or physiologically compatible salts thereof.

Abstract: The invention relates to agents for coloring keratin fibers which, in a cosmetically acceptable carrier, contains: (A) at least one colorant precursor; (B) at least one enzyme, which can catalyze the oxidation of the colorant precursors; (C) at least one sugar surfactant selected from the group that is formed from alkyl oligoglycosides, alkenyl oligoglycosides and from fatty acid N-alkyl-polyhydroxyalkylamides, and; (D) at least one reducing agent. The inventive agents are characterized by their good ability to color and by their action that is gentle on hair.

Abstract: The present invention relates to a composition for coloring keratin fibers containing at least one dye precursor and a choline-based oxidase system. The present invention also relates to a process for coloring keratin containing fibers using the composition of the present invention.

Abstract: The invention relates to a method for dyeing keratin fibers, especially human hair. The inventive method comprises the following steps: optionally applying a pretreatment agent M1 to the fiber, using a dye M2 on the fiber which is optionally mixed immediately before application to the fiber from a component M2a, containing at least one oxidative dye pre-product of the developer type and/or an indole and/or indole derivative and a component M2b, containing an oxidative dye and/or an enzyme. If desired, a third agent M3 is added to the individual agents M2a or M2b before mixing them or to the mixture M2, and said dye M2 is rinsed from the fiber after a period of 5-10 minutes. At least one of the agents M1, M2a, M2b or M3 contains a compound from the vitamin B6 group. The invention further relates to hair pretreatment agents, to agents for dyeing keratin fibers, to their packing in corresponding kits and to the use thereof.

Abstract: There are provided compositions for improving the washfastness and color intensity of colored fibers, especially keratin fibers, which comprise

Abstract: The invention relates to the use of vitamin B6 derivatives, preferably pyridoxine, pyridoxal, pyridoxal-5′-phosphate and pyridoxamine for prevention of damage to keratin fibres.

Abstract: There are provided novel preparations for tinting or dyeing hair which contain vitamin B6 derivatives.

Abstract: There are provided topical hair care compositions for improving the structure and strength of hair keratin and the fastness to washing of hair colors which contain vitamin B6 derivatives of the formula (1) or physiologically compatible salts thereof.

Abstract: Agents for dyeing keratin fibers are claimed which, in a cosmetically acceptable carrier, comprises at least one dye precursor and a phenol-oxidizing enzyme which can be obtained from Stachybotrys species.

Abstract: A colorant for coloring keratin fibers wherein the colorant contains a substantive dye which is a 4-nitroaniline derivative corresponding to formula (I): 1

Abstract: The invention relates to oxidation colorants which are particularly suitable for coloring keratin fiber and to a method of coloring such fiber.

Abstract: A hair treatment formulation for coloring human hair comprising a substantive dye or oxidation dye precursors and a hair care agent comprising a compound of the formula (I): ##STR1## wherein R.sup.1 is hydroxy, C.sub.1 to C.sub.3 alkoxy, or a group of the formula (II): ##STR2## wherein R.sup.2 is hydrogen or C.sub.1 to C.sub.3 alkyl, R.sup.3 is hydrogen or methyl, R.sup.4 is hydroxy, --(CH.sub.2).sub.3 --NH.sub.2, 4-hydroxyphenyl, or H.sub.2 PO.sub.3, R.sup.5 is hydroxy, --CH.sub.2).sub.3 --NH.sub.2, or 4-hydroxyphenyl, and R.sup.6 is hydrogen or C.sub.1 to C.sub.3 alkyl, including physiologically compatible salts of organic or inorganic bases of said compounds of formula (I). The coloring formulations according to the invention condition and improve the structure of hair, eliminating the need for the usual post-coloring treatments.

Abstract: A diaminoalkane of general formula (I) in which R.sub.1 to R.sub.10 stand independently of each other for hydrogen, a (C.sub.1 -C.sub.4)-alkyl group, a hydroxy-(C.sub.2 -C.sub.3)-alkyl group, a (C.sub.1 -C.sub.4)-alkoxy-(C.sub.2 -C.sub.3) alkyl group, an amino- (C.sub.2 -C.sub.3) alkyl group or a 2,3-dihydroxypropyl group and n is a number from 1 to 6 with the proviso that the --NR.sub.1 R.sub.2 and --NR.sub.7 R.sub.8 groups are either in positions 4 and 4' or in positions 5 and 5'. Salts of the diaminoalkane which are physiologically compatible with inorganic and organic acids. Method of coloring keratin fiber.

Abstract: Compounds of the formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another may represent a hydrogen atom, a (C.sub.1-4) alkyl group, a hydroxy (C.sub.2-3) alkyl group, an alkoxy (C.sub.2-3) alkyl group, an amino (C.sub.2-3) alkyl group or a 2,3-dihydroxypropyl group and R.sub.5 and R.sub.6 independently of one another may represent hydrogen or a (C.sub.1-4) alkyl group, are made by reacting 2,4-dinitrohalobenzenes with 4-hydroxymethyl-1,3-dioxolanes under alkaline conditions to form 4-(2,4-dinitrophenoxymethyl)-1,3-dioxolanes, which are further reduced to the compounds of formula (I). In an alternate process, the 4-hydroxymethyl-1,3-dioxolanes are reacted with 4-halo-3-nitranilines or 2-halo-5-nitranilines, the product further reacted first under basic conditions with chloroformic acid ester followed by treatment with strong base, alkylation or alkoxylation, reduction, and optionally further alkylation of alkoxylation to arrive at the compounds (I).