Abstract: The present invention relates to novel secondary para-phenylenediamines bearing an alkoxy group, to a process for preparing them, and to their use in the oxidation dyeing of hair. The invention also relates to a composition for dyeing keratin fibers, in particular human keratin fibers such as hair, containing, in a medium that is suitable for dyeing, at least one secondary para-phenylenediamine. Further, the invention relates to a process for dyeing keratin fibers using the aforementioned composition, and to a dyeing kit containing the composition.

Abstract: The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamines and a process for making these compounds. The present disclosure further relates to a composition for dyeing keratin fibers, including human keratin fibers such as hair, containing, in a medium that is suitable for dyeing, at least one such N-alkylhydroxylated secondary para-phenylenediamine, a process for dyeing keratin fibers using the composition, and a device or kit for dyeing keratin fibers that contains the composition.

Abstract: The present disclosure is directed to a family of N-alkylheteroaryl secondary para-phenylenediamines, to their preparation, and to a cosmetic composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least one N-alkylheteroaryl secondary para-phenylenediamine. Further disclosed herein is a process of dyeing keratin fibers, a ready-to-use composition, and a kit comprising at least two compartments.

Abstract: The present disclosure relates to a family of double para-phenylenediamines joined by a linkage comprising an aromatic group and a process for the dyeing of keratin fibers. These double para-phenylenediamines of formula (I) can be used as oxidation base for the dyeing of keratin fibers. Also disclosed are methods of dyeing, methods of making, and dyeing “kits.

Abstract: The present application relates to a novel family of double para-phenylenediamines joined by a linker arm substituted with one or more carboxylic radicals and/or derivatives and to the use thereof for the dyeing of keratin fibres. These novel para-phenylenediamines are useful as oxidation bases for the dyeing of keratin fibres.

Abstract: The present disclosure relates to double secondary para-phenylenediamine dye compounds. The present disclosure further relates to a dye composition comprising at least one double secondary para-phenylenediamine compound, a process for dyeing keratin fibers using the composition, and a kit for dyeing keratin fibers comprising a separate composition comprising an oxidizing agent.

Abstract: The present disclosure relates to novel secondary para-phenylenediamines having a carboxyl group. The present disclosure further relates to a dye composition comprising at least one secondary para-phenylenediamine for dyeing keratin fibers, such as human hair, a process for preparing the composition, and a process and kit for dyeing keratin fibers using the composition.

Abstract: The present disclosure relates to a novel family of sulfur-containing secondary para-phenylenediamines, to processes for preparing them, to compositions for dyeing keratin fibers, for example keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least such one sulfur-containing secondary para-phenylenediamine. The present disclosure also relates to processes for dyeing keratin fibers with the compositions according to the present disclosure and to multi-compartment dyeing kits containing such compositions.

Abstract: The present disclosure is directed to a family of N-alkylheteroaryl secondary para-phenylenediamines, to their preparation, and to a cosmetic composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least one N-alkylheteroaryl secondary para-phenylenediamine. Further disclosed herein is a process of dyeing keratin fibers, a ready-to-use composition, and a kit comprising at least two compartments.

Abstract: The present disclosure relates to novel N-alkylamino secondary para-phenylenediamines; a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a medium suitable for dyeing, at least one such N-alkylamino secondary para-phenylenediamine; a process for dyeing keratin fibers comprising applying this composition; and the uses of this composition in the form of a dyeing “kit”.

Abstract: The present disclosure relates to a novel family of N-heteroaryl secondary para-phenylenediamines, to their preparation, to their use for dyeing the hair and to a dye composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least one heteroaryl secondary para-phenylenediamine. The disclosure also relates to the process using this composition, to its use and to the multi-compartment device and dyeing “kit”.

Abstract: The present disclosure relates to novel secondary para-phenylenediamine compounds comprising N-alkylfluorine, to a process for preparing them, to a composition for dyeing keratin fibers, for example human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one secondary para-phenylenediamine compound comprising N-alkylfluorine as disclosed, to a process for dyeing keratin fibers with the disclosed compositions, and also to a dyeing “kit” comprising the dyeing compositions.

Abstract: The subject of the invention is a composition for the oxidation dyeing of keratinous fibers, in particular human hair, comprising an oxidation base of the para-phenylenediamine type, substituted with a diazacycloheptane radical. The invention also relates to the method for dyeing fibers using this composition, and the novel compounds of the type mentioned above.

Abstract: Disclosed herein is a composition for the dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one 3-amino pyrazolo-[1,5-a]-pyridine derivative or one of its addition salts and a method employing this derivative. The composition of the present disclosure makes it possible to obtain coloration in various shades that is powerful, chromatic, and aesthetic, with low selectivity and with good resistance to various aggressive factors to which the hair may be subjected, such as shampoos, the light, sweat and permanent shaping.

Abstract: In one embodiment, the disclosure relates to a composition for dyeing keratin fibres, for example, human keratin fibres such as the hair, comprising at least one para-phenylenediamine derivative substituted with a diazacyclohexane or diazacycloheptane ring, the nitrogen in position 4 of which is a quaternary ammonium. The present disclosure may make it possible, for example, to obtain at least one of chromatic, strong, relatively unselective, fast coloration of keratin fibres.

Abstract: Disclosed herein are 2,6-disubstituted para-phenylenediamine compounds chosen from compounds of formula (I) and the salts and solvates thereof: Also disclosed herein are the corresponding intermediate compounds. Further disclosed herein is a composition for the oxidation dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one para-phenylenediamine compound. Still further disclosed herein are oxidation dyeing processes comprising applying the composition to keratin fibers.

Abstract: The invention concerns novel dyeing compositions for keratinous fibers comprising at least a paraphenylenediamine derivative with pyrrolidinyl group as oxidation base, a dyeing method and a dyeing kit using said composition.

Abstract: Disclosed herein is a novel family of double para-phenylenediamines joined by a linkage comprising an atom chosen from sulphur and nitrogen. Also disclosed herein is a dyeing composition comprising at least one double para-phenylenediamine joined by a linkage comprising an atom chosen from sulphur and nitrogen. Further disclosed herein is a method for dyeing keratin fibers comprising applying such a composition to the keratin fibers. A multi-compartment device comprising at least one first compartment containing at least one dyeing composition of the present disclosure and at least one second compartment containing at least one oxidizing composition is also disclosed herein.

Abstract: Disclosed herein is a novel family of double para-phenylenediamines joined by a linker arm comprising at least one substituent chosen from hydroxyl, alkoxy, and/or amino substituents. Also disclosed herein is a dyeing composition comprising, in a medium suitable for dyeing, at least one para-phenylenediamine joined by a linker arm comprising at least one substituent chosen from hydroxyl, alkoxy, and/or amino substituents. Further disclosed herein is a method for dyeing keratin fibers comprising applying such a dyeing composition to the keratin fibers. A multi-compartment kit comprising at least one dyeing composition of the present disclosure and at least one oxidizing composition is also disclosed herein.

Abstract: The present application relates to a novel family of double para-phenylenediamines joined by a linker arm substituted with one or more carboxylic radicals and/or derivatives and to the use thereof for the dyeing of keratin fibres. These novel para-phenylenediamines are useful as oxidation bases for the dyeing of keratin fibres.