Abstract: The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamine compounds, to a composition for dyeing keratin fibers, for instance human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one ortho- and/or meta-substituted N-alkylhydroxylated secondary para-phenylenediamine, to a process for dyeing keratin fibers comprising applying this composition, and also a dyeing “kit.

Abstract: The present disclosure relates to novel N-alkylpolyhydroxylated 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 medium that is suitable for dyeing, at least one such secondary para-phenylenediamine. The present disclosure also relates to processes for dyeing keratin fibers with the compositions according to the present disclosure, and to dyeing kits containing such compositions.

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 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 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 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 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 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 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 disclosure provides para-phenylenediamine compounds, dye compositions comprising the para-phenylenediamines, and processes for dyeing keratin fibers using the compositions.

Abstract: The invention relates to triazacyclononane derivatives substituted on at least one of the nitrogen atoms with a substituted or unsubstituted 4?-aminophenyl group, and also to the use thereof as oxidation bases for dyeing keratin fibres and in particular human keratin fibres such as the hair. The invention also relates to a composition for dyeing keratin fibres, and in particular human keratin fibres such as the hair, comprising at least one triazacyclononane derivative substituted on at least one of the nitrogen atoms with a 4?-aminophenyl group, as oxidation base, and also to the dyeing process using this composition. The present invention makes it possible in particular to obtain strong, sparingly selective and fast coloration of keratin fibres.

Abstract: The subject of the invention is a composition for the oxidation dyeing of keratinous fibres, 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 fibres using this composition, and the novel compounds of the type mentioned above.

Abstract: The subject of the invention is a composition for the oxidation dyeing of keratinous fibers, and in particular human keratinous fibers such as hair, comprising, as oxidation base, a 1-(4-aminophenyl)pyrrolidine substituted at the 2- and 4-positions. The subject of the invention is also the method for the oxidation dyeing of keratinous fibers using these compositions.

Abstract: The disclosure relates to novel para-phenylenediamine derivatives containing a cyclic diaza group, substituted with a cationic radical, as well as to the dye compositions comprising them, and to the method of dyeing keratin fibers using these compositions. Tthe present invention may make it possible to obtain a chromatic, strong, relatively unselective and fast coloration on keratin fibers.

Abstract: The present disclosure relates to a novel a para-phenylenediamine derivative substituted with a pyrrolidinyl group of formula (I) and the addition salts thereof. The present disclosure also relates to a dyeing composition for keratin fibers comprising the paraphenylene derivative as at least one oxidation base, and to a process for dyeing keratin fibers and a multi-compartment kit using the claimed dye composition. Such a composition makes it possible to obtain a chromatic, powerful, unselective and fast coloration of keratin fibers.

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: Novel pyrrolidinyl-substituted para-phenylenediamine derivatives comprising a cationic radical, the dye compositions comprising them and the process for dyeing keratin fibers using these compositions, making it possible to obtain a chromatic, powerful, unselective and fast coloration of keratin fibers.

Abstract: The invention relates to novel bis-para-phenylenediamine derivatives containing a pyrrolidyl group substituted with a cationic radical, to dye compositions containing them and to the process of dyeing keratin fibres using these compositions.

Abstract: The subject of the invention is a composition for the oxidation dyeing of keratinous fibers, and in particular human keratinous fibers such as hair, comprising, as oxidation base, a 1-(4-aminophenyl)-pyrrolidine substituted at the 2-position.

Abstract: The subject of the invention is a composition for the oxidation dyeing of keratinous fibers, and in particular human keratinous fibers such as hair, comprising, as oxidation base, a 1-(4-aminophenyl)-pyrrolidine substituted at least at the 2- and 3-positions.