Abstract:
Disclosed herein are a composition for dyeing keratinous fibers, for example, human keratinous fibers such as hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolone derivative and a method using the composition. Further disclosed herein are amino-N,N-dihydropyrazolone derivatives and the addition salts thereof and diamino-N,N-dihydropyrazolone derivatives and the addition salts thereof, as well as the methods for preparing these compounds.
Abstract:
The present disclosure relates to a novel dyeing composition for dyeing human keratinous fibers, such as hair, comprising at least one dicationic diazo dye of formula (I): [W1—N═N—W2—W3—(W4—W5)p-]2-L Formula (I) as well as the process for dyeing hair using same. Certain compounds of formula (I) are also disclosed herein.
Abstract:
Disclosed herein are a composition for dyeing keratinous fibers, for example, human keratinous fibers such as hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolone derivative and a method using the composition. Further disclosed herein are amino-N,N-dihydropyrazolone derivatives and the addition salts thereof and diamino-N,N-dihydropyrazolone derivatives and the addition salts thereof, as well as the methods for preparing these compounds.
Abstract:
The invention relates to a dye composition that is useful for dyeing keratin fibres, containing at least one oxidation base and at least one coupler of the 6-alkoxy-2,3-diaminopyridine type in which the amino radical in position 2 is a disubstituted amino radical, to the use of this composition for dyeing keratin fibres and to the dyeing process using this composition. The invention also relates to novel 6-alkoxy-2,3-diaminopyridine compounds that are useful as couplers.
Abstract:
The invention relates to a dye composition that is useful for dyeing keratin fibres, containing at least one oxidation base and at least one coupler of the 6-alkoxy-2,3-diaminopyridine type in which the amino radical in position 2 is a disubstituted amino radical, to the use of this composition for dyeing keratin fibres and to the dyeing process using this composition. The invention also relates to novel 6-alkoxy-2,3-diaminopyridine compounds that are useful as couplers.
Abstract:
The invention concerns a novel dyeing composition for dyeing keratinous fibers, in particular human hair, comprising a dicationic diazo dye of formula (I): W1—W2—N═N—W3—L—W4—N═N—W5—W6, as well as the dyeing method using said composition and the novel compounds of formula (I).
Abstract:
Dyeing compositions for the dyeing of keratin fibers comprising at least one oxidation base chosen from formula (I), as defined herein and addition salts thereof. The use of the compositions for the dyeing of keratin fibers. Dyeing processes employing the compositions. Novel 2,5-diaminopyridine compounds and addition salts thereof and their use as oxidation bases.
Abstract:
The present invention relates to a composition for dyeing keratin fibres, in particular human hair, containing, in a medium which is suitable for dyeing: as coupler, at least one compound of formula: or one of the addition salts thereof with an acid, in which: R2 denotes, in particular, hydrogen, halogen, alkoxy, aryloxy, acetylamido, etc. R1 and R3, which are independent, denote, in, particular: hydrogen, alkyl, aryl, a heterocycle, etc. it being understood that when R2 and R1 simultaneously represent a hydrogen atom, then R1 is other than a hydrogen atom, a C1-C5 alkyl radical or a phenyl radical; and at least one oxidation base.
Abstract:
The invention concerns a composition for dyeing keratin fibres, in particular human keratin fibres such as hair comprising at least one pyrazolin-4,5-dione of formula (I) and at least one aromatic primary amine. Said composition enables the dyeing of keratin fibres without an oxidising agent in shades which are strong, varied, resistant and less selective than those of prior art. The invention also concerns dyeing methods and devices using said composition.
Abstract:
The invention relates to novel cationic 2-acylaminophenols of formula (I) comprising at least one cationic group, to their use as couplers for the oxidation dyeing of keratin fibers, and in particular of human keratin fibers such as the hair, to oxidation dye compositions containing them in combination with at least one oxidation base, and to oxidation dyeing processes using them.