Use of tetra-azapentamethine compounds as direct dyeing...

Details Use of tetra-azapentamethine compounds as direct dyeing... Use of tetra-azapentamethine compounds as direct dyeing...

2007-12-25

2007-12-25

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

C008S407000, C008S565000, C008S567000, C008S568000, C008S570000, C008S571000, C008S572000, C008S573000, C008S654000, C008S655000, C546S184000, C548S318100, C548S400000, C132S202000, C132S208000

Reexamination Certificate

active

10489855

ABSTRACT:
The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

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