AZOMETHINIC DIRECT COLORANTS OR REDUCED PRECURSORS OF COLOLANTS OBTAINED FROM 2-AMINO-3-HYDROXYPYRIDINE, PROCESS FOR CAPILLARY COLORING FROM THESE COLORANTS AND PRECURSORS

摘要

The invention relates to the dyeing of keratinous fibers using azomethine direct dyes or reduced precursors of azomethine direct dyes obtained from 2-amino-3-hydroxypyridine.The invention relates to a dyeing composition comprising at least one a direct dye azométhinique, or a reduced precursor of azométhinique direct dye, a method of dyeing keratinous fibers, using said composition, and their uses in the dyeing of keratin fibers.This composition makes it possible to obtain a particularly stable and tenacious coloration .