DYEING COMPOSITION COMPRISING AT LEAST ONE DIRECT DYE OF AZO-PYRIDINIO-PYRIDONE FAMILY AND AT LEAST ONE DIFFERENT SYNTHETIC DYE AND PROCESS FOR DYEING KERATIN FIBER

摘要

PROBLEM TO BE SOLVED: To provide a dyeing composition comprising direct dyes for obtaining satisfactory color tone uptake on keratin fibers, irrespective of the degree of sensitization of the keratin fibers, allowing access to natural, very strong, sparingly selective coloration in varied dark shades and exhibiting a very good level of fastness without changing the color tone over time. SOLUTION: The dyeing composition comprises, as the direct dyes, (a) at least one dye of the azo-pyridinio-pyridone family corresponding to formula (I) and (b) at least one synthetic dye different from the compound of formula (I). COPYRIGHT: (C)2007,JPO&INPIT