Formulations for coloring keratin-containing fibers with Isophthalaldehyden

It is an agent for dyeing keratinous fibers, in particular human hair, claimed comprising at least a combination of DOLLAR A A. at least one dicarbonyl compound with the formula I, wherein DOLLAR DOLLAR F1 A E R and R · 1 · · 2 · independently represent a hydrogen atom, a halogen atom, a C¶1¶ C¶6¶-alkyl group, a C¶2¶-C¶6¶ alkenyl group, a C¶1¶ C¶6¶-alkoxy group, a C¶ 1¶-C¶6¶-Hydroxyalkygruppe, a C¶2¶-C¶6¶ polyhydroxyalkyl group, a hydroxy-C¶1¶ C¶6¶ alkoxy group, a hydroxy group, a sulfonic acid group, a carboxy group, a nitro group, a group -NR x 5 x x 6 x R, where R and R x 5 x x 6 x are independently a C¶1¶ C¶6¶-alkyl group, a C¶2¶-C¶6¶- alkenyl group, a C¶1¶-C¶6¶-hydroxyalkyl group, a C¶1¶-C¶6¶-dialkylamino-C¶1¶ C¶6¶ alkyl group or an aryl-C¶1¶ C¶ 6¶ alkyl group, or R and R · 5 · X 6 X together with the nitrogen atom a n 5-, 6- or 7-membered ring, DOLLAR A or the radicals R x 1 x and R x 2 x together form a 5-, 6- or 7-membered, fused-on, aliphatic or aromatic, carbocyclic or heterocyclic rings, DOLLAR a E R · 3 · and R * 4 * are each independently a C¶1¶ C¶6¶-alkyl group, a C¶2¶-C¶6¶ alkenyl group, a C¶1¶-C¶ 6¶-hydroxyalkyl group, a C¶1¶-C¶6¶-dialkylamino-C¶1¶ C¶6¶ alkyl group or an aryl C¶1¶ C¶6¶-alkyl group or form together with the nitrogen atom a 5-, 6- or 7-membered ring, DOLLAR a or physiologically acceptable salts and DOLLAR a B. ...