A process for improving the color yield and the wet-fastness properties of dyeings produced on cellulose fibrous material with anionic dyes which process comprises treating the cellulose material before, during or after dyeing, with a fluorine-containing cationic compound of the formula ##STR1## WHEREIN B represents a triazine or pyrimidine radical,W represents a reactive fluorine atom,Z represents halogen, lower alkyl, phenyl, lower alkoxy, lower alkylthio, phenoxy, phenylthio, --NH.sub.2, or the group of the formula ##STR2## EACH OF Ar.sub.1 and Ar.sub.2 independently represents an aromatic radical,Each ofR.sub.1 and R.sub.2 independently represents hydrogen, lower alkyl or hydroxy-lower alkyl,Each ofX, x.sub.1, x.sub.2, y.sub.1, y.sub.2, v.sub.1 and V.sub.2 independently represents lower alkyl, benzyl, or lower alkyl which is substituted by halogen, hydroxyl or cyano, and X also represents phenyl or methylphenyl, orEach of the pair of substituentsX.sub.1 and X.sub.2 and Y.sub.1 and Y.sub.2, together with the nitrogen atom to which it is attached, represents a 5- or 6-membered heterocyclic radical,An.sup..crclbar. represents the anion of an organic or inorganic acid, andN is 1 or 2.