These are chemical products with a strong cationic charge in the molecule, which can modify the dyeing affinity between fibre and the chemical classes of dyestuffs.

Cotton fabrics can usually be dyed with direct dyestuffs, either reactive or indanthrene, but if they are cationized beforehand, you can:

  • Dye with dyestuff classes specific for other fibres, such as acids, pre-metallised dyes or pigments.
  • Dye with dyestuff classes traditional for cotton, but achieve special and complex fashion effects at the same time.