Acrylic paint: Under the name "Amsterdam Acrylic Remover" Royal Talens supplies a solvent with which dried-in acrylic paint can be broken down again. Pour so much of the liquid into a small glass jar or bottle that the hair bundles and part of the ferrule can stand in the solvent. Now soak the brushes for ± an hour, clean them with soap and water and rinse them with water. CAUTION: Do not put the brushes too deep in the solvent as the lacquer on the handle may also dissolve! Acrylic remover is completely biodegradable.
Oil paint: Dried oil paint can only be broken down in very aggressive solvents such as xylene. Due to the harmfulness of these solvents, they are not sold by Royal Talens. The long drying time of oil paint gives the painter enough time to clean the brushes.