All inks are neutral or near neutral and very safe to pens except the Kot-massi series. Inks are made for free flowing and clog free writing. Some inks like Sea & Storm may be more flowing which is specifically used for a dry writing pen. If you...
Permanent Blue black ( Iron gall Ink), The Earth ( Changes color from Red to Brown) , Ochre ( changes color from Purple to Green) , Rain Forest ( Dark Green), Permanent Blue Black – Can NOT be washed out or bleached using any chemicals....