Derivan Fabric Screen Ink is a safe, non-toxic screen-printing ink created for use on fabric, perfect for silk screening and tie-dyeing projects. Its water-based formula makes it suitable for classrooms, studios, and home use without the risk of exposure to harsh solvents such as white spirits, turpentine or thinners. The ink washes out easily with water before heat setting, and once heat set, it provides excellent rub resistance and long-lasting lightfastness.