Dr. Ph.martin's Radiant W/c Inks
Dr. PH Martin's Radiant Concentrated Water Colors can be used with a brush, pen, or airbrush. A brilliant, concentrated watercolour DYE, this product is for work that is intended to be reproduced such as cartooning, manga, anime, illustrations, and graphic arts. Works best with paper, illustration board, and silk (with additives).
The colours will fade from sunlight or fluorescent light (UV), but it will not fade in a portfolio, or under incandescent lights. Not lightfast. Not waterproof. Non-toxic.