Pigma Micron Pen is ideal for graphic art, scrapbooks, archival recording, illustrations, freehand art, rubber stamps, cartooning and fabric design on 100 percent cotton fabric for best results. The formulation of pigment-based ink is more complex and stable than dye-based inks. Archival-quality ink is permanent, fade-resistant, waterproof and chemical proof. Will not smear or feather when dry. Does not bleed through most papers. Meets ASTM and ACMI nontoxicity standard. Pigma Ink is not recommended for use on fabrics intended to be washed and has not been evaluated for cosmetic use on skin.