This ink is acid-free, archival and fade-resistant. It is waterproof for watercolors and markers and dries permanently and quickly on most papers
HERO ARTS-Hero Hues Dye Ink Pad: Black. The subtle washes of mid- tone color is ideal for backgrounds and stamp layering! Dries permanently and quickly on most papers. The pad is raised to accommodate any stamp size. This package contains one 4×3 inch dye ink pad that is waterproof for watercolors and markers. Acid free and archival safe. Conforms to ASTM D 4236. Made in USA.