CLEARSNAP-ColorBox pigment inks are water based and formulated to stamp on absorbent papers. But because they are slow drying they may be used for embossing techniques on coated or nonabsorbent papers. They also have a longer shelf life. The rich thick inks are fade resistant and do not bleed. The raised inking surface is made of quality soft foam for optimum inking results. These inks are acid free pH balanced and archival quality. Made in USA.