Colorbox Cat’s Eye inks are designed with pointed edges so they can be used to apply ink like it was a tool. Pigment based archival quality ink. ColorBox inks are ideal for all papercraft projects, especially where direct-to-paper, embossing and resist techniques are used. They’re unsurpassed for stamping or color blending on absorbent papers where sharp detail and archival quality are desired. ColorBox classic pigment inks require heat setting or embossing on coated, glossy or non-absorbent papers. Acid-free.