Gelly Roll rollerball pen contains a pigment-based archival-quality ink that is chemically stable waterproof and fade-resistant. Delivers consistent ink flow to the last stroke. No smears feathers or bleed-through on most papers. Rollerball pen meets ACMI nontoxicity standards (AP seal). Ink is not recommended for use on fabrics intended to be washed on food service or ceramics that are washed and not evaluated for cosmetic use on skin.