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.