Calligraphy pen is designed for calligraphers of any skill level. Writes on glass, wood, porcelain, plastic, paper and metal. Paint flows from the chamber directly to the tip of the marker. A quick shake before writing mixes the color. PenTouch Calligrapher Pen contains archival-quality ink that is chemically stable, waterproof, and fade-resistant. Permanent ink is xylene-free and low-odor. Calligrapher pen meets ACMI nontoxicity standards. Not recommended for use on fabrics intended to be washed, on food service or ceramics that are washed. Not evaluated for cosmetic use on skin.