Pigma ink, invented by Sakura over 30 years ago, is a trusted, archival-quality permanent ink used worldwide. Its pigment-based, fade-resistant and chemically stable formula will not bleed or run once dry, even when exposed to liquids. Nearly impossible to alter, it is ideal for legal documents, record keeping, and scientific use. With a wide range of point sizes, Pigma Micron is equally valued by artists, illustrators, architects, and crafters, ensuring precise lines and long-lasting results.