Sepia cuttlefish ink is a beautiful brown pigment.
Sepia being composed mostly of melanin, has the same color as the principal human skin brown pigment. Painting with natural cuttlefish sepia is painting with a natural skin pigment.
Authentic sepia ink is prepared from the dried ink sacs of the common cuttle, Sepia officinalis. Like naturally derived organic colorants, it is usually considered as not lightfast. But it is very solid.