A variety of fine art inkjet papers meet the needs of professional photographers and artists. These papers share many characteristics with traditional watercolor, printmaking, and photographic papers. Fine art inkjet papers are designed to meet similar standards for longevity as traditional fine art papers: they should have a neutral pH, be lignin-free, and not include optical brighteners. Fine art inkjet papers differ from traditional fine art papers, in that they include coatings engineered to receive and hold ink. Fine art papers are usually made of rag pulp (100% cotton being the most common) but may also be have an alpha-cellulose base.