The best selection of solid colors available, made to the exacting 100% archival standards of the world’s top conservators, and designed to provide you with every tint, tone and shade you need. Featuring the unparalleled and proven protection of Artcare technology. Artcare is lightfast, bleed, and humidity resistant and absorbs and traps pollutants. It meets quality standards of the Fine Art Trade Guild. Artcare is buffered, and is acid and lignin free.