The Caran d’Ache Luminance 6901 collection offers the highest lightfastness and the smoothness of a permanent lead. Every shade has been formulated using finely-ground pigments chosen for their purity, intensity, and resistance to UV damage. Artists, designers, architects, stylists, art directors, interior designers and so on – all creative professionals will appreciate the technical features, aesthetics, and ergonomics of Luminance 6901.