ASTM Lightfastness 1 (Excellent); Pigment(s): PBr7 (Natural Iron Oxide containing Manganese) and PW6 (Titanium Dioxide Rutile) UNIQUE PAN FORMAT for easy, even application with Sofft Tools MIX AND BLEND dry color like paint! PanPastels are easily blended to create color mixes and smooth gradations LOW DUST for a cleaner working environment and less waste Made in the USA with globally sourced materials by an employee-owned company with more than 40 years of experience making paint for professional artists