This luxurious line of paint has been recently reformulated to bring artists the same unrivaled quality as Permalba White. All colors are densely pigmented with a lightfast rating of 1 (excluding iridescents). Lighter shades are binded with safflower oil to minimize yellowing. New formulations of carefully selected pigments yield clear, crisp hues without muddying when mixed with white or other colors. They carry a ACMI non-toxic seal and each tube is labeled with pigment content, lightfast rating and opacity information.