Alizarin Crimson Pigment Stick A revolutionary development in painting, R&F Pigment Sticks are oil paint with just enough natural wax added to maintain a solid stick form. They are richly pigmented, with a lipstick soft consistency that gives them the same fluidity, subtlety, and durability as traditional oil colors, with the gestural spontaneity of direct drawing. Hard to mill without using stearate additives. We don't use them because stearates dull the color. Our milling is difficult and tricky, but the result is pure, luminous ruby-red undertone. Less harsh than Quinacridones. Not sufficiently light-fast in tints