Turner Acryl Gouache is fully pigmented and totally free of heavy metals. Most colors are light fast with the exception of their decorative and fluorescent ranges. Due to the small amounts of binder, there is little color shift after painting and the brilliance continues through the drying process making painting compositions more rewarding. Their historic Japanese colors allow compositions in subtle colors that are not available anywhere else. The rich ultra black and super opaque white are among the finest colors ever produced in the world. Turner from Japan makes the highest quality and most cherished colors and is used by the most famous artists and illustrators from that region of the world and around the world.