Hansa Yellow, 2 oz These are professional quality powder pigments, and are selected for purity, permanence, brilliance and working characteristics. All of these pure, very finely ground, light-proof dry colors mix easily with paints, varnish, lacquers, epoxy coatings and adhesives. Note: - Avoid inhalation of the pigments dust and skin contact for long periods. Many of these pigments contain toxic metals.