Product Description Slightly off key and acidic next to the other yellows. It creates hard accents. Next to cadmium greens it is more on key and turns sweeter. Encaustic paint is composed of pigment, beeswax and resin. It is applied molten to a surface and fused to create a lustrous enamel effect. It is among the most durable of all artists’ paints, since wax is impervious to moisture and over time retains all the freshness of a newly finished work.. Once the surface has cooled, the paint has reached a permanent finish, but the painting can also be revised and reworked at any time — whether seconds or years later. Encaustics need to be applied to a rigid substrate such as a panel or hard board. Warning for CA Residents Prop 65: WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov