Encaustic is an ancient art-making method that uses molten beeswax mixed with natural tree resin. The resulting hot wax medium is both as a carrier for pigments and as an adhesive for collage elements and found objects. The paints are used warm - and built up layer by layer. Each layer needs to be fused to the layer beneath using a torch or heat gun.
In my painting, I frequently transfer my own photographs into the wax, along with various collage elements, and use oil paints in addition to pigmented wax to add luminous layers of color.