Encaustic Medium is an essential component to encaustic painting. Beeswax on its own will remain soft; the addition of damar resin raises the melting temperature and will allow the beeswax to cure and harden over time. R&F encaustic medium is composed of 100% USP beeswax and damar resin. Encaustic medium is typically used to create transparency and extend encaustics colors. It can also be used for mixed media and sculptural applications. Encaustic Medium is encaustic paint without pigment.