Phthalo Blue Encaustic A versatile paint for fine artists, R&F Encaustics are composed of beeswax, damar resin and pigments. In a molten state, it is applied to an absorbent ground and then fused, or re-melted, to acheive a range of effects, from glass-like smoothness to rich, impasto-like textures. Very powerful, makes very clean tints. Greener than Ultramarine and Cobalt Blues.Phthalo Blue Encaustic A versatile paint for fine artists, R&F Encaustics are composed of beeswax, damar resin and pigments. In a molten state, it is applied to an absorbent ground and then fused, or re-melted, to acheive a range of effects, from glass-like smoothness to rich, impasto-like textures. Very powerful, makes very clean tints. Greener than Ultramarine and Cobalt Blues.