1-Paraffin Waxes come from the de-waxing of paraffin distillates; Microcrystalline Waxes are derived from residium.
2-Paraffin Waxes have relatively large brittle crystals (Microcrystalline) and generally have little affinity for oil.
3-Microcrystalline Waxes have very minute crystals (Micro Crystals) and are flexible. They have a greater affinity for oil, which is held tightly in the crystal lattice and does not migrate to the surface.