Place the Epsom salt into a clean mortar and grind it with the pestle until the crystals are fine.
Add the fractionated coconut oil, emulsifying wax, and stearic acid to a heat-safe container.
Heat the mixture until the emulsifying wax and stearic acid have completely melted.
Allow the melted mixture to cool somewhat. Add the fragrance oil and mix well.
Add the Himalayan salt and finely ground Epsom salt.
Allow to cool until white color. Once the mixture has thickened, stir it thoroughly.
Once the salts are evenly distributed, transfer the finished scrub into a clean, dry, wide-mouth container.