Cut up the melt and pour soap base into small cubes about one inch. 2. Put the cubes of soap into a microwave-safe glass container and melt in 30-second increments until fully melted. 3. Add 10 drops of lavender essential oil. 4. Add in the blue mica powder and stir very well until it is all combined with no chunks. 5. Pour the liquid into the soap molds. 6. Let sit overnight, or for a few hours at least. 7. Pop out of the soap molds when it is hardened and enjoy!