Place the sea moss in a bowl of filtered water, fully submerging it. Let it soak for 48 hours to expand and soften.
Drain the sea moss and blend it with fresh filtered water until smooth.
Chop the melt and pour the soap base into small squares.
Melt the soap base in the microwave on low heat, using 30-second intervals and stirring in between, until completely melted.
Allow the melted soap to cool slightly, then stir in 2 to 3 tablespoons of the sea moss gel.
If desired, gradually add mica powder, one teaspoon at a time, until you achieve the preferred color.
Pour the mixture into your mold and let it set for a few hours or overnight until solidified.
Once hardened, remove the soap from the mold and enjoy!