Gather silicone molds, mica powder or pigment, and aroma beads
Preheat oven to 325°F to 350°F
Fill a heat-safe container with aroma beads
Add fragrance oil to the beads
Stir until the oil is fully absorbed
Add color if desired and mix well
Let the beads sit until dry and no oil remains on the surface
Place beads into silicone molds
Bake until the beads melt together, watching closely
Remove from oven and let cool completely
Pop freshies out of the molds
Add ribbon, string, or hanging hardware if desired
Let freshies cure for several days before use