Cut your melt-and-pour soap base into 1-inch cubes and place into a heat-proof container.

Melt in microwave for 15 second intervals until all the soap is melted.

Add in essential oil and stir.

If you want to add a colored drizzle on your soap like I did, pour a small amount of melted soap into a separate heat proof container. You will use this later.

Spritz some rubbing alcohol on the silicone mold to help get rid of bubbles. Pour melted soap into mold. Let the soap harden (takes about an hour) and then you can remove it from the mold. If you want to add a colored drizzle, continue to step 6.

To add a colored drizzle, remelt the small amount of soap from step 4 in the microwave. Once melted, add soap colorant and stir until well combined.

Lightly drizzle the colored soap on top of the white soap. It helps if you do this over a cooling rack or on a surface where the excess drizzle can drain. Put a sheet of parchment paper underneath for easy clean up.

Let soap harden completely. It is good to start using! Store soap in an air-tight container for up to six months.