Remove soap base from container and cut into pieces. Place in a microwave safe container and heat according to package directions. Once the soap is melted, work quickly as it will begin to harden immediately around the edges of the bowl.
Add 10 drops of peppermint essential oil and stir to blend. If you want your soap to be two toned like mine you are going to need to color your soap! I actually melted two batches of soap base. The first I added soap colorant to reach the desired shade. Stir to blend. I then poured it into the soap mold until each segment was about half full. If the soap has begun to harden, reheat in the microwave for about 10 seconds, or melt more soap if you need to.
Then, I melted a second batch and left it white for the top. I still added peppermint essential oil and just poured it over the red/pink base to finish filling each segment of the mold.
Allow soap to rest for at least 45 minutes before moving. When the soap is set, remove from the mold and package for gifts. It is just that easy!