Cut 2 lbs of soap base into cubes and melt in the microwave in a heat-proof bowl. Set aside.
Then, cut 1 lb of soap base into cubes and melt in a separate container. Both batches will need to be kept hot at the same time, so you may want to alternate heating back and forth.
Colour the 2 lb soap base with spirulina. Then add dye to the 1 lb bowl to give it a stronger green shade.
Scent the soap base. To do this, divide your essential oils into thirds, and give 2/3 to the 2 lb base and the remaining 1/3 to the 1 lb base. This can be a rough estimate.
Pour the 2 lb base into the silicone leaf mould, then immediately add the 1 lb soap base on top. To swirl the colors, drag a chopstick and make a few zig-zag patterns.
Allow the soap to set, Then demould and slice into bars. Enjoy!