Whip the oils into a soft consistency. Slowly pour a small amount of the lye into the whipped oils, and use a spoon to incorporate. Be super careful not to splash any lye at this point before the lye water is fully incorporated into the hardened, slushy, cool oils. Continue to add a small amounts of the lye water to the oils, and slowly and carefully mix it in. Take your time with this process!
Once the lye has been incorporated into the oils (this can take a few minutes), turn the hand mixer or stand mixer on low. Whip oils until a fluffy, frosting texture is achieved. Scrape any batter that has splattered on the side of the container and then turn the mixer to a medium setting. Continue to whip for several minutes.
Once the lye and oils are completely combined, add 0.3 ounces of the Lemon Verbena Yankee Type Fragrance Oil. Incorporate the fragrance oil with a spoon or spatula first until mixed, then turn on the mixer on low and whip the ingredients together until completely combined.
Split the frosting in half, and add all of the dispersed Yellow Lip Safe Mica. Use a spatula or whisk to fully mix in the colorant.
Cut off about a half inch from the tip of the frosting bag and push the tip through. Scoop two frosting colors into opposite sides of the bag until full. You will have some frosting left over, and will need to fill the bag again during the frosting process.
Squeeze out some of the frosting until both colors come out of the bag. Squeeze a dollop of frosting in the center of each cupcake.
Pipe the frosting up and around the center of each cupcake until you form a peak.
Place a lemon embed into the top of each cupcake. Immediately place the cupcakes into the fridge or freezer. This helps the frosting stay firm and prevents it from melting. Remove the cupcakes from the fridge or freezer after several hours or overnight. Allow the cupcakes to stay in the mold for 2-3 days. Carefully remove each soap from the mold, and allow to cure for 4-6 weeks. Enjoy!