Starting with the clear melt and pour soap, cut 4-5 ounces into uniform pieces and melt in your double boiler until completely melted. Pour a thin layer of the melted soap into one mold cavity and spritz with rubbing alcohol to remove any bubbles. Allow it to sit until a skin forms on the surface.
Once a skin has formed, press lavender buds into the soap.
Pour the remaining clear soap over the lavender buds and spritz with rubbing alcohol.
Allow soap to harden for 30-40 minutes, or place into the refrigerator for 15 minutes, or until set.
Remove soap from mold.
Cut bar into 3 equal pieces and place them back into the molds towards the center.
Melt 12-13 ounces of white melt and pour soap in your cleaned double boiler. Add 2-3 drops of purple soap colorant and 4-5 drops of lavender essential oil, mixing until well combined. Carefully pour the melted white soap into the molds, avoiding the center soap. If any white soap gets poured over the buds, it is okay. Allow it the soap harden as in the following step, then wipe the excess soap off with a damp cloth.
Allow the lavender bud soaps to harden for 1 hour before removing from the mold.