Weigh water. Wearing appropriate safety equipment, weigh lye. Go outside and add lye to water and stir until dissolved. Do not breathe in fumes that are given off for 1-2 minutes. Let cool until it is around 90 degrees Fahrenheit.
4.5 ounces lye, 12.9 ounces filtered water
When both oils and lye water are at desired temperatures, pour lye water into oils and use a stick blender to blend on and off until very light trace.
Pour colors into 2 opposite corners of your soap mold, pouring for a few seconds until switching colors. Rotate between colors to make a swirl design. If desired, gently shake or turn your mold to gently mix the layers slightly (Don't slosh it out).I
Insulate for 24 hours. Remove, cut, and cure for 3-6 weeks.