Combine Olive Oil, Coconut Oil, Castor Oil, Grapeseed Oil, and Shea Butter in a stainless steel pot and heat on low until all oils are melted and combined. Cool to 100 degrees Fahrenheit.
Combine aloe and water and go outside. Add lye crystals slowly and stir until dissolved. Do not touch the liquid or breathe in the gas. The gas will dissipate in 1-2 minutes. Let it cool to 100 degrees Fahrenheit.
When all ingredients are around 100 degrees, add the lye water to the pot of oils and blend with a stick blender for a few minutes on and off. Check for trace (thickening). Continue to blend until trace.
Add essential oil and blend.
Pour into prepared mold and allow to sit for 24 hours before removing.