Empty the clear packaging jar. Wash & dry thoroughly. Set aside for use later.
In a large glass mixing bowl, add 16 ounces of water. Add stearic acid and emulsifying wax to the water. Place the bowl in microwave and heat until stearic acid and emulsifying wax are completely melted. This could take between 2-3 minutes or longer depending on the wattage of your microwave. Waxes must be completely melted for the lotion to emulsify properly.
Gently stir all ingredients once the wax mixture has melted in. To the water mixture, add in Shea butter and grapeseed oil (1 to 2 bottles if you prefer light texture or 3 to 4 bottles for extra moisturizing). Gently stir to allow butter to soften and melt.
Using a stick blender or hand mixer, begin to blend ingredients carefully. Continue blending until the mixture starts to thicken. This may take several minutes. Once the mixture starts to thicken, turn off the blender and let the mixture sit and cool for 30 minutes.
Add preservative and the essential oil blend to the mixture. Blend thoroughly for about 2-3 minutes until all ingredients are thoroughly incorporated.
Pour the mixture back to the clear jar. Let lotion cool completely. Put the caps and labels on.