Work in a well-ventilated area away from any people and wear proper safety gear, including goggles, mask, gloves, and sleeves.
Add the water to a heat-resistant glass or metal container. Then, carefully and slowly add the lye to the water and gently stir it until dissolved. Then, set aside. (see notes below)
Using the digital scale, measure the coconut and almond oils and melt them in a double boiler or small saucepan on medium-low heat.
Once the oils are melted nicely, allow them to cool to 100°F before mixing with the lye water.
Slowly add the lye and water to the oils, a little at a time. Then, place the immersion blender in the middle of the bowl at the base. Pulse for several seconds, then quickly swirl with the blender switched off. Repeat until it comes to a light trace (10-15 min). Be careful not to let it splash, as it will burn the skin.
Once it comes to trace, transfer the liquid soap to the molds to harden.
Allow the soap to harden and sit in the mold for at least 24 hours or up to 3 days.
Remove the soap from the molds and place them on their ends to cure for 5-6 weeks before using.
Notes
The Lye water mixture will shoot up over 200°, so you must use a container that can handle the rapid increase in temperature.Do not breathe in the fumes.This soap takes a bit longer to come to a light trace – usually about 10-15 minutes of blending time.