Use a digital scale to measure the water, then pour it into a heat-resistant container that can handle sudden temperature changes.
Measure out the lye, then slowly add it to the water a little at a time, stirring as you go and letting it dissolve before adding more. The chemical reaction will cause it to heat up quickly. Set aside. (see notes below)
Melt mango butter, cocoa butter, coconut oil and jojoba oil in a medium-size saucepan over medium heat.
Once the butter and oils are melted, remove from heat.
When the oils cool to around 100°F, add the lye water in and *mix with an immersion blender. This will take a couple of minutes. You will know it is the right consistency when the soap from the blender drips and pools up on top of the soap in the saucepan. This is known as the trace.
Add in the lavender essential oil, mix in with the immersion blender.
Pour the soap directly into the silicone soap molds. If using another type of mold, it may require parchment paper.
Allow the soap to harden for at least 24 hours or up to 3 days. Remove the soap from the molds and allow bars to cure for 5-6 weeks before using.
Notes
*Always add lye to water. Never add water to lye.Use a tall mixing bowl when mixing with an immersion blender. This helps keep everything contained and prevents any splashes from escaping over the sides.I always recommend keeping a separate set of tools just for soap making, things like bowls, spatulas, and thermometers. It just keeps everything cleaner and safer, and that way, you’re not mixing your DIYs with your kitchen gear.Make sure you work in a well-ventilated area away from kids and pets. When working with lye, be sure to work in a well-ventilated area and wear safety goggles, mask and rubber gloves. If lye gets on the skin or in the eyes, it can be very harmful.Check out the video instructions in the post above!