Remove the fully frozen milk from the ice cube trays and place into a container that has been placed in an ice bath. Slowly add lye and stir until the lye is fully dissolved and the milk has become liquid. Click here to see this process and more tips on creating a lye and milk mixture. If you’d like a harder bar of soap that releases faster from the mold, you can add sodium lactate to the cooled lye milk. Use 1 teaspoon of sodium lactate per pound of oils in the recipe. For this recipe, you’d add about 2.5 tsp. sodium lactate.
Melt and combine the coconut oil, olive oil, castor, sweet almond oil and palm oils (remember to fully melt then mix your entire container of palm oil before portioning). Once the oils have cooled to 130 degrees or below, add the lye milk to the oils and stick blend until medium trace. Because this design is simple, a thicker trace than normal works great.
Add 1 tablespoon of oat extract, and use a whisk to combine.
Split the batch evenly into two containers. Each container will hold about 3 cups. To one container, add all of the colloidal oatmeal and titanium dioxide. Use a whisk to fully blend in.
To the other container, add 2 teaspoons dispersed brown oxide and all of the Oatmeal, Milk and Honey Fragrance Oil. Use a whisk to fully mix in.
Pour the white soap into the mold, and firmly tap the mold onto the counter to evenly disperse the soap and get rid of air bubbles.
Use a powder duster to sprinkle on a thin layer of Gold Sparkle Mica. Don’t use too much, or the layers of soap may separate. Once the mica has been sprinkled on, close your eyes and gently blow on the mica to evenly disperse it.
Slowly and carefully, pour the brown soap into the mold. Pour the soap over a spoon or spatula to make sure the soap does not break through to the white layer.
Gently tap the mold onto the counter to evenly disperse the soap in the mold. This also helps get rid of air bubbles.
Use a spoon to create peaks and texture into the top of the soap.
Sprinkle a layer of oatmeal on the top. Once you’re happy with the amount of oatmeal, spray the top with 99% isopropyl alcohol. Place the soap in the freezer for 5-24 hours to help prevent gel phase. Remove the soap from the freezer and allow to sit in the mold for 4-5 days. Milk soap can be a little softer due to the extra milk fat. Patience is key! Use the crinkle cutter to create a textured bar, or a sharp non-serrated for a smooth cut.