Slowly and carefully add the lye to the water and gently stir until the lye has fully dissolved and the liquid is clear. Set aside to cool.
Melt and combine the coconut oil, olive oil, canola oil, castor oil, sweet almond oil and palm oils (remember to fully melt then mix your entire container of palm oil before portioning). Once the lye water and the oils have cooled to 130 degrees or below (and are ideally within 10 degrees of each other), add the lye water to the oils and stick blend until thin trace. If you’d like a harder bar of soap that releases faster from the mold, you can add sodium lactate to the cooled lye water. Use 1 teaspoon of sodium lactate per pound of oils in the recipe. For this recipe, you’d add about 2 teaspoons of sodium lactate.
Once the batter has reached a light trace, pour the batter into five equal containers. Each container will hold about 250 mL.
To each container, add the following amounts of dispersed colorants below and use a spoon or whisk to fully mix in.A: 2 teaspoons dispersed Titanium DioxideB: 1/4 teaspoon dispersed Black OxideC: 1/2 teaspoon dispersed Ultramarine Blue OxideD: 1 1/4 teaspoon dispersed Ultramarine Violet Oxide + 1/8 teaspoon Ultramarine Blue Oxide E: 1/4 teaspoon dispersed Ultramarine Blue Oxide + 1/2 teaspoon dispersed Green Chrome Oxide + 1/4 dispersed Titanium Dioxide
Add the fragrance blend evenly into each container. It’s okay to eyeball it! If your soap still has an extremely thin trace, pulse each container with the stick blender (from lightest to darkest) for about 3-5 seconds to slightly thicken the mixture. You want the consistency to be thin enough to easily pour, but thick enough that the colors won’t mix together.
Choose the color order that you would like to use. The order I used was: black, purple, teal, white, blue. But, you can use whatever order you like! You just want to keep it consistent. Begin pouring the first color into a large bowl, allowing the soap to run down the side of the bowl slightly. As you pour count “1, 2, 3, 4” to keep each pours consistent. Continue pouring each color into the bowl, counting during each pour until each color is almost used up. Save a small amount of the white, purple and teal shades (or whichever colors you prefer) to do a swirl design on the top.
Once the soap has been poured into the mixing bowl, carefully pour the soap into one corner of the mold until completely filled. The colors will begin to blend together a little, but that’s okay. Once completely filled, tap the mold on the counter firmly to help get rid of any bubbles.
Using the leftover soap, carefully pour thin lines of each color length-wise down the mold on the top of the soap. Pour carefully to ensure the colors do not break through into the soap.
Once each color has been placed on top, drag a dowel or chopstick vertically in an S-shaped curve across the lines of soap you just poured. Continue this pattern down the entire length of the mold. Do not insert the chopstick into the bottom of the mold, you only want to swirl the very top.
Then, use the dowel or chopstick to create S-shaped curves down the length of the mold in the opposite direction. Spritz with 99% isopropyl alcohol to prevent soda ash. Cover the soap and insulate for 24 hours. Allow the soap to stay in the mold for 3-4 days. Unmold, and cut into bars. Allow the bars to cure for 4-6 weeks. Enjoy!