Watermelon Summer Soap

Here's a recipe that is nice and light along with being eye candy for the summer time. It smells just as delicious as it looks and with a little practice it can be made in just under an hour.

Information & Details


Watermelon Slices

Our watermelon slices are an easy way to get those pretty summer soaps that everybody fusses over. We will be working with embeds, but you don't need any special molds for this project, just your normal soaping tools. We're going to break this recipe down into two parts. Prepare the first part, the 'watermelon seeds' the day before so you have them on hand when you want to use them. The second part is the actual main project.

What you will need for this recipe:

Part 1: Embeds (Seeds)

  • 3.42 oz. Distilled Water

  • 1.26 oz. Lye (NaOH)

  • 2.5 oz. Coconut Oil

  • 0.45 oz. Castor Oil

  • 2.7 oz. Lard

  • 3.64 oz. Rice Bran Oil

  • ½ tsp. Activated Charcoal

Part 2: Watermelon

  • 14.82 oz. Distilled Water

  • 5.48 oz. Lye (NaOH)

  • 1.95 oz. Castor Oil

  • 9.75 oz. Coconut Oil

  • 11.70 oz. Lard

  • 15.60 oz. Rice Bran Oil

  • 2 oz. Watermelon Fragrance Oil

  • ½ tsp. Green Mica

  • 1 tsp. Pink Mica

  • ½ tsp. Titanium Dioxide


(Part 1)

ONE - Make the embeds the night before. (If you are a seasoned soap maker and want to make the embeds with melt and pour a few minutes before, then that is fine.) Divide the recipe into 1/5 of it's total and color it with black pigment or activated charcoal. In the demonstration we are using black pigment. The embeds will be sliced into long slender pieces. You do not need to have a special mold for these embeds. You can pour the soap into the bottom of a loaf mold or on a tray lined with wax paper. Allow them to sit until they have become firm, but soft enough to easily slice.

TWO - Remove the embed soap to a sheet of wax paper on a flat surface. Slice it into pieces into 1/2 cm. wide by 6 inches long. Set these aside.

(Part 2)

THREE - Gently pour the lye crystals into the lye water solution and dissolve completely. Set this aside to cool. You can put it in the fridge to cool faster. We will not use this before it has settled to room temperature.

FOUR - Combine the oils into a large bowl. Hard oils can be melted on short bursts in the microwave. Be careful not to burn the oil. Only give it enough heat to melt it. Set this aside to cool to room temperature.

FIVE - Prepare your colorant. We will need 3 colors: green, pink, and white. In the demonstration, we are using soapberry green from TKB. This is a morphing green, and will turn to a natural sage. If you want a more colorful watermelon slice, or a more cartoon look, go with a neon or vibrant green. For white we are using Titanium Dioxide, and the Pink is Hollywood pink from Nurture Soap. In 3 separate cups mix 1 tsp. of each powder into three tbsp. of oil. The oil can be from the oil combination that you have just made.

SIX - Gently mix the lye water solution into the large bowl of oils. Mix this with a stick blender until it is completely emulsified. Once this is complete add the Watermelon fragrance oil.

SEVEN - In a separate cup pour 10 oz of soap batter. Color this with the green which will be the watermelon rind. Once the color is fully incorporated pour the entire amount evenly on the bottom of the soap loaf mold.

EIGHT - In a separate cup pour about 6 oz. of soap batter and color it white with the titanium dioxide. Blend this well and gently pout this over the green soap without interrupting the even layer. Set this aside to become firm.

NINE - With the remaining soap batter add the (Hollywood) pink. Blend this until the trace begins to thicken up. We want this to be a consistency that will hold the embeds without them sinking to the bottom, so this part should be just thick enough to gently spoon into the mold. Without interrupting the other layers spoon a layer of pink on top of the soap. Once it is completely covered place a few of the long black slender strips on top of the pink layer. Cover this with another layer of pink soap. Continue alternating the black embeds and pink layer until you have run out of soap batter.

Allow this to harden for 24 hours and cut into slices. The final product will be finished curing in 4 - 6 weeks.