Cool Water Swirled Melt and Pour Soap Project

A Swirled Melt and Pour Soap

Setup for swirled melt and pour soap project
The Spruce / David Fisher

Many soap makers think you can't make swirls in melt and pour soap--but yes you can! It's different than with cold process soap, but it's possible. You need to work quickly, but this project will show you a basic layered melt and pour swirl technique with a cool, rushing water theme that can be modified to create almost any kind of swirl you can imagine for a melt and pour soap.

For this project, you'll need:

  • white melt and pour soap base
  • clear melt and pour soap base
  • fragrance or essential oil that will not discolor
  • blue soap colorant
  • white or snowflake mica (there are many variations of white, sparkly mica)
  • blue or other "cool" colored mica
  • a couple of teaspoons of liquid glycerin to pre-mix the colorants
  • several two-cup measuring cups
  • soap mold with individual cavities. I'm using a fabulous Bramble Berry 12-cavity silicone mold.
  • swirling tools: rubber spatula, chopstick, mini whisk

Cut and Weigh Your Soap Base

Clear and white melt and pour soap base
The Spruce / David Fisher

The first thing to do is to cut and weigh your melt and pour soap base.

The first soap base we're going to use is clear, so set the white base aside and melt the clear base in the microwave. Heat it in 30-45 second spurts...monitoring it so that it never gets too hot and boils. Stir gently in between the heating to help the chunks of soap melt.

Coloring the Clear Soap Base for the Top Layer

Adding colorant to the melted soap
The Spruce / David Fisher

Once the clear soap base is completely melted, add the fragrance or essential oil and a few drops of blue soap colorant. Stir well. Normally, with a melt and pour soap project, concern about color bleed would be an issue, but not so much in this case. If this was a more traditional swirl, like in cold process soap, you would likewise have to worry about the colors migrating, but in this project, you don't have to worry. The base blue color forms the soap that surrounds the mica swirls.

Now for the mica swirls, which we'll get to in a later step, you DO have to use a non-bleeding colorant!

Stir it well and you're ready to pour the first part of the soap.

Pouring the Top "Water" Layer

Pouring the top layer
The Spruce / David Fisher

For this soap, you want a nice, clear top layer so that it would look like you were looking down into some water to the swirl underneath. To get this effect, take some of the clear, blue soap and pour about 1/4-1/2 inch of soap into each of the mold cavities.

While that soap is hardening (it should take 20 minutes or so), you can mix your other colors.

Mixing the Colors for the "Water" Swirl

Mixing blue ultramarine in glycerin
The Spruce / David Fisher

For this project, we're using a combination of blue ultramarine and other white, sparkly micas.

Some dry colorants, like the light micas, mix directly into the soap easily. Others, like this blue ultramarine, tend to clump, leaving tiny blue dots through your soap. One way to prevent this is to pre-mix your colorant in a bit of liquid glycerin. Here, we're mixing about 1/4 tsp. of blue ultramarine into about a tablespoon of glycerin.

Preparing the Other Swirl Colors

Mixing the mica color combinations
The Spruce / David Fisher

Now we're going to make the other swirl colors.

Take the white soap base and melt it in the microwave. Add in the portion of fragrance or essential oil you've saved and stir well.

Then divide it into two measuring cups for the two colors.

To one (shown here), add the pre-mixed blue ultramarine and a bit of white mica. To the other, add some white, sparkly or snowflake mica. (Or whatever color/mica you like!) Mix well and you're ready to go.

Somewhat like working with a swirl in cold process soap making, you need to be very mindful of your time. However, instead of the soap reaching trace and thickening, here, it's just going to cool down and harden. If at any point the soap cools down so much that it's not stir-able, just microwave it for 10-15 seconds to heat it back up again.

Colors Ready to Swirl

Colors ready to pour and swirl
The Spruce / David Fisher

Just like you would line up all of your mixed colors before you did a cold process soap swirl, do the same with your mixed melt and pour soaps. Here (from left to right), we've got the rest of the clear melted soap base, the white/snowflake mica base, and the base with the white mica and blue ultramarine.

Preparing the top layer

Spritzing the top layer with rubbing alcohol
The Spruce / David Fisher

We want to make sure that the rest of the soap adheres to the top layer that we've already poured. To do this, spritz the top layer with a bit of rubbing alcohol.

First, Pour a Bit of Clear Soap

Pour a bit of clear soap
The Spruce / David Fisher

Pour a bit of the melted clear soap in first. The swirl seems to work best if the soap is at about 120 to 130 degrees. Heat it just a bit in the microwave if necessary.

Pouring the Swirl Colors

Pour the swirl colors
The Spruce / David Fisher

Then, with your artistic eye as a guide, pour in alternating bits of the colored and clear soap, layering and intermingling the bits of soap.

Save a bit of the clear soap to act as a "base" to the soap. (See Step #13)

Pouring a Bit of the White Soap

Pouring a bit of white into the swirl
The Spruce / David Fisher

Here, we're layering in a bit of the white soap.

Swirling the Soap

Swirling the soap
The Spruce / David Fisher

You've been working quickly, right? With soap that was heated up to about 120 degrees, right?


If so, you should still have some soap that's liquid enough to swirl. Using a chopstick or modified rubber spatula, and again, with your artistic eye as a guide, swirl the clear, blue and white layers of soap together.

Here we're trying to achieve a sort of rushing water effect.

Creating a Bottom Layer

Pouring the bottom layer
The Spruce / David Fisher

For this soap, you want to have a clear base layer. You could alternatively use all of the three soaps and just keep pouring/layering until you had poured it all.

Here, we're pouring the remainder of the clear soap into the molds, topping off the soap bars.

Finished Bars of "Cool Water" Melt and Pour Soap Project

Finished cool water melt and pour soap
The Spruce / David Fisher

Finished bars of the "Cool Water" melt and pour soap. You can see a few of the bars have a darker blue "base" than the others. This was our artistic side manifesting. After we had poured some of the clear base layers, we added another couple of drops of blue color to the remaining soap. This gave a darker blue color on that layer.

Use your artistic eye to combine colors, layers, and style into your melt and pour soapmaking projects.