How to Pipe Melt and Pour Soap with Melt Whip & Pipe

Want to pipe melt and pour soap like frosting? Melt Whip & Pipe (MWP) makes it easy to get tall, fluffy ruffles on top of your bars. In this tutorial I swirl an orange and green creamsicle soap loaf, then pipe a blue soap frosting top and finish it with glitter.

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Materials & Tools

Soap Loaf

Clear melt and pour soap base (green)
Goat’s milk melt and pour soap base (orange)
Stardust Blood Orange mica and Aqua Pearl mica from Bramble Berry (or a Stardust mica set)

Fragrance oil (I used Creamsicle)
10-inch loaf soap mold
Spouted measuring cups
A swirl tool (I bent a wire hanger to fit my mold)

Soap Frosting

Melt Whip & Pipe, about 8 oz for a 10-inch loaf (get it from its creator here)
Colorant for the frosting
Hand mixer with whisk
Piping bag and tip and a bag clip
A plastic cup for melting
Glitter and a small handheld strainer
Spray bottle of isopropyl alcohol and a thermometer

Fragrance Amount

I scented the soap loaf and didn’t add extra fragrance to the frosting. I use 5 ml of fragrance oil per 16 oz of soap base. You can always use less, but I wouldn’t go over 5 ml per 16 oz.

How to Pipe Melt and Pour Soap with Melt Whip & Pipe: Step by Step

1. Melt and Color the Bases

Melt the clear and goat’s milk bases separately. Mix each mica with a little alcohol and stir Blood Orange into the goat’s milk and Aqua Pearl into the clear. Add your fragrance.

Orange goat milk soap and green clear soap ready to pour

2. Pour Both Colors Together

Let both colors cool. Mine started at 150°F and 170°F, which is too hot. At about 123–124°F, pour both colors into the loaf mold at the same time from spouted measuring cups.

Pouring orange and green melt and pour soap together into a loaf mold

3. Swirl Lightly

I didn’t want to spend $25 on a swirl tool, so I bent a wire hanger to fit my mold. At about 112°F, I ran it through the soap once, gently. Melt and pour doesn’t swirl as dramatically as cold process soap, and it’s easy to overdo it.

Swirling melt and pour soap in a loaf mold with a bent hanger swirl tool

4. Melt and Whip the Frosting

Put Melt Whip & Pipe in a plastic cup and melt it in the microwave in short 10–20 second bursts. Add colorant. The instructions say to whip it until it’s about 110–120°F. I found it easier to pipe at around 120°F, because it gets harder to squeeze as it cools. Load it into a piping bag and clip the top.

5. Pipe the Frosting

Spray the top of the loaf with alcohol, then pipe ruffles along the top. I used about 8 oz for a 10-inch loaf. A 2 lb bag should frost about four loaves. Go for a high top if you like. Squeeze firmly, but watch that the bag doesn’t burst.

Starting to pipe blue Melt Whip and Pipe soap frosting onto the loaf

Piping ruffles of soap frosting along the soap loaf

6. Add Glitter

Spray the frosting lightly with alcohol and dust glitter over it with a small handheld strainer. Spooning glitter on tends to leave a big glob in one spot.

Sprinkling glitter over the soap frosting with a small strainer

7. Let It Set and Cut

The frosting sets to a marshmallow-like texture. Check the Melt Whip & Pipe instructions for when it’s ready to cut and package. Unmold and slice into bars.

Finished soap loaf with a tall piped Melt Whip and Pipe frosting top

Cut bars of melt and pour soap with piped soap frosting

Tips & What I Learned

Pipe while it’s still warm. Around 120°F was easier for me than 110°F.
Use a sturdy piping bag. Thick frosting puts a lot of pressure on the bag.

Balance your colors. I used more goat’s milk than clear, so the orange took over. Use equal amounts for more contrast.
Swirl gently. One slow pass is plenty in melt and pour.
Dust glitter with a strainer. It spreads evenly instead of clumping.

Troubleshooting

The frosting is too stiff to pipe.
It’s too cool. Warm it slightly, or pipe at around 120°F.

My swirl disappeared.
Melt and pour doesn’t swirl as much as cold process. Pour cooler and swirl only once.

One color took over.
Use about equal amounts of each color.

FAQ

What is Melt Whip & Pipe?

It’s a product made by another soap maker on YouTube for piping melt and pour soap like frosting. You can find it through her video.

How much frosting do I need?

I used about 8 oz to frost a 10-inch loaf.

How much fragrance should I use?

I use 5 ml per 16 oz of soap base. You can always use less, but I wouldn’t use more than 5 ml per 16 oz.

More Soap Frosting Ideas

If you make this, I’d love to see it! Tag me on Instagram or Pinterest, and subscribe on YouTube for new soap tutorials.

About the author

Anna has been making melt and pour soap for over 10 years. Figuring out ways to make different melt and pour soap designs is one of her interests. She has over 100 videos of making melt and pour soaps online.