Make a Bath Bomb float like LUSH

Floating Bubble Bath bomb

It’s the hardest thing to figure out for a new bath bomb maker…how do you make a bath bomb float like LUSH?  Why don’t any of the online recipes make bath bombs float like LUSH?

Two ingredients Make them Float!

The first one is called SLSA (Sodium Lauryl Sulfoacetate), and you may have it on hand if you are a frequent bath bomb maker.


The other ingredient is Coco Betaine (Cocomidopropyl Betaine).  Both of these ingredients are natural bubbling agents made from coconuts.

Coco Betaine is very inexpensive and this 500g bottle from Amazon Prime will last you a long time.  In addition, you can also use it in our bubble bar recipe.


How do I know this will make them float?

Seven years of bath bomb manufacturing & I hacked LUSH’s recipe.
Oh, yes I did.

If you look at LUSH’s large floating bath fizzies, they are using Lauryl Betaine and Sodium Laureth Sulfate together in their formula.

Cocamidopropyl betaine and Sodium Lauryl Sulfoacetate are the perfect ingredient hacks because both are natural,  affordable, widely available and make bath bombs float like LUSH!


Floating Bath Bomb with Fizzy Frosting

Floating Bath Bomb embedded with Fizzy Frosting.

Still don’t believe it?  Watch this video.

The video below shows multiple bath bomb designs using our master recipe. You can use this recipe to make any shape, size, or color. Then, you can embed smaller fizzies in the fizzy to make it spin and shoot out colors. It’s your playground.


Recipe: Make a Bath Bomb that Floats like LUSH!

Recipe authorFizzButter
Yield: 15 large Wilton hearts.
Prep time: 15 minutes

NOTE: INGREDIENT NAMES LINKED TO AMAZON FOR EASY PURCHASE.

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Dry Ingredients (Plus Fragrance)

Wet Ingredients


  1. STEP 1:
    Before you Begin!

  • Think of this mixture in two parts: DRY INGREDIENTS and WET INGREDIENTS.
  • DO NOT add any wet ingredients to dry ingredients until you are instructed!
  • It is a good idea to wear gloves and a mask when making any bath treats.


  1. STEP 2:
    Mix Dry Ingredients Plus Fragrance together

  • Put the dry ingredients in a bowl in this order: citric acid, SLSA, baking soda.
  • Add fragrance.
  • Mix together gently.
  • Set these ingredients aside.

  1. STEP 3:
    Mix Wet Ingredients Together

  • Next, take your Wilton Color and dissolve it in a very small amount of the water (just enough to make it liquid).
  • Once the color is dissolved, add the rest of the water and the Coco Betaine.
  • Stir gently.
  • Set this aside.


  1. STEP 4:
    Get Ready to mix wet and dry ingredients together

  • IMPORTANT NOTE: Once you add water to the dry mixture the clock is counting and you need to get it mixed and molded quickly.
  • Get another mixing bowl and put approximately 1/3 of your dry mixture in it.
  • Set aside the rest for your dry mixture until the next round of molding.
  • Now, carefully add 1 TBSP of your color/water mixture and start mixing gently. You will see it foam slightly where the water is added. Get that foam/liquid mixed evenly through your dry mix.
  • Do not overmix. Just mix it to where the water is all through the dry mix.
  • Next, make sure you have added enough water. Take a handful of mixture in your fist and squeeze. When you open your hand does the mix stay together or does it fall apart like dry sand?
  • Test the consistency. Does it hold it’s shape without being sticky to your hand. Yes? You are ready to mold.
  • No? Mix in a LITTLE more water. Do the squeeze test.


  1. STEP 5:
    Mold your floating Bath Bombs

  • As long as your wet to dry ratio is right, molding should be easy.
  • Quickly mold your bomb by pressing your mixture into your mold. Unmold after a second or two (you shouldn’t have to leave these in for them to stay together.)
  • Place unmolded bath bombs on 18 x 26 sheet pans lined with wax paper.
  • You may get sticking in the corner of your mold after a few uses. This is normal and it doesn’t mean you are doing anything wrong. For example, in a heart shape, the point at the bottom of a heart my try to stick after you have used the mold a few times. For that reason, it is good to have a few more clean, dry molds handy for backup.


  1. STEP 6:
    Cure your floating bath bombs

  • Bath bombs cure best from 60-80 degrees. In fact, the cooler, the faster and better they cure. Do not put them in a high humidity area as it could cause pimpling on the surface of the fizzy.
  • Never cure your bath bombs in direct sunlight, high temperatures or high humidity.
  • Package your bath bombs after they have cured for 48 hours. Even if they look dry on the outside, there is probably still moisture in the middle, especially on larger fizzies. Ultimately, if you package them too early it may degrade the fragrance or make it smell funky. It can also effect the composition of the fizzy by making it slightly soft. Don’t do it.


Lavender Essential Oil
Get Lavender Essential Oil from Amazon

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Troubleshooting your Floating Bath Bomb

Have I added too much water?

You can tell if you added too much water because it will really stick to your hand and you will see your mixture visibly rising out of shape. i.e., you put it in the mold and it sticks so bad, you can’t get it out and it puffs out of shape.

If this has happened, work a little dry mix through it and see if it settles down. Your target wet to dry ratio is just enough water to make it all stick together and no more.

One final note, if you start to cure your fizzies and they lose their shape and flatten on the bottom, you have added too much water. Large round shapes are the hardest to perfect and any flat design will be easier for a beginner.

Have I used enough water?

If the mix is sandy and doesn’t hold together enough to mold, it is likely you need to add a little bit of water. Be careful to just add a little at a time.

Have I undermixed my wet/dry mix?

You can tell if you undermixed if you get warts on your bath bombs as they sit and cure. It usually shows up very fast. You usually cannot redo them at this point, so just let them cure and use them anyway.

Pro Tip


2 cups of baking soda = 1 pound.
2 cups of citric acid = 1 pound.


Keep this in mind when you need to reorder raw materials.


More information on molds

You can use any kind of metal or milky way plastic mold with this recipe. However, it doesn’t work as well with a silicone mold.

Wilton Heart Cut-out
Get fast at Amazon Prime.

Buy Heart Molds at Amazon

We used a Wilton Heart mold on the yellow hearts and a Milky Way Chrysanthemum mold on the aqua colored flowers with gold shimmer below (sold out on Amazon).


TIP:  Mix mica or shimmer with rubbing alcohol and you can paint or stencil your bath bombs!  Or, just dust with shimmer for an adorable touch!

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Gold Shimmer
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Just keep in mind, the less intricate the detail and the fewer sharp corners the better final results.  Also, a flat bottom design like this is easier than a large round one for a beginner.


chrysanthemum mold
Floating Bath Bomb made with Milky Way Chrysanthemum mold and dusted with gold shimmer.


Pro Tip


Because of the bubbles, this bath bomb will not be moisturizing like our Butter Bath Bomb Recipe.  Even if you add oils and butters, they will partially emulsify.


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Make a Bath Bomb float like LUSH
Average rating:  
 4 reviews
by Tisha on Make a Bath Bomb float like LUSH

My daughter and I had the best time making these for her slumber party gift bags! Thank you so much!

by Macy on Make a Bath Bomb float like LUSH

I made these last night with the heart cutout and they turned out great. Please post the frosting recipe soon!

by Shirley on Make a Bath Bomb float like LUSH

Thank you! Thank you! Thank you!

I have tried to figure out this for a long time!

by Nancy on Make a Bath Bomb float like LUSH

Yes! Yes! These were great. The only tricky part is the water. You start to get the feel for the mixture. It's fun to make, too.

Butter Bath Bomb Recipe Master

Butter Bath bomb

Our best selling bath bomb 7 years straight!

Free bath bomb recipe for our best selling butter bath bomb. It was our top seller at  FizzButter for 7 years straight.


Butter bomb Butter Bomb embedded with fizzy frosting and dusted with gold shimmer.


Butter Bombs vs. Bubble Bombs

First, bath bombs fall into two broad categories:  moisturizing bath bombs (butter bombs) vs. bath bombs that bubble (floating bath bombs).  So, if you prefer bubbles go to our floating Bubble Bath Bomb Recipe or Bubble Bar Recipe (solid bubble bath recipe).


Who needs a butter bath bomb?

People with dry skin love moisturizing bath bombs.  In fact, during a warm bath your open pores drink in the luscious butters and oils.  I developed this formula because I had cracked, alligator feet.  Not anymore!

Don’t like putting on lotion after a bath?
No problem!  Use a moisturizing butter bomb!

Select skin nourishing butters in their purest form without preservatives or chemicals.  You won’t have to read the label because you know what is in it!

Mango Butter
Use skin nourishing butters in their purest form without preservatives or chemicals.

Buy at Amazon


Use your favorite Butter combo

From the beginning, our master formula included shea butter.  If I was still manufacturing today, I would use shea.  In my opinion, shea is the king of butters and the cornerstone of any butter combination.

It’s so easy to customize this master recipe with your favorite choice of luscious butters and oils.

Shea Butter
Get Raw Shea Butter fast from Amazon.

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Citric Acid – Ingredient Spotlight


Citric acid can be coarse or fine grain. In addition, grain size DOES make a difference in the finished product.

If you use a small grain citric acid, like Milliard you will get a harder bath bomb with a smoother surface.

Note: Fine grain will clump if exposed to humidity so be sure to store it in a tightly closed bag.

Citric acid can irritate the skin (MSDS sheet) so it is a good idea to wear gloves when you are making bath bombs.

Citric Acid
Fine grain citric acid works best.  Get Milliard at Amazon.

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Butter Bath Bomb Recipe Master

Recipe authorFizzButter
Yield: 7 Jumbo or 14 small bath bombs.
Prep time: 15 minutes

NOTE: INGREDIENT NAMES LINKED TO AMAZON FOR EASY PURCHASE.

Buy at Amazon

Ingredients


  1. STEP 1:
    Mix your Dry Ingredients plus Oils

  • Get a medium mixing bowl.
  • Mix together: Baking soda, citric acid, epsom salt, melted shea butter, grapeseed oil, color, and fragrance.

  1. STEP 2:
    Mix cold water into your dry mixture

  • Put half your dry mixture into a small bowl.
  • Add 1/2 T Cold water and mix just until water is dispersed. You will notice the color has darkened and distributed more evenly.
  • Test your wet/dry ratio: take a handful of mix and squeeze it in your fist. When you open your hand does it hold its shape or does it fall apart like dry sand? If it holds it shape, go ahead to the next step. If it crumble like dry sand, add a little more water and mix.

  1. STEP 3:
    Mold your Bath Bombs

  • Get your Round stainless steel molds lined up. Make sure they are cool and dry. Warm molds can sometimes stick.
  • Pack and unmold one before you do them all so you can verify your wet/dry ratio. Once you have mastered the feel for how much water it takes, you have mastered this recipe.
  • Place unmolded bath bombs on a waxed paper. These 18 x 26 sheet pans lined with wax paper work great.

Always Use Stainless Steel or Plastic Molds

Never use aluminum when making bath bombs because it can discolor your mixture and turn it grey.

Stainless Steel Mold
Always use stainless steel molds. Aluminum reacts to citric acid and should never be used.

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Cure your Bath Bombs like a Pro

    • Bath bombs cure best from 60-80 degrees. In fact, the cooler, the faster and better they cure.
    • Do not put them in a high humidity area as it could cause pimpling on the surface of the fizzy.
    • They really should not be packaged for 48 hours. Even if they look dry on the outside, there is usually still moisture in the middle.
    • Never cure them or store them in direct sunlight.

    Troubleshooting

    Have I added too much water?
    If you added too much water the bomb may stick to the mold so bad that it won’t come out. You want the mix to be slightly damp, not wet. After you unmold, it should hold it’s shape and not flatten out on the bottom after a few minutes.

    Have I used enough water?
    If the mix is sandy and doesn’t hold together enough to mold, it is likely you need to add a little bit of water. Be careful to just add a little at a time.

    Have I undermixed my wet/dry mix?
    You can tell if you undermixed if you get warts on your bath bombs as they sit and cure. It usually shows up very fast. You usually cannot redo them at this point, so just let them cure and use them anyway.




    Pro Tip


    If you add SLSA to this master recipe, it will emulsify the butters which does two things:

    1. Suspends the butter so it won’t stick to the side of the tub.
    2. Makes the bath bomb less moisturizing.
    Note: In our best selling butter bath bomb, we wanted full-on, messy butter because there is nothing like it for dry skin. If you don’t want that, simply add 1TB SLSA COARSE to this master recipe.



    Free Butter Bath Bomb Recipe
    Butter Bath Bomb with pink epsom salt on the white area. Use your imagination

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    Butter Bath Bomb
    Average rating:  
     3 reviews
    by Casy on Butter Bath Bomb

    I love this bath bomb!!! I have very dry skin and this makes me so soft.

    by Marla on Butter Bath Bomb

    This has been my favorite bath bomb for years when it was sold at fizzbutter.

    by Xi on Butter Bath Bomb

    Best bath bomb i ever used.

Bubble Bar Recipe Master

Bubble Bars

This bubble bar recipe is the secret to soft bubble bars that foam and bubble on contact with water!  They are the coolest, cutest bars that crumble easily and dissolve quickly.  This master formula took over a year to perfect and was a top seller at FizzButter.


Bubble bar with three layers
With this Bubble Bar Recipe you can do designs like this three layer bar.  It has two rose pink gradients and the top layer is white with pink epsom salt.  Use your imagination!

Bubble Bar Video

Watch what makes this Bubble Bar extra special: it foams and bubbles on contact with water.


Two Layer Bubble Bar
Two layer Bubble Bar with Pink and Yellow. Think about what your colors will look like combined in the water, too. Pink and yellow = peach!

Sodium Lauryl Sulfoacetate (SLSA) Ingredient Spotlight


SLSA is a powder made from coconuts and is gentle to the skin. It makes long lasting, creamy bubbles.

Always buy coarse SLSA. Fine SLSA is horrible to work with and it results in a hard, brick-like bars that do not dissolve well. In addition, fine SLSA makes a big mess. It is never worth it so don’t even think about it. Always buy coarse SLSA!  Get it fast from Amazon.

SLSA Coarse

SLSA Coarse is made from coconuts.

Buy at Amazon


Bubble Bar Recipe Master

Recipe authorFizzButter
Yield: 15 bubble bars.
Prep time: 15 minutes
Cook time: 4 hours
Total Time: 4 hours 15 minutes

NOTE: INGREDIENT NAMES LINKED TO AMAZON FOR EASY PURCHASE.

Buy at Amazon

Ingredients


  1. STEP 1:
    Add Wet Ingredients to Dry Ingredients

  • Put the dry ingredients in a medium bowl in this order:
    a) slsa, b) tartaric acid, and b) baking soda.
  • Next, add the wet ingredients in this order
    (on top of the dry ingredients):
    a) glycerine, b) fragrance and c) CocoBetaine.

  1. STEP 2:
    Make White Base

  • Mix together all ingredients (but color).
  • You should end up with a soft, cookie dough consistency.
  • If your mixture is still powdery and not holding together, add a small amount of vegetable glycerine. If your mix is extremely dense and brick-like, add another drop of coco betaine.

  1. STEP 3:
    Add Color

  • Add color to you white base. You can divide the white base and add different colors for different layers.
  • Micas and shimmers can also be used in this base.

 


  1. STEP 4:
    Mold in Small Loaf Pans (or any mold)

  • Line each loaf pan with wax paper. Put a strip on the narrow side and the wide side.
  • Pack your colored mixture into your lined loaf pans.
  • Let these sit in the loaf pans for 2-4 hours before you slice them. Some bubble bars will rise more than others. That’s okay, just check them periodically and flatten the loaf back down in the pan. Don’t try to cut the bubble bars while they are still in the ‘rising’ phase.

  1. STEP 5:
    Cut your Bubble Bars

  • Unmold the loaf on a sheet of wax paper. Use the sides of the wax paper to make the final shape of your loaf.  You can still shape it at this point before you slice it. It should be firm, but not hard.
  • Let them cure for two days before packaging.  Store bubble bars out of sunlight!  The sun can degrade the color and fragrance.

 


Bubble Bar Recipe Troubleshooting

Have I added enough glycerine?

If your mix is still powdery and does not hold together like a soft cookie dough, it needs more glycerine.

Have I used too much or too little coco betaine?

Even though just a few drops of this go into a bubble bar, it can make a HUGE difference.

In addition, it will vary with different fragrances. Example: Eucalyptus essential oil will cause the bubble bar to rise less vs. almost any other fragrance oil.

Don’t leave out the Coco Betaine!

Unfortunately, if you leave out the coco betaine, you will get a dense, brick-like bubble bar that it hard to crumble. It is like making bread without the yeast. Don’t do it.

Whereas, if you add too much coco betaine, your molded mixture will rise and spill over the sides of the pan. Don’t worry. If this happens, just wait to cut your loaf after it completely relaxes.

NOTE: Now that you have coco betaine and SLSA on hand, you can also make our Floating Bath Bombs.


Have I undermixed my wet/dry mix?

If you mix it right, you will have a soft cookie dough consistency and the color is evenly distributed and not speckly.

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Bubble Bar Recipe
Average rating:  
 4 reviews
by Tina on Bubble Bar Recipe

So easy to make! I gave them as gifts to the women at my book club. Everyone loved them!

by Chris on Bubble Bar Recipe

I loved these from FizzButter!!!! A-may-zing! Thanks for sharing.

by Ginger on Bubble Bar Recipe

These were very easy to make and they worked great. Thanks for linking to exactly the items that I need!

by Cindy Lou Who on Bubble Bar Recipe

These are the best thing that ever happened to my wine and bath night.