Summer’s here, bringing with it sunshine, good vibes, and all the watermelon you can eat. To celebrate this fun season, we’ve got something special for you. It’s not the juicy watermelon slices you’re thinking of, but something just as refreshing. Say hello to our DIY Layered Watermelon Bath Bombs – a cool twist to your summer skincare routine, promising an amazing bath experience.
This homemade bath bomb recipe inspired by our favorite summer fruit combines coconut oil, goat milk, and the wonderful scent of watermelon, and what’s more it’s a fun craft project to make with older kids and teens.
This easy bath bomb recipe is your ticket to a tropical getaway right in your bathroom while also nourishing your skin.
With a unique blend of essential ingredients, this watermelon bath bomb recipe turns your regular bath time into a spa-like treat. It’s easy, fun, and a relaxing way to enjoy the sunny season.
So, let’s dive into the world of homemade bath bombs and get the most out of your summer with a nice relaxing bath.

Easy Homemade Watermelon Bath Bombs
It’s time to say hello to refreshing, nourishing, and invigorating baths with your homemade Layered Watermelon Bath Bombs.
These watermelon bath bombs are one of our favorite homemade bath bombs, and are a perfect DIY for teens or tweens. Put together a batch of these and your bathroom becomes a haven of delightful relaxation and your tub transforms into an oasis of fizzy enjoyment!
RELATED: Easy DIYs for Teens to Make and Give
Crafting your own bath bombs using natural ingredients is not only a fulfilling DIY project, but it’s also a fun, easy way to create beautiful handmade gifts.
This step-by-step tutorial on making DIY Layered Watermelon Bath Bombs guarantees a fizzy bath bomb experience that not only pleases your senses but is also great for your skin.
The beauty of this DIY project lies in its simplicity and effectiveness. You’ll learn how to transform everyday kitchen ingredients into a sensational bath product that releases a satisfying fizz and an alluring watermelon aroma as it dissolves in warm water.
Gathering the Essentials
Start your DIY journey by accumulating all the necessary supplies. For your convenience, we’ve sourced the best places to find them and added links to the products we used in this recipe.
The majority of these items can be found on Amazon, while others are easily available at your local Walmart or grocery store of choice.

- 2 cups of baking soda, 1 cup citric acid, and 1/4 cup cream of tartar. You can grab the baking soda from Walmart or any grocery store, while the latter two ingredients can be found on Amazon (our affiliate links are provided for your convenience)
- To add a nourishing touch to your bath bombs, we will also need 1/4 cup Epsom salts and ¼ cup powdered goat milk. The Epsom salt can be picked up from Walmart, and the powdered goat milk is readily available on Amazon.
- Further enhancing the nurturing benefits of our bath bombs, we require 1/3 cup coconut oil (find this at Sam’s Club or Walmart) and 1 teaspoon of polysorbate 80 (available on Amazon).
- To recreate the watermelon’s iconic colors, you’ll need red and green mica colorants / mica powder. We recommend picking these up in a set from Amazon.
- And how could we forget the star of the show? Watermelon scented oil! Get this amazing scent from Amazon, we used this set in our watermelon bath bomb recipe.
- The final touch of authenticity comes with ½ teaspoon of black cosmetic glitter and 1-2 tablespoons of poppy seeds, mimicking watermelon seeds. You can find both on Amazon and Walmart, respectively.
- Lastly, to mold your fabulous bath bombs, get a set of 2-sided metal molds from Amazon.
Ready with your supplies? Let’s get started with the exciting process of creating your very own watermelon bath bombs!

Step By Step How to Make Your Own Watermelon Home Made Bath Bombs
Creating your own bath bombs is an adventure in itself. The process is thrilling, engaging, and, best of all, easy! This easy DIY bath bomb recipe will guide you step by step, ensuring you craft the perfect fizzy bath bomb. There’s something incredibly rewarding about watching your homemade bath bomb dissolve into a whirl of colors and scents in your tub.
Remember, the key to a successful bath bomb lies in the balance of ingredients. Too much moisture, and your bath bomb may start fizzing prematurely. Too little, and it might crumble. But don’t worry! This tutorial ensures you get the balance just right.
Apart from elevating your bath time, DIY bath bombs also make perfect gifts. They are beautiful, personal, and luxurious — truly a thoughtful gesture. Plus, since they’re made from natural ingredients, you can gift them knowing you’re offering a safe, skin-nourishing treat. Whether it’s a birthday, a special occasion, or just because, homemade bath bombs are a surefire way to bring a smile to someone’s face.
So, are you ready to embark on this fun DIY project? It’s time to roll up your sleeves, gather your ingredients, and start creating these fantastic, fizzy, and beautiful bath bombs. Happy crafting!
Homemade Watermelon Bath Bombs
Step by step instructions for how to make your own watermelon bath bombs in this fun summer bath bomb recipe that is red, green, sparkly and watermelon scented!
Materials
- 2 cups baking soda
- 1 cup citric acid (I get mine on Amazon)
- 1/4 cup cream of tartar (I get mine from Amazon)
- 1/4 cup Epsom salts (I used the **Vitamin C & Citrus from Walmart)
- ¼ cup powdered goat milk (I get mine from Amazon)
- 1/3 cup coconut oil (I get mine either at Sam’s Club or the 2-pack of Lou Ana from Walmart)
- 1 teaspoon polysorbate 80 (I get mine from Amazon)
- Red mica colorant (I get mine in a set from Amazon)
- Green mica colorant (See above)
- Watermelon Scented oil (I get mine from this set from Amazon)
- ½ teaspoon black cosmetic (skin safe) glitter (I get mine from this set from Amazon)
- 1-2 tablespoons poppy seeds (depending on how many “seeds” you’d like (I get mine from Walmart)
- Supplies Needed:
- Bath bomb molds (This is a set of various sizes of 2-sided metal molds) I get mine from Amazon)
- Spray bottle filled with rubbing alcohol
Tools
- Bath Bomb Molds
- Spray Bottle
Instructions
- Step 1: In a large mixing bowl, add the baking soda, citric acid, cream of tartar and goat milk. Whisk dry ingredients together. (If desired, sift dry ingredients to rid the mixture of any clumps or hard pieces)

- Step 2: Add the coconut oil and scented oil. The coconut oil binds all the ingredients together, so your bath bombs don’t crumble when you touch them. Add the polysorbate 80. This helps the coconut oil disperse more evenly in your bath water, makes the bath bombs bubbly, and prevents the mica from sticking to the side of the tub.

- Step 3: Mix wet ingredients in well. You may need to use your hands to break down any lumps and make sure everything is mixed in. The mixture is perfect when it holds together when you press it into your hands and feels like wet sand.

- Steps 4-5: Divide the mixture into 2 bowls. Add 1-2 teaspoons of the green mica to one bowl and the same amount of the red to the other bowl.

- Continue to add a bit of mica until you achieve the color you desire.
- Steps 6-7: Mix the glitter and poppy seeds together.

- Add to the bowl with the red bath bomb mixture and mix well.
Melt any solid oils (coconut, shea, avocado, etc.) in a microwave safe container in 30 second bursts. Stir in between each. Continue until completely melted.
Directions for Molding the Bath Bombs
Step 8: Add the green mixture to one of the bath bomb molds, filling it about 1/2-2/3 full. Add the red bath bomb mixture until the mold is slightly overflowing. Add the red to the other bath bomb mold until it too is slightly overflowing.
Step 9: Over the smaller, empty bowl, press molds together and gently but firmly grind to remove any excess mixture. 
Gently tap mold to release the bombs. Allow to dry a minimum of 24 hours. If your climate is wet or cold, allow an additional 24 hours.
My rule of thumb is that when it is hard to the touch, they are ready for the tub! Store in an airtight container for up to 6 months until ready for use.
The supplies links I provide are Amazon affiliate links. I give them to you in hopes it makes it easier for you to find the proper products at the best price.
The best part about this DIY project is its simplicity and the joy of creating something delightful and useful from scratch.
Remember, these bath bombs can be stored in an airtight container for up to six months, making them a fantastic, personalized gift for your loved ones.
So, there you have it! A fun, exciting, and vibrant way to celebrate the spirit of summer in your bath! This recipe brings not just a blast of effervescence to your tub but also a burst of enthusiasm to your DIY skincare routine. Enjoy this juicy slice of summer, right in your tub! So, what are you waiting for? Let’s start crafting these little bombs of joy!

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I can’t wait to make these!
Thanks so much for showing how to make these. My girls love bath bombs.