Sweet DIY Watermelon Bath Bombs are so Easy to Make

This recipe for watermelon bath bombs is so quick and easy–but the end result is so sweet and fun, I can’t wait for bath time and the fizzy fun!

easy watermelon embed bath bomb recipe
I love how awesome these fun watermelon bath bombs turned out–and how fantastic they smell!

Watermelon Bath Bombs

Here at Ruffles and Rain Boots, we adore making our own DIY self care recipes. I feel like it’s an important thing for me and then it’s also an important thing to show my kiddo that is important to me. If that makes sense. And when I decided I needed watermelon bath bombs in my life, well, there was nothing stopping me.


I broke out my favorite citric acid, found some AWESOME sprinkles and went to work making the most fun watermelon scented bath bombs anywhere. If you’re ready to make a bath bomb with watermelon scent, let’s get started.

how to make embed bath bombs with watermelon scent
No Time to Make This Now? Pin it for Later

You’re busy, I get it. Pin this to your favorite self care recipes board on Pinterest and it’ll be here for when you’re ready.

closeup of a watermelon scented bath bomb with sprinkles with text which reads how to make watermelon bath bombs

As an Amazon Associate, I can earn from qualifying purchases.

Tips to Make Watermelon Scented Bath Bombs

  • I was inspired to make my watermelon bath bombs by these adorable watermelon sprinkles here. They’re so fun and simple, but they really make this embed bath bomb pop!
  • You should definitely also grab this ahhhh-wesome flavor oil here to make your watermelon scented bath bombs. Super worth it, considering it only takes a couple of drops and you can use this to also make things like watermelon cupcakes. Just sayin’.
  • Add into your planning to have your bath bombs on the counter drying for about 24 hours before using them, just so it will amp up the fizz. As a bonus, by letting these watermelon bath bombs dry for a full day, if there was a bit too much liquid in the mixture, you’ll still get peak fizz.
  • After they’ve dried for that initial 24 hours, I recommend you keep these Lush-inspired bath bombs in an air-tight container to help them last longer with the most fizz. This is key to pass-on too if you plan to gift these to someone, just in case they don’t know.
  • As with any recipe, it’s up to you how much fragrance or color to include in your watermelon bath bombs-–they’re your bath bombs. But I strongly recommend that you never (and I mean never) use food coloring. If you do, the bathtub and quite possibly your skin, will be your bath bomb’s color. So, even though finding soap colorant or mica powders is an extra step–it’s worth it.
  • These watermelon sprinkles bath bombs are essentially just essential oils, citric acid, baking soda, and a bit of water (and some other stuff but that’s basically it), just like all of my bath bombs. So, if you have any trouble getting your bath bombs to hold shape, they’re probably not wet enough–the recipe is intended to be a bit dry. Just add a little spritz of water and try again. But if you keep having trouble, check out this article on trouble-shooting bath bombs and shower fizzies.
easy way to make watermelon bath bombs

How Do I Make this Watermelon Bath Bombs?

I’m so glad you asked. Below is our written tutorial.

Yield: 5-6 Watermelon Bath Bombs

Watermelon Bath Bombs

easy way to make watermelon bath bombs

If you're looking for a fantastically yummy smelling bath bomb recipe, this watermelon bath bomb recipe is so awesome and it looks so awesome, too!

Prep Time 5 minutes
Active Time 15 minutes
Total Time 20 minutes
Difficulty Easy
Estimated Cost $3


For the Watermelon Seeds

  • 1/4 tsp black mica powder
  • 2-3 drops alcohol


  • 4-5 large bath bomb molds
  • Bowls
  • Whisk


  1. Whisk together the dry ingredients: baking soda, citric acid, cornstarch and epsom salts. 
  2. In a second bowl, mix together the wet ingredients: melted coconut oil, essential oil blend and alcohol together. 
  3. Separate a third of the dry bath bomb mixture into a second bowl. To this bowl of bath bomb mixture, add in the green mica powder and mix well. If you want more color, add additional mica powder in 1 tsp increments.
  4. To the larger portion of bath bomb mixture, add in the pink mica powder and whisk together well. If you want more color, add additional mica powder in 1 tsp increments.
  5. Add 1/3 of the liquid ingredients 1 tsp at a time to the smaller bowl of dry ingredients, mixing it slowly so as not to start the reaction. Then repeat with the remaining 2/3 of the liquid ingredients, mixing them into the second, larger bowl of dry ingredients. photo collage tutorial of how to make watermelon bath bombs
  6. Dust the inside of one side of a bath bomb mold with cornstarch. The sprinkle side will easily come out on its own, so I don't bother dusting that side.
  7. Place about 1 tsp of watermelon sprinkles in the bottom of the non-dusted side of the bath bomb mold. 
  8. Immediately fill the sprinkle side bath bomb mold with the pink mixture, heaping it full. Make sure there is ample excess mixture to help join the two sides of the mold together. 
  9. To the cornstarch dusted side of the bath bomb mold, fill it about halfway full of the green bath bomb mixture, then fill it the remaining way with the pink mixture, heaping it up as you did to the other half of the bath bomb. 
  10. Press the two sides of the bath bomb mold together, grinding and pressing them to force the sides together.
  11. Allow them to rest in your bath bomb molds for about 24 hours before gently tapping each side of the molds to release them.
  12. To add the watermelon seeds, combine the black mica powder with the alcohol, then, with a paintbrush, paint on the black seeds randomly on the body of the bath bomb.
  13. Use your bath bombs immediately or store in an airtight container until you’re ready to use! photo collage tutorial of how to make watermelon scented bath bombs


For more fun bath bomb recipes, visit Ruffles and Rain Boots!

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Did you make this?

Please leave a comment or share a photo and tag me @rufflesandrain

More Easy Bath Bomb Ideas You Might Like

  • Geode Bath Bombs – SUPER easy (way easier than I thought–I mean, wow!) and really cool, if you have have a few minutes, you can make these fun bath fizzies.
  • Unicorn Bath Bombs – One of my favorite embed bath bomb recipes. You just make your favorite unicorn colors and mash them together with a little magic and POOF!
  • Galaxy Bath Bombs – Want some bath bombs that are out of this world? You can’t go wrong with these fun galaxy bath bombs, seriously.
Please Save This to Pinterest

Your shares are how this site grows and I am sincerely grateful. Know a friend who’d like this? Please share it on Facebook or save it to your favorite DIY self care board on Pinterest.

photo collage of easy watermelon scented bath bombs with text which reads free tutorial to make watermelon bath bombs

Leave a Reply

Your email address will not be published. Required fields are marked *