DIY Bathtub Bombs Suggestions & Methods!

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On this put up I’m going to offer you step-by-step directions on how one can make your individual diy bathtub bombs! This selfmade bathtub bomb recipe is tremendous straightforward to make and so enjoyable to make use of! Create a spa-like expertise with a pleasant heat bathtub, a glass of wine and selfmade fizzy bathtub bombs!  This enjoyable bathtub bomb challenge comprises straightforward to seek out, pure elements that come collectively for an expensive bathtub time expertise. 

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Ever had a type of DIY makes an attempt the place every thing went fallacious and what was presupposed to be straightforward became a 2 day lengthy ordeal? That is the way it went with studying to make my very own bathtub bombs. First I used to be unprepared with elements and didn’t have sufficient citric acid. Then I didn’t have sufficient corn starch. Subsequent, I shortly found I purchased the worst molds! I re-made and re-worked my DIY bathtub bombs 3 occasions! Let’s simply say, I realized quite a lot of what do to do and what to not do! I employed my daughters helps since they’re residence for the summer time as effectively so between the three of us, we obtained bathtub bombs discovered and have all the information and tips so you may make the proper bathtub bomb with out the trial and error!

The Science Behind Bathtub Bombs:

The two elements you should have in an effort to make your individual bathtub bombs are citric acid and baking soda. A chemical response happens between these 2 elements and you should have them each. All different elements aren’t 100% essential.

According to Live Science

The fizziness of bathtub bombs comes from the chemical reactions that occur when the baking soda and citric acid come into contact with water, Wooden-Black instructed Stay Science. Baking soda, or sodium bicarbonate, has the chemical formulation NaHCO3. In water, baking soda shortly dissolves, and the positively charged sodium (Na+) breaks aside from negatively charged bicarbonate (HCO3-). [Goopy Science: How to Make Slime with Glue]

In the meantime, the citric acid additionally dissolves, with a single hydrogen ion (H+) separating from the remainder of the molecule, Wooden-Black mentioned. Then, that positively charged hydrogen from the citric acid and the negatively charged bicarbonate from the baking soda mingle, in a short time present process a sequence of reactions. One of many finish merchandise is carbon dioxide (CO2). As a result of carbon dioxide is a fuel, it kinds small bubbles within the bathtub water, creating a pleasant fizz.

To make bathtub bombs, you should use 1 half citric acid to 2 elements baking soda. For instance, when you use 1 cup of baking soda, you’ll want 1/2 cup citric acid. 

Additionally, per 2 cup of dry elements add about 1-2 teaspoons of liquid. On this bathtub bomb recipe, you should add the liquid slowly checking to get the suitable consistency. You need to barely moisten the combination in order that the powder sticks collectively. Nonetheless, don’t fret when you get an excessive amount of liquid-just add extra baking soda! 

Different DIY Bathtub Bomb Components:

Epsom Salt is a pure ingredient so as to add to your bathtub for mineral absorption and detox. 

Cornstarch in a shower bomb merely slows down the response between the baking soda and citric acid. By binding to the baking soda in addition to the citric acid, the cornstarch slows down the speed at which each of them dissolve. The cornstarch prolongs the bathtub bomb motion. The fizziness may find yourself lasting 2-4 minutes fairly than a couple of seconds!

Bath bombs on white background

I made 3 totally different batches with totally different important oil mixtures, totally different colours and totally different dried herbs. I added lavender buds to the purple bombs and chamomile flowers and rose petals to the yellow bombs. You may sprinkle herbs on the underside of your mildew so they’re seen on the completed bomb or you’ll be able to combine them into your combination so they’re a shock as soon as they hit a heat bathtub!

Simply bear in mind no matter you set in your bathtub bomb has to go down the drain!

Get artistic and add your individual private contact! This straightforward bathtub bomb recipe would make a terrific present!!

You could be inquisitive about my DIY Firming Physique Oil recipe. It’s the proper physique moisturizer for after the bathtub!

DIY Bath Bomb Ingredients

What You’ll Have to Make DIY Bathtub Bombs


  • 1 cup Baking Soda
  • 1/2 cup Citric Acid
  • 1/2 cup Epsom Salt
  • 1/2 cup Cornstarch
  • 1-1 1/2 teaspoon coconut oil
  • 1-1 1/2 teaspoons water
  • 10 drops important oil of your alternative *non-compulsory
  • 2-4 drops meals coloring *non-compulsory
  • Dried herbs or petals *non-compulsory


  • Metallic Bathtub Bomb Molds
  • Massive Bowl
  • Small Bowl, cup or jar
  • Whisk


    1. Add baking soda, citric acid, Epsom salt and cornstarch in a big bowl.
    2. Combine dry elements effectively.
    3. Soften coconut oil in a double boiler (fill a medium sized pot half method full with water and gently warmth your coconut oil on medium warmth)
    4. In a separate small bowl or jar, add moist elements together with meals coloring and important oil.
    5. Combine your liquid elements effectively till the colour and important oils are evenly dispersed.
    6. SLOWLY add the liquid combination into the dry combination stirring the complete time. We do not need the citric acid to get activated by the liquid.
    7. Test that your closing combination clumps collectively. Assume-wet sand. However do not get too moist! We simply need to have the ability to clump the combination collectively when compacted.
    8. Utilizing stainless-steel molds, pack within the combination into every mildew half.
    9. Sprinkle further bathtub bomb combination loosely on high of the molds and press combination within the molds collectively.
    10. Twist and take away molds. Faucet the mildew to loosen the bathtub bomb for simpler elimination.
    11. Place bombs on parchment paper and permit to dry for 24-48 hours.

    Bowl of dry ingredients

    Dripping food coloring in small jar of liquid

    Pouring liquid into white powder mixture

    Hand clumping white powder

    Hands putting mixture into a mold


  • You will need to be aware that bathtub bomb making shouldn’t be carried out in a damp setting. This challenge just isn’t the proper wet day exercise.
  • The shelf lifetime of bathtub bombs is 6 months. Citric acid will begin to lose it is fizzy energy after too lengthy.

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Mould Choices:

3 yellow diy bath bombs made from muffin tins

Coloration Concepts:

*At all times add mica powder into your liquid since inhaling mica will be hazardous.

Scent Choices:

Jar of Bath Bombs by Bath Tub

Troubleshooting DIY Bathtub Bombs:

  • In case your bombs are too moist you’ll be able to add extra baking soda. 
  • In case your bomb is crumbling and never staying collectively, add extra moist elements. Do that fastidiously. You may fill a sprig bottle with water, witch hazel or alcohol and spray your combination to make sure you don’t add an excessive amount of water.
  • If the bomb fluffs up you’ve added an excessive amount of liquid or added liquid too quick.
  • If the bomb is delicate, it wasn’t packed down sufficient or it was too moist.
  • If the bomb has bumps the moist and dry elements weren’t blended effectively sufficient.
  • If the bomb cracks down the center, it was not molded correctly. I heard that when you shrink wrap it and wait 24 hours, it is going to come again collectively.
  • If the bomb sticks to the mildew the combo was too moist.
  • If the bomb doesn’t float, it’s most certainly not dry sufficient. Bombs can typically take a number of weeks earlier than they’ll float.

More often than not you’ll be able to crumble up the bomb right into a bowl and tweak the combination. Not all is often misplaced when you make a mistake with bathtub bombs! Don’t throw it out simply but!


As an alternative of coconut oil, be at liberty to make use of olive oil, almond oil, avocado oil, castor oil and so on.

I wish to omit cornstarch in my subsequent batch and am pondering of utilizing coconut milk powder as an alternative. From all that I’ve researched I’m positive it is going to work nonetheless, I haven’t tried it but.

So long as you retain the proportions of liquid to powder and don’t omit baking soda or citric acid, you’ll be able to mess around with elements in an effort to obtain totally different advantages and reactions out of your bombs.

A Few Bathtub Bomb Methods!

  • Strive utilizing castile cleaning soap as your liquid for plenty of foamy bubbles!
  • For extra nourishment, use all oil to your liquid proportion.
  • Take about 1/4 cup of a tough butter like cocoa or kokum (dry, not melted). Cowl the butter with baking soda and finely chop the butter ensuring it’s coated in powder. Add it to your dry combination. Butter will soften in a sizzling bathtub and provides further nourishment for dry pores and skin!
  • You may separate a batch into a number of smaller batches, add totally different shade to every batch and layer the totally different colours to make a stunning bathtub bomb!
  • Utilizing a tablespoon to indent insides of each halves of the mildew then fill the indention with one other coloured batch of bathtub bomb combine in order that once you use it, a shock shade is inside. 

Whereas I had a tough go of creating bathtub bombs due to the flimsy plastic molds, I’m planning to purchase the right metallic molds and experiment extra. I discovered a Youtube channel referred to as Creative Bath Lab and he or she is the queen of all issues bath-especially bathtub bombs. She makes essentially the most artistic excellent bathtub bomb each time!

Like I mentioned, what I believed was going to be a straightforward selfmade bathtub bombs challenge turned out to be difficult and cumbersome so I took to the web looking for solutions. This posts compiles all that I’ve realized. General, my daughters and I loved this DIY and may’t wait to make extra!

Take to the feedback you probably have your suggestions or questions!!

xx, Jenni

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