DIY Bathtub Bombs Suggestions & Methods!

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

Large jar with bath bombs

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Ever had a type of DIY makes an attempt the place every little thing went flawed and what was purported to be simple become a 2 day lengthy ordeal? That is the way it went with studying to make my very own tub 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 tub bombs 3 occasions! Let’s simply say, I discovered lots of what do to do and what to not do! I employed my daughters helps since they’re dwelling for the summer time as properly so between the three of us, we received tub bombs found out and have all the information and tips so you may make the right tub bomb with out the trial and error!

The Science Behind Bathtub Bombs:

The two elements it’s essential to have in an effort to make your individual tub bombs are citric acid and baking soda. A chemical response happens between these 2 elements and it’s essential to have them each. All different elements are usually not 100% essential.

According to Live Science

The fizziness of tub bombs comes from the chemical reactions that occur when the baking soda and citric acid come into contact with water, Wooden-Black advised Reside 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 gasoline, it varieties small bubbles within the tub water, creating a pleasant fizz.

To make tub bombs, it’s essential to use 1 half citric acid to 2 components baking soda. For instance, if you happen to 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 tub bomb recipe, it’s essential to add the liquid slowly checking to get the suitable consistency. You need to barely moisten the combination in order that the powder sticks collectively. Nevertheless, don’t fret if you happen to get an excessive amount of liquid-just add extra baking soda! 

Different DIY Bathtub Bomb Elements:

Epsom Salt is a pure ingredient so as to add to your tub 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 tub bomb motion. The fizziness may find yourself lasting 2-4 minutes relatively than a couple of seconds!

Bath bombs on white background

I made 3 completely different batches with completely different important oil mixtures, completely different colours and completely different dried herbs. I added lavender buds to the purple bombs and chamomile flowers and rose petals to the yellow bombs. You’ll be able to sprinkle herbs on the underside of your mould 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 tub!

Simply keep in mind no matter you place in your tub bomb has to go down the drain!

Get inventive and add your individual private contact! This straightforward tub bomb recipe would make an incredible reward!!

You is likely to be excited about my DIY Firming Physique Oil recipe. It’s the right physique moisturizer for after the tub!

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 *optionally available
  • 2-4 drops meals coloring *optionally available
  • Dried herbs or petals *optionally available


  • Steel Bathtub Bomb Molds
  • Giant 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 properly.
    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 properly till the colour and important oils are evenly dispersed.
    6. SLOWLY add the liquid combination into the dry combination stirring all the time. We do not need the citric acid to get activated by the liquid.
    7. Verify that your remaining combination clumps collectively. Suppose-wet sand. However do not get too moist! We simply need to have the ability to clump the combination collectively when compacted.
    8. Utilizing chrome steel molds, pack within the combination into every mould half.
    9. Sprinkle further tub bomb combination loosely on high of the molds and press combination within the molds collectively.
    10. Twist and take away molds. Faucet the mould to loosen the tub bomb for simpler removing.
    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 word that tub bomb making shouldn’t be accomplished in a moist surroundings. This undertaking isn’t the right wet day exercise.
  • The shelf lifetime of tub 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

Shade Concepts:

*At all times add mica powder into your liquid since inhaling mica may 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’ll be able to 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 smooth, it wasn’t packed down sufficient or it was too moist.
  • If the bomb has bumps the moist and dry elements weren’t blended properly sufficient.
  • If the bomb cracks down the center, it was not molded correctly. I heard that if you happen to shrink wrap it and wait 24 hours, it can come again collectively.
  • If the bomb sticks to the mould the combination was too moist.
  • If the bomb doesn’t float, it’s most definitely 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 usually misplaced if you happen to make a mistake with tub bombs! Don’t throw it out simply but!


As a substitute of coconut oil, be at liberty to make use of olive oil, almond oil, avocado oil, castor oil and so forth.

I want 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 can 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 completely different advantages and reactions out of your bombs.

A Few Bathtub Bomb Methods!

  • Attempt utilizing castile cleaning soap as your liquid for plenty of foamy bubbles!
  • For extra nourishment, use all oil in 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 scorching tub and provides further nourishment for dry pores and skin!
  • You’ll be able to separate a batch into a number of smaller batches, add completely different shade to every batch and layer the completely different colours to make a beautiful tub bomb!
  • Utilizing a tablespoon to indent insides of each halves of the mould then fill the indention with one other coloured batch of tub bomb combine in order that whenever you use it, a shock shade is inside. 

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

Like I mentioned, what I believed was going to be a simple selfmade tub bombs undertaking turned out to be tough and cumbersome so I took to the web in the hunt for solutions. This posts compiles all that I’ve discovered. General, my daughters and I loved this DIY and may’t wait to make extra!

Take to the feedback in case you have your suggestions or questions!!

xx, Jenni

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