How to Make Bath Bomb Fizz Last Longer?

Bath bombs make for a relaxing bathing experience, throw them into your bathtub and watch as they fizzle out while adding color to your bathwater. The experience is so relaxing, the air is sweet-smelling, and you wish the day never ends. 

You can either purchase the already made spheres or make them in your home. A lot of people wonder what’s in those spheres and how to make bath bomb fizz last longer. 

With the right ingredients and techniques, you can make your special bath bomb that fizzles for a while each time you use them. Without wasting more time, let’s get right into the details. 

Our Special Bath Bomb Recipe 

There are different ways to make bath bombs, but if you want them to fizzle for longer, you will have to take care to ensure that the chemistry is right. 

You don’t need to be a chemist to get it right, but you have to be willing to try a few times before you can get it right. I don’t mean that you won’t get it right the first time, just in case, you can give it a few try to get a handle on things. 

How to Make Bath Bombs Fizz last Longer

All the ingredients for making bath bombs are readily available for purchase at your local cosmetic ingredient store. You can also search online for the ingredients and have them delivered to your doorstep if that works for you. 


  • 8 oz. of baking soda 
  • 4 oz. corn starch 
  • 4 oz. Epsom salt 
  • 4 oz. citric acid 
  • 2 tablespoons of coconut oil 
  • 2 tablespoons of essential oil 
  • a tablespoon of water 
  • a few drops of liquid coloring (food coloring)


The tools outlined below are important to the manufacturing process and get the job done quickly and with ease. 

  • Large bowl – It serves as a medium for mixing all your ingredients.
  • Whisk – You don’t want to use your hands to mix the ingredients, and a whisk mixes the ingredients properly.
  • Silicone Molds – You need the silicone molds to hold the wet ingredients and then forged it into the sphere-shaped bomb.


Once you have all the ingredients and tools you need to get the job done, you can now begin the manufacturing process. 

  • The first thing to do is to mix the dry ingredients in the large bowl. The ingredients include the Epsom salt, baking soda, citric acid, and corn starch. You should make use of the whisk to avoid clumps in the mixture. The trick here is to get the baking soda, which is a high pH powder, to react with a low pH acid; in this case, the citric acid. The other two ingredients are there to strike a balance between the two compounds. 
  • Once you are satisfied with the dry mix and checked that it is free from clumps, you can now slowly add the wet ingredients. The best way to do this is to mix the wet ingredients separately in a jar and then slowly add it into the large bowl with the dry ingredients. You can experiment with the wet ingredients, add a mix of essential oils just how you like it. I find eucalyptus and lavender oil to be soothing and refreshing, you can use cinnamon or peppermint oil for a more therapeutic feel. It doesn’t matter which oil you use, so long as you get your desired scent. 

  • When you are certain about the scent and quantity you desire, you can now go-ahead to fill the silicone molds with the mixtures. The mixtures get dried quickly, so you want to use up everything in the bowl. Any leftovers will solidify quickly, and you won’t be able to get them into the mold once they are dried. You can avoid this by getting enough mold that will contain the number of ingredients you have. 
  • You will need to leave them in the mold to dry for a day or two. After this, you can now pop them out and keep them in a safe place until you need to use them. 


As we mentioned earlier, you can experiment with your bath bomb recipe, some people like glitter in theirs, so you can add that to yours if it is what you want. 

Also, when adding the liquid to the dry mix, you want to take things slow and ensure that you whisk the mixture thoroughly. You should stop when you notice they are perfectly clumped together. 

Some people don’t see the importance of cornstarch in the mix and don’t use them. The truth is that you don’t want to avoid using cornstarch in your bath bomb home recipe. The cornstarch helps to slow the reaction by binding to the citric acid and baking soda. It is what makes the bath bomb to stay longer, so if you want it to stay for a few minutes rather than seconds, you should add cornstarch to the mix. 

Safety Precautions with Using Bath Bombs 

There are concerns about the safety of using bath bombs, mainly because of the ingredients used in making it. You can avoid all the negative side effects of using a bath bomb by following simple safety precautions such as:

  • Only use natural ingredients in your bath bombs. You can do this by ensuring you get them from trusted sources. 
  • You should also avoid using them on sensitive skin; if you occasionally suffer from skin irritation at the slightest, you should desist from using bath bombs. 
  • You should also be careful when using bath bombs in the tub, they are slippery and can cause serious damage if care is not taken. 
  • If you purchase already made bath bombs, you want to ensure that you ask about the ingredients, just to be sure that it doesn’t contain anything that you are allergic to. 

How to Make Bath Bombs Fizz last Longer


Bath bombs make bath time more relaxing and fun, both kids and adults can attest to the fact that it is a cheap way to work out a good wash. If you are wondering how to get your bath bomb to stay longer, you should consider adding more cornstarch to improve the fizzling time. 

Have you tried using bath bombs before? How was your experience? We will like to hear from you in the comment section.