Bath bombs have quickly become a huge craze in skin care. Convenient, affordable, and let’s face it- just plain fun, these little orbs have taken the world by storm. They come in so many different colors with all kinds of different ingredients and scents, it’s hard to choose between them all!! But what is the chemistry that is at work when you put one of these little beauties into your tub? The chemistry lies in an acid-base reaction.
Bath bombs incorporate a weak acid – citric acid with a pH of 3.2 – and a weak base – baking soda with a pH of 8 to 9. Once they are dropped into the water, they react to release carbon dioxide (CO2) gas, which gives that wonderful fizzing that they are known for.
Since this reaction requires water, it is important to keep them away from moisture before using them. Storing them in an air-tight container in a cabinet may help protect them from the humidity and steam of a bathroom. And using liquid ingredients like witch hazel and essential oils sparingly will help keep the bath bomb in tact.
NOTE: Hi Friends!!! Sorry for the long period of silence, I was taking some time off during the holidays to be with family and to relax a little before kicking things into high gear for the New Year! I am looking forward to some new changes to The Chemical Makeup this year! I decided to start those fun changes by creating infographics once in a while like the one above. It’s my very first one, so excuse some of the poor choices I may have made 😉 but if you’d like of these, please feel free to comment below with other info you’d like to see in this form 🙂 I also plan to start branching out to other topics in chemistry including another one of my loves: FOOD! 😀 So look for posts about food chemistry coming to The Chemical Makeup soon. Thanks for making my first month with the Chemical Makeup an awesome one and I hope to hear more from all of you in the new year!!
Until next time, keep a scientific eye on the world and a happy thought in your head!!