A bath bomb is similar to a soap, but with the addition of a lot of air bubbles, giving you the experience of a bubble bath.
assitant
Not really.  It releases bubbles in water, but that is mostly just for fun.  It’s mostly for decorating the water in a whimsical way.  Some people also use it as a hair treatment.
assistant
What is a bath bomb?
user
A bath bomb is a shampoo-like substance that foams and releases bubbles in water.
assistant
It is meant to clean you like soap?
user