Sign up for our free newsletters. Dropping a huge effervescent tablet into the tub smells so good and is fun to watch. Making a bath bomb isn't hard but it can take a some care and patience.
Citric acid is the ingredient that causes the fizzing.
You have to have the correct grind of citric acid to make a successful bomd. Add this back to the large bowl and mix well. Remove enough mixture to the small bowl for one bomb and mist lightly with a spritz bottle, just enough to hold salts together. Press the moisten mixture into a mold,pack down hard. Continue on in the same way.