Hope you enjoy this Dragon Egg Bath Bomb DIY with HIDDEN SPONGE DRAGON Inside! ALSO we look at the science of Bath Bombs and ask "Why is it that Bath Bombs Fizz?". Ingredients below! For One Dragon Egg I used... 1/2 cup of citric acid 1 cup of bicarbonate of Soda 10 drops of cosmetic colouring 1 tsp of cosmetic grade glitter 10 drops of essential oil 1 spray of water 1 dinosaur bath bean!