These bath bombs make fantastic gifts - they are just dropped into a hot bath & they fizz & dissolve releasing a beautiful fragrance! Surprisingly easy to make, let your imagination run WILD & experiment with different oils & colours - I also like to add dried rose petals, dried lavender & fine glitter......the possibilities are endless! I use heart shaped moulds, friand cake tins & round Christmas baubles for moulds. Let me know your ideas! I buy the citric acid in a large bag from an Asian supermarket.