Kids can learn as well as play with this kit that combines STEAM learning with the fun of a spa day! Packaged in a fold-out pack, this kit comes with everything you'll need to make your very own bath bombs, including 6 bath bomb moulds, baking soda, citric acid, and essential oil to make your bath bombs smell amazing.Also included is a 16-page instruction book with added activities to keep you entertained while your bath bombs set.