Using this Barbie DIY bath fizzers kit is super easy. First, take the powders included in the kit and pour them into the provided cup. Mix them well together. Once they're thoroughly combined, start shaping the mixture into a bath bomb. You can give it any shape you like. Then, let the bath bomb sit for a while until it sets. When it's ready, simply drop it into your warm bathwater and enjoy the fizzy, relaxing experience. Keep the kit in a cool, dry place to ensure the powders stay fresh. This kit is meant for kids aged 6 and up, so adult supervision might be needed for younger children. Don't eat the powders as they are for bath use only.