It couldn't be easier to use this FLAT EGG shaped gorgeous 3 piece shampoo bar / bath bomb mould! They are designed to be used by hand so no need to buy an expensive bath bomb press. Simply put the tube on top of the base, fill with your favourite recipe and then put the plunger on top. Press down firmly and voila! A perfectly formed shampoo bar!  For shampoo bars, we do recommend using a bit of cling film/shrink wrap on the inside of the base and the inside of the plunger to make it easier to get them out as the mixture can sometimes stick to the inside. For the bath bombs/shower steamers you don't need to do this as the mixture is very different.