This 1 piece bath bomb mold is 3D Printed using PLA, and is easy to use. The inside is embossed to make the bath bomb details stand out. Simply fill with bath bomb powder press in and top up with the mix, compress and level before unmolding your bath bomb. Please do not leave your mold in extreme heat areas. This product is not dishwasher safe and should be handwashed by rinsing out (do NOT use HOT water). Do not submerge for long periods of time as this could affect your product. Dry excess water off immediately and leave to air dry before storing. Mold colors will vary based on availability of filament. This listing is for a bath bomb mold only.