Much of the appeal of handcrafted soap comes from the fact that, as the name suggests, it's handmade by a business that customers will come to know and trust. However, if you also want to sell supplies like soap molds, you can dropship these very easily. AliExpress has a wide selection of soap molds for sale as well as other products, and Shift4Shop can also integrate with any supplier as a dropshipper. Just be sure your customers don't mind the occasional lengthy shipping time (if the dropshipped products come from overseas), and invest in test orders to ensure the products are high quality and packaged well.