This item may be used for molding hot and cold processed soaps as well as melt and pour soap bases. This 2-piece mold easily snaps together to make a tube with an open end.It is easy to snap together and soap liquid will not leak. Cut the tube They are heavy-duty soap molds that can be used over and over again; they are tough and made to last.soap into small adorable heart ones that are ideal for embedding into larger soaps and add more than a touch of romance to any soap design!<br> About Silicone:Heat-resistant temperature of -40 Degrees Celsius to +230 Degrees Celsius, can be re-used, innovative design, soft, varied styles, stripping easy, and easy to clean. <br> Advantages:Silicone is extremely stable properties, UV, ozone, extreme temperatures, and the vast majority of chemical agents can not change its character. it can be applied to microwave heating, oven baked, non-direct contact with flame cooking, cold storage and freezing.