Hi Angel Gilding, I hope all is well with you! Do the materials for pouring silver expire? I got a kit back in 2020 and would like to use the materials again but I wanted to double check they will still be good before getting all set up. Please advise, thank you! My best, -Marli

Hello! Thanks for your purchase! The Pouring Silver Chemicals have a shelf life of one year when stored in a cool, dark place. The Tin for Silver has a shelf life of us to six months when stored in a fridge or a freezer. Therefore, your chemicals may be expired. We recommend purchasing fresh Tin and testing out the Silvering Chemicals to see how they work for you. We are happy to help troubleshoot. Thanks!