Piping gel is a clear, transparent gel with so many uses! Tint it to create realistic water or blood, or leave it clear! Dilute it with clear alcohol to create a shiny glaze, or use it as glue to attach icing transfers/fondant molds/wafer paper elements. Add it to your royal icing to soften it and make string work easier!
Piping gel sets fairly solid when given enough time to dry.