I have many fabrics that have metallics and the ones that are batiks i do prewash in the sink to check for bleeding. they look just fine after doing that. I would recommend however that when you go to iron for the first time not to iron on the metallic side. I have read many instructions on metallics and this is always recommended. i think it has more to do with your iron than anything. I honestly wouldn't worry about the metallic. just treat it like any other fabric. can we see the perty fabric? we might want to get some hehe.