Every once in a while people ask how best to store polymer clay(this is Premo sculpey specifically) and I always recommend cloudy plastic! For some reason Premo and shiny clear plastic are mortal enemies and refuse to play nice together. If left too long, the two practically fuse together, because they get so sticky!! Make sure you always work on either tile, glass, cloudy plastic, or some card stock. If you are unsure of your work surface, do this 10 minute test to see any reaction! I’ve had to