Just recently got back into playing -- but, does anybody know if these potions are temporary? Like once I open one, does that costume now stay in my inventory for me to use whenever I wish? Or would I have to purchase another potion if I wanted the effect again... anybody know? Thanks!

Potions are temporary only last for a short time after cosumotion

here is the thread about them: viewtopic.php?f=2&t=132810

i guess they only last 1 hour but also they will disappear once you edit your outfit or refresh the game or get disonnected
i also kind of remember that if the costume wore off while i was offline, i'd come back to the game wearing underwear, i'm not totally certain about that one.

i have many of them so if there are any you'd like, please let me know