Oh, not at all! The effects are permanent~

[ That's how rewiring your soul works! But she gets a feeling people who aren't magical girls might freak out at the idea, so she'll keep the details of how exactly she achieves this to herself, at least for the time being. ]

Of course, things still take time! It might take a couple of sessions before the results are truly impressive. Kind of like you can't expect to get all buff after only one visit to the gym, right?